KR20030091150A - Case structure for enclosed compressor - Google Patents

Case structure for enclosed compressor Download PDF

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Publication number
KR20030091150A
KR20030091150A KR1020020028996A KR20020028996A KR20030091150A KR 20030091150 A KR20030091150 A KR 20030091150A KR 1020020028996 A KR1020020028996 A KR 1020020028996A KR 20020028996 A KR20020028996 A KR 20020028996A KR 20030091150 A KR20030091150 A KR 20030091150A
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KR
South Korea
Prior art keywords
casing
mask
metal plate
noise
hermetic compressor
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KR1020020028996A
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Korean (ko)
Inventor
윤형표
Original Assignee
엘지전자 주식회사
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Priority to KR1020020028996A priority Critical patent/KR20030091150A/en
Publication of KR20030091150A publication Critical patent/KR20030091150A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component 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
    • F04B39/0027Pulsation and noise damping means
    • F04B39/0033Pulsation and noise damping means with encapsulations
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component 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
    • F04B39/0027Pulsation and noise damping means
    • F04B39/0055Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • F04B39/0061Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using muffler volumes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00Components
    • F04C2240/30Casings or housings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

PURPOSE: A structure of a casing of a hermetic compressor is provided to reduce discharge of noise generated in the casing to the outside without increasing thickness of the casing. CONSTITUTION: A casing(10) is formed with a hemispheric upper cap(11) and a hemispheric lower cap(12) assembled to each other and coupled by welding to be airtight. An electromotive mechanism part generating driving force and a compression mechanism part receiving the driving force of the electromotive mechanism force and compressing working gas are installed in the casing. A noise damping chambers(130) are concavely formed on the whole or some of an inside wall of the casing to act as resonant chambers. The noise damping chamber has a narrow inlet part and an inside with large diameter for Helmholtz's effect. A mask with a fixed pattern formed thereon is put on a metal plate. Etching solution is sprayed or flowed to an upper side of the mask to erode the metal plate without eroding the mask so as to form the noise damping chambers. The mask is removed from the metal plate. The metal plate is processed to form the upper cap and the lower cap.

Description

밀폐형 압축기의 케이싱 구조{CASE STRUCTURE FOR ENCLOSED COMPRESSOR}Casing structure of hermetic compressor {CASE STRUCTURE FOR ENCLOSED COMPRESSOR}

본 발명은 밀폐형 압축기의 케이싱 구조에 관한 것으로, 특히 소음을 효과적으로 줄일 수 있는 밀폐형 압축기의 케이싱 구조에 관한 것이다.The present invention relates to a casing structure of a hermetic compressor, and more particularly to a casing structure of a hermetic compressor that can effectively reduce noise.

일반적으로 밀폐형 압축기는 케이싱의 내부에 압축기구부와 전동기구부를 함께 구비하는 것으로, 압축기 소음을 줄이기 위한 방법으로는 압축기구부나 전동기구부에서 발생하는 소음을 원천적으로 감쇠하는 방법과, 압축기구부나 전동기구부에서 발생하는 소음을 케이싱이 차단하거나 적어도 감쇠하도록 하는 방법이 있다.In general, a hermetic compressor includes a compression mechanism and an electric mechanism in the casing. In order to reduce the compressor noise, a method of attenuating the noise generated by the compression mechanism or the electric mechanism, and the compression mechanism or the electric mechanism There is a way to block or at least attenuate the casing noise.

본 발명은 케이싱의 구조를 개조하여 압축기구부나 전동기구부에서 발생하는 소음을 줄이고자 하는 것과 관련이 있다.The present invention relates to the modification of the structure of the casing to reduce the noise generated in the compression mechanism or power mechanism.

압축기를 구성하는 케이싱(10)은, 도 1에 도시한 바와 같이, 작동가스의 봉입하고 내부에서 발생하는 소음을 감소하기 위해 밀봉한 상태로 제작한다.As shown in Fig. 1, the casing 10 constituting the compressor is manufactured in a sealed state in order to seal the working gas and reduce noise generated therein.

이와 같은 케이싱(10)은 다양한 형태로 제작하나 보통 반구 형태로 형성한 상부캡(11)과 하부캡(12)을 서로 접합하여 제작하고, 상부캡(11) 및 하부캡(12)은 평판 압연 강판을 프레스로 가공하며, 상부캡(11)과 하부캡(12)을 용접으로 접합하여 제작한다.The casing 10 is manufactured in various forms, but the upper cap 11 and the lower cap 12, which are usually formed in a hemispherical shape, are bonded to each other, and the upper cap 11 and the lower cap 12 are plate rolled. The steel sheet is processed by a press, and the upper cap 11 and the lower cap 12 are manufactured by welding.

그러나 상기한 바와 같은 케이싱(10)은 내벽(F)을 단순 평면으로 형성하여 케이싱(10) 내부에 설치한 전동기구부 및 압축기구부에서 발생하는 소음이 도 2에 도시한 바와 같이, 내벽(F)에 반사하거나 또는 케이싱(10)을 통해 외부로 방사 및 전파됨으로써 케이싱(10)의 내부에서 발생하는 소음이 효과적으로 감소되지 못할 뿐만 아니라 소음 방출을 감소시키기 위해 케이싱(10)의 두께를 두껍게 할 경우 케이싱(10) 내부에서 발생되는 열이 열전도로 열교환되는 효과가 저하하는 문제점이 있었다.However, as described above, the casing 10 has an inner wall F formed in a simple plane, and noise generated in the electric mechanism unit and the compression mechanism unit installed inside the casing 10 is illustrated in FIG. By reflecting to or radiating and propagating to the outside through the casing 10, the noise generated inside the casing 10 is not effectively reduced as well as when the casing 10 is thickened to reduce noise emission. (10) There was a problem that the effect that the heat generated inside heat exchange with the heat conduction is reduced.

상기한 바와 같은 문제점을 감안하여 안출한 본 발명은 케이싱의 두께를 두껍게 하지 않으면서도 그 케이싱 내부에서 발생되는 소음이 외부로 방사되는 것을 줄일 수 있는 밀폐형 압축기의 케이싱 구조를 제공하는데 본 발명의 목적이 있다.SUMMARY OF THE INVENTION The present invention devised in view of the above problems provides a casing structure of a hermetic compressor which can reduce the radiation generated inside the casing to the outside without thickening the casing. have.

도 1은 종래 케이싱을 구비한 밀폐형 압축기의 일례를 보인 종단면도.1 is a longitudinal sectional view showing an example of a hermetic compressor with a conventional casing;

도 2는 종래 밀폐형 압축기에서 케이싱 주변의 소음상태를 보인 개략도.Figure 2 is a schematic diagram showing a noise state around the casing in a conventional hermetic compressor.

도 3은 본 발명 케이싱을 구비한 밀폐형 압축기의 일례를 보인 종단면도.Figure 3 is a longitudinal sectional view showing an example of a hermetic compressor provided with a casing of the present invention.

도 4는 본 발명 밀폐형 압축기에서 케이싱 주변의 소음상태를 보인 개략도.Figure 4 is a schematic diagram showing a noise state around the casing in the hermetic compressor of the present invention.

도 5는 본 발명 밀폐형 압축기의 케이싱을 제작하는 과정을 단계별로 보인 사시도.Figure 5 is a perspective view showing step by step the process of manufacturing the casing of the hermetic compressor of the present invention.

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

100 : 케이싱 110 : 상부캡100: casing 110: upper cap

120 : 하부캡 130 : 소음감쇠방120: lower cap 130: noise reduction room

M : 마스크 h : 패턴(홀)M: Mask h: Pattern (Hole)

상기한 바와 같은 본 발명의 목적을 달성하기 위하여, 전동기구부와 이 전동기구부에 결합하여 유체를 흡입 압축하기 위한 압축기구부를 함께 내장하는 케이싱의 내벽면에 다수 개의 소음감쇠방을 함몰지게 형성하는 것을 특징으로 하는 밀폐형 압축기의 케이싱 구조를 제공한다.In order to achieve the object of the present invention as described above, to form a plurality of noise attenuation chambers on the inner wall surface of the casing, which is coupled to the electric mechanism unit and the compression mechanism unit for suction and compression of the fluid. A casing structure of a hermetic compressor is provided.

이하, 본 발명의 밀폐형 압축기의 케이싱 구조를 첨부도면에 도시한 일실시예에 의거하여 설명하면 다음과 같다.Hereinafter, the casing structure of the hermetic compressor of the present invention will be described based on the embodiment shown in the accompanying drawings.

도 3은 본 발명 케이싱을 구비한 밀폐형 압축기의 일례를 보인 종단면도이고, 도 4는 본 발명 밀폐형 압축기에서 케이싱 주변의 소음상태를 보인 개략도이며, 도 5는 본 발명 밀폐형 압축기의 케이싱을 제작하는 과정을 단계별로 보인 사시도이다.Figure 3 is a longitudinal cross-sectional view showing an example of a hermetic compressor with a casing of the present invention, Figure 4 is a schematic diagram showing a noise state around the casing in the hermetic compressor of the present invention, Figure 5 is a process of manufacturing a casing of the hermetic compressor of the present invention Is a perspective view shown step by step.

이에 도시한 바와 같이 본 발명에 의한 밀폐형 압축기의 케이싱(100)은, 반구형상의 상부캡(110)과 하부캡(120)을 조립한 후 용접으로 결합하여 밀폐형으로 형성한다. 또 케이싱(100)의 내부에 구동력을 발생시키는 전동기구부(미도시)와 그 전동기구부의 구동력을 전달받아 작동가스를 압축하는 압축기구부(미도시)를 함께 설치한다. 그리고 케이싱(100)의 내벽면 전체 또는 일부에 걸쳐 일종의 공명실 역할을 하는 소음감쇠방(130)을 함몰지게 형성한다.As shown in the casing 100 of the hermetic compressor according to the present invention, the hemispherical upper cap 110 and the lower cap 120 are assembled to form a hermetic joint by welding. In addition, the casing 100 is provided with an electric mechanism part (not shown) for generating a driving force and a compression mechanism part (not shown) for compressing a working gas by receiving the driving force of the electric mechanism part. And the noise attenuation room 130, which serves as a kind of resonance room, is formed to be recessed over the whole or part of the inner wall surface of the casing 100.

소음감쇠방(130)은 도 4에서와 같이 측면투영시 입구부 직경이 좁고 내부직경이 상대적으로 크게 형성하는 것이 헬름홀쯔 효과(Helmholtz's Effect)를 감안할 때 바람직하나, 경우에 따라서는 반구형이나 원뿔형 또는 다각형 등 그 소음감쇠방을 형성하는 공법이나 공구에 따라 다양하게 형성할 수 있다.The noise attenuation room 130 is preferably formed in consideration of the Helmholtz's Effect, in which the inlet diameter is narrow and the inner diameter is relatively large during side projection as shown in FIG. 4, but in some cases, hemispherical or conical or It can be formed in various ways according to the construction method or tool which forms the noise attenuation room, such as a polygon.

또, 소음감쇠방(130)은 그 내부공간의 체적이나 입구부 직경 그리고 깊이를 불규칙하게 형성하고 것이 소음을 감쇠하는데 더욱 바람직하다.In addition, the noise attenuation room 130 is more preferable to attenuate noise by irregularly forming the volume or inlet diameter and depth of the inner space.

상기와 같은 본 발명 밀폐형 압축기의 케이싱은 다음과 같은 제작한다.The casing of the hermetic compressor of the present invention as described above is manufactured as follows.

즉, 케이싱의 내벽면에 다수 개의 소음감쇠방을 형성하기 위하여는 통상적인 식각공법이나 펀칭공법을 이용할 수 있다.That is, in order to form a plurality of noise attenuation chambers on the inner wall surface of the casing, a conventional etching method or a punching method can be used.

식각공법은 도 5에서와 같이 소정의 두께와 넓이를 갖는 금속판(P)의 상면에 소정의 패턴(예컨데, 다수 개의 원)(h)을 형성한 마스크(M)를 얹고, 그 마스크(M)의 상면에 마스크(M)는 부식되지 않고 금속판(P)만 부식할 수 있는 식각액을 뿌리거나 흘러 보낸다.In the etching method, as shown in FIG. 5, a mask M having a predetermined pattern (for example, a plurality of circles) h is formed on an upper surface of a metal plate P having a predetermined thickness and width, and the mask M On the upper surface of the mask (M) is sprayed or flowed through the etching solution that can not corrode only the metal plate (P).

이 식각액은 마스크(M)의 패턴(h)으로 흘러들어 그 패턴(h)에 속하는 금속판(M)의 표면을 부식시켜 상기한 소음감쇠방(130)을 형성한다. 이후 마스크(M)를 금속판(P)에서 걷어낸 다음에 금속판(P)을 상부캡(110) 또는 하부캡(120)의 형상에 맞게 프레스 등으로 가공 형성함으로써 케이싱(100)의 제작을 완료한다.The etchant flows into the pattern h of the mask M to corrode the surface of the metal plate M belonging to the pattern h to form the noise damping room 130 described above. Thereafter, the mask M is removed from the metal plate P, and then the metal plate P is formed by pressing or the like to conform to the shape of the upper cap 110 or the lower cap 120 to complete the manufacture of the casing 100. .

또, 도면으로 도시하지는 않았으나 금속판을 프레스 등으로 눌러 상부캡 또는 하부캡으로 가공할 때 그 프레스의 압력면에 돌기를 형성하여 가압시 돌기가 금속판의 내벽면을 눌러 상기한 소음감쇠방을 음형지게 형성하도록 할 수도 있다.In addition, although not shown in the drawings, when pressing the metal plate with a press or the like to form a projection on the pressure surface of the press when pressing to form a projection to press the inner wall surface of the metal plate when pressed to make the noise attenuation room negative. It can also be formed.

이러한 밀폐형 압축기의 케이싱은 전류를 인가하여 전동기구부가 구동력을 발생하면, 압축기구부가 구동력을 전달받아 작동가스를 흡입 압축하여 고온 고압의 상태로 토출한다. 이러한 과정에서 압축기구부에서는 맥동 압력파가 발생하여 밀폐용기(100)의 내벽 전체에 걸쳐 퍼져 나간다. 내벽 전체에 걸쳐 퍼져 나간 맥동 압력파는 소음감쇠방(130)을 거치면서 점차 감쇠됨으로써 케이싱(100)을 통해 외부로 방사되는 소음을 최소화할 수 있다.In the casing of the hermetic compressor, when the electric mechanism generates a driving force by applying a current, the compressor mechanism receives the driving force and sucks and compresses the working gas to discharge the gas at a high temperature and high pressure. In this process, a pulsation pressure wave is generated in the compression mechanism and spreads over the entire inner wall of the sealed container 100. Pulsating pressure waves spread across the inner wall is gradually attenuated while passing through the noise attenuation room 130, thereby minimizing noise emitted to the outside through the casing 100.

이로써, 케이싱의 두께를 두껍게 하지 않고도 압축기구부에서 발생하는 맥동 압력파를 용이하게 감쇠할 수 있어 압축기 무게를 줄일 수 있고 케이싱 내부의 열을 용이하게 방출할 수 있어 압축기 효율을 높일 수 있다.As a result, the pulsation pressure wave generated in the compression mechanism can be easily attenuated without increasing the thickness of the casing, thereby reducing the weight of the compressor and easily dissipating heat inside the casing, thereby increasing the compressor efficiency.

본 발명에 의한 밀폐형 압축기의 케이싱 구조는, 내벽에 소음감쇠방을 함몰지게 형성함으로써, 케이싱의 두께를 두껍게 하지 않고도 압축기구부에서 발생하는 소음을 효과적으로 감쇠할 수 있고 이를 통해 압축기를 경량화할 수 있을 뿐만 아니라 방열을 원활하게 하여 압축기 효율을 높일 수 있다.The casing structure of the hermetic compressor according to the present invention, by forming a noise damping room on the inner wall, it is possible to effectively attenuate the noise generated in the compression mechanism portion without increasing the thickness of the casing, thereby making it possible to lighten the compressor. In addition, the heat dissipation can be smoothed to increase the compressor efficiency.

Claims (2)

전동기구부와 이 전동기구부에 결합하여 유체를 흡입 압축하기 위한 압축기구부를 함께 내장하는 케이싱의 내벽면에 다수 개의 소음감쇠방을 함몰지게 형성하는 것을 특징으로 하는 밀폐형 압축기의 케이싱 구조.A casing structure of a hermetic compressor characterized in that a plurality of noise attenuation chambers are recessed on an inner wall surface of the casing, which is coupled to the electric mechanism unit and the compressor mechanism for suction-compressing fluid. 제1항에 있어서,The method of claim 1, 소음감쇠방은 에칭으로 형성하는 것을 특징으로 하는 밀폐형 압축기의 케이싱 구조.The casing structure of a hermetic compressor, wherein the noise attenuation chamber is formed by etching.
KR1020020028996A 2002-05-24 2002-05-24 Case structure for enclosed compressor KR20030091150A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103982400A (en) * 2014-06-06 2014-08-13 黄石祥宇轻工配件有限公司 Suction muffler with high noise reduction performance of refrigeration compressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103982400A (en) * 2014-06-06 2014-08-13 黄石祥宇轻工配件有限公司 Suction muffler with high noise reduction performance of refrigeration compressor

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