CA2067504A1 - Professional espresso coffee maker for bar-room use - Google Patents
Professional espresso coffee maker for bar-room useInfo
- Publication number
- CA2067504A1 CA2067504A1 CA002067504A CA2067504A CA2067504A1 CA 2067504 A1 CA2067504 A1 CA 2067504A1 CA 002067504 A CA002067504 A CA 002067504A CA 2067504 A CA2067504 A CA 2067504A CA 2067504 A1 CA2067504 A1 CA 2067504A1
- Authority
- CA
- Canada
- Prior art keywords
- coffee maker
- resistor
- water
- boiler
- coffee
- 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.)
- Abandoned
Links
- 235000016213 coffee Nutrition 0.000 title claims abstract description 54
- 235000013353 coffee beverage Nutrition 0.000 title claims abstract description 54
- 235000015114 espresso Nutrition 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000012384 transportation and delivery Methods 0.000 claims abstract description 9
- 235000015116 cappuccino Nutrition 0.000 claims abstract description 5
- 238000005266 casting Methods 0.000 claims description 8
- 230000004913 activation Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005325 percolation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241001122767 Theaceae Species 0.000 description 1
- 235000015123 black coffee Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/44—Parts or details or accessories of beverage-making apparatus
- A47J31/46—Dispensing spouts, pumps, drain valves or like liquid transporting devices
- A47J31/462—Dispensing spouts, pumps, drain valves or like liquid transporting devices with an intermediate liquid storage tank
- A47J31/465—Dispensing spouts, pumps, drain valves or like liquid transporting devices with an intermediate liquid storage tank for the heated water
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/007—Apparatus for making beverages for brewing on a large scale, e.g. for restaurants, or for use with more than one brewing container
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/24—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure
- A47J31/34—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure
- A47J31/36—Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under pressure with hot water under liquid pressure with mechanical pressure-producing means
Abstract
A professional espresso coffee maker for bar-room use (1), which is adapted to deliver espresso coffee, cappuccino, and the like, and can provide espresso coffee of superior quality, comprises an electronic control apparatus (2), steam and hot water delivery devices (7, 8, 9, 10), a plurality of dispensing bodies (5) adapted to receive respective percolator holding handles (6), and a water heater (22) associated with each of the dispensing bodies (5) to instantaneously heat the water to be supplied to the percolator holding handle (6).
Description
W09i/07898 2 0 6 7 ~ O ~ ; PCT/EP90/01753 `
A professional espresso coffee maker for bar-room'usep`
DESCRIPTION
This invention relates to a professional "espresso"
coffee maker for bar-room use, which is of the type specified in the pre-characterizing part of the main claim.
As is known, coffee makers of this kind are to perform several different functions, they being expected to prepare a variety of drinks such as black coffee, notably espresso coffee, white coffee or "cappuccino", tea, and punch.
The demand for an ab;lity to have such drinks prepared in a proper, satisfactory manner, especially where espresso coffee and cappuccino are involved for wh;ch the consumer is unwilling to accept a quality less than irreproachable, has resulted in a highly corrplicated machine construction, particularly in the respect of water and steam processing.
Unfortunately, this complex construction associates with difficult machine setting, and hence the likelihood that drinks be delivered in actual use which are less than fully satisfactory.
The problem that underlies this invention is to provide a machine which can meet such requirements and at the same t;me overcome the above-noted def;c;encies.
This invent;on has been developec' from the solutive idea of having the water required for espresso coffee making heated instantanecusly and ind;viduallr.
Based on this sclutive idea, and to solve the above-noted technical problem, this invention provides a professional espresso coffee maker of the type specified in the characterizing part of the main claim.
Further features and the advartages of a machine according to this invention will be apparent from the following detailed SUBSTITUTE SHEET
.
~o61S~4 ; ~
descriptior of a preferred embodiment thereof, given by way OT non-limitative example with reference to the accompanying drawing figures, where:
Figure 1 shows schematically a professional espresso coffee maker for bar-room use, according to this invention;
Figure 2 is a part-sectional, elevation view of a detail of the coffee maker shown in Figure 1;
Figure 3 is a part-sectional, elevatior view of the same detail as shown in Figure 2, but according to a modified embodiment of the invention;
Figure 4 is a top view of the detail shown in Figure 3, in the direction of the arrow IV;
Figure 5 is a sectional view of the detail shown in Figure 3, taken along the line V-V; and Figure 6 is an enlarged scale, sectional view of a portion of the detail shown in Figure 3.
With reference to the drawing views, ganerally shown at 1 is a professional espresso coffee maker intended for bar-room use.
The coffee maker 1 includes an electronic control apparatus 2 provided with a keyboard 3 having coffee delivery control keys 3a, and a display 4.
The coffee maker 1 further includes a plurality of dispensing bodies, all identical with one another and collectively designated 5, being each adapted to receive, in a detachable manner, a respective a percolator holding handle 6 for the delivery of single-dose espresso coffee.
The machine 1 also includes steam and hot water delivery devices, among which are a hot wàter delivery nozzle 7 for SUBSTITUTE SHEET
....
.
, . . , .
:. .
- WO 91/07898 PCI`/EP90/017;3 ,~ ` 2067~04 , ., preparing ~ea, punch, and the like, t~o steam deilivery nozzles 8 and 9 for preparing cappuccino, and a nozzle 10 for delivering steam to a cu~ heater device 11.
The machine l has a ccmmon water feed line, indicated at 1Z, which can be connected to a water supply 13 and includes a decalcifying device, generally shown at 14, for sGftening the supply water.
For supplying the nozzles w;th water and steam according to necessity, ar electrically fired boiler 15 is provided which is connected to the line 12, dcwnstream from the decalcifying device 14 through a conduit 16 wherein there are connected a pump 17 and a pulsed meter 18, of a relatively small size, such as a metering turbine, ~hich can issue pulses over a lead 19 in proportional numbers to the amounts of water flowing therethrough.
Each d;spensing body 5 is connected to the line 12, downstream from the decalcifying device 14, by a respective conduit 20 and is provided with a cut-off sclenoid valve 21 Tor cutting off the water feed to the percolator holding handle 6.
The machine 1 has, for each disoensing body 5, a heater 22 which is associated with the dispensing body 5 to instantaneously and individually heat the water for the fixed handle 6 independently of the other dispensing bodies.
Preferably, the heater Z2 comprises an electric resistor 23 and a coil pipe 24 formed along the ccnduit 20. The electric resistor 23 and coil pipe 24 are received along respective paths 25 and 26 formed in a solid block 27 made of a good heat conducting material such as aluminum.
SUBSTITUTE SHEET
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. . ... . . .
- .. .. . .......... . -.
.. . . - . . . ~ , .
WO 91/07898 PCI'~EP90/01~;3 ; 20~ ~
4 - i The block 27 is juxtaposed to t~,e dispensing body 5, and located above the latter.
The block 27 is a single casting S0 of aluminum wherein the resistor 23 and ccil pipe 24 are embedded. ¦ -The single casting 50 has a top face SGa whereat the resistor 23 locates and a bottom face SOb which is juxtaDosed to the dispensing body.
The coil pipe Z4 hcs a water inlet 24a which locates next to the bottom face 50b of the single casting and a water outlet 24b which locates next to the top face 50a.
Connected in the conduit Z0 upstream of the ccil pipe Z4 are a pum~ 33 and a pulse meter 34 which supplies, through a a lead 35, pulses in proportional numbers to the amounts of water flowing therethrough.
The electronic apparatus 2 includes a pulse counter unit 36 which is supplied, over the leads 19 ard 35, with the pulses from the meters 1& and 24, said urit 36 being operative te compute the total number of the pulses and to warn of a prèdetermined total numDer of pulses having been reached which corresponds to the amount of water requiring re~lacement of the decalcifying device 14.
Associated w;th each heater 22 in the machine 1 is a temperature sensor 37, for sensing the water temperature and issuing, over a lead 3~, a signal proportional to the temperature sensed. The electronic apparatus 2 has a storage and comparator unit 39 which is supplied orce for all with predetermined temperature increments ard continuously with the temperature sensed to stepwise reduce down to zero the electric power dissipated through the resistor 23 on the sensed trmperature SUBSTITUTE SHEET
~ - , - - .
-,, ' .~ .
' ' ' .
,~.
.` . ' .
WO 91/07898 PCl/EP9OilD~753 20~q~
passing said step values.
The sensor 37 is mounted close to the bottom face 50b juxtaposed to the dispensing body.
The electronic control 2 includes a power process;ng, logic unit 40 adapted to take account of the electric power being dissipated through the boiler 15 and of the, possibly reduced, power dissipated through the resistors Z3, thereby de-activating the boiler 15 on a predetermined total power mark being reached.
Also provided in the electronic control 2 is an AND-type logic unit 41 for activating the resistor Z3 of the heater 22 associated with each dispensing body 5 concurrently with the operation of its respective key 3a in the keyboard 3 to dispense a dose of espresso coffee.
Preferably, the activation of the resistor 23 of the heater 22 will occur at a reduced power value selected from said stepwise increments.
A modified embodiment of the block 27 will be next described with reference to Figures 3, 4, 5 and 6, wherein parts performing the same functions or having the same structures are denoted by the same reference numerals.
In this modified embodiment, the b~ock 27 comprises an upper plate 28 having a top face 2Ea and a bottom face ZEb, ard a lower plate 29 having a top face 29a juxtaposed to the bottom face 2Eb and a bottom face Z9b whereby the block 27 is juxtaposed to the dispensing bcdy 5.
The path 25 for the resistor 2~ ccmprises a channel 3~
formed in the upper plate 28, on the too face 2Ea of the latter, said channel 30 b6ing adapted to accommodate the resistor SUBSTITUTE SHEET
- . . .
, . - . ~ ~ . . - :
.
, . . .: . . . - -:
WO 91/07898 PCT/EP90/017~3 23 in a predetermined force fit relationship to be achieved by assembling under a press, for example. .
The path Z6 for the coil pipe 24 comprises a channel 31 formed ;n the lower plate 2~, on the top face 29a thereof, adapted to accom~cdate the coil pipe 24. A projection 32 formed on the upper plate 28 at the bcttom face 29b of the same interLocks with the chanrel 31 to produce, on the plates Z~
and 29 being juxtaposed, a predetermined force fit of the co;l pipe 24.
In operatior, each dispensing bcdy 5 becomes operative individuaily by activation of the resistor 23, sclenoid v~lve 21, and pump 33. With the resistor 2~ activated, the optimum temperature is attained accurately for the water by the stepwise control of the power supply to the resistor 23 as the sensed temperature approached the desired value. On reaching the optimum temperature, the machine is ready to dispense coffee.
For this purpose, the key 3a is o~erated in the keyboard 3, thus activating the solenoid valve 21, and after a predetermined time interval to be adjusted at will, preferably in the 3 to 7 seconds range, and reported on the display 4, the pump 33 is activated. During this time interval, the desired percolation through the coffee cake loaded into the percolator holding handle, i.e. wetting of the coffee cake under a low pressure, takes place. ~ith the pump 33 in operation, hot water will flow under a high pressure through the coffee cake to carry the percolation process to completion and result in espresso coffee being dispensed.
Possible deliveries of water and steam from the nozzles would take place from the boiler 15 independently of the SUBSTITUTE SHEET
....... . .
.
-.: - ; .
WO 91/07898 ` PCI/EP90/017;3 k~ 2057504;
espresso coffee being dis2ensed, without affecting the latter.
A major advantage of the coffee maker of this ;nvention is that it can dispense espresso coffee of superior qual;ty.
A further advantage of the inventive coffee maker is that the quality of the espresso coffee dispensed thereby is kept constant with precision by virtue of the accuracy with which the desired water temperature is attained at alL times thanks to the control applied to the power dissipated by the reslstor.
Percolation is also carried out ;n a smooth and constant fashion, as can be ensured by the provision of a pump for each dispensing body.
An additional advantage of the coffee maker according to this invention resides in the simple construction of the heaters, thereby it may be expected that it will operate for a Long time without requiring costly servicing.
Also improved is ease of operation, on account of the time when the decalcifying device should be replaced being indicated, by s;mple and ;nexpensive means, after a predetermined total amount of water has been used up. ~t should be noted that this total amount of water ;s measured in the conduits, and therefore in a direct and accurate manner.
This coffee maker has also proved advantageous from the standpoint of energy consumption, both on account of the highly effective heat transfer from the resistor to the coil pipe in each heater and of the relatively low value of the maximum installed power, as made possible by the power processing logic unit.
Yet another advantage resides in that the dispensing body SUBSTITUTF SHEET
... .
.. . .
,...... , ~. : . .-; ~ :
. . , :. : . .
~b6~~
is under a condition of thermal stabil;ty because of the block being juxtaposed to the dispensing body at its bottom face where the coil pipe with the water inlet is located. The resistor, being located remotely therefrom, is kept well away from the dispensing body.
~ y virtue of that, on operating the keyboard, the resistor ;s activated at the same time, the sensor response time is suppressed, and the overall espresso coffee delivery time is advantageously shortened. The activation of the resistor by controlled power affords, moreover, gradual and accurate attainment of the desired temperature.
Understandably, the coffee maker described in the foregoing may be altered and modified in several ways by a skilled person in the art to meet specific and contingent requirements, without departing from the scope of this invention as set forth in the appended claims.
SUBSTITUTE SHEET
.. .. :
- . .. . .
A professional espresso coffee maker for bar-room'usep`
DESCRIPTION
This invention relates to a professional "espresso"
coffee maker for bar-room use, which is of the type specified in the pre-characterizing part of the main claim.
As is known, coffee makers of this kind are to perform several different functions, they being expected to prepare a variety of drinks such as black coffee, notably espresso coffee, white coffee or "cappuccino", tea, and punch.
The demand for an ab;lity to have such drinks prepared in a proper, satisfactory manner, especially where espresso coffee and cappuccino are involved for wh;ch the consumer is unwilling to accept a quality less than irreproachable, has resulted in a highly corrplicated machine construction, particularly in the respect of water and steam processing.
Unfortunately, this complex construction associates with difficult machine setting, and hence the likelihood that drinks be delivered in actual use which are less than fully satisfactory.
The problem that underlies this invention is to provide a machine which can meet such requirements and at the same t;me overcome the above-noted def;c;encies.
This invent;on has been developec' from the solutive idea of having the water required for espresso coffee making heated instantanecusly and ind;viduallr.
Based on this sclutive idea, and to solve the above-noted technical problem, this invention provides a professional espresso coffee maker of the type specified in the characterizing part of the main claim.
Further features and the advartages of a machine according to this invention will be apparent from the following detailed SUBSTITUTE SHEET
.
~o61S~4 ; ~
descriptior of a preferred embodiment thereof, given by way OT non-limitative example with reference to the accompanying drawing figures, where:
Figure 1 shows schematically a professional espresso coffee maker for bar-room use, according to this invention;
Figure 2 is a part-sectional, elevation view of a detail of the coffee maker shown in Figure 1;
Figure 3 is a part-sectional, elevatior view of the same detail as shown in Figure 2, but according to a modified embodiment of the invention;
Figure 4 is a top view of the detail shown in Figure 3, in the direction of the arrow IV;
Figure 5 is a sectional view of the detail shown in Figure 3, taken along the line V-V; and Figure 6 is an enlarged scale, sectional view of a portion of the detail shown in Figure 3.
With reference to the drawing views, ganerally shown at 1 is a professional espresso coffee maker intended for bar-room use.
The coffee maker 1 includes an electronic control apparatus 2 provided with a keyboard 3 having coffee delivery control keys 3a, and a display 4.
The coffee maker 1 further includes a plurality of dispensing bodies, all identical with one another and collectively designated 5, being each adapted to receive, in a detachable manner, a respective a percolator holding handle 6 for the delivery of single-dose espresso coffee.
The machine 1 also includes steam and hot water delivery devices, among which are a hot wàter delivery nozzle 7 for SUBSTITUTE SHEET
....
.
, . . , .
:. .
- WO 91/07898 PCI`/EP90/017;3 ,~ ` 2067~04 , ., preparing ~ea, punch, and the like, t~o steam deilivery nozzles 8 and 9 for preparing cappuccino, and a nozzle 10 for delivering steam to a cu~ heater device 11.
The machine l has a ccmmon water feed line, indicated at 1Z, which can be connected to a water supply 13 and includes a decalcifying device, generally shown at 14, for sGftening the supply water.
For supplying the nozzles w;th water and steam according to necessity, ar electrically fired boiler 15 is provided which is connected to the line 12, dcwnstream from the decalcifying device 14 through a conduit 16 wherein there are connected a pump 17 and a pulsed meter 18, of a relatively small size, such as a metering turbine, ~hich can issue pulses over a lead 19 in proportional numbers to the amounts of water flowing therethrough.
Each d;spensing body 5 is connected to the line 12, downstream from the decalcifying device 14, by a respective conduit 20 and is provided with a cut-off sclenoid valve 21 Tor cutting off the water feed to the percolator holding handle 6.
The machine 1 has, for each disoensing body 5, a heater 22 which is associated with the dispensing body 5 to instantaneously and individually heat the water for the fixed handle 6 independently of the other dispensing bodies.
Preferably, the heater Z2 comprises an electric resistor 23 and a coil pipe 24 formed along the ccnduit 20. The electric resistor 23 and coil pipe 24 are received along respective paths 25 and 26 formed in a solid block 27 made of a good heat conducting material such as aluminum.
SUBSTITUTE SHEET
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. . ... . . .
- .. .. . .......... . -.
.. . . - . . . ~ , .
WO 91/07898 PCI'~EP90/01~;3 ; 20~ ~
4 - i The block 27 is juxtaposed to t~,e dispensing body 5, and located above the latter.
The block 27 is a single casting S0 of aluminum wherein the resistor 23 and ccil pipe 24 are embedded. ¦ -The single casting 50 has a top face SGa whereat the resistor 23 locates and a bottom face SOb which is juxtaDosed to the dispensing body.
The coil pipe Z4 hcs a water inlet 24a which locates next to the bottom face 50b of the single casting and a water outlet 24b which locates next to the top face 50a.
Connected in the conduit Z0 upstream of the ccil pipe Z4 are a pum~ 33 and a pulse meter 34 which supplies, through a a lead 35, pulses in proportional numbers to the amounts of water flowing therethrough.
The electronic apparatus 2 includes a pulse counter unit 36 which is supplied, over the leads 19 ard 35, with the pulses from the meters 1& and 24, said urit 36 being operative te compute the total number of the pulses and to warn of a prèdetermined total numDer of pulses having been reached which corresponds to the amount of water requiring re~lacement of the decalcifying device 14.
Associated w;th each heater 22 in the machine 1 is a temperature sensor 37, for sensing the water temperature and issuing, over a lead 3~, a signal proportional to the temperature sensed. The electronic apparatus 2 has a storage and comparator unit 39 which is supplied orce for all with predetermined temperature increments ard continuously with the temperature sensed to stepwise reduce down to zero the electric power dissipated through the resistor 23 on the sensed trmperature SUBSTITUTE SHEET
~ - , - - .
-,, ' .~ .
' ' ' .
,~.
.` . ' .
WO 91/07898 PCl/EP9OilD~753 20~q~
passing said step values.
The sensor 37 is mounted close to the bottom face 50b juxtaposed to the dispensing body.
The electronic control 2 includes a power process;ng, logic unit 40 adapted to take account of the electric power being dissipated through the boiler 15 and of the, possibly reduced, power dissipated through the resistors Z3, thereby de-activating the boiler 15 on a predetermined total power mark being reached.
Also provided in the electronic control 2 is an AND-type logic unit 41 for activating the resistor Z3 of the heater 22 associated with each dispensing body 5 concurrently with the operation of its respective key 3a in the keyboard 3 to dispense a dose of espresso coffee.
Preferably, the activation of the resistor 23 of the heater 22 will occur at a reduced power value selected from said stepwise increments.
A modified embodiment of the block 27 will be next described with reference to Figures 3, 4, 5 and 6, wherein parts performing the same functions or having the same structures are denoted by the same reference numerals.
In this modified embodiment, the b~ock 27 comprises an upper plate 28 having a top face 2Ea and a bottom face ZEb, ard a lower plate 29 having a top face 29a juxtaposed to the bottom face 2Eb and a bottom face Z9b whereby the block 27 is juxtaposed to the dispensing bcdy 5.
The path 25 for the resistor 2~ ccmprises a channel 3~
formed in the upper plate 28, on the too face 2Ea of the latter, said channel 30 b6ing adapted to accommodate the resistor SUBSTITUTE SHEET
- . . .
, . - . ~ ~ . . - :
.
, . . .: . . . - -:
WO 91/07898 PCT/EP90/017~3 23 in a predetermined force fit relationship to be achieved by assembling under a press, for example. .
The path Z6 for the coil pipe 24 comprises a channel 31 formed ;n the lower plate 2~, on the top face 29a thereof, adapted to accom~cdate the coil pipe 24. A projection 32 formed on the upper plate 28 at the bcttom face 29b of the same interLocks with the chanrel 31 to produce, on the plates Z~
and 29 being juxtaposed, a predetermined force fit of the co;l pipe 24.
In operatior, each dispensing bcdy 5 becomes operative individuaily by activation of the resistor 23, sclenoid v~lve 21, and pump 33. With the resistor 2~ activated, the optimum temperature is attained accurately for the water by the stepwise control of the power supply to the resistor 23 as the sensed temperature approached the desired value. On reaching the optimum temperature, the machine is ready to dispense coffee.
For this purpose, the key 3a is o~erated in the keyboard 3, thus activating the solenoid valve 21, and after a predetermined time interval to be adjusted at will, preferably in the 3 to 7 seconds range, and reported on the display 4, the pump 33 is activated. During this time interval, the desired percolation through the coffee cake loaded into the percolator holding handle, i.e. wetting of the coffee cake under a low pressure, takes place. ~ith the pump 33 in operation, hot water will flow under a high pressure through the coffee cake to carry the percolation process to completion and result in espresso coffee being dispensed.
Possible deliveries of water and steam from the nozzles would take place from the boiler 15 independently of the SUBSTITUTE SHEET
....... . .
.
-.: - ; .
WO 91/07898 ` PCI/EP90/017;3 k~ 2057504;
espresso coffee being dis2ensed, without affecting the latter.
A major advantage of the coffee maker of this ;nvention is that it can dispense espresso coffee of superior qual;ty.
A further advantage of the inventive coffee maker is that the quality of the espresso coffee dispensed thereby is kept constant with precision by virtue of the accuracy with which the desired water temperature is attained at alL times thanks to the control applied to the power dissipated by the reslstor.
Percolation is also carried out ;n a smooth and constant fashion, as can be ensured by the provision of a pump for each dispensing body.
An additional advantage of the coffee maker according to this invention resides in the simple construction of the heaters, thereby it may be expected that it will operate for a Long time without requiring costly servicing.
Also improved is ease of operation, on account of the time when the decalcifying device should be replaced being indicated, by s;mple and ;nexpensive means, after a predetermined total amount of water has been used up. ~t should be noted that this total amount of water ;s measured in the conduits, and therefore in a direct and accurate manner.
This coffee maker has also proved advantageous from the standpoint of energy consumption, both on account of the highly effective heat transfer from the resistor to the coil pipe in each heater and of the relatively low value of the maximum installed power, as made possible by the power processing logic unit.
Yet another advantage resides in that the dispensing body SUBSTITUTF SHEET
... .
.. . .
,...... , ~. : . .-; ~ :
. . , :. : . .
~b6~~
is under a condition of thermal stabil;ty because of the block being juxtaposed to the dispensing body at its bottom face where the coil pipe with the water inlet is located. The resistor, being located remotely therefrom, is kept well away from the dispensing body.
~ y virtue of that, on operating the keyboard, the resistor ;s activated at the same time, the sensor response time is suppressed, and the overall espresso coffee delivery time is advantageously shortened. The activation of the resistor by controlled power affords, moreover, gradual and accurate attainment of the desired temperature.
Understandably, the coffee maker described in the foregoing may be altered and modified in several ways by a skilled person in the art to meet specific and contingent requirements, without departing from the scope of this invention as set forth in the appended claims.
SUBSTITUTE SHEET
.. .. :
- . .. . .
Claims (18)
1. A professional espresso coffee maker for bar-room use (1), adapted for preparation of espresso coffee, cappuccino, and the like, comprising a plurality of dispensing bodies (5) adapted to receive respective percolator holding handles (6), steam and hot water delivery devices (7,8,9,10), and an electronic control apparatus (2), characterized in that it comprises a water heater (22) associated with each of the dispensing bodies (5) to instantaneously heat the water to be supplied to the percolator holding handle (6).
2. A coffee maker (1) according to Claim 1, characterized in that said water heater (22) comprises an electric resistor (23) and a coil pipe (24) formed along a conduit (20) connecting the dispensing body (5) to a common water supply line (12).
3. A coffee maker (1) according to Claim 1, characterized in that said water heater (22) comprises a solid block (27) of a good heat conductive material and a path (25) formed in said block (27) to accommodate the resistor (23) and a path (26) formed in said block (27) to accommodate the coil pipe (24).
4. A coffee maker (1) according to Claim 3, characterized in that the block (27) is juxtaposed to the dispensing body (5) at a location overlying the latter.
5. A coffee maker (1) according to Claim 4, characterized in that said solid block (27) is a single casting (50) of aluminum or the like material, wherein the resistor (23) and coil pipe (24) are embedded, the single casting (50) being juxtaposed to the dispensing body (5) at its bottom face (50b).
6. A coffee maker (1) according to Claim 5, characterized in that the coil pipe (24) has a water inlet (24a) located next to the bottom face (50b) of the single casting (50) and a water outlet (24b) located next to the top face (50a) of the single casting (50).
7. A coffee maker (1) according to Claim 6, characterized in that the electric resistor (23) is located next to the top face (50a) of the single casting (50).
8. A coffee maker (1) according to Claim 4, characterized in that said solid block (27) comprises an upper plate (28) and a lower plate (29), juxtaposed to each other, and in that the path (25) for the resistor (23) comprises a channel (30) provided on the top face (28a) of the upper plate (28), and the path (26) for the coil pipe (24) comprises a channel (31) provided on the top face (29a) of the lower plate (29), the lower plate (29) being juxtaposed to the dispensing body (5) at its bottom face (29b).
9. A coffee maker (1) according to Claim 8, characterized in that the upper plate (28) comprises a projection (32) formed on the bottom face (28b) in interlocked engagement with the channel (31) formed on the top surface (29a) of the lower plate (29).
10. A coffee maker (1) according to Claim 9, characterized in that the resistor (23) and coil pipe (24) are a predetermined force fit in their respective channels (30,31).
11. A coffee maker (1) according to Claim 1, characterized in that it comprises a supply boiler (15) for the steam and hot water delivery devices (7,8,9,10) connected, by a conduit (16), to the common water supply line (12).
12. A coffee maker (1) according to Claim 11, characterized in that it comprises a pump (17) connected in the boiler conduit (16) and a pump (33) connected in each of the dispensing body (5) conduits (20).
13. A coffee maker (1) according to Claim 11, characterized in that it comprises, connected in the boiler conduit (16) and the dispensing body (5) conduits (20), respective meters (18,34) operative to issue pulses in proportional numbers to the amount of water flowing therethrough, and a pulse counter unit (36) incorporated to said electronic apparatus (2) to which said pulses are supplied and being operative to compute the total number of the pulses and to indicate that a predetermined number of the pulses corresponding to the amount of water has been reached which makes replacement of a decalcifying device necessary.
14. A coffee maker (1) according to Claims 5 and 8, characterized in that it comprises a temperature sensor (37) associated with each of the heaters (22) to sense the water temperature, a storage and comparator unit (39) incorporated to said electronic apparatus (2) and supplied once for all with stops temperature values, to thereby reduce stepwise down to zero the electric power being supplied to the resistor (23) on the temperature sensed passing said stepwise values.
15. A coffee maker (1) according to Claim 14, characterized in that the sensor (37) is mounted to the block (27) close to the bottom face (29b) juxtaposed to the dispensing body (5).
16. A coffee maker (1) according to Claim 11, characterized in that the boiler (15) is an electrically fired boiler, and that the electronic control apparatus (2) includes a power processing logic unit (40) adapted to take account of the electric power being dissipated through the boiler (15) and of the possibly reduced stepwise power being dissipated through the resistors (23), to thereby de-activate the boiler (15) on a predetermined overall safe level being exceeded.
17. A coffee maker (1) according to Claim 14, characterized in that the electronic control apparatus (Z) incorporates an AND-type logic unit (41) for activating the resistor (23) of the heater (22) associated with each of the dispensing bodies (5) concurrently with operation of a keyboard (3) to deliver a dose of espresso coffee.
18. A coffee maker (1) according to Claim 17, characterized in that the activation of the heater (22) resistor (23) occurs at a reduced power value selected from said stepwise values.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT02252989A IT1237141B (en) | 1989-11-28 | 1989-11-28 | PROFESSIONAL ESPRESSO COFFEE MACHINE FOR BARS |
| IT22529-A/89 | 1989-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2067504A1 true CA2067504A1 (en) | 1991-05-29 |
Family
ID=11197478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002067504A Abandoned CA2067504A1 (en) | 1989-11-28 | 1990-10-17 | Professional espresso coffee maker for bar-room use |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US5259297A (en) |
| EP (1) | EP0502851B1 (en) |
| AT (1) | ATE118321T1 (en) |
| AU (1) | AU648273B2 (en) |
| CA (1) | CA2067504A1 (en) |
| DE (1) | DE69017041T2 (en) |
| DK (1) | DK0502851T3 (en) |
| ES (1) | ES2071117T3 (en) |
| GR (1) | GR3015148T3 (en) |
| IT (1) | IT1237141B (en) |
| WO (1) | WO1991007898A1 (en) |
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| TW308398U (en) * | 1992-07-01 | 1997-06-11 | Sintra Holding Ag | Appliance for prepartion of hot drink |
| IL112249A (en) | 1994-01-25 | 2001-11-25 | Warner Lambert Co | Pharmaceutical compositions containing di and tricyclic pyrimidine derivatives for inhibiting tyrosine kinases of the epidermal growth factor receptor family and some new such compounds |
| US5481260A (en) * | 1994-03-28 | 1996-01-02 | Nordson Corporation | Monitor for fluid dispensing system |
| FR2742645B1 (en) * | 1995-12-21 | 1998-02-13 | Reneka Ind Sa | COFFEE MACHINE SAID "EXPRESSO" INCLUDING AN INDIVIDUAL BOILER FOR EACH COFFEE PREPARATION GROUP |
| EP0780079B1 (en) * | 1995-12-21 | 2000-02-02 | Reneka International | Individual unit for preparation and distribution of coffee, for a coffee machine of the 'espresso'type |
| US5865096A (en) * | 1998-07-24 | 1999-02-02 | Sanden Corp. | Coffee brewing apparatus |
| DE19841680C1 (en) * | 1998-09-11 | 2000-03-02 | Palux Ag | Drink preparation machine, e.g. coffee machine, has pressure increasing stage, produces first/second pressure for pressurized/brewed coffee in first drink region depending on mode switch |
| ES2186529B1 (en) * | 2001-03-21 | 2004-02-01 | Aranda Valentin Fuertes | EROGADOR GROUP OF AUTONOMOUS HEATING AND REGULATION FOR EXPRESS COFFEE MACHINES |
| ITMI20020244U1 (en) * | 2002-05-07 | 2003-11-07 | Dalla Corte S R L | ESPRESSO COFFEE MACHINE WITH A PLURALITY OF BREWING GROUPS |
| US20060112830A1 (en) * | 2004-11-26 | 2006-06-01 | Pasquini Imports, Inc. | Espresso coffee machine |
| FR2885290B1 (en) | 2005-05-04 | 2007-06-01 | Seb Sa | COFFEE MACHINE WITH SEVERAL INFUSION HEADS |
| SI1764014T1 (en) | 2005-09-20 | 2009-04-30 | Nestec Sa | Thermoblock-based beverage production device with brewing chambers |
| PT1882433E (en) * | 2006-07-24 | 2008-08-07 | Gruppo Cimbali Spa | Coffee machine having a dispenser with independent heating |
| ITPN20060060A1 (en) * | 2006-08-04 | 2008-02-05 | Cma Spa | COFFEE MACHINE FOR THE PREPARATION AND SELECTIVE DISTRIBUTION OF COFFEE, CAPPUCCINO AND BEVERAGES INFUSED BY VARIOUS KIND, AND WORKING CYCLE FOR SUCH A COFFEE MACHINE |
| AU2009235593A1 (en) * | 2008-04-07 | 2009-10-15 | Nestec S.A. | Beverage preparation device with in-line scale removal system and descaling method using such system |
| ATE525941T1 (en) | 2009-10-23 | 2011-10-15 | Gruppo Cimbali Spa | COFFEE MACHINE WITH DISPENSING PRESSURE REGULATION AND ASSOCIATED METHOD |
| US8616116B2 (en) * | 2010-03-01 | 2013-12-31 | Concordia Coffee Company, Inc. | High speed brewing apparatus |
| US8661967B2 (en) * | 2011-03-07 | 2014-03-04 | Guy Hanan GONEN | Coffee-making machine with semi-external high voltage halogen or infra red heating element |
| CH706695A2 (en) | 2012-06-19 | 2013-12-31 | C3 Casting Competence Ct Gmbh | Heater. |
| CN104602578A (en) * | 2012-08-16 | 2015-05-06 | 吉迪恩·杜瓦尔 | Device and system for brewing infused beverages |
| ITBS20130037A1 (en) * | 2013-03-21 | 2014-09-22 | Bsh Italia S R L | COFFEE MACHINE' |
| ES2707983T3 (en) * | 2014-06-27 | 2019-04-08 | Gruppo Cimbali Spa | Improved device for moistening a dose of ground coffee in coffee machines having a heating element in the dispensing unit and wetting method |
| CH710142A1 (en) * | 2014-09-23 | 2016-03-31 | Schaerer Ag | Vending Machine, in particular coffee, and method for operating such a vending machine. |
| ITUB20155131A1 (en) | 2015-10-21 | 2017-04-21 | Elektra S R L | PROFESSIONAL COFFEE MACHINE. |
| ITUB20154971A1 (en) * | 2015-10-21 | 2017-04-21 | Elektra S R L | PROFESSIONAL COFFEE MACHINE. |
| ITUB20160433A1 (en) * | 2016-02-03 | 2017-08-03 | La Marzocco Srl | Dispensing group for a machine for preparing espresso coffee with front insertion of the filter holder |
| DK3610763T3 (en) | 2018-08-16 | 2021-05-25 | Cup&Cino Kaffeesystem Vertrieb Gmbh & Co Kg | COFFEE MACHINE FOR PREPARING A HOT BEVERAGE |
| US11147409B2 (en) * | 2019-01-17 | 2021-10-19 | Carimali S.P.A. | Device and process for controlling the extraction pressure of coffee in an espresso coffee machine |
| IT201900001623A1 (en) | 2019-02-05 | 2020-08-05 | La Marzocco Srl | Coffee grinder machine with improved dosing system and relative method |
| NL2023461B1 (en) * | 2019-07-08 | 2021-02-02 | William Ronald Van Gelderen Alfred | Water dispensing system for a beverage such as coffee and method for brewing coffee |
| DE102020206805A1 (en) * | 2020-05-29 | 2021-12-02 | Bellezza Espressomaschinen Gmbh | Brew group for an espresso machine and espresso machine with a corresponding brew group |
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| US1631753A (en) * | 1927-06-07 | Electric heatek | ||
| GB932979A (en) * | 1960-01-08 | 1963-07-31 | George Regan Bunn | Beverage making machine |
| US3314357A (en) * | 1960-09-24 | 1967-04-18 | Valente Carlo Ernesto | Machine for making cream-coffee |
| US3485162A (en) * | 1968-04-01 | 1969-12-23 | Universal Oil Prod Co | Beverage preparation and dispensing apparatus |
| US3824914A (en) * | 1973-05-16 | 1974-07-23 | S Casiano | Expresso coffee machine |
| IT1104483B (en) * | 1978-11-17 | 1985-10-21 | Francesco Bonanno | ESPRESSO COFFEE MACHINE WITH BUILT-IN PUMP AND PURIFIER |
| IT1131532B (en) * | 1980-06-06 | 1986-06-25 | Cimbali Giuseppe Spa Off | PERFECTED THERMAL REGULATION COFFEE MACHINE |
| FR2506592B1 (en) * | 1981-06-02 | 1987-02-27 | Letallec Francois | EXPRESS COFFEE MACHINE WITH INDEPENDENT GROUPS |
| US4565121A (en) * | 1983-11-29 | 1986-01-21 | Toshiba Heating Appliances Co., Ltd. | Apparatus for use in preparing infusions |
| IT8453440V0 (en) * | 1984-05-29 | 1984-05-29 | Hogar Srl | MACHINE FOR THE PREPARATION OF ESPRESSO COFFEE, PARTICULARLY FOR DOMESTIC USE |
| IT1222001B (en) * | 1987-07-09 | 1990-08-31 | Lucio Grossi | AUTOMATIC COMPACT MACHINE FOR THE PRODUCTION OF COFFEE AND INFUSIONS, PARTICULARLY FOR DOMESTIC USE |
| ATE75588T1 (en) * | 1988-02-18 | 1992-05-15 | San Marco Spa | COFFEE MACHINE WITH MICROPROCESSOR AND WITH A CONTROL DEVICE FOR CONTINUOUS OPERATION. |
| IT1234889B (en) * | 1988-06-23 | 1992-06-02 | San Marco Spa | ELECTRONIC ESPRESSO COFFEE MACHINE, EQUIPPED WITH EMERGENCY CONTROL. |
-
1989
- 1989-11-28 IT IT02252989A patent/IT1237141B/en active IP Right Grant
-
1990
- 1990-10-17 AT AT90914915T patent/ATE118321T1/en not_active IP Right Cessation
- 1990-10-17 WO PCT/EP1990/001753 patent/WO1991007898A1/en active IP Right Grant
- 1990-10-17 DE DE69017041T patent/DE69017041T2/en not_active Expired - Fee Related
- 1990-10-17 AU AU65207/90A patent/AU648273B2/en not_active Ceased
- 1990-10-17 US US07/847,021 patent/US5259297A/en not_active Expired - Fee Related
- 1990-10-17 EP EP90914915A patent/EP0502851B1/en not_active Expired - Lifetime
- 1990-10-17 CA CA002067504A patent/CA2067504A1/en not_active Abandoned
- 1990-10-17 ES ES90914915T patent/ES2071117T3/en not_active Expired - Lifetime
- 1990-10-17 DK DK90914915.5T patent/DK0502851T3/en active
-
1995
- 1995-02-22 GR GR950400368T patent/GR3015148T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE69017041T2 (en) | 1995-06-14 |
| IT8922529A1 (en) | 1991-05-28 |
| AU648273B2 (en) | 1994-04-21 |
| GR3015148T3 (en) | 1995-05-31 |
| ES2071117T3 (en) | 1995-06-16 |
| DE69017041D1 (en) | 1995-03-23 |
| IT1237141B (en) | 1993-05-24 |
| ATE118321T1 (en) | 1995-03-15 |
| AU6520790A (en) | 1991-06-26 |
| US5259297A (en) | 1993-11-09 |
| WO1991007898A1 (en) | 1991-06-13 |
| DK0502851T3 (en) | 1995-04-24 |
| EP0502851B1 (en) | 1995-02-15 |
| EP0502851A1 (en) | 1992-09-16 |
| IT8922529A0 (en) | 1989-11-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |