EP2594688A1 - Sèche-linge avec système de pompe à chaleur - Google Patents

Sèche-linge avec système de pompe à chaleur Download PDF

Info

Publication number
EP2594688A1
EP2594688A1 EP11189889.6A EP11189889A EP2594688A1 EP 2594688 A1 EP2594688 A1 EP 2594688A1 EP 11189889 A EP11189889 A EP 11189889A EP 2594688 A1 EP2594688 A1 EP 2594688A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
refrigerant
air stream
outlet
inlet
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
EP11189889.6A
Other languages
German (de)
English (en)
Other versions
EP2594688B1 (fr
Inventor
Francesco Cavarretta
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
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 Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to EP11189889.6A priority Critical patent/EP2594688B1/fr
Priority to PCT/EP2012/072690 priority patent/WO2013075997A1/fr
Priority to CN201280057032.4A priority patent/CN103946441B/zh
Publication of EP2594688A1 publication Critical patent/EP2594688A1/fr
Application granted granted Critical
Publication of EP2594688B1 publication Critical patent/EP2594688B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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 
    • 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

Definitions

  • the present invention relates to a laundry dryer with a heat pump system according to the preamble of claim 1.
  • the heat pump technology is in a laundry dryer the most efficient way to dry clothes by reduced energy consumption.
  • a conventional heat pump laundry dryer an air stream flows in a closed air stream circuit.
  • the air stream is moved by a fan and passes through a laundry drum removing water from wet clothes.
  • the air stream is cooled down and dehumidified in an evaporator or gas heater and heated up in a condenser or gas cooler.
  • the air stream is re-inserted into the laundry drum again.
  • the refrigerant is compressed by a compressor. Then, the refrigerant is condensed in the condenser or cooled down in the gas cooler. Next, the refrigerant is laminated in an expansion device. At last, the refrigerant is vaporized in the evaporator or heated up in the gas heater. If the refrigerant operates at the critical pressure, then it is cooled down in the gas cooler and heated up in the gas heater, respectively. The temperatures of the air stream and the refrigerant are strictly connected to each other.
  • the temperature of the air stream at an outlet of the evaporator is relative low, e.g. about 25°C.
  • the temperature of the air stream at an inlet of the laundry drum should be relative high, e.g. about 65°C, so that the condenser has to heat up the refrigerant with a relative high temperature difference.
  • the relationships between the temperatures of the air stream require heat exchangers with disadvantageous dimensions.
  • WO 2011/080045 A1 discloses a domestic appliance with a drying chamber and a heat pump circuit.
  • the heat pump circuit includes a liquefier, an evaporator and two additional heat exchangers.
  • the process air is heated by the liquefier and cooled by the evaporator.
  • the one additional heat exchanger cools the refrigerant and heats the process air.
  • the other additional heat exchanger undercools the condensate of the refrigerant and reduces the mass flow of the circulating refrigerant.
  • the heat pump circuit comprises a high number of components and a complicated control system.
  • the object of the present invention is achieved by the laundry dryer according to claim 1.
  • the additional heat exchanger on the one hand and the first heat exchanger or the second heat exchanger on the other hand are formed as one heat exchanger assembly including one air stream channel and at least one refrigerant channel.
  • the present invention provides the arrangement of the first or second heat exchanger and the additional heat exchanger within one physical heat exchanger assembly.
  • Said heat exchanger assembly includes one channel or at least two separate channels for the refrigerant, which penetrates or penetrate a channel for the air stream.
  • the channels for the refrigerant are connected to different parts of the refrigerant circuit, wherein the refrigerant has different thermal states.
  • the heat exchanger assembly containing the first or second heat exchanger and the additional heat exchanger reduces the complexity of the heat pump system.
  • the heat exchanger assembly comprises common fins and air stream channel between said fins and at least one refrigerant channel in thermal connection with the fins so as to define the first heat exchanger or the second heat exchanger and the additional heat exchanger side, the first heat exchanger or the second heat exchanger and the additional heat exchanger side share the common fins.
  • thee refrigerant channel passes through the common fins.
  • an inlet of the refrigerant channel is arranged at the second heat exchanger and an outlet of the refrigerant channel is arranged at the additional heat exchanger.
  • the inlet of the refrigerant channel is connected to the outlet of the expansion device and an outlet of the refrigerant channel is connected to the inlet outlet of the compressor.
  • At least a portion of the refrigerant channel extending between the inlet and the outlet, crosses the heat exchanger assembly so as to pass from the second heat exchanger to the additional heat exchanger.
  • the refrigerant circuit includes an internal heat exchanger, wherein a high pressure side of said internal heat exchanger is interconnected between the first heat exchanger and the expansion device and a low pressure side of said internal heat exchanger is interconnected between the second heat exchanger and the additional heat exchanger, so that the additional heat exchanger receives the refrigerant via said low pressure side of the internal heat exchanger.
  • a first refrigerant channel corresponds with the second heat exchanger and a second refrigerant channel corresponds with the additional heat exchanger, and wherein an inlet of the first refrigerant channel is connected to the outlet of the expansion device and an outlet of the first refrigerant channel is connected to an inlet of the low pressure side of the internal heat exchanger and an inlet of the second refrigerant channel is connected to an outlet of the low pressure side (of the internal heat exchanger and an outlet of the second refrigerant channel is connected the inlet of the compressor.
  • a first refrigerant channel corresponds with the additional heat exchanger and is part of the low pressure portion of the refrigerant circuit
  • the second refrigerant channel corresponds with the first heat exchanger and is part of the high pressure portion of the refrigerant circuit
  • the inlet of the first refrigerant channel is connected to the refrigerant outlet of the evaporator and the outlet of the first refrigerant channel is connected to the inlet of the compressor and the inlet of the second refrigerant channel is connected to the outlet of the compressor and the outlet of the second refrigerant channel is connected the inlet of the expansion device.
  • the inlet of the first refrigerant channel is connected to the outlet of the low pressure side of the internal heat exchanger and the outlet of the first refrigerant channel is connected to the inlet of the compressor and the inlet of the second refrigerant channel is connected to the outlet of the compressor and the outlet of the second refrigerant channel is connected the inlet of the high pressure side of the internal heat exchanger.
  • the refrigerant circuit comprises a by-pass line so that the refrigerant can completely or partially by-pass said additional heat exchanger.
  • the by-pass line includes at least one on-off valve for opening and closing said by-pass line or the by-pass line includes at least one control valve for a continuous opening of said by-pass line or the by-pass line includes at least one three-way valve for an alternating opening and closing of said by-pass line and a refrigerant side of the additional heat exchanger.
  • the by-pass line is controlled or controllable by the temperature of the refrigerant in at least one position of the refrigerant circuit or the by-pass line is controlled or controllable by the temperature of the air stream in at least one position of the air stream circuit.
  • the by-pass line is controlled or controllable by one of the following,
  • the first heat exchanger acts as a gas cooler, if the refrigerant remains in a gaseous state.
  • the first heat exchanger acts as a condenser, if the refrigerant at least partially transfers from the gaseous state to a liquid state.
  • the second heat exchanger acts as a gas heater, if the refrigerant remains in the gaseous state. Else, the second heat exchanger acts as an evaporator, if the refrigerant at least partially transfers from the liquid state to the gaseous state.
  • FIG 1 illustrates a schematic diagram of a heat pump system for a laundry dryer according to a first embodiment of the present invention.
  • the heat pump system includes a closed refrigerant circuit 10 and a drying air stream circuit 12.
  • the refrigerant circuit 10 includes a compressor 14, a condenser 16, an expansion device 18, an evaporator 20 and an additional heat exchanger 22.
  • the compressor 14, the condenser 16, the expansion device 18, the evaporator 20 and the additional heat exchanger 22 are switched in series and form a closed loop.
  • the air stream circuit 12 includes the evaporator 20, the additional heat exchanger 22, the condenser 16, an air stream fan 24 and a laundry treatment chamber 26, preferably a rotatable drum.
  • the air stream circuit 12 forms also a loop.
  • the refrigerant is compressed by the compressor 14 and condensed by the condenser 16.
  • the refrigerant is laminated in the expansion device 18 and vaporized in the evaporator 20.
  • the refrigerant is cooled down by the additional heat exchanger 22 and sucked by the compressor 14.
  • the drying air stream is driven by the air stream fan 24 and passes through the laundry drum 26 removing water from wet laundry.
  • the drying air stream is cooled down and dehumidified by the evaporator 20 and pre-heated by the additional heat exchanger 22.
  • the drying air stream is heated up in the condenser 16 and re-inserted into the laundry drum 26 again.
  • the additional heat exchanger 22 is arranged inside the air stream circuit between the evaporator 20 and the condenser 16.
  • the refrigerant and the drying air stream are thermally coupled by the additional heat exchanger 22, by the evaporator 20 and condenser 16.
  • the additional heat exchanger 22 is arranged between a refrigerant outlet of the evaporator 20 and an inlet of the compressor 14.
  • the refrigerant from the evaporator 20 is cooled down by the additional heat exchanger 22 before being sucked by the compressor 14, while the drying air stream is pre-heated by said additional heat exchanger 22.
  • the drying air stream is cooled down in order to be dehumidified, while the refrigerant is vaporized and heated, preferably superheated, therein.
  • the temperature of the air stream at an air stream outlet of the laundry drum 26 and at an air stream inlet of the evaporator 20, respectively is about 40°C, for instance.
  • the temperature of the air stream at an air stream outlet of the evaporator 20 is about 25°C, for example.
  • the refrigerant enters the evaporator at a temperature of about 20°C and is superheated by the evaporator up to about 35°C, for instance.
  • the air stream is pre-heated in the additional heat exchanger 22 by said superheated refrigerant.
  • the temperature of the air stream at an air stream outlet of the condenser 16 and an air stream inlet of the laundry drum 26, respectively, is about 65°C, for instance.
  • the additional heat exchanger 22 supports the condenser 16 in heating up the air stream.
  • the additional heat exchanger 22 has the advantage that a higher heating power is transferred to the air stream, so that a warming up phase of the heat pump system is shorten. Further, the air stream can reach a higher temperature during a steady state phase of the heat pump system. Moreover, the temperature of the refrigerant at the inlet of the compressor 14 is lower, so that the power required by the compressor 14 decreases, if the other parameters are assumed being constant.
  • FIG 2 illustrates a schematic diagram of the heat pump system for the laundry dryer according to a second embodiment of the present invention.
  • the heat pump system of the second embodiment comprises the same components as the heat pump system of the first embodiment. Additionally, the refrigerant circuit 10 of the second embodiment comprises a by-pass line 28.
  • the by-pass line 28 is arranged, preferably, in parallel to the additional heat exchanger 22.
  • the by-pass line 28 allows that the refrigerant can completely or partially by-pass the additional heat exchanger 22.
  • a too low temperature of the refrigerant at the outlet of the compressor is avoided. Said too low temperature would provide, that the drying air stream cannot be heated up to desired levels.
  • the by-pass line 28 is switchable by one or more valves.
  • the valves are not shown in FIG 2 .
  • the pass line 28 comprises a pair of on-off valves arranged at the end portions of said by-pass line 28.
  • the by-pass line 28 is switchable by only one on-off valve.
  • the pass line 28 comprises a pair of control valves arranged at the end portions of said by-pass line 28, wherein the control valves can be opened completely or partially.
  • the by-pass line 28 is switchable by only one control valve.
  • the pass line 28 may comprise a three-away valve.
  • FIG 3 illustrates a schematic diagram of the heat pump system for the laundry dryer according to a third embodiment of the present invention.
  • the heat pump system of the third embodiment comprises the same components as the heat pump system of the first embodiment. Additionally, the refrigerant circuit 10 of the third embodiment comprises an internal heat exchanger 30.
  • the internal heat exchanger 30 acts only within the refrigerant circuit 10.
  • the refrigerant circuit 10 couples thermally a high pressure portion and a low pressure portion of the refrigerant circuit 10.
  • the high pressure portion extends from the outlet of the compressor 14 via the condenser 16 to the inlet of the expansion device 18.
  • the low pressure portion extends from the outlet of the expansion device 18 via the evaporator 20 and the additional heat exchanger 22 to the inlet of the compressor 14.
  • the internal heat exchanger 30 comprises a high pressure side 32 and a low pressure side 34.
  • the high pressure side 32 corresponds with the high pressure portion of the refrigerant circuit 10.
  • the low pressure side 34 corresponds with the low pressure portion of the refrigerant circuit 10.
  • the refrigerant from the outlet of the evaporator 20 is heated up in the low pressure side 34 of the internal heat exchanger 30. Then, the refrigerant is cooled down in the additional heat exchanger 22.
  • the internal heat exchanger 30 allows that the air stream in the additional heat exchanger 22 is heated up more as in the first and second embodiment without reaching the too low temperature level of the refrigerant at the inlet of the compressor 14.
  • FIG 4 illustrates a schematic diagram of the heat pump system for the laundry dryer according to a fourth embodiment of the present invention.
  • the heat pump system of the fourth embodiment comprises the same components as the heat pump system of the third embodiment.
  • the refrigerant circuit 10 of the third embodiment comprises the by-pass line 28.
  • the fourth embodiment is a combination of the second and third embodiment.
  • the by-pass line 28 is, preferably, arranged in parallel to the additional heat exchanger 22.
  • the by-pass line 28 allows that the refrigerant can completely or partially pass by the additional heat exchanger 22.
  • the refrigerant flows through the by-pass line 28 and by-passes the additional heat exchanger 22, then the too low temperature of the refrigerant at the outlet of the compressor is avoided.
  • the by-pass line 28 is also switchable by one or more valves.
  • the valves are not shown in FIG 4 .
  • the pass line 28 comprises a pair of on-off valves arranged at the end portions of said by-pass line 28.
  • the by-pass line 28 is switchable by only one on-off valve.
  • the pass line 28 comprises the pair of control valves arranged at the end portions of said by-pass line 28, wherein the control valves can be opened completely or partially.
  • the by-pass line 28 is switchable by only one control valve.
  • the pass line 28 may comprise a three-away valve.
  • the low pressure side 34 of the internal heat exchanger 30 is arranged downstream of the additional heat exchanger 22. After the refrigerant has been cooled down by the air stream in the additional heat exchanger 22, is heated up in the low pressure side 34 of the internal heat exchanger 30, so that the too low temperature levels at the inlet and outlet of the compressor 14 are avoided.
  • This embodiment preferably, does not require the by-pass line 28, since the position of the low pressure side 34 of the internal heat exchanger 30 ensures the appropriate temperature levels at the inlet and outlet of the compressor 14.
  • the valve or valves of the by-pass line 28 may be controlled in dependence of the temperature levels of the air stream and/or the refrigerant.
  • the evaporator 20 may be flooded or the refrigerant may be superheated, i.e. the temperature of the refrigerant at the refrigerant outlet of the evaporator 20 could be lower than the temperature of the air stream.
  • the refrigerant cannot heat up the air stream in the additional heat exchanger 22 and passes by said additional heat exchanger 22.
  • the by-pass line 28 is opened and the additional heat exchanger 22 does not work, if
  • the additional heat exchanger 22 may be by-passed, if the air stream at the inlet of the laundry drum 26 cannot be kept at a higher level. This situation could occur at the beginning of the steady state phase. If the temperature of the refrigerant at the refrigerant inlet or outlet of the evaporator 20 or the refrigerant outlet of the condenser 16 is higher than a predetermined level corresponding to the beginning of the drying cycle and at the same time the temperature of the air stream at the inlet of the laundry drum 26 or the temperature of the refrigerant at the outlet of the compressor 14 is lower than another predetermined level, then the additional heat exchanger 22 may be passed by completely or partially. When the air stream reaches the desired value, then the additional heat exchanger 22 is activated again. Thus, the additional heat exchanger 22 works in an on-off mode.
  • FIG 5 shows a schematic diagram of the heat pump system for the laundry dryer according to a fifth embodiment of the present invention.
  • the fifth embodiment differs from the first embodiment in that the evaporator 20 and the additional heat exchanger 22 are formed by a heat exchanger assembly 36.
  • Said heat exchanger assembly 36 comprises common fins 38 and one refrigerant channel 44 in thermal connection with the fins 38 so as to define an evaporator side 20 for cooling down the air stream and heating up the refrigerant and an additional heat exchanger side 22 for pre-heating the air stream and cooling down the refrigerant.
  • FIG 6 shows a schematic diagram of a heat exchanger assembly 36 for the heat pump system according to the fifth embodiment of the present invention.
  • the heat exchanger assembly 36 comprises a plurality of fins 38.
  • the heat exchanger assembly 36 comprises a common air stream channel 40 for the evaporator 20 and the additional heat exchanger 22, wherein the air stream channel 40 passes at first the evaporator 20 and then the additional heat exchanger 22.
  • the refrigerant channel 42 penetrates the air stream channel 40 and is in thermal connection with the fins, preferably the refrigerant channel 42 passes through the common fins 38.
  • the refrigerant channel 42 is, preferably, a serpentine.
  • An inlet 48 of the refrigerant channel 42 is connected to the outlet of the expansion device 18.
  • An outlet 50 of the refrigerant channel 42 is connected to the inlet outlet of the compressor 14.
  • the inlet 48 of the refrigerant channel 42 is arranged at the evaporator side of the heat exchanger assembly and the outlet 50 of the refrigerant channel 42 is arranged at the additional heat exchanger side the heat exchanger assembly.
  • the air stream is cooled down and dehumidified.
  • the air stream is pre-heated.
  • the refrigerant is vaporized and superheated.
  • the refrigerant is cooled down.
  • FIG 7 shows a schematic diagram of the heat pump system for the laundry dryer according to a sixth embodiment of the present invention.
  • the sixth embodiment differs from the third embodiment in that the evaporator 20 and the additional heat exchanger 22 are formed by the heat exchanger assembly 36.
  • Said heat exchanger assembly 36 comprises common fins 38 and two refrigerant channels 44,46 in thermal connection with the fins 38 so as to define an evaporator side 20 for cooling down the air stream and heating up the refrigerant and an additional heat exchanger side 22 for pre-heating the air stream and cooling down the refrigerant.
  • FIG 8 shows a schematic diagram of the heat exchanger assembly 36 for the heat pump system according to the sixth embodiment of the present invention.
  • the heat exchanger assembly 36 comprises the plurality of fins 38 and the air stream channel 40 between said fins 38.
  • the air stream channel 40 passes at first the evaporator 20 side and then the additional heat exchanger 22 side of the heat exchanger assembly 36.
  • a first refrigerant channel 44 and a second refrigerant channel 46 penetrate the air stream channel 40.
  • the first refrigerant channel 44 and the second refrigerant channel 46 are, preferably, serpentine.
  • the first refrigerant channel 44 in FIG 8 corresponds with the evaporator 20 side of the heat exchanger assembly 36.
  • the second refrigerant channel 46 in FIG 8 corresponds with the additional heat exchanger 22 side of the of the heat exchanger assembly 36.
  • An inlet 52 of the first refrigerant channel 44 is connected to the outlet of the expansion device 18.
  • An outlet 54 of the first refrigerant channel 44 is connected to an inlet of the low pressure side 34 of the internal heat exchanger 30.
  • An inlet 56 of the second refrigerant channel 46 is connected to an outlet of the low pressure side 34 of the internal heat exchanger 30.
  • An outlet 58 of the second refrigerant channel 46 is connected the inlet of the compressor 14.
  • the refrigerant passes the low pressure side 34 of the internal heat exchanger 30.
  • FIG 9 shows a schematic diagram of the heat pump system for the laundry dryer according to a seventh embodiment of the present invention.
  • the seventh embodiment differs from the first embodiment in that the additional heat exchanger 22 and the condenser 16 are formed by the heat exchanger assembly 36.
  • Said heat exchanger assembly 36 comprises common fins 38 and two refrigerant channels 44,46 in thermal connection with the fins 38 so as to define an additional heat exchanger side 22 for pre-heating the air stream and cooling down the refrigerant and a condenser side 16 for heating up the air stream and cooling down the refrigerant.
  • FIG 10 shows a schematic diagram of the heat exchanger assembly 36 for the heat pump system according to the seventh embodiment of the present invention.
  • the heat exchanger assembly 36 comprises the plurality of fins 38.
  • the heat exchanger assembly 36 comprises the common air stream channel 40 for the additional heat exchanger side 22 and the condenser side 16, wherein the air stream channel 40 passes at first the additional heat exchanger 22 and the condenser 16.
  • the first refrigerant channel 44 preferably a serpentine
  • the second refrigerant channel 46 preferably a serpentine
  • the first refrigerant channel 44 in FIG 10 corresponds with the additional heat exchanger side 22.
  • the second refrigerant channel 46 in FIG 10 corresponds with the condenser side 16.
  • the refrigerant circuit 10 is subdivided into a high pressure portion and a low pressure portion.
  • the high pressure portion extends from the outlet of the compressor 14 via the condenser 16 to the inlet of the expansion device 18.
  • the low pressure portion extends from the outlet of the expansion device 18 via the evaporator 20 to the inlet of the compressor 14.
  • the first refrigerant channel 44 is part of the low pressure portion of the refrigerant circuit
  • the second refrigerant channel 46 is part of the high pressure portion of the refrigerant circuit.
  • the inlet 52 of the first refrigerant channel 44 is connected to the refrigerant outlet of the evaporator 20.
  • the outlet 54 of the first refrigerant channel 44 is connected to the inlet of the compressor 14.
  • the inlet 56 of the second refrigerant channel 46 is connected to the outlet of the compressor 14.
  • the outlet 58 of the second refrigerant channel 46 is connected the inlet of the expansion device 18.
  • the drying air stream is pre-heated, while the refrigerant is cooled down.
  • the condenser side 16 the refrigerant is cooled down, while the air stream is warmed up. Additionally, the thermal conductivity of the fins 38 allows that the refrigerant flowing into the additional heat exchanger side 22 cools down the refrigerant flowing into the condenser side 16. Conversely, the refrigerant flowing into the condenser 16 heats up the refrigerant flowing into the additional heat exchanger 22, thus improving the efficiency of the heat pump system.
  • FIG 11 shows a schematic diagram of the heat pump system for the laundry dryer according to an eighth embodiment of the present invention.
  • the eighth embodiment differs from the third embodiment in that the additional heat exchanger 22 and the condenser 16 are formed by the heat exchanger assembly 36.
  • Said heat exchanger assembly 36 comprises common fins 38 and two refrigerant channels 44,46 in thermal connection with the fins 38 so as to define the additional heat exchanger side 22 for pre-heating the air stream and cooling down the refrigerant and the condenser side 16 for heating up the air stream and cooling down the refrigerant.
  • FIG 12 shows a schematic diagram of the heat exchanger assembly for the heat pump system according to the eighth embodiment of the present invention.
  • the heat exchanger assembly 36 comprises the common air stream channel 40 for the additional heat exchanger side 22 and the condenser side 16, wherein the air stream channel 40 passes at first the additional heat exchanger 22 and the condenser 16.
  • the first refrigerant channel 44 preferably a serpentine
  • the second refrigerant channel 46 preferably a serpentine
  • the first refrigerant channel 44 in FIG 12 corresponds with the additional heat exchanger side 22.
  • the second refrigerant channel 46 in FIG 12 corresponds with the condenser side 16.
  • the first refrigerant channel 44 is part of the low pressure portion of the refrigerant circuit, whereas the second refrigerant channel 46 is part of the high pressure portion of the refrigerant circuit.
  • the inlet 52 of the first refrigerant channel 44 is connected to the outlet of the low pressure side 34 of the internal heat exchanger 30.
  • the outlet 54 of the first refrigerant channel 44 is connected to the inlet of the compressor 14.
  • the inlet 56 of the second refrigerant channel 46 is connected to the outlet of the compressor 14.
  • the outlet 58 of the second refrigerant channel 46 is connected the inlet of the high pressure side 32 of the internal heat exchanger 30.
  • the air stream is pre-heated, while the refrigerant is cooled down.
  • the refrigerant is cooled down, while the air stream is warmed up.
  • the heat exchanger assembly 36 is realized by one single component.
  • Said single component is an air-to-liquid heat exchanger including one channel for the air stream and one, two or more channels for the refrigerant. The net result is favourable to an efficient heating up of the air stream.
  • the refrigerant e.g. carbon dioxide
  • the refrigerant circuit 10 If the refrigerant, e.g. carbon dioxide, operates at least at the critical pressure in the low pressure portion of the refrigerant circuit 10, then the refrigerant remains always in the gaseous state. In this case, no evaporation occurs and the evaporator 20 acts as a gas heater.
  • the air stream circuit 12 is a closed loop, in which the air stream flows continuously through the laundry drum 26.
  • a part of the air stream may be exhausted from the air stream circuit 12.
  • the exhausted air may be replaced by fresh air, e.g. ambient air.
  • the exhausted air and fresh air form a smaller part of the air stream.
  • the air stream circuit 12 may be temporarily opened, wherein the time of the open air stream circuit 12 is a small part of the total processing time. In any case, at least a part of the air stream passes always the condenser 16 after having passed the evaporator 20.
  • the heat pump system with the additional heat exchanger 22 and optionally the internal heat exchanger 30 allows a reduction of the drying time and improves the performance of the heat pump dryer.
  • an auxiliary condenser can be provided in the refrigerant circuit, particularly between the main condenser 16 and the expansion device 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP11189889.6A 2011-11-21 2011-11-21 Sèche-linge avec système de pompe à chaleur Active EP2594688B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP11189889.6A EP2594688B1 (fr) 2011-11-21 2011-11-21 Sèche-linge avec système de pompe à chaleur
PCT/EP2012/072690 WO2013075997A1 (fr) 2011-11-21 2012-11-15 Sèche-linge équipé d'un système de pompe à chaleur
CN201280057032.4A CN103946441B (zh) 2011-11-21 2012-11-15 具有热泵系统的衣物干燥机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11189889.6A EP2594688B1 (fr) 2011-11-21 2011-11-21 Sèche-linge avec système de pompe à chaleur

Publications (2)

Publication Number Publication Date
EP2594688A1 true EP2594688A1 (fr) 2013-05-22
EP2594688B1 EP2594688B1 (fr) 2016-08-31

Family

ID=47221383

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11189889.6A Active EP2594688B1 (fr) 2011-11-21 2011-11-21 Sèche-linge avec système de pompe à chaleur

Country Status (3)

Country Link
EP (1) EP2594688B1 (fr)
CN (1) CN103946441B (fr)
WO (1) WO2013075997A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9683325B2 (en) 2014-10-28 2017-06-20 Lg Electronics Inc. Clothes treating apparatus

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106245266A (zh) * 2016-08-30 2016-12-21 无锡小天鹅股份有限公司 衣物烘干系统和具有其的干衣机、洗干一体机
CN108468193B (zh) * 2018-04-28 2023-12-19 海信冰箱有限公司 一种热泵干衣机
DE102019214687A1 (de) * 2019-09-25 2021-03-25 BSH Hausgeräte GmbH Gerät zum Trocknen von Wäsche und Verfahren zum Betreiben eines solchen Geräts

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006018205U1 (de) * 2006-11-06 2007-02-15 V-Zug Ag Wäschetrockner mit Zusatzwärmetauscher
WO2009016173A1 (fr) * 2007-08-02 2009-02-05 Arcelik Anonim Sirketi Machine à laver/sécheuse
EP2261416A1 (fr) * 2009-06-09 2010-12-15 Electrolux Home Products Corporation N.V. Échangeur thermique pour séchoir, spécialement pour un séchoir domestique
WO2011080045A1 (fr) 2009-12-22 2011-07-07 BSH Bosch und Siemens Hausgeräte GmbH Appareil domestique doté d'un circuit de pompe à chaleur
EP2385169A1 (fr) * 2010-05-03 2011-11-09 Electrolux Home Products Corporation N.V. Machine à laver avec système de pompe à chaleur et procédé de fonctionnement de la machine à laver

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005253588A (ja) * 2004-03-10 2005-09-22 Sanyo Electric Co Ltd 乾燥機
JP2009006126A (ja) * 2007-05-31 2009-01-15 Panasonic Corp 衣類乾燥装置
JP5121659B2 (ja) * 2008-10-08 2013-01-16 株式会社東芝 洗濯乾燥機

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006018205U1 (de) * 2006-11-06 2007-02-15 V-Zug Ag Wäschetrockner mit Zusatzwärmetauscher
WO2009016173A1 (fr) * 2007-08-02 2009-02-05 Arcelik Anonim Sirketi Machine à laver/sécheuse
EP2261416A1 (fr) * 2009-06-09 2010-12-15 Electrolux Home Products Corporation N.V. Échangeur thermique pour séchoir, spécialement pour un séchoir domestique
WO2011080045A1 (fr) 2009-12-22 2011-07-07 BSH Bosch und Siemens Hausgeräte GmbH Appareil domestique doté d'un circuit de pompe à chaleur
EP2385169A1 (fr) * 2010-05-03 2011-11-09 Electrolux Home Products Corporation N.V. Machine à laver avec système de pompe à chaleur et procédé de fonctionnement de la machine à laver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9683325B2 (en) 2014-10-28 2017-06-20 Lg Electronics Inc. Clothes treating apparatus

Also Published As

Publication number Publication date
CN103946441B (zh) 2016-12-14
CN103946441A (zh) 2014-07-23
WO2013075997A1 (fr) 2013-05-30
EP2594688B1 (fr) 2016-08-31

Similar Documents

Publication Publication Date Title
EP2489774B1 (fr) Sèche-linge à pompe à chaleur
US9976242B2 (en) Clothes treating apparatus with a heat pump cycle
CN110055730B (zh) 一种热泵干衣机及控制方法
KR101989522B1 (ko) 의류건조기
US9146056B2 (en) Laundry treating apparatus having expansion valve which is variable according to the driving mode
EP2468947B1 (fr) Système de pompe à chaleur pour sèche-linge et procédé de fonctionnement d'un système de pompe à chaleur de sèche-linge
US10662575B2 (en) Clothes dryer and method for controlling same
EP2385169A1 (fr) Machine à laver avec système de pompe à chaleur et procédé de fonctionnement de la machine à laver
WO2008116726A3 (fr) Sèche-linge à condensation et procédé permettant de faire fonctionner un sèche-linge à condensation
EP2594688B1 (fr) Sèche-linge avec système de pompe à chaleur
EP2551401A1 (fr) Système de pompe à chaleur pour sèche-linge
CN105316920B (zh) 干衣机和干衣机热泵系统及其控制方法
EP2796613A1 (fr) Sèche-linge ou lave-linge sèche-linge et procédé pour son fonctionnement
EP2312049B1 (fr) Sèche-linge avec système de pompe à chaleur
EP2540905B1 (fr) Sèche-linge avec système de pompe à chaleur
EP2551402A1 (fr) Système de pompe à chaleur pour sèche-linge
EP2586905B1 (fr) Sèche-linge avec système de pompe à chaleur
EP2586907B1 (fr) Sèche-linge avec système de pompe à chaleur et recirculation d'air
CN105222422B (zh) 两重热交换制冷循环系统
EP2716807A1 (fr) Sèche-linge à pompe à chaleur et procédé de fonctionnement du sèche-linge doté de la pompe à chaleur
KR200405760Y1 (ko) 난방성능을 높인 열교환장치
EP2540906B1 (fr) Échangeur thermique pour système de pompe thermique dans un appareil domestique
TWM417516U (en) Heat cycle control device for dryer

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

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

17P Request for examination filed

Effective date: 20131122

RBV Designated contracting states (corrected)

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

17Q First examination report despatched

Effective date: 20150724

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20160419

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: CH

Ref legal event code: EP

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602011029780

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 825078

Country of ref document: AT

Kind code of ref document: T

Effective date: 20161015

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: 20160831

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 825078

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160831

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

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: 20160831

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: 20161130

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: 20160831

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: 20160831

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: 20160831

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

Ref country code: BE

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

Effective date: 20161130

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: 20160831

Ref country code: ES

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: 20160831

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: 20160831

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: 20160831

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: 20160831

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: 20161201

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

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: 20160831

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: 20160831

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

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: 20161130

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: 20160831

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: 20160831

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: 20160831

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: 20170102

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: 20160831

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: 20160831

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: 20160831

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602011029780

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

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

Effective date: 20161130

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

Ref country code: CH

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

Effective date: 20161130

Ref country code: LI

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

Effective date: 20161130

26N No opposition filed

Effective date: 20170601

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20170731

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: 20160831

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: 20161130

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

Ref country code: FR

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

Effective date: 20161130

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: 20161130

Ref country code: IE

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

Effective date: 20161121

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: 20160831

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: 20111121

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: 20160831

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: 20160831

Ref country code: TR

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: 20160831

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: 20160831

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: 20161121

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: 20160831

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

Ref country code: IT

Payment date: 20221124

Year of fee payment: 12

Ref country code: DE

Payment date: 20221123

Year of fee payment: 12

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230625