KR100724384B1 - Compressor with oil heating function - Google Patents

Compressor with oil heating function Download PDF

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Publication number
KR100724384B1
KR100724384B1 KR1020050042222A KR20050042222A KR100724384B1 KR 100724384 B1 KR100724384 B1 KR 100724384B1 KR 1020050042222 A KR1020050042222 A KR 1020050042222A KR 20050042222 A KR20050042222 A KR 20050042222A KR 100724384 B1 KR100724384 B1 KR 100724384B1
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KR
South Korea
Prior art keywords
oil
refrigerant
compressor
unit
casing
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KR1020050042222A
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Korean (ko)
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KR20060119317A (en
Inventor
오정언
김성환
장세동
윤필현
정백영
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엘지전자 주식회사
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Priority to KR1020050042222A priority Critical patent/KR100724384B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/028—Means for improving or restricting lubricant flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/04—Heating; Cooling; Heat insulation
    • F04C29/045—Heating; Cooling; Heat insulation of the electric motor in hermetic pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/40—Electric motor
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

Abstract

본 발명은 오일가열기능을 구비한 압축기에 관한 것으로서, 내부에 수용공간을 형성하며 저부에 오일을 수용할 수 있도록 오일수용부가 형성되는 케이싱과; 상기 케이싱의 내부에 수용되어 냉매를 압축하는 압축부와; 상기 케이싱의 내부에 수용되어 상기 압축부에 구동력을 제공하는 전동모터부와; 상기 오일수용부에 수용된 오일과 접촉되게 배치되는 열교환부와, 일 측은 상기 압축부의 토출측에 연결되고 타 측은 상기 열교환부를 경유하여 실외열교환기의 유출측과 상기 압축부의 흡입측 사이에 연결되는 냉매공급유로를 구비하여 상기 오일을 가열하는 오일가열부를 포함하는 것을 특징으로 한다. 이에 의해, 외기 온도 저하에 기인한 압축기의 오일부족현상을 방지할 수 있는 오일가열기능을 구비한 압축기가 제공된다. The present invention relates to a compressor having an oil heating function, comprising: a casing in which an oil receiving portion is formed to form an accommodating space therein and to receive oil at a bottom thereof; A compression unit accommodated in the casing to compress the refrigerant; An electric motor unit accommodated in the casing and providing a driving force to the compression unit; A heat exchange part disposed to be in contact with the oil contained in the oil receiving part, and one side is connected to the discharge side of the compression part, and the other side is supplied to the refrigerant between the outlet side of the outdoor heat exchanger and the suction side of the compression part via the heat exchange part. It characterized in that it comprises an oil heating unit for heating the oil having a flow path. Thereby, the compressor provided with the oil heating function which can prevent the oil shortage of a compressor resulting from the fall of external air temperature is provided.

Description

오일가열기능을 구비한 압축기{COMPRESSOR WITH OIL HEATING FUNCTION}COMPRESSOR WITH OIL HEATING FUNCTION}

도 1은 종래의 압축기를 구비한 냉동사이클 구성도, 1 is a configuration of a refrigeration cycle having a conventional compressor,

도 2는 도 1의 압축기의 단면도,2 is a cross-sectional view of the compressor of FIG.

도 3은 본 발명의 일 실시예에 따른 오일가열기능을 구비한 압축기가 적용된 냉동사이클 구성도, 3 is a configuration of a refrigeration cycle to which a compressor with an oil heating function according to an embodiment of the present invention is applied;

도 4는 도 3의 제어블록도, 4 is a control block diagram of FIG.

도 5는 본 발명의 다른 실시예에 따른 오일가열기능을 구비한 압축기가 적용된 냉동사이클 구성도, 5 is a configuration of a refrigeration cycle to which a compressor with an oil heating function according to another embodiment of the present invention is applied;

도 6은 도 5의 판형유니트의 단면도이다.6 is a cross-sectional view of the plate-shaped unit of FIG.

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

131 : 실외열교환기 141 : 실내열교환기131: outdoor heat exchanger 141: indoor heat exchanger

143 : 실내팽창장치 151 : 압축기143: indoor expansion device 151: compressor

152 : 케이싱 155 : 압축부152: casing 155: compression

157 : 전동모터부 159 : 오일수용부157: electric motor part 159: oil receiving part

171 : 오일가열부 176 : 코일유니트171: oil heating unit 176: coil unit

181 : 오일공급유로 185 : 유로개폐밸브181: oil supply passage 185: flow path opening and closing valve

187 : 온도검출센서 191 : 제어부187: temperature detection sensor 191: control unit

본 발명은, 오일가열기능을 구비한 압축기에 관한 것으로서, 더욱 상세하게는, 외기 온도 저하에 기인한 압축기의 오일부족현상을 방지할 수 있도록 한 오일가열기능을 구비한 압축기에 관한 것이다. The present invention relates to a compressor having an oil heating function, and more particularly, to a compressor having an oil heating function that can prevent oil shortage of the compressor due to a decrease in ambient temperature.

도 1은 종래의 압축기를 구비한 냉동사이클 구성도이고, 도 2는 도 1의 압축기의 단면도이다. 도 1에 도시된 바와 같이, 증기압축식 냉동사이클은, 냉매를 압축하는 압축기(111)와, 냉매가 방열을 통해 응축되는 실외열교환기(131)와, 냉매가 실내공기와 열교환되면서 냉방 또는 난방 작용을 수행하는 실내열교환기(141)를 포함하여 구성되어 있다.1 is a configuration of a refrigeration cycle having a conventional compressor, Figure 2 is a cross-sectional view of the compressor of FIG. As shown in FIG. 1, the vapor compression refrigeration cycle includes a compressor 111 for compressing a refrigerant, an outdoor heat exchanger 131 where the refrigerant is condensed through heat radiation, and cooling or heating while the refrigerant is heat-exchanged with indoor air. It is configured to include an indoor heat exchanger 141 to perform the action.

압축기(111)의 흡입측에는 기체상태의 냉매를 흡입할 수 있도록 어큐뮬레이터(125)가 상호 연통되게 연결되어 있으며, 압축기(111)의 토출측에는 냉매의 유로를 절환할 수 있도록 유로절환밸브(121)가 설치되어 있다.The accumulator 125 is connected to the suction side of the compressor 111 so as to suck the refrigerant in the gas state, and the flow path switching valve 121 is connected to the discharge side of the compressor 111 so as to switch the flow path of the refrigerant. It is installed.

냉매의 유동방향을 따라 실외열교환기(131)의 일측에는 체크밸브(135) 및 실외팽창장치(136)가 구비되어 있으며, 실외열교환기(131)의 일측에는 냉매의 열교환이 촉진될 수 있도록 냉각팬(132)이 구비되어 있다. 냉매의 유동방향을 따라 실내열교환기(141)의 일측에는 냉매가 감압팽창될 수 있도록 실내팽창장치(143)가 설치되어 있으며, 실내열교환기(141)의 일측에는 열교환된 실내공기를 송풍할 수 있도록 송풍팬(145)이 설치되어 있다. One side of the outdoor heat exchanger 131 is provided with a check valve 135 and an outdoor expansion device 136 along the flow direction of the refrigerant, and one side of the outdoor heat exchanger 131 is cooled to promote heat exchange of the refrigerant. A fan 132 is provided. An indoor expansion device 143 is installed on one side of the indoor heat exchanger 141 along the flow direction of the refrigerant to allow the refrigerant to expand under reduced pressure, and one side of the indoor heat exchanger 141 may blow heat exchanged indoor air. Blowing fan 145 is installed.

압축기(111)는, 내부에 수용공간을 형성하는 케이싱(112)과, 케이싱(112)의 내부에 수용 설치되어 냉매를 압축하는 압축부(115)와, 케이싱(112)의 내부에 압축부(115)의 일측에 설치되어 압축부(115)에 구동력을 제공하는 전동모터부(117)를 구비하고 있다. 케이싱(112)의 내부 하부영역에는 구동부품의 윤활 및 냉각기능을 수행하는 오일(120)이 수용 저장될 수 있도록 오일수용부(119)가 형성되어 있다.The compressor 111 includes a casing 112 for forming an accommodating space therein, a compression unit 115 accommodated in the casing 112 to compress a refrigerant, and a compression unit (in the casing 112). It is provided on one side of the 115 is provided with an electric motor unit 117 for providing a driving force to the compression unit 115. The oil receiving part 119 is formed in the lower inner region of the casing 112 so that the oil 120 for lubricating and cooling the driving parts can be accommodated and stored.

한편, 난방운전 시 외기 온도가 저하되면 냉매의 증발 온도가 저하되고, 이에 기인하여 오일(120)의 온도도 저하된다. 오일(120)의 온도가 과도하게 저하되면, 오일(120)의 점도가 높아지고 냉매와 오일(120)이 서로 분리되는 소위 층분리 현상이 발생되어 압축기(111)의 펌핑불량 등에 의한 윤활불량이 발생된다. On the other hand, when the outside air temperature is lowered during the heating operation, the evaporation temperature of the refrigerant is lowered, and thus the temperature of the oil 120 is also lowered. When the temperature of the oil 120 is excessively lowered, the viscosity of the oil 120 is increased and a so-called layer separation phenomenon occurs in which the refrigerant and the oil 120 are separated from each other, resulting in poor lubrication due to poor pumping of the compressor 111. do.

그런데, 이러한 종래의 압축기에 있어서는, 압축기(111)의 내부에 수용된 오일(120)의 온도를 높일 수 있는 수단이 구비되어 있지 아니하여 외기의 온도가 낮아지게 되어 오일(120)의 온도가 과도하게 저하될 경우, 오일(120) 온도 저하에 기인한 압축기(111)의 윤활불량 등 압축기(111)의 오일부족현상을 초래하게 된다고 하는 문제점이 있다. By the way, in such a conventional compressor, there is no means for increasing the temperature of the oil 120 accommodated in the compressor 111, so that the temperature of the outside air is lowered, so that the temperature of the oil 120 is excessively When lowered, there is a problem that oil shortage of the compressor 111 is caused, such as poor lubrication of the compressor 111 due to the oil 120 temperature decrease.

따라서, 본 발명의 목적은, 외기 온도 저하에 기인한 압축기의 오일부족현상을 방지할 수 있는 오일가열기능을 구비한 압축기를 제공하는 것이다. It is therefore an object of the present invention to provide a compressor having an oil heating function that can prevent oil shortage of the compressor due to a decrease in the outside air temperature.

상기 목적은, 본 발명에 따라, 내부에 수용공간을 형성하며 저부에 오일을 수용할 수 있도록 오일수용부가 형성되는 케이싱과; 상기 케이싱의 내부에 수용되어 냉매를 압축하는 압축부와; 상기 케이싱의 내부에 수용되어 상기 압축부에 구동력을 제공하는 전동모터부와; 상기 오일수용부에 수용된 오일과 접촉되게 배치되는 열교환부와, 일 측은 상기 압축부의 토출측에 연결되고 타 측은 상기 열교환부를 경유하여 실외열교환기의 유출측과 상기 압축부의 흡입측 사이에 연결되는 냉매공급유로를 구비하여 상기 오일을 가열하는 오일가열부를 포함하는 오일가열기능을 구비한 압축기에 의해 달성된다. The object is, according to the present invention, and the housing is formed in the casing and the oil receiving portion is formed to accommodate the oil in the bottom; A compression unit accommodated in the casing to compress the refrigerant; An electric motor unit accommodated in the casing and providing a driving force to the compression unit; A heat exchange part disposed to be in contact with the oil contained in the oil receiving part, and one side is connected to the discharge side of the compression part, and the other side is connected to the outlet side of the outdoor heat exchanger and the suction side of the compression part via the heat exchange part It is achieved by a compressor having an oil heating function including an oil heating unit for heating the oil having a flow path.

여기서, 상기 냉매공급유로를 개폐하도록 설치되는 유로개폐밸브를 더 포함하도록 구성하는 것이 효과적이다.Here, it is effective to further comprise a flow path opening and closing valve that is installed to open and close the refrigerant supply passage.

삭제delete

상기 케이싱의 내부에 수용된 오일의 온도를 검출하는 온도검출부를 더 포함하도록 구성하는 것이 바람직하다.It is preferable to further include a temperature detection unit for detecting the temperature of the oil contained in the casing.

상기 온도검출부의 검출결과에 기초하여 상기 유로개폐밸브를 제어하는 제어부를 더 포함하여 구성하는 것이 효과적이다.It is effective to further include a control unit for controlling the flow path opening and closing valve based on the detection result of the temperature detector.

상기 열교환부는 내부에 냉매가 유동할 수 있도록 냉매유로를 구비하여 코일형상으로 형성되는 코일유니트를 포함하도록 구성하는 것이 바람직하다.The heat exchange unit is preferably configured to include a coil unit formed in a coil shape with a refrigerant passage so that the refrigerant flows therein.

상기 열교환부는 내부에 냉매가 유동할 수 있게 냉매유로를 구비한 판형으로 형성되는 판형유니트를 포함하도록 구성하는 것이 효과적이다.The heat exchange part may be configured to include a plate-shaped unit formed in a plate shape having a refrigerant passage to allow the refrigerant to flow therein.

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

도 3은 본 발명의 일 실시예에 따른 오일가열기능을 구비한 압축기가 적용된 냉동사이클 구성도이고, 도 4는 도 3의 제어블록도이며, 도 5는 본 발명의 다른 실시예에 따른 오일가열기능을 구비한 압축기가 적용된 냉동사이클 구성도이고, 도 6은 도 5의 판형유니트의 단면도이다. 전술 및 도시한 구성과 동일 및 동일 상당부분에 대해서는 도면 설명의 편의상 동일한 참조부호를 부여하고, 그에 대한 상세한 설명은 생략하기로 한다. 이들 도면에 도시된 바와 같이, 본 오일가열기능을 구비한 압축기(151)는, 내부에 수용공간을 형성하며 저부에 오일(160)이 수용될 수 있도록 오일수용부(159)가 형성되어 있는 케이싱(152)과, 케이싱(152)의 내부에 수용되어 냉매를 압축하는 압축부(155)와, 케이싱(152)의 내부에 수용되어 압축부(155)에 구동력을 제공하는 전동모터부(157)와, 케이싱(152)의 내부에 수용되어 오일(160)을 가열하는 오일가열부(171)를 포함하여 구성되어 있다. 3 is a configuration diagram of a refrigeration cycle to which a compressor having an oil heating function according to an embodiment of the present invention is applied, FIG. 4 is a control block diagram of FIG. 3, and FIG. 5 is an oil heating according to another embodiment of the present invention. A refrigeration cycle configuration diagram in which a compressor having a function is applied, and FIG. 6 is a cross-sectional view of the plate-shaped unit of FIG. The same reference numerals and the same components as the above-described and illustrated configurations are denoted by the same reference numerals for convenience of description, and detailed description thereof will be omitted. As shown in these drawings, the compressor 151 having the oil heating function has a casing in which an oil receiving portion 159 is formed to form an accommodation space therein and to accommodate the oil 160 at the bottom thereof. 152, a compression unit 155 accommodated in the casing 152 to compress the refrigerant, and an electric motor unit 157 accommodated in the casing 152 to provide driving force to the compression unit 155. And an oil heater 171 accommodated in the casing 152 to heat the oil 160.

압축기(151)의 토출측에는 냉방 또는 난방 운전 시 냉매의 유로를 절환할 수 있도록 유로절환밸브(121)가 설치되어 있으며, 유로절환밸브(121)에는 실외열교환기(131)와, 어큐뮬레이터(125) 및 실내열교환기(141)가 각각 연결되어 있다.The discharge side of the compressor 151 is provided with a flow path switching valve 121 to switch the flow path of the refrigerant during cooling or heating operation, the flow path switching valve 121 is an outdoor heat exchanger 131 and the accumulator 125 And an indoor heat exchanger 141 are respectively connected.

실외열교환기(131)의 일측에는 냉각팬(132)이 설치되어 있으며, 냉매의 유동방향을 따라 실외열교환기(131)의 일측에는 체크밸브(135) 및 실외팽창장치(136)가 각각 구비되어 있다.A cooling fan 132 is installed at one side of the outdoor heat exchanger 131, and a check valve 135 and an outdoor expansion device 136 are provided at one side of the outdoor heat exchanger 131 along the refrigerant flow direction. have.

냉매의 유동방향을 따라 실내열교환기(141)의 일측에는 실내팽창장치(143)가 설치되어 있으며, 실내열교환기(141)의 일측에는 실내공기를 송풍할 수 있도록 송풍팬(145)이 구비되어 있다.An indoor expansion device 143 is installed at one side of the indoor heat exchanger 141 along the flow direction of the refrigerant, and a blower fan 145 is provided at one side of the indoor heat exchanger 141 to blow indoor air. have.

한편, 오일가열부(171)는, 내부에 냉매가 유동될 수 있도록 냉매유로를 구비하여 코일형상으로 형성되어 케이싱(152)의 내부에 오일(160)과 열교환가능하게 배치되는 코일유니트(176)의 형태로 구현된 열교환부와, 열교환부에 냉매를 공급하는 냉매공급유로(181)를 구비하고 있다. On the other hand, the oil heating unit 171, the coil unit 176 is formed in a coil shape with a refrigerant flow path so that the refrigerant flows therein and is arranged to be heat-exchangeable with the oil 160 inside the casing 152. And a refrigerant supply passage 181 for supplying a refrigerant to the heat exchange unit.

냉매공급유로(181)는 압축부(155)에서 압축되어 토출된 고온 고압 상태의 냉매가 코일유니트(176)를 경유하여 실외열교환기(131)의 일 측에 상호 연통되게 연결되도록 형성되어 있다. 여기서, 냉매공급유로(181)는, 도 5에 도시된 바와 같이, 난방 시 냉매의 유동방향을 따라 실내열교환기(141)의 상류측에 상호 연통되게 연결되도록 구성할 수도 있으며, 열교환부는 도 5 및 도 6에 도시된 바와 같이, 내부에 냉매가 유동될 수 있도록 냉매유로(178)가 형성된 판형상을 가지는 판형유니트(177)로 구성할 수도 있다. 냉매의 유동방향을 따라 냉매공급유로(181)의 코일유니트(176)의 상류측 구간에는 냉매 유로를 개폐할 수 있도록 유로개폐밸브(185)가 구비되어 있으며, 케이싱(152)의 내부 저부영역에는 오일(160)의 온도를 검출하는 온도검출부로서 온도검출센서(187)가 마련되어 있다. The refrigerant supply passage 181 is formed such that the refrigerant in the high temperature and high pressure state compressed and discharged by the compression unit 155 is connected to one side of the outdoor heat exchanger 131 via the coil unit 176. Here, the coolant supply passage 181 may be configured to be connected to the upstream side of the indoor heat exchanger 141 along the flow direction of the refrigerant during heating, as shown in FIG. 6, a plate-shaped unit 177 having a plate shape having a refrigerant passage 178 formed therein may be configured to allow a refrigerant to flow therein. A flow path opening / closing valve 185 is provided in the upstream section of the coil unit 176 of the coolant supply passage 181 along the flow direction of the coolant so as to open and close the coolant flow path, and in the inner bottom region of the casing 152. The temperature detection sensor 187 is provided as a temperature detection unit for detecting the temperature of the oil 160.

온도검출센서(187) 및 유로개폐밸브(185)는, 도 4에 도시된 바와 같이, 온도검출센서(187)의 검출 결과에 기초하여 코일유니트(176) 또는 판형유니트(177)에 냉매가 공급 및 차단될 수 있게 유로개폐밸브(185)를 제어할 수 있도록 제어부(191)와 상호 전기적으로 연결되어 있다. 4, the refrigerant is supplied to the coil unit 176 or the plate-shaped unit 177 based on the detection result of the temperature detection sensor 187, as shown in FIG. 4. And it is electrically connected to the control unit 191 to control the flow path opening and closing valve 185 to be blocked.

이러한 구성에 의하여, 난방 시 유로절환밸브(121)는 압축부(155)에서 압축된 냉매가 실내열교환기(141)측으로 유동될 수 있도록 유로를 절환하고, 실내열교 환기(141)로 유입된 냉매는 실내공기와 열교환되면서 난방기능을 수행하게 된다. By this configuration, the flow path switching valve 121 at the time of heating switches the flow path so that the refrigerant compressed in the compression unit 155 flows to the indoor heat exchanger 141 side, the refrigerant introduced into the indoor heat exchanger 141. Heat exchange with the room air to perform the heating function.

한편, 제어부(191)는 온도검출센서(187)에 의해 검출된 오일(160)의 온도가 설정치 이하로 되는 경우, 유로개폐밸브(185)를 제어하여 압축부(155)에서 압축되어 토출되는 고온 고압 상태의 냉매가 코일유니트(176) 또는 판형유니트(177)의 형태로 구현되는 열교환부로 유동되도록 한다. 열교환부로 유입된 냉매는 오일(160)과 열교환되어 오일(160)을 가열하고 냉매공급유로(181)를 따라 유동되어 실내열교환기(141)에서 난방기능을 수행한 냉매와 합류하여 실외열교환기(131)로 유동된다.On the other hand, when the temperature of the oil 160 detected by the temperature detection sensor 187 is below the set value, the control unit 191 controls the flow path opening and closing valve 185 to be compressed and discharged from the compression unit 155 The refrigerant in the high pressure state is allowed to flow to the heat exchange unit implemented in the form of the coil unit 176 or the plate-shaped unit 177. The refrigerant introduced into the heat exchanger is heat-exchanged with the oil 160 to heat the oil 160 and flow along the refrigerant supply passage 181 to join the refrigerant that has performed the heating function in the indoor heat exchanger 141. 131).

이상 설명한 바와 같이, 본 발명에 따르면, 내부에 수용공간을 형성하며 저부에 오일을 수용할 수 있도록 오일수용부가 형성되는 케이싱과; 상기 케이싱의 내부에 수용되어 냉매를 압축하는 압축부와; 상기 케이싱의 내부에 수용되어 상기 압축부에 구동력을 제공하는 전동모터부와; 상기 케이싱의 내부에 상기 오일을 가열할 수 있도록 수용되는 오일가열부를 포함하도록 함으로써, 외기 온도 저하에 기인한 압축기의 오일부족현상을 방지할 수 있는 오일가열기능을 구비한 압축기가 제공된다. As described above, according to the present invention, a casing in which an oil receiving portion is formed to form an accommodation space therein and receive oil in the bottom; A compression unit accommodated in the casing to compress the refrigerant; An electric motor unit accommodated in the casing and providing a driving force to the compression unit; By including an oil heating unit accommodated to heat the oil inside the casing, a compressor having an oil heating function capable of preventing oil shortage of the compressor due to a decrease in ambient temperature is provided.

Claims (7)

내부에 수용공간을 형성하며 저부에 오일이 수용되는 오일수용부가 형성되는 케이싱과; 상기 케이싱의 내부에 수용되어 냉매를 압축하는 압축부와; 상기 케이싱의 내부에 수용되어 상기 압축부에 구동력을 제공하는 전동모터부와; 상기 오일수용부에 수용된 오일과 접촉되게 배치되는 열교환부와, 일 측은 상기 압축부의 토출측에 연결되고 타 측은 상기 열교환부를 경유하여 실외열교환기의 유출측과 상기 압축부의 흡입측 사이에 연결되는 냉매공급유로를 구비하여 상기 오일저장부에 수용된 오일을 가열하는 오일가열부를 포함하는 오일가열기능을 구비한 압축기. A casing in which an oil receiving part is formed to form an accommodating space therein and is accommodated in the bottom; A compression unit accommodated in the casing to compress the refrigerant; An electric motor unit accommodated in the casing and providing a driving force to the compression unit; A heat exchange part disposed to be in contact with the oil contained in the oil receiving part, and one side is connected to the discharge side of the compression part, and the other side is connected to the outlet side of the outdoor heat exchanger and the suction side of the compression part via the heat exchange part Compressor having an oil heating function comprising an oil heater for heating the oil contained in the oil storage unit having a flow path. 삭제delete 제1항에 있어서,The method of claim 1, 상기 냉매공급유로를 개폐하도록 설치되는 유로개폐밸브를 더 포함하는 것을 특징으로 하는 오일가열기능을 구비한 압축기. Compressor having an oil heating function characterized in that it further comprises a flow path opening and closing valve that is installed to open and close the refrigerant supply passage. 제3항에 있어서,The method of claim 3, 상기 케이싱의 내부에 수용된 오일의 온도를 검출하는 온도검출부를 더 포함하는 것을 특징으로 하는 오일가열기능을 구비한 압축기. And a temperature detecting unit detecting a temperature of the oil contained in the casing. 제4항에 있어서,The method of claim 4, wherein 상기 온도검출부의 검출결과에 기초하여 상기 유로개폐밸브를 제어하는 제어부를 더 포함하는 것을 특징으로 하는 오일가열기능을 구비한 압축기. And a control unit for controlling the flow path opening and closing valve based on the detection result of the temperature detecting unit. 제3항 내지 제5항 중 어느 한 항에 있어서,The method according to any one of claims 3 to 5, 상기 열교환부는 내부에 냉매가 유동할 수 있도록 냉매유로를 구비하여 코일형상으로 형성되는 코일유니트를 포함하는 것을 특징으로 하는 오일가열기능을 구비한 압축기. The heat exchanger is a compressor having an oil heating function, characterized in that it comprises a coil unit formed in a coil shape with a refrigerant passage so that the refrigerant flows therein. 제3항 내지 제5항 중 어느 한 항에 있어서,The method according to any one of claims 3 to 5, 상기 열교환부는 내부에 냉매가 유동할 수 있게 냉매유로를 구비한 판형으로 형성되는 판형유니트를 포함하는 것을 특징으로 하는 오일가열기능을 구비한 압축기. The heat exchanger is a compressor having an oil heating function, characterized in that it comprises a plate-shaped unit formed in a plate shape having a refrigerant flow path to allow the refrigerant to flow therein.
KR1020050042222A 2005-05-19 2005-05-19 Compressor with oil heating function KR100724384B1 (en)

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KR20210129950A (en) * 2020-04-21 2021-10-29 엘지전자 주식회사 A compressor
KR102464109B1 (en) * 2020-04-21 2022-11-07 엘지전자 주식회사 A compressor
WO2022260314A1 (en) * 2021-06-11 2022-12-15 Hanon Systems Etxv direct discharge injection compressor
US11885535B2 (en) 2021-06-11 2024-01-30 Hanon Systems ETXV direct discharge injection compressor

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