KR20060120382A - Gas discharge structure for twin rotary compressor - Google Patents

Gas discharge structure for twin rotary compressor Download PDF

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KR20060120382A
KR20060120382A KR1020050042198A KR20050042198A KR20060120382A KR 20060120382 A KR20060120382 A KR 20060120382A KR 1020050042198 A KR1020050042198 A KR 1020050042198A KR 20050042198 A KR20050042198 A KR 20050042198A KR 20060120382 A KR20060120382 A KR 20060120382A
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cylinder
discharge
refrigerant
rotary compressor
bearing
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KR1020050042198A
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Korean (ko)
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KR100677520B1 (en
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한연봉
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엘지전자 주식회사
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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
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • 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
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
    • 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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • 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
    • 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
    • F04C2210/00—Fluid
    • F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
    • 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
    • F04C2240/40—Electric motor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

Abstract

A gas discharge structure of a twin rotary compressor is provided to directly guide refrigerant discharge from a secondary compression unit to a common muffler of a first compression unit via a middle bearing, a first cylinder and a main bearing, thereby integrating mufflers of the first and second compression units. A gas discharge structure of a twin rotary compressor includes a main bearing(112) for sealing first and second cylinders(111,121) and supporting a rotation shaft(3), wherein the main bearing is formed with a first discharge path and a first outlet(112a) for discharging refrigerant compressed in the first cylinder and a second discharge path for discharging refrigerant compressed in the second cylinder. The second discharge path is formed through the second cylinder, a middle bearing(113), the first cylinder, and the main bearing. The middle bearing has a second outlet in the middle. The main bearing has an outer surface mounted with a common muffler(116) receiving the first and second outlets of the first and second discharge paths together to compensate noise of discharged refrigerant.

Description

복식 로터리 압축기의 가스 토출 구조{GAS DISCHARGE STRUCTURE FOR TWIN ROTARY COMPRESSOR}GAS DISCHARGE STRUCTURE FOR TWIN ROTARY COMPRESSOR}

도 1은 종래 복식 로터리 압축기의 일례를 보인 단면도,1 is a cross-sectional view showing an example of a conventional double rotary compressor,

도 2는 본 발명 복식 로터리 압축기의 일례를 보인 단면도,2 is a cross-sectional view showing an example of the double rotary compressor of the present invention;

도 3은 도 2의 "A"부를 확대하여 보인 상세도,3 is an enlarged detailed view of part “A” of FIG. 2;

도 4는 도 2의 "Ⅰ-Ⅰ"선단면도,4 is a cross-sectional view taken along line "I-I" of FIG. 2;

도 5a 및 도 5b는 본 발명 복식 로터리 압축기에서 각 압축기구부에서 냉매가 토출되는 과정을 보인 개략도.5A and 5B are schematic views illustrating a process of discharging refrigerant from each compression mechanism unit in the double rotary compressor of the present invention.

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

110 : 제1 압축기구부 111 : 제1 실린더110: first compressor mechanism 111: first cylinder

111a : 제1 흡입구 111b : 제1 실린더의 가스구멍111a: first suction port 111b: gas hole of the first cylinder

112 : 메인베어링 112a : 제1 토출포트112: main bearing 112a: first discharge port

112b : 메인베어링의 가스구멍 113 : 미들베어링112b: gas hole of the main bearing 113: middle bearing

113a : 제2 토출포트 113b : 미들베어링의 가스구멍113a: second discharge port 113b: gas hole of the middle bearing

115 : 제1 토출밸브 116 : 공용머플러115: first discharge valve 116: common muffler

120 : 제2 압축기구부 121 : 제2 실린더120: second compression mechanism 121: second cylinder

121a : 제2 흡입구 122 : 서브베어링121a: second suction port 122: sub-bearing

124 : 제2 토출밸브 125 : 밸브스프링124: second discharge valve 125: valve spring

V1,V2 : 제1,제2 내부공간 SP1,SP2 : 제1, 제2 냉매흡입관V1, V2: first and second internal space SP1, SP2: first and second refrigerant suction pipe

본 발명은 복식 로터리 압축기에 관한 것으로, 특히 각각의 압축부에서 토출되는 냉매를 원활하게 유도하는 복식 로터리 압축기의 가스 토출 구조에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double rotary compressor, and more particularly, to a gas discharge structure of a double rotary compressor for smoothly inducing refrigerant discharged from each compression unit.

일반적으로 압축기는 기계적 에너지를 압축성 유체의 압축에너지로 변환시키는 것으로, 통상 왕복동식 및 스크롤식 및 원심식 그리고 베인식으로 구분할 수 있다. 로터리 압축기는 주로 에어콘과 같은 공기조화기에 적용하는 것으로, 최근에는 편하중을 줄일 수 있도록 회전축의 편심부를 대칭되게 형성하여 복수 개의 압축부를 가지는 소위 복식 로터리 압축기가 제시되고 있다.Generally, a compressor converts mechanical energy into compressive energy of a compressive fluid, and is generally classified into reciprocating type, scroll type, centrifugal type, and vane type. The rotary compressor is mainly applied to an air conditioner such as an air conditioner. Recently, a so-called double rotary compressor having a plurality of compression parts has been proposed by symmetrically forming an eccentric portion of a rotating shaft so as to reduce the unloading load.

도 1은 종래 복식 로터리 압축기의 일례를 보인 단면도이다.1 is a cross-sectional view showing an example of a conventional double rotary compressor.

이에 도시한 바와 같이 종래의 복식 로터리 압축기는, 복수 개의 냉매흡입관(SP1)(SP2)과 냉매토출관(DP)을 연통 설치하는 케이싱(1)과, 케이싱(1)의 상측에 설치하여 회전력을 발생하도록 고정자(2a)와 회전자(2b)로 된 전동기구부(2)와, 케이싱(1)의 하측에 상하로 설치하여 상기 전동기구부(2)에서 발생하는 회전력을 회전축(3)에 의해 전달받아 냉매를 각각 압축하는 제1 압축기구부(10) 및 제2 압축기구부(20)로 구성하고 있다.As shown in the drawing, a conventional double rotary compressor includes a casing 1 for communicating a plurality of refrigerant suction pipes SP1 and SP2 and a refrigerant discharge pipe DP, and an upper portion of the casing 1 to provide rotational force. It is installed up and down under the casing 1, and the transmission mechanism 2 consisting of the stator 2a and the rotor 2b so as to be generated to transmit the rotational force generated by the transmission mechanism 2 by the rotation shaft 3. It consists of the 1st compression mechanism part 10 and the 2nd compression mechanism part 20 which respectively receive and compress a refrigerant | coolant.

또, 각 압축기구부(10)(20)의 입구측에는 흡입냉매에서 액냉매를 분리하는 한 개의 어큐뮬레이터(미도시)를 연결 설치하고, 어큐뮬레이터의 출구는 각각 후술할 제1 실린더(11)의 흡입구(11a)와 제2 실린더(21)의 흡입구(21a)에 연결 설치하고 있다.In addition, an accumulator (not shown) for separating the liquid refrigerant from the suction refrigerant is connected to the inlet side of each of the compression mechanism units 10 and 20, and the outlets of the accumulators respectively include the inlets of the first cylinder 11 (to be described later). It is connected to the suction port 21a of 11a) and the 2nd cylinder 21, and is installed.

제1 압축기구부(10)는 환형으로 형성하여 케이싱(1)의 내부에 설치하는 제1 실린더(11)와, 제1 실린더(11)의 상하 양측을 복개하여 함께 제1 내부공간(V1)을 이루면서 상기한 회전축을 반경방향으로 지지하는 메인베어링(12) 및 미들베어링(13)과, 회전축(3)의 상측 편심부에 회전 가능하게 결합하여 제1 실린더(11)의 제1 내부공간(V1)에서 선회하면서 냉매를 압축하는 제1 롤링피스톤(14)과, 제1 롤링피스톤(14)의 외주면에 압접하도록 제1 실린더(11)에 반경방향으로 이동 가능하게 결합하여 상기 제1 실린더(11)의 제1 내부공간(V1)을 제1 흡입실과 제1 압축실로 각각 구획하는 제1 베인(미도시)과, 메인베어링(12)의 중앙부근에 구비한 제1 토출포트(12a) 선단에 개폐 가능하게 결합하여 제1 압축실에서 토출되는 냉매가스의 토출을 조절하는 제1 토출밸브(15)와, 제1 토출밸브를 수용하여 메인베어링의 상면에 고정 설치하는 제1 머플러(16)로 이루어져 있다. 제1 머플러(16)에는 각 실린더(11)(21)에서 토출되는 냉매가스가 케이싱(1)의 내부공간으로 배출되도록 가스통공(16a)을 형성하고 있다.The first compression mechanism 10 is formed in an annular shape to cover the first cylinder 11 installed inside the casing 1 and both the upper and lower sides of the first cylinder 11 to form the first internal space V1. The first inner space (V1) of the first cylinder 11 is rotatably coupled to the main bearing 12 and the middle bearing 13 for supporting the rotating shaft in the radial direction, and the upper eccentric portion of the rotating shaft (3) The first rolling piston (14) for compressing the refrigerant while turning in a) and the first cylinder (11) by radially movably coupled to the first cylinder (11) to press-contact with the outer peripheral surface of the first rolling piston (14) A first vane (not shown) for dividing the first internal space V1 into the first suction chamber and the first compression chamber, respectively, and a tip of the first discharge port 12a provided near the center of the main bearing 12. A first discharge valve 15 and a first discharge valve which are coupled to be openable and closed to control the discharge of the refrigerant gas discharged from the first compression chamber; By receiving it consists of a first muffler (16) securely fixed to the upper surface of the main bearing. The first muffler 16 is provided with a gas through hole 16a such that the refrigerant gas discharged from the cylinders 11 and 21 is discharged into the inner space of the casing 1.

제2 압축기구부(20)는 환형으로 형성하여 케이싱(1) 내부의 제1 실린더(11) 하측에 설치하는 제2 실린더(21)와, 제2 실린더(21)의 상하 양측을 복개하여 함께 제2 내부공간(V2)을 이루면서 상기한 회전축(3)을 반경방향 및 축방향으로 지지하 는 미들베어링(13) 및 서브베어링(22)과, 회전축(3)의 하측 편심부에 회전 가능하게 결합하여 제2 실린더(21)의 제2 내부공간(V2)에서 선회하면서 냉매를 압축하는 제2 롤링피스톤(23)과, 제2 롤링피스톤(23)의 외주면에 압접하도록 제2 실린더(21)에 반경방향으로 이동 가능하게 결합하여 상기 제2 실린더(21)의 제2 내부공간(V2)을 제2 흡입실과 제2 압축실로 각각 구획하는 제2 베인(미도시)과, 서브베어링(22)의 중앙부근에 구비한 제2 토출포트(22a) 선단에 개폐 가능하게 결합하여 제2 압축실에서 토출되는 냉매가스의 토출을 조절하는 제2 토출밸브(24)와, 제2 토출밸브(24)를 수용하여 서브베어링(22)의 저면에 고정 설치하는 제2 머플러(25)로 이루어져 있다. The second compression mechanism 20 is formed in an annular shape to cover the second cylinder 21 installed below the first cylinder 11 inside the casing 1, and both the upper and lower sides of the second cylinder 21 together. 2 rotatably coupled with the middle bearing 13 and the sub bearing 22 and the lower eccentric part of the rotating shaft 3 which support the above-mentioned rotating shaft 3 radially and axially while forming the inner space V2. The second rolling piston 23 to compress the refrigerant while turning in the second inner space V2 of the second cylinder 21 and the outer circumferential surface of the second rolling piston 23 to the second cylinder 21. The second vane (not shown) and the sub-bearing 22 of the second inner space (V2) of the second cylinder 21 is divided into a second suction chamber and the second compression chamber so as to be movable in a radial direction, respectively. It is coupled to the front end of the second discharge port 22a provided near the center so as to control the discharge of the refrigerant gas discharged from the second compression chamber. The consists of a second discharge valve 24 and the second ejection second muffler 25 is securely fixed to the bottom surface of the receiving valve 24, the sub bearing (22).

여기서, 제2 머플러(25)로 토출되는 냉매를 제1 머플러(16)로 안내하도록 서브베어링(22), 제2 실린더(21), 미들베어링(13), 제1 실린더(11), 메인베어링(12) 등에는 축방향으로 일치하도록 제1, 제2, 제3, 제4, 제5 가스구멍(22b,21b,13a,11b,12b)을 형성하고 있다.Here, the sub-bearing 22, the second cylinder 21, the middle bearing 13, the first cylinder 11, the main bearing to guide the refrigerant discharged to the second muffler 25 to the first muffler 16 12, etc., first, second, third, fourth, and fifth gas holes 22b, 21b, 13a, 11b, and 12b are formed to coincide in the axial direction.

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

즉, 전동기구부(2)의 고정자(2a)에 전원을 인가하여 회전자(2b)가 회전하면, 회전축(3)이 회전자(2b)와 함께 회전하면서 전동기구부(2)의 회전력을 제1 압축기구부(10)와 제2 압축기구부(20)에 전달하여 각각의 롤링피스톤(14)(23)이 각 실린더(11)(21)내에서 편심 회전하고, 이에 따라 냉매가스가 제1 실린더(11)와 제2 실린더(21)에 연결된 제1 냉매흡입관(SP1)과 제2 냉매흡입관(SP2)을 통해 각각의 흡입공간으로 번갈아 흡입되었다가 일정압력까지 압축되어 각 토출포트(12a)(22a)를 통해 케이싱(1)의 내부로 번갈아 토출되는 일련의 과정을 반복한다.That is, when the rotor 2b is rotated by applying power to the stator 2a of the power transmission mechanism 2, the rotating shaft 3 rotates together with the rotor 2b, and the rotational force of the power transmission mechanism 2 is firstly increased. The rolling pistons 14 and 23 are eccentrically rotated in the respective cylinders 11 and 21 so as to be transmitted to the compression mechanism section 10 and the second compression mechanism section 20, so that the refrigerant gas is supplied to the first cylinder ( 11) alternately sucked into each suction space through the first refrigerant suction pipe SP1 and the second refrigerant suction pipe SP2 connected to the second cylinder 21 and then compressed to a predetermined pressure to discharge each of the discharge ports 12a and 22a. Repeat a series of processes alternately discharged into the inside of the casing (1).

이때, 제1 실린더(11)에서 토출되는 냉매가스는 제1 토출밸브(15)를 거쳐 제1 머플러(16)에서 소음이 감쇄된 후 케이싱(1)의 내부공간으로 배출되는 반면 제2 실린더(21)에서 토출되는 냉매가스는 제2 토출밸브(24)를 거쳐 제2 머플러(25)에서 소음이 감쇄된 후 제1, 제2, 제3, 제4, 제5 가스구멍(22b,21b,13a,11b,12b)을 차례대로 통과하여 제1 머플러(25)로 유입되어 그 제1 머플러(16)에서 감쇄된 후 케이싱(1)의 내부공간으로 배출되는 것이었다.At this time, the refrigerant gas discharged from the first cylinder 11 is discharged into the inner space of the casing 1 after the noise is attenuated by the first muffler 16 via the first discharge valve 15 while the second cylinder ( 21, the refrigerant gas discharged from the first, second, third, fourth and fifth gas holes 22b and 21b after noise is attenuated by the second muffler 25 via the second discharge valve 24. 13a, 11b and 12b were sequentially passed through the first muffler 25 and attenuated by the first muffler 16 and then discharged into the inner space of the casing 1.

그러나, 상기와 같은 종래 복식 로터리 압축기에 있어서는, 서브프레임(22)과 제2 실린더(21)에 각각 가스구멍(22b)(21b)을 형성하는 것은 물론 서브프레임(22)의 하단에 별도의 제2 머플러(25)를 설치하여야 재료비용이 증가하고 제2 머플러(25)의 높이만큼 압축기가 커져야 하는 문제점이 있었다.However, in the conventional double rotary compressor as described above, the gas holes 22b and 21b are formed in the subframe 22 and the second cylinder 21, respectively, as well as in the lower end of the subframe 22. There is a problem in that the cost of the material increases and the compressor needs to be increased by the height of the second muffler 25 when the second muffler 25 is installed.

본 발명은 상기와 같은 종래 복식 로터리 압축기가 가지는 문제점을 감안하여 안출한 것으로, 제2 실린더와 서브프레임의 형상을 간소화하고 제2 머플러를 제거하여 재료비용을 절감함과 아울러 압축기 크기를 줄일 수 있는 복식 로터리 압축기의 가스 토출 구조를 제공하려는데 그 목적이 있다. The present invention has been made in view of the above problems of the conventional double rotary compressor, and the shape of the second cylinder and the subframe can be simplified and the size of the compressor can be reduced while reducing the material cost by removing the second muffler. It is an object of the present invention to provide a gas discharge structure of a double rotary compressor.

본 발명의 목적을 달성하기 위하여, 냉매를 독립적으로 흡입 압축하는 제1 실린더 및 제2 실린더와, 양쪽 실린더의 중간에 개재하여 두 실린더의 내부공간을 구분하는 미들베어링과, 양쪽 실린더의 상하 양측에 각각 설치하여 두 실린더의 내 부공간을 밀봉함과 아울러 구동모터의 회전력을 전달하는 회전축을 지지하는 메인베어링 및 서브베어링과, 양쪽 실린더의 내부공간에서 회전축에 편심지게 결합하여 선회운동을 하면서 각각의 베인과 함께 냉매를 압축하는 복수 개의 롤링피스톤을 포함한 복식 로터리 압축기에 있어서, 메인베어링에는 제1 실린더에서 압축된 냉매를 토출하도록 제1 토출유로를 형성하고, 제2 실린더와 미들베어링과 제1 실린더 그리고 상기 메인베어링에는 상기한 제2 실린더에서 압축된 냉매를 토출하도록 제2 토출유로를 연통 형성하며, 메인베어링의 외측면에는 제1 토출유로와 제2 토출유로의 출구단을 함께 수용하여 토출되는 냉매의 소음을 상쇄하도록 공용머플러를 고정 설치하여서 된 것을 특징으로 하는 복식 로터리 압축기의 가스 토출 구조를 제공한다.In order to achieve the object of the present invention, the first and second cylinders to independently suck and compress the refrigerant, a middle bearing for separating the inner space of the two cylinders between the two cylinders, and the upper and lower sides of both cylinders Main bearings and sub-bearings to support the rotating shaft that transmits the rotational force of the drive motor and seal the inner space of the two cylinders, respectively, installed in each of the two cylinders eccentrically coupled to the rotating shaft in the rotational movement In the double rotary compressor including a plurality of rolling pistons for compressing the refrigerant together with the vane, the main bearing is formed with a first discharge passage to discharge the refrigerant compressed in the first cylinder, the second cylinder, the middle bearing and the first cylinder The main bearing communicates with the second discharge passage to discharge the refrigerant compressed in the second cylinder. And a common muffler is fixedly installed on the outer surface of the main bearing to accommodate the exit ends of the first discharge passage and the second discharge passage together to offset noise of the discharged refrigerant. Provide structure.

이하, 본 발명에 의한 복식 로터리 압축기의 가스 토출 구조를 첨부도면에 도시한 일실시예에 의거하여 상세하게 설명한다.EMBODIMENT OF THE INVENTION Hereinafter, the gas discharge structure of the double rotary compressor by this invention is demonstrated in detail based on one Example shown in an accompanying drawing.

도 2는 본 발명 복식 로터리 압축기의 일례를 보인 단면도이고, 도 3은 도 2의 "A"부를 확대하여 보인 상세도이며, 도 4는 도 2의 "Ⅰ-Ⅰ"선단면도이고, 도 5a 및 도 5b는 본 발명 복식 로터리 압축기에서 각 압축기구부에서 냉매가 토출되는 과정을 보인 개략도이다.2 is a cross-sectional view showing an example of the double rotary compressor of the present invention, FIG. 3 is a detailed view showing an enlarged portion "A" of FIG. 2, FIG. 4 is a sectional view taken along line "I-I" of FIG. Figure 5b is a schematic diagram showing a process of the refrigerant is discharged from each of the compression mechanism in the rotary compressor of the present invention.

이에 도시한 바와 같이 본 발명에 의한 복식 로터리 압축기는, 케이싱(1)의 상측에 회전력을 발생하도록 전동기구부(2)를 설치하고, 전동기구부(2)에서 발생하는 회전력을 회전축(3)에 의해 전달받아 냉매를 각각 압축하는 제1 압축기구부(110) 및 제2 압축기구부(120)를 상기 전동기구부(2)의 하측에 상하 설치하며, 제1 압축기구부(110)와 제2 압축기구부(120)에서 압축된 냉매는 모두 후술할 메인베어링(112)을 통해 케이싱(1)의 내부로 토출되도록 구성한다.As shown in the drawing, the double rotary compressor according to the present invention is provided with an electric mechanism part 2 so as to generate a rotational force on the upper side of the casing 1, and the rotational force generated by the electric mechanism part 2 by the rotary shaft 3. The first compression mechanism 110 and the second compression mechanism 120 for compressing the refrigerant, respectively, is installed up and down the lower side of the transmission mechanism 2, the first compression mechanism 110 and the second compression mechanism 120 Refrigerant compressed in the) is configured to be discharged to the inside of the casing (1) through the main bearing 112 to be described later.

제1 압축기구부(110)는 환형으로 형성하여 케이싱(1)의 내부에 설치하는 제1 실린더(111)와, 제1 실린더(111)의 상하 양측을 복개하여 함께 제1 내부공간(V1)을 이루면서 상기한 회전축(3)을 반경방향으로 지지하는 메인베어링(112) 및 미들베어링(113)과, 회전축(3)의 상측 편심부에 회전 가능하게 결합하여 제1 실린더(111)의 제1 내부공간(V1)에서 선회하면서 냉매를 압축하는 제1 롤링피스톤(114)과, 제1 롤링피스톤(114)의 외주면에 압접하도록 제1 실린더(111)에 반경방향으로 이동 가능하게 결합하여 상기 제1 실린더(111)의 제1 내부공간(V1)을 제1 흡입실과 제1 압축실로 각각 구획하는 제1 베인(미도시)과, 메인베어링(112)의 제1 토출포트(112a) 선단에 개폐 가능하게 결합하여 제1 압축실에서 토출되는 냉매가스의 토출을 조절하는 제1 토출밸브(115)와, 제1 토출포트(112a)와 후술할 메인프레임(112)의 가스구멍(112a)을 수용하여 메인베어링(112)의 상면에 고정 설치하는 공용머플러(116)로 이루어진다. The first compression mechanism 110 is formed in an annular shape to cover the first cylinder 111 installed in the casing 1 and the upper and lower sides of the first cylinder 111 to form the first internal space V1 together. The main bearing 112 and the middle bearing 113 to radially support the rotating shaft 3 and the upper eccentric portion of the rotating shaft 3 to be rotatably coupled to the first inside of the first cylinder 111. The first rolling piston 114, which rotates in the space V1 and compresses the refrigerant, is radially movably coupled to the first cylinder 111 so as to be press-contacted to the outer circumferential surface of the first rolling piston 114, wherein the first rolling piston 114 The first vane (not shown) for dividing the first internal space V1 of the cylinder 111 into the first suction chamber and the first compression chamber, respectively, and can be opened and closed at the tip of the first discharge port 112a of the main bearing 112. And a first discharge valve 115 and a first discharge port 112a for controlling the discharge of the refrigerant gas discharged from the first compression chamber by combining the same. And storing the gas hole (112a) of the main frame 112 to be described later is made to a public muffler 116 is securely fixed to the upper surface of the main bearing (112).

제2 압축기구부(120)는 환형으로 형성하여 케이싱(1) 내부의 제1 실린더(111) 하측에 설치하는 제2 실린더(121)와, 제2 실린더(121)의 상하 양측을 복개하여 함께 제2 내부공간(V1)을 이루면서 상기한 회전축(3)을 반경방향 및 축방향으로 지지하는 미들베어링(113) 및 서브베어링(122)과, 회전축(3)의 하측 편심부에 회전 가능하게 결합하여 제2 실린더(121)의 제2 내부공간(V2)에서 선회하면서 냉매를 압축하는 제2 롤링피스톤(123)과, 제2 롤링피스톤(123)의 외주면에 압접하도록 제2 실린더(121)에 반경방향으로 이동 가능하게 결합하여 상기 제2 실린더(121)의 제2 내부공간(V2)을 제2 흡입실과 제2 압축실로 각각 구획하는 제2 베인(미도시)과, 후술할 미들베어링(113)의 중앙부근에 구비한 제2 토출포트(113a) 선단에 개폐 가능하게 결합하여 제2 압축실에서 토출되는 냉매가스의 토출을 조절하는 제2 토출밸브(124)로 이루어진다.The second compression mechanism part 120 is formed in an annular shape to cover the second cylinder 121 installed below the first cylinder 111 inside the casing 1, and the upper and lower sides of the second cylinder 121, 2 and the middle bearing 113 and the sub-bearing 122 to support the rotary shaft 3 in the radial and axial directions while forming the inner space (V1), and rotatably coupled to the lower eccentric portion of the rotary shaft (3) A radius of the second cylinder 121 so as to contact the outer circumferential surface of the second rolling piston 123 and the second rolling piston 123 compresses the refrigerant while turning in the second inner space V2 of the second cylinder 121. A second vane (not shown) which is movably coupled in a direction to partition the second internal space V2 of the second cylinder 121 into a second suction chamber and a second compression chamber, and a middle bearing 113 to be described later. Refrigerant gas discharged from the second compression chamber by being coupled to the front end of the second discharge port 113a provided near the center It made of a second discharge valve 124 for controlling the discharge.

여기서, 도 3에서와 같이 미들베어링(123)과 제1 실린더(111) 그리고 메인베어링(112)에는 상기 제2 토출포트(113a)에 연통하여 함께 토출유로를 이루고 상기한 제1 압축기구부(110)의 공용머플러(116)에 제1 토출포트(112a)와 함께 수용되도록 가스구멍(113b)을 형성하고, 미들베어링(113)의 가스구멍(113b)에는 원판 모양의 제2 토출밸브(124)와 접하도록 소정의 높이로 밸브시트면(미부호)을 형성하며, 제1 실린더(111)의 가스구멍(111b)에는 상기 제2 토출밸브(124)의 압축배면을 탄력 지지하도록 압축스프링으로 된 밸브스프링(125)을 설치하여 이루어진다.Here, as shown in FIG. 3, the middle bearing 123, the first cylinder 111, and the main bearing 112 communicate with the second discharge port 113a to form a discharge flow path together. A gas hole 113b is formed in the common muffler 116 to be accommodated together with the first discharge port 112a, and a disc-shaped second discharge valve 124 is formed in the gas hole 113b of the middle bearing 113. A valve seat surface (unsigned) is formed at a predetermined height so as to come into contact with the contact surface, and a gas spring 111b of the first cylinder 111 is formed of a compression spring to elastically support the compression back surface of the second discharge valve 124. It is made by installing a valve spring (125).

또, 도 4에서와 같이 제2 토출포트(113a)가 제1 토출포트(112a)와 중첩되지 않도록 제2 토출포트(113a)를 축방향에 대해 경사지게 형성하거나 가스구멍, 즉 메인베어링(112)의 가스구멍(112b)을 경사지게 형성할 수 있다.In addition, as shown in FIG. 4, the second discharge port 113a is formed to be inclined with respect to the axial direction so that the second discharge port 113a does not overlap with the first discharge port 112a or the gas hole, that is, the main bearing 112. Gas holes 112b can be formed to be inclined.

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 116a는 가스통공이다.Reference numeral 116a in the figure denotes a gas through hole.

상기와 같은 본 발명 복식 로터리 압축기의 가스 토출 구조는 다음과 같은 작용 효과를 갖는다.The gas discharge structure of the double rotary compressor of the present invention as described above has the following effects.

즉, 전동기구부(2)의 고정자(2a)에 전원을 인가하여 회전자(2b)가 회전축(3) 과 함께 회전하면, 제1 압축기구부(110)와 제2 압축기구부(120)의 각 롤링피스톤(114)(123)이 각각의 실린더(111)(121) 내부공간으로 편심 회전하면서 냉매가스를 흡입하여 압축한 후 번갈아 토출하는 일련의 과정을 반복한다. 이때, 도 5a에서와 같이 제1 압축기구부(110)에서 압축되는 냉매는 제1 토출포트(112a)를 통해 공용머플러(116)로 토출되는 반면 도 5b에서와 같이 제2 압축기구부(120)에서 압축되는 냉매는 제2 토출포트(113a)를 통과하여 미들베어링(113)과 제1 실린더(111) 그리고 메인베어링(112)의 가스구멍(113b)(111b)(112b)을 통해 상기한 공용머플러(116)로 토출되었다가 소음이 감쇄되면서 케이싱(1)의 내부공간으로 배출된다.That is, when the rotor 2b rotates together with the rotating shaft 3 by applying power to the stator 2a of the electric mechanism part 2, each rolling of the 1st compression mechanism part 110 and the 2nd compression mechanism part 120 is carried out. The piston 114, 123 is rotated eccentrically into the inner space of each of the cylinder (111, 121) to repeat the series of processes to inhale and compress the refrigerant gas, and then alternately discharge. At this time, as shown in FIG. 5A, the refrigerant compressed in the first compression mechanism unit 110 is discharged to the common muffler 116 through the first discharge port 112a, while in the second compression mechanism unit 120 as shown in FIG. 5B. The compressed refrigerant passes through the second discharge port 113a and passes through the middle bearing 113, the first cylinder 111, and the gas holes 113b, 111b, 112b of the main bearing 112. After discharged to 116, the noise is attenuated and discharged into the inner space of the casing (1).

이렇게, 제2 실린더에서 토출되는 냉매가 미들베어링과 제1 실린더 그리고 메인베어링의 가스구멍을 통해 공용머플러로 유입됨과 아울러 제1 실린더에서 토출되는 냉매 역시 공용머플러로 유입되었다가 케이싱으로 배출되도록 함으로써, 서브베어링에 별도의 머플러를 설치할 필요가 없어 부품수 절감에 따른 비용절감과 압축기의 크기를 줄일 수 있다. In this way, the refrigerant discharged from the second cylinder is introduced into the common muffler through the gas bearings of the middle bearing, the first cylinder and the main bearing, and the refrigerant discharged from the first cylinder is also introduced into the common muffler and discharged into the casing. There is no need to install a separate muffler in the sub-bearings, which can reduce the cost and the size of the compressor.

본 발명에 의한 복식 로터리 압축기의 가스 토출 구조는, 복수 개의 압축기구부를 갖는 로터리 압축기에서 제2 압축기구부에서 토출되는 냉매를 미들베어링과 제1 실린더 그리고 메인베어링을 통해 제1 압축기구부의 공용머플러로 곧바로 안내함으로써, 제1 압축기구부와 제2 압축기구부의 머플러를 통합 활용할 수 있어 머플러 개수를 줄일 수 있고 이를 통해 재료비용을 절감할 수 있을 뿐만 아니라 압축기를 소형화할 수 있다.The gas discharge structure of the double rotary compressor according to the present invention is a rotary compressor having a plurality of compression mechanism portions, the refrigerant discharged from the second compression mechanism portion through the middle bearing, the first cylinder and the main bearing to the common muffler of the first compression mechanism portion By immediately guiding, it is possible to integrate and utilize the muffler of the first compression mechanism and the second compression mechanism, thereby reducing the number of mufflers, thereby reducing the material cost and miniaturizing the compressor.

Claims (3)

냉매를 독립적으로 흡입 압축하는 제1 실린더 및 제2 실린더와, 양쪽 실린더의 중간에 개재하여 두 실린더의 내부공간을 구분하는 미들베어링과, 양쪽 실린더의 상하 양측에 각각 설치하여 두 실린더의 내부공간을 밀봉함과 아울러 구동모터의 회전력을 전달하는 회전축을 지지하는 메인베어링 및 서브베어링과, 양쪽 실린더의 내부공간에서 회전축에 편심지게 결합하여 선회운동을 하면서 각각의 베인과 함께 냉매를 압축하는 복수 개의 롤링피스톤을 포함한 복식 로터리 압축기에 있어서,The first and second cylinders, which independently suck and compress the refrigerant, a middle bearing that separates the inner spaces of the two cylinders between the two cylinders, and the upper and lower sides of the two cylinders, respectively, are installed to Main bearings and sub-bearings that support the rotating shaft that transfers the rotational force of the drive motor, and a plurality of rollings that compress the refrigerant together with each vane while pivoting by eccentrically engaging the rotating shaft in the inner space of both cylinders. In a double rotary compressor including a piston, 메인베어링에는 제1 실린더에서 압축된 냉매를 토출하도록 제1 토출유로를 형성하고, 제2 실린더와 미들베어링과 제1 실린더 그리고 상기 메인베어링에는 상기한 제2 실린더에서 압축된 냉매를 토출하도록 제2 토출유로를 연통 형성하특징으로 하는 복식 로터리 압축기의 가스 토출 구조.A first discharge passage is formed in the main bearing so as to discharge the refrigerant compressed in the first cylinder, and a second cylinder, the middle bearing, the first cylinder, and the second bearing in the main bearing discharge the refrigerant compressed in the second cylinder. A gas discharge structure of a double rotary compressor characterized by forming a discharge passage in communication. 제1항에 있어서,The method of claim 1, 메인베어링의 제1 토출유로 끝단에는 제1 실린더에서 토출되는 냉매를 조절하도록 제1 토출밸브를 설치하는 것을 특징으로 하는 복식 로터리 압축기의 가스토출 구조.A gas discharge structure of a double rotary compressor, characterized in that the first discharge valve is provided at the end of the first discharge passage of the main bearing to control the refrigerant discharged from the first cylinder. 제1항에 있어서,The method of claim 1, 미들베어링의 제2 토출유로에는 밸브시트면을 형성하여 제2 토출밸브를 설치하고, 제1 실린더의 제2 토출유로에는 상기 제2 토출밸브의 압축배면을 탄력 지지하는 밸브스프링을 설치하여서 된 것을 특징으로 하는 복식 로터리 압축기으 가스 토출 구조.The second discharge flow path of the middle bearing is provided with a valve seat surface to provide a second discharge valve, and the second discharge flow path of the first cylinder is provided with a valve spring for elastically supporting the compression back surface of the second discharge valve. A double rotary compressor characterized in that the gas discharge structure.
KR1020050042198A 2005-05-19 2005-05-19 Gas discharge structure for twin rotary compressor KR100677520B1 (en)

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KR101979450B1 (en) * 2017-12-22 2019-05-16 엘지전자 주식회사 Rotary compressor
WO2023248559A1 (en) * 2022-06-22 2023-12-28 パナソニックＩｐマネジメント株式会社 Hermetic compressor

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KR101452510B1 (en) * 2008-07-22 2014-10-23 엘지전자 주식회사 Compressor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101979450B1 (en) * 2017-12-22 2019-05-16 엘지전자 주식회사 Rotary compressor
CN109958624A (en) * 2017-12-22 2019-07-02 Lg电子株式会社 Rotary compressor
US11326605B2 (en) 2017-12-22 2022-05-10 Lg Electronics Inc. Dual cylinder rotary compressor with intermediate plate that flows both cylinders to the muffler
WO2023248559A1 (en) * 2022-06-22 2023-12-28 パナソニックＩｐマネジメント株式会社 Hermetic compressor

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