EP2397795A2 - Abtauverfahren - Google Patents

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Publication number
EP2397795A2
EP2397795A2 EP11168656A EP11168656A EP2397795A2 EP 2397795 A2 EP2397795 A2 EP 2397795A2 EP 11168656 A EP11168656 A EP 11168656A EP 11168656 A EP11168656 A EP 11168656A EP 2397795 A2 EP2397795 A2 EP 2397795A2
Authority
EP
European Patent Office
Prior art keywords
evaporator
condenser
compressor
valve
compartment
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Withdrawn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
EP11168656A
Other languages
English (en)
French (fr)
Other versions
EP2397795A3 (de
Inventor
Oner Aktas
Tekin Karayilan
Fatih Muminoglu
Murat Kayikci
Bora Kayikci
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 EP2397795A2 publication Critical patent/EP2397795A2/de
Publication of EP2397795A3 publication Critical patent/EP2397795A3/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Withdrawn legal-status Critical Current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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F25B47/022—Defrosting cycles hot gas defrosting

Definitions

  • This invention relates to a method developed for defrosting the ice accumulating on the cooling elements (evaporators) of cooler devices that comprise such an element.
  • the cooling cycle of cooler devices conventionally comprises a compressor, a condenser, a capillary tube and an evaporator. Accordingly, the refrigerant that flows hot out from the compressor gives off heat while passing through the condenser and therefore condenses and cools. Then, the refrigerant, which has passed through the capillary tube and lost pressure, visits the evaporator.
  • the refrigerant here evaporates into gas easily thanks to its low pressure and the heat it takes from the compartment.
  • the refrigerant which enables cooling of the compartment owing to the heat it takes from the compartment, returns to the compressor.
  • the known cooling cycle is completed and cyclically continued.
  • the refrigerant that has visited the evaporator causes frosting on the evaporator while evaporating, owing to the heat it takes from the compartment, into gas.
  • the ice accumulating on the evaporator is defrosted by means of a heater positioned on or around the evaporator.
  • this situation results in extra energy consumption.
  • This method includes the following steps of: determining a defrost operation condition; operating a valve which is formed on a capillary tube between an evaporator and a condenser in the case that defrost operation condition is satisfied; performing a defrosting process through the valve; detecting temperature of the evaporator after predetermined time; confirming the temperature of the evaporator with defrost ending temperature; and turning off the valve when the temperature of the evaporator is reached to the defrost ending temperature.
  • the present invention discloses a cooler device the cooling cycle of which includes an additional condenser positioned on the cooler element (evaporator) the ice of which is to be defrosted.
  • the said cooler device comprises at least one compressor that performs the cooling cycle, at least one evaporator, a capillary tube and a condenser.
  • the compressor is connected to both condensers via at least one valve.
  • the additional condenser is excluded from the cooling cycle when defrost operation is inactive, and it is ensured that the refrigerant is directed to the main condenser by means of the valve provided there.
  • the refrigerant which flows out from the compressor at high temperatures, is directed to the additional condenser by means of the said valve, transfers its heat to the ambient environment, condenses there and ensures that the ice on the evaporator is defrosted.
  • the refrigerant flowing out from the additional condenser is directed to the main condenser and the regular cooling cycle continues.
  • the aim of this invention is to develop a cooler device that comprises an alternative application for defrosting the ice accumulating on the cooling element.
  • Another aim of this invention is to develop a cooler device that comprises an additional condenser for defrosting the ice accumulating on the cooling element.
  • Another aim of this invention is to develop a cooler device that has cooling elements the interconnection of which is established by the valve.
  • Another aim of this invention is to develop a cooler device that comprises an additional condenser included in the cooling cycle when defrost operation is active.
  • the invention discloses an alternative defrosting method developed for defrosting the ice accumulating on a cooling element (evaporator) provided on cooler devices.
  • the cooling cycle in cooler devices is performed by compressor, condenser, capillary tube and evaporator units.
  • Figure 1 shows an exemplary cooler device (S) comprising at least one freezing compartment (1), at least one cooling compartment (2), at least one evaporator-1 (3) used to cool the freezing compartment (1), at least one other evaporator-2 (4) used to cool the cooling compartment (2).
  • the refrigerant which flows out hot from at least one compressor (5) in the cooler device (S), transfers its heat to the ambient environment, condenses and cools there.
  • the refrigerant which has passed through the capillary tube (10) and lost pressure, visits the evaporator (3, 4).
  • the refrigerant here evaporates into gas easily thanks to its low pressure and the heat it takes from the compartment (1, 2).
  • the refrigerant which enables cooling of the compartment (1, 2) owing to the heat it takes from the compartment (1, 2), returns to the compressor (5).
  • the known cooling cycle is completed and cyclically continued. During this cooling cycle, however, frosting may occur on the evaporator (3, 4).
  • the cooling cycle of the cooler device (S) shown in Figure 1 is provided with at least one additional condenser (7) which is connected to the compressor (5) and positioned on the evaporator-1 (3) the ice of which is to be defrosted.
  • FIG. 2 illustrates an exemplary cooling cycle that comprises an additional condenser (7).
  • the operation of the cooling cycle elements is controlled by at least one control unit which is not shown in the figures.
  • the additional condenser (7) and the main condenser (6) are connected to the compressor (5) via at least one valve (9b).
  • the control unit breaks the connection of the valve (9b) with the compressor (5) and the additional condenser (7) during the regular cooling cycle when defrost operation is not performed. Thus, it is ensured that the refrigerant flowing out from the compressor (5) is directed to the main condenser (6).
  • the connection between this condenser (6) and the evaporators (3, 4) belonging to the compartments (1, 2) is established by at least one other valve (9c).
  • this valve (9c) is also controlled by the control unit.
  • the control unit breaks the connection of the valve (9c) with the evaporator-2 (4) of the cooling compartment (2) and ensures that the refrigerant is directed to the other evaporator-1 (3) which enables cooling of the freezing compartment (1).
  • the refrigerant that flows out from this evaporator-1 (3) is directed to the compressor (5) and the cooling cycle is completed.
  • the refrigerant that visits the condenser (6) is firstly directed to the evaporator-2 (4) which enables cooling of the cooling compartment (2).
  • the refrigerant that comes out from this evaporator-2 (4) is then directed to the other evaporator-1 (3) which enables cooling of the freezing compartment (1).
  • the valve (9c) which establishes connection between the condenser (6) and the evaporators (3, 4), breaks the connection of the condenser (6) with the evaporator-1 (3) of the freezing compartment (1) and ensures that the refrigerant is passed to the evaporator-2 (4) of the cooling compartment (2).
  • connection between the evaporator-2 (4) of the cooling compartment (2) and the compressor (5) is also established by means of this valve (9a).
  • This valve (9a) breaks the connection between the evaporator-2 (4) of the cooling compartment (2) and the compressor (5) when defrost operation is inactive, and it is ensured that the refrigerant is directed from the evaporator-2 (4) of the cooling compartment (2) to the evaporator-1 (3) of the freezing compartment (1).
  • the refrigerant that flows out from this evaporator-1 (3) directed to the compressor (5) and the regular cooling cycle is completed.
  • the valve (9b) breaks the connection between the compressor (5) and the main condenser (6).
  • the compressor (5) and the additional condenser (7) are connected, and the additional condenser (7) is included in the cooling cycle.
  • the refrigerant that flows out hot from the compressor (5) is directed to the additional condenser (7).
  • the refrigerant transfers its heat to the ambient environment at this condenser (7), condenses and cools there. Since the said condenser (7) is positioned on the evaporator-1 (3) the ice of which is to be defrosted, the ice accumulating on the evaporator-1 (3) is defrosted by the heat given off.
  • the valve (9c) which establishes connection of this condenser (6) with the compartments (3, 4), breaks the connection of the condenser (6) with the evaporator-1 (3) of the freezing compartment (1) and ensures that the refrigerant is directed to the evaporator-2 (4) of the cooling compartment (2).
  • the cooling compartment (2) is cooled.
  • valve (9a) which establishes connection of this evaporator-2 (4) with the other evaporator-1 (3) and with the compressor (5), breaks the connection between these evaporators (3, 4) and ensures that the refrigerant that flows out from this evaporator-2 (4) is directed to the compressor (5) and the cooling cycle is completed.
  • the cooling cycle of the cooler device (S) of the invention comprises at least one compressor (5), at least one condenser (6), at least one additional condenser (7) for defrost operation, a capillary tube and evaporator units (3, 4).
  • the operation of these units is controlled by at least one control unit.
  • the connection of the compressor (5) with the main condenser (6) and with the additional condenser (7) is established by at least one valve (9b).
  • the control unit controls the operation of the valve (9b), and the connection of the compressor (5) with the main condenser (6) or with the additional condenser (7) is established.
  • connection of the main condenser (6) with the evaporators (3, 4) is established by at least one other valve (9c).
  • a cooler device comprising at least one evaporator-1 (3) enabling cooling of the freezing compartment (1) and at least one other evaporator-2 (4) enabling cooling of the cooling compartment (2)
  • the connection of the main condenser (6) with the evaporator (3, 4) to which the refrigerant is to be directed is established by controlling this valve (9c), depending on the active/inactive status of defrost operation.
  • the connection of these two evaporators (3, 4) to each other is established by at least one other valve (9a).
  • This valve (9a) also establishes the connection of the evaporator-2 (4), in which no defrost operation is performed, with the compressor (5).
  • the valve (9a) interconnects these two evaporators (3, 4) by breaking the connection of the evaporator-2 (4) with the compressor (5) when defrost operation is inactive in a cooler device (S) comprising at least two evaporators (3, 4).
  • a cooler device comprising at least two evaporators (3, 4).
  • this valve (9a) breaks the interconnection of these evaporators (3, 4) and ensures that the cooling cycle is completed by connecting the evaporator-2 (4), in which no defrost operation is performed, with the compressor (5).

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Defrosting Systems (AREA)
EP11168656.4A 2010-06-18 2011-06-03 Abtauverfahren Withdrawn EP2397795A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR2010/04948A TR201004948A2 (tr) 2010-06-18 2010-06-18 Bir buz çözme yöntemi.

Publications (2)

Publication Number Publication Date
EP2397795A2 true EP2397795A2 (de) 2011-12-21
EP2397795A3 EP2397795A3 (de) 2013-08-07

Family

ID=44118208

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11168656.4A Withdrawn EP2397795A3 (de) 2010-06-18 2011-06-03 Abtauverfahren

Country Status (2)

Country Link
EP (1) EP2397795A3 (de)
TR (1) TR201004948A2 (de)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090075280A (ko) 2008-01-03 2009-07-08 주식회사 대우일렉트로닉스 냉장고 제상 방법

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3218819A (en) * 1963-05-16 1965-11-23 Revco Inc Refrigeration apparatus
US4123914A (en) * 1975-07-02 1978-11-07 Tyler Refrigeration Corporation Energy saving change of phase refrigeration system
US4522037A (en) * 1982-12-09 1985-06-11 Hussmann Corporation Refrigeration system with surge receiver and saturated gas defrost
US6880353B1 (en) * 2004-07-08 2005-04-19 Tecumseh Products Company Vapor compression system with evaporator defrost system
JP4001171B2 (ja) * 2005-07-26 2007-10-31 ダイキン工業株式会社 冷凍装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090075280A (ko) 2008-01-03 2009-07-08 주식회사 대우일렉트로닉스 냉장고 제상 방법

Also Published As

Publication number Publication date
EP2397795A3 (de) 2013-08-07
TR201004948A2 (tr) 2011-01-21

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