KR20050040427A - Structure for reducing vibration rotary compressor - Google Patents

Structure for reducing vibration rotary compressor Download PDF

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Publication number
KR20050040427A
KR20050040427A KR1020030075622A KR20030075622A KR20050040427A KR 20050040427 A KR20050040427 A KR 20050040427A KR 1020030075622 A KR1020030075622 A KR 1020030075622A KR 20030075622 A KR20030075622 A KR 20030075622A KR 20050040427 A KR20050040427 A KR 20050040427A
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KR
South Korea
Prior art keywords
rotary compressor
rolling piston
eccentric portion
cylinder
eccentric
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KR1020030075622A
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Korean (ko)
Inventor
이재열
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엘지전자 주식회사
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Priority to KR1020030075622A priority Critical patent/KR20050040427A/en
Publication of KR20050040427A publication Critical patent/KR20050040427A/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
    • 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
    • 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
    • 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
    • F04C29/068—Silencing the silencing means being arranged inside the pump housing

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

Abstract

본 발명은 로터리 압축기의 진동 저감 구조에 관한 것으로, 본 발명은 전동모터의 회전축 일측에는 편심부를 형성하고, 실린더의 내부에서 편심부에 롤링피스톤을 삽입하며, 롤링피스톤의 선회운동을 따라 반경방향으로 직선운동을 하는 베인을 상기 롤링피스톤의 외주면에 압접시켜 실린더의 흡입구와 토출구 사이에 배치하는 로터리 압축기에 있어서, 편심부에 살빼기부를 형성함으로써, 회전축의 편하중을 낮춰 비틀림모멘트를 줄이고 이를 통해 압축기의 진동을 저감시켜 신뢰성을 높일 수 있다. The present invention relates to a vibration reduction structure of a rotary compressor, the present invention forms an eccentric portion on one side of the rotating shaft of the electric motor, insert the rolling piston into the eccentric portion in the cylinder, and radially along the rotational movement of the rolling piston In a rotary compressor in which a linear motion vane is pressed against the outer circumferential surface of the rolling piston and disposed between the inlet and the outlet of the cylinder, by forming a lean portion at the eccentric, thereby reducing the torsional moment by reducing the axial load of the compressor. Reliability can be improved by reducing vibration.

Description

로터리 압축기의 진동 저감 구조{STRUCTURE FOR REDUCING VIBRATION ROTARY COMPRESSOR}STRUCTURE FOR REDUCING VIBRATION ROTARY COMPRESSOR}

본 발명은 로터리 압축기의 회전축에 관한 것으로, 특히 회전축의 편심부 무게를 줄여 진동을 낮추고자 하는 로터리 압축기의 진동 저감 구조에 관한 것이다.The present invention relates to a rotary shaft of a rotary compressor, and more particularly to a vibration reduction structure of a rotary compressor to reduce the vibration by reducing the weight of the eccentric portion of the rotary shaft.

일반적으로 에어컨에 적용되는 로터리 압축기는 회전축에 롤링피스톤을 편심지게 결합하고, 이 롤링피스톤은 원형 실린더에 선접촉시켜 선회운동을 시키는 동시에 롤링피스톤의 선회운동에 따라 반경방향으로 왕복운동을 하는 베인을 상기한 롤링피스톤의 외주면에 압접시켜 냉매가스를 압축하는 것이다.In general, a rotary compressor applied to an air conditioner eccentrically couples a rolling piston to a rotating shaft, and the rolling piston rotates in contact with a circular cylinder to make a pivotal movement, and at the same time, a vane that reciprocates in a radial direction according to the rolling movement of the rolling piston. Compressing the refrigerant gas by pressing the outer peripheral surface of the rolling piston.

도 1은 종래 로터리 압축기의 일례를 보인 종단면도이고, 도 2는 도 1의 "Ⅰ-Ⅰ"선단면도이다.1 is a longitudinal cross-sectional view showing an example of a conventional rotary compressor, Figure 2 is a "I-I" front cross-sectional view of FIG.

이에 도시한 바와 같이 종래의 로터리 압축기는, 소정량의 오일을 채우고 가스흡입관(SP)과 가스토출관(DP)을 연통 설치하는 케이싱(1)과, 케이싱(1)의 상측에 설치하여 회전력을 발생하는 전동기구부와, 케이싱(1)의 하측에 설치하여 상기 전동기구부에서 발생한 회전력으로 냉매를 압축하는 압축기구부로 구성하고 있다.As shown in the drawing, a conventional rotary compressor is provided with a casing (1) for filling a predetermined amount of oil and communicating a gas suction pipe (SP) and a gas discharge pipe (DP) with an upper side of the casing (1). And a compressor mechanism that is provided below the casing 1 and that compresses the refrigerant by the rotational force generated by the power mechanism.

전동구동부는 케이싱(1)의 내부에 고정하여 외부에서 전원을 인가하는 고정자(Ms)와, 고정자(Ms)의 내부에 일정 공극을 두고 배치하여 상기한 고정자(Ms)와 상호 작용하면서 회전하는 회전자(Mr)로 이루어져 있다.The electric drive unit rotates while interacting with the stator Ms by fixing the inside of the casing 1 to stator Ms for applying power from the outside, and having a predetermined gap inside the stator Ms. It consists of electrons (Mr).

압축기구부는 환형으로 형성하여 케이싱(1)의 내부에 설치하는 본체실린더(2)와, 본체실린더(2)의 상하 양측을 복개하여 함께 실린더를 이루는 메인베어링(3) 및 서브베어링(4)과, 회전자(2)에 압입하고 메인베어링(3)과 서브베어링(4)에 지지되어 회전력을 전달하는 회전축(5)과, 회전축(5)의 편심부에 회전 가능하게 결합하여 본체실린더(2)의 내부공간에서 선회하면서 냉매를 압축하는 롤링피스톤(6)과, 롤링피스톤(6)의 외주면에 압접하도록 본체실린더(2)에 반경방향으로 이동 가능하게 결합하여 상기 본체실린더(2)의 내부공간을 흡입실과 압축실로 구획하는 베인(미도시)과, 메인베어링(3)의 중앙부근에 구비한 토출포트(3a) 선단에 개폐 가능하게 결합하여 압축실에서 토출되는 냉매가스를 제한하는 토출밸브 조립체(7)와, 토출밸브 조립체(7)를 수용하도록 공명실을 구비하여 메인베어링(3)의 외측면에 설치하는 머플러(8)로 이루어져 있다.Compressor part is formed in an annular shape and the main cylinder (2) and the main bearing (3) and the sub-bearing (4) which covers the upper and lower sides of the main cylinder (2) to be installed inside the casing (1) and together form a cylinder together; , The rotary shaft 5 which is press-fitted to the rotor 2 and supported by the main bearing 3 and the sub-bearing 4 to transmit rotational force, and rotatably coupled to an eccentric portion of the rotary shaft 5 so that the main body cylinder 2 The rolling piston 6 which compresses the refrigerant while turning in the inner space of the c) and a radially movably coupled to the body cylinder 2 so as to be press-contacted to the outer circumferential surface of the rolling piston 6 to form an inner portion of the body cylinder 2. A discharge valve for restricting the refrigerant gas discharged from the compression chamber by coupling the vane (not shown) for dividing the space into the suction chamber and the compression chamber, and the opening and closing at the tip of the discharge port 3a provided near the center of the main bearing 3. To receive the assembly (7) and the discharge valve assembly (7). It consists of a muffler (8) provided with a resonance chamber and installed on the outer surface of the main bearing (3).

회전축(5)은 상반부는 전동기구부의 회전자에 압입하고 하반부는 압축기구부에 결합하여 상기 메인베어링(3)과 서브베어링(4)에 축방향과 반경방향으로 지지되는 축부(5A)와, 축부(5A)의 하반부에 편심지게 형성하여 상기한 롤링피스톤(6)을 삽입하는 편심부(5B)로 이루어져 있다.The rotating shaft 5 is press-fitted into the rotor of the electric mechanism part, the lower part is coupled to the compression mechanism part, the shaft part 5A supported by the main bearing 3 and the sub bearing 4 in the axial direction and the radial direction, and the shaft part. It consists of the eccentric part 5B which forms eccentrically in the lower half of 5A, and inserts the rolling piston 6 mentioned above.

축부(5A)는 그 중앙에 축방향으로 오일유로(5a)를 형성하고, 편심부(5B)는 도 2 및 도 3에서와 같이 속찬 원기둥 모양으로 형성하고 있다.The shaft portion 5A forms an oil flow passage 5a in the axial direction at the center thereof, and the eccentric portion 5B is formed in a cylindrical shape as shown in FIGS. 2 and 3.

도면중 미설명 부호인 8a는 토출공이다.In the figure, reference numeral 8a denotes a discharge hole.

상기와 같은 종래의 로터리 압축기는 다음과 같이 동작한다.The conventional rotary compressor as described above operates as follows.

즉, 전동기구부의 고정자(Ms)에 전원을 인가하여 회전자(Mr)가 회전하면, 압축기구부의 회전축(5)이 회전자(Mr)와 함께 회전하고, 롤링피스톤(6)이 실린더의 내부공간에서 편심 회전하며, 롤링피스톤(6)의 편심 회전에 따라 냉매가스가 실린더의 흡입실로 흡입되어 일정압력까지 지속적으로 압축되다가 실린더의 압축실 압력이 케이싱(1)내의 압력보다 고압이 되는 순간 메인베어링(3)의 토출포트(3a)와 머플러(8)를 통해 케이싱(1)으로 토출되는 일련의 과정을 반복한다.That is, when the rotor (Mr) is rotated by applying power to the stator (Ms) of the electric mechanism portion, the rotary shaft (5) of the compression mechanism portion rotates together with the rotor (Mr), the rolling piston (6) inside the cylinder Eccentric rotation in space, the refrigerant gas is sucked into the suction chamber of the cylinder in accordance with the eccentric rotation of the rolling piston (6) continuously compressed to a certain pressure, the moment the compression chamber pressure of the cylinder becomes higher than the pressure in the casing (1) A series of processes that are discharged to the casing 1 through the discharge port 3a and the muffler 8 of the bearing 3 is repeated.

이때, 회전축(5)의 축부(5A)는 메인베어링(3)과 서브베어링(4)의 레이디얼베어링부에 반경방향으로 지지되는 동시에 스러스트베어링부에 축방향으로 지지되어 회전운동을 하는 것이었다.At this time, the shaft portion 5A of the rotary shaft 5 was radially supported by the radial bearing portions of the main bearing 3 and the sub-bearing 4 at the same time and axially supported by the thrust bearing portion to perform the rotational movement.

그러나, 상기와 같은 종래 로터리 압축기에 있어서는, 회전축(5)의 하단에 편심부(5B)가 형성됨에 따라 편하중에 의한 비틀림모멘트가 발생하고 이로 인해 회전자(Mr)와 회전축(5)을 포함하는 회전체가 선회운동을 하면서 압축기 진동을 유발하는 문제점이 있었다.However, in the conventional rotary compressor as described above, as the eccentric portion 5B is formed at the lower end of the rotary shaft 5, a torsional moment due to the eccentric load is generated, thereby including the rotor Mr and the rotary shaft 5. There was a problem that causes the vibration of the compressor while the rotor rotates.

본 발명은 상기와 같은 종래 로터리 압축기가 가지는 문제점을 감안하여 안출한 것으로, 회전축의 편심부 무게를 줄여 회전체의 선회운동 반경을 작게 하여 압축기 진동을 저감시킬 수 있는 로터리 압축기의 진동 저감 구조를 제공하려는데 본 발명의 목적이 있다.The present invention has been made in view of the problems of the conventional rotary compressor as described above, by reducing the eccentric portion of the rotating shaft to provide a vibration reducing structure of the rotary compressor that can reduce the compressor vibration by reducing the rotational radius of the rotating body. It is an object of the present invention.

본 발명의 목적을 달성하기 위하여, 전동모터의 회전축 일측에는 편심부를 형성하고, 실린더의 내부에서 편심부에 롤링피스톤을 삽입하며, 롤링피스톤의 선회운동을 따라 반경방향으로 직선운동을 하는 베인을 상기 롤링피스톤의 외주면에 압접시켜 실린더의 흡입구와 토출구 사이에 배치하는 로터리 압축기에 있어서, 편심부에 살빼기부를 형성하는 것을 특징으로 하는 로터리 압축기의 진동 저감 구조를 제공한다.In order to achieve the object of the present invention, the eccentric portion is formed on one side of the rotating shaft of the electric motor, the rolling piston is inserted into the eccentric portion in the interior of the cylinder, the vane for linear linear movement in the radial direction along the rolling movement of the rolling piston A rotary compressor, which is pressed against an outer circumferential surface of a rolling piston and disposed between a suction port and a discharge port of a cylinder, provides a vibration reduction structure of a rotary compressor, wherein a weight loss portion is formed in the eccentric portion.

이하, 본 발명에 의한 밀폐형 압축기의 진동 저감 구조를 첨부도면에 도시한 일실시예에 의거하여 상세하게 설명한다.Hereinafter, the vibration reduction structure of the hermetic compressor according to the present invention will be described in detail with reference to the embodiment shown in the accompanying drawings.

도 4는 본 발명 로터리 압축기의 일례를 보인 종단면도이고, 도 5는 도 1의 "B"부를 보인 종단면도이며, 도 6은 본 발명 로터리 압축기의 회전축을 상단에서 보인 평면도이고, 도 7 및 도 8은 본 발명 로터리 압축기의 회전축에 대한 변형예를 상단에서 보인 평면도 및 측면에서 일부를 보인 종단면도이다.Figure 4 is a longitudinal sectional view showing an example of the rotary compressor of the present invention, Figure 5 is a longitudinal sectional view showing a "B" part of Figure 1, Figure 6 is a plan view showing a rotating shaft of the rotary compressor of the present invention from the top, Figure 7 and Figure 8 is a plan view showing a modification of the rotary shaft of the rotary compressor of the present invention from the top and a longitudinal cross-sectional view showing a part from the side.

이에 도시한 바와 같이 본 발명에 의한 로터리 압축기는, 소정량의 오일을 채우고 가스흡입관(SP)과 가스토출관(DP)을 연통 설치하는 케이싱(1)과, 케이싱(1)의 상측에 설치하여 회전력을 발생하는 전동기구부와, 케이싱(1)의 하측에 설치하여 상기 전동기구부에서 발생한 회전력으로 냉매를 압축하는 압축기구부로 구성한다.As shown in the drawing, the rotary compressor according to the present invention includes a casing 1 for filling a predetermined amount of oil and communicating a gas suction pipe SP and a gas discharge pipe DP with an upper side of the casing 1. And a compressor mechanism for compressing the refrigerant by the rotational force generated by the power mechanism and provided at the lower side of the casing 1.

전동구동부는 케이싱(1)의 내부에 고정하여 외부에서 전원을 인가하는 고정자(Ms)와, 고정자(Ms)의 내부에 일정 공극을 두고 배치하여 상기한 고정자(Ms)와 상호 작용하면서 회전하는 회전자(Mr)로 이루어진다.The electric drive unit rotates while interacting with the stator Ms by fixing the inside of the casing 1 to stator Ms for applying power from the outside, and having a predetermined gap inside the stator Ms. It consists of electrons (Mr).

압축기구부는 환형으로 형성하여 케이싱(1)의 내부에 설치하는 본체실린더(2)와, 본체실린더(2)의 상하 양측을 복개하여 함께 실린더를 이루는 메인베어링(3) 및 서브베어링(4)과, 회전자(2)에 압입하고 메인베어링(3)과 서브베어링(4)에 지지되어 회전력을 전달하는 회전축(10)과, 회전축(10)의 편심부(12)에 회전 가능하게 결합하여 본체실린더(2)의 내부공간에서 선회하면서 냉매를 압축하는 롤링피스톤(6)과, 롤링피스톤(6)의 외주면에 압접하도록 본체실린더(2)에 반경방향으로 이동 가능하게 결합하여 상기 본체실린더(2)의 내부공간을 흡입실과 압축실로 구획하는 베인(미도시)과, 메인베어링(3)의 중앙부근에 구비한 토출포트(3a) 선단에 개폐 가능하게 결합하여 압축실에서 토출되는 냉매가스를 제한하는 토출밸브 조립체(7)와, 토출밸브 조립체(7)를 수용하도록 공명실을 구비하여 메인베어링(3)의 외측면에 설치하는 머플러(8)로 이루어진다.Compressor part is formed in an annular shape and the main cylinder (2) and the main bearing (3) and the sub-bearing (4) which covers the upper and lower sides of the main cylinder (2) to be installed inside the casing (1) and together form a cylinder together; , Rotatably coupled to the rotor shaft 2 and supported by the main bearing 3 and the sub bearing 4 to transmit rotational force, and to the eccentric portion 12 of the rotation shaft 10 to be rotatably coupled to the main body. The rolling piston 6 which compresses the refrigerant while turning in the inner space of the cylinder 2 and the main body cylinder 2 are movably coupled radially to the main cylinder 2 so as to be press-contacted to the outer circumferential surface of the rolling piston 6. And a vane (not shown) for dividing the internal space of the inner space into a suction chamber and a compression chamber, and coupled to the tip of the discharge port 3a provided near the center of the main bearing 3 so as to be open and close to limit the refrigerant gas discharged from the compression chamber. The discharge valve assembly 7 and the discharge valve assembly 7 It is composed of a muffler (8) which is provided on the outer surface of the main bearing (3) having a resonant chamber.

회전축(10)은 상반부는 전동기구부의 회전자(Mr)에 압입하고 하반부는 압축기구부에 결합하여 상기 메인베어링(3)과 서브베어링(4)에 축방향과 반경방향으로 지지되는 축부(11)와, 축부(11)의 하반부에 편심지게 형성하여 상기한 롤링피스톤(6)을 삽입하는 편심부(12)로 이루어진다.The rotating shaft 10 is press-fitted into the rotor (Mr) of the electric mechanism part and the lower half is coupled to the compression mechanism part and the shaft part 11 which is supported in the axial direction and the radial direction to the main bearing 3 and the sub-bearing 4. And an eccentric portion 12 formed eccentrically in the lower half of the shaft portion 11 to insert the rolling piston 6 described above.

축부(11)의 중앙에는 케이싱(1)의 오일을 상단까지 흡상하는 오일유로(11a)를 축방향으로 길게 형성한다.In the center of the shaft portion 11, an oil passage 11a for sucking up the oil of the casing 1 to the upper end is formed long in the axial direction.

편심부(12)는 속찬 원기둥 모양으로 형성하되, 이 편심부(12)의 무게를 줄일 수 있도록 도 5 및 도 6에서와 같이 수 개(도면에선 3개)의 살빼기구멍(12a)을 관통 형성하거나 도 7에서와 같이 편심부(12)의 상하 양측면에 살빼기홈(12b)을 음형지게 형성할 수 있다.The eccentric part 12 is formed in a cylindrical shape, but through the several (three in the drawing) fat hole 12a through as shown in Figures 5 and 6 so as to reduce the weight of the eccentric portion 12 Or as shown in Figure 7 can be formed in a negative shape groove 12b on the upper and lower sides of the eccentric portion 12.

여기서, 살빼기구멍(12a)이나 살빼기홈(12b)은 한 개만 형성할 수도 있는데, 이 경우에는 살빼기구멍(12a)이나 살빼기홈(12b)을 편심부(12)의 평면형상에 따라 초생달 모양으로 형성하는 것이 바람직하다.Here, only one of the fat loss hole 12a or the fat loss groove 12b may be formed. In this case, the fat loss hole 12a or the fat loss groove 12b is formed in the crescent shape according to the planar shape of the eccentric part 12. It is desirable to.

도면중 종래와 동일한 부분에 대하여는 동일한 부호를 부여하였다.In the drawings, the same reference numerals are given to the same parts as in the prior art.

도면중 미설명 부호인 8a는 토출공이다.In the figure, reference numeral 8a denotes a discharge hole.

상기와 같은 본 발명 회전축을 구비한 로터리 압축기의 작용 효과는 다음과 같다.Effects of the rotary compressor having a rotary shaft of the present invention as described above are as follows.

즉, 전동기구부의 고정자(Ms)에 전원을 인가하여 회전자(Mr)가 회전하면, 압축기구부의 회전축(10)이 회전자(Mr)와 함께 회전하고, 롤링피스톤(6)이 실린더의 내부공간에서 편심 회전하며, 롤링피스톤(6)의 편심 회전에 따라 냉매가스가 실린더의 흡입실로 흡입되어 일정압력까지 지속적으로 압축되다가 실린더의 압축실 압력이 케이싱(1)내의 압력보다 고압이 되는 순간 토출포트(3a)와 머플러(8)를 통해 토출되는 일련의 과정을 반복한다.That is, when the rotor (Mr) is rotated by applying power to the stator (Ms) of the electric mechanism portion, the rotary shaft 10 of the compression mechanism portion rotates together with the rotor (Mr), the rolling piston (6) inside the cylinder Eccentric rotation in the space, the refrigerant gas is sucked into the suction chamber of the cylinder in accordance with the eccentric rotation of the rolling piston (6) is continuously compressed to a certain pressure, discharged when the compression chamber pressure of the cylinder becomes higher than the pressure in the casing (1) A series of processes discharged through the port 3a and the muffler 8 is repeated.

이때, 회전축(10)은 축부(11)가 메인베어링(3)과 서브베어링(4)에 의해 축방향과 반경방향으로 지지되어 회전하게 되고 편심부(12)는 축부(11)를 중심으로 롤링피스톤(6)과 함께 선회운동을 하게 되는데, 편심부(12)에 도 4 내지 도 6에서와 같이 살빼기구멍(12a)이나 또는 도 7에서와 같이 살빼기홈(12b)을 형성하는 경우에는 편심부(12)의 선회반경은 그대로 유지하면서 편심부(12)의 무게를 줄여 편하중을 낮출 수 있고 이를 통해 회전축(10)의 비틀림모멘트를 낮춰 선회반경을 줄임으로써 압축기의 진동을 저감시킬 수 있다.At this time, the rotating shaft 10 is rotated while the shaft portion 11 is supported in the axial direction and the radial direction by the main bearing (3) and the sub-bearing (4) and the eccentric portion (12) is rolling around the shaft portion (11) The piston 6 is pivoted together with the eccentric part, in which the eccentric part 12 forms the fat loss hole 12a as shown in FIGS. 4 to 6 or the fat loss groove 12b as shown in FIG. 7. While maintaining the turning radius of (12), it is possible to reduce the weight of the eccentric portion 12 to reduce the eccentric load, thereby reducing the turning radius of the rotating shaft 10, thereby reducing the turning radius of the compressor.

본 발명에 의한 밀폐형 압축기의 진동 저감 구조는, 회전축의 편심부에 살빼기구멍이나 살빼기홈을 형성하여 상기한 편심부의 무게를 줄임으로써, 회전축의 편하중을 낮춰 비틀림모멘트를 줄이고 이를 통해 압축기의 진동을 저감시켜 신뢰성을 높일 수 있다. Vibration reduction structure of the hermetic compressor according to the present invention, by reducing the weight of the eccentric portion by forming a weight loss hole or a weight loss groove in the eccentric portion of the rotary shaft, to reduce the lateral load of the rotary shaft to reduce the torsional moment through the vibration of the compressor Reduction can be improved.

도 1은 종래 로터리 압축기의 일례를 보인 종단면도,1 is a longitudinal sectional view showing an example of a conventional rotary compressor;

도 2는 도 1의 "A"부를 보인 종단면도,FIG. 2 is a longitudinal sectional view showing part “A” of FIG. 1;

도 3은 종래 로터리 압축기의 회전축을 상단에서 보인 평면도,3 is a plan view showing a rotating shaft of a conventional rotary compressor from the top,

도 4는 본 발명 로터리 압축기의 일례를 보인 종단면도,4 is a longitudinal sectional view showing an example of the rotary compressor of the present invention;

도 5는 도 1의 "B"부를 보인 종단면도,5 is a longitudinal cross-sectional view showing the "B" portion of FIG.

도 6은 본 발명 로터리 압축기의 회전축을 상단에서 보인 평면도,6 is a plan view showing the rotary shaft of the present invention the rotary shaft from the top,

도 7 및 도 8은 본 발명 로터리 압축기의 회전축에 대한 변형예를 상단에서 보인 평면도 및 측면에서 일부를 보인 종단면도.7 and 8 are a plan view showing a modification to the rotary shaft of the rotary compressor of the present invention from the top and a longitudinal sectional view showing a part from the side.

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

1 : 케이싱 2 : 본체실린더1: casing 2: main cylinder

3,4 : 메인,서브베어링 6 : 롤링피스톤3,4: main bearing, sub bearing 6: rolling piston

7 : 토출밸브 조립체 8 : 머플러7: discharge valve assembly 8: muffler

10 : 회전축 11 : 축부10: shaft 11: shaft portion

12 : 편심부 12a : 살빼기구멍12: eccentric part 12a: fat hole

12b : 살빼기홈12b: Weight Loss Home

Claims (3)

전동모터의 회전축 일측에는 편심부를 형성하고, 실린더의 내부에서 편심부에 롤링피스톤을 삽입하며, 롤링피스톤의 선회운동을 따라 반경방향으로 직선운동을 하는 베인을 상기 롤링피스톤의 외주면에 압접시켜 실린더의 흡입구와 토출구 사이에 배치하는 로터리 압축기에 있어서,An eccentric portion is formed on one side of the rotating shaft of the electric motor, a rolling piston is inserted into the eccentric portion of the cylinder, and a vane which linearly moves in a radial direction along the rolling movement of the rolling piston is pressed against the outer circumferential surface of the rolling piston. In the rotary compressor disposed between the suction port and the discharge port, 편심부에 살빼기부를 형성하는 것을 특징으로 하는 로터리 압축기의 진동 저감 구조.Vibration reduction structure of the rotary compressor, characterized in that the eccentric portion to form a fat loss. 제1항에 있어서,The method of claim 1, 살빼기부는 편심부에 축방향으로 살빼기구멍을 적어도 한 개 이상 형성하여 이루어지는 것을 특징으로 하는 로터리 압축기의 진동 저감 구조.The weight reduction part is a vibration reduction structure of a rotary compressor, characterized in that at least one of the weight loss hole formed in the eccentric portion in the axial direction. 제1항에 있어서,The method of claim 1, 살빼기부는 편심부에 축방향으로 소정의 깊이로 음형진 살빼기홈을 적어도 한 개 이상 형성하여 이루어지는 것을 특징으로하는 로터리 압축기의 진동 저감 구조.The weight reduction part is a vibration reduction structure of the rotary compressor, characterized in that the eccentric portion is formed by forming at least one negative groove in the axial direction at a predetermined depth.
KR1020030075622A 2003-10-28 2003-10-28 Structure for reducing vibration rotary compressor KR20050040427A (en)

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