KR0128917Y1 - A rotary compressor - Google Patents

A rotary compressor Download PDF

Info

Publication number
KR0128917Y1
KR0128917Y1 KR2019960028448U KR19960028448U KR0128917Y1 KR 0128917 Y1 KR0128917 Y1 KR 0128917Y1 KR 2019960028448 U KR2019960028448 U KR 2019960028448U KR 19960028448 U KR19960028448 U KR 19960028448U KR 0128917 Y1 KR0128917 Y1 KR 0128917Y1
Authority
KR
South Korea
Prior art keywords
eccentric portion
compressor
rotating shaft
rotary compressor
rotary
Prior art date
Application number
KR2019960028448U
Other languages
Korean (ko)
Other versions
KR19980015233U (en
Inventor
이계동
Original Assignee
김광호
삼성전자주식회사
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 김광호, 삼성전자주식회사 filed Critical 김광호
Priority to KR2019960028448U priority Critical patent/KR0128917Y1/en
Publication of KR19980015233U publication Critical patent/KR19980015233U/en
Application granted granted Critical
Publication of KR0128917Y1 publication Critical patent/KR0128917Y1/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
    • 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
    • F04C29/0035—Equalization of pressure pulses
    • 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
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/12—Vibration
    • 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

Landscapes

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

Abstract

본 고안은 회전압축기에 관한 것으로, 본 고안의 목적은 회전축과 편심부에 의해 무게중심이동을 최소화하여 진동에 의한 소음을 저감시키는 회전압축기를 제공하는데 있다.The present invention relates to a rotary compressor, an object of the present invention is to provide a rotary compressor to reduce the noise caused by vibration by minimizing the center of gravity movement by the rotary shaft and the eccentric portion.

본 고안에 따른 회전압축기에서 회전축(23)과 편심부(40)를 착탈가능하게 형성하고, 편심부(40)는 회전축(23)보다 밀도가 작은 가벼운 재질을 사용한다.In the rotary compressor according to the present invention, the rotating shaft 23 and the eccentric portion 40 are detachably formed, and the eccentric portion 40 uses a lighter material having a lower density than the rotating shaft 23.

따라서, 편심부(40)의 질량이 가벼워지므로 전체적인 압축기의 질량이 가벼워지며, 회전시에 편심부(40)에 의한 무게중심이동에 따른 진동을 저감시킬 수 있음과 함께 소음을 저감시키는 이점이 있다. 또한, 진동이 저감되므로 밸런서(24)의 크기도 소형으로 이루어질 수 있으며, 그로 인해 압축기의 제품비가 감소되고, 압축실의 용량을 변경할 때도 편심부(40)의 크기만 변경하면 되는 이점이 있다.Therefore, since the mass of the eccentric portion 40 becomes lighter, the mass of the entire compressor becomes lighter, and the vibration can be reduced by the movement of the center of gravity by the eccentric portion 40 during rotation, and there is an advantage of reducing noise. . In addition, since the vibration is reduced, the size of the balancer 24 can also be made compact, thereby reducing the product cost of the compressor, and there is an advantage in that only the size of the eccentric portion 40 needs to be changed even when changing the capacity of the compression chamber.

Description

회전압축기Rotary compressor

본 고안은 밀폐형 회전압축기에 관한 것으로서, 더욱 상세하게는 구동부의 동력을 전달하는 회전축의 구조를 개선하여 압축기의 진동을 저감시키는 회전압축기에 관한 것이다.The present invention relates to a hermetic rotary compressor, and more particularly to a rotary compressor for improving the structure of the rotary shaft for transmitting the power of the drive unit to reduce the vibration of the compressor.

일반적으로 압축기는 냉매를 매개체로 하여 압축, 응축, 팽창, 증발과정이 연속적으로 수행되는 냉동사이클에서 로터의 회전 운동 또는 피스톤의 왕복 운동 등에 의해서 냉매를 고온, 고압으로 압축하여 토출하는 기능을 한다.In general, a compressor functions to compress and discharge a refrigerant at high temperature and high pressure by a rotational motion of a rotor or a reciprocating motion of a piston in a refrigeration cycle in which compression, condensation, expansion, and evaporation processes are continuously performed using a refrigerant as a medium.

이러한 기능을 하는 압축기 가운데 회전압축기는 그 하부와 상부에 각각 냉매흡입관(10a)과 냉매토출관(10b)이 마련된 밀폐용기(10)가 마련되고, 이 밀폐용기(10)내에 구동부(20)와 압축부(30)가 배치되어 구성된다.Among the compressors having such a function, the rotary compressor is provided with a sealed container (10) provided with a refrigerant suction pipe (10a) and a refrigerant discharge pipe (10b) at a lower portion and an upper portion thereof, and the drive unit (20) and the inside of the sealed container (10). The compression unit 30 is arranged and configured.

우선, 구동부(20)는 밀폐용기(10)의 내주면에 설치된 고정자(21)와, 이 고정자(21)와 상호작용하여 회전하는 회전자(22), 그리고 회전자(22)의 회전운동을 전달받아 함께 회전하는 회전축(23)을 구비한다.First, the driving unit 20 transmits the stator 21 installed on the inner circumferential surface of the sealed container 10, the rotor 22 rotating in interaction with the stator 21, and the rotational movement of the rotor 22. It is provided with the rotating shaft 23 which rotates together.

이러한 구동부(20)의 하부에 마련되어 회전축(23)의 회전운동을 전달받아 유체를 압축하는 압축부(30)는 상하 양쪽이 개방된 실린더(31)와 실린더(31)의 상하양쪽을 폐쇄하여 실린더(31)의 내부에 압축실(32)을 형성함과 함께 회전축(23)을 지지하는 상부덮개(33a)와 하부덮개(33b)를 구비한다. 또한, 압축실(32)내에는 회전축(23)에 편심되게 일체로 마련된 편심부(34)와, 회전축(23)과 편심부(34)에 의하여 압축실(32)의 내면을 따라 편심회전운동 및 미끄럼운동하면서 유체를 압축하는 롤러(35)가 마련된다. 그리고, 구동부(20)와 압축부(30)사이의 회전축(23)에는 편심질량의 회전에 따른 불안전성을 방지하기 위하여 밸런서(24)가 설치된다.The compression unit 30 provided under the drive unit 20 to compress the fluid by receiving the rotational movement of the rotary shaft 23 closes the upper and lower sides of the cylinder 31 and the upper and lower sides of the cylinder 31 to close the cylinder. The upper cover 33a and the lower cover 33b which support the rotating shaft 23 and form the compression chamber 32 inside the 31 are provided. In addition, in the compression chamber 32, the eccentric portion 34 integrally provided eccentrically on the rotation shaft 23, and the eccentric rotational movement along the inner surface of the compression chamber 32 by the rotation shaft 23 and the eccentric portion 34. And a roller 35 for compressing the fluid while sliding. In addition, a balancer 24 is installed on the rotation shaft 23 between the driving unit 20 and the compression unit 30 to prevent instability due to rotation of the eccentric mass.

이와 같이 구성된 압축기는 냉매흡입관(10a)을 통해 유체가 실린더(31)의 내부에 형성된 압축실(32)로 유입되면 실린더(31)의 내주면을 따라 편심회전하는 롤러(35)에 의해 압축된다. 압축된 유체는 실린더(31) 밖으로 유출되고, 유출된 유체는 냉매토출관(10b)을 통해 외부로 배출된다.The compressor configured as described above is compressed by the roller 35 which eccentrically rotates along the inner circumferential surface of the cylinder 31 when the fluid flows into the compression chamber 32 formed inside the cylinder 31 through the refrigerant suction pipe 10a. The compressed fluid flows out of the cylinder 31, and the fluid flows out through the refrigerant discharge pipe 10b.

그러나, 이 가운데 회전축과 편심부는 일체로 마련되어 있으며, 특히, 이들은 Fe로 이루어진 주물제로, 밸런서가 있지만 구동시 회전축과 함께 회전하는 편심부에 의한 무게중심의 이동에 따라 진동이 발생하게 된다. 특히, 편심부가 Fe로 이루어져 유동함에 따라 무게중심 이동이 심하며, 재료비도 많이 들게 된느 문제가 발생한다.However, among these, the rotating shaft and the eccentric part are provided integrally, and in particular, they are made of Fe, and there is a balancer, but vibration is generated by the movement of the center of gravity by the eccentric part which rotates together with the rotating shaft during driving. In particular, as the eccentric portion is made of Fe flows in the center of gravity is severe, the material cost is also high.

본 고안의 목적은 회전축과 편심부에 의해 무게중심이동을 최소화하여 진동에 의한 소음을 저감시키는 회전압축기를 제공하는데 있다.An object of the present invention is to provide a rotary compressor that minimizes the movement of the center of gravity by the rotary shaft and the eccentric portion to reduce noise caused by vibration.

도 1은 일반적인 회전압축기의 내부구조를 보인 단면도이다.1 is a cross-sectional view showing the internal structure of a general rotary compressor.

도 2는 종래 회전압축기의 회전축을 발췌하여 보인 도면이다.2 is a view showing an extract of a rotating shaft of a conventional rotary compressor.

도 3은 본 고안에 따른 회전압축기의 회전축을 발췌하여 보인 도면이다.3 is a view showing an extract of the rotary shaft of the rotary compressor according to the present invention.

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

10 : 밀폐용기 20 : 구동부10: sealed container 20: drive unit

23 : 회전축 40 : 편심부23: rotation axis 40: eccentric portion

본 고안의 목적을 달성하기 위하여 본 고안은 압축부와 구동부가 내장된 밀폐용기, 구동부의 회전력을 압축부에 전달하는 회전축, 회전축에 마련되어 롤러가 실린더내에서 편심회전운동하게 하는 편심부를 구비하는 회전압축기에 있어서, 회전축과 편심부는 착탈가능하도록 결합된 것을 특징으로 한다.In order to achieve the object of the present invention, the present invention is a closed container having a compression unit and a drive unit, a rotation shaft for transmitting the rotational force of the drive unit to the compression unit, a rotation shaft provided on the rotation shaft to the eccentric portion to allow the roller to eccentric rotation movement in the cylinder In the compressor, it is characterized in that the rotating shaft and the eccentric portion are detachably coupled.

이하에서는 첨부도면을 참조하여 본 고안에 따른 바람직한 실시예를 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment according to the present invention in detail.

본 고안에 따른 압축기는 편심부 구조를 제외하고는 종래의 구성요소와 동일하기 때문에, 이에 대한 설명시 동일구성요소에 대해서는 동일명칭과 동일부호를 사용하여 설명한다.Compressor according to the present invention is the same as the conventional components except for the eccentric structure, the same components will be described using the same name and the same reference numerals for the description thereof.

본 고안이 적용되는 일반적인 회전압축기는 도 1에 도시한 바와 같이, 그 하부와 상부에 각각 냉매흡입관(10a)과 냉매토출관(10b)이 설치된 밀폐용기(10)가 마련되고, 이 밀폐용기(10)내에 구동부(20)와 압축부(30)가 배치되어 구성된다.As shown in FIG. 1, a general rotary compressor to which the present invention is applied is provided with a sealed container 10 in which a refrigerant suction pipe 10a and a refrigerant discharge pipe 10b are respectively installed at the lower and upper portions thereof, and the sealed container ( The drive unit 20 and the compression unit 30 are arranged in the 10.

우선, 구동부(20)는 밀폐용기(10)의 내주면에 설치된 고정자(21)와, 이 고정자(21)와 상호작용하여 회전하는 회전자(22), 그리고 회전자(22)의 회전운동을 전달받아 함께 회전하는 회전축(23)을 구비한다.First, the driving unit 20 transmits the stator 21 installed on the inner circumferential surface of the sealed container 10, the rotor 22 rotating in interaction with the stator 21, and the rotational movement of the rotor 22. It is provided with the rotating shaft 23 which rotates together.

이러한 구동부(20)의 하부에 마련되어 회전축(23)의 회전운동을 전달받아 유체를 압축하는 압축부(30)는 상하 양쪽이 개방된 실린더(31)와, 실린더(31)의 상하양쪽을 폐쇄하여 실린더(31)의 내부에 압축실(32)을 형성함과 함께 회전축(23)을 지지하는 상부덮개(33a)와 하부덮개(33b)를 구비한다. 또한, 압축실(32)내에는 회전축(23)에 편심되게 마련되어 압축실의 내면을 따라 편심회전운동 및 미끄런운동하면서 유체를 압축하는 롤러(35)가 마련된다. 그리고, 구동부(20)와 압축부(30)사이의 회전축(23)에는 편심질량의 회전에 따른 불안전성을 방지하기 위하여 밸런서(24)가 설치된다.Compression unit 30 provided in the lower portion of the drive unit 20 to receive the rotational movement of the rotary shaft 23 to compress the fluid is closed by the upper and lower sides of the cylinder 31 and the upper and lower sides of the cylinder 31 The upper cover 33a and the lower cover 33b which form the compression chamber 32 inside the cylinder 31 and support the rotating shaft 23 are provided. In addition, the compression chamber 32 is provided with a roller 35 which is provided eccentrically on the rotating shaft 23 to compress the fluid while eccentric rotational movement and sliding movement along the inner surface of the compression chamber. In addition, a balancer 24 is installed on the rotation shaft 23 between the driving unit 20 and the compression unit 30 to prevent instability due to rotation of the eccentric mass.

이 가운데 회전축(23)과 롤러(35) 사이에는 이들이 편심되게 결합될 수 있도록 도 3에 도시한 바와 같은 편심부(40)가 마련되는데, 이를 상세히 살펴보면, 회전축(23)과 편심부(40)는 분리되어 마련되어 회전축(23)과 결합될 수 있는 결합공(41)이 편심되어 형성되며, 편심부(40)는 회전축(23)과 다른 재질로 구성된다. 회전축(23)은 Fe주물제이지만, 편심부(40)는 무게중심의 회전에 의한 진동을 감소시키기 위해 가벼운 재질의 규소와 알루미늄으로 이루어진 합금을 사용한다. 또한, 편심부(40)의 일측은 개구된 형태로 마련될 수 있으며, 회전축(23)과 편심부(40)는 억지끼움, 나사선을 이용한 결합 등 다양한 방법으로 결합시킬 수 있다.Among them, an eccentric portion 40 as shown in FIG. 3 is provided between the rotating shaft 23 and the roller 35 so as to be eccentrically coupled thereto. Looking in detail, the rotating shaft 23 and the eccentric portion 40 are provided. Is provided to be separated is provided with a coupling hole 41 is eccentrically coupled to the rotary shaft 23, the eccentric portion 40 is composed of a different material from the rotary shaft (23). The rotating shaft 23 is made of Fe casting, but the eccentric portion 40 uses an alloy made of silicon and aluminum of light material to reduce vibration caused by the rotation of the center of gravity. In addition, one side of the eccentric portion 40 may be provided in an open form, the rotation shaft 23 and the eccentric portion 40 can be coupled in a variety of ways, such as interference fit, using a screw thread.

이와 같이 구성된 압축기는 냉매흡입관(10a)을 통해 유체가 실린더(31)의 내부에 형성된 압축실(32)로 유입되면 실린더(31)의 내주면을 따라 편심회전하는 롤러(35)에 의해 압축된다. 이 때, 회전축(23)과 함께 회전하는 편심부(40)는 회전축(23)보다 밀도가 낮은 가벼운 물질로 되어 있어 무게중심 이동에 따른 진동이 저감된다. 이렇게 하여 압축된 유체는 실린더(31) 밖으로 유출되고, 유출된 유체는 냉매토출관(10b)을 통해 외부로 배출된다.The compressor configured as described above is compressed by the roller 35 which eccentrically rotates along the inner circumferential surface of the cylinder 31 when the fluid flows into the compression chamber 32 formed inside the cylinder 31 through the refrigerant suction pipe 10a. At this time, the eccentric portion 40 which rotates together with the rotating shaft 23 is made of a lighter material having a lower density than the rotating shaft 23, so that the vibration caused by the movement of the center of gravity is reduced. In this way, the compressed fluid flows out of the cylinder 31, and the fluid flows out through the refrigerant discharge pipe 10b.

본 고안에 따른 회전압축기에서 회전축과 편심부를 착탈가능하게 형성하고, 편심부는 회전축보다 밀도가 낮은 재질을 사용한다.In the rotary compressor according to the present invention, the rotating shaft and the eccentric part are detachably formed, and the eccentric part uses a material having a lower density than the rotating shaft.

따라서, 편심부의 질량이 가벼워지므로 전체적인 압축기의 질량이 가벼워지며, 회전시에 무게중심이동에 따른 진동을 저감시킬 수 있음과 함께 소음을 저감시키는 이점이 있다. 또한, 진동이 저감되므로 밸런서의 크기도 소형으로 이루어질 수 있으며, 그로 인해 압축기의 제품비가 감소되고, 압축실의 용량을 변경할 때도 편심부의 크기만 변경하면 되는 이점이 있다.Therefore, since the mass of the eccentric portion is lighter, the mass of the entire compressor is lighter, and the vibration can be reduced according to the movement of the center of gravity during rotation, and there is an advantage of reducing noise. In addition, since the vibration is reduced, the size of the balancer can also be made compact, thereby reducing the product cost of the compressor, and there is an advantage in that only the size of the eccentric portion needs to be changed when changing the capacity of the compression chamber.

Claims (2)

구동부(20)와 압축부(30)가 내장된 밀폐용기(10), 상기 구동부(20)의 회전력을 상기 압축부(30)에 전달하는 회전축(23), 상기 회전축(23)에 마련되어 롤러(35)가 실린더(31)내에서 편심회전운동하게 하는 편심부(40)를 구비하는 회전압축기에 있어서, 상기 회전축(23)과 상기 편심부(40)는 착탈가능하도록 결합된 것을 특징으로 하는 회전압축기.A sealed container 10 in which the driving unit 20 and the compression unit 30 are embedded, a rotating shaft 23 for transmitting the rotational force of the driving unit 20 to the compression unit 30, and a roller provided in the rotating shaft 23. In a rotary compressor having an eccentric portion (40) for causing the eccentric rotation movement in the cylinder (31), the rotary shaft 23 and the eccentric portion (40) is characterized in that the rotation is detachably coupled compressor. 제 1 항에 있어서, 상기 편심부(40)는 상기 회전축(23)을 이루는 재질보다 밀도가 낮은 재질로 이루어진 것을 특징으로 하는 회전압축기.The rotary compressor of claim 1, wherein the eccentric portion (40) is made of a material having a lower density than the material forming the rotary shaft (23).
KR2019960028448U 1996-09-06 1996-09-06 A rotary compressor KR0128917Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019960028448U KR0128917Y1 (en) 1996-09-06 1996-09-06 A rotary compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019960028448U KR0128917Y1 (en) 1996-09-06 1996-09-06 A rotary compressor

Publications (2)

Publication Number Publication Date
KR19980015233U KR19980015233U (en) 1998-06-25
KR0128917Y1 true KR0128917Y1 (en) 1999-01-15

Family

ID=19466316

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019960028448U KR0128917Y1 (en) 1996-09-06 1996-09-06 A rotary compressor

Country Status (1)

Country Link
KR (1) KR0128917Y1 (en)

Also Published As

Publication number Publication date
KR19980015233U (en) 1998-06-25

Similar Documents

Publication Publication Date Title
KR100315954B1 (en) Compressor
KR0128917Y1 (en) A rotary compressor
JPH06346878A (en) Rotary compressor
US5788472A (en) Hermetic rotary compressor with eccentric roller
KR0136065Y1 (en) Rotary compressor having eccentric shaft
KR0159553B1 (en) A closed type rotary compressor
KR19990040633A (en) Thrust bearings in hermetic reciprocating compressors
JP3168101B2 (en) Rotary compressor
KR0136051Y1 (en) Accumulator of compressor
KR100219432B1 (en) Rotary compressor
KR200154001Y1 (en) Coolant filling pipe of compressor
KR100602695B1 (en) Rotary compressor
KR100216191B1 (en) Discharing muffler of compressor
KR19990002723U (en) Rotary compressor
KR200159710Y1 (en) Discharge device of a hermetic reciprocating compressor
KR200284265Y1 (en) Rotor of rotary comrressor
KR200150835Y1 (en) Rotary compressor
KR950000958Y1 (en) Rotary compressor
KR200154000Y1 (en) Valve plate of closed type piston compressor
KR0128910Y1 (en) A rotary compressor
KR20000004282A (en) Closed-typed compressor
KR19990016821U (en) Balance weight of hermetic reciprocating compressor
KR20000001923A (en) Sealing type compressor
KR19990036034U (en) Rotary shaft of hermetic compressor
KR19990016815U (en) Cylinder Block of Hermetic Reciprocating Compressor

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 20070727

Year of fee payment: 10

LAPS Lapse due to unpaid annual fee