KR100538670B1 - A heating and cooling system for prevent inflow a liquid refrigrant of a compressor - Google Patents

A heating and cooling system for prevent inflow a liquid refrigrant of a compressor Download PDF

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Publication number
KR100538670B1
KR100538670B1 KR10-2004-0043490A KR20040043490A KR100538670B1 KR 100538670 B1 KR100538670 B1 KR 100538670B1 KR 20040043490 A KR20040043490 A KR 20040043490A KR 100538670 B1 KR100538670 B1 KR 100538670B1
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South Korea
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compressor
refrigerant
temperature
indoor unit
heat
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KR10-2004-0043490A
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Korean (ko)
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KR20050118380A (en
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이면희
이준희
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주식회사 알레
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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
    • 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
    • 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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0401—Refrigeration circuit bypassing means for the compressor
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0411—Refrigeration circuit bypassing means for the expansion valve or capillary tube
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/28—Means for preventing liquid refrigerant entering into the compressor
    • 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
    • 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
    • F25B2700/2101—Temperatures in a bypass
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Abstract

본 발명은 액냉매 압축기 유입방지용 냉난방 시스템에 관한 것으로, 냉매를 단열상태에서 팽창시키는 팽창기(1)와, 열교환기를 갖는 실내기(2)와, 냉매를 단열상태에서 압축시키는 압축기(3) 및, 열교환기를 갖는 실외기(4)로 구성되어, 상기 압축기(3)에서 압축된 고온 고압의 냉매가스를 실내기(2)에서 응축하고, 상기 실내기(2)에서 응축된 냉매액을 상기 팽창기(1)에서 팽창시키며, 상기 실외기(4)에서 증발시킨 후 상기 압축기(3)에 흡입되는 한편, 상기 팽창기(1)와 실내기(2) 사이에 열촉진 복합회로(5)가 구성되고, 상기 압축기(3) 출구에 바이패스 구조를 갖는 회로(SV-4)가 상기 실내기(2)와 연결되도록 구성되며, 상기 바이패스 구조를 갖는 회로(SV-4)에 제 1 바이패스 밸브(6)가 설치되어 상기 열촉진 복합회로(5)의 열촉진을 통해 압축기(3) 흡입온도를 상승시켜 압축기(3)로 액냉매가 유입되는 것을 방지할 수 있도록 된 구조로서, 상기 냉난방 시스템의 열촉진을 통해 압축기 흡입 온도의 상승으로 압축기 액냉매의 유입이 감소되고, 전체적인 난방 시스템이 안정됨과 더불어 온도를 상승시킬 수 있으며, 실외기를 통해 냉매의 온도를 저하시킴으로써 압축기의 과부하 방지를 통해 압축을 증대시킬 수 있는 것이다.The present invention relates to a cooling and heating system for preventing the introduction of a liquid refrigerant compressor, comprising: an expander (1) for expanding a refrigerant in an insulated state, an indoor unit (2) having a heat exchanger, a compressor (3) for compressing the refrigerant in an insulated state, and a heat exchanger It consists of an outdoor unit (4) having a group, the refrigerant gas of the high temperature and high pressure compressed by the compressor (3) is condensed in the indoor unit (2), and the refrigerant liquid condensed in the indoor unit (2) is expanded in the expander (1) And, after evaporating in the outdoor unit (4), sucked into the compressor (3), a heat-promoting combined circuit (5) is formed between the expander (1) and the indoor unit (2), and the compressor (3) outlet A circuit SV-4 having a bypass structure is connected to the indoor unit 2, and a first bypass valve 6 is installed in the circuit SV-4 having the bypass structure to provide the heat. When the suction temperature of the compressor (3) is raised by thermal promotion of the acceleration combined circuit (5). In order to prevent the liquid refrigerant from flowing into the compressor (3), the inlet temperature of the compressor is reduced due to the rise of the compressor suction temperature through the heat promotion of the cooling and heating system, and the entire heating system is stabilized. The temperature can be increased, and the compression can be increased by preventing overload of the compressor by lowering the temperature of the refrigerant through the outdoor unit.

Description

액냉매 압축기 유입방지용 냉난방 시스템{A heating and cooling system for prevent inflow a liquid refrigrant of a compressor}A heating and cooling system for prevent inflow a liquid refrigrant of a compressor}

본 발명은 히트 펌프를 이용한 냉난방 시스템에 관한 것으로, 특히 외기 온도 또는 시스템상의 문제로 인해 액냉매 상태로 압축기에 유입되는 것을 방지함으로써 전체 시스템의 안정을 도모할 수 있도록 한 액냉매 압축기 유입방지용 냉난방 시스템에 관한 것이다.The present invention relates to a cooling and heating system using a heat pump, and in particular, to prevent the liquid refrigerant from entering the compressor in the state of liquid refrigerant due to the outside temperature or system problems to ensure the stability of the entire system to prevent the liquid refrigerant compressor inflow and cooling system It is about.

일반적으로 히트 펌프 사이클은 압축기, 실내기(실내 열교환기), 팽창기 및, 실외기(실외 열교환기)를 기본 구성으로 하는 바, 상기 압축기에서 압축된 고온 고압의 냉매가스를 실내기에서 응축하여 그 응축열을 난방 건조 등에 사용하고, 상기 실내기에서 응축된 냉매액을 상기 팽창기에서 팽창시키며, 상기 실외기에서 증발시킨 후 상기 압축기에 흡입되는 순환 사이클을 형성하는 것이다.In general, the heat pump cycle is composed of a compressor, an indoor unit (indoor heat exchanger), an expander, and an outdoor unit (outdoor heat exchanger). The heat pump cycle condenses the heat of the condensation heat by condensing the refrigerant gas of the high temperature and high pressure in the compressor in the indoor unit. Used for drying, the refrigerant liquid condensed in the indoor unit is expanded in the expander, and evaporated in the outdoor unit to form a circulation cycle which is sucked into the compressor.

그런데, 상기와 같은 순환 사이클을 형성할 때 증발기로 작용하는 실외기에서 냉매액의 증발이 충분하지 못하여 습냉매 증기 상태로 상기 압축기에 흡입되면 액백현상이 일어나고, 상기 압축기의 실린더 내에서 냉매가 증발하면서 팽창함으로써 그 효율이 떨어지게 되며, 경우에 따라서는 액격이 발생하여 압축기가 손상을 입기도 하기 때문에 냉매액이 압축기에 흡입되는 것을 방지하기 위하여 실외기와 압축기 사이에 액분리기를 설치하고 있는 실정이다.However, when forming the circulation cycle as described above, when the refrigerant liquid is not sufficiently evaporated in the outdoor unit acting as an evaporator and sucked into the compressor in the wet refrigerant vapor state, a liquid back phenomenon occurs, and the refrigerant evaporates in the cylinder of the compressor. The efficiency is lowered by expansion, and in some cases liquid droplets are generated and the compressor may be damaged, so that a liquid separator is installed between the outdoor unit and the compressor to prevent refrigerant liquid from being sucked into the compressor.

그러나, 상기 액분리기에 가열 유체실을 형성하고 이를 가열하여 기화시키는 방법이 존재하나 이는 또다른 외부의 에너지를 필요로 하는 단점이 있는 것이다.However, there exists a method of forming a heating fluid chamber in the liquid separator and heating it to vaporize it, which requires another external energy.

한편, 종래의 난방 사이클은 고온고압이면서 기체 상태인 냉매가 실내기에 유입되어 응축되면서 실내에 열을 방출하고, 상기 실내기에서 배출된 냉매가 팽창기에서 저온저압으로 팽창된 후 실외기로 배출되며, 상기 실외기는 유입된 저온저압의 냉매를 증발시켜 실외의 열을 빼앗아 압축기로 배출하고, 상기 압축기는 이러한 냉매를 고온고압으로 압축하여 실내기로 유입시키는 것이다.On the other hand, the conventional heating cycle is a high temperature, high pressure and gaseous refrigerant is introduced into the indoor unit and condensed to release heat in the room, the refrigerant discharged from the indoor unit is expanded to low temperature and low pressure in the expander is discharged to the outdoor unit, the outdoor unit The evaporation of the low-temperature low-pressure refrigerant to take the heat of the outside and discharged to the compressor, the compressor is to compress the refrigerant to high temperature and high pressure to enter the indoor unit.

그런데, 상기와 같은 난방 사이클은 과열증기 상태의 냉매가 압축기에 흡입되어 내부 구성품들을 열화시켜 수명을 저하시키게 되고, 압축기의 효율 또한 저하시키는 문제가 있었다.However, the heating cycle as described above has a problem that the refrigerant in the superheated steam state is sucked into the compressor to deteriorate internal components, thereby reducing the service life, and also reducing the efficiency of the compressor.

그리고, 상기 압축기로부터 토출된 냉매를 다시 압축기로 유입시키는 방법은 즉각적인 유입온도와 압을 상승시키는 효과는 있으나 지속하지 않으면 그 효과가 즉각 소멸될 뿐아니라 이로 인해 난방시스템은 효율이 저하되어 난방시스템으로의 사용이 어려워지는 것이다.In addition, the method of introducing the refrigerant discharged from the compressor back into the compressor has an effect of immediately increasing the inlet temperature and pressure, but if it does not continue, the effect is immediately extinguished. Will be difficult to use.

이에 본 발명은 상기한 바의 제반 사정을 감안하여 안출된 것으로, 외기 온도 또는 시스템상의 문제로 인해 액냉매 상태로 압축기에 유입되는 것을 방지함으로써 전체 시스템의 안정을 도모할 수 있도록 한 액냉매 압축기 유입방지용 냉난방 시스템을 제공함에 그 목적이 있는 것이다.Accordingly, the present invention has been made in view of the above-described circumstances, and the liquid refrigerant compressor has been introduced to prevent the inflow of the compressor in the liquid refrigerant state due to an outside temperature or a system problem, so that the entire system can be stabilized. It is an object of the present invention to provide a heating and cooling system for prevention.

상기한 바의 목적을 달성하기 위한 본 발명은, 냉매를 단열상태에서 팽창시키는 팽창기와, 열교환기를 갖는 실내기와, 냉매를 단열상태에서 압축시키는 압축기 및, 열교환기를 갖는 실외기로 구성되어, 상기 압축기에서 압축된 고온 고압의 냉매가스를 실내기에서 응축하고, 상기 실내기에서 응축된 냉매액을 상기 팽창기에서 팽창시키며, 상기 실외기에서 증발시킨 후 상기 압축기에 흡입되는 순환 사이클을 형성하도록 된 냉난방 시스템에 있어서, 상기 팽창기와 실내기 사이에 열촉진 복합회로가 구성되고, 상기 압축기 출구에 바이패스 구조를 갖는 회로(SV-4)가 상기 실내기와 연결되도록 구성되며, 상기 바이패스 구조를 갖는 회로(SV-4)에 제 1 바이패스 밸브가 설치되어 상기 열촉진 복합회로의 열촉진을 통해 열촉진 복합회로 출구 냉매온도가 상승됨으로서 압축기 흡입온도를 상승시켜 압축기로 액냉매가 유입되는 것을 방지할 수 있도록 된 구조이다.The present invention for achieving the above object is composed of an expander for expanding the refrigerant in a heat insulating state, an indoor unit having a heat exchanger, a compressor for compressing the refrigerant in a heat insulating state, and an outdoor unit having a heat exchanger, A cooling and heating system configured to condense a compressed high-temperature high-pressure refrigerant gas in an indoor unit, expand the refrigerant liquid condensed in the indoor unit in the expander, and form a circulation cycle that is evaporated in the outdoor unit and sucked into the compressor. A thermal accelerator composite circuit is formed between the expander and the indoor unit, and a circuit SV-4 having a bypass structure at the outlet of the compressor is configured to be connected to the indoor unit, and a circuit SV-4 having the bypass structure. A first bypass valve is installed so that the temperature of the heat-promoting composite circuit outlet refrigerant is increased by heat-promoting the heat-promoting composite circuit. By being a structure so that by raising the temperature of the compressor suction to prevent the liquid refrigerant from entering the compressor.

그리고, 상기 압축기 입구에 바이패스 구조를 갖는 또다른 회로(SV-2)가 상기 실내기와 연결되도록 구성되고, 상기 바이패스 구조를 갖는 또다른 회로(SV-2)에 제 2 바이패스 팽창밸브가 설치되어 상기 실내기에서 토출되는 중온고압의 포화 액냉매의 일부를 제 2 바이패스 팽창밸브를 통해 저온저압의 가스로 변화하여 압축기의 입구로 전달할 수 있도록 된 것이다.Further, another circuit SV-2 having a bypass structure at the compressor inlet is connected to the indoor unit, and a second bypass expansion valve is provided at another circuit SV-2 having the bypass structure. It is installed so that a portion of the medium-temperature high-pressure saturated liquid refrigerant discharged from the indoor unit can be transferred to the inlet of the compressor by changing to a gas of low temperature and low pressure through the second bypass expansion valve.

따라서, 상기의 냉난방 시스템에 의해 외기 온도 저하시 열촉진 복합회로 내의 예열기능 증대로 열촉진 복합회로 출구 냉매의 온도가 상승하게 되고, 열촉진을 통해 압축기 흡입 온도의 상승으로 압축기 액냉매의 유입이 감소되며, 전체적인 난방 시스템이 안정됨과 더불어 온도를 상승시킬 수 있고, 제 2 바이패스 팽창밸브를 통해 압축기로 흡입되는 냉매의 온도를 저하시킴으로써 압축기의 과부하 방지를 통해 압축을 증대시키며, 실외기로 유입되는 프레쉬 가스를 억제시켜 실외기의 일량을 증대시킬 수 있는 것이다.Therefore, the air conditioning system increases the preheating function in the thermal promotion composite circuit when the outside air temperature decreases, thereby increasing the temperature of the thermal promotion composite circuit outlet refrigerant and increasing the compressor suction temperature through the thermal promotion. It can reduce the temperature, increase the temperature as well as stabilize the whole heating system, increase the compression by preventing overload of the compressor by lowering the temperature of the refrigerant sucked into the compressor through the second bypass expansion valve, By suppressing the fresh gas, the work of the outdoor unit can be increased.

이하 본 발명을 첨부된 예시도면을 참조하여 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 액냉매 압축기 유입방지용 냉난방 시스템을 나타낸 구성도인 난방시의 냉매순환도로서, 냉매를 단열상태에서 팽창시키는 팽창기(1)와, 열교환기를 갖는 실내기(2)와, 냉매를 단열상태에서 압축시키는 압축기(3) 및, 열교환기를 갖는 실외기(4)로 구성되어, 상기 압축기(3)에서 압축된 고온 고압의 냉매가스를 실내기(2)에서 응축하고, 상기 실내기(2)에서 응축된 냉매액을 상기 팽창기(1)에서 팽창시키며, 상기 실외기(4)에서 증발시킨 후 상기 압축기(3)에 흡입되는 순환 사이클을 형성하는 한편, 상기 팽창기(1)와 실내기(2) 사이에 열촉진 복합회로(5)가 구성되고, 상기 압축기(3) 출구에 바이패스 구조를 갖는 회로(SV-4)가 상기 실내기(2)와 연결되도록 구성되며, 상기 바이패스 구조를 갖는 회로(SV-4)에 제 1 바이패스 밸브(6)가 설치되어 상기 열촉진 복합회로(5)의 열촉진을 통해 압축기(3) 흡입온도를 상승시켜 압축기(3)로 액냉매가 유입되는 것을 방지할 수 있도록 된 구조이다.1 is a diagram illustrating a refrigerant circulation during heating, which is a block diagram illustrating a cooling and cooling system for preventing a liquid refrigerant compressor inflow, according to an embodiment of the present invention, an expander (1) for expanding a refrigerant in an insulated state, an indoor unit (2) having a heat exchanger, and a refrigerant; Is composed of a compressor (3) for compressing in a heat insulating state, and an outdoor unit (4) having a heat exchanger to condense the high temperature and high pressure refrigerant gas compressed by the compressor (3) in the indoor unit (2), and the indoor unit (2) Expands the refrigerant liquid condensed in the expander (1), forms a circulation cycle which is evaporated in the outdoor unit (4) and sucked into the compressor (3), while between the expander (1) and the indoor unit (2) A circuit for heat promoting complex 5 is configured, and a circuit SV-4 having a bypass structure at the outlet of the compressor 3 is connected to the indoor unit 2, and has a bypass structure ( SV-4) is provided with a first bypass valve (6) Through thermal acceleration of heat promotes composite circuit 5 raises the compressor (3) is the inlet temperature to avoid that the structure of the liquid refrigerant from entering the compressor (3).

여기서, 상기의 구조로 이루어진 액냉매 압축기 유입방지용 냉난방 시스템은 상기 회로(SV-4)상의 바이패스와 그 시스템의 온도와 압력에 따라 시스템을 최적화하는 제 1 바이패스 밸브(6)를 포함하는 것을 특징으로 하는 것이다.Here, the cooling and heating system for preventing the refrigerant entering the liquid refrigerant compressor having the above structure includes a bypass on the circuit (SV-4) and the first bypass valve (6) for optimizing the system according to the temperature and pressure of the system. It is characterized by.

그러므로, 상기 냉난방 시스템은 외기 온도 저하시 상기 열촉진 복합회로(5)의 예열기능이 증대되어 열촉진 복합회로(5) 출구 냉매의 온도가 대략 4℃ 상승하게 되고, 이와 같은 열촉진을 통해 상기 압축기(3)의 흡입온도를 상승시키도록 된 것이다.Therefore, the air-conditioning system increases the preheating function of the heat promoting composite circuit 5 when the outside air temperature decreases, so that the temperature of the refrigerant of the heat promoting composite circuit 5 exits approximately 4 ° C., and the heat promoting It is to increase the suction temperature of the compressor (3).

한편, 상기 냉난방 시스템의 압축기(3) 입구에 바이패스 구조를 갖는 또다른 회로(SV-2)가 상기 실내기(2)와 연결되도록 구성되고, 상기 바이패스 구조를 갖는 또다른 회로(SV-2)에 제 2 바이패스 팽창밸브(7)가 설치되어 상기 실내기(2)에서 토출되는 중온고압의 포화 액냉매의 일부를 제 2 바이패스 팽창밸브(7)를 통해 저온저압의 가스로 변화시켜 압축기(3)의 입구로 전달할 수 있도록 된 것이다.On the other hand, another circuit SV-2 having a bypass structure at the inlet of the compressor 3 of the air conditioning system is configured to be connected to the indoor unit 2, and another circuit SV-2 having the bypass structure. The second bypass expansion valve (7) is installed to convert a portion of the medium-temperature high-pressure saturated liquid refrigerant discharged from the indoor unit (2) into a gas of low temperature and low pressure through the second bypass expansion valve (7). (3) It is to be delivered to the entrance.

즉, 상기 제 2 바이패스 팽창밸브(7)를 통해 압축기(3)로 유입되는 냉매 온도를 저하시켜 압축기(3)에서 토출되는 냉매온도가 저하되어 이 결과 상기 실외기(4)를 통한 냉매의 온도를 저하시킴으로써 압축기(3)의 과부하로 인한 손실을 예방할 수 있으며, 회로(SV-2)의 작동시 압축기(3)의 토출 온도를 15℃ 가량 저하시킬 수 있는 것이다.That is, the temperature of the coolant discharged from the compressor 3 is lowered by lowering the temperature of the coolant flowing into the compressor 3 through the second bypass expansion valve 7. As a result, the temperature of the coolant through the outdoor unit 4 is reduced. By lowering the pressure loss of the compressor 3 can be prevented, and the discharge temperature of the compressor 3 can be reduced by about 15 ° C. during the operation of the circuit SV-2.

그리고, 상기 액냉매 압축기 유입방지용 냉난방 시스템을 이용한 냉방장치는 도2에서와 같이 우선, 저압 기체 상태의 냉매가 상기 압축기(3)에서 압축된 다음 고온고압의 증기 상태로 상기 실외기(응축기)(4)에 전달되고, 여기서 열을 방출함으로써 냉매가 액상으로 응축되며, 이렇게 응축된 냉매는 상기 열촉진 복합회로(5)를 지나면서 상기 보조팽창기(8)에서 감압팽창되어 실내기(증발기)(2)로 공급되는 바, 상기 냉매는 실내기(증발기)(2)에서 외부로부터 열을 흡수하여 증발된 후, 상기 압축기(3)로 다시 복귀하게 되는 것이다.In the cooling apparatus using the cooling and heating system for preventing the liquid refrigerant compressor inflow, first, as shown in FIG. 2, the refrigerant in a low pressure gas state is compressed in the compressor 3 and then the outdoor unit (condenser) 4 in a high temperature and high pressure steam state. ), Where the refrigerant condenses into a liquid phase by releasing heat, and the condensed refrigerant expands under reduced pressure in the auxiliary expander (8) while passing through the heat promoting composite circuit (5). The refrigerant is absorbed from the outside in the indoor unit (evaporator) 2 to be evaporated and evaporated, and then returned to the compressor 3 again.

또한, 상기 액냉매 압축기 유입방지용 냉난방 시스템을 이용한 난방장치는 우선, 상기 실내기(2)로부터 배출된 냉매가 열촉진 복합회로(5)에 전달되는 과정에서 상기 바이패스 회로(SV-4)의 제 1 바이패스 밸브(6)가 일정조건에서 작동하여 실외온도가 저온으로 떨어질 때 센서 감지에 의해 바이패스 회로(SV-4)가 작동하여 열촉진 복합회로(5) 내의 예열기능을 증대시킴으로써 열촉진 복합회로(5) 출구 냉매의 온도를 상승시키게 되고, 이렇게 온도가 상승된 냉매가 팽창기(1)로 유입되며, 상기 팽창기(1)로 유입되는 고온고압의 포화 액냉매의 일부를 상기 또다른 바이패스 회로(SV-2)의 제 2 바이패스 팽창밸브(7)가 일정조건에서 토출가스의 온도를 센서가 감지함으로써 이상 고온으로 올라갔을 때 작동하여 저온저압으로 변화시킨 후, 상기 제 2 바이패스 팽창밸브(7)에서 배출된 냉매가 압축기(3)의 입구로 전달되어 압축기(3)로 유입디는 냉매가 저하됨으로써 압축기(3)의 출구 냉매온도를 저하시킬 수 있는 것이다.In addition, the heating apparatus using the cooling and heating system for preventing the liquid refrigerant compressor inflow, first of the bypass circuit (SV-4) in the process of passing the refrigerant discharged from the indoor unit (2) to the heat promoting composite circuit (5) 1 When the bypass valve 6 operates under a certain condition and the outdoor temperature drops to a low temperature, the bypass circuit SV-4 is activated by sensor detection to increase the preheating function in the heat promoting composite circuit 5 to promote heat. The temperature of the refrigerant exiting the composite circuit 5 is increased, and the refrigerant having such a temperature is introduced into the expander 1, and a portion of the high temperature and high pressure saturated liquid refrigerant flowing into the expander 1 is transferred to the another via. The second bypass expansion valve 7 of the pass circuit SV-2 operates when the temperature of the discharge gas is raised to an abnormally high temperature by sensing the temperature of the discharge gas under a predetermined condition, and then changes to a low temperature low pressure. expansion The refrigerant discharged from the probe (7) is passed to the inlet of the compressor 3 flows into the compressor 3 D is capable of lowering the outlet refrigerant temperature of the compressor 3, the refrigerant is being lowered.

따라서, 상기와 같이 실외온도가 이상 저온 및 이상 고온이 되었을 때 압축기(3)에서 토출되는 냉매의 온도를 조절함으로써 압축기(3)의 과부하를 방지함과 더불어 그 압축력을 증대시킬 수 있고, 열촉진을 통해 상기 압축기(3)의 흡입온도를 상승시켜 압축기(3)로 액냉매가 유입되는 것을 최소화할 수 있는 것이다.Therefore, by controlling the temperature of the refrigerant discharged from the compressor 3 when the outdoor temperature becomes abnormal low temperature and abnormal high temperature as described above, it is possible to prevent the overload of the compressor 3 and to increase its compression force and to promote heat. By increasing the suction temperature of the compressor (3) through it can minimize the introduction of the liquid refrigerant into the compressor (3).

이상에서 설명한 바와 같이 본 발명에 따른 액냉매 압축기 유입방지용 냉난방 시스템에 의하면, 외기 온도 저하시 열촉진 복합회로 내의 예열기능 증대로 열촉진 복합회로 출구 냉매의 온도가 상승하게 되고, 열촉진을 통해 압축기 흡입 온도의 상승으로 압축기 액냉매의 유입이 감소되며, 전체적인 난방 시스템이 안정됨과 더불어 온도를 상승시킬 수 있고, 제 2 바이패스 팽창밸브를 통해 냉매의 온도를 저하시킴으로써 압축기의 과부하 방지를 통해 압축을 증대시키며, 실외기로 유입되는 프레쉬 가스를 억제시켜 실외기의 일량을 증대시킬 수 있는 효과가 있는 것이다.As described above, according to the air-conditioning system for preventing the liquid refrigerant compressor inflow according to the present invention, when the outside temperature decreases, the temperature of the heat-promoting composite circuit outlet refrigerant is increased by increasing the preheating function in the heat-promoting composite circuit, and the compressor is promoted through heat promotion. Increasing the suction temperature reduces the compressor liquid refrigerant inflow, stabilizes the entire heating system, increases the temperature, and reduces the temperature of the refrigerant through the second bypass expansion valve. Increasing and suppressing the fresh gas flowing into the outdoor unit has the effect of increasing the amount of the outdoor unit.

도 1은 본 발명에 따른 액냉매 압축기 유입방지용 냉난방 시스템을 나타낸 구성도로서 난방시 냉매 순환도도 2는 본 발명에 따른 액냉매 압축기 유입방지용 냉난방 시스템을 나타낸 구성도로서 냉방시 냉매 순환도1 is a block diagram showing a cooling and cooling system for preventing the introduction of a liquid refrigerant compressor according to the present invention refrigerant refrigerant diagram when heating Figure 2 is a block diagram showing a cooling and cooling system for preventing the introduction of a liquid refrigerant compressor according to the present invention.

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

1: 팽창기 2 : 실내기1: inflator 2: indoor unit

3 : 압축기 4 : 실외기3: compressor 4: outdoor unit

5 : 열촉진 복합회로 6 : 제 1 바이패스 밸브5: heat promoting composite circuit 6: first bypass valve

7 : 제 2 바이패스 팽창밸브 8 : 보조팽창기7: second bypass expansion valve 8: auxiliary expander

SV-4 : 액냉매 압축기 유입방지용 바이패스 회로SV-4: liquid refrigerant compressor inflow prevention bypass circuit

SV-2 : 압축기 과부하방지용 바이패스 회로SV-2: Compressor Overload Protection Bypass Circuit

Claims (2)

냉매를 단열상태에서 팽창시키는 팽창기(1)와, 열교환기를 갖는 실내기(2)와, 냉매를 단열상태에서 압축시키는 압축기(3) 및, 열교환기를 갖는 실외기(4)로 구성되어, 상기 팽창기(1)와 실내기(2) 사이에 열촉진 복합회로(5)가 구성되고, 상기 압축기(3) 출구에 바이패스 구조를 갖는 회로(SV-4)가 상기 실내기(2)와 연결되도록 구성되며, 상기 바이패스 구조를 갖는 회로(SV-4)에 제 1 바이패스 밸브(6)가 설치되어 상기 열촉진 복합회로(5)의 열촉진을 통해 압축기(3) 흡입온도를 상승시켜 압축기(3)로 액냉매가 유입되는 것을 방지할 수 있도록 된 액냉매 압축기 유입방지용 냉난방 시스템에 있어서,An expander (1) for expanding the refrigerant in an adiabatic state, an indoor unit (2) having a heat exchanger, a compressor (3) for compressing the refrigerant in an adiabatic state, and an outdoor unit (4) having a heat exchanger. And a heat promoting complex circuit 5 is configured between the indoor unit 2 and the circuit SV-4 having a bypass structure at the outlet of the compressor 3, and is connected to the indoor unit 2. The first bypass valve 6 is installed in the circuit SV-4 having the bypass structure to increase the suction temperature of the compressor 3 through the heat promotion of the heat promoting composite circuit 5 to the compressor 3. In the cooling and cooling system for preventing the introduction of liquid refrigerant compressor, 상기 압축기(3) 입구에 바이패스 구조를 갖는 또다른 회로(SV-2)가 상기 실내기(2)와 연결되도록 구성되고, 상기 바이패스 구조를 갖는 또다른 회로(SV-2)에 제 2 바이패스 팽창밸브(7)가 설치되어 상기 실내기(2)에서 토출되는 고온고압의 포화 액냉매의 일부를 제 2 바이패스 팽창밸브(7)를 통해 저온저압의 가스로 변환시킨 후 압축기(3)의 입구로 전달할 수 있도록 한 것을 특징으로 하는 액냉매 압축기 유입방지용 냉난방 시스템.Another circuit SV-2 having a bypass structure at the inlet of the compressor 3 is configured to be connected to the indoor unit 2, and a second bypass is provided to another circuit SV-2 having the bypass structure. A pass expansion valve (7) is installed to convert a portion of the high temperature and high pressure saturated liquid refrigerant discharged from the indoor unit (2) into a low temperature low pressure gas through the second bypass expansion valve (7). Cooling and heating system for preventing the introduction of liquid refrigerant compressor, characterized in that the transfer to the inlet. 삭제delete
KR10-2004-0043490A 2004-06-14 2004-06-14 A heating and cooling system for prevent inflow a liquid refrigrant of a compressor KR100538670B1 (en)

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