EP2938775A1 - Heat pump laundry dryer - Google Patents

Heat pump laundry dryer

Info

Publication number
EP2938775A1
EP2938775A1 EP13821080.2A EP13821080A EP2938775A1 EP 2938775 A1 EP2938775 A1 EP 2938775A1 EP 13821080 A EP13821080 A EP 13821080A EP 2938775 A1 EP2938775 A1 EP 2938775A1
Authority
EP
European Patent Office
Prior art keywords
circuit board
compressor
provides
speed
control unit
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.)
Granted
Application number
EP13821080.2A
Other languages
German (de)
French (fr)
Other versions
EP2938775B1 (en
Inventor
Gokhan SIR
Umit PEHLIVAN
Onder Balioglu
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 EP2938775A1 publication Critical patent/EP2938775A1/en
Application granted granted Critical
Publication of EP2938775B1 publication Critical patent/EP2938775B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/206—Heat pump arrangements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/28—Air properties
    • D06F2103/36—Flow or velocity
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/50—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to heat pumps, e.g. pressure or flow rate
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/16—Air properties
    • D06F2105/24—Flow or velocity
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/26—Heat pumps
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/32—Air flow control means
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/28—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/50—Responding to irregular working conditions, e.g. malfunctioning of blowers

Definitions

  • the present invention relates to a heat pump laundry dryer comprising a variable speed compressor.
  • the heat pump used for drying the laundry is composed of a cooling line wherein the refrigerant flows, an evaporator, a condenser and a compressor that provides the circulation of the refrigerant by pressurizing it.
  • the drying process is performed by passing the processing air over the laundry in the closed cycle.
  • the condenser heats the processing air and the evaporator condenses the processing air.
  • the refrigerant delivered to the condenser from the compressor with increased pressure and temperature is delivered to the evaporator by passing through the expansion member, for example the capillary tube, or the expansion valve with decreased pressure.
  • a variable speed compressor is required for reducing the duration of the drying process and the energy consumption.
  • the compressor When the drying load increases according to the drying program selected by the user, the compressor is operated at high speed.
  • a circuit board is used for adjusting the speed of the compressor and a heat sink is disposed on the circuit board for cooling the electronic elements through which high current flows.
  • the current that flows through the circuit board used for adjusting the speed of the compressor varies depending on the speed of the compressor.
  • the components heating up due to the high current on the compressor circuit board are cooled by natural convection by means of a heat sink placed on the circuit board.
  • the control circuit of the electric motor driving the drum, the processing air fan and/or the compressor is at least partially placed between the evaporator and the condenser, inside the air stream circuit.
  • the humid air passing through the evaporator without fully condensing condenses on the electronic control circuit and causes the control circuit to be damaged.
  • the aim of the present invention is the realization of a heat pump laundry dryer comprising a variable speed compressor and wherein the circuit board that controls the compressor is prevented from overheating.
  • the heat pump laundry dryer realized in order to attain the aim of the present invention comprises a variable speed compressor the speed of which is adjusted by means of a circuit board according to the drying setting selected by the user and the amount of the laundry.
  • the components on the circuit board are cooled by a heat sink and a cooling fan that cools the heat sink by forced convection.
  • a temperature sensor placed on the circuit board or the heat sink detects the heating level of the circuit board.
  • the temperature of the circuit board varies depending on the speed of the compressor and the control unit provides the cooling of the heat sink and hence the circuit board in accordance with the amount of increase in the temperature thereof by increasing/decreasing the speed of the cooling fan.
  • the control unit provides the speed of the cooling fan to be increased upon detecting by means of the temperature sensor that the temperature of the circuit board is higher than the predetermined limit value and provides the speed of the cooling fan to be decreased or the cooling fan to be stopped upon detecting that the temperature of the circuit board is lower than the limit value.
  • the control unit upon detecting that the temperature of the circuit board is high, decides that the temperature of the compressor is increased excessively and provides the speed of the compressor to be decreased or the speed of the processing air fan to be increased.
  • control unit provides the speed of the compressor cooling fan to be increased upon detecting that the temperature of the circuit board is high.
  • control unit decides that the condensing efficiency of the evaporator is low and the compressor is overheated by operating excessively upon detecting that the temperature of the circuit board is high.
  • the control unit enables the flow rate of the refrigerant passing through the expansion member to be increased and decreases the compressor duty cycle by increasing the efficiency of the evaporator.
  • the circuit board is placed behind the front panel whereon the main control unit, the display and the buttons are mounted.
  • the circuit board is positioned away from the compressor and prevented from being affected due to heat and moisture.
  • the circuit board that operates the variable speed compressor is cooled in accordance with the changes in the compressor speed and the components on the circuit board are prevented from being damaged.
  • the efficiency of the compressor is increased by adjusting the speeds of the compressor, the processing air fan and/or the drum motor and energy consumption is reduced.
  • Figure 1 – is the schematic view of a heat pump laundry dryer comprising variable speed compressor.
  • the heat pump laundry dryer (1) comprises a drum (2) wherein the laundry to be dried is placed, a processing air fan (3), an air circulation duct (4) wherein the air cycle is performed by means of the processing air fan (3), a variable speed compressor (5) that performs the refrigerant cycle, that provides the suction and discharge of the refrigerant, the speed of which is adjusted in accordance with the drying load, an evaporator (6) that cools and condenses the processing air, a condenser (7) that provides the processing air to be heated, an expansion member (8) disposed on the cooling line, between the condenser (7) and the evaporator (6), a circuit board (9) that drives the compressor (5), a heat sink (10) that provides the components on the circuit board (9) to be cooled and a control unit (11) that regulates the operation of the laundry dryer (1).
  • the laundry dryer (1) of the present invention comprises
  • a cooling fan (13) placed near the heat sink (10) and that provides the circuit board (9) to be cooled by forced convection over the heat sink (10) and
  • control unit (11) that changes the speed of the cooling fan (13) according to the data received from the temperature sensor (12) and thus provides the circuit board (9) to be cooled in accordance with the heating level thereof that changes depending on the changes in the speed of the compressor (5).
  • variable speed compressor (5) which is also known as “inverter” type, is used.
  • the circuit board (9) changes the speed (rpm) of the compressor (5) in accordance with the drying program selection of the user.
  • the compressor (5) is operated at high speed.
  • the speed of the compressor (5) is increased, the temperature of the components on the circuit board (9) also increase and the temperature sensor (12) that is directly placed on the circuit board (9) or on the heat sink (10) detects the increase of temperature in the circuit board (9).
  • the control unit (11) increases the speed of the cooling fan (13) and thus speeds up the cooling of the circuit board (9) upon detecting by means of the temperature sensor (12) that the temperature of the circuit board (9) is higher than the limit value predetermined by the experimental studies and recorded in the memory thereof.
  • the control unit (11) decreases the speed of the cooling fan (13) or stops the cooling fan (13) upon detecting by means of the temperature sensor (12) that the temperature of the circuit board (9) is lower than the predetermined limit value and thus prevents unnecessary energy consumption.
  • the control unit (11) upon detecting by means of the temperature sensor (12) that the temperature of the circuit board (9) is higher than the predetermined limit value, decides that the temperature of the compressor (5) is increased and sends command to the circuit board (9) and thus provides the speed of the compressor (5) to be decreased and prevents the compressor (5) from overheating.
  • the control unit (11) decides that the temperature of the compressor (5) is increased and increases the speed of the processing air by increasing the speed of the processing air fan (3) and thus provides the load of the compressor (5) to be reduced and prevents the compressor (5) from overheating.
  • the electric motor (not illustrated in the figures) that drives the processing air fan (3) drives the drum (2) as well, when the speed of the processing air fan (3) is increased, the speed of the drum (2) is also increased, a greater amount of the drying load is compensated by the processing air cycle and the load of the compressor (5) is reduced.
  • the laundry dryer (1) comprises a compressor fan (14) that provides the compressor (5) to be cooled, and upon detecting by means of the temperature sensor (12) that the temperature of the circuit board (9) is higher than the predetermined limit value, the control unit (11) decides that the temperature of the compressor (5) is increased and increases the speed of the compressor fan (14).
  • the expansion member (8) is an expansion valve wherein the flow of the refrigerant can be adjusted, and upon detecting by means of the temperature sensor (12) that the temperature of the circuit board (9) is higher than the predetermined limit value, the control unit (11) decides that the evaporator (6) cannot perform sufficient condensing and provides the flow rate of the refrigerant passing through the expansion member (8) to be increased.
  • the condensing effectiveness of the evaporator (6) is increased and overheating is prevented by reducing the compressor (5) duty cycle.
  • the laundry dryer (1) comprises a front panel (15) whereon the control unit (11), the display and the buttons (not shown in the figures) are mounted and the circuit board (9) is placed near the control unit (11), behind the front panel (15).
  • the circuit board (9) is positioned away from the area where the compressor (5) is disposed and thus prevented from being affected due to heat and moisture.
  • the components on the circuit board (9) that drives the variable speed compressor (5) are prevented from being damaged due to overheating.
  • the efficiency of the compressor (5) is increased by adjusting the speeds of the compressor (5), the processing air fan (3) and/or the drum (2) motor and energy consumption is reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

The present invention relates to a heat pump laundry dryer (1) comprising a drum (2) wherein the laundry to be dried is placed, a processing air fan (3), an air circulation duct (4) wherein the air cycle is performed by means of the processing air fan (3), a variable speed compressor (5) that performs the refrigerant cycle and provides the suction and discharge of the refrigerant, the speed of which is adjusted in accordance with the drying load, an evaporator (6) that cools and condenses the processing air, a condenser (7) that provides the processing air to be heated, an expansion member (8) disposed on the cooling line, between the condenser (7) and the evaporator (6), a circuit board (9) that drives the compressor (5), and a heat sink (10) that provides the components on the circuit board (9) to be cooled.

Description

    HEAT PUMP LAUNDRY DRYER
  • The present invention relates to a heat pump laundry dryer comprising a variable speed compressor.
  • In heat pump laundry dryers, the heat pump used for drying the laundry is composed of a cooling line wherein the refrigerant flows, an evaporator, a condenser and a compressor that provides the circulation of the refrigerant by pressurizing it. The drying process is performed by passing the processing air over the laundry in the closed cycle. The condenser heats the processing air and the evaporator condenses the processing air. In the refrigerant cycle, the refrigerant delivered to the condenser from the compressor with increased pressure and temperature is delivered to the evaporator by passing through the expansion member, for example the capillary tube, or the expansion valve with decreased pressure. In heat pump laundry dryers, a variable speed compressor is required for reducing the duration of the drying process and the energy consumption. When the drying load increases according to the drying program selected by the user, the compressor is operated at high speed. A circuit board is used for adjusting the speed of the compressor and a heat sink is disposed on the circuit board for cooling the electronic elements through which high current flows. The current that flows through the circuit board used for adjusting the speed of the compressor varies depending on the speed of the compressor. The components heating up due to the high current on the compressor circuit board are cooled by natural convection by means of a heat sink placed on the circuit board. When the drying load increases in the heat pump laundry dryer, the temperature of the circuit board increases excessively depending on the increase in the speed of the compressor and the heat sink becomes insufficient for cooling the circuit board.
  • In the state of the art European Patent Application No. EP2312049, in the heat pump laundry dryer, the control circuit of the electric motor driving the drum, the processing air fan and/or the compressor, is at least partially placed between the evaporator and the condenser, inside the air stream circuit. The humid air passing through the evaporator without fully condensing condenses on the electronic control circuit and causes the control circuit to be damaged.
  • The aim of the present invention is the realization of a heat pump laundry dryer comprising a variable speed compressor and wherein the circuit board that controls the compressor is prevented from overheating.
  • The heat pump laundry dryer realized in order to attain the aim of the present invention comprises a variable speed compressor the speed of which is adjusted by means of a circuit board according to the drying setting selected by the user and the amount of the laundry.
  • The components on the circuit board are cooled by a heat sink and a cooling fan that cools the heat sink by forced convection.
  • A temperature sensor placed on the circuit board or the heat sink detects the heating level of the circuit board. The temperature of the circuit board varies depending on the speed of the compressor and the control unit provides the cooling of the heat sink and hence the circuit board in accordance with the amount of increase in the temperature thereof by increasing/decreasing the speed of the cooling fan.
  • The control unit provides the speed of the cooling fan to be increased upon detecting by means of the temperature sensor that the temperature of the circuit board is higher than the predetermined limit value and provides the speed of the cooling fan to be decreased or the cooling fan to be stopped upon detecting that the temperature of the circuit board is lower than the limit value.
  • In an embodiment of the present invention, upon detecting that the temperature of the circuit board is high, the control unit decides that the temperature of the compressor is increased excessively and provides the speed of the compressor to be decreased or the speed of the processing air fan to be increased.
  • In another embodiment of the present invention, the control unit provides the speed of the compressor cooling fan to be increased upon detecting that the temperature of the circuit board is high.
  • In another embodiment of the present invention, the control unit decides that the condensing efficiency of the evaporator is low and the compressor is overheated by operating excessively upon detecting that the temperature of the circuit board is high. The control unit enables the flow rate of the refrigerant passing through the expansion member to be increased and decreases the compressor duty cycle by increasing the efficiency of the evaporator.
  • In another embodiment of the present invention, the circuit board is placed behind the front panel whereon the main control unit, the display and the buttons are mounted. Thus, the circuit board is positioned away from the compressor and prevented from being affected due to heat and moisture.
  • In the laundry dryer of the present invention, the circuit board that operates the variable speed compressor is cooled in accordance with the changes in the compressor speed and the components on the circuit board are prevented from being damaged. The efficiency of the compressor is increased by adjusting the speeds of the compressor, the processing air fan and/or the drum motor and energy consumption is reduced.
  • The laundry dryer realized in order to attain the aim of the present invention is illustrated in the attached figure, where:
  • Figure 1 – is the schematic view of a heat pump laundry dryer comprising variable speed compressor.
  • The elements illustrated in the figure are numbered as follows:
    1. Laundry dryer
    2. Drum
    3. Processing air fan
    4. Air circulation duct
    5. Compressor
    6. Evaporator
    7. Condenser
    8. Expansion member
    9. Circuit board
    10. Heat sink
    11. Control unit
    12. Temperature sensor
    13. Cooling fan
    14. Compressor fan
    15. Front panel
  • The heat pump laundry dryer (1) comprises a drum (2) wherein the laundry to be dried is placed, a processing air fan (3), an air circulation duct (4) wherein the air cycle is performed by means of the processing air fan (3), a variable speed compressor (5) that performs the refrigerant cycle, that provides the suction and discharge of the refrigerant, the speed of which is adjusted in accordance with the drying load, an evaporator (6) that cools and condenses the processing air, a condenser (7) that provides the processing air to be heated, an expansion member (8) disposed on the cooling line, between the condenser (7) and the evaporator (6), a circuit board (9) that drives the compressor (5), a heat sink (10) that provides the components on the circuit board (9) to be cooled and a control unit (11) that regulates the operation of the laundry dryer (1).
  • The laundry dryer (1) of the present invention comprises
  • - a temperature sensor (12) placed on the circuit board (9) or the heat sink (10) and that detects the temperature of the compressor (5) circuit board (9),
  • - a cooling fan (13) placed near the heat sink (10) and that provides the circuit board (9) to be cooled by forced convection over the heat sink (10) and
  • - a control unit (11) that changes the speed of the cooling fan (13) according to the data received from the temperature sensor (12) and thus provides the circuit board (9) to be cooled in accordance with the heating level thereof that changes depending on the changes in the speed of the compressor (5).
  • In the laundry dryer (1) of the present invention, a variable speed compressor (5), which is also known as “inverter” type, is used. The circuit board (9) changes the speed (rpm) of the compressor (5) in accordance with the drying program selection of the user. When drying load increases, the compressor (5) is operated at high speed. When the speed of the compressor (5) is increased, the temperature of the components on the circuit board (9) also increase and the temperature sensor (12) that is directly placed on the circuit board (9) or on the heat sink (10) detects the increase of temperature in the circuit board (9).
  • The control unit (11) increases the speed of the cooling fan (13) and thus speeds up the cooling of the circuit board (9) upon detecting by means of the temperature sensor (12) that the temperature of the circuit board (9) is higher than the limit value predetermined by the experimental studies and recorded in the memory thereof.
  • The control unit (11) decreases the speed of the cooling fan (13) or stops the cooling fan (13) upon detecting by means of the temperature sensor (12) that the temperature of the circuit board (9) is lower than the predetermined limit value and thus prevents unnecessary energy consumption.
  • In an embodiment of the present invention, upon detecting by means of the temperature sensor (12) that the temperature of the circuit board (9) is higher than the predetermined limit value, the control unit (11) decides that the temperature of the compressor (5) is increased and sends command to the circuit board (9) and thus provides the speed of the compressor (5) to be decreased and prevents the compressor (5) from overheating.
  • In another embodiment of the present invention, upon detecting by means of the temperature sensor (12) that the temperature of the circuit board (9) is higher than the predetermined limit value, the control unit (11) decides that the temperature of the compressor (5) is increased and increases the speed of the processing air by increasing the speed of the processing air fan (3) and thus provides the load of the compressor (5) to be reduced and prevents the compressor (5) from overheating. The electric motor (not illustrated in the figures) that drives the processing air fan (3) drives the drum (2) as well, when the speed of the processing air fan (3) is increased, the speed of the drum (2) is also increased, a greater amount of the drying load is compensated by the processing air cycle and the load of the compressor (5) is reduced.
  • In another embodiment of the present invention, the laundry dryer (1) comprises a compressor fan (14) that provides the compressor (5) to be cooled, and upon detecting by means of the temperature sensor (12) that the temperature of the circuit board (9) is higher than the predetermined limit value, the control unit (11) decides that the temperature of the compressor (5) is increased and increases the speed of the compressor fan (14).
  • In another embodiment of the present invention, the expansion member (8) is an expansion valve wherein the flow of the refrigerant can be adjusted, and upon detecting by means of the temperature sensor (12) that the temperature of the circuit board (9) is higher than the predetermined limit value, the control unit (11) decides that the evaporator (6) cannot perform sufficient condensing and provides the flow rate of the refrigerant passing through the expansion member (8) to be increased. Thus, the condensing effectiveness of the evaporator (6) is increased and overheating is prevented by reducing the compressor (5) duty cycle.
  • In an embodiment of the present invention, the laundry dryer (1) comprises a front panel (15) whereon the control unit (11), the display and the buttons (not shown in the figures) are mounted and the circuit board (9) is placed near the control unit (11), behind the front panel (15). The circuit board (9) is positioned away from the area where the compressor (5) is disposed and thus prevented from being affected due to heat and moisture.
  • In the laundry dryer (1) of the present invention, the components on the circuit board (9) that drives the variable speed compressor (5) are prevented from being damaged due to overheating. The efficiency of the compressor (5) is increased by adjusting the speeds of the compressor (5), the processing air fan (3) and/or the drum (2) motor and energy consumption is reduced.

Claims (8)

  1. A laundry dryer (1) comprising a drum (2), a processing air fan (3), an air circulation duct (4) and a variable speed compressor (5) that performs the refrigerant cycle, the speed of which is adjusted in accordance with the drying load, an evaporator (6) that cools and condenses the processing air, a condenser (7) that provides the processing air to be heated, an expansion member (8) disposed between the condenser (7) and the evaporator (6), a circuit board (9) that drives the compressor (5), a heat sink (10) that provides the components on the circuit board (9) to be cooled and a control unit (11), characterized by
    - a temperature sensor (12) placed on the circuit board (9) or the heat sink (10) and that detects the temperature of the circuit board (9),
    -a cooling fan (13) placed near the heat sink (10) and that provides the circuit board (9) to be cooled by forced convection and
    - a control unit (11) that provides the speed of the cooling fan (13) to be changed according to the data received from the temperature sensor (12) and thus provides the circuit board (9) to be cooled in accordance with the heating level thereof that changes depending on the speed of the compressor (5).
  2. The laundry dryer (1) as in Claim 1, characterized by the control unit (11) that provides the speed of the cooling fan (13) to be increased upon detecting by means of the temperature sensor (12) that the temperature of the circuit board (9) is higher than the predetermined limit value.
  3. The laundry dryer (1) as in Claim 1, characterized by the control unit (11) that provides the speed of the cooling fan (13) to be decreased or the cooling fan (13) to be stopped upon detecting by means of the temperature sensor (12) that the temperature of the circuit board (9) is lower than the predetermined limit value.
  4. The laundry dryer (1) as in any one of the above claims, characterized by the control unit (11) that decides that the temperature of the compressor (5) is increased and provides the speed of the compressor (5) to be decreased by sending command to the circuit board (9) upon detecting by means of the temperature sensor (12) that the temperature of the circuit board (9) is higher than the predetermined limit value.
  5. The laundry dryer (1) as in any one of the above claims, characterized by the control unit (11) that provides the speed of the processing air fan (3) to be increased upon detecting by means of the temperature sensor (12) that the temperature of the circuit board (9) is higher than the predetermined limit value.
  6. The laundry dryer (1) as in any one of the above claims, characterized by a compressor fan (14) providing the compressor (5) to be cooled and by the control unit (11) that provides the speed of the compressor fan (14) to be increased upon detecting by means of the temperature sensor (12) that the temperature of the circuit board (9) is higher than the predetermined limit value.
  7. The laundry dryer (1) as in any one of the above claims, characterized by the expansion member (8) which is an expansion valve wherein the flow of the refrigerant can be adjusted and by the control unit (11) that decides that the evaporator (6) cannot perform sufficient condensing and provides the flow rate of the refrigerant passing through the expansion member (8) to be increased upon detecting by means of the temperature sensor (12) that the temperature of the circuit board (9) is higher than the predetermined limit value.
  8. The laundry dryer (1) as in any one of the above claims, characterized by a front panel (15) whereon the control unit (11), the display and the buttons are mounted and by the circuit board (9) placed near the control unit (11), behind the front panel (15).
EP13821080.2A 2012-12-27 2013-12-13 Heat pump laundry dryer Active EP2938775B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201215462 2012-12-27
PCT/EP2013/076603 WO2014102073A1 (en) 2012-12-27 2013-12-13 Heat pump laundry dryer

Publications (2)

Publication Number Publication Date
EP2938775A1 true EP2938775A1 (en) 2015-11-04
EP2938775B1 EP2938775B1 (en) 2016-12-07

Family

ID=49956131

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13821080.2A Active EP2938775B1 (en) 2012-12-27 2013-12-13 Heat pump laundry dryer

Country Status (3)

Country Link
EP (1) EP2938775B1 (en)
ES (1) ES2618413T3 (en)
WO (1) WO2014102073A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9562707B2 (en) 2013-03-14 2017-02-07 Whirlpool Corporation Refrigerator cooling system having a secondary cooling loop
WO2016108793A1 (en) 2014-12-30 2016-07-07 Arçeli̇k Anoni̇m Şi̇rketi̇ A heat pump laundry dryer
US10087569B2 (en) 2016-08-10 2018-10-02 Whirlpool Corporation Maintenance free dryer having multiple self-cleaning lint filters
US10738411B2 (en) 2016-10-14 2020-08-11 Whirlpool Corporation Filterless air-handling system for a heat pump laundry appliance
US10519591B2 (en) 2016-10-14 2019-12-31 Whirlpool Corporation Combination washing/drying laundry appliance having a heat pump system with reversible condensing and evaporating heat exchangers
US10502478B2 (en) 2016-12-20 2019-12-10 Whirlpool Corporation Heat rejection system for a condenser of a refrigerant loop within an appliance
US10514194B2 (en) 2017-06-01 2019-12-24 Whirlpool Corporation Multi-evaporator appliance having a multi-directional valve for delivering refrigerant to the evaporators
US10718082B2 (en) 2017-08-11 2020-07-21 Whirlpool Corporation Acoustic heat exchanger treatment for a laundry appliance having a heat pump system
CN110306330B (en) * 2018-03-27 2023-05-23 重庆海尔洗衣机有限公司 Clothes processing equipment and control panel cooling method thereof
CN111038091B (en) * 2018-10-15 2021-10-01 科峤工业股份有限公司 Method and device for preventing ink volatile particles from contaminating heater in oven
CN117802756B (en) * 2023-12-22 2025-09-23 珠海格力电器股份有限公司 Drying control method and clothing processing equipment

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2460928B1 (en) * 2010-12-02 2014-02-26 Electrolux Home Products Corporation N.V. Method of operating a heat pump dryer and heat pump dryer
EP2527518B1 (en) * 2011-05-26 2017-05-03 Electrolux Home Products Corporation N.V. Laundry treatment apparatus having heat pump system with safety element
EP2733255A1 (en) * 2012-11-16 2014-05-21 Electrolux Home Products Corporation N.V. Method for operating a laundry treatment apparatus and laundry treatment apparatus

Also Published As

Publication number Publication date
ES2618413T3 (en) 2017-06-21
WO2014102073A1 (en) 2014-07-03
EP2938775B1 (en) 2016-12-07

Similar Documents

Publication Publication Date Title
WO2014102073A1 (en) Heat pump laundry dryer
EP2920356B1 (en) Method of operating a heat pump laundry dryer and heat pump laundry dryer or heat pump washing machine having drying function
EP2122040B1 (en) Heat-pump clothes drying machine
EP2922993B1 (en) A method for controlling a laundry dryer with a variable drum rotation speed and a variable fan rotation speed
CN102677441B (en) A kind of heat pump clothes dryer control method and heat pump clothes dryer
EP2460928B1 (en) Method of operating a heat pump dryer and heat pump dryer
EP2920353B1 (en) Method for operating a laundry treatment apparatus and laundry treatment apparatus
KR102009278B1 (en) A clothes dryer having a expansion valve which is variable according to the driving mode
EP2935687B1 (en) A method for controlling a laundry drying machine and a corresponding laundry drying machine
AU2011335047B2 (en) Method of operating a heat pump dryer and heat pump dryer
CN106592185A (en) Drying device, and control method and control system thereof
EP2460926A1 (en) Heat pump dryer
EP2312049B1 (en) A tumble dryer with a heat pump system
EP3265602B1 (en) Heat pump type laundry dryer and method for controlling the same
CN111945401B (en) Appliance for drying laundry and method for operating a heat pump of the appliance
JP2013081637A (en) Clothes dryer
JP2014050500A (en) Clothes dryer
EP2735641A1 (en) A method for controlling a laundry dryer including a fan-drum motor or fan motor with a variable speed

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20150521

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20160802

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 851813

Country of ref document: AT

Kind code of ref document: T

Effective date: 20161215

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 4

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602013015173

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20161207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170307

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170308

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20170113

Year of fee payment: 4

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 851813

Country of ref document: AT

Kind code of ref document: T

Effective date: 20161207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161231

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2618413

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20170621

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20170113

Year of fee payment: 4

Ref country code: IT

Payment date: 20161231

Year of fee payment: 4

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170407

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170407

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170307

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602013015173

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161213

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161231

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161231

26N No opposition filed

Effective date: 20170908

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161213

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20131213

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20171213

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161213

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20180831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171213

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180102

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171213

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20190702

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161207

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20251211

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20251124

Year of fee payment: 13