KR0162469B1 - Anti-reverse flow device of scroll compressor - Google Patents

Anti-reverse flow device of scroll compressor Download PDF

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Publication number
KR0162469B1
KR0162469B1 KR1019960005352A KR19960005352A KR0162469B1 KR 0162469 B1 KR0162469 B1 KR 0162469B1 KR 1019960005352 A KR1019960005352 A KR 1019960005352A KR 19960005352 A KR19960005352 A KR 19960005352A KR 0162469 B1 KR0162469 B1 KR 0162469B1
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South Korea
Prior art keywords
reverse
valve housing
valve
scroll compressor
contact
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KR1019960005352A
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Korean (ko)
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KR970062349A (en
Inventor
조경래
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구자홍
엘지전자주식회사
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Priority to KR1019960005352A priority Critical patent/KR0162469B1/en
Publication of KR970062349A publication Critical patent/KR970062349A/en
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Publication of KR0162469B1 publication Critical patent/KR0162469B1/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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
    • 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
    • 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
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/13—Noise
    • F04C2270/135—Controlled or regulated
    • 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
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/70—Safety, emergency conditions or requirements
    • F04C2270/72—Safety, emergency conditions or requirements preventing reverse rotation

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

본 발명에 의한 스크롤 압축기의 역류방지장치는 토출포트를 통한 냉매가 역지변을 지나 밸브하우징을 통과하도록 한 스크롤 압축기에 있어서, 상기 역지변과 접하는 밸브하우징이나, 혹은 밸브하우징에 접하는 역지변에 점착방지돌기를 형성함으로써, 역지변 구조에서의 역지변과 밸브하우징의 스토퍼부 사이의 면접촉부에 오일이 작용하여 그 점도의 영향으로 압축기 운전정지시 고,저압 분리판 토출공을 폐쇄하는 시간이 지연이 되어 압축실내에 토출된 가스가 유입되게 되어 선회스크롤의 역회전에 의한 소음발생과 고정,선회스크롤 랩 접촉에 의한 파손을 미연에 방지하도록 하였다.The reverse flow prevention device of the scroll compressor according to the present invention is a scroll compressor in which a refrigerant through a discharge port passes through a reverse valve and passes through a valve housing, wherein the scroll compressor adheres to a valve housing in contact with the reverse valve or a reverse valve in contact with the valve housing. By forming the prevention projections, the oil acts on the surface contact portion between the reverse displacement in the reverse displacement structure and the stopper portion of the valve housing, and the compressor operation is stopped due to the viscosity, and the time for closing the low pressure separator discharge hole is delayed. As a result, the gas discharged into the compression chamber is introduced to prevent the occurrence of noise caused by the reverse rotation of the turning scroll and the damage caused by the fixed and turning scroll wrap contact.

Description

스크롤 압축기의 역류방지장치Backflow prevention device of scroll compressor

제1도는 종래의 기술에 의한 스크롤 압축기의 압축부를 나타내는 단면도.1 is a cross-sectional view showing a compression part of a scroll compressor according to the prior art.

제2도는 종래의 기술에 의한 압축기의 역지변을 구비한 밸브하우징을 나타내는 평면도.2 is a plan view showing a valve housing provided with a reverse displacement of a compressor according to the prior art.

제3도는 종래의 기술에 의한 압축기의 역지변을 구비한 밸브하우징을 나타내는 단면도.3 is a cross-sectional view showing a valve housing with reverse displacement of a conventional compressor.

제4도는 종래의 기술에 의한 압축기의 역지변을 나타내는 평면도.4 is a plan view showing the reverse displacement of the conventional compressor.

제5도는 종래의 기술에 의한 압축기의 밸브하우징을 나타내는 평면도.5 is a plan view showing the valve housing of the conventional compressor.

제6도는 본 발명에 의한 압축기의 밸브하우징을 나타내는 단면도.6 is a cross-sectional view showing a valve housing of the compressor according to the present invention.

제7도는 본 발명에 의한 압축기의 역지변을 구비한 밸브하우징을 나타내는 단면도.7 is a cross-sectional view showing a valve housing with reverse displacement of the compressor according to the present invention.

제8도 및 제9도는 본 발명에 의한 압축기의 역류방지장치의 다른 실시예를 나타내는 단면도 및 평면도.8 and 9 are cross-sectional views and plan views showing another embodiment of the backflow prevention device of the compressor according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

31,31' : 밸브하우징 21,21' : 역지변31,31 ': Valve housing 21,21': Reverse valve

22,32 : 점착방지돌기22,32: adhesion preventing protrusion

본 발명은 스크롤 압축기의 역류방지장치에 관한 것으로, 특히 운전정지시 역지변이 토출통로를 폐쇄하는 시간을 최소로 되게 구성하여 압축실내에서 역류하는 토출가스량이 최소가 되도록 한 스크롤 압축기의 역류방지장치에 관한 것이다.The present invention relates to a non-return device of a scroll compressor, and in particular, a non-return device of a scroll compressor configured to minimize the time for closing the discharge passage during stop operation to minimize the amount of discharge gas flowing back in the compression chamber. It is about.

종래의 기술에 의한 스크롤 압축기의 역지변 구조는 제1도에 도시한 바와 같이, 압축기 운전시는 압축실내의 압축된 가스를 토출포트(2)를 경유하여 밸브하우징 토출통로(5-1)의 역지변 날개(4-1)들 사이의 통로를 통해서 제2토출실(8)로 토출하고 압축기 운전정지시는 제2토출실(8)의 토출압이 밸브하우징 토출통로(5-1), 밸브하우징 포트(5-2)를 통해 역지변(4)에 작용하여 상기 역지변을 하부로 밀어 붙여 고,저압 분리판 토출공(6)을 폐쇄하게 구성하여 상기 제2토출실(8)의 토출가스가 제1토출실(7) 안으로 역류하는 것을 방지하게 구성되어 있다.As shown in FIG. 1, the reverse displacement structure of the scroll compressor according to the related art is characterized in that the compressed gas in the compression chamber is discharged from the valve housing discharge passage 5-1 via the discharge port 2 during operation of the compressor. The discharge pressure of the second discharge chamber 8 is discharged to the second discharge chamber 8 through the passage between the check valve blades 4-1, and the compressor discharge stops at the valve housing discharge passage 5-1; It acts on the reverse valve 4 through the valve housing port 5-2, pushes the reverse valve downward, and closes the low pressure separation plate discharge hole 6 to close the second discharge chamber 8. The discharge gas is prevented from flowing back into the first discharge chamber 7.

도면중 미설명 부호 1은 고정스크롤을 나타내고, 5는 밸브하우징을 나타낸다.In the figure, reference numeral 1 denotes a fixed scroll, and 5 denotes a valve housing.

그러나, 이러한 종래의 기술에서는 압축기 운전정지시 토출가스중에 함유된 오일이 역지변의 상면(4-2)과 밸브하우징의 역지변 스토퍼부(5-3) 사이의 접촉면에 작용하여 그 점성으로 인해 상기 역지변(4)이 고,저압 분리판 토출공(6)을 폐쇄하는 시간이 지연되어 제2토출실(8)의 토출가스가 밸브하우징 토출통로(5-1)를 통해 압축실 안으로 역류하여 역회전을 일으키게 된다. 역회전이 일어나면 심한 소음이 발생하게 되고, 고정,선회스크롤 랩 접촉이 생겨 랩 파손의 위험성이 대두되는 문제점이 있다.However, in this conventional technique, the oil contained in the discharge gas at the time of stopping the compressor acts on the contact surface between the upper surface 4-2 of the reverse displacement valve and the reverse displacement stopper portion 5-3 of the valve housing due to its viscosity. When the reverse side 4 is high and the time for closing the low pressure separator discharge hole 6 is delayed, the discharge gas of the second discharge chamber 8 flows back into the compression chamber through the valve housing discharge passage 5-1. To cause reverse rotation. When the reverse rotation occurs, a lot of noise is generated, there is a problem that the fixed, turning scroll lap contact occurs the risk of lap breakage.

따라서, 본 발명의 목적은 상기와 같은 문제점을 해결하기 위해 안출한 것으로, 역지변 구조에서의 역지변과 밸브하우징의 스토퍼부 사이의 면접촉부에 오일이 작용하여 그 점도의 영향으로 압축기 운전정지시 고,저압 분리판 토출공을 폐쇄하는 시간이 지연이 되어 압축실내에 토출된 가스가 유입되게 되어 선회스크롤의 역회전에 의한 소음발생과 고정,선회스크롤 랩 접촉에 의한 파손을 미연에 방지하도록 한 스크롤 압축기의 역류방지장치를 제공함에 있다.Accordingly, an object of the present invention is to solve the above problems, the oil acts on the surface contact portion between the reverse displacement in the reverse displacement structure and the stopper portion of the valve housing to stop the compressor operation under the influence of the viscosity The delayed closing time of the high and low pressure separating plate discharge hole causes the discharged gas to flow into the compression chamber to prevent noise caused by reverse rotation of the rotating scroll and damage caused by the fixed and rotating scroll wrap contact. It is to provide a non-return device for a scroll compressor.

이러한, 본 발명의 목적은 토출포트를 통한 냉매가 역지변을 지나 밸브하우징을 통과하도록 한 스크롤 압축기에 있어서, 상기 역지변과 접하는 밸브하우징에 점착방지돌기를 형성함으로써 달성된다.The object of the present invention is achieved by forming an anti-stick protrusion on a valve housing in contact with the reverse valve in a scroll compressor in which a refrigerant through the discharge port passes through the reverse valve and passes through the valve housing.

이하, 본 발명에 의한 스크롤 압축기의 역류방지장치를 첨부도면에 도시한 실시예에 따라서 설명한다.Hereinafter, the backflow prevention apparatus of the scroll compressor according to the present invention will be described according to the embodiment shown in the accompanying drawings.

제6도는 본 발명에 의한 압축기의 밸브하우징을 나타내는 단면도이고, 제7도는 본 발명에 의한 압축기의 역지변을 구비한 밸브하우징을 나타내는 단면도이며, 제8도 및 제9도는 본 발명에 의한 압축기의 역류방지장치의 다른 실시예를 나타내는 것으로서, 제8도는 역지변을 구비한 밸브하우징을 나타내는 단면도이고, 제9도는 역지변을 나타내는 평면도를 각각 보인 것이다.6 is a cross-sectional view showing a valve housing of the compressor according to the present invention, Figure 7 is a cross-sectional view showing a valve housing having a reverse displacement of the compressor according to the present invention, Figures 8 and 9 are views of the compressor according to the present invention As another embodiment of the non-return apparatus, FIG. 8 is a cross-sectional view showing a valve housing having a reverse displacement, and FIG. 9 is a plan view showing a reverse displacement, respectively.

이에 도시한 바와 같이, 본 발명에 의한 스크롤 압축기의 역류방지장치는 토출포트를 통한 냉매가 역지변을 지나 밸브하우징을 통과하도록 한 스크롤 압축기에 있어서, 상기 역지변(21)과 접하는 밸브하우징(31)에 점착방지돌기(32)를 형성한다.As shown in the drawing, the non-return device of the scroll compressor according to the present invention is a scroll compressor in which a refrigerant through a discharge port passes through a reverse valve and passes through a valve housing, wherein the valve housing 31 is in contact with the reverse valve 21. The anti-sticking projection 32 is formed on the back side.

본 발명의 다른 실시예로 토출포트를 통한 냉매가 역지변을 지나 밸브하우징을 통과하도록 한 스크롤 압축기에 있어서, 상기 밸브하우징(31')과 접하는 역지변(21')에 점착방지돌기(22)를 형성한다.In another embodiment of the present invention, in a scroll compressor in which a refrigerant through a discharge port passes through a reverse valve and passes through a valve housing, an anti-sticking protrusion 22 is formed on the reverse valve 21 'in contact with the valve housing 31'. To form.

이와 같이 형성된 본 발명에 의한 스크롤 압축기의 역류방지장치의 작용효과를 설명하면 다음과 같다.Referring to the effect of the backflow prevention device of the scroll compressor according to the present invention formed as described above are as follows.

본 발명은 역지변 스토퍼부 또는 역지변 원판부의 상면에 점착방지돌기(32)(22)를 형성하여, 상기 역지변 스토퍼부와 역지변 원판부의 상면 사이의 접촉부의 접촉면적을 최소로 구성, 상기 접촉부의 오일의 점도에 의한 접착력이 최소로 작용하게 하여 압축기의 운전정지시 제2토출실(7)의 토출가스의 압력이 역지변의 상면에 작용하여 최소한 시간내에 고,저압 분리판의 토출공(6)을 폐쇄하게 작용한다.The present invention forms an anti-sticking projection (32) (22) on the upper side of the reverse side stopper portion or the reverse side negative disc portion, the contact area between the reverse side stopper portion and the upper side of the reverse side negative disc portion is configured to a minimum, the The adhesion force due to the viscosity of the oil in the contact portion is minimized, and the pressure of the discharge gas of the second discharge chamber 7 acts on the upper surface of the reverse displacement when the compressor is stopped. (6) acts to close.

종래 구성과 동일 부분에 대하여는 동일 부호를 부여하였다.The same code | symbol is attached | subjected about the same part as a conventional structure.

이상에서 설명한 바와 같이, 본 발명에 의한 스크롤 압축기의 역류방지장치는 토출포트를 통한 냉매가 역지변을 지나 밸브하우징을 통과하도록 한 스크롤 압축기에 있어서, 상기 역지변과 접하는 밸브하우징이나, 혹은 밸브하우징에 접하는 역지변에 점착방지돌기를 형성함으로써, 역지변 구조에서의 역지변과 밸브하우징의 스토퍼부 사이의 면접촉부에 오일이 작용하여 그 점도의 영향으로 압축기 운전정지시 고,저압 분리판 토출공을 폐쇄하는 시간이 지연이 되어 압축실내에 토출된 가스가 유입되게 되어 선회스크롤의 역회전에 의한 소음발생과 고정,선회스크롤 랩 접촉에 의한 파손을 미연에 방지하도록 한 효과가 있다.As described above, the non-return device of the scroll compressor according to the present invention is a scroll compressor in which a refrigerant through a discharge port passes through a reverse valve and passes through a valve housing, and includes a valve housing or a valve housing in contact with the reverse valve. By forming an anti-stick protrusion on the reverse side facing the oil, the oil acts on the surface contact portion between the reverse side in the reverse side and the stopper part of the valve housing, and the compressor stops under the influence of the viscosity. As the time for closing the gas is delayed, the gas discharged into the compression chamber is introduced to prevent the occurrence of noise caused by the reverse rotation of the rotating scroll and the damage caused by the fixed and rotating scroll wrap contact.

Claims (2)

토출포트를 통한 냉매가 역지변을 지나 밸브하우징을 통과하도록 한 스크롤 압축기에 있어서, 상기 역지변과 접하는 밸브하우징에 점착방지돌기를 형성한 것을 특징으로 하는 스크롤 압축기의 역류방지장치.A scroll compressor in which a refrigerant through a discharge port passes through a reverse valve and passes through a valve housing, wherein the anti-stick protrusion is formed in the valve housing in contact with the reverse valve. 토출포트를 통한 냉매가 역지변을 지나 밸브하우징을 통과하도록 한 스크롤 압축기에 있어서, 상기 밸브하우징과 접하는 역지변에 점착방지돌기를 형성한 것을 특징으로 하는 스크롤 압축기의 역류방지장치.A scroll compressor in which a refrigerant through a discharge port passes through a reverse valve and passes through a valve housing, wherein the anti-stick protrusion is formed on the reverse valve in contact with the valve housing.
KR1019960005352A 1996-02-29 1996-02-29 Anti-reverse flow device of scroll compressor KR0162469B1 (en)

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