WO2024058748A1 - A heat pump dishwasher and the control method thereof - Google Patents

A heat pump dishwasher and the control method thereof Download PDF

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Publication number
WO2024058748A1
WO2024058748A1 PCT/TR2023/050642 TR2023050642W WO2024058748A1 WO 2024058748 A1 WO2024058748 A1 WO 2024058748A1 TR 2023050642 W TR2023050642 W TR 2023050642W WO 2024058748 A1 WO2024058748 A1 WO 2024058748A1
Authority
WO
WIPO (PCT)
Prior art keywords
dishwasher
blowing mechanism
heat pump
refrigerant fluid
operated
Prior art date
Application number
PCT/TR2023/050642
Other languages
French (fr)
Inventor
Mustafa DOGANULKER
Huseyin CALISKAN
Turan Ege OZTIN
Hamit Taylan YUCE
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
Priority claimed from TR2022/014349 external-priority patent/TR2022014349A1/en
Application filed by Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Publication of WO2024058748A1 publication Critical patent/WO2024058748A1/en

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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
    • A47L15/48—Drying arrangements
    • A47L15/483—Drying arrangements by using condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/26—Problems to be solved characterised by the startup of the refrigeration cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/11—Fan speed control
    • F25B2600/112—Fan speed control of evaporator fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems

Definitions

  • the present invention relates to a heat pump dishwasher wherein the refrigerant fluid leakage is effectively discharged, and to the control method thereof.
  • Heat pumps are effectively used as a drying system in dishwashers.
  • the heat pump comprises components such as compressor, evaporator, condenser, capillary tube wherein the refrigerant fluid is circulated.
  • Today, R600 (isobutane), which is also flammable, is used as a refrigerant fluid. Said refrigerant fluid is widely used in the heat pumps due to the ability thereof to change state even at low temperatures.
  • an ambient cooler wherein a flammable refrigerant fluid is used comprises a mechanism to discharge a possible refrigerant fluid leakage.
  • the aim of the present invention is the realization of a heat pump dishwasher wherein the refrigerant fluid leakage is effectively discharged.
  • the dishwasher realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises a body; a heat pump which is provided in the body and which has at least one compressor, at least one evaporator and at least one condenser; and at least one blowing mechanism which is disposed in the body, which enables the refrigerant fluid leaking into the body to be discharged from the body and which is operated first when the dishwasher is turned on.
  • the blowing mechanism when the dishwasher is operated, first the blowing mechanism is operated before the washing process.
  • the blowing mechanism in case the refrigerant fluid leaks into the dishwasher body as a result of a leakage, first the blowing mechanism is operated for safety purposes and the flammable refrigerant fluid is enabled to be discharged from the dishwasher body.
  • the blowing mechanism is operated before the washing program.
  • the blowing mechanism in case the refrigerant fluid leaks into the dishwasher body as a result of a leakage, first the blowing mechanism is operated at the beginning of the washing program for safety purposes.
  • the flammable refrigerant fluid is enabled to be discharged from the dishwasher body.
  • the blowing mechanism when the power comes back on after an outage, the blowing mechanism is operated again, and the refrigerant fluid leaking into the dishwasher body in case of a possible refrigerant fluid leakage is enabled to be discharged.
  • the blowing mechanism is at least one fan.
  • the fan or fans allowing the refrigerant fluid to pass into the vapor phase and provided on the evaporator, which is a part of the heat pump, is/are used as the blowing mechanism.
  • the blowing mechanism when the power comes back on after an outage, the blowing mechanism is operated before the washing program starts, especially before the heat pump is activated, so as to enable the possible flammable refrigerant fluid leakage to be discharged from the dishwasher.
  • the blowing mechanism is operated before the heat pump is activated.
  • Figure 1 - is the perspective view of a dishwasher body.
  • Figure 2 - is the front view of the dishwasher body.
  • Figure 3 - is the rear view of the dishwasher body.
  • the dishwasher (1) comprises a body (2); a heat pump (3) which is provided in the body (2) and which has at least one compressor, at least one evaporator (5) and at least one condenser; and at least one blowing mechanism (4) which is disposed in the body (2), which enables the refrigerant fluid leaking into the body (2) to be discharged from the body (2) and which is operated first when the dishwasher (1) is turned on ( Figure 1).
  • the blowing mechanism (4) when the dishwasher (1) is operated, first the blowing mechanism (4) is operated before the washing process. Thus, in case the refrigerant fluid leaks into the body (2) as a result of a leakage, first the blowing mechanism (4) is operated for safety purposes and the flammable refrigerant fluid is enabled to be discharged from the body (2). In an embodiment of the present invention, the blowing mechanism (4) is operated before the washing program. In this embodiment, in the dishwasher (1), in case the refrigerant fluid leaks into the body (2) as a result of a leakage, first the blowing mechanism (4) is operated at the beginning of the washing program for safety purposes. Thus, the flammable refrigerant fluid is enabled to be discharged from the body (2).
  • the blowing mechanism (4) is operated before the heat pump (3) is activated.
  • the refrigerant fluid accumulating in the body (2) as a result of a possible refrigerant fluid leakage is enabled to be discharged from the dishwasher (1) by means of the blowing mechanism (4).
  • the blowing mechanism (4) when the power comes back on after an outage, the blowing mechanism (4) is operated again, and the refrigerant fluid leaking into the body (2) in case of a possible refrigerant fluid leakage is enabled to be discharged.
  • the blowing mechanism (4) comprises at least one fan.
  • the fan or fans allowing the refrigerant fluid to pass into the vapor phase and provided on the evaporator (5), which is a part of the heat pump (3), is/are used as the blowing mechanism (4).
  • the refrigerant fluid leakage is enabled to be discharged by using the evaporator (5) fans which are already used in the heat pump dishwasher (1).
  • the blowing mechanism (4) when the power comes back on after an outage, the blowing mechanism (4) is operated before the washing program starts, especially before the heat pump (3) is activated, so as to enable the possible flammable refrigerant fluid leakage to be discharged from the dishwasher (1).
  • the blowing mechanism (4) is operated before the heat pump (3) is activated.
  • the control method of the present invention comprises the step of operating the blowing mechanism (4) when the dishwasher is operated.
  • the blowing mechanism (4) is operated before the washing program starts.
  • the blowing mechanism (4) is operated before the heat pump (3) is activated.
  • control method comprises the step of first operating the blowing mechanism (4) when the power comes back on after an outage.
  • a possible refrigerant fluid leaking into the body (2) is discharged from the body (2).
  • the risk of ignition due to the accumulation of the leaked refrigerant fluid with increased concentration in the body (2) is eliminated, and any damage to the dishwasher (1) and the environment is prevented.

Landscapes

  • Washing And Drying Of Tableware (AREA)

Abstract

The present invention relates to a dishwasher (1) comprising a body (2); a heat pump (3) which is provided in the body (2) and which has at least one compressor, at least one evaporator (5) and at least one condenser; and at least one blowing mechanism (4) which is disposed in the body (2), which enables the refrigerant fluid leaking into the body (2) to be discharged from the body (2) and which is operated first when the dishwasher (1) is turned on.

Description

A HEAT PUMP DISHWASHER AND THE CONTROL METHOD THEREOF
The present invention relates to a heat pump dishwasher wherein the refrigerant fluid leakage is effectively discharged, and to the control method thereof.
Heat pumps are effectively used as a drying system in dishwashers. In the heat pump dishwashers the heat pump comprises components such as compressor, evaporator, condenser, capillary tube wherein the refrigerant fluid is circulated. Today, R600 (isobutane), which is also flammable, is used as a refrigerant fluid. Said refrigerant fluid is widely used in the heat pumps due to the ability thereof to change state even at low temperatures.
If there is a refrigerant fluid leakage in the heat pump system, it is possible that the dishwasher and the environment wherein the dishwasher is installed may be damaged due to the ignition and burning of the refrigerant fluid with the operation of the dishwasher. Since the heat pump is disposed in the dishwasher body, any possible refrigerant fluid leakage condenses in the body. This increases the possibility of ignition of the refrigerant fluid due to any reason, such as an electric arc. In the experiments carried out during the production phase, such situations are encountered.
In the state of the art Chinese Utility Model Application Document No. CN205066272, an ambient cooler wherein a flammable refrigerant fluid is used comprises a mechanism to discharge a possible refrigerant fluid leakage.
In another state of the art Chinese Utility Model Application Document No. CN201520363768, a heat pump is disclosed, which prevents the formation of a flammable concentration volume in the environment, even if a flammable refrigerant fluid leakage occurs.
The aim of the present invention is the realization of a heat pump dishwasher wherein the refrigerant fluid leakage is effectively discharged.
The dishwasher realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises a body; a heat pump which is provided in the body and which has at least one compressor, at least one evaporator and at least one condenser; and at least one blowing mechanism which is disposed in the body, which enables the refrigerant fluid leaking into the body to be discharged from the body and which is operated first when the dishwasher is turned on.
In this embodiment of the present invention, when the dishwasher is operated, first the blowing mechanism is operated before the washing process. Thus, in case the refrigerant fluid leaks into the dishwasher body as a result of a leakage, first the blowing mechanism is operated for safety purposes and the flammable refrigerant fluid is enabled to be discharged from the dishwasher body.
In an embodiment of the present invention, the blowing mechanism is operated before the washing program. In this embodiment, in the heat pump dishwasher, in case the refrigerant fluid leaks into the dishwasher body as a result of a leakage, first the blowing mechanism is operated at the beginning of the washing program for safety purposes. Thus, the flammable refrigerant fluid is enabled to be discharged from the dishwasher body.
In another embodiment of the present invention, when the power comes back on after an outage, the blowing mechanism is operated again, and the refrigerant fluid leaking into the dishwasher body in case of a possible refrigerant fluid leakage is enabled to be discharged.
In an embodiment of the present invention, the blowing mechanism is at least one fan. In the embodiment of the present invention, the fan or fans allowing the refrigerant fluid to pass into the vapor phase and provided on the evaporator, which is a part of the heat pump, is/are used as the blowing mechanism.
In another embodiment of the present invention, when the power comes back on after an outage, the blowing mechanism is operated before the washing program starts, especially before the heat pump is activated, so as to enable the possible flammable refrigerant fluid leakage to be discharged from the dishwasher. In the embodiment of the present invention, the blowing mechanism is operated before the heat pump is activated. By means of the present invention, in a heat pump dishwasher, a possible refrigerant fluid leaking into the body is discharged from the dishwasher body. Thus, the risk of ignition due to the accumulation of the leaked refrigerant fluid with increased concentration in the dishwasher body is eliminated, and any damage to the dishwasher and the environment is prevented.
A heat pump 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 a dishwasher body.
Figure 2 - is the front view of the dishwasher body.
Figure 3 - is the rear view of the dishwasher body.
The elements illustrated in the figures are numbered as follows:
1. Dishwasher
2. Body
3. Heat pump
4. Blowing mechanism
5. Evaporator
The dishwasher (1) comprises a body (2); a heat pump (3) which is provided in the body (2) and which has at least one compressor, at least one evaporator (5) and at least one condenser; and at least one blowing mechanism (4) which is disposed in the body (2), which enables the refrigerant fluid leaking into the body (2) to be discharged from the body (2) and which is operated first when the dishwasher (1) is turned on (Figure 1).
In this embodiment of the present invention, when the dishwasher (1) is operated, first the blowing mechanism (4) is operated before the washing process. Thus, in case the refrigerant fluid leaks into the body (2) as a result of a leakage, first the blowing mechanism (4) is operated for safety purposes and the flammable refrigerant fluid is enabled to be discharged from the body (2). In an embodiment of the present invention, the blowing mechanism (4) is operated before the washing program. In this embodiment, in the dishwasher (1), in case the refrigerant fluid leaks into the body (2) as a result of a leakage, first the blowing mechanism (4) is operated at the beginning of the washing program for safety purposes. Thus, the flammable refrigerant fluid is enabled to be discharged from the body (2).
In another embodiment of the present invention, the blowing mechanism (4) is operated before the heat pump (3) is activated. Thus, the refrigerant fluid accumulating in the body (2) as a result of a possible refrigerant fluid leakage is enabled to be discharged from the dishwasher (1) by means of the blowing mechanism (4).
In another embodiment of the present invention, when the power comes back on after an outage, the blowing mechanism (4) is operated again, and the refrigerant fluid leaking into the body (2) in case of a possible refrigerant fluid leakage is enabled to be discharged.
In an embodiment of the present invention, the blowing mechanism (4) comprises at least one fan. In the embodiment of the present invention, the fan or fans allowing the refrigerant fluid to pass into the vapor phase and provided on the evaporator (5), which is a part of the heat pump (3), is/are used as the blowing mechanism (4). In this embodiment, in case of flammable refrigerant fluid leakage which may occur in the heat pump (3) system, the refrigerant fluid leakage is enabled to be discharged by using the evaporator (5) fans which are already used in the heat pump dishwasher (1). Thus, there is no cost increase since no additional component is used. Consequently, product safety is increased and risks are mitigated without the use of any additional components (Figure 2 and Figure 3).
In another embodiment of the present invention, when the power comes back on after an outage, the blowing mechanism (4) is operated before the washing program starts, especially before the heat pump (3) is activated, so as to enable the possible flammable refrigerant fluid leakage to be discharged from the dishwasher (1). In the embodiment of the present invention, the blowing mechanism (4) is operated before the heat pump (3) is activated.
The control method of the present invention comprises the step of operating the blowing mechanism (4) when the dishwasher is operated. In an embodiment of the control method of the present invention, the blowing mechanism (4) is operated before the washing program starts.
In another embodiment of the control method of the present invention, the blowing mechanism (4) is operated before the heat pump (3) is activated.
In yet another embodiment of the present invention, the control method comprises the step of first operating the blowing mechanism (4) when the power comes back on after an outage.
By means of the present invention, in a heat pump dishwasher (1), a possible refrigerant fluid leaking into the body (2) is discharged from the body (2). Thus, the risk of ignition due to the accumulation of the leaked refrigerant fluid with increased concentration in the body (2) is eliminated, and any damage to the dishwasher (1) and the environment is prevented.

Claims

1. A dishwasher (1) comprising a body (2) and a heat pump (3) which is provided in the body (2) and which has at least one compressor, at least one evaporator (5) and at least one condenser, characterized by at least one blowing mechanism (4) which is disposed in the body (2), which enables the refrigerant fluid leaking into the body (2) to be discharged from the body (2) and which is operated first when the dishwasher (1) is turned on.
2. A dishwasher (1) as in Claim 1, characterized by the blowing mechanism (4) which is operated first before the washing process.
3. A dishwasher (1) as in Claim 1, characterized by the blowing mechanism (4) which is operated first when the power comes back on after an outage.
4. A dishwasher (1) as in Claim 3, characterized by the blowing mechanism (4) which is operated before the heat pump (3) is activated.
5. A dishwasher (1) as in any one of the above claims, characterized by the blowing mechanism (4) which comprises at least one fan.
6. A dishwasher (1) as in any one of the above claims, characterized by the blowing mechanism (4) which is the fan or fans allowing the refrigerant fluid to pass into the vapor phase and provided on the evaporator (5), which is a part of the heat pump (3).
7. A dishwasher (1) control method, comprising the step of operating the blowing mechanism (4) when the dishwasher is operated.
8. A dishwasher (1) control method as in Claim 7, comprising the step of operating the blowing mechanism (4) before the washing program starts.
9. A dishwasher (1) control method as in Claim 7, comprising the step of operating the blowing mechanism (4) before the heat pump (3) is activated. A dishwasher (1) control method as in Claim 7, comprising the step of first operating the blowing mechanism (4) when the power comes back on after an outage.
PCT/TR2023/050642 2022-09-16 2023-07-05 A heat pump dishwasher and the control method thereof WO2024058748A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2022/014349 TR2022014349A1 (en) 2022-09-16 A DISHWASHER WITH HEAT PUMP AND ITS CONTROL METHOD
TR2022014349 2022-09-16

Publications (1)

Publication Number Publication Date
WO2024058748A1 true WO2024058748A1 (en) 2024-03-21

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ID=90275503

Family Applications (1)

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PCT/TR2023/050642 WO2024058748A1 (en) 2022-09-16 2023-07-05 A heat pump dishwasher and the control method thereof

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009207673A (en) * 2008-03-04 2009-09-17 Toshiba Corp Washing/drying machine
US20210215413A1 (en) * 2018-07-09 2021-07-15 Crane Payment Innovations, Inc. Refrigerant leak detector for a vending machine
EP3967943A1 (en) * 2020-09-14 2022-03-16 Panasonic Intellectual Property Management Co., Ltd. Heat medium circulation system
JP2022049591A (en) * 2020-09-16 2022-03-29 株式会社前川製作所 Combustion prevention device and refrigeration cycle system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009207673A (en) * 2008-03-04 2009-09-17 Toshiba Corp Washing/drying machine
US20210215413A1 (en) * 2018-07-09 2021-07-15 Crane Payment Innovations, Inc. Refrigerant leak detector for a vending machine
EP3967943A1 (en) * 2020-09-14 2022-03-16 Panasonic Intellectual Property Management Co., Ltd. Heat medium circulation system
JP2022049591A (en) * 2020-09-16 2022-03-29 株式会社前川製作所 Combustion prevention device and refrigeration cycle system

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