CA2667084A1 - Automatic dual flush activation - Google Patents

Automatic dual flush activation Download PDF

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Publication number
CA2667084A1
CA2667084A1 CA002667084A CA2667084A CA2667084A1 CA 2667084 A1 CA2667084 A1 CA 2667084A1 CA 002667084 A CA002667084 A CA 002667084A CA 2667084 A CA2667084 A CA 2667084A CA 2667084 A1 CA2667084 A1 CA 2667084A1
Authority
CA
Canada
Prior art keywords
flush
time
user
usage
usage time
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002667084A
Other languages
French (fr)
Other versions
CA2667084C (en
Inventor
John R. Wilson
Peter J. Jahrling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sloan Valve Co
Original Assignee
Sloan Valve Company
John R. Wilson
Peter J. Jahrling
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
Application filed by Sloan Valve Company, John R. Wilson, Peter J. Jahrling filed Critical Sloan Valve Company
Priority to CA2775669A priority Critical patent/CA2775669C/en
Publication of CA2667084A1 publication Critical patent/CA2667084A1/en
Application granted granted Critical
Publication of CA2667084C publication Critical patent/CA2667084C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D3/00—Flushing devices operated by pressure of the water supply system flushing valves not connected to the water-supply main, also if air is blown in the water seal for a quick flushing
    • E03D3/12—Flushing devices discharging variable quantities of water
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D5/00—Special constructions of flushing devices, e.g. closed flushing system
    • E03D5/10—Special constructions of flushing devices, e.g. closed flushing system operated electrically, e.g. by a photo-cell; also combined with devices for opening or closing shutters in the bowl outlet and/or with devices for raising/or lowering seat and cover and/or for swiveling the bowl
    • E03D5/105—Special constructions of flushing devices, e.g. closed flushing system operated electrically, e.g. by a photo-cell; also combined with devices for opening or closing shutters in the bowl outlet and/or with devices for raising/or lowering seat and cover and/or for swiveling the bowl touchless, e.g. using sensors
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S4/00—Baths, closets, sinks, and spittoons
    • Y10S4/03—Electric flushing

Abstract

A multi flush volume flush valve is in communication with an automatic flush control. The flush control determines the presence of a user and the amount of time the user uses the toilet. The usage time is compared to a predetermined time value to determine the appropriate flush volume based on an assumption regarding usage time and flush volume needs. The comparative value statistically adjusts to the restroom traffic.

Claims (16)

1. A method for controlling the flush volume of a flush valve, comprising the steps of:
detecting the presence of a user;

initiating a usage timer upon detection of a user;

stopping the timer upon the detection of the absence of the user, thereby generating a usage time t x representing elapsed time;

comparing the usage time t x to an average usage time t p or, if t p does not exist, to a preset usage time T p;

selecting a flush volume to be used for a flush event based on the comparison, and if T p was used for the comparison, averaging T p and t x to generate average usage time t p;

if t p was used for the comparison, averaging t p and t x to generate a new average usage time which becomes t p.
2. The method of c1aim 1, wherein T p is t1, a predetermined average liquid waste use time and further wherein selecting the flush volume comprises if t x is greater than t1, then selecting a full volume flush, and if t x is less than t1, then selecting a reduced volume flush.
3. The method of claim 1, wherein t p is t s, a predetermined average solid waste use time and further wherein selecting the flush volume comprises if t x is greater than t s, then selecting a full volume flush and if t x is less than t1, then selecting a reduced volume flush.
4. A method for controlling the flush volume of a flushometer comprising the steps of:
monitoring for the presence of a user;

detecting the presence of a user;

initiating a usage timer upon detection of the user;

generating a usage time t x that equals time elapsed as determined from the usage timer when the user is no longer detected;

determining if the number of cycles n c that the flushometer has undergone is less than a predetermined number of cycles N p;

if n c < N p, then determining if the usage time t x is greater than or equal to a preset usage time value T p where if t x is greater than or equal to the preset value T p, then a full volume flush is performed, and if t x is less than the preset value T p, then a reduced volume flush is performed;

if N c > N p, then determining if the usage time t x is greater than or equal to a calculated average usage time t p where if t x is greater than or equal to the calculated average usage time t p, then a full volume flush is performed, and if t x is less than the predetermined average usage time t p, then a reduced volume flush is performed; and modifying t p according to the value of t x.
5. The method of claim 4, wherein T p and t p further comprises a measure of liquid waste usage, preset and average usage values, T1 and t1 respectively.
6. The method of claim 5, further comprising, modifying t1 based on t x to calculate a new t1.
7. The method of claim 4, wherein T p and t p further comprises a measure of liquid waste usage, preset and average usage values, T s and t s respectively.
8. The method of claim 7, further comprising, modifying t s based on t x to calculate a new t s.
9. The method of claim 4, further comprising storing the time t x in a memory unit.
10. The method of claim 4, wherein detecting the user comprises the use of a sensor selected from the group consisting of infrared, capacitance, weight, thermal motion, and combinations thereof.
11. A system for controlling the flush volume of a flush valve, comprising a flush valve, a unit capable of reading and allowing the execution of program code, a sensor, a timer, program code, the program code causing, when executed, one or more machines to perform the following method steps:

determining the presence of a user;

upon determination of the presence of a user, initiating a usage timer;

stopping the timer upon the detection of the absence of the user, generating a usage time t x, and determining if the usage time t x is greater than or equal to a predetermined average liquid waste use time (t1) if t x is greater than or equal to t1, then a full volume flush is performed, if t x is less than t1, then a reduced volume flush is performed.
12. The program product of claim 11, further comprising, if t x is greater than or equal to t1, then modifying t1 based on t x to calculate a new T1.
13. The program product of claim 11, further comprising a predetermined average solid waste use time (t s).
14. The program product of claim 13, further comprising, if t x is greater than t1, then modifying t s based on t x to calculate a new t s.
15. The program product of claim 11, further comprising storing the time t x in a memory unit
16. The program product of claim 11, wherein detecting the user comprises the use of a sensor selected from the group consisting of infrared, capacitance, weight, thermal, motion, and combinations thereof.
CA2667084A 2006-09-29 2007-09-27 Automatic dual flush activation Active CA2667084C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2775669A CA2775669C (en) 2006-09-29 2007-09-27 Automatic dual flush activation

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US84843906P 2006-09-29 2006-09-29
US60/848,439 2006-09-29
PCT/US2007/079788 WO2008042728A1 (en) 2006-09-29 2007-09-27 Automatic dual flush activation

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA2775669A Division CA2775669C (en) 2006-09-29 2007-09-27 Automatic dual flush activation

Publications (2)

Publication Number Publication Date
CA2667084A1 true CA2667084A1 (en) 2008-04-10
CA2667084C CA2667084C (en) 2012-07-10

Family

ID=38925703

Family Applications (2)

Application Number Title Priority Date Filing Date
CA2775669A Active CA2775669C (en) 2006-09-29 2007-09-27 Automatic dual flush activation
CA2667084A Active CA2667084C (en) 2006-09-29 2007-09-27 Automatic dual flush activation

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA2775669A Active CA2775669C (en) 2006-09-29 2007-09-27 Automatic dual flush activation

Country Status (8)

Country Link
US (3) US8234724B2 (en)
CN (1) CN101535577B (en)
AU (1) AU2007304921B2 (en)
CA (2) CA2775669C (en)
HK (1) HK1137788A1 (en)
MX (2) MX341476B (en)
TW (1) TWI390097B (en)
WO (1) WO2008042728A1 (en)

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Also Published As

Publication number Publication date
TW200827510A (en) 2008-07-01
US20120266373A1 (en) 2012-10-25
CN101535577A (en) 2009-09-16
CA2667084C (en) 2012-07-10
CA2775669A1 (en) 2008-04-10
AU2007304921A1 (en) 2008-04-10
US8561225B2 (en) 2013-10-22
CN101535577B (en) 2013-01-02
WO2008042728A1 (en) 2008-04-10
CA2775669C (en) 2014-06-10
MX2009003374A (en) 2009-05-11
HK1137788A1 (en) 2010-08-06
TWI390097B (en) 2013-03-21
AU2007304921B2 (en) 2011-06-16
US9499965B2 (en) 2016-11-22
US20140026308A1 (en) 2014-01-30
US8234724B2 (en) 2012-08-07
US20080078014A1 (en) 2008-04-03
MX341476B (en) 2016-08-22

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