CA2002823A1 - Dishwasher - Google Patents
DishwasherInfo
- Publication number
- CA2002823A1 CA2002823A1 CA 2002823 CA2002823A CA2002823A1 CA 2002823 A1 CA2002823 A1 CA 2002823A1 CA 2002823 CA2002823 CA 2002823 CA 2002823 A CA2002823 A CA 2002823A CA 2002823 A1 CA2002823 A1 CA 2002823A1
- Authority
- CA
- Canada
- Prior art keywords
- water
- tub
- pump
- dishwasher
- cut
- 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
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
- A47L15/4217—Fittings for water supply, e.g. valves or plumbing means to connect to cold or warm water lines, aquastops
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
- A47L15/4225—Arrangements or adaption of recirculation or discharge pumps
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
- A47L15/4219—Water recirculation
- A47L15/4221—Arrangements for redirection of washing water, e.g. water diverters to selectively supply the spray arms
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
- A47L2401/20—Time, e.g. elapsed operating time
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/01—Water supply, e.g. opening or closure of the water inlet valve
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/03—Water recirculation, e.g. control of distributing valves for redirection of water flow
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/05—Drain or recirculation pump, e.g. regulation of the pump rotational speed or flow direction
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/07—Consumable products, e.g. detergent, rinse aids or salt
Abstract
ABSTRACT
A dishwasher (10) comprises a tuh (11), containing the dishes to be washed supported on racks, which is provided on the lnside with a plurality of water spray nozzles (12) and connected on the bottom to an outlet (29) which can be opened by means of an electrically-controlled switch (18).
A dispenser (20) is also provided for dispensing detergent in pre-established quantities in communication with the inside of the tub (11).
Said nozzles (12) are connected to the delivery side of a pump (13) whose suction inlet is connected to electrically-controlled changeover and cut-off devices (14) connecting said inlet alternately to a water pipe (15) drawing water from the bottom of said tub and to a source. of water in the form of an electric water heater (17).
The pump (13), the changeover and cut-off devices (14), the dispenser (20) and the electrically-controlled switch (18) are connected to a timer (21) and are actuated sequentially according to a previously programmed cycle.
A dishwasher (10) comprises a tuh (11), containing the dishes to be washed supported on racks, which is provided on the lnside with a plurality of water spray nozzles (12) and connected on the bottom to an outlet (29) which can be opened by means of an electrically-controlled switch (18).
A dispenser (20) is also provided for dispensing detergent in pre-established quantities in communication with the inside of the tub (11).
Said nozzles (12) are connected to the delivery side of a pump (13) whose suction inlet is connected to electrically-controlled changeover and cut-off devices (14) connecting said inlet alternately to a water pipe (15) drawing water from the bottom of said tub and to a source. of water in the form of an electric water heater (17).
The pump (13), the changeover and cut-off devices (14), the dispenser (20) and the electrically-controlled switch (18) are connected to a timer (21) and are actuated sequentially according to a previously programmed cycle.
Description
)2~3Z3 IMPROVE~ DISHWASHER
This invention refers to an improved dishwasher.
The.re are known dishwashers which economi~e on water by utilizing recycled water for the wash with detergent. In a second step, clean water is then introduced into the tub 5 to carry out the rinsing. This rinsing water is finally expelled and the ne~t washin~ cycla fol a new load of dishes is started hy intrGducing more clean water into the tub of the dishwasher. This way of proceeding ensures a certain economy in the use of water; especiallv when 10 compared to the water consumption in machines operating with cGntinUGus discharge cycles. The consumption is, however, still cGnsidarabll-J high, especially for machines desisned for intensive use such as those used in bars and restaurants.
15 ,~oreo-~er, for reasons of economy in construction and cverall dimensions, the rinsing cycle is usually carried out by introducing water from the main without using pump, but simply exploiting the natural pressure OL the incoming water; this entails possible irregularities in 20 the rinsing cycle due to the inconstancy of the pressure in the supply network.
The scope of this invention is to obviate the ar.ove mentioned problems by providing a dishwa her which is capable of further reducing the consump~iGn of water and 25 which has regular cycles regardless of the pressure in the water supply networ~.
The aforesaid scope is achieved by providing a dishwasher of the type comprising a tub, containing the dishes to ~e washed supported on racks, which is provided on the inside 30 with a plurality of water spray no~.les and connected on the bottom to an outlet which can be opened by means of an electrically-controlled switch, and is also provided with a dispenser for dispen.sing detergent in pre-esta~lished ~0~2~323 quantities in communication with the inside of the tub, characteri~ed by the fact that said nozzles are connected to the delivery side of a pump whose suction inlet is connected to electrically-controlled changeover and 5cut-off device~ connecting said inlet ~lternately to a water pipe drawing water from the bottom of said tub and to a source of water.
The innovatory principles OI this invention and its advantages with respect to the known technique will ke lo more clearly evident from the following description of possible embodiment applying st]ch principles which is given kv w.~v of example, with reference to the accompanying drawings in which:
- figure 1 shows a schematic view of a dishwasher made 15accordi~g to the innovatory principlas claimed herein;
- fisure ~ shows a schematic ph~ntom view OI a valve unit, which can ~e used in the dishwasher shGwn in figure 1.
With reference tQ the figures, a dishwasher 10 comprises a tub 11 internally provided with one or more rotating spray 20~rms 12.
Said spray arms 12 are connected to the delivery side of a pump 13, the suction inlet of which is connected to the outle~ 23 of a changeover and cut-off unit 14 having a first solenoid valve controlled inlet 15 in communication 25with tho ~ottom of the tu~ 11 and a second solenoid val-.-e controlled inlet 1~ in communication with the outlet of a storase tank in the form of an electric water heater 1~
the inlet of which is connected ~v means of a pipe 28 to a water supply network (not ,,hown).
30Also connected to the bottom of the tu~ 11 is a solenoid valve controlled discharge outlet 1~ leading off into a waste pipe 1~ connected to a drainage system of the known type and therefore not shown.
An electrically controlled di~pens3r ~0 (for example, 35controlled ~v a solenoid valve or a small pump) cont.ainins ~OO~Z3 detergent is disposed so that each time it is actuated it introduces a pre-established quantity of detergent into the tub 11.
The solenoid valve controlled discharge outlet 1~ ~nd the 5 first solenoid valve controlled inlet 15 of the unit 14 are protected against the entry Of foreign substances hy filtering means 2~, 30 respeGtively (for example, screens made of metal or other material).
Lastly, a tlmer 21 (for exampla, electromechanically-ope-lo rated) ensures that t.he washing cycles in t.he dishwasher are carried out correctly.
The dishwasher obviously comprises other parts (such as, for e~.ample, removable racks for the dishes, thermostats, level gauges, drying means, etc.) which, since they are of 15 known technique and consequently e~sily imaginable ~y anyone e~pert in the field, are neither shown nor further descri~ed herein.
Although the changeover and cut-off unit 14 may be made bv means of a -.uitab,lz combination of solenoid valves 20 obtained by ~:eans of the known technique (as is easilv imaginable by ~nyone expert in the field on the basis of the following dascriptions) of the type which, when actuated, opens whenever the pressure in the system substantially drops to zeror it was found to be 25 ad.vantageous to u e an integrated device as more cieearly illustrated in the schematic phantom view shown in rigure 2.
As can he seen in s~id figure, the unit 14 comprises an airtight housing 22 containing the connectors for the 30 inlets 15, 16 and the outlet 23 mentioned previously.
Disposed inside the housing 22, in correspondence with the two inlets 15 and 1~, are normally closed diaphragm valves 24 and 25 respectively, ~hich are made to open by means of solenoids 26 and 27 respectively.
35 A valve unit a~ desGribêd above thus enables t.he aperture 32~3Z3 of the inlets when the pressure substantially drops to ~ero and is extremely limited in dimensions.
The dishwasher described ahove operates in the following way.
5 After the dishes have been placed in the racks appropriately disposed inside the tul- 11 and after tha timer 21 has been set the latter starts the washing cvcle hy opening the inlet 1~. of th6 device 14 and actuating the pump 13 so as ~o convev not water from the water heater 17 lo to the rotary spray arms 12 which, due to the forcQ of the water, start to rotate and -.pray water inside the tub.
After a pre-established quant~ty of wate.r has been sprayed, the control device 21 closes the inlet lfi and open.s the inlet 15 so that the washing cycle continues 15 with closed-cycle circulation of the water taken from the bottom of the tub and re.-expelled by the rotarv spray noz~les 12.
The dispenser 20 is simultaneously made to release a quantity of detergent into the tub.
20 The washing continues for a pre-establi-hed period of time, until the beginning of the. discharge phase.
As soon as this phase begins the device 14 returns to the rest position, the pump 13 stops operating and the valve 18 opens fo discharge the washing water, thereby putting 25 the bottom of the tuk. in c.ommunication with the drainage svstem until the washing water has been completely drained out.
When the valve 1~ re-closes, t.he control device 21 re-opens the inlet 1~ and rastarts up t.he pump 13 so as to 30 send clean water into thç tub through the spray no~zles 12. This c.lean water carries out the phase of rinsing the detergent from the dishes and then remains on the bottom of the tub.
The quantity of clean water used by the dishwasher during 35 the rinsing phase is the same as that which it uses for `i92~23 the washing phase with detergent.
Thus, at the start of the next washing cycle with a new load of dishes, the timer 21 does not take water from the water heater but actuates the detergent dispenser and 5 starts up the cycle for recirculating t.-e water directly through the pump 13 and the inlet 15 of tha deviGe 14.
On completion of the new washing cyGle, the discharge and rinsing phase.s are carried GUt in tha same wav as described a~ove, and so Gn, always using the rinsing water o for the subse~uent wa~hing phase, with an Oi~ViOtls economy in the consumption of water, which i._ therebv reduced to half.
Moreover, by using the rinsing water (containing, therefore, a certain amou.nt of residual detergent) it is 15 possible to use le.c.~ detergent, since it is only necessarv to integrate that part of it expelled with the water discharged during the previous cycle.
In addition to the advantages of saving a considera~le amount of water and a certain amount of detergent, there 20 is the added advantage t.hat the washing phase wit.h detergent and the rinsing phase are both carried out by means of a pump and, therefore, with constant pressure, regardless of the pressure of the water supply networ~ and of the de.livery of the latter, due to t.he presence of the 2s water heater which acts as a pressure tank between the network and the tub.
The use of the changeover and cut-off unit described in figure 2, in place of combinations of valves of known technique, offers the further advantage of being able to 30 limit the dimensions of the unit 14 .-.o as to obtain, together with the presence of onlv one pump for circulation of the washing and rinsing water, a machine of very limited dimensions in relation to its capacity of dishes.
35 The water heater can ~,e advantageou~ly arrani,-,.d with one 2~323 non-insulated wall in contact with the bottom of the tub, so as to also keep the water on the bottom of the tub warm by conduction.
The foregoing description of a dishwasher and of a washing 5 cycle related thereto has obviously ~een given ~y way of example in order to illustrate the innovatory principles claimed herein and shollld not therefore be conc.idered as a limitation t.hereto~
For example, instead of being introduced directly into the lo tub, the detergent can be introdllGed at any point whatsoever of the flow of water entering the tub, in particular in the device 14. Moreover, the drainage system downstream to the valve 18 can, for example, comprise a pump in order to drain the water from the tub more easily.
15 Lastly, asparsion of the water inside the .u~ can be achieved according to any other known technique whatsoever and not necessarily by means of rotating no~le.c.
This invention refers to an improved dishwasher.
The.re are known dishwashers which economi~e on water by utilizing recycled water for the wash with detergent. In a second step, clean water is then introduced into the tub 5 to carry out the rinsing. This rinsing water is finally expelled and the ne~t washin~ cycla fol a new load of dishes is started hy intrGducing more clean water into the tub of the dishwasher. This way of proceeding ensures a certain economy in the use of water; especiallv when 10 compared to the water consumption in machines operating with cGntinUGus discharge cycles. The consumption is, however, still cGnsidarabll-J high, especially for machines desisned for intensive use such as those used in bars and restaurants.
15 ,~oreo-~er, for reasons of economy in construction and cverall dimensions, the rinsing cycle is usually carried out by introducing water from the main without using pump, but simply exploiting the natural pressure OL the incoming water; this entails possible irregularities in 20 the rinsing cycle due to the inconstancy of the pressure in the supply network.
The scope of this invention is to obviate the ar.ove mentioned problems by providing a dishwa her which is capable of further reducing the consump~iGn of water and 25 which has regular cycles regardless of the pressure in the water supply networ~.
The aforesaid scope is achieved by providing a dishwasher of the type comprising a tub, containing the dishes to ~e washed supported on racks, which is provided on the inside 30 with a plurality of water spray no~.les and connected on the bottom to an outlet which can be opened by means of an electrically-controlled switch, and is also provided with a dispenser for dispen.sing detergent in pre-esta~lished ~0~2~323 quantities in communication with the inside of the tub, characteri~ed by the fact that said nozzles are connected to the delivery side of a pump whose suction inlet is connected to electrically-controlled changeover and 5cut-off device~ connecting said inlet ~lternately to a water pipe drawing water from the bottom of said tub and to a source of water.
The innovatory principles OI this invention and its advantages with respect to the known technique will ke lo more clearly evident from the following description of possible embodiment applying st]ch principles which is given kv w.~v of example, with reference to the accompanying drawings in which:
- figure 1 shows a schematic view of a dishwasher made 15accordi~g to the innovatory principlas claimed herein;
- fisure ~ shows a schematic ph~ntom view OI a valve unit, which can ~e used in the dishwasher shGwn in figure 1.
With reference tQ the figures, a dishwasher 10 comprises a tub 11 internally provided with one or more rotating spray 20~rms 12.
Said spray arms 12 are connected to the delivery side of a pump 13, the suction inlet of which is connected to the outle~ 23 of a changeover and cut-off unit 14 having a first solenoid valve controlled inlet 15 in communication 25with tho ~ottom of the tu~ 11 and a second solenoid val-.-e controlled inlet 1~ in communication with the outlet of a storase tank in the form of an electric water heater 1~
the inlet of which is connected ~v means of a pipe 28 to a water supply network (not ,,hown).
30Also connected to the bottom of the tu~ 11 is a solenoid valve controlled discharge outlet 1~ leading off into a waste pipe 1~ connected to a drainage system of the known type and therefore not shown.
An electrically controlled di~pens3r ~0 (for example, 35controlled ~v a solenoid valve or a small pump) cont.ainins ~OO~Z3 detergent is disposed so that each time it is actuated it introduces a pre-established quantity of detergent into the tub 11.
The solenoid valve controlled discharge outlet 1~ ~nd the 5 first solenoid valve controlled inlet 15 of the unit 14 are protected against the entry Of foreign substances hy filtering means 2~, 30 respeGtively (for example, screens made of metal or other material).
Lastly, a tlmer 21 (for exampla, electromechanically-ope-lo rated) ensures that t.he washing cycles in t.he dishwasher are carried out correctly.
The dishwasher obviously comprises other parts (such as, for e~.ample, removable racks for the dishes, thermostats, level gauges, drying means, etc.) which, since they are of 15 known technique and consequently e~sily imaginable ~y anyone e~pert in the field, are neither shown nor further descri~ed herein.
Although the changeover and cut-off unit 14 may be made bv means of a -.uitab,lz combination of solenoid valves 20 obtained by ~:eans of the known technique (as is easilv imaginable by ~nyone expert in the field on the basis of the following dascriptions) of the type which, when actuated, opens whenever the pressure in the system substantially drops to zeror it was found to be 25 ad.vantageous to u e an integrated device as more cieearly illustrated in the schematic phantom view shown in rigure 2.
As can he seen in s~id figure, the unit 14 comprises an airtight housing 22 containing the connectors for the 30 inlets 15, 16 and the outlet 23 mentioned previously.
Disposed inside the housing 22, in correspondence with the two inlets 15 and 1~, are normally closed diaphragm valves 24 and 25 respectively, ~hich are made to open by means of solenoids 26 and 27 respectively.
35 A valve unit a~ desGribêd above thus enables t.he aperture 32~3Z3 of the inlets when the pressure substantially drops to ~ero and is extremely limited in dimensions.
The dishwasher described ahove operates in the following way.
5 After the dishes have been placed in the racks appropriately disposed inside the tul- 11 and after tha timer 21 has been set the latter starts the washing cvcle hy opening the inlet 1~. of th6 device 14 and actuating the pump 13 so as ~o convev not water from the water heater 17 lo to the rotary spray arms 12 which, due to the forcQ of the water, start to rotate and -.pray water inside the tub.
After a pre-established quant~ty of wate.r has been sprayed, the control device 21 closes the inlet lfi and open.s the inlet 15 so that the washing cycle continues 15 with closed-cycle circulation of the water taken from the bottom of the tub and re.-expelled by the rotarv spray noz~les 12.
The dispenser 20 is simultaneously made to release a quantity of detergent into the tub.
20 The washing continues for a pre-establi-hed period of time, until the beginning of the. discharge phase.
As soon as this phase begins the device 14 returns to the rest position, the pump 13 stops operating and the valve 18 opens fo discharge the washing water, thereby putting 25 the bottom of the tuk. in c.ommunication with the drainage svstem until the washing water has been completely drained out.
When the valve 1~ re-closes, t.he control device 21 re-opens the inlet 1~ and rastarts up t.he pump 13 so as to 30 send clean water into thç tub through the spray no~zles 12. This c.lean water carries out the phase of rinsing the detergent from the dishes and then remains on the bottom of the tub.
The quantity of clean water used by the dishwasher during 35 the rinsing phase is the same as that which it uses for `i92~23 the washing phase with detergent.
Thus, at the start of the next washing cycle with a new load of dishes, the timer 21 does not take water from the water heater but actuates the detergent dispenser and 5 starts up the cycle for recirculating t.-e water directly through the pump 13 and the inlet 15 of tha deviGe 14.
On completion of the new washing cyGle, the discharge and rinsing phase.s are carried GUt in tha same wav as described a~ove, and so Gn, always using the rinsing water o for the subse~uent wa~hing phase, with an Oi~ViOtls economy in the consumption of water, which i._ therebv reduced to half.
Moreover, by using the rinsing water (containing, therefore, a certain amou.nt of residual detergent) it is 15 possible to use le.c.~ detergent, since it is only necessarv to integrate that part of it expelled with the water discharged during the previous cycle.
In addition to the advantages of saving a considera~le amount of water and a certain amount of detergent, there 20 is the added advantage t.hat the washing phase wit.h detergent and the rinsing phase are both carried out by means of a pump and, therefore, with constant pressure, regardless of the pressure of the water supply networ~ and of the de.livery of the latter, due to t.he presence of the 2s water heater which acts as a pressure tank between the network and the tub.
The use of the changeover and cut-off unit described in figure 2, in place of combinations of valves of known technique, offers the further advantage of being able to 30 limit the dimensions of the unit 14 .-.o as to obtain, together with the presence of onlv one pump for circulation of the washing and rinsing water, a machine of very limited dimensions in relation to its capacity of dishes.
35 The water heater can ~,e advantageou~ly arrani,-,.d with one 2~323 non-insulated wall in contact with the bottom of the tub, so as to also keep the water on the bottom of the tub warm by conduction.
The foregoing description of a dishwasher and of a washing 5 cycle related thereto has obviously ~een given ~y way of example in order to illustrate the innovatory principles claimed herein and shollld not therefore be conc.idered as a limitation t.hereto~
For example, instead of being introduced directly into the lo tub, the detergent can be introdllGed at any point whatsoever of the flow of water entering the tub, in particular in the device 14. Moreover, the drainage system downstream to the valve 18 can, for example, comprise a pump in order to drain the water from the tub more easily.
15 Lastly, asparsion of the water inside the .u~ can be achieved according to any other known technique whatsoever and not necessarily by means of rotating no~le.c.
Claims (7)
1. Dishwasher of the type comprising a tub, containing the dishes to he washed supported on racks, which is provided on the inside with a plurality of water spray nozzles and connected on the bottom to an outlet which can be opened by means of an electrically-controlled switch, and is also provided with a dispenser for dispensing detergent in pre-established quantities in communication with the inside of the tub, characterized by the fact that said nozzles are connected to the delivery side of a pump whose suction inlet is connected to electrically-controlled changeover and cut-off devices connecting said inlet alternately to a water pipe drawing water from the bottom of said tub and to a source of water.
2. Dishwasher as claimed in Claim 1, characterized by the fact that said source comprises a storage tank in the form of an electric water heater.
3. Dishwasher as claimed in Claim 1, characterized by the fact that said outlet, said dispenser, said pump and said changeover and cut-off devices are connected to a timer device actuating in sequence, in a washing cycle: said pump to feed the nozzles and pre-arrangement of the changeover and cut-off devices for connection of the pump inlet to the water pipe on the bottom of the tub with simultaneous emission of a pre-established quantity of detergent in the flow of circulating water, in order to obtain a washing phase with detergent for a pre-set length of time with a closed-cycle circulation of water inside the tub; said electrically-controlled outlet, until all the water has been drained from the inside of the tub;
said pump to feed the nozzles and pre-arrangement of the changeover and cut-off devices for connection of the pump inlet to the source of water for emission of a pre-established quantity of water from said nozzles for a rinsing phase with the outlet closed, so as to provide a subsequent supply of water on the bottom of the tub for the next new washing cycle.
said pump to feed the nozzles and pre-arrangement of the changeover and cut-off devices for connection of the pump inlet to the source of water for emission of a pre-established quantity of water from said nozzles for a rinsing phase with the outlet closed, so as to provide a subsequent supply of water on the bottom of the tub for the next new washing cycle.
4. Dishwasher as claimed in Claim 3, characterized by the fact that said timer can be actuated to enable the pump and the changeover and cut-off devices to withdraw an established quantity of water from said source. to be sprayed from the nozzles, being the start-up of the washing cycle, so as to provide a subsequent supply of water on the bottom of the tub for the next washing cycle.
5. Dishwasher as claimed in claim 1, characterized by the fact that said changover and cut-off devices are made in the form of a watertight housing containing two inlet connectors for said connection to the source of water and to the pipe at the bottom of the tub, and an outlet connector for said connection to the inlet of the pump, diaphragm type, cut-off valves, which are normally closed and made to open by means of solenoids connected to said timer, being disposed in correspondence with the two inlets.
6. Dishwasher as claimed in Claim 1, characterized by the fact that the nozzles are supported by arms which are made to rotate by the action of the water expelled therefrom.
7. Dishwasher as claimed in claim 1, characterized by the fact that the water outlet and inlet on the bottom of the tub are protected by filter means against the entry of foreign substances.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT22181B/88 | 1988-11-22 | ||
| IT2218188U IT215240Z2 (en) | 1988-11-22 | 1988-11-22 | DISHWASHER MACHINE PERFECTED. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2002823A1 true CA2002823A1 (en) | 1990-05-22 |
Family
ID=11192697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2002823 Abandoned CA2002823A1 (en) | 1988-11-22 | 1989-11-14 | Dishwasher |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0370552A1 (en) |
| CA (1) | CA2002823A1 (en) |
| IT (1) | IT215240Z2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7754025B1 (en) | 2000-06-08 | 2010-07-13 | Beverage Works, Inc. | Dishwasher having a door supply housing which holds dish washing supply for multiple wash cycles |
| US8190290B2 (en) | 2000-06-08 | 2012-05-29 | Beverage Works, Inc. | Appliance with dispenser |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2271503B (en) * | 1992-10-16 | 1996-03-20 | Hoonved Spa | Washing machine |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3083717A (en) * | 1960-04-08 | 1963-04-02 | James H Bear | Dish washing machine |
| FR1384930A (en) * | 1963-12-18 | 1965-01-08 | Kitchen Machines Holding Ag | Dishwasher |
| US4641671A (en) * | 1984-02-20 | 1987-02-10 | Daikin Industries Ltd. | Automatic dishwasher |
-
1988
- 1988-11-22 IT IT2218188U patent/IT215240Z2/en active
-
1989
- 1989-11-09 EP EP89202844A patent/EP0370552A1/en not_active Withdrawn
- 1989-11-14 CA CA 2002823 patent/CA2002823A1/en not_active Abandoned
Cited By (12)
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|---|---|---|---|---|
| US7754025B1 (en) | 2000-06-08 | 2010-07-13 | Beverage Works, Inc. | Dishwasher having a door supply housing which holds dish washing supply for multiple wash cycles |
| US8103378B2 (en) | 2000-06-08 | 2012-01-24 | Beverage Works, Inc. | Appliance having a user interface panel and a beverage dispenser |
| US8190290B2 (en) | 2000-06-08 | 2012-05-29 | Beverage Works, Inc. | Appliance with dispenser |
| US8290615B2 (en) | 2000-06-08 | 2012-10-16 | Beverage Works, Inc. | Appliance with dispenser |
| US8290616B2 (en) | 2000-06-08 | 2012-10-16 | Beverage Works, Inc. | Appliance having a user interface panel and a beverage dispenser |
| US8548624B2 (en) | 2000-06-08 | 2013-10-01 | Beverage Works, Inc. | Appliance having a user interface panel and a beverage dispenser |
| US8565917B2 (en) | 2000-06-08 | 2013-10-22 | Beverage Works, Inc. | Appliance with dispenser |
| US8606395B2 (en) | 2000-06-08 | 2013-12-10 | Beverage Works, Inc. | Appliance having a user interface panel and a beverage dispenser |
| US9090446B2 (en) | 2000-06-08 | 2015-07-28 | Beverage Works, Inc. | Appliance with dispenser |
| US9090447B2 (en) | 2000-06-08 | 2015-07-28 | Beverage Works, Inc. | Appliance having a user interface panel and a beverage dispenser |
| US9090448B2 (en) | 2000-06-08 | 2015-07-28 | Beverage Works, Inc. | Appliance having a user interface panel and a beverage dispenser |
| US9090449B2 (en) | 2000-06-08 | 2015-07-28 | Beverage Works, Inc. | Appliance having a user interface panel and a beverage dispenser |
Also Published As
| Publication number | Publication date |
|---|---|
| IT215240Z2 (en) | 1990-09-11 |
| IT8822181V0 (en) | 1988-11-22 |
| EP0370552A1 (en) | 1990-05-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |