KR20020044314A - Refrigerant expansion device for refrigerating cycle - Google Patents

Refrigerant expansion device for refrigerating cycle Download PDF

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Publication number
KR20020044314A
KR20020044314A KR1020000073342A KR20000073342A KR20020044314A KR 20020044314 A KR20020044314 A KR 20020044314A KR 1020000073342 A KR1020000073342 A KR 1020000073342A KR 20000073342 A KR20000073342 A KR 20000073342A KR 20020044314 A KR20020044314 A KR 20020044314A
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KR
South Korea
Prior art keywords
refrigerant
moving member
expansion device
refrigerant expansion
refrigeration cycle
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KR1020000073342A
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Korean (ko)
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KR100375096B1 (en
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구형모
최원석
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윤종용
삼성전자 주식회사
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Priority to KR10-2000-0073342A priority Critical patent/KR100375096B1/en
Publication of KR20020044314A publication Critical patent/KR20020044314A/en
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Publication of KR100375096B1 publication Critical patent/KR100375096B1/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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/38—Fan details of outdoor units, e.g. bell-mouth shaped inlets or fan mountings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/46—Component arrangements in separate outdoor units
    • F24F1/48—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: A device for expanding refrigerant for freezing cycle is provided to be capable of changing decompression capacity and to simplify the constitution thereof. CONSTITUTION: A device(300) includes an inlet chamber(310) which refrigerant inflows; a discharge chamber(320) through which refrigerant is discharged; a coupler(330) of which one end connected with the inlet chamber and the other end connected with the discharge chamber and includes a connecting passage(350) therein to fluidically connect the inlet chamber and the discharge chamber; a moving member(340) placed in the coupler to be movable back and forth to form a decompression passage(360) with an inner circumference of the connecting passage; and a driving device driving the moving member as a driving motor(380).

Description

냉동사이클용 냉매팽창장치{Refrigerant expansion device for refrigerating cycle}Refrigerant expansion device for refrigerating cycle

본 발명은 냉매팽창장치에 관한 것으로, 더욱 상세하게는 감압유로를 가변시킬 수 있는 냉매팽창장치에 관한 것이다.The present invention relates to a refrigerant expansion device, and more particularly, to a refrigerant expansion device capable of varying a reduced pressure flow path.

일반적으로 냉동사이클은 냉매를 매개로 압축, 응축, 팽창, 증발의 4단계를 수행하도록 이루어져 냉장고, 공기조화기 등에 적용된다.In general, the refrigeration cycle is configured to perform four steps of compression, condensation, expansion, and evaporation through a refrigerant and is applied to a refrigerator and an air conditioner.

이러한 냉동사이클에서 냉매팽창장치는 압축기와 응축기를 지난 고압상태의 냉매를 증발이 용이하게 이루어질 수 있는 적정압력으로 감압시키는 장치로서, 모세관이나 전자팽창밸브가 주로 사용된다.In such a refrigeration cycle, the refrigerant expansion device is a device for reducing the refrigerant at a high pressure in the high pressure state past the compressor and the condenser to an appropriate pressure that can be easily evaporated, and a capillary tube or an electronic expansion valve is mainly used.

그러나, 모세관은 모세관의 길이 및 구경에 따라 일정한 감압능력을 갖게되므로, 적용되는 냉동사이클의 용량에 따라 다양한 길이 및 구경으로 각각의 모세관을 별도로 가공해야 하며, 일단 설치한 후에는 모세관을 감압능력을 변경시킬 수 없다는 문제점이 있다.However, since the capillary tube has a constant decompression capacity depending on the length and diameter of the capillary tube, each capillary tube must be processed separately in various lengths and diameters according to the capacity of the refrigeration cycle applied. There is a problem that can not be changed.

한편, 전자팽창밸브는 감압능력을 가변할 수 있는 냉매팽창장치이다.On the other hand, the electromagnetic expansion valve is a refrigerant expansion device that can vary the decompression capacity.

그러나, 이러한 전자팽창밸브는 코일, 플런저, 복원스프링, 전원입력단자 및 실링수단 등의 다수개의 부품이 내부 유로를 개폐할 수 있도록 복잡하게 설치되어 있으므로, 이를 구동시키게 되면 부품들이 서로 부딪치며 소음을 발생시키게 되며, 제조과정이 복잡해 제조원가가 높다는 문제점이 있다.However, such an electromagnetic expansion valve is complicatedly installed so that a plurality of components such as coils, plungers, restoring springs, power input terminals and sealing means can be opened and closed, and when driven, the components collide with each other and generate noise. There is a problem that the manufacturing process is complicated and the manufacturing cost is high.

또한 일정한 감압능력을 갖기 위해서는 각 부품들이 정확한 위치에 놓여져야 하는데, 각 부품의 공차에 의하여 작동오차가 발생하여 일정한 성능을 유지하기 힘들다는 문제점이 있다.In addition, in order to have a constant decompression capacity, each part must be placed in the correct position, there is a problem that it is difficult to maintain a constant performance due to the operation error caused by the tolerance of each part.

본 발명은 이러한 문제점을 해결하기 위한 것으로, 본 발명의 목적은 감압능력의 가변이 가능하면서도, 구성이 간단한 냉매팽창장치를 제공하고자 하는 것이다.The present invention is to solve this problem, it is an object of the present invention to provide a refrigerant expansion device that is simple in configuration, while being able to vary the decompression capacity.

도 1은 본 발명이 적용되는 냉동 사이클을 보인 개략도이다.1 is a schematic view showing a refrigeration cycle to which the present invention is applied.

도 2는 본 발명에 따른 냉매팽창장치의 내부구조를 보인 단면도이다.2 is a cross-sectional view showing the internal structure of the refrigerant expansion device according to the present invention.

도 3은 본 발명에 따른 냉매팽창장치의 연결장치 구조를 보인 개략도이다.3 is a schematic view showing the structure of the connecting device of the refrigerant expansion device according to the present invention.

도 4는 본 발명에 따른 냉매팽창장치의 작동상태를 보인 것이다.Figure 4 shows the operating state of the refrigerant expansion device according to the present invention.

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

100: 압축기 200: 응축기100: compressor 200: condenser

300: 냉매팽창장치310: 유입쳄버300: refrigerant expansion device 310: inlet chamber

320: 토출쳄버330: 연결부재320: discharge chamber 330: connecting member

340: 이동부재350: 연통유로340: moving member 350: communication flow path

360: 감압유로370: 연결장치360: decompression flow path 370: connecting device

380: 구동모터380: drive motor

이와 같은 목적을 달성하기 위한 본 발명은;The present invention for achieving the above object;

냉매팽창장치에 있어서,In the refrigerant expansion device,

냉매가 유입되는 유입쳄버와; 냉매가 토출되는 토출쳄버와; 일단은 상기 유입쳄버와, 타단은 상기 토출쳄버와 연결되며 내부에 이들을 연통시키는 연통유로가 형성된 연결부재와; 상기 연결부재내에 진퇴운동 가능하게 배치되며 상기 연통유로 내주와의 사이에 감압유로를 형성하기 위한 이동부재와; 상기 이동부재를 구동시키는 구동수단을 구비하는 것을 특징으로 한다.An inlet chamber into which refrigerant is introduced; A discharge chamber through which the refrigerant is discharged; A connecting member having one end connected to the inlet chamber and the other end connected to the discharge chamber and having a communication flow path communicating therein; A moving member disposed in the connecting member so as to move forward and backward and for forming a decompression passage between the communication passage and the inner circumference; And driving means for driving the moving member.

또한, 상기 연결부재의 내주에는 암나사가 마련되며, 상기 이동부재는 상기 암나사와 이물림되며 이들 사이에 상기 감압유로를 형성하도록 수나사가 마련된 나선축으로 이루어진 것을 특징으로 한다.In addition, a female screw is provided on the inner circumference of the connecting member, and the movable member is formed of a spiral shaft provided with a male screw to form a decompression flow path between the female screw and the female screw.

또한, 상기 구동수단은 정역 회전 가능한 구동모터를 구비하며, 상기 이동부재와 상기 구동모터의 회전축 사이에는 상기 이동부재의 축방향 이동을 가능하게 하는 연결장치가 마련된 것을 특징으로 한다.In addition, the drive means is provided with a drive motor that can be rotated forward and backward, characterized in that the connecting device for enabling the axial movement of the moving member between the moving member and the rotation axis of the drive motor is provided.

또한, 상기 연결장치는, 상기 이동부재와 상기 구동모터의 회전축 중 어느 하나에 축방향으로 연장된 다각형상의 제 1 연결축과, 다른 하나에 상기 제 1 연결축이 슬라이딩 가능하게 삽입되도록 삽입홈을 갖는 제 2 연결축을 포함하는 것을 특징으로 한다.In addition, the connecting device, the first connecting shaft of the polygonal extending in the axial direction to any one of the rotation axis of the movable member and the drive motor, and the insertion groove so that the first connecting shaft is slidably inserted into the other. It characterized in that it comprises a second connecting shaft having.

이하에서는 본 발명에 따른 하나의 실시 예를 도면을 참조하여 상세히 설명한다.Hereinafter, one embodiment according to the present invention will be described in detail with reference to the drawings.

본 발명이 적용되는 냉동사이클은 도 1에 도시한 바와 같이, 전동기를 가동하여 냉매를 고압으로 압축시키는 압축기(100)와, 압축기(100)에서 토출된 냉매로를 응축시키는 응축기(200)와, 응축기를 지난 고압의 냉매를 적정압력으로 만드는 냉매팽창장치(300)와, 냉매팽창장치(300)에 의해 감압된 냉매를 증발시키며 열교환이 이루어지는 증발기(400)를 구비한다.As shown in FIG. 1, the refrigerating cycle to which the present invention is applied includes a compressor 100 for operating a motor to compress the refrigerant to a high pressure, a condenser 200 for condensing the refrigerant passage discharged from the compressor 100, And a refrigerant expansion device (300) for making the high pressure refrigerant past the condenser at an appropriate pressure, and an evaporator (400) for evaporating the refrigerant reduced in pressure by the refrigerant expansion device (300).

이러한 냉동사이클에 적용되는 냉매팽창장치(300)는 응축기(200)와 증발기(400) 사이에 냉매관을 통해 연계되게 설치된다. 따라서, 응축기(200)로부터 전해진 고압의 냉매를 적정압으로 감압시킨 후 증발기(400)로 전달함으로써 증발기(400)에서 냉매의 증발이 용이하게 이루어지도록 하는 역할을 수행한다.The refrigerant expansion device 300 applied to the refrigeration cycle is installed to be connected through the refrigerant pipe between the condenser 200 and the evaporator 400. Therefore, the refrigerant of the high pressure transmitted from the condenser 200 is reduced to an appropriate pressure and then transferred to the evaporator 400 to facilitate the evaporation of the refrigerant in the evaporator 400.

이러한 냉매팽창장치(300)는 도 2에 도시한 바와 같이, 냉매가 유입되어 들어오는 유입쳄버(310)와, 냉매가 토출되는 토출쳄버(320)와, 유입쳄버(310)와 토출쳄버(320)를 내부에 마련된 연통유로(350)를 통해 연결하는 연결부재(330)와, 연결부재(330) 내에 이동가능하게 설치되는 이동부재(340)와, 이동부재를 구동시키기 위한 구동수단을 갖추고 있다.As shown in FIG. 2, the refrigerant expansion device 300 includes an inflow chamber 310 into which a refrigerant flows in, a discharge chamber 320 in which the refrigerant is discharged, an inflow chamber 310, and a discharge chamber 320. It is provided with a connecting member 330 for connecting through the communication flow path 350 provided therein, a moving member 340 installed to be movable in the connecting member 330, and a driving means for driving the moving member.

유입쳄버(310)에는 응축기(200)에 의하여 응축된 고압의 냉매가 유입되는 유입관(311)이 설치되며, 토출쳄버(320)에는 연결부재(330)에 의하여 감압된 냉매가 토출되도록 토출관(321)이 설치된다.The inlet tube 310 is provided with an inlet tube 311 into which the high pressure refrigerant condensed by the condenser 200 is introduced, and the discharge chamber 320 is discharged to discharge the refrigerant decompressed by the connecting member 330. 321 is installed.

연결부재(330)와 이동부재(340) 사이에는 냉매의 압력을 감소시키는 감압유로(360)가 마련되는데, 이러한 감압유로(360)는 연결부재(330)와 이동부재(340)가 서로 맞물려 있는 구간에서만 냉매를 감압시킬 수 있도록 구성되는데, 이에 대한 상세한 구조는 다음과 같다.Between the connecting member 330 and the moving member 340 is provided with a pressure reducing passage 360 for reducing the pressure of the refrigerant, the pressure reducing passage 360 is the connection member 330 and the moving member 340 is engaged with each other The refrigerant can be reduced in only the section, the detailed structure thereof is as follows.

먼저, 연결부재(330)는 일단이 유입쳄버(310)와, 타단이 토출쳄버(320)와 직접 결합되며, 이들을 연통시키기 위해 내부에는 중공의 연통유로(350)가 형성되어 있다. 또한, 연통유로(350)의 내주에는 이동부재(340)의 축방향 이동을 안내하기 위한 암나사(331)가 가공된다.First, one end of the connection member 330 is directly coupled to the inlet chamber 310 and the other end to the discharge chamber 320, and a hollow communication passage 350 is formed therein for communicating them. In addition, an internal thread 331 for processing the axial movement of the moving member 340 is processed on the inner circumference of the communication flow path 350.

이동부재(340)에는 외주에 수나사(341)가 마련되어 연결부재(330)와 이물림결합되며, 이것에 의해 이동부재(340)가 정회전 또는 역회전하면 암나사(331)를 따라 진퇴운동하게 된다. 또한, 이동부재(340)의 수나사(341)는 연결부재(330)에 헐겁게 결합되도록 구성하는 것이 바람직하다. 이에 따라 암나사(331)와 수나사(341)가 이물림 되었을 때, 이들 사이가 소정간격 이격되며, 이러한 이격된 틈을 따라 나선형 감압유로(360)가 형성된다.The moving member 340 is provided with an external thread 341 on the outer circumference thereof and is engaged with the connecting member 330, whereby the moving member 340 moves forward or backward along the female screw 331. . In addition, the male screw 341 of the moving member 340 is preferably configured to be loosely coupled to the connecting member 330. Accordingly, when the female screw 331 and the male screw 341 are separated, a predetermined interval is spaced therebetween, and a spiral pressure reducing flow path 360 is formed along the spaced gap.

그리고 구동수단은 정역회전이 가능한 구동모터(380)로 이루어져 있는데, 이동부재(340)를 회전시키기 위해 이동부재(340)의 단부와 구동모터(380)의 회전축은 연결장치(370)를 매개로 연결되어 있다.And the drive means is composed of a drive motor 380 capable of forward and reverse rotation, the end of the moving member 340 and the rotating shaft of the drive motor 380 to rotate the moving member 340 via the connection device 370 It is connected.

도 2와 도 3을 참조하면, 이 연결장치(370)는 축 길이가 가변될 수 있도록 제 1 연결축(371)과 제 2 연결축(372)으로 이루어져 있다. 제 1 연결축(371)은 사각축으로 구성되어 구동모터(380)의 회전축에 일체로 마련되며, 제 2 연결축(372)은 이동부재(340)에 축방향으로 연장되며 제 1 연결축(371)이 슬라이딩 가능하게삽입될 수 있도록 사각형상의 삽입홈(372a)이 마련되어 있다. 이에 따라 제 1 연결축(371)이 제 2 연결축(372)의 삽입홈(372a)으로 끼워져 결합되어 이동부재(340)의 축방향 이동이 가능하게 된다. 이러한 연결장치(370)에 있어서, 삽입홈(372a)은 제 1 연결축(371)이 여유있게 결합되도록 구성하여 축방향으로 상대운동이 용이하게 이루어지도록 하는 것이 바람직하다.2 and 3, the connecting device 370 includes a first connecting shaft 371 and a second connecting shaft 372 so that the shaft length can be varied. The first connecting shaft 371 is composed of a square shaft is provided integrally to the rotating shaft of the drive motor 380, the second connecting shaft 372 extends in the axial direction to the moving member 340 and the first connecting shaft ( A rectangular insertion groove 372a is provided so that the 371 can be slidably inserted. Accordingly, the first connecting shaft 371 is fitted into the insertion groove 372a of the second connecting shaft 372 to be coupled to the axial movement of the movable member 340. In the connection device 370, the insertion groove 372a is preferably configured to allow the first connection shaft 371 to be coupled to the margin to facilitate relative movement in the axial direction.

다음에는 이와 같이 구성된 본 발명에 따른 냉매팽창장치의 작용 및 효과를 설명한다.Next, the operation and effects of the refrigerant expansion device according to the present invention configured as described above will be described.

본 발명에 따른 냉각사이클용 냉매팽창장치(300)는 이동부재(340)가 연결부재(330)내에 완전히 삽입되어 있는 경우, 암나사(331)와 수나사(341)의 이물림 길이가 최대가 된다. (이 때에는 감압유로의 길이가 최대가 되어 감압능력이 가장 높다.)In the refrigerant expansion device 300 for a cooling cycle according to the present invention, when the moving member 340 is completely inserted into the connection member 330, the bite length of the female screw 331 and the male screw 341 is maximized. (At this time, the length of the decompression flow path is the maximum, and the decompression capacity is the highest.)

이러한 상태에서 구동모터(380)를 정방향으로 구동, 이동부재(340)를 정방향 회전시키면, 이동부재(340)는 도 4에 도시된 바와 같이 축방향으로 소정거리(A 구간) 이동하여 선단이 토출쳄버(320)내에 위치된다. 이 때, 제 1 연결축(371)은 이동부재(340)의 이동에 따라 제 2 연결축(372)의 삽입홈(372a)으로부터 점차 빠져나오면서 이동부재(340)의 이동거리를 보상한다.In this state, when the driving motor 380 is driven in the forward direction and the moving member 340 is rotated in the forward direction, the moving member 340 moves in the axial direction by a predetermined distance (section A) as shown in FIG. It is located in the chamber 320. At this time, the first connecting shaft 371 gradually compensates from the insertion groove 372a of the second connecting shaft 372 as the moving member 340 moves to compensate for the moving distance of the moving member 340.

이러한 이동부재(340)의 이동에 따라 연결부재(330)와 이동부재(340)가 이물림되어 있는 구간의 길이(B 구간)는 그만큼 짧아진다.As the moving member 340 moves, the length (section B) of the section in which the connecting member 330 and the moving member 340 are bitten becomes shorter.

감압은 연결부재(330)와 이동부재(340)가 맞물려 모세관 형상을 이룰 때 모세관 내벽과 냉매의 마찰력에 의해 이루어지는데, A 구간의 감압유로는 이동에 따라 모세관 형상을 잃어버리게 되어 감압능력을 상실하며, C 구간의 감압유로 역시 모세관 형상을 잃어버리게 되어 감압능력을 상실한다.Decompression is achieved by the frictional force between the inner wall of the capillary and the refrigerant when the connecting member 330 and the moving member 340 form a capillary shape, and the decompression flow path in the A section loses the capillary shape as the capillary tube moves. In addition, the decompression flow path of the C section also loses the capillary shape and loses the decompression capacity.

결과적으로 감압유로(360)는 연결부재(330)와 이동부재(340)가 맞물려 있는 B 구간에서만 유지되므로 이동 전에 비하여 전체 감압유로(360)의 길이는 짧아지며, 이러한 감압유로(360)의 길이변화는 곧 냉매팽창장치(300)의 용량 변화로 이어진다.As a result, since the decompression passage 360 is maintained only in the section B in which the connecting member 330 and the moving member 340 are engaged, the length of the decompression passage 360 is shorter than before the movement, and the length of the decompression passage 360 is reduced. The change immediately leads to a change in capacity of the refrigerant expansion device 300.

반면에, 구동모터(380)를 역방향으로 회전시키면, 제 1 연결축(371)이 제 2 연결축(372)의 삽입홈(372a) 내로 들어가면서, 토출쳄버(320)로 돌출되었던 이동부재(340)의 선단이 연결부재(330)의 내로 복원된다.On the other hand, when the driving motor 380 is rotated in the reverse direction, the first connecting shaft 371 is moved into the insertion groove 372a of the second connecting shaft 372, the moving member 340 protruding to the discharge chamber 320 ) Is restored to the inside of the connection member 330.

따라서, 연결부재(330)와 이동부재(340)의 이물림된 구간의 길이를 조정함으로써, 냉매팽창장치(300)의 감압능력을 손쉽게 변화시킬 수 있다.Therefore, by adjusting the lengths of the separated portions of the connecting member 330 and the moving member 340, it is possible to easily change the decompression capacity of the refrigerant expansion device 300.

또한, 구동모터(380) 등의 구동수단이 연결장치(370)를 통하여 이동부재(340)와 연결되어 있으므로, 구동모터(380)를 제어하여 냉매팽창장치(300)의 감압능력을 조정할 수 있다.In addition, since the driving means such as the driving motor 380 is connected to the moving member 340 through the connecting device 370, the pressure reduction capacity of the refrigerant expansion device 300 can be adjusted by controlling the driving motor 380. .

이상에서 상세히 설명한 바와 같이, 본 발명에 따른 냉동사이클용 냉매팽창장치에 의하면, 이동부재를 이동시켜 연결부재와 이동부재가 맞물려 있는 구간의 길이를 조정함으로써, 냉매팽창장치의 감압능력을 가변시킬 수 있게 되는 작용효과가 있다. 또한, 간단한 구성으로 이루어져 있어 제조원가가 절감되며, 소음발생이 적은 냉매팽창장치를 제공할 수 있다는 효과가 있다. 또한 동일한 부품을 다양한용량의 냉동사이클에 사용할 수 있으므로 부품의 공용화가 가능하다는 부수적인 효과가 있으며, 아울러 구동부가 적어 일정한 성능의 유지가 용이하다는 작용효과가 있다.As described in detail above, according to the refrigerant expansion device for a refrigeration cycle according to the present invention, by adjusting the length of the section in which the connecting member and the moving member is engaged by moving the moving member, the decompression capacity of the refrigerant expansion device can be varied. There is a working effect. In addition, it is made of a simple configuration to reduce the manufacturing cost, there is an effect that can provide a refrigerant expansion device with less noise. In addition, since the same parts can be used in refrigeration cycles of various capacities, there is a side effect that the parts can be used in common, and there is also a small driving part, and thus there is an effect of easy maintenance of constant performance.

Claims (4)

냉매팽창장치에 있어서,In the refrigerant expansion device, 냉매가 유입되는 유입쳄버와;An inlet chamber into which refrigerant is introduced; 냉매가 토출되는 토출쳄버와;A discharge chamber through which the refrigerant is discharged; 일단은 상기 유입쳄버와, 타단은 상기 토출쳄버와 연결되며 내부에 이들을 연통시키는 연통유로가 형성된 연결부재와;A connecting member having one end connected to the inlet chamber and the other end connected to the discharge chamber and having a communication flow path communicating therein; 상기 연결부재내에 진퇴운동 가능하게 배치되며 상기 연통유로 내주와의 사이에 감압유로를 형성하기 위한 이동부재와;A moving member disposed in the connecting member so as to move forward and backward and for forming a decompression passage between the communication passage and the inner circumference; 상기 이동부재를 구동시키는 구동수단을 구비하는 것을 특징으로 하는 냉동사이클용 냉매팽창장치.Refrigerant expansion device for a refrigeration cycle characterized in that it comprises a drive means for driving the moving member. 제 1항에 있어서,The method of claim 1, 상기 연결부재의 내주에는 암나사가 마련되며,A female screw is provided on the inner circumference of the connecting member, 상기 이동부재는 상기 암나사와 이물림되며 이들 사이에 상기 감압유로를 형성하도록 수나사가 마련된 나선축으로 이루어진 것을 특징으로 하는 냉동사이클용 냉매팽창장치.The movable member is a refrigerant expansion device for a refrigeration cycle, characterized in that the screw thread is separated from the female screw and a spiral shaft provided with a male screw to form the decompression passage therebetween. 제 2항에 있어서,The method of claim 2, 상기 구동수단은 정역 회전 가능한 구동모터를 구비하며,The drive means has a drive motor capable of forward and reverse rotation, 상기 이동부재와 상기 구동모터의 회전축 사이에는 상기 이동부재의 축방향 이동을 가능하게 하는 연결장치가 마련된 것을 특징으로 하는 냉동사이클용 냉매팽창장치.A refrigerant expansion device for a refrigeration cycle, characterized in that a coupling device is provided between the moving member and the rotating shaft of the drive motor to enable the axial movement of the moving member. 제 3항에 있어서,The method of claim 3, wherein 상기 연결장치는,The connecting device, 상기 이동부재와 상기 구동모터의 회전축 중 어느 하나에 축방향으로 연장된 다각형상의 제 1 연결축과, 다른 하나에 상기 제 1 연결축이 슬라이딩 가능하게 삽입되도록 삽입홈을 갖는 제 2 연결축을 포함하는 것을 특징으로 하는 냉동사이클용 냉매팽창장치.And a first connecting shaft having a polygonal shape extending in an axial direction to one of the rotating shafts of the moving member and the driving motor, and a second connecting shaft having an insertion groove so that the first connecting shaft is slidably inserted into the other. Refrigerant expansion device for a refrigeration cycle, characterized in that.
KR10-2000-0073342A 2000-12-05 2000-12-05 Refrigerant expansion device for refrigerating cycle KR100375096B1 (en)

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