KR100423362B1 - Air conditioner - Google Patents
Air conditioner Download PDFInfo
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- KR100423362B1 KR100423362B1 KR1019960014611A KR19960014611A KR100423362B1 KR 100423362 B1 KR100423362 B1 KR 100423362B1 KR 1019960014611 A KR1019960014611 A KR 1019960014611A KR 19960014611 A KR19960014611 A KR 19960014611A KR 100423362 B1 KR100423362 B1 KR 100423362B1
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- compressor
- refrigerant
- pipe
- valve
- load
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Classifications
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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
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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
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/26—Disposition of valves, e.g. of on-off valves or flow control valves of fluid flow reversing valves
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/50—Load
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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
- F25B2600/2501—Bypass valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Air Conditioning Control Device (AREA)
Abstract
1. 청구범위애 기재된 발명이 속한 기술분야1. Description of the invention
복수의 실내열교환기를 구비한, 소위 멀티형 에어콘이라 부르고 있는 공기조화기에 관한 것이다.The present invention relates to an air conditioner having a plurality of indoor heat exchangers, which is called a so-called multi-type air conditioner.
2. 발명이 해결하려고 하는 기술적과제2. Technical Challenges to be Solved by the Invention
고부하와 저부하에 대응할 수 있는 저렴한 공기조화기를 제공하는 것이다.And an inexpensive air conditioner capable of coping with high load and low load.
3. 발명의 혜결방법의 요지3. The essence of the inventive method
냉매의 일부를 공회전시키기위한 제1바이패스관(22)을 설치함과 동시에, 이사이에 제1개폐밸브(23)와 제1캐펄레리튜브(24)를 설치하고, 냉매액의 일부를 압축기(6)의 흡입측으로 도입하는 제2바이패스관(25)을 설치함과 동시에, 이 관에 제2개폐밸브(26)와 제2캐펄레리튜브(27)을 설치했기때문에, 공조부하 및 외기부하가 큰경우에는 상기 제1개폐밸브(23)를 열어서, 냉매의 온도상승을 방지하고, 공조부하가 작은경우에는 제2개폐밸브(26)을 열어서 냉매의 일부를 압축기(6)의 흡입측으로 도입하는 것이다.A first bypass pipe 22 for idling a part of the refrigerant and a first opening and closing valve 23 and a first capillary tube 24 are installed in the moving part and a part of the refrigerant liquid is supplied to a compressor 6 and the second capillary tube 27 are provided in the pipe, the air conditioning load and the outside air load (load) The second on-off valve 26 is opened to introduce a part of the refrigerant to the suction side of the compressor 6 when the air conditioning load is small, .
4. 발명의 중요한 용도4. Important Uses of the Invention
냉매의 순환량을 조절할 수 있을 뿐만 아니라 능력가변형 압축기나 개도를 조절할 수 있는 밸브등 고가의 부품을 사용하고 있지 않기때문에 공기조화기를 저렴하게 할 수 있다.It is possible not only to control the circulation amount of the refrigerant but also to use an expensive compressor such as a variable capacity compressor or a valve capable of controlling opening degree, so that the air conditioner can be made inexpensive.
Description
본 발명은 복수의 실내열교환기를 구비한, 소위 멀티형 에어콘이라 부르고 있는 공기조화기에 관한 것이다.The present invention relates to an air conditioner called a so-called multi-type air conditioner having a plurality of indoor heat exchangers.
종래, 실내를 냉방하는 공기조화기의 한예는, 예를들면 일본국 특공소 50-34343호공보에 기재되어 있다. 이와 같은 공기조화기는, 압축기와 실외열교환기와 감압장치와 실내열교환기를 냉매관으로 접속해서 구성한 냉동사이클을 구비한 것이다.Description of the Related Art [0002] Conventionally, an example of an air conditioner for cooling the room is disclosed in, for example, Japanese Patent Laid-Open Publication No. 50-34343. Such an air conditioner is provided with a refrigeration cycle in which a compressor, an outdoor heat exchanger, a decompression device, and an indoor heat exchanger are connected by a refrigerant pipe.
상술한 공기조화기에서는 실내열교환기를 복수, 예를들면 2개를 병렬로 구비한 것이고, 이와 같은 공기조화기는 소위 멀티형 에어콘이라 부르고 있다.이와 같은 공기조화기에 있어서는 실내열교환기를 하나밖에 이용하지 않은 경우(저부하)와, 두개 모두 이용하고 있는 경우(고부하)로, 냉매의 순환량이 다르기때문에 냉매의 순환량을 제어하는 구성, 예를들면 리시버탱크를 설치하지 않으면 안된다. 또 실외공기의 온도가 높은 경우와 같이 부하가 큰경우에도 대응할 수 있도록 하지 않으면, 공기조화기의 보호장치가 동작해서 공기조화기의 운전이 도중에 정지해 버릴 염려가 있다. 그러나, 가격을 저렴하게 하기위해 일정속도로 구동되는 압축기를 사용한 경우에는 압축기의 구동속도를 제어할 수 없기때문에 상기 저부하와 고부하에 대응할 수 있도록 구성하는데에는 많은 어려움이 있다.In the above air conditioner, a plurality of, for example, two indoor heat exchangers are provided in parallel, and such an air conditioner is called a so-called multi-type air conditioner. In such an air conditioner, (Low load), and when both of them are used (high load), the amount of circulation of the refrigerant differs, so that a configuration for controlling the amount of circulation of the refrigerant, for example, a receiver tank must be provided. In addition, if it is not possible to cope with a case where the outdoor air is at a high temperature, such as when the temperature of the outdoor air is high, the protective device of the air conditioner may operate and the operation of the air conditioner may be interrupted. However, when a compressor driven at a constant speed is used to reduce the price, the driving speed of the compressor can not be controlled. Therefore, it is difficult to configure the compressor so as to be able to cope with the low load and the high load.
따라서, 본 발명은 고부하와 저부하에 대응할 수 있는 저렴한 공기조화기를 제공하는 것을 목적으로 한다Therefore, it is an object of the present invention to provide an inexpensive air conditioner capable of coping with a high load and a low load
상기 목적을 달성하기위해, 제1발명은 일정속도로 운전되는 압축기와 실외열교환기와 감압장치와 병렬로 배치된 복수의 실내열교환기를 냉매관으로 접속한 공기조화기에 있어서, 상기 실외열교환기의 출구측관과 상기 압축기의 흡입측관을 제1바이패스관으로 연결함과 동시에, 이 관에는 제1개폐밸브와 제1감압기를 설치하고, 상기 압축기의 토출측관과 상기 압축기의 흡입측관을 제2바이패스관으로 연결함과 동시에, 이 관에는 제2개폐밸브와 제2감압기를 설치하되, 공조부하 및 외기부하가 큰경우에는 상기 제1개폐밸브를 여는 동시에, 제2개폐밸브를 닫힌채로하고, 공조부하가 작은경우에는 상기 제1개폐밸브를 닫힌채로하는 동시에, 상기 제2개폐밸브를 여는 제어장치를 구비한 것이다.In order to achieve the above object, a first aspect of the present invention is an air conditioner in which a compressor operated at a constant speed, a plurality of indoor heat exchangers arranged in parallel with an outdoor heat exchanger and a decompression device are connected by a refrigerant pipe, Closing valve and the first pressure reducing valve are provided in the pipe, and the suction side pipe of the compressor and the suction side pipe of the compressor are connected to the second bypass pipe Closing valve and the second pressure reducing valve are provided in the pipe, and when the air conditioning load and the outside air load are large, the first opening / closing valve is opened and the second opening / closing valve is closed, Closing valve is closed and the second opening / closing valve is opened when the first opening / closing valve is small.
제2발명에 있어서는 제1발명에 있어서의 제1,제2감압장치를 제1,제2캐펄레리튜브로 구성한 것이다.In the second invention, the first and second decompression devices in the first invention are constituted by first and second capillary tubes.
제3발명은 일정속도로 운전되는 압축기와 실외열교환기와 감압장치와 병렬로 배치된 복수의 실내열교환기를 냉매관으로 접속하고, 각각의 열교환기에의 냉매의 흐름을 정지시키기위한 각각의 전환밸브 및 실외공기의 온도를 검지하는 외기온도검지를 구비한 공기조화기예 있어서,상기 실외열교환기의 출구측관과 상기 압축기의 흡입측관을 제1바이패스관으로 연결함과 동시에, 이 관에는 제1개폐밸브와 제1감압기를 설치하고, 상기 압축기의 토출측관과 상기 압축기의 흡입측관을 제2바이패스관으로 연결함과 동시에, 이 관에는 제2개폐밸브와 제2감압기를 설치하고, 상기 전환밸브가 모두 열려있고, 또 상기 외기온도검지기의 검지한 온도가 소정온도보다 높은경우에는 상기 제1개폐밸브를 여는 동시에, 상기 제2개폐밸브를 닫힌채로하고, 상기 제어밸브중 닫혀있는 것이 있는 경우에는 상기 제1개폐밸브를 닫힌채로하는 동시에, 상기 제2개폐밸브를 여는 제어장치를 구비한 것이다.A third aspect of the present invention is a refrigerating apparatus comprising a compressor, a plurality of indoor heat exchangers arranged in parallel with an outdoor heat exchanger and a decompression device, and a plurality of indoor heat exchangers connected to the indoor heat exchanger through a refrigerant pipe for stopping the flow of refrigerant to the respective heat exchangers, And a second bypass pipe for connecting the outlet side pipe of the outdoor heat exchanger and the suction side pipe of the compressor, wherein the first opening / closing valve and the second opening / closing valve are connected to the outdoor heat exchanger, A first pressure reducing device is provided, a discharge side pipe of the compressor and a suction side pipe of the compressor are connected by a second bypass pipe, and a second opening / closing valve and a second pressure reducing device are provided in the pipe, And when the detected temperature of the outdoor temperature probe is higher than a predetermined temperature, the first opening / closing valve is opened and the second opening / closing valve is kept closed, And when the valve is closed, the first on-off valve is kept closed and the second on-off valve is opened.
상기 구성에 따른 작용을 설명하면 다음과 같다.The operation according to the above configuration will be described as follows.
제1, 제2발명에 의하면, 공조부하 및 외기부하가 큰경우에는 제1개폐밸브가 열려서 액냉매가 압축기의 흡입측관에 도입되기때문에, 이 흡입측관 및 냉매가 액냉매의 증발에 의해 냉각되어서 냉매의 온도상승이 방지된다. 또 공기부하가 작은경우에는 냉매가 남아있기때문에 이 남은 냉매가 실외열교환기를 통과하지 않고 압축기에 도입되기때문에 이용되는 실외열교환기로 흐르는 냉매가 과잉이 되지 않도록 제한되어서 냉매의 순환량이 조절된다.According to the first and second aspects of the present invention, when the air conditioning load and the outside air load are large, the first opening / closing valve is opened so that the liquid refrigerant is introduced into the suction side pipe of the compressor, and the suction side pipe and the refrigerant are cooled by evaporation of the liquid refrigerant The temperature rise of the refrigerant is prevented. If the air load is small, the remaining refrigerant is introduced into the compressor without passing through the outdoor heat exchanger, so that the refrigerant flowing into the outdoor heat exchanger to be used is restricted so as not to be excessive, so that the circulation amount of the refrigerant is regulated.
특히, 제2발명에 있어서는 제1발명의 제1, 제2감압장치로서 캐펄레리튜브를 이용하고 있기때문에 제1,제2바이패스관의 저항을 조절하기 쉽고, 또한 감압장치를 저렴하게 구성할 수 있다.Particularly, in the second invention, since the capillary tube is used as the first and second decompression devices of the first invention, the resistance of the first and second bypass pipes can be easily adjusted and the decompression device can be configured inexpensively .
제3발명에 의하면, 전환밸브가 모두 열려서 공조부하가 크고, 또한 외기온도가 소정온도이상으로 외기온도부하가 큰경우에는 제1, 제2발명과 같이 제1 개폐밸브가 열리기때문에, 냉매의 온도상승이 방지된다. 또 전환밸브중 닫혀있는 것이 있어 냉매가 흐르지 않는 실내열교환기가 있어서 공조부하가 작은경우에는 제1, 제2발명과 같이 제2개폐밸브가 열려서 냉매 냉매의 순환량이 조절된다.According to the third invention, when the air conditioning load is large due to all of the switching valves being opened and the outside air temperature is higher than the predetermined temperature and the outside air temperature load is large, the first opening / closing valve is opened as in the first and second inventions, The rise is prevented. Further, when the air conditioning load is small due to the presence of the indoor heat exchanger in which the switching valve is closed and the refrigerant does not flow, the second opening / closing valve is opened as in the first and second inventions so that the circulation amount of the refrigerant refrigerant is regulated.
본 발명의 실시예를 첨부도면에 의거하여 상세히 설명한다.Embodiments of the present invention will be described in detail with reference to the accompanying drawings.
(1)은 분리형 공기조화기로,주로 실외기(2)와,유니트간 배관(3),서로 다른 실에 배치되는 실내기(4)(5)로 구성되어 있다. 또 본 공기조화기는 실내기를 복수개 구비하고 있기때문에 멀티형 에어콘이라 한다.(1) is a separate type air conditioner mainly composed of an outdoor unit (2), a unit piping (3), and indoor units (4) and (5) arranged in different rooms. Since the present air conditioner is provided with a plurality of indoor units, it is referred to as a multi-type air conditioner.
실외기(2)에는 냉매를 압축하기위한 압축기(6), 실외열교환기(7), 캐펄레리튜브를 사용한 감압장치(8), 개폐밸브를 사용한 전환밸브(9),(10), 머플러(11),(12), 캐펄레리튜브를 사용한 보조감압장치(13),(14), 서비스밸브(15),(16), 서비스밸브(17),(18), 머플러(19), 어큐뮬레이터(20)이 수납되어 있다. (21A), (21B), (21C), (21D), (21E), (21F), (21G), (21H), (21I)는 이들 기기를 접속하기 위한 냉매관이다. (22)는 냉매관(21B)와 냉매관(21I)을 연결하는 제1바이패스관으로, 그 도중에 제1개폐밸브(23)과 캐펄레리튜브(제1감압기)(24)와가 설치되어 있다. (25)는 제2바이패스관으로, 그 도중에는 제2개폐밸브(26)과 캐펄레리튜브(제2감압기)(27)가 설치되어 있다. (28)은 제어장치로, 제1,제2개폐밸브(23),(25)를 제어하는 것이다. 또 이 제어장치(28)은 실내기의 제어장치(도시생략)로부터의 신호접수에 의해 실외기의 각 기기를 제어하는 것이다.(29)는 실외열교환기의 흡입측에 배치되어 있고, 이 열교환기의 흡입측의 공기온도(실외공기의 온도, 소위 외기온도)를 검지하기위한 것이다.The outdoor unit 2 is provided with a compressor 6 for compressing refrigerant, an outdoor heat exchanger 7, a pressure reducing device 8 using a capillary tube, switching valves 9 and 10 using an opening / closing valve, a muffler 11 The auxiliary pressure reducing devices 13 and 14 using the capillary tube, the service valves 15 and 16, the service valves 17 and 18, the muffler 19, the accumulator 20 . The refrigerant tubes 21A, 21B, 21C, 21D, 21E, 21F, 21G, 21H and 21I are refrigerant tubes for connecting these devices. (22) is a first bypass pipe connecting the refrigerant pipe (21B) and the refrigerant pipe (21I), and a first opening / closing valve (23) and a capillary tube (first pressure reducing device) have. (25) is a second bypass pipe, and a second opening / closing valve (26) and a capillary tube (second pressure reducing device) (27) are provided in the middle thereof. (28) is a control device for controlling the first and second open / close valves (23, 25). The control device 28 controls each device of the outdoor unit by receiving a signal from a control device (not shown) of the indoor unit. (29) is disposed on the suction side of the outdoor heat exchanger, (The temperature of the outdoor air, the so-called outside temperature) of the suction side.
또한, 실외기(2)에는 실외열교환기(7)에 실외공기를 도입하기위한 송풍기를 구비하고 있으나, 도시하지 않았다. 또 실내기(4),(5)에도 실내열교환기에 실내공기를 도입하기위한 송풍기를 구비하고 있으나, 도시하지 않았다.The outdoor unit 2 is provided with a blower for introducing outdoor air to the outdoor heat exchanger 7, but is not shown. The indoor units (4) and (5) are also provided with a blower for introducing indoor air into the indoor heat exchanger, but they are not shown.
실내기(4)에는 실내열교환기(30), 보조냉매관(31),(32), 접속구(33),(34)를 구비하고 있다. 마찬가지로 실내기(5)에는 실내열교환기(35), 보조냉매관(36),(37), 접속부(38),(39)를 구비하고 있다.The indoor unit 4 is provided with an indoor heat exchanger 30, auxiliary refrigerant pipes 31 and 32, and connection ports 33 and 34. Similarly, the indoor unit 5 is provided with the indoor heat exchanger 35, the auxiliary refrigerant pipes 36 and 37, and the connecting portions 38 and 39.
유니트간 배관(3)은 관(40),(41),(42),(43)으로 구성되어 있고, 관(42),(43)은 관(40),(41)보다 약간 굵은 관을 사용하고 있다.The piping 3 between the units is composed of the pipes 40, 41, 42 and 43 and the pipes 42 and 43 are pipes which are slightly thicker than the pipes 40 and 41 I am using it.
또, 실외의 제어장치(29)과 실내의 제어장치(도시생략)와는 유니트관 케이블로 속되어 있으나, 도시하지 않았다.The outdoor control device 29 and the indoor control device (not shown) are included in the unit pipe cable, but are not shown.
상기 제어장치(28)은 공조부하가 큰때(예를들면, 전환밸브9,10이 열려있을 때), 또한 외기부하가 큰때(예를들면, 외기온도가39℃이상인 때)에는 제1개폐밸브(23)를 여는 동시에, 제2개폐밸브(26)을 닫힌채로하는 것이다. 또 이 제어장치(28)은 공조부하가 작은때(예를들면, 실내열교환기30,35중 이용되고 있지 않은 열교환기가 있을 때, 즉 전환밸브(9),(10)중 하나가 열려있을 때), 제 2개폐밸브(26)을 여는 동시에 제1개폐밸브(23)을 닫힌채로 하는 것이다.When the air conditioning load is large (for example, when the switching valves 9 and 10 are open) and when the outside air load is large (for example, when the outside air temperature is 39 ° C or more) (23) is opened and the second on-off valve (26) is kept closed. When the air conditioning load is small (for example, when there is a heat exchanger not in use among the indoor heat exchangers 30 and 35, that is, when one of the switching valves 9 and 10 is opened , The second on-off valve 26 is opened while the first on-off valve 23 is closed.
또 본 공기조화기에서는 관(40),(41),(42),(43)의 길이가 긴경우라도, 추가로 냉매를 보충하지 않아도 괜찮도록 냉매가 많이 들어 있다. 예를들면, 관(40)과, 관(41)과의 길이의 합계가 30m까지, 혹은 관(40) 또는 관(41)의 길이가 20m까지는 추가냉매충전을 행하지 않아도 좋도록 냉매가 충전되어 있다.Further, in this air conditioner, even if the lengths of the pipes 40, 41, 42, and 43 are long, a large amount of refrigerant is contained so that the refrigerant need not be supplemented. For example, when the total length of the pipe 40 and the pipe 41 is 30 m, or when the length of the pipe 40 or the pipe 41 is 20 m, the refrigerant is charged so as not to perform additional refrigerant charging have.
또한, 본 공기조화기에서는 쓰고 남은 냉매를 저장하는 리시버탱크는 구비되어 있지 않다. 이때문예, 실외열교환기(7)을 다소 큰 열교환기로 구성해서 쓰고 남은 냉매가 저장될 수 있도록 되어 있다. 또 캐펄레리튜브(24),(27)은 냉매의 순환량을 조절하기위한 것이고, 또한 압력차를 유지하기위한 것이다.In this air conditioner, there is not provided a receiver tank for storing the refrigerant remaining after use. In this case, the outdoor heat exchanger 7 is constructed as a rather large heat exchanger, and the remaining refrigerant can be stored. The capillary tubes 24 and 27 are for regulating the amount of circulation of the refrigerant and also for maintaining the pressure difference.
이와 같이 구성된 공기조화기(1)에서는 냉방운전은 가능하지만, 4방향밸브를 구비하고 있지 않기때문에 난방운전은 할 수 없다.In the air conditioner 1 configured as described above, cooling operation is possible, but heating operation can not be performed because the four-way valve is not provided.
실내기의 한쪽이 사용되고 있을 때 예를들면 실내기(4)만이 사용되고 있을때는 제어장치에 의하여, 제어밸브(10)이 열리고, 제어밸브(9)가 닫혀있다. 또 개폐밸브(23)이 닫혀지고 개폐밸브(26)이 열려있다. 이와 같은 밸브의 상태에서 압축기(6)이 운전되면, 냉매는 그 약70-80%가 실외열교환기(7)로 흘러, 캐펄레리튜브(8),(14)에서 감압되어 실내열교환기(30)으로 흘러들어가고, 이 냉매에 의해서 실내공기의 열이 빼앗겨 실내가 냉방된다. 또, 냉매의 약 20-30%가 제2바이패스관(25)을 통하여 냉매관(21I)으로 흐른다.이와 같이 실내열교환기가 하나밖에 이용되고 있지 않은 때에는 (저부하인때에는), 냉매의 일부를 이용하지 않고, 공회전시키고 있기 때문에 이 저부하의 운전에 걸맞는 냉매량으로 조절된다. 따라서, 실내열교환기가 동결하지 않도록 되어있다.When one of the indoor units is being used, for example, when only the indoor unit 4 is being used, the control valve 10 is opened and the control valve 9 is closed by the control unit. The on-off valve 23 is closed and the on-off valve 26 is open. When the compressor 6 is operated in the state of such a valve, about 70-80% of the refrigerant flows to the outdoor heat exchanger 7 and is depressurized by the capillary tubes 8 and 14 to be supplied to the indoor heat exchanger 30 And the indoor air is cooled by the heat of the indoor air being taken up by the refrigerant. Further, about 20-30% of the refrigerant flows into the refrigerant pipe 21I through the second bypass pipe 25. When only one indoor heat exchanger is used (low load), a part of the refrigerant And is idling, it is adjusted to the amount of refrigerant suitable for this low load operation. Therefore, the indoor heat exchanger is not frozen.
또, 양쪽의 실내기(4),(5)가 사용되고 있는 경우에는 밸브(9),(10)은 열리고, 개폐밸브(23),(26)은 닫혀진상태로 압축기(6)이 운전된다. 압축기(6)이 운전되면, 압축기(6)으로부터 토출된 냉매는 실내열교환기(7)을 통과한 후 관(21D),(21E)로 나뉘어, 각각 실내열교환기(35),(30)으로 흘러서 실내를 냉방한다.When both the indoor units 4 and 5 are used, the valves 9 and 10 are opened and the compressor 6 is operated in a state where the open / close valves 23 and 26 are closed. When the compressor 6 is operated, the refrigerant discharged from the compressor 6 is divided into the tubes 21D and 21E after passing through the indoor heat exchanger 7, and the refrigerant is discharged to the indoor heat exchangers 35 and 30 Flows to cool the room.
이와 같이 실내기(4),(5)가 2대운전되고 있는 상태에서,외기온도가 상승하고, 이 외기온도가 39℃(소정의 온도)이상으로 되면 제어장치(28)은 고부하인 것으로 판단해서 개폐밸브(23)을 연다. 개폐밸브(23)이 열리면 압축기(6)으로부터 액냉매의 일부(약5%)가 관(21I)로 도입된다. 관(21I)로 도입된 액냉매는 증발해서, 이 관(21I)를 냉각한다(약5%의 냉매량에서는 약 8℃온도를 내릴 수 있다.)이 냉각에 수반하여 흡입측의 냉매도 냉각된다. 액냉매의 일부가 관(21I)으로 도입되면, 실내열교환기의 냉각능력이 조금 저하하기는 하지만, 운전을 정지시키는 보호장치, 예를들면, 열교환기의 온도가 110℃이상으로 되면, 운전을 정지시키는 오버로드릴레이(도시생략)가 동작하는 것을 억제하기때문에, 냉방운전이 불연속적으로 되는 불쾌감을 방지하면서, 운전을 계속할수 있다. 따라서, 여름의 더운날이라도 냉방운전을 정지시키지 않고 운전을 계속할 수 있다.When the outside air temperature rises up to 39 占 폚 (predetermined temperature) in a state where two indoor units 4 and 5 are in operation, the controller 28 judges that the indoor unit 4 and 5 are at a high load The opening / closing valve 23 is opened. When the opening / closing valve 23 is opened, a part (about 5%) of the liquid refrigerant is introduced into the pipe 21I from the compressor 6. The liquid refrigerant introduced into the pipe 21I evaporates and cools the pipe 21I (when the refrigerant amount is about 5%, the temperature can be lowered by about 8 DEG C.) With this cooling, the refrigerant on the suction side is also cooled . When a part of the liquid refrigerant is introduced into the pipe 21I, the cooling capacity of the indoor heat exchanger is slightly lowered. However, when the temperature of the protecting device for stopping the operation, for example, The operation of the overload relay (not shown) for stopping the cooling operation is inhibited, so that the operation can be continued while preventing the discomfort that the cooling operation becomes discontinuous. Therefore, the operation can be continued without stopping cooling operation even on a hot day in summer.
게다가 본 공기조화기는 능력가변형 압축기나 개도(開度)를 조절할 수 있는 밸브등 고가의 부품을 사용하고 있지 않기 때문에, 공기조화기를 저렴하게 할 수 있다.Furthermore, since the air conditioner does not use expensive components such as a capacity variable type compressor or a valve capable of controlling opening degree, the air conditioner can be made inexpensive.
제1,제2, 제3발명에 의하면, 공조부하가 크고, 또한 외기부하가 큰경우에는 제1개폐밸브가 열려서 압축기의 흡입측관 및 냉매가 액냉매의 증발에 의해 냉각되어서, 냉매의 온도의 상승이 방지되고, 또 공조부하가 작은경우에는 제2개폐밸브가 열려서 냉매의 일부가 실외열교환기를 통과시키지 않고 압축기에 도입되기때문에 냉매의 순환량이 조절된다. 게다가 본 공기조화기에서는 능력가변형 압축기나 개도를 조절할 수 있는 밸브등 고가의 부품을 사용하고 있지 않기때문에 공기조화기를 저렴하게 할 수 있고, 고부하시도 저부하시에도 대응가능하게 할 수 있다.According to the first, second, and third aspects of the invention, when the air conditioning load is large and the outside air load is large, the first on-off valve is opened so that the suction side tube and the refrigerant of the compressor are cooled by evaporation of the liquid refrigerant, When the air conditioning load is small, the second opening / closing valve is opened and a part of the refrigerant is introduced into the compressor without passing through the outdoor heat exchanger, so that the amount of circulation of the refrigerant is regulated. In addition, since the expensive air conditioner does not use expensive variable components such as a variable capacity compressor or a valve capable of controlling the opening degree, the air conditioner can be made inexpensive, and it is possible to cope with a load of high load.
특히, 제2도의 발명에 있어서는 제1,제2감압장치로서 캐펄레리튜브를 사용하고 있기때문에 제1,제2바이패스관의 저항을 조절하기 쉽고, 또한 감압장치를 저렴하게 구성할 수 있기때문에 공기조화기를 저렴하게 할 수 있고, 또한 설계하기 쉽게 할 수 있다.Particularly, in the invention of FIG. 2, since the capillary tube is used as the first and second decompression devices, the resistance of the first and second bypass pipes can be easily adjusted and the decompression device can be made inexpensive The air conditioner can be made inexpensive, and the design can be made easier.
제1도는 본 발명의 공기조화기를 나타내는 냉매 회로도.FIG. 1 is a refrigerant circuit diagram showing the air conditioner of the present invention. FIG.
* 도면의 주요부분에 대한 부호의 설명 *Description of the Related Art [0002]
1 공기조화기1 air conditioner
6 압축기6 compressor
7 실외열교환기7 outdoor heat exchanger
8 감압장치8 Pressure reducer
9, 10 전환밸브9, 10 switching valve
22 제1바이패스관22 first bypass pipe
23 제1개폐밸브23 1st opening and closing valve
24 캐펄레리튜브(제1감압기)24 Capillary tube (first pressure reducing device)
25 제2바이패스관25 second bypass pipe
26 제2개패밸브26 2nd turn valve
27 캐펄레리튜브(제2감압기)27 Capillary tube (second pressure reducing device)
28 제어장치 30, 35 실내열교환기28 control device 30, 35 indoor heat exchanger
Claims (3)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP95-111999 | 1995-05-10 | ||
| JP7111999A JPH08303877A (en) | 1995-05-10 | 1995-05-10 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR960041927A KR960041927A (en) | 1996-12-19 |
| KR100423362B1 true KR100423362B1 (en) | 2004-07-19 |
Family
ID=14575421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019960014611A KR100423362B1 (en) | 1995-05-10 | 1996-05-06 | Air conditioner |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH08303877A (en) |
| KR (1) | KR100423362B1 (en) |
| CN (1) | CN1124447C (en) |
| TW (1) | TW344447U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101003356B1 (en) | 2003-10-21 | 2010-12-23 | 삼성전자주식회사 | Air Conditioner And Control Method Thereof |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1888658B (en) * | 2005-06-27 | 2012-05-02 | 乐金电子(天津)电器有限公司 | Control method for preventing air conditioner liquid refrigerant from inflowing |
| US20080234692A1 (en) * | 2007-03-06 | 2008-09-25 | Matt Brandt | Orthopedic jig, pin, and method |
| JP6029363B2 (en) * | 2012-07-13 | 2016-11-24 | 株式会社日立製作所 | Heat source system |
| CN103398516B (en) * | 2013-07-11 | 2015-12-23 | 四川长虹电器股份有限公司 | A kind of air-conditioning pressurize start up system and control method thereof |
| KR102373851B1 (en) * | 2017-08-31 | 2022-03-14 | 삼성전자주식회사 | Air conditioner |
| CN111336585A (en) * | 2020-03-17 | 2020-06-26 | 广东志高暖通设备股份有限公司 | Multi-split air conditioner floor heating system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5577765U (en) * | 1978-11-24 | 1980-05-29 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102650B (en) * | 1985-04-12 | 1986-11-05 | 株式会社日立制作所 | Air conditioner |
| CN2153006Y (en) * | 1993-07-24 | 1994-01-12 | 邓永林 | One driving n split air conditioner |
-
1995
- 1995-05-10 JP JP7111999A patent/JPH08303877A/en active Pending
-
1996
- 1996-03-13 TW TW087208158U patent/TW344447U/en unknown
- 1996-05-06 KR KR1019960014611A patent/KR100423362B1/en not_active IP Right Cessation
- 1996-05-10 CN CN96104487A patent/CN1124447C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5577765U (en) * | 1978-11-24 | 1980-05-29 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101003356B1 (en) | 2003-10-21 | 2010-12-23 | 삼성전자주식회사 | Air Conditioner And Control Method Thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08303877A (en) | 1996-11-22 |
| TW344447U (en) | 1998-11-01 |
| CN1159546A (en) | 1997-09-17 |
| CN1124447C (en) | 2003-10-15 |
| KR960041927A (en) | 1996-12-19 |
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