EP3064873A1 - Kühlvorrichtung - Google Patents

Kühlvorrichtung Download PDF

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Publication number
EP3064873A1
EP3064873A1 EP15197921.8A EP15197921A EP3064873A1 EP 3064873 A1 EP3064873 A1 EP 3064873A1 EP 15197921 A EP15197921 A EP 15197921A EP 3064873 A1 EP3064873 A1 EP 3064873A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
compartment
refrigeration
ice
refrigeration device
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Withdrawn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
EP15197921.8A
Other languages
English (en)
French (fr)
Inventor
Rüstem Asik
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 EP3064873A1 publication Critical patent/EP3064873A1/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Withdrawn legal-status Critical Current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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F25D11/025—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures using primary and secondary refrigeration systems
    • 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
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C5/00—Working or handling ice
    • F25C5/20—Distributing ice
    • F25C5/22—Distributing ice particularly adapted for household refrigerators
    • 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

Definitions

  • the present invention relates to refrigeration devices with an ice-making compartment.
  • refrigeration devices comprising at least one compartment suitable for receiving the products to be stored.
  • Said compartment is mainly cooled by a refrigeration cycle performed by at least one compressor, at least one condenser, at least one capillary pipe, at least one evaporator included in the refrigeration device and at least one refrigerant circulated in between said equipments.
  • the heat of the refrigerant leaving the compressor in a hot state is transferred to the outer environment, while it is being passed through the condenser, whereby it is condensed and cooled to a certain extent.
  • the refrigerant which is passed through the capillary pipe such that its pressure is reduced, reaches to the evaporator.
  • the refrigerant is easily evaporated and converted into a gas thanks to its low pressure and the heat taken from the compartment, and it cools down the compartment with the heat taken therefrom. Then, the refrigerant is returned back to the compressor and the refrigeration cycle is completed.
  • Said refrigeration devices may also perform an ice-making process.
  • One of the embodiments for ice-making in the prior art is to dispose an ice container filled with water into a freezing compartment of the refrigeration device, whereby water in the ice chamber is frozen so as to give ice.
  • ice-making process is quite long and cannot sufficiently meet the needs of the user.
  • a separate ice-making compartment is formed in the refrigeration device, wherein a separate refrigeration cycle is performed in order to obtain ice.
  • the refrigeration device comprises an ice-making compartment disposed in the refrigeration compartment.
  • Said refrigeration device comprises a compressor for cooling the refrigeration compartment, a condenser, a capillary pipe and a cooling evaporator.
  • Said refrigeration device also comprises an ice-making evaporator connected to the outlet of the condenser and to the inlet of the compressor in order cool the ice-making compartment, a valve disposed at the outlet of the compressor, and a bypass pipe extending between the outlet of the compressor and the inlet of the ice-making evaporator.
  • the heated refrigerant leaving the compressor is passed through the condenser and distributed into the capillary pipe and ice-making evaporator.
  • the refrigerant passed through the capillary pipe reaches to the cooling evaporator, and cools down the refrigeration compartment while being passed therethrough and returns to the compressor.
  • the refrigerant that has reached to the ice-making evaporator cools down the ice-making compartment so that ice is obtained.
  • the refrigerant leaving the ice-making evaporator is returned to the compressor and the cycle is thus completed. If the user is desirous to use the ice obtained in the ice-making compartment, instead of circulating the heated refrigerant in the refrigeration cycle by means of a valve disposed at the outlet of the compressor, it is passed through the ice-making evaporator via a bypass pipe so that ice generated in the ice-making compartment is easily cracked and separated from each other.
  • the refrigeration process of the refrigeration compartment does not need to be stopped in order to cool the ice-making compartment, and these compartments may be cooled simultaneously.
  • use of the compressor and condenser to cool down the ice-making compartment results in a phase change in the refrigerant for the cooling process, which reduces the amount of energy to be obtained from the refrigerant.
  • the compressor since both of the refrigeration cycles are supplied by a single compressor, the compressor should be operated intensely in order to cool down the two compartments as required, which increases energy consumption of the refrigeration device. Due to said drawbacks, operational efficiency of the refrigeration device is reduced.
  • the refrigeration device and comprising at least one body; at least one freezing compartment disposed in the said body and having a temperature below 0°C; at least a first refrigeration system for cooling said freezing compartment and comprising at least one compressor, at least one condenser and at least a first evaporator; a refrigerant circulated through this system; and at least one ice-making compartment for making ice, also comprises at least a second refrigeration system for cooling the ice-making compartment comprising at least a first heat exchanger positioned in such a way to make heat exchange with the ice-making compartment; at least a second heat exchanger positioned in such a way to make heat exchange with the said freezing compartment; a coolant which is passed through the first heat exchanger and second heat exchanger so as to conduct said heat exchange operations and which does not freeze within the operation temperature range of the freezing compartment of the refrigeration device and does not undergo a phase change throughout the refrigeration process; at least a first line at least one end of which is connected to the first heat exchanger and at least another end
  • ice is able to be generated in the refrigeration device without negatively affecting the cooling efficiency of a freezing compartment or a refrigeration compartment of the refrigeration device. Furthermore, since a coolant, which does not undergo a phase change (which constantly remains liquid within the operation temperature of the refrigeration device, which does not freeze or evaporate), is used in the inventive refrigeration device to cool down the ice-making compartment, no compressor is needed in the second refrigeration system, and cycling of the coolant may be performed with the use of a simpler structure (circulation pump) that consumes far less energy than the compressor. Moreover, external elements such as valves are not needed to separate the second refrigeration system that cools the ice-making compartment from the first refrigeration system. Thus, a refrigeration device may be obtained which is inexpensive to produce, easy to use, practical and reliable.
  • An object of the present invention is to provide a refrigeration device comprising an ice-making compartment.
  • Another object of the present invention is to provide a refrigeration device that cools the ice-making compartment by means of an external refrigeration system.
  • a further object of the present invention is to provide a refrigeration device wherein the ice-making compartment may be cooled independently and in accordance with the user's needs.
  • Another object of the present invention is to provide a refrigeration device that cools the ice-making compartment without reducing cooling efficiency of the main compartment thereof.
  • Another object of the present invention is to provide a refrigeration device wherein the ice-making compartment is cooled down without a phase change is experienced in the refrigerant used for cooling said compartment.
  • Still another object of the present invention is to provide a refrigeration device which is easy to use, cost-effective and reliable.
  • Figure 1 is a side sectional view of the inventive refrigeration device.
  • the refrigeration devices wherein products are stored that are desired to be cooled, generally have an ice-making compartment, through which ice requirement of the user is fulfilled.
  • said system In order to cool said compartment, in addition to elements provided in the system that performs normal refrigeration cycle of the refrigeration device, said system is modified by incorporating additional elements into the system. This, however, results in loss of energy and reduces operational efficiency of the refrigeration device. Therefore, with the present invention, there is provided a refrigeration device wherein the ice-making compartment is cooled down without reducing operational efficiency of the refrigeration device.
  • the refrigeration device (S) comprises at least one body (G); at least one freezing compartment (S1) disposed in the said body (G) and having a temperature below 0°C; at least a first refrigeration system for cooling said freezing compartment (S1) and comprising at least one compressor (K), at least one condenser (not shown) and at least a first evaporator (E1); a refrigerant circulated through this system; and at least one ice-making compartment (1) for making ice.
  • the inventive refrigeration device (S) also comprises at least a second refrigeration system for cooling the ice-making compartment (1), which the second system comprises at least a first heat exchanger (2a) positioned in such a way to make heat exchange with the ice-making compartment (1) (preferably, inside the body (G) so as to contact with at least one side of the ice-making compartment (1)) and preferably closer to the outer environment where the refrigeration device (S) is situated; at least a second heat exchanger (2b) positioned in such a way to make heat exchange with the said freezing compartment (S1) (preferably, inside the body (G) so as to contact with at least one side of the freezing compartment (S1) or inside the freezing compartment (S1), particularly at an area close to the first evaporator (E1) (i.e.
  • a coolant which is passed through the first heat exchanger (2a) and second heat exchanger (2b) so as to conduct said heat exchange operations and which does not freeze within the operation temperature range of the freezing compartment (S1) of the refrigeration device (S) (i.e.
  • said coolant preferably contains a low freezing point substance such as ethylene glycol, methanol which is preferably different from the said refrigerant
  • at least a second line (3b) at least one end of which is connected to the first heat exchanger (2a) and at least another end of which is connected to the second heat exchanger (2b), and through which the coolant which has left the first heat exchanger (2a) and has been heated due to the heat taken from the ice-making compartment (S1) is conveyed to the second heat exchanger (2b); and at least one circulation pump (4) for circulating the cool
  • the refrigeration system (S) preferably comprises at least one fan (F1) that increases air circulation inside the freezing compartment (S1) in order to cool it in a more efficient manner.
  • said first line (3a) and second line (3b) may either be positioned in the body (G), or it may be positioned outside the body (G) by enclosing it with an insulation material.
  • the coolant takes heat from the ice-making compartment (1) and by doing so becomes heated to some extent, and accordingly the ice-making compartment (1) is cooled.
  • the coolant leaving the first heat exchanger (2a) is passed through the second line (3b) and returned to the second heat exchanger (2b), so the cycle is completed. With a constant repetition of this cycle, the ice-making compartment (1) is allowed to reach to the sufficient coldness level and ice is generated.
  • the refrigeration device (S) since the ice-making compartment (1) is cooled by a second refrigeration system independent from the first refrigeration system that cools the freezing compartment (S1), cooling efficiency of the refrigeration device (S) is not reduced during the ice-making process.
  • the second heat exchanger (2b) is positioned at a lower portion of the freezing compartment (S1).
  • the first heat exchanger (2a) is preferably positioned at an upper portion of the freezing compartment (S1), whereby the amount of energy required for circulation of the coolant between the first heat exchanger (2a) and second heat exchanger (2b) is reduced and operational efficiency of the refrigeration device (S) may be increased.
  • the first evaporator (E1) that cools the freezing compartment (S1) is preferably positioned at an upper portion of the freezing compartment (S1) as well, so that the coolant is cooled in an efficient and fast manner during the heat exchange of the second heat exchanger (2b) with the freezing compartment (S1), based on the principle of expansion and rising of heated air, while at the same time the temperature of the freezing compartment (S1) may be maintained at the desired value and a reduction in the cooling efficiency of the freezing compartment may be prevented.
  • the refrigeration device (S) comprises at least one chamber (4a), wherein the circulation pump (4) is positioned.
  • the circulation pump (4) is positioned.
  • at least a first isolation member (4b) is preferably positioned around the chamber (4a). In this way, any frost deposit that may occur in the circulation pump (4), due to said low temperature, may be avoided.
  • the refrigeration device (S) comprises at least one activation member (not shown) that controls operation of the circulation pump (4), in order to operate circulation pump (4) depending on the user's need and switch off the circulation pump (4), if not needed, so as to prevent further energy consumption. Thanks to the said member, if it is desired to make ice in the ice-making compartment (1), the circulation pump (4) is operated and the coolant is allowed to circulate between the first heat exchanger (2a) and the second heat exchanger. If it is not required to make ice, then operation of the circulation pump (4) is stopped by the said member, whereby unnecessary operation of the circulation pump (4) is prevented and operational efficiency of the refrigeration device (S) is increased.
  • the refrigeration device (S) preferably comprises at least a first door (D1) through which access to the freezing compartment (S1) is controlled and the ice-making compartment (1) is positioned on the first door (D1) (preferably the first heat exchanger (2a) is also positioned on the first door (D1)).
  • the refrigeration device (S) also comprises at least one ice-removing compartment (1 b) which is positioned on the first door (D1), connected with the ice-making compartment (1) and suitable to be reached from the outside environment where the refrigeration device (S) is situated, without opening the first door (D1). Ice generated in the ice-making compartment (1) is collected in the said ice-removing compartment (1 b), so the need to open and close the door is reduced and the operational efficiency of the refrigeration device (S) is increased.
  • the refrigeration device (S) comprises at least one refrigeration compartment (S2) which is positioned in the said body (G) such that it is preferably located at the upper portion of the freezing compartment (S1), and which is cooled by the said first refrigeration system in order to ensure that its temperature is from 0°C to 5°C, and at least a second door (D2) for controlling access to the said refrigeration compartment (S2).
  • the ice-making compartment (1) is preferably positioned in the second door (D2) so that the user may easily reach to the ice-making compartment (1) (preferably, the first heat exchanger (2a) is also positioned on the second door (D2)).
  • Cooling of the said refrigeration compartment (S2) may be performed by the first refrigeration system of the refrigeration device (S) (i.e. by conveying the cold air in the freezing compartment (S1) to the refrigeration compartment (S2) via an air channel), or else in order to cool the refrigeration chamber (S2), the refrigeration device (S) may also comprise at least a second evaporator (E2) and preferably at least a second fan (F2) to increase air circulation in the refrigeration compartment (S2).
  • the refrigeration device (S) preferably comprises at least one ice-removing compartment (1b) which is positioned on the second door (D2), connected with the ice-making compartment (1) and suitable to be reached from the outside environment where the refrigeration device (S) is situated, without opening the second door (D2).
  • the refrigeration device (S) preferably comprises at least a second isolation member (1a) positioned around the ice-making compartment (1).
  • the refrigeration device (S) preferably comprises at least a third fan (5) that increase air circulation in the ice-making compartment (1) in order to cool the said ice-making compartment (1) in a faster and more effective manner.
  • the refrigeration device (S) preferably comprises at least one liquid container (6) for preventing cavitation that may be seen on the circulation pump (4) due to insufficient amount of the coolant, which container is positioned on the first line (3a) or second line (3b) and contains a certain amount of the said coolant.
  • said liquid container (6) is preferably positioned in such a way that it is located at that part of the circulation pump (4) that is connected to the second heat exchanger (2b).
  • ice is generated in the refrigeration device (S) without negatively affecting the cooling efficiency of a freezing compartment (S1) or a refrigeration compartment (S2) of the refrigeration device (S). Furthermore, since a coolant is used in the inventive refrigeration device (S) to cool down the ice-making compartment (1) which does not undergo a phase change (which constantly remains liquid within the operation temperature of the refrigeration device (S), which does not freeze or evaporate), no compressor is need in the second refrigeration system, and cycling of the coolant may be performed with the use of a simpler structure (circulation pump (4)) consuming far less energy than the compressor. Moreover, external elements such as valves are not needed to separate the second refrigeration system that cools the ice-making compartment (1) from the first refrigeration system. Thus, a refrigeration device (S) may be obtained which is inexpensive to produce, easy to use, practical and reliable.
EP15197921.8A 2015-03-03 2015-12-04 Kühlvorrichtung Withdrawn EP3064873A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR201502503 2015-03-03

Publications (1)

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EP3064873A1 true EP3064873A1 (de) 2016-09-07

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ID=55024727

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15197921.8A Withdrawn EP3064873A1 (de) 2015-03-03 2015-12-04 Kühlvorrichtung

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EP (1) EP3064873A1 (de)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2777297A (en) * 1953-07-21 1957-01-15 Nash Kelvinator Corp Two evaporator refrigerating system
JPH0611228A (ja) * 1992-06-29 1994-01-21 Hitachi Ltd 自動製氷機付き冷蔵庫
US20050252232A1 (en) * 2004-05-17 2005-11-17 Lg Electronics Inc. Refrigerator and airflow passage for ice making compartment of the same
US20090260371A1 (en) * 2008-04-18 2009-10-22 Whirlpool Corporation Secondary cooling apparatus and method for a refrigerator
US20100242526A1 (en) * 2008-11-10 2010-09-30 Brent Alden Junge Refrigerator
US20100326093A1 (en) * 2009-06-30 2010-12-30 Watson Eric K Method and apparatus for controlling temperature for forming ice within an icemaker compartment of a refrigerator
US20110185760A1 (en) 2007-12-18 2011-08-04 Lg Electronics Inc. Ice maker for refrigerator
US20120047917A1 (en) * 2010-08-27 2012-03-01 Alexander Rafalovich MODULAR REFRIGERATOR and ICEMAKER

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2777297A (en) * 1953-07-21 1957-01-15 Nash Kelvinator Corp Two evaporator refrigerating system
JPH0611228A (ja) * 1992-06-29 1994-01-21 Hitachi Ltd 自動製氷機付き冷蔵庫
US20050252232A1 (en) * 2004-05-17 2005-11-17 Lg Electronics Inc. Refrigerator and airflow passage for ice making compartment of the same
US20110185760A1 (en) 2007-12-18 2011-08-04 Lg Electronics Inc. Ice maker for refrigerator
US20090260371A1 (en) * 2008-04-18 2009-10-22 Whirlpool Corporation Secondary cooling apparatus and method for a refrigerator
US20100242526A1 (en) * 2008-11-10 2010-09-30 Brent Alden Junge Refrigerator
US20100326093A1 (en) * 2009-06-30 2010-12-30 Watson Eric K Method and apparatus for controlling temperature for forming ice within an icemaker compartment of a refrigerator
US20120047917A1 (en) * 2010-08-27 2012-03-01 Alexander Rafalovich MODULAR REFRIGERATOR and ICEMAKER

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