KR100263775B1 - Low presure type scroll compressor - Google Patents

Low presure type scroll compressor Download PDF

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KR100263775B1
KR100263775B1 KR1019970081047A KR19970081047A KR100263775B1 KR 100263775 B1 KR100263775 B1 KR 100263775B1 KR 1019970081047 A KR1019970081047 A KR 1019970081047A KR 19970081047 A KR19970081047 A KR 19970081047A KR 100263775 B1 KR100263775 B1 KR 100263775B1
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South Korea
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discharge
chamber
compressor
gas
heat transfer
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KR1019970081047A
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Korean (ko)
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KR19990060803A (en
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최세헌
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구자홍
엘지전자주식회사
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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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • 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

Abstract

PURPOSE: A low pressure scroll compressor is provided to doubly divide a high pressure divider and to decrease heat transfer between a high pressure discharge gas chamber and a low pressure suction gas chamber for increasing compressor efficiency. CONSTITUTION: Heat transfer from a discharge chamber is accomplished along a wall face of a discharge cover(13) and a dividing space(21) is placed between the wall faces to compose an insulating space or a cooling space. The dividing space(21) maximizes a radiating area of the discharge chamber to drop a temperature of discharged gas and stopping a direct heat transfer from the discharge chamber to the suction chamber for preventing heating event of suction gas. A common compressor is fixed in an outdoor unit of air conditioner and a cooling fan is installed in the outdoor unit for cooling a condenser of air conditioner. Therefore, since the compressor is cooled by the cooling fan, heating prevention of suction gas by the dividing space becomes more efficient.

Description

저압식 스크롤압축기Low Pressure Scroll Compressor

본 발명은 스크롤압축기에 관한 것으로서, 특히 고저압 분리장치를 이중으로 분리하여 고온의 토출가스실과 저온의 흡입가스실 사이에 공간을 구성하여 토출가스실과 흡입가스실 사이의 열전달을 감소시켜 압축기의 효율을 향상시키기 위한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scroll compressor, and in particular, a high and low pressure separator is doubled to form a space between a high temperature discharge gas chamber and a low temperature suction gas chamber to reduce heat transfer between the discharge gas chamber and the suction gas chamber to improve the efficiency of the compressor. It is to let.

스크롤압축기는 공조기 및 냉동기 등에 사용되는 압축기의 한 형태로 도 1 을 참조하여 그 구성을 살펴보면 냉매가스가 유입되는 흡입파이프(11)와, 고정자(4)와의 전자기적 작용에 의해 회전하는 회전자(5)와, 상기 회전자(5)와 일체로 결합된 샤프트(6)와, 상기 샤프트(6)의 상하단을 지지하는 상부프레임(2) 및 하부프레임(3)과, 압축기 상단에서 압축실을 형성하도록 선회스크롤(7)과 맞물려서 구성된 고정스크롤(8)과, 상기 압축실에서 압축된 가스를 토출포트(12) 및 토출실(17)을 거쳐 외부로 배출하는 토출파이프(15)와, 상기 토출실(17)을 형성하는 상부셸(1)로 구성된다.The scroll compressor is a type of compressor used in an air conditioner and a refrigerator. Referring to FIG. 1, the scroll compressor is a rotor that rotates by an electromagnetic action between a suction pipe 11 into which refrigerant gas is introduced and a stator 4. 5), the shaft 6 integrally coupled with the rotor 5, the upper frame 2 and the lower frame 3 for supporting the upper and lower ends of the shaft 6, and the compression chamber at the top of the compressor A fixed scroll (8) configured to be engaged with the swing scroll (7) to be formed, a discharge pipe (15) for discharging the gas compressed in the compression chamber to the outside through the discharge port (12) and the discharge chamber (17), and It consists of an upper shell 1 which forms the discharge chamber 17.

도면중 미설명 부호 16은 오일펌프, O는 오일을 나타낸다.In the figure, reference numeral 16 denotes an oil pump, and O denotes an oil.

이와같이 구성되는 스크롤 압축기의 작동원리를 설명하면 다음과 같다.The operation principle of the scroll compressor configured as described above is as follows.

흡입파이프(11)를 통해 유입된 냉매는 고정스크롤(8)과 선회스크롤(7)의 랩으로 형성된 압축챔버내로 흡입되어지고, 모터부의 회전자(5)가 회전하여 샤프트(6)를 회전시키면, 상부프레임(2)과 구동부시(10)위에 있는 올담링(9)이 선회스크롤(7)과 한방향 키이홈으로 연결되어 샤프트(6)의 회전운동을 선회스크롤(7)의 선회운동으로 바꾼다.The refrigerant introduced through the suction pipe 11 is sucked into the compression chamber formed by the wrap of the fixed scroll 8 and the turning scroll 7, and when the rotor 5 of the motor unit rotates to rotate the shaft 6. The upper wall (2) and the old dam ring (9) on the drive bushing (10) are connected to the turning scroll (7) with one-way keyway to change the rotational movement of the shaft (6) to the turning movement of the turning scroll (7). .

이와같은 선회스크롤(7)의 선회운동에 의해 그 선회스크롤(7)과 고정스크롤(8)의 각 랩(7a,8a) 사이에는 압축실이 형성되고, 그 압축실은 지속적인 선회운동에 의해 중심으로 이동하면서 체적이 감소되고 압력이 상승하여 토출포트(12)를 통과하여 토출되고 토출된 가스는 토출실(17)을 지나서 토출파이프(15)를 통과한 후 에어컨 시스템에 보내지게 된다.By this turning movement of the turning scroll 7, a compression chamber is formed between the turning scroll 7 and each wrap 7a, 8a of the fixed scroll 8, and the compression chamber is centered by the continuous turning movement. As the volume moves, the volume decreases and the pressure rises, the gas is discharged through the discharge port 12, and the discharged gas passes through the discharge chamber 17, passes through the discharge pipe 15, and is then sent to the air conditioning system.

한편, 오일펌프(16)에 의해 흡입된 오일(O)은 급유로(6b)를 따라 압축기구부로 흡상되는데, 그 흡상되는 오일(O)의 일부는 저널베어링 오일 그루브(미도시)로 유입되어 상부 프레임(2)의 직각형 오일급유구(미도시)를 통해 오일 그루브(2a)로 유입되고, 그 오일은 상부프레임(2)과 선회스크롤(7)의 습동부로 스며들어 윤활작용을 하게되며, 나머지는 구동핀(6a) 상단에서 비산되어 선회운동을 하는 보스(7b)의 내외측 습동부에 스며들어 윤활역활을 하게된다.On the other hand, the oil (O) sucked by the oil pump 16 is sucked into the compression mechanism section along the oil supply path (6b), a portion of the oil (O) is sucked into the journal bearing oil groove (not shown) The oil is introduced into the oil groove 2a through a rectangular oil filling hole (not shown) of the upper frame 2, and the oil penetrates into the sliding parts of the upper frame 2 and the turning scroll 7 to lubricate. And, the rest is scattered from the upper end of the driving pin (6a) is infiltrated into the inner and outer sliding portion of the boss (7b) to make a pivoting role to play a lubrication role.

이와같이 각 습동부에서 윤활작용을 마친 오일의 일부는 압축기의 하측으로 흘러내리고, 일부는 원심력에 의해 고정스크롤(8)의 흡입구(미도시)로 냉매가스와 함께 혼입되게 된다.In this way, a part of the oil lubricated in each of the sliding portion flows down to the lower side of the compressor, and part of the oil is mixed with the refrigerant gas to the suction port (not shown) of the fixed scroll 8 by centrifugal force.

종래 압축기 구조에서 토출포트(12)로 토출된 고온오압의 토출가스는 토출실(17)을 채운후, 토출파이프(15)를 통하여 에어컨 시스템으로 보내지게 되는데, 고온고압의 토출가스로 채워진 토출실(17)과 저온저압의 흡입가스로 채워진 흡입실(18) 사이의 밀봉을 위하여 고저압 분리 장치인 토출커버(13)를 설치하게 된다. 이 토출커버는 고정스크롤(8)의 상면과 볼트체결되며, 밀폐용기(1)와 용접하게 된다. 이러한 토출커버(13)는 설치가 간단한 장점으로 인하여 대부분의 저압식 스코롤 압축기에서 채용되고 있다.In the conventional compressor structure, the hot gas discharge gas discharged to the discharge port 12 is filled into the discharge chamber 17 and then sent to the air conditioner system through the discharge pipe 15, which is filled with the discharge gas of the high temperature and high pressure discharge chamber. A discharge cover 13, which is a high and low pressure separating device, is provided for sealing between the 17 and the suction chamber 18 filled with the low temperature low pressure suction gas. The discharge cover is bolted to the upper surface of the fixed scroll (8), and welded to the sealed container (1). Such a discharge cover 13 is adopted in most low pressure scororoll compressors because of its simple installation.

토출실(17)에 채워진 토출가스는 고온이므로, 저온의 흡입실(18)로의 열전달에 의해, 흡입가스를 가열하게 된다. 흡입가스의 가열은 압축기의 체적 효율을 저하시켜, 압축기 전체의 효율을 떨어뜨리게 된다. 이를 방지하기 위한 방법으로 토출커버(13)에 단열재를 부착하는 방법이 있는데, 단열재 재료가 고가일뿐 아니라, 가공을 해야함으로 가격이 크게 상승하는 문제점이 있었다.Since the discharge gas filled in the discharge chamber 17 is high temperature, the suction gas is heated by heat transfer to the low temperature suction chamber 18. Heating of the suction gas lowers the volumetric efficiency of the compressor, thereby lowering the efficiency of the entire compressor. There is a method for attaching the heat insulating material to the discharge cover 13 as a method for preventing this, there is a problem that the price of the heat insulating material is not only expensive, but because the processing must be greatly increased.

본 발명은 상기한 바와같은 종래 기술의 문제점을 해결하기 위하여 발명된 것으로 저압식 스크롤압축기의 고저압 분리장치인 토출커버에 일체로 이루어지고, 단열층 역할을 하는 분리공간을 형성함으로서, 동일한 가격으로 체적효율 저하를 방지하여 압축기의 효율을 높이는데 목적이 있다.The present invention is invented to solve the problems of the prior art as described above is made integrally with the discharge cover which is a high and low pressure separation device of the low-pressure scroll compressor, by forming a separation space that serves as a heat insulating layer, the volume at the same price The purpose is to increase the efficiency of the compressor by preventing a decrease in efficiency.

도 1 은 종래 스크롤압축기의 종단면도.1 is a longitudinal sectional view of a conventional scroll compressor.

도 2 는 본 발명의 고저압 분리장치 구조도.Figure 2 is a structure diagram of a high low pressure separator of the present invention.

도 3 은 본 발명의 다른실시예도.Figure 3 is another embodiment of the present invention.

*** 도면의 주요 부분에 대한 부호의 설명 ****** Explanation of symbols for the main parts of the drawing ***

1 : 밀폐용기 2,3 : 상,하 프레임1: Hermetic container 2,3: Upper and lower frame

4 : 고정자 5 : 회전자4: stator 5: rotor

6 : 구동축 7 : 선회스크롤6: driving shaft 7: turning scroll

8 : 고정스크롤 9 : 올담링8: fixed scroll 9: Olddamling

10 : 구동부시 11 : 흡입파이프10: drive bush 11: suction pipe

12 : 토출포트 13 : 토출커버12: discharge port 13: discharge cover

15 : 토출파이프 16 : 오일펌프15: discharge pipe 16: oil pump

17 : 토출실 18 : 흡입실17: discharge chamber 18: suction chamber

21,22 : 분리공간21,22: Separation space

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

압축기의 체적효율은 주로 흡입가스의 가열현상에 의해 좌우된다. 흡입가스의 가열은 압축기의 모터 발열, 토출실의 토출가스, 마찰부위의 발열, 누설 등에 의한 열전달에 의해 이루어진다.The volumetric efficiency of the compressor depends mainly on the heating phenomenon of the suction gas. Heating of the suction gas is performed by heat transfer due to motor heat generation of the compressor, discharge gas of the discharge chamber, heat generation of the friction part, leakage, and the like.

이중 가장 영향이 큰 부분은 모터 발열에 의한 열전달이다. 그러나 흡입가스에 의한 모터 냉각은 반드시 필요한 부분이므로 이 부분의 열전달은 불가피하다. 두 번째로 영향이 큰 부분은 토출실로 부터의 열전달 현상에 의한 것이다. 나머지는 이 두가지에 비하면 미미한 양이다.The most influential part is heat transfer by motor heating. However, since the cooling of the motor by the suction gas is a necessary part, heat transfer of this part is inevitable. The second most influential part is due to heat transfer from the discharge chamber. The rest is insignificant compared to the two.

토출실로 부터의 열전달은 전체 흡입가스 가열에서 약 25%를 차지한다. 이 부분을 단열재로 차단할 경우, 압축기의 체적효율은 약 2% 상승한다. 체적효율은 압축기 전체 효율과 직접적인 영향관계가 있으므로 압축기의 효율을 상당히 높일수가 있다.Heat transfer from the discharge chamber accounts for about 25% of the total suction gas heating. If this part is insulated, the volumetric efficiency of the compressor is increased by about 2%. Volumetric efficiency is directly related to the overall efficiency of the compressor, which can significantly increase the efficiency of the compressor.

본 발명에서는 토출실(17)로 부터의 열전달은 토출커버(13) 벽면을 따라 이루어지므로, 이 벽면 사이에 도 2 에 도시된 바와같이 분리공간(21)을 두어 이를 단열공간 혹은 냉각공간으로 구성한다.In the present invention, since the heat transfer from the discharge chamber 17 is made along the discharge cover 13 wall, a separation space 21 is provided between the walls as shown in FIG. do.

도 2 에서 분리공간(21)은 토출실의 방열면적을 극대화 하여, 토출가스를 온도를 떨어뜨리는 역할을 할 뿐 아니라, 토출실(17)로 부터 흡입실(18)로의 직접적인 열전달을 막아주어 흡입가스의 가열현상을 방지할 수 있다. 통상 압축기는 에어컨의 실외기에 장착하게 되며, 이 실외기에는 냉각용팬이 있어 에어컨의 응축기를 냉각하게 된다. 따라서, 압축기도 이 냉각용 팬에 의해 냉각될 수 있으므로, 분리공간(21)에 의한 흡입가스 가열 방지는 효과적이다.In FIG. 2, the separation space 21 maximizes the heat dissipation area of the discharge chamber, serves to lower the temperature of the discharge gas, and prevents direct heat transfer from the discharge chamber 17 to the suction chamber 18. The heating phenomenon of the gas can be prevented. In general, a compressor is installed in an outdoor unit of an air conditioner, and the outdoor unit has a cooling fan to cool the condenser of the air conditioner. Therefore, the compressor can also be cooled by this cooling fan, so that the suction gas heating prevention by the separation space 21 is effective.

도 3 은 본 발명의 다른 실시예로서, 분리공간(22)은 밀폐형 공간으로 형성되고 이 밀폐형 공간을 진공으로 하여 공간(22)의 진공 단열효과를 이용하여 토출실로부터의 열전달을 억제하게 되는 것이다.3 is another embodiment of the present invention, in which the separation space 22 is formed as a closed space, and the sealed space is made into a vacuum to suppress heat transfer from the discharge chamber by using the vacuum insulation effect of the space 22. .

이상 설명한 바와같이 본 발명의 저압식 스크롤압축기는 토출실로부터의 열전달에 의한 흡입가스 가열현상을 방지하여 압축기의 체적효율을 높이는 효과가 있다.As described above, the low-pressure scroll compressor of the present invention has the effect of preventing the suction gas heating caused by the heat transfer from the discharge chamber to increase the volumetric efficiency of the compressor.

Claims (3)

고압의 토출실(17)과 저압의 흡입실(18)의 분리장치인 토출커버(13)에 분리공간을 구비함을 특징으로 하는 저압식 스크롤압축기.A low pressure scroll compressor, characterized in that a discharge space is provided in the discharge cover (13), which is a separation device of the high pressure discharge chamber (17) and the low pressure suction chamber (18). 제 1 항에 있어서,The method of claim 1, 상기 분리공간은 밀폐형구조로 형성함을 특징으로 하는 저압식 스크롤압축기.The separation space is a low pressure scroll compressor, characterized in that formed in a closed structure. 제 2 항에 있어서,The method of claim 2, 상기 분리공간은 진공상태를 이룸을 특징으로 하는 저압식 스크롤압축기.The separation space is a low pressure scroll compressor, characterized in that the vacuum state.
KR1019970081047A 1997-12-31 1997-12-31 Low presure type scroll compressor KR100263775B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019970081047A KR100263775B1 (en) 1997-12-31 1997-12-31 Low presure type scroll compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019970081047A KR100263775B1 (en) 1997-12-31 1997-12-31 Low presure type scroll compressor

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KR19990060803A KR19990060803A (en) 1999-07-26
KR100263775B1 true KR100263775B1 (en) 2000-08-16

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KR1019970081047A KR100263775B1 (en) 1997-12-31 1997-12-31 Low presure type scroll compressor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8033803B2 (en) 2007-09-11 2011-10-11 Emerson Climate Technologies, Inc. Compressor having improved sealing assembly
US8356987B2 (en) 2007-09-11 2013-01-22 Emerson Climate Technologies, Inc. Compressor with retaining mechanism
US8043078B2 (en) 2007-09-11 2011-10-25 Emerson Climate Technologies, Inc. Compressor sealing arrangement
US10337514B2 (en) * 2015-04-17 2019-07-02 Emerson Climate Technologies, Inc. Scroll compressor having an insulated high-strength partition assembly

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