WO2019034373A1 - A dishwasher comprising a heat pump - Google Patents

A dishwasher comprising a heat pump Download PDF

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Publication number
WO2019034373A1
WO2019034373A1 PCT/EP2018/069767 EP2018069767W WO2019034373A1 WO 2019034373 A1 WO2019034373 A1 WO 2019034373A1 EP 2018069767 W EP2018069767 W EP 2018069767W WO 2019034373 A1 WO2019034373 A1 WO 2019034373A1
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
heat
dishwasher
compressor
air
Prior art date
Application number
PCT/EP2018/069767
Other languages
French (fr)
Inventor
Onur Poyraz
Erkan KUTUK
Emre SAGLICAN
Nurgul Gokdere
Cafer OZYURD
Original Assignee
Arcelik Anonim Sirketi
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 Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Publication of WO2019034373A1 publication Critical patent/WO2019034373A1/en

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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
    • A47L15/4285—Water-heater arrangements
    • 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
    • A47L2401/18—Air temperature
    • 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
    • A47L2501/11—Air heaters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency

Definitions

  • the present invention relates to a dishwasher comprising a heat pump.
  • heat pumps are used for decreasing the energy consumption and improve the drying performance.
  • the heat pump is composed of elements such as the compressor, the condenser, the throttle element and the evaporator.
  • the components of the heat pump are connected via a pipe line and the heat transfer is provided by means of the cycle fluid in the line.
  • the condenser is a tube bundle that has a hot surface and enables the washing water used in the washing process to be heated.
  • the evaporator has a cold surface and is positioned so as to contact the ambient air. The evaporator absorbs heat from the environment and provides heat transfer to the condenser.
  • a fan In a large number of heat pump systems, a fan is used, that enables the ambient air to be sucked and directed towards the evaporator.
  • the air directed towards the heat pump by means of the fan transfers its heat to the evaporator and sent back to the environment with its temperature decreased.
  • the air that has cooled down leaves from the rear side of the dishwasher.
  • the read side of the dishwashers is generally closed.
  • the cold air hits the rear surface of the dishwasher and causes the formation of condensation.
  • the condensed water droplets cause the surface whereon the condensation occurs to be damaged in the course of time.
  • a dishwasher comprising a duct that enables the air on the heat pump to be directed.
  • the aim of the present invention is the realization of a dishwasher wherein the condensation caused by the air that cools down while passing over the heat pump is prevented.
  • the dishwasher realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises at least one heat source that is disposed after the first heat exchanger in a first air flow direction provided by the fan, and a duct wherein the first heat exchanger is disposed and that enables the air cooled by the first heat exchanger to be directed onto the heat source.
  • the air is directed by means of the duct and heated by means of the heat source positioned after the first heat exchanger in the direction of the air flow.
  • the dishwasher comprises a compressor that is used as the heat source.
  • the compressor generating thermal energy is used while performing the refrigerant cycle without the need for using an external/additional heat source.
  • the air that cools down thanks to thermal contact with the first heat exchanger is directed towards the compressor by means of the duct, and the air is heated, decreasing the possibility of condensation.
  • the compressor is disposed in the duct in the dishwasher.
  • the air passing over the first heat exchanger is enabled to directly reach the compressor acting as the heat source without any loss.
  • the heat provided by the compressor is completely used and the air is almost completely heated, preventing condensation.
  • the compressor is disposed at the outlet of the duct in the dishwasher.
  • the need for producing the duct with large dimensions so as to receive the compressor is eliminated, and the volume wherein the available small components are placed is enabled to be used more efficiently.
  • the dishwasher comprises the heat source that is a resistance heater. By means of the heater, the air is heated before being discharged outside.
  • the dishwasher comprises a temperature sensor that is disposed after the heat source and a control unit that provides the controlling of the heat source according to the data received from the temperature sensor.
  • the temperature of the air passing over the first heat exchanger is not always the same. In this case, operating the heat source continuously at the same temperature and at the same setting causes energy loss.
  • the control unit measures the temperature of the air to be discharged outside by means of the temperature sensor, and enables the heat source to be operated with less energy if the air is hotter than it should be, in other words hotter than required, and enables the heat source to be operated with more energy if not.
  • the heat source is prevented from being operated unnecessarily when it is hot, providing energy savings.
  • the dishwasher comprises the compressor positioned before the first heat exchanger in the direction of the air flow, and the duct that enables the air sucked from the outer environment by means of the fan and heated by the compressor to be directed towards the first heat exchanger and enables the air passing over the first heat exchanger to be directed towards the heat source.
  • the temperature of the air passing over the first heat exchanger is enabled to be higher so as to allow the heat source to be operated with less energy, thus decreasing the possibility of condensation while the efficiency of the heat pump is increased by sending hot air onto the first heat exchanger.
  • the compressor is disposed at the inlet of the duct in the dishwasher. In this embodiment, it is aimed to use more efficiently the small volume wherein the components are placed as disclosed in the above embodiments.
  • the problem of condensation that is encountered especially in built-in dishwashers is eliminated by means of the heat source heating the cold air and the duct that enables the air to be directed and wherein the first heat exchanger is disposed.
  • Figure 1 - is the perspective view of the dishwasher.
  • Figure 2 - is the schematic view of the heat pump.
  • Figure 3 - is the schematic view of the duct and the heat source.
  • the dishwasher (1) comprises a body (2); a washing tub (3) that is disposed in the body (2) and wherein the washing process is performed; a heat pump (4) that is disposed in the body (2) and that has at least one first heat exchanger (5) for absorbing the ambient heat by forming a cold surface, a second heat exchanger (6) that enables the washing water to be heated by creating a hot surface using the heat absorbed from the first heat exchanger (5) and a compressor (7) that is in fluid communication with the first heat exchanger (5) and the second heat exchanger (6) and that performs the refrigerant cycle; and at least one fan (8) that enables the outer environment air to be delivered onto the first heat exchanger (5).
  • the ambient air is sucked and delivered to the first heat exchanger (5) by means of the fan (8).
  • thermal energy is drawn from the environment, and the thermal energy drawn is transferred to the second heat exchanger (6) so as to heat the water used for washing.
  • the heat drawn from the environment is transferred between the heat exchangers (5, 6) ( Figure 1, Figure 2).
  • the dishwasher (1) of the present invention comprises at least one heat source (9) that is disposed after the first heat exchanger (5) in a first air flow provided by the fan (8), and a duct (10) wherein the first heat exchanger (5) is disposed and that enables the air cooled by the first heat exchanger (5) to be directed onto the heat source (9).
  • the first heat exchanger (5) which is one of the components of the heat pump (4) is disposed on the duct (10).
  • the air passing over the first heat exchanger (5) is directed through the duct (10) and heated by the heat source (9).
  • the dishwasher (1) comprises the heat source (9) that is the compressor (7) performing the refrigerant cycle.
  • the heat generated by the compressor (7) is used. Consequently, the air that cools down while passing over the first heat exchanger (5) is heated by being passed over the compressor (7) and is prevented from causing condensation while being discharged.
  • the compressor (7) is prevented from drawing excessive current while in operation, and a safer dishwasher (1) is realized.
  • the dishwasher (1) comprises the compressor (7) that is disposed in the duct (10).
  • the heat dissipated by the compressor (7) while in operation is lower than the amount of heat dissipated by a resistance heater that is supplied with energy.
  • the compressor (7) By disposing the compressor (7) in the duct (10), the air that cools down by being passed over the first heat exchanger (5) is enabled to be completely directed towards the compressor (7) used as the heat source (9) without any loss, and thus, the air is enabled to be heated so as not to cause condensation on the surface the air hits thanks to the compressor (7) providing relatively small amount of heat.
  • the dishwasher (1) comprises the compressor (7) that is disposed at the outlet of the duct (10).
  • the compressor (7) by being disposed into the duct (10) that forms a closed volume, the compressor (7) is prevented from excessively heating up.
  • the compressor (7) generates heat while in operation; however, the compressor (7) must not heat up excessively for efficient operation.
  • the air passing over the first heat exchanger (5) is heated while preventing the compressor (7) from excessively heating up.
  • the dishwasher (1) comprises the heat source (9) that is a resistance heater.
  • the air that cools down by passing over the first heat exchanger (5) is heated by the heat source (9) that is a resistance heater.
  • the air can be heated up to high temperatures and the problem of condensation is eliminated.
  • the dishwasher (1) comprises a temperature sensor (11) that is positioned after the heat source (9) in the direction of the air flow, and a control unit (12) that adjusts the amount of heat provided by the heat source (9) according to the data received from the temperature sensor (11).
  • the control unit (12) measures the temperature of the air heated by the heat source (9) and provides that the air is hot enough not to always cause condensation and cold enough to prevent excessive energy consumption. For example, in case the ambient temperature is high, the air passing over the first heat exchanger (5) is relatively hotter and is not required to be heated too much to prevent condensation. In such cases the control unit (12) operates the heat source (9) at lower temperatures, thus providing energy savings.
  • the dishwasher (1) comprises the compressor (7) positioned before the first heat exchanger (5) in the direction of the air flow, and the duct (10) that enables the air sucked from the outer environment by means of the fan (8) and heated by the compressor (7) to be directed towards the first heat exchanger (5) and enables the air passing over the first heat exchanger (5) to be directed towards the heat source (9).
  • the air sucked from the outer environment is heated by means of the compressor (7) and delivered to the first heat exchanger (5), thus increasing the efficiency of the first heat exchanger (5).
  • the cold air obtained from over the first heat exchanger (5) is enabled to be relatively hotter and the possibility of condensation is decreased.
  • the dishwasher (1) comprises the compressor (7) that is disposed at the inlet of the duct (10). As disclosed in the above embodiments, the compressor (7) is prevented from excessively heating up by being placed into the duct (10).
  • the second heat exchanger (6) can be used as the heat source (9). This embodiment decreases the efficiency of the heat pump (4) for a certain amount; however, the condensation is prevented, thus providing user satisfaction.
  • the duct (10) of the present invention By directing the air by means of the duct (10) of the present invention, lossless thermal contact with the heat source (9) is provided and condensation is prevented with the heating of the air.
  • the cold air received from over the first heat exchanger (5) is heated and discharged. Since the temperature of the air discharged from the rear side of the dishwasher (1) is compatible with the ambient temperature, the kitchen environment is prevented from being damaged.

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  • Washing And Drying Of Tableware (AREA)

Abstract

The present invention relates to a dishwasher (1) comprising a body (2); a washing tub (3) that is disposed in the body (2) and wherein the washing process is performed; a heat pump (4) that is disposed in the body (2) and that has at least one first heat exchanger (5) for absorbing the ambient heat by forming a cold surface, a second heat exchanger (6) that enables the washing water to be heated by creating a hot surface using the heat absorbed from the first heat exchanger (5) and a compressor (7) that is in fluid communication with the first heat exchanger (5) and the second heat exchanger (6) and that performs the refrigerant cycle; and at least one fan (8) that enables the outer environment air to be delivered onto the first heat exchanger (5).

Description

A DISHWASHER COMPRISING A HEAT PUMP
The present invention relates to a dishwasher comprising a heat pump.
In dishwashers, heat pumps are used for decreasing the energy consumption and improve the drying performance. In heat pump dishwashers, the heat pump is composed of elements such as the compressor, the condenser, the throttle element and the evaporator. The components of the heat pump are connected via a pipe line and the heat transfer is provided by means of the cycle fluid in the line. The condenser is a tube bundle that has a hot surface and enables the washing water used in the washing process to be heated. The evaporator has a cold surface and is positioned so as to contact the ambient air. The evaporator absorbs heat from the environment and provides heat transfer to the condenser. In a large number of heat pump systems, a fan is used, that enables the ambient air to be sucked and directed towards the evaporator. The air directed towards the heat pump by means of the fan transfers its heat to the evaporator and sent back to the environment with its temperature decreased. The air that has cooled down leaves from the rear side of the dishwasher. The read side of the dishwashers is generally closed. The cold air hits the rear surface of the dishwasher and causes the formation of condensation. In particular in built-in products, the condensed water droplets cause the surface whereon the condensation occurs to be damaged in the course of time.
In the state of the art European Patent Application No. EP2682038, a dishwasher is disclosed, comprising a duct that enables the air on the heat pump to be directed.
The aim of the present invention is the realization of a dishwasher wherein the condensation caused by the air that cools down while passing over the heat pump is prevented.
The dishwasher realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises at least one heat source that is disposed after the first heat exchanger in a first air flow direction provided by the fan, and a duct wherein the first heat exchanger is disposed and that enables the air cooled by the first heat exchanger to be directed onto the heat source. In order to prevent the air that loses its heat and cools down by being passed over the first heat exchanger from causing condensation, the air is directed by means of the duct and heated by means of the heat source positioned after the first heat exchanger in the direction of the air flow.
In an embodiment of the present invention, the dishwasher comprises a compressor that is used as the heat source. By means of this embodiment, the compressor generating thermal energy is used while performing the refrigerant cycle without the need for using an external/additional heat source. Thus, the air that cools down thanks to thermal contact with the first heat exchanger is directed towards the compressor by means of the duct, and the air is heated, decreasing the possibility of condensation.
In another embodiment of the present invention, the compressor is disposed in the duct in the dishwasher. In this embodiment, the air passing over the first heat exchanger is enabled to directly reach the compressor acting as the heat source without any loss. Thus, the heat provided by the compressor is completely used and the air is almost completely heated, preventing condensation.
In another embodiment of the present invention, the compressor is disposed at the outlet of the duct in the dishwasher. By means of this embodiment, the need for producing the duct with large dimensions so as to receive the compressor is eliminated, and the volume wherein the available small components are placed is enabled to be used more efficiently.
In another embodiment of the present invention, the dishwasher comprises the heat source that is a resistance heater. By means of the heater, the air is heated before being discharged outside. In a version of this embodiment, the dishwasher comprises a temperature sensor that is disposed after the heat source and a control unit that provides the controlling of the heat source according to the data received from the temperature sensor. The temperature of the air passing over the first heat exchanger is not always the same. In this case, operating the heat source continuously at the same temperature and at the same setting causes energy loss. The control unit measures the temperature of the air to be discharged outside by means of the temperature sensor, and enables the heat source to be operated with less energy if the air is hotter than it should be, in other words hotter than required, and enables the heat source to be operated with more energy if not. Thus, the heat source is prevented from being operated unnecessarily when it is hot, providing energy savings.
In another embodiment of the present invention, the dishwasher comprises the compressor positioned before the first heat exchanger in the direction of the air flow, and the duct that enables the air sucked from the outer environment by means of the fan and heated by the compressor to be directed towards the first heat exchanger and enables the air passing over the first heat exchanger to be directed towards the heat source. In this embodiment, the temperature of the air passing over the first heat exchanger is enabled to be higher so as to allow the heat source to be operated with less energy, thus decreasing the possibility of condensation while the efficiency of the heat pump is increased by sending hot air onto the first heat exchanger.
In another embodiment of the present invention, the compressor is disposed at the inlet of the duct in the dishwasher. In this embodiment, it is aimed to use more efficiently the small volume wherein the components are placed as disclosed in the above embodiments.
By means of the dishwasher of the present invention, the problem of condensation that is encountered especially in built-in dishwashers is eliminated by means of the heat source heating the cold air and the duct that enables the air to be directed and wherein the first heat exchanger is disposed.
A dishwasher realized in order to attain the aim of the present invention is illustrated in the attached figures, where:
Figure 1 - is the perspective view of the dishwasher.
Figure 2 - is the schematic view of the heat pump.
Figure 3 - is the schematic view of the duct and the heat source.
The elements illustrated in the figures are numbered as follows:
  1. Dishwasher
  2. Body
  3. Washing tub
  4. Heat pump
  5. First heat exchanger
  6. Second heat exchanger
  7. Compressor
  8. Fan
  9. Heat source
  10. Duct
  11. Temperature sensor
  12. Control unit
The dishwasher (1) comprises a body (2); a washing tub (3) that is disposed in the body (2) and wherein the washing process is performed; a heat pump (4) that is disposed in the body (2) and that has at least one first heat exchanger (5) for absorbing the ambient heat by forming a cold surface, a second heat exchanger (6) that enables the washing water to be heated by creating a hot surface using the heat absorbed from the first heat exchanger (5) and a compressor (7) that is in fluid communication with the first heat exchanger (5) and the second heat exchanger (6) and that performs the refrigerant cycle; and at least one fan (8) that enables the outer environment air to be delivered onto the first heat exchanger (5). The ambient air is sucked and delivered to the first heat exchanger (5) by means of the fan (8). By drawing heat from the air in the first heat exchanger (5), thermal energy is drawn from the environment, and the thermal energy drawn is transferred to the second heat exchanger (6) so as to heat the water used for washing. By performing the refrigerant cycle by means of the compressor (7), the heat drawn from the environment is transferred between the heat exchangers (5, 6) (Figure 1, Figure 2).
The dishwasher (1) of the present invention comprises at least one heat source (9) that is disposed after the first heat exchanger (5) in a first air flow provided by the fan (8), and a duct (10) wherein the first heat exchanger (5) is disposed and that enables the air cooled by the first heat exchanger (5) to be directed onto the heat source (9). The first heat exchanger (5) which is one of the components of the heat pump (4) is disposed on the duct (10). The air passing over the first heat exchanger (5) is directed through the duct (10) and heated by the heat source (9). Thus, the air to be discharged from the dishwasher (1) is prevented from being heated and condensed in a manner to damage the environment (Figure 3).
In an embodiment of the present invention, the dishwasher (1) comprises the heat source (9) that is the compressor (7) performing the refrigerant cycle. Thus, without the need for using an additional heat source (9), the heat generated by the compressor (7) is used. Consequently, the air that cools down while passing over the first heat exchanger (5) is heated by being passed over the compressor (7) and is prevented from causing condensation while being discharged. Moreover, by also cooling the compressor (7), the compressor (7) is prevented from drawing excessive current while in operation, and a safer dishwasher (1) is realized.
In an embodiment of the present invention, the dishwasher (1) comprises the compressor (7) that is disposed in the duct (10). The heat dissipated by the compressor (7) while in operation is lower than the amount of heat dissipated by a resistance heater that is supplied with energy. By disposing the compressor (7) in the duct (10), the air that cools down by being passed over the first heat exchanger (5) is enabled to be completely directed towards the compressor (7) used as the heat source (9) without any loss, and thus, the air is enabled to be heated so as not to cause condensation on the surface the air hits thanks to the compressor (7) providing relatively small amount of heat.
In an embodiment of the present invention, the dishwasher (1) comprises the compressor (7) that is disposed at the outlet of the duct (10). In this embodiment, by being disposed into the duct (10) that forms a closed volume, the compressor (7) is prevented from excessively heating up. The compressor (7) generates heat while in operation; however, the compressor (7) must not heat up excessively for efficient operation. By positioning the compressor (7) just at the outlet of the duct (10), the air passing over the first heat exchanger (5) is heated while preventing the compressor (7) from excessively heating up.
In another embodiment of the present invention, the dishwasher (1) comprises the heat source (9) that is a resistance heater. In this embodiment, the air that cools down by passing over the first heat exchanger (5) is heated by the heat source (9) that is a resistance heater. Thus, the air can be heated up to high temperatures and the problem of condensation is eliminated.
In an embodiment of the present invention, the dishwasher (1) comprises a temperature sensor (11) that is positioned after the heat source (9) in the direction of the air flow, and a control unit (12) that adjusts the amount of heat provided by the heat source (9) according to the data received from the temperature sensor (11). The control unit (12) measures the temperature of the air heated by the heat source (9) and provides that the air is hot enough not to always cause condensation and cold enough to prevent excessive energy consumption. For example, in case the ambient temperature is high, the air passing over the first heat exchanger (5) is relatively hotter and is not required to be heated too much to prevent condensation. In such cases the control unit (12) operates the heat source (9) at lower temperatures, thus providing energy savings.
In an embodiment of the present invention, the dishwasher (1) comprises the compressor (7) positioned before the first heat exchanger (5) in the direction of the air flow, and the duct (10) that enables the air sucked from the outer environment by means of the fan (8) and heated by the compressor (7) to be directed towards the first heat exchanger (5) and enables the air passing over the first heat exchanger (5) to be directed towards the heat source (9). By means of this embodiment, the air sucked from the outer environment is heated by means of the compressor (7) and delivered to the first heat exchanger (5), thus increasing the efficiency of the first heat exchanger (5). Moreover, by sending hot air onto the first heat exchanger (5), the cold air obtained from over the first heat exchanger (5) is enabled to be relatively hotter and the possibility of condensation is decreased.
In an embodiment of the present invention, the dishwasher (1) comprises the compressor (7) that is disposed at the inlet of the duct (10). As disclosed in the above embodiments, the compressor (7) is prevented from excessively heating up by being placed into the duct (10).
In different embodiments of the present invention, the second heat exchanger (6) can be used as the heat source (9). This embodiment decreases the efficiency of the heat pump (4) for a certain amount; however, the condensation is prevented, thus providing user satisfaction.
By directing the air by means of the duct (10) of the present invention, lossless thermal contact with the heat source (9) is provided and condensation is prevented with the heating of the air. Thus, the cold air received from over the first heat exchanger (5) is heated and discharged. Since the temperature of the air discharged from the rear side of the dishwasher (1) is compatible with the ambient temperature, the kitchen environment is prevented from being damaged.

Claims (8)

  1. A dishwasher (1) comprising a body (2); a washing tub (3) that is disposed in the body (2) and wherein the washing process is performed; a heat pump (4) that is disposed in the body (2) and that has at least one first heat exchanger (5) for absorbing the ambient heat by forming a cold surface, a second heat exchanger (6) that enables the washing water to be heated by creating a hot surface using the heat absorbed from the first heat exchanger (5) and a compressor (7) that is in fluid communication with the first heat exchanger (5) and the second heat exchanger (6) and that performs the refrigerant cycle; and at least one fan (8) that enables the outer environment air to be delivered onto the first heat exchanger (5), characterized by at least one heat source (9) that is disposed after the first heat exchanger (5) in a first air flow provided by the fan (8), and a duct (10) wherein the first heat exchanger (5) is disposed and that enables the air cooled by the first heat exchanger (5) to be directed onto the heat source (9).
  2. A dishwasher (1) as in Claim 1, characterized by the heat source (9) that is the compressor (7) performing the refrigerant cycle.
  3. A dishwasher (1) as in Claim 2, characterized by the compressor (7) that is disposed in the duct (10).
  4. A dishwasher (1) as in Claim 2, characterized by the compressor (7) that is disposed at the outlet of the duct (10).
  5. A dishwasher (1) as in any one of the above claims, characterized by the heat source (9) that is a resistance heater.
  6. A dishwasher (1) as in Claim 5, characterized by a temperature sensor (11) that is positioned after the heat source (9) in the direction of the air flow, and a control unit (12) that adjusts the amount of heat provided by the heat source (9) according to the data received from the temperature sensor (11).
  7. A dishwasher (1) as in any one of the claims 1, 5 or 6, characterized by the compressor (7) positioned before the first heat exchanger (5) in the direction of the air flow, and the duct (10) that enables the air sucked from the outer environment by means of the fan (8) and heated by the compressor (7) to be directed towards the first heat exchanger (5) and enables the air passing over the first heat exchanger (5) to be directed towards the heat source (9).
  8. A dishwasher (1) as in Claim 7, characterized by the compressor (7) that is disposed at the inlet of the duct (10).
PCT/EP2018/069767 2017-08-18 2018-07-20 A dishwasher comprising a heat pump WO2019034373A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2017/12321A TR201712321A2 (en) 2017-08-18 2017-08-18 A DISHWASHER WITH A HEAT PUMP
TRA2017/12321 2017-08-18

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WO2019034373A1 true WO2019034373A1 (en) 2019-02-21

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Citations (6)

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Publication number Priority date Publication date Assignee Title
JP2013085801A (en) * 2011-10-20 2013-05-13 Panasonic Corp Washing and drying machine
EP2682038A2 (en) 2012-07-03 2014-01-08 Miele & Cie. KG Dishwasher and method for operating a dishwasher
EP2682037A2 (en) * 2012-07-03 2014-01-08 Miele & Cie. KG Dishwasher and method for operating a dishwasher
WO2015074834A1 (en) * 2013-11-22 2015-05-28 Arcelik Anonim Sirketi A dishwasher comprising a heat pump
WO2015101864A1 (en) * 2013-12-30 2015-07-09 Indesit Company S.P.A. Household drying appliance
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