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KR101311710B1 - Hermetic compressor - Google Patents

Hermetic compressor Download PDF

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Publication number
KR101311710B1
KR101311710B1 KR1020060137096A KR20060137096A KR101311710B1 KR 101311710 B1 KR101311710 B1 KR 101311710B1 KR 1020060137096 A KR1020060137096 A KR 1020060137096A KR 20060137096 A KR20060137096 A KR 20060137096A KR 101311710 B1 KR101311710 B1 KR 101311710B1
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KR
South Korea
Prior art keywords
suction
cylinder
suction port
communication
port
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Application number
KR1020060137096A
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Korean (ko)
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KR20080061907A (en
Inventor
서홍석
Original Assignee
엘지전자 주식회사
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Priority to KR1020060137096A priority Critical patent/KR101311710B1/en
Priority to PCT/KR2007/006799 priority patent/WO2008082130A1/en
Priority to CN200780048291XA priority patent/CN101568730B/en
Publication of KR20080061907A publication Critical patent/KR20080061907A/en
Application granted granted Critical
Publication of KR101311710B1 publication Critical patent/KR101311710B1/en

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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
    • F04C29/0021—Systems for the equilibration of forces acting on the pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • 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
    • 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
    • F04C23/008—Hermetic 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
    • 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
    • Y10S417/902—Hermetically sealed motor pump unit

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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, 복수의 실린더의 흡입구가 서로 연통되도록 하고 그 중 어느 한 쪽 실린더의 흡입구에만 흡입관이 연결되도록 함으로써, 각 실린더에 흡입관을 독립적으로 연결하는 것에 비해 부품수를 줄이고 그에 따른 조립공수를 줄여 생산비용이 절감되고 상기 흡입관 사이의 공진으로 인한 압축기 진동의 증가를 미연에 방지할 수 있다.According to the present invention, the suction ports of the plurality of cylinders communicate with each other, and the suction pipes are connected only to the suction ports of either of them, thereby reducing the number of parts and the assembly labor accordingly, compared to independently connecting the suction pipes to each cylinder. The production cost can be reduced and an increase in compressor vibration due to resonance between the suction pipes can be prevented.

Description

밀폐형 압축기{HERMETIC COMPRESSOR}{HERMETIC COMPRESSOR}

도 1은 본 발명 로터리 압축기의 일례를 보인 종단면도,1 is a longitudinal sectional view showing an example of the rotary compressor of the present invention,

도 2는 도 1에서 압축기구부를 파단하여 보인 사시도,FIG. 2 is a perspective view of the compression mechanism shown in FIG. 1,

도 3은 도 1에서 압축기구부의 흡입유로를 보인 종단면도,Figure 3 is a longitudinal sectional view showing a suction flow path of the compression mechanism in Figure 1,

도 4은 도 1에서 제1 실린더로 냉매가 흡입되는 과정을 보인 종단면도,4 is a longitudinal cross-sectional view illustrating a process of sucking refrigerant into the first cylinder of FIG. 1;

도 5는 도 1에서 제2 실린더로 냉매가 흡입되는 과정을 보인 종단면도,
도 6은 압축기입력과 연통구 체적과의 관계를 보인 그래프.5 is a longitudinal cross-sectional view illustrating a process of sucking refrigerant into a second cylinder in FIG. 1;
6 is a graph showing the relationship between the compressor input and the communication volume.

도 7은 본 발명의 흡입유로가 용량 가변형 로터리 압축기에 적용된 일례를 보인 종단면도Figure 7 is a longitudinal sectional view showing an example in which the suction flow path of the present invention is applied to a variable displacement rotary compressor

삭제delete

** 도면의 주요 부분에 대한 부호의 설명 **DESCRIPTION OF REFERENCE NUMERALS

100 : 케이싱 200 : 전동기구부100: casing 200: electric mechanism part

300 : 제1 압축기구부 311 : 제1 흡입구300: first compression mechanism 311: first suction port

312 : 우회구멍 400 : 제2 압축기구부312: bypass hole 400: second compressor section

410 : 제2 실린더 411 : 제2 흡입구410: second cylinder 411: second suction port

500 : 중간베어링 511 : 연통구500: intermediate bearing 511: communication port

600 : 어큐뮬레이터 710 : 흡입관600: accumulator 710: suction tube

720 : 토출관 F : 연통유로720: discharge tube F: communication flow path

V1,V2 : 제1,제2 압축공간V1, V2: first and second compression space

복식 밀폐형 압축기는 복수 개의 실린더에 한 개씩의 흡입관이 각각 연결되어 본 발명은 밀폐형 압축기에 관한 것으로, 특히 한 개의 흡입관으로 복수 개의 실린더에 냉매를 공급할 수 있는 밀폐형 압축기에 관한 것이다. The double hermetic compressor is connected to a plurality of cylinders, one suction tube, and the present invention relates to a hermetic compressor, and more particularly, to a hermetic compressor capable of supplying refrigerant to a plurality of cylinders with one suction tube.

일반적으로 밀폐형 압축기는 밀폐된 케이싱의 내부공간에 구동력을 발생하는 전동기구부와 그 전동기구부의 구동력을 전달받아 냉매를 압축하는 압축기구부가 함께 설치되어 있다.Generally, the hermetic compressor is provided with a transmission mechanism for generating a driving force in an inner space of a sealed casing and a compression mechanism for receiving the driving force of the transmission mechanism to compress the refrigerant.

상기 밀폐형 압축기는 실린더의 개수에 따라 단식 밀폐형 압축기와 복식 밀폐형 압축기로 구분할 수 있다.The hermetic compressor can be classified into a single hermetic compressor and a double hermetic hermetic compressor according to the number of cylinders.

상기 단식 밀폐형 압축기는 한 개의 실린더에 한 개의 흡입관이 연결되는 반면, 상기 복식 밀폐형 압축기는 복수 개의 실린더에 각각의 흡입관이 독립적으로 연결되어 있다. In the single hermetic compressor, one suction tube is connected to one cylinder, whereas the double hermetic compressor has each suction tube independently connected to a plurality of cylinders.

그러나, 상기와 같이 복수 개의 실린더에 흡입관이 각각 독립적으로 연통되는 경우에는 상기 흡입관의 개수가 많아지게 되어 그만큼 부품수가 증가될 뿐만 아니라 그에 따른 조립공수가 증가하게 되어 생산비용이 가중되는 문제점이 있었다. However, when the suction pipes are independently connected to the plurality of cylinders as described above, the number of the suction pipes increases, thereby increasing the number of parts and increasing the number of assembly operations, thereby increasing the production cost.

또, 한 개의 어큐뮬레이터에 복수 개의 흡입관이 연결되고 그 복수 개의 흡입관이 상기 케이싱에 연결되어야 하므로 상기 어큐뮬레이터와 케이싱의 가공과 조립이 난해하게 되어 생산비용이 더욱 가중되는 문제점도 있었다. In addition, since a plurality of suction pipes are connected to one accumulator and the plurality of suction pipes are connected to the casing, processing and assembly of the accumulator and the casing are difficult, thereby increasing production costs.

또, 상기 압축기구부에서 발생되는 진동이 복수 개의 흡입관을 통해 전달되면서 복수 개의 흡입관이 상호 공진되어 압축기 진동이 가진되는 문제점도 있었다.In addition, as the vibration generated in the compression mechanism is transmitted through the plurality of suction pipes, the plurality of suction pipes resonate with each other, thereby causing the compressor vibration.

본 발명은 상기한 바와 같은 문제점을 해결한 것으로, 복수의 실린더를 구비하는 복식 밀폐형 압축기에서 흡입관을 공용으로 이용할 수 있도록 하여 부품수와 조립공수를 줄이는 동시에 어큐뮬레이터와 케이싱 등의 가공을 용이하게 하여 생산비용을 절감하고, 상기 압축기구부에서 전달되는 진동이 가진되는 것을 방지할 수 있는 밀폐형 압축기를 제공하려는데 본 발명의 목적이 있다.The present invention solves the problems as described above, by using a suction tube in a double hermetic compressor having a plurality of cylinders in common to reduce the number of parts and assembly labor, and at the same time to facilitate the processing of the accumulator and casing, etc. It is an object of the present invention to provide a hermetic compressor that can reduce cost and prevent the vibration transmitted from the compression mechanism unit from being excited.

본 발명의 목적을 달성하기 위하여, 각각의 압축공간을 갖는 복수의 실린더조립체가 구비되는 밀폐형 압축기에 있어서, 상기 복수의 실린더조립체 중에서 어느 한 쪽 실린더조립체의 흡입구에만 흡입관이 연결되고, 다른 실린더조립체는 상기 흡입관이 연결된 실린더조립체의 흡입구에 연통되는 것을 특징으로 하는 밀폐형 압축기가 제공된다.In order to achieve the object of the present invention, in a hermetic compressor having a plurality of cylinder assemblies having respective compression spaces, a suction pipe is connected only to an inlet of one of the plurality of cylinder assemblies, and the other cylinder assembly is Provided is a hermetic compressor, wherein the suction pipe communicates with a suction port of a connected cylinder assembly.

또, 냉매가 흡입되어 압축되는 압축공간이 각각 형성되고 그 각각의 압축공간에 연통되도록 흡입구가 각각 형성되어 밀폐된 케이싱의 내부공간에 상하로 설치되는 복수의 실린더; 및 상기 복수의 실린더 상하 양측면과 상기 양측 실린더 사이에 각각 설치되어 함께 상기 복수의 압축공간을 분리 형성하는 복수의 베어링플레이트;를 포함하고, 상기 복수의 실린더 중에서 어느 한 쪽 실린더의 흡입구에는 흡입관이 직접 연결되며, 다른 실린더의 흡입구는 상기 실린더 사이의 베어링플레이 트에 구비된 연통구를 통해 상기 흡입관이 연결된 실린더의 흡입구에 연통되는 것을 특징으로 하는 밀폐형 압축기가 제공된다.In addition, a plurality of cylinders are formed up and down in the inner space of the closed casing is formed with a suction port is formed so that each of the compression space for the refrigerant is sucked and compressed and communicate with the respective compression space; And a plurality of bearing plates disposed between the upper and lower side surfaces of the plurality of cylinders and the two cylinders, respectively, to form the plurality of compression spaces separately. A suction pipe is directly connected to a suction port of one of the plurality of cylinders. Is connected, the inlet of the other cylinder is provided with a hermetic compressor which is in communication with the inlet of the cylinder connected to the suction pipe through the communication port provided in the bearing plate between the cylinder.

이하, 본 발명에 의한 밀폐형 압축기를 첨부도면에 도시된 일실시예에 의거하여 상세하게 설명한다.Hereinafter, a hermetic compressor according to the present invention will be described in detail with reference to an embodiment shown in the accompanying drawings.

도 1 내지 도 5는 본 발명 밀폐형 압축기의 일례로 복식 로터리 압축기가 도시된다.1 to 5 show a double rotary compressor as an example of the hermetic compressor of the present invention.

도 1에 도시된 바와 같이 본 발명에 의한 복식 로터리 압축기는, 케이싱(100)의 밀폐공간 상측에 구동력을 발생하는 전동기구부(200)가 설치되고, 상기 케이싱(100)의 밀폐공간 하측에는 상기 전동기구부(200)에서 발생된 회전력으로 냉매를 압축하는 제1 압축기구부(300) 및 제2 압축기구부(400)가 설치된다.1, a double-acting rotary compressor according to the present invention is provided with a transmission mechanism portion 200 for generating a driving force on the upper side of a closed space of a casing 100, A first compression mechanism 300 and a second compression mechanism 400 for compressing the refrigerant by the rotational force generated in the mechanism unit 200 are provided.

상기 제1 압축기구부(300)는 제1 실린더(310)와, 상부베어링플레이트(이하,상부베어링)(320)와, 제1 롤링피스톤(330)과, 제1 베인(340)과, 제1 토출밸브(350)와, 그리고 제1 머플러(360)로 이루어진다.The first compression mechanism 300 includes a first cylinder 310, an upper bearing plate 320, a first rolling piston 330, a first vane 340, A discharge valve 350, and a first muffler 360.

상기 제2 압축기구부(400)는 제2 실린더(410)와, 하부베어링(420)과, 제2 롤링피스톤(430)과, 제2 베인(440)과, 제2 토출밸브(450)와, 그리고 제2 머플러(460)로 이루어진다.The second compression mechanism 400 includes a second cylinder 410, a lower bearing 420, a second rolling piston 430, a second vane 440, a second discharge valve 450, And a second muffler 460.

상기 제1 실린더(310)와 제2 실린더(410) 사이에는 제1 실린더(310)의 제1 압축공간(V1)과 제2 실린더(410)의 제2 압축공간(V2)을 분리하는 중간베어링플레이트(이하,중간베어링)(500)가 설치된다.An intermediate bearing (not shown) for separating the first compression space V1 of the first cylinder 310 and the second compression space V2 of the second cylinder 410 is disposed between the first cylinder 310 and the second cylinder 410, Plate (hereinafter referred to as intermediate bearing) 500 is provided.

여기서, 상기 케이싱(100)의 하반부에는 어큐뮬레이터(600)에 연결되는 한 개의 흡입관(710)이 연결되고, 상기 케이싱(100)의 상단에는 상기 제1 압축기구부(300)와 제2 압축기구부(400)에서 밀폐공간으로 토출된 냉매가 냉동시스템으로 전달되도록 한 개의 토출관(720)이 연결된다.Here, one suction pipe 710 connected to the accumulator 600 is connected to the lower half of the casing 100, and the first compression mechanism 300 and the second compression mechanism 400 are connected to the upper end of the casing 100. One discharge pipe 720 is connected so that the refrigerant discharged into the closed space is delivered to the refrigeration system.

상기 제1 압축기구부(300)의 제1 흡입구(311)는 상기 흡입관(710)에 직접 연결되고, 상기 제2 압축기구부(400)의 제2 흡입구(411)는 제1 압축기구부(300)의 제1 흡입구(311)에 연통유로(F)를 통해 병렬 연결된다.The first suction port 311 of the first compression mechanism 300 is directly connected to the suction pipe 710, and the second suction port 411 of the second compression mechanism 400 is connected to the first compression mechanism 300. The first suction port 311 is connected in parallel via a communication passage (F).

상기 연통유로(F)는 상기 제1 흡입구(311)의 중간에 형성되는 우회구멍(312)과, 상기 우회구멍(312)과 상기 제2 흡입구(411)가 연통되도록 상기 중간베어링(500)에 형성되는 연통구(511)로 이루어진다.The communication flow path F is connected to the intermediate bearing 500 such that the bypass hole 312 formed in the middle of the first suction port 311 and the bypass hole 312 and the second suction port 411 communicate with each other. It consists of a communication port 511 is formed.

도 2에서와 같이, 상기 제1 흡입구(311)는 반경방향으로 관통 형성되고, 상기 우회구멍(312)은 중간베어링(500)쪽으로 관통 형성되며, 상기 연통구(511)는 축방향으로 관통 형성되고, 상기 제2 흡입구(411)는 제2 압축공간(V2)쪽으로 경사지게 형성된다.As shown in FIG. 2, the first suction port 311 is formed through the radial direction, the bypass hole 312 is formed through the intermediate bearing 500, the communication hole 511 is formed through the axial direction. The second suction port 411 is formed to be inclined toward the second compression space V2.

상기 우회구멍(312)은 제1 흡입구(311)의 직경 보다 작거나 같게 형성될 수 있고, 상기 연통구(511)는 우회구멍(312)과 동일한 직경으로 형성될 수 있으며, 상기 제2 흡입구(411)는 그 출구단이 상기 제2 압축공간(V2)의 내주면으로 연통될 수 있도록 경사지게 형성될 수 있다.The bypass hole 312 may be formed to be smaller than or the same as the diameter of the first suction port 311, the communication hole 511 may be formed to the same diameter as the bypass hole 312, the second suction port ( 411 may be formed to be inclined so that the outlet end can communicate with the inner peripheral surface of the second compression space (V2).

도 3에서와 같이, 상기 우회구멍(312)의 입구단 모서리는 냉매가 상기 제1 흡입구(311)에서 연통구(511)로 원활하게 유입될 수 있도록 라운드지거나 또는 경사지게 형성될 수 있다.As shown in FIG. 3, the inlet end edge of the bypass hole 312 may be rounded or inclined to allow the refrigerant to smoothly flow into the communication port 511 from the first suction port 311.

상기 연통구(511)는 그 체적이 제2 실린더(410)의 압축공간 체적 대비 1% ~ 10% 정도가 될 수 있도록 형성되는 것이 각각의 실린더(310)(410)에 흡입관을 직접 연결하는 것에 비해 압축기 성능이 저하되는 것을 막을 수 있어 바람직하지만, 도 6에서와 같이 상기 연통구(511)의 체적이 제2 실린더(410)의 압축공간(V2) 체적 대비 3% ~ 7% 정도가 되도록 형성되는 것이 압축기 입력을 줄일 수 있어 더 바람직하다.The communication port 511 is formed so that the volume is about 1% to 10% of the volume of the compressed space of the second cylinder 410 to directly connect the suction pipe to each cylinder (310, 410) Although it is preferable to prevent the compressor performance from being lowered, the volume of the communication port 511 is formed to be about 3% to 7% of the volume of the compression space V2 of the second cylinder 410 as shown in FIG. 6. It is more desirable to reduce the compressor input.

상기 제2 흡입구(411)는 도 2 및 도 3에서와 같이 상기 제2 실린더(410)의 내주면 모서리를 절개 가공하여 경사지게 형성될 수도 있고, 도면으로 제시되지는 않았으나 상기 제2 실린더(410)에 경사지도록 관통 형성될 수도 있다.The second suction port 411 may be formed to be inclined by cutting the edge of the inner peripheral surface of the second cylinder 410, as shown in Figures 2 and 3, although not shown in the drawing to the second cylinder 410 It may be formed so as to be inclined.

도면중 미설명 부호인 210은 고정자, 220은 회전자, 230은 회전축이다.In the figure, reference numerals 210 and 210 denote a stator, a rotor, and a rotary shaft, respectively.

상기와 같은 본 발명 복식 로터리 압축기가 가지는 작용 효과는 다음과 같다.The operation and effect of the double rotary compressor of the present invention as described above are as follows.

즉, 상기 전동기구부(200)의 고정자(210)에 전원을 인가하여 상기 회전자(220)가 회전하면, 상기 회전축(230)이 상기 회전자(220)와 함께 회전하면서 상기 전동기구부(200)의 회전력을 상기 제1 압축기구부(300)와 제2 압축기구부(400)에 전달하고, 상기 제1 압축기구부(300)와 제2 압축기구부(400)에서는 각각 제1 롤링피스톤(330)과 제2 롤링피스톤(430)이 상기 각 제1 압축공간(V1)과 제2 압축공간(V2)에서 편심 회전운동을 하면서 상기 제1 베인(340)과 제2 베인(440)과 함께 서로 180°의 위상차를 가지는 흡입실을 형성하여 냉매를 흡입하게 된다.That is, when the rotor 220 rotates by applying power to the stator 210 of the power mechanism unit 200, the rotation shaft 230 rotates together with the rotor 220 while the power mechanism unit 200 is rotated. The rotational force of the first compression mechanism 300 and the second compression mechanism 400, the first compression mechanism 300 and the second compression mechanism 400, respectively, the first rolling piston 330 and the first 2 the rolling piston 430 and the first vane 340 and the second vane 440 together with the first vane 340 and the second vane 440 while eccentric rotational movement in each of the first compression space (V1) and the second compression space (V2) A suction chamber having a phase difference is formed to suck the refrigerant.

예컨대, 도 4에서와 같이 상기 제1 압축공간(V1)이 흡입행정을 시작하면, 냉 매가 어큐뮬레이터(600)와 흡입관(710)을 통해 상기 제1 흡입구(311)로 유입되고, 이 냉매는 상기 제1 흡입구(311)를 통해 제1 압축공간(V1)으로 흡입되어 압축된다. For example, as shown in FIG. 4, when the first compression space V1 starts a suction stroke, refrigerant flows into the first suction port 311 through the accumulator 600 and the suction pipe 710, and the refrigerant flows into the first suction port 311. It is sucked into the first compression space V1 through the first suction port 311 and compressed.

또, 도 5에서와 같이 상기 제1 압축공간(V1)이 압축행정을 진행하는 동안에 그 제1 압축공간(V1)과 180°의 위상차를 가지는 상기 제2 실린더(410)의 제2 압축공간(V2) 역시 흡입행정을 시작하게 된다. 이때, 상기 제2 실린더(410)의 제2 흡입구(411)가 상기 연통구(우회구멍을 포함하여)(511)를 통해 제1 실린더(310)의 제1 흡입구(311)에 연통됨에 따라 상기 흡입관(710)을 거쳐 상기 제1 흡입구(311)로 흡입되는 냉매가 우회구멍(312)과 연통구(511)로 우회하여 제2 흡입구(411)로 유입되고, 이 냉매는 상기 제2 압축공간(V2)으로 흡입되어 압축되는 것이다.In addition, as shown in FIG. 5, the second compression space of the second cylinder 410 having a phase difference of 180 ° with the first compression space V1 during the compression stroke is performed. V2) also starts the suction stroke. In this case, the second suction port 411 of the second cylinder 410 communicates with the first suction port 311 of the first cylinder 310 through the communication port (including the bypass hole) 511. Refrigerant sucked into the first suction port 311 through the suction pipe 710 bypasses the bypass hole 312 and the communication port 511 and flows into the second suction port 411, and the refrigerant flows into the second compression space. It is sucked into V2 and compressed.

이렇게 하여, 한 개의 흡입관(710)으로 흡입되는 냉매가 상기 제1 실린더(310)와 제2 실린더(410) 사이의 연통유로(F)를 통해 상기 제1 압축공간(V1)과 제2 압축공간(V2)으로 번갈아 흡입되도록 함으로써, 각 실린더(310)(410)에 흡입관을 독립적으로 연결하는 것에 비해 부품수를 줄일 수 있을 뿐만 아니라 상기 흡입관(710)을 케이싱(100)과 어큐뮬레이터(600)에 연결하기 위한 조립공수를 줄일 수 있어 생산비용을 절감할 수 있다. In this way, the refrigerant sucked into one suction pipe 710 is communicated with the first compression space V1 and the second compression space through the communication passage F between the first cylinder 310 and the second cylinder 410. By alternately suctioning to (V2), the number of parts can be reduced, as well as the suction pipe 710 to the casing 100 and the accumulator 600, as compared with the independent connection of the suction pipe to each cylinder (310, 410). The manufacturing cost for the connection can be reduced, thereby reducing the production cost.

또, 상기 제1 압축기구부(300)와 제2 압축기구부(400)에서 발생되는 압축기 진동이 한 개의 흡입관(710)으로 전달됨에 따라 복수의 흡입관을 사용하는 것에 비해 공진으로 인한 압축기 진동의 증가를 미연에 방지할 수 있다.Since the vibrations of the compressors generated by the first compression mechanism 300 and the second compression mechanism 400 are transmitted to the single suction pipe 710, the vibration of the compressor due to the resonance is increased It can be prevented in advance.

한편, 본 발명에 의한 복식 로터리 압축기를 용량 가변형 복식 로터리 압축기에도 적용할 수 있다.On the other hand, the double rotary compressor according to the present invention can be applied to a variable displacement double rotary compressor.

예컨대, 본 실시예의 용량 가변형 복식 로터리 압축기는, 도 7에서와 같이 상기 제2 실린더(410)의 제2 베인슬롯(미부호) 후방측에 상기 케이싱(100)의 내부공간과 분리되는 베인챔버(412)가 형성되고, 그 베인챔버(412)에 압축기의 운전모드에 따라 흡입압 또는 토출압을 공급할 수 있는 모드전환수단(800)이 연결되어 구성되는 것이다. 이 경우에도, 상기 제1 실린더(310)의 제1 흡입구(311)에만 흡입관(710)이 연결되고, 상기 제2 실린더(410)의 제2 흡입구(411)는 상기 연통유로(F)를 통해 상기 제1 흡입구(311)와 연통되어 이루어진다. 이에 대한 구체적인 구성과 작용은 전술한 통상적 복식 로터리 압축기와 대동소이하므로 상세한 설명은 생략한다.For example, the variable displacement double rotary compressor of the present embodiment may include a vane chamber separated from an inner space of the casing 100 at a rear side of the second vane slot (unsigned) of the second cylinder 410 as shown in FIG. 7. 412 is formed, and the vane chamber 412 is connected to the mode switching means 800 that can supply the suction pressure or the discharge pressure in accordance with the operation mode of the compressor. Even in this case, the suction pipe 710 is connected only to the first suction port 311 of the first cylinder 310, and the second suction port 411 of the second cylinder 410 is connected through the communication path F. FIG. The first suction port 311 is communicated with. Detailed configuration and operation thereof is similar to the conventional double rotary compressor described above, so a detailed description thereof will be omitted.

본 발명에 의한 로터리 압축기는, 복수의 실린더의 흡입구가 서로 연통되도록 하고 그 중 어느 한 쪽 실린더의 흡입구에만 흡입관이 연결되도록 함으로써, 각 실린더에 흡입관을 독립적으로 연결하는 것에 비해 부품수와 그에 따른 조립공수를 줄여 생산비용이 절감되고 흡입관의 공진으로 인한 압축기 진동의 증가를 미연에 방지할 수 있다.In the rotary compressor according to the present invention, the suction ports of the plurality of cylinders are in communication with each other, and the suction pipes are connected only to the suction ports of either one of them, so that the number of parts and the assembly thereof are higher than those of independently connecting the suction pipes to each cylinder. By reducing the man-hours, the production cost is reduced, and the increase in the vibration of the compressor due to the resonance of the suction pipe can be prevented.

Claims (7)

삭제delete 삭제delete 제1 압축공간과 그 제1 압축공간에 연통되도록 제1 흡입구가 형성되는 제1 실린더;A first cylinder having a first suction port configured to communicate with the first compression space and the first compression space; 제2 압축공간과 그 제2 압축공간에 연통되도록 제2 흡입구가 형성되는 제2 실린더; 및 A second cylinder having a second suction port formed in communication with the second compression space and the second compression space; And 상기 제1 실린더와 제2 실린더 사이에 설치되어 상기 제1 압축공간과 제2 압축공간을 분리하는 중간베어링플레이트;를 포함하고,And an intermediate bearing plate installed between the first cylinder and the second cylinder to separate the first compression space and the second compression space. 상기 제1 흡입구에는 흡입관이 연결되며,A suction pipe is connected to the first suction port, 상기 제2 흡입구는 상기 중간베어링플레이트에 구비된 연통구를 통해 상기 제1 흡입구에 연통되고,The second suction port is in communication with the first suction port through the communication port provided in the intermediate bearing plate, 상기 연통구는 그 체적이 상기 제2 실린더의 압축공간 체적 대비 3 ~ 7% 정도가 되도록 형성되며, The communication port is formed such that the volume is about 3 to 7% of the volume of the compressed space of the second cylinder, 상기 제1 흡입구는 반경방향으로 형성되고, 상기 제2 흡입구는 경사지게 형성되는 것을 특징으로 하는 밀폐형 압축기.The first suction port is formed in a radial direction, the second suction port is characterized in that the inclined compressor. 삭제delete 삭제delete 제3항에 있어서,The method of claim 3, 상기 연통구는 축방향으로 형성되는 것을 특징으로 하는 밀폐형 압축기.The communication port is a hermetic compressor, characterized in that formed in the axial direction. 제3항에 있어서,The method of claim 3, 상기 흡입관은 흡입압의 냉매가 실린더로 공급되도록 어큐뮬레이터에 연결되는 것을 특징으로 하는 밀폐형 압축기.The suction pipe is hermetic compressor, characterized in that connected to the accumulator so that the refrigerant of the suction pressure is supplied to the cylinder.
KR1020060137096A 2006-12-28 2006-12-28 Hermetic compressor KR101311710B1 (en)

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