KR20020031622A - Shaft vibration reduce structure for rotary compressor - Google Patents

Shaft vibration reduce structure for rotary compressor Download PDF

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Publication number
KR20020031622A
KR20020031622A KR1020000061856A KR20000061856A KR20020031622A KR 20020031622 A KR20020031622 A KR 20020031622A KR 1020000061856 A KR1020000061856 A KR 1020000061856A KR 20000061856 A KR20000061856 A KR 20000061856A KR 20020031622 A KR20020031622 A KR 20020031622A
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KR
South Korea
Prior art keywords
rotary compressor
axial vibration
rotating shaft
center
rotor
Prior art date
Application number
KR1020000061856A
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Korean (ko)
Inventor
김종율
Original Assignee
구자홍
엘지전자주식회사
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Priority to KR1020000061856A priority Critical patent/KR20020031622A/en
Publication of KR20020031622A publication Critical patent/KR20020031622A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/007—General arrangements of parts; Frames and supporting elements
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0021—Systems for the equilibration of forces acting on the pump
    • 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
    • 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

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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 structure for reducing axial vibration of rotary compressor is provided to improve reliability by reducing even vibration generated on low speed operation. CONSTITUTION: An upper part supportive frame(40) is installed on an inner upper part of a hermetic vessel(21) to support an upper end of a rotary axis(25) to suppress axial vibration. The upper part supportive frame comprises a body part; and fixed parts. The body part has an axis supportive hole formed on a center thereof for the upper end of the rotary axis is inserted to. The fixed parts are formed on an outside of the body part at intervals of 120 deg. and fixed to an inner circumferential surface of the hermetic vessel. The rotary axis rotates with the upper end thereof inserted into the axis supportive hole of the upper part supportive frame to suppress axial vibration due to difference between a center of gyration and a center of mass of the rotary axis.

Description

로타리 압축기의 축진동 저감구조{SHAFT VIBRATION REDUCE STRUCTURE FOR ROTARY COMPRESSOR}SHAFT VIBRATION REDUCE STRUCTURE FOR ROTARY COMPRESSOR}

본 발명은 로타리 압축기의 축진동 저감구조에 관한 것으로, 특히 회전축의 상단부를 지지하여 압축기의 운전시 발생되는 진동을 감소시키도록 하는데 적합한 로타리 압축기의 축진동 저감구조에 관한 것이다.The present invention relates to an axial vibration reduction structure of a rotary compressor, and more particularly, to an axial vibration reduction structure of a rotary compressor suitable for supporting an upper end portion of a rotary shaft to reduce vibration generated during operation of the compressor.

종래 로타리 압축기가 도 1에 도시되어 있는 바, 이를 간단히 설명하면 다음과 같다.Conventional rotary compressor is shown in Figure 1, briefly described as follows.

도시된 바와 같이, 밀폐 용기(1)의 내부 하측에 실린더(2)가 고정되어 있고, 그 실린더(2)의 상,하부에는 압축실(3)이 형성되도록 상,하부 베어링(4)(4')이 볼트(5)로 고정되어 있다.As shown, the upper and lower bearings 4 and 4 so that the cylinder 2 is fixed to the inner lower side of the sealed container 1 and the compression chamber 3 is formed on the upper and lower portions of the cylinder 2. ') Is fixed with the bolt (5).

그리고, 상기 압축공간(3)에 편심부(6a)가 위치되도록 회전축(6)이 수직방향으로 회전가능하게 설치되어 있고, 그 회전축(6)의 상단부는 회전자(7)와 고정자(8)로 구성된 전동기(9)의 회전자(7)에 압입되어 있다.The rotary shaft 6 is rotatably installed in the vertical direction so that the eccentric portion 6a is positioned in the compression space 3, and the upper end of the rotary shaft 6 has the rotor 7 and the stator 8. It is press-fit into the rotor 7 of the electric motor 9 comprised.

또한, 상기 실린더(2)의 일측에는 압축실(3)에 연통되도록 흡입관(10)을 통하여 어큐믈레이터(11)가 연결되어 있고, 밀폐 용기(1)의 상단부에는 압축냉매를 토출시키기 위한 토출관(12)이 설치되어 있다.In addition, the accumulator 11 is connected to one side of the cylinder 2 via a suction pipe 10 so as to communicate with the compression chamber 3, and the upper end of the sealed container 1 is discharged to discharge the compressed refrigerant. The pipe 12 is provided.

도면중 미설명 부호 13은 롤링 피스톤이고, 14는 소음기이며, 15는 발란스 웨이트이다.In the figure, reference numeral 13 denotes a rolling piston, 14 denotes a silencer, and 15 denotes a balance weight.

상기와 같이 구성되어 있는 종래 로타리 압축기는 전원이 인가되는회전자(7)가 회전을 하며 회전축(6)을 회전시키게 되는데, 이때 어큐믈레이터(11)에서 액냉매 및 오일이 분리된 냉매가스가 흡입관(10)을 통하여 압축실(3)로 유입이 되고, 그와 같이 유입된 냉매가스는 회전축(6)의 편심부(6a)가 회전을 하며 압축이 되어 토출밸브(미도시)를 통하여 압축실(3)의 외부로 토출이된다.In the conventional rotary compressor configured as described above, the rotor 7 to which power is applied rotates and rotates the rotation shaft 6, wherein the refrigerant gas in which the liquid refrigerant and the oil are separated from the accumulator 11 is rotated. The suction gas is introduced into the compression chamber 3 through the suction pipe 10, and the refrigerant gas thus introduced is compressed while the eccentric portion 6a of the rotating shaft 6 is rotated to be compressed and compressed through a discharge valve (not shown). The discharge is made to the outside of the chamber 3.

그리고, 상기와 같이 토출된 냉매가스는 전동기(9)의 외측에 형성된 틈을 통하여 밀폐용기(1)의 상측으로 흘러서 토출관(12)을 통하여 토출되어진다.The refrigerant gas discharged as described above flows to the upper side of the sealed container 1 through a gap formed outside the electric motor 9 and is discharged through the discharge tube 12.

그러나, 상기와 같이 구성되어 있는 종래의 로타리 압축기는 회전축(6)의 회전중심과 무게중심이 일치하지 않기 때문에 진동이 발생되고, 그와 같이 발생되는 진동을 감소시키기 위하여 회전자(7)에 발란스 웨이트(15)를 설치하여 어느정도 감소시킬 수는 있으나, 압축기의 저속운전시 축계의 관성력에 비해 압축력에 의한 편심력이 커서 발생하는 토셔널(TORSIONAL)진동까지 완전히 감소시키지는 못하여, 압축기의 저속운전시에는 여전히 진동이 발생되는 문제점이 있었다.However, in the conventional rotary compressor configured as described above, since the rotational center and the center of gravity of the rotary shaft 6 do not coincide with each other, vibration is generated, and the balance of the rotor 7 is reduced in order to reduce the vibration generated. Although the weight 15 can be reduced to some extent, the eccentric force due to the compressive force is larger than the inertial force of the shaft during low speed operation of the compressor. There was still a problem that the vibration occurs.

상기와 같은 문제점을 감안하여 안출한 본 발명의 목적은 압축기의 저속운전시에 발생되는 진동까지도 완전히 감소시켜서 제품의 신뢰성을 향상시키도록 하는데 적합한 로타리 압축기의 축진동 저감구조를 제공함에 있다.An object of the present invention devised in view of the above problems is to provide an axial vibration reduction structure of a rotary compressor suitable for completely reducing even the vibration generated during low speed operation of the compressor to improve the reliability of the product.

도 1은 종래 로타리 압축기의 구조를 보인 종단면도.1 is a longitudinal sectional view showing a structure of a conventional rotary compressor.

도 2는 본 발명 축진동 저감구조를 갖는 로타리 압축기의 구조를 보인 종단면도.Figure 2 is a longitudinal sectional view showing the structure of a rotary compressor having a axial vibration reduction structure of the present invention.

도 3은 본 발명의 요부구성인 상부지지 프레임의 구조를 보인 평면도.Figure 3 is a plan view showing the structure of the upper support frame which is a main component of the present invention.

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

21 : 밀폐 용기 22 : 실린더21: sealed container 22: cylinder

23 : 압축실 24,24' : 압축실23: compression chamber 24,24 ': compression chamber

25 : 회전축 25a : 편심부25: shaft 25a: eccentric portion

26 : 회전자 27 : 고정자26: rotor 27: stator

28 : 전동기 40 : 상부지지 프레임28: motor 40: upper support frame

40a : 축지지공 41 : 몸체부40a: shaft support hole 41: body portion

42 : 고정부42: fixed part

상기와 같은 본 발명의 목적을 달성하기 위하여 밀폐 용기의 내부에 회전자와 고정자로 구성된 전동기가 설치되어 있고, 그 회전자에는 수직방향으로 회전축이 압입되어 있으며, 그 회전축의 하단부에 형성된 편심부는 실린더와 상,하부 베어링에 의하여 형성된 압축실의 내측에 위치되어 회전하며 압축실로 유입되는 냉매가스를 압축할 수 있도록 되어 있는 로타리 압축기에 있어서, 상기 밀폐 용기의 내측 상부에 회전축의 상단부를 지지하여 축진동을 억제하기 위한 상부지지 프레임을 설치하여서 구성되는 것을 특징으로 하는 로타리 압축기의 축진동 저감구조가 제공된다.In order to achieve the object of the present invention as described above, an electric motor composed of a rotor and a stator is installed inside the sealed container, and the rotor is press-fitted with a rotating shaft in a vertical direction, and an eccentric portion formed at the lower end of the rotating shaft is a cylinder. And a rotary compressor positioned inside the compression chamber formed by the upper and lower bearings, and configured to compress refrigerant gas flowing into the compression chamber, wherein the rotary shaft is supported by supporting the upper end of the rotating shaft in the upper part of the sealed container. An axial vibration reduction structure of a rotary compressor is provided, which is constituted by providing an upper support frame for suppressing.

이하, 상기와 같이 구성되는 본 발명 로타리 압축기의 축진동 저감구조를 첨부된 도면의 실시예를 참고하여 보다 상세히 설명하면 다음과 같다.Hereinafter, with reference to the embodiment of the accompanying drawings the axial vibration reduction structure of the rotary compressor of the present invention configured as described above in detail as follows.

도 2는 본 발명 축진동 저감구조를 갖는 로타리 압축기의 구조를 보인 종단면도이고, 도 3은 본 발명의 요부구성인 상부지지 프레임의 구조를 보인 평면도로서, 도시된 바와 같이, 본 발명의 축진동 저감구조를 갖는 로타리 압축기는 밀폐 용기(21)의 내측 하부에 실린더(22)가 고정되어 있고, 그 실린더(22)의 상,하측에는 압축실(23)이 형성되도록 상,하부 베어링(24)(24')이 고정되어 있으며, 그 압축실(23)의 내측에는 편심부(25a)가 위치되도록 수직방향으로 회전축(25)이 회전가능하게 배치되어 있다.Figure 2 is a longitudinal sectional view showing a structure of a rotary compressor having an axial vibration reduction structure of the present invention, Figure 3 is a plan view showing the structure of the upper support frame which is a main component of the present invention, as shown, the axial vibration reduction structure of the present invention The rotary compressor having a cylinder 22 is fixed to the inner lower portion of the sealed container 21, the upper and lower bearings 24 and 24 so that the compression chamber 23 is formed on the upper and lower sides of the cylinder 22. ') Is fixed, and the rotation shaft 25 is rotatably arranged in the vertical direction so that the eccentric portion 25a is positioned inside the compression chamber 23.

그리고, 상기 회전축(25)은 실린더(22) 상부의 회전자(26)와 고정자(27)로 구성되는 전동기(28)의 회전자(26)에 압입되어 있고, 실린더(22)의 측면에는 압축실(23)에 연통되도록 흡입관(29)이 설치되어 있으며, 그 흡입관(29)에는 액냉매와 오일을 분리하기 위한 어큐믈레이터(30)가 연결되어 있다.The rotating shaft 25 is press-fitted into the rotor 26 of the electric motor 28 composed of the rotor 26 and the stator 27 on the upper portion of the cylinder 22, and is compressed on the side surface of the cylinder 22. A suction pipe 29 is provided so as to communicate with the chamber 23, and the suction pipe 29 is connected with an accumulator 30 for separating liquid refrigerant and oil.

여기서, 상기 회전자(26)의 상부로 돌출된 회전축(25)의 상단부는 회전시 축진동을 억제할 수 있도록 상부지지 프레임(40)에 의하여 지지되어 있다.Here, the upper end of the rotating shaft 25 protruding to the upper portion of the rotor 26 is supported by the upper support frame 40 so as to suppress the axial vibration during rotation.

상기 상부지지 프레임(40)은 도 3에 도시된 바와 같이, 중앙에 회전축(25)의 상단부가 삽입되도록 축지지공(40a)이 형성된 몸체부(41)와, 그 몸체부(41)의 외측에 120°간격으로 형성되어 밀폐 용기(21)의 내주면에 고정되는 고정부(42)로 구성되어 있다.As shown in FIG. 3, the upper support frame 40 includes a body portion 41 having a shaft support hole 40a formed therein so that an upper end portion of the rotation shaft 25 is inserted in the center thereof, and an outer side of the body portion 41. It is comprised by the fixing | fixed part 42 formed at 120 degree space | interval, and fixed to the inner peripheral surface of the airtight container 21.

도면중 미설명 부호 31은 롤링 피스톤이고, 32는 토출관이다.In the figure, reference numeral 31 denotes a rolling piston, and 32 denotes a discharge tube.

상기와 같이 구성되는 본 발명의 축진동 저감구조를 갖는 로타리 압축기는 전원이 인가되면 회전자(26)가 회전을 하고, 그 회전자(26)에 압입된 회전축(25)이 회전을 하며, 그 회전하는 회전축(25)의 편심부(25a)가 압축실(23) 내에서 회전을 하게 된다.In the rotary compressor having the axial vibration reducing structure of the present invention configured as described above, when the power is applied, the rotor 26 rotates, and the rotary shaft 25 press-fitted to the rotor 26 rotates, and the rotation thereof. The eccentric portion 25a of the rotating shaft 25 rotates in the compression chamber 23.

그리고, 상기 어큐믈레이터(30)와 흡입관(29)를 통하여 압축실(23)로 유입된 냉매가스는 압축실(23)에서 회전하는 편심부(25a)에 의해서 압축이 되어 압축실(23)의 외부로 토출이되고, 그와 같이 토출된 압축냉매는 토출관(32)을 통하여 압축기의 외부로 토출되어 진다.In addition, the refrigerant gas introduced into the compression chamber 23 through the accumulator 30 and the suction pipe 29 is compressed by an eccentric portion 25a that rotates in the compression chamber 23 to compress the compression chamber 23. Is discharged to the outside of the compressor, and the compressed refrigerant thus discharged is discharged to the outside of the compressor through the discharge pipe (32).

상기와 같이 압축기의 내부로 유입된 냉매가스를 압축하기 위하여 회전하는 회전축(25)은 상단부가 상부지지 프레임(40)의 축지지공(40a)에 삽입된 상태로 회전하기 때문에 회전축(25)의 회전중심과 무게중심의 차이에 의해서 발생되는 진동의 발생이 억제된다.As described above, the rotary shaft 25 that rotates to compress the refrigerant gas introduced into the compressor rotates while the upper end rotates while being inserted into the shaft support hole 40a of the upper support frame 40. The generation of vibration caused by the difference between the center and the center of gravity is suppressed.

이상에서 상세히 설명한 바와 같이, 본 발명 로타리 압축기의 축진동 저감구조는 밀폐 용기의 내측 상부에 상부지지 프레임을 설치하여, 회전축의 상단부가 상부지지 프레임의 축지지공에 삽입된 상태에서 회전되도록 함으로써, 회전축의 회전중심과 무게중심의 차이에 의하여 발생되는 축진동을 억제하게 되어 압축기의 진동소음을 감소시키는 효과가 있다.As described in detail above, the axial vibration reduction structure of the rotary compressor of the present invention is installed by the upper support frame on the inner top of the sealed container, so that the upper end of the rotary shaft is rotated in the state inserted into the axial support hole of the upper support frame, The vibration caused by the difference between the center of rotation and the center of gravity is suppressed, thereby reducing the vibration noise of the compressor.

Claims (2)

밀폐 용기의 내부에 회전자와 고정자로 구성된 전동기가 설치되어 있고, 그 회전자에는 수직방향으로 회전축이 압입되어 있으며, 그 회전축의 하단부에 형성된 편심부는 실린더와 상,하부 베어링에 의하여 형성된 압축실의 내측에 위치되어 회전하며 압축실로 유입되는 냉매가스를 압축할 수 있도록 되어 있는 로타리 압축기에 있어서, 상기 밀폐 용기의 내측 상부에 회전축의 상단부를 지지하여 축진동을 억제하기 위한 상부지지 프레임을 설치하여서 구성되는 것을 특징으로 하는 로타리 압축기의 축진동 저감구조.An electric motor composed of a rotor and a stator is installed inside the sealed container, and the rotor is press-fitted with a rotating shaft in a vertical direction, and an eccentric portion formed at the lower end of the rotating shaft is formed of a compression chamber formed by a cylinder and upper and lower bearings. A rotary compressor positioned inside to rotate and compress refrigerant gas flowing into a compression chamber, the rotary compressor supporting an upper end of a rotating shaft to provide an upper support frame for suppressing axial vibration. Axial vibration reduction structure of the rotary compressor, characterized in that. 제 1항에 있어서, 상기 상부지지 프레임은 중앙에 회전축의 상단부가 삽입되도록 축지지공이 형성된 몸체부와, 그 몸체부의 외측에 120°간격으로 형성되어 밀폐 용기의 내주면에 고정되는 고정부로 구성되는 것을 특징으로 하는 로타리 압축기의 축진동 저감구조.According to claim 1, wherein the upper support frame is composed of a body portion having a shaft support hole is formed so that the upper end of the rotating shaft in the center, and the fixing portion which is formed on the outside of the body portion at 120 ° intervals fixed to the inner peripheral surface of the sealed container Axial vibration reduction structure of the rotary compressor, characterized in that.
KR1020000061856A 2000-10-20 2000-10-20 Shaft vibration reduce structure for rotary compressor KR20020031622A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100459450B1 (en) * 2002-04-22 2004-12-03 엘지전자 주식회사 Crankshift support device for rotary comrressor
KR100640229B1 (en) * 2000-12-07 2006-10-31 주식회사 엘지이아이 A hermetic compressor
KR101034530B1 (en) * 2007-10-23 2011-05-27 민병이 Maintenance water and sewage pipe
WO2019007110A1 (en) * 2017-07-07 2019-01-10 上海海立电器有限公司 Rotor-type compressor

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Publication number Priority date Publication date Assignee Title
JPS6131683A (en) * 1984-07-24 1986-02-14 Toshiba Corp Compressor
JPH03194186A (en) * 1989-12-20 1991-08-23 Fujitsu General Ltd Rotary compressor
KR930006946Y1 (en) * 1991-02-28 1993-10-09 금성계전 주식회사 Free voltage circuit
KR19990016602U (en) * 1997-10-29 1999-05-25 전주범 Vibration Reduction Device for Hermetic Rotary Compressor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6131683A (en) * 1984-07-24 1986-02-14 Toshiba Corp Compressor
JPH03194186A (en) * 1989-12-20 1991-08-23 Fujitsu General Ltd Rotary compressor
KR930006946Y1 (en) * 1991-02-28 1993-10-09 금성계전 주식회사 Free voltage circuit
KR19990016602U (en) * 1997-10-29 1999-05-25 전주범 Vibration Reduction Device for Hermetic Rotary Compressor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100640229B1 (en) * 2000-12-07 2006-10-31 주식회사 엘지이아이 A hermetic compressor
KR100459450B1 (en) * 2002-04-22 2004-12-03 엘지전자 주식회사 Crankshift support device for rotary comrressor
KR101034530B1 (en) * 2007-10-23 2011-05-27 민병이 Maintenance water and sewage pipe
WO2019007110A1 (en) * 2017-07-07 2019-01-10 上海海立电器有限公司 Rotor-type compressor

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