KR100871320B1 - Oil-separator installed two-stage compression heat pump - Google Patents

Oil-separator installed two-stage compression heat pump Download PDF

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KR100871320B1
KR100871320B1 KR1020070035449A KR20070035449A KR100871320B1 KR 100871320 B1 KR100871320 B1 KR 100871320B1 KR 1020070035449 A KR1020070035449 A KR 1020070035449A KR 20070035449 A KR20070035449 A KR 20070035449A KR 100871320 B1 KR100871320 B1 KR 100871320B1
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South Korea
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oil
stage compressor
compressor
stage
oil separator
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KR1020070035449A
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Korean (ko)
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KR20080092071A (en
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이영수
백영진
김창민
박성룡
장기창
라호상
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한국에너지기술연구원
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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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
    • 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
    • F25B31/00—Compressor arrangements
    • F25B31/002—Lubrication
    • 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
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/075—Details of compressors or related parts with parallel compressors
    • F25B2400/0751—Details of compressors or related parts with parallel compressors the compressors having different capacities
    • 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
    • F25B2500/16—Lubrication

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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)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Abstract

본 발명은 오일분리기가 설치된 2단 압축 냉온열 제조 시스템에 관한 것으로서, 보다 상세하게는 하나의 시스템으로 냉난방을 수행할 수 있도록 제작된 2단압축 냉온열 제조시스템에서, 하계에는 단단 압축 운전을 하고, 동계에는 2단 압축 운전을 하며, 상기 각각의 압축기의 원활한 동작과 과부하를 방지하기 위해 오일을 공급해주는 오일분리기가 설치되는 오일분리기가 설치된 2단 압축 냉온열 제조 시스템에 관한 것이다.The present invention relates to a two-stage compressed cold and hot manufacturing system equipped with an oil separator, and more particularly, in a two-stage compressed cold and hot manufacturing system manufactured to perform cooling and heating in one system, the single stage compression operation in the summer In the winter season, a two-stage compression operation is performed, and a two-stage compressed cold and hot manufacturing system having an oil separator installed with an oil separator for supplying oil to prevent the smooth operation and overload of each compressor.

이러한, 본 발명은 하나의 시스템으로 냉방과 난방을 수행할 수 있도록 제작된 냉온열 제조장치로 플래시탱크와 증발기로 보내는 냉매의 과냉각도를 증가시킴으로써 냉각효과를 극대화하는 중간냉각기를 구비하며, 하계에는 시스템의 안정적인 운전을 위하여 저단 압축기만을 사용한 단단압축 냉방운전을 하며, 동계에는 고효율 운전을 위하여 저단 압축기와 고단압축기를 모두 사용하고, 플래시탱크와 중간냉각기를 분리하여 배치하며, 플래시탱크내에 냉매의 수위를 검출하는 센서인 수위검출센서와 플래시탱크에 냉매의 포화생태를 알려주는 증발기 압력센서가 형성되고, 상기 고단압축기와 저단압축기의 윤활작용을 위해 오일이 유입될 수 있도록 고단압축기 오일유입관과, 저단압축기 오일유입관이 각각 설치되며, 상기 각각의 오일유입관을 통해 오일을 분리하여 고단압축기와 저단압축기에 유입하는 오일분리기가 형성되고, 상기 오일분리기에서 각각의 압축기로 오일을 유입하기 위해 각각의 오일유입관에 전자밸브가 설치되는 것을 특징으로 하는 오일분리기가 설치된 2단 압축 냉온열 제조 시스템에 관한 것이다.Such, the present invention is provided with an intermediate cooler that maximizes the cooling effect by increasing the supercooling degree of the coolant to the flash tank and the evaporator produced in the cold and hot heat production apparatus that can be cooled and heated in one system, the summer For the stable operation of the system, single stage compressor cooling operation using only low stage compressor is used. In the winter season, both low stage compressor and high stage compressor are used for high efficiency operation, and the flash tank and the intermediate cooler are separated and the refrigerant level in the flash tank is arranged. A water level detection sensor, which is a sensor for detecting the pressure, and an evaporator pressure sensor for indicating the saturation ecology of the refrigerant in the flash tank are formed, and the high stage compressor oil inlet pipe for the oil to be introduced for lubrication of the high stage compressor and the low stage compressor; The low stage compressor oil inlet pipes are respectively installed, and each of the oil inlet pipes is The oil separator may be formed by separating the oil into the high stage compressor and the low stage compressor, and the solenoid valve may be installed at each oil inlet pipe to introduce oil from the oil separator to each compressor. It relates to a two-stage compressed cold and hot manufacturing system installed.

플래시탱크, 저단압축기, 고단압축기, 오일분리기, 2단압축 Flash tank, low stage compressor, high stage compressor, oil separator, two stage compression

Description

오일분리기가 설치된 2단 압축 냉온열 제조 시스템{OIL-SEPARATOR INSTALLED TWO-STAGE COMPRESSION HEAT PUMP }OIL-SEPARATOR INSTALLED TWO-STAGE COMPRESSION HEAT PUMP}

도 1은 본 발명의 제 1실시예에 따른 오일분리기가 설치된 2단 압축 냉온열 제조 시스템의 흐름도.1 is a flow chart of a two-stage compressed cold and hot manufacturing system equipped with an oil separator according to a first embodiment of the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

11: 저단압축기 12: 전자밸브11: low stage compressor 12: solenoid valve

13: 고단압축기 14: 응축기13: high stage compressor 14: condenser

15: 수액기 16: 중간냉각기15: Sap 16: Intercooler

17: 플래시탱크 18: 수위검출센서17: flash tank 18: water level sensor

19: 증발기 압력센서 21,23,24: 오일레벨센서19: Evaporator pressure sensor 21, 23, 24: Oil level sensor

25: 제어부 31,31': 역지밸브25: control part 31,31 ': check valve

35: 오일분리기 36: 전자밸브35: oil separator 36: solenoid valve

37: 전자밸브 38: 고단압축기 오일유입관37: solenoid valve 38: high stage compressor oil inlet pipe

39: 저단압축기 오일유입관 113, 117: 팽창변39: low stage compressor oil inlet pipe 113, 117: expansion valve

118: 증발기 119: 에규뮬레이터118: evaporator 119: emulator

본 발명은 오일분리기가 설치된 2단 압축 냉온열 제조 시스템에 관한 것으로서, 보다 상세하게는 하나의 시스템으로 냉난방을 수행할 수 있도록 제작된 2단압축 냉온열 제조시스템에서, 하계에는 단단 압축 운전을 하고, 동계에는 2단 압축 운전을 하며, 상기 각각의 압축기의 원활한 동작과 과부하를 방지하기 위해 오일을 공급해주는 오일분리기가 설치되는 오일분리기가 설치된 2단 압축 냉온열 제조 시스템에 관한 것이다.The present invention relates to a two-stage compressed cold and hot manufacturing system equipped with an oil separator, and more particularly, in a two-stage compressed cold and hot manufacturing system manufactured to perform cooling and heating in one system, the single stage compression operation in the summer In the winter season, a two-stage compression operation is performed, and a two-stage compressed cold and hot manufacturing system having an oil separator installed with an oil separator for supplying oil to prevent the smooth operation and overload of each compressor.

일반적으로 하나의 시스템으로 냉난방이 가능한 경우, 기존의 제품들은 에어컨디셔너와 전열기를 하나의 패키지에 넣은 형태이거나, 압축기를 한개만 사용한 히트펌프형 냉난방기를 기본으로 하는 것들이다.In general, when a single system can be heated and cooled, existing products are in the form of air conditioner and heater in one package, or those based on a heat pump type air conditioner using only one compressor.

그러나, 전자와 같이 에어컨디셔너와 전열기를 하나의 패키지에 넣은 형태인 경우, 난방 열량을 얻기 위한 에너지 소모가 매우 과다하며, 후자와 같이 에너지를 절약할 수 있는 히트펌프형 냉난방기라고 하더라도 동계 운전시 열원의 온도가 저하하면, 증발 압력저하와 함께 과도한 압축비로 운전되어 압축기의 운전효율이 감소하며, 시스템 순환 유량 감소에 따른 난방 능력 감소에 의하여 결국 시스템 효율이 감소하며, 시스템 순환 유량 감소에 따른 난방 능력 감소에 의하여 결국 시스템 효율이 저하하게 된다. However, when the air conditioner and the heater are put in one package like the former, the energy consumption for heating heat is excessively high. When the temperature decreases, the operation efficiency of the compressor decreases as the evaporation pressure decreases and the excessive compression ratio decreases. In the end, the system efficiency decreases due to the decrease in the heating capacity due to the decrease in the system circulation flow rate, and the heating capacity decreases due to the decrease in the system circulation flow rate. As a result, the system efficiency is lowered.

또한, 증발 압력이 저하하면 압축기 토출구 냉매온도가 과도하게 상승할 우려가 있으므로, 시스템의 안전에도 좋지 않은 영향을 끼칠 수 있다.In addition, if the evaporation pressure is lowered, the compressor discharge port refrigerant temperature may be excessively increased, which may adversely affect the safety of the system.

또한, 2단압축 냉온열제조시스템에 사용되는 밸브를 삼방변밸브를 사용하여 비용이 많이 들었으며, 단단/다단 운전 및 부하율이 커지므로 압축기의 원활한 작동이 어려웠다.In addition, the valve used in the two-stage compression cold and hot manufacturing system using a three-way valve is expensive, and the single-stage / multi-stage operation and load ratio is increased, it was difficult to operate the compressor smoothly.

본 발명은 상기와 같은 문제점을 해결하기 위해 안출된 것으로서, 상기 2단압축 삼방변밸브 대신 전자밸브를 설치하여 제작비용을 절감하며, 각각의 압축기에 오일을 공급할 수 있도록 오일분리기가 설치되어 제어부에 의해 오일을 각각의 압축기에 공급함으로써 단단/다단 운전 여부 및 부하율 등에 관계없이 항상 압축기의 원활한 작동을 할 수 있는 오일분리기가 설치된 2단 압축 냉온열 제조 시스템을 제공하는 데 있다.The present invention has been made to solve the above problems, install a solenoid valve instead of the two-stage three-way valve to reduce the manufacturing cost, oil separator is installed to supply oil to each compressor to the control unit The present invention provides a two-stage compression cold / hot manufacturing system equipped with an oil separator capable of smoothly operating the compressor at all times by supplying oil to each compressor.

본 발명은 상기의 목적을 달성하기 위해 아래의 특징을 갖는다.The present invention has the following features to achieve the above object.

이러한, 본 발명은 하나의 시스템으로 냉방과 난방을 수행할 수 있도록 제작된 냉온열 제조장치로 플래시탱크와 증발기로 보내는 냉매의 과냉각도를 증가시킴으로써 냉각효과를 극대화하는 중간냉각기를 구비하며, 하계에는 시스템의 안정적인 운전을 위하여 저단 압축기만을 사용한 단단압축 냉방운전을 하며, 동계에는 고 효율 운전을 위하여 저단 압축기와 고단압축기를 모두 사용하고, 플래시탱크와 중간냉각기를 분리하여 배치하며, 플래시탱크내에 냉매의 수위를 검출하는 센서인 수위검출센서와 플래시탱크에 냉매의 포화생태를 알려주는 증발기 압력센서가 형성되고, 상기 고단압축기와 저단압축기의 윤활작용을 위해 오일이 유입될 수 있도록 고단압축기 오일유입관과, 저단압축기 오일유입관이 각각 설치되며, 상기 각각의 오일유입관을 통해 오일을 분리하여 고단압축기와 저단압축기에 유입하는 오일분리기가 형성되고, 상기 오일분리기에서 각각의 압축기로 오일을 유입하기 위해 각각의 오일유입관에 전자밸브가 설치되며, 상기 오일분리기에서 배출되는 오일을 고단압축기와 저단압축기로 선택적으로 공급하기 위해 고단압축기와 오일분리기 저단압축기의 신호를 입력하고 각각의 전자밸브로 출력하여 전자밸브를 개폐할 수 있도록 제어부가 설치되고, 상기 오일분리기는 각각의 압축기에 오일의 양을 알 수 있도록 오일 레벨 센서가 부착되며, 상기 오일분리기의 일측에 오일분리기 오일 레벨 센서가 부착되어 오일분리기 내부의 오일이 고갈되면 모든 시스템이 정지되고, 상기 각각의 압축기에 오일을 공급한 후 채터링을 방지하기 위해 각각의 전자밸브 폐쇄를 지연하며, 상기 각각의 압축기에서 냉매가 응축기로 유동시 오일이나 냉매가 역류하지 않도록 역지밸브가 설치되고, 냉/난방 운전 선택시 사용되는 밸브는 전자밸브를 사용하며, 상기 냉/난방 운전 선택시 전자밸브가 폐쇄되면 냉방운전이 되고, 상기 전자밸브가 개방되면 난방운전이 되는 것을 특징으로 하는 오일분리기가 설치되는 것을 특징으로 한다.Such, the present invention is provided with an intermediate cooler that maximizes the cooling effect by increasing the supercooling degree of the coolant to the flash tank and the evaporator produced in the cold and hot heat production apparatus that can be cooled and heated in one system, the summer For the stable operation of the system, single stage compressor cooling operation using only low stage compressor is used. In the winter season, both low stage compressor and high stage compressor are used for high efficiency operation. The water level detection sensor, which is a sensor for detecting the water level, and the evaporator pressure sensor for indicating the saturation ecology of the refrigerant in the flash tank are formed, and the high stage compressor oil inlet pipe for lubricating the high stage compressor and the low stage compressor. , The low stage compressor oil inlet pipe is installed, respectively An oil separator is formed to separate the oil into the high stage compressor and the low stage compressor, and a solenoid valve is installed at each oil inlet pipe to introduce oil from the oil separator to each compressor, and is discharged from the oil separator. In order to selectively supply oil to the high stage compressor and the low stage compressor, a control unit is installed to input and output signals of the high stage compressor and the oil separator low stage compressor to the respective solenoid valves to open and close the solenoid valves. An oil level sensor is attached to the compressor so that the amount of oil can be detected. An oil separator oil level sensor is attached to one side of the oil separator, and when the oil in the oil separator is depleted, all the systems are stopped. Delay the closing of each solenoid valve to prevent chattering after supplying In each compressor, a check valve is installed so that oil or refrigerant does not flow back when the refrigerant flows to the condenser, and the solenoid valve is closed when the cooling / heating operation is selected, and the solenoid valve is closed when the cooling / heating operation is selected. When the cooling operation is performed, the oil separator is characterized in that the heating operation is installed when the solenoid valve is opened.

이와 같은 특징을 갖는 본 발명은 그에 따른 바람직한 실시예를 통해 보다 명확히 설명될 수 있을 것이다. 이하에서는 본 발명의 바람직한 실시예를 첨부된 도면에 의거하여 상세히 설명하도록 한다The present invention having such a feature will be more clearly described through the preferred embodiment accordingly. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1을 참조하면, 본 발명의 오일분리기가 설치된 2단 압축 냉온열 제조 시스템의 흐름도로서, 먼저 구성을 설명하면 다음과 같다.Referring to Figure 1, as a flow chart of a two-stage compressed cold and hot production system is installed oil separator of the present invention, first described as follows.

하계운전 모드에 있어서, 냉수를 제조한 후 어큐물레이터(119)(보일러 증기를 축적해서 필요시 방출하는 장치)를 통하여 저단압축기(11)에서 압축된 냉매는 응축기(14)로 유입된다.In the summer operation mode, the refrigerant compressed in the low stage compressor 11 flows into the condenser 14 through the accumulator 119 (an apparatus for accumulating and discharging the boiler vapor if necessary) after producing cold water.

이렇게, 응축기(14)로 유입된 냉매는 히트씽크(124)와 열교환을 하여 응축된 냉매가 수액기(15)에 모이고, 상기 수액기(15)에서 중간냉각기(16)를 지난 후 주 냉매라인 팽창변(117)을 통과하면서 팽창하여 증발기(118)로 유입되어 다시 냉수(123)를 제조하게 된다.In this way, the refrigerant introduced into the condenser 14 exchanges heat with the heat sink 124, and the condensed refrigerant collects in the receiver 15, and after passing through the intermediate cooler 16, the main refrigerant line in the receiver 15. It expands while passing through the expansion valve 117 and enters the evaporator 118 to manufacture cold water 123 again.

또한, 동계운전 모드에 있어서, 열원수(122)에서 열을 흡수한 후 어큐뮬레이터(119)를 통과하여 저단압축기(11)에 유입된 냉매는 압축되어 전자밸브(12)를 거쳐 플래시탱크(117)로 유입된다.In addition, in the winter operation mode, after absorbing heat from the heat source water 122 and passing through the accumulator 119, the refrigerant introduced into the low stage compressor 11 is compressed to pass through the solenoid valve 12 to the flash tank 117. Flows into.

이와 동시에 응축기(14)와 수액기(15) 및 전자밸브(12)를 지난 고압 액냉매의 일부가 부 냉매라인인 팽창변(113)을 통과한 후, 플래시탱크(17)로 유입되며, 상기 플래시탱크(17)의 상부에 모인 포화기체는 고단압축기(13)에서 다시 압축된 후 응축기(14)를 지나면서 고온수(125)를 제조한 후, 수액기(15)에 모였다가 중간 냉각기(16)를 통과한 후, 팽창변(117)을 통과하면서 팽창하여 열원수(122)에서 열 을 흡수하기 위하여 증발기(118)로 유입된다.At the same time, a portion of the high pressure liquid refrigerant passing through the condenser 14, the receiver 15, and the solenoid valve 12 passes through the expansion valve 113, which is a secondary refrigerant line, and then flows into the flash tank 17. Saturated gas collected in the upper part of the tank 17 is compressed again in the high stage compressor (13) and then produced the hot water (125) through the condenser (14), gathered in the receiver (15) and then the intermediate cooler (16) After passing through), it expands while passing through the expansion valve 117 and enters the evaporator 118 to absorb heat from the heat source water 122.

이상과 같은 2단 압축 과정에 있어서, 상기 저단압축기(11)와 고단압축기(13)의 운동시 발생되는 과부화를 방지하기 위해 각각의 압축기(11,13)에 오일을 공급하여 과부하를 방지할 수 있도록, 오일분리기(35)가 설치된다.In the two-stage compression process as described above, it is possible to prevent the overload by supplying oil to each of the compressors (11, 13) in order to prevent the overload generated during the movement of the low-stage compressor (11) and the high-stage compressor (13). Oil separator 35 is installed.

이러한, 상기 오일분리기(35)는 저단압축기(11)와 고단압축기(13)에 오일을 공급할 수 있도록 고단압축기 오일유입관(38)과, 저단압축기 오일유입관(39)이 연결되며, 상기 고단압축기(13)와 저단압축기(11)의 일측에 오일레벨센서(21,23)가 부착되어 각가의 압축기(11,13) 내부의 오일량을 알 수 있다.The oil separator 35 is connected to the high stage compressor oil inlet pipe 38 and the low stage compressor oil inlet pipe 39 so as to supply oil to the low stage compressor 11 and the high stage compressor 13. Oil level sensors 21 and 23 are attached to one side of the compressor 13 and the low stage compressor 11 so that the amount of oil inside the compressors 11 and 13 can be known.

또한, 상기 각각의 압축기(11,13)에 부착된 한쌍의 오일레벨센서(21,23)에 의해 각각의 압축기(11,13) 내부의 오일양을 확인 후 오일분리기(35)에서 선택적으로 각각의 오일유입관(38,39)을 통해 고단압축기(13)와 저단압축기(11)로 오일을 공급해주게 된다.In addition, after confirming the amount of oil inside each compressor (11, 13) by a pair of oil level sensors (21, 23) attached to the respective compressor (11, 13), the oil separator (35) selectively Oil is supplied to the high stage compressor (13) and the low stage compressor (11) through the oil inlet pipe (38,39).

그리고, 상기 오일분리기(35)에서 각각의 압축기(11,13)로 오일을 공급해주기 위해 제어부(25)가 설치되어 각각의 오일레벨센서(21,23)에서 제어부(25)로 신호를 입력하게 되고, 오일의 양이 입력된 제어부(25)에서 각각의 압축기(11,13)의 오일 수위가 부족할 경우 신호를 각각의 전자밸부(36,37)에 출력하여 전자밸브(36,37)가 작동함으로써 오일을 각각의 압축기(11,13)로 공급하게 된다.In addition, a control unit 25 is installed to supply oil from the oil separator 35 to each of the compressors 11 and 13 so as to input a signal from the respective oil level sensors 21 and 23 to the control unit 25. When the oil level of the compressors 11 and 13 is insufficient in the controller 25 in which the amount of oil is input, a signal is output to each of the solenoid valves 36 and 37 to operate the solenoid valves 36 and 37. As a result, oil is supplied to each of the compressors 11 and 13.

또한, 상기 오일분리기(35)에도 오일레벨센서(24)가 부착되어 오일분리기(35) 내부의 오일의 수위를 알아볼 수 있고, 상기 오일레벨센서(24)에 의해 측정된 오일분리기(35) 내부의 오일이 고갈될 경우 2단 압축 냉온열 제조 시스템이 정 지되어 과부하에 의한 각각의 압축기(11,13)의 파손을 방지할 수 있게 된다.In addition, an oil level sensor 24 may be attached to the oil separator 35 to determine the level of oil in the oil separator 35, and may be measured in the oil separator 35 measured by the oil level sensor 24. When the oil is depleted, the two-stage compression cold and hot manufacturing system is stopped to prevent the breakage of each compressor (11, 13) due to overload.

상기 2단 압축 냉온열 제조 시스템에 사용되는 밸브의 종류는 전자밸브(21,36,37)와 역지밸브(31,31') 가 사용되는데 이러한, 전자밸브(12,36,37)는 기존의 삼방향밸브에 비해 제작단가가 저렴한 장점이 있으며, 상기 전자밸브(12)에 의한 냉/난방 운전 선택은 전자밸브(12)가 OFF상태이면 냉방운전이 이루어지고, 상기 전자밸브(12)가 ON상태일 경우는 난방운전이 이루어지게 된다.Types of valves used in the two-stage compression cold / hot manufacturing system are solenoid valves 21, 36, 37 and check valves 31, 31 ′. These solenoid valves 12, 36, 37 are conventionally used. Compared to the three-way valve, the manufacturing cost is low, and the cooling / heating operation selection by the solenoid valve 12 is performed when the solenoid valve 12 is in the OFF state, and the solenoid valve 12 is ON. If the state is heating operation is made.

또한, 상기 오일분리기(35)의 동작원리는 오일레벨센서(24)에서 알람이 울리게 되면 전자밸브(36,37)가 개방되어 오일을 공급하게 되고, 상기 각각의 압축기(11,13)에 오일을 보충 후 채터링(전자 회로 내의 스위치나 계전기의 접점이 붙거나 떨어질 때 기계적인 진동에 의해 실제로는 매우 짧은 시간 안에 접점이 붙었다가 떨어지는 것을 반복하는 현상 이는 회로에 나쁜 영향을 끼치므로 제거해야 한다.) 을 방지하기 위해 각각의 전자밸브(36,37)에 딜레이를 주어 폐쇄한다. In addition, the principle of operation of the oil separator 35 is that when the alarm occurs at the oil level sensor 24, the solenoid valves 36 and 37 are opened to supply oil, and the oil is supplied to the respective compressors 11 and 13. After replenishment, chattering (the phenomenon of repeated contact and dropping of the contact in a very short time due to mechanical vibration when the contact of the switch or relay in the electronic circuit attaches or falls, which is bad for the circuit and should be removed. To prevent closing of each solenoid valve (36,37).

그리고, 상기 역지밸브(31,31')는 고단압축기(13)와 저단압축기(11)에서 냉매가 오일분리기(35)를 통과하여 응축기(14)로 유동하게 되는데 이렇게 오일분리기(35)로 냉매가 유입되는 관에는 역지밸브(31,31')(수직 또는 수평배관의 도중에 설치되어 유체의 역류를 방지하는 밸브)가 설치된다. In addition, the check valves 31 and 31 ′ allow the refrigerant in the high stage compressor 13 and the low stage compressor 11 to flow through the oil separator 35 to the condenser 14, and thus the refrigerant to the oil separator 35. Check valves 31 and 31 '(valve installed in the middle of the vertical or horizontal pipe to prevent the backflow of fluid) are installed in the pipe into which the water is introduced.

이상에서 살펴본 바와 같이, 본 발명에 사용되는 밸브를 전자밸로 설치하여 제작비용을 절감할 수 있으며, 오일분리기를 설치하여 각각의 밸브에 오일을 공급 해 줌으로써 단단/다단 운전 여부 및 부하율등에 관계 없이 항상 압축기의 작동이 원활한 효과가 있다.As described above, it is possible to reduce the manufacturing cost by installing the valve used in the present invention as an electronic bell, and by installing an oil separator to supply oil to each valve regardless of whether single-stage / multi-stage operation and load rate The compressor always works smoothly.

Claims (8)

하나의 시스템으로 냉방과 난방을 수행할 수 있도록 제작된 냉온열 제조장치로 플래시탱크(17)와 증발기(118)로 보내는 냉매의 과냉각도를 증가시킴으로써 냉각효과를 극대화하는 중간냉각기(16)를 구비하며, 하계에는 시스템의 안정적인 운전을 위하여 저단압축기만(11)을 사용한 단단압축 냉방운전을 하며, 동계에는 고효율 운전을 위하여 저단압축기(11)와 고단압축기(13)를 모두 사용하고, 플래시탱크(17)와 중간냉각기(16)를 분리하여 배치하며, 플래시탱크(17) 내에 냉매의 수위를 검출하는 센서인 수위검출센서(18)와 플래시탱크(17)에 냉매의 포화생태를 알려주는 증발기 압력센서(19)가 형성되고, 상기 고단압축기(13)와 저단압축기(11)의 윤활작용을 위해 오일이 유입될 수 있도록 고단압축기 오일유입관(38)과, 저단압축기 오일유입관(39)이 설치되며, 상기 각각의 오일유입관(38,39)을 통해 오일을 분리하여 고단압축기(13)와 저단압축기(11)에 유입하는 오일분리기(35)가 형성되고, 상기 오일분리기(35)에서 각각의 압축기(11,13)로 오일을 유입하기 위해 각각의 오일유입관(38,39)에 전자밸브(36,37)가 설치되는 것을 특징으로 하는 오일분리기가 설치된 2단 압축 냉온열 제조 시스템.Cold and heat manufacturing apparatus manufactured to perform cooling and heating in one system is provided with an intermediate cooler (16) to maximize the cooling effect by increasing the supercooling of the refrigerant to the flash tank (17) and the evaporator (118) In the summer, a single stage cooling operation using only the low stage compressor (11) is performed for stable operation of the system. In the winter season, both the low stage compressor (11) and the high stage compressor (13) are used for high efficiency operation. 17) and the intermediate cooler 16 are disposed separately, and the evaporator pressure for notifying the saturation of the refrigerant to the water level detection sensor 18 and the flash tank 17, which are sensors for detecting the level of the refrigerant in the flash tank 17. A sensor 19 is formed, and the high stage compressor oil inlet pipe 38 and the low stage compressor oil inlet pipe 39 are provided so that oil can flow in for lubrication of the high stage compressor 13 and the low stage compressor 11. Installed, said An oil separator 35 is formed to separate the oil through each of the oil inflow pipes 38 and 39 and flows into the high stage compressor 13 and the low stage compressor 11. 11, 13) The two-stage compression cold and hot manufacturing system is installed, characterized in that the solenoid valve (36, 37) is installed in each oil inlet pipe (38,39) to introduce oil into. 제 1항에 있어서,The method of claim 1, 상기 오일분리기(35)에서 배출되는 오일을 고단압축기(13)와 저단압축기(11) 에 선택적으로 공급하기 위해 고단압축기(13)와 저단압축기(11)의 신호를 입력하고 각각의 전자밸브(36,37)로 출력하여 전자밸브(36,37)를 개폐할 수 있도록 제어부(25)가 설치되는 것을 특징으로 하는 오일분리기가 설치된 2단 압축 냉온열 제조 시스템.In order to selectively supply the oil discharged from the oil separator 35 to the high stage compressor 13 and the low stage compressor 11, the signals of the high stage compressor 13 and the low stage compressor 11 are input and the respective solenoid valves 36 are provided. , 37) two-stage compression cold and hot production system is installed, characterized in that the control unit 25 is installed to open and close the solenoid valve (36,37). 제 1항 또는 2항에 있어서,The method according to claim 1 or 2, 상기 오일분리기(35)는 각각의 압축기(11,13)에 오일의 양을 검출할 수 있도록 오일레벨센서(21,23)가 부착되는 것을 특징으로 하는 오일분리기가 설치된 2단 압축 냉온열 제조 시스템.The oil separator 35 is a two-stage compression cold and hot manufacturing system equipped with an oil separator, characterized in that the oil level sensor (21, 23) is attached to each compressor (11, 13) to detect the amount of oil. . 제 3항에 있어서,The method of claim 3, wherein 상기 오일분리기(35)의 일측에 오일레벨센서(24)가 부착되어 오일분리기(35) 내부의 오일이 부족하면 각각의 압축기(11,13)가 정지되는 것을 특징으로 하는 오일분리기가 설치된 2단 압축 냉온열 제조 시스템.The oil level sensor 24 is attached to one side of the oil separator 35 so that the compressors 11 and 13 are stopped when the oil inside the oil separator 35 is insufficient. Compression hot and cold manufacturing system. 제 4항에 있어서,The method of claim 4, wherein 상기 각각의 압축기(11,13)에 오일을 공급한 후 채터링을 방지하기 위해 각 각의 전자밸브(36,37) 폐쇄시간을 지연하는 것을 특징으로 하는 오일분리기가 설치된 2단 압축 냉온열 제조 시스템.After the oil is supplied to each of the compressors 11 and 13, two-stage compression cold and hot manufacturing with an oil separator, characterized in that the delay time of closing the respective solenoid valves 36 and 37 to prevent chattering. system. 제 4항에 있어서,The method of claim 4, wherein 상기 각각의 압축기(11,13)에서 냉매가 응축기(14)로 유동시 오일이나 냉매가 역류하지 않도록 역지밸브(31,31')가 설치되는 것을 특징으로 하는 오일분리기가 설치된 2단 압축 냉온열 제조 시스템.Two-stage compressed cold and hot heat provided with an oil separator, characterized in that check valves (31, 31 ') are installed to prevent oil or refrigerant from flowing back when the refrigerant flows from the compressor (11, 13) to the condenser (14). Manufacturing system. 삭제delete 삭제delete
KR1020070035449A 2007-04-11 2007-04-11 Oil-separator installed two-stage compression heat pump KR100871320B1 (en)

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CN105042915A (en) * 2015-07-27 2015-11-11 湖南大学 Refrigerating system with oil cooling compression circulation and air supplementing enthalpy increasing circulation
CN112682986B (en) * 2021-01-11 2024-03-22 珠海格力电器股份有限公司 Flash type oil cooling system and control method
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