EP2325582A2 - Abtausystem für Kühlvorrichtungen - Google Patents

Abtausystem für Kühlvorrichtungen Download PDF

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Publication number
EP2325582A2
EP2325582A2 EP10177793A EP10177793A EP2325582A2 EP 2325582 A2 EP2325582 A2 EP 2325582A2 EP 10177793 A EP10177793 A EP 10177793A EP 10177793 A EP10177793 A EP 10177793A EP 2325582 A2 EP2325582 A2 EP 2325582A2
Authority
EP
European Patent Office
Prior art keywords
evaporator
cooling
compressor
condenser
valve
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Withdrawn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
EP10177793A
Other languages
English (en)
French (fr)
Other versions
EP2325582A3 (de
Inventor
Rüstem Asik
Kerem Tosun
Mehmet Özakinci
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 EP2325582A2 publication Critical patent/EP2325582A2/de
Publication of EP2325582A3 publication Critical patent/EP2325582A3/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2507—Flow-diverting valves

Definitions

  • This invention relates to defrosting systems used in cooler type white goods.
  • the cooling devices should undergo defrosting process at certain times.
  • defrosting process such actions as shutting off the cooler device, leaving the doors of the freezing compartments open etc. were commonly applied in the past.
  • the published patent application No W02009006139 of the prior art discloses a system wherein the frost formed on the evaporator is defrosted by the hot gas pipe that extends out from the compressor and reaches the evaporator. This system, however, stops the cooling process of the refrigerator during defrosting.
  • the utility model application No CN201145456 of the prior art prevents frosting on the evaporator by heating the evaporator by means of the electric heaters. This system, on the other hand, consumes extra energy for the defrosting process.
  • the defrosting system of the invention has been developed for defrosting the frost accumulated on the evaporator.
  • the hot refrigerant passing through the valve at the outlet of the compressor is directly directed to the condenser in the freezing compartment.
  • the condenser exchanges heat with the evaporator in the cooling system. Since the temperature of the gas that passes through the condenser is higher than the temperature of the evaporator, the condenser heats the evaporator and defrosts the frost accumulated on the evaporator.
  • Another property of the defrosting system is that the cooling of the compartments in the cooling device continues during defrosting.
  • a capillary tube and an evaporator in the freezing compartment and an evaporator in the cooling compartment are used.
  • the refrigerant passing through the condenser in the freezing compartment is this time passed through a capillary tube and the evaporator of the freezer, and the cooling of the freezing compartment continues.
  • the refrigerant flowing out from the freezing compartment is also passed through the evaporator in the cooling compartment. Therefore, increase in the temperature of the cooling compartment is prevented.
  • the aim of the invention is to defrost the frost accumulated on evaporators provided in cooling devices by a defrosting system incorporated to a cooling system.
  • Another aim of the invention is to develop a defrosting system that performs defrosting process without halting the cooling function of the cooling device.
  • a further aim of the invention is to ensure that there is no considerable temperature increase in the interior compartments of the cooling device during defrosting process.
  • Another aim of the invention is to ensure that defrosting process is performed with minimum equipment.
  • Yet another aim of the invention is to develop a defrosting system that carries out the defrosting process without consuming extra energy.
  • the aim of this invention is to develop a cheap, easy-to-produce and reliable defrosting system for cooler type white goods.
  • cooling system used in cooling devices basically comprises a compressor, a condenser, a filter unit, a capillary tube and an evaporator.
  • the cooling system (1) shown in Figure 1 (illustrated with bold lines) comprises the same equipment. ln the cooling system (1) accordingly, the refrigerant flowing hot out from the compressor (3) gives heat to outer environment while passing through the condenser (4), condenses and cools down to an extent. Then, the refrigerant, which passes through the filter unit (5), leaves the humidity and foreign materials on this unit (5). Next, the refrigerant, which has passed through the capillary tube (6) and been depressurized, reaches the evaporator in the freezing compartment (7) of the device.
  • the refrigerant evaporates and turns into gas thanks to the heat it takes from the compartment and its low pressure. ln the evaporator (7) the refrigerant, which ensures cooling of the compartment owing to the heat it takes from the compartment, returns to the compressor (3) and the known cooling cycle is completed. This cycle is carried on cyclically.
  • the defrosting system (2) of the invention is developed for defrosting the frost accumulated on the evaporator (7).
  • the cooling device is provided with a valve (8 or 16) which diverts the refrigerant, which flows out from the compressor (3), to the cooling system (1) or to the defrosting system (2).
  • the defrosting system (2) in the cooling device is activated periodically or depending on user preferences.
  • the cooling function of the cooling device is performed even when the defrosting system (2) is operated.
  • the hot refrigerant which passes through the valve (8 or 16) at the outlet of the compressor (3), is directly directed to at least one condenser (9) in the freezing compartment.
  • the condenser (9) here exchanges heat with the evaporator (7) in the cooling system (1). Since the temperature of the gas that passes through the condenser (9) is higher than the temperature of the evaporator (7), the condenser heats the evaporator (7) and defrosts the frost accumulated on the evaporator. Thus, the layers of ice accumulated on the evaporator (7) are defrosted. A decrease occurs in the temperature of the gas passing through the condenser (9).
  • Another property of the defrosting system (2) is that the cooling of the volume in the cooling device continues during defrosting.
  • at least one capillary tube (10) and at least one evaporator (11) in the freezing compartment are used.
  • the refrigerant passing through the condenser (9) is this time passed through the capillary tube (10) and the evaporator (11) of the freezer, and the cooling of the freezing compartment continues.
  • Another property of the defrosting system (2) is that the refrigerant that flows out from the freezing compartment is passed through the evaporator in the cooling compartment (12) (the temperature of the cooling compartment is higher than the freezing compartment). Thus, any increase in the temperature of the cooling compartment is prevented.
  • the operations of the evaporator in the freezing compartment (11) and the evaporator of the cooling compartment (12) may be arranged depending on the user preferences. ln other words, these two evaporators (11, 12) can operate together or separately.
  • a diverter valve may be employed at the inlets of the evaporator of the freezing compartment (11) and/or the evaporator of the cooling compartment (12).
  • At least one three-way valve ( Figure 1 shows a four-way valve (8), Figure 2 shows a three-way valve (16)) is employed at the outlet of the compressor (3) in order to divert the refrigerant that flows out from the compressor (3) to the cooling system (1) or to the defrosting system (2).
  • the three way valve (16) illustrated in Figure 2 has three ways one of which comes from the outlet of the compressor (3), one of which goes to the condenser (4) in the cooling system (1), and one of which goes to the condenser (9) in the defrosting system (2). ln accordance with the process to be applied (cooling or defrosting), the valve (16) sets its position and diverts the refrigerant coming from the compressor (3) to the cooling system (1) or to the defrosting system (2). ln the case that a three way valve (16) is employed, a certain amount of refrigerant remains in the cooling system (1) and the defrosting system (2).
  • Figure 1 illustrates a structure wherein less refrigerant can be used.
  • the four way valve shown in Figure 1 has four ways one of which comes from the outlet of the compressor (3), one of which goes to the condenser (4) in the cooling system (1), and one of which goes to the condenser (9) in the defrosting system (2), and one of which goes to the inlet of the compressor (3) (valve suction pipe (15)). ln this structure, one of the systems (1 or 2) stops operation while the other one (1 or 2) is operated thanks to the valve (8), the refrigerant remaining in the system which stopped operation is suctioned by means of the compressor (3).
  • the refrigerant coming from the condenser (4) in the cooling system (1) or from the condenser (9) in the defrosting system (2) passes through the valve (8), and reaches the inlet of the compressor (3) through the valve suction pipe (15). ln other words, the refrigerant is suctioned by means of the compressor (3) from the condenser (4 or 9) of the system that stops operation (1 or 2), is passed through the compressor (3) and is again supplied to the operating system through the valve (8).
  • cooling and defrosting is performed with less refrigerant than the structure with three way valve (16) uses.
  • One of the advantages of the defrosting system (2) of the invention is to prevent the freezing and/or cooling compartments from being heated while the defrosting process is performed. Moreover, no extra energy is consumed during this process. To this end, it is ensured that only one compressor (3) in the device is used, and both cooling and freezing processes are performed by this compressor (3). ln addition, a simple and reliable system is obtained by employing minimum equipment (valve (8 or 16), condenser (9), capillary tube (10), evaporator (11 and/or 12), adapter (13)) for defrosting and cooling processes.
  • minimum equipment valve (8 or 16), condenser (9), capillary tube (10), evaporator (11 and/or 12), adapter (13)
  • an adapter (13) which always directs the incoming refrigerant to the compressor in gaseous phase, is employed at the outlet of the compressor (3), and it is ensured that all of the incoming ways pass through this adapter (13). Therefore, it is guaranteed that only gaseous refrigerant enters into the compressor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Defrosting Systems (AREA)
EP10177793A 2009-11-20 2010-09-21 Abtausystem für Kühlvorrichtungen Withdrawn EP2325582A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR2009/08821A TR200908821A2 (tr) 2009-11-20 2009-11-20 Soğutucu cihazlar için buz çözme sistemi.

Publications (2)

Publication Number Publication Date
EP2325582A2 true EP2325582A2 (de) 2011-05-25
EP2325582A3 EP2325582A3 (de) 2012-01-11

Family

ID=43770482

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10177793A Withdrawn EP2325582A3 (de) 2009-11-20 2010-09-21 Abtausystem für Kühlvorrichtungen

Country Status (2)

Country Link
EP (1) EP2325582A3 (de)
TR (1) TR200908821A2 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102914106A (zh) * 2012-11-27 2013-02-06 江苏省苏食肉品有限公司 一种用于冷链系统中的冷库融霜方法
CN105588396A (zh) * 2016-02-02 2016-05-18 河南新飞电器有限公司 多循环风冷冰箱化霜制冷系统及其控制方法
CN106091503A (zh) * 2016-05-30 2016-11-09 合肥华凌股份有限公司 一种自动化霜系统和制冷设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2882696A (en) 1956-06-04 1959-04-21 Anheuser Busch Defrost system for refrigerated cabinets
CN201145456Y (zh) 2007-12-25 2008-11-05 美的集团电冰箱制造（合肥）有限公司 电冰箱除霜加热器
WO2009006139A2 (en) 2007-06-29 2009-01-08 Electrolux Home Products, Inc. Hot gas defrost method and apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3022639A (en) * 1959-09-18 1962-02-27 Revco Inc Built-in refrigeration apparatus with defrost controls
US3218819A (en) * 1963-05-16 1965-11-23 Revco Inc Refrigeration apparatus
DE2013662A1 (de) * 1969-09-02 1971-03-25 Industrie A Zanussi SpA, Porde none (Italien) Abtauvornchtung fur Kuhlschranke, insbesondere Haushaltskuhlschranke
US3978684A (en) * 1975-04-17 1976-09-07 Thermo King Corporation Refrigeration system
US4043144A (en) * 1976-06-17 1977-08-23 Dole Refrigerating Company Hot gas defrost system
US4646539A (en) * 1985-11-06 1987-03-03 Thermo King Corporation Transport refrigeration system with thermal storage sink
US5174123A (en) * 1991-08-23 1992-12-29 Thermo King Corporation Methods and apparatus for operating a refrigeration system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2882696A (en) 1956-06-04 1959-04-21 Anheuser Busch Defrost system for refrigerated cabinets
WO2009006139A2 (en) 2007-06-29 2009-01-08 Electrolux Home Products, Inc. Hot gas defrost method and apparatus
CN201145456Y (zh) 2007-12-25 2008-11-05 美的集团电冰箱制造（合肥）有限公司 电冰箱除霜加热器

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102914106A (zh) * 2012-11-27 2013-02-06 江苏省苏食肉品有限公司 一种用于冷链系统中的冷库融霜方法
CN105588396A (zh) * 2016-02-02 2016-05-18 河南新飞电器有限公司 多循环风冷冰箱化霜制冷系统及其控制方法
CN106091503A (zh) * 2016-05-30 2016-11-09 合肥华凌股份有限公司 一种自动化霜系统和制冷设备
CN106091503B (zh) * 2016-05-30 2018-05-11 合肥华凌股份有限公司 一种自动化霜系统和制冷设备

Also Published As

Publication number Publication date
EP2325582A3 (de) 2012-01-11
TR200908821A2 (tr) 2011-06-21

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