KR100424103B1 - Air-conditioner have a facility for protecting over cooling - Google Patents

Air-conditioner have a facility for protecting over cooling Download PDF

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Publication number
KR100424103B1
KR100424103B1 KR10-2001-0033005A KR20010033005A KR100424103B1 KR 100424103 B1 KR100424103 B1 KR 100424103B1 KR 20010033005 A KR20010033005 A KR 20010033005A KR 100424103 B1 KR100424103 B1 KR 100424103B1
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KR
South Korea
Prior art keywords
expansion valve
heat exchanger
refrigerant
compressor
indoor
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KR10-2001-0033005A
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Korean (ko)
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KR20020094656A (en
Inventor
송길호
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위니아만도 주식회사
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Priority to KR10-2001-0033005A priority Critical patent/KR100424103B1/en
Priority to CN02123043A priority patent/CN1391068A/en
Publication of KR20020094656A publication Critical patent/KR20020094656A/en
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Publication of KR100424103B1 publication Critical patent/KR100424103B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41—Defrosting; Preventing freezing
    • F24F11/43—Defrosting; Preventing freezing of indoor units
    • 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
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/005—Outdoor unit expansion valves

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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)
  • Air Conditioning Control Device (AREA)

Abstract

본 발명은 과냉 방지기능을 갖는 에어컨에 관한 것으로서, 실내기에 열교환기를 두 개 설치하고 각각의 열교환기 입력측에 팽창밸브를 설치하여 독립적으로 팽창밸브를 제어함으로써 실내기의 열교환기에서 냉방과 난방이 동시에 이루어지도록 함으로써 압축기의 잦은 온오프없이 제습기능은 물론 실내가 과냉되는 것을 방지할 수 있어 압축기의 수명을 연장시킬 수 있을 뿐만아니라 냉방 및 제습기능수행시 실내의 과냉을 방지할 수 있는 이점이 있다.The present invention relates to an air conditioner having an anti-cooling function, wherein two heat exchangers are installed in an indoor unit, and expansion valves are installed at each input side of the heat exchanger to independently control expansion valves, thereby simultaneously cooling and heating in the heat exchanger of the indoor unit. Dehumidification without frequent on / off of the compressor can be prevented from overcooling the room can extend the life of the compressor as well as to prevent the overcooling of the room during cooling and dehumidification function performance.

Description

과냉 방지기능을 갖는 에어컨{AIR-CONDITIONER HAVE A FACILITY FOR PROTECTING OVER COOLING}Air-conditioner with overcooling function {AIR-CONDITIONER HAVE A FACILITY FOR PROTECTING OVER COOLING}

본 발명은 과냉 방지기능을 갖는 에어컨에 관한 것으로서, 보다 상세하게는 실내기에 열교환기를 두 개 설치하고 각각의 열교환기 입력측에 팽창밸브를 설치하여 독립적으로 팽창밸브를 제어함으로써 실내기의 열교환기에서 냉방과 난방이 동시에 이루어지도록 함으로써 제습기능은 물론 실내가 과냉되는 것을 방지할 수 있도록 한 과냉 방지기능을 갖는 에어컨에 관한 것이다.The present invention relates to an air conditioner having an anti-cooling function, and more particularly, two heat exchangers are installed in an indoor unit, and expansion valves are installed at each input side of the heat exchanger to independently control the expansion valve to provide cooling and cooling in the heat exchanger of the indoor unit. The present invention relates to an air conditioner having an overcooling function to prevent the dehumidification function and the room from being overcooled by allowing heating to be performed at the same time.

일반적으로 에어컨은 냉각사이클(cooling cycle)을 이용하여 압축기에서 고온, 고압으로 압축된 냉매가스를 응축기에서 액화시키고, 액상의 냉매를 팽창밸브에서 저온, 저압으로 변화시킨 뒤 증발기에서 기화열에 의해 냉각작용을 수행하도록 함으로써, 여름철 무더운 날씨에 사무실, 방 또는 건물내부와 같이 밀폐된 실내공간으로 냉풍을 공급하여 활동에 적합한 온도를 유지하는 공기조화를 기본으로 한다.In general, an air conditioner uses a cooling cycle to liquefy refrigerant gas compressed at a high temperature and high pressure in a compressor in a condenser, and changes a liquid refrigerant to a low temperature and a low pressure in an expansion valve, and then cools it by evaporation heat in an evaporator. By performing the, it is based on the air conditioning to maintain the temperature suitable for the activity by supplying cold air to the closed indoor space, such as the office, room or building interior in hot summer weather.

이러한 에어컨은 기능이나 유니트의 구성에 따라 여러 종류로 대별되어 지며, 기능에 의한 분류에서는 냉방전용, 냉방 및 제습전용, 냉방 및 난방겸용으로 분류될 수 있다.These air conditioners are classified into various types according to the function or the configuration of the unit. In the classification by functions, they can be classified into cooling only, cooling and dehumidifying only, and cooling and heating.

또, 유니트의 구성에 의한 분류에서는 냉방과 방열기능을 일체화하여 창문 등에 설치되는 일체형 에어컨와, 실내 측 공간에는 냉각장치를 실외 측 공간에는 방열 및 압축장치를 각각 분리시켜 설치하는 분리형 에어컨으로 대별된다.In addition, in the classification of the unit configuration, the air conditioner is divided into an integrated air conditioner installed in a window or the like by integrating cooling and heat dissipation functions, and a separate type air conditioner that separates and installs a cooling device in an indoor space and a heat dissipation and compression device in an outdoor space.

즉, 유니트에 의한 분류에 따르면, 에어컨은 각 구성요소들이 하나의 캐비닛(cabinet)에 내장된 일체형과, 증발기를 내장한 실내기 및 압축기와 응축기 등을 내장한 실외기로 분리 구성된 분리형으로 대별되는 것이다.That is, according to the classification by the unit, the air conditioner is roughly divided into an integral type in which each component is built in a cabinet, a separate type consisting of an indoor unit having an evaporator and an outdoor unit having a compressor and a condenser.

전자의 대표적인 것으로는 창문형 에어컨이 있고, 후자의 경우에는 벽걸이형과 패키지형 에어컨이 대표적이다.The representative of the former is a window air conditioner, the latter is a wall-mounted and packaged air conditioner.

도 1은 일반적인 에어컨을 개략적으로 나타낸 블록 구성도이다.1 is a block diagram schematically showing a general air conditioner.

여기에 도시된 바와 같이 실외기(10)는 냉매를 압축시키는 압축기(130)와 압축기(130)에 의해 압축된 냉매를 응축기(110)와 냉매에 함유된 열의 방출을 원할하게 하기 위한 실외기 송풍기(120)에 해당되는 것으로서, 소음 및 열방출로 인하여 건물의 옥상이나 베란다 외부에 설치하게 된다. 또한, 실내기(20)는 응축기(110)에서 보내진 냉매를 팽창밸브(210)를 거쳐 증발기(230)로 보내지면서 액체 상태에서 기체 상태로 증발될 때 발생되는 차가운 공기를 실내로 공급하는 실내기 송풍기(220)에 해당하는 것으로서, 냉방하고자 하는 건물 내부에 설치된다.As shown here, the outdoor unit 10 includes a compressor 130 for compressing the refrigerant and an outdoor unit blower 120 for smoothly discharging the heat contained in the condenser 110 and the refrigerant from the refrigerant compressed by the compressor 130. ) Is installed on the roof of the building or outside the veranda due to noise and heat dissipation. In addition, the indoor unit 20 is an indoor unit blower for supplying the cool air generated when the refrigerant evaporated from the liquid state to the gas state while being sent to the evaporator 230 through the expansion valve 210 to the refrigerant sent from the condenser 110 ( 220) is installed inside the building to be cooled.

위와 같이 이루어진 에어컨은 전원이 인가됨에 따라 제어부(30)에서 압축기(130)와, 팽창밸브(210)와 실외기 송풍기(120)와 실내기 송풍기(220)의 작동을 제어하여 건물 내부를 냉방시키거나 제습시키게 된다.The air conditioner made as described above controls the operation of the compressor 130, the expansion valve 210, the outdoor unit blower 120, and the indoor unit blower 220 in the control unit 30 as power is applied to cool or dehumidify the interior of the building. Let's go.

그러나, 에어컨을 작동시켜 냉방기능 수행시 희망온도에 도달하면 압축기의 온오프를 반복하여 희망온도로 일정하게 유지시키게 되어 압축기의 잦은 온오프로 인하여 내구성이 떨어지게 될 뿐만 아니라 실내온도도 희망온도와 많은 편차를 보이는 문제점이 있다.However, when the air conditioner is operated and the cooling function reaches the desired temperature, the compressor is repeatedly turned on and off and kept at the desired temperature. There is a problem that shows a deviation.

또한, 제습기능 수행시 실내온도가 내려가게 되면 압축기를 오프시키고 실내기 송풍기를 아주 느린 속도로 운전하기 때문에 효과적인 제습기능이 수행되지 않을 뿐만 아니라 실내온도가 너무 내려가는 과냉현상이 발생하는 문제점이 있다.In addition, when the dehumidification function is performed, if the indoor temperature is lowered, the compressor is turned off and the indoor unit blower is operated at a very slow speed, so that the effective dehumidification function is not performed and the room temperature is too low.

본 발명은 상기와 같은 문제점을 해결하기 위해 창작된 것으로서, 본 발명의 목적은 실내기에 열교환기를 두 개 설치하고 각각의 열교환기 입력측에 팽창밸브를 설치하여 독립적으로 팽창밸브를 제어함으로써 실내기의 열교환기에서 냉방과 난방이 동시에 이루어지도록 함으로써 제습기능은 물론 실내가 과냉되는 것을 방지할 수 있도록 한 과냉 방지기능을 갖는 에어컨에 관한 것이다.The present invention has been made to solve the above problems, an object of the present invention is to install two heat exchangers in the indoor unit and to install the expansion valve on each heat exchanger input side to control the expansion valve independently, the heat exchanger of the indoor unit In the cooling and heating at the same time made by the dehumidification function as well as the air conditioning having an anti-cooling function to prevent the room from being overcooled.

도 1은 일반적인 에어컨을 개략적으로 나타낸 블록 구성도이다.1 is a block diagram schematically showing a general air conditioner.

도 2는 본 발명에 의한 과냉 방지기능을 갖는 에어컨을 간략하게 도시한 블록구성도이다.2 is a block diagram schematically showing an air conditioner having an anti-cooling function according to the present invention.

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

10 : 실외기 20 : 실내기10: outdoor unit 20: indoor unit

110 : 응축기 120 : 실외기 송풍기110: condenser 120: outdoor unit blower

130 : 압축기 210 : 팽창밸브130 compressor 210 expansion valve

220 : 실내기 송풍기 230 : 증발기220: indoor unit blower 230: evaporator

300 : 압축기 310 : 실외열교환기300: compressor 310: outdoor heat exchanger

320 : 제 1팽창밸브 325 : 제 2팽창밸브320: first expansion valve 325: second expansion valve

330 : 제 1실내열교환기 335 : 제 2실내열교환기330: first indoor heat exchanger 335: second indoor heat exchanger

340 : 제어부 350 : 실내기 송풍기340 control unit 350 indoor unit blower

상기와 같은 목적을 실현하기 위한 본 발명은 실내외온도를 측정하여 냉각사이클에 의한 냉매의 응축열과 기화열을 이용하여 공기조화를 수행하는 에어컨에 있어서, 냉매를 고온 고압으로 압축시키는 압축기와, 압축기에 의해 압축된 냉매에 함유된 열을 방출하여 액화시키는 실외열교환기와, 실외열교환기에서 보내진 냉매를 개방정도에 따라 저압상태로 만들거나 바이패스시키는 제 1팽창밸브와, 제 1팽창밸브를 통해 출력된 냉매와 열교환을 수행하는 제 1실내열교환기와, 제 1실내열교환기에서 출력된 냉매를 개방정도에 따라 저압상태로 만들거나 바이패스시키는 제 2팽창밸브와, 제 2팽창밸브를 통해 출력된 냉매와 열교환을 수행하고 압축기로보내는 제 2실내열교환기와, 압축기의 작동 및 제 1내지 제 2팽창밸브의 개방정도를 제어하기 위한 제어부를 포함하여 이루어진 것을 특징으로 한다.The present invention for realizing the above object is an air conditioner performing air conditioning using the condensation heat and vaporization heat of the refrigerant by the cooling cycle by measuring the indoor and outdoor temperature, the compressor for compressing the refrigerant to a high temperature and high pressure, by a compressor An outdoor heat exchanger for releasing and liquefying heat contained in the compressed refrigerant, a first expansion valve for lowering or bypassing the refrigerant sent from the outdoor heat exchanger according to the opening degree, and a refrigerant output through the first expansion valve And a first indoor heat exchanger performing heat exchange with a second expansion valve for making or bypassing the refrigerant output from the first indoor heat exchanger in a low pressure state according to the opening degree, and the refrigerant output through the second expansion valve. And a second indoor heat exchanger for carrying out the air flow to the compressor and for controlling the operation of the compressor and the degree of opening of the first to second expansion valves. Characterized in that made in comprising: a.

위와 같이 이루어진 본 발명은 실내의 온도에 따라 제 1팽창밸브와 제 2팽창밸브의 개방정도를 조절함으로써 제 1실내열교환기와 제 2실내열교환기에서 증발작용과 응축작용이 모두 일어나도록 하여 증발열과 응축열을 동시에 발산하게 됨으로써 압축기가 정상적으로 계속 구동되면서도 실내의 과냉을 방지하면서 냉방 및 제습기능을 수행할 수 있게 된다.The present invention made as described above by adjusting the opening degree of the first expansion valve and the second expansion valve according to the temperature of the room so that both the evaporation and condensation action occurs in the first indoor heat exchanger and the second indoor heat exchanger. By simultaneously dissipating it is possible to perform the cooling and dehumidification function while preventing the overcooling of the room while the compressor continues to operate normally.

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 설명한다. 또한 본 실시예는 본 발명의 권리범위를 한정하는 것은 아니고, 단지 예시로 제시된 것이다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. In addition, this embodiment is not intended to limit the scope of the present invention, but is presented by way of example only.

도 2는 본 발명에 의한 과냉 방지기능을 갖는 에어컨을 간략하게 도시한 블록구성도이다.2 is a block diagram schematically showing an air conditioner having an anti-cooling function according to the present invention.

여기에 도시된 바와 같이 에어컨의 냉각사이클을 일부 변경하여 실내에서 응축열과 증발열을 동시에 발산할 수 있도록 구성하였다.As shown here, a part of the cooling cycle of the air conditioner was changed so that the heat of condensation and the evaporation of heat could be simultaneously dissipated in the room.

즉, 냉매를 고온 고압으로 압축시키는 압축기(300)와, 압축기(300)에 의해 압축된 냉매에 함유된 열을 방출하여 액화시키는 실외열교환기(310)와, 실외열교환기(310)에서 보내진 냉매를 개방정도에 따라 저압상태로 만들거나 바이패스시키는 제 1팽창밸브(320)와, 제 1팽창밸브(320)를 통해 출력된 냉매와 열교환을 수행하는 제 1실내열교환기(330)와, 제 1실내열교환기(330)에서 출력된 냉매를 개방정도에따라 저압상태로 만들거나 바이패스시키는 제 2팽창밸브(325)와, 제 2팽창밸브(325)를 통해 출력된 냉매와 열교환을 수행하고 압축기로 보내는 제 2실내열교환기(330)와, 압축기(300)의 작동 및 제 1내지 제 2팽창밸브(320,325)의 개방정도를 제어하기 위한 제어부(340)로 이루어진다.That is, the compressor 300 compresses the refrigerant at high temperature and high pressure, the outdoor heat exchanger 310 releasing and liquefying heat contained in the refrigerant compressed by the compressor 300, and the refrigerant sent from the outdoor heat exchanger 310. A first expansion valve (320) for making or bypassing the low pressure state according to the opening degree, a first indoor heat exchanger (330) for performing heat exchange with a refrigerant output through the first expansion valve (320), and The second expansion valve 325 for making or bypassing the refrigerant output from the first indoor heat exchanger 330 according to the degree of opening and heat exchange with the refrigerant output through the second expansion valve 325. The second chamber heat exchanger 330 sent to the compressor, and the control unit 340 for controlling the operation of the compressor 300 and the opening degree of the first to second expansion valve (320,325).

이때, 제 1실내열교환기(330)와 제 2실내열교환기(335)는 실내기 내에 설치되어 실내기 송풍기(350)에 의해 실내로 송풍할 수 있도록 한다.At this time, the first indoor heat exchanger 330 and the second indoor heat exchanger 335 are installed in the indoor unit so as to be blown into the room by the indoor unit blower 350.

위와 같이 이루어진 본 발명의 작동을 설명하면 다음과 같다.Referring to the operation of the present invention made as described above are as follows.

먼저, 일반적인 냉방기능으로써 실내온도가 희망온도보다 높을 경우 제 1팽창밸브(320)를 닫아 팽창기 역할을 수행하도록 하고 제 2팽창밸브(325)를 완전히 개방하여 바이패스되도록 함으로써 실외열교환기(310)에서 응축된 냉매가 제 1팽창밸브(320)를 통과하면서 감압팽창되어 제 1실내열교환기(330)와 제 2실내열교환기(335)에서 증발되면서 차가운 증발열을 발산하게 된다. 그러면 실내기 송풍기(350)에 의해 실내로 송풍되어 실내를 냉방시키고 제습시키게 된다.First, as a general cooling function, when the indoor temperature is higher than the desired temperature, the first expansion valve 320 is closed to serve as an inflator, and the second expansion valve 325 is completely opened to bypass the outdoor heat exchanger 310. The refrigerant condensed at is expanded under reduced pressure while passing through the first expansion valve 320 to evaporate in the first indoor heat exchanger 330 and the second indoor heat exchanger 335 to emit cold evaporative heat. Then it is blown into the room by the indoor unit blower 350 to cool and dehumidify the room.

이와 같이 냉방기능을 수행하여 실내온도가 희망온도와 비슷해지면 제 1팽창밸브(320)를 완전히 개방하여 바이패스되도록 하고, 제 2팽창밸브(325)를 닫아 팽창기 역할을 하도록 한다. 그러면, 압축기(300)에서 토출된 냉매를 실외열교환기(310)에서 응축됨과 아울러 제 1실내열교환기(330)에서도 응축작용이 일어나기 때문에 제 1실내열교환기(330)에서 더운 응축열을 발산하게 된다.As such, when the indoor temperature becomes close to the desired temperature by performing the cooling function, the first expansion valve 320 is completely opened to bypass, and the second expansion valve 325 is closed to serve as an inflator. Then, since the refrigerant discharged from the compressor 300 is condensed in the outdoor heat exchanger 310 and condensation occurs in the first indoor heat exchanger 330, the first indoor heat exchanger 330 dissipates hot condensation heat. .

한편, 제 2팽창밸브(325)에 의해 감압팽창된 냉매는 제 2실내열교환기(335)에서 증발되면서 차가운 증발열을 발산하게 된다.On the other hand, the refrigerant expanded under reduced pressure by the second expansion valve 325 is evaporated in the second indoor heat exchanger (335) will emit the heat of cold evaporation.

따라서, 실내기에서 발산되는 열기는 더운 응축열과 차가운 증발열로써 실질적으로 실내로 발산되는 바람의 온도는 희망온도와 거의 동일한 온도의 바람이 송풍되기 때문에 설정된 희망온도에서 과냉되지 않으면서도 제습작용을 수행하게 된다.Therefore, the heat emitted from the indoor unit is a hot condensation heat and a cold evaporation heat, so that the temperature of the wind emitted into the room is blown at a temperature substantially equal to the desired temperature, so that dehumidification is performed without being supercooled at the set desired temperature. .

이와 같이 제 1팽창밸브(320)와 제 2팽창밸브(325)의 개방정도를 제어부(340)에서 미세하게 조절함에 따라 팽창기로써 역할을 수행하거나 바이패스 역할을 수행하게 되어 실내기에 설치된 제 1실내열교환기(330)와 제 2실내열교환기(335)가 제 1팽창밸브(320)와 제 2팽창밸브(325)의 개방정도에 따라 차가운 증발열을 발산량과 더운 응축열을 발산량을 조절하여 압축기(300)가 계속 구동되면서도 실내를 과냉시키지 않고 설정된 희망온도를 유지하면서 제습작용을 지속적으로 수행할 수 있게 된다.As described above, the opening degree of the first expansion valve 320 and the second expansion valve 325 is finely controlled by the control unit 340 to serve as an inflator or to bypass the first expansion valve. The heat exchanger 330 and the second indoor heat exchanger 335 adjust the amount of cooling evaporation heat and the amount of hot condensation heat according to the opening degree of the first expansion valve 320 and the second expansion valve 325. ) Will continue to run, but the dehumidification can be continued while maintaining the desired temperature without overcooling the room.

상기한 바와 같이 본 발명은 실내기에 열교환기를 두 개 설치하고 각각의 열교환기 입력측에 팽창밸브를 설치하여 독립적으로 팽창밸브를 제어함으로써 실내기에 설치된 두 개의 열교환기에서 냉방과 난방이 동시에 이루어지도록 함으로써 압축기의 잦은 온오프없이 냉방 및 제습기능 수행시 실내의 과냉을 방지하고 효과적인 제습기능을 수행할 수 있는 이점이 있다.As described above, the present invention installs two heat exchangers in the indoor unit and installs expansion valves on each heat exchanger input side to control the expansion valve independently so that cooling and heating are simultaneously performed in two heat exchangers installed in the indoor unit. When the cooling and dehumidification function is performed without frequent on and off, there is an advantage to prevent the overcooling of the room and perform an effective dehumidification function.

또한, 압축기의 잦은 온오프를 방지하여 압축기의 수명을 연장시킬 수 있는 이점이 있다.In addition, there is an advantage that can prevent the frequent on-off of the compressor to extend the life of the compressor.

Claims (1)

실내외온도를 측정하여 냉각사이클에 의한 냉매의 응축열과 기화열을 이용하여 공기조화를 수행하는 에어컨에 있어서,In the air conditioner to measure the indoor and outdoor temperature to perform air conditioning using the heat of condensation and vaporization of the refrigerant by the cooling cycle, 냉매를 고온 고압으로 압축시키는 압축기와,A compressor for compressing the refrigerant to high temperature and high pressure; 상기 압축기에 의해 압축된 냉매에 함유된 열을 방출하여 액화시키는 실외열교환기와,An outdoor heat exchanger for liquefying by releasing heat contained in the refrigerant compressed by the compressor; 상기 실외열교환기에서 보내진 냉매를 개방정도에 따라 저압상태로 만들거나 바이패스시키는 제 1팽창밸브와,A first expansion valve for making or bypassing the refrigerant sent from the outdoor heat exchanger to a low pressure state according to the degree of opening; 상기 제 1팽창밸브를 통해 출력된 냉매와 열교환을 수행하는 제 1실내열교환기와,A first indoor heat exchanger configured to perform heat exchange with the refrigerant outputted through the first expansion valve; 상기 제 1실내열교환기에서 출력된 냉매를 개방정도에 따라 저압상태로 만들거나 바이패스시키는 제 2팽창밸브와,A second expansion valve for making or bypassing the refrigerant output from the first indoor heat exchanger in a low pressure state according to the degree of opening; 상기 제 2팽창밸브를 통해 출력된 냉매와 열교환을 수행하고 상기 압축기로 보내는 제 2실내열교환기와,A second indoor heat exchanger performing heat exchange with the refrigerant output through the second expansion valve and sending it to the compressor; 상기 제 1팽창밸브을 닫고 상기 제 2팽창밸브를 개방하여 상기 제 1내지 제 2실내열교환기에서 증발열을 발생되도록 하며 상기 제 1팽창밸브를 개방하고 상기 제 2팽창밸브를 닫아 상기 제 1실내열교환기에서 응축열이 상기 제 2실내열교환기에서 증발열이 각각 발생하도록 상기 제 1내지 제 2팽창밸브의 개방정도 및 상기 압축기의 작동을 제어하여 설정된 실내온도를 유지하도록 하는 제어부Close the first expansion valve and open the second expansion valve to generate heat of evaporation in the first to second indoor heat exchanger, open the first expansion valve and close the second expansion valve to close the first indoor heat exchanger. Control unit for controlling the opening degree of the first to second expansion valve and the operation of the compressor to maintain the set room temperature so that the heat of condensation in the second chamber heat exchanger at 를 포함하여 이루어진 것을 특징으로 하는 과냉 방지기능을 갖는 에어컨.Air conditioner with a supercooling prevention function, characterized in that consisting of.
KR10-2001-0033005A 2001-06-12 2001-06-12 Air-conditioner have a facility for protecting over cooling KR100424103B1 (en)

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CN02123043A CN1391068A (en) 2001-06-12 2002-06-12 Air conditioner with function against overcooling

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5625644A (en) * 1979-08-08 1981-03-12 Hitachi Ltd Refrigerating cycle of air conditioner with icebox
KR980003339A (en) * 1996-06-01 1998-03-30 문정환 Expansion valve of chiller

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5625644A (en) * 1979-08-08 1981-03-12 Hitachi Ltd Refrigerating cycle of air conditioner with icebox
KR980003339A (en) * 1996-06-01 1998-03-30 문정환 Expansion valve of chiller

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