KR960009875B1 - Heat pump airconditioner control circuit - Google Patents

Heat pump airconditioner control circuit Download PDF

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Publication number
KR960009875B1
KR960009875B1 KR1019910010619A KR910010619A KR960009875B1 KR 960009875 B1 KR960009875 B1 KR 960009875B1 KR 1019910010619 A KR1019910010619 A KR 1019910010619A KR 910010619 A KR910010619 A KR 910010619A KR 960009875 B1 KR960009875 B1 KR 960009875B1
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KR
South Korea
Prior art keywords
heat exchanger
temperature
outdoor
way valve
indoor
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KR1019910010619A
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Korean (ko)
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KR930000914A (en
Inventor
안정훈
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강진구
삼성전자주식회사
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Priority to KR1019910010619A priority Critical patent/KR960009875B1/en
Publication of KR930000914A publication Critical patent/KR930000914A/en
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Publication of KR960009875B1 publication Critical patent/KR960009875B1/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
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
    • F24F3/10—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with separate supply lines and common return line for hot and cold heat-exchange fluids i.e. so-called "3-conduit" system
    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • 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
    • 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
    • F24F2140/20—Heat-exchange fluid temperature
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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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)
  • Fluid Mechanics (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Abstract

The circuit makes an outdoor heat exchanger efficiently perform a heat exchanging operation by use of the high temp./pressure coolant discharged from an indoor heat exchanger when the outdoor temperature is lower than a set temperature. The circuit comprises: a 3-way valve(10) installed between the indoor heat exchanger(5) and a capillary(4); a heat exchange pipe(11) heating the outdoor heat exchanger(3) with the high temp./pressure discharge from one exit of the 3-way valve(10); an auxiliarly capillary(12) reducing the pressure of the coolant discharged from the pipe(11), and inducing the coolant into the capillary(4); a temperature sensing part(14) including temperature sensors(13,13A); a calculation circuit(15) detecting if the outdoor temperature is lower than the set temperature; a drive part(16) making the coolant induced into the pipe(11) by driving the 3-way valve(10).

Description

히트 펌프 에어콘의 제어회로Control circuit of heat pump air conditioner

제1도는 종래의 히트 펌프 에어콘의 배관도,1 is a piping diagram of a conventional heat pump air conditioner,

제2도는 본 발명의 제어회로가 구성된 히트 펌프 에어콘의 일실시예를 보인 배관도.2 is a piping diagram showing an embodiment of a heat pump air conditioner configured with the control circuit of the present invention.

제3도는 본 발명의 제어회로가 구성된 히트 펌프 에어콘의 다른 실시예를 보인 배관도.3 is a piping diagram showing another embodiment of a heat pump air conditioner configured with the control circuit of the present invention.

제4도는 (가)(나)는 본 발명의 제어회로에 의한 히트 펌프 에어콘의 동작을 보인 신호 흐름도.4 is a signal flow chart showing the operation of the heat pump air conditioner by the control circuit of the present invention.

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

1 : 압축기2 : 4방향 밸브1: compressor 2: four-way valve

3 : 실외측 열교환기4 : 모세관3: outdoor side heat exchanger 4: capillary tube

5 : 실외측 열교환기6 : 어큐뮤리이터5: outdoor side heat exchanger 6: accumulator

10 : 3방향 밸브11 : 열교환 파이프10: 3-way valve 11: heat exchange pipe

12 : 보조 모세관13, 13A : 온도 센서12: auxiliary capillary 13, 13A: temperature sensor

14 : 온도 센싱부15 : 연산 회로부14 temperature sensing unit 15 arithmetic circuit unit

16 : 구동부16: drive unit

본 발명은 냉방 및 난방의 겸용으로 사용하는 히트 펌프 에어콘(heat pump aircon)의 제어회로에 관한 것으로 특히 외기의 온도가 낮은 상태에서 난방 운전을 할 경우에 냉매의 흐름을 제어하는 히트 펌프 에어콘의 제어회로에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control circuit of a heat pump air conditioner used for both cooling and heating. The heat pump air conditioner controls the flow of a refrigerant, especially when the heating operation is performed at a low temperature of the outside air. It is about a circuit.

가정에서 사용하고 있는 공조기기로서는 에어콘이 있다. 그러나 이 에어콘을 냉방을 전용으로 하는 것으로 겨울철에 난방을 하지는 못하였다.The air conditioner used in the home is an air conditioner. However, the air conditioner was dedicated to cooling, which prevented heating in the winter.

최근에는 히트 펌프를 사용하여 냉방 및 난방을 겸용으로 하는 히트 펌프에어콘이 각광을 받고 있다. 그러나 히트 펌프 에어콘은 난방 운전을 할 경우에 외기의 온도가 낮으면, 실외 열교환기의 열교환이 원활하게 이루어지지 않아 난방효율이 낮은 문제점이 있었다.In recent years, the heat pump air conditioner which combines cooling and heating using a heat pump is drawing attention. However, the heat pump air conditioner has a problem of low heating efficiency because the heat exchange of the outdoor heat exchanger is not performed smoothly when the temperature of the outside air is low when the heating operation is performed.

즉, 종래의 히트 펌프 에어콘은 제1도에 도시된 바와 같이 냉방 운전할 경우에, 압축기(1)에서 압축된 고온 고압의 냉매가 4방향 밸브(2)에서 방향전환이 되어 실외측 열교환기(3)로 들어가게 되고, 실외측 열교환기(3)에서 열을 발산하여 액화된 냉매는 모세관(4)을 통해 감압된 후 실내측 열교환기(5)에서 실내의 열을 흡수하여 기화되면서 실내 공기를 냉각시키고, 실내측 열교환기(5)에서 기화된 냉매는 4방향 밸브(2)를 통하고, 어큐뮤레이터(6)를 통해 다시 압축기(1)로 들어가게 되어 있다.That is, in the conventional heat pump air conditioner, when the cooling operation is performed as shown in FIG. 1, the high-temperature and high-pressure refrigerant compressed by the compressor 1 is diverted from the four-way valve 2 so that the outdoor heat exchanger 3 ), And the refrigerant liquefied by dissipating heat from the outdoor heat exchanger (3) is depressurized through the capillary tube (4), and the indoor heat exchanger (5) absorbs heat from the room and vaporizes it to cool the indoor air. The refrigerant vaporized in the indoor side heat exchanger (5) passes through the four-way valve (2) and enters the compressor (1) again through the accumulator (6).

그리고 난방 운전을 할 경우에는 압축기(1)에서 압축된 고온 고압의 냉매가 4방향 밸브(2)를 통해 실내측 열교환기(5)로 유입되어 액화되면서 실내를 난방하고, 실내측 열교환기(5)에서 액화된 냉매는 모세관(4)을 통해 감압된 후 실외측 열교환기(3)에서 실외의 열을 흡수하여 기화되며, 실외측 열교환기(5)에서 기화된 냉매는 4방향 밸브(2)를 통하고, 어큐뮤레이터(6)를 통해 다시 압축기(1)로 들어가게 되어 있다.When the heating operation is performed, the refrigerant of the high temperature and high pressure compressed by the compressor 1 flows into the indoor heat exchanger 5 through the four-way valve 2 and liquefies to heat the room, and the indoor heat exchanger 5 The refrigerant liquefied in the) is decompressed through the capillary tube (4) and then vaporized by absorbing outdoor heat from the outdoor heat exchanger (3). The refrigerant vaporized in the outdoor heat exchanger (5) is a four-way valve (2). Through the accumulator (6) through the accumulator 6 is to enter the compressor (1) again.

그러나 상기와 같은 종래의 히트 펌프 에어콘은 난방 운전을 할 경우에 외기의 온도가 낮으며, 실외측 열교환기(3)에서 냉매가 외기의 열을 흡수하지 못하여 원활하게 기화되지 않으므로 난방효율이 낮아지게 되는 문제점이 있었다.However, the conventional heat pump air conditioner as described above has a low temperature of the outside air when the heating operation is performed, and the heating efficiency is low because the refrigerant does not absorb the heat of the outside air in the outdoor heat exchanger 3 and thus does not vaporize smoothly. There was a problem.

그러므로 본 발명의 목적은 난방운전을 할 경우에 외기의 온도가 낮아도 실외측 열교환기가 원활하게 열교환을 하여 난방효율을 높일 수 있도록 하는 제어회로를 제공하는 데 있다.Therefore, it is an object of the present invention to provide a control circuit that enables the outdoor side heat exchanger to heat exchange smoothly even when the temperature of the outside air is low in the heating operation to increase the heating efficiency.

이와 같은 목적을 가지는 본 발명의 제어회로는 실내측 열교환기에서 배출되는 고온 고압의 냉매를 이용하여 실외측 열교환기를 가열하는 것으로 실내측 열교환기와 모세관의 사이에 3방향 밸브를 설치하고, 그 3방향 밸브가 구동될 경우에 실내측 열교환기에서 배출되는 냉매가 열효관 파이프를 통해 실외측 열교환기를 가열한 후 보조 모세관을 통해 모세관으로 유입되게 한다.The control circuit of the present invention having such a purpose is to heat the outdoor heat exchanger by using a high temperature and high pressure refrigerant discharged from the indoor heat exchanger to provide a three-way valve between the indoor heat exchanger and the capillary tube, When the valve is driven, the refrigerant discharged from the indoor side heat exchanger is heated to the capillary tube through the auxiliary capillary after heating the outdoor side heat exchanger through the heat-effective pipe.

그리고 실외 및 실내의 온도를 감지하여 외기의 온도가 설정온도 이하인지를 검출하고, 설정온도 이하 일 경우에는 상기한 3방향 밸브를 구동시킨다.Then, by detecting the temperature of the outdoor and indoor to detect whether the temperature of the outside air is less than the set temperature, and if the set temperature is less than the three-way valve is driven.

그러므로 본 발명의 제어회로에 의하면, 외기의 온도가 설정온도 이하로 낮아 실외측 열교환기에서 열교환이 원활하게 이루어지지 않을 경우에 실내측 열교환기에서 배출되는 고온 고압의 냉매로 실외측 열교환기를 가열함으로써 실외측 열교환기에서 열교환이 원활하게 이루어지고, 난방효율이 높아지게 된다.Therefore, according to the control circuit of the present invention, when the temperature of the outside air is lower than the set temperature so that the heat exchange in the outdoor heat exchanger is not performed smoothly by heating the outdoor heat exchanger with a high temperature and high pressure refrigerant discharged from the indoor heat exchanger Heat exchange is smoothly performed in the outdoor heat exchanger, and heating efficiency is increased.

이하, 첨부된 제2도 내지 제4도의 도면을 참조하여 본 발명의 제어회로를 상세히 설명하겠으며, 여기서 종래와 동일한 부위에는 동일부호를 부여하였다.Hereinafter, the control circuit of the present invention will be described in detail with reference to the accompanying drawings of FIGS. 2 to 4, where the same reference numerals are given to the same parts as in the prior art.

제2도는 본 발명의 제어회로가 구성된 히트 펌프 에어콘의 일실시예를 보인 배관도로서 이에 도시된 바와 같이, 냉매를 압축하는 압축기(1)와, 상기 압축기(1)에서 배출된 냉매를 냉방 및 난방 운전에 따라 방향 전환하는 4방향 밸브(2)와, 실외 및 실내에서 각기 열교환하는 실외측 열교환기(3) 및 실내측 열교환기(5)와, 냉매를 감압하는 모세관(4)과, 어큐뮤레이터(6)를 구비한 히트펌프 에어콘에 있어서, 상기 실내측 열교환기(5)와 모세관(4)의 사이에 3방향 밸브(10)를 설치하고, 이 3방향 밸브(10)의 일측 출구를 상기 실외측 열교환기(3)에 설치된 열교환 파이프(11)를 통하고, 보조 모세관(12)을 통해 상기 모세관(4)으로 유입되게 하였다.2 is a piping diagram showing an embodiment of a heat pump air conditioner in which a control circuit of the present invention is configured. As shown therein, a compressor 1 for compressing a refrigerant and a refrigerant discharged from the compressor 1 are cooled and heated. A four-way valve 2 for changing directions according to the operation, an outdoor heat exchanger 3 and an indoor heat exchanger 5 for exchanging heat in the outdoors and the indoors, a capillary tube 4 for reducing the refrigerant, and an accumulator In the heat pump air conditioner provided with the oscillator 6, a three-way valve 10 is provided between the indoor heat exchanger 5 and the capillary tube 4, and one outlet of the three-way valve 10 is provided. Through the heat exchange pipe 11 installed in the outdoor side heat exchanger (3), it is allowed to enter the capillary (4) through the auxiliary capillary tube (12).

그리고 실외 및 실내 온도센서(13)(13A)로 실외 및 실내의 온도를 감지하는 온도 센싱부(14)와, 상기 온도 센싱부(14)가 감지한 온도로 외기 온도가 설정온도 이하 인지를 검출하는 연산 회로부(15)와, 상기 연산회로부(15)의 출력신호에 따라 상기 3방향 밸브(10)를 구동시켜 실내측 열교환기(5)에서 배출된 냉매가 열교환 파이프(11)로 유입되게 하는 구동부(16)로 구성하였다.A temperature sensing unit 14 for sensing outdoor and indoor temperatures by the outdoor and indoor temperature sensors 13 and 13A and a temperature sensed by the temperature sensing unit 14 detect whether the outside air temperature is below a set temperature. The three-way valve 10 is driven in accordance with the operation circuit unit 15 and the output signal of the operation circuit unit 15 so that the refrigerant discharged from the indoor heat exchanger 5 flows into the heat exchange pipe 11. It consisted of the drive part 16.

이와 같이 구성된 본 발명은, 냉방운전을 할 경우에는 종래와 마찬가지로 압축기(1)에서 압축된 고온 고압의 냉매가 4방향 밸브(2)에서 방향전환이 되어 실외측 열교환기(3)로 들어가게 되고, 실외측 열교환기(3)에서 열을 발산하여 액화된 냉매는 모세관(4)을 통해 감압된 후 3방향 밸브(10)를 통하고, 실내측 열교환기(5)에서 실내의 열을 흡수하여 기화되면서 실내 공기를 냉각시키고, 실내측 열교환기(5)에서 기화된 냉매는 4방향 밸브(2)를 통하고, 어큐뮤레이터(6)를 통해 다시 압축기(1)로 들어가게 된다.In the present invention configured as described above, in the case of the cooling operation, the high-temperature and high-pressure refrigerant compressed by the compressor 1 is switched in the four-way valve 2 and enters the outdoor heat exchanger 3 as in the prior art. The refrigerant liquefied by dissipating heat from the outdoor heat exchanger (3) is decompressed through the capillary tube (4), and then passes through the three-way valve (10), and the indoor heat exchanger (5) absorbs heat from the room and vaporizes it. While cooling the indoor air, the refrigerant vaporized in the indoor heat exchanger (5) passes through the four-way valve (2), and enters the compressor (1) again through the accumulator (6).

그리고 난방 운전을 할 경우에는 압축기(1)에서 압축된 고온 고압의 냉매가 4방향 밸브(2)를 통해 실내측 열교환기(5)로 유입되어 액화되면서 실내를 난방하고, 실내측 열교환기(5)에서 액화된 냉매는 3방향 밸브(10)를 통하고, 모세관(4)을 통해 감압된 후 실외측 열교환기(3)에서 실외의 열을 흡수하여 기화되며, 실외측 열교환기(5)에서 기화된 냉매는 4방향 밸브(2)를 통하고, 어큐뮤레이터(6)를 통해 다시 압축기(1)로 들어간다.When the heating operation is performed, the refrigerant of the high temperature and high pressure compressed by the compressor 1 flows into the indoor heat exchanger 5 through the four-way valve 2 and liquefies to heat the room, and the indoor heat exchanger 5 The refrigerant liquefied at) is vaporized by absorbing outdoor heat from the outdoor heat exchanger (3) after being decompressed through the three-way valve (10), capillary tube (4), and at the outdoor heat exchanger (5). The vaporized refrigerant enters the compressor 1 through the four-way valve 2 and again through the accumulator 6.

이때, 온도 센싱부(14)는 실외 및 실내 온도센서(13)(13A)로 실내 및 실외의 온도를 감지하고, 그 감지한 온도를 연산회로부(15)가 연산하여 실외 온도가 미리 설정된 온도보다 낮은지를 판별한다.At this time, the temperature sensing unit 14 detects the indoor and outdoor temperatures with the outdoor and indoor temperature sensors 13 and 13A, and calculates the detected temperature by the calculation circuit unit 15 so that the outdoor temperature is greater than the preset temperature. Determine if it is low.

실외 온도가 설정온도보다 낮지 않을 경우에는 구동부(16)가 3방향 밸브(10)를 구동시키지 않으므로 3방향 밸브(10)는 실내측 열교환기(5)에서 배출되는 냉매를 계속 모세관(4)으로 배출시키면서 실내를 난방하게 된다.When the outdoor temperature is not lower than the set temperature, since the driving unit 16 does not drive the three-way valve 10, the three-way valve 10 continuously transfers the refrigerant discharged from the indoor heat exchanger 5 to the capillary tube 4. Heating the room while exhausting.

그리고 실외 온도가 설정된 온도보다 낮을 경우에는 연산회로부(15)의 출력신호에 따라 구동부(16)가 3방향 밸브(10)를 구동시키게 되므로 3방향 밸브(10)는 실내측 열교환기(5)에서 배출되는 고온 고압의 냉매를 열교환 파이프(11)를 통하고, 보조 모세관(12)을 통해 모세관(4)으로 들어가게 된다.When the outdoor temperature is lower than the set temperature, the driving unit 16 drives the three-way valve 10 according to the output signal of the operation circuit unit 15, so that the three-way valve 10 is connected to the indoor heat exchanger 5. The high temperature and high pressure refrigerant discharged through the heat exchange pipe 11 and enters the capillary tube 4 through the auxiliary capillary tube 12.

따라서, 실내측 열교환기(5)에서 배출된 고온 고압의 냉매가 열교환 파이프(11)를 통과하면서 실외측 열교환기(3)를 가열하여 실외측 열교환기(3)에서 원활하게 열교환이 이루어지게 된다.Therefore, the high temperature and high pressure refrigerant discharged from the indoor side heat exchanger 5 passes through the heat exchange pipe 11, thereby heating the outdoor side heat exchanger 3 to smoothly exchange heat in the outdoor side heat exchanger 3. .

그리고 제3도는 본 발명의 제어회로가 구성된 히트 펌프 에어콘의 다른 실시예를 보인 배관도로서 이에 도시된 바와 같이, 열교환 파이프(11)를 압축기(1)까지 연장설치하여 구성하였다.3 is a piping diagram showing another embodiment of the heat pump air conditioner in which the control circuit of the present invention is constructed, and as shown in the drawing, the heat exchange pipe 11 is extended to the compressor 1 and configured.

이와 같이 구성된 본 발명의 다른 실시예는 실외온도가 낮을 경우에 실내측 열교환기(5)에서 배출되는 고온 고압의 냉매가 압축기(1) 및 실외측 열교환기(3)를 가열하여 실외에서 냉매가 원활하게 열교환이 이루어지므로 난방효율이 더욱 향상된다.According to another embodiment of the present invention configured as described above, when the outdoor temperature is low, the high temperature and high pressure refrigerant discharged from the indoor side heat exchanger 5 heats the compressor 1 and the outdoor side heat exchanger 3 so that the refrigerant is stored outdoors. Since the heat exchange is performed smoothly, the heating efficiency is further improved.

한편 제4도의 (가)는 본 발명의 제어회로의 동작을 보인 전제의 신호 르름도이다. 이에 도시된 바와 같이, 단계(20)에서 초기화 동작을 수행하고, 단계(21)에서 운전의 종류를 판단하여 단계(22) (23)에서 운전의 종류에 따라 4방향 밸브(2) 및 3방향 밸브(10)의 동작을 제어하며, 단계(24)에 주파수를 제어하여 냉방 또는 난방 운전을 하게 된다.On the other hand, Fig. 4A is a preliminary signal flow diagram showing the operation of the control circuit of the invention. As shown therein, the initialization operation is performed in step 20, the type of operation is determined in step 21, and the four-way valve 2 and the 3-way direction are determined according to the type of operation in steps 22 and 23. The operation of the valve 10 is controlled, and the frequency is controlled in step 24 to perform cooling or heating operation.

그리고 난방 운전을 할 경우에는 제4도의 (나)에 도시된 바와 같이 단계(30)에서 4방향 밸브(2)를 구동시켜 난방에 적합하게 냉매의 방향을 제어하고, 단계(31)에서 실외 온도를 검출하여 단계(32)에서 검출할 실외 온도가 설정온도이하인지를 판별한다.In case of heating operation, as shown in (b) of FIG. 4, the four-way valve 2 is driven in step 30 to control the direction of the refrigerant to be suitable for heating, and in step 31, the outdoor temperature is controlled. Is detected to determine whether the outdoor temperature to be detected in step 32 is below the set temperature.

이때, 실외 온도가 설정온도보다 낮지 않을 경우에는 단계(33)에서 3방향 밸브를 구동정지시켜 실내측 열교환기(5)에서 배출되는 냉매를 모세관(4)으로 유입시키고, 실외 온도가 설정 온도보다 낮을 경우에는 단계(34)에서 3방향 밸브(10)를 구동시켜 실내측 열교환기(5)에서 배출되는 냉매가 열교환 파이프(11)를 통해 실외측 열교환기(3)를 가열한 후 보조 모세관(12)을 통해 모세관(4)으로 유입시킨 후 단계(35)에서 주파수를 제어하면서 난방 운전을 한다.At this time, when the outdoor temperature is not lower than the set temperature, in step 33, the three-way valve is stopped by driving the refrigerant discharged from the indoor heat exchanger 5 into the capillary tube 4, and the outdoor temperature is higher than the set temperature. If low, the refrigerant discharged from the indoor heat exchanger 5 by driving the three-way valve 10 in step 34 heats the outdoor heat exchanger 3 through the heat exchange pipe 11, and then the auxiliary capillary tube ( 12) is introduced into the capillary tube (4) and the heating operation while controlling the frequency in step 35.

이상에서 상세히 설명한 바와 같이 본 발명의 제어회로는 난방시 실외온도가 설정 온도보다 낮아 실외측 열교환기의 열교환이 원활하게 이루어지지 않을 경우에 실내측 열교환기에서 배출되는 고온 고압의 냉매로 실외측 열교환기를 가열하여 열교환을 하므로 실외측 열교환기의 열교환이 원활하게 이루어지고, 이로 인하여 난방 효율이 향상되는 효과가 있다.As described in detail above, the control circuit of the present invention is an outdoor heat exchanger with high-temperature and high-pressure refrigerant discharged from the indoor heat exchanger when the outdoor heat exchanger does not perform smoothly because the outdoor temperature is lower than the set temperature during heating. Since the heat is exchanged by heating the heat exchanger of the outdoor heat exchanger is made smoothly, thereby improving the heating efficiency.

Claims (1)

냉매를 압축하는 압축기(1)와, 상기 압축기(1)에서 배출된 냉매를 냉방 및 난방 운전에 따라 방향전환하는 4방향 밸브(2)와, 실외 및 실내에서 각기 열교환하는 실외측 열교환기(3) 및 실내측 열교환기(5)와, 냉매를 감압하는 모세관(4)과, 어큐뮤레이터(6)를 구비한 히트 펌프 에어콘에 있어서, 상기 실내측 열교환기(5)와, 모세관(4)의 사이에 설치된 3방향 밸브(10)와, 상기 3방향 밸브(10)의 일측 출구에서 배출되는 고온 고압의 냉매로 상기 실외측 열교환기(3)를 가열하는 열교환 파이프(11)와, 상기 열교환 파이프(11)에서 배출되는 냉매를 감압시켜 상기 모세관(4)에 유입시키는 보조 모세관(12)와, 실외 및 실내 온도센서(13)(13A)로 실외 및 실내의 온도를 감지하는 온도 센싱부(14)와, 상기 온도 센싱부(14)가 감지한 온도로 외기 온도가 설정온도 이하 인지를 검출하는 연산 회로부(15)와, 실외 온도가 설정 온도 이하일 경우에 상기 연산회로부(15)의 출력신호에 따라 상기 3방향 밸브(10)를 구동시켜 실내측 열교환기(5)에서 배출된 냉매가 열교환 파이프(11)로 유입되게 하는 구동부(16)로 구성함을 특징으로 하는 히트 펌프 에어콘의 제어회로.A compressor (1) for compressing the refrigerant, a four-way valve (2) for redirecting the refrigerant discharged from the compressor (1) in accordance with cooling and heating operations, and an outdoor side heat exchanger (3) for exchanging heat inside and outside each And an indoor heat exchanger (5), a capillary tube (4) for depressurizing refrigerant, and an accumulator (6), wherein the indoor heat exchanger (5) and the capillary tube (4) A heat exchange pipe 11 for heating the outdoor side heat exchanger 3 with a high temperature and high pressure refrigerant discharged from one side outlet of the three-way valve 10, a three-way valve 10 installed between the heat exchange pipes 11, and the heat exchanger The auxiliary capillary tube 12 for decompressing the refrigerant discharged from the pipe 11 into the capillary tube 4 and the temperature sensing unit for sensing the temperature of the outdoor and the indoor room using the outdoor and indoor temperature sensors 13 and 13A ( 14) and the temperature detected by the temperature sensing unit 14 to detect whether the outside temperature is below the set temperature. The coolant discharged from the indoor heat exchanger (5) is driven by driving the three-way valve (10) according to the output signal of the calculation circuit unit (15) and the operation circuit unit (15) when the outdoor temperature is lower than or equal to the set temperature. Control circuit for a heat pump air conditioner, characterized in that consisting of a drive unit 16 to be introduced into the pipe (11).
KR1019910010619A 1991-06-25 1991-06-25 Heat pump airconditioner control circuit KR960009875B1 (en)

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KR1019910010619A KR960009875B1 (en) 1991-06-25 1991-06-25 Heat pump airconditioner control circuit

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KR960009875B1 true KR960009875B1 (en) 1996-07-24

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