KR200308189Y1 - Refrigerator - Google Patents

Refrigerator Download PDF

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Publication number
KR200308189Y1
KR200308189Y1 KR2019980013373U KR19980013373U KR200308189Y1 KR 200308189 Y1 KR200308189 Y1 KR 200308189Y1 KR 2019980013373 U KR2019980013373 U KR 2019980013373U KR 19980013373 U KR19980013373 U KR 19980013373U KR 200308189 Y1 KR200308189 Y1 KR 200308189Y1
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KR
South Korea
Prior art keywords
compartment
evaporator
refrigerator
freezer compartment
refrigerant
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KR2019980013373U
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Korean (ko)
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KR20000003270U (en
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이수일
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삼성전자주식회사
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Priority to KR2019980013373U priority Critical patent/KR200308189Y1/en
Publication of KR20000003270U publication Critical patent/KR20000003270U/en
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Publication of KR200308189Y1 publication Critical patent/KR200308189Y1/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
    • F25B5/00Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
    • 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
    • F25B39/00Evaporators; Condensers
    • F25B39/02Evaporators
    • F25B39/028Evaporators having distributing means
    • 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
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F25D11/022Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators

Abstract

본 고안은, 냉동실 및 냉장실을 형성하는 캐비넷과, 압축기와, 상기 압축기로부터의 냉매를 응축하는 응축기를 갖는 냉장고에 있어서, 상기 응축기와 상기 압축기 사이에서 분기 및 합류되어 상호 병렬로 연결된 냉동실 배관 및 냉장실 배관과, 상기 각 배관 내에 설치되어 상기 냉동실 및 상기 냉장실에 각각 부속되는 냉동실 증발기 및 냉장실 증발기와, 상기 각 배관내에 상기 각 증발기의 유입측에 설치되는 냉동실 증발기 유입측 팽창수단 및 냉장실 증발기 유입측 팽창수단을 포함하는 것을 특징으로 하는 냉장고를 제공한다. 이에 의해, 냉동실 증발기 및 냉장실 증발기에 공급되는 냉매순환량을 조절하고 냉장실 증발기 및 냉동실 증발기로 들어가는 냉매의 온도 및 압력을 다르게 하여 냉동실 및 냉장실의 온도를 효율적으로 조절할 수 있도록 한다.The present invention provides a refrigerator having a cabinet forming a freezing compartment and a refrigerating compartment, a compressor, and a condenser condensing refrigerant from the compressor, wherein the freezer compartment piping and the refrigerating compartment are branched and joined between the condenser and the compressor and connected in parallel. A freezer compartment evaporator and a refrigerating compartment evaporator installed in each of the pipes and attached to the freezer compartment and the refrigerating compartment, respectively, and a freezer compartment evaporator inlet expansion means and a refrigerating compartment evaporator inlet expansion provided in each pipe in the inlet side of the evaporator; It provides a refrigerator comprising a means. As a result, the refrigerant circulating amount supplied to the freezer compartment evaporator and the refrigerator compartment evaporator may be adjusted, and the temperature of the refrigerant entering the refrigerator compartment evaporator and the freezer compartment evaporator may be changed to efficiently control the temperature of the freezer compartment and the refrigerator compartment.

Description

냉장고Refrigerator

본 고안은 냉장고에 관한 것으로서, 상세하게는, 냉동실 증발기 및 냉장실 증발기가 병렬로 연결된 구조의 냉동사이클을 갖는 냉장고에 관한 것이다.The present invention relates to a refrigerator, and more particularly, to a refrigerator having a freezing cycle having a structure in which a freezer compartment evaporator and a refrigerator compartment evaporator are connected in parallel.

도 1은 종래의 독립냉각 방식 냉장고의 측단면도이다. 도 1에서 보는 바와 같이, 종래의 독립냉각방식 냉장고는 단열구조의 본체(7)를 가지며, 그 내부에는 중간격벽(9)에 의해 구획된 냉장실(8a)과 냉동실(8b)이 형성되어 있다. 본체(7)의 후면 하부에는 냉매를 압축하기 위한 압축기(1)가 설치되어 있고, 냉장실(8a)과 냉동실(8b)의 후벽 내에는 압축기(1)에서 압축된 냉매를 수령하여 증발시킴으로써 냉기를 생성하는 냉장실 증발기(4a) 및 냉동실 증발기(4b)가 설치되어 있다. 냉장실 증발기(4a) 및 냉동실 증발기(4b)는 압축기(1)에 대해 상호 직렬로 연결되며, 이들에서 생성된 냉기는 냉장실팬(6a)과 냉동실팬(6b)에 의해 각각 냉장실(8a)과 냉동실(8b)에 공급된다.1 is a side cross-sectional view of a conventional independent cooling refrigerator. As shown in FIG. 1, the conventional independent cooling type refrigerator includes a main body 7 having a heat insulating structure, and a refrigerating chamber 8a and a freezing chamber 8b partitioned by an intermediate partition 9 are formed therein. A compressor 1 for compressing the refrigerant is provided in the lower rear portion of the main body 7, and inside the rear wall of the refrigerating chamber 8a and the freezing chamber 8b, the refrigerant compressed by the compressor 1 is received and evaporated. The refrigerator compartment evaporator 4a and the freezer compartment evaporator 4b which are produced | generated are provided. The refrigerator compartment evaporator 4a and the freezer compartment evaporator 4b are connected in series with the compressor 1, and the cold air generated therefrom is connected to the refrigerator compartment 8a and the freezer compartment 6b by the refrigerator compartment fan 6a and the freezer compartment 6b, respectively. It is supplied to 8b.

도 2는 도 1의 냉장고의 냉동사이클을 나타낸 블록도이다. 도 1 및 도 2에서 보는 바와 같이, 냉장고는 압축기(1), 응축기(2), 모세관(3) 및 냉장실 증발기(4a)와 냉동실 증발기(4b)를 가진다. 종래의 냉장고에서는, 이러한 요소들이 순서대로 배관(5)에 의하여 서로 연결되어 하나의 냉동사이클을 구성한다.2 is a block diagram illustrating a refrigerating cycle of the refrigerator of FIG. 1. As shown in FIGS. 1 and 2, the refrigerator has a compressor 1, a condenser 2, a capillary tube 3, a refrigerator compartment evaporator 4a and a freezer compartment evaporator 4b. In a conventional refrigerator, these elements are connected to each other by the pipes 5 in order to constitute one refrigeration cycle.

이러한 구성에 의하여, 종래의 냉장고에서는, 먼저, 압축기(1)가 저온, 저압의 기상 냉매를 압축하여 고온, 고압의 기상 냉매로 변환시킨다. 압축기(1)에 의하여 압축된 냉매는 응축기(2)로 들어간다. 응축기(2)는 고온, 고압의 기상 냉매를 상대적으로 저온인 주위와 열교환하여 기상의 냉매를 액화시킨다. 이 때, 응축기(2) 근처에는 열교환이 보다 효율적으로 되도록 하기 위하여 도시되지 않은 송풍팬이 설치된다. 응축기(2)를 거친 냉매는 고압 상태의 액냉매이다. 이 냉매가 냉매팽창수단의 하나인 모세관(3)을 통과하면, 냉매의 압력이 하강하며, 냉매의 온도도 함께 하강한다. 이 냉매는 먼저 냉장실 증발기(4a)로 들어가 이 냉매보다 상대적으로 온도가 높은 냉장실의 공기와 열교환을 하여, 냉장실의 온도를 하강시킨다. 냉장실 증발기(4a)를 나온 냉매는 이어 냉동실 증발기(4b)로 들어가 냉장실 증발기와 마찬가지로, 상대적으로 온도가 높은 냉동실의 공기와 열교환을 하여, 냉동실의 온도를 하강시킨다. 이 때, 냉장실 증발기 및 냉동실 증발기 근처에는 열교환을 효율적으로 하기 위하여 각각 냉장실 송풍팬(6a) 및 냉동실 송풍팬(6b)이 설치되어 있다. 그리고, 통상적으로 냉동실은 냉장실보다 낮은 온도로 유지되므로, 냉동실 증발기의 관이 냉장실 증발기의 관보다 길게 설치된다.With such a configuration, in the conventional refrigerator, first, the compressor 1 compresses a low-temperature, low-pressure gaseous refrigerant to convert it into a high-temperature, high-pressure gaseous refrigerant. The refrigerant compressed by the compressor 1 enters the condenser 2. The condenser 2 heat-exchanges the high-temperature, high-pressure gaseous refrigerant with a relatively low temperature liquefaction to liquefy the gaseous refrigerant. At this time, a blower fan (not shown) is installed near the condenser 2 so as to make the heat exchange more efficient. The refrigerant passing through the condenser 2 is a liquid refrigerant under high pressure. When this refrigerant passes through the capillary tube 3, which is one of the refrigerant expansion means, the pressure of the refrigerant decreases, and the temperature of the refrigerant also decreases. This refrigerant first enters the refrigerating chamber evaporator 4a to exchange heat with air in the refrigerating chamber having a relatively higher temperature than the refrigerant, thereby lowering the temperature of the refrigerating chamber. The refrigerant exiting the refrigerator compartment evaporator 4a then enters the freezer compartment evaporator 4b and exchanges heat with air in a freezer compartment having a relatively high temperature, similarly to the refrigerator compartment evaporator, thereby lowering the temperature of the freezer compartment. At this time, in the vicinity of the refrigerator compartment evaporator and the freezer compartment evaporator, a refrigerator compartment blower fan 6a and a freezer compartment blower 6b are respectively provided for efficient heat exchange. And, since the freezer compartment is usually maintained at a lower temperature than the refrigerator compartment, the tube of the freezer compartment evaporator is installed longer than the tube of the refrigerator compartment evaporator.

그러나, 이러한 종래 냉장고의 냉동사이클은, 냉동실 증발기 및 냉장실 증발기의 관 길이가 정해져 있고, 일렬로 연결되어 있으므로, 냉동실 및 냉장실의 온도를 적절하게 조절하기 위해서는, 압축기의 구동에 의하여 냉매순환량을 조절하여야 한다. 그러나, 이 방법으로는, 냉동실 및 냉장실의 온도가 연동하여 변화되므로 즉, 냉매순환량이 많아지면 냉동실 및 냉장실의 온도가 모두 하강하고, 냉매순환량이 적으지면 냉동실 및 냉장실의 온도가 모두 상승하는 방향으로만 변화되므로, 온도 조절의 범위를 제한받게 된다. 따라서, 종래의 냉장고에서는, 온도조절을 다양하게 하기 위하여 냉동실 및 냉장실에 온도감지 센서를 설치하고, 이 감지온도에 기초하여 압축기의 구동, 냉동실과 냉장실의 송풍팬의 구동 등을 제어하였다. 그러나, 이러한 방법은 제어방법이 복잡할 뿐만 아니라 복잡한 구조를 요하는 문제점이 있다.However, in the conventional refrigeration cycle of the refrigerator, the tube lengths of the freezer compartment evaporator and the refrigerator compartment evaporator are determined and connected in a line, and in order to properly control the temperatures of the freezer compartment and the refrigerating compartment, the refrigerant circulation amount must be adjusted by driving the compressor. do. However, in this method, since the temperatures of the freezer compartment and the refrigerating compartment change in conjunction, that is, when the refrigerant circulation amount increases, the temperatures of the freezer compartment and the refrigerating compartment both decrease, and when the refrigerant circulation amount decreases, the temperatures of both the freezer compartment and the refrigerating compartment increase. Only changes are made, limiting the range of temperature control. Therefore, in the conventional refrigerator, in order to vary the temperature control, a temperature sensor is installed in the freezer compartment and the refrigerating compartment, and the driving of the compressor, the driving of the freezing compartment and the blowing fan of the freezer compartment, and the like are controlled based on the detected temperature. However, this method has a problem that not only the control method is complicated but also requires a complicated structure.

따라서, 본 고안은, 냉동실 증발기 및 냉장실 증발기에 공급되는 냉매순환량을 조절하고, 냉장실 증발기 및 냉동실 증발기로 들어가는 냉매의 온도 및 압력을 다르게 하여 냉동실 및 냉장실의 온도를 효율적으로 조절할 수 있는 냉장고를 제공하는 것을 목적으로 한다.Therefore, the present invention provides a refrigerator which controls the refrigerant circulation amount supplied to the freezer compartment evaporator and the refrigerator compartment evaporator, and efficiently controls the temperature of the freezer compartment and the refrigerator compartment by varying the temperature and pressure of the refrigerant entering the refrigerator compartment evaporator and the freezer compartment evaporator. For the purpose of

도 1은 종래의 독립방식 냉장고의 측단면도,1 is a side cross-sectional view of a conventional independent refrigerator;

도 2는 도 1의 냉장고의 냉동사이클,2 is a refrigeration cycle of the refrigerator of FIG.

도 3은 본 고안의 제1실시예의 냉장고 냉동사이클,3 is a refrigerator refrigeration cycle of the first embodiment of the present invention,

도 4는 본 고안의 제2실시예의 냉장고 냉동사이클이다.4 is a refrigerator freezing cycle according to a second embodiment of the present invention.

상기 목적은, 본 고안에 따라, 냉동실 및 냉장실을 형성하는 캐비넷과, 압축기와, 상기 압축기로부터의 냉매를 응축하는 응축기를 갖는 냉장고에 있어서, 상기응축기와 상기 압축기 사이에서 분기 및 합류되어 상호 병렬로 연결된 냉동실 배관 및 냉장실 배관과, 상기 각 배관 내에 설치되어 상기 냉동실 및 상기 냉장실에 각각 부속되는 냉동실 증발기 및 냉장실 증발기와, 상기 각 배관내에 상기 각 증발기의 유입측에 설치되는 냉동실 증발기 유입측 팽창수단 및 냉장실 증발기 유입측 팽창수단을 포함하는 것을 특징으로 하는 냉장고에 의해 달성된다.The object of the present invention is a refrigerator having a cabinet for forming a freezing compartment and a refrigerating compartment, a compressor, and a condenser for condensing refrigerant from the compressor, wherein the condenser and the compressor are branched and joined to each other in parallel to each other. A connected freezer compartment pipe and a refrigerating compartment pipe, a freezer compartment evaporator and a refrigerating compartment evaporator installed in each of the pipes and attached to the freezer compartment and the refrigerating compartment, respectively, and a freezer compartment evaporator inlet expansion means installed in the inlet side of each evaporator in the respective pipes; It is achieved by a refrigerator comprising a refrigerating chamber evaporator inlet expansion means.

여기에서, 상기 양 증발기 중 적어도 어느 하나의 유출측에 유출측 팽창수단이 설치되어 있는 것이 바람직하다.Here, it is preferable that the outflow-side expansion means is provided on at least one outflow side of both evaporators.

또한, 상기 팽창수단들은 모세관을 사용할 수 있다.In addition, the expansion means may use a capillary tube.

이 때, 유입측 모세관은 상기 냉동실 증발기로 흐르는 냉매순환량이 상기 냉장실 증발기로 흐르는 냉매순환량보다 많도록 그 직경 및 길이가 결정되고, 상기 유출측 모세관의 직경 및 길이는 상기 냉동실 배관과 냉장실 배관의 합류점에서 각 배관의 압력이 동일하도록 결정되는 것이 바람직하다.At this time, the diameter and length of the inlet capillary is determined so that the amount of refrigerant circulating to the freezer compartment evaporator is greater than the amount of refrigerant circulating to the refrigerator compartment evaporator, and the diameter and length of the outlet side capillary tube are the confluence point of the freezer compartment pipe and the refrigerator compartment pipe. In this case, it is preferable that the pressure of each pipe is determined to be the same.

이하에서, 첨부도면을 참조하여 본 고안을 상세하게 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 3은 본 고안의 제1실시예의 냉장고 냉동사이클을 나타낸 블록도이다. 도 3에서 보는 바와 같이, 본 고안의 냉장고는 압축기(10) 및 응축기(20)를 가진다. 압축기(10)는 배관(70)에 의하여 응축기(20)에 연결되어 있다. 배관(70)은 응축기(20) 유출측 및 압축기(10) 유입측에도 연결되어 있으며, 냉장실 배관(80A)과 냉동실 배관(80B)은 상호 병렬 상태로 각각 배관(70)에 연결되어 있다. 냉장실 배관(80A) 및 냉동실 배관(80B)에는 각각 냉장실 증발기(40A) 및 냉동실 증발기(40B)가 설치되어 있다. 그리고, 냉장실 배관(80A) 및 냉동실 배관(80B)의각 증발기(40A, 40B)의 유입측에는 각 증발기로 들어오는 냉매를 팽창 정도를 조절할 수 있는 냉장실 유입측 전동팽창밸브(30A) 및 냉동실 유입측 전동팽창밸브(30B)가 각각 설치되어 있고, 각 증발기(40A, 40B)의 유출측에는 각 증발기에서 유출된 냉매를 팽창시키는 냉장실 유출측 전동팽창밸브(50A) 및 냉동실 유출측 전동팽창밸브(50B)가 각각 설치되어 있다.Figure 3 is a block diagram showing a refrigerator refrigeration cycle of the first embodiment of the present invention. As shown in Figure 3, the refrigerator of the present invention has a compressor 10 and a condenser 20. The compressor 10 is connected to the condenser 20 by a pipe 70. The pipe 70 is also connected to the condenser 20 outlet side and the compressor 10 inlet side, and the refrigerating chamber pipe 80A and the freezing chamber pipe 80B are connected to the pipe 70 in parallel with each other. The refrigerator compartment evaporator 40A and the freezer compartment evaporator 40B are respectively provided in the refrigerator compartment piping 80A and the freezer compartment piping 80B. The inlet side of each of the evaporators 40A and 40B of the refrigerating compartment piping 80A and the freezing compartment piping 80B has a refrigerating compartment inlet-side electric expansion valve 30A capable of adjusting the degree of expansion of the refrigerant entering each evaporator and a freezing compartment inlet-side electric expansion. The valve 30B is provided, respectively, and on the outlet side of each of the evaporators 40A and 40B, a refrigerator compartment outlet side electric expansion valve 50A and a freezer compartment outlet side electric expansion valve 50B for expanding the refrigerant flowing out of each evaporator are respectively. It is installed.

이러한 구성에 의하여, 압축기(10)에 의해 압축된 냉매는 응축기(20)에 의해 응축된다. 응축된 냉매는 배관(70)을 통하여 흐르고, 계속 냉장실 배관(80A) 및 냉동실 배관(80B)으로 분기되어 흐른다. 이 때, 냉매의 분기량은 냉장실 전동팽창밸브(30A) 및 냉동실 전동팽창밸브(30B)의 조절에 따라 달라진다. 냉매는 냉장실 배관(80A) 및 냉동실 배관(80B)에 설치된 각 전동팽창밸브(30A, 30B)에서 팽창되어, 각 증발기(40A, 40B)로 들어간다. 이 때, 각 증발기로 들어가는 냉매의 온도 및 압력은 전동팽창밸브에서의 팽창 정도에 따라 다르게 된다. 각 증발기에서 열교환된 후 냉매는 냉장실 유출측 전동팽창밸브(50A) 및 냉동실 유출측 전동팽창밸브(50B)를 거치면서 다시 팽창한다. 이 때, 각 유출측 전동팽창밸브(50A, 50B)는 냉장실 배관(80A)과 냉동실 배관(80B)의 합치점에서 냉매의 압력이 같아지도록 조절된다. 팽창하여 압력이 같아진 냉장실 배관(80A) 및 냉동실 배관(80B)의 냉매는 합쳐져서 압축기로 돌아와 하나의 사이클을 형성한다.By this configuration, the refrigerant compressed by the compressor 10 is condensed by the condenser 20. The condensed refrigerant flows through the pipe 70 and continues to branch to the refrigerating chamber pipe 80A and the freezing chamber pipe 80B. At this time, the branching amount of the refrigerant varies depending on the control of the refrigerating compartment motor expansion valve 30A and the freezing compartment motor expansion valve 30B. The refrigerant is expanded in each of the electric expansion valves 30A and 30B provided in the refrigerating chamber piping 80A and the freezing chamber piping 80B, and enters the respective evaporators 40A and 40B. At this time, the temperature and pressure of the refrigerant entering each evaporator are different depending on the degree of expansion in the electric expansion valve. After the heat exchange in each evaporator, the refrigerant expands again while passing through the refrigerating chamber outlet side electric expansion valve 50A and the freezer compartment outlet side electric expansion valve 50B. At this time, each of the outlet-side electric expansion valves 50A and 50B is adjusted so that the pressure of the refrigerant is equal at the matching point between the refrigerating chamber piping 80A and the freezing chamber piping 80B. The refrigerant in the refrigerating compartment pipe 80A and the freezing compartment pipe 80B, which are expanded by the same pressure, is combined to return to the compressor to form a cycle.

따라서, 본 고안은 전동팽창밸브에 의하여 간단하게 냉장실 증발기 및 냉동실 증발기에 냉매분배량을 조절할 수 있게 된다. 또한, 전동팽창밸브에 의하여 냉장실 증발기 및 냉동실 증발기로 들어가는 냉매의 온도 및 압력을 다르게 하여 냉장실 및 냉동실의 온도를 효율적으로 제어할 수 있다.Therefore, the present invention can simply adjust the refrigerant distribution amount in the refrigerator compartment evaporator and the freezer compartment evaporator by the electric expansion valve. In addition, the temperature of the refrigerator compartment and the freezer compartment can be efficiently controlled by varying the temperature and pressure of the refrigerant entering the refrigerator compartment evaporator and the freezer compartment evaporator by the electric expansion valve.

도 4는 본 고안의 제2실시예의 냉장고 냉동사이클의 블록도를 나타낸 것이다. 도 4로 표현된 제2실시예는 도 3으로 표현된 제1실시예에서, 전동팽창밸브 대신에 모세관(31A, 31B, 51A, 51B)을 사용한 것을 제외하면 동일하다. 도 4에서 보는 바와 같이, 제2실시예는 모세관을 사용하므로, 냉매의 분배비가 일정하지만, 냉장실 증발기 및 냉동실 증발기로 들어가는 냉매의 온도 및 압력을 다르게 함으로써 냉장실 및 냉동실의 온도 제어를 효율적으로 할 수 있다. 여기에서, 모세관은 냉장실 증발기 보다 냉동실 증발기에 많은 냉매가 분배되도록 그 직경 및 길이가 결정된다.Figure 4 shows a block diagram of a refrigerator refrigeration cycle of the second embodiment of the present invention. The second embodiment represented by FIG. 4 is the same as in the first embodiment represented by FIG. 3 except that capillaries 31A, 31B, 51A and 51B are used instead of the electric expansion valve. As shown in FIG. 4, since the second embodiment uses a capillary tube, the distribution ratio of the refrigerant is constant, but the temperature control and the pressure of the refrigerant entering the refrigerator compartment evaporator and the freezer compartment evaporator can be controlled efficiently in the refrigerator compartment and the freezer compartment. have. Here, the capillary is diameter and length determined so that more refrigerant is distributed to the freezer compartment evaporator than to the refrigerator compartment evaporator.

이상에서 살펴 본 바와 같이, 본 고안은 냉장실 증발기와 냉동실 증발기를 병렬로 연결하고, 각 증발기의 유입측에 냉매팽창수단을 배치함으로써, 간단한 구조에 의하여 간단한 방식으로 냉동실 증발기 및 냉장실 증발기에 공급되는 냉매순환량을 조절하고 냉장실 증발기 및 냉동실 증발기로 들어가는 냉매의 온도 및 압력을 다르게 하여 냉동실 및 냉장실의 온도를 효율적으로 조절할 수 있도록 한다.As described above, the present invention is connected to the refrigerator compartment evaporator and the freezer compartment evaporator in parallel, and by arranging the refrigerant expansion means on the inlet side of each evaporator, the refrigerant supplied to the freezer compartment evaporator and the refrigerator compartment evaporator in a simple manner by a simple structure. By controlling the circulation amount and by varying the temperature and pressure of the refrigerant entering the refrigerator evaporator and the freezer compartment evaporator, it is possible to efficiently control the temperature of the freezer compartment and the refrigerator compartment.

Claims (1)

냉동실 및 냉장실을 형성하는 캐비넷과 압축기와, 상기 압축기로부터의 냉매를 응축하는 응축기를 갖는 냉장고에 있어서,A refrigerator having a cabinet and a compressor forming a freezing compartment and a refrigerating compartment, and a condenser condensing the refrigerant from the compressor, 상기 응축기와 압축기 사이에서 분기 및 합류되어 상호 병렬연결된 냉동실 배관 및 냉장실 배관과;A freezer compartment pipe and a refrigerator compartment pipe which are branched and joined between the condenser and the compressor and connected in parallel with each other; 상기 각 배관내에 설치되어 상기 냉동실 및 상기 냉장실에 각각 부속되는 냉동실 증발기 및 냉장실 증발기와;A freezer compartment evaporator and a refrigerator compartment evaporator installed in each of the pipes and attached to the freezer compartment and the refrigerating compartment, respectively; 상기 각 증발기의 유입측 및 유출측에 각각 설치되며, 유입측에는 그 직경 및 길이가 냉동실 증발기로 흐르는 냉매순환량이 냉장실 증발기로 흐르는 냉매순환량보다 많도록 결정되고, 유출측에는 그 직경 및 길이가 냉동실 배관과 냉장실 배관의 합류점에서 각 배관의 압력이 동일하도록 결정되는 유입측 모세관 및 유출측 모세관을 포함하는 것을 특징으로 하는 냉장고.It is installed at the inlet and outlet sides of each evaporator, the diameter and length of the respective evaporator is determined so that the refrigerant circulation flows to the freezer compartment evaporator is greater than the refrigerant circulation flow to the refrigerator compartment evaporator, the diameter and length of the evaporator is the freezer compartment pipe and A refrigerator comprising: an inlet capillary and an outlet capillary tube at which the pressures of the respective pipes are determined to be equal at the confluence point of the refrigerating compartment piping.
KR2019980013373U 1998-07-21 1998-07-21 Refrigerator KR200308189Y1 (en)

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