KR20110072687A - Refrigerator - Google Patents

Refrigerator Download PDF

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Publication number
KR20110072687A
KR20110072687A KR1020090129729A KR20090129729A KR20110072687A KR 20110072687 A KR20110072687 A KR 20110072687A KR 1020090129729 A KR1020090129729 A KR 1020090129729A KR 20090129729 A KR20090129729 A KR 20090129729A KR 20110072687 A KR20110072687 A KR 20110072687A
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KR
South Korea
Prior art keywords
refrigerant
cooling cycle
cooling
condenser
refrigerator
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KR1020090129729A
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Korean (ko)
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전용덕
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주식회사 대우일렉트로닉스
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Priority to KR1020090129729A priority Critical patent/KR20110072687A/en
Publication of KR20110072687A publication Critical patent/KR20110072687A/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
    • F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
    • 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
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • F25B40/02—Subcoolers
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/37—Capillary tubes
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02731—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one three-way valve
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/06—Several compression cycles arranged in parallel

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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

PURPOSE: A refrigerator is provided to keep cryogenic compartment as super low temperature since radiation of a second cooling cycle uses waste cold energy of a firs cooling cycle and be maximized. CONSTITUTION: The refrigerator (A) includes: a main body(100); first and second cooling cycles(200,300); and an heat exchanging unit(400). The main body partitions to a refrigerator compartment(110), a freezer compartment(120), and a super low temperature room(130). The first cooling cycle cools the refrigerator compartment and the freezer compartment. The second cooling cycle cools the super low temperature room. The heat exchanging unit cools the refrigerant of the second cooling cycle with the refrigerant of the first cooling cycle.

Description

냉장고{REFRIGERATOR}Refrigerator {REFRIGERATOR}

본 발명은 냉장고에 관한 것으로, 더욱 상세하게는 초저온실을 구비하는 냉장고에 관한 것이다.The present invention relates to a refrigerator, and more particularly, to a refrigerator having an ultra low temperature room.

일반적으로 냉장고는 냉각 사이클을 이용하여 냉장고 내부의 공기를 냉각시킴에 따라 내부에 저장된 식품(이하, '저장물')을 냉장 또는 냉동 보관하여 변질되지 않고 장시간 보관하기 위한 것이다.In general, the refrigerator cools the air inside the refrigerator using a cooling cycle to store food (hereinafter, 'stored matter') stored therein for a long time without deterioration by refrigeration or freezing.

이러한 냉장고는 내부에 냉장실과 냉동실(이하, '저장실')로 분리된 수납공간을 형성하는 본체와, 상기 본체의 일측에 장착되어 저장실을 개폐하는 도어로 이루어지며, 상기 본체에는 압축기, 응축기 및 증발기 등으로 구성되는 냉동사이클을 형성하는 기계장치가 구비되어 있다.The refrigerator includes a main body forming a storage space separated into a refrigerating chamber and a freezing chamber (hereinafter, referred to as a 'storage chamber'), and a door mounted to one side of the main body to open and close the storage chamber. The main body includes a compressor, a condenser, and an evaporator. There is provided a mechanism for forming a refrigeration cycle composed of such.

상기 냉각 사이클은 도 1에 도시된 바와 같이, 냉매를 압축하는 압축기(10)와, 이 압축기(10)에 의해 압축된 냉매를 응축하는 응축기(20)와, 이 응축기(20)를 통과한 냉매의 온도 및 압력을 냉장실의 적정온도에 대응되게 변화시켜주는 팽창 밸브(30)와 이 팽창 밸브(30)를 통과한 냉매에 의해 증발작용을 하면서 냉장실 및 냉동실을 냉각시켜 주는 증발기(40)와 이 증발기(40)를 통과한 냉매를 기상 냉매와 액상 냉매로 분리하는 기액 분리기(50)로 구성된다. As shown in FIG. 1, the cooling cycle includes a compressor 10 compressing a refrigerant, a condenser 20 condensing the refrigerant compressed by the compressor 10, and a refrigerant passing through the condenser 20. And an evaporator 40 which cools the refrigerating compartment and the freezing compartment while evaporating by an expansion valve 30 for changing the temperature and pressure of the refrigerator according to the proper temperature of the refrigerating compartment and the refrigerant passing through the expansion valve 30. It is composed of a gas-liquid separator 50 for separating the refrigerant passing through the evaporator 40 into a gaseous refrigerant and a liquid refrigerant.

따라서 전원이 인가되면 압축기(10)의 작동에 따라 압축된 냉매가 응축기(20)에서 응축된 다음 팽창 밸브(30)를 통과하면서 적정온도에 대응하게 온도와 압력이 변화되고 이 변화된 냉매는 계속해서 증발기(40)를 통과하며 증발작용을 통해 냉장실의 적정온도(3℃)와 냉동실의 적정온도(-18℃)가 되도록 냉각하게 된다.Therefore, when the power is applied, the compressed refrigerant is condensed in the condenser 20 and then passes through the expansion valve 30 when the power is applied, and the temperature and pressure are changed to correspond to the appropriate temperature. It passes through the evaporator 40 and cools to an appropriate temperature (3 ° C.) of the refrigerating compartment and an appropriate temperature (−18 ° C.) of the freezing compartment through the evaporation action.

즉, 증발기(40)에서 증발된 냉매는 기액 분리기(60)에서 기상 냉매와 액상 냉매로 분리되어 압축기(10)로 공급되고 압축기(10)에서 다시 압축되어 상술한 냉각 사이클을 통해 반복하게 된다. That is, the refrigerant evaporated in the evaporator 40 is separated into a gaseous refrigerant and a liquid refrigerant in the gas-liquid separator 60, supplied to the compressor 10, and compressed again by the compressor 10 to be repeated through the above-described cooling cycle.

이러한 종래의 냉장고는 하나의 증발기와 하나의 팽창밸브 또는 모세관으로 구성되어 사용자가 원하는 적정한 냉각 환경을 제공하지 못하는 문제점이 있다.This conventional refrigerator is composed of one evaporator and one expansion valve or capillary tube, which does not provide a proper cooling environment desired by the user.

즉, 종래의 냉장고는 둘 이상의 냉각 사이클과 둘 이상의 팽창밸브 및 증발기를 구비하여 초저온 냉동이 가능한 구조가 개시된 바 없었다. That is, the conventional refrigerator has not been disclosed a structure capable of cryogenic freezing having two or more cooling cycles and two or more expansion valves and evaporators.

본 발명은 전술한 종래의 제반 문제점을 해결하기 위하여 안출된 것으로, 본 발명의 목적은 냉장실과 냉동실을 순환한 냉매의 폐냉열에 의해 초저온실의 냉매를 과냉각하도록 구성되어 초저온 냉각이 가능한 냉장고에 관한 것이다.The present invention has been made to solve the above-mentioned conventional problems, an object of the present invention relates to a refrigerator that is configured to supercool the refrigerant of the cryogenic chamber by the waste cooling heat of the refrigerant circulated in the refrigerating compartment and the freezer compartment will be.

상기와 같은 목적을 달성하기 위한 본 발명의 냉장고는, 냉장실, 냉동실, 초저온실로 분할 형성되는 본체; 상기 냉장실과 냉동실을 냉각하는 제1냉각사이클; 상기 초저온실을 냉각하는 제2냉각사이클; 및 상기 제1냉각사이클의 냉매로 제2냉각사이클의 냉매를 냉각시키는 열교환부;를 포함하는 것을 특징으로 한다.Refrigerator of the present invention for achieving the above object, the refrigerator compartment, the freezing chamber, the cryogenic chamber divided into a body; A first cooling cycle for cooling the refrigerating compartment and the freezing compartment; A second cooling cycle for cooling the cryogenic chamber; And a heat exchange part for cooling the refrigerant of the second cooling cycle with the refrigerant of the first cooling cycle.

그리고, 상기 제2냉각사이클의 냉매는 상기 제1냉각사이클의 냉매보다 낮은 증발온도를 가지는 것이 바람직하다.The refrigerant of the second cooling cycle may have a lower evaporation temperature than the refrigerant of the first cooling cycle.

또한, 상기 제1냉각사이클은, 냉매를 압축하는 제1압축기; 압축된 냉매를 저온 고압의 냉매로 응축하는 제1응축기; 응축된 냉매를 증발시켜 냉장실을 냉각하는 제1증발기; 응축된 냉매를 증발시켜 냉동실을 냉각하는 제2증발기; 및 상기 제1응축기의 응축 냉매를 제1,2증발기로 각각 전달하는 삼방밸브;를 포함하는 것이 바람직하다.In addition, the first cooling cycle, the first compressor for compressing the refrigerant; A first condenser for condensing the compressed refrigerant into a refrigerant having a low temperature and high pressure; A first evaporator cooling the refrigerating compartment by evaporating the condensed refrigerant; A second evaporator configured to cool the freezing compartment by evaporating the condensed refrigerant; And a three-way valve transferring the condensed refrigerant of the first condenser to the first and second evaporators, respectively.

그리고, 상기 삼방밸브와 제1증발기 사이에는 모세관이 설치되며, 상기 삼방밸브와 제2증발기 사이에는 제1팽창밸브가 설치되는 것이 바람직하다.A capillary tube is installed between the three-way valve and the first evaporator, and a first expansion valve is installed between the three-way valve and the second evaporator.

한편, 상기 제2냉각사이클은, 냉매를 압축하는 제2압축기; 압축된 냉매를 저 온 고압의 냉매로 응축하는 제2응축기; 상기 제2응축기의 냉매를 팽창시키는 제2팽창밸브; 및 응축된 냉매를 증발시켜 냉장실을 냉각하는 제3증발기;를 포함하는 것이 바람직하다.On the other hand, the second cooling cycle, the second compressor for compressing the refrigerant; A second condenser for condensing the compressed refrigerant into a low temperature and high pressure refrigerant; A second expansion valve for expanding the refrigerant of the second condenser; And a third evaporator cooling the refrigerating compartment by evaporating the condensed refrigerant.

또한, 상기 열교환부는 코일형태의 열교환파이프로 구성되되, 상기 열교환파이프는 제1,2증발기의 냉매를 전달받아 상기 제2응축기를 과 냉각시키도록 설치되는 것이 바람직하다.In addition, the heat exchange unit is composed of a heat exchange pipe of the coil shape, the heat exchange pipe is preferably installed to overcool the second condenser by receiving the refrigerant of the first and second evaporators.

본 발명에 따른 냉장고에 따르면, 냉장실과 냉동실을 순환하는 제1냉각사이클의 냉매가 열교환부로 전달되어 초저온실을 순환하는 제2냉각사이클의 냉매를 과 냉각하도록 구성되어 초저온 냉각이 가능한 효과가 있다.According to the refrigerator according to the present invention, the refrigerant of the first cooling cycle circulating the refrigerating compartment and the freezing compartment is delivered to the heat exchange part to be configured to overcool the refrigerant of the second cooling cycle circulating the ultra low temperature chamber, thereby enabling ultra low temperature cooling.

즉, 제1냉각사이클의 폐냉열을 이용하여 제2냉각사이클의 방열을 극대화하여 제2냉각사이클을 이용한 초저온실을 초저온으로 유지할 수 있다.That is, by maximizing the heat dissipation of the second cooling cycle by using the waste cooling heat of the first cooling cycle, it is possible to maintain the cryogenic chamber using the second cooling cycle at an extremely low temperature.

또한, 제1응축기를 거친 냉매를 모세관을 이용하여 냉장실을 냉각하므로 냉매압력 드롭을 통한 냉장실의 정온 유지시 유리하며, 제1응축기를 거친 냉매는 제1팽창밸브의 개도 변경을 통해 냉동실 냉매의 온도를 가변시킬 수 있는 장점이 있다.In addition, the refrigerant passing through the first condenser cools the refrigerating chamber by using a capillary tube, which is advantageous for maintaining the constant temperature of the refrigerating chamber through the refrigerant pressure drop. There is an advantage that can be changed.

또한, 냉장실·냉동실과 초저온실이 각각 별도로 냉각사이클을 구비하여 냉동·냉각 효율이 향상되는 효과가 있다.In addition, the refrigerating chamber, the freezing chamber and the cryogenic chamber are each provided with a separate cooling cycle, thereby improving the freezing and cooling efficiency.

이하, 본 발명의 바람직한 실시 예를 첨부된 도면을 참조하여 상세하게 설명 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명에 따른 냉장고를 도시한 정단면도이다.2 is a front sectional view showing a refrigerator according to the present invention.

도 1에 도시한 바와 같이, 본 발명에 따른 냉장고(A)는, 외형을 형성하는 본체(100), 상기 본체에 설치되는 제1,2냉각사이클(200,300) 및 상기 제1냉각사이클(200)의 냉매로 제2냉각사이클(300)의 냉매를 냉각시키는 열교환부(400)를 포함한다.As shown in FIG. 1, the refrigerator A according to the present invention includes a main body 100 forming an outer shape, first and second cooling cycles 200 and 300 installed on the main body, and the first cooling cycle 200. It includes a heat exchange unit 400 for cooling the refrigerant of the second cooling cycle 300 with the refrigerant of the.

이때, 상기 제2냉각사이클(300)의 냉매는 상기 제1냉각사이클(200)의 냉매보다 낮은 증발온도를 가지는 것이 바람직하다. 이로 인해 상기 제2냉각사이클(300)은 초저온 냉각을 할 수 있는 것이다.At this time, the refrigerant of the second cooling cycle 300 preferably has a lower evaporation temperature than the refrigerant of the first cooling cycle (200). For this reason, the second cooling cycle 300 is capable of cryogenic cooling.

먼저, 상기 본체(100)는 냉장실(110), 냉동실(120), 초저온실(130) 및 기계실(140)로 분할 형성된다.First, the main body 100 is divided into a refrigerating chamber 110, a freezing chamber 120, a cryogenic chamber 130 and a machine chamber 140.

또한, 상기 제1냉각사이클(200)은 냉매를 압축하는 제1압축기(210)와, 상기 제1압축기(210)를 거친 고압의 냉매를 공급받아 열을 방출 및 응축시켜 저온 고압의 냉매로 응축하는 제1응축기(220)와, 냉매의 흡열 작용에 의해 증발시켜 상기 냉장실(110)을 냉각하는 제1증발기(230)와, 냉매의 흡열 작용에 의해 증발시켜 상기 냉동실(120)을 냉각하는 제2증발기(240) 및 상기 제1응축기(210)의 응축 냉매를 제1,2증발기(230,240)로 각각 분할하여 전달하는 삼방밸브(250)로 구성된다.In addition, the first cooling cycle 200 is supplied with a first compressor 210 for compressing a refrigerant and a high pressure refrigerant passed through the first compressor 210 to release and condense heat to condense into a low temperature high pressure refrigerant. The first condenser 220 and the first evaporator 230 to cool the refrigerating compartment 110 by evaporating by the endothermic action of the refrigerant, and the first evaporator to cool the freezing compartment 120 by evaporating by the endothermic action of the refrigerant. It consists of a three-way valve 250 for dividing the condensing refrigerant of the second evaporator 240 and the first condenser 210 into the first and second evaporators 230 and 240, respectively.

그리고, 상기 삼방밸브(250)와 제1증발기(230) 사이에는 모세관(260)이 설치되고, 상기 삼방밸브(250)와 제2증발기(240) 사이에는 제1팽창밸브(270)가 설치되며, 상기 모세관(260)은 제1응축기(220)를 거친 냉매압력 드롭을 통한 냉장실(110) 의 정온을 유지하며, 상기 제1팽창밸브(270)는 제1응축기(220)를 거친 냉매를 개도 변경을 통해 냉동실(120) 냉매의 온도를 가변시키게 된다.A capillary tube 260 is installed between the three-way valve 250 and the first evaporator 230, and a first expansion valve 270 is installed between the three-way valve 250 and the second evaporator 240. The capillary tube 260 maintains a constant temperature of the refrigerating chamber 110 through a refrigerant pressure drop passing through the first condenser 220, and the first expansion valve 270 opens the refrigerant passing through the first condenser 220. By changing the temperature of the refrigerant in the freezer compartment 120 is changed.

덧붙여, 상기 제1팽창밸브(270)는 제1응축기(220)를 거친 냉매를 증발하기 쉽도록 교축시키면서 압력강하에 의한 분무상태를 만들게 된다.In addition, the first expansion valve 270 throttles the refrigerant passing through the first condenser 220 so as to easily evaporate, thereby creating a sprayed state due to the pressure drop.

상술한 제1냉각사이클(200)의 상술한 구성은 제1순환유로(280)에 의해 연결되어 냉매를 순환시키게 되는 것이다.The above-described configuration of the first cooling cycle 200 is connected by the first circulation passage 280 to circulate the refrigerant.

한편, 상기 제1냉각사이클(200) 중 제1,2증발기(230,240)만 냉장실(110)과 냉동실(120)에 각각 설치되고 나머진 기계실(140)에 설치된다.Meanwhile, only the first and second evaporators 230 and 240 of the first cooling cycle 200 are installed in the refrigerating chamber 110 and the freezing chamber 120, respectively, and are installed in the remaining machine chamber 140.

또한, 상기 제2냉각사이클(300)은 냉매를 압축하는 제2압축기(310)와, 상기 제2압축기(210)를 거친 고압의 냉매를 공급받아 열을 방출 및 응축시켜 저온 고압의 냉매로 응축하는 제2응축기(320)와, 냉매의 흡열 작용에 의해 증발시켜 상기 초저온실(130)을 냉각하는 제3증발기(330)로 구성된다.In addition, the second cooling cycle 300 receives a second compressor 310 compressing the refrigerant and a high pressure refrigerant passed through the second compressor 210 to release and condense heat to condense into a refrigerant having a low temperature and high pressure. The second condenser 320 and a third evaporator 330 to cool the cryogenic chamber 130 by evaporation by the endothermic action of the refrigerant.

그리고, 제2응축기(320)와 제3증발기(330) 사이에는 제2팽창밸브(370)가 구비되며, 상기 제2팽창밸브(370)는 제2응축기(320)를 거친 냉매를 증발하기 쉽도록 교축시키면서 압력강하에 의한 분무상태를 만들게 된다.In addition, a second expansion valve 370 is provided between the second condenser 320 and the third evaporator 330, and the second expansion valve 370 easily evaporates the refrigerant passing through the second condenser 320. While throttling so as to create a spray state by the pressure drop.

한편, 상기 제2냉각사이클(200) 중 제3증발기(330)만 초저온실(130)에 설치되고 나머진 기계실(140)에 설치된다.On the other hand, only the third evaporator 330 of the second cooling cycle 200 is installed in the cryogenic chamber 130 and the remaining machine room 140 is installed.

상술한 제2냉각사이클(300)의 상술한 구성은 제2순환유로(380)에 의해 연결되어 냉매를 순환시키게 되는 것이다.The above-described configuration of the second cooling cycle 300 is connected by the second circulation passage 380 to circulate the refrigerant.

또한, 상기 열교환부(400)는 열교환파이프(410)로 구성되되, 상기 열교환파 이프(410)는 제1순환유로(280)에 설치되어 제1,2증발기(230,240)의 냉매를 전달받아 상기 제2응축기(320)를 과 냉각시켜 초저온실(130),(제2냉각사이클;300)의 냉동능력을 향상시키게 되는 것이다. 상기 열교환파이프(410)를 통과한 냉매는 제1냉각사이클(200)의 제1압축기(210)로 복귀한다.In addition, the heat exchange part 400 is composed of a heat exchange pipe 410, the heat exchange pipe 410 is installed in the first circulation passage 280 receives the refrigerant of the first and second evaporators (230, 240) By overcooling the second condenser 320 to improve the cryogenic capacity of the cryogenic chamber 130, (second cooling cycle; 300). The refrigerant passing through the heat exchange pipe 410 returns to the first compressor 210 of the first cooling cycle 200.

따라서, 상기 열교환파이프(410)에 의해 제2응축기(320)의 냉매가 냉각되고, 냉각된 냉매는 상기 제3증발기(330)를 통해 증발시켜 초저온의 냉기를 발생시켜 초저온실(130)을 냉각시키게 되는 것이다.Accordingly, the refrigerant of the second condenser 320 is cooled by the heat exchange pipe 410, and the cooled refrigerant is evaporated through the third evaporator 330 to generate cryogenic cold air to cool the cryogenic chamber 130. It is to be made.

상기 열교환파이프(410)는 열교환의 효율을 높이기 위해 코일형태로 구성될 수 있다. 또한, 상기 제2응축기(320)를 감싸는 형태로 구성해도 좋다.The heat exchange pipe 410 may be configured in the form of a coil to increase the efficiency of heat exchange. In addition, the second condenser 320 may be configured to enclose the second condenser 320.

이상, 본 발명의 바람직한 실시 예에 대하여 상세히 설명하였으나, 본 발명의 기술적 범위는 전술한 실시 예에 한정되지 않고 특허청구범위에 의하여 해석되어야 할 것이다. 이때, 이 기술분야에서 통상의 지식을 습득한 자라면, 본 발명의 범위에서 벗어나지 않으면서도 많은 수정과 변형이 가능함을 고려해야 할 것이다.As mentioned above, although preferred embodiment of this invention was described in detail, the technical scope of this invention is not limited to the above-mentioned embodiment, It should be interpreted by the claim. It will be understood by those skilled in the art that many modifications and variations are possible without departing from the scope of the present invention.

도 1은 종래의 냉장고 구성을 도시한 블록도이다.1 is a block diagram showing a conventional refrigerator configuration.

도 2는 본 발명에 따른 냉장고를 도시한 정단면도이다.2 is a front sectional view showing a refrigerator according to the present invention.

*도면중 주요부분에 관한 부호의 설명** Description of symbols on main parts of the drawings *

A - 냉장고 100 - 본체A-Refrigerator 100-Body

200 - 제1냉각사이클 300 - 제2냉각사이클200-1st cooling cycle 300-2nd cooling cycle

400 - 열교환부400-heat exchanger

Claims (6)

냉장실, 냉동실, 초저온실로 분할 형성되는 본체;A main body divided into a refrigerator compartment, a freezer compartment, and an ultra low temperature chamber; 상기 냉장실과 냉동실을 냉각하는 제1냉각사이클;A first cooling cycle for cooling the refrigerating compartment and the freezing compartment; 상기 초저온실을 냉각하는 제2냉각사이클; 및A second cooling cycle for cooling the cryogenic chamber; And 상기 제1냉각사이클의 냉매로 제2냉각사이클의 냉매를 냉각시키는 열교환부;A heat exchanger for cooling the refrigerant of the second cooling cycle with the refrigerant of the first cooling cycle; 를 포함하는 것을 특징으로 하는 냉장고.Refrigerator comprising a. 제 1항에 있어서,The method of claim 1, 상기 제2냉각사이클의 냉매는 상기 제1냉각사이클의 냉매보다 낮은 증발온도를 가지는 것을 특징으로 하는 냉장고.The refrigerant of the second cooling cycle has a lower evaporation temperature than the refrigerant of the first cooling cycle. 제 2항에 있어서,3. The method of claim 2, 상기 제1냉각사이클은,The first cooling cycle, 냉매를 압축하는 제1압축기;,A first compressor for compressing the refrigerant; 압축된 냉매를 저온 고압의 냉매로 응축하는 제1응축기;A first condenser for condensing the compressed refrigerant into a refrigerant having a low temperature and high pressure; 응축된 냉매를 증발시켜 냉장실을 냉각하는 제1증발기;A first evaporator cooling the refrigerating compartment by evaporating the condensed refrigerant; 응축된 냉매를 증발시켜 냉동실을 냉각하는 제2증발기; 및A second evaporator configured to cool the freezing compartment by evaporating the condensed refrigerant; And 상기 제1응축기의 응축 냉매를 제1,2증발기로 각각 전달하는 삼방밸브;를 포함하는 것을 특징으로 하는 냉장고.And a three-way valve transferring the condensed refrigerant of the first condenser to the first and second evaporators, respectively. 제 3항에 있어서,The method of claim 3, 상기 삼방밸브와 제1증발기 사이에는 모세관이 설치되며, 상기 삼방밸브와 제2증발기 사이에는 제1팽창밸브가 설치되는 것을 특징으로 하는 냉장고.A capillary tube is installed between the three-way valve and the first evaporator, and a first expansion valve is installed between the three-way valve and the second evaporator. 제 1항 내지 제 4항 중 어느 한 항에 있어서,5. The method according to any one of claims 1 to 4, 상기 제2냉각사이클은,The second cooling cycle, 냉매를 압축하는 제2압축기;,A second compressor for compressing the refrigerant; 압축된 냉매를 저온 고압의 냉매로 응축하는 제2응축기;A second condenser for condensing the compressed refrigerant into a refrigerant having a low temperature and high pressure; 상기 제2응축기의 냉매를 팽창시키는 제2팽창밸브;A second expansion valve for expanding the refrigerant of the second condenser; 응축된 냉매를 증발시켜 냉장실을 냉각하는 제3증발기;를 포함하는 것을 특징으로 하는 냉장고.And a third evaporator configured to evaporate the condensed refrigerant to cool the refrigerating compartment. 제 5항에 있어서,The method of claim 5, 상기 열교환부는 코일형태의 열교환파이프로 구성되되, 상기 열교환파이프는 제1,2증발기의 냉매를 전달받아 상기 제2응축기를 과 냉각시키도록 설치되는 것을 특징으로 하는 냉장고.The heat exchanger is configured as a heat exchange pipe in the form of a coil, the heat exchange pipe is a refrigerator characterized in that it is installed to overcool the second condenser by receiving the refrigerant of the first and second evaporators.
KR1020090129729A 2009-12-23 2009-12-23 Refrigerator KR20110072687A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160091107A (en) * 2015-01-23 2016-08-02 엘지전자 주식회사 Cooling Cycle Apparatus for Refrigerator
CN106440626A (en) * 2016-10-27 2017-02-22 青岛海尔特种电冰柜有限公司 Multiple-temperature zone dual-refrigerating cycle system and multiple-temperature zone refrigeration device
CN106482369A (en) * 2016-10-27 2017-03-08 青岛海尔特种电冰柜有限公司 Multi-temperature zone kind of refrigeration cycle dual system and multi-temperature zone refrigeration plant
CN106482371A (en) * 2016-10-27 2017-03-08 青岛海尔特种电冰柜有限公司 The double refrigeration system of multi-temperature zone and multi-temperature zone refrigeration plant
CN106524651A (en) * 2016-10-27 2017-03-22 青岛海尔特种电冰柜有限公司 Split type double-flow-path refrigerating equipment
CN106556203A (en) * 2016-10-27 2017-04-05 青岛海尔特种电冰柜有限公司 Split type pair of refrigerating plant
CN106556201A (en) * 2016-10-27 2017-04-05 青岛海尔特种电冰柜有限公司 Double loop separating refrigerating equipment
CN106556202A (en) * 2016-10-27 2017-04-05 青岛海尔特种电冰柜有限公司 The double refrigerating plants of multi-temperature zone
CN106568219A (en) * 2016-10-27 2017-04-19 青岛海尔特种电冰柜有限公司 Multiple-temperature-zone double-flow-way refrigeration equipment
CN106568275A (en) * 2016-10-27 2017-04-19 青岛海尔特种电冰柜有限公司 Multi-temperature-area double-flowing-way refrigeration device
CN106595106A (en) * 2016-10-27 2017-04-26 青岛海尔特种电冰柜有限公司 Double-loop multi-temperature-zone refrigerating device
KR102210493B1 (en) * 2020-08-26 2021-02-02 신용수 Refrigeration system

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160091107A (en) * 2015-01-23 2016-08-02 엘지전자 주식회사 Cooling Cycle Apparatus for Refrigerator
CN106440626A (en) * 2016-10-27 2017-02-22 青岛海尔特种电冰柜有限公司 Multiple-temperature zone dual-refrigerating cycle system and multiple-temperature zone refrigeration device
CN106482369A (en) * 2016-10-27 2017-03-08 青岛海尔特种电冰柜有限公司 Multi-temperature zone kind of refrigeration cycle dual system and multi-temperature zone refrigeration plant
CN106482371A (en) * 2016-10-27 2017-03-08 青岛海尔特种电冰柜有限公司 The double refrigeration system of multi-temperature zone and multi-temperature zone refrigeration plant
CN106524651A (en) * 2016-10-27 2017-03-22 青岛海尔特种电冰柜有限公司 Split type double-flow-path refrigerating equipment
CN106556203A (en) * 2016-10-27 2017-04-05 青岛海尔特种电冰柜有限公司 Split type pair of refrigerating plant
CN106556201A (en) * 2016-10-27 2017-04-05 青岛海尔特种电冰柜有限公司 Double loop separating refrigerating equipment
CN106556202A (en) * 2016-10-27 2017-04-05 青岛海尔特种电冰柜有限公司 The double refrigerating plants of multi-temperature zone
CN106568219A (en) * 2016-10-27 2017-04-19 青岛海尔特种电冰柜有限公司 Multiple-temperature-zone double-flow-way refrigeration equipment
CN106568275A (en) * 2016-10-27 2017-04-19 青岛海尔特种电冰柜有限公司 Multi-temperature-area double-flowing-way refrigeration device
CN106595106A (en) * 2016-10-27 2017-04-26 青岛海尔特种电冰柜有限公司 Double-loop multi-temperature-zone refrigerating device
KR102210493B1 (en) * 2020-08-26 2021-02-02 신용수 Refrigeration system

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