KR100348485B1 - Expand valve with unit temperature sensing unit - Google Patents

Expand valve with unit temperature sensing unit Download PDF

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Publication number
KR100348485B1
KR100348485B1 KR1019990062691A KR19990062691A KR100348485B1 KR 100348485 B1 KR100348485 B1 KR 100348485B1 KR 1019990062691 A KR1019990062691 A KR 1019990062691A KR 19990062691 A KR19990062691 A KR 19990062691A KR 100348485 B1 KR100348485 B1 KR 100348485B1
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KR
South Korea
Prior art keywords
temperature sensing
expansion valve
sensing unit
diaphragm
refrigerant
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KR1019990062691A
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Korean (ko)
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KR20010058436A (en
Inventor
박봉수
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만도공조 주식회사
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Priority to KR1019990062691A priority Critical patent/KR100348485B1/en
Publication of KR20010058436A publication Critical patent/KR20010058436A/en
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Publication of KR100348485B1 publication Critical patent/KR100348485B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00485—Valves for air-conditioning devices, e.g. thermostatic valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
    • B60H1/00807—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models the input being a specific way of measuring or calculating an air or coolant temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3205—Control means therefor
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H2001/3236—Cooling devices information from a variable is obtained
    • B60H2001/3248—Cooling devices information from a variable is obtained related to pressure
    • B60H2001/3254—Cooling devices information from a variable is obtained related to pressure of the refrigerant at an expansion unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H2001/3236—Cooling devices information from a variable is obtained
    • B60H2001/3255—Cooling devices information from a variable is obtained related to temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H2001/3269—Cooling devices output of a control signal
    • B60H2001/3285—Cooling devices output of a control signal related to an expansion unit
    • 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
    • F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
    • F25B2341/06—Details of flow restrictors or expansion valves
    • F25B2341/068—Expansion valves combined with a sensor
    • F25B2341/0683—Expansion valves combined with a sensor the sensor is disposed in the suction line and influenced by the temperature or the pressure of the suction gas

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Temperature-Responsive Valves (AREA)

Abstract

본 발명은 차량 등에 설치되어 차량의 실내를 냉방시키도록 한 열교환기에 있어서, 이 열교환기의 냉방작용시 발생하는 냉매의 열을 감지하고 이 감지된 열에 따라 팽창작용을 하면서 냉매의 흐름을 제어하도록 함에 있어서, 상기 온도감지 기능을 가진 팽창밸브의 온도감지 유닛을 용이하게 설치할 수 있도록 하고 상기 팽창밸브의 사양이 달라지더라도 상기 온도감지 유닛을 용이하게 교체하여 설치할 수 있도록 한 온도감지 유닛을 가진 팽창밸브에 관한 것이다.The present invention provides a heat exchanger installed in a vehicle to cool an interior of a vehicle, wherein the heat exchanger detects heat generated during cooling of the heat exchanger and controls the flow of the refrigerant while inflating according to the detected heat. An expansion valve having a temperature sensing unit for easily installing a temperature sensing unit of an expansion valve having a temperature sensing function and easily replacing and installing the temperature sensing unit even if the specification of the expansion valve is changed. It is about.

본 발명은 내부 상하측에 냉매통로(2)(3)가 형성된 팽창밸브 본체(1)와, 상기 본체(1)의 상단측에 설치되는 흡인부(8)와, 상기 흡인부(8)와 연결되어 외부의 온도를 감지하는 온도감지 유닛(7)과, 상기 온도감지 유닛(7)과 냉매의 압력에 의해 승강하도록 상기 흡인부(8)의 하단측엔 설치된 다이아프램(4)과, 상기 다이아프램(4)과 연동되어 상기 통로(3)를 개폐하도록 마련된 밸브(6)를 구비한 팽창밸브에 있어서, 상기 팽창밸브의 본체(1) 상단부를 개방하여 형성된 삽입부(9)와, 상기 삽입부(9)에 삽탈가능하도록 상기 흡입부에서 연장 형성된 삽입편(10)과, 상기 삽입편(10)과 다이아프램(4)의 사이에 설치되는 박판(11)이 구비되는 구성이다.The present invention provides an expansion valve body (1) having a refrigerant passage (2) (3) formed on the upper and lower sides thereof, a suction part (8) provided at an upper end side of the main body (1), and the suction part (8); A temperature sensing unit 7 connected to sense an external temperature, a diaphragm 4 installed at a lower end side of the suction unit 8 to move up and down by the pressure of the temperature sensing unit 7 and the refrigerant; An expansion valve having a valve (6) interlocked with a diaphragm (4) to open and close the passage (3), comprising: an insertion portion (9) formed by opening an upper end of a main body (1) of the expansion valve; The insertion piece 10 extending from the suction part so that the insertion part 9 can be inserted into and detached from the suction part 9, and the thin plate 11 provided between the insertion piece 10 and the diaphragm 4 are provided.

Description

온도감지 유닛을 가진 팽창밸브 {Expand valve with unit temperature sensing unit}Expansion valve with unit temperature sensing unit

본 발명은 차량 등에 설치되어 차량의 실내를 냉방시키도록 한 열교환기에 있어서, 이 열교환기의 냉방작용시 발생하는 냉매의 열을 감지하고 이 감지된 열에 따라 팽창작용을 하면서 냉매의 흐름을 제어하도록 함에 있어서, 상기 온도감지 기능을 가진 팽창밸브의 온도감지 유닛을 용이하게 설치할 수 있도록 하고 상기 팽창밸브의 사양이 달라지더라도 상기 온도감지 유닛을 용이하게 교체하여 설치할 수 있도록 한 온도감지 유닛을 가진 팽창밸브에 관한 것이다.The present invention provides a heat exchanger installed in a vehicle to cool an interior of a vehicle, wherein the heat exchanger detects heat generated during cooling of the heat exchanger and controls the flow of the refrigerant while inflating according to the detected heat. An expansion valve having a temperature sensing unit for easily installing a temperature sensing unit of an expansion valve having a temperature sensing function and easily replacing and installing the temperature sensing unit even if the specification of the expansion valve is changed. It is about.

종래 차량 등에 설치되어 차량의 실내를 냉방시키도록 한 열교환기에 있어서, 이 열교환기의 냉방작용시 발생하는 냉매의 열을 감지하고 이 감지된 열에 따라 팽창작용을 하면서 냉매의 흐름을 제어하도록 하며, 상기 냉매의 온도를 감지하는 온도감지 기능을 가진 팽창밸브는 도 1에서와 같이 상하의 냉매통로(2)(3)를 가진 팽창밸브 본체(1)의 중앙에 냉매의 압력과 온도감지 유닛(7)의 작동에 따라 승강작용을 하는 다이아프램(4)의 작동에 따라 승강하면서 통로(3)를 개폐하는 밸브(6)를 설치하고 상기 본체(1)의 상부에는 온도감지 유닛(7)을 일체형으로 설치하며 상기 다이아프램(4)의 상부에는 흡인부(8)를 형성하여 구성되어 있었다.In a heat exchanger installed in a conventional vehicle to cool the interior of a vehicle, the heat exchanger detects heat generated during the cooling operation of the heat exchanger and controls the flow of the refrigerant while expanding according to the detected heat. The expansion valve having a temperature sensing function for detecting the temperature of the refrigerant has a pressure of the refrigerant and the temperature sensing unit 7 at the center of the expansion valve body 1 having the upper and lower refrigerant passages 2 and 3 as shown in FIG. In accordance with the operation of the diaphragm (4), which moves up and down, a valve (6) is installed to open and close the passage (3) while moving up and down. The suction part 8 was formed in the upper part of the diaphragm 4, and was comprised.

그러나, 상기와 같은 종래의 것은 상기 온도감지 유닛(7)이 팽창밸브의 본체(1) 상부에 일체형으로 설치되어 있었기 때문에 상기 본체(1)의 밸브(6)나 다이아프램(4) 또는 온도감지 유닛(7)의 고장이 발생될 경우 상기 팽창밸브 전체를 교체해야 하는 폐단이 있었으며, 또, 상기 팽창밸브의 사양이 달라질 경우에도 부득이 상기 온도감지 유닛을 함께 교체해야 하므로서 소재의 낭비를 초래하게 되는 등의 문제점이 있었다.However, in the conventional art as described above, since the temperature sensing unit 7 is integrally installed on the main body 1 of the expansion valve, the valve 6 or the diaphragm 4 of the main body 1 or the temperature sensing unit 7 is integrated. When the failure of the unit 7 occurs, there is a closed end to replace the entire expansion valve, and even if the specification of the expansion valve is inevitably, the temperature sensing unit must be replaced together, resulting in waste of material. There was a problem.

본 발명은 상기와 같은 종래의 제반 문제점을 감안하여 안출한 것으로 본 발명은 차량 등에 설치되어 차량의 실내를 냉방시키도록 한 열교환기에 있어서, 이 열교환기의 냉방작용시 발생하는 냉매의 열을 감지하고 이 감지된 열에 따라 팽창작용을 하면서 냉매의 흐름을 제어하도록 함에 있어서, 상기 온도감지 기능을 가진 팽창밸브의 온도감지 유닛을 용이하게 설치할 수 있도록 하고 상기 팽창밸브의 사양이 달라지더라도 상기 온도감지 유닛을 용이하게 교체하여 설치할 수 있도록 한 온도감지 유닛을 가진 팽창밸브를 제공하려는 것인바, 이를 이하에서 첨부한 도면에 의거하여 상세히 설명하면 다음과 같다.The present invention has been made in view of the above-mentioned conventional problems. The present invention provides a heat exchanger installed in a vehicle and the like to cool the interior of the vehicle, and detects heat of the refrigerant generated during the cooling operation of the heat exchanger. In controlling the flow of the refrigerant while inflating according to the sensed heat, it is possible to easily install the temperature sensing unit of the expansion valve having the temperature sensing function and the temperature sensing unit even if the specification of the expansion valve is changed. It is intended to provide an expansion valve having a temperature sensing unit so that it can be easily installed to replace, described in detail based on the accompanying drawings as follows.

도 1은 종래 발명의 구조를 나타내는 단면도1 is a cross-sectional view showing the structure of the conventional invention

도 2는 본 발명의 구조를 나타내는 단면도2 is a cross-sectional view showing the structure of the present invention.

<도면의주요부분에대한부호의설명>Explanation of symbols on the main parts of the drawing

1 : 본체1: main body

2,3 : 냉매통로2,3: Refrigerant passage

4 : 다이아프램4: diaphragm

6 : 밸브6: valve

7 : 온도감지 유닛7: temperature sensing unit

8 : 흡인부8: suction part

9 : 삽입부9: insertion unit

10 : 삽입편10: insertion piece

11 : 박판11: thin plate

12 : 클램프12: clamp

도 2는 본 발명에 따른 온도감지 유닛을 가진 팽창밸브를 보인 단면도이다. 이에 도시된 바와 같이, 상,하측으로 냉매통로(2)(3)가 형성된 팽창밸브의 본체(1)가 마련되고, 이의 중앙에는 냉매의 압력과 온도감지 유닛(7)의 작동에 따라 승강작용을 하도록 다이아프램(4)이 설치된다. 그리고, 이의 하측으로는 이와 연동되어 승강하면서 통로(3)의 개도를 조절할 수 있도록 일체로 형성된 밸브(6)가 길게 마련되고, 본체(1)의 상부에는 온도감지 유닛(7)이 설치되는데, 이 온도감지 유닛(7)은 본체(1)의 외부로 연장 형성되는 것으로서 내부에는 온도에 따라 부피가 가변하는 유체가 봉입되고 일단측에는 다이아프램(4)의 상부를 덮는 흡인부(8)와 연결 형성된다. 한편, 본 발명의 팽창밸브는 본체(1) 상단부가 개방형으로 형성되어 이의 내부에 온도감지 유닛(7)과 연결된 흡인부(8)가 삽탈 가능하게 마련되는 것으로서, 이를 위해 본체(1) 상단부에는 상향 개구된 삽입부(9)가 형성되고, 흡인부(8)에는 이 삽입부(9)에 삽탈되도록 이에 대응되는 형상의 삽입편(10)이 마련된다. 아울러, 이 삽입편(10)과 다이아프램(4)의 사이에는 흡인작용이 이루어지도록 박판(11)을 설치하여 온도감지 유닛(7)이 교체가능하게 본체(1)에 설치된다.2 is a cross-sectional view showing an expansion valve having a temperature sensing unit according to the present invention. As shown in the drawing, the main body 1 of the expansion valve in which the refrigerant passages 2 and 3 are formed on the upper and lower sides thereof is provided at the center thereof. The diaphragm 4 is installed to make. And, the lower side thereof is provided with a valve 6 integrally formed so as to adjust the opening degree of the passage (3) in conjunction with the lifting and lowering, and the temperature sensing unit (7) is installed on the upper portion of the main body (1), The temperature sensing unit 7 extends to the outside of the main body 1, and is connected to a suction part 8 that covers a top of the diaphragm 4 at one end thereof with a fluid having a volume variable therein. Is formed. On the other hand, the expansion valve of the present invention is that the upper end portion of the main body (1) is formed to be open so that the suction portion (8) connected to the temperature sensing unit (7) therein is detachably provided. An upwardly opening insertion portion 9 is formed, and the suction portion 8 is provided with an insertion piece 10 having a shape corresponding thereto to be inserted into and removed from the insertion portion 9. In addition, a thin plate 11 is installed between the insertion piece 10 and the diaphragm 4 so that a suction action is performed, and the temperature sensing unit 7 is installed in the main body 1 so as to be replaced.

또, 온도감지 유닛(7)이 본체(1)에서 이탈되지 않고 밀폐된 상태로 견고히 설치하기 위해 삽입부(9)의 외부측에는 이를 감싸는 클램프(12) 및 크립 등을 설치하는데, 이때 클램프(12)의 선단측이 삽입편(10)을 다이아프램측으로 가압하여 그 사이를 보다 견고히 밀폐시키게 된다.In addition, in order to firmly install the temperature sensing unit 7 in a sealed state without being detached from the main body 1, a clamp 12 and a creep, etc. surrounding the insertion part 9 are installed on the outer side of the insertion part 9. ), The tip side presses the insertion piece 10 toward the diaphragm side to more tightly seal the space therebetween.

이상과 같이 구성된 본 발명은 상기 상하의 냉매통로(2)(3)를 가진 팽창밸브 본체(1)의 중앙에 냉매의 압력과 온도감지 유닛(7)을 설치한 상태에서 열교환기를 가동시키게 되면, 상기 열교환기의 냉매시스템에 의하여 냉매가 순환하면서 냉방작용을 하게 되며 상기 냉방작용시 냉매의 온도가 상승하게 되면, 이를 온도감지 유닛(7)이 감지하여 그 내부의 유체가 팽창시키면서 흡인부(8)에 설치된 다이아프램(4)을 작동시키게 되고 이의 작동에 따라 밸브(6)가 승강하면서 통로(3)를 개폐하여 냉매의 흐름을 제어하게 되는 것으로, 상기 팽창밸브의 본체(1) 상단부를 개방형으로 형성하여 이 개방부에 삽입부(9)를 형성하고 이 삽입부(9)에는 상기 온도감지 유닛(7)의 삽입편(10)이 삽입되도록 하므로서 상기 온도감지 유닛(7)의 설치와 교체가 용이하게 이루어지며 상기 삽입편(10)과 다이아프램(4)의 사이에는 박판(11)을 설치하여 흡인작용을 촉진시킬 수 있게 된다.When the heat exchanger is operated while the pressure and temperature sensing unit 7 of the refrigerant is installed in the center of the expansion valve body 1 having the upper and lower refrigerant passages 2 and 3, When the refrigerant is circulated by the refrigerant system of the heat exchanger, the cooling is circulated. When the temperature of the refrigerant rises during the cooling operation, the temperature sensing unit 7 detects this and expands the fluid therein while the suction unit 8 expands. The diaphragm 4 installed in the valve is operated to open and close the passage 3 while the valve 6 moves up and down to control the flow of the refrigerant. The upper end of the main body 1 of the expansion valve is opened. The insertion part 9 of the temperature sensing unit 7 is inserted into the insertion part 9 so that the insertion and replacement of the temperature sensing unit 7 can be performed. Made easy Between the groups insertion piece 10 and the diaphragm (4) it is possible to facilitate the suction action by installing the sheet (11).

따라서, 상기 팽창밸브의 일부 사양이 변경되거나 고장이 발생되더라도 이의 교체가 가능하다.Therefore, even if some specifications of the expansion valve is changed or a failure occurs, it can be replaced.

또, 상기 온도감지 유닛(7)이 본체(1)에서 이탈되지 않고 밀폐된 상태로 설치하기 위하여 상기 삽입부(9)와 삽입편(10)에 클램프(12)를 설치하거나 크립 등을 설치하여 구성하므로서 상기 흡인부(8)의 밀폐성을 유지시킬 수 있게 되며, 상기 온도감지 유닛(7)의 유동이나 이완을 방지할 수 있게 되는 것이다.In addition, in order to install the temperature sensing unit 7 in a sealed state without being separated from the main body 1, a clamp 12 or a creep or the like is installed on the inserting portion 9 and the inserting piece 10. By constitution, it is possible to maintain the sealing property of the suction unit 8 and to prevent the flow or relaxation of the temperature sensing unit 7.

이상과 같은 본 발명은 상기와 같이 팽창밸브의 상부를 개방형으로 구성하고 이에 온도감지 유닛(7)을 교체 가능하게 설치하도록 하므로서 상기 팽창밸브의 사양변경이나 고장의 유발시에도 상기 부품들을 용이하게 교체할 수 있게 되며, 이에 따라 소재의 낭비를 방지할 수 있게 되는 점 등의 특징을 지닌 것이다.The present invention as described above is configured to open the upper portion of the expansion valve as described above and to install the temperature sensing unit 7 so that it is easy to replace the components even when changing the specification or failure of the expansion valve It will be possible, according to the features such as being able to prevent the waste of the material.

Claims (2)

내부 상하측에 냉매통로(2)(3)가 형성된 팽창밸브 본체(1)와, 상기 본체(1)의 상단측에 설치되는 흡인부(8)와, 상기 흡인부(8)와 연결되어 외부의 온도를 감지하는 온도감지 유닛(7)과, 상기 온도감지 유닛(7)과 냉매의 압력에 의해 승강하도록 상기 흡인부(8)의 하단측엔 설치된 다이아프램(4)과, 상기 다이아프램(4)과 연동되어 상기 통로(3)를 개폐하도록 마련된 밸브(6)를 구비한 팽창밸브에 있어서, 상기 팽창밸브의 본체(1) 상단부를 개방하여 형성된 삽입부(9)와, 상기 삽입부(9)에 삽탈가능하도록 상기 흡입부에서 연장 형성된 삽입편(10)과, 상기 삽입편(10)과 다이아프램(4)의 사이에 설치되는 박판(11)이 구비된 것을 특징으로 하는 온도감지 유닛을 가진 팽창밸브.Expansion valve main body (1) having a refrigerant passage (2) and (3) formed on the upper and lower sides thereof, a suction part (8) installed at the upper end side of the main body (1), and connected to the suction part (8) A temperature sensing unit 7 for sensing a temperature of the diaphragm, a diaphragm 4 provided at a lower end side of the suction unit 8 so as to move up and down by the pressure of the temperature sensing unit 7 and the refrigerant, and the diaphragm ( An expansion valve having a valve (6) interlocked with (4) to open and close the passage (3), comprising: an insertion portion (9) formed by opening an upper end of a main body (1) of the expansion valve, and the insertion portion ( 9) an insertion piece 10 extending from the suction part so as to be removable from the suction part, and a thin plate 11 provided between the insertion piece 10 and the diaphragm 4; Expansion valve with 제 1항에 있어서, 상기 삽입편(10)의 이탈을 방지할 수 있도록 일측은 상기 삽입부(9)의 외부를 감싸 고정되고 타측은 상기 삽입편(10)을 가압하도록 클램프(12)가 마련된 것을 특징으로 하는 온도감지 유닛을 가진 팽창밸브.According to claim 1, One side is wrapped around the outside of the insertion portion 9 so as to prevent the separation of the insertion piece 10 and the other side is provided with a clamp 12 to press the insertion piece 10 Expansion valve having a temperature sensing unit, characterized in that.
KR1019990062691A 1999-12-27 1999-12-27 Expand valve with unit temperature sensing unit KR100348485B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5727570U (en) * 1980-07-23 1982-02-13
JPS61151168U (en) * 1985-03-08 1986-09-18
KR930025995U (en) * 1992-05-30 1993-12-24 삼성전자주식회사 Pressure regulating device of expansion valve
JPH10318629A (en) * 1997-05-16 1998-12-04 Pacific Ind Co Ltd Thermal expansion valve manufacturing method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5727570U (en) * 1980-07-23 1982-02-13
JPS61151168U (en) * 1985-03-08 1986-09-18
KR930025995U (en) * 1992-05-30 1993-12-24 삼성전자주식회사 Pressure regulating device of expansion valve
JPH10318629A (en) * 1997-05-16 1998-12-04 Pacific Ind Co Ltd Thermal expansion valve manufacturing method

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