KR0128748Y1 - Cooling apparatus for a refrigerator - Google Patents

Cooling apparatus for a refrigerator Download PDF

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Publication number
KR0128748Y1
KR0128748Y1 KR2019940022354U KR19940022354U KR0128748Y1 KR 0128748 Y1 KR0128748 Y1 KR 0128748Y1 KR 2019940022354 U KR2019940022354 U KR 2019940022354U KR 19940022354 U KR19940022354 U KR 19940022354U KR 0128748 Y1 KR0128748 Y1 KR 0128748Y1
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KR
South Korea
Prior art keywords
evaporator
compressor
refrigerant
valve
positive pressure
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KR2019940022354U
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Korean (ko)
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KR960008813U (en
Inventor
신진규
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배순훈
대우전자주식회사
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Priority to KR2019940022354U priority Critical patent/KR0128748Y1/en
Publication of KR960008813U publication Critical patent/KR960008813U/en
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Publication of KR0128748Y1 publication Critical patent/KR0128748Y1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • 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
    • F25B41/22—Disposition of valves, e.g. of on-off valves or flow control valves between evaporator and compressor
    • 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
    • F25B2347/00—Details for preventing or removing deposits or corrosion
    • F25B2347/02—Details of defrosting cycles
    • 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
    • F25B2600/2521—On-off valves controlled by pulse signals

Abstract

본 고안은 냉장고의 냉동싸이클에 관한 것으로서, 더 자세하게는 성에가 착상된 증발기를 효과적으로 제상시킬 수 있는 제상수단을 가진 냉동싸이클에 관한 것이다.The present invention relates to a refrigeration cycle of a refrigerator, and more particularly to a refrigeration cycle having a defrost means capable of effectively defrosting the evaporator frosted.

종래에는 증발기(40)의 직하부에 고열을 발생시키는 히터(미도시)를 설치하여 증발기(40)에 착상된 성에를 강제로 제거하였으나, 제상시 히터의 고열로 인하여 냉동실 및 냉장실의 고내온도가 상승하여 저장물의 변질을 초래할뿐만 아니라, 이로 인한 고내의 더워진 냉기가 증발기(40)로 다시 귀환하여 이에 착상됨으로써, 증발기(40)의 제상시간이 길어지는 문제점이 있었다.Conventionally, a heater (not shown) that generates high heat directly below the evaporator 40 is installed to forcibly remove frost formed on the evaporator 40. However, due to the high heat of the heater, the internal temperature of the freezer and the refrigerating chamber is increased. As well as causing the deterioration of the stored matter, the resulting hot cold air back into the evaporator 40 and implanted therein, there is a problem that the defrost time of the evaporator 40 is long.

따라서, 본 고안의 목적은 이러한 종래의 문제점을 감안하여 안출한 것으로서, 제상시 종전처럼 제상히터를 사용하는 대신 냉동싸이클 작동시 발생하는 고열을 축열조에서 온수로 전환시킨 다음, 이 온수를 증발시기속으로 연속적으로 회귀시켜 증발기에 착상된 성에를 제거함으로써, 증발기의 제상효율을 향상시킴은 물론이고, 냉동싸이클중 고온을 유지하고 있는 냉매를 축열조에서 어느 정도 냉각시켜줌으로써 냉동효율을 극대화시킨 냉장고의 냉동싸이클을 제공함에 있다.Therefore, the object of the present invention was devised in view of such a conventional problem, and instead of using a defrost heater as in the case of defrosting, the high heat generated during the operation of the refrigeration cycle is converted from the heat storage tank to hot water, and then the hot water is evaporated. By freely returning to the evaporator to remove the frost on the evaporator by continuously returning to the refrigerator, as well as improving the defrosting efficiency of the evaporator, by cooling the refrigerant maintaining a high temperature in the refrigerating cycle to some extent in the refrigerating tank to maximize the freezing efficiency of the refrigerator In providing cycles.

이와 같은 목적을 달성하기 위하여 본 고안은 제2도와 같이 냉동싸이클(100)에 있어서, 상기 증발기(140)와 압축기(110) 사이에 재증발냉매관(160a)을 연통되게 설치한 후 이 재증발냉매관(160a) 일부에 가열코일(160b)에 의해 냉매를 고온화시킬 수 있는 축열조(150)를 형성설치하고, 상기 응축기(120)와 증발기(140) 사이의 냉매관(160c) 적소에 응축기(120)를 통한 냉매를 일시 저장하는 수액기(130)를 설치하는 한편, 상기 수액기(130)에서 증발기(140) 사이의 냉매관(160d) 적소에는 냉매순환을 제어하는 온도팽창변(170a)을, 상기 증발기(140)에서 축열조(150)로 설치된 재증발냉매관(160a) 사이에는 정압팽창변(170b)을, 그리고 상기 증발기(140)와 정압팽창변(170b) 사이에서 압축기(110)와 연통된 냉매관(160e) 적소에는 냉매순환을 제어하는 전자변(170c)을, 상기 압축기(110)에서 증발기(140) 사이의 냉매관(160f) 적소에도 역시 전자변(170d)을 각각 설치하여 냉동작동시에는 압축기(110)에서 증발기(140) 사이의 전자변(170d)과, 정압팽창변(170b)은 차단되는 동시에, 증발기(140)에서 압축기(110) 사이의 전자변(170c)은 개방되면서 냉매가 압축기(110) - 가열코일(160b) - 응축기(120) - 수액기(130) - 온도팽창변(170a) - 증발기(140) - 압축기(110) 순으로 연속순환되도록 하고, 제상작동시에는 압축기(110)에서 증발기(140) 사이의 전자변(170d)과, 정압팽창변(170b)은 개방되는 동시에, 증발기(140)에서 압축기(110) 사이의 전자변(170c)은 차단되면서 냉매가 압축기(110) - 증발기(140) - 정압팽창변(170b) - 재증발냉매관(160a) - 압축기(110) 순으로 연속순환하면서 제상을 할 수 있도록 한 것이다.In order to achieve the above object, the present invention, in the refrigerating cycle 100 as shown in Figure 2, after the re-evaporation refrigerant pipe 160a is installed in communication between the evaporator 140 and the compressor 110, the re-evaporation A heat storage tank 150 may be formed in a portion of the refrigerant pipe 160a to heat the refrigerant by a heating coil 160b, and a condenser may be disposed in place of the refrigerant pipe 160c between the condenser 120 and the evaporator 140. While installing the receiver 130 to temporarily store the refrigerant through the 120, the temperature expansion side 170a for controlling the refrigerant circulation in place of the refrigerant pipe 160d between the evaporator 140 in the receiver 130. In between the evaporator 140, the re-evaporation refrigerant pipe (160a) installed in the heat storage tank 150, the positive pressure expansion side (170b), and between the evaporator 140 and the positive pressure expansion side (170b) communicated with the compressor (110) In the appropriate place of the refrigerant pipe 160e, the electronic valve 170c for controlling the refrigerant circulation is evaporated by the compressor 110. In addition, the electronic valve 170d is installed at the proper place between the refrigerant pipes 160f between the 140, and the electronic valve 170d and the positive pressure expansion valve 170b between the compressor 110 and the evaporator 140 are blocked during the refrigerating operation. At the same time, the electron valve 170c between the compressor 110 in the evaporator 140 is opened, and the refrigerant flows through the compressor 110-the heating coil 160b-the condenser 120-the receiver 130-the temperature expansion valve 170a- Evaporator 140-The compressor 110 is continuously circulated in order, and during the defrosting operation, the electron valve 170d and the positive pressure expansion valve 170b between the compressor 110 and the evaporator 140 are opened, and the evaporator 140 is opened. ) While the electronic valve 170c between the compressor 110 is blocked while the refrigerant is continuously circulated in the order of the compressor 110-the evaporator 140-the positive pressure expansion valve 170b-the flash steam refrigerant 160a-the compressor 110 in order. It is to be able to defrost.

Description

냉장고의 냉각장치Chiller of refrigerator

제1도는 종래 기술에 따른 냉동싸이클의 계통도.1 is a schematic diagram of a refrigeration cycle according to the prior art.

제2도는 본 고안에 따른 냉동싸이클의 계통도.2 is a schematic diagram of a refrigeration cycle according to the present invention.

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

100 : 냉동싸이클 110 : 압축기100: refrigeration cycle 110: compressor

120 : 응축기 130 : 수액기120: condenser 130: receiver

140 : 증발기 150 : 축열조140: evaporator 150: heat storage tank

160a : 재증발냉매관 160b : 가열코일160a: re-evaporation refrigerant pipe 160b: heating coil

160c,160d,160e,160f : 냉매관 170a : 온도팽창변160c, 160d, 160e, 160f: refrigerant pipe 170a: temperature expansion valve

170b : 정압팽창변 170c,170d : 전자변170b: Positive expansion valve 170c, 170d: Electronic valve

본 고안은 냉장고의 냉동싸이클에 관한 것으로서, 더 자세하게는 성에가 착상된 증발기를 효과적으로 제상시킬 수 있는 제상수단을 가진 냉각장치에 관한 것이다.The present invention relates to a refrigeration cycle of a refrigerator, and more particularly, to a cooling apparatus having a defrost means capable of effectively defrosting an evaporator frosted.

일반적으로 통상적인 냉동싸이클을 개략적으로 설명하면, 제1도에 도시된 바와 같이 압축기(10) - 응축기(20) - 모세관(30) - 증발기(40) - 압축기(10)순으로 냉매가 연속순환하면서 소망하는 냉동을 수행하게 되며, 이 과정에서 냉동싸이클(1)의 차가운 증발기(40)가 고내로부터 귀환된 더운 냉기로 인하여 성에가 생겨 냉동효율을 극히 저하시키므로 종래에는 상기 증발기(40)의 직하부에 고열을 발생시키는 히터(미도시)를 설치하여 증발기(40)에 착상된 성에를 강제로 제거하였으나, 제상시 히터의 고열로 인하여 냉동실 및 냉장실의 고내온도가 상승하여 저장물의 변질을 초래하였을 뿐만 아니라, 이로 인한 고내의 더워진 냉기가 증발기(40)로 다시 귀환하여 이에 착상됨으로써, 증발기(40)의 제상시간이 길어지는 문제점이 있었다.In general, a conventional refrigeration cycle is described schematically, in which the refrigerant is continuously circulated in the order of the compressor 10-condenser 20-capillary 30-evaporator 40-compressor 10 as shown in FIG. While performing the desired refrigeration, in this process, the cold evaporator 40 of the freezing cycle (1) due to the hot cold air returned from the inside of the frost caused by the extremely low freezing efficiency, so conventionally the direct of the evaporator 40 Although the frost formed on the evaporator 40 was forcibly removed by installing a heater (not shown) that generates high heat in the lower part, the internal temperature of the freezer compartment and the refrigerating compartment increased due to the high temperature of the heater during defrosting, resulting in deterioration of the stored matter. In addition, the cold air in the chamber is returned to the evaporator 40 and implanted therein, resulting in a long defrost time of the evaporator 40.

따라서, 본 고안의 목적은 이러한 종래의 문제점을 감안하여 안출한 것으로서, 제상시 종전처럼 제상히터를 사용하는 대신 냉동싸이클 작동시 발생하는 고열을 축열조에서 온수로 전환시킨 다음, 이 온수를 증발기속으로 연속적으로 회귀시켜 증발기에 착상된 성에를 제거함으로써, 증발기의 제상효율을 향상시킴은 물론이고, 냉동싸이클중 고온을 유지하고 있는 냉매를 축열조에서 어느 정도 냉각시켜줌으로써 냉동효율을 극대화시킨 냉장고의 냉각장치를 제공함에 있다.Therefore, the object of the present invention was devised in view of such a conventional problem, and instead of using a defrost heater as in the case of defrosting, the high heat generated during the operation of the refrigeration cycle is converted from the heat storage tank to the hot water, and then the hot water is transferred to the evaporator. By revolving continuously to remove the frost formed on the evaporator, as well as to improve the defrosting efficiency of the evaporator, the cooling device of the refrigerator that maximizes the freezing efficiency by cooling to some extent in the heat storage tank the refrigerant holding a high temperature in the freezing cycle In providing.

이와 같은 목적을 달성하기 위하여 본 고안은 압축기 - 응축기 - 모세관 - 증발기 - 압축기순으로 연속순환하는 냉동싸이클에 있어서, 상기 증발기와 압축기 사이에 재증발냉매관을 연통되게 설치한 후 이 재증발냉매관 일부에 가열코일에 의해 냉매를 고온화시킬 수 있는 축열조를 형성설치하고, 상기 응축기와 증발기 사이의 냉매관 적소에는 응축기를 통한 냉매를 일시 저장하는 수액기를 설치하는 한편, 상기 수액기에서 증발기 사이의 냉매관 적소에는 냉매순환을 제어하는 온도팽창변을, 상기 증발기에서 축열조로 설치된 재증발냉매관 사이에는 정압팽창변을, 그리고 상기 증발기와 정압팽창변 사이에서 압축기와 연통된 냉매관 적소에는 냉매순환을 제어하는 전자변을, 상기 압축기에서 증발기 사이의 전자변과, 정압팽창변은 차단되는 동시에, 증발기에서 압축기 사이의 전자변은 개방되면서 냉매가 압축기 - 가열코일 - 응축기 - 수액기 - 온도팽창변 - 증발기 - 압축기 순으로 연속순환되도록 하고, 제상작동시에는 압축기에서 증발기 사이의 전자변과, 정압팽창변은 개방되는 동시에, 증발기에서 압축기 사이의 전자변은 차단되면서 냉매가 압축기 - 증발기 - 정압팽창변 - 재증발냉매관 - 압축기 순으로 연속순환토록 하여서 된 특징이 있다.In order to achieve the above object, the present invention is a refrigeration cycle in which the compressor-condenser-capillary-evaporator-compressor is continuously circulated, and the re-evaporation refrigerant pipe is installed in communication between the evaporator and the compressor. A heat storage tank may be formed in a portion to heat the refrigerant by a heating coil, and a receiver for temporarily storing the refrigerant through the condenser may be installed in the refrigerant pipe between the condenser and the evaporator, and the refrigerant between the receiver and the evaporator. A temperature expansion valve for controlling the refrigerant circulation in the pipe position, a positive pressure expansion valve between the re-evaporation refrigerant pipe installed in the heat storage tank in the evaporator, and an electronic valve for controlling the refrigerant circulation in the refrigerant pipe in communication with the compressor between the evaporator and the positive pressure expansion valve. At the same time, the electronic valve and the positive pressure expansion valve between the evaporator in the compressor is blocked, In the evaporator, the electron valve is opened between the compressors and the refrigerant is continuously circulated in the order of compressor-heating coil-condenser-receiver-temperature expansion valve-evaporator-compressor.In the defrosting operation, the electron valve between the compressor and the evaporator and the positive pressure expansion valve are opened. At the same time, the electronic valve between the compressor in the evaporator is blocked while the refrigerant is continuously circulated in the order of compressor-evaporator-positive pressure expansion valve-re-evaporation refrigerant pipe-compressor.

이하, 본 고안의 바람직한 일실시예를 첨부도면에 의거하여 상세히 설명한다.Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

제2도는 본 고안에 따른 냉동싸이클의 계통도로서, 냉동싸이클(100)에 있어서, 상기 증발기(140)에서 압축기(110) 사이에 재증발냉매관(160a)을 연통되게 설치한 후 이 재증발냉매관(160a) 일부에 압축기(110)에서 응축기(120) 사이로 설치된 가열코일(160b)에 의해 냉매를 고온화시킬 수 있는 축열조(150)를 형성설치한다. 즉 압축기(110)로부터 나온 고온화된 냉매로 상기 축열조(150) 내의 물을 가열시켜 재증발냉매관(160a)을 흐르는 냉매를 데워준다.2 is a schematic diagram of a refrigerating cycle according to the present invention. In the refrigerating cycle 100, the re-evaporation refrigerant tube 160a is installed in communication between the evaporator 140 and the compressor 110, and then the re-evaporation refrigerant. A heat storage tank 150 may be formed in a portion of the tube 160a to heat the refrigerant by a heating coil 160b installed between the compressor 110 and the condenser 120. That is, the refrigerant flowing from the compressor 110 heats the water in the heat storage tank 150 to heat the refrigerant flowing through the re-evaporation refrigerant pipe 160a.

상기한 응축기(120)와 증발기(140) 사이의 냉매관(160c) 적소에는 응축기(120)를 통한 냉매를 일시 저장, 공급하는 수액기(130)를 설치한다.In place of the refrigerant pipe 160c between the condenser 120 and the evaporator 140, a receiver 130 for temporarily storing and supplying the refrigerant through the condenser 120 is installed.

상기한 수액기(130)에서 증발기(140) 사이의 냉매관(160d) 적소에는 액화된 냉매가 고온, 고압인 상태로 증발기(140)에 공급되는 것을 저지함과 동시에 냉매순환을 통제하는 온도팽창변(170a)을 설치하고, 상기 증발기(140)에서 축열조(150)내로 설치된 재증발냉매관(160a) 사이에는 정압팽창변(170b)을 설치한다.The temperature expansion valve which prevents the liquefied refrigerant from being supplied to the evaporator 140 in a state of high temperature and high pressure in the refrigerant tube 160d between the receiver 130 and the evaporator 140 and controls the refrigerant circulation. A 170a is installed, and a static expansion valve 170b is installed between the re-evaporation refrigerant tubes 160a installed in the heat storage tank 150 in the evaporator 140.

그리고, 상기 증발기(140)와 정압팽창변(170b) 사이에서 압축기(110)와 연통된 냉매관(160e) 적소에는 단순히 냉매순환을 제어하는 전자변(170c)을 설치하고, 상기 압축기(110)에서 증발기(140) 사이의 냉매관(160f) 적소에도 역시 냉매순환을 제어하는 전자변(170d)을 설치한다.In addition, in place of the refrigerant pipe 160e communicating with the compressor 110 between the evaporator 140 and the positive pressure expansion side 170b, an electronic valve 170c for simply controlling the refrigerant circulation is installed and the evaporator in the compressor 110. An electron valve 170d for controlling the refrigerant circulation is also provided in place of the refrigerant pipe 160f between the 140.

이와 같이 냉동싸이클(100)을 구성한 다음, 상기한 다수의 변(170a)(170b)(170c)(170d)들을 마이콤(미도시)에 의해 제어되도록 한다.After the refrigeration cycle 100 is configured as described above, the plurality of sides 170a, 170b, 170c, and 170d described above are controlled by a microcomputer (not shown).

위에서 설명한 냉동싸이클(100)은 본 고안의 한 가능한 실시예에 불과하며, 예컨대 이의 구성은 앞서 설명한 본 고안의 범위내에서 얼마든지 그 변경이 가능하다.The refrigeration cycle 100 described above is only one possible embodiment of the present invention, for example, its configuration can be changed to any number within the scope of the present invention described above.

이와 같이 구성된 본 고안의 작용을 살펴보면 다음과 같다.Looking at the operation of the present invention configured as described above are as follows.

먼저, 냉동을 수행하고자 할 시에는 제2도의 일점쇄선 화살표와 같이 마이콤이 이의 신호를 받아 압축기(110)에서 증발기(140) 사이의 전자변(170d)과, 증발기(140)에서 축열조(150)내로 설치된 재증발냉매관(160a) 사이의 정압팽창변(170b)을 차단시킴과 동시에, 증발기(140)에서 압축기(110) 사이의 전자변(170c)은 개방시켜 냉매가 압축기(110) - 가열코일(160b) - 응축기(120) - 수액기(130) - 온도팽창변(170a) - 증발기(140) - 압축기(110) 순으로 연속순환되도록 하여 각 고내의 냉동을 실시한다.First, when the refrigeration is to be performed, as shown by the dashed-dotted arrow of FIG. 2, the microcomputer receives its signal from the compressor 110 to the electron valve 170d between the evaporator 140 and the evaporator 140 into the heat storage tank 150. At the same time, the positive expansion valve 170b between the installed evaporative refrigerant pipes 160a is blocked, and the electron valve 170c between the compressor 110 and the evaporator 140 is opened to allow the refrigerant to flow through the compressor 110-the heating coil 160b. ) The condenser 120-the receiver 130-the temperature expansion side 170a-the evaporator 140-compressor 110 to be continuously circulated in order to perform the refrigeration in each chamber.

상기 증발기(140)에 생긴 성에를 제상하고자 할 시에는 제2도의 실선화살표와 같이 압축기(110)에서 증발기(140) 사이의 전자변(170d)과, 정압팽창변(170b)은 개방되는 동시에, 증발기(140)에서 압축기(110) 사이의 전자변(170c)은 차단되면서 냉매가 압축기(110) - 증발기(140) - 정압팽창변(170b) - 재증발냉매관(160a) - 압축기(110) 순으로 연속순환되도록 하는데, 이때 축열조(150)를 지나는 재증발냉매관(160a)속의 냉매가 고온화된 상태에서 증발기(140)속을 연속순환하므로서 상기 증발기(140)로 더운 열을 방출하여 이에 붙어 있는 성에를 제거한다.When defrosting the frost generated in the evaporator 140, the electron valve 170d and the positive pressure expansion valve 170b between the compressor 110 and the evaporator 140 are opened at the same time as the solid arrow of FIG. In 140, the electronic valve 170c between the compressor 110 is blocked, and the refrigerant is continuously circulated in the order of the compressor 110-the evaporator 140-the positive pressure expansion valve 170b-the flash steam refrigerant 160a-the compressor 110 in order. In this case, the refrigerant in the re-evaporation refrigerant tube (160a) passing through the heat storage tank 150 is continuously circulated in the evaporator 140 in a state where the temperature is high temperature to release the heat to the evaporator 140 to remove the frost attached to it. do.

상기 증발기(140)의 제상이 완료되면, 마이콤이 이를 감지하여 전술한 바와 같은 계통을 따라 냉동을 실시한다.When the defrost of the evaporator 140 is completed, the microcomputer detects this and performs freezing along the system as described above.

전술한 바와 같이 본 고안은 제상시 종전처럼 제상히터를 사용하는 대신 냉동싸이클(100) 작동시 발생하는 고열을 축열조(150)에서 온수로 전환시킨 다음, 이 온수를 증발기(140)속으로 연속적으로 회귀시켜 증발기(140)에 착상된 성에를 제거함으로써, 증발기(140)의 제상효율을 향상시킴은 물론이고, 냉동싸이클(100)중 고온을 유지하고 있는 냉매를 축열조(150)에서 상대적으로 어느정도 냉각시켜줌으로써 냉동효율을 극대화시킨 효과가 있다.As described above, the present invention converts the high heat generated during operation of the refrigeration cycle 100 from the heat storage tank 150 to hot water instead of using the defrost heater as before when defrosting, and then continuously converts the hot water into the evaporator 140. By returning to remove the frost formed on the evaporator 140, not only to improve the defrosting efficiency of the evaporator 140, but also to cool the refrigerant maintaining the high temperature in the refrigerating cycle 100 to a certain degree relatively in the heat storage tank 150. It has the effect of maximizing the refrigeration efficiency.

Claims (1)

냉동싸이클(100)에 있어서, 상기 증발기(140)와 압축기(110) 사이에 재증발냉매관(160a)을 연통되게 설치한 후 이 재증발냉매관(160a) 일부에 가열코일(160b)에 의해 냉매를 고온화시킬 수 있는 축열조(150)를 형성설치하고, 상기 응축기(120)와 증발기(140) 사이의 냉매관(160c) 적소에는 응축기(120)를 통한 냉매를 일시 저장하는 수액기(130)를 설치하는 한편, 상기 수액기(130)에서 증발기(140) 사이의 냉매관(160d) 적소에는 냉매순환을 제어하는 온도팽창변(170a)을, 상기 증발기(140)에서 축열조(150)로 설치된 재증발냉매관(160a) 사이에는 정압팽창변(170b)을, 그리고 상기 증발기(140)와 정압팽창변(170b) 사이에서 압축기(110)와 연통된 냉매관(160e) 적소에는 냉매순환을 제어하는 전자변(170c)을, 상기 압축기(110)에서 증발기(140) 사이의 냉매관(160f) 적소에도 역시 전자변(170d)을 각각 설치하여 냉동작동시에는 압축기(110)에서 증발기(140) 사이의 전자변(170d)과, 정압팽창변(170b)은 차단되는 동시에, 증발기(140)에서 압축기(110) 사이의 전자변(170c)은 개방되면서 냉매가 압축기(110) - 가열코일(160b) - 응축기(120) - 수액기(130) - 온도팽창변(170a) - 증발기(140) - 압축기(110) 순으로 연속순환되도록 하고, 제상작동시에는 압축기(110)에서 증발기(140) 사이의 전자변(170d)과, 정압팽창변(170b)은 개방되는 동시에, 증발기(140)에서 압축기(110) 사이의 전자변(170c)은 차단되면서 냉매가 압축기(110) - 증발기(140) - 정압팽창변(170b) - 재증발냉매관(160a) - 압축기(110) 순으로 연속순환토록 하는 것을 특징으로 한 냉장고의 냉각장치.In the refrigeration cycle 100, the evaporator 140 and the compressor 110 are installed in communication with the re-evaporation refrigerant tube 160a and then a portion of the re-evaporation refrigerant tube 160a by the heating coil 160b. Receptor 130 is formed to form a heat storage tank 150 that can increase the temperature of the refrigerant, and temporarily stores the refrigerant through the condenser 120 in place of the refrigerant pipe (160c) between the condenser 120 and the evaporator 140. On the other hand, the temperature expansion valve (170a) for controlling the refrigerant circulation in place of the refrigerant pipe (160d) between the evaporator 140 in the receiver 130, the ash installed in the heat storage tank 150 in the evaporator (140). Electrostatic valve for controlling the refrigerant circulation in place of the positive pressure expansion valve (170b) between the evaporative refrigerant tube (160a) and the refrigerant pipe (160e) in communication with the compressor 110 between the evaporator 140 and the positive pressure expansion valve (170b) ( 170c), respectively, the electron valve 170d at the place of the refrigerant pipe 160f between the compressor 110 and the evaporator 140 is angled. During each refrigeration operation, the electromagnetic valve 170d between the compressor 110 and the evaporator 140 and the positive pressure expansion valve 170b are blocked, and the electron valve 170c between the compressor 110 and the compressor 110 is blocked. As the refrigerant is opened, the refrigerant is continuously circulated in the order of the compressor 110-the heating coil 160b-the condenser 120-the receiver 130-the temperature expansion side 170a-the evaporator 140-the compressor 110. At the same time, the electron valve 170d between the compressor 110 and the evaporator 140 and the positive pressure expansion valve 170b are opened, and the refrigerant valve is blocked while the electron valve 170c between the compressor 110 and the evaporator 140 is blocked. (110)-Evaporator (140)-Constant pressure expansion valve (170b)-Re-evaporation refrigerant pipe (160a)-Compressor (110) The cooling device of the refrigerator characterized in that the continuous circulation.
KR2019940022354U 1994-08-31 1994-08-31 Cooling apparatus for a refrigerator KR0128748Y1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
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KR101414860B1 (en) * 2012-08-01 2014-07-03 엘지전자 주식회사 Air conditioner and method of controlling the same
CN110940122A (en) * 2019-12-16 2020-03-31 宁波奥克斯电气股份有限公司 Defrosting control method and device and air source heat pump

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KR100380553B1 (en) * 2000-09-09 2003-04-23 한국식품개발연구원 Pre-drying, cooling, curing and ultra high humidity device to storage Post-harvest agicultural products with high quality for a long time

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101414860B1 (en) * 2012-08-01 2014-07-03 엘지전자 주식회사 Air conditioner and method of controlling the same
CN110940122A (en) * 2019-12-16 2020-03-31 宁波奥克斯电气股份有限公司 Defrosting control method and device and air source heat pump
CN110940122B (en) * 2019-12-16 2021-11-23 宁波奥克斯电气股份有限公司 Defrosting control method and device and air source heat pump

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