KR100265038B1 - A check valve of scroll compressor - Google Patents

A check valve of scroll compressor Download PDF

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Publication number
KR100265038B1
KR100265038B1 KR1019970078230A KR19970078230A KR100265038B1 KR 100265038 B1 KR100265038 B1 KR 100265038B1 KR 1019970078230 A KR1019970078230 A KR 1019970078230A KR 19970078230 A KR19970078230 A KR 19970078230A KR 100265038 B1 KR100265038 B1 KR 100265038B1
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South Korea
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check valve
refrigerant discharge
top plate
cross
discharge passage
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KR1019970078230A
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Korean (ko)
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KR19990058143A (en
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최찬규
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윤종용
삼성전자주식회사
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Priority to KR1019970078230A priority Critical patent/KR100265038B1/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
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

PURPOSE: A check valve of a scroll compressor is provided to reduce discharge passage loss and overcompression loss by enlarging a refrigerant discharge area of a cross-shaped refrigerant discharge passage on a top plate. CONSTITUTION: A check valve(17) is mounted at a valve mounting portion on a fixed scroll. The check valve has a rectangular form having the same diameter as a diameter(D) of the valve mounting portion. The check valve has each edge portion rounded at a specific curvature. If the check valve is raised up by compressed refrigerant to close a cross-shaped refrigerant discharge passage of a top plate(6), the cross-shaped refrigerant discharge passage has a slightly larger discharge area than one closed by a former check valve. Therefore, the refrigerant discharge area is enlarged and discharge passage loss is reduced.

Description

스크롤 압축기의 체크 밸브Check valve of scroll compressor

본 발명은 스크롤 압축기의 체크 밸브에 관한 것으로, 보다 상세하게는 탑 플레이트에 형성되어 있는 십자형 냉매 토출 유로의 냉매 토출 면적을 증대시키므로써 토출 유로 손실 및 과압축 손실을 감소시킬 수 있도록 한 스크롤 압축기의 체크 밸브에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a check valve of a scroll compressor, and more particularly, to an increase in refrigerant discharge area of a cross-shaped refrigerant discharge flow path formed in a top plate, thereby reducing discharge flow path loss and overcompression loss. Relates to a check valve.

스크롤 압축기의 케이싱내에는 도 1에 도시된 바와 같이, 랩(1')을 가진 고정 스크롤(1)과, 랩(2')을 가진 요동 스크롤(2)이 적당한 방식으로 설치된다.In the casing of the scroll compressor, as shown in Fig. 1, a fixed scroll 1 with a lap 1 'and a rocking scroll 2 with a lap 2' are provided in a suitable manner.

고정 스크롤(1)에는 압축실(3)에 연통되는 냉매 토출 유로(4)와, 냉매 토출 유로(4)를 관통하는 원통형 보어(5)가 형성되어 있고, 고정 스크롤(1)의 상부로는 탑 플레이트(6)가 설치되어 있으며, 고정 스크롤(1)에 형성된 냉매 토출 유로(4)를 개폐하므로써 압축기가 정지된 경우에 반전된 압력차로 인하여 요동 스크롤(2)이 역회전되는 것을 방지하도록 고정 스크롤(1)의 상면에 형성된 밸브 안착부에는 체크 밸브(7)가 안착되어 있고, 체크 밸브(7)와 밸브 안착부는 동일한 직경(D)을 갖도록 형성되어 있다.The fixed scroll 1 is formed with a refrigerant discharge passage 4 communicating with the compression chamber 3 and a cylindrical bore 5 penetrating through the refrigerant discharge passage 4. The top plate 6 is provided and fixed to prevent the swinging scroll 2 from rotating backward due to the inverted pressure difference when the compressor is stopped by opening and closing the refrigerant discharge flow path 4 formed in the fixed scroll 1. The check valve 7 is seated on the valve seating portion formed on the upper surface of the scroll 1, and the check valve 7 and the valve seating portion are formed to have the same diameter D.

도 2 및 도 3은 도 1의 탑 플레이트를 도시한 것으로, 탑 플레이트(6)에는 탑 플레이트(6)를 고정하기 위한 도시하지 않은 볼트가 삽입되는 3개의 볼트 구멍(8)과, 고정 스크롤(1)의 냉매 토출 유로(4)를 통과한 냉매가 토출되는 십자형 냉매 토출 유로(9)가 형성되어 있다.2 and 3 show the top plate of FIG. 1, wherein the top plate 6 has three bolt holes 8 into which a bolt (not shown) for fixing the top plate 6 is inserted, and a fixed scroll ( A cross-shaped refrigerant discharge passage 9 through which the refrigerant passing through the refrigerant discharge passage 4 of 1) is discharged is formed.

이에 따라, 압축실(3)내의 냉매가 일정 압력 이상으로 압축되면, 체크 밸브(7)는 압축된 냉매에 의해 위로 밀어올려지게 된다.Accordingly, when the refrigerant in the compression chamber 3 is compressed above a certain pressure, the check valve 7 is pushed up by the compressed refrigerant.

이때, 탑 플레이트(6)의 십자형 냉매 토출 유로(9)는 도 2의 빗금친 부분만 체크 밸브(7)에 의해 폐쇄되는바, 압축실(3)에서 압축된 냉매는 십자형 냉매 토출 유로(9)의 빗금친 부분을 제외한 나머지 부분을 통해서 토출 챔버(10)로 토출된다.At this time, the cross-shaped refrigerant discharge flow path 9 of the top plate 6 is closed by the check valve 7 only the hatched portions of FIG. 2, and the refrigerant compressed in the compression chamber 3 is the cross-type refrigerant discharge flow path 9. Is discharged to the discharge chamber 10 through the remaining portion except for the hatched portion.

그리고, 압축기의 정지시나 토출 챔버내의 압력이 압축실내의 압력보다 큰 경우 체크 밸브(7)는 냉매 토출 유로(4)를 폐쇄하도록 다시 고정 스크롤(1)의 밸브 안착부에 안착된다.Then, when the compressor is stopped or the pressure in the discharge chamber is greater than the pressure in the compression chamber, the check valve 7 is seated on the valve seat of the fixed scroll 1 again to close the refrigerant discharge flow path 4.

이와 같이, 종래의 체크 밸브는 일정한 무게를 갖는 원형의 판으로 형성되어 있으므로, 체크 밸브가 압축 냉매에 의해 상측으로 밀어올려진 상태에서는 탑 플레이트에 형성된 십자형 냉매 토출 유로의 많은 부분을 폐쇄하게 되어, 십자형 냉매 토출 유로의 냉매 토출 면적이 만족스럽지 못한 문제점이 있었다.Thus, since the conventional check valve is formed of a circular plate having a constant weight, a large portion of the cross-shaped refrigerant discharge flow path formed in the top plate is closed when the check valve is pushed upward by the compressed refrigerant, There has been a problem that the refrigerant discharge area of the cruciform refrigerant discharge passage is not satisfactory.

본 발명은 상기한 문제점을 해결하기 위한 것으로, 탑 플레이트에 형성되어 있는 십자형 냉매 토출 유로의 냉매 토출 면적을 증대시키므로써 토출 유로 손실 및 과압축 손실을 감소시킬 수 있도록 한 스크롤 압축기의 체크 밸브를 제공하는 것을 목적으로 한다.SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides a check valve of a scroll compressor to reduce the discharge flow path loss and the overcompression loss by increasing the refrigerant discharge area of the cross-shaped refrigerant discharge flow path formed in the top plate. It aims to do it.

도 1은 일반적인 스크롤 압축기의 상부를 나타내는 개략 구성도.1 is a schematic configuration diagram showing an upper portion of a general scroll compressor.

도 2는 도 1의 탑 플레이트의 평면도.2 is a plan view of the top plate of FIG.

도 3은 도 2의 "A-A" 단면도.3 is a cross-sectional view taken along line “A-A” of FIG. 2.

도 4는 본 발명에 따른 체크 밸브의 평면도.4 is a plan view of a check valve according to the present invention;

도 5는 본 발명에 따른 체크 밸브가 설치된 상태의 탑 플레이트의 평면도.5 is a plan view of a top plate in a state in which a check valve according to the present invention is installed.

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

6 : 탑 플레이트 9 : 십자형 유로6: top plate 9: cross-shaped flow path

17 : 체크 밸브17: check valve

상기 목적을 달성하기 위한 본 발명에 따른 스크롤 압축기의 체크 밸브는, 압축실에서 압축된 냉매에 의해 탑 플레이트 내부에서 상하로 이동되면서 고정 스크롤에 형성된 냉매 토출 유로와 탑 플레이트에 형성된 십자형 냉매 토출 유로를 개방 및 폐쇄하도록 고정 스크롤의 상면에 형성된 소정 직경의 밸브 안착부에 안착되는 스크롤 압축기의 체크 밸브에 있어서, 상기 체크 밸브는 마주보는 모서리까지의 대각선 길이가 상기 밸브 안착부의 직경과 동일한 길이를 갖는 사각형상의 판으로 이루어지는 것을 특징으로 한다.The check valve of the scroll compressor according to the present invention for achieving the above object, the refrigerant discharge passage formed in the fixed scroll and the cross-shaped refrigerant discharge passage formed in the top plate while moving up and down inside the top plate by the refrigerant compressed in the compression chamber. A check valve of a scroll compressor seated on a valve seat having a predetermined diameter formed on an upper surface of a fixed scroll to open and close, wherein the check valve has a quadrangle having a diagonal length to an opposite edge having a length equal to the diameter of the valve seat. Characterized in that the upper plate.

이하, 도 4 및 도 5를 참조로 하여 본 발명에 따른 스크롤 압축기의 체크 밸브의 바람직한 실시예를 상세히 설명하면 다음과 같다.Hereinafter, a preferred embodiment of the check valve of the scroll compressor according to the present invention with reference to Figures 4 and 5 as follows.

도 4는 본 발명에 따른 체크 밸브를 도시한 평면도로서, 고정 스크롤(1)의 상면에 형성된 소정 직경의 밸브 안착부에 안착되는 체크 밸브(17)는 밸브 안착부의 직경과 동일한 직경을 갖도록 형성된 종래 기술에 따른 체크 밸브(도 2의 7)의 빗금친 부분을 제거하여 형성한 사각형상의 판으로 이루어진다.4 is a plan view illustrating a check valve according to the present invention, in which a check valve 17 seated on a valve seat having a predetermined diameter formed on an upper surface of the fixed scroll 1 is formed to have a diameter equal to the diameter of the valve seat. It consists of a rectangular plate formed by removing the hatched portion of the check valve (7 of FIG. 2) according to the technique.

즉, 체크 밸브(17)는 마주보는 모서리까지의 길이인 대각선 길이가 밸브 안착부의 직경(D)과 동일한 길이를 갖는 사각형상의 판으로 이루어진다.That is, the check valve 17 consists of a rectangular plate whose diagonal length, which is the length to the opposite edge, has the same length as the diameter D of the valve seat.

이와 같이 사각형상의 판으로 이루어진 체크 밸브(17)의 각 모서리부는 소정 곡률로 라운딩 처리될 수 있다.In this way, each corner portion of the check valve 17 formed of a rectangular plate may be rounded to a predetermined curvature.

이에 따라, 압축 냉매에 의해 체크 밸브(17)가 탑 플레이트(6)의 십자형 냉매 토출 유로(9)를 폐쇄하도록 밀어올려진 경우, 십자형 냉매 토출 유로(9)는 종래의 체크 밸브(7)에 의해 폐쇄된 경우에 비해 조금 더 넓은 토출 면적, 즉 도 5의 빗금친 부분만큼의 토출 면적을 더 가질 수 있게 된다.Accordingly, when the check valve 17 is pushed up to close the cross-shaped refrigerant discharge flow path 9 of the top plate 6 by the compressed refrigerant, the cross-shaped refrigerant discharge flow path 9 is connected to the conventional check valve 7. As compared with the case of closing, it is possible to have a slightly larger discharge area, that is, the discharge area of the hatched portion of FIG. 5.

상기와 같이 구성된 본 발명에 따른 스크롤 압축기의 체크 밸브에 의하면, 체크 밸브에 의해 폐쇄되는 십자형 냉매 토출 유로의 면적이 종래에 비해 감소되므로, 십자형 냉매 토출 유로를 통해 토출될 수 있는 냉매 토출 면적이 증가됨과 아울러, 토출 유로 손실이 감소된다.According to the check valve of the scroll compressor according to the present invention configured as described above, since the area of the cross-type refrigerant discharge passage closed by the check valve is reduced compared to the conventional, the refrigerant discharge area that can be discharged through the cross-type refrigerant discharge passage is increased In addition, the discharge flow path loss is reduced.

또한, 체크 밸브의 무게가 종래에 비해 감소되므로, 보다 작은 압축력으로 냉매를 압축하더라도 체크 밸브를 밀어올릴 수 있게 되어 냉매의 과압축 손실을 감소시킬 수 있게 된다.In addition, since the weight of the check valve is reduced compared with the related art, the check valve can be pushed up even if the refrigerant is compressed with a smaller compression force, thereby reducing the overcompression loss of the refrigerant.

Claims (2)

압축실에서 압축된 냉매에 의해 탑 플레이트 내부에서 상하로 이동되면서 고정 스크롤에 형성된 냉매 토출 유로와 탑 플레이트에 형성된 십자형 냉매 토출 유로를 개방 및 폐쇄하도록 고정 스크롤의 상면에 형성된 소정 직경의 밸브 안착부에 안착되는 스크롤 압축기의 체크 밸브에 있어서, 상기 체크 밸브는 마주보는 모서리까지의 대각선 길이가 상기 밸브 안착부의 직경과 동일한 길이를 갖는 사각형상의 판으로 이루어지는 것을 특징으로 하는 스크롤 압축기의 체크 밸브.A valve seat having a predetermined diameter formed on the upper surface of the fixed scroll to open and close the refrigerant discharge flow path formed in the fixed scroll and the cross-shaped refrigerant discharge flow path formed in the top plate while moving up and down inside the top plate by the refrigerant compressed in the compression chamber. The check valve of a scroll compressor to be seated, wherein the check valve is a check valve of a scroll compressor, characterized in that the diagonal length to the opposite edge has a rectangular plate having the same length as the diameter of the valve seat. 제 1항에 있어서, 상기 사각형상의 판의 각 모서리는 소정 곡률로 라운딩 처리된 것을 특징으로 하는 스크롤 압축기의 체크 밸브.The check valve of a scroll compressor according to claim 1, wherein each corner of the rectangular plate is rounded with a predetermined curvature.
KR1019970078230A 1997-12-30 1997-12-30 A check valve of scroll compressor KR100265038B1 (en)

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KR100265038B1 true KR100265038B1 (en) 2000-09-01

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