WO2004094990A2 - Volumetric control apparatus for fluid dispensing - Google Patents

Volumetric control apparatus for fluid dispensing Download PDF

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Publication number
WO2004094990A2
WO2004094990A2 PCT/US2004/012361 US2004012361W WO2004094990A2 WO 2004094990 A2 WO2004094990 A2 WO 2004094990A2 US 2004012361 W US2004012361 W US 2004012361W WO 2004094990 A2 WO2004094990 A2 WO 2004094990A2
Authority
WO
WIPO (PCT)
Prior art keywords
switch
conduit
valve
control unit
flow meter
Prior art date
Application number
PCT/US2004/012361
Other languages
French (fr)
Other versions
WO2004094990A3 (en
Inventor
Timothy C. Beachy
Original Assignee
University Of South Florida
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by University Of South Florida filed Critical University Of South Florida
Publication of WO2004094990A2 publication Critical patent/WO2004094990A2/en
Publication of WO2004094990A3 publication Critical patent/WO2004094990A3/en
Priority to US11/163,534 priority Critical patent/US7306115B2/en
Priority to US11/936,361 priority patent/US8127967B1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F13/00—Apparatus for measuring by volume and delivering fluids or fluent solid materials, not provided for in the preceding groups
    • G01F13/008—Apparatus for measuring by volume and delivering fluids or fluent solid materials, not provided for in the preceding groups taps comprising counting- and recording means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/10—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission
    • G01F1/103—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission with radiation as transfer means to the indicating device, e.g. light transmission
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/001—Means for regulating or setting the meter for a predetermined quantity
    • G01F15/003—Means for regulating or setting the meter for a predetermined quantity using electromagnetic, electric or electronic means
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/06—Control of flow characterised by the use of electric means
    • G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
    • G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
    • G05D7/0635—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on throttling means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7761—Electrically actuated valve

Definitions

  • measuring implements such as measuring cups and spoons.
  • These measuring implements known in the art are fabricated to measure and deliver a preset volume of liquid as determined by each individual measuring implement. It is desirable to eliminate the need for measuring implements, and to instead provide a preset quantity of liquid directly from the source of the liquid. As an example, it is desirable to have the ability to supply a volume of water equal to a specific measurement directly from a kitchen faucet. Accordingly, it would be possible to supply a quantity equal to one cup, or 8 ounces, directly from the kitchen water faucet, eliminating the need for a one cup measuring device.
  • Systems are known in the art for supplying preset quantities of liquids and for metering fluid flow from a source.
  • the systems known in the art do not describe an apparatus effective in supplying a preset quantity of liquid, as specified by a user, from a source of fluid under pressure.
  • prior art systems are known for metering the flow of fluid from a source, these systems do not allow the user to select a specific volume to be dispensed.
  • the flow meter systems known in the art present the flow measurement to the user, but the systems do not control the initiation and termination of the fluid flow to dispense the specific volume selected by the user.
  • the present invention provides an apparatus for dispensing fluids in preselected quantities.
  • an apparatus for dispensing fluid in preselected volumetric quantities.
  • the apparatus comprises a valve, such as a solenoid valve, positioned inline with a conduit holding fluid under pressure, a flow meter positioned inline with the conduit, a control unit communicatively coupled to the valve and flow meter, the control unit adapted to open and close the valve and detect data from the flow meter associated with the volume of fluid passing through the conduit, a units select switch having a plurality of preselected settings associated with a plurality of volumetric units, the units select switch communicatively coupled to the control unit, and an incrementing switch communicatively coupled to the control unit, whereby the control unit opens the valve responsive to activation of the incrementing switch thereby permitting fluid flow through the conduit until control unit closes the valve responsive to flow meter indicating a volume of fluid passed through the conduit substantially equal to a volumetric unit selected on the units select switch.
  • a valve such as a sole
  • the conduit holding fluid under pressure further includes a faucet. It is within the scope of the present invention for the faucet to be integral with a kitchen or bathroom sink in addition to a faucet being integral to an outdoor source of water, such as a spigot. As such, the conduit may further include a manual faucet valve for initiating and terminating the flow of water as is commonly known in the art.
  • the fluid exists within the conduit of the apparatus under pressure.
  • the operating pressure of the system maintains accuracy over a wide pressure range, thereby providing accuracy stability under pressure variations, inclusive of any typical water delivery pressures.
  • the pressure of the fluid under pressure is between about 25 psi and about 60 psi. This range of pressure is typical of a domestic water source.
  • the present invention further includes a pressure regulator positioned inline with the conduit. If the fluid pressure is not within the preferred range, the pressure regulator serves to regulate the fluid under pressure reaching the flow meter to between about 25 psi and about 60 psi.
  • the flow meter further of the apparatus includes an infrared light emitting diode, an infrared phototransistor communicatively coupled to receive the light from the light emitting diode and to output a current to the control module and an impeller positioned inline with the conduit.
  • the pressurized flow of fluid in the conduit causes the impeller to rotate.
  • the rotation of the impeller intermittently obstructing the light transmitted from the light emitting diode to the infrared phototransistor thereby varying the output current of the phototransistor to the control module.
  • the output current of the phototransistor is interpreted by the control module to measure the volume of dispensed fluid.
  • control unit of the present invention includes, a unit count circuit communicatively coupled to receive the output from the units select switch, an incremental unit count circuit communicatively coupled to receive the output from the incrementing switch, a non-zero detection circuit communicatively coupled to the valve and a count detection circuit communicatively coupled to receive the output from the flow meter, the unit count circuit and the incremental unit count circuit, the count detection circuit to compare the output of the flow meter to the output of the unit count circuit and the incremental unit count circuit and to provide output to the non-zero detection circuit for control of the valve.
  • control unit further includes a debouncing circuit positioned between the incrementing switch output and the incremental unit count circuit to suppress a switch contact bounce.
  • the incrementing switch is a momentary push switch and the actuation of the push switch permits the fluid flow equal to the volumetric unit selected by the unit select switch. Additionally, the incrementing switch can be actuated a plurality of times such that each actuation communicates to the control unit to supply a volume of fluid equal to the volumetric unit selected by the unit select switch. In an exemplary embodiment, the unit select switch may be positioned to indicate a one-cup volume and thereby actuating the incrementing switch two times would be effective in dispensing two cups of fluid from the conduit.
  • the units select switch is a rotary switch and the selection of the volumetric unit to be dispensed is determined by the position of the switch along the rotary sweep.
  • the volumetric control apparatus further includes a user definable volumetric unit that can be determined by the user and selected by the units select switch.
  • the user has the ability to define a volumetric unit specific to their needs.
  • This custom setting will allow the user to define a unit of measure in addition to the preselected settings associated with the plurality of volumetric units.
  • the user can define a single unit of measure to provide for the dispensing of 28 fluid ounces of water such that the dispensing of 28 fluid ounces would require only one activation of the incrementing switch. With this custom setting selected, 56 fluid ounces would be dispensed by the activation of the incrementing switch twice.
  • volumetric control apparatus of the present invention with a domestic water delivery system.
  • the domestic water delivery system is known to supply appropriate pressure for operation of the system.
  • the volumetric control apparatus is adaptable for use with a variety of faucet configurations.
  • the present invention provides a volumetric control apparatus for fluid dispensing that provides benefits over other systems known in the art.
  • the present invention eliminates the need for peripheral measuring devices by allowing the user to select and dispense a controlled volume of fluid.
  • the present invention allows the user to select a specific volume and the apparatus controls the fluid initiation and termination to dispense the user selected volume as specified.
  • FIG. 1 is a diagrammatic view of an embodiment of the invention.
  • FIG. 2 is an elevated, isometric view of the control switch assembly according to an embodiment of the invention.
  • FIG. 3 is an elevated, isometric view of the control switch assembly according to an embodiment of the invention.
  • FIG. 4 is an isometric view of the present invention.
  • the volumetric control apparatus for fluid dispensing 10 in accordance with the present invention includes a user control switch assembly 15, a control module 20, a water flow meter 25, and a solenoid water valve 30. Operation of the volumetric control apparatus of the present invention utilizes a 120 volt 50/60 Hz AC or DC battery supply and a water source under pressure. Water flow pressure resulting from a typical domestic water supply system is within the operating range required of the present invention. The operating range is about of 25 to 60 psi without a pressure regulator. However, an embodiment of the invention may include a pressure regulator 35 for pressures greater than 60 psi.
  • the present invention can be utilized with a domestic water supply having a conventional faucet 36 and manual faucet valve control 38. Additionally, it is within the scope of the present invention to incorporate the volumetric control apparatus for use with an outdoor water supply, such as a conventional spigot and hose configuration. It is within the scope of the present invention to include an upstream in-line filter- screen with the outdoor water source embodiment to prevent objects from entering and obstructing the flow meter body.
  • the control switch assembly 15 includes a rotary switch 40 and a momentary push switch 45.
  • the position of the rotary switch 40 along the sweep of rotation selects the units of measure for dispensing.
  • Units of measure can be represented by a variety of identifiers, including, but not limited to, English units and metric units. Accordingly, the units of measure could be cups, liters, pint, or a variety of other volumetric measurements known in the art. It is also within the scope of the invention to provide a customizable unit of measure that can be defined by the user as necessary. An audible signal may be generated to confirm quantity selection.
  • the apparatus may optionally have a user-definable control to adjust the volumetric units into different quantities or metric-English unit conversions. The number of times that the momentary push switch 45 is actuated determines the number of the selected units to be dispensed.
  • a 4-bit counter in the control module 20 is incremented, once for each actuation.
  • a pause of one second or a cessation of actuating the momentary switch 45 allows the expiration of a timer in the control module 20.
  • this timer inhibits any control module operation other than the incrementing of the 4-bit counter.
  • the control module energizes the solenoid valve 30, establishing water flow.
  • flowing water from the water inlet spins the impeller 50 of the flow meter 25.
  • the flow meter consists of a body with an impeller 50 situated such that the vanes on the impeller partially obstruct a light path established by an infrared LED 55 and an infrared phototransistor 60.
  • the mass of the water is adequate to rotate the impeller as described by the present invention.
  • Rotary motion of the impeller 50 disturbs the light path of the LED 55, varying the conduction of the phototransistor.
  • the varying current is received by the control module 20 and translated into a voltage signal.
  • the signal from the infrared photo sensor is fed to an op-amp amplifier to produce pulses that represent the rotary motion of the impeller.
  • a pulse counter 65 incrementing the count each time a pulse is received.
  • the pulse count is sensed by a comparison circuit 75 that has count detection gates.
  • a stored 100 custom and preset unit value is selected by a units/program select switch 40 and fed to the comparison circuit 75 which outputs a pulse when the selected unit value 40,100 matches the flow meter pulse count 95.
  • This pulse decrements the units counter 80 and resets the flow meter pulse count 95 to zero.
  • Eventually the units counter 80 will count down to zero.
  • Logic gates 70 detect the zero count.
  • the detected zero-signal causes the controller to de-energize the solenoid valve 30, halting the flow of water.
  • the solenoid valve 30 of the present invention is adaptable to be used with a domestic water delivery system.
  • a debounce circuit 90 is provided.
  • the debounce circuit 90 is preferably deposed between the units-incrementing momentary switch 85 and the incremental units count circuit 80. The debounce circuit removes switch bounce. Removing the bounce in the switch contacts is necessary in certain applications, particularly where counting is required and the input is a mechanical switch.
  • the capacitive elements utilized in the debounce circuit effectively suppress the bouncing action electronically.
  • Fig. 3 illustrates a conventional faucet configuration have independent hot and cold water valves.
  • Fig. 3 illustrates a conventional faucet configuration incorporating a lever handle for controlling the hot and cold water mix.
  • the units select rotary switch 40 is shown, in addition to the volumetric indicators 85 along the length of the rotary sweep.
  • the incrementing momentary push switch 45 is also illustrated.

Abstract

The present invention provides an apparatus for dispensing fluid in preselected volumetric quantities. The apparatus comprises a valve positioned inline with a conduit holding fluid under pressure, a flow meter positioned inline with the conduit, a control unit communicatively coupled to the valve and flow meter, the control unit adapted to open and close the valve and detect data from the flow meter associated with the volume of fluid passing through the conduit, a units select switch having a plurality of preselected settings associated with a plurality of volumetric units, the units select switch communicatively coupled to the control unit, and an incrementing switch communicatively coupled to the control unit, whereby the control unit opens the valve responsive to activation of the incrementing switch thereby permitting fluid flow through the conduit until the control unit closes the valve responsive to the flow meter indicating a volume of fluid passed through the conduit substantially equal to a volumetric unit selected on the units select switch.

Description

Volumetric Control Apparatus for Fluid Dispensing
CROSS REFERENCE TO RELATED APPLICATIONS
This application claims priority to Provisional U.S. Patent Application No. 60/320,131 filed April 22, 2003.
BACKGROUND OF THE INVENTION
Conventional methods for measuring volumes of liquid require a collection of measuring implements, such as measuring cups and spoons. These measuring implements known in the art are fabricated to measure and deliver a preset volume of liquid as determined by each individual measuring implement. It is desirable to eliminate the need for measuring implements, and to instead provide a preset quantity of liquid directly from the source of the liquid. As an example, it is desirable to have the ability to supply a volume of water equal to a specific measurement directly from a kitchen faucet. Accordingly, it would be possible to supply a quantity equal to one cup, or 8 ounces, directly from the kitchen water faucet, eliminating the need for a one cup measuring device.
Systems are known in the art for supplying preset quantities of liquids and for metering fluid flow from a source. However, the systems known in the art do not describe an apparatus effective in supplying a preset quantity of liquid, as specified by a user, from a source of fluid under pressure. Additionally, while prior art systems are known for metering the flow of fluid from a source, these systems do not allow the user to select a specific volume to be dispensed. By contrast, the flow meter systems known in the art present the flow measurement to the user, but the systems do not control the initiation and termination of the fluid flow to dispense the specific volume selected by the user.
Accordingly, what is needed in the art is an apparatus for dispensing fluid in preselected quantities from a source of fluid under pressure, such as commonly exists in a domestic water supply.
SUMMARY OF THE INVENTION
The present invention provides an apparatus for dispensing fluids in preselected quantities. In accordance with an embodiment of the present invention, an apparatus is provided for dispensing fluid in preselected volumetric quantities. The apparatus comprises a valve, such as a solenoid valve, positioned inline with a conduit holding fluid under pressure, a flow meter positioned inline with the conduit, a control unit communicatively coupled to the valve and flow meter, the control unit adapted to open and close the valve and detect data from the flow meter associated with the volume of fluid passing through the conduit, a units select switch having a plurality of preselected settings associated with a plurality of volumetric units, the units select switch communicatively coupled to the control unit, and an incrementing switch communicatively coupled to the control unit, whereby the control unit opens the valve responsive to activation of the incrementing switch thereby permitting fluid flow through the conduit until control unit closes the valve responsive to flow meter indicating a volume of fluid passed through the conduit substantially equal to a volumetric unit selected on the units select switch.
In a particular embodiment, the conduit holding fluid under pressure further includes a faucet. It is within the scope of the present invention for the faucet to be integral with a kitchen or bathroom sink in addition to a faucet being integral to an outdoor source of water, such as a spigot. As such, the conduit may further include a manual faucet valve for initiating and terminating the flow of water as is commonly known in the art.
The fluid exists within the conduit of the apparatus under pressure. The operating pressure of the system maintains accuracy over a wide pressure range, thereby providing accuracy stability under pressure variations, inclusive of any typical water delivery pressures. In accordance a particular embodiment of the present invention, the pressure of the fluid under pressure is between about 25 psi and about 60 psi. This range of pressure is typical of a domestic water source. In an additional embodiment, the present invention further includes a pressure regulator positioned inline with the conduit. If the fluid pressure is not within the preferred range, the pressure regulator serves to regulate the fluid under pressure reaching the flow meter to between about 25 psi and about 60 psi.
In a particular embodiment, the flow meter further of the apparatus includes an infrared light emitting diode, an infrared phototransistor communicatively coupled to receive the light from the light emitting diode and to output a current to the control module and an impeller positioned inline with the conduit. The pressurized flow of fluid in the conduit causes the impeller to rotate. The rotation of the impeller intermittently obstructing the light transmitted from the light emitting diode to the infrared phototransistor thereby varying the output current of the phototransistor to the control module. The output current of the phototransistor is interpreted by the control module to measure the volume of dispensed fluid.
In an additional embodiment, the control unit of the present invention includes, a unit count circuit communicatively coupled to receive the output from the units select switch, an incremental unit count circuit communicatively coupled to receive the output from the incrementing switch, a non-zero detection circuit communicatively coupled to the valve and a count detection circuit communicatively coupled to receive the output from the flow meter, the unit count circuit and the incremental unit count circuit, the count detection circuit to compare the output of the flow meter to the output of the unit count circuit and the incremental unit count circuit and to provide output to the non-zero detection circuit for control of the valve.
In another embodiment, the control unit further includes a debouncing circuit positioned between the incrementing switch output and the incremental unit count circuit to suppress a switch contact bounce.
In another embodiment, the incrementing switch is a momentary push switch and the actuation of the push switch permits the fluid flow equal to the volumetric unit selected by the unit select switch. Additionally, the incrementing switch can be actuated a plurality of times such that each actuation communicates to the control unit to supply a volume of fluid equal to the volumetric unit selected by the unit select switch. In an exemplary embodiment, the unit select switch may be positioned to indicate a one-cup volume and thereby actuating the incrementing switch two times would be effective in dispensing two cups of fluid from the conduit.
In a particular embodiment, the units select switch is a rotary switch and the selection of the volumetric unit to be dispensed is determined by the position of the switch along the rotary sweep.
In accordance with an additional embodiment, the volumetric control apparatus further includes a user definable volumetric unit that can be determined by the user and selected by the units select switch. As such, the user has the ability to define a volumetric unit specific to their needs. This custom setting will allow the user to define a unit of measure in addition to the preselected settings associated with the plurality of volumetric units. As an example, the user can define a single unit of measure to provide for the dispensing of 28 fluid ounces of water such that the dispensing of 28 fluid ounces would require only one activation of the incrementing switch. With this custom setting selected, 56 fluid ounces would be dispensed by the activation of the incrementing switch twice.
It is within the scope of the present invention to utilize the volumetric control apparatus of the present invention with a domestic water delivery system. The domestic water delivery system is known to supply appropriate pressure for operation of the system. The volumetric control apparatus is adaptable for use with a variety of faucet configurations.
Accordingly, the present invention provides a volumetric control apparatus for fluid dispensing that provides benefits over other systems known in the art. The present invention eliminates the need for peripheral measuring devices by allowing the user to select and dispense a controlled volume of fluid. The present invention allows the user to select a specific volume and the apparatus controls the fluid initiation and termination to dispense the user selected volume as specified.
BRIEF DESCRIPTION OF THE DRAWINGS
For a fuller understanding of the nature and objects of the invention, reference should be made to the following detailed description, taken in connection with the accompanying drawings, in which:FIG. 1 is a diagrammatic view of an embodiment of the invention.
FIG. 2 is an elevated, isometric view of the control switch assembly according to an embodiment of the invention.
FIG. 3 is an elevated, isometric view of the control switch assembly according to an embodiment of the invention. FIG. 4 is an isometric view of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings, which form a part thereof, and within which are shown by way of illustration specific embodiments by which the invention may be practiced. It is to be understood that other embodiments may be utilized and structural changes may be made without departing from the scope of the invention.
With reference to Fig. 1 , in an overall view, the volumetric control apparatus for fluid dispensing 10 in accordance with the present invention includes a user control switch assembly 15, a control module 20, a water flow meter 25, and a solenoid water valve 30. Operation of the volumetric control apparatus of the present invention utilizes a 120 volt 50/60 Hz AC or DC battery supply and a water source under pressure. Water flow pressure resulting from a typical domestic water supply system is within the operating range required of the present invention. The operating range is about of 25 to 60 psi without a pressure regulator. However, an embodiment of the invention may include a pressure regulator 35 for pressures greater than 60 psi. As shown, the present invention can be utilized with a domestic water supply having a conventional faucet 36 and manual faucet valve control 38. Additionally, it is within the scope of the present invention to incorporate the volumetric control apparatus for use with an outdoor water supply, such as a conventional spigot and hose configuration. It is within the scope of the present invention to include an upstream in-line filter- screen with the outdoor water source embodiment to prevent objects from entering and obstructing the flow meter body.
In accordance with a preferred embodiment, the control switch assembly 15 includes a rotary switch 40 and a momentary push switch 45. The position of the rotary switch 40 along the sweep of rotation selects the units of measure for dispensing. Units of measure can be represented by a variety of identifiers, including, but not limited to, English units and metric units. Accordingly, the units of measure could be cups, liters, pint, or a variety of other volumetric measurements known in the art. It is also within the scope of the invention to provide a customizable unit of measure that can be defined by the user as necessary. An audible signal may be generated to confirm quantity selection. The apparatus may optionally have a user-definable control to adjust the volumetric units into different quantities or metric-English unit conversions. The number of times that the momentary push switch 45 is actuated determines the number of the selected units to be dispensed.
In an exemplary embodiment, as the momentary switch 45 is actuated, a 4-bit counter in the control module 20 is incremented, once for each actuation. A pause of one second or a cessation of actuating the momentary switch 45 allows the expiration of a timer in the control module 20. When active, this timer inhibits any control module operation other than the incrementing of the 4-bit counter. When the timer is expired and the 4-bit counter does not equal zero, the control module energizes the solenoid valve 30, establishing water flow.
With reference to Fig. 2, flowing water from the water inlet spins the impeller 50 of the flow meter 25. The flow meter consists of a body with an impeller 50 situated such that the vanes on the impeller partially obstruct a light path established by an infrared LED 55 and an infrared phototransistor 60. The mass of the water is adequate to rotate the impeller as described by the present invention. Rotary motion of the impeller 50 disturbs the light path of the LED 55, varying the conduction of the phototransistor. The varying current is received by the control module 20 and translated into a voltage signal. The signal from the infrared photo sensor is fed to an op-amp amplifier to produce pulses that represent the rotary motion of the impeller. These pulses are fed to a pulse counter 65, incrementing the count each time a pulse is received. The pulse count is sensed by a comparison circuit 75 that has count detection gates. A stored 100 custom and preset unit value is selected by a units/program select switch 40 and fed to the comparison circuit 75 which outputs a pulse when the selected unit value 40,100 matches the flow meter pulse count 95. This pulse decrements the units counter 80 and resets the flow meter pulse count 95 to zero. Eventually the units counter 80 will count down to zero. Logic gates 70 detect the zero count. The detected zero-signal causes the controller to de-energize the solenoid valve 30, halting the flow of water. The solenoid valve 30 of the present invention is adaptable to be used with a domestic water delivery system.
When a mechanical switch is operated, power is not available instantly. When a switch is closed the contacts bounce together many times before finally touching firmly. This phenomenon is called contact bounce. It is a small scale and very fast version of what happens when a ball is dropped on the floor. The bounce of the switch contacts 45 generates a series of pulses that may cause the counter circuitry 20 to incorrectly interpret the series of pulses generated. In accordance with the present invention, a debounce circuit 90 is provided. The debounce circuit 90 is preferably deposed between the units-incrementing momentary switch 85 and the incremental units count circuit 80. The debounce circuit removes switch bounce. Removing the bounce in the switch contacts is necessary in certain applications, particularly where counting is required and the input is a mechanical switch. The capacitive elements utilized in the debounce circuit effectively suppress the bouncing action electronically.
With reference to Fig. 3 and Fig. 4, the user control switch assembly 15 is shown relative to an installation with a conventional kitchen faucet. Fig. 3 illustrates a conventional faucet configuration have independent hot and cold water valves. Fig. 3 illustrates a conventional faucet configuration incorporating a lever handle for controlling the hot and cold water mix. The units select rotary switch 40 is shown, in addition to the volumetric indicators 85 along the length of the rotary sweep. The incrementing momentary push switch 45 is also illustrated.
It is within the scope of the invention to provide both cold, hot or mixed-temperature water. The device may also be adapted for use with a water softener or water filter device as required. It will be seen that the objects set forth above, and those made apparent from the foregoing description, are efficiently attained and since certain changes may be made in the above construction without departing from the scope of the invention, it is intended that all matters contained in the foregoing description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.
It is also to be understood that the following claims are intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween. Now that the invention has been described,

Claims

What is claimed is:
1. An apparatus for dispensing fluid in preselected volumetric quantities comprising:
a valve positioned inline with a conduit holding fluid under pressure;
a flow meter positioned inline with the conduit;
a control unit communicatively coupled to the valve and flow meter, the control unit adapted to open and close the valve and detect data from the flow meter associated with the volume of fluid passing through the conduit;
a units select switch having a plurality of preselected settings associated with a plurality of volumetric units, the units select switch communicatively coupled to the control unit; and
an incrementing switch communicatively coupled to the control unit, whereby the control unit opens the valve responsive to activation of the incrementing switch thereby permitting fluid flow through the conduit until the control unit closes the valve responsive to the data from the flow meter indicating a volume of fluid passed through the conduit substantially equal to a volumetric unit selected on the units select switch.
2. The apparatus of claim 1 , wherein the conduit holding fluid under pressure further comprises a faucet.
3. The apparatus of claim 2, wherein the conduit holding fluid under pressure further comprises a manual faucet valve.
4. The apparatus of claim 1 , wherein the valve is a solenoid valve.
5. The apparatus of claim 1 , wherein the pressure of the fluid under pressure is between about 25 psi and about 60 psi.
6. The apparatus of claim 1 , further comprising a pressure regulator positioned inline with the conduit, the pressure regulator to regulate the fluid under pressure reaching the flow meter to between about 25 psi and about 60 psi.
7. The apparatus of claim 1 , wherein the flow meter further comprises:
an infrared light emitting diode; an infrared phototransistor communicatively coupled to receive the light from the light emitting diode and to output a current to the control module;
an impeller positioned inline with the conduit, the rotation of the impeller intermittently obstructing the light transmitted from the light emitting diode to the infrared phototransistor thereby varying the output current of the phototransistor to the control module.
8. The apparatus of claim 1 , wherein the control unit further comprises:
a unit count circuit communicatively coupled to receive the output from the units select switch;
an incremental unit count circuit communicatively coupled to receive the output from the incrementing switch;
a non-zero detection circuit communicatively coupled to the valve;
a count detection circuit communicatively coupled to receive the output from the flow meter, the unit count circuit and the incremental unit count circuit, the count detection circuit to compare the output of the flow meter to the output of the unit count circuit and the incremental unit count circuit and to provide output to the non-zero detection circuit for control of the valve.
9. The apparatus of claim 8, further comprising a debouncing circuit positioned between the incrementing switch output and the incremental unit count circuit to suppress a switch contact bounce.
10. The apparatus of claim 1 , wherein the units select switch further comprises at least one user definable volumetric unit.
11. The apparatus of claim 1 , whereby the units select switch is a rotary switch and the plurality of volumetric units are selected by the rotation of the switch.
12. The apparatus of claim 1 , whereby the incrementing switch is a momentary push switch, the actuation of the push switch to permit the fluid flow equal to the volumetric unit selected by the unit select switch.
13. The apparatus of claim 12, wherein the incrementing switch is actuated a plurality of times, each actuation to permit a volume of fluid flow equal to the volumetric unit selected by the unit select switch.
14. An apparatus for dispensing fluid in preselected volumetric quantities from a domestic water delivery system, the apparatus comprising: a valve positioned inline with a conduit holding fluid under pressure;
a flow meter positioned inline with the conduit;
a control unit communicatively coupled to the valve and flow meter, the control unit adapted to open and close the valve and detect data from the flow meter associated with the volume of fluid passing through the conduit;
a rotary units select switch having a plurality of preselected settings associated with a plurality of volumetric units, the units select switch communicatively coupled to the control unit; and
an incrementing switch communicatively coupled to the control unit, whereby the control unit opens the valve responsive to activation of the incrementing switch thereby permitting fluid flow through the conduit until the control unit closes the valve responsive to the data from the flow meter indicating a volume of fluid passed through the conduit substantially equal to a volumetric unit selected on the units select switch.
PCT/US2004/012361 2003-04-22 2004-04-22 Volumetric control apparatus for fluid dispensing WO2004094990A2 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2416119A (en) * 2004-07-12 2006-01-18 Malachi Christopher Mckenna Water dispenser for a bath
US9394675B2 (en) 2010-04-20 2016-07-19 Delta Faucet Company Capacitive sensing system and method for operating a faucet
US9715238B2 (en) 2006-04-20 2017-07-25 Delta Faucet Company Electronic user interface for electronic mixing of water for residential faucets
US9856634B2 (en) 2006-04-20 2018-01-02 Delta Faucet Company Fluid delivery device with an in-water capacitive sensor
US9962718B2 (en) 2005-05-13 2018-05-08 Delta Faucet Company Power sprayer
US9988797B2 (en) 2005-11-11 2018-06-05 Delta Faucet Company Integrated electronic shower system
US11267003B2 (en) 2005-05-13 2022-03-08 Delta Faucet Company Power sprayer

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8127967B1 (en) * 2003-04-22 2012-03-06 University Of South Florida Volumetric control apparatus for fluid dispensing
US7690395B2 (en) 2004-01-12 2010-04-06 Masco Corporation Of Indiana Multi-mode hands free automatic faucet
US20060151523A1 (en) * 2005-01-12 2006-07-13 Michael Fetzer Metered liquid dispenser
US7867172B1 (en) 2006-11-09 2011-01-11 Dingane Baruti Combination toothbrush and peak flow meter system
US9243756B2 (en) 2006-04-20 2016-01-26 Delta Faucet Company Capacitive user interface for a faucet and method of forming
US8089473B2 (en) 2006-04-20 2012-01-03 Masco Corporation Of Indiana Touch sensor
US8365767B2 (en) 2006-04-20 2013-02-05 Masco Corporation Of Indiana User interface for a faucet
US8066151B2 (en) * 2006-06-21 2011-11-29 Valvano Jr Michael A Measuring fluid dispenser
US7699993B2 (en) * 2006-09-29 2010-04-20 Barnstead Thermolyne Corporation Methods for wirelessly operating water purification systems
US7824543B2 (en) * 2006-09-29 2010-11-02 Barnstead Themolyne Corporation Wireless water purification systems and wireless remote dispensing devices for water purification systems
US9243392B2 (en) 2006-12-19 2016-01-26 Delta Faucet Company Resistive coupling for an automatic faucet
WO2008094651A1 (en) 2007-01-31 2008-08-07 Masco Corporation Of Indiana Capacitive sensing apparatus and method for faucets
US7806141B2 (en) 2007-01-31 2010-10-05 Masco Corporation Of Indiana Mixing valve including a molded waterway assembly
CA2675417C (en) 2007-03-28 2015-10-13 Masco Corporation Of Indiana Improved capacitive touch sensor
MX2010006473A (en) 2007-12-11 2010-09-22 Masco Corp Capacitive coupling arrangement for a faucet.
EP2255261A2 (en) * 2008-02-20 2010-12-01 Edo Lang Control device for plumbing appliances
GB2462055A (en) * 2008-06-05 2010-01-27 Priestman Goode Water volume measurement device based on rate of flow
US9009883B2 (en) * 2008-10-27 2015-04-21 Whirlpool Corporation Backsplash with pot filler
US8720464B2 (en) * 2009-10-13 2014-05-13 Lg Electronics Inc. Method for controlling water supply amount and refrigerator using the same
US8561626B2 (en) 2010-04-20 2013-10-22 Masco Corporation Of Indiana Capacitive sensing system and method for operating a faucet
US8847727B2 (en) * 2010-04-26 2014-09-30 David Alan Shapiro Electronically-controlled water dispensing system
US20120047988A1 (en) * 2010-08-25 2012-03-01 Ecolab Usa Inc Method, apparatus and system for accurately measuring and calibrating liquid components dispensed from a dispenser
CA2869819C (en) 2012-04-20 2016-11-15 Masco Corporation Of Indiana Faucet including a pullout wand with capacitive sensing
US10675573B2 (en) 2015-01-22 2020-06-09 Culligan International Company Remote control faucet filter system
US10152879B2 (en) 2015-11-10 2018-12-11 Industrial Technology Research Institute Method, apparatus, and system for monitoring manufacturing equipment
US11022986B2 (en) * 2018-05-07 2021-06-01 Phillips 66 Company Pipeline interchange
US11519160B2 (en) 2018-09-17 2022-12-06 Delta Faucet Company Metered dispense pot filler
WO2020219883A1 (en) * 2019-04-24 2020-10-29 Fb Global Plumbing Group Llc Electronic plumbing fixture fitting including measurement system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6598245B2 (en) * 2001-01-19 2003-07-29 San-Ei Faucet Mfg. Co., Ltd Automatic water feed method in lavatory and automatic water feed mechanism in lavatory

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3651989A (en) * 1970-03-24 1972-03-28 Milton D Westrich Liquid metering system
US3672479A (en) 1970-10-02 1972-06-27 Seeburg Corp Apparatus for providing a predetermined volume of liquid
US3762440A (en) 1971-12-21 1973-10-02 R Bryant Metered water faucet
US3756456A (en) * 1972-05-22 1973-09-04 Graco Inc Apparatus and method for a metering system
JPS53123965A (en) * 1977-04-05 1978-10-28 Aigner Georg Flow meter for liquids
US4280530A (en) 1980-01-07 1981-07-28 Yi Kon H Water-flow-control device
US4532962A (en) 1984-04-20 1985-08-06 Campau Daniel N Metering apparatus for dispensing precise volumes of liquid
US4936508A (en) 1989-05-02 1990-06-26 Ingalz Thomas J Shower head volume meter with alarm signal
IT1249897B (en) * 1991-06-06 1995-03-30 Eltek Spa "INTEGRATED DEVICE FOR VOLUMETRIC CONTROL OF FLUIDS FLUID THROUGH SOLENOID VALVES, FOR MACHINES FOR DISTRIBUTING LIQUIDS AND WASHING MACHINES.
FR2685475B1 (en) 1991-12-20 1995-09-22 Luro Sarl Ets CONTROLLED DISPENSING METHOD WITH VOLUMETRIC COUNTING OF QUANTITIES DOSE OF LIQUID AND DEVICE FOR ITS IMPLEMENTATION.
US5431302A (en) 1993-12-13 1995-07-11 August Systems, Inc. Dispensed liquid volume control system
US5409037A (en) * 1994-06-06 1995-04-25 Wheeler; Jaye F. Automatic device for the detection and shutoff of excess water flow in pipes
DE29607736U1 (en) 1996-04-29 1997-08-28 Salzkotten Tankanlagen Device for dosing and measuring amounts of liquid
US6340032B1 (en) 2000-08-14 2002-01-22 Peter Zosimadis Faucet and system for use with a faucet

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6598245B2 (en) * 2001-01-19 2003-07-29 San-Ei Faucet Mfg. Co., Ltd Automatic water feed method in lavatory and automatic water feed mechanism in lavatory

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2416119A (en) * 2004-07-12 2006-01-18 Malachi Christopher Mckenna Water dispenser for a bath
US9962718B2 (en) 2005-05-13 2018-05-08 Delta Faucet Company Power sprayer
US10618066B2 (en) 2005-05-13 2020-04-14 Delta Faucet Company Power sprayer
US11267003B2 (en) 2005-05-13 2022-03-08 Delta Faucet Company Power sprayer
US9988797B2 (en) 2005-11-11 2018-06-05 Delta Faucet Company Integrated electronic shower system
US10480165B2 (en) 2005-11-11 2019-11-19 Delta Faucet Company Integrated bathroom electronic system
US11566405B2 (en) 2005-11-11 2023-01-31 Delta Faucet Company Integrated bathroom electronic system
US9715238B2 (en) 2006-04-20 2017-07-25 Delta Faucet Company Electronic user interface for electronic mixing of water for residential faucets
US9856634B2 (en) 2006-04-20 2018-01-02 Delta Faucet Company Fluid delivery device with an in-water capacitive sensor
US10698429B2 (en) 2006-04-20 2020-06-30 Delta Faucet Company Electronic user interface for electronic mixing of water for residential faucets
US11886208B2 (en) 2006-04-20 2024-01-30 Delta Faucet Company Electronic user interface for electronic mixing of water for residential faucets
US9394675B2 (en) 2010-04-20 2016-07-19 Delta Faucet Company Capacitive sensing system and method for operating a faucet

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US20060153165A1 (en) 2006-07-13
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