EP2703551B1 - Système de refroidissement pour un sécheur à pompe à chaleur et sécheur à pompe à chaleur utilisant ce système de refroidissement - Google Patents

Système de refroidissement pour un sécheur à pompe à chaleur et sécheur à pompe à chaleur utilisant ce système de refroidissement Download PDF

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Publication number
EP2703551B1
EP2703551B1 EP12182905.5A EP12182905A EP2703551B1 EP 2703551 B1 EP2703551 B1 EP 2703551B1 EP 12182905 A EP12182905 A EP 12182905A EP 2703551 B1 EP2703551 B1 EP 2703551B1
Authority
EP
European Patent Office
Prior art keywords
condenser
heat pump
cooling system
pump drier
evaporator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP12182905.5A
Other languages
German (de)
English (en)
Other versions
EP2703551A1 (fr
Inventor
Paolo Sicher
Matteo Parnisari
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.)
Whirlpool Corp
Original Assignee
Whirlpool Corp
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 Whirlpool Corp filed Critical Whirlpool Corp
Priority to EP12182905.5A priority Critical patent/EP2703551B1/fr
Priority to PL12182905T priority patent/PL2703551T3/pl
Publication of EP2703551A1 publication Critical patent/EP2703551A1/fr
Application granted granted Critical
Publication of EP2703551B1 publication Critical patent/EP2703551B1/fr
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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
    • 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
    • D06F2105/26—Heat pumps

Definitions

  • the present invention relates to a cooling system for a heat pump drier, comprising a refrigeration circuit including a compressor, a condenser and an evaporator.
  • the present invention relates also to a heat pump drier having such cooling system as well.
  • This type of cooling system is used in recent driers due to the increased energy efficiency obtained though a heat pump.
  • the cooling system is not only used to remove water by condensation on evaporator surface from the warm air downstream the drier drum, but also for heating air upstream the drier drum thanks to the heat released by the condenser of the cooling system.
  • WO 2009/016173 A1 discloses a heat pump washer/dryer having a valve and throttle elements between the condenser and the evaporator of the heat pump circuit in order to maintain different levels of pressure and temperature decreases of the refrigerant fluid.
  • An object of the invention is to present a cooling system of the type mentioned above which does not present the above problems. Such object is obtained thanks to features listed in the appended claims.
  • One of the features of the invention is to create a by-pass of a portion of the condenser, so that condenser heat exchange performances are reduced or increased simply by driving an electro-valve which directs the flow of refrigerant fluid through the by-pass or through the entire condenser.
  • electro-valve deviates refrigerant flow in order to by-pass part of the condenser pipes.
  • electrovalve deviates refrigerant flow in order to include all condenser pipes. In this way cost and complexity compared to present solution are greatly reduced.
  • a heat pump drier having a drum 12 in which laundry to be dried is loaded.
  • a process air circuit 14 comprises conduits for conveying air (through the driving action of a blower - not shown) from the drum to a series of heat exchangers 16, 18 and 20 before entering again the drum 12.
  • the drier 10 comprises also a refrigeration circuit 22 having a compressor 24, a condenser 26 and an evaporator 28.
  • the condenser 26 is preferably part of the heat exchanger 18, while the evaporator 28 is part of the heat exchanger 16.
  • the third heat exchanger 20 upstream the drum 12 air is heated by an electric heater (not shown) in case the heat exchanger 18 cannot guarantee the desired temperature of air entering the drum 12.
  • the condenser 26 is cooled by a fan 30 which is switched on or off depending on the thermal balance of the drier.
  • the refrigeration circuit comprises also a filter 17 and a capillary 19 upstream the evaporator 28.
  • a three-way valve 32 upstream the condenser in the refrigeration circuit 22 it is placed a three-way valve 32 which can direct the flow of refrigerant towards the condenser or toward a by-bass pipe 34 which is connected to a predetermined portion of the condenser 26, i.e. at a predetermined distance from the inlet point.
  • the temperature sensor 36 is placed at the outlet of the condenser 26 upstream the capillary inlet, but it can be placed in a different position as well.

Landscapes

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

Claims (8)

  1. Système de refroidissement pour un sécheur à pompe à chaleur, comprenant un circuit de réfrigération (22) comportant un compresseur (24), un condenseur (26) et un évaporateur (28), caractérisé en ce que ledit circuit de réfrigération (22) comprend une soupape de dérivation (32) en amont du condenseur (26) et qui est à même de dériver une partie des tuyaux du condenseur (26).
  2. Système de refroidissement selon la revendication 1, dans lequel la soupape de dérivation est une soupape à trois voies raccordée à un conduit de dérivation (34) qui pénètre dans le condenseur (26) à une distance prédéterminée du point d'entrée.
  3. Sécheur à pompe à chaleur (10) comprenant un tambour (12), un circuit d'air de traitement (14) pour faire circuler de l'air à travers le tambour (12) et un système de refroidissement ayant un circuit de réfrigération (22) avec un compresseur (24), un condenseur (26) et un évaporateur (28), caractérisé en ce qu'il comprend un système de refroidissement ayant les caractéristiques de la revendication 1.
  4. Sécheur à pompe à chaleur (10) selon la revendication 3, dans lequel la soupape de dérivation est une soupape à trois voies raccordée à un conduit de dérivation (34) qui pénètre dans le condenseur (26) à une distance prédéterminée du point d'entrée.
  5. Sécheur à pompe à chaleur selon la revendication 3 ou la revendication 4, dans lequel le circuit d'air de traitement (14) comprend une portion (16) en aval du tambour (12) en relation d'échange de chaleur avec l'évaporateur (28).
  6. Sécheur à pompe à chaleur selon la revendication 5, dans lequel le circuit d'air de traitement (14) comprend une portion (18) en amont du tambour (12) en relation d'échange de chaleur avec le condenseur (26).
  7. Sécheur à pompe à chaleur selon l'une quelconque des revendications 3 à 6, dans lequel le circuit de réfrigération (22) comprend un capteur de température (36) raccordé à une unité de commande (35) pour commander la soupape de dérivation (32).
  8. Sécheur à pompe à chaleur selon la revendication 7, dans lequel le capteur de température (36) est placé en aval du condenseur (26) et en amont de l'évaporateur (28).
EP12182905.5A 2012-09-04 2012-09-04 Système de refroidissement pour un sécheur à pompe à chaleur et sécheur à pompe à chaleur utilisant ce système de refroidissement Active EP2703551B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12182905.5A EP2703551B1 (fr) 2012-09-04 2012-09-04 Système de refroidissement pour un sécheur à pompe à chaleur et sécheur à pompe à chaleur utilisant ce système de refroidissement
PL12182905T PL2703551T3 (pl) 2012-09-04 2012-09-04 Układ chłodzenia dla suszarki z pompą ciepła oraz suszarka z pompą ciepła wykorzystująca taki układ chłodzenia

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12182905.5A EP2703551B1 (fr) 2012-09-04 2012-09-04 Système de refroidissement pour un sécheur à pompe à chaleur et sécheur à pompe à chaleur utilisant ce système de refroidissement

Publications (2)

Publication Number Publication Date
EP2703551A1 EP2703551A1 (fr) 2014-03-05
EP2703551B1 true EP2703551B1 (fr) 2015-01-28

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EP12182905.5A Active EP2703551B1 (fr) 2012-09-04 2012-09-04 Système de refroidissement pour un sécheur à pompe à chaleur et sécheur à pompe à chaleur utilisant ce système de refroidissement

Country Status (2)

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EP (1) EP2703551B1 (fr)
PL (1) PL2703551T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014223569A1 (de) 2014-11-19 2016-05-19 BSH Hausgeräte GmbH Wäschetrocknungsgerät und Verfahren zum Betreiben eines Wäschetrocknungsgeräts
CN108425222B (zh) * 2017-02-13 2021-09-07 青岛海尔洗涤电器有限公司 一种节能干衣机

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3306455B2 (ja) * 1993-03-04 2002-07-24 株式会社日立製作所 空気調和装置
CN100453922C (zh) * 2004-04-09 2009-01-21 松下电器产业株式会社 干燥装置
ES2352637T3 (es) * 2007-08-02 2011-02-22 Arçelik Anonim Sirketi Lavadora/secadora.

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EP2703551A1 (fr) 2014-03-05
PL2703551T3 (pl) 2015-04-30

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