KR20040097810A - Muffler for hermetic rotary compressor - Google Patents
Muffler for hermetic rotary compressor Download PDFInfo
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- KR20040097810A KR20040097810A KR1020030030286A KR20030030286A KR20040097810A KR 20040097810 A KR20040097810 A KR 20040097810A KR 1020030030286 A KR1020030030286 A KR 1020030030286A KR 20030030286 A KR20030030286 A KR 20030030286A KR 20040097810 A KR20040097810 A KR 20040097810A
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- rotary compressor
- resonator
- hermetic rotary
- noise
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- 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
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- 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
- F04B39/0027—Pulsation and noise damping means
- F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
- F04B39/0061—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using muffler volumes
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- 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
- F04B39/0027—Pulsation and noise damping means
- F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
- F04B39/0066—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using sidebranch resonators, e.g. Helmholtz resonators
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- 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
- F04C29/061—Silencers using overlapping frequencies, e.g. Helmholtz resonators
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- 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
- F04C29/065—Noise dampening volumes, e.g. muffler chambers
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
본 발명은 밀폐형 회전식 압축기용 머플러에 관한 것으로, 특히 밀폐형 회전식 압축기의 머플러 내부에 공명기 구조를 장착함으로써 냉매의 토출시 발생하는 특정 주파수 성분을 감쇄시켜 소음을 저감시킬 수 있도록 한 내부 공명기 구조를 갖는 밀폐형 회전식 압축기용 머플러에 관한 것이다.The present invention relates to a muffler for a hermetic rotary compressor, and more particularly to a hermetically sealed type having an internal resonator structure in which a resonator structure is installed inside the muffler of the hermetic rotary compressor to reduce noise by attenuating specific frequency components generated during discharge of the refrigerant. It relates to a muffler for a rotary compressor.
일반적으로 압축기는 동력생부와 압축기구부의 배치형태에 따라 밀폐형 또는 분리형으로 구분되는데, 그 중 밀폐형 압축기는 밀폐용기 내에 동력발생부 및 압축기구부가 함께 설치되는 형태로, 도 1 및 도 2는 이러한 밀폐형 압축기에서 회전식 압축기의 일례를 보인 종단면도이고, 도 3은 종래 밀폐형 회전식 압축기의 머플러 부분을 보인 평면도이다.Generally, the compressor is classified into a sealed type or a separate type according to the arrangement of the power generating part and the compression mechanism part, among which the closed type compression type is installed together with the power generating part and the compression mechanism part in the sealed container. Figure 3 is a longitudinal sectional view showing an example of a rotary compressor in the compressor, Figure 3 is a plan view showing a muffler portion of a conventional hermetic rotary compressor.
이에 도시된 바와 같이 종래의 밀폐형 회전식 압축기는, 밀폐용기(1)의 내부에 전동기구부인 고정자(2) 및 회전자(3)가 설치되어 있고, 그 중 회전자(3)의 중심에는 회전축(4)이 열박음 등으로 결합되어 있으며, 그 회전축(4)의 하단부에는 압축기구부가 설치되어 있다.As shown therein, the conventional hermetic rotary compressor is provided with a stator 2 and a rotor 3 which are electric motor parts inside the hermetically sealed container 1, among which a rotating shaft ( 4) is coupled by shrinkage, etc., the compression mechanism is provided at the lower end of the rotary shaft (4).
상기 압축기구부는 회전축이 관통되는 환형의 상부 및 하부베어링(5,6)과, 그 상부 및 하부베어링(5,6)의 사이에 양측면이 밀착되어 외주면이 밀폐용기(1)에 고정되고 흡입구(미부호)가 형성되는 환형의 실린더(7)와, 그 실린더(7)내에서 편심회전하도록 상기 회전축(4)에 의해 자전하는 롤링피스톤(8)과, 그 롤링피스톤(8)의 외주면에 결합되어 롤링피스톤(8)의 선회운동시 직선운동을 하면서 실린더(5)를 흡입공간과 압축공간으로 구분하는 베인(미도시)을 포함하여 이루어져 있다.The compressor sphere has both sides of the annular upper and lower bearings 5 and 6 through which the rotating shaft penetrates and between the upper and lower bearings 5 and 6 so that the outer circumferential surface is fixed to the airtight container 1 and the suction port ( An annular cylinder (7) having an unsigned sign, a rolling piston (8) rotated by the rotating shaft (4) so as to eccentrically rotate within the cylinder (7), and an outer peripheral surface of the rolling piston (8). It is made to include a vane (not shown) for dividing the cylinder (5) into the suction space and the compression space while the linear movement during the pivoting movement of the rolling piston (8).
상기 상부베어링(5)의 일측에는 실린더(7)의 압축공간과 연통되는 토출구멍(5a)이 형성되어 있고, 그 토출구멍(5a)의 단부에는 압축가스의 토출을 제한하는 토출밸브(5b) 및 밸브리테이너(5c)가 설치되어 있으며, 상기 상부베어링(5)의 상면에는 상기한 토출구멍(5a)으로부터 토출되는 압축가스의 토출소음을 감쇠시키기 위한 머플러(9)가 설치되어 있다.A discharge hole 5a is formed at one side of the upper bearing 5 to communicate with the compressed space of the cylinder 7, and at the end of the discharge hole 5a, a discharge valve 5b for restricting discharge of compressed gas. And a valve retainer 5c, and a muffler 9 for attenuating the discharge noise of the compressed gas discharged from the discharge hole 5a is provided on the upper surface of the upper bearing 5.
상기 머플러(9)는 협적부와 광적부가 연통된 일정 체적의 공명실이 구비되어 있고, 그 광적부 중에서 상기한 토출구멍(5a)의 맞은편에 위치하는 광적부의 상면에는 압축기구부로부터 압축된 냉매가스를 밀폐용기(1)의 내부로 토출시키기 위한 가스토출공(9a)이 형성되어 있다.The muffler (9) is provided with a resonance chamber having a constant volume in which the narrowing portion and the optical portion communicate with each other, and the refrigerant compressed from the compression mechanism is provided on the upper surface of the optical portion located opposite the discharge hole 5a. A gaseous discharge hole 9a for discharging gas into the sealed container 1 is formed.
또한, 상기 실린더(7)의 일측에는 상부베어링(5)의 토출구멍(5a)으로 압축가스를 유도하는 토출포트(7a)가 홈파기로 형성되어 있고, 그 토출포트(7a)의 단부에는 상부베어링(5)과의 사이에 토출가스의 압력맥동을 저감시키기 위한 공명실(7b)이 형성되어 있다.In addition, a discharge port 7a for inducing compressed gas into the discharge hole 5a of the upper bearing 5 is formed as a groove in one side of the cylinder 7, and an upper portion is formed at the end of the discharge port 7a. The resonance chamber 7b is formed between the bearing 5 and the pressure pulsation of discharge gas.
도면중 미설명 부호인 D는 토출파이프, A는 어큐뮬레이터이다.In the drawings, reference numeral D denotes a discharge pipe, and A denotes an accumulator.
상기와 같이 구성된 종래의 밀폐형 회전식 압축기는 다음과 같이 동작된다.The conventional hermetic rotary compressor configured as described above operates as follows.
즉, 전동기구부에 전원이 공급되어 회전축(4)이 회전을 하게 되면, 냉매가스가 어큐뮬레이터(A)를 거쳐 실린더(7)의 내부로 유입되고, 그 유입된 냉매가스는 베인(미도시)이 상사점에 도달하였을 때에 흡입행정을 개시하여, 상기 회전축(4)과함께 롤링피스톤(8)의 회전운동에 의해 점차 압축되고, 그 압축가스의 압력이 어느 시점에 도달하였을 때 냉매가스는 토출밸브(5b)를 밀면서 토출구멍(5a)을 통해 머플러(9)로 유입되며, 그 머플러(9)로 유입된 압축가스는 다시 밀폐용기(1)의 내부를 지나 토출파이프(D)를 통해 냉동사이클장치로 토출된다.That is, when power is supplied to the electric motor unit and the rotary shaft 4 rotates, the refrigerant gas is introduced into the cylinder 7 through the accumulator A, and the introduced refrigerant gas is a vane (not shown). The suction stroke is started when the top dead center is reached, and is gradually compressed by the rotational movement of the rolling piston 8 together with the rotating shaft 4, and when the pressure of the compressed gas reaches a certain point, the refrigerant gas is discharged to the discharge valve. While pushing (5b) is introduced into the muffler (9) through the discharge hole (5a), the compressed gas introduced into the muffler (9) again passes through the interior of the sealed container 1 through the discharge pipe (D) refrigeration cycle Discharged to the device.
이때, 상기 실린더(7)의 토출포트(7a)를 통과하는 토출가스는 상기한 상부베어링(5)의 토출구멍(5a)으로 유입되기 전에 공명실(7b)로 먼저 유입되어 압력맥동이 감쇠되고, 그 공명실(7b)을 거친 토출가스는 상부베어링(5)의 토출구멍(5a)을 통해 토출밸브(5b)를 밀면서 머플러(9)로 유입되며, 그 머플러(9)로 유입된 토출가스는 머플러(9)의 광적부와 협적부를 지나면서 토출소음 및 밸브타음이 감쇠되어 가스토출공(9a)을 통해 밀폐용기(1)로 토출되는 것이었다.At this time, the discharge gas passing through the discharge port 7a of the cylinder 7 is first introduced into the resonance chamber 7b before flowing into the discharge hole 5a of the upper bearing 5, and the pressure pulsation is attenuated. The discharge gas passing through the resonance chamber 7b flows into the muffler 9 while pushing the discharge valve 5b through the discharge hole 5a of the upper bearing 5, and the discharge gas flowed into the muffler 9 The discharge noise and the valve sound were attenuated while passing through the optical portion and the narrow portion of the muffler 9 and discharged to the closed container 1 through the gaseous discharge hole 9a.
상기한 바와 같은 기존 밀폐형 회전식 압축기의 머플러는 단일 층(Layer) 또는 이중 층의 구조를 갖거나, 내부에 유로 가이드(Guide)를 용접하여 소음을 저감시키는 방식이다. 이러한 종래 머플러의 경우에도 소음저감 효과는 있으나, 특정 주파대역에서 발생하는 소음의 저감 또는 저소음이 요구되는 압축기에서는 추가적인 방법이 요구되었다.The muffler of the conventional hermetic rotary compressor as described above has a structure of a single layer or a double layer, or a method of reducing noise by welding a flow path guide therein. Although the conventional muffler has a noise reduction effect, an additional method has been required in a compressor that requires noise reduction or low noise generated in a specific frequency band.
본 발명은 상기한 바와 같은 종래의 문제점 및 결함을 해소하기 위하여 안출한 것으로, 밀폐형 회전식 압축기의 냉매 토출시 발생하는 여러 가지 소음원의 특정 주파수 성분을 역위상을 이용한 공명기 구조로써 감쇄시켜 압축기에서 발생하는 소음을 저감시킬 수 있게 되는 내부 공명기 구조를 갖는 밀폐형 회전식 압축기용머플러를 제공하고자 함에 목적이 있다.The present invention has been made to solve the above problems and defects as described above, the specific frequency components of various noise sources generated during the refrigerant discharge of the hermetic rotary compressor attenuated by the resonator structure using the reverse phase to generate in the compressor An object of the present invention is to provide a sealed rotary compressor muffler having an internal resonator structure capable of reducing noise.
도 1은 종래 밀폐형 회전식 압축기의 종단면도1 is a longitudinal cross-sectional view of a conventional hermetic rotary compressor.
도 2는 도 1의 부분 확대도.2 is a partially enlarged view of FIG. 1;
도 3은 종래 밀폐형 회전식 압축기의 머플러 부분을 보인 평면도.Figure 3 is a plan view showing a muffler portion of a conventional hermetic rotary compressor.
도 4 내지 도 8은 본 발명에 관한 도면으로서,4 to 8 are views of the present invention,
도 4는 본 발명이 적용된 밀폐형 회전식 압축기의 종단면도.Figure 4 is a longitudinal sectional view of the hermetic rotary compressor to which the present invention is applied.
도 5는 밀폐형 회전식 압축기의 머플러 부분을 보인 평면도.5 is a plan view showing a muffler portion of a hermetic rotary compressor.
도 6은 도 5의 A-A선 단면도.6 is a cross-sectional view taken along the line A-A of FIG.
도 7은 공명기 부분의 음압분포 해석 결과를 보인 도면.7 is a view showing a sound pressure distribution analysis results of the resonator portion.
도 8은 머플러 공명기의 유, 무에 따른 전달손실 분석 결과 그래프.Figure 8 is a graph of the transmission loss analysis results with or without the muffler resonator.
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
1 : 밀폐용기 4 : 회전축1: sealed container 4: rotating shaft
5 : 상부베어링 7 : 실린더5: upper bearing 7: cylinder
10a : 통공 11 : 만곡 십자형 절곡부10a: through hole 11: curved cross-shaped bent portion
12 : 목부 13 : 방부분12: neck 13: room
20 : 포켓형 공명기 21 : 개구부20: pocket type resonator 21: opening
5,6 : 상,하부베어링5,6: Upper and lower bearing
위와 같은 목적을 달성하기 위하여 본 발명에 의한 밀폐형 회전식 압축기용 머플러는 회전축이 관통되는 환형의 상부 및 하부베어링과, 그 상부 및 하부베어링의 사이에 양측면이 밀착되어 외주면이 밀폐용기에 고정되고 흡입구가 형성되는 환형의 실린더가 구비된 밀폐형 회전식 압축기의 상기 상부베어링의 상면에 토출되는 압축가스의 토출소음을 감쇠시키기 위하여 결합되는 머플러에 있어서, 캡형 몸체의 만곡 십자형 절곡부의 일측 목부의 내측 방부분에 중앙 통공을 향하여 트여진 개구부를 가지는 포켓형 공명기가 부착되어 구성된다.In order to achieve the above object, the sealed rotary compressor muffler according to the present invention has an annular upper and lower bearing through which a rotating shaft penetrates, and both sides are in close contact between the upper and lower bearings so that the outer circumferential surface thereof is fixed to the sealed container, In the muffler coupled to attenuate the discharge noise of the compressed gas discharged on the upper surface of the upper bearing of the hermetic rotary compressor with an annular cylinder is formed, the center of the inner side of the neck of one side of the curved cross-shaped bent portion of the cap-shaped body A pocket resonator having an opening opened toward the through hole is attached.
이와 같은 본 발명은 밀폐형 회전식 압축기의 토출시 발생하는 고온고압의 가스가 지니고 있는 소음성분을 저감시켜 전체적인 소음레벨을 감소시킬 수 있게 된다.The present invention can reduce the overall noise level by reducing the noise component of the high-temperature, high-pressure gas generated during the discharge of the hermetic rotary compressor.
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 4 내지 도 8은 본 발명에 관한 도면으로서, 도 4에는 본 발명이 적용된 밀폐형 회전식 압축기의 종단면도가 도시되고, 도 5에는 밀폐형 회전식 압축기의 머플러 부분을 보인 평면도, 도 6에는 도 5의 A-A선 단면도가 각각 도시되어 있으며, 도 7에는 공명기 부분의 음압분포 해석 결과를 보인 도면, 도 8에는 머플러 공명기의 유, 무에 따른 전달손실 분석 결과 그래프가 각각 도시되어 있다.4 to 8 are views of the present invention, Figure 4 is a longitudinal cross-sectional view of the hermetic rotary compressor to which the present invention is applied, Figure 5 is a plan view showing the muffler portion of the hermetic rotary compressor, Figure 6 AA of Figure 5 Line cross-sectional views are shown, respectively, FIG. 7 is a diagram illustrating a sound pressure distribution analysis result of a resonator part, and FIG. 8 is a graph showing a result of transmission loss analysis according to whether a muffler resonator is present or not.
이에 도시된 바와 같이 본 발명이 적용되는 밀폐형 회전식 압축기는, 밀폐용기(1)의 내부에 전동기구부인 고정자(2) 및 회전자(3)가 설치되어 있고, 그 중 회전자(3)의 중심에는 회전축(4)이 열박음 등으로 결합되어 있으며, 그 회전축(4)의 하단부에는 압축기구부가 설치되어 있다.As shown therein, the hermetic rotary compressor to which the present invention is applied includes a stator 2 and a rotor 3, which are electric motor parts, installed inside the hermetic container 1, among which the center of the rotor 3 is located. The rotary shaft 4 is coupled by shrinkage or the like, and a compression mechanism is provided at the lower end of the rotary shaft 4.
상기 압축기구부는 회전축(4)이 관통되는 환형의 상부 및 하부베어링(5,6)과, 그 상부 및 하부베어링(5,6)의 사이에 양측면이 밀착되어 외주면이 밀폐용기(1)에 고정되고 흡입구가 형성되는 환형의 실린더(7)와, 상기 상부베어링(5)의 상면에 토출되는 압축가스의 토출소음을 감쇠시키기 위하여 결합되는 머플러(10)를 포함하여 구성되어 있다.The compressor section has both sides of the annular upper and lower bearings 5 and 6, through which the rotating shaft 4 penetrates, and the upper and lower bearings 5 and 6, so that the outer circumferential surface is fixed to the sealed container 1. And an annular cylinder (7) having a suction port and a muffler (10) coupled to attenuate the discharge noise of the compressed gas discharged on the upper surface of the upper bearing (5).
그리고, 상기 머플러(10)는 캡형 몸체(10')의 십자형 절곡부(11)의 일측 목부(12)의 내측 방부분(13)에 중앙 통공(10a)을 향하여 트여진 개구부(21)를 가지는 포켓형 공명기(20)가 부착된 구성으로 되어 있다.In addition, the muffler 10 has an opening 21 opened toward the central through hole 10a in the inner side portion 13 of one neck 12 of the cross-shaped bent portion 11 of the cap-shaped body 10 '. The pocket resonator 20 is attached.
상기 공명기(20)는 예를 들어 테두리부(22)가 머플러(10) 몸체에 스폿 용접 등으로 부착된다.The resonator 20 is, for example, the edge portion 22 is attached to the muffler 10 body by spot welding or the like.
이와 같은 밀폐형 회전식 압축기용 머플러는 전동기구부에 전원이 공급되어 회전축(4)이 회전을 하게 되면, 냉매가스가 어큐뮬레이터(A)를 거쳐 실린더(7)의 내부로 유입되고, 그 유입된 냉매가스는 베인(미도시)이 상사점에 도달하였을 때에 흡입행정을 개시하여, 상기 회전축(4)과 함께 롤링피스톤(8)의 회전운동에 의해 점차 압축되고, 그 압축가스의 압력이 어느 시점에 도달하였을 때 냉매혼합가스는 실린더(7)의 압축공간에서 머플러(9)로 유입되며, 그 머플러(9)로 유입된 압축가스는 다시 밀폐용기(1)의 내부를 지나 토출파이프(D)를 통해 냉동사이클장치로 토출된다.In the sealed rotary compressor muffler, when power is supplied to the electric mechanism and the rotary shaft 4 rotates, the refrigerant gas flows into the cylinder 7 through the accumulator A, and the introduced refrigerant gas When the vane reaches the top dead center, the suction stroke starts, and is gradually compressed by the rotational movement of the rolling piston 8 together with the rotating shaft 4, and at what point the pressure of the compressed gas reaches At this time, the refrigerant mixed gas flows into the muffler 9 in the compression space of the cylinder 7, and the compressed gas introduced into the muffler 9 passes through the inside of the sealed container 1 again and is frozen through the discharge pipe D. It is discharged to the cycle apparatus.
그리고, 실린더(7)에서 압축된 냉매혼합가스는 머플러(10)를 통과하면서 소음이 저감되는데 본 발명에 의한 머플러(10)는 공명기(20)가 장착되어 있으므로 토출포트를 통해 나온 냉매혼합가스의 대부분은 공명기(20)의 입구측(20a)에서 출구측(20b)으로 직접 흐르고, 일부는 공명기(20)를 돌아 흘러 머플러(10)의 토출구(10b)를 통과하게 된다. 그리고 이 과정에서 공명기(20)의 목부(12) 및 방부분(13)을 지나면서 특정 주파수 성분의 역위상이 발생하여 도 7과 같이 소음이 감쇄된다.The refrigerant mixed gas compressed in the cylinder 7 is reduced while passing through the muffler 10. The muffler 10 according to the present invention is equipped with a resonator 20. Most of them directly flow from the inlet side 20a of the resonator 20 to the outlet side 20b, and part of the resonator 20 flows back through the discharge port 10b of the muffler 10. In this process, a reverse phase of a specific frequency component is generated while passing through the neck portion 12 and the room portion 13 of the resonator 20, and noise is attenuated as shown in FIG.
도 7은 공명기 부분의 음압분포 해석 결과(2900Hz)를 보인 도면이고, 도 8은 머플러(muffler) 공명기의 유, 무에 따른 전달손실(transmission loss) 분석 결과 그래프로서, 상기 냉매혼합가스의 유동은 공명기(20) 부분을 고속으로 통과하는 과정에서 전달 손실이 발생하고, 도 5 및 도 6과 같은 공명기(20)를 갖는 머플러(10)의 경우에는 2900Hz에서 유동을 갖는 주파수 성분의 역위상이 발생하여 소음이 감쇄되는 것으로 분석되었다.FIG. 7 is a diagram illustrating a sound pressure distribution analysis result (2900 Hz) of a resonator part, and FIG. 8 is a graph showing a transmission loss analysis result according to whether a muffler resonator is present or not, and the flow of the refrigerant mixture gas is In the course of passing the resonator 20 at a high speed, a transmission loss occurs, and in the case of the muffler 10 having the resonator 20 as shown in FIGS. 5 and 6, a reverse phase of a frequency component having a flow at 2900 Hz occurs. Noise was attenuated.
이상의 설명에서는 본 발명에 의한 포켓형 공명기는 상부 베어링에 체결된 형태로 예시하여 설명되었으나 상기 포켓형 공명기는 하부 베어링에 체결(서브토출의 경우)될 수도 있으며, 머풀러 공명 형상에 대한 다양한 형태가 추가적으로 실시될 수 있다.In the above description, the pocket-type resonator according to the present invention has been described as an example of being fastened to the upper bearing, but the pocket-type resonator may be fastened to the lower bearing (in case of subdischarge), and various forms of the muffler resonance shape may be additionally performed. Can be.
기존의 밀폐형 회전식 압축기에서는 토출포트로부터 나온 고압의 냉매혼합가스를 단일 또는 이중 머플러 구조를 이용하여 소음을 저감시켜왔으나, 본 발명은 기존 방식의 머플러 내부에 공명기 구조를 삽입함으로써 일반적으로 알려진 머플러의 소음저감대역인 1KHz 내부 대역 뿐 아니라 특정 주파수의 소음을 추가로 저감시켜 전체 소음레벨을 저감시키는 효과를 얻을 수 있다.In the conventional hermetic rotary compressor, the high pressure refrigerant mixture gas discharged from the discharge port has been reduced by using a single or double muffler structure. However, the present invention inserts a resonator structure into a conventional muffler. It is possible to reduce the overall noise level by additionally reducing the noise of a specific frequency as well as the internal 1KHz band.
상기에서는 본 발명의 바람직한 실시 예를 참조하여 설명하였지만, 해당기술 분야의 숙련된 당업자는 하기의 특허청구범위에 기재된 본 발명의 사상 및 영역으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 및 변경시킬 수 있음을 이해할 수 있을 것이다.Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention described in the claims below. It will be appreciated.
Claims (2)
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| KR1020030030286A KR20040097810A (en) | 2003-05-13 | 2003-05-13 | Muffler for hermetic rotary compressor |
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| KR1020030030286A KR20040097810A (en) | 2003-05-13 | 2003-05-13 | Muffler for hermetic rotary compressor |
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| KR20040097810A true KR20040097810A (en) | 2004-11-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088794A (en) * | 2014-07-15 | 2014-10-08 | 珠海凌达压缩机有限公司 | Exhaust device, compressor and air conditioner |
| CN107150184A (en) * | 2017-06-14 | 2017-09-12 | 芜湖三花制冷配件有限公司 | A kind of assembly method of qi leel, oil end cap |
| EP3376035A1 (en) * | 2017-03-15 | 2018-09-19 | LG Electronics Inc. | Rotary compressor |
| EP3848587A1 (en) * | 2020-01-10 | 2021-07-14 | LG Electronics Inc. | Compressor |
-
2003
- 2003-05-13 KR KR1020030030286A patent/KR20040097810A/en not_active Application Discontinuation
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088794A (en) * | 2014-07-15 | 2014-10-08 | 珠海凌达压缩机有限公司 | Exhaust device, compressor and air conditioner |
| EP3376035A1 (en) * | 2017-03-15 | 2018-09-19 | LG Electronics Inc. | Rotary compressor |
| CN108626125A (en) * | 2017-03-15 | 2018-10-09 | Lg电子株式会社 | Rotary compressor |
| US10731650B2 (en) | 2017-03-15 | 2020-08-04 | Lg Electronics Inc. | Rotary compressor |
| CN108626125B (en) * | 2017-03-15 | 2020-09-01 | Lg电子株式会社 | Rotary compressor |
| CN107150184A (en) * | 2017-06-14 | 2017-09-12 | 芜湖三花制冷配件有限公司 | A kind of assembly method of qi leel, oil end cap |
| EP3848587A1 (en) * | 2020-01-10 | 2021-07-14 | LG Electronics Inc. | Compressor |
| US11585344B2 (en) | 2020-01-10 | 2023-02-21 | Lg Electronics Inc. | Compressor provided with a muffler |
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