KR0162439B1 - Suction muffler structure of a hermetic electronical compressor - Google Patents

Suction muffler structure of a hermetic electronical compressor Download PDF

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Publication number
KR0162439B1
KR0162439B1 KR1019950049218A KR19950049218A KR0162439B1 KR 0162439 B1 KR0162439 B1 KR 0162439B1 KR 1019950049218 A KR1019950049218 A KR 1019950049218A KR 19950049218 A KR19950049218 A KR 19950049218A KR 0162439 B1 KR0162439 B1 KR 0162439B1
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South Korea
Prior art keywords
refrigerant
cylinder
compressor
resonance
noise
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KR1019950049218A
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Korean (ko)
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KR970045465A (en
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박경환
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구자홍
엘지전자주식회사
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Publication of KR970045465A publication Critical patent/KR970045465A/en
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    • 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
    • F04B39/0066Pulsation 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
    • 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
    • F04B39/0072Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes characterised by assembly or mounting

Abstract

본 발명은 밀폐형 전동압축기의 흡입소음기구조에 관한 것으로, 실린더내부의 피스톤의 흡입,압축과정에서 발생되는 불규칙적인 유동과 냉매의 흐름에 의해 진동소음을 유발하는 공진의 주 원인인 맥동음을 저감시키는데 불합리한 구조로 되어 있을 뿐만아니라 과대한 공명실과 공동실의 부피로 부품의 간소화를 이루지 못하는 문제점이 있었는 바, 본 발명은 실린더내부로 냉맹의 유입을 안내하는 냉매유로에 달팽이 형상의 공동관 및 공명통을 형성하여 흡입배관계에서 진동소음을 발생시키는 냉매공진의 주 원인인 맥동을 저감시킴으로써 압축기에서 발생되는 소음을 감소시켜 압축기의 신뢰성을 향상시킬 뿐만아니라 부품을 간소화를 시킬 수 있도록 한 것이다.The present invention relates to a suction silencer structure of a hermetic electric compressor, and to reduce the pulsation noise, which is the main cause of the resonance noise caused by the irregular flow and refrigerant flow generated during the suction and compression of the piston inside the cylinder. In addition to the unreasonable structure, there was a problem that the parts of the resonant chamber and the cavity chamber could not be simplified, and thus the present invention provides a snail-shaped cavity tube and a resonance tube to the refrigerant passage that guides the inflow of cold blind into the cylinder. By reducing the pulsation, which is the main cause of the refrigerant resonance to generate vibration noise in the suction piping system, the noise generated from the compressor is reduced, thereby improving the reliability of the compressor and simplifying the parts.

Description

밀폐형 전동압축기의 흡입소음기구조Suction silencer structure of hermetic electric compressor

제1도는 일반적인 밀페형 전동압축기의 구조를 도시한 것으로,1 shows the structure of a general hermetic electric compressor,

(a)는 종단면도.(a) is a longitudinal cross-sectional view.

(b)는 횡단면도.(b) is a cross-sectional view.

제2도는 종래의 밀폐형 전동압축기의 흡입소음기구조를 도시한 평면도.2 is a plan view showing the structure of a suction silencer of a conventional hermetic electric compressor.

제3도는 본 발명의 밀폐형 전동압축기 흡입소음기구조의 일실시예를 도시한 것으로,3 is a view illustrating an embodiment of a sealed electric compressor suction silencer structure of the present invention.

(a)는 부분사시도.(a) is a partial perspective view.

(b)는 단면도.(b) is a cross-sectional view.

제4도는 본 발명의 밀폐형 전동압축기의 흡입소음기구조의 다른 실시예를 도시한 것으로,Figure 4 shows another embodiment of the structure of the suction silencer of the hermetic electric compressor of the present invention,

(a)는 단면도.(a) is a cross-sectional view.

(b)는 부분단면도.(b) is a partial cross-sectional view.

제5도는 본 발명의 밀폐형 전동압축기 흡입소음기구조의 또다른 실시예를 도시한 단면도.5 is a cross-sectional view showing another embodiment of the hermetic electric compressor suction silencer structure of the present invention.

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

10 : 냉매유로 11 : 공동관10: refrigerant flow path 11: common pipe

12 : 공명통12: resonance cylinder

본 발명은 밀폐형 전동압축기의 흡입소음기구조에 관한 것으로, 특히 실린더내부로 냉매의 유입을 안내함과 더불어 발생되는 소음을 감소시키는 흡입소음기의 구조를 개조하여 구조를 간소화하고 발생되는 소음을 보다 최소화시킬 수 있는 밀폐형 전동압축기의 흡입소음기구조에 관한 것이다.The present invention relates to the structure of the suction silencer of the hermetic electric compressor, and in particular, by modifying the structure of the suction silencer to reduce the noise generated while guiding the introduction of refrigerant into the cylinder, thereby simplifying the structure and minimizing the generated noise. It relates to a suction silencer structure of a hermetic sealed electric compressor.

일반적인 밀폐형 전동압축기는, 제1도에 도시한 바와 같이, 압축기의 케이스를 이루는 밀폐용기(1)와, 상기 밀폐용기(1)의 내측에 설치되는 프레임(2)과, 상기 프레임(2)의 하측에 설치되는 고정자(3) 및 회전자(4)와, 상기 회전자(4)의 내경에 결합되고 일측단부에 편심부(5a)가 형성된 크랭크축(5)과, 상기 프레임(2)의 상측에 결합되는 실린더(6)와, 상기 크랭크축(5)의 편심부(5a)에 결합되어 상기 실린더(6)내부를 왕복운동하는 피스톤(7) 등으로 구성되어 있다.A general hermetic electric compressor is, as shown in FIG. 1, a hermetically sealed container 1 that forms a case of a compressor, a frame 2 provided inside the hermetic container 1, and A stator 3 and a rotor 4 installed at a lower side thereof, a crank shaft 5 coupled to an inner diameter of the rotor 4 and having an eccentric portion 5a formed at one end thereof, and the frame 2 It consists of a cylinder 6 coupled to the upper side and a piston 7 coupled to the eccentric portion 5a of the crankshaft 5 and reciprocating inside the cylinder 6.

그리고 상기 실린더(6)단부에는 냉매가스가 실린더(6)로 유입되고 유출되는 실린더헤드부(8)가 설치되어 있다.A cylinder head 8 is provided at the end of the cylinder 6 to allow refrigerant gas to flow into and out of the cylinder 6.

상기한 바와 같은 밀폐형 전동압축기는 고정자(3)에 인가된 전원에 의해 회전자(4)가 회전하게 되면, 회전자(4)와 함께 끼워 맞춰진 크랭크축(5)이 회전하게 되며, 크랭크축(5)의 회전에 의해 크랭크축(5)의 편심부(5a)에 연결된 피스톤(7)이 편심에 의해 실린더(6)내를 왕복운동하게 된다.When the rotor 4 is rotated by the power applied to the stator 3 as described above, the crank shaft 5 fitted together with the rotor 4 rotates, and the crank shaft ( The piston 7 connected to the eccentric portion 5a of the crankshaft 5 by the rotation of 5) reciprocates in the cylinder 6 by the eccentricity.

상기 피스톤(7)의 왕복운동으로 실린더헤드부(8)를 통해 저온저압의 냉매가스가 실린더(6)내부로 유입되고, 유입된 냉매가스는 실린더(6)내에서 고온고압의 냉매가스가 되어 실린더헤드부(8)를 통해 토출된다.Refrigerant gas of low temperature and low pressure flows into the cylinder 6 through the cylinder head 8 by the reciprocating motion of the piston 7, and the introduced refrigerant gas becomes a refrigerant gas of high temperature and high pressure in the cylinder 6. Discharged through the cylinder head 8.

상기 과정에서 피스톤(7)의 흡입과 압축이 반복되면서 냉매 흐름의 불연속성이 발생하게 되고 이때 발생된 불연속적인 냉매흐름 및 그 운동방향이 냉매흐름에 대한 맥동현상을 일으키며 냉미흐름의 반대방향으로 빠져나오게 된다. 이 맥동은 냉매공진의 주원인 인자로 냉매체적의 고유진동수를 여기시켜 압력변화를 유발시키며 이 압력변화는 압력파를 발생시켜 밀폐용기(1)내에서 외부로 방사되면서 소음을 발생시키게 된다.In the above process, the intake and compression of the piston 7 are repeated, resulting in discontinuity of the refrigerant flow, and the discontinuous refrigerant flow and the direction of movement of the piston 7 cause pulsation of the refrigerant flow and exit in the opposite direction of the cold rice flow. do. This pulsation causes a change in pressure by excitation of the natural frequency of the refrigerant volume as a main factor of the refrigerant resonance, and this pressure change generates a pressure wave and radiates to the outside in the sealed container 1 to generate noise.

상기 구조에서 실린더(6)내부에서 발생되는 냉매의 맥동을 감소시킬뿐만아니라 실린더(6)내부로 냉매유입을 안내하기 위하여 실린더헤드부(8)에 흡입소음기(9)를 설치하게 되며 종래의 흡입소음기(9) 구조는 다음과 같다.In this structure, in addition to reducing the pulsation of the refrigerant generated in the cylinder (6) as well as to install the suction silencer (9) in the cylinder head portion (8) to guide the refrigerant flow into the cylinder (6) The silencer 9 structure is as follows.

종래의 밀폐형 전동압축기의 흡입소음기 구조는, 제2도에 도시한 바와 같이, 가운데 격벽(9a)에 의해 일정공간을 이루는 공동실(9b)과 공명실(9c)이 형성되고, 상기 공동실(9b)의 일측에 냉매가 유입되는 유입구(9d)가 형성되며, 상기 공명실(9c)의 일측에 실린더(6)내부와 연결되는 유출구(9e)가 형성되고, 격벽(9a)에는 관통공(9f)이 형성되어 연결유로관(9g)이 삽입되어 있다.In the structure of the suction silencer of the conventional hermetic electric compressor, as shown in FIG. 2, the cavity 9b and the resonance chamber 9c which form a certain space by the middle partition 9a are formed, and the said cavity ( An inlet (9d) through which the refrigerant flows is formed on one side of 9b), an outlet (9e) connected to the inside of the cylinder (6) is formed on one side of the resonance chamber (9c), the through-hole (b) in the partition (9a) 9f) is formed and the connecting flow path tube 9g is inserted.

상기한 바와 같은 흡입소음기(9)는 실린더(6)내의 피스톤의 왕복운동에 의해 냉매를 유입구(9d) - 연결유로관(9g) - 유출구(9e)를 통해 실린더(6)내부로 유입하도록 안내하며 실린더(6)내에서 발생되는 진동소음은 공동실(9b)과 공명실(9c)에 의해 감소시키게 된다.The suction silencer 9 as described above guides the refrigerant into the cylinder 6 through the inlet 9d-the connecting channel 9g-the outlet 9e by the reciprocating motion of the piston in the cylinder 6. The vibration noise generated in the cylinder 6 is reduced by the cavity 9b and the resonance chamber 9c.

그러나 상기한 바와 같은 종래의 흡입소음기구조는 발생되는 맥동음을 저감시키는데 불합리한 구조로 되어 있을 뿐만아니라 과대한 공명실(9c)과 공동실(9b)의 부피로 부품의 콤팩트화를 이루지 못하는 문제점이 있었다.However, the conventional suction silencer structure as described above is not only an irrational structure for reducing the pulsation noise generated, but also a problem that the compactness of parts is not achieved by the volume of the excessive resonance chamber 9c and the cavity chamber 9b. there was.

따라서 본 발명의 목적은 실린더내부로 냉매의 유입을 안내함과 더불어 발생되는 소음을 감소시키는 흡입소음기의 구조를 개조하여 구조를 간소화하고 발생되는 소음을 보다 최소화시킬 수 있는 밀폐형 전동압축기의 흡입소음기구조를 제공함에 있다.Accordingly, an object of the present invention is to improve the structure of the suction silencer to reduce the noise generated by guiding the inflow of the refrigerant into the cylinder to simplify the structure and to minimize the noise generated by the suction silencer structure of the sealed electric compressor In providing.

상기한 바와 같은 본 발명의 목적을 달성하기 위하여 실린더내부로 냉매의 유입을 안내하는 냉매유로에 달팽이 형상의 공동관을 수개 형성함을 특징으로 하는 밀폐형 전동압축기의 흡입소음기구조가 제공된다.In order to achieve the object of the present invention as described above, there is provided a suction silencer structure of a hermetic electric compressor, characterized in that a plurality of snail-shaped hollow tubes are formed in the refrigerant passage for guiding the introduction of the refrigerant into the cylinder.

또한 본 발명의 목적을 달성하기 위하여 실린더내부로 냉매의 유입을 안내하는 냉매유로에 유로를 확관한 공명통을 수개 형성함을 특징으로 하는 밀폐형 전동압축기의 흡입소음기구조가 제공된다.In addition, in order to achieve the object of the present invention, there is provided a suction silencer structure of a hermetic electric compressor, characterized in that a plurality of resonance cylinders are formed in the refrigerant passage for guiding the introduction of the refrigerant into the cylinder.

이하 본 발명의 밀폐형 전동압축기의 흡입소음기구조를 첨부도면에 도시한 실시예에 따라 설명하면 다음과 같다.Hereinafter, the suction silencer structure of the hermetic electric compressor of the present invention will be described according to the embodiment shown in the accompanying drawings.

본 발명의 밀폐형 전동압축기의 흡입소음기구조는, 제3도에 도시한 바와 같이, 실린더(6)내부로 냉매의 유입을 안내하는 냉매유로(10)에 발생되는 맥동을 저감하는 달팽이 형상의 공동관(11)을 수개 형성한다.In the suction silencer structure of the hermetic electric compressor of the present invention, as shown in FIG. 3, a snail-shaped cavity tube which reduces pulsation generated in the refrigerant passage 10 for guiding the introduction of the refrigerant into the cylinder 6 is shown. Several (11) are formed.

상기 달팽이 형상의 공동관(11)은 나선형으로 형성할 수 도 있다.The snail-shaped cavity tube 11 may be formed spirally.

본 발명의 다른 실시예로서, 제4도에 도시한 바와 같이, 실린더(6) 내부로 냉매의 유입을 안내하는 냉매유로(10)에 유로의 단면보다 더크게 단면을 확관한 공명통(12)을 수개 형성한다.As another embodiment of the present invention, as shown in FIG. 4, the resonance passage 12 extending the cross section larger than the cross section of the flow path in the refrigerant passage 10 for guiding the inflow of the refrigerant into the cylinder 6 is provided. Form several.

또한 본 발명의 또다른 실시예로서, 제5도에 도시한 바와 같이, 실린더(6)내부로 냉매의 유입을 안내하는 냉매유로(10)에 달팽이 형상의 공동관(11)과 유로를 확관한 공명통(12)을 각각 같이 형성한다.In addition, as another embodiment of the present invention, as shown in FIG. 5, the snail-shaped cavity tube 11 and the flow path are expanded in the refrigerant passage 10 for guiding the introduction of the refrigerant into the cylinder 6. The resonance cylinders 12 are formed together, respectively.

상기한 바와 같은 본 발명의 밀폐형 전동압축기 흡입소음기구조의 작용효과를 설명하면 다음과 같다.Referring to the operation and effect of the sealed electric compressor suction silencer structure of the present invention as described above are as follows.

본 발명의 밀폐형 전동압축기 흡입소음기구조는 상기 냉매유로(10)를 포함한 흡입배관계로부터 발생되어 나오는 맥동원은 달팽이 형상의 공동관(11)에 유입되면서 맥동이 상쇄되어 소음발생원인인 맥동을 감소시키게 됨으로써 소음을 저감하게 된다. 또한 피스톤의 왕복운동에 의한 냉매의 불연속적인 유동현상은 공명통(12)에 의해 완화되어 불연속적인 운동에 의한 냉매흐름의 충돌을 억제하게 됨으로써 토출되는 맥동원을 감소시킬 뿐만아니라 흡입되는 냉매가스가 가지고 있는 운동에너지와 실린더(6)내부의 피스톤에 의한 왕복압축의 운동역전시에 발생되는 순간적인 냉매흐름의 정지상태와의 충돌에 의해 발생되는 충격력에 의한 맥동을 완화시켜 발생되는 소음을 감소시킬 수 있다.In the sealed electric compressor suction silencer structure of the present invention, the pulsation source generated from the suction piping system including the refrigerant passage 10 is introduced into the snail-shaped cavity tube 11 to cancel the pulsation to reduce the pulsation that is the cause of noise. This reduces noise. In addition, the discontinuous flow phenomenon of the refrigerant caused by the reciprocating motion of the piston is alleviated by the resonance cylinder 12 to suppress the collision of the refrigerant flow due to the discontinuous movement, thereby reducing the pulsation source discharged and having the refrigerant gas sucked in. Noise generated by the impact force generated by the collision between the kinetic energy of the reciprocating compression and the momentary state of the refrigerant flow generated during the reversal of the reciprocating compression by the piston inside the cylinder 6 can be reduced. have.

상기한 바와 같이 본 발명은 실린더(6)내부로 냉매의 유입을 안내하는 냉매유로(10)에 달팽이 형상의 공동관(11) 및 공명통(12)을 형성하여 흡입배관계에서 진동소음을 발생시키는 냉매공진의 주 원인인 맥동을 저감시킴으로써 압축기에서 발생되는 소음을 감소시킬 수 있어 압축기의 신뢰성을 향상시킬 수 있는 효과가 있다.As described above, the present invention forms a snail-shaped cavity tube 11 and a resonance cylinder 12 in the refrigerant passage 10 for guiding the introduction of the refrigerant into the cylinder 6 to generate vibration noise in the suction piping system. By reducing the pulsation which is the main cause of resonance, noise generated in the compressor can be reduced, thereby improving the reliability of the compressor.

또한 공동관(11) 및 공명통(12)은 작은 형상으로 형성하여 소음을 저감할 수 있어 부품의 간소화를 이룰 수 있는 효과가 있다.In addition, the cavity 11 and the resonance cylinder 12 is formed in a small shape to reduce the noise there is an effect that can simplify the parts.

Claims (2)

실린더내부로 냉매의 유입을 안내하는 냉매유로에 달팽이 형상의 공동관을 수개 형성함을 특징으로 하는 밀폐형 전동압축기의 흡입소음기구조.A suction silencer structure of a hermetic electric compressor, characterized in that a plurality of snail-shaped hollow tubes are formed in the refrigerant passage for guiding refrigerant into the cylinder. 실린더내부로 냉매의 유입을 안내하는 냉매유로에 유로를 확관한 공명통을 수개 형성함을 특징으로 하는 밀폐형 전동압축기의 흡입소음기구조.A suction silencer structure of a hermetic electric compressor, characterized in that a plurality of resonance cylinders are formed in the refrigerant passage for guiding the introduction of refrigerant into the cylinder.
KR1019950049218A 1995-12-13 1995-12-13 Suction muffler structure of a hermetic electronical compressor KR0162439B1 (en)

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