KR19990018454U - Refrigeration cycle device for refrigerator - Google Patents

Refrigeration cycle device for refrigerator Download PDF

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Publication number
KR19990018454U
KR19990018454U KR2019970031684U KR19970031684U KR19990018454U KR 19990018454 U KR19990018454 U KR 19990018454U KR 2019970031684 U KR2019970031684 U KR 2019970031684U KR 19970031684 U KR19970031684 U KR 19970031684U KR 19990018454 U KR19990018454 U KR 19990018454U
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KR
South Korea
Prior art keywords
refrigerant
refrigeration cycle
refrigerator
heat
condenser
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KR2019970031684U
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Korean (ko)
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KR200251008Y1 (en
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김전겸
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구자홍
엘지전자 주식회사
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Priority to KR2019970031684U priority Critical patent/KR200251008Y1/en
Publication of KR19990018454U publication Critical patent/KR19990018454U/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/37Capillary tubes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/40Fluid line arrangements

Abstract

본 고안은 냉장고의 냉동사이클장치에 관한 것으로, 종래 기술은 비교적 고압의 상태에서 증발기가 외부의 열을 흡입하여 냉매를 기화시켜야 하므로, 냉동사이클의 주요 목적인 주위로부터의 열량을 최대한 흡수하는데 한계가 발생하는 바, 이에 본 고안은 냉매가스를 고온고압 상태로 변화시키는 압축기(11)와, 그 압축기(11)와 연결되어 고온고압 상태의 냉매가스를 외부로 내부잠열을 발열시켜 상온고압 상태로 변화시키는 응축기(12)와, 그 응축기(12)에 연결되어 상온고압 상태의 냉매를 저온저압 상태로 변화시키는 팽창기구(13)와, 그 팽창기구(13)에 연결되어 냉매가 기화되면서 외부의 열을 흡수하는 증발기(14)와, 상기 각 구성요소를 연결하는 냉매관(15)을 포함하여 구성된 냉동사이클장치에 있어서, 상기 응축기(12)의 일단부에 냉매의 압력을 감소시키기 위한 감압수단(12a)을 설치함으로써 압축기로부터 나온 고압축의 냉매의 압력을 감압시켜 증발기에서 주위의 열량을 최대한 흡입하여 냉장고의 냉각효과를 극대화시킨다.The present invention relates to a refrigeration cycle apparatus of a refrigerator, and the prior art has a limitation in absorbing the maximum amount of heat from the surroundings, which is the main purpose of the refrigeration cycle, since the evaporator must vaporize the refrigerant by sucking external heat in a state of relatively high pressure. In this regard, the present invention is a compressor 11 for changing the refrigerant gas to a high temperature and high pressure state, and connected to the compressor 11 to heat the latent heat of the refrigerant gas in a high temperature and high pressure state to change to a room temperature and high pressure state The condenser 12, an expansion mechanism 13 connected to the condenser 12 to change the refrigerant at a normal temperature and high pressure state to a low temperature low pressure state, and connected to the expansion mechanism 13 to vaporize the refrigerant while evaporating the refrigerant. In a refrigeration cycle apparatus comprising an evaporator (14) for absorbing and a refrigerant pipe (15) connecting the components, the pressure of the refrigerant is reduced at one end of the condenser (12). The provision of the pressure reducing means (12a) for Pointing by reducing the pressure of highly compressed refrigerant from the compressor to the intake as much as possible the amount of heat around the evaporator to maximize the cooling effect of the refrigerator.

Description

냉장고용 냉동사이클장치Refrigeration cycle device for refrigerator

본 고안은 냉장고용 냉동사이클장치에 관한 것으로, 특히 응축기에서 냉매의 압력을 감압시켜 주위로부터의 열량을 최대한 흡수함으로써 증발기에서의 열교환율을 증가시켜 냉동효과를 향상시키는데 적합한 냉장고용 냉동사이클장치에 관한 것이다.The present invention relates to a refrigeration cycle apparatus for refrigerators, and more particularly to a refrigeration cycle apparatus for refrigerators suitable for improving the freezing effect by increasing the heat exchange rate in the evaporator by reducing the pressure of the refrigerant in the condenser to absorb the heat from the surroundings as much as possible will be.

일반적으로 냉장고는 일정한 냉동사이클의 순환원리에 의해 냉매가 순환되어 냉동실의 온도를 저하시키고, 냉동실의 냉기가 냉장고 내부의 냉동실과 냉장실을 순환하면서 냉장고 내부의 보관 식품을 냉동 및 냉장시키게 되는데, 이러한 종래 냉동사이클을 도 1에 도시한 바, 이에 대해 설명하면 다음과 같다.In general, the refrigerator is circulated by the circulating principle of a constant freezing cycle to lower the temperature of the freezer compartment, and the freezer to freeze and refrigerate the food stored in the refrigerator while circulating the freezer compartment and the refrigerating compartment inside the refrigerator. A refrigeration cycle is illustrated in FIG. 1, which will be described below.

도 1은 종래 냉장고용 냉동사이클장치를 도시한 개략도로서, 도시된 바와 같이, 종래 냉장고의 냉동사이클장치는 냉매가스가 고압상태로 유지되어 순환하는 고압부와, 냉매가스가 저압상태로 유지되어 순환하는 저압부가 연결되어 사이클을 이루고 있다.1 is a schematic view showing a conventional refrigeration cycle apparatus for a refrigerator, as shown, the conventional refrigeration cycle apparatus of the refrigerator is a high pressure portion circulating the refrigerant gas is maintained at a high pressure state, and the refrigerant gas is maintained at a low pressure state and circulated The low pressure section is connected to form a cycle.

상기 고압부는 저온저압의 기체상태의 냉매를 고온고압의 기체상태의 냉매로 변화시키는 압축기(1)와, 그 압축기(1)에서 변화된 고온고압의 기체상태의 냉매를 상온고압의 액체상태의 냉매로 응축시키는 응축기(2)로 구성되어 있다.The high pressure unit is a compressor (1) for converting a low-temperature, low-pressure gaseous refrigerant into a high-temperature high-pressure gaseous refrigerant, and the high-temperature, high-pressure gaseous refrigerant changed in the compressor (1) as a liquid refrigerant at room temperature and high pressure It is comprised by the condenser 2 which condenses.

그리고 상기 저압부는 상기 응축기(2)를 거친 상온고압의 액체냉매를 단열 팽창시켜 저온저압의 액체냉매로 변화시키는 팽창기구(3)와, 그 팽창기구(3)에서 변화된 저온저압의 액체상태의 냉매를 기체상태로 변화시키면서 외부의 열을 흡수하여 열교환하는 증발기(4)로 구성되어 있다.The low pressure unit expands the liquid refrigerant of room temperature and high pressure through the condenser 2 to adiabaticly expands the liquid refrigerant into a low temperature low pressure liquid refrigerant, and the low temperature and low pressure liquid refrigerant changed in the expansion mechanism 3. It is composed of an evaporator (4) that absorbs heat from the outside while changing it to a gas state.

이와 같이 구성된 종래 냉장고의 냉동사이클장치는 냉장고에 전원을 인가하면 압축기(1)가 작동하면서 냉매가스가 고압부와 저압부를 통해 사이클을 순환하면서 냉각기능을 발휘하게 되는데, 먼저 고압부에서 냉매가 충분히 충진된 후 저압부로 유입되어야 냉각성능이 나오게 된다.In the conventional refrigeration cycle apparatus of the refrigerator configured as described above, when the refrigerator 1 is powered, the compressor 1 operates and the refrigerant gas circulates through the high pressure and low pressure sections, thereby exerting a cooling function. First, the refrigerant is sufficiently charged in the high pressure section. After entering the low pressure part, the cooling performance comes out.

즉, 냉동사이클의 증발기(4)에서 액체상태의 냉매가 기체상태의 냉매가스로 변환하면서 외부의 열을 흡수하는 것을 이용하여 냉장고 내부의 온도를 차갑게 유지하는 것이다.That is, in the evaporator 4 of the refrigerating cycle, the refrigerant in the liquid state is converted into gaseous refrigerant gas to absorb the heat from the outside, thereby keeping the temperature inside the refrigerator cold.

도 2는 종래 기술에 의한 냉장고용 냉동사이클의 몰리에르 선도로서, A-B 구간은 압축기(11)에서 냉매가 압축되는 압축과정이고, B-C 구간은 응축기(12)에서 냉매가 응축되는 응축과정, C-D 구간은 모세관(13)에서 냉매가 팽창되는 과정, D-E 구간은 증발기(14)에서 액체냉매가 증발하여 실제적으로 냉동효과를 얻는 증발과정이다.2 is a Moliere diagram of a refrigerator refrigeration cycle according to the prior art, AB section is a compression process of the refrigerant is compressed in the compressor (11), BC section is a condensation process of the refrigerant is condensed in the condenser 12, CD section is In the process of expanding the refrigerant in the capillary tube 13, the DE section is an evaporation process in which the liquid refrigerant evaporates in the evaporator 14 to actually obtain a freezing effect.

상기 E점 이후의 구간은 비록 증발이 완료된 기체냉매 구간이지만, 기체 냉매의 온도가 증발기(14)를 통과하는 냉동실 내의 공기온도와 거의 동등하기 때문에 실제 냉동효과는 거두지 못하고 있으므로, 실제의 냉동효과는 D-E 구간의 h1-h3의 열량이다.Although the section after the point E is a gas refrigerant section in which the evaporation is completed, since the temperature of the gas refrigerant is almost the same as the air temperature in the freezer compartment passing through the evaporator 14, the actual freezing effect is not achieved, the actual freezing effect is The amount of heat in h1-h3 of the DE section.

그러나, 상술한 바와 같은 종래 기술은 비교적 고압의 상태에서 증발기(4)가 외부의 열을 흡입하여 냉매를 기화시켜야 하므로, 냉동사이클의 주요 목적인 증발기(4)에서 주위로부터의 열량을 최대한 흡수하는데 한계가 발생하는 문제점이 있었다.However, the prior art as described above is limited to absorbing the maximum amount of heat from the surroundings in the evaporator 4, which is the main purpose of the refrigerating cycle, since the evaporator 4 must vaporize the refrigerant by sucking external heat at a relatively high pressure. There was a problem that occurred.

따라서, 본 고안은 상기 문제점을 감안하여 안출된 것으로, 냉매의 압력을 감소시켜 주위로부터의 열량을 최대한 흡수하여 증발기의 기화작용을 극대화시켜 냉장고의 냉각효과를 향상시킬 수 있는 냉장고용 냉동사이클장치를 제공하는데 그 목적이 있다.Therefore, the present invention has been made in view of the above problems, by reducing the pressure of the refrigerant to maximize the evaporation of the evaporator by absorbing the maximum amount of heat from the surroundings to improve the cooling effect of the refrigerator refrigeration cycle apparatus for the refrigerator The purpose is to provide.

도 1은 종래 냉장고용 냉동사이클장치를 도시한 개략도,1 is a schematic view showing a conventional refrigeration cycle device for a refrigerator,

도 2는 종래 냉장고용 냉동사이클에 의한 압력-엔탈피 선도를 보인 그래프,Figure 2 is a graph showing the pressure-enthalpy diagram by the conventional refrigeration cycle for refrigerators,

도 3은 본 고안에 의한 냉장고용 냉동사이클장치를 도시한 개략도,3 is a schematic view showing a refrigeration cycle apparatus for a refrigerator according to the present invention,

도 4는 본 고안에 의한 냉장고용 냉동사이클의 압력-엔탈피 선도를 보인 그래프.Figure 4 is a graph showing the pressure-enthalpy diagram of the refrigerator refrigeration cycle according to the present invention.

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

11 ; 압축기 12 ; 응축기11; Compressor 12; Condenser

12a ; 감압관 13 ; 팽창기구12a; Pressure reduction tube 13; Inflation mechanism

14 ; 증발기 15 ; 냉매관14; Evaporator 15; Refrigerant tube

상기 목적을 달성하기 위한 본 고안은, 냉매가스를 고온고압 상태로 변화시키는 압축기와, 그 압축기와 연결되어 고온고압 상태의 냉매가스를 외부로 내부잠열을 발열시켜 상온고압 상태로 변화시키는 응축기와, 그 응축기에 연결되어 상온고압 상태의 냉매를 저온저압 상태로 변화시키는 팽창기구와, 상기 팽창기구에 연결되어 냉매가 기화되면서 외부의 열을 흡수하는 증발기와, 상기 각 구성요소를 연결하는 냉매관을 포함하여 구성된 냉동사이클장치에 있어서, 상기 응축기의 일단부에 냉매의 압력을 감소시키기 위한 감압수단을 설치한 것을 특징으로 하는 냉장고용 냉동사이클장치가 제공된다.The present invention for achieving the above object is a compressor for changing the refrigerant gas to a high temperature and high pressure state, and a condenser connected to the compressor to heat the latent heat of the refrigerant gas in the high temperature and high pressure state to a room temperature and high pressure state, An expansion mechanism connected to the condenser to change the refrigerant at room temperature and high pressure to a low temperature low pressure state; an evaporator connected to the expansion mechanism to absorb external heat while the refrigerant is vaporized; and a refrigerant pipe connecting the respective components. In the refrigeration cycle device comprising a, there is provided a refrigeration cycle device for a refrigerator, characterized in that the pressure reducing means for reducing the pressure of the refrigerant at one end of the condenser.

이하, 본 고안에 의한 냉장고용 냉동사이클장치의 실시예를 첨부된 도면에 의거하여 설명하면 다음과 같다.Hereinafter, an embodiment of a refrigeration cycle apparatus for a refrigerator according to the present invention will be described with reference to the accompanying drawings.

도 3은 본 고안에 의한 냉장고용 냉동사이클장치를 보인 개략도로서, 이에 도시된 바와 같이, 본 고안의 냉동사이클장치는 냉매를 흡수하여 고온고압으로 압축하는 압축기(11)와, 그 압축기(11)에서 고온고압으로 압축된 냉매를 공기중에 방열하여 액화시키는 응축기(12)와, 그 응축기(12)에서 유입된 액체냉매를 감압하는 팽창기구(13)와, 그 팽창기구(13)를 통과한 저온저압의 액체냉매를 증발시켜 고내를 냉각시키는 증발기(14)와, 상기 각 구성요소들에 연결 설치되어 냉매의 이동통로가 되는 냉매관(15)으로 구성된다.3 is a schematic view showing a refrigeration cycle apparatus for a refrigerator according to the present invention, as shown in the present invention, the refrigeration cycle apparatus of the present invention absorbs the refrigerant and compresses it to high temperature and high pressure, and the compressor 11 Condenser 12 for liquefying and liquefying the refrigerant compressed to high temperature and high pressure in the air, an expansion mechanism 13 for depressurizing the liquid refrigerant introduced from the condenser 12, and a low temperature passing through the expansion mechanism 13. It consists of an evaporator 14 for cooling the inside of the liquid by evaporating the low pressure liquid refrigerant, and a refrigerant pipe 15 connected to each of the above components to be a moving passage of the refrigerant.

그리고 상기 응축기(12)의 일단부에는 압축기(11)를 통과한 냉매의 압력을 감소시키기 위해 냉매관(15)의 직경보다 작은 소정 길이의 모세관으로 형성된 감압관(12a)을 연통 형성한다.One end of the condenser 12 communicates with a pressure reducing tube 12a formed of a capillary tube having a predetermined length smaller than the diameter of the refrigerant tube 15 in order to reduce the pressure of the refrigerant passing through the compressor 11.

상기와 같이 구성된 본 고안에 의한 냉장고용 냉동사이클의 작용에 대해서 설명하면 다음과 같다.Referring to the operation of the refrigerator refrigeration cycle according to the present invention configured as described above are as follows.

냉장고의 냉동사이클장치는 냉장고에 전원을 인가하면 압축기(11)가 작동하면서 냉매가스가 고압부와 저압부를 통해 사이클을 순환하면서 냉각기능을 발휘하게 되는데, 먼저 고압부에서 냉매가 충분히 충진된 후 저압부로 유입되어야 냉각성능이 나오게 된다.The refrigeration cycle device of the refrigerator, when the power is applied to the refrigerator, the compressor 11 operates while the refrigerant gas circulates through the high pressure section and the low pressure section to perform a cooling function. First, the refrigerant is sufficiently filled in the high pressure section and then flows into the low pressure section. Only when cooling performance comes out.

즉, 냉동사이클 과정에서 증발기(14)에서 액체상태의 냉매가 기체상태의 냉매로 변화할 때 변화가 가장 잘 일어나는 상태는 저온저압의 상태이므로, 상기 압축기(11)에서 고온고압으로 압축된 냉매를 공기중에 방열시켜 액화시키는 응축기(12)의 일단부에 연통 형성된 감압관(12a)에 의해 압축된 냉매의 압력을 감소시켜 고내의 주위로부터 열량(h1-h3')을 최대한 흡입하여 방열 액화시킴으로써 액화된 냉매를 기화시키기 위한 증발기(14)의 열교환 성능을 향상시켜 냉장고의 냉각효율을 극대화시킨다.That is, when the liquid refrigerant in the evaporator 14 changes into a gaseous refrigerant in the refrigeration cycle, the state where change occurs best is a low temperature and low pressure state, and thus the refrigerant compressed at high temperature and high pressure in the compressor 11 is used. The pressure of the refrigerant compressed by the pressure reducing tube 12a formed in communication with one end of the condenser 12 for liquefying heat in the air is liquefied by maximizing suction of heat (h1-h3 ') from the circumference of the furnace. The heat exchange performance of the evaporator 14 for vaporizing the refrigerant is improved to maximize the cooling efficiency of the refrigerator.

즉 도 4에 도시된 바와 같이, 종래 냉장고의 냉동효과를 이루는 구간은 h1-h3에 해당하는 부분의 냉매에너지이지만, 본 고안에 의한 냉동사이클장치는 응축기에서 1차적으로 냉매를 감압시켜 h1-h3'에 해당하는 부분만큼 주위의 열을 흡입하여 증발기(14)에서 열교환을 하므로 최대한의 냉동효과를 얻을 수 있다.That is, as shown in Figure 4, the section that achieves the refrigeration effect of the conventional refrigerator is the refrigerant energy of the portion corresponding to h1-h3, the refrigeration cycle apparatus according to the present invention is to depressurize the refrigerant in the condenser first h1-h3 As the heat corresponding to the portion corresponding to 'takes heat exchange in the evaporator 14, the maximum freezing effect can be obtained.

이상에서와 같이 본 고안에 의한 냉장고용 냉동사이클장치는, 응축기의 일단부에 감압관을 연통 형성하여 압축기로부터 나온 고압축의 냉매의 압력을 감압시켜 증발기에서 주위의 열량을 최대한 흡입하여 냉장고의 냉각효과를 향상시킨다.As described above, the refrigerator refrigeration cycle apparatus according to the present invention, by forming a pressure-sensitive tube in one end of the condenser to reduce the pressure of the high-compression refrigerant from the compressor to suck the amount of heat around the evaporator to maximize the cooling effect of the refrigerator To improve.

Claims (2)

냉매가스를 고온고압 상태로 변화시키는 압축기와, 그 압축기와 연결되어 고온고압 상태의 냉매가스를 외부로 내부잠열을 발열시켜 상온고압 상태로 변화시키는 응축기와, 그 응축기에 연결되어 상온고압 상태의 냉매를 저온저압 상태로 변화시키는 팽창기구와, 그 팽창기구에 연결되어 냉매가 기화되면서 외부의 열을 흡수하는 증발기와, 상기 각 구성요소를 연결하는 냉매관을 포함하여 구성된 냉동사이클장치에 있어서, 상기 응축기의 일단부에 냉매의 압력을 감소시키기 위한 감압수단을 설치한 것을 특징으로 하는 냉장고용 냉동사이클장치.A compressor for changing the refrigerant gas to a high temperature and high pressure state, a condenser connected to the compressor to heat the latent heat of the internal refrigerant heat to a high temperature and high pressure state, and a refrigerant connected to the condenser at a normal temperature and high pressure state In the refrigeration cycle apparatus comprising an expansion mechanism for changing the low temperature low pressure state, an evaporator connected to the expansion mechanism to absorb the external heat while the refrigerant is vaporized, and a refrigerant pipe connecting the respective components, Refrigerating cycle apparatus for a refrigerator, characterized in that the pressure reducing means for reducing the pressure of the refrigerant at one end of the condenser. 제 1항에 있어서, 상기 감압수단은 응축기를 이루는 냉매관의 일단부를 직경이 작은 모세관으로 형성한 것을 특징으로 하는 냉장고용 냉동사이클장치.The refrigeration cycle apparatus for a refrigerator according to claim 1, wherein the decompression means is formed by a capillary tube having a small diameter at one end of the refrigerant pipe forming the condenser.
KR2019970031684U 1997-11-11 1997-11-11 Refrigeration cycle device for refrigerator KR200251008Y1 (en)

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