KR20000046830A - Apparatus for preventing thermal deformation of cylinder of hermetic rotary compressor - Google Patents

Apparatus for preventing thermal deformation of cylinder of hermetic rotary compressor Download PDF

Info

Publication number
KR20000046830A
KR20000046830A KR1019980063557A KR19980063557A KR20000046830A KR 20000046830 A KR20000046830 A KR 20000046830A KR 1019980063557 A KR1019980063557 A KR 1019980063557A KR 19980063557 A KR19980063557 A KR 19980063557A KR 20000046830 A KR20000046830 A KR 20000046830A
Authority
KR
South Korea
Prior art keywords
cylinder
rotary compressor
deformation
hermetic rotary
inner diameter
Prior art date
Application number
KR1019980063557A
Other languages
Korean (ko)
Inventor
박기원
Original Assignee
구자홍
엘지전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 구자홍, 엘지전자 주식회사 filed Critical 구자홍
Priority to KR1019980063557A priority Critical patent/KR20000046830A/en
Publication of KR20000046830A publication Critical patent/KR20000046830A/en

Links

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
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/20—Manufacture essentially without removing material
    • F04C2230/23—Manufacture essentially without removing material by permanently joining parts together
    • F04C2230/231—Manufacture essentially without removing material by permanently joining parts together by welding

Landscapes

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

Abstract

PURPOSE: An apparatus for preventing thermal deformation of a cylinder of a hermetic rotary compressor is provided to prevent deformation of an inner diameter of a cylinder when welding the cylinder to the rotary compressor and abrasion of a rolling piston by fixing an element for preventing deformation is fixed in the cylinder. CONSTITUTION: An apparatus for preventing thermal deformation of a cylinder of a hermetic rotary compressor includes an element for preventing deformation(3) inserted in the cylinder(2) for minimizing deformation of an inner diameter of the cylinder due to the heat applied to the cylinder when welding the cylinder to a compression space of a sealed container(1), wherein the element for preventing deformation is made of a material of which stiffness is larger than the cylinder.

Description

밀폐형 회전식 압축기의 실린더 열변형 방지장치Cylinder Heat Deflection Prevention System of Hermetic Rotary Compressor

본 발명은 밀폐형 회전식 압축기의 실린더 열변형 방지장치에 관한 것으로서, 더욱 상세하게는 밀폐형 회전식 압축기의 밀폐 용기에 3점 용접시 압축 기구부의 실린더 내경에 열변형이 발생되는 현상을 최소화할 수 있도록 한 것이다.The present invention relates to a cylinder heat deformation preventing device of a hermetic rotary compressor, and more particularly, to minimize the phenomenon that heat deformation occurs in the cylinder bore of the compression mechanism part when three-point welding to the hermetically sealed container of the hermetic rotary compressor. .

일반적으로, 종래의 밀폐형 회전식 압축기는 도 1 및 도 2에 도시한 바와 같이, 소정의 내부 체적을 갖는 밀폐 용기(1)의 내부에 고정자(5)와 회전자(6) 등으로 구성되는 전동 기구부가 설치되어 있으며, 상기 회전자(6)의 내경에 압입되며 하부에 편심부(7)가 형성된 회전축(8)과, 상기 회전축(8)의 편심부(7)가 삽입되는 원통형의 압축 공간(P)이 형성되어 상기 편심부(7)를 감싸며 회전축(8)에 삽입되는 메인 베어링(9) 및 서브 베어링(10)과 함께 볼트(11)에 의해 결합되는 실린더(2a)와, 상기 회전축(8)의 편심부(7)에 삽입됨과 더불어 실린더(2a)의 압축 공간(P) 내주면을 접하면서 자전 및 공전하는 롤링 피스톤(4)과, 상기 실린더(2a)의 일측에 직선운동가능하게 삽입되어 롤링 피스톤(4)의 외주면과 슬라이딩 접촉되면서 실린더(2a)의 압축 공간(P)을 흡입실(12)과 압축실(13)로 분리하는 베인(14)을 포함하여 구성되는 압축 기구부가 설치된다.In general, a conventional hermetic rotary compressor is a power mechanism composed of a stator 5, a rotor 6, and the like inside a hermetically sealed container 1 having a predetermined internal volume, as shown in Figs. And a cylindrical compression space in which a rotary shaft 8 is press-fitted into the inner diameter of the rotor 6 and an eccentric portion 7 is formed at the lower portion and an eccentric portion 7 of the rotary shaft 8 is inserted ( P is formed to surround the eccentric (7) and the cylinder (2a) coupled by the bolt 11 together with the main bearing (9) and the sub-bearing (10) inserted into the rotary shaft (8), and the rotary shaft ( The rolling piston 4 is inserted into the eccentric portion 7 of the cylinder 8 and rotates and rotates while contacting the inner circumferential surface of the compression space P of the cylinder 2a, and is linearly inserted into one side of the cylinder 2a. And the sliding space P of the cylinder 2a is brought into sliding contact with the outer circumferential surface of the rolling piston 4 and the suction chamber 12 and the compression chamber. The compression mechanism part comprised including the vane 14 separated by 13 is provided.

또한, 상기 베인(14)에 의해 압축실을 이루는 실린더(2a)의 일측에는 압축된 냉매 가스를 토출시키는 토출 포트(15)가 형성되고, 상기 메인 베어링(9)의 일측에는 상기 토출 포트(15)와 연통되는 토출공(16)이 형성되며, 상기 메인 베어링(9)의 상부에는 작동시 발생하는 토출 맥동음을 저감시키기 위한 흡입 머플러(17)가 결합된다.In addition, a discharge port 15 for discharging the compressed refrigerant gas is formed at one side of the cylinder 2a constituting the compression chamber by the vane 14, and the discharge port 15 is provided at one side of the main bearing 9. The discharge hole 16 is formed in communication with, and the suction muffler 17 for reducing the discharge pulsation sound generated during operation is coupled to the upper portion of the main bearing (9).

또한, 상기 실린더(2a)의 흡입실(12)에는 냉매 가스가 실린더(2a)의 내부로 유입되는 흡입구(18)가 형성되고, 상기 흡입구(18)는 밀폐 용기(1)의 측부에 설치되는 어큐뮬레이터(19) 및 냉매 유입관(20)에 의해 연결된다.In addition, a suction port 18 through which refrigerant gas flows into the cylinder 2a is formed in the suction chamber 12 of the cylinder 2a, and the suction port 18 is provided at the side of the sealed container 1. It is connected by the accumulator 19 and the refrigerant inlet pipe 20.

그리고, 상기 토출 포트(15)의 측부에 위치하도록 실린더(2a)의 일측에는 소정의 두께와 면적을 갖도록 형성된 베인(14)이 삽입되고, 상기 베인(14)은 스프링(21)에 의해 탄성적으로 지지되어 베인(14)의 일측 단부가 롤링 피스톤(4)에 접촉된 상태로 설치되며, 상기 밀폐 용기(1)내의 바닥면에는 슬라이딩이 일어나는 부품에 공급되는 오일이 채워져 있으며, 상기 밀폐 용기(1)의 상부에는 밀폐 용기(1) 내부에서 압축된 냉매 가스가 외부로 토출되는 토출관(22)이 설치되어 구성된다.In addition, a vane 14 having a predetermined thickness and an area is inserted into one side of the cylinder 2a so as to be positioned at the side of the discharge port 15, and the vane 14 is elastic by a spring 21. It is supported by the one end of the vane 14 is installed in contact with the rolling piston (4), the bottom surface of the sealed container (1) is filled with the oil supplied to the sliding element, the closed container ( The upper part of 1) is provided with a discharge tube 22 for discharging the refrigerant gas compressed in the sealed container 1 to the outside.

따라서, 밀폐형 회전식 압축기가 인가되는 전류에 의해 회전자(6)가 회전하면서 회전축(8)을 회전시키게 되면, 회전축(8)의 회전에 의해 회전축(8)의 편심부(7)에 결합되어 있는 롤링 피스톤(4)이 베인(14)과 접촉된 상태에서 실린더(2a)의 압축 공간(P)에서 편심 회전하게 되고, 상기 롤링 피스톤(4)의 편심 회전에 의해 실린더(2a)에 형성된 압축 공간(P)의 체적 변화로 저온 및 저압의 냉매 가스가 어큐뮬레이터(19)에 연통 설치된 냉매 유입관(20)과 흡입구(18)를 통해 실린더(2a)의 내부로 흡입되어 고온 및 고압의 상태로 압축된다.Therefore, when the rotating shaft 8 is rotated while the rotor 6 rotates by the current applied by the hermetic rotary compressor, the rotary shaft 8 is coupled to the eccentric portion 7 of the rotating shaft 8 by the rotation of the rotating shaft 8. The rolling piston 4 is eccentrically rotated in the compression space P of the cylinder 2a while the rolling piston 4 is in contact with the vane 14, and the compression space formed in the cylinder 2a by the eccentric rotation of the rolling piston 4 Due to the volume change of (P), the low-temperature and low-pressure refrigerant gas is sucked into the cylinder 2a through the refrigerant inlet pipe 20 and the suction port 18 provided in communication with the accumulator 19 and compressed to a state of high temperature and high pressure. do.

이와 동시에, 압축된 고온 및 고압의 냉매 가스는 실린더(2a)의 토출 포트(15)와 메인 베어링(9)의 토출공(16) 및 흡입 머플러를 통해 실린더(2a)의 외부로 토출되어 고정자(5)와 회전자(6) 사이를 통해서 밀폐 용기(1)내의 상부로 이동하여 토출관(22)을 통해 밀폐 용기(1)의 외부로 토출시키는 사이클을 반복하게 된다.At the same time, the compressed high-temperature and high-pressure refrigerant gas is discharged to the outside of the cylinder 2a through the discharge port 15 of the cylinder 2a, the discharge hole 16 of the main bearing 9, and the suction muffler, thereby stator ( 5) and the rotor 6 is moved to the upper portion in the sealed container 1 to be discharged to the outside of the sealed container 1 through the discharge pipe 22 is repeated.

그러나, 이와 같은 종래 밀폐형 회전식 압축기의 밀폐 용기(1)에 3점 용접을 가하면, 이 용접열이 실린더(2a)에 그대로 전달되기 때문에 실린더(2a)의 내경, 즉 압축 공간(P)의 내부에 변형이 발생하게 되고, 이같은 변형은 롤링 피스톤(4)의 이상 마모 및 냉력의 저하를 초래하게 되며, 또한 소음 발생이 커지게 되는 등의 많은 문제점이 있었다.However, when three-point welding is applied to the hermetically sealed container 1 of such a conventional hermetic rotary compressor, since the welding heat is transmitted to the cylinder 2a as it is, the inner diameter of the cylinder 2a, i.e., inside the compression space P, is applied. Deformation occurs, and such deformation causes a lot of problems such as abnormal wear of the rolling piston 4 and a decrease in cooling power, and further, noise generation.

따라서, 본 발명은 상기한 제반 문제점을 해결하기 위한 것으로서, 밀폐형 회전식 압축기의 밀폐 용기에 3점 용접시 압축 기구부의 실린더 내경에 열변형이 발생되는 현상을 최소화할 수 있도록 하여 롤링 피스톤의 이상 마모와 냉력의 저하를 방지할 수 있을 뿐만 아니라, 소음 발생을 저감시킬 수 있는 밀폐형 회전식 압축기의 실린더 열변형 방지장치를 제공하는 데 그 목적이 있다.Accordingly, the present invention is to solve the above problems, to minimize the phenomenon that the thermal deformation occurs in the inner diameter of the cylinder of the compression mechanism when the three-point welding to the sealed container of the hermetic rotary compressor and the abnormal wear of the rolling piston and It is an object of the present invention to provide a cylinder heat deformation preventing device of a hermetic rotary compressor that can prevent a decrease in cooling power and reduce noise.

도 1은 종래의 밀폐형 회전식 압축기를 나타낸 종단면도1 is a longitudinal sectional view showing a conventional hermetic rotary compressor.

도 2는 도 1의 횡단면도2 is a cross-sectional view of FIG. 1

도 3은 본 발명을 나타낸 횡단면도Figure 3 is a cross-sectional view showing the present invention

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

1; 밀폐 용기 2; 실린더One; Closed container 2; cylinder

3; 변형 방지부재 P; 압축 공간3; Deformation preventing member P; Compression space

상기한 목적을 달성하기 위해 본 발명은 밀폐 용기의 내부에 설치되는 실린더의 내경에 밀폐 용기에 실린더를 고정시 용접에 의한 열에 의해 실린더의 내경 변형을 최소화하기 위하여 변형 방지부재가 압입되어 고정된 것을 특징으로 하는 밀폐형 회전식 압축기의 실린더 열변형 방지장치가 제공되므로써 달성된다.In order to achieve the above object, the present invention is that the deformation preventing member is press-fitted and fixed in order to minimize the inner diameter deformation of the cylinder by heat by welding when fixing the cylinder in the closed container to the inner diameter of the cylinder installed inside the closed container. This is achieved by providing a cylinder heat deformation preventing device of a hermetic rotary compressor.

상기 변형 방지부재는 실린더 보다 강한 재질로 제작된 것을 그 특징으로 한다.The deformation preventing member is characterized in that made of a stronger material than the cylinder.

이하, 상기한 목적을 달성하기 위한 본 발명의 바람직한 실시예를 첨부 도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention for achieving the above object will be described in detail.

도 3은 본 발명을 나타낸 횡단면도로서, 종래의 기술과 동일한 부분에 대해서는 동일 부호를 부여하여 본 발명을 설명한다.3 is a cross-sectional view showing the present invention, in which the same parts as in the prior art are denoted by the same reference numerals to describe the present invention.

본 발명은 밀폐형 회전식 압축기의 밀폐 용기(1) 내부에 설치되는 실린더(2)의 내경, 즉 압축 공간(P)에 상기 밀폐 용기(1)에 실린더(2)를 고정시 용접에 의한 열에 의해 실린더(2)의 내경 변형을 최소화하기 위하여 실린더(2) 보다 강한 재질로 된 변형 방지부재(3)가 압입되어 고정되도록 구성된다.The present invention relates to an inner diameter of a cylinder (2) installed inside a sealed container (1) of a sealed rotary compressor, that is, a cylinder by heat by welding when fixing the cylinder (2) to the closed container (1) in a compression space (P). In order to minimize the inner diameter deformation of (2), the deformation preventing member 3 made of a material stronger than the cylinder 2 is press-fitted and fixed.

상기와 같이 구성된 본 발명은 도 3에 도시한 바와 같이, 밀폐형 회전식 압축기의 밀폐 용기(1) 내부에 설치되는 압축 기구부의 실린더(2) 내경인 압축 공간(P)에 실린더(2) 보다 강한 재질로 된 변형 방지부재(3)가 압입된 상태로 고정되어 있으므로 상기 밀폐 용기(1)에 실린더(2)를 고정시키기 위한 3점 용접을 할 때 실린더(2)의 내경에 압입, 고정되어 실린더(2) 보다 강한 재질로 된 변형 방지부재(3)로 인해 실린더(2)의 내경이 용접시 발생하는 열에 의해 변형되는 현상을 최소화할 수 있게 된다.As shown in FIG. 3, the present invention configured as described above has a material stronger than that of the cylinder 2 in the compression space P, the inner diameter of the cylinder 2 of the compression mechanism part installed inside the sealed container 1 of the hermetic rotary compressor. Since the deformation preventing member 3 is fixed in the press-fitted state, when the three-point welding for fixing the cylinder 2 to the closed container 1 is carried out, it is press-fitted and fixed to the inner diameter of the cylinder 2 and the cylinder ( 2) Due to the deformation preventing member 3 made of a stronger material, the phenomenon in which the inner diameter of the cylinder 2 is deformed by heat generated during welding can be minimized.

따라서, 밀폐형 회전식 압축기의 동작시 롤링 피스톤(4)의 이상 마모가 발생되는 것을 방지할 수 있고, 롤링 피스톤(4)의 이상 마모에 의한 냉력의 저하를 방지할 수 있으며, 소음 발생을 효과적으로 저감시킬 수 있게 된다.Therefore, it is possible to prevent abnormal wear of the rolling piston 4 during operation of the hermetic rotary compressor, to prevent a decrease in cooling force due to abnormal wear of the rolling piston 4, and to effectively reduce noise generation. It becomes possible.

한편, 종래 실린더(2a)의 내경을 가공할 때에는 연삭하였지만, 본 발명에 따른 실린더(2)는 가공할 때 선삭하고, 변형 방지부재(3)의 외경과 내경은 연삭하므로써 제작시의 가공성을 향상시킬 수 있게 된다.On the other hand, while grinding the inner diameter of the cylinder (2a) in the prior art, the cylinder (2) according to the present invention is ground when processing, and the outer diameter and the inner diameter of the deformation preventing member (3) is improved by grinding the workability at the time of manufacturing You can do it.

이상에서 상술한 바와 같이, 본 발명은 밀폐형 회전식 압축기의 밀폐 용기에 3점 용접시 압축 기구부의 실린더 내경에 열변형이 발생되는 현상을 최소화하기 위해 변형 방지부재가 압입, 고정되므로써 롤링 피스톤의 이상 마모와 냉력의 저하를 방지할 수 있으며, 소음 발생을 저감시킬 수 있으므로 인해 기기의 효율성 및 신뢰성을 대폭 향상시킨 매우 유용한 발명이다.As described above, in the present invention, in order to minimize the phenomenon that thermal deformation occurs in the cylinder inner diameter of the compression mechanism part when welding to the sealed container of the hermetic rotary compressor, the deformation preventing member is press-fitted and fixed, thereby causing abnormal wear of the rolling piston. It is a very useful invention that can greatly reduce the efficiency and reliability of the device because it can prevent the reduction of the cooling power and noise generation.

이상에서는 본 발명의 바람직한 실시예를 도시하고 또한 설명하였으나, 본 발명은 상기한 실시예에 한정되지 않고, 이하 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술 분야에서 통상의 지식을 가진자라면 누구든지 다양한 변경 실시가 가능할 것이다.Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the above-described embodiments, and the present invention may be commonly used in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the following claims. Anyone with knowledge will be able to make various changes.

Claims (2)

밀폐 용기의 내부에 설치되는 실린더의 내경에 밀폐 용기에 실린더를 고정시 용접에 의한 열에 의해 실린더의 내경 변형을 최소화하기 위하여 변형 방지부재가 압입되어 고정된 것을 특징으로 하는 밀폐형 회전식 압축기의 실린더 열변형 방지장치.The cylinder heat deformation of the hermetic rotary compressor characterized in that the deformation preventing member is press-fitted and fixed to minimize the inner diameter deformation of the cylinder by heat by welding when fixing the cylinder to the inner container of the cylinder installed inside the closed container. Prevention device. 제 1 항에 있어서, 상기 변형 방지부재가 실린더 보다 강한 재질로 제작된 것을 특징으로 하는 밀폐형 회전식 압축기의 실린더 열변형 방지장치.The apparatus of claim 1, wherein the deformation preventing member is made of a material stronger than that of the cylinder.
KR1019980063557A 1998-12-31 1998-12-31 Apparatus for preventing thermal deformation of cylinder of hermetic rotary compressor KR20000046830A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019980063557A KR20000046830A (en) 1998-12-31 1998-12-31 Apparatus for preventing thermal deformation of cylinder of hermetic rotary compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019980063557A KR20000046830A (en) 1998-12-31 1998-12-31 Apparatus for preventing thermal deformation of cylinder of hermetic rotary compressor

Publications (1)

Publication Number Publication Date
KR20000046830A true KR20000046830A (en) 2000-07-25

Family

ID=19570127

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019980063557A KR20000046830A (en) 1998-12-31 1998-12-31 Apparatus for preventing thermal deformation of cylinder of hermetic rotary compressor

Country Status (1)

Country Link
KR (1) KR20000046830A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100360866B1 (en) * 2000-11-23 2002-11-13 주식회사 엘지이아이 Electric welding apparatus for hermetic compressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100360866B1 (en) * 2000-11-23 2002-11-13 주식회사 엘지이아이 Electric welding apparatus for hermetic compressor

Similar Documents

Publication Publication Date Title
KR20000046830A (en) Apparatus for preventing thermal deformation of cylinder of hermetic rotary compressor
KR100314030B1 (en) Suction device for sealed type rotary compressor
KR200148583Y1 (en) Device for preventing crank shaft abrasion of hermetic rotary compressor
KR100311382B1 (en) Cylinder support structure of hermetic rotary compressor
KR20010087908A (en) Bearing apparatus of rotary compressor
KR100365000B1 (en) Structure for engaging compressing unit in rotary compressor
KR20010064535A (en) Discharge noise reduction structure for sealed type rotary compressor
KR100873680B1 (en) Structure for preventing friction shift in hermetic type compressor
KR100286310B1 (en) Noise reduction structure of a rotary compressor
KR100518018B1 (en) Apparatus welding compression part for hermetic rotary compresser
KR100339578B1 (en) Suction noise reduction device for sealed type rotary compressor
KR100314029B1 (en) Accumulator and refrigerant suction pipe consolation structure for sealed type rotary compressor
KR20010056079A (en) Muffler attachment structure for sealed type rotary compressor
KR20000015213U (en) Discharge device of hermetic rotary compressor
KR20000074951A (en) Accumulator fixing structure for sealed type rotary compressor
KR20020030616A (en) Structure for engaging valve in rotary compressor
KR20000046857A (en) Apparatus for preventing thermal deformation of hermetic rotary type compressor
KR20010077208A (en) Discharge valve noise reduction structure for sealed type rotary compressor
KR20040044030A (en) Bearing eastablish structure of rotary compressor
KR20010018081A (en) Muffler noise reduction structure for sealed type rotary compressor
KR20000019831A (en) Hermetic rotary compressor
KR20010063936A (en) Structure for reducing noise hermetic rotary compressor
KR20000046828A (en) Structure for preventing introduction of liquid refrigerant of hermetic rotary type compressor
KR20040090344A (en) Apparatus welding compression part for hermetic rotary compresser
KR20000046827A (en) Structure for reducing noise of hermetic rotary type compressor

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application