KR20070094287A - Refrigerator and method for control operating thereof - Google Patents

Refrigerator and method for control operating thereof Download PDF

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KR20070094287A
KR20070094287A KR1020060024779A KR20060024779A KR20070094287A KR 20070094287 A KR20070094287 A KR 20070094287A KR 1020060024779 A KR1020060024779 A KR 1020060024779A KR 20060024779 A KR20060024779 A KR 20060024779A KR 20070094287 A KR20070094287 A KR 20070094287A
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South Korea
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evaporators
refrigerant
storage
cooling
refrigerator
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KR1020060024779A
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Korean (ko)
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KR101140711B1 (en
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안지훈
이재승
김윤영
김용한
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삼성전자주식회사
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Priority to KR1020060024779A priority Critical patent/KR101140711B1/en
Priority to CNB2006101083882A priority patent/CN100520241C/en
Publication of KR20070094287A publication Critical patent/KR20070094287A/en
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    • 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
    • F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
    • 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
    • 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
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
    • 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
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/067—Evaporator fan units
    • 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
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • F25D19/006—Thermal coupling structure or interface
    • 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
    • F25D23/00—General constructional features
    • F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
    • 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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/02—Details of evaporators
    • F25B2339/023—Evaporators consisting of one or several sheets on one face of which is fixed a refrigerant carrying coil
    • 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
    • F25B2600/2511—Evaporator distribution 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
    • 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
    • F25D2700/123—Sensors measuring the inside temperature more than one sensor measuring the inside temperature in a compartment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

A refrigerator and a method for controlling operation thereof are provided to control a refrigerant of each evaporator with one three-way valve while cooling a freezing compartment in an indirect cooling method, and reduce the number of capillary tubes connected to each evaporator. A plurality of evaporators(40,42) are installed correspondingly to a plurality of storage compartments(32,34,36). A refrigerant passage is formed by connecting two or more evaporators in series and connecting the rest of the evaporators to the evaporators connected in series. A controller controls a direction of a refrigerant flowing in the plurality of evaporators to cool the plurality of storage compartments in combination of direct cooling and indirect cooling. A refrigerant direction control device controls a direction of a refrigerant flowing in the plurality of evaporators to control partial storage compartments in a cooling method different from the rest of storage compartments.

Description

냉장고 및 그 운전제어방법{Refrigerator and method for control operating thereof}Refrigerator and its operation control method

도 1은 종래 냉장고의 제1싸이클 구성도,1 is a configuration diagram of a first cycle of a conventional refrigerator,

도 2는 종래 냉장고의 제2싸이클 구성도,2 is a configuration diagram of a second cycle of a conventional refrigerator;

도 3은 본 발명에 의한 냉장고의 개략 사시도,3 is a schematic perspective view of a refrigerator according to the present invention;

도 4는 본 발명의 제1실시예에 의한 냉장고의 싸이클 구성도,4 is a cycle configuration diagram of a refrigerator according to a first embodiment of the present invention,

도 5는 본 발명의 제2실시예에 의한 냉장고의 싸이클 구성도,5 is a cycle configuration diagram of a refrigerator according to a second embodiment of the present invention,

도 6은 본 발명에 의한 냉장고의 운전제어 블록도,6 is an operation control block diagram of a refrigerator according to the present invention;

도 7A 및 도 7B는 본 발명에 의한 냉장고의 운전제어방법의 동작 흐름도.7A and 7B are flowcharts illustrating an operation control method of a refrigerator according to the present invention.

*도면의 주요부분에 대한 부호 설명** Description of symbols on the main parts of the drawings *

32 : 냉장실 34 : 변온실32: refrigerating chamber 34: variable temperature room

36 : 냉동실 38 : 냉장실 증발기36: freezer compartment 38: refrigerator compartment evaporator

40 : 변온실 증발기 42 : 냉동실 증발기40: variable temperature room evaporator 42: freezer compartment evaporator

44 : 냉동실팬 46 : 압축기44: freezer compartment fan 46: compressor

48 : 응축기 50 : 삼방밸브48 condenser 50 three-way valve

52,54 : 모세관 62 : 제어부52, 54: capillary 62: control unit

본 발명은 복수의 저장실을 독립적으로 냉각하는 냉장고 및 그 운전제어방법에 관한 것으로, 특히 복수의 저장실 중 냉동실을 간접냉각방식으로 구현하면서 각 실의 냉매 제어를 위한 밸브의 개수를 줄일 수 있는 냉장고 및 그 운전제어방법에 관한 것이다.The present invention relates to a refrigerator that independently cools a plurality of storage compartments and an operation control method thereof, and in particular, a refrigerator that can reduce the number of valves for refrigerant control of each compartment while implementing a freezing compartment of a plurality of storage compartments by indirect cooling. The operation control method.

일반적으로, 냉장고는 그 내부로 냉매가 순환되는 통상의 냉동싸이클이 적용되어 액체상태의 냉매가 기화할 때에 주위의 열을 흡수함에 따라 생성된 냉기를 냉동실 및 냉장실과 같은 식품 저장실로 공급하여 각종 식품을 장기간 신선하게 보관할 수 있도록 하는 것으로, 최근에는 이러한 냉각시스템과 전열히터를 이용하여 발효식품인 김치를 숙성 보관하는 김치냉장고가 출시되어 널리 보급되고 있다.In general, a refrigerator is applied with a conventional freezing cycle in which a refrigerant is circulated therein to absorb the heat when the refrigerant in a liquid state evaporates, thereby supplying the generated cold air to food storage rooms such as a freezing compartment and a refrigerating compartment. In order to keep the fresh for a long time, the kimchi refrigerator for aging and storing kimchi, which is fermented food, has been widely used in recent years by using such a cooling system and an electric heater.

이외에도, 사용자의 다양한 라이프 스타일 및 기호식품의 변화에 따라 기존의 단순 냉동 냉장 보관기능에서 탈피하여 육류, 생선, 야채, 김치 등 차별화된 보관기능을 필요로 하는 별도의 저장실(온도가변실)이 냉장고에 적용되고 있다.In addition, the refrigerator is a separate storage room (temperature-variable room) that requires differentiated storage functions such as meat, fish, vegetables, and kimchi by escaping from the existing simple freezer storage function according to various lifestyles and preferences of users. Is being applied to.

이러한 냉동싸이클에 채용되는 냉각장치는 냉매를 고온고압으로 압축시키는 압축기와, 압축된 냉매를 주위와 열교환하여 응축시키는 응축기와, 응축된 냉매를 저압으로 팽창시키는 모세관과, 저압으로 팽창된 냉매를 저장실내 저장물과 열교환하여 증발시키는 증발기를 포함하며, 이러한 증발기는 복수의 저장실에 대응하여 각 실에 설치되는 복수의 증발기를 포함한다.The cooling device employed in the refrigeration cycle includes a compressor for compressing a refrigerant at high temperature and high pressure, a condenser for condensing the compressed refrigerant by heat exchange with the surroundings, a capillary tube for expanding the condensed refrigerant at a low pressure, and a refrigerant expanded at a low pressure. An evaporator for evaporating heat exchanged with the indoor storage, the evaporator includes a plurality of evaporators installed in each chamber corresponding to the plurality of storage chambers.

상기 복수의 증발기는 냉동실과 냉장실 및 변온실에 각각 설치되어 각 실을 독립적으로 냉각시키며, 복수의 증발기에는 별도의 팬이 설치되지 않아 냉동실을 포함한 복수의 저장실을 직접냉각방식으로 냉각시킨다.The plurality of evaporators are respectively installed in the freezing chamber, the refrigerating chamber and the temperature changing chamber to independently cool each chamber, and a plurality of evaporators do not have a separate fan to cool the plurality of storage chambers including the freezing chamber by a direct cooling method.

도 1 및 도 2는 이러한 복수의 저장실에 대응하는 복수의 증발기를 가지는 종래 냉장고의 싸이클 구성도이다.1 and 2 are cycle configuration diagrams of a conventional refrigerator having a plurality of evaporators corresponding to the plurality of storage compartments.

도 1 및 도 2에서, 종래 냉장고는 냉매를 압축하는 압축기(10a,10b)와, 압축기(10a,10b)의 출구측 배관에 연결되며 압축기(10a,10b)를 거친 냉매를 액상냉매로 응축시키는 응축기(11a,11b)와, 응축기(11a,11b)를 거친 냉매를 감압 팽창시키는 모세관(15a,16a,17a), (15b,16b,17b)과, 모세관(15a,16a,17a), (15b,16b,17b)을 거친 냉매를 전달받아 각 실에 냉기를 형성하는 냉동실 증발기(18a,18b,), 냉장실 증발기(19a,19b) 및 변온실 증발기(20a,20b)를 구비한다.1 and 2, the conventional refrigerator is connected to the compressor (10a, 10b) for compressing the refrigerant, the outlet pipe of the compressor (10a, 10b) and condensing the refrigerant passing through the compressor (10a, 10b) with liquid refrigerant Condenser 11a, 11b, capillary tubes 15a, 16a, 17a, 15b, 16b, 17b for depressurizing and expanding the refrigerant passing through the condensers 11a, 11b, capillary tubes 15a, 16a, 17a, 15b. Freezer compartment evaporators 18a, 18b, and refrigerator compartment evaporators 19a and 19b and coolant chamber evaporators 20a and 20b which receive coolant passing through 16b and 17b to form cold air in each chamber are provided.

상기 모세관(15a,16a,17a), (15b,16b,17b)과 증발기(18a,18b), (19a,19b), (20a,20b)는 복수의 저장실에 대응하여 각각 설치된다.The capillary tubes 15a, 16a, 17a, 15b, 16b, 17b, and evaporators 18a, 18b, 19a, 19b, and 20a, 20b are provided corresponding to a plurality of storage chambers, respectively.

또, 상기 응축기(11a,11b)와 각각의 모세관(15a,16a,17a), (15b,16b,17b) 사이에는 각각의 응축기(11a,11b)를 거친 냉매의 방향을 제어하기 위해 2개의 삼방밸브(12a,13a) 또는 3개의 온-오프밸브(12b,13b,14b)가 설치된다.In addition, between the condenser (11a, 11b) and each of the capillary (15a, 16a, 17a), (15b, 16b, 17b) two three-way to control the direction of the refrigerant passing through each of the condenser (11a, 11b) Valves 12a and 13a or three on-off valves 12b, 13b and 14b are provided.

이와 같이, 복수의 저장실에 대응하는 복수의 증발기(18a,18b), (19a,19b), (20a,20b)를 가지는 냉장고에서 각 실의 설정온도를 구현하기 위한 싸이클 제어패턴을 설명한다.As described above, a cycle control pattern for realizing a set temperature of each chamber in a refrigerator having a plurality of evaporators 18a, 18b, 19a, 19b, and 20a, 20b corresponding to the plurality of storage chambers will be described.

상기 복수(예를 들어, 3개)의 저장실은 통상 냉동실, 냉장실 및 변온실의 기능을 하며, 냉동실의 설정온도범위는 -15.0℃ ~ -23.0℃, 냉장실의 설정온도범위는 9.0℃ ~ 1.0℃, 변온실의 설정온도범위는 12.0℃ ~ -12.0℃로 유지되는 것이 보통이다.The plurality (for example, three) of the storage compartments usually function as a freezer compartment, a refrigerating compartment and a temperature change chamber, and the set temperature range of the freezer compartment is -15.0 ° C to -23.0 ° C, and the set temperature range of the refrigerating compartment is 9.0 ° C to 1.0 ° C. In general, the temperature range of the temperature changing room is maintained at 12.0 ℃ ~ -12.0 ℃.

먼저, 도 1의 싸이클 구성을 냉매패스 "A", "B", "C", "D"를 참조하여 설명한다.First, the cycle configuration of FIG. 1 will be described with reference to refrigerant paths "A", "B", "C", and "D".

도 1에서, 냉동실과 냉각실을 냉각할 경우, 제1삼방밸브(12a)에서는 냉매패스 "A"측을 오픈시키고 냉매패스 "D"측을 클로즈시키며, 제2삼방밸브(13a)에서는 냉매패스 "B"측을 오픈시키고 냉매패스 "C"측을 클로즈시키는 조건으로 냉매를 보내어 압축기(10a)에서 압축된 냉매가 응축기(11a), 모세관(16a)을 거쳐 냉장실 증발기(19a)와 냉동실 증발기(18a)로 유입되도록 하여 냉동실과 냉장실을 냉각시킨다.In FIG. 1, when the freezing chamber and the cooling chamber are cooled, the refrigerant path "A" side is opened in the first three-way valve 12a and the refrigerant path "D" is closed, and the refrigerant path is in the second three-way valve 13a. Refrigerant compressed by the compressor (10a) by passing the refrigerant under the condition of opening the "B" side and closing the "C" side of the refrigerant path passes through the condenser (11a) and the capillary tube (16a) and the freezer compartment evaporator (19a). Cool the freezer compartment and the refrigerating compartment by letting it flow into 18a).

냉동실을 단독 냉각할 경우, 제1삼방밸브(12a)에서는 냉매패스 "A"측을 오픈시키고 냉매패스 "D"측을 클로즈시키며, 제2삼방밸브(13a)에서는 냉매패스 "B"측을 클로즈시키고 냉매패스 "C"측을 오픈시키는 조건으로 냉매를 보내어 압축기(10a)에서 압축된 냉매가 응축기(11a), 모세관(17a)을 거쳐 냉동실 증발기(18a)로 유입되도록 하여 냉동실을 냉각시킨다.When the freezing chamber is cooled alone, the first three-way valve 12a opens the refrigerant path "A" side and closes the refrigerant path "D" side. The second three-way valve 13a closes the refrigerant path "B" side. The refrigerant is sent under the condition that the refrigerant path “C” is opened to allow the refrigerant compressed by the compressor 10a to flow into the freezer compartment evaporator 18a through the condenser 11a and the capillary tube 17a to cool the freezing compartment.

변온실을 단독 냉각할 경우, 제1삼방밸브(12a)에서는 냉매패스 "A"측을 클로즈시키고 냉매패스 "D"측을 오픈시키는 조건으로 냉매를 보내어 압축기(10a)에서 압축된 냉매가 응축기(11a), 모세관(15a)을 거쳐 변온실 증발기(20a)로 유입되도록 하여 변온실을 냉각시킨다.When the temperature chamber is cooled alone, the first three-way valve 12a sends the refrigerant under the condition of closing the refrigerant path "A" side and opening the refrigerant path "D" side, so that the refrigerant compressed in the compressor 10a is condenser ( 11a) through the capillary tube 15a to be introduced into the chamber evaporator 20a to cool the chamber.

이때, 제2삼방밸브(13a)는 냉매패스 "B"측과 "C"측을 오픈시키거나 또는 클 로즈시켜도 상관없다. 이는 제1삼방밸브(12a)의 냉매패스 조건에 따라 제2삼방밸브(13a) 측으로는 냉매가 유입되지 않기 때문이다.At this time, the second three-way valve 13a may open or close the refrigerant path "B" side and "C" side. This is because the refrigerant does not flow into the second three-way valve 13a side according to the refrigerant path condition of the first three-way valve 12a.

다음에는, 도 2의 싸이클 구성을 냉매패스 "I", "J", "K"를 참조하여 설명한다.Next, the cycle configuration of FIG. 2 will be described with reference to the refrigerant paths "I", "J", and "K".

도 2에서, 냉장실을 단독 냉각할 경우, 제1온-오프밸브(12b)에서는 냉매패스 "I"측을 오픈시키고, 제2 및 제3온-오프밸브(13b,14b)에서는 냉매패스 "J", "K"측을 클로즈시키는 조건으로 냉매를 보내어 압축기(10b)에서 압축된 냉매가 응축기(11b), 모세관(15b)을 거쳐 냉장실 증발기(19b)로 유입되도록 하여 냉장실을 냉각시킨다.In FIG. 2, when the refrigerating chamber is cooled alone, the refrigerant path "I" side is opened at the first on-off valve 12b, and the refrigerant path "J" at the second and third on-off valves 13b and 14b. The refrigerant is sent under the condition of closing the " K " side to allow the refrigerant compressed by the compressor 10b to flow into the refrigerating chamber evaporator 19b via the condenser 11b and the capillary tube 15b to cool the refrigerator compartment.

변온실을 단독 냉각할 경우, 제2온-오프밸브(13b)에서는 냉매패스 "J"측을 오픈시키고, 제1 및 제3온-오프밸브(12b,14b)에서는 냉매패스 "I", "K"측을 클로즈시키는 조건으로 냉매를 보내어 압축기(10b)에서 압축된 냉매가 응축기(11b), 모세관(16b)을 거쳐 변온실 증발기(20b)로 유입되도록 하여 변온실을 냉각시킨다.When the temperature chamber is cooled alone, the second on-off valve 13b opens the refrigerant path "J", and the first and third on-off valves 12b and 14b open the refrigerant paths "I", ". The refrigerant is sent under the condition of closing the " K " side to allow the refrigerant compressed by the compressor 10b to flow through the condenser 11b and the capillary tube 16b into the temperature chamber evaporator 20b to cool the temperature chamber.

냉동실을 단독 냉각할 경우, 제3온-오프밸브(14b)에서는 냉매패스 "K"측을 오픈시키고, 제1 및 제2온-오프밸브(12b,13b)에서는 냉매패스 "I", "J"측을 클로즈시키는 조건으로 냉매를 보내어 압축기(10b)에서 압축된 냉매가 응축기(11b), 모세관(17b)을 거쳐 냉동실 증발기(18b)로 유입되도록 하여 냉동실을 냉각시킨다.When the freezer compartment is cooled alone, the refrigerant path "K" is opened at the third on-off valve 14b, and the refrigerant paths "I" and "J are provided at the first and second on-off valves 12b and 13b. The refrigerant is sent under the condition of closing the side to allow the refrigerant compressed by the compressor 10b to flow into the freezer compartment evaporator 18b through the condenser 11b and the capillary tube 17b to cool the freezer compartment.

도 1 및 도 2와 같은 싸이클 구성의 종래 냉장고는 냉동실, 냉장실 및 변온실의 열부하가 다르고 설정온도가 다르기 때문에(특히 변온실의 설정온도범위가 크기 때문에) 각 실에 대한 독립적 냉각방식이 요구되며, 이에 따라 2개의 삼방밸브 (12a,13a) 또는 3개의 온-오프밸브(12b,13b,14b)가 필요하다.In the conventional refrigerators having the cycle configuration as shown in FIGS. 1 and 2, since the heat load of the freezer compartment, the refrigerating compartment, and the variable temperature chamber is different and the set temperature is different (particularly, because the set temperature range of the variable temperature chamber is large), an independent cooling method for each chamber is required. Thus, two three-way valves 12a, 13a or three on-off valves 12b, 13b, 14b are required.

즉, 냉장실에 과도한 부하가 유입되는 경우(냉장실에 상온의 식품이 다량 보관된 경우), 일시적으로 냉동실에 과냉(설정온도보다 낮음)이 발생할 수 있으나 냉동실은 냉동온도이며 통상 냉동 보관되는 식품의 경우 -18℃ 이하이면 더 낮은 온도에서 보관되더라도 동일한 신선도를 보임으로서 냉동실의 과냉은 문제가 되지 않는다. 반면 냉장실과 변온실의 과냉은 식품의 정온성이 나빠지게 되므로 냉장실과 변온실에도 독립적으로 증발기를 구성해야 하며, 냉매 제어를 위해 2개의 삼방밸브(12a,13a) 또는 3개의 온-오프밸브(12b,13b,14b)가 추가되어 다수의 밸브 추가에 따른 재료비 증가와 제품 양산성이 떨어지는 문제점이 있다.In other words, when excessive load is introduced into the refrigerating compartment (when a large amount of food at room temperature is stored in the refrigerating compartment), temporary cooling may occur temporarily in the freezing compartment (lower than the set temperature), but the freezer compartment is a freezing temperature and is usually frozen If the temperature is lower than -18 ℃, even if stored at a lower temperature shows the same freshness, the freezing of the freezer is not a problem. On the other hand, the supercooling of the refrigerating compartment and the submerged chamber deteriorates the constant temperature of food. Therefore, the evaporator must also be configured independently in the refrigerating compartment and the submerged chamber, and two three-way valves 12a and 13a or three on-off valves for refrigerant control are provided. 12b, 13b, and 14b) have been added, there is a problem in that the increase in material costs and product mass-produced by adding a plurality of valves.

따라서, 본 발명은 상기와 같은 종래의 문제점을 해결하기 위한 것으로, 본 발명의 목적은 복수의 저장실에 대응하는 복수의 증발기를 가지는 냉장고의 싸이클 구성에 있어 복수의 저장실 중 냉동실을 간접냉각방식으로 구현하면서 각 증발기의 냉매 제어를 위한 밸브의 개수를 1개로 줄일 수 있는 냉장고 및 그 운전제어방법을 제공하는데 있다.Accordingly, the present invention is to solve the above-mentioned conventional problems, an object of the present invention is to implement a freezer compartment of the plurality of storage compartments by indirect cooling method in the cycle configuration of the refrigerator having a plurality of evaporators corresponding to the plurality of storage compartments. While providing a refrigerator and its operation control method that can reduce the number of valves for refrigerant control of each evaporator to one.

본 발명의 다른 목적은, 냉동실의 냉각방식을 직접냉각방식에서 간접냉각방식으로 변경하여 냉동실의 냉각효과를 높일 수 있는 냉장고 및 그 운전제어방법을 제공하는데 있다.Another object of the present invention is to provide a refrigerator and an operation control method thereof, which can increase the cooling effect of the freezing compartment by changing the cooling method of the freezing compartment from direct cooling to indirect cooling.

상기 목적을 달성하기 위하여 본 발명은 복수의 저장실에 대응하는 복수의 증발기를 구비하고, 상기 복수의 증발기 중 두 개 이상의 증발기는 직렬로 연결하고, 나머지 증발기는 직렬로 연결된 두 개의 증발기에 병렬로 연결하여 냉매유로를 형성하는 것을 특징으로 한다.In order to achieve the above object, the present invention includes a plurality of evaporators corresponding to a plurality of storage rooms, two or more evaporators of the plurality of evaporators are connected in series, and the other evaporators are connected in parallel to two evaporators connected in series. To form a refrigerant passage.

또한, 본 발명은 상기 복수의 저장실을 직접 및 간접냉각방식의 조합으로 냉각하기 위해 복수의 증발기에 흐르는 냉매의 방향을 제어하는 제어부를 더 포함한다.In addition, the present invention further includes a control unit for controlling the direction of the refrigerant flowing in the plurality of evaporators to cool the plurality of storage chambers in a combination of direct and indirect cooling.

또한, 본 발명은 상기 복수의 저장실 중 일부 저장실을 간접냉각방식으로 냉각하기 위해 복수의 증발기 중 일부 증발기에 팬을 설치하는 것을 특징으로 한다.In addition, the present invention is characterized in that a fan is installed in some evaporators of the plurality of evaporators to cool some of the plurality of storage compartments by indirect cooling.

상기 냉매유로에는 복수의 증발기에 흐르는 냉매의 방향을 조절하기 위한 냉매방향조절장치를 더 설치하며, 상기 제어부는 각각의 저장실 온도에 기초하여 복수의 저장실을 독립적으로 냉각시키도록 냉매방향조절장치의 작동을 제어하는 것을 특징으로 한다.The refrigerant flow path further comprises a refrigerant direction control device for adjusting the direction of the refrigerant flowing in the plurality of evaporators, the control unit is operated by the refrigerant direction control device to independently cool the plurality of storage rooms based on the respective storage room temperature It characterized in that to control.

상기 냉매방향조절장치는 냉매가 유입되는 복수의 증발기측 입구에 설치된 하나의 삼방밸브인 것을 특징으로 한다.The refrigerant direction control device is characterized in that the one-way valve installed in the inlet of the plurality of evaporator side in which the refrigerant is introduced.

그리고, 본 발명은 복수의 저장실에 대응하는 복수의 증발기를 구비하고, 상기 복수의 저장실을 직접 및 간접냉각방식의 조합으로 냉각하기 위해 복수의 증발기에 흐르는 냉매의 방향을 제어하는 제어부를 포함한다.In addition, the present invention includes a plurality of evaporators corresponding to the plurality of storage chambers, and includes a control unit for controlling the direction of the refrigerant flowing through the plurality of evaporators to cool the plurality of storage chambers in a combination of direct and indirect cooling.

또한, 본 발명은 복수의 저장실에 대응하는 복수의 증발기를 구비한 냉장고에 있어서, 상기 복수의 저장실 중 일부 저장실을 나머지 저장실과 다른 냉각방식으로 제어하는 제어부; 및 상기 일부 저장실을 나머지 저장실과 다른 냉각방식으로 제어하기 위해 복수의 증발기에 흐르는 냉매의 방향을 조절하는 냉매방향조절장치를 포함한다.According to another aspect of the present invention, there is provided a refrigerator including a plurality of evaporators corresponding to a plurality of storage chambers, the refrigerator comprising: a control unit controlling some of the plurality of storage chambers by a different cooling method from the remaining storage chambers; And a refrigerant direction control device for controlling a direction of the refrigerant flowing through the plurality of evaporators to control the some storage compartments in a different cooling manner from the other storage compartments.

또한, 상기 일부 저장실의 냉각방식은 간접냉각방식인 것을 특징으로 한다.In addition, the cooling method of the some storage compartment is characterized in that the indirect cooling method.

또한, 상기 일부 저장실은 냉동실인 것을 특징으로 한다.In addition, the some storage compartment is characterized in that the freezer compartment.

그리고, 본 발명은 복수의 저장실에 대응하는 복수의 증발기를 구비하고, 상기 복수의 증발기 중 두 개 이상의 증발기는 직렬로 연결하고, 나머지 증발기는 직렬로 연결된 두 개의 증발기에 병렬로 연결하여 냉매유로를 형성하며, 상기 복수의 저장실을 직접 및 간접냉각방식의 조합으로 냉각하기 위해 직ㆍ병렬로 연결된 복수의 증발기에 흐르는 냉매의 방향을 제어하는 제어부를 포함한다.The present invention includes a plurality of evaporators corresponding to a plurality of storage chambers, two or more evaporators of the plurality of evaporators are connected in series, and the remaining evaporators are connected in parallel to two evaporators connected in series to provide a refrigerant flow path. And a control unit configured to control a direction of the refrigerant flowing in the plurality of evaporators connected in series and parallel to cool the plurality of storage chambers by a combination of direct and indirect cooling methods.

또한, 본 발명은 상기 복수의 저장실 중 일부 저장실을 간접냉각방식으로 냉각하기 위해 복수의 증발기 중 일부 증발기에 팬을 설치하며, 상기 제어부는 일부 저장실 온도에 기초하여 일부 저장실을 독립적으로 냉각시키도록 팬의 작동을 제어하는 것을 특징으로 한다.In addition, the present invention is to install a fan in some of the plurality of evaporators to cool some of the plurality of storage compartments by indirect cooling method, and the control unit to cool the some compartments independently based on the temperature of some storage compartments. It is characterized by controlling the operation of.

또한, 본 발명은 복수의 저장실에 대응하는 복수의 증발기를 구비한 냉장고의 운전제어방법에 있어서, 상기 복수의 저장실 온도를 감지하는 단계; 감지된 복수의 저장실 온도를 미리 정해진 설정온도와 비교하여 상기 복수의 저장실 온도가 설정온도범위를 벗어나면 각각의 저장실 온도에 기초하여 상기 복수의 증발기에 흐르는 냉매의 방향을 제어하는 단계; 및 상기 복수의 증발기에 흐르는 냉매의 방향제어에 따라 복수의 저장실을 직접 및 간접냉각방식의 조합으로 냉각하는 단계;를 포함한다.In addition, the present invention provides a method of controlling a refrigerator having a plurality of evaporators corresponding to a plurality of storage chambers, the method comprising: sensing the plurality of storage chamber temperatures; Controlling the direction of the refrigerant flowing through the plurality of evaporators based on the respective storage chamber temperatures when the plurality of storage chamber temperatures are out of a set temperature range by comparing the sensed plurality of storage chamber temperatures with a predetermined set temperature; And cooling the plurality of storage compartments in a combination of direct and indirect cooling methods according to the direction control of the refrigerant flowing through the plurality of evaporators.

또한, 상기 복수의 저장실을 직접 및 간접냉각방식의 조합으로 냉각하는 단계는, 각각의 저장실 온도에 기초하여 복수의 저장실을 순차적으로 냉각하며, 순차적으로 냉각되는 상기 복수의 저장실 중 일부 저장실을 간접냉각방식으로 냉각하고, 나머지 저장실을 직접냉각방식으로 냉각하는 것을 특징으로 한다.The cooling of the plurality of storage compartments by a combination of direct and indirect cooling may include sequentially cooling the plurality of storage compartments based on respective storage compartment temperatures, and indirectly cooling some of the plurality of storage compartments that are sequentially cooled. Cooling method, the remaining storage compartment is characterized in that the cooling by direct cooling method.

또한, 상기 복수의 저장실을 직접 및 간접냉각방식의 조합으로 냉각하는 단계는, 일부 저장실을 간접냉각방식으로 냉각하기 위해 일부 저장실에 대응하는 일부 증발기에 설치된 팬의 작동을 제어하는 것을 특징으로 한다.In addition, the cooling of the plurality of storage compartments by a combination of direct and indirect cooling may be characterized by controlling the operation of a fan installed in some evaporators corresponding to some storage compartments in order to cool some storage compartments by indirect cooling.

이하, 본 발명의 일실시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

도 3은 본 발명에 의한 냉장고의 단면도로서, 복수(예를 들어, 3개)의 저장실이 냉장실과 변온실 및 냉동실로 사용한 예를 나타낸 것이다.3 is a cross-sectional view of the refrigerator according to the present invention, which shows an example in which a plurality of storage chambers (for example, three) are used as a refrigerating chamber, a temperature changing chamber, and a freezing chamber.

도 3에서, 본 발명의 냉장고는 상호 구획된 상부의 냉장실(32)과 중간부의 변온실(34) 및 하부의 냉동실(36)이 형성된 본체(30)와, 냉장실(32)과 변온실(34) 및 냉동실(36)의 개방된 전면을 각각 개폐하는 냉장실 도어(33)와 변온실 도어(35) 및 냉동실 도어(37)를 구비한다.In FIG. 3, the refrigerator of the present invention includes a main body 30 in which a refrigerating chamber 32 and an intermediate temperature changing chamber 34 and a lower freezing chamber 36 formed in the middle are formed, and a refrigerating chamber 32 and a temperature changing chamber 34. ) And a refrigerating compartment door 33, a temperature changing compartment door 35, and a freezing compartment door 37 that open and close the opened front surface of the freezing compartment 36, respectively.

상기 냉장실(32)과 변온실(34) 및 냉동실(36)의 벽면 일지점에는 고내온도를 감지하는 냉장실 온도센서(39)와 변온실 온도센서(41) 및 냉동실 온도센서(43)가 설치되고, 냉장실(32)과 변온실(34) 및 냉동실(36)의 내측 후방에는 냉장실(32)과 변온실(34) 및 냉동실(36)의 독립적인 냉각을 위한 냉장실 증발기(38)와 변온실 증발기(40) 및 냉동실 증발기(42)가 각각 설치된다.At one point of the wall surface of the refrigerating chamber 32, the temperature changing room 34, and the freezing chamber 36, a refrigerating room temperature sensor 39, a temperature changing room temperature sensor 41, and a freezing room temperature sensor 43 for detecting a high temperature inside are installed. In the rear of the refrigerating compartment 32, the variable temperature room 34, and the freezing compartment 36, a refrigerating compartment evaporator 38 and a variable temperature room evaporator for independent cooling of the refrigerating compartment 32, the variable temperature room 34, and the freezing compartment 36 are provided. 40 and a freezer compartment evaporator 42 are provided, respectively.

또한, 상기 냉동실 증발기(42)의 일측에는 냉동실(36) 내부로 냉기를 순환시 키는 냉동실팬(44)이 설치되어 냉동실(36)의 냉각방식을 간접냉각방식으로 구현함으로서 냉동실(36)의 냉각효과를 높이도록 구성하였다.In addition, a freezing compartment fan 44 for circulating cold air into the freezing compartment 36 is installed at one side of the freezing compartment evaporator 42 to implement the cooling method of the freezing compartment 36 by indirect cooling. It was configured to increase the cooling effect.

또한, 상기 본체(30)의 하측 후방에는 별도의 공간으로 구획된 기계실(45)이 마련되며, 이 기계실(45)에는 압축기(46)와 응축기(도 4 및 도 5 참조) 등이 설치된다.In addition, the lower side of the main body 30 is provided with a machine room 45 partitioned into a separate space, the machine room 45 is provided with a compressor 46 and a condenser (see Figs. 4 and 5).

한편, 도 3에서는 냉동실(36)에만 팬(44)을 설치하여 냉동실(36)만을 간접냉각방식으로 구현하였으나, 필요에 따라 냉장실(32)과 변온실(34)에도 별도의 팬을 설치하여 냉장실(32)과 변온실(34)도 직접냉각방식에서 간접냉각방식으로 변경할 수 있음은 물론이다. 그러나 냉장실(32) 등은 습도를 고려해야 하기 때문에 통상 직접냉각방식을 사용하고 있다.Meanwhile, in FIG. 3, the fan 44 is installed only in the freezing chamber 36 to implement only the freezing chamber 36 in an indirect cooling method. However, if necessary, separate fans are also installed in the refrigerating chamber 32 and the temperature changing chamber 34. (32) and the variable temperature room 34 can also be changed from direct cooling to indirect cooling. However, since the refrigerating chamber 32 or the like has to consider humidity, a direct cooling method is usually used.

도 4는 본 발명의 제1실시예에 의한 냉장고의 싸이클 구성도이다.4 is a cycle configuration diagram of a refrigerator according to a first embodiment of the present invention.

도 4에서, 본 발명의 냉장고는 냉매를 압축하는 압축기(46), 압축기(46)의 출구측 배관에 연결되며 압축기(46)를 거친 냉매를 응축팬(49)에 의해 주위와 열교환하여 응축시키는 응축기(48), 응축기(48)를 거친 냉매를 감압 팽창시키는 제1 및 제2모세관(52,54), 제1 및 제2모세관(52,54)을 거친 냉매를 전달받아 저장실내 공기와 열교환하는 냉장실, 변온실 및 냉동실 증발기(38,40,42)를 구비한다.In FIG. 4, the refrigerator of the present invention is connected to a compressor 46 compressing a refrigerant, an outlet pipe of the compressor 46, and condenses the refrigerant passing through the compressor 46 by heat exchange with the surroundings by a condensation fan 49. The refrigerant passing through the condenser 48, the first and second capillaries 52 and 54, and the first and second capillaries 52 and 54, which decompressively expands the refrigerant passing through the condenser 48, is exchanged with air in the storage compartment. And a refrigerator compartment, a temperature chamber, and a freezer compartment evaporator (38, 40, 42).

상기 냉동실 증발기(42) 출구로부터 연장되는 배관은 냉장실 증발기(38) 입구와 연결되는 배관에 합류하도록 연결되어 냉동실 증발기(42)를 통과한 냉매가 다시 냉장실 증발기(38)를 거치도록 한 것이다. 그리고 최종적으로 냉장실 증발기(38)와 변온실 증발기(40)를 거친 기체상태의 냉매는 다시 압축기(46) 쪽으로 흐른 다.The pipe extending from the outlet of the freezer compartment evaporator 42 is connected to join the pipe connected to the inlet of the refrigerator compartment evaporator 38 so that the refrigerant passing through the freezer compartment evaporator 42 passes through the refrigerator compartment evaporator 38 again. Finally, the gaseous refrigerant having passed through the refrigerating chamber evaporator 38 and the variable temperature chamber evaporator 40 again flows toward the compressor 46.

또, 상기 응축기(48)와 제1 및 제2모세관(52,54) 사이에는 응축기(48)를 거친 냉매의 방향을 냉동실 증발기(42)와 냉장실 증발기(38) 또는 변온실 증발기(40) 쪽으로 제어하기 위한 삼방밸브(50; 3-Way Valve)가 설치되며, 냉동실 증발기(42)에는 냉기를 순환하기 위한 냉동실팬(44)이 설치된다.In addition, between the condenser 48 and the first and second capillaries 52 and 54, the direction of the refrigerant passing through the condenser 48 is directed toward the freezer compartment evaporator 42 and the refrigerating compartment evaporator 38 or the variable temperature chamber evaporator 40. Three-way valve (50; 3-Way Valve) for controlling is installed, the freezer compartment evaporator 42 is provided with a freezer compartment 44 for circulating cold air.

도 5는 본 발명의 제2실시예에 의한 냉장고의 싸이클 구성도로서, 전체적인 싸이클 구성에 있어 도 4와 동일하나 냉장실 증발기(38)와 변온실 증발기(40)의 위치를 바꾸어 구성한 것이다. 5 is a cycle configuration diagram of a refrigerator according to a second embodiment of the present invention, which is the same as that of FIG. 4 in the overall cycle configuration, but is configured by changing the positions of the refrigerating compartment evaporator 38 and the variable temperature chamber evaporator 40.

한편, 도 4 및 도 5에서는 냉매의 방향을 제어하기 위한 냉매방향조절장치로 삼방밸브(50)를 사용하였으나, 필요에 따라 사방밸브를 사용할 수도 있다.Meanwhile, although the three-way valve 50 is used as a refrigerant direction control device for controlling the direction of the refrigerant in FIGS. 4 and 5, a four-way valve may be used as necessary.

또한, 도 4 및 도 5에서는 3개의 실이 냉장실(32), 변온실(34), 냉동실(36)로 사용된 경우에 있어서의 싸이클 구성을 예로 들어 설명하였으나, 본 발명은 냉장실(32), 변온실(34), 냉동실(36)과 관계없이 3개의 실을 가지는 냉장고에 모두 적용될 수 있다.In addition, in FIG. 4 and FIG. 5, the cycle configuration in the case where three chambers are used as the refrigerating chamber 32, the temperature changing chamber 34, and the freezing chamber 36 has been described as an example. Regardless of the temperature changing room 34 and the freezing chamber 36, all of them may be applied to a refrigerator having three chambers.

도 6은 본 발명의 일실시예에 의한 냉장고의 운전제어 블록도로서, 도 3 내지 도 5에 도시한 장치 외에 냉장실(32), 변온실(34) 및 냉동실(36) 각각의 목표온도(Trset, Tmset, Tfset)를 설정하는 온도설정부(60)와, 냉장고의 각 장치들을 제어하는 제어부(62)를 더 포함한다.6 is an operation control block diagram of a refrigerator according to one embodiment of the present invention, in addition to the apparatus shown in FIGS. 3 to 5, the target temperature Trset of each of the refrigerating chamber 32, the temperature changing room 34, and the freezing chamber 36. And a temperature setting unit 60 for setting Tmset and Tfset, and a control unit 62 for controlling each device of the refrigerator.

상기 제어부(62)는 냉장고의 전체적인 동작을 제어하는 마이컴으로, 상기 냉장실, 변온실 및 냉동실 온도센서(39,41,43)에 의해 감지된 냉장실, 변온실 및 냉 동실(32,34,36)의 고내온도를 입력받아 사용자 설정온도(Trset, Tmset, Tfset)와 비교하고, 그 비교결과에 따라 냉장실(32), 변온실(34), 냉동실(36) 각각을 독립적으로 냉각하기 위한 운전을 제어한다.The control unit 62 is a microcomputer that controls the overall operation of the refrigerator, and the refrigerating chamber, the changing room, and the freezing chamber 32, 34, and 36 detected by the refrigerating chamber, the changing room, and the freezing chamber temperature sensors 39, 41, and 43. Control the operation to independently cool each of the refrigerating chamber 32, the temperature changing room 34, and the freezing chamber 36 according to the result of the comparison with the user set temperature (Trset, Tmset, Tfset). do.

또한, 상기 제어부(62)는 냉장실(32)과 변온실(34) 및 냉동실(36)의 냉각을 위한 운전제어 시, 삼방밸브(50)의 제어를 통해 냉매패스 "E", "F"측을 오픈 또는 클로즈시켜 냉매의 방향을 제어하고, 냉동실(36)의 냉각운전 시에는 냉동실팬(44)을 가동(온)시켜 냉동실(36)의 냉각효과를 높이도록 제어한다.In addition, the controller 62 controls refrigerant paths "E" and "F" through the control of the three-way valve 50 during operation control for cooling the refrigerating chamber 32, the temperature changing room 34, and the freezing chamber 36. To control the direction of the refrigerant by opening or closing the freezer, and during the cooling operation of the freezer compartment 36, the freezer compartment fan 44 is operated (on) to increase the cooling effect of the freezer compartment 36.

이하, 상기와 같이 구성된 냉장고 및 그 운전제어방법의 동작과정 및 작용효과를 설명한다.Hereinafter, the operation process and the effect of the refrigerator and the operation control method configured as described above will be described.

도 7A 및 도 7B는 본 발명에 의한 냉장고의 운전제어방법의 동작 흐름도이다.7A and 7B are flowcharts illustrating an operation control method of a refrigerator according to the present invention.

본 발명은 복수의 저장실(32,34,36)을 구비하고 이에 대응하는 복수의 증발기(38,40,42)를 설치하여 복수의 저장실(32,34,36)을 독립적으로 냉각시키는 냉장고에서, 복수의 저장실(32,34,36) 중 냉동실(36)은 냉각속도를 고려하여 간접냉각방식으로 구현하고 나머지 냉장실(32)과 변온실(34)은 직접냉각방식으로 구현함으로서 각 저장실(32,34,36)에 흐르는 냉매의 방향을 제어하기 위한 삼방밸브(50)의 개수를 줄인 경우에 있어서의 운전제어패턴을 설명한 것이다.The present invention provides a refrigerator having a plurality of storage compartments (32, 34, 36) and a plurality of corresponding evaporators (38, 40, 42) to independently cool the plurality of storage compartments (32, 34, 36), Among the plurality of storage compartments 32, 34, 36, the freezing compartment 36 is implemented in an indirect cooling manner in consideration of the cooling rate, and the remaining refrigerating compartment 32 and the variable temperature chamber 34 are implemented in a direct cooling manner. The operation control pattern in the case where the number of the three-way valves 50 for controlling the direction of the refrigerant flowing in the 34, 36 is reduced.

먼저, 사용자가 냉장실(32)과 변온실(34) 및 냉동실(36)의 제어목표온도(Trset, Tmset, Tfset)를 설정하면, 냉장실(32)과 변온실(34) 및 냉동실(36)의 온도를 냉장실 온도센서(39)와 변온실 온도센서(41) 및 냉동실 온도센서(43)에서 감 지하여 압축기(46)의 운전조건인가를 판단한다(S100~S110).First, when the user sets the control target temperatures (Trset, Tmset, Tfset) of the refrigerating chamber 32, the variable temperature chamber 34, and the freezing chamber 36, the refrigerating chamber 32, the variable temperature chamber 34, and the freezing chamber 36 The temperature is sensed by the refrigerating compartment temperature sensor 39, the temperature changing room temperature sensor 41, and the freezing compartment temperature sensor 43 to determine whether the compressor 46 is in an operating condition (S100 to S110).

압축기(46)의 운전조건은 고내온도에 따라 결정되는데, 냉장실 온도센서(39)에서 감지된 냉장실 온도(Tr)가 냉장실 설정온도(Trset)보다 높거나 변온실 온도센서(41)에서 감지된 변온실 온도(Tm)가 변온실 설정온도(Tmset)보다 높은 경우 또는 냉동실 온도센서(43)에서 감지된 냉동실 온도(Tf)가 냉동실 설정온도(Tfset)보다 높은 경우이다.The operating conditions of the compressor 46 are determined according to the internal temperature of the compressor, wherein the refrigerator compartment temperature Tr detected by the refrigerator compartment temperature sensor 39 is higher than the refrigerator compartment set temperature Trset or the temperature detected by the transformer compartment temperature sensor 41. It is a case where the greenhouse temperature Tm is higher than the temperature change room set temperature Tmset or the freezer compartment temperature Tf detected by the freezer compartment temperature sensor 43 is higher than the freezer compartment set temperature Tfset.

냉장실 설정온도(Trset)는 냉장실(32)의 제어목표온도이고, 변온실 설정온도(Tmset)는 변온실(34)의 제어목표온도이며, 냉동실 설정온도(Tfset)는 냉동실(36)의 제어목표온도로서, 사용자가 온도설정부(60)의 온도조절기나 버튼 등을 통해 다단계로 조절할 수 있다.The refrigerating chamber set temperature Trset is the control target temperature of the refrigerating chamber 32, the variable temperature chamber set temperature Tmset is the control target temperature of the temperature changing chamber 34, and the freezer compartment set temperature Tfset is the control target of the freezing chamber 36. As the temperature, the user may adjust in multiple stages through a temperature controller or a button of the temperature setting unit 60.

압축기(46)의 운전조건이면, 제어부(62)는 먼저 냉동실 온도(Tf)가 냉동실 설정온도(Tfset)보다 높은가를 판단하여(S120) 냉동실 온도(Tf)가 냉동실 설정온도(Tfset)보다 높으면 압축기(46)를 온(운전)시키고, 응축팬(49)과 냉동실팬(44)을 온(가동)시키며, 삼방밸브(50)를 제어하여 냉매패스 "F"측 제1모세관(52)을 오픈시키고 냉매패스 "E"측 제2모세관(54)을 클로즈시키는 조건으로 냉동실 증발기(42)와 냉장실 증발기(38) 방향으로 냉매를 보낸다.If the operating condition of the compressor 46, the control unit 62 first determines whether the freezer compartment temperature Tf is higher than the freezer compartment set temperature Tfset (S120) and if the freezer compartment temperature Tf is higher than the freezer compartment set temperature Tfset, Turn on (operation) 46, turn on (operate) the condensation fan 49 and the freezer compartment 44, and control the three-way valve 50 to open the first capillary tube 52 on the refrigerant path "F" side. The refrigerant is sent toward the freezer compartment evaporator 42 and the refrigerator compartment evaporator 38 under the condition that the refrigerant path “E” side second capillary tube 54 is closed.

이때, 상기 압축기(46)의 운전과 동시에 응축팬(49)과 냉동실팬(44)이 온(가동)되어 냉동실(36)을 간접냉각방식을 이용한 강제대류로 빠르게 냉각시킨다(S130).At this time, the condenser fan 49 and the freezing compartment fan 44 are turned on (operation) at the same time as the operation of the compressor 46 to quickly cool the freezing compartment 36 by forced convection using an indirect cooling method (S130).

상기 냉동실(36)의 냉각 중에 냉동실 온도센서(43)를 통해 냉동실 온도(Tf) 가 설정온도(Tfset)에 도달하였는지를 체크하여 냉동실(36) 온도조건을 만족하면(S140), 제어부(62)는 냉장실 온도(Tr)가 냉장실 설정온도(Trset)보다 높은가를 판단하여(S150) 냉장실 온도(Tr)가 냉장실 설정온도(Trset)보다 높으면 압축기(46)의 운전상태에서 삼방밸브(50)를 냉동실(36)의 냉각과 동일하게 냉매패스 "F"측 제1모세관(52)을 오픈시키고 냉매패스 "E"측 제2모세관(54)을 클로즈시키는 조건으로 냉동실 증발기(42)와 냉장실 증발기(38) 방향으로 냉매를 보낸다.During the cooling of the freezer compartment 36, the freezer compartment temperature sensor 43 checks whether the freezer compartment temperature Tf has reached the set temperature Tfset and satisfies the freezer compartment 36 temperature condition (S140). It is determined whether the refrigerator compartment temperature (Tr) is higher than the refrigerator compartment set temperature (Trset) (S150). If the refrigerator compartment temperature (Tr) is higher than the refrigerator compartment set temperature (Trset), the three-way valve (50) is operated in the freezer compartment (operation state of the compressor 46). The freezer compartment evaporator 42 and the refrigerator compartment evaporator 38 under the condition of opening the refrigerant path "F" side first capillary tube 52 and closing the refrigerant path "E" side second capillary tube 54 in the same manner as the cooling of 36). To send the refrigerant in the direction.

상기 압축기(46)의 운전 시, 응축팬(49)은 온(가동)상태를 유지하지만 냉동실팬(44)은 오프(정지)되어 냉장실(32)과 냉동실(36)은 직접냉각방식을 이용한 자연대류로 천천히 냉각된다(S160).When the compressor 46 is operated, the condensation fan 49 is kept on (operational), but the freezer compartment fan 44 is off (stopped) so that the refrigerating compartment 32 and the freezing compartment 36 are naturally cooled using a direct cooling method. Slowly convection (S160).

이러한 냉장실(32)의 냉각 중에 냉동실 증발기(42)에도 냉매가 흐르게 되나 이 경우 냉동실팬(44)은 오프된 상태이므로 냉동실(44)의 냉각속도는 느리게 진행되고 이에 따라 일시적으로 냉동실(44)에 과냉이 발생할 수는 있으나, 이 경우 냉동 보관되는 식품이 더 낮은 온도에서 보관되더라도 동일한 신선도를 보임으로서 냉동실(36)의 과냉은 큰 문제가 되지 않는다.During the cooling of the refrigerating compartment 32, the refrigerant also flows in the freezer compartment evaporator 42. In this case, since the freezing compartment fan 44 is in an off state, the cooling rate of the freezing compartment 44 proceeds slowly, and thus is temporarily transferred to the freezing compartment 44. Although subcooling may occur, in this case, the subcooling of the freezer compartment 36 is not a big problem since the foods stored in the frozen product are stored at a lower temperature.

이후, 냉장실(32)의 냉각 중에 냉장실 온도센서(39)를 통해 냉장실 온도(Tr)가 설정온도(Trset)에 도달하였는지를 체크하여 냉장실(32) 온도조건을 만족하면(S170), 제어부(62)는 변온실 온도(Tm)가 변온실 설정온도(Tmset)보다 높은가를 판단하여(S180) 변온실 온도(Tm)가 변온실 설정온도(Tmset)보다 높으면 압축기(46)의 운전상태에서 삼방밸브(50)를 제어하여 냉매패스 "E"측 제2모세관(54)을 오픈시키고 냉매패스 "F"측 제1모세관(52)을 클로즈시키는 조건으로 변온실 증발기(40) 방 향으로 냉매를 보낸다.Subsequently, if the refrigerator compartment temperature Tr reaches the set temperature Trset through the refrigerator compartment temperature sensor 39 during the cooling of the refrigerator compartment 32, and satisfies the refrigerator compartment 32 temperature condition (S170), the controller 62. It is determined whether or not the temperature room temperature (Tm) is higher than the room temperature set temperature (Tmset) (S180), if the temperature chamber temperature (Tm) is higher than the room temperature set temperature (Tmset), the three-way valve ( 50, the refrigerant path "E" side of the second capillary tube 54 is opened and the refrigerant path "F" side of the first capillary tube 52 is closed and the refrigerant is sent in the direction of the temperature chamber evaporator 40.

상기 압축기(46)의 운전 시, 응축팬(49)은 온(가동)상태를 유지하지만 냉동실팬(44)은 오프(정지)되어 변온실(34)은 직접냉각방식을 이용한 자연대류로 천천히 냉각된다(S190).When the compressor 46 is operated, the condensation fan 49 is kept on (operational), but the freezing chamber fan 44 is off (stopped) so that the variable temperature chamber 34 is slowly cooled by natural convection using a direct cooling method. It becomes (S190).

상기 변온실(34)의 냉각 중에 변온실 온도센서(41)를 통해 변온실 온도(Tm)가 설정온도(Tmset)에 도달하였는지를 체크하여 변온실(34) 온도조건을 만족하면(S200), 제어부(62)는 냉장실(32)과 변온실(34) 및 냉동실(36)의 온도를 냉장실 온도센서(39)와 변온실 온도센서(41) 및 냉동실 온도센서(43)에서 감지하여 압축기(46)의 운전오프조건인가를 판단한다(S210).If the temperature changing room temperature Tm reaches the set temperature Tmset through the temperature changing room temperature sensor 41 during the cooling of the temperature changing room 34 and satisfies the temperature condition of the temperature changing room 34 (S200), the controller The compressor 62 detects the temperatures of the refrigerating chamber 32, the temperature changing chamber 34, and the freezing chamber 36 by the refrigerating chamber temperature sensor 39, the temperature changing chamber temperature sensor 41, and the freezing chamber temperature sensor 43. It is determined whether the operation off condition of (S210).

압축기(46)의 운전오프조건은 고내온도에 따라 결정되는데, 냉장실 온도센서(39)에서 감지된 냉장실 온도(Tr)가 냉장실 설정온도(Trset)보다 낮거나 변온실 온도센서(41)에서 감지된 변온실 온도(Tm)가 변온실 설정온도(Tmset)보다 낮은 경우 또는 냉동실 온도센서(43)에서 감지된 냉동실 온도(Tf)가 냉동실 설정온도(Tfset)보다 낮은 경우이다.The operation off condition of the compressor 46 is determined according to the internal temperature of the compressor 46, and the refrigerator compartment temperature Tr sensed by the refrigerator compartment temperature sensor 39 is lower than the refrigerator compartment set temperature Trset or detected by the variable temperature chamber temperature sensor 41. This is the case where the temperature change room temperature Tm is lower than the temperature change room set temperature Tmset or when the freezer compartment temperature Tf detected by the freezer compartment temperature sensor 43 is lower than the freezer compartment set temperature Tfset.

압축기(46)의 운전오프조건이면, 제어부(62)의 제어에 의해 압축기(46)와 응축팬(49), 냉동실팬(44)이 오프되어 가동을 멈춘다(S220).If the operation condition of the compressor 46 is off, the compressor 46, the condensation fan 49, and the freezing chamber fan 44 are turned off under the control of the control unit 62 (S220).

한편, 도 7A 및 도 7B에서는 복수의 저장실을 냉장실(32), 변온실(34), 냉동실(36)의 순서로 냉각하는 것을 예로 들어 설명하였으나, 냉각순서는 필요에 따라 바뀔 수 있다.7A and 7B illustrate the cooling of the plurality of storage chambers in the order of the refrigerating chamber 32, the temperature changing chamber 34, and the freezing chamber 36 as an example, but the cooling order may be changed as necessary.

상기의 설명에서와 같이, 본 발명에 의한 냉장고 및 그 운전제어방법에 의하면, 복수의 저장실에 대응하는 복수의 증발기를 가지는 냉장고의 싸이클 구성에 있어 복수의 저장실 중 냉동실을 간접냉각방식으로 구현하면서 각각의 증발기에 흐르는 냉매 제어를 위한 삼방밸브의 개수를 1개로 줄이고, 이에 따라 각 증발기에 연결되는 모세관의 개수도 줄임으로서 재료비 감소와 제품 양산성을 개선할 수 있다는 효과가 있다.As described above, according to the refrigerator and its operation control method according to the present invention, in the cycle configuration of the refrigerator having a plurality of evaporators corresponding to the plurality of storage compartments, each of the plurality of storage compartments while implementing the indirect cooling method, respectively By reducing the number of three-way valve for controlling the refrigerant flowing to the evaporator of 1, thereby reducing the number of capillaries connected to each evaporator has the effect that it is possible to reduce the material cost and product productivity.

또한, 본 발명은 복수의 저장실 중 냉동실의 냉각방식을 직접냉각방식에서 간접냉각방식으로 변경하여 냉동실의 냉각효과를 높일 수 있다.In addition, the present invention can increase the cooling effect of the freezer compartment by changing the cooling method of the freezer compartment of the plurality of storage compartments from direct cooling to indirect cooling.

상기에서 설명한 것은 본 발명에 의한 냉장고 및 그 운전제어방법을 실시하기 위한 하나의 실시예에 불과한 것으로, 본 발명은 상술한 실시예에 한정되지 않고, 본 발명의 기술적 사상 내에서 당 분야의 통상의 지식을 가진 자에 의하여 여러 가지 변형이 가능함은 물론이다.What has been described above is only one embodiment for implementing the refrigerator and its operation control method according to the present invention, the present invention is not limited to the above-described embodiment, it is within the technical spirit of the present invention Of course, various modifications are possible by those who have knowledge.

Claims (15)

복수의 저장실에 대응하는 복수의 증발기를 구비하고,A plurality of evaporators corresponding to the plurality of storage chambers, 상기 복수의 증발기 중 두 개 이상의 증발기는 직렬로 연결하고, 나머지 증발기는 직렬로 연결된 두 개의 증발기에 병렬로 연결하여 냉매유로를 형성하는 것을 특징으로 하는 냉장고.At least two evaporators of the plurality of evaporators are connected in series, the remaining evaporator is characterized in that the refrigerant flow path is formed by connecting in parallel to the two evaporators connected in series. 제 1항에 있어서,The method of claim 1, 상기 복수의 저장실을 직접 및 간접냉각방식의 조합으로 냉각하기 위해 복수의 증발기에 흐르는 냉매의 방향을 제어하는 제어부를 더 포함하는 냉장고.And a controller configured to control a direction of the refrigerant flowing through the plurality of evaporators to cool the plurality of storage compartments by a combination of direct and indirect cooling methods. 제 2항에 있어서,The method of claim 2, 상기 복수의 저장실 중 일부 저장실을 간접냉각방식으로 냉각하기 위해 복수의 증발기 중 일부 증발기에 팬을 설치하는 것을 특징으로 하는 냉장고.And a fan is installed in some of the plurality of evaporators to cool some of the plurality of storage compartments by indirect cooling. 제 2항에 있어서,The method of claim 2, 상기 냉매유로에는 복수의 증발기에 흐르는 냉매의 방향을 조절하기 위한 냉매방향조절장치를 더 설치하며,The refrigerant flow path further comprises a refrigerant direction control device for adjusting the direction of the refrigerant flowing in the plurality of evaporators, 상기 제어부는 각각의 저장실 온도에 기초하여 복수의 저장실을 독립적으로 냉각시키도록 냉매방향조절장치의 작동을 제어하는 것을 특징으로 하는 냉장고.The control unit is a refrigerator, characterized in that for controlling the operation of the refrigerant direction control device to independently cool the plurality of storage compartments based on the respective storage compartment temperature. 제 4항에 있어서,The method of claim 4, wherein 상기 냉매방향조절장치는 냉매가 유입되는 복수의 증발기측 입구에 설치된 하나의 삼방밸브인 것을 특징으로 하는 냉장고.The refrigerant direction control device is a refrigerator, characterized in that one three-way valve installed at the inlet of the plurality of evaporator side in which the refrigerant is introduced. 복수의 저장실에 대응하는 복수의 증발기를 구비하고,A plurality of evaporators corresponding to the plurality of storage chambers, 상기 복수의 저장실을 직접 및 간접냉각방식의 조합으로 냉각하기 위해 복수의 증발기에 흐르는 냉매의 방향을 제어하는 제어부를 포함하는 냉장고.And a control unit controlling a direction of the refrigerant flowing through the plurality of evaporators to cool the plurality of storage compartments by a combination of direct and indirect cooling methods. 복수의 저장실에 대응하는 복수의 증발기를 구비한 냉장고에 있어서,A refrigerator provided with a plurality of evaporators corresponding to a plurality of storage rooms, 상기 복수의 저장실 중 일부 저장실을 나머지 저장실과 다른 냉각방식으로 제어하는 제어부; 및A control unit which controls some of the plurality of storage compartments with a different cooling method from the remaining storage compartments; And 상기 일부 저장실을 나머지 저장실과 다른 냉각방식으로 제어하기 위해 복수의 증발기에 흐르는 냉매의 방향을 조절하는 냉매방향조절장치를 포함하는 냉장고.And a refrigerant direction control device for controlling the direction of the refrigerant flowing through the plurality of evaporators to control the some storage compartments in a different cooling manner from the other storage compartments. 제 7항에 있어서,The method of claim 7, wherein 상기 복수의 증발기 중 두 개 이상의 증발기는 직렬로 연결하고, 나머지 증발기는 직렬로 연결된 두 개의 증발기에 병렬로 연결하여 냉매유로를 형성하는 것을 특징으로 하는 냉장고.At least two evaporators of the plurality of evaporators are connected in series, the remaining evaporator is characterized in that the refrigerant flow path is formed by connecting in parallel to the two evaporators connected in series. 제 7항에 있어서,The method of claim 7, wherein 상기 일부 저장실의 냉각방식은 간접냉각방식인 것을 특징으로 하는 냉장고.The refrigerator of the some storage compartment is characterized in that the indirect cooling method. 제 7항에 있어서,The method of claim 7, wherein 상기 일부 저장실은 냉동실인 것을 특징으로 하는 냉장고.And a part of the storage compartment is a freezer compartment. 복수의 저장실에 대응하는 복수의 증발기를 구비하고,A plurality of evaporators corresponding to the plurality of storage chambers, 상기 복수의 증발기 중 두 개 이상의 증발기는 직렬로 연결하고, 나머지 증발기는 직렬로 연결된 두 개의 증발기에 병렬로 연결하여 냉매유로를 형성하며,Two or more evaporators of the plurality of evaporators are connected in series, and the remaining evaporators are connected in parallel to two evaporators connected in series to form a refrigerant flow path. 상기 복수의 저장실을 직접 및 간접냉각방식의 조합으로 냉각하기 위해 직ㆍ병렬로 연결된 복수의 증발기에 흐르는 냉매의 방향을 제어하는 제어부를 포함하는 냉장고.And a control unit configured to control a direction of the refrigerant flowing in the plurality of evaporators connected in series and parallel to cool the plurality of storage compartments by a combination of direct and indirect cooling methods. 제 11항에 있어서,The method of claim 11, 상기 복수의 저장실 중 일부 저장실을 간접냉각방식으로 냉각하기 위해 복수의 증발기 중 일부 증발기에 팬을 설치하며,In order to cool some of the plurality of storage compartments by indirect cooling, a fan is installed in some of the plurality of evaporators, 상기 제어부는 일부 저장실 온도에 기초하여 일부 저장실을 독립적으로 냉각시키도록 팬의 작동을 제어하는 것을 특징으로 하는 냉장고.And the control unit controls an operation of the fan to independently cool some of the storage compartments based on some of the storage compartment temperatures. 복수의 저장실에 대응하는 복수의 증발기를 구비한 냉장고의 운전제어방법에 있어서,In the operation control method of the refrigerator having a plurality of evaporators corresponding to the plurality of storage rooms, 상기 복수의 저장실 온도를 감지하는 단계;Sensing the plurality of storage room temperatures; 감지된 복수의 저장실 온도를 미리 정해진 설정온도와 비교하여 상기 복수의 저장실 온도가 설정온도범위를 벗어나면 각각의 저장실 온도에 기초하여 상기 복수의 증발기에 흐르는 냉매의 방향을 제어하는 단계; 및Controlling the direction of the refrigerant flowing through the plurality of evaporators based on the respective storage chamber temperatures when the plurality of storage chamber temperatures are out of a set temperature range by comparing the sensed plurality of storage chamber temperatures with a predetermined set temperature; And 상기 복수의 증발기에 흐르는 냉매의 방향제어에 따라 복수의 저장실을 직접 및 간접냉각방식의 조합으로 냉각하는 단계;를Cooling the plurality of storage compartments in a combination of direct and indirect cooling methods according to the direction control of the refrigerant flowing through the plurality of evaporators; 포함하는 냉장고의 운전제어방법.Operation control method of the refrigerator comprising. 제 13항에 있어서,The method of claim 13, 상기 복수의 저장실을 직접 및 간접냉각방식의 조합으로 냉각하는 단계는,Cooling the plurality of storage compartments by a combination of direct and indirect cooling, 각각의 저장실 온도에 기초하여 복수의 저장실을 순차적으로 냉각하며,Cooling the plurality of reservoirs sequentially based on the respective reservoir temperatures, 순차적으로 냉각되는 상기 복수의 저장실 중 일부 저장실을 간접냉각방식으로 냉각하고, 나머지 저장실을 직접냉각방식으로 냉각하는 것을 특징으로 하는 냉장고의 운전제어방법.The operation control method of the refrigerator, characterized in that the cooling of some of the plurality of storage chambers sequentially cooled by the indirect cooling method, and the remaining storage chamber by the direct cooling method. 제 13항에 있어서,The method of claim 13, 상기 복수의 저장실을 직접 및 간접냉각방식의 조합으로 냉각하는 단계는,Cooling the plurality of storage compartments by a combination of direct and indirect cooling, 일부 저장실을 간접냉각방식으로 냉각하기 위해 일부 저장실에 대응하는 일부 증발기에 설치된 팬의 작동을 제어하는 것을 특징으로 하는 냉장고의 운전제어 방법.The operation control method of the refrigerator, characterized in that for controlling the operation of the fan installed in some evaporator corresponding to the part of the storage compartment in order to cool some storage compartments by indirect cooling.
KR1020060024779A 2006-03-17 2006-03-17 Refrigerator and method for control operating thereof KR101140711B1 (en)

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US10077932B2 (en) 2015-03-11 2018-09-18 Samsung Electronics Co., Ltd. Refrigerator
US10254036B2 (en) 2014-08-21 2019-04-09 Samsung Electronics Co., Ltd. Refrigerator
CN110200486A (en) * 2018-09-27 2019-09-06 华帝股份有限公司 Electric steam box capable of rapidly switching fire and control method thereof
KR20190127027A (en) * 2018-05-03 2019-11-13 엘지전자 주식회사 Refrigerator

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CN103591749B (en) * 2013-11-25 2015-08-19 合肥美菱股份有限公司 A kind of wind-cooling electric refrigerator and refrigerating method thereof with three-circulation refrigerating system
CN110822788A (en) * 2019-11-27 2020-02-21 合肥美科制冷技术有限公司 Refrigerating system of refrigerator
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KR100447199B1 (en) * 2002-07-24 2004-09-04 엘지전자 주식회사 Direct cooling type refrigerator
KR20050023788A (en) * 2003-09-02 2005-03-10 엘지전자 주식회사 A temperature control apparatus of refrigerator

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KR101395112B1 (en) * 2012-06-04 2014-05-19 위니아만도 주식회사 Refrigerator
US10254036B2 (en) 2014-08-21 2019-04-09 Samsung Electronics Co., Ltd. Refrigerator
US10077932B2 (en) 2015-03-11 2018-09-18 Samsung Electronics Co., Ltd. Refrigerator
KR20190127027A (en) * 2018-05-03 2019-11-13 엘지전자 주식회사 Refrigerator
CN110200486A (en) * 2018-09-27 2019-09-06 华帝股份有限公司 Electric steam box capable of rapidly switching fire and control method thereof

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KR101140711B1 (en) 2012-05-03
CN100520241C (en) 2009-07-29

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