KR20020040039A - Apparatus for protecting gas-leakage of rotary compressor - Google Patents

Apparatus for protecting gas-leakage of rotary compressor Download PDF

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Publication number
KR20020040039A
KR20020040039A KR1020000069948A KR20000069948A KR20020040039A KR 20020040039 A KR20020040039 A KR 20020040039A KR 1020000069948 A KR1020000069948 A KR 1020000069948A KR 20000069948 A KR20000069948 A KR 20000069948A KR 20020040039 A KR20020040039 A KR 20020040039A
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KR
South Korea
Prior art keywords
cylinder
casing
inlet
rotary compressor
suction
Prior art date
Application number
KR1020000069948A
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Korean (ko)
Inventor
이재열
Original Assignee
구자홍
엘지전자주식회사
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Priority to KR1020000069948A priority Critical patent/KR20020040039A/en
Publication of KR20020040039A publication Critical patent/KR20020040039A/en

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Classifications

    • 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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/005—Axial sealings for working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/122—Cylinder block
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • 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
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • 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
    • F04C2210/22—Fluid gaseous, i.e. compressible
    • 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
    • F04C2240/50—Bearings
    • 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
    • F04C29/06—Silencing
    • F04C29/065—Noise dampening volumes, e.g. muffler chambers
    • 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
    • F04C29/06—Silencing
    • F04C29/068—Silencing the silencing means being arranged inside the pump housing

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

PURPOSE: A device for preventing gas leakage of hermetic type rotary compressor is provided to prevent compressed gas, discharged from a casing, from flowing back into cylinder. CONSTITUTION: A device includes a cylinder(5); an inlet pipe(SP); and a sealing member(10). The cylinder is installed in a casing(1) and has a hermetic space with an outlet, fluidically connected with a discharge pipe of the casing, and an inlet(5a) through which fluid flows from an outside of the casing. The inlet pipe is fluidically connected with the inlet so that fluid flows in through the inlet on driving of a rotary body, eccentrically rotating in the hermetic space of the cylinder. The sealing member is elastically inserted between the inlet of the cylinder and the inlet pipe facing the inlet to prevent compressed gas, discharged to the casing, from flowing back into the hermetic space of the cylinder.

Description

밀폐형 회전식 압축기의 가스누설 방지장치{APPARATUS FOR PROTECTING GAS-LEAKAGE OF ROTARY COMPRESSOR}Gas leak prevention device of hermetic rotary compressor {APPARATUS FOR PROTECTING GAS-LEAKAGE OF ROTARY COMPRESSOR}

본 발명은 밀폐형 회전식 압축기의 가스누설 방지장치에 관한 것으로, 특히 실린더로부터 토출된 압축가스의 일부가 다시 실린더로 재흡입되는 것을 방지하는데 적합한 밀폐형 회전식 압축기의 가스누설 방지장치에 관한 것이다.The present invention relates to a gas leakage preventing apparatus of a hermetic rotary compressor, and more particularly, to a gas leakage preventing apparatus of a hermetic rotary compressor suitable for preventing a part of the compressed gas discharged from the cylinder from being re-intake into the cylinder.

일반적으로 에어컨 등에 적용되는 밀폐형 회전식 압축기는 전동기구부에 일체된 회전축에 압축기구부의 롤링피스톤이 편심되게 결합되고, 그 롤링피스톤이 원형 실린더 내에서 선회운동을 하면서 냉매가스를 흡입 압축하여 토출시키는 것으로, 종래의 밀폐형 회전식 압축기는 도 1에 도시된 바와 같다.In general, a hermetic rotary compressor applied to an air conditioner is eccentrically coupled with a rolling piston of a compression mechanism unit to a rotating shaft integrated with an electric mechanism part, and the rolling piston sucks and discharges refrigerant gas while turning in a circular cylinder. The conventional hermetic rotary compressor is as shown in FIG.

이에 도시된 바와 같이 종래의 밀폐형 회전식 압축기는, 소정량의 오일이 채워지고 흡입관(SP)과 토출관(DP)이 구비되는 케이싱(1)의 내부에 전동기구부인 고정자(2) 및 회전자(3)가 설치되고, 그 중 회전자(3)의 중심에는 회전축(4)이 압입되며, 그 회전축(4)의 하부에는 압축기구부가 설치되어 이루어져 있다.As shown in the related art, the conventional hermetic rotary compressor includes a stator 2 and a rotor, which are electric motor parts inside a casing 1 in which a predetermined amount of oil is filled and the suction pipe SP and the discharge pipe DP are provided. 3) is installed, the rotating shaft 4 is press-fitted in the center of the rotor 3, the compression mechanism is provided in the lower portion of the rotating shaft (4).

상기 압축기구부는 케이싱(1)의 내주면에 고정되어 흡입관(SP)과 연통되는 원형의 실린더(5)와, 그 실린더(5)의 양측면에 밀착되는 동시에 회전축(4)이 관통되는 상부베어링(6A) 및 하부베어링(6B)과, 상기 회전축(4)에 접동되어 자전하면서 실린더(5)내에서 편심 회전하는 롤링피스톤(7)과, 그 롤링피스톤(7)의 외주면에 압접되어 롤링피스톤(7)의 선회운동시 직선운동을 하면서 실린더(5)를 흡입공간과 압축공간으로 구분하는 베인(미도시)을 포함하여 이루어져 있다.The compression mechanism is fixed to the inner circumferential surface of the casing (1), the circular cylinder (5) in communication with the suction pipe (SP), and the upper bearing (6A) which is in close contact with both sides of the cylinder (5) and through which the rotating shaft (4) is penetrated. ) And the lower bearing 6B, the rolling piston 7 which is eccentrically rotated in the cylinder 5 while being rotated and rotated by the rotation shaft 4, and the rolling piston 7 by being pressed against the outer circumferential surface of the rolling piston 7 ) And a vane (not shown) for dividing the cylinder (5) into a suction space and a compression space while performing a linear movement during the pivoting movement of.

상기 흡입관(SP)은 케이싱(1)의 일측에 관통 삽입된 버섯모양의 제1 흡입안내관(8A)에 압입되어 연통되고, 상기 흡입관(SP)의 끝단에는 실린더(5)의 흡입구(5a)에 삽입된 제2 흡입안내관(8B)이 삽입되어 있다.The suction pipe SP is pressed into and communicates with the mushroom-shaped first suction guide tube 8A inserted through one side of the casing 1, and the suction port 5a of the cylinder 5 is connected to the end of the suction tube SP. The second suction guide tube 8B inserted therein is inserted.

도면중 미설명 부호인 6a는 토출구멍, 9A는 토출밸브 조립체, 9B는 토출머플러, A는 어큐뮬레이터이다.In the figure, reference numeral 6a denotes a discharge hole, 9A denotes a discharge valve assembly, 9B denotes a discharge muffler, and A denotes an accumulator.

상기와 같이 구성된 종래의 밀폐형 회전식 압축기의 동작은 다음과 같다.The operation of the conventional hermetic rotary compressor configured as described above is as follows.

즉, 상기 고정자(2)에 전원이 인가되면 그 전원의 인가에 따라 회전자(3)가 고정자(2)의 내부에서 회전을 하게 되고, 이와 함께 회전축(4)이 회전을 하면서 롤링피스톤(7)이 실린더(5)내에서 편심 회전을 하게 되며, 그 롤링피스톤(7)의 편심회전에 따라 냉매가스가 실린더(5)의 흡입공간으로 흡입되었다가 일정압력까지 지속적으로 압축되고, 그 실린더(5)의 압축공간 압력이 임계압력을 지나 케이싱(1)내의 압력보다 고압이 되는 순간 상기 상부베어링(6A)에 장착된 토출밸브(9A)가 열리면서 압축가스가 압축공간에서 케이싱(1)의 내부로 토출되며, 이 토출가스는 케이싱(1)과 고정자(2) 사이의 틈새 또는 고정자(2)와 회전자(3) 사이의 틈새 등을 통해 상부로 이동하여 토출관(DP)을 거쳐 냉동사이클시스템으로 배출되는 것이었다.That is, when power is applied to the stator 2, the rotor 3 rotates inside the stator 2 according to the application of the power, and the rotating shaft 4 rotates while the rolling piston 7 rotates. ) Eccentric rotation in the cylinder (5), the refrigerant gas is sucked into the suction space of the cylinder (5) in accordance with the eccentric rotation of the rolling piston (7) is continuously compressed to a constant pressure, the cylinder ( At the moment when the compression space pressure of 5) becomes higher than the pressure in the casing 1 through the critical pressure, the discharge valve 9A mounted on the upper bearing 6A is opened, and compressed gas is introduced into the casing 1 in the compression space. Discharge gas flows upward through a gap between the casing 1 and the stator 2 or a gap between the stator 2 and the rotor 3 and passes through the discharge pipe DP to provide a freezing cycle. It was discharged to the system.

그러나, 상기와 같은 종래 밀폐형 회전식 압축기에 있어서는, 상기 제1 흡입안내관(8A)은 케이싱(1)에 용접 결합되는 반면 그 실린더(5)와 제1 흡입안내관(8A)의 사이 및 상기 실린더(5)의 흡입구(5a)와 제2 흡입안내관(8A)의 사이에는 각각 가공오차나 또는 변형오차 등으로 인한 틈새(G)가 존재하게 되므로, 상기 케이싱(1)의 내부로 토출된 압축가스의 일부가 이 실린더(5)와 제1 흡입안내관(8A)사이 및 실린더(5)의 흡입구(5a)와 제2 흡입안내관(8B) 사이의 틈새(G)를 통해 실린더(5)의 흡입공간으로 재흡입되어 냉매가스의 비체적을 상승시킴에 따라 압축기의 성능이 저하되는 것은 물론 심할 경우 냉매가스의 흡입압이 지나치게 상승하여 구동축(4)을 정상적인 회전을 방해함에 따라 압축기의 신뢰성을 저하시킬 우려도 있었다.However, in the above conventional hermetic rotary compressor, the first suction guide tube 8A is welded to the casing 1 while between the cylinder 5 and the first suction guide tube 8A and the cylinder. Since a gap G due to a machining error or a deformation error exists between the suction port 5a and the second suction guide tube 8A of (5), respectively, the compression discharged into the casing 1 is performed. A portion of the gas is introduced into the cylinder 5 through the gap G between the cylinder 5 and the first suction guide tube 8A and between the suction port 5a of the cylinder 5 and the second suction guide tube 8B. As the specific volume of refrigerant gas is increased by re-suctioning into the suction space of the compressor, the performance of the compressor is not only deteriorated, but in severe cases, the suction pressure of the refrigerant gas is excessively increased, which hinders the normal rotation of the drive shaft (4). There was also a risk of deterioration.

본 발명은 상기와 같은 종래 밀폐형 회전식 압축기가 가지는 문제점을 감안하여 안출한 것으로, 상기 케이싱으로 토출된 압축가스가 다시 실린더로 재흡입되는 것을 방지할 수 있는 밀폐형 회전식 압축기의 가스누설 방지장치를 제공하려는데 그 목적이 있다.The present invention has been made in view of the problems of the conventional hermetic rotary compressor as described above, and to provide a gas leakage preventing device of the hermetic rotary compressor that can prevent the compressed gas discharged to the casing to be re-intake back into the cylinder. The purpose is.

도 1은 종래 밀폐형 회전식 압축기의 일례를 보인 종단면도.1 is a longitudinal sectional view showing an example of a conventional hermetic rotary compressor.

도 2는 도 1의 "A"부를 보인 상세도.FIG. 2 is a detailed view showing part “A” of FIG. 1;

도 3은 본 발명 가스누설 방지장치가 구비된 밀폐형 회전식 압축기의 하반부를 보인 종단면도.Figure 3 is a longitudinal sectional view showing the lower half of the hermetic rotary compressor equipped with a gas leakage preventing device of the present invention.

도 4는 도 3의 "B"부를 보인 상세도.Figure 4 is a detailed view showing the "B" portion of FIG.

도 5는 본 발명 가스누설 방지장치의 실링부재를 보인 사시도.5 is a perspective view showing a sealing member of the gas leakage preventing device of the present invention.

도 6은 도 3의 "B"부에 대한 변형예를 보인 상세도.6 is a detailed view showing a modification to the "B" part of FIG.

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

1 : 케이싱 5 : 실린더1: casing 5: cylinder

5a : 흡입구 5b : 단차면5a: suction port 5b: step surface

8A : 제1 흡입안내관 8B : 제2 흡입안내관8A: 1st suction guide 8B: 2nd suction guide

10 : 실링부재 SP : 흡입관10: sealing member SP: suction pipe

본 발명의 목적을 달성하기 위하여, 케이싱의 토출관에 연통되는 토출구와 그 케이싱의 외부로부터 유체가 유입되는 흡입구를 갖도록 밀폐공간이 구비되어 상기 케이싱의 내부에 장착되는 실린더와, 상기 실린더의 밀폐공간에서 편심회전하는 회전체의 구동시 흡입구를 통해 유체가 유입되도록 그 흡입구에 연통되는 흡입관과, 상기 실린더의 흡입구와 이에 대면되는 흡입관 사이에 탄성력을 갖도록 삽입되어 케이싱으로 토출된 압축가스가 다시 실린더의 밀폐공간으로 재흡입되는 것을 방지하는 실링부재를 포함한 밀폐형 회전식 압축기의 가스누설 방지장치가 제공된다.In order to achieve the object of the present invention, a closed space is provided to have a discharge port communicating with the discharge tube of the casing and the suction port for the fluid flowing from the outside of the casing, the cylinder is mounted inside the casing, the sealed space of the cylinder The compressed gas discharged into the casing is inserted between the suction pipe and the suction pipe of the cylinder and the suction pipe facing the cylinder so that fluid flows through the suction port when the rotating body rotates eccentrically. Provided is a gas leakage preventing device for a hermetic rotary compressor including a sealing member to prevent re-suction into a closed space.

이하, 본 발명에 의한 밀폐형 회전식 압축기의 가스누설 방지장치를 첨부도면에 도시된 일실시예에 의거하여 상세하게 설명한다.Hereinafter, the gas leakage preventing device of the hermetic rotary compressor according to the present invention will be described in detail based on the embodiment shown in the accompanying drawings.

도 3은 본 발명 가스누설 방지장치가 구비된 밀폐형 회전식 압축기의 하반부를 보인 종단면도이고, 도 4는 도 3의 "B"부를 보인 상세도이며, 도 5는 본 발명 가스누설 방지장치의 실링부재를 보인 사시도이다.Figure 3 is a longitudinal sectional view showing the lower half of the hermetic rotary compressor equipped with the present invention gas leakage preventing device, Figure 4 is a detailed view showing the "B" part of Figure 3, Figure 5 is a sealing member of the gas leakage preventing device of the present invention Is a perspective view.

이에 도시된 바와 같이 본 발명에 의한 가스누설 방지장치가 구비된 밀폐형 회전식 압축기에서 전동기구부에 의해 회전하면서 냉매가스를 흡입 압축하여 토출시키는 압축기구부는, 케이싱(1)의 내주면에 고정되어 흡입관(SP)과 연통되는 원형의 실린더(5)와, 그 실린더(5)의 양측면에 밀착되는 동시에 회전축(4)이 관통되는 상부베어링(6A) 및 하부베어링(6B)과, 상기 회전축(4)에 접동되어 자전하면서 실린더(5)내에서 편심 회전하는 롤링피스톤(7)과, 그 롤링피스톤(7)의 외주면에 압접되어 롤링피스톤(7)의 선회운동시 직선운동을 하면서 실린더(5)를 흡입공간과 압축공간으로 구분하는 베인(미도시)을 포함하여 구성된다.As shown in the drawing, the compressor mechanism for sucking and compressing and discharging the refrigerant gas while rotating by the electric mechanism part in the hermetic rotary compressor equipped with the gas leakage preventing device according to the present invention is fixed to the inner circumferential surface of the casing (1) and suction pipe (SP). ), A circular cylinder (5) in communication with, the upper bearing (6A) and the lower bearing (6B) in close contact with both sides of the cylinder (5) and through which the rotating shaft (4) penetrates, and the sliding shaft (4) slides. And the rolling piston 7 which rotates eccentrically in the cylinder 5 while rotating, and is pressed against the outer circumferential surface of the rolling piston 7 so as to perform a linear movement during the pivoting movement of the rolling piston 7, And vanes (not shown) divided into compressed spaces.

상기 흡입관(SP)은 케이싱(1)의 일측에 관통 삽입된 버섯모양의 제1 흡입안내관(8A)에 압입되어 연통되고, 상기 흡입관(SP)의 끝단에는 실린더(5)의 흡입구(5a)에 삽입된 제2 흡입안내관(8B)이 삽입되어 이루어진다.The suction pipe SP is pressed into and communicates with the mushroom-shaped first suction guide tube 8A inserted through one side of the casing 1, and the suction port 5a of the cylinder 5 is connected to the end of the suction tube SP. The second suction guide tube 8B inserted in the insert is made.

상기 실린더(5)의 흡입구(5a)에는 도 4 및 도 5에 도시된 바와 같이 제2 흡입안내관(8B)의 끝단에 대향되도록 단차면(5b)이 형성되고, 그 단차면(5b)과 이에 대응되는 제2 흡입안내관(8B)의 끝단면 사이에는 탄성력을 갖는 환형의 실링부재(10)가 장착된다.A step surface 5b is formed at the suction port 5a of the cylinder 5 so as to face the end of the second suction guide tube 8B as shown in FIGS. 4 and 5, and the step surface 5b and An annular sealing member 10 having an elastic force is mounted between the end surfaces of the second suction guide tube 8B corresponding thereto.

여기서, 도 6에 도시된 바와 같이 상기 실린더(5)의 내주면과 이에 대응되는 제2 흡입안내관(8B)의 외주면 사이에 탄성력을 갖는 환형의 실링부재(10)가 개재되어 장착될 수도 있다.Here, as illustrated in FIG. 6, an annular sealing member 10 having an elastic force may be interposed between the inner circumferential surface of the cylinder 5 and the outer circumferential surface of the second suction guide tube 8B corresponding thereto.

도면중 미설명 부호인 6a는 토출구멍, 9A는 토출밸브 조립체, 9B는 토출머플러이다.In the drawings, reference numeral 6a denotes a discharge hole, 9A denotes a discharge valve assembly, and 9B denotes a discharge muffler.

상기와 같이 구성된 본 발명의 가스누설 방지장치가 구비된 밀폐형 회전식 압축기의 작용효과는 다음과 같다.The working effect of the hermetic rotary compressor equipped with the gas leakage preventing device of the present invention configured as described above is as follows.

즉, 상기 전동기구부에 전원이 인가되어 회전축(4)이 회전자(3)와 함께 회전을 하게 되면, 상기 회전축(4)의 편심부에 결합된 롤링피스톤(7)이 실린더(5)의 밀폐공간에서 편심 회전을 하면서 냉매가스를 흡입영역으로 흡입하였다가 점차 압축영역으로 밀어 일정압력까지 압축시키게 되고, 이 과정에서 실린더(5)의 밀폐공간 압력이 케이싱(1)내 압력보다 높아지게 되는 시점에서 케이싱(1)으로 토출시키게 되며, 이 케이싱(1)의 내부로 토출되는 압축가스는 토출관(도 1에 도시)(DP)을 통해 통상의 냉동사이클장치로 유출되었다가 압축기구부의 흡입행정시 다시 흡입되는 일련의 과정을 반복하게 된다.That is, when the power is applied to the transmission mechanism to rotate the rotary shaft 4 together with the rotor 3, the rolling piston (7) coupled to the eccentric portion of the rotary shaft 4 is sealed of the cylinder (5) The refrigerant gas is sucked into the suction zone while being eccentrically rotated in the space and then gradually pushed into the compression zone to compress to a certain pressure. In this process, the pressure of the sealed space of the cylinder 5 becomes higher than the pressure in the casing 1. The compressed gas discharged into the casing 1 is discharged to the normal refrigeration cycle apparatus through the discharge pipe (shown in FIG. 1) DP, and then the suction stroke of the compressor mechanism The process of aspiration is repeated.

이때, 상기 케이싱(1)으로 토출된 압축가스의 일부가 실린더(5)와 제1 흡입안내관(8A) 사이의 틈새 및 상기 실린더(5)의 흡입구(5a)와 제2 흡입안내관(8B)의 외주면 사이의 틈새를 통해 실린더(5)로 재유입되려고 하나, 그 실린더(5)와 제2 흡입안내관(8B)의 접촉면에 실링부재(10)가 장착되어 재유입되려는 냉매가스를 차단하게 되므로 케이싱(1)으로 토출되었던 압축가스가 흡입구(5a)를 통해 실린더(5)로 역누설되는 것이 미연에 방지되는 것이다.At this time, a part of the compressed gas discharged to the casing 1 is a gap between the cylinder 5 and the first suction guide tube 8A, and the suction port 5a and the second suction guide tube 8B of the cylinder 5. However, the sealing member 10 is mounted on the contact surface of the cylinder 5 and the second suction guide tube 8B through a gap between the outer circumferential surfaces of the) and blocks the refrigerant gas to be reintroduced. Since the compressed gas discharged to the casing 1 is leaked back to the cylinder 5 through the inlet 5a, it is prevented in advance.

본 발명에 의한 밀폐형 회전식 압축기의 가스누설 방지장치는, 실린더의 흡입구와 이에 삽입된 흡입관의 사이에 실링부재를 개재시켜 구성함으로써, 상기 실린더로부터 토출된 압축가스가 실린더의 흡입구와 흡입관 사이의 틈새를 통해 재유입되는 것을 차단하게 되고, 이를 통해 압축가스의 재흡입으로 인한 흡입가스의 비체적 상승과 이로 인한 압축기 성능의 저하 및 신뢰성 저하를 미연에 방지하게 된다.The gas leakage preventing device of the hermetic rotary compressor according to the present invention comprises a sealing member interposed between a suction port of a cylinder and a suction pipe inserted therein, whereby compressed gas discharged from the cylinder forms a gap between the suction port of the cylinder and the suction pipe. It prevents the re-inflow through, thereby preventing the specific volume rise of the suction gas due to the re-suction of the compressed gas, thereby reducing the performance and reliability of the compressor.

Claims (3)

케이싱의 토출관에 연통되는 토출구와 그 케이싱의 외부로부터 유체가 유입되는 흡입구를 갖도록 밀폐공간이 구비되어 상기 케이싱의 내부에 장착되는 실린더와, 상기 실린더의 밀폐공간에서 편심회전하는 회전체의 구동시 흡입구를 통해 유체가 유입되도록 그 흡입구에 연통되는 흡입관과, 상기 실린더의 흡입구와 이에 대면되는 흡입관 사이에 탄성력을 갖도록 삽입되어 케이싱으로 토출된 압축가스가 다시 실린더의 밀폐공간으로 재흡입되는 것을 방지하는 실링부재를 포함한 밀폐형 회전식 압축기의 가스누설 방지장치.When a cylinder is mounted inside the casing to have a discharge space communicating with the discharge pipe of the casing, and a suction port through which fluid flows from the outside of the casing, and the rotating body eccentrically rotates in the sealed space of the cylinder. An inlet tube communicating with the inlet port to allow fluid to flow through the inlet port and an inlet tube facing the inlet tube and the inlet tube facing the cylinder to have elastic force to prevent the compressed gas discharged into the casing from being re-intake into the closed space of the cylinder Gas leakage prevention device of hermetic rotary compressor including sealing member. 제1항에 있어서, 상기 실링부재는 실린더의 흡입구에 형성되는 단차면과 이에 대향되는 흡입관의 끝단면 사이에 장착되는 것을 특징으로 하는 밀폐형 회전식 압축기의 가스누설 방지장치.The gas leakage preventing device of the hermetic rotary compressor according to claim 1, wherein the sealing member is mounted between a step surface formed at the suction port of the cylinder and an end surface of the suction pipe opposite thereto. 제1항에 있어서, 상기 실링부재는 실린더의 흡입구 내주면과 이에 대향되는 흡입관의 외주면 사이에 장착되는 것을 특징으로 하는 밀폐형 회전식 압축기의 가스누설 방지장치.The gas leakage preventing device of the hermetic rotary compressor according to claim 1, wherein the sealing member is mounted between an inner circumferential surface of the inlet of the cylinder and an outer circumferential surface of the suction pipe opposite thereto.
KR1020000069948A 2000-11-23 2000-11-23 Apparatus for protecting gas-leakage of rotary compressor KR20020040039A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57129285A (en) * 1981-02-02 1982-08-11 Hitachi Ltd Rotary compressor
JPS58119988A (en) * 1982-01-08 1983-07-16 Sanyo Electric Co Ltd Suction device of rotary compressor
JPH01301966A (en) * 1987-10-14 1989-12-06 Mitsubishi Electric Corp Hermetically sealed rotary compressor
JPH03260392A (en) * 1990-03-09 1991-11-20 Sanyo Electric Co Ltd Rotary compressor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57129285A (en) * 1981-02-02 1982-08-11 Hitachi Ltd Rotary compressor
JPS58119988A (en) * 1982-01-08 1983-07-16 Sanyo Electric Co Ltd Suction device of rotary compressor
JPH01301966A (en) * 1987-10-14 1989-12-06 Mitsubishi Electric Corp Hermetically sealed rotary compressor
JPH03260392A (en) * 1990-03-09 1991-11-20 Sanyo Electric Co Ltd Rotary compressor

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