EP3073885B1 - Geschirrspülmaschine und verfahren zum sammeln von waschflüssigkeit in einem geschirrspüler - Google Patents
Geschirrspülmaschine und verfahren zum sammeln von waschflüssigkeit in einem geschirrspüler Download PDFInfo
- Publication number
- EP3073885B1 EP3073885B1 EP13799027.1A EP13799027A EP3073885B1 EP 3073885 B1 EP3073885 B1 EP 3073885B1 EP 13799027 A EP13799027 A EP 13799027A EP 3073885 B1 EP3073885 B1 EP 3073885B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- washing liquid
- flow
- storage tank
- washing
- flow rate
- 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.)
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- 238000005406 washing Methods 0.000 title claims description 293
- 239000007788 liquid Substances 0.000 title claims description 241
- 238000000034 method Methods 0.000 title claims description 13
- 239000007921 spray Substances 0.000 claims description 79
- 230000005484 gravity Effects 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Images
Classifications
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- 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
- A47L15/4291—Recovery arrangements, e.g. for the recovery of energy or water
-
- 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
-
- 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
- A47L2401/14—Water pressure or flow rate
-
- 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
- A47L2501/03—Water recirculation, e.g. control of distributing valves for redirection of water flow
Definitions
- Embodiments herein relate to a dishwasher. Embodiments herein further relate to a method for collecting washing liquid in a dishwasher.
- washing liquid storage tank arranged to store washing liquid for subsequent re-use can reduce the use of washing liquid and energy during a wash session while the quality of the washing process is unaffected, or even improved.
- a washing liquid storage tank can be arranged to store washing liquid for re-use in a later stage of a wash cycle or for re-use in a subsequent wash cycle. The use of a washing liquid storage tank is described in the document EP 2583614 A2 .
- a washing liquid storage tank and the arrangement needed for the purpose of filling and emptying such a tank may add a considerable amount of production cost to a dishwasher.
- the filling and emptying of such a tank require components as well as control functions.
- a dishwasher capable of collecting washing liquid and being simple and cost efficient to manufacture.
- An object of the present invention is to provide a dishwasher capable of collecting washing liquid, and where the dishwasher is simple and cost effective to manufacture.
- Embodiments herein aim to provide dishwasher eliminating or at least reducing the problems and/or drawbacks associated with prior art solutions.
- DE 102011087855 A1 discloses a dishwasher (11) with a treatment container (14) for receiving washing liquid and a reservoir (16) for storing wash liquid.
- a pump is connected with a suction side to the treatment container and the pressure side to the reservoir. The hydrostatic pressures are exerted on the pressure side and suction side by the wash liquid in the reservoir and the treatment container respectively. The delivery pressure of the pump is adjusted and set such that difference between hydrostatic pressures is equal upon reaching a desired wash liquid level.
- a dishwasher comprising; a washing chamber with a sump, a circulation circuit comprising said sump, a circulation pump with an inlet and a first outlet, arranged to pump washing liquid in said circulation circuit, a first spray arrangement arranged to spray washing liquid into the washing chamber, a flow control device arranged to selectively control washing liquid flow to said first spray arrangement, a washing liquid storage tank, a first conduit, said washing liquid storage tank being connected to said circulation circuit via said first conduit, a flow control valve arranged in the first conduit, having at least an open state and a closed state, and an actuator arranged to control the flow control valve between the open state and the closed state, wherein said flow control device is arrangable to control liquid flow to said first spray arrangement such that washing liquid is arranged to be sprayed into said washing chamber with a first flow rate, in that said circulation pump is arrangable to pump washing liquid with a second flow rate, which second flow rate exceeds said first flow rate, and in that said valve is arrangable to be controlled to the
- the circulation pump being arrangable to pump washing liquid with a second flow rate which exceeds the first flow rate
- the valve being arrangable to be controlled to the open state by the actuator
- the excess washing liquid is arranged to flow from the circulation circuit to the washing liquid storage tank via said first conduit. Since the excess washing liquid is arranged to flow to the washing liquid storage tank, the washing liquid storage tank may be at least partly filled due to the difference in flow rate between the first flow rate and the second flow rate when the flow control device is arranged to control liquid flow to said first spray arrangement.
- a duration of a washing cycle may be shorter than if the collecting of washing liquid and the spraying into the washing chamber were performed at different periods during the washing cycle.
- a dishwasher which is capable of collecting washing liquid, and where the dishwasher is simple and cost effective to manufacture.
- said excess liquid is arranged to flow from said circulation circuit to said washing liquid storage tank with a third flow rate, and in that said third flow rate together with said first flow rate corresponds to said second flow rate.
- the third flow rate may be controlled as a function of the first flow rate and/or the second flow rate.
- the first, second and third flow rates may be at least partly controlled e.g. by a selected geometry of the circulation circuit, the first conduit and/or the washing liquid storage tank.
- the flow rates may also be at least partly controlled by e.g. a selected circulation pump speed, and/or a geometry and opening/closing time of the flow control valve. Due to this flexibility, the flow of excess liquid from the circulation circuit to the washing liquid storage tank may be easily controlled in any desired manner.
- said circulation circuit comprises a second spray arrangement arranged in said washing chamber, and said first spray arrangement is arranged above said second spray arrangement.
- said circulation circuit comprises a first spray arrangement arranged above a second spray arrangement
- the first arrangement may be arranged to spray washing liquid in an upper part of the washing chamber
- the second arrangement may be arranged to spray washing liquid in a lower part of the washing chamber.
- said flow control device is arrangable to control washing liquid flow to said first spray arrangement only.
- the flow control device is arranged to control washing liquid flow to the first spray arrangement only, the vertical level of a water column in the circulation circuit up to the first spray arrangement and/or a flow resistance related to the spraying of washing liquid through the first spray arrangement into said washing chamber may be used to control the excess washing liquid to flow up into the washing liquid storage tank.
- said first flow rate corresponds to a dish treatment flow rate, in which dish arranged in said washing chamber is treated by said washing liquid.
- said first flow rate corresponds to a dish treatment flow rate, in which dishes arranged in said washing chamber is treated in order to become clean by said washing liquid
- the excess washing liquid is arranged to flow from the circulation circuit to the washing liquid storage tank when the washing liquid is arranged to be sprayed into said washing chamber with a dish treatment flow rate via the first spray arrangement.
- the first flow rate may be selected such that the dishes are treated by some of the washing liquid from the circulation pump, while some of the washing liquid is arranged to flow up to the washing liquid storage tank.
- washing liquid may be collected in the washing liquid storage tank during a rinse cycle without an increased washing cycle time caused by the collection of washing liquid.
- the difference in flow rate between said first flow rate and said second flow rate causes a pressure in at least a part of the circulation circuit, where said pressure exceeds gravity-related-pressure, such that said excess washing liquid is arranged to be pushed up into said washing liquid storage tank via said first conduit due to said pressure when said circulation pump is arranged to pump washing liquid in said circulation circuit.
- the difference in flow rate between said first flow rate and said second flow rate causes a pressure in at least a part of the circulation circuit, causing excess washing liquid to be pushed up into said washing liquid storage tank due to said pressure.
- the pressure in the circulation system may be used to at least partly fill the washing liquid storage tank.
- said excess washing liquid is arranged to flow from said circulation circuit to said washing liquid storage tank via said first conduit up to a vertical level in said washing liquid storage tank which is arranged above a vertical level of said first spray arrangement in said dishwasher. Since said excess washing liquid is arranged to flow from said circulation circuit to said washing liquid storage tank via said first conduit up to a vertical level in said washing liquid storage tank which is arranged above a vertical level of said first spray arrangement in said dishwasher, a potential energy of the washing liquid may be large. Hereby the washing liquid collected in the washing liquid storage tank may flow from the tank to the first and/or second spray arrangement with large force e.g. in a later rinse procedure.
- Said circulation pump comprises a second outlet connected to said washing liquid storage tank via the first conduit, and in that said excess washing liquid is arranged to flow from said circulation pump to said washing liquid storage tank via said second outlet.
- a dishwasher is provided which is capable of collecting washing liquid, and which dishwasher is simple and cost efficient to manufacture. Also, due to the second outlet, a length of the first conduit may be reduced.
- washing liquid collected in the washing liquid storage tank during a first washing cycle is arranged to be used in a subsequent washing cycle.
- a dishwasher is provided where the use of clean water and energy can be reduced.
- Embodiments herein aim to provide a method for collecting and temporarily storing washing liquid in a dishwasher, eliminating or at least reducing the problems and/or drawbacks associated with prior art dishwashers.
- this is provided by a method for collecting washing liquid in a dishwasher
- the dishwasher comprises; a washing chamber with a sump, a circulation circuit comprising said sump, a circulation pump with an inlet and a first outlet, arranged to pump washing liquid in said circulation circuit, a first spray arrangement arranged to spray washing liquid into the washing chamber, a flow control device arranged to selectively control washing liquid flow to said first spray arrangement, a washing liquid storage tank, a first conduit, said washing liquid storage tank being connected to said circulation circuit via said first conduit, a flow control valve arranged in the first conduit, having at least an open state and a closed state, and an actuator arranged to control the flow control valve between the open state and the closed state.
- the method for collecting washing liquid in the dishwasher comprises; controlling liquid flow to said first spray arrangement such that washing liquid is arranged to be sprayed into said washing chamber with a first flow rate, using said flow control device, pumping washing liquid with a second flow rate, which second flow rate exceeds said first flow rate, using said circulation pump, and controlling said flow control valve to an open state such that excess washing liquid is arranged to flow from the circulation circuit to the washing liquid storage tank via said first conduit, using said actuator.
- washing liquid may be collected in the washing liquid storage tank in a cost efficient manner.
- the collected washing liquid may be used in a subsequent washing cycle.
- a dishwasher 1 is illustrated.
- the dishwasher 1 comprises a washing chamber 2 with a sump 3 and a circulation circuit 4.
- the circulation circuit 4 comprises the sump 3, a circulation pump 5 with an inlet 5a and a first outlet 5b.
- the circulation pump 5 is arrangable to pump washing liquid in the circulation circuit 4.
- the circulation circuit 4 also comprises a first spray arrangement 6a which is arranged to spray washing liquid into the washing chamber 2, and a flow control device 7 arrangable to selectively control washing liquid flow to the first spray arrangement 6a.
- the circulation circuit 4 further comprises a second spray arrangement 6b as shown in Fig. 1 . In the Fig. 1 embodiment, the first spray arrangement 6a is arranged above the second spray arrangement 6b.
- the first spray arrangement 6a may be arranged to distribute washing liquid to dish 15 arranged in an upper part and/or lower part of the washing chamber 2, and the second spray arrangement 6b may be arranged to mainly distribute washing liquid to dish 15 arranged in a lower part of the washing chamber 2.
- the one or more spray arrangements 6 may comprise spray arms provided with nozzles, and the spray arms may be arranged to rotate by a reaction force of washing liquid being sprayed out of the nozzles into the washing chamber 3.
- the circulation circuit 4 may comprise one or more conduits or tubes, arranged to allow the washing liquid to flow e.g. between the sump 3, the circulation pump 5, the flow control device 7 and the one or more spray arrangements 6.
- the circulation circuit 4 is further arranged to be connected to water mains and a drain, e.g. via connections (not shown) in the sump 3.
- the washing liquid may comprise water, a mixture of water, detergent and/or softener.
- the washing liquid is arranged to be collected in the sump 3.
- the sump 3 may be arranged in a lower part of the washing chamber 2.
- the circulation pump 5 is arranged to pump washing liquid from the sump 3 to the one or more spray arrangements 6 via the first outlet 5b of the circulation pump 5 and the flow control device 7.
- the flow control device 7 may be of any suitable type, as known in the art, such as a disc-type flow control device.
- the circulation pump 5 may be of radial flow type, such as a centrifugal pump, or axial flow type or half axial flow type.
- the circulation pump 5 is driven by an electric motor (not shown).
- the dishwasher 1 further comprises a washing liquid storage tank 8 arranged at a side of and/or above of the washing chamber 2 and a first conduit 9.
- the washing liquid storage tank 8 is connected to the circulation circuit 4 via the first conduit 9.
- the first conduit 9 may be connected to any suitable part or portion of the circulation circuit 4, and may be connected to any portion of the washing liquid storage tank 8.
- the first conduit 9 is connected to a conduit of the circulation circuit 4 e.g. via a T-coupling.
- the first conduit 9 is connected to the flow control device 7.
- the circulation pump 5 comprises a second outlet 5c coupled to the first conduit 9.
- the first conduit 9 is connected to a lower portion of the washing liquid storage tank 8.
- the first conduit 9 and/or conduits arranged in the circulation circuit 4 may comprise one or more flexible hoses.
- the washing liquid storage tank 8 may comprise a venting passage or a venting valve (not shown) in an upper region of the washing liquid storage tank 8 in order to admit passage of air while filling or emptying the washing liquid storage tank 8.
- a flow control valve 10 is arranged in the first conduit 9.
- the flow control valve 10 has at least an open state and a closed state. In the open state, washing liquid may flow in the conduit 9 between the circulation circuit 4 and the washing liquid storage tank 8. In the closed state, washing liquid is prevented from flowing between the washing liquid storage tank 8 and the circulation circuit 4. In the closed state, washing liquid collected in the washing liquid storage tank 8 may be retained in the washing liquid storage tank 8.
- the flow control valve 10 may be of any suitable type, as known in the art, such as a ball-type, globe-type or butterfly-type valve.
- An actuator 11 is connected to the flow control valve 10, and the actuator 11 is arranged to control the flow control valve 10 between the open state and the closed state.
- the actuator 11 may be e.g. a bi-metal actuator, a solenoid, an electric motor or an electrothermic actuator such as a wax motor.
- An electrothermic actuator may be relatively cost efficient, and may allow a flow area in the flow control valve 10 to be relatively large.
- the dishwasher 1 may further comprise a control unit, which control unit is arranged to control the actuator 11 and/or an electric motor which is driving the circulation pump 5.
- the flow control device 7 may be arranged to the control washing liquid flow to the first spray arrangement 6a such that washing liquid is arranged to be sprayed into said washing chamber 2.
- a speed and/or effect of the circulation pump 5 may affect the flow rate.
- the flow rate may also be affected by a geometry of conduits in the circulation circuit and/or a geometry of the spray arrangements 6 or parts thereof, such as spray arms and nozzles.
- Washing liquid in the circulation circuit 4 may be controlled to flow from the circulation circuit 4 to the washing liquid storage tank 8 during one or more periods of a washing cycle, such that the in the washing liquid storage tank 8 collected washing liquid may be used later. Washing liquid in the circulation circuit 4 may be controlled to flow from the circulation circuit 4 to the washing liquid storage tank 8 e.g. under two different time periods during a washing cycle, a first period and a second period. The first and second periods may be selected to occur e.g. during one or more rinse periods during the washing cycle.
- the circulation pump 5 may be arranged to pump washing liquid in the circulation circuit 4, and the flow control device 7 may be arranged to the control washing liquid flow to the first spray arrangement 6a.
- the actuator 11 may be arranged to control the flow control valve 10 to be in an open state.
- the circulation pump 5 may be arranged to pump washing liquid in the circulation circuit 4 with a selected flow rate.
- the flow control device 7 may control washing liquid flow only to the first spray arrangement 6a while the circulation pump 5 is running, washing liquid may be pumped from the sump 3 both towards the first spray arrangement 6a and the washing liquid storage tank 8.
- the flow control device 7 may thus be arranged to close a connection between the first circulation pump 5 and the lower spray arrangement 6b in embodiments comprising such a lower spray arrangement 6b.
- a flow resistance in the conduit arranged between the first outlet 5b of the circulation pump 5 and the spray arrangements 6a can be increased as compared to when running the circulation pump 5 with an open connection between the first outlet 5b of the circulation pump 5 and the lower spray arrangement 6b.
- Closing the connection between the first outlet 5b and the lower spray arrangement 6b may also serve to speed up the process of filling the washing liquid storage tank 8. As a result, filling of the washing liquid storage tank 8 with washing liquid can be performed with a reduced rotational speed of the circulation pump 9.
- washing liquid may be pumped up to a first vertical level 18 in both the washing liquid storage tank 8 and the circulation circuit 4.
- the first vertical level 18 may be an equilibrium vertical level which depends e.g. on the circulation pump speed and the dimensions and geometry of the circulation circuit 4, the washing liquid storage tank 8 and the first conduit 9.
- the first vertical level 18 may be arranged at substantially the same vertical level as the first spray arrangement 6a, or below the vertical level of the first spray arrangement 6a. When the equilibrium vertical level is reached, no flow at all, or only a small amount of flow, occurs in the circulation circuit 4.
- the first vertical level 18 may be substantially the same in both the circulation circuit 4 and the washing liquid storage tank 8.
- the washing liquid may reach the first vertical level 18 in e.g. a conduit of the circulation circuit 4 which is arranged between the flow control device 7 and the first spray arrangement 6a.
- the actuator 11 may then be arranged to close the flow control valve 10.
- the actuator 11 may be arranged to close the flow control valve 10 based on time, i.e. an amount of time after the opening of the flow control valve 10.
- the actuator 11 may be arranged to close the flow control valve 10 based on sensor data, e.g. relating to a detected pressure, weight and/or volume.
- washing liquid storage tank 8 When the flow control valve 10 is in the closed state again, the washing liquid storage tank 8 is partly filled with washing liquid. If the first period occurs under a rinse period during a washing cycle, the washing liquid collected in the washing liquid storage tank 8 is relatively clean and free from dirt and debris. According to an exemplifying embodiment, one or a few litres of washing liquid may be collected in the washing liquid storage tank 8 during this first period.
- An additional amount of washing liquid may be collected in the washing liquid storage tank 8 during a second period of the washing cycle.
- Such a second period may be selected to occur during a rinse period of the washing cycle, such as during a hot rinse period.
- the circulation pump 5 may be arranged to pump washing liquid in the circulation circuit 4, and the flow control device 7 may be arranged to control washing liquid flow to the first spray arrangement 6a only.
- the circulation pump 5 may be arranged to pump washing liquid in the circulation circuit 4 with a second flow rate 13.
- the second flow rate 13 may be higher than the flow rate selected during the first period and may be lower than a flow rate from the circulation pump 5 during other periods of the washing cycle.
- the actuator 11 may be arranged to control the flow control valve 10 to be in an open state.
- washing liquid may be arranged to be sprayed into the washing chamber 2 with a first flow rate 12 via the first spray arrangement 6a.
- the first sprayed flow rate 12 may depend e.g. on the flow rate from the circulation pump 5 and the geometry and/or dimension of the spray arrangement 6a, such as the number of spray nozzles and the size of the nozzles.
- a flow resistance of nozzles of the upper spray arrangement 6a may be used to be able to fill the washing liquid storage tank 8 with washing liquid to a level which may exceed the vertical level of the upper spray arrangement 6a.
- the second flow rate 13 exceeds the first flow rate 12. Since the second flow rate 13 from the circulation pump 5 exceeds the first flow rate 12 sprayed through the first spray arrangement 6a into the washing chamber 2, excess washing liquid is arranged to flow from the circulation circuit 4 to the washing liquid storage tank 8 via said first conduit 9. In other words, since only some of the washing liquid, which is pumped from the sump 3 via the circulation pump 5, may flow through the first spray arrangement 6a, the remaining water from the circulation pump 5 is instead pressed up into the washing liquid storage tank 8 via the first conduit 9 and the open flow control valve 10. Hereby the amount of washing liquid collected in the washing liquid storage tank 8 may reach a second vertical level 19, which second vertical level 19 is arranged above the first vertical level 18.
- the second vertical level 19 may be arranged above a vertical level of the spray arrangement 6a.
- the second vertical level 19 may be arranged at a substantial distance above the vertical level of the spray arrangement 6a, e.g. near an upper part of the washing liquid storage tank 8. When the second vertical level 19 is reached, a major part of, or the entire, washing liquid storage tank 8 may be filled.
- the actuator 11 may then be arranged to close the flow control valve 10.
- the actuator 11 may be arranged to close the flow control valve 10 based on time, i.e. an amount of time after the opening of the flow control valve.
- the actuator 11 may be arranged to close the flow control valve 10 based on sensor data, e.g. relating to a detected pressure, weight and/or volume.
- washing liquid may be arranged to flow up to the first vertical level 18 during the first period of a washing cycle, and then to the second vertical level 19 during the second period of a washing cycle.
- washing liquid is collected in the washing liquid storage tank 8 during the second period described above only.
- the second period may then occur e.g. during a rinse period of the washing cycle.
- the washing liquid collected in the washing liquid storage tank 8 during a first washing cycle may be arranged to be used in a subsequent washing cycle.
- the first 12 and second 13 flow rate may be substantially the same.
- washing liquid in the washing liquid storage tank 8 is arranged to be evacuated from the washing liquid storage tank 8 to the spray arrangement 6 and/or the sump 3 via the circulation pump 5 when the flow control valve 10 is in the open state.
- washing liquid in the washing liquid storage tank 8 is arranged to be evacuated from the washing liquid storage tank 8 by a force of gravity, and according to some embodiments the circulation pump 5 may be used.
- the washing liquid in the washing liquid storage tank 8 can hereby be re-used in an easy manner.
- the washing liquid in the washing liquid storage tank 8 can be re-used in a later stage of a wash cycle or re-used in a subsequent wash cycle. For example, relatively clean washing liquid collected during a washing cycle may be used e.g. for a pre-rinse of dish in a subsequent washing cycle.
- the dishwasher may comprise; a washing chamber with a sump, a circulation circuit comprising said sump, a circulation pump with an inlet and a first outlet, arranged to pump washing liquid in said circulation circuit, a first spray arrangement arranged to spray washing liquid into the washing chamber, a flow control device arranged to selectively control washing liquid flow to said first spray arrangement, a washing liquid storage tank, a first conduit, said washing liquid storage tank being connected to said circulation circuit via said first conduit, a flow control valve arranged in the first conduit, having at least an open state and a closed state, and an actuator arranged to control the flow control valve between the open state and the closed state
- the method 100 comprises;
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- Washing And Drying Of Tableware (AREA)
Claims (9)
- Geschirrspülmaschine (1), umfassend;- eine Spülkammer (2) mit einem Sumpf (3),- einen Umwälzkreislauf (4) umfassend den Sumpf (3), eine Umwälzpumpe (5) mit einem Einlass (5a) und einem ersten Auslass (5b), die angeordnet ist, Spülmittelflüssigkeit in den Umwälzkreislauf (4) zu pumpen, eine erste Sprühanordnung (6a), die angeordnet ist, Spülmittelflüssigkeit in die Spülkammer (2) zu sprühen, eine Strömungssteuerungsvorrichtung (7), die angeordnet ist, einen Spülmittelflüssigkeitsstrom zu der ersten Sprühanordnung (6a) gezielt zu steuern,- einen Spülmittelflüssigkeitsvorratsbehälter (8),- eine erste Leitung (9), wobei der Spülmittelflüssigkeitsvorratsbehälter (8) mit dem Umwälzkreislauf (4) über die erste Leitung (9) verbunden ist,- ein Strömungssteuerventil (10), das in der ersten Leitung (9) angeordnet ist, das mindestens einen geöffneten Zustand und einen geschlossenen Zustand aufweist, und- einen Aktuator (11), der angeordnet ist, das Strömungssteuerventil (10) zwischen dem geöffneten Zustand und dem geschlossenen Zustand zu steuern,wobei die Strömungssteuerungsvorrichtung (7) anordenbar ist, den Spülmittelflüssigkeitsstrom zu der ersten Sprühanordnung (6a) derart zu steuern, dass Spülmittelflüssigkeit angeordnet ist, in die Spülkammer (2) mit einer ersten Strömungsrate (12) gesprüht zu werden, die Umwälzpumpe (5) anordenbar ist, Spülmittelflüssigkeit mit einer zweiten Strömungsrate (13) zu pumpen, wobei die zweite Strömungsrate (13) die erste Strömungsrate (12) übersteigt, und das Strömungssteuerventil (10) anordenbar ist, durch den Aktuator (11) in den geöffneten Zustand derart gesteuert zu werden, dass überschüssige Spülmittelflüssigkeit angeordnet ist, aus dem Umwälzkreislauf (4) zu dem Spülmittelflüssigkeitsvorratsbehälter (8) über die erste Leitung (9) zu strömen,
dadurch gekennzeichnet, dass die Umwälzpumpe (5) einen zweiten Auslass (5c) umfasst, der mit dem Spülmittelflüssigkeitsvorratsbehälter (8) über die erste Leitung (9) verbunden ist, und dass die überschüssige Spülmittelflüssigkeit angeordnet ist, von der Umwälzpumpe (5) zu dem Spülmittelflüssigkeitsvorratsbehälter (8) über den zweiten Auslass (5c) zu strömen. - Geschirrspülmaschine (1) nach Anspruch 1, dadurch gekennzeichnet, dass die überschüssige Flüssigkeit angeordnet ist, von dem Umwälzkreislauf (4) zu dem Spülmittelflüssigkeitsvorratsbehälter (8) mit einer dritten Strömungsrate zu strömen, und dass die dritte Strömungsrate zusammen mit der ersten Strömungsrate (12) der zweiten Strömungsrate (13) entspricht.
- Geschirrspülmaschine (1) nach Anspruch 1, dadurch gekennzeichnet, dass der Umwälzkreislauf (4) eine zweite Sprühanordnung (6b) umfasst, die in der Spülkammer (2) angeordnet ist, und dass die erste Sprühanordnung (6a) über der zweiten Sprühanordnung (6b) angeordnet ist.
- Geschirrspülmaschine (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Strömungssteuerungsvorrichtung (7) anordenbar ist, einen Spülmittelflüssigkeitsstrom nur zu der ersten Sprühanordnung (6a) zu steuern.
- Geschirrspülmaschine (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die erste Strömungsrate (12) einer Geschirrbehandlungsströmungsrate entspricht, bei der in der Spülkammer (2) angeordnetes Geschirr (15) durch die Spülmittelflüssigkeit behandelt wird.
- Geschirrspülmaschine (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Differenz bei der Strömungsrate zwischen der ersten Strömungsrate (12) und der zweiten Strömungsrate (13) einen Druck in zumindest einem Teil des Umwälzkreislaufes (4) erzeugt, wobei der Druck einen durch Schwerkraft erzeugten Druck derart übersteigt, dass die überschüssige Spülmittelflüssigkeit angeordnet ist, nach oben in den Spülmittelvorratsbehälter (8) über die erste Leitung (9) aufgrund des Drucks gedrückt zu werden, wenn die Umwälzpumpe (5) angeordnet ist, Spülmittelflüssigkeit in den Umwälzkreislauf (4) zu pumpen.
- Geschirrspülmaschine (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die überschüssige Spülmittelflüssigkeit angeordnet ist, von dem Umwälzkreislauf (4) zu dem Spülmittelvorratsbehälter (8) über die erste Leitung (9) nach oben zu einer vertikalen Ebene in dem Spülmittelvorratsbehälter (8) zu strömen, die über einer vertikalen Ebene der ersten Sprühanordnung (6a) in der Geschirrspülmaschine (1) angeordnet ist.
- Geschirrspülmaschine (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in dem Spülmittelflüssigkeitsvorratsbehälter (8) gesammelte Spülmittelflüssigkeit während eines ersten Spülzyklus angeordnet ist, in einem nachfolgenden Spülzyklus verwendet zu werden.
- Verfahren (100) zum Sammeln von Spülmittelflüssigkeit in einer Geschirrspülmaschine (1), wobei die Geschirrspülmaschine (1) umfasst; eine Spülkammer (2) mit einem Sumpf (3), einen Umwälzkreislauf (4) umfassend den Sumpf (3), eine Umwälzpumpe (5) mit einem Einlass (5a) und einem ersten Auslass (5b), die angeordnet ist, Spülmittelflüssigkeit in den Umwälzkreislauf (4) zu pumpen, eine erste Sprühanordnung (6a), die angeordnet ist, Spülmittelflüssigkeit in die Spülkammer (2) zu sprühen, eine Strömungssteuerungsvorrichtung (7), die angeordnet ist, einen Spülmittelflüssigkeitsstrom zu der ersten Sprühanordnung (6a) gezielt zu steuern, einen Spülmittelflüssigkeitsvorratsbehälter (8), eine erste Leitung (9), wobei der Spülmittelflüssigkeitsvorratsbehälter (8) mit dem Umwälzkreislauf (4) über die erste Leitung (9) verbunden ist, ein Strömungssteuerventil (10), das in der ersten Leitung (9) angeordnet ist, das mindestens einen geöffneten Zustand und einen geschlossenen Zustand aufweist, und einen Aktuator (11), der angeordnet ist, das Strömungssteuerventil (10) zwischen dem geöffneten Zustand und dem geschlossenen Zustand zu steuern, wobei die Umwälzpumpe (5) einen zweiten Auslass (5c) umfasst, der mit dem Spülmittelflüssigkeitsvorratsbehälter (8) über die erste Leitung (9) verbunden ist, wobei das Verfahren (100) umfasst;- Steuern (101) eines Spülmittelflüssigkeitsstroms zu der ersten Sprühanordnung (6a) derart, dass Spülmittelflüssigkeit angeordnet ist, in die Spülkammer (2) mit einer ersten Strömungsrate gesprüht zu werden, unter Verwendung der Strömungssteuerungsvorrichtung (7),- Pumpen (102) von Spülmittelflüssigkeit mit einer zweiten Strömungsrate, wobei die zweite Strömungsrate die erste Strömungsrate übersteigt, unter Verwendung der Umwälzpumpe (5), und- Steuern (103) des Strömungssteuerventils (10) in einen geöffneten Zustand derart, dass überschüssige Spülmittelflüssigkeit angeordnet ist, von dem Umwälzkreislauf (4) zu dem Spülmittelvorratsbehälter (8) über die erste Leitung (9) zu strömen, unter Verwendung des Aktuators (11),
wobei die überschüssige Spülmittelflüssigkeit angeordnet ist, von der Umwälzpumpe (5) zu dem Spülmittelvorratsbehälter (8) über den zweiten Auslass (5c) zu strömen.
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ES2727308A1 (es) * | 2018-04-12 | 2019-10-15 | Bsh Electrodomesticos Espana Sa | Máquina lavavajillas doméstica con condensador variable en una disposición de bomba de calor. |
ES2727310A1 (es) * | 2018-04-12 | 2019-10-15 | Bsh Electrodomesticos Espana Sa | Máquina lavavajillas doméstica con un evaporador variable en su disposición de bomba de calor. |
CN113768442A (zh) * | 2021-08-22 | 2021-12-10 | 罗小聪 | 一种涡流水管驱动洗碗机 |
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