KR980010163A - Expansion device of air conditioner - Google Patents
Expansion device of air conditioner Download PDFInfo
- Publication number
- KR980010163A KR980010163A KR1019960026733A KR19960026733A KR980010163A KR 980010163 A KR980010163 A KR 980010163A KR 1019960026733 A KR1019960026733 A KR 1019960026733A KR 19960026733 A KR19960026733 A KR 19960026733A KR 980010163 A KR980010163 A KR 980010163A
- Authority
- KR
- South Korea
- Prior art keywords
- expansion valve
- temperature
- air conditioner
- temperature sensor
- heat exchanger
- Prior art date
Links
- 239000000446 fuel Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000003507 refrigerant Substances 0.000 abstract description 17
- 238000005057 refrigeration Methods 0.000 abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052802 copper Inorganic materials 0.000 abstract description 3
- 239000010949 copper Substances 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000011555 saturated liquid Substances 0.000 description 1
- 230000009747 swallowing Effects 0.000 description 1
Classifications
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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
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
- F25B41/345—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids
- F25B41/347—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids with the valve member being opened and closed cyclically, e.g. with pulse width modulation
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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
- 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
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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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2117—Temperatures of an evaporator
- F25B2700/21174—Temperatures of an evaporator of the refrigerant at the inlet of the evaporator
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2117—Temperatures of an evaporator
- F25B2700/21175—Temperatures of an evaporator of the refrigerant at the outlet of the evaporator
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
본 발명은 에어콘의 팽창장치에 관한 것으로, 종래의 같은 가늘고 긴 동관의 모세관은, 압축기의 토출량 변환 또는 부하변동에 따른 고, 저압의 변화에 대응하여 냉매순환량의 적절하게 조절하기가 불가능하므로 실내측의 제2열교환기(증발기)의 과열도를 제어할 수 없어 결과적으로 냉동사이클의 효율 및 성능이 저하되는 문제점이 있었던 바, 본 발명에서는 증발기용 제2열교환기의 입, 출구측에 각각 제1, 제2온도센서를 설치하고, 그 제1, 제2온도센서 간의 온도차에 의해 개폐되는 온/오프식 팽창밸브를 상기 제1온도센서와 응축기용 제1열고환기 사이에 장착하여, 압축기의 토출량에 따라서나 또는 상기 온도센서간의 온도차에 따라 적정한 냉매가 유동되도록 조절함으로써, 에어콘의 성능과 효율을 향항시키게 되는 것은 물론이고, 상기 전자석을 이용한 온/오프식 팽창벨브의 채용으로 온도식 또는 전자식 팽창변에 비해 가격이 저렴하다는 이점도 있다.The present invention relates to an expansion device for an air conditioner, and a conventional capillary of a thin and long copper pipe can not appropriately adjust the refrigerant circulation amount in response to change in discharge amount of the compressor or change in high and low pressure due to load variation, The efficiency and performance of the refrigeration cycle are deteriorated. As a result, there is a problem in that the first and second heat exchangers (evaporators) And an on / off type expansion valve that is opened or closed by a temperature difference between the first and second temperature sensors is installed between the first temperature sensor and the first open hearth for the condenser, The performance and efficiency of the air conditioner are improved by controlling the proper refrigerant to flow in accordance with the temperature difference between the temperature sensor and the temperature sensor, The advantage of using the on / off type expansion valve is that the price is lower than the temperature type or electronic type expansion valve.
Description
제1도는 종래의 냉동사이클을 설명하기 위하여 보인 구성도.FIG. 1 is a schematic view for explaining a conventional refrigeration cycle. FIG.
제2도는 본 발명에 의한 냉동사이클을 보인 구성도.FIG. 2 is a view showing a refrigeration cycle according to the present invention. FIG.
제3도는 본 발명에 의한 팽창밸브를 보인 종단면도.FIG. 3 is a longitudinal sectional view showing an expansion valve according to the present invention. FIG.
제4도는 본 발명에 의한 팽창밸브의 동작을 보인 그래프.4 is a graph showing the operation of the expansion valve according to the present invention.
* 도면의 주요부분에 대한 부호의 설명DESCRIPTION OF THE REFERENCE NUMERALS
10: 온/오프식 팽찰밸브 11: 노즐입구10: on / off type of swallowing valve 11: nozzle inlet
12: 노즐 출구 13: 개폐용 니들12: nozzle outlet 13: opening / closing needle
14: 코일스프링 15: 전자석14: coil spring 15: electromagnet
20: 제1온도센서 30: 제2온도센서20: first temperature sensor 30: second temperature sensor
본 발명은 에어콘의 팽창장치에 관한 것으로, 특히 연료분사장치에 사용되는 온/오프 타임 콘트롤에 의해 연료의 양을 조절하는 밸브를 에어콘의 팽창장치로 사용하여, 냉매의 순환량을 적절하게 조절함으로써, 최적의 냉각사이클을 형성하여 에어콘의 효율을 향상하도록 한 에어콘의 냉각 팽창장치에 관한 것이다.The present invention relates to an expansion device for an air conditioner, and more particularly, to an expansion device for an air conditioner, in which a valve for controlling the amount of fuel by on / off time control used in a fuel injection device is used as an expansion device of an air conditioner, And more particularly, to a cooling and expansion device for an air conditioner that improves the efficiency of an air conditioner by forming an optimal cooling cycle.
일반적으로 냉동사이클은 제1도에 도시된 바와 같이, 냉매를 저온, 저압의 기체 상태에서 고온, 고압의 기체상태로 변화시키는 압축기(1)와, 그 압축기(1)에서 변화된 기체상태의 냉매를 액체상태로 응축시키면서 외부에 열을 방출하는 제1열교환기(응축기)(2)와, 그 제1열교환기에서 변화된 액체상태의 냉매를 저온저압의 포화액 상태로 변환시키는 모세관(3)과, 그 모세관(3)에서 변화된 포화액 상태의 냉매를 저압의 기체상태로 증발시키면서 외부의 열을 흡수하는 제2열교환기(증발기)(4)로 구성되어 있다.Generally, as shown in FIG. 1, the refrigeration cycle includes a compressor 1 for changing the refrigerant from a low-temperature and low-pressure gas state to a high-temperature and high-pressure gas state, A first heat exchanger (condenser) 2 for discharging heat to the outside while condensing the refrigerant into a liquid state, a capillary 3 for converting the refrigerant in the liquid state changed in the first heat exchanger into a saturated low- And a second heat exchanger (evaporator) 4 for absorbing the external heat while evaporating the refrigerant in the saturated liquid state changed in the capillary tube 3 to a low-pressure gas state.
여기서, 감압장치로 사용되는 상기 모세관(3)은, 통상 가늘고 긴 동관으로 형성되어 상기 압축기(1)로부터 토출되는 냉매가 가늘고 긴 모세관(3)을 흐르면서 팽창되도록 되어 있었다.Here, the capillary tube 3 used as a decompression device is usually formed as a thin and long copper tube, so that the refrigerant discharged from the compressor 1 is caused to expand while flowing through a thin and long capillary tube 3.
그러나, 상기와 같은 종래의 가늘고 긴 동관의 모세관(3)은 압축기(1)의 토출량 변화 또는 부하변동에 따른 고, 저압의 변화에 대응하여 냉매의 순환량을 적절하게 조절하기가 불가능하므로, 상기 제2열교환기(증발기)(4)의 과열도를 제어할 수 없어 결과적으로 냉동사이클의 효율 및 성능이 저하되는 문제점이 있었다.However, since the capillary tube 3 of the conventional thin and long copper tube can not control the circulation amount of the refrigerant appropriately in accordance with the change of the discharge amount of the compressor 1 or the change of the high and low pressure according to the load variation, It is impossible to control the degree of superheat of the two-heat exchanger (evaporator) 4, resulting in a problem of deteriorating the efficiency and performance of the refrigeration cycle.
따라서, 본 발명의 목적은 상기 압축기의 토출량 변화 또는 부하변동에 따른 고 저압의 변화에 능동적으로 대응하여 제2열교환기(증발기)의 과열도를 적절하게 제어함으로써 냉동사이클의 효율 및 성능을 향상시킬 수 있는 에어콘의 팽창장치를 제공하는데 있다.Accordingly, it is an object of the present invention to improve the efficiency and performance of the refrigeration cycle by suitably controlling the degree of superheat of the second heat exchanger (evaporator) in response to a change in the discharge amount of the compressor or a change in the high- And an expansion device for the air conditioner.
이와 같은 본 발명의 목적을 달성하기 위하여, 증발기용 제2열교환기의 입·출구축에 각각 설치되는 제1, 제2온도센서와, 그 제1, 제2온도센서 간의 온도차에 의해 개폐되며 상기 제1온도센서와 응축기용 제1열교환기 사이에 장착되는 온/오프식 팽창밸브로 구성하는 것을 특징으로 하는 에어콘의 냉각팽창장치가 제공된다.In order to achieve the object of the present invention, there is provided a heat exchanger comprising: first and second temperature sensors provided respectively at the inlet and outlet of an evaporator second heat exchanger; And an on / off type expansion valve mounted between the first temperature sensor and the first heat exchanger for the condenser.
이하, 본 발명에 의한 팽창장치를 첨부된 도면에 의거하여 상세하게 설명한다.Hereinafter, an expansion device according to the present invention will be described in detail with reference to the accompanying drawings.
제2도에 도시된 바와 같이 본 발명의 팽창장치는, 응축기용 제1열교환기(2)와 증발기용 제2열교환기(4)의 사이에 냉매의 유량을 제어하기 위한 온/오프식 팽창밸브(10)가 장착되고, 그 온/오프식 팽창밸브(10)의 출구측에 응축기와 온/오프식 팽창밸브(10)를 거친 냉매의 온도를 측정하기 위한 제1온도센서(20)를 설치하며, 상기 제2열교환기(4)의 출구측에는 분출되는 냉매의 온도를 측정하기 위한 제2온도센서(30)로 구성된다.As shown in FIG. 2, the expansion device of the present invention includes an on / off expansion valve (not shown) for controlling the flow rate of the refrigerant between the first heat exchanger 2 for the condenser and the second heat exchanger 4 for the evaporator A first temperature sensor 20 for measuring the temperature of the refrigerant passing through the condenser and the on / off type expansion valve 10 is installed at the outlet side of the on / off type expansion valve 10, , And a second temperature sensor (30) for measuring the temperature of the refrigerant discharged from the outlet side of the second heat exchanger (4).
여기서, 상기 온/오프식 팽창밸브(10)는 제3도에 도시된 바와 같이, 연통된 입구부(11)와 출구부(12)의 사이에 개폐용 니들(needle)(13)이 내장된 코일스프링(14)이 개재되고, 그 코일스프링(14)이 외주연에는 전자석(15)이 장착된 연료분사용 밸브를 적용하는 것이 바람직하다.As shown in FIG. 3, the on / off type expansion valve 10 is provided with a needle 13 for opening and closing between the inlet 11 and the outlet 12, It is preferable to apply the fuel supply valve having the coil spring 14 interposed thereon and the coil spring 14 having the electromagnet 15 mounted on the outer circumference thereof.
도면중 종래와 동일한 부분에 대하여는 동일한 부호를 부여한다.In the drawings, the same reference numerals are given to the same parts as those in the prior art.
상기와 같이 구성되는 본 발명에 의한 팽창장치의 동작을 설명하면 다음과 같다.The operation of the inflator according to the present invention will now be described.
상기 온/오프식 팽창밸브(10)에 전원이 인가되면, 개폐용 니들(13)이 코일스프링(14)을 압축하면서 상기 온/오프식 팽창밸브(10)를 개방하게 되고, 이에 따라 상기 응축용 제1열교환기(2)에서 액체상태로 분출되는 냉매가 개방된 상기 밸브(10)를 통과하여 증발용 제2열교환기(4)로 유입된다. 이 과정에서 냉매는 상기 제1온도센서(20)에 의해 그 온도가 감지된다.When the power is applied to the on / off type expansion valve 10, the opening / closing needle 13 opens the on / off type expansion valve 10 while compressing the coil spring 14, The refrigerant discharged in the liquid state in the first refrigerant heat exchanger 2 flows into the second heat exchanger 4 for evaporation through the opened valve 10. In this process, the temperature of the refrigerant is sensed by the first temperature sensor 20.
한편, 이 유입된 액체상태의 냉매가 증발기(4)내에서 증발되어 기체 상태로 분출되면서 상기 제2온도센서(30)에 의해 그 온도가 측정된다.On the other hand, the introduced refrigerant in the liquid state evaporates in the evaporator 4 and is discharged in a gaseous state, and the temperature is measured by the second temperature sensor 30.
이때, 상기 제1온도센서(20)에 의해 감지된 온도와 제2온도센서(30)에 의해 감지된 온도의 차가 4℃∼6℃의 적정과열도를 넘어서게 되거나, 또는 압축기로(1)부터의 토출량이 증가할 경우에는 상기 온/오프식 팽창밸브(10)의 열림시간을 늘리는 반면에 닫힘시간을 줄여 냉매의 순환량을 늘리고, 이를 통해 에어콘의 전체효율을 상승시키도록 하는 것이다. 즉, 상기 밸브의 1회 개폐시간을 합하여 1주기로 상정할 때, 그 주기는 항상 일정하지만, 열리는 시간과 닫히는 시간을 적절하게 조절하도록 하는 것이다.At this time, the difference between the temperature sensed by the first temperature sensor 20 and the sensed temperature sensed by the second temperature sensor 30 may exceed the appropriate range of 4 ° C to 6 ° C, The opening time of the on / off type expansion valve 10 is increased while the closing time is reduced to increase the circulation amount of the refrigerant, thereby increasing the overall efficiency of the air conditioner. That is, when assuming the period of one valve opening and closing time as one cycle, the period is always constant, but the opening time and the closing time are properly adjusted.
이상에서 설명한 바와 같이, 본 발명에 의한 에어콘의 팽창장치는, 증발기용 제2열교환기의 입, 출구측에 각각 제1, 제2온도센서를 설치하고, 그 제1, 제2온도센서 간의 온도차에 의해 개폐되는 온/오프식 팽창밸브를 상기 제1온도센서와 응축기용 제1열교환기 사이에 장착하여, 압축기의 토출량에 따라서나 또는 상기 온도센서간의 온도차에 따라 적정한 냉매가 유동되도록 조절함으로써, 에어콘의 성능과 효율을 향상시키게 되는 것은 물론이고, 상기 전자석을 이용한 온/오프식 팽창밸브의 채용으로 온도식 또는 전자식 팽창변에 비해 가격이 저렴하다는 이점도 있다.As described above, in the expansion device for an air conditioner according to the present invention, first and second temperature sensors are provided on the inlet and outlet sides of the evaporator second heat exchanger, respectively, and the temperature difference between the first and second temperature sensors Off type expansion valve is installed between the first temperature sensor and the first heat exchanger for the condenser so that an appropriate refrigerant flows in accordance with the discharge amount of the compressor or the temperature difference between the temperature sensors, Not only the performance and efficiency of the air conditioner are improved, but also the advantage that the price is lower than the temperature type or the electronic type inflation side by employing the on / off type expansion valve using the electromagnet.
상기와 같은 본 발명의 실시예는 반드시 에어콘에만 사용되는 것이 아니라, 통상의 냉각장치가 사용되는 분야에 다양하게 적용할 수 있다.The embodiment of the present invention as described above is not necessarily used only in an air conditioner, but can be applied to various fields where an ordinary cooling device is used.
Claims (2)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960026733A KR100206788B1 (en) | 1996-07-02 | 1996-07-02 | Expansion apparatus of airconditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960026733A KR100206788B1 (en) | 1996-07-02 | 1996-07-02 | Expansion apparatus of airconditioner |
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| Publication Number | Publication Date |
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| KR980010163A true KR980010163A (en) | 1998-04-30 |
| KR100206788B1 KR100206788B1 (en) | 1999-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100321982B1 (en) * | 1999-05-13 | 2002-02-04 | 윤종용 | Apparatus and method for collecting statistic data in mobile communication system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100321982B1 (en) * | 1999-05-13 | 2002-02-04 | 윤종용 | Apparatus and method for collecting statistic data in mobile communication system |
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