KR0127650Y1 - Refrigerator control method for a refrigerator - Google Patents

Refrigerator control method for a refrigerator Download PDF

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Publication number
KR0127650Y1
KR0127650Y1 KR2019930017511U KR930017511U KR0127650Y1 KR 0127650 Y1 KR0127650 Y1 KR 0127650Y1 KR 2019930017511 U KR2019930017511 U KR 2019930017511U KR 930017511 U KR930017511 U KR 930017511U KR 0127650 Y1 KR0127650 Y1 KR 0127650Y1
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KR
South Korea
Prior art keywords
evaporator
refrigerant
compartment
refrigerating
temperature
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KR2019930017511U
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Korean (ko)
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KR950009541U (en
Inventor
황윤호
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김광호
삼성전자주식회사
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Priority to KR2019930017511U priority Critical patent/KR0127650Y1/en
Publication of KR950009541U publication Critical patent/KR950009541U/en
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Publication of KR0127650Y1 publication Critical patent/KR0127650Y1/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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • 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
    • F25B41/37—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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2104—Temperatures of an indoor room or compartment

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

Abstract

본 고안은 냉동실, 냉장실 및 야채실에 각각의 목적온도별로 증발기를 설치하여 상기 냉동실과 냉장실의 고내온도에 따라 증발기를 제어하는 냉장고의 냉각제어장치에 관한 것으로써, 냉장고에 있어서, 응축기(20)에서 액화된 냉매를 야채실(4)에서 증발할 수 있도록 감압하는 제1모세관(30)과, 상기 제1모세관(30)에서 감압된 액상 냉매를 받아서 야채실(4)의 온도를 저온으로 유지하도록 냉매의 증발잠열에 의해 공기를 냉각하는 제1증발기(35)와, 냉동실(2) 및 냉장실(3)의 온도를 감지하는 서머스탯(60)과, 상기 서머스탯(60)에 의해 감지된 고내온도에 따라 상기 제1증발기(35)에서의 냉매를 냉동실(2) 및 냉장실(3)에서 증발할 수 있도록 감압하는 제2모세관(40)과, 상기 제2모세관(40)에서 감압된 냉매를 받아서 냉동실(2) 및 냉장실(3)의 온도를 저온으로 유지하도록 냉매의 증발잠열에 의해 공기를 냉각하는 제2증발기(45)로 이루어진 것을 특징으로 한다.The present invention relates to a refrigerator control apparatus for controlling an evaporator according to the internal temperature of the freezer compartment and the refrigerating compartment by installing an evaporator for each target temperature in a freezer compartment, a refrigerating compartment, and a vegetable compartment. A first capillary tube 30 for reducing the pressure of the liquefied refrigerant to evaporate in the vegetable chamber 4 and a liquid refrigerant decompressed in the first capillary tube 30 are received to maintain the temperature of the vegetable chamber 4 at a low temperature. The first evaporator 35 for cooling the air by latent evaporation, the thermostat 60 for sensing the temperature of the freezer compartment 2 and the refrigerating compartment 3, and the internal temperature detected by the thermostat 60. Accordingly, the second capillary tube 40 for depressurizing the refrigerant in the first evaporator 35 to be evaporated in the freezing compartment 2 and the refrigerating compartment 3 and the freezer compartment receiving the reduced pressure in the second capillary tube 40. (2) and to keep the temperature of the refrigerating chamber (3) at a low temperature And a second evaporator 45 which cools the air by latent heat of evaporation of the lock refrigerant.

Description

냉장고의 냉각제어장치Refrigeration control device

제1도는 종래에 의한 냉장고의 측단면도.1 is a side cross-sectional view of a conventional refrigerator.

제2도는 종래의 냉장고에 있어서의 냉동 싸이클도.2 is a refrigeration cycle diagram of a conventional refrigerator.

제3도는 본 고안의 일실시예에 의한 냉장고의 측단면도.3 is a side cross-sectional view of a refrigerator according to one embodiment of the present invention.

제4도는 본 고안의 일실시예에 있어서의 냉동 싸이클도.4 is a refrigeration cycle diagram according to one embodiment of the present invention.

제5도는 본 고안의 일실시예에 의한 냉장고의 냉각제어장치의 개략적인 회로도.5 is a schematic circuit diagram of a cooling control apparatus of a refrigerator according to one embodiment of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 본체 2 : 냉동실1: body 2: freezer

3 : 냉장실 4 : 야채실3: cold storage room 4: vegetable room

10 : 압축기 20 : 응축기10 compressor 20 condenser

30 : 제1모세관 35 : 제1증발기30: first capillary 35: first evaporator

40 : 제2모세관 41 : 냉동용 모세관40: second capillary 41: freezing capillary

42 : 냉장용 모세관 45 ; 제2증발기42: refrigerated capillary 45; Second evaporator

46 : 냉동용 증발기 47 : 냉장용 증발기46: refrigeration evaporator 47: refrigeration evaporator

50 : 3방향밸브 60 : 서머스탯50: 3-way valve 60: thermostat

본 고안은 냉동실, 냉장실 및 야채실에 각각의 목적온도별로 증발기를 설치하여 상기 냉동실과 냉장실의 고내온도에 따라 증발기를 제어하는 냉장고의 냉각제어장치에 관한 것이다.The present invention relates to a refrigeration control device of a refrigerator for controlling an evaporator according to the internal temperature of the freezer compartment and the refrigerating compartment by installing an evaporator for each target temperature in the freezer compartment, the refrigerating compartment and the vegetable compartment.

일반적으로, 종래에 의한 냉장고는 제1도 내지 제2도에 도시한 바와 같이, 압축기(10)는 냉매를 고온고압의 기체로 압축하고, 상기 압축기(10)에서 압축된 고온고압의 기체냉매는 응축기(20)를 통해 외부공기와이 자연대류나 강제대류현상에 의해 열교환되어 상온고압의 냉매로 냉각되어 액화한다.Generally, in the conventional refrigerator, as shown in FIGS. 1 to 2, the compressor 10 compresses the refrigerant into a gas of high temperature and high pressure, and the gas refrigerant of the high temperature and high pressure compressed by the compressor 10 is Through the condenser 20, the external air and heat exchange by the natural convection or forced convection phenomenon is cooled by the refrigerant of room temperature and high pressure to liquefy.

그리고, 상기 응축기(20)에서 액화된 냉매는 모세관(21)을 통해 저온저압의 책체냉매로 감압된다.In addition, the refrigerant liquefied in the condenser 20 is depressurized by book refrigerant of low temperature and low pressure through the capillary tube 21.

이에 따라, 증발기(22)에서는 상기 모세관(21)에서 감압된 저온저압의 냉매를 받아 팬(22a)에 의해 송풍되는 공기를 냉매의 증발잠열에 의해 냉각해서 냉장고내의 온도를 저온으로 냉각시킨다.Accordingly, the evaporator 22 receives the low temperature low pressure refrigerant depressurized by the capillary tube 21 and cools the air blown by the fan 22a by the latent heat of evaporation of the refrigerant to cool the temperature in the refrigerator to low temperature.

그리고, 상기 증발기(22)에서 냉각된 저온저압의 기체냉매는 다시 압축기(10)로 흡입되면서 제2도와 같이 반복순환되는 냉동싸이클을 형성한다.In addition, the low-temperature low-pressure gas refrigerant cooled in the evaporator 22 is sucked into the compressor 10 again to form a refrigeration cycle that is repeatedly circulated as shown in FIG.

이때, 상기 냉동실(2)내 온도가 일정온도 이상으로 상승하면, 냉동실(2)내의 도시되지 않은 서머스탯에 이해 팬(22a)과 압축기(10)가 온(ON)되어 냉동싸이클을 형성시키므로써 상기 냉동실(2)의 온도를 저온으로 냉각시킨다.At this time, when the temperature in the freezer compartment 2 rises above a certain temperature, the fan 22a and the compressor 10 are turned on in an unillustrated thermostat in the freezer compartment 2 to form a freezing cycle. The temperature of the freezer compartment 2 is cooled to low temperature.

반면, 상기 냉동실(2)내 온도가 일정온도 이하로 내려가면, 상기 서머스탯에 의해 팬(22a)과 압축기(10)가 오프(OFF)되어 냉동싸이클을 해제시키므로써 상기 냉동실(2)의 온도를 적정온도로 유지한다.On the other hand, when the temperature in the freezer compartment 2 falls below a certain temperature, the temperature of the freezer compartment 2 is released by turning off the fan 22a and the compressor 10 by the thermostat to release the freezing cycle. Is maintained at the proper temperature.

그리고, 냉장실(3)은 고내의 온도변화에 따라 상기 냉장실(3)의 우측상단부에 부착된 댐퍼 액츄에이터(5)에 의해 냉기의 흐름을 조절하면서 상기 증발기(22)에서 냉각된 공기를 냉장실(3)내로 유입시켜 적정온도로 유지토록 하였다.And, the refrigerating chamber (3) controls the flow of cold air by the damper actuator (5) attached to the upper right end of the refrigerating chamber (3) according to the temperature change in the refrigerator, the refrigerator compartment (3) ) To maintain the proper temperature.

그런데 이와 같이 하나이 증발기(22)로 구성된 냉동싸이클 방식에 있어서는 냉동실과 냉장실의 목적온도가 대체로 -18℃, 3℃인 점을 고려하여 상기 목적온도를 만족하기 위한 증발기의 증발온도를 이보다 낮은 -25℃정도로 설계하였다.However, in the freezing cycle system comprising one evaporator 22, the evaporator temperature of the evaporator for satisfying the target temperature is lower than -25 in consideration of the fact that the target temperatures of the freezer compartment and the refrigerating compartment are -18 ° C and 3 ° C. Designed at about ℃.

이에 따라, 상기 냉장실의 경우에는 증발온도(-25℃)와 목적온도(3℃)의 차가 28℃정도로 커져 압축기의 구동에 따른 소비전력이 상승함으로써 에너지 효율이 크게 저하된다는 문제점이 있었다.Accordingly, in the case of the refrigerating chamber, the difference between the evaporation temperature (-25 ° C.) and the target temperature (3 ° C.) is increased to about 28 ° C., thereby increasing the power consumption due to the operation of the compressor.

또한, 야채실이 독립적으로 밀폐되어 있지 않기 때문에 다량의 수분을 함유한 야채실의 공기가 증발기로 이동되어 상기 증발기의 표면에 착상함으로써 증발기의 열교환효율이 저하될뿐만 아니라, 제상운전에 따른 에너지손실이 크게 발생한다는 문제점이 있었다.In addition, since the vegetable compartment is not sealed independently, the air in the vegetable compartment containing a large amount of water is moved to the evaporator and implanted on the surface of the evaporator, thereby not only lowering the heat exchange efficiency of the evaporator but also greatly reducing energy loss due to defrosting operation. There was a problem that occurred.

따라서, 본 고안은 상기와 같은 문제점을 해결하기 위해 이루어진 것으로써, 본 고안의 목적은 냉동실, 냉장실 및 야채실에 각각의 목적온도별로 다수개의 증발기를 설치하여 상기 냉동실과 냉장실의 고내온동에 따라 증발기를 각각 제어하여 압축기의 구동에 따른 소비전력을 감소시킴으로써 에너지효율을 향상시킬 뿐만 아니라, 냉장효과를 향상시킬 수 있는 냉장고의 냉각제어장치를 제공하는데 있다.Accordingly, the present invention is made to solve the above problems, the object of the present invention is to install a plurality of evaporators for each target temperature in the freezer compartment, the refrigerator compartment and the vegetable compartment by the high temperature resistance of the freezer compartment and the refrigerating compartment By controlling the respective power consumption to reduce the power consumption of the compressor to improve the energy efficiency, to provide a refrigeration control device of the refrigerator that can improve the refrigeration effect.

본 고안의 다른 목적은, 야채실용 증발기에 의해 야채실을 독립적으로 밀폐시킴으로써 다량의 수분을 함유한 야채실의 공기가 냉동/냉장용 증발기의 표면에 착상되는 것을 방지하여 상기 냉동/냉장용 증발기의 열교환 효율을 향상시킬 뿐만 아니라 제상운전에 따른 에너지손실도 감소시킬 수 있는 냉장고의 냉각제어장치를 제공하는데 있다.Another object of the present invention is to independently seal the vegetable compartment by the vegetable compartment evaporator, thereby preventing the air in the vegetable compartment containing a large amount of moisture from forming on the surface of the freezer / refrigeration evaporator, thereby exchanging heat exchange efficiency of the freezer / refrigeration evaporator. It is to provide a cooling control device of the refrigerator that can not only improve the efficiency but also reduce the energy loss due to the defrosting operation.

상기 목적을 달성하기 위하여 본 고안에 의한 냉장고의 냉각제어장치는, 냉매를 압축하는 압축기와, 상기 압축된 냉매를 응축하는 응축기와, 냉동실의 고내온도를 감지하는 냉동용 서머스탯과, 냉장실의 고내온도를 감지하는 냉장용 서머스탯을 구비한 냉장고에 있어서: 상기 응축기로부터 유입된 냉매를 야채실에서 증발할 수 있도록 감압하는 제1모세관과: 상기 제1모세관으로부터 유입된 냉매의 증발잠열에 의해 상기 야채실의 공기를 냉각하는 제1증발기와: 상기 냉동용 및 냉장용 서모스탯에서 감지된 상기 냉동실 및 냉장실의 고내온도에 따라, 상기 제1증발기로부터 유입되는 냉매의 흐름을 하기 냉동용 모세관 또는 하기 냉장용 모세관으로 전환하는 3방향밸브와: 상기 3방향밸브를 통해 유입되는 냉매를 상기 냉동실에서 증발할 수 있도록 감압하는 냉동용 모세관과: 상기 3방향밸브를 통해 유입되는 냉매를 상기 냉장실에서 증발할 수 있도록 감압하는 냉장용 모세관과: 상기 냉동용 모세관으로부터 유입된 냉매의 증발잠열에 의해 상기 냉동실의 공기를 냉각하는 냉동용 증발기와: 상기 냉장용 모세관으로부터 유입된 냉매의 증발잠열에 의해 상기 냉장실의 공기를 냉각하는 냉장용 증발기를 포함하여 구성된 것을 특징으로 한다.In order to achieve the above object, a cooling control apparatus of a refrigerator according to the present invention includes a compressor for compressing a refrigerant, a condenser for condensing the compressed refrigerant, a refrigeration thermostat for detecting a temperature in a freezer compartment, and an inside of a refrigerator compartment. A refrigerator having a thermostat for refrigeration which senses temperature, the refrigerator comprising: a first capillary for depressurizing a refrigerant introduced from the condenser so as to evaporate in the vegetable compartment: a latent heat of evaporation of the refrigerant introduced from the first capillary tube; The first evaporator for cooling the air of the refrigerant flow according to the high temperature of the freezer compartment and the refrigerating chamber detected in the freezing and refrigerating thermostat, the flow of the refrigerant flowing from the first evaporator to the freezing capillary tube or the following refrigeration A three-way valve for converting into a capillary tube; and reducing the pressure to allow the refrigerant introduced through the three-way valve to evaporate from the freezing chamber. And a refrigeration capillary tube; and a refrigeration capillary tube for depressurizing the refrigerant flowing through the three-way valve to evaporate from the refrigerating compartment; and cooling the air in the freezing chamber by the latent evaporation of the refrigerant introduced from the freezing capillary tube. Refrigerating evaporator: characterized in that it comprises a refrigeration evaporator for cooling the air in the refrigerating chamber by the latent heat of evaporation of the refrigerant introduced from the refrigerating capillary.

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.

제3도 및 제4도에 있어서, 참조부호 1은 냉장고본체이고, 압축기(10)는 냉매를 고온고압의 기체로 압축하며, 응축기(20)는 상기 압축기(10)에서 압축된 고온고압의 기체냉매를 외부공기와의 자연대류나 강제대류현상에 의해 상온고압의 냉매로 냉각하여 액화시킨다.3 and 4, reference numeral 1 denotes a refrigerator body, the compressor 10 compresses the refrigerant into a gas of high temperature and high pressure, and the condenser 20 compresses the gas of the high temperature and high pressure compressed by the compressor 10. The refrigerant is liquefied by cooling with a refrigerant of room temperature and high pressure by natural convection or forced convection with external air.

그리고, 제1모세관(30)은 상기 응축기(20)에서 액화된 냉매를 야채실(4)에서 증발하기 쉬운 상태로 감압하는 야채실용 모세관이고, 제1증발기(35)는 상기 제1모세관(30)에서 감압된 액상 냉매를 받아서 냉매의 증발잠열에 의해 상기 야채실(4)의 공기를 냉각시켜 야채실(4)의 온도를 저온으로 유지하는 야채실용 증발기로, 이 제1증발기(35)는 야채실 서랍(36)의 상단부에 장착되어 상기 야채실 서랍(36)을 야채실(4)내에 완전히 밀어넣으면 상기 야채실(4)이 냉장실(3)과는 독립적으로 밀폐되도록 설치되어 있다.The first capillary tube 30 is a capillary tube for reducing the pressure of the refrigerant liquefied in the condenser 20 in a state where it is easy to evaporate in the vegetable chamber 4, and the first evaporator 35 is the first capillary tube 30. The evaporator for a vegetable room which receives the liquid refrigerant reduced in pressure in the vegetable chamber 4 by cooling latent heat of the refrigerant and keeps the temperature of the vegetable chamber 4 at a low temperature. The first evaporator 35 is a vegetable chamber drawer ( When the vegetable compartment drawer 36 is completely pushed into the vegetable compartment 4, it is installed so that the said vegetable compartment 4 may be sealed independently from the refrigerator compartment 3 by attaching it to the upper end of 36).

제2모세관(40)은 상기 제1증발기(35)에서의 냉매를 3방향밸브(50)를 통해 받아서 냉동실(2) 및 냉장실(3)에서 증발하기 쉬운 상태로 감압하는 것으로, 이 제2모세관(40)은 상기 제1증발기(35)에서의 냉매를 냉동실(2)에서 증발할 수 있도록 감압하는 냉동용 모세관(41)과, 상기 제1증발기(35)에서의 냉매를 냉장실(3)에서 증발할 수 있도록 감압하는 냉장용 모세관(42)으로 구성되어 있다.The second capillary tube 40 receives the refrigerant from the first evaporator 35 through the three-way valve 50 and depressurizes the refrigerant in the freezing chamber 2 and the refrigerating chamber 3 in a state where it is easy to evaporate. 40 is a freezing capillary tube 41 for depressurizing the refrigerant in the first evaporator 35 to evaporate in the freezing chamber 2 and the refrigerant in the first evaporator 35 in the refrigerating chamber 3. It consists of the refrigeration capillary tube 42 which depressurizes so that it may evaporate.

또한, 도면에 있어서 제2증발기(45)는 상기 제2모세관(40)에서 감압된 냉매를 받아서 상기 냉동실(2) 및 냉장실(3)의 온도를 저온으로 유지하도록 냉매의 증발잠열에 의해 공기를 냉각하는 것으로, 이 제2증발기(45)는 상기 제2모세관(40)의 냉장용 모세관(41)에서 감압된 냉매를 받아서 냉동용 팬(46a)에 의해 송풍되는 공기를 냉매의 증발잠열에 의해 냉각시켜 상기 냉동실(2)의 온도를 저온으로 유지하도록 냉동실(2)의 하단부에 장착되어 있는 냉동용 증발기(46)와, 상기 제2모세관(40)의 냉장용 모세관(42)에서 감압된 냉매를 받아서 냉장용 팬(47a)에 의해 송풍되는 공기를 냉매의 증발잠열에 의해 냉각시켜 상기 냉장실(3)의 온도를 저온으로 유지하도록 냉장실(3)의 우측상단부에 장착되어 있는 냉장용 증발기(47)로 구성되어 있다.In addition, in the drawing, the second evaporator 45 receives air depressurized by the second capillary tube 40 and supplies air by latent heat of evaporation of the refrigerant to keep the temperature of the freezing chamber 2 and the refrigerating chamber 3 at a low temperature. By cooling, the second evaporator 45 receives the refrigerant depressurized from the refrigerating capillary tube 41 of the second capillary tube 40 and blows air blown by the freezing fan 46a by the latent heat of evaporation of the refrigerant. Refrigerant decompressed in the refrigerating evaporator 46 mounted at the lower end of the freezer compartment 2 and the refrigerating capillary tube 42 of the second capillary tube 40 to keep the temperature of the freezer compartment 2 at a low temperature by cooling. Refrigeration evaporator 47 mounted on the upper right end of the refrigerating compartment 3 to cool the air blown by the refrigerating fan 47a by the latent heat of evaporation of the refrigerant to keep the temperature of the refrigerating compartment 3 at a low temperature. It consists of).

한편, 상기 냉동용 증발기(46)과 냉장용 증발기(47)의 증발온도는 대체로 -25℃, 1℃정도로 설계하여 냉동실(2) 및 냉장실(3)의 목적온도(예를 들어, -18℃, 3℃정도)와의 차를 최소화하였다.On the other hand, the evaporation temperature of the freezing evaporator 46 and the refrigeration evaporator 47 is designed to be approximately -25 ℃, 1 ℃ about the target temperature (for example, -18 ℃) of the freezer compartment (2) and the refrigerating compartment (3) , 3 ℃) to minimize the difference.

그리고, 상기 3방향밸브(50)는 후술하는 서머스탯에 의해 감지된 냉동실(2) 및 냉장실(3)의 고내온도에 따라 냉매의 흐름방향을 상기 냉동실(2)과 냉장실(3)로 전환하고, 서머스탯(60)은 상기 냉동실(2)의 고내온도를 감지하는 냉동용 서머스탯(61)과, 냉장실(3)의 고내온도를 감지하는 냉장용 서머스탯(62)로 구성되어 있다.The three-way valve 50 switches the flow direction of the refrigerant into the freezing chamber 2 and the refrigerating chamber 3 according to the internal temperatures of the freezing chamber 2 and the refrigerating chamber 3 detected by the thermostat described below. , The thermostat 60 is composed of a refrigerated thermostat 61 for detecting the high temperature in the freezer compartment 2 and a refrigerated thermostat 62 for detecting the high temperature in the refrigerating compartment 3.

이하, 상기와 같이 구성된 냉장고의 냉각제어장치의 작용효과를 설명한다.Hereinafter, the effect of the cooling control device of the refrigerator configured as described above will be described.

먼저, 냉장고에 전원이 인가되면, 상기 냉장고 본체(1)의 우측하단부에 장착되어 있는 압축기(10)에서 냉매를 고온고압의 기체로 압축하고, 상기 압축기(10)에서 압축된 고온고압의 기체냉매는 응축기(20)를 통해 외부공기와의 자연대류나 강제대류현상에 의해 열교환되어 상온고압의 냉매로 냉각되어 액화된다.First, when power is applied to the refrigerator, the compressor 10 is mounted on the lower right end of the refrigerator main body 1 to compress the refrigerant into a gas of high temperature and high pressure, and the gas refrigerant of the high temperature and high pressure compressed by the compressor 10. The heat is exchanged by natural convection or forced convection with external air through the condenser 20, and is cooled with a refrigerant of room temperature and high pressure to be liquefied.

그리고, 상기 응축기(20)에서 액화된 냉매는 제1모세관(30)을 통해 야채실(4)에서 증발하기 쉬운 상태로 감압된다.In addition, the refrigerant liquefied in the condenser 20 is decompressed to a state where it is easy to evaporate from the vegetable chamber 4 through the first capillary tube 30.

그리고, 상기 응축기(20)에서 액화된 냉매는 제1모세관(30)을 통해 야채실(4)에서 증발하기 쉬운 상태로 감압된다.In addition, the refrigerant liquefied in the condenser 20 is decompressed to a state where it is easy to evaporate from the vegetable chamber 4 through the first capillary tube 30.

이에 따라, 제1증발기(35)에서는 상기 제1모세관(30)에서 감압된 액상 냉매를 받아서 냉매의 증발잠열에 의해 상기 야채실(4)의 공기를 냉각시켜 야채실(4)의 온도를 저온으로 유지한다.Accordingly, the first evaporator 35 receives the liquid refrigerant depressurized by the first capillary tube 30 and cools the air in the vegetable chamber 4 by latent heat of evaporation of the refrigerant to maintain the temperature of the vegetable chamber 4 at a low temperature. do.

한편, 상기 야채실(4)내의 다량의 수분을 함유한 공기는 제1증발기(35)에 의해 차단되어 냉장실(3) 및 냉동실(2)의 증발기(46, 47)쪽으로 이동하지 않으며, 상기 제1증발기(35)의 증발온도(예를 들어, 1℃정도)가 빙점 이상이므로 야채실(4)내의 수분이 제1증발기(35)에 착상되지 않는다.On the other hand, the air containing a large amount of water in the vegetable chamber 4 is blocked by the first evaporator 35 does not move toward the evaporators 46, 47 of the refrigerating chamber 3 and the freezing chamber 2, the first Since the evaporator temperature (for example, about 1 ° C.) of the evaporator 35 is equal to or higher than the freezing point, moisture in the vegetable chamber 4 is not implanted in the first evaporator 35.

이때, 냉동용 서머스탯(61)과 냉장용 서머스탯(62)에서는 냉동실(2) 및 냉장실(3)의 고내온도를 감지한다.At this time, the freezing thermostat 61 and the refrigerated thermostat 62 detects the internal temperature of the freezer compartment 2 and the refrigerating compartment 3.

상기 냉동용 서머스탯(61)에 의해 감지된 냉동실(2)의 온도가 일정온도이상이면, 단자(COM)가 접점단자(H)로 접속되어 교유전원입력단(11)의 상용교류전압이 냉동용 서머스탯(61)과 냉동용 팬(46a)을 통해 압축기(10)에 인가되면서 3방향밸브(50)가 냉동용 모세관(41)쪽으로 전환된다.If the temperature of the freezer compartment 2 sensed by the refrigeration thermostat 61 is above a certain temperature, the terminal COM is connected to the contact terminal (H) so that the commercial AC voltage of the power supply input terminal 11 for refrigeration The three-way valve 50 is switched to the freezing capillary tube 41 while being applied to the compressor 10 through the thermostat 61 and the freezing fan 46a.

따라서, 상기 압축기(10)에서 압축된 고온고압의 기체냉매는 응축기(20)를 통해 상온고압의 냉매로 냉각하여 액화되면서 제1모세관(30), 제1증발기(35) 그리고 3방향밸브(50)를 통해 냉동용 모세관(41)에 유입된다.Therefore, the high-temperature high-pressure gas refrigerant compressed by the compressor 10 is liquefied by cooling with a high-temperature high-pressure refrigerant through the condenser 20 to liquefy the first capillary tube 30, the first evaporator 35, and the three-way valve 50. It is introduced into the freezing capillary 41 through the).

이에 따라, 상기 냉동용 모세관(41)에서는 제1증발기(35)에서의 냉매를 3방향밸브(50)를 통해 받아서 냉동실(2)에서 증발하기 쉬운 상태로 감압한다.Accordingly, the freezing capillary tube 41 receives the refrigerant from the first evaporator 35 through the three-way valve 50 and reduces the pressure in a state where it is easy to evaporate in the freezing chamber 2.

그리고, 냉동용 증발기(46)에서는 상기 냉동용 모세관(41)에서 감압된 냉매를 받아서 냉동용 팬(46a)에 의해 송풍되는 공기를 냉매의 증발잠열에 의해 냉각시킨다.In addition, the freezing evaporator 46 receives the refrigerant depressurized by the freezing capillary tube 41 and cools the air blown by the freezing fan 46a by the latent heat of evaporation of the refrigerant.

이때, 상기 냉동용 증발기(46)에서 냉각된 저온저압의 기체냉매는 다시 압축기(10)로 흡입되면서 제4도와 같이 반복순환되는 냉동싸이클을 형성한다.At this time, the low-temperature low-pressure gas refrigerant cooled in the freezing evaporator 46 is sucked into the compressor 10 again to form a refrigeration cycle that is repeatedly circulated as shown in FIG.

상기와 같이 냉동싸이클이 반복순환함으로써 냉동실(2)이 계속 냉각되어 일정온도이하가 되면, 단자(COM)가 접점단자(L)로 접속되어 교류전원입력단(11)의 상용교류전압이 냉동용 팬(46a)에 인가되지 않는다.As described above, when the freezing chamber 2 is continuously cooled by a repetitive circulation of the freezing cycle and the temperature is lower than a predetermined temperature, the terminal COM is connected to the contact terminal L, and the commercial AC voltage of the AC power input terminal 11 is a refrigeration fan. Not applied to 46a.

이때, 상기 냉장용 서머스탯(62)에 의해 감지된 냉장실(3)의 온도가 일정온도이상이면,단자(COM')가 접점단자(H')로 접속되어 교유전원입력단(11)의 상용교류전압이 냉장용 서머스탯(62)을 통해 냉장용 팬(47a)과 압축기(10)에 인가되면서 3방향밸브(50)가 냉장용 모세관(42)쪽으로 전환된다.At this time, if the temperature of the refrigerating chamber 3 sensed by the refrigeration thermostat 62 is above a certain temperature, the terminal COM 'is connected to the contact terminal H' and thus the commercial exchange of the power supply input terminal 11 is performed. As the voltage is applied to the refrigerating fan 47a and the compressor 10 through the refrigeration thermostat 62, the three-way valve 50 is switched to the refrigerating capillary tube 42.

따라서, 상기 압축기(10)에서 압축된 고온고압의 기체냉매는 응축기(20)를 통해 상온고압의 냉매로 냉각되어 액화되면서 제1모세관(30), 제1증발기(35) 그리고 3방향밸브(50)를 통해 냉장용 모세관(42)에 유입된다.Accordingly, the high temperature and high pressure gas refrigerant compressed by the compressor 10 is cooled by the refrigerant at room temperature and high pressure through the condenser 20 to be liquefied, and thus the first capillary tube 30, the first evaporator 35, and the three-way valve 50 are liquefied. It is introduced into the refrigeration capillary 42 through).

이에 따라, 상기 냉장용 모세관(42)에서는 제1증발기(35)에서의 냉매를 3방향밸브(50)를 통해 받아서 냉장실(3)에서 증발하기 쉬운 상태로 감압한다.Accordingly, the refrigerating capillary tube 42 receives the refrigerant from the first evaporator 35 through the three-way valve 50 and reduces the pressure in a state where it is easy to evaporate in the refrigerating chamber 3.

그리고, 냉장용 증발기(47)에서는 상기 냉장용 모세관(42)에서 감압된 냉매를 받아서 냉장용 팬(47a)에 의해 송풍되는 공기를 냉매의 증발잠열에 의해 냉각시킨다.The refrigeration evaporator 47 receives the refrigerant depressurized by the refrigeration capillary tube 42 and cools the air blown by the refrigeration fan 47a by the latent heat of evaporation of the refrigerant.

이때, 상기 냉장용 증발기(47)에서 냉각된 저온저압의 기체냉매는 다시 압축기(10)로 흡입되면서 제4와 같이 반복순환되는 냉동싸이클을 형성한다.At this time, the low-temperature low-pressure gas refrigerant cooled in the refrigeration evaporator 47 is sucked into the compressor 10 again to form a refrigeration cycle that is repeatedly circulated as shown in the fourth.

상기와 같이 냉동싸이클이 반복순환함으로써 냉장실(3)이 계속 냉각되어 일정온도이하가 되면, 단자(COM')가 접점단자(L')로 접속되어 교유전원입력단(11)의 상용교류전압이 냉장용 팬(47a)에 인가되지 않고, 압축기(10)도 오프된다.When the refrigerating cycle is repeatedly cycled as described above, when the refrigerating chamber 3 continues to cool and reaches a predetermined temperature or less, the terminal COM 'is connected to the contact terminal L' and the commercial AC voltage of the AC power input terminal 11 is refrigerated. The compressor 10 is also turned off without being applied to the dragon fan 47a.

상기의 설명에서와 같이 본 고안에 의한 냉장고의 냉각제어장치에 의하면, 냉동실, 냉장실 및 야채실에 각각의 목적온도(예를 들어, -18℃, 3℃, 6℃)별로 증발기를 설치하여 상기 냉동실과 냉장실의 고내온도에 따라 증발기를 각각 제어하여 압축기의 구동에 따른 소비전력을 감소시킴으로써 에너지효율을 상승시킬뿐만 아니라 냉장 효과를 향상시킬 수 있다는 뛰어난 효과가 있다. 그리고, 야채실용 증발기에 의해 야채실을 독립적으로 밀폐시킴으로써 다량의 수분을 함유한 야채실의 공기가 냉동/냉장용 증발기의 표면에 착상되는 것을 방지하여 상기 냉동/냉장용 증발기의 열교환효율을 향상시킬 뿐만 아니라 제상운전에 따른 에너지손실을 감소시킬 수 있다는 뛰어난 효과가 있다.According to the cooling control apparatus of the refrigerator according to the present invention as described above, in the freezer compartment, the refrigerator compartment and the vegetable compartment by installing an evaporator for each target temperature (for example, -18 ° C, 3 ° C, 6 ° C) By controlling the evaporator in accordance with the high internal temperature of the refrigerator compartment and reducing the power consumption according to the operation of the compressor, there is an excellent effect that not only increases the energy efficiency but also improves the refrigeration effect. In addition, by independently sealing the vegetable compartment by the vegetable compartment evaporator, it is possible to prevent the air in the vegetable compartment containing a large amount of moisture from forming on the surface of the freezer / refrigeration evaporator, thereby improving the heat exchange efficiency of the freezer / refrigeration evaporator. There is an excellent effect that can reduce the energy loss of the defrosting operation.

Claims (1)

냉매를 압축하는 압축기(10)와, 상기 압축된 냉매를 응축하는 응축기(20)와, 냉동실(2)의 고내온도를 감지하는 냉동용 서머스탯(61)과, 냉장실(3)의 고내온도를 감지하는 냉장용 서머스탯(62)을 구비한 냉장고에 있어서, 상기 응축기(20)로부터 유입된 냉매를 야채실(4)에서 증발할 수 있도록 감압하는 제1모세관(30)과, 상기 제1모세관(30)으로부터 유입된 냉매의 증발잠열에 의해 상기 야채실의 공기를 냉각하는 제1증발기(35)과, 상기 냉동용 및 냉장용 서모스탯(61, 62)에서 감지된 상기 냉동실 및 냉장실의 고내온도에 따라, 상기 제1증발기(35)로부터 유입되는 냉매의 흐름을 하기 냉동용 모세관(41) 또는 하기 냉장용 모세관(42)으로 전환하는 3방향밸브(50)와, 상기 3방향밸브(50)를 통해 유입되는 냉매를 상기 냉동실(2)에서 증발할 수 있도록 감압하는 냉동용 모세관(41)과, 상기 3방향밸브(50)를 통해 유입되는 냉매를 상기 냉장실(3)에서 증발할 수 있도록 감압하는 냉장용 모세관(42)과, 상기 냉동용 모세관(41)으로부터 유입된 냉매의 증발잠열에 의해 상기 냉동실(2)의 공기를 냉각하는 냉동용 증발기(46)와, 상기 냉장용 모세관(42)으로부터 유입된 냉매의 증발잠열에 의해 상기 냉장실(3)의 공기를 냉각하는 냉장용 증발기(47)를 포함하여 구성된 것을 특징으로 하는 냉장고의 냉각제어장치.The compressor 10 for compressing the refrigerant, the condenser 20 for condensing the compressed refrigerant, the refrigeration thermostat 61 for detecting the internal temperature of the freezer compartment 2, and the internal temperature of the refrigerating compartment 3 In the refrigerator having a refrigerated thermostat 62 for sensing, the first capillary tube 30 and the first capillary tube (30) for depressurizing the refrigerant flowing from the condenser 20 to evaporate in the vegetable chamber (4) 30) the first evaporator 35 cooling the air in the vegetable compartment by the latent heat of evaporation of the refrigerant introduced from the refrigerant, and the inside temperatures of the freezing compartment and the refrigerating compartment detected by the freezing and refrigerating thermostats 61 and 62. Accordingly, the three-way valve 50 and the three-way valve 50 for converting the flow of the refrigerant flowing from the first evaporator 35 to the following freezing capillary tube 41 or the following refrigeration capillary tube 42 Refrigeration capillary for reducing the pressure so that the refrigerant flowing through the evaporation in the freezing chamber (2) And a refrigerating capillary tube 42 for reducing the pressure of the refrigerant flowing through the three-way valve 50 to evaporate in the refrigerating chamber 3, and a refrigerant flowing from the refrigerating capillary tube 41. Refrigeration evaporator 46 for cooling the air in the freezer compartment 2 by latent heat of evaporation and refrigeration for cooling the air in the refrigerating compartment 3 by latent heat of evaporation of the refrigerant introduced from the refrigerating capillary tube 42. Cooling control device of the refrigerator, characterized in that comprising an evaporator (47).
KR2019930017511U 1993-09-03 1993-09-03 Refrigerator control method for a refrigerator KR0127650Y1 (en)

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