KR100585810B1 - Modulation type rotary compressor with double shell and operation method - Google Patents

Modulation type rotary compressor with double shell and operation method Download PDF

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Publication number
KR100585810B1
KR100585810B1 KR1020040114328A KR20040114328A KR100585810B1 KR 100585810 B1 KR100585810 B1 KR 100585810B1 KR 1020040114328 A KR1020040114328 A KR 1020040114328A KR 20040114328 A KR20040114328 A KR 20040114328A KR 100585810 B1 KR100585810 B1 KR 100585810B1
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South Korea
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sealed space
refrigerant
casing
pipe
compression unit
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KR1020040114328A
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Korean (ko)
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하삼철
이근형
김진수
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엘지전자 주식회사
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/18Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the volume of the working chamber
    • F04C28/22Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30Rotary-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
    • F04C18/34Rotary-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
    • F04C18/356Rotary-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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00Combinations 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
    • F04C23/001Combinations 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/24Control 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
    • F04C28/26Control 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 using bypass channels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0021Systems for the equilibration of forces acting on the pump
    • F04C29/0035Equalization of pressure pulses
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124Arrangements 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00Fluid
    • F04C2210/26Refrigerants with particular properties, e.g. HFC-134a
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00Manufacture
    • F04C2230/60Assembly methods
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00Rotary kinetic fluid motors or pumps
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00Pumps

Abstract

본 발명은 이중 셀을 구비한 용량 가변형 로터리 압축기 및 그 운전 방법에 관한 것으로, 제1 밀폐공간을 내부에 형성하고 그 제1 밀폐공간을 냉동사이클의 응축기에 연결하는 냉매토출관을 연통 설치하며 상기 제1 밀폐공간에 구동유닛을 설치하고 그 구동유닛의 구동력을 전달받아 냉매를 압축하도록 복수 개의 압축유닛을 설치하는 제1 케이싱과, 제1 케이싱의 외곽에 설치하여 압축기의 운전모드에 따라 한 쪽 압축유닛에서 1단 압축되는 냉매를 다른 압축유닛으로 안내하도록 제2 밀폐공간을 형성하는 제2 케이싱과, 압축기의 운전모드에 따라 냉매의 유동방향을 조절하는 연결유닛을 포함함으로써, 배관과 밸브를 이용하여 압축기의 용량을 용이하게 가변하면서도 상기한 배관과 밸브를 케이싱의 내부에 설치함에 따라 에어콘에 압축기를 조립할 때 조립작업이 용이하고 조립후에도 배관 소음 등을 줄여 압축기의 신뢰성을 높일 수 있다.The present invention relates to a variable displacement rotary compressor having a double cell and a method of operating the same, and having a first discharge space formed therein and communicating with the refrigerant discharge pipe connecting the first sealed space to a condenser of a refrigeration cycle. A first casing for installing a drive unit in a first enclosed space and a plurality of compression units for compressing a refrigerant by receiving a driving force of the drive unit, and one outside of the first casing in accordance with an operation mode of the compressor; A second casing for forming a second sealed space to guide the refrigerant compressed in the first stage to another compression unit, and a connecting unit for adjusting the flow direction of the refrigerant according to the operation mode of the compressor, thereby providing a pipe and a valve. When assembling the compressor to the air conditioner by installing the above pipes and valves inside the casing while easily changing the capacity of the compressor by using It is easy to assemble and reduce the pipe noise after assembling to increase the reliability of the compressor.

Description

이중 셀을 구비한 용량 가변형 로터리 압축기 및 그 운전 방법{MODULATION TYPE ROTARY COMPRESSOR WITH DOUBLE SHELL AND OPERATION METHOD}Variable capacity rotary compressor with dual cell and its operation method {MODULATION TYPE ROTARY COMPRESSOR WITH DOUBLE SHELL AND OPERATION METHOD}
도 1은 본 발명 이중 셀을 구비한 로터리 압축기의 일례를 보인 종단면도,1 is a longitudinal sectional view showing an example of a rotary compressor having a double cell of the present invention;
도 2 및 도 3은 본 발명 이중 셀을 구비한 로터리 압축기에서 각각의 운전모드에 따른 계통도.2 and 3 is a schematic diagram of each operation mode in the rotary compressor with a double cell of the present invention.
**도면의 주요부분에 대한 부호의 설명**** Description of the symbols for the main parts of the drawings **
1 : 구동유닛 2 : 제1 압축유닛1: drive unit 2: first compression unit
3 : 제2 압축유닛 10 : 제1 케이싱3: second compression unit 10: first casing
20 : 제2 케이싱 30 : 연결유닛20: second casing 30: connection unit
31,32 : 제1,제2 흡입측 연결관 33 : 토출측 바이패스관31,32: first and second suction side connecting pipe 33: discharge side bypass pipe
34 : 흡입측 바이패스관 35,36,37 : 제1,제2,제3 개폐밸브34: suction side bypass pipe 35,36,37: 1st, 2nd, 3rd open / close valve
본 발명은 용량 가변형 로터리 압축기에 관한 것으로서, 특히 케이싱을 이중 구조로 하여 용량을 가변할 수 있는 이중 셀을 구비한 용량 가변형 복식 로터리 압축기 및 그 운전 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable displacement rotary compressor, and more particularly, to a variable displacement double rotary compressor having a double cell capable of varying capacity by using a casing as a double structure and a method of operating the same.
일반적으로 압축기는 전기 모터 등의 동력발생장치로부터 동력을 전달받아 공기나 냉매 또는 그 밖의 특수가스에 압축일을 가함으로써 작동가스를 압축시켜 압력을 높여 주는 장치로서 산업전반에 걸쳐 널리 사용되고 있다. 압축기는 압축을 이루는 방식에 따라서 용적형과 터보형으로 분류할 수 있다. 용적형 압축기(positive displacement compressor)는 체적의 감소를 통해 압력을 증가시키는 방식이고, 터보형 압축기(turbo compressor)는 가스의 운동에너지를 압력에너지로 변환시켜 압축을 이루는 방식이다. 용적형 압축기 중 로터리 압축기는 주로 에어컨과 같은 공기조화기에 적용하는 것으로 최근 들어 에어컨의 기능이 다양해지는 추세에 부응하여 로터리 압축기도 용량을 가변할 수 있는 제품을 요구하고 있는 실정이다.In general, a compressor receives power from a power generating device such as an electric motor and compresses working gas to increase pressure by applying compression work to air, refrigerant, or other special gases, and is widely used throughout the industry. Compressors can be classified into volumetric and turbo type, depending on how the compression is achieved. A positive displacement compressor is a method of increasing pressure through volume reduction, and a turbo compressor is a method of converting kinetic energy of gas into pressure energy to achieve compression. Rotary compressors among volumetric compressors are mainly applied to air conditioners such as air conditioners, and in recent years, rotary compressors also require products that can vary in capacity in response to a trend of varying functions of air conditioners.
로터리 압축기에서 용량을 가변하는 기술로는 주로 인버터 모터를 채용하여 압축기의 회전수를 제어하는 소위 인버터 방식이 알려져 있으나, 이 기술은 인버터 모터 자체가 고가여서 원가 부담이 클 뿐만 아니라 통계상 대부분의 에어콘은 냉방기로 사용하는 점을 감안할 때 에어콘용 압축기에서 더욱 중요한 냉방조건에서의 냉동능력을 높이는 것이 오히려 난방조건에서의 냉동능력을 높이는 것에 비해 어렵다는 한계가 있었다.As a technique for varying the capacity of a rotary compressor, a so-called inverter method that controls the number of revolutions of the compressor by using an inverter motor is mainly known, but this technique is expensive because the inverter motor itself is expensive, and most of the air conditioners are statistically Considering that it is used as a air conditioner, there is a limit that it is difficult to increase the refrigerating capacity under heating conditions, rather than to increase the refrigerating capacity under the more important cooling conditions in the air conditioner compressor.
또, 종래의 로터리 압축기는 대개 한 개의 셀로 이루어져 용량 가변을 위하여는 복잡한 배관과 수 개의 외부 밸브를 구비함에 따라 에어콘에 장착할 때 조립 공정이 복잡하고 난해할 뿐만 아니라 조립 후 배관에 의한 진동이 가중되는 문제점도 있었다. In addition, the conventional rotary compressor is usually composed of one cell and has a complex pipe and several external valves for varying the capacity, so that the assembling process is complicated and difficult when mounting to the air conditioner, and the vibration caused by the pipe after assembly is increased. There was also a problem.
본 발명은 상기한 종래 기술의 문제점을 감안하여 안출한 것으로, 인버터모터를 사용하지 않고도 압축기 용량을 안정적으로 가변할 수 있을 뿐만 아니라 배관이나 외부 밸브를 간소화하여 조립이 용이하고 배관 진동을 줄일 수 있는 이중 셀을 구비한 용량 가변형 로터리 압축기 및 그 운전 방법을 제공하려는데 본 발명의 목적이 있다.  The present invention has been made in view of the above-described problems of the prior art, it is possible to stably change the compressor capacity without using an inverter motor, as well as to simplify the pipe or external valve assembly and to reduce the pipe vibration An object of the present invention is to provide a variable displacement rotary compressor having a double cell and a method of operating the same.
본 발명의 목적을 달성하기 위하여, 제1 밀폐공간을 내부에 형성하고 그 제1 밀폐공간을 냉동사이클의 응축기에 연결하는 냉매토출관을 연통 설치하며 상기 제1 밀폐공간에 구동유닛을 설치하고 그 구동유닛의 구동력을 전달받아 냉매를 압축하도록 복수 개의 압축유닛을 설치하는 제1 케이싱과, 제1 케이싱의 외곽에 설치하여 압축기의 운전모드에 따라 한 쪽 압축유닛에서 1단 압축되는 냉매를 다른 압축유닛으로 안내하도록 제2 밀폐공간을 형성하는 제2 케이싱과, 압축기의 운전모드에 따라 냉매의 유동방향을 조절하는 연결유닛을 포함한 이중 셀을 구비한 용량 가변형 로터리 압축기를 제공한다.In order to achieve the object of the present invention, to form a first sealed space therein and to connect the refrigerant discharge pipe connecting the first sealed space to the condenser of the refrigeration cycle in communication and to install a drive unit in the first sealed space Compressing the first casing for installing a plurality of compression units to receive the driving force of the drive unit to compress the refrigerant, and the refrigerant being compressed in one stage in one compression unit according to the operation mode of the compressor by installing a plurality of compression units in the outer casing Provided is a variable displacement rotary compressor including a second casing forming a second sealed space to guide the unit, and a double cell including a connecting unit for adjusting a flow direction of the refrigerant according to an operation mode of the compressor.
또, 앞에서 파워모드인 경우에는 흡입측 연결관에 설치한 개폐밸브만 열고 다른 개폐밸브는 차단하여 냉매가 증발기에서 각 압축유닛으로 흡입되어 압축된 후 제1 케이싱의 제1 밀폐공간으로 토출되도록 하는 반면, 세이빙모드인 경우에는 흡입측 연결관에 설치한 개폐밸브만 닫고 다른 개폐밸브는 열어 냉매가 증발기에서 제2 압축유닛으로만 흡입되도록 하고 이 제2 압축유닛에서 1단 압축되는 냉매가 제2 케이싱의 제2 밀폐공간으로 유도되었다가 다시 제1 압축유닛으로 흡입되어 2단 압축된 후 제1 케이싱의 제1 밀폐공간으로 토출되도록 하는 것을 특징으로 하는 용량 가변형 다중 로터리 압축기의 운전 방법을 제공한다.In the case of the power mode, only the on / off valve installed on the suction side connection pipe is opened and the other on / off valve is blocked so that the refrigerant is sucked into each compression unit from the evaporator, compressed, and discharged into the first sealed space of the first casing. On the other hand, in the saving mode, only the on-off valve installed on the suction side connection pipe is opened and the other on-off valve is opened so that the refrigerant is sucked into the second compression unit from the evaporator and the refrigerant compressed in the first stage by the second compression unit is second. Provided is a method of operating a variable displacement multiple rotary compressor characterized in that guided to the second sealed space of the casing and then sucked back into the first compression unit and compressed into two stages and then discharged to the first sealed space of the first casing. .
이하, 본 발명에 의한 이중 셀을 구비한 용량 가변형 로터리 압축기 및 그 운전 방법을 첨부도면에 의거하여 상세하게 설명한다.Hereinafter, a variable displacement rotary compressor having a double cell according to the present invention and a driving method thereof will be described in detail with reference to the accompanying drawings.
도 1은 본 발명 이중 셀을 구비한 로터리 압축기의 일례를 보인 종단면도이고, 도 2 및 도 3은 본 발명 이중 셀을 구비한 로터리 압축기에서 각각의 운전모드에 따른 계통도이다.1 is a longitudinal sectional view showing an example of a rotary compressor having a double cell of the present invention, and FIGS. 2 and 3 are schematic diagrams of respective operation modes in the rotary compressor having a double cell of the present invention.
이에 도시한 바와 같이 본 발명에 의한 이중 셀을 구비한 용량 가변형 로터리 압축기는, 제1 밀폐공간(S1)을 내부에 형성하고 그 제1 밀폐공간(S1)에 구동력을 발생하는 구동유닛(1) 및 그 구동유닛(1)에 연결하여 냉매를 압축하도록 설치하는 제1 압축유닛(2)과 제2 압축유닛(3)을 구비하는 제1 케이싱(10)과, 제1 케이싱(10)의 외곽에 제2 밀폐공간(S2)을 구비하여 설치하는 제2 케이싱(20)과, 압축기의 운전모드에 따라 양쪽 압축유닛(2)(3)에서 모두 냉매를 압축하도록 하거나 한 쪽 압축유닛(2)에서 1단 압축하고 나서 다른 압축유닛(3)에서 2단 압축할 수 있도록 냉매를 안내하는 연결유닛(30)으로 구성한다.As shown in the drawing, the variable displacement rotary compressor having a double cell according to the present invention includes a drive unit 1 that forms a first sealed space S1 therein and generates a driving force in the first sealed space S1. And a first casing 10 having a first compression unit 2 and a second compression unit 3 connected to the drive unit 1 so as to compress the refrigerant, and an outer portion of the first casing 10. The second casing 20 provided with a second sealed space S2 in the air, and both the compression units 2 and 3 compress the refrigerant according to the operation mode of the compressor, or the one compression unit 2. In the first stage of compression in the other compression unit (3) consists of a connecting unit (30) for guiding the refrigerant to be compressed in two stages.
구동유닛(1)은 제1 케이싱(10)의 내부에 고정하여 외부에서 전원을 인가하는 고정자(1a)와, 고정자(1a)의 내부에 일정 공극을 두고 배치하여 상기 고정자(1a)와 상호 작용하면서 회전하는 회전자(1b)와, 회전자(1b)와 일체로 결합하여 구동력을 압축유닛(2)(3)으로 전달하는 회전축(1c)으로 이루어진다. 여기서, 구동유닛(1)은 정속 모터로 구성하는 것이 제어 드라이브를 구비하는 인버터 모터보다 가격이 저 렴하여 바람직하나, 경우에 따라서는 인버터 모터로 구성할 수도 있다.The drive unit 1 is fixed to the inside of the first casing 10 to apply power from the outside, and arranged with a predetermined gap inside the stator 1a to interact with the stator 1a. Rotor 1b that rotates while being rotated integrally with the rotor 1b to transmit driving force to the compression units 2 and 3, respectively. Here, the drive unit 1 is preferably configured as a constant speed motor because it is cheaper than an inverter motor having a control drive, but may be configured as an inverter motor in some cases.
제1 압축유닛(2)은 환형으로 형성하여 제1 케이싱(10)의 내부에 설치하는 제1 실린더(2a)와, 제1 실린더(2a)의 상하 양측을 복개하여 함께 제1 내부공간을 이루면서 회전축(1c)을 반경방향 및 축방향으로 지지하는 상부베어링(2b) 및 중간베어링(2c)과, 회전축(1c)의 상측 편심부에 삽입하여 제1 실린더(2a)의 제1 내부공간에서 선회하면서 냉매를 압축하는 제1 롤링피스톤(2d)과, 제1 롤링피스톤(2d)의 외주면에 압접하도록 제1 실린더(2a)에 반경 방향으로 이동 가능하게 결합하여 상기 제1 실린더(2a)의 제1 내부공간을 제1 흡입실과 제1 압축실로 각각 구획하는 제1 베인(미도시)과, 상부베어링(2b)에 설치하여 제1 압축실에서 토출되는 냉매의 토출을 조절하는 제1 토출밸브(2e)와, 제1 토출밸브(2e)를 수용하여 상부베어링(2b)에 설치하는 상부머플러(2f)로 이루어진다.The first compression unit 2 is formed in an annular shape to cover the first cylinder 2a installed inside the first casing 10 and the upper and lower sides of the first cylinder 2a to form a first internal space together. The upper bearing 2b and the intermediate bearing 2c which support the rotating shaft 1c in the radial direction and the axial direction, and inserted in the upper eccentric part of the rotating shaft 1c, are turning in the 1st internal space of the 1st cylinder 2a. While the first rolling piston (2d) for compressing the refrigerant and the first cylinder (2a) to be movable in a radial direction so as to be in pressure contact with the outer circumferential surface of the first rolling piston (2d) of the first cylinder (2a) A first vane (not shown) for dividing an internal space into a first suction chamber and a first compression chamber, respectively, and a first discharge valve installed in the upper bearing 2b to control discharge of refrigerant discharged from the first compression chamber ( 2e) and an upper muffler 2f for accommodating the first discharge valve 2e and installed on the upper bearing 2b.
제2 압축유닛(3)은 환형으로 형성하여 상기 제1 실린더(2a) 하측에 위치하며 상기 중간베어링(2c)에 접촉하는 제2 실린더(3a)와, 제2 실린더(3a)의 상면에 결합하여 함께 제2 내부공간을 이루면서 상기 회전축(1c)을 축방향으로 지지하는 하부베어링(3b)과, 회전축(1c)의 하측 편심부에 회전 가능하게 결합하여 상기 제2 실린더(3a)의 제2 내부공간에 위치하는 압축하는 제2 롤링피스톤(3c)과, 제2 롤링피스톤(3c)의 외주면에 압접하도록 제2 실린더(3a)에 반경방향으로 이동 가능하게 결합하여 상기 제2 실린더(3a)의 제2 내부공간을 제2 흡입실과 제2 압축실로 구획하는 제2 베인(미도시)과, 중간베어링(2c)의 일측에 설치하는 제2 압축실에서 토출되는 냉매의 토출을 조절하는 제2 토출밸브(3d)와, 제2 토출밸브(3d)를 수용하여 하 부베어링(3b)에 설치하는 하부머플러(3e)로 이루어진다. 또, 하부머플러(3e)의 일측에는 제1 케이싱(10)을 관통하여 제2 케이싱(20)의 제2 밀폐공간(S2)으로 연통하도록 후술할 토출측 바이패스관(33)을 연통 설치하고, 타측에는 상기한 토출측 바이패스관(33)의 개폐 여부에 따라 변하는 하부머플러(3e) 내부와 제1 밀폐공간(S1) 사이의 압력차에 따라 개폐되면서 냉매의 유동방향을 조절하는 체크밸브(3f)를 설치한다. The second compression unit 3 is formed in an annular shape and is positioned below the first cylinder 2a and coupled to the second cylinder 3a contacting the intermediate bearing 2c and the upper surface of the second cylinder 3a. The lower bearing 3b for supporting the rotating shaft 1c in the axial direction and rotatably coupled to the lower eccentric portion of the rotating shaft 1c while forming a second inner space together with the second inner space of the second cylinder 3a. The second rolling piston 3c positioned in the inner space and the second cylinder 3a are radially movably coupled to the second cylinder 3a so as to be press-contacted to the outer circumferential surface of the second rolling piston 3c. Second vanes (not shown) for dividing the second internal space of the second suction chamber and the second compression chamber and a second discharge chamber for controlling the discharge of the refrigerant discharged from the second compression chamber installed at one side of the intermediate bearing 2c. With a lower muffler 3e for accommodating the discharge valve 3d and the second discharge valve 3d and installed in the lower bearing 3b. The lure is. In addition, a discharge side bypass pipe 33, which will be described later, communicates with one side of the lower muffler 3e so as to communicate with the second sealed space S2 of the second casing 20 through the first casing 10, The other side check valve (3f) to control the flow direction of the refrigerant while opening and closing according to the pressure difference between the inside of the lower muffler (3e) and the first sealed space (S1) that changes depending on whether the discharge side bypass pipe 33 is opened or closed Install).
제1 케이싱(10)은 냉동사이클의 증발기 출구(보다 정확하게는 어큐뮬레이터의 출구)에 각각의 압축유닛(2)(3)을 연통하도록 제1 냉매흡입관(11)과 제2 냉매흡입관(12)을 연결 설치하고, 냉동사이클의 응축기 입구에 제1 밀폐공간(S1)을 연통하도록 한 개의 냉매토출관(13)을 관통 설치하여 이루어진다.The first casing 10 connects the first refrigerant suction pipe 11 and the second refrigerant suction pipe 12 to communicate each of the compression units 2 and 3 to the evaporator outlet of the refrigeration cycle (more precisely, the outlet of the accumulator). It is connected to the installation, and made through the installation of one refrigerant discharge pipe 13 to communicate the first sealed space (S1) to the condenser inlet of the refrigeration cycle.
제2 케이싱(20)은 제1 케이싱(10)의 외곽을 감싸 밀봉하도록 용접 결합하고, 그 일측에는 상기한 제1 냉매흡입관(11)과 제2 냉매흡입관(12)을 상기 어큐뮬레이터(A)의 출구에 연통하도록 후술할 제1 흡입측 연결관(31)과 제2 흡입측 연결관(32)을 관통 설치하여 이루어진다. 또, 제2 케이싱(20)의 제2 밀폐공간(S2) 일측에는 후술할 하부머플러(3e)에서 제1 케이싱(10)을 관통하여 연결하는 토출측 바이패스관(33)을 설치하고, 제2 케이싱(20)의 제2 밀폐공간(S2) 타측에는 상기한 토출측 바이패스관(33)에 연통하여 제1 흡입측 연결관(31)에 연결하는 흡입측 바이패스관(34)을 설치하여 이루어진다.The second casing 20 is welded to seal the outer periphery of the first casing 10, and at one side thereof, the first refrigerant suction pipe 11 and the second refrigerant suction pipe 12 are connected to each other of the accumulator A. It is made by passing through the first suction side connecting pipe 31 and the second suction side connecting pipe 32 which will be described later to communicate with the outlet. In addition, one side of the second sealed space S2 of the second casing 20 is provided with a discharge side bypass pipe 33 connected through the first casing 10 in the lower muffler 3e to be described later, and the second The other side of the second sealed space S2 of the casing 20 is provided with a suction side bypass pipe 34 connected to the discharge side bypass pipe 33 and connected to the first suction side connecting pipe 31. .
연결유닛(30)은 어큐뮬레이터(4)의 출구측에서 분관되어 각각의 냉매흡입관(11)(12)을 통해 각 실린더(2a)(3a)의 흡입측에 연결하는 제1 흡입측 연결관(31) 및 제2 흡입측 연결관(32)과, 하부머플러(3e)의 일측에 설치하여 그 하부머플러(3e)의 내부공간을 제2 케이싱(20)의 제2 밀폐공간(S2)에 연통시키는 토출측 바이패스관(33)과, 제2 밀폐공간(S2)의 내부에서 제1 흡입측 연결관(31)에 연결하는 흡입측 바이패스관(34)과, 제1 흡입측 연결관(31)과 토출측 바이패스관(33) 그리고 흡입측 바이패스관(34)의 중간에 설치하여 2방향 밸브로 구성하여 각 관의 내부를 통과하는 냉매를 조절하는 제1,제2,제3 개폐밸브(35)(36)(37)로 이루어진다.The connecting unit 30 is branched at the outlet side of the accumulator 4 and connected to the suction side of each cylinder 2a and 3a via respective refrigerant suction pipes 11 and 12. ) And the second suction side connecting pipe 32 and one side of the lower muffler 3e to communicate the inner space of the lower muffler 3e with the second sealed space S2 of the second casing 20. The discharge side bypass pipe 33, the suction side bypass pipe 34 connected to the first suction side connecting pipe 31 inside the second sealed space S2, and the first suction side connecting pipe 31. First, second and third open / close valves disposed in the middle of the discharge side bypass pipe 33 and the suction side bypass pipe 34 and configured as a two-way valve to control the refrigerant passing through the inside of each pipe ( 35) 36 and 37.
도면중 미설명 부호인 F는 냉매유로이다.In the drawings, reference numeral F denotes a refrigerant passage.
상기와 같은 본 발명 용량 가변형 다중 로터리 압축기는 다음과 같은 작용 효과가 있다.The present invention variable capacity multiple rotary compressor as described above has the following effects.
즉, 구동유닛(1)의 고정자(1a)에 전원을 인가하여 회전자(1b)가 회전하면, 회전축(1c)이 회전자(1b)와 함께 회전하면서 구동유닛(1)의 회전력을 제1 압축유닛(2)과 제2 압축유닛(3)에 전달하고, 에어콘에서의 필요 용량에 따라 각각의 개폐밸브를 적절하게 조절하여 파워모드로 운전하면서 대용량의 냉력을 발생하거나 세이빙운전을 실시하면서 소용량의 냉력을 발생한다.That is, when the rotor 1b is rotated by applying power to the stator 1a of the drive unit 1, the rotating shaft 1c rotates together with the rotor 1b and the rotational force of the drive unit 1 is firstly increased. It delivers to the compression unit 2 and the second compression unit 3, and adjusts each opening and closing valve appropriately according to the required capacity in the air conditioner to generate a large amount of cooling power while operating in a power mode, or to carry out a saving operation. Will cause the cold power.
예컨대, 파워모드로 운전하는 경우에는 도 2에서와 같이 제1 개폐밸브(35)를 열고 제2 개폐밸브(36)와 제3 개폐밸브(37)는 닫아 증발기를 통과한 냉매가 제1 압축유닛(2)의 제1 실린더(2a)와 제2 압축유닛(3)의 제2 실린더(3a)로 모두 흡입되도록 하여 양쪽 압축유닛(2)(3)에서 냉매가 압축된 후 제1 케이싱(10)의 제1 밀폐공간(S1)으로 토출되었다가 냉매토출관(13)을 통해 응축기로 안내되어 100%의 냉력을 발생한다. 이때, 하부머플러(3e)에 설치하는 체크밸브(3f)는 제2 개폐밸브(36)가 닫힘에 따라 하부머플러(3e) 내부의 압력이 제1 밀폐공간(S1)의 압력 보다 높아져 상기한 체크밸브(3f)가 열리면서 하부머플러(3e)로 토출되는 냉매가 제1 밀폐공간(S1)으로 배출되어 냉매유로(F)를 통해 냉매토출관(DP)으로 이동하도록 하는 것이다.For example, when operating in the power mode, as shown in FIG. 2, the first on-off valve 35 is opened, the second on-off valve 36 and the third on-off valve 37 are closed, and the refrigerant passing through the evaporator is first compressed unit. Both the first cylinder 2a of (2) and the second cylinder 3a of the second compression unit 3 are sucked into the first casing 10 after the refrigerant is compressed in both compression units 2 and 3. Discharged into the first sealed space (S1) and is guided to the condenser through the refrigerant discharge pipe (13) to generate 100% of the cooling force. At this time, the check valve 3f installed in the lower muffler 3e has a higher pressure inside the lower muffler 3e than the pressure in the first sealed space S1 as the second on / off valve 36 is closed. As the valve 3f is opened, the refrigerant discharged to the lower muffler 3e is discharged to the first sealed space S1 to move to the refrigerant discharge pipe DP through the refrigerant passage F.
반면, 세이빙모드로 운전하는 경우에는 도 3에서와 같이 제1 개폐밸브(35)는 닫고 제2 개폐밸브(36)와 제3 개폐밸브(37)를 열어 제2 압축유닛(3)으로만 냉매가 흡입되도록 하였다가 이 제2 압축유닛(3)에서 1단 압축되어 하부머플러(3e)로 토출되는 냉매는 토출측 바이패스관(33)을 통해 제2 밀폐공간(S2)으로 이동하고 이후 흡입측 바이패스관(34)을 통해 다시 제1 압축유닛(2)으로 공급되어 2단 압축된 후 상부머플러(2f)를 통해 제1 밀폐공간(S1)으로 배출되었다가 냉매토출관(13)을 통해 응축기로 안내되어 제2 압축유닛(3)의 용량만큼 냉력을 발생한다. 이때, 하부머플러(3e)에 설치하는 체크밸브(3f)는 제2 개폐밸브(36)가 열림에 따라 하부머플러(3e) 내부의 압력이 제1 밀폐공간(S1)의 압력 보다 낮아져 상기한 체크밸브(3f)는 닫힘 상태를 유지하면서 하부머플러(3e)로 토출되는 냉매가 제2 밀폐공간(S2)으로 이동하도록 하는 것이다.On the other hand, when operating in the saving mode, as shown in FIG. 3, the first on / off valve 35 is closed and the second on / off valve 36 and the third on / off valve 37 are opened to cool the refrigerant only to the second compression unit 3. Refrigerant is sucked in the second compression unit (3) and the refrigerant discharged into the lower muffler (3e) is moved to the second sealed space (S2) through the discharge side bypass pipe 33, and then the suction side After being supplied to the first compression unit 2 through the bypass pipe 34 and compressed in two stages, it is discharged into the first sealed space S1 through the upper muffler 2f and then through the refrigerant discharge pipe 13. Guided to the condenser generates a cooling force by the capacity of the second compression unit (3). At this time, the check valve 3f installed in the lower muffler 3e has the pressure inside the lower muffler 3e lower than the pressure of the first sealed space S1 as the second on / off valve 36 opens. The valve 3f allows the refrigerant discharged to the lower muffler 3e to move to the second sealed space S2 while maintaining the closed state.
본 발명에 의한 이중 셀을 구비한 용량 가변형 로터리 압축기 및 그 운전 방법은, 배관과 밸브를 이용하여 압축기의 용량을 용이하게 가변하면서도 상기한 배관과 밸브를 케이싱의 내부에 설치함에 따라 에어콘에 압축기를 조립할 때 조립작업이 용이하고 조립후에도 배관 소음 등을 줄여 압축기의 신뢰성을 높일 수 있다.The variable displacement rotary compressor having a double cell according to the present invention and a method of operating the same have a variable capacity of the compressor by easily using a pipe and a valve, and the compressor is installed in the air conditioner by installing the pipe and the valve inside the casing. When assembling, it is easy to assemble and reduce the pipe noise after assembling to increase the reliability of the compressor.

Claims (5)

  1. 제1 밀폐공간을 내부에 형성하고 그 제1 밀폐공간을 냉동사이클의 응축기에 연결하는 냉매토출관을 연통 설치하며 상기 제1 밀폐공간에 구동유닛을 설치하고 그 구동유닛의 구동력을 전달받아 냉매를 압축하도록 복수 개의 압축유닛을 설치하는 제1 케이싱과,The first sealed space is formed inside, and the refrigerant discharge pipe connecting the first sealed space to the condenser of the refrigeration cycle is installed in communication with the drive unit is installed in the first sealed space and the driving force of the drive unit is delivered to the refrigerant A first casing for installing a plurality of compression units to compress the first casing;
    제1 케이싱의 외곽에 설치하여 압축기의 운전모드에 따라 한 쪽 압축유닛에서 1단 압축되는 냉매를 다른 압축유닛으로 안내하도록 제2 밀폐공간을 형성하는 제2 케이싱과,A second casing installed at an outer side of the first casing to form a second sealed space to guide the refrigerant compressed in one stage from one compression unit to the other compression unit according to the operation mode of the compressor;
    압축기의 운전모드에 따라 냉매의 유동방향을 조절하는 연결유닛을 포함한 이중 셀을 구비한 용량 가변형 로터리 압축기.A variable displacement rotary compressor having a double cell including a connecting unit for adjusting the flow direction of the refrigerant according to the operation mode of the compressor.
  2. 제1항에 있어서,The method of claim 1,
    제1 압축유닛은 그 토출측이 제1 밀폐공간에 연통하도록 형성하고,The first compression unit is formed so that the discharge side is in communication with the first sealed space,
    제2 압축유닛은 그 토출측의 일측은 제1 밀폐공간에 연통하도록 형성하는 반면 타측은 제2 밀폐공간에 선택적으로 연통하도록 형성하는 것을 특징으로 하는 이중 셀을 구비한 용량 가변형 로터리 압축기.The second compression unit is a variable displacement type rotary compressor having a double cell, characterized in that the one side of the discharge side is formed so as to communicate with the first sealed space while the other side is formed to selectively communicate with the second sealed space.
  3. 제2항에 있어서,The method of claim 2,
    연결유닛은 냉동사이클의 증발기 출구에서 각 압축유닛의 흡입측에 각각 독 립적으로 연결하는 복수 개의 흡입측 연결관과, 제2 압축유닛의 한 쪽 토출측을 제2 밀폐공간에 연통하는 토출측 바이패스관과, 제2 밀폐용기의 내부에서 제1 압축유닛의 흡입측에 연결한 흡입측 연결관의 중간에 연결하는 흡입측 바이패스관과, 제1 압축유닛에 연결하는 흡입측 연결관과 토출측 바이패스관 그리고 흡입측 바이패스관에 각각 설치하여 냉매의 유동을 조절하는 수 개의 개폐밸브로 이루어진 것을 특징으로 하는 이중 셀을 구비한 용량 가변형 로터리 압축기.The connection unit includes a plurality of suction side connecting pipes independently connected to the suction side of each compression unit at the evaporator outlet of the refrigeration cycle, and a discharge side bypass pipe communicating one discharge side of the second compression unit to the second sealed space. And a suction side bypass pipe connected to the middle of the suction side connecting pipe connected to the suction side of the first compression unit in the second hermetic container, and a suction side connecting pipe and the discharge side bypass connected to the first compression unit. A variable capacity rotary compressor having a double cell, comprising a plurality of opening and closing valves respectively installed in the pipe and the suction side bypass pipe to regulate the flow of the refrigerant.
  4. 제3항에 있어서,The method of claim 3,
    제2 압축유닛에서 제1 밀폐공간에 연통하도록 하는 일측 토출측에는 토출측 바이패스관의 개폐밸브가 닫혔을 때 열리도록 체크밸브를 설치하는 것을 특징으로 하는 이중 셀을 구비한 용량 가변형 로터리 압축기.A variable displacement type rotary compressor having a double cell, characterized in that a check valve is provided on one side of the discharge side to allow the second compression unit to communicate with the first sealed space so that the valve is opened when the on / off valve of the discharge side bypass pipe is closed.
  5. 제3항에서 파워모드인 경우에는 흡입측 연결관에 설치한 개폐밸브만 열고 다른 개폐밸브는 차단하여 냉매가 증발기에서 각 압축유닛으로 흡입되어 압축된 후 제1 케이싱의 제1 밀폐공간으로 토출되도록 하는 반면,In the power mode of claim 3, only the on-off valve installed on the suction side connection pipe is opened, and other on-off valves are blocked so that the refrigerant is sucked into each compression unit from the evaporator, compressed, and discharged into the first sealed space of the first casing. In contrast,
    세이빙모드인 경우에는 흡입측 연결관에 설치한 개폐밸브만 닫고 다른 개폐밸브는 열어 냉매가 증발기에서 제2 압축유닛으로만 흡입되도록 하고 이 제2 압축유닛에서 1단 압축되는 냉매가 제2 케이싱의 제2 밀폐공간으로 유도되었다가 다시 제1 압축유닛으로 흡입되어 2단 압축된 후 제1 케이싱의 제1 밀폐공간으로 토출되도록 하는 것을 특징으로 하는 용량 가변형 다중 로터리 압축기의 운전 방법.In the saving mode, only the on / off valve installed on the suction side connection pipe is opened and other on / off valves are opened so that the refrigerant is sucked into the second compression unit only from the evaporator. The method of operating a variable displacement multi-rotary compressor characterized in that guided to the second sealed space and sucked back into the first compression unit is compressed in two stages and then discharged to the first sealed space of the first casing.
KR1020040114328A 2004-12-28 2004-12-28 Modulation type rotary compressor with double shell and operation method KR100585810B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101376872B1 (en) 2011-07-28 2014-03-20 미쓰비시덴키 가부시키가이샤 Two stage rotary compressor
CN104121200A (en) * 2014-07-16 2014-10-29 珠海凌达压缩机有限公司 Rotating compressor and air conditioner
CN104728109A (en) * 2015-02-03 2015-06-24 广东美芝制冷设备有限公司 Air conditioning system and rotating compressor component thereof

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Publication number Priority date Publication date Assignee Title
JPS59190990U (en) 1983-06-06 1984-12-18
JPH05172076A (en) * 1991-10-23 1993-07-09 Mitsubishi Electric Corp Multicylinder rotary compressor
JPH11132177A (en) 1997-10-30 1999-05-18 Toshiba Corp Rotary compressor
JP2004245177A (en) 2003-02-17 2004-09-02 Sanyo Electric Co Ltd Compressor

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Publication number Priority date Publication date Assignee Title
JPS59190990U (en) 1983-06-06 1984-12-18
JPH05172076A (en) * 1991-10-23 1993-07-09 Mitsubishi Electric Corp Multicylinder rotary compressor
JPH11132177A (en) 1997-10-30 1999-05-18 Toshiba Corp Rotary compressor
JP2004245177A (en) 2003-02-17 2004-09-02 Sanyo Electric Co Ltd Compressor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101376872B1 (en) 2011-07-28 2014-03-20 미쓰비시덴키 가부시키가이샤 Two stage rotary compressor
CN104121200A (en) * 2014-07-16 2014-10-29 珠海凌达压缩机有限公司 Rotating compressor and air conditioner
CN104728109A (en) * 2015-02-03 2015-06-24 广东美芝制冷设备有限公司 Air conditioning system and rotating compressor component thereof

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