EP2336686A2 - Betriebsverfahren für Kühlgeräte - Google Patents

Betriebsverfahren für Kühlgeräte Download PDF

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Publication number
EP2336686A2
EP2336686A2 EP10193890A EP10193890A EP2336686A2 EP 2336686 A2 EP2336686 A2 EP 2336686A2 EP 10193890 A EP10193890 A EP 10193890A EP 10193890 A EP10193890 A EP 10193890A EP 2336686 A2 EP2336686 A2 EP 2336686A2
Authority
EP
European Patent Office
Prior art keywords
arrangement
cooling member
damper
cooling
chamber
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.)
Withdrawn
Application number
EP10193890A
Other languages
English (en)
French (fr)
Inventor
Bora Kayikci
Murat Kayikci
Alperen Gazioglu
Fatih Muminoglu
Mustafa Pekguzelsu
Mahir Erdem Deger
Tekin Karayilan
Oner Aktas
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.)
Vestel Beyaz Esya Sanayi ve Ticaret AS
Original Assignee
Vestel Beyaz Esya Sanayi ve Ticaret 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 Vestel Beyaz Esya Sanayi ve Ticaret AS filed Critical Vestel Beyaz Esya Sanayi ve Ticaret AS
Publication of EP2336686A2 publication Critical patent/EP2336686A2/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/045—Air flow control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F25D21/065—Removing frost by mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F25D21/08—Removing frost by electric heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature
    • F25D2700/121—Sensors measuring the inside temperature of particular compartments

Definitions

  • This invention relates to a method of operation the damper and fan members which are in connection with a cooling member in cooling devices with defrost capability.
  • the most common problem encountered in the operation of cooling devices used in storing foodstuffs is frost formation on cooling members, e.g. evaporators, employed for the cooling operation.
  • the ambient humidity in the chamber where the cooling member is situated leads to frost formation thereon and reduces the cooling efficiency thereof. For this reason, the frost on the cooling member must be removed, i.e. it has to be defrosted.
  • the defrost operation either the cooling device is shut down, or a heating member disposed on the cooling member is used for this purpose. In both cases, the temperature in the cooling device and therefore the temperature of foodstuff stored therein are raised up accordingly. This causes a greater problem particularly for the foodstuff stored in the device.
  • damper arrangements are employed separating the chamber where the cooling member is situated from these compartments. Damper arrangements close some airflow channels to avoid air transfer to said compartments during a defrost operation. Evaporated humid air, however, also condenses on the movable parts of damper arrangements and interfere their proper operation.
  • the cooling device comprises at least one compartment where foodstuffs are stored; at least one cooling member; a fan arrangement transferring the air it sucks from the cooling member to said storage compartment; a cooling member chamber in which a damper arrangement is situated that opens/closes an airflow channel between said chamber and the storage compartment; at least one heating member on the cooling member for the defrost operation, and a control unit for the device.
  • the damper is operated periodically so that any ice thereon is broken down and that the damper in the arrangement opens the airflow channel after a certain time following the completion of the defrost operation.
  • the object of this invention is to develop an operation method for a damper arrangement that closes the section between the chamber where the cooling member is situated and the compartment where foodstuff is stored during a defrost operation.
  • Another object of this invention is to avoid any frost formation on the damper arrangement with the method developed.
  • a further object of this invention is to avoid the condensation of water from humid air at undesired places in a cooling device by operating a fan arrangement after humid air therein drops down to a certain level following a defrost operation.
  • Still a further object of this invention is to maintain the temperature equilibrium of the foodstuff storage compartment during and after a defrost operation and so to provide energy saving.
  • Yet a further object of this invention is to implement an easily-applicable and reliable operation method for cooling devices.
  • Figure 1 is a cross-sectional illustration of a cooling device.
  • FIG 1 gives a cross-sectional view of a cooling device (A).
  • the cooling device (A) comprises at least one compartment (2) for storing foodstuff (the compartments (2) illustratively shown in Figure 1 can be used as a freezer compartment and cooler compartment) and at least one cooling member (4).
  • the cooling member (4) may be in the form of an evaporator used together with a compressor (7) and condenser (6), or of a thermoelectric cooler (e.g. Peltier).
  • the device (A) is further provided with a cooling member chamber (1), in which are disposed said cooling member (4), a fan arrangement (5) transferring the air it sucks from said member (4) to the storage compartment (2), and a damper arrangement (8) opening/closing an airflow channel (10) between the chamber and the storage compartment (2).
  • Air coming from the chamber (1) of the cooling member is transferred to the storage compartment by the fan arrangement (5) either directly, or by means of at least one airflow channel (12) provided on at least one inner wall (11) in the storage compartment.
  • Frost formation sometimes occurs on the cooling member (4) provided in the device (A) and a defrost operation is used to remove this frost from the cooling member (4).
  • a defrost operation is used to remove this frost from the cooling member (4).
  • at least one heating member (not illustrated in figures) is used on the cooling member (4) so as to evaporate the frost.
  • the front of the airflow channel (10) is closed by a damper arrangement (8).
  • Frost formation on the cooling member (4) sometimes effects the damper arrangement as well. Under a normal operation condition of the device, frost formation can also occur on the damper arrangement (8), like the case of the cooling member (1). In addition to this, when the damper (9) closes the airflow channel, it becomes possible that water particles evaporated from the cooling member (1) condenses on the damper arrangement (8) and creates an ice layer thereon. Even if no ice formation occurs on the damper arrangement (8), it affects the operative functions of the damper arrangement, e.g. the damper (9) cannot open or close the channel (10).
  • the damper arrangement (8) is periodically operated during normal operation and/or defrost operation and the damper (9) opens/closes the channel (10), thereby breaking down any low amount of ice formed on the arrangement (8). In this manner, ice accumulation on the damper arrangement (8) is prevented so that its negative effect on the arrangement (8), i.e. rendering the latter nonfunctional, is eliminated.
  • Another feature of this method is that the damper (9) does not open and/or the fan arrangement (5) does not start blowing air just when a defrost operation is completed. A certain time, or duration, is allowed for this purpose, this time being required for the humidity at the chamber of the cooling member (1) to condense back to a certain extent.
  • This time can either be a duration predetermined at the control unit (not illustrated in the Figure) of the device (A), or a duration to be determined by at least one sensor in connection with the control unit measuring the temperature and/or humidity of the chamber of the cooling member (1) (the control unit regulates the operation of all parts and units in the device (A)).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Defrosting Systems (AREA)
EP10193890A 2009-12-15 2010-12-07 Betriebsverfahren für Kühlgeräte Withdrawn EP2336686A2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR2009/09426A TR200909426A2 (tr) 2009-12-15 2009-12-15 Soğutucu cihazlar için bir çalıştırma yöntemi

Publications (1)

Publication Number Publication Date
EP2336686A2 true EP2336686A2 (de) 2011-06-22

Family

ID=43639906

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10193890A Withdrawn EP2336686A2 (de) 2009-12-15 2010-12-07 Betriebsverfahren für Kühlgeräte

Country Status (2)

Country Link
EP (1) EP2336686A2 (de)
TR (1) TR200909426A2 (de)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060005566A1 (en) 2002-10-29 2006-01-12 Bsh Bosch Und Siemens Hausgerate Gmbh No-frost refrigerator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060005566A1 (en) 2002-10-29 2006-01-12 Bsh Bosch Und Siemens Hausgerate Gmbh No-frost refrigerator

Also Published As

Publication number Publication date
TR200909426A2 (tr) 2011-07-21

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