KR20120000464A - Gas engine heat pump - Google Patents

Gas engine heat pump Download PDF

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Publication number
KR20120000464A
KR20120000464A KR1020100060840A KR20100060840A KR20120000464A KR 20120000464 A KR20120000464 A KR 20120000464A KR 1020100060840 A KR1020100060840 A KR 1020100060840A KR 20100060840 A KR20100060840 A KR 20100060840A KR 20120000464 A KR20120000464 A KR 20120000464A
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South Korea
Prior art keywords
cooling water
refrigerant
engine
heat
cooling
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KR1020100060840A
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Korean (ko)
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KR101201212B1 (en
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박정식
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박정식
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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
    • F25B27/00—Machines, plants or systems, using particular sources of energy
    • F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
    • 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
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type
    • 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
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • 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
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
    • 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
    • F25B2327/00—Refrigeration system using an engine for driving a compressor
    • F25B2327/001—Refrigeration system using an engine for driving a compressor of the internal combustion type

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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)
  • Combustion & Propulsion (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

PURPOSE: A gas engine driving heat pump is provided to reduce costs for a cooling device by cooling engine cooling water to a proper temperature through a heat exchange with a heat exchange media. CONSTITUTION: A gas engine driving heat pump comprises an engine(10), a compressor(20), outdoor and indoor units(30,40), an expansion valve(50), and a four-way valve. The compressor driven by the engine and compresses a refrigerant to high pressure and high temperature. The four-way valve controls a flow direction and leads the refrigerant compressed by the compressor to the outer or indoor unit. Inlet and outlet parts of the outer unit comprise a refrigerant flow path and a cooling water path. The refrigerant flow path is connected to the four-way valve and the expansion valve. The cooling water path guides the flow of cooling water circulated through the engine and cools the cooling water by the heat exchange media.

Description

가스 엔진 구동 히트펌프{GAS ENGINE HEAT PUMP}Gas Engine Driven Heat Pumps {GAS ENGINE HEAT PUMP}

본 발명은 가스 엔진 구동 히트펌프에 관한 것으로, 더욱 상세하게는 엔진을 냉각하는 냉각수를 히트펌프 사이클의 열교환매체와 열교환시키고, 아울러, 냉각수의 열을 냉매의 열교환용으로 이용할 수 있는 가스 엔진 구동 히트펌프에 관한 것이다.
The present invention relates to a gas engine driven heat pump, and more particularly, to a gas engine driven heat, in which a coolant for cooling an engine is heat-exchanged with a heat exchange medium of a heat pump cycle, and heat of the coolant is used for heat exchange of a refrigerant. It is about a pump.

일반적으로 가스 엔진식 히트펌프는 냉매를 압축하는 압축기가 가스를 연소시키며 구동하는 가스엔진에 의해 동작시킬 수 있게 되어 있는 것으로, 하나의 유닛으로 냉방과 난방을 동시에 수행할 수 있도록 되어 있다.In general, a gas engine type heat pump is configured to be operated by a gas engine driven by a compressor that compresses a refrigerant to burn a gas, and is capable of simultaneously cooling and heating a single unit.

또한, 이러한 종래의 가스 엔진식 히트펌프에는 가스엔진을 냉각하기 위한 냉각장치가 구비되어 있다. 냉각장치는 냉각수가 실외 공기와 열교환하며 냉각되는 라디에이터와, 냉각수가 가스엔진과 라디에이터로 유동하게 하는 냉각수관과, 냉각In addition, the conventional gas engine type heat pump is provided with a cooling device for cooling the gas engine. The chiller includes a radiator in which the coolant heats and exchanges with the outdoor air, a coolant pipe allowing the coolant to flow to the gas engine and the radiator, and

수관을 통해 냉각수가 흐르도록 펌핑력을 발생시키는 냉각수 펌프가 마련되어 냉각수가 가스엔진에서 발생한 열을 흡수한 후 라디에이터에서 방출되도록 함으로써 가스엔진이 냉각될 수 있게 하는 것이다.A cooling water pump is provided to generate a pumping force to flow the cooling water through the water pipe so that the cooling engine absorbs the heat generated by the gas engine and then discharges it from the radiator, thereby allowing the gas engine to be cooled.

또한, 이러한 냉각장치에는 냉각수를 주입할 수 있도록 냉각수가 주입되는 주입구가 마련된 냉각수 주입부와, 가스 엔진의 초기 기동 시 가스엔진이 적정 온도 이하 일 경우 가스엔진을 예열하기 위하여 냉각수를 가열하는 냉각수 히터가 포함되어 있으며, 냉각수 히터에는 냉각장치 내의 압력이 과도하게 상승할 경우, 냉각수의 일부를 임시 저장하여 냉각장치 내의 압력을 일정수준으로 유지되게 하는 보조탱크가 냉각수관을 통해 연결되어 있다.In addition, such a cooling device is provided with a cooling water inlet provided with an inlet for cooling water to inject cooling water, and a cooling water heater for heating the cooling water to preheat the gas engine when the gas engine is below a suitable temperature at the initial start-up of the gas engine. The coolant heater includes an auxiliary tank connected through the coolant pipe to temporarily store a part of the coolant so that the pressure in the coolant is maintained at a constant level when the pressure in the coolant is excessively increased.

그러나, 종래 기술에 의한 가스 엔진 구동 히트펌프에 따르면, 엔진을 냉각하는 냉각수의 냉각을 위하여 별도의 장치(라디에이터 등)를 필요로 하므로 제조비용이 비싸지고 크기가 커지는 문제점이 있다.However, according to the gas engine driving heat pump according to the prior art, since a separate device (radiator, etc.) is required for cooling the cooling water for cooling the engine, there is a problem in that the manufacturing cost is high and the size is large.

그리고, 히트펌프의 실외기를 흐르는 냉매는 공기 등의 열교환매체와 열교환하게 되며, 실외기가 증발기로 사용될 때 외부 공기가 저온이기 때문에 냉매의 증발효율이 현저하게 떨어지고, 한편, 냉각수를 적정 온도로 유지하기 위해서 냉각장치가 커지는 문제점도 있다.
In addition, the refrigerant flowing through the outdoor unit of the heat pump exchanges heat with a heat exchange medium such as air, and when the outdoor unit is used as an evaporator, since the external air is low temperature, the evaporation efficiency of the refrigerant decreases remarkably, while maintaining the cooling water at an appropriate temperature. There is also a problem in that the cooling device is large.

본 발명은 전술한 바와 같은 문제점을 해결하기 위한 것으로, 엔진의 효율 증대를 위하여 엔진을 냉각하는 냉각수를 별도의 냉각장치없이 히트펌프 사이클을 이용하여 냉각할 수 있는 가스 엔진 구동 히트펌프를 제공하려는데 목적이 있다.The present invention is to solve the problems as described above, to provide a gas engine driven heat pump that can cool the cooling water for cooling the engine using a heat pump cycle without a separate cooling device to increase the efficiency of the engine There is this.

그리고, 본 발명의 다른 목적은 동절기에 외부 기온이 저온이더라도 고온의 냉각수의 열을 이용하여 냉매의 증발효율과 냉각수의 냉각효율을 증대하려는데 있다.Further, another object of the present invention is to increase the evaporation efficiency of the refrigerant and the cooling efficiency of the cooling water by using the heat of the high temperature cooling water even when the outside temperature is low temperature in winter.

전술한 바와 같은 목적을 달성하기 위한 본 발명에 따른 가스 엔진 구동 히트펌프는, 엔진과; 상기 엔진에 의해 구동하여 냉매를 고온고압으로 압축하는 압축기와; 실외에 배치되는 실외기와; 실내를 냉난방하는 실내기와; 상기 실외기 또는 실내기를 통과한 냉매를 감압하는 팽창밸브와; 냉매의 흐름방향을 제어하여 상기 압축기에 의해 압축된 냉매를 상기 실외기 또는 실내기로 유도함으로써 상기 실내기를 통해 실내의 냉난방이 이루어지도록 하는 사방밸브를 포함하고, 상기 실외기는, 입출구단이 상기 사방밸브와 팽창밸브에 각각 연결되며 냉매가 흐르는 냉매유로, 상기 엔진을 순환한 냉각수의 흐름을 안내하며 상기 냉매유로를 흐르는 냉매와 열교환하는 열교환매체에 의해 상기 냉각수를 냉각시키는 냉각수로를 포함하는 것을 특징으로 한다.Gas engine drive heat pump according to the present invention for achieving the object as described above, the engine; A compressor driven by the engine to compress the refrigerant at high temperature and high pressure; An outdoor unit disposed outdoors; An indoor unit for cooling and heating the room; An expansion valve for reducing the refrigerant passing through the outdoor unit or the indoor unit; A four-way valve configured to control the flow direction of the coolant to guide the refrigerant compressed by the compressor to the outdoor unit or the indoor unit to perform cooling and heating of the room through the indoor unit; Refrigerant flow paths respectively connected to the expansion valve and the refrigerant flows, characterized in that it comprises a cooling water passage for guiding the flow of the cooling water circulated through the engine and cooling the cooling water by a heat exchange medium that exchanges heat with the refrigerant flowing through the refrigerant flow path .

본 발명에 의한 가스 엔진 구동 히트펌프에 의하면, 엔진을 냉각하는 냉각수를 히트펌프 사이클의 냉매와 열교환하는 열교환매체와 열교환시켜 적정 온도로 냉각함으로써 냉각수의 냉각을 위한 별도의 냉각장치를 필요로 하지 않으므로 냉각장치를 위한 비용을 절감할 수 있고 제품의 크기를 축소할 수 있다.According to the gas engine driving heat pump according to the present invention, since the cooling water for cooling the engine is exchanged with a heat exchange medium for exchanging heat with the refrigerant of the heat pump cycle and cooled to an appropriate temperature, a separate cooling device for cooling the cooling water is not required. The cost for the chiller can be reduced and the size of the product can be reduced.

그리고, 엔진의 냉각수를 히트펌프 사이클의 열교환매체와 열교환시켜 특히 동절기에 열교환매체의 온도가 저온이더라도 냉각수의 열을 회수하여 냉매의 증발열로 사용함으로써 증발효율을 증대할 수 있는 한편 냉각수의 온도를 적정 수준으로 유지하여 히트펌프와 엔진의 성능을 향상할 수 있다.
The coolant of the engine is exchanged with the heat exchange medium of the heat pump cycle to recover the heat of the coolant and to use it as evaporative heat of the refrigerant even in the winter, even when the temperature of the heat exchange medium is low. By maintaining this level, the performance of the heat pump and engine can be improved.

도 1은 본 발명의 실시예 1에 의한 가스 엔진 구동 히트펌프의 계통도.
도 2는 본 발명의 실시예 2에 의한 가스 엔진 구동 히트펌프의 계통도.
도 3은 본 발명의 실시예 3에 의한 가스 엔진 구동 히트펌프의 계통도.1 is a system diagram of a gas engine driven heat pump according to Embodiment 1 of the present invention.
Figure 2 is a system diagram of a gas engine drive heat pump according to a second embodiment of the present invention.
Figure 3 is a system diagram of a gas engine drive heat pump according to a third embodiment of the present invention.

<실시예 1>&Lt; Example 1 >

도 1에서 보이는 바와 같이, 본 실시예에 의한 가스 엔진 구동 히트펌프는, 가스 엔진 등의 엔진(10)과; 엔진(10)에 의해 구동하여 냉매를 고온고압으로 압축하는 압축기(20)와; 실외에 배치되는 실외기(30)와; 실내를 냉난방하는 실내기(40)와; 실외기(40) 또는 실내기(30)를 통과한 냉매를 감압하는 팽창밸브(50)와; 냉매의 흐름방향을 제어하여 압축기(20)에 의해 압축된 냉매를 실외기(30) 또는 실내기(40)로 유도함으로써 실내기(40)를 통해 실내의 냉난방이 이루어지도록 하는 사방밸브(60)를 포함하고, 실외기(30)는 냉매의 열교환과 동시에 엔진(10)을 냉각하는 냉각수를 냉각시키는 기능을 겸하도록 구성된다.As shown in Fig. 1, the gas engine drive heat pump according to the present embodiment includes an engine 10 such as a gas engine; A compressor 20 driven by the engine 10 to compress the refrigerant at high temperature and high pressure; An outdoor unit 30 arranged outdoors; An indoor unit 40 for heating and cooling the room; An expansion valve 50 for reducing the refrigerant passing through the outdoor unit 40 or the indoor unit 30; By controlling the flow direction of the refrigerant to guide the refrigerant compressed by the compressor 20 to the outdoor unit 30 or the indoor unit 40 includes a four-way valve (60) for cooling and heating of the room through the indoor unit 40, , The outdoor unit 30 is configured to serve as a function of cooling the cooling water for cooling the engine 10 simultaneously with the heat exchange of the refrigerant.

엔진(10), 압축기(20), 실외기(40), 팽창밸브(50), 사방밸브(60)는 엔진 구동 히트펌프에서 사용되는 것과 동일하므로 구체적인 설명을 생략한다.The engine 10, the compressor 20, the outdoor unit 40, the expansion valve 50, and the four-way valve 60 are the same as those used in the engine driving heat pump, and thus detailed description thereof will be omitted.

실외기(30)는, 동절기에 난방시 증발기로 사용되고 하절기에 냉방시 응축기로 사용되도록 입출구단이 사방밸브(60)와 팽창밸브(50)에 각각 연결되며 냉매가 흐르는 냉매유로(31), 엔진(10)을 순환한 냉각수의 흐름을 안내하며 냉매유로(31)를 흐르는 냉매와 열교환하는 열교환매체(이하에서는 공기를 예로 들어 설명한다)에 의해 상기 냉각수를 냉각시키는 냉각수로를 포함한다.The outdoor unit 30 is connected to the four-way valve 60 and the expansion valve 50, respectively, so that the outdoor unit 30 is used as an evaporator when heating in winter and as a condenser when cooling in summer, and a refrigerant flow path 31 through which refrigerant flows and an engine ( And a cooling water passage for guiding the flow of the cooling water circulated through 10) and cooling the cooling water by a heat exchange medium (hereinafter, air will be described as an example) for exchanging heat with the refrigerant flowing through the refrigerant passage 31.

냉매유로(31)는 히트펌프의 용량에 따라 제원(수량, 길이, 단면적 등)이 달라진다.The refrigerant passage 31 has different specifications (quantity, length, cross-sectional area, etc.) according to the capacity of the heat pump.

상기 냉각수로는 상기 냉매와 공기의 열교환 특성, 실외기(30)의 기능(증발기, 응축기) 특성에 따라
The cooling water path according to the heat exchange characteristics of the refrigerant and air, the function (evaporator, condenser) of the outdoor unit 30

본 실시예에 의한 가스 엔진 구동 히트펌프의 작용은 다음과 같다.The operation of the gas engine driving heat pump according to the present embodiment is as follows.

1. 난방시.1. When heating.

엔진(10)은 가스를 연료로 구동하여 압축기(20)를 작동시킨다. 압축기(20)는 냉매를 고온고압으로 압축하며, 압축기(20)에 의해 압축된 냉매는 사방변(60) - 실내기(40) - 팽창밸브(50) - 실외기(30)(냉매유로(31))를 순환하며, 이때, 실내기(40)는 응축기로서 고온의 냉매가 통과하고, 실외기(30)는 증발기의 기능을 수행한다. 난방모드를 선택하면, 밸브(34)에 의해 제2냉각수로(33)는 폐쇄되고 제1냉각수로(32)만 개방된다.The engine 10 drives the compressor 20 by driving gas with fuel. The compressor 20 compresses the refrigerant at a high temperature and high pressure, and the refrigerant compressed by the compressor 20 has four sides 60-an indoor unit 40-an expansion valve 50-an outdoor unit 30 (the refrigerant passage 31). In this case, the indoor unit 40 passes through a high-temperature refrigerant as a condenser, and the outdoor unit 30 functions as an evaporator. When the heating mode is selected, the second cooling channel 33 is closed by the valve 34 and only the first cooling channel 32 is opened.

즉, 실내기(40)가 응축기로 사용되어 실내기(40) 내부에는 고온의 냉매가 흐르며, 실내에 공급되는 공기가 실내기(40)의 냉매와 열교환하여 고온으로 상승함으로써 실내를 난방할 수 있다.That is, since the indoor unit 40 is used as a condenser, a high temperature refrigerant flows inside the indoor unit 40, and the air supplied to the room heats up with the refrigerant of the indoor unit 40 to rise to a high temperature, thereby heating the room.

한편, 엔진(10)의 냉각수는 엔진(10)을 순환하면서 엔진(10)을 냉각하고 제1냉각수로(32)를 통과한 후 엔진(10)에 복귀한다.Meanwhile, the coolant of the engine 10 cools the engine 10 while circulating the engine 10 and passes through the first cooling water path 32 to return to the engine 10.

실외기(30)는 증발기로 사용되어 실외기(30) 내부에는 저온의 냉매가 흐르며, 냉매는 열교환매체인 공기와 열교환하여 증발하게 되는데, 공기는 제1냉각수로(32)를 흐르는 냉각수와 먼저 열교환하여 냉각수의 열을 빼앗음으로써 고온으로 상승한 후 냉매유로(31)를 흐르는 냉매와 열교환하여 상기 냉매를 증발시킨다.The outdoor unit 30 is used as an evaporator so that a low-temperature refrigerant flows inside the outdoor unit 30, and the refrigerant is evaporated by exchanging heat with air, which is a heat exchange medium. The air is first exchanged with the cooling water flowing through the first cooling channel 32. After the heat of the cooling water is taken up, the temperature rises to a high temperature, and then heat exchanges with the refrigerant flowing through the refrigerant passage 31 to evaporate the refrigerant.

즉, 냉매 측면에서 볼 때 냉매의 증발열원인 공기가 고온의 냉각수와 열교환하여 고온으로 상승하여 냉매의 증발열원을 더 확보하게 되므로 냉매의 증발효율을 높일 수 있고, 냉각수 측면에서 볼 때 동절기 차가운 공기와 열교환하여 엔진효율을 높일 수 있다.
In other words, the air that is the evaporation heat source of the coolant heats up with the high temperature cooling water and rises to a high temperature to secure the evaporation heat source of the coolant. Therefore, the evaporation efficiency of the coolant can be increased. Heat exchange can increase engine efficiency.

2. 냉방시.2. When cooling.

엔진(10)은 가스를 연료로 구동하여 압축기(20)를 작동시킨다. 압축기(20)는 냉매를 고온고압으로 압축하며, 압축기(20)에 의해 압축된 냉매는 사방변(60) - 실외기(30)(냉매유로(31)) - 팽창밸브(50) - 실내기(40)를 순환하며, 이때, 실내기(40)는 증발기로서 저온의 냉매가 통과하고, 실외기(30)는 응축기의 기능을 수행한다. 냉방모드를 선택하면, 밸브(34)에 의해 제2냉각수로(33)는 개방되고 제1냉각수로(32)는 폐쇄된다.The engine 10 drives the compressor 20 by driving gas with fuel. The compressor 20 compresses the refrigerant at a high temperature and high pressure, and the refrigerant compressed by the compressor 20 has four sides 60-an outdoor unit 30 (the refrigerant passage 31)-an expansion valve 50-an indoor unit 40. In this case, the indoor unit 40 passes through a low temperature refrigerant as an evaporator, and the outdoor unit 30 functions as a condenser. When the cooling mode is selected, the second cooling channel 33 is opened by the valve 34 and the first cooling channel 32 is closed.

즉, 실내기(40)가 증발기로 사용되어 실내기(40) 내부에는 저온의 냉매가 흐르며, 실내에 공급되는 공기가 실내기(40)의 냉매와 열교환하여 저온으로 낮아짐으로써 실내를 냉방할 수 있다.
That is, since the indoor unit 40 is used as an evaporator, a low temperature refrigerant flows inside the indoor unit 40, and the air supplied to the room is cooled to a low temperature by heat exchange with the refrigerant of the indoor unit 40, thereby cooling the room.

한편, 실외기(30)는 응축기로 사용되어 실외기(30) 내부에는 고온의 냉매가 흐르며, 냉매는 열교환매체인 공기와 열교환하여 증발하게 된다. 이후 공기는 냉매와 먼저 열교환한 후 제2냉각수로(33)를 흐르는 냉각수와 열교환하여 냉각수의 열을 빼앗음으로써 고온으로 상승하게 된다.Meanwhile, the outdoor unit 30 is used as a condenser so that a high temperature refrigerant flows inside the outdoor unit 30, and the refrigerant evaporates by heat exchange with air, which is a heat exchange medium. Thereafter, the air is first heat-exchanged with the refrigerant, and then heat-exchanges with the cooling water flowing through the second cooling water path 33, thereby desorbing the heat of the cooling water, thereby rising to a high temperature.

즉, 냉매 측면에서 볼 때 냉매의 응축열원인 공기가 상대적으로 저온인 냉매와 열교환하여 냉매의 응축이 정상적으로 이루어지고, 냉각수는 상대적으로 저온인 공기와 열교환하여 온도가 낮아짐으로써 엔진효율을 높일 수 있다.
That is, in terms of the refrigerant, the air that is the condensation heat source of the refrigerant exchanges heat with the relatively low temperature refrigerant to condense the refrigerant normally, and the coolant heat exchanges with the relatively low temperature air to lower the temperature, thereby improving engine efficiency.

<실시예 2><Example 2>

도 2에서 보이는 바와 같이, 본 실시예에 의한 가스 엔진 구동 히트펌프는, 냉방시 냉매와 열교환된 공기와 냉각수간의 전열면적을 크게 하여 냉각수의 온도를 효과적으로 낮추는 것으로, 제2냉각수로(33)에 보조냉각수로(33a)가 병렬로 연결된다. 보조냉각수로(33a)는 냉각수의 온도에 따라 밸브(V)에 의해 개폐될 수 있다. 미설명 부호 T는 냉각수의 온도를 감지하는 온도센서이다.As shown in FIG. 2, the gas engine driving heat pump according to the present embodiment increases the heat transfer area between the air exchanged with the refrigerant and the cooling water during cooling, thereby effectively lowering the temperature of the cooling water. The auxiliary cooling water passages 33a are connected in parallel. The auxiliary cooling water passage 33a may be opened and closed by the valve V according to the temperature of the cooling water. Reference numeral T is a temperature sensor for detecting the temperature of the coolant.

즉, 온도센서(T)의 감지값이 일정 온도 이하이면 밸브(V)를 통해 보조냉각수로(33a)를 폐쇄하여 냉매와 열교환된 공기가 제2냉각수로(33)의 냉각수와 열교환되도록 하고, 온도센서(T)의 감지값이 일정 온도 이상이면 밸브(V)를 통해 보조냉각수로(33a)를 개방하여 냉매와 열교환된 공기가 제2냉각수로(33) 및 보조냉각수로(33a)의 냉각수와 열교환되도록 함으로써 냉각수를 적정 온도로 낮춘다.That is, when the detected value of the temperature sensor T is below a predetermined temperature, the auxiliary cooling water channel 33a is closed through the valve V so that the air heat-exchanged with the refrigerant exchanges with the cooling water of the second cooling water channel 33. If the detected value of the temperature sensor T is equal to or higher than a predetermined temperature, the auxiliary cooling water channel 33a is opened through the valve V, and the air heat-exchanged with the refrigerant is cooled in the second cooling water channel 33 and the auxiliary cooling water channel 33a. The cooling water is lowered to an appropriate temperature by allowing heat exchange with the.

그 이외의 구성 및 작용은 전술한 실시예 1과 동일하므로 구체적인 설명을 생략한다.
Other configurations and operations are the same as those in the above-described first embodiment, so a detailed description thereof is omitted.

<실시예 3><Example 3>

도 3에서 보이는 바와 같이, 본 실시예에 의한 가스 엔진 구동 히트펌프는, 하절기에 엔진(10)을 냉각하여 온도가 높아진 고온의 냉각수의 열원으로 급탕수를 만들 수 있다는 데 특징이 있다.As shown in FIG. 3, the gas engine driving heat pump according to the present embodiment is characterized in that the hot water can be made from the heat source of the high temperature coolant whose temperature is increased by cooling the engine 10 in the summer.

엔진(10)의 냉각수로(미도시)와 실외기(30)의 제2냉각수로(33)는 급탕순환관(35)을 통해 연결된다. 급탕순환관(35)은 내부에 엔진(10)의 냉각수로에서 토출된 냉각수가 흐르며 탱크(36) 내부에 배관되어 탱크(36)에 저장된 물을 상기 냉각수와 열교환시켜 급탕수를 만든다.The cooling water passage (not shown) of the engine 10 and the second cooling water passage 33 of the outdoor unit 30 are connected through a hot water circulation pipe 35. The hot water circulation pipe 35 flows the cooling water discharged from the cooling water passage of the engine 10 and is piped inside the tank 36 to heat-exchange the water stored in the tank 36 with the cooling water to make the hot water.

이와 같이, 냉각수가 탱크(36)에 저장된 물과 열교환하여 온도가 낮아진 후 제2냉각수로(33)를 통과하면서 공기와 열교환되어 실시예 1보다 냉각효율이 증대될 수 있다.As such, after the coolant is heat-exchanged with the water stored in the tank 36 and the temperature is lowered, it is heat-exchanged with the air while passing through the second cooling water path 33, thereby increasing the cooling efficiency than the first embodiment.

본 실시예의 동절기 작동은 전술한 실시예 1과 동일하므로 구체적인 설명을 생략한다.Winter operation of the present embodiment is the same as the first embodiment described above, so a detailed description thereof will be omitted.

10 : 엔진, 20 : 압축기
30 : 실외기, 31 : 냉매유로
32,33 : 제1,2냉각수로, 34 : 밸브
40 : 실내기, 50 : 팽창밸브
60 : 사방밸브,10: engine, 20: compressor
30: outdoor unit, 31: refrigerant path
32,33: 1st, 2nd cooling water channel, 34: valve
40: indoor unit, 50: expansion valve
60: four-way valve,

Claims (4)

엔진(10)과; 상기 엔진에 의해 구동하여 냉매를 고온고압으로 압축하는 압축기(20)와; 실외에 배치되는 실외기(30)와; 실내를 냉난방하는 실내기(40)와; 상기 실외기 또는 실내기를 통과한 냉매를 감압하는 팽창밸브(50)와; 냉매의 흐름방향을 제어하여 상기 압축기에 의해 압축된 냉매를 상기 실외기 또는 실내기로 유도함으로써 상기 실내기를 통해 실내의 냉난방이 이루어지도록 하는 사방밸브(50)를 포함하고,
상기 실외기는, 입출구단이 상기 사방밸브와 팽창밸브에 각각 연결되며 냉매가 흐르는 냉매유로(31), 상기 엔진을 순환한 냉각수의 흐름을 안내하며 상기 냉매유로를 흐르는 냉매와 열교환하는 열교환매체에 의해 상기 냉각수를 냉각시키는 냉각수로를 포함하는 것을 특징으로 하는 가스 엔진 구동 히트펌프.An engine 10; A compressor (20) driven by the engine to compress the refrigerant at high temperature and high pressure; An outdoor unit 30 arranged outdoors; An indoor unit 40 for heating and cooling the room; An expansion valve 50 for reducing the refrigerant passing through the outdoor unit or the indoor unit; By controlling the flow direction of the refrigerant to guide the refrigerant compressed by the compressor to the outdoor unit or the indoor unit comprises a four-way valve (50) to perform the cooling and heating of the room through the indoor unit,
The outdoor unit may be connected to the four-way valve and the expansion valve, respectively, and the outdoor unit may include a refrigerant passage 31 through which a refrigerant flows, a heat exchange medium guiding the flow of cooling water circulating through the engine, and exchanging heat with the refrigerant flowing through the refrigerant passage. And a cooling water passage for cooling the cooling water. 청구항 1에 있어서, 상기 냉각수로는, 상기 열교환매체의 흐름방향을 기준으로 할 때 상기 냉매유로의 앞쪽에 배치되어 상기 열교환매체가 상기 냉각수를 냉각한 후 상기 냉매유로의 냉매와 열교환하도록 하는 제1냉각수로(32), 상기 냉매유로의 뒤쪽에 배치되어 상기 열교환매체가 상기 냉매유로의 냉매와 열교환한 후 상기 냉각수와 열교환시키는 제2냉각수(33), 냉각수가 상기 제1 또는 제2냉각수로에 공급되도록 제어하는 밸브(34)를 포함하여 구성된 것을 특징으로 하는 가스 엔진 구동 히트펌프.The first coolant passage of claim 1, wherein the cooling water passage is disposed in front of the refrigerant passage based on the flow direction of the heat exchange medium so that the heat exchange medium cools the cooling water and then exchanges heat with the refrigerant in the refrigerant passage. A cooling water channel 32 and a second cooling water 33 disposed at a rear side of the refrigerant flow path so that the heat exchange medium exchanges heat with the refrigerant in the refrigerant flow path, and then heat exchanges with the cooling water; Gas engine driven heat pump comprising a valve (34) for controlling to be supplied. 청구항 2에 있어서, 상기 제2냉각수로와 병렬로 연결되어 냉각수가 흐르는 보조냉각수로(33a)와; 상기 보조냉각수로를 개폐하는 밸브(V)와; 상기 엔진에서 토출되는 냉각수의 온도를 감지하는 온도센서(T)를 포함하여, 상기 온도센서의 감지값을 근거로 하여 상기 밸브를 통해 상기 보조냉각수로를 개폐하여 냉각수와 열교환매체와의 전열면적을 증대하는 것을 특징으로 하는 가스 엔진 구동 히트펌프.The auxiliary cooling water passage (33a) of claim 2, wherein the auxiliary cooling water passage (33a) is connected in parallel with the second cooling water passage and flows the cooling water; A valve (V) for opening and closing the auxiliary cooling channel; And a temperature sensor T for sensing the temperature of the coolant discharged from the engine, and opening and closing the auxiliary cooling channel through the valve based on the detected value of the temperature sensor to determine the heat transfer area between the coolant and the heat exchange medium. Gas engine drive heat pump, characterized in that to increase. 청구항 3에 있어서, 내부에 물이 저장되는 탱크(36)와; 상기 엔진의 냉각수로와 상기 제2냉각수로를 연결하면서 상기 탱크의 내부에 배관되어 상기 엔진의 냉각수로에서 토출된 냉각수의 열원을 통해 상기 탱크에 저장된 물을 가열하는 급탕순환관(35)이 포함된 것을 특징으로 하는 가스 엔진 구동 히트펌프.The tank of claim 3, further comprising: a tank (36) in which water is stored; A hot water circulation pipe 35 is connected to the cooling water passage of the engine and the second cooling water passage to heat the water stored in the tank through a heat source of the cooling water discharged from the cooling water passage of the engine. Gas engine drive heat pump, characterized in that.
KR1020100060840A 2010-06-25 2010-06-25 Gas engine heat pump KR101201212B1 (en)

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JPS58214762A (en) 1982-06-08 1983-12-14 小型ガス冷房技術研究組合 Engine driving type air conditioner
JPS61162772U (en) 1985-03-29 1986-10-08
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