EP4574003A1 - Wärmepumpengeschirrspülmaschine und steuerungsverfahren dafür - Google Patents

Wärmepumpengeschirrspülmaschine und steuerungsverfahren dafür Download PDF

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Publication number
EP4574003A1
EP4574003A1 EP24201955.2A EP24201955A EP4574003A1 EP 4574003 A1 EP4574003 A1 EP 4574003A1 EP 24201955 A EP24201955 A EP 24201955A EP 4574003 A1 EP4574003 A1 EP 4574003A1
Authority
EP
European Patent Office
Prior art keywords
discharge
receptacle
pump
water
evaporator
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.)
Withdrawn
Application number
EP24201955.2A
Other languages
English (en)
French (fr)
Inventor
Erdogan Mert SEREN
Onur Poyraz
Cetin Aydintug
Ilhan BALIKCI
Ahmet Yasin KARABAY
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arcelik AS
Original Assignee
Arcelik AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arcelik AS filed Critical Arcelik AS
Publication of EP4574003A1 publication Critical patent/EP4574003A1/de
Withdrawn legal-status Critical Current

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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
    • A47L15/42—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
    • A47L15/4223—Devices for water discharge, e.g. devices to prevent siphoning, non-return valves
    • 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
    • A47L15/4285—Water-heater arrangements

Definitions

  • the present invention relates to a heat pump dishwasher wherein the water condensed in the evaporator is discharged, and to the control method thereof.
  • a heat pump dishwasher comprises a compressor, a condenser, a capillary tube and an evaporator, and forms a refrigerant fluid cycle.
  • the high temperature refrigerant fluid leaving the compressor is sent to the condenser and a hot surface is formed on the evaporator.
  • the water is passed over or through the condenser by means of a circulation pump to be heated, and then sent to the dishwasher by means of a multi-way valve.
  • the refrigerant fluid is passed through the capillary tube such that the pressure and therefore temperature thereof are suddenly reduced before being sent to the evaporator.
  • the refrigerant fluid cycle by means of two fans disposed in front of the evaporator, the air in the casing volume where the heat pump is positioned is sucked and blown into the evaporator. Heat transfer occurs to the evaporator, which is the cold surface, from the environment where the same is disposed. Finally, the refrigerant fluid returns to the suction line of the compressor, and the refrigerant fluid cycle is completed.
  • the condensate is collected in the receptacle under the evaporator.
  • an additional pump is used to discharge the water collected in the receptacle.
  • the condensate is discharged by means of the additional pump operated at certain steps of the refrigerant fluid cycle.
  • the additional pump is operated at least twice in a cycle and noise which can be easily heard from outside is generated during the refrigerant fluid cycle.
  • the efficiency is decreased and the costs are increased. Furthermore, the water which condenses and accumulates in the receptacle under the evaporator if the additional pump is blocked overflows or activates the overflow safety device, causing the dishwasher to give a water leakage error.
  • German Patent Application No. DE102012105670 a dishwasher is disclosed, wherein the heat pump is used in the drying process.
  • a dishwasher wherein the water in the evaporator receptacle is discharged by means of a sensor measuring the amount of water in the evaporator receptacle, a circulation pump, and a valve connected to the latter.
  • the aim of the present invention is the realization of a heat pump dishwasher wherein the water condensed in the evaporator is discharged, and of the control method thereof.
  • the heat pump dishwasher realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises a discharge hose which is disposed between the condensation receptacle and the discharge pump, one end of which is connected to the condensation receptacle and the other end to the discharge pump, and which enables the water in the condensation receptacle to be sucked and discharged when the discharge pump is operated.
  • the washing water is collected in the washing water receptacle in the heat pump dishwasher.
  • the washing water is taken from the washing water receptacle by means of the circulation pump and passed over the condenser in the heat pump, and then, the washing water heated by means of the condenser is transferred to the tub.
  • the discharge pump When the discharge pump is operated, negative pressure occurs in the discharge hose, one end of which is connected to the condensation receptacle and the other end to the discharge pump, and the water in the condensation receptacle is sucked towards the discharge pump. The water reaching the discharge pump is discharged together with the water leaving the washing process.
  • the discharge hose is disposed between the condensation receptacle under the evaporator and the discharge pump, and is directly connected to the inlet of the discharge pump.
  • negative pressure occurs in the discharge hose, and the water collected in the condensation receptacle is sucked from the end of the discharge hose connected to the condensation receptacle to be delivered to the discharge pump and discharged together with the discharged water.
  • a preferably one-way valve disposed on the discharge hose provides that there is no backpressure in the discharge hose.
  • the discharge hose is connected to the discharge pump at an angle of 45°, 60° or 90°.
  • the water in the condensation receptacle is enabled to be discharged without the need for the use of an additional pump, valve or sensor.
  • the need for using components requiring control such as additional pump, valve and/or sensor is eliminated, saving costs.
  • the additional noise source in the current embodiment is eliminated, the perception of quality is increased.
  • the heat pump dishwasher (1) comprises a tub (2) wherein the dishes are placed; a washing water receptacle (3) which is disposed under the tub (2); a circulation pump (4) which is connected to the washing water receptacle (3) and which provides the transfer of the washing water to the tub (2); a discharge pump (5) which is connected to the washing water receptacle (3) and which provides the discharge of the dirt water; a heat pump (6) which is disposed under the tub (2) and which has at least one compressor (8), at least one evaporator (9), at least one condenser (7) and at least one capillary tube (10) which are connected to each other by means of a refrigerant fluid line through which the refrigerant fluid is circulated; a condensation receptacle (11) which is disposed under the evaporator (9) and wherein the water condensed in the evaporator (9) is collected; and a discharge hose (12) which is disposed between the condensation receptacle (11) and the discharge pump (5), one end of which is
  • the washing water is collected in the washing water receptacle (3) in the heat pump dishwasher (1).
  • the washing water is taken from the washing water receptacle (3) by means of the circulation pump (4) and passed over the condenser (7) in the heat pump (6), and then, the washing water heated by means of the condenser (7) is transferred to the tub (2).
  • the heat pump (6) operates as follows:
  • the compressor (8) pressurizes the refrigerant fluid and sends the same to the condenser (7).
  • the pressure and hence the temperature of the refrigerant fluid increase.
  • the condenser (7) is heated.
  • the water taken from the washing water receptacle (3) by means of the circulation pump (4) is passed over the condenser (7) and the washing water is heated.
  • the refrigerant fluid leaving the condenser (7) is directed to the capillary tube (10) and the pressure and hence the temperature of the refrigerant fluid are reduced.
  • the refrigerant fluid leaving the capillary tube (10) is sent to the evaporator (9). Since the evaporator (9) is air sourced, the air passing over the evaporator (9) is moved away from the dishwasher (1) and sent to the environment, and thus heat transfer is performed from the environment to the evaporator (9).
  • the refrigerant fluid leaving the evaporator (9) is sucked again by the compressor (8) and the refrigerant fluid cycle is completed. Since the temperature of the ambient air passing over the evaporator (9) is much higher than the surface temperature of the evaporator (9) and the surface temperature of the evaporator (9) is below the dew point temperature of the air, the air is dehumidified and condensed on the surface of the evaporator (9). The water droplets condensing on the surface of the evaporator (9) are collected in the condensation receptacle (11) disposed under the evaporator (9).
  • the discharge hose (12) is disposed between the condensation receptacle (11) under the evaporator (9) and the discharge pump (5), and is directly connected to the inlet of the discharge pump (5).
  • negative pressure occurs in the discharge hose (12)
  • the water collected in the condensation receptacle (11) is sucked from the end of the discharge hose (12) connected to the condensation receptacle (11) to be delivered to the discharge pump (5) and discharged together with the discharged water.
  • the dishwasher (1) comprises a valve (13) disposed on the discharge hose (12).
  • the valve (13) is a one-way valve.
  • the valve (13) enables the water sucked from the condensation receptacle (11) to flow towards the discharge pump (5) and prevents the water from returning to the condensation receptacle (11) through the discharge hose (12). Thus, any backpressure in the discharge hose (12) is prevented.
  • the dishwasher (1) comprises the discharge hose (12) which is connected to the discharge pump (5) at a 45° angle.
  • the discharge hose (12) is connected to the discharge pump (5) at a 60° angle.
  • the discharge hose (12) is connected to the discharge pump (5) at an angle of 90°.
  • the water in the condensation receptacle (11) is enabled to be discharged without the need for the use of an additional pump, valve or sensor.
  • the need for using components requiring control such as additional pump, valve and/or sensor is eliminated, saving costs.
  • the additional noise source in the current embodiment is eliminated, the perception of quality is increased.

Landscapes

  • Washing And Drying Of Tableware (AREA)
EP24201955.2A 2023-12-20 2024-09-23 Wärmepumpengeschirrspülmaschine und steuerungsverfahren dafür Withdrawn EP4574003A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR202317739 2023-12-20

Publications (1)

Publication Number Publication Date
EP4574003A1 true EP4574003A1 (de) 2025-06-25

Family

ID=92895514

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24201955.2A Withdrawn EP4574003A1 (de) 2023-12-20 2024-09-23 Wärmepumpengeschirrspülmaschine und steuerungsverfahren dafür

Country Status (1)

Country Link
EP (1) EP4574003A1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080091660A (ko) * 2007-04-09 2008-10-14 주식회사 대우일렉트로닉스 세탁건조기
DE102012105670A1 (de) 2012-06-28 2014-01-02 Miele & Cie. Kg Haushaltsgerät mit einer Trocknungseinrichtung wie Wäschetrockner, Waschtrockner oder Geschirrspülmaschine
EP2682036A2 (de) * 2012-07-03 2014-01-08 Miele & Cie. KG Geschirrspülmaschine und Verfahren zum Aufheizen von Spülflotte in einer Geschirrspülmaschine
WO2016004990A1 (en) 2014-07-09 2016-01-14 Electrolux Appliances Aktiebolag Method of operating a dishwasher and a dishwasher
EP3473155A1 (de) * 2017-10-18 2019-04-24 Miele & Cie. KG Geschirrspülmaschine
EP3173513B1 (de) * 2013-06-11 2020-05-13 Electrolux Appliances Aktiebolag Waschmaschine
EP3718461A1 (de) 2019-04-05 2020-10-07 Miele & Cie. KG Geschirrspülmaschine, insbesondere haushaltsgeschirrspülmaschine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080091660A (ko) * 2007-04-09 2008-10-14 주식회사 대우일렉트로닉스 세탁건조기
DE102012105670A1 (de) 2012-06-28 2014-01-02 Miele & Cie. Kg Haushaltsgerät mit einer Trocknungseinrichtung wie Wäschetrockner, Waschtrockner oder Geschirrspülmaschine
EP2682036A2 (de) * 2012-07-03 2014-01-08 Miele & Cie. KG Geschirrspülmaschine und Verfahren zum Aufheizen von Spülflotte in einer Geschirrspülmaschine
EP3173513B1 (de) * 2013-06-11 2020-05-13 Electrolux Appliances Aktiebolag Waschmaschine
WO2016004990A1 (en) 2014-07-09 2016-01-14 Electrolux Appliances Aktiebolag Method of operating a dishwasher and a dishwasher
EP3473155A1 (de) * 2017-10-18 2019-04-24 Miele & Cie. KG Geschirrspülmaschine
EP3718461A1 (de) 2019-04-05 2020-10-07 Miele & Cie. KG Geschirrspülmaschine, insbesondere haushaltsgeschirrspülmaschine

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