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KR20040090338A - Apparatus reducing noise for hermetic rotary compresser - Google Patents

Apparatus reducing noise for hermetic rotary compresser Download PDF

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Publication number
KR20040090338A
KR20040090338A KR1020030024477A KR20030024477A KR20040090338A KR 20040090338 A KR20040090338 A KR 20040090338A KR 1020030024477 A KR1020030024477 A KR 1020030024477A KR 20030024477 A KR20030024477 A KR 20030024477A KR 20040090338 A KR20040090338 A KR 20040090338A
Authority
KR
South Korea
Prior art keywords
muffler
hermetic rotary
rotary compressor
upper bearing
gasket
Prior art date
Application number
KR1020030024477A
Other languages
Korean (ko)
Inventor
최차림
Original Assignee
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 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR1020030024477A priority Critical patent/KR20040090338A/en
Publication of KR20040090338A publication Critical patent/KR20040090338A/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
    • 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
    • F04B39/0094—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 crankshaft
    • 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
    • F04C27/001—Radial sealings for working fluid
    • 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
    • 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
    • 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: An apparatus for reducing a noise of a hermetic rotary compressor is provided to reduce a noise of gas discharged from a hermetic rotary compressor by removing a gap between a muffler and an upper bearing, thereby improving an effect of noise reduction. CONSTITUTION: A protruded part(10b) is formed in circular shape at a boss part(10a) of an upper bearing supporting a crank shaft. A gasket(30) is inserted into the boss part of the crank shaft so that the gasket contacts with the circular protruded part and is compressively fixed at a peripheral part of a combining hole(21) of a muffler(20) to prevent a gap from generating between the upper bearing and the muffler.

Description

밀폐형 회전식 압축기의 소음 저감장치{APPARATUS REDUCING NOISE FOR HERMETIC ROTARY COMPRESSER}Noise reduction device for hermetic rotary compressor {APPARATUS REDUCING NOISE FOR HERMETIC ROTARY COMPRESSER}

본 발명은 밀폐형 회전식 압축기의 소음 저감장치에 관한 것으로, 특히 밀폐형 회전식 압축기의 토출 가스의 소음을 저감시키기 위하여 설치되는 머플러와 상부 베어링 사이의 틈새를 제거하여 소음 저감 효과를 향상시킬 수 있도록 한 밀폐형 회전식 압축기의 소음 저감장치에 관한 것이다.The present invention relates to a noise reduction device of a hermetic rotary compressor, and in particular, a hermetic rotary type to improve the noise reduction effect by eliminating the gap between the muffler and the upper bearing installed to reduce the noise of the discharge gas of the hermetic rotary compressor. It relates to a noise reduction device of a compressor.

종래의 밀폐형 회전식 압축기는 압축되어 토출되는 가스의 소음을 저감시키기 위하여 가스가 토출되는 부분에 머플러를 설치한 구조를 가진다. 그러나 상부 베어링(메인 베어링)과 머플러의 조립 공차로 인하여 압축 가스가 주위로 방사되어 누설이 발생하기 때문에 소음 저감 효과를 반감시키는 문제점이 있었다.The conventional hermetic rotary compressor has a structure in which a muffler is installed in a portion where a gas is discharged in order to reduce noise of the gas discharged by compression. However, due to the assembly tolerance of the upper bearing (main bearing) and the muffler, there is a problem that the noise reduction effect is halved because the compressed gas is emitted to the surroundings and leakage occurs.

도 1은 종래 밀폐형 회전식 압축기의 종단면도를 보인 것이고, 도 2는 종래 밀폐형 회전식 압축기의 머플러 구성을 보인 부분 단면도로서, 이에 도시한 바와 같이, 밀폐용기(1) 내부에는 회전자(2)와 고정자(3)로 이루어진 전동기(4)가 설치되어 있고, 상기 회전자(2)의 중심에 수직방향으로 형성된 축공(2a)에는 크랭크축(5)이 압입 고정되어 있다.Figure 1 shows a longitudinal cross-sectional view of a conventional hermetic rotary compressor, Figure 2 is a partial cross-sectional view showing a muffler configuration of a conventional hermetic rotary compressor, as shown, the rotor 2 and the stator inside the hermetic container (1) The electric motor 4 which consists of (3) is provided, and the crankshaft 5 is press-fitted and fixed in the shaft hole 2a formed perpendicular to the center of the said rotor 2.

상기 크랭크축(5)의 하단부에는 편심부(6)가 일체로 형성되어 있고, 그 편심부(6)의 외측에는 롤링 피스톤(7)이 삽입되어 있으며, 그 롤링 피스톤(7)이 회전하면 냉매가스를 압축하는 압축공간(8)이 형성되도록 실린더(9)와 상,하부 베어링(10)(11)으로 이루어지는 압축기구부(12)가 설치되어 있다.An eccentric portion 6 is integrally formed at the lower end of the crankshaft 5, and a rolling piston 7 is inserted outside the eccentric portion 6, and when the rolling piston 7 rotates, the refrigerant The compression mechanism part 12 which consists of the cylinder 9 and the upper and lower bearings 10 and 11 is provided so that the compression space 8 which compresses gas may be formed.

상기 상부 베어링(10)에 형성된 토출공(10a)의 출구측에는 밸브조립체(15)가 설치되고, 그 밸브조립체(15)의 상부에는 토출 소음을 저감시키기 위한 소음기(16)가 설치되어 있다.The valve assembly 15 is installed at the outlet side of the discharge hole 10a formed in the upper bearing 10, and the silencer 16 is provided at the upper portion of the valve assembly 15 to reduce the discharge noise.

그리고, 상기 실린더(9)의 흡입구(9a)측에는 액냉매의 유입을 방지하기 위한 어큐뮬레이터(17)가 연통되도록 설치되어 있고, 상기 밀폐용기(1)의 상면에는 압축기구부(12)에서 압축된 고압의 냉매가스를 외부로 토출하기 위한 토출관(18)이 설치되어 있다.In addition, an accumulator 17 is installed at the inlet 9a of the cylinder 9 to prevent inflow of the liquid refrigerant, and a high pressure compressed by the compression mechanism 12 is provided on the upper surface of the sealed container 1. A discharge tube 18 for discharging the refrigerant gas to the outside is provided.

상기와 같이 구성되어 있는 종래의 밀폐형 회전식 압축기는 전원이 인가되면 전동기(4)의 회전자(2)가 회전을 하고, 그 회전자(2)에 압입되어 있는 크랭크축(5)이 회전을 한다.In the conventional hermetic rotary compressor configured as described above, when power is applied, the rotor 2 of the electric motor 4 rotates, and the crankshaft 5 press-fitted to the rotor 2 rotates. .

그리고, 상기와 같이 크랭크축(5)의 회전에 따라 크랭크축(5)의 하단부에 형성된 편심부(6)와, 그 편심부(6)에 결합된 롤링 피스톤(7)이 회전을 하면 실린더(9)의 흡입구(9a)를 통하여 압축공간(8)의 내부로 흡입된 저온저압의 냉매가스를 고온고압의 냉매가스로 압축하게 된다.As described above, when the eccentric portion 6 formed at the lower end of the crank shaft 5 and the rolling piston 7 coupled to the eccentric portion 6 rotate as the crank shaft 5 rotates, the cylinder ( The low-temperature low-pressure refrigerant gas sucked into the compression space 8 through the suction port 9a of 9) is compressed into the high-temperature high-pressure refrigerant gas.

또한, 상기와 같이 압축된 냉매가스는 밸브조립체(15)를 통하여 토출되어 소음기(16)의 통공(16a)을 통하여 밀폐용기(1)의 내부로 토출되고, 이와 같이 토출된 고온고압의 냉매가스는 회전자(2)와 고정자(3)의 틈 사이를 지나 토출관(18)을 통하여 외부로 토출되어 진다.In addition, the refrigerant gas compressed as described above is discharged through the valve assembly 15 to be discharged into the sealed container 1 through the through hole 16a of the silencer 16, and the refrigerant gas of the high temperature and high pressure discharged as described above. Is discharged to the outside through the discharge pipe 18 through the gap between the rotor (2) and the stator (3).

이와 같은 종래의 밀폐형 회전식 압축기에는 냉매가스가 토출되는 부분의 공명을 저감시키기 위하여 머플러(20)를 적용하고 있으며, 이 머플러(20)는 고온, 고압 가스의 흐름을 저감시키고자 하는 방향으로 유도하여 특정 주파수의 소음을 저감시키고 있다.In the conventional hermetic rotary compressor, a muffler 20 is applied to reduce resonance of a portion where refrigerant gas is discharged, and the muffler 20 is guided in a direction to reduce the flow of high temperature and high pressure gas. The noise of a specific frequency is reduced.

상기 머플러(20)는 그의 결합공(21)에 크랭크축(5)의 보스부(10a)가 끼워지는 형태로 조립되고, 상부 베어링(10)에 복수개의 볼트(22)로 체결된다.The muffler 20 is assembled in such a way that the boss portion 10a of the crankshaft 5 is fitted into the coupling hole 21 and fastened to the upper bearing 10 by a plurality of bolts 22.

그러나, 종래의 밀폐형 회전식 압축기는 기구부를 구성하고 있는 메인 베어링인 상부 베어링(10)과 머플러(20)는 서로의 조합으로 인하여 항상 틈새가 생기게 되며, 이러한 상부 베어링(10)과 머플러(20)의 틈새는 일정하기가 않기 때문에 머플러(20)의 효과도 일정하지가 못하다.However, in the conventional hermetic rotary compressor, the upper bearing 10 and the muffler 20, which are the main bearings constituting the mechanism, always have a gap due to the combination of the upper bearing 10 and the muffler 20. Since the gap is not constant, the effect of the muffler 20 is not constant.

그리고 머플러(20)에 의해 고온, 고압의 가스를 일정 방향으로 유도하고자 하지만 고온, 고압의 가스는 상부 베어링(10)과 머플러(20) 사이의 틈새를 빠져나가게 되며, 고온, 고압의 가스가 상부 베어링(10)과 머플러(20)의 좁은 틈새를 통과하면서 이상음이 발생되는 문제점이 있었다.In addition, the muffler 20 intends to induce high-temperature and high-pressure gas in a predetermined direction, but the high-temperature and high-pressure gas exits the gap between the upper bearing 10 and the muffler 20, and the high-temperature and high-pressure gas is There was a problem that abnormal sounds were generated while passing through a narrow gap between the bearing 10 and the muffler 20.

본 발명은 상기한 바와 같은 종래의 문제점 및 결함을 해소하기 위하여 안출한 것으로, 밀폐형 회전식 압축기의 토출 가스의 소음을 저감시키기 위하여 설치되는 머플러와 상부 베어링 사이의 틈새를 제거하여 소음 저감 효과를 향상시킬 수 있게 되는 밀폐형 회전식 압축기의 소음 저감장치를 제공하고자 함에 목적이 있다.The present invention has been made to solve the above problems and defects as described above, to improve the noise reduction effect by eliminating the gap between the muffler and the upper bearing is installed to reduce the noise of the discharge gas of the hermetic rotary compressor. It is an object of the present invention to provide a noise reduction device of a hermetic rotary compressor.

도 1은 종래 밀폐형 회전식 압축기의 종단면도.1 is a longitudinal sectional view of a conventional hermetic rotary compressor.

도 2는 종래 밀폐형 회전식 압축기의 머플러 구성을 보인 부분 단면도.Figure 2 is a partial cross-sectional view showing a muffler configuration of a conventional hermetic rotary compressor.

도 3 내지 도 5는 본 고안에 의한 밀폐형 회전식 압축기의 머플러에 관한 것으로,3 to 5 relates to a muffler of the hermetic rotary compressor according to the present invention,

도 3은 밀폐형 회전식 압축기의 머플러 구성을 보인 부분 단면도.3 is a partial cross-sectional view showing a muffler configuration of a hermetic rotary compressor.

도 4는 도 3의 요부 확대 단면도.4 is an enlarged cross-sectional view of the main portion of FIG. 3;

도 5는 가스킷의 사시도.5 is a perspective view of a gasket.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

1 : 밀폐용기 4 : 전동기1: sealed container 4: electric motor

5 : 크랭크축 10 : 상부 베어링5: crankshaft 10: upper bearing

10a : 보스부 10b : 환상 단턱부10a: boss portion 10b: annular stepped portion

20 : 머플러 21 : 결합공20: muffler 21: bonding hole

22 : 볼트 30 : 가스킷22: bolt 30: gasket

위와 같은 목적을 달성하기 위하여 본 발명에 의한 밀폐형 회전식 압축기의 소음 저감장치는 밀폐형 회전식 압축기의 밀폐용기의 내부에 설치되는 전동기의 크랭크축을 지지하는 상부 베어링의 보스부와 머플러 사이에 가스킷을 삽입하여 가스의 누설을 방지하도록 구성된다.In order to achieve the above object, the noise reduction device of a hermetic rotary compressor according to the present invention inserts a gas gasket between a boss and a muffler of an upper bearing for supporting a crank shaft of an electric motor installed inside a hermetically sealed container of a hermetic rotary compressor. It is configured to prevent the leakage of.

상기 상부 베어링의 보스부에는 단턱부가 환형으로 형성되고, 이 크랭크축의 보스부에 가스킷이 삽입되어 환상 단턱부에 접촉되며, 상기 머플러의 결합공 주연부에 하면에 의해 압착 고정되어 구성된다.The boss portion of the upper bearing is formed in an annular shape, and a gasket is inserted into the boss portion of the crankshaft to contact the annular stage, and is pressed and fixed to the peripheral edge of the coupling hole of the muffler.

상기 가스킷은 밀폐형 회전식 압축기의 고온, 고압에 견디는 재질로 형성된 가스킷을 사용하는 것이 바람직하다.The gasket may be a gasket formed of a material that withstands high temperature and high pressure of the hermetic rotary compressor.

이와 같은 본 발명은 상부 베어링과 머플러 사이에 고온, 고압에 견디는 가스킷을 압착 고정시켜 고온, 고압 가스의 누설을 방지할 수 있으며 이에 의해 머플러의 공명음을 저감시켜 결국 소음을 저감시키는 효과를 갖는다.The present invention can be prevented from leaking high-temperature, high-pressure gas by pressing and fixing a gasket resistant to high temperature and high pressure between the upper bearing and the muffler, thereby reducing the resonance sound of the muffler, thereby reducing the noise.

이하, 본 발명을 첨부한 도면에 실시예를 들어 상세히 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail as follows.

도 3 내지 도 5는 본 고안에 의한 밀폐형 회전식 압축기의 머플러에 관한 것으로, 도 3에는 본 고안이 채용된 밀폐형 회전식 압축기의 종단면도가 도시되고, 도 3에는 밀폐형 회전식 압축기의 머플러 구성을 보인 부분 단면도, 도 4에는 도 3의 요부 확대 단면도가 각각 도시되어 있으며, 도 5에는 가스킷의 사시도가 도시되어 있다.3 to 5 are related to the muffler of the hermetic rotary compressor according to the present invention, Figure 3 is a longitudinal cross-sectional view of the hermetic rotary compressor is adopted, Figure 3 is a partial cross-sectional view showing the muffler configuration of the hermetic rotary compressor. 4 is an enlarged cross-sectional view of the main part of FIG. 3, and FIG. 5 is a perspective view of the gasket.

이에 도시한 바와 같이, 밀폐용기(1) 내부에 회전자(2)와 고정자(3)로 이루어진 전동기(4)가 설치되고, 상기 회전자(2)의 중심에 수직방향으로 형성된 축공(2a)에는 크랭크축(5)이 압입 고정되어 있다.As shown in the drawing, an electric motor 4 made of a rotor 2 and a stator 3 is installed inside the sealed container 1, and the shaft hole 2a formed in the vertical direction in the center of the rotor 2 is provided. The crankshaft 5 is press-fitted and fixed to it.

상기 크랭크축(5)의 하단부에 형성된 편심부(6)의 외측에는 롤링 피스톤(7)이 삽입되고, 그 롤링 피스톤(7)이 실린더(9)와 상,하부 베어링(10)(11)으로 이루어지는 압축기구부(12)가 설치되어 있다.A rolling piston 7 is inserted outside the eccentric portion 6 formed at the lower end of the crankshaft 5, and the rolling piston 7 is connected to the cylinder 9 and the upper and lower bearings 10 and 11. The compression mechanism part 12 which consists of is provided.

상기 상부 베어링(10)에는 소음을 저감시키기 위한 머플러(20)가 그의 결합공(21)에 크랭크축(5)의 보스부(10a)가 삽입되는 형태로 조립되고 복수개의 볼트(22)로 고정되어 있다.The upper bearing 10 is assembled in a form in which a muffler 20 for reducing noise is assembled in a form in which the boss portion 10a of the crankshaft 5 is inserted into its coupling hole 21 and fixed with a plurality of bolts 22. It is.

이와 같은 밀폐형 회전식 압축기에는 본 고안에 따라 상기 크랭크축(5)을 지지하는 상부 베어링(10)의 보스부(10a)에는 단턱부(10b)가 환형으로 형성되고, 이 크랭크축(5)의 보스부(10a)에 가스킷(30)이 삽입되어 환상 단턱부(10b)에 접촉되며, 상기 머플러(20)의 결합공(21) 주연부에 하면에 의해 압착 고정됨으로써 상기 상부 베어링(10)과 머플러(20) 사이에 틈새가 방지되도록 되어 있다.In the hermetic rotary compressor, the stepped portion 10b is formed in an annular shape in the boss portion 10a of the upper bearing 10 supporting the crankshaft 5 according to the present invention, and the boss of the crankshaft 5 is formed. The gasket 30 is inserted into the portion 10a to be in contact with the annular stepped portion 10b, and the upper bearing 10 and the muffler are formed by being pressed and fixed to the peripheral edge of the coupling hole 21 of the muffler 20. 20) The gap is prevented between them.

상기 가스킷(30)에는 내압, 내열 재질로 형성된 가스킷이 이용된다.The gasket 30 is a gasket formed of a pressure resistant and heat resistant material.

이와 같은 본 고안은 상부 베어링(10)과 머플러(20) 사이의 틈새를 막기 위해 고온, 고압에 견디는 가스킷(30)이 상부 베어링(10)의 보스부(10a)에 형성한 환상 단턱부(10b)에 재치되도록 삽입되고 머플러(20)의 접촉부, 즉 결합공(21)의 주연부 하면에 의해 밀착되어 머플러(20)와 상부 베어링(10)을 체결하는 볼트(22)에 의해 단단히 고정되어 있으므로 상부 베어링(10)과 머플러(20) 사이의 틈새가 방지된다.The present invention as described above is an annular stepped portion 10b formed in the boss portion 10a of the upper bearing 10 by a gasket 30 to withstand high temperature and high pressure to prevent a gap between the upper bearing 10 and the muffler 20. ) And is tightly fixed by a bolt 22 which is tightly fitted by the contact portion of the muffler 20, that is, by the lower surface of the periphery of the coupling hole 21 and fastens the muffler 20 and the upper bearing 10. The gap between the bearing 10 and the muffler 20 is prevented.

종래의 밀폐형 회전식 압축기는 상부 베어링(메인 베어링)과 머플러의 조립 공차로 인하여 압축 가스가 주위로 방사되어 누설이 발생하기 때문에 소음의 저감 효과가 적은 것이었으나, 본 발명은 상부 베어링과 머플러 사이에 가스킷이 압착되어 틈새가 방지되고 이에 따라 고압의 가스가 상부 베어링과 머플러 사이의 좁은 간격을 통과할 때 발생하는 떨림음을 제거하여 청감음을 개선할 수 있다.Conventional hermetic rotary compressors have less noise reduction effect due to leakage of compressed gas due to the assembly tolerance of the upper bearing (main bearing) and the muffler, but the present invention is a gasket between the upper bearing and the muffler. The compression can be prevented and thus audible noise can be improved by removing the tremors generated when the high-pressure gas passes through the narrow gap between the upper bearing and the muffler.

또, 유체의 방향을 실제 저감시키고자 하는 방향의 토출 홀을 지날 때 다른 방향으로 누설됨을 방지할 수 있는 이점이 있다.In addition, there is an advantage that can prevent the leakage in the other direction when passing through the discharge hole in the direction to actually reduce the direction of the fluid.

또한 상부 베어링과 머플러의 틈새의 상하값에 관계없이 일정한 소음 저감효과를 달성할 수 있는 효과가 있다.In addition, there is an effect that can achieve a constant noise reduction effect regardless of the upper and lower values of the gap between the upper bearing and the muffler.

Claims (3)

밀폐형 회전식 압축기의 밀폐용기의 내부에 설치되는 전동기의 크랭크축을 지지하는 상부 베어링의 보스부와 머플러 사이에 가스킷을 삽입하여 가스의 누설을 방지하도록 구성된 것을 특징으로 하는 밀폐형 회전식 압축기의 소음 저감장치.Noise reduction device of the hermetic rotary compressor characterized in that the gasket is inserted between the boss and the muffler of the upper bearing for supporting the crankshaft of the motor installed in the hermetic container of the hermetic rotary compressor to prevent the leakage of gas. 제 1 항에 있어서, 상기 상부 베어링의 보스부에는 단턱부가 환형으로 형성되고, 이 크랭크축의 보스부에 가스킷이 삽입되어 환상 단턱부에 접촉되며, 상기 머플러의 결합공 주연부에 하면에 의해 압착 고정되어 구성된 것을 특징으로 하는 밀폐형 회전식 압축기의 소음 저감장치.According to claim 1, wherein the boss portion of the upper bearing is formed in a stepped annular shape, a gasket is inserted into the boss portion of the crankshaft to contact the annular stepped portion, and is pressed and fixed by a lower surface to the periphery of the coupling hole of the muffler Noise reduction device of the hermetic rotary compressor, characterized in that configured. 제 1 항 또는 제 2 항에 있어서, 상기 가스킷은 밀폐형 회전식 압축기의 고온, 고압에 견디는 재질로 형성된 가스킷인 것을 특징으로 하는 밀폐형 회전식 압축기의 소음 저감장치.The noise reduction apparatus of claim 1 or 2, wherein the gasket is a gasket formed of a material that withstands high temperature and high pressure of the hermetic rotary compressor.
KR1020030024477A 2003-04-17 2003-04-17 Apparatus reducing noise for hermetic rotary compresser KR20040090338A (en)

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