KR20210083443A - Variable displacement swash plate type compressor - Google Patents

Variable displacement swash plate type compressor Download PDF

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Publication number
KR20210083443A
KR20210083443A KR1020190175229A KR20190175229A KR20210083443A KR 20210083443 A KR20210083443 A KR 20210083443A KR 1020190175229 A KR1020190175229 A KR 1020190175229A KR 20190175229 A KR20190175229 A KR 20190175229A KR 20210083443 A KR20210083443 A KR 20210083443A
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KR
South Korea
Prior art keywords
hole
swash plate
chamber
cylinder block
passage
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KR1020190175229A
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Korean (ko)
Inventor
서문원
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두원중공업(주)
학교법인 두원학원
주식회사 두원전자
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Priority to KR1020190175229A priority Critical patent/KR20210083443A/en
Publication of KR20210083443A publication Critical patent/KR20210083443A/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1036Component parts, details, e.g. sealings, lubrication
    • F04B27/109Lubrication
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/0873Component parts, e.g. sealings; Manufacturing or assembly thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1009Distribution members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/06Cooling; Heating; Prevention of freezing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00Check valves
    • F16K15/02Check valves with guided rigid valve members
    • F16K15/025Check valves with guided rigid valve members the valve being loaded by a spring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/14Control
    • F04B27/16Control of pumps with stationary cylinders
    • F04B27/18Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B27/1804Controlled by crankcase pressure
    • F04B2027/1822Valve-controlled fluid connection
    • F04B2027/1827Valve-controlled fluid connection between crankcase and discharge chamber
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00Working fluid
    • F05B2210/10Kind or type
    • F05B2210/14Refrigerants with particular properties, e.g. HFC-134a
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00Function
    • F05B2260/98Lubrication

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

According to the present invention, provided is a capacity-variable swash plate type compressor including: a cylinder block having a plurality of cylinder bores formed in parallel with each other; a front housing combined with a front side of the cylinder block, and having a crank chamber formed therein; a driving shaft provided in the front housing to be rotatable, and having a driving shaft connection passage formed along the center to be connected to the crank chamber; a swash plate installed on the circumference of the driving shaft to be connected with a piston; a rear housing combined with a rear side of the cylinder block, and having a suction chamber and a discharge chamber formed therein; a valve plate placed in a connection part of the cylinder block and the rear housing, and having first and second CS holes formed thereon; a CS passage formed on the cylinder block to connect the crank chamber to the suction chamber through the second CS hole; first and second oil passages connecting the CS passage with an elastic chamber; and a CS valve body provided in the CS passage, and opening and closing the first and second oil passages with a pressure difference between the crank chamber and the suction chamber. Therefore, the capacity-variable swash plate type compressor is capable of reducing power consumption by reducing the size of a CS hole while discharging oil of the crank chamber to the suction chamber, with a difference in pressure between the crank chamber and the suction chamber, on a variable condition of the swash plate, and preventing a rise in the temperature of the compressor caused by high-speed driving.

Description

용량 가변형 사판식 압축기{Variable displacement swash plate type compressor}Variable displacement swash plate type compressor

본 발명은 용량 가변형 사판식 압축기에 관한 것으로, 더욱 상세하게는 사판의 가변조건 시, 크랭크실 압력과 흡입실 압력의 차압으로, 크랭크실의 오일을 흡입실로 배출함과 동시에 CS홀의 크기가 작아져 소요 동력을 저감할 수 있고, 고속 운전에 따른 압축기 온도 상승을 방지하는 용량 가변형 사판식 압축기에 관한 것이다.The present invention relates to a variable-capacity swash plate compressor, and more particularly, when the swash plate is variable, the differential pressure between the crankcase pressure and the suction chamber pressure discharges oil from the crankcase into the suction chamber and the size of the CS hole becomes smaller. It relates to a variable capacity swash plate compressor capable of reducing power required and preventing a compressor temperature rise due to high-speed operation.

일반적으로 압축기는 외부의 동력을 공급받아 유체를 압축하는 장치로서, 공조 장치 또는 냉각 장치 등에서 많이 사용된다.In general, a compressor is a device for compressing a fluid by receiving external power, and is widely used in an air conditioner or a cooling device.

이중, 자동차용 공조장치를 구성하는 압축기는 동력원으로부터의 동력을 전자클러치의 단속 작용에 의하여 선택적으로 전달받아 증발기로부터 냉매가스를 내부에 흡입하여 피스톤의 직선왕복운동에 의하여 압축한 후 응축기쪽으로 토출한다.Among them, the compressor constituting the automobile air conditioner selectively receives power from the power source by the intermittent action of the electronic clutch, sucks the refrigerant gas from the evaporator inside, compresses it by the linear reciprocating motion of the piston, and then discharges it to the condenser. .

자동차용 공조장치의 압축기로 많이 사용되고 있는 일반적인 사판식 압축기는, 엔진의 동력을 전달받는 구동샤프트에 일정한 경사각을 가진 디스크 형상의 사판이 설치되어 구동샤프트에 의해 회전하고, 상기 사판의 회전에 의하여 사판의 둘레를 따라 슈(shoe)를 통해 연결된 복수의 피스톤들이 실린더블럭에 형성된 다수의 실린더보어 내부에서 직선 왕복 운동함으로써 냉매가스를 흡입하고 압축하여 배출하도록 구성된다.In a general swash plate compressor widely used as a compressor for an air conditioner for a vehicle, a disk-shaped swash plate having a certain inclination angle is installed on a drive shaft receiving power from an engine and rotated by the drive shaft, and the swash plate is rotated by the swash plate A plurality of pistons connected through a shoe along the circumference of the cylinder block are configured to suck, compress, and discharge refrigerant gas by linear reciprocating motion inside a plurality of cylinder bores formed in the cylinder block.

특히, 최근에는 열부하의 변동에 따라 사판의 경사각이 변화되어 피스톤의 이송량을 제어함으로써 정밀한 온도제어를 달성함과 동시에, 경사각이 연속적으로 변화함으로써 압축기에 의한 엔진의 급격한 토크 변동을 적게 하여 차량의 승차감을 향상시킬 수 있는 용량 가변형 사판식 압축기가 제안되고 있다.In particular, in recent years, the inclination angle of the swash plate is changed according to the fluctuation of the thermal load, and precise temperature control is achieved by controlling the transfer amount of the piston, and at the same time, the inclination angle is continuously changed to reduce abrupt torque fluctuation of the engine by the compressor. A variable capacity swash plate compressor that can improve the

선행기술로서 대한민국 공개특허 2011-21011호 '용량가변형 압축기'가 개시되었다.As a prior art, Korean Patent Publication No. 2011-21011 'Variable capacity compressor' was disclosed.

선행기술의 청구범위를 참조하면, 압축기의 흡입실과 크랭크실을 연결시키는 CS홀과 상기 흡입실과 크랭크실을 추가로 연결시키는 바이패스 CS홀이 형성되어, 바이패스 CS홀은 사판의 경사각 변화에 따라 개폐가능함을 알 수 있다.Referring to the claims of the prior art, a CS hole for connecting the suction chamber and the crankcase of the compressor and a bypass CS hole for further connecting the suction chamber and the crankcase are formed, and the bypass CS hole is formed according to the change in the inclination angle of the swash plate. It can be seen that it can be opened and closed.

상기와 같이 CS홀과 바이패스 CS홀의 개폐에 의해 압축기의 동작 시 소요동력을 저감시킬 수 있고, 압축기의 초기 구동시에 사판의 최대경사각으로 이동이 용이하게 할 수 있다.As described above, by opening and closing the CS hole and the bypass CS hole, the power required for the operation of the compressor can be reduced, and the movement at the maximum inclination angle of the swash plate can be facilitated when the compressor is initially driven.

그러나 종래에는 압축기가 고속 운전시 크랭크실에 과도한 오일이 있는 경우, 크랭크실의 오일과 고속회전하는 구동축의 마찰에 의해 압축기 표면온도가 상승하는 문제점이 있었다.However, in the related art, when there is excessive oil in the crankcase during high-speed operation of the compressor, there is a problem in that the surface temperature of the compressor increases due to friction between the oil in the crankcase and the high-speed rotating drive shaft.

본 발명은 사판의 가변조건 시, 크랭크실 압력과 흡입실 압력의 차압으로, 크랭크실의 오일을 흡입실로 배출함과 동시에 CS홀의 크기가 작아져 소요 동력을 저감할 수 있고, 고속 운전에 따른 압축기 온도 상승을 방지하는 용량 가변형 사판식 압축기를 제공하는 것을 그 목적으로 한다.The present invention can reduce the power required by discharging oil from the crankcase to the suction chamber and reducing the size of the CS hole at the same time as the differential pressure between the crankcase pressure and the suction chamber pressure under the variable condition of the swash plate. An object of the present invention is to provide a variable capacity swash plate compressor that prevents temperature rise.

본 발명에 따른 용량 가변형 사판식 압축기는 서로 평행한 복수의 실린더보어를 형성한 실린더블록와, 상기 실린더블럭에 전방면에 결합하고, 내부에는 크랭크실을 형성한 전방하우징과, 상기 전방하우징의 내부에 회전이 가능하게 구비되고, 상기 크랭크실과 연통하는 구동축연통로를 중심을 따라 형성한 구동축과, 상기 구동축 둘레에 설치되어 피스톤과 연결되는 사판과, 상기 실린더블럭에 후방면에 결합하고, 흡입실, 토출실을 형성한 후방하우징과, 상기 실린더블록과 상기 후방하우징의 연결부위에 배치하고, 제1 CS홀 및 제2 CS홀을 형성한 밸브플레이트와, 상기 실린더블럭에 형성되어, 상기 제2 CS홀을 통해 상기 크랭크실과 상기 흡입실을 연통시키는 CS통로와, 상기 CS통로와 탄력실을 연결하는 제1, 제2오일통로 및 상기 CS통로에 구비되고, 크랭크실과 흡입실의 압력차로 제1오일통로 및 제2오일통로의 연통을 조절하는 CS밸브체를 포함한다.The variable capacity swash plate compressor according to the present invention includes a cylinder block having a plurality of cylinder bores parallel to each other, a front housing coupled to the front surface of the cylinder block, and a crankcase formed therein, and the inside of the front housing. A drive shaft provided rotatably and formed along a drive shaft communication path communicating with the crank chamber, a swash plate installed around the drive shaft and connected to the piston, coupled to the rear surface of the cylinder block, and a suction chamber; A rear housing having a discharge chamber, a valve plate disposed at a connection portion between the cylinder block and the rear housing and having a first CS hole and a second CS hole, is formed in the cylinder block, and the second CS The CS passage for communicating the crank chamber and the suction chamber through a hole, the first and second oil passages connecting the CS passage and the resilient seal, and the CS passage are provided in the CS passage, and the first oil is provided by a pressure difference between the crank chamber and the suction chamber. and a CS valve body for controlling communication of the passage and the second oil passage.

이때 본 발명에 따른 상기 CS밸브체는 원통형으로서 중심축상에 관통홀을 형성하고 일단이 상기 밸브플레이트에 밀착하여 배치하는 고정부재와, 원통형으로 상기 고정부재와 대향진 위치에 배치된 유동부재와, 상기 고정부재와 상기 유동부재 사이에 배치되고 상기 고정부재와 상기 유동부재에 대하여 탄성력을 인가하여 상기 고정부재와 상기 유동부재 간의 이격 간격을 조절하는 탄성부재를 포함한다.At this time, the CS valve body according to the present invention has a cylindrical shape and a fixing member having a through hole formed on the central axis and disposed in close contact with the valve plate at one end, and a flow member disposed in a cylindrical shape opposite to the fixing member, and an elastic member disposed between the fixing member and the moving member and adjusting the spacing between the fixing member and the moving member by applying an elastic force to the fixing member and the moving member.

그리고 본 발명에 따른 상기 고정부재의 관통홀 직경은 상기 제1 CS홀의 직경과 동일한 직경으로 형성하는 것이 바람직하다.And it is preferable that the through-hole diameter of the fixing member according to the present invention be formed to have the same diameter as the diameter of the first CS hole.

여기서 본 발명에 따른 상기 밸브플레이트의 제2 CS홀는 상기 제1 CS홀의 직경보다 상대적으로 크게 형성하는 것이 바람직하다.Here, the second CS hole of the valve plate according to the present invention is preferably formed to be relatively larger than the diameter of the first CS hole.

본 발명에 따른 용량 가변형 사판식 압축기에 나타나는 효과는 다음과 같다.Effects of the variable capacity swash plate compressor according to the present invention are as follows.

사판의 가변조건 시, 크랭크실 압력과 흡입실 압력의 차압으로, 크랭크실의 오일을 흡입실로 배출함과 동시에 CS홀의 크기가 작아져 소요 동력을 저감할 수 있고, 고속 운전에 따른 압축기 온도 상승을 방지하는 효과를 가진다.Under the variable condition of the swash plate, the differential pressure between the crankcase pressure and the suction chamber pressure discharges the crankcase oil to the suction chamber, and at the same time the size of the CS hole becomes smaller, thereby reducing the power required and reducing the compressor temperature rise due to high-speed operation. has a preventive effect.

도 1은 본 발명의 일 실시 예에 따른 용량 가변형 사판식 압축기의 단면을 보인 예시도이다.
도 2는 본 발명의 일 실시 예에 따른 CS밸브체에 의해 제1오일통로를 개방한 상태를 보인 예시도이다.
도 3은 본 발명의 일 실시 예에 따른 CS밸브체에 의해 제2오일통로를 개방한 상태를 보인 예시도이다.
1 is an exemplary view showing a cross-section of a capacity variable swash plate compressor according to an embodiment of the present invention.
2 is an exemplary view showing a state in which the first oil passage is opened by the CS valve body according to an embodiment of the present invention.
3 is an exemplary view showing a state in which the second oil passage is opened by the CS valve body according to an embodiment of the present invention.

이하, 첨부된 도면을 참조하여 본 발명에 따른 바람직한 실시 예를 상세히 설명하기로 한다. 이에 앞서, 본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 아니 되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여, 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다.Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to their ordinary or dictionary meanings, and the inventor should properly understand the concept of the term in order to best describe his invention. Based on the principle that can be defined, it should be interpreted as meaning and concept consistent with the technical idea of the present invention.

따라서 본 명세서에 기재된 실시 예와 도면에 도시된 구성은 본 발명의 가장 바람직한 실시 예에 불과할 뿐이고, 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들은 대체할 수 있는 균등한 변형 예들이 있을 수 있음을 이해하여야 한다.Therefore, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all the technical ideas of the present invention, so at the time of the present application, they are equivalent It should be understood that there may be variations.

본 발명은 사판의 가변조건 시, 크랭크실 압력과 흡입실 압력의 차압으로, 크랭크실의 오일을 흡입실로 배출함과 동시에 CS홀의 크기가 작아져 소요 동력을 저감할 수 있고, 고속 운전에 따른 압축기 온도 상승을 방지하는 용량 가변형 사판식 압축기에 관한 것으로, 도면을 참조하여 더욱 살펴보면 다음과 같다.The present invention can reduce the power required by discharging oil from the crankcase to the suction chamber and reducing the size of the CS hole at the same time as the differential pressure between the crankcase pressure and the suction chamber pressure under the variable condition of the swash plate. It relates to a variable-capacity swash plate compressor for preventing temperature rise, and will be further examined with reference to the drawings.

도 1 내지 도 3을 참조한 본 발명의 일 실시 예에 따른 용량가변형 압축기는 내주면에 길이방향을 따라 평행하게 형성된 다수의 실린더보어(도시하지 않음)를 가지는 실린더블럭(110)을 포함하고, 상기 실린더블럭(110)의 전방에 밀폐 결합하는 전방하우징(120)을 포함하며, 상기 실린더블럭(110)의 후방에 밸브플레이트(130)를 구비하면서 밀폐 결합하는 후방하우징(140)을 포함한다.The variable capacity compressor according to an embodiment of the present invention with reference to FIGS. 1 to 3 includes a cylinder block 110 having a plurality of cylinder bores (not shown) formed in parallel along the longitudinal direction on an inner circumferential surface, and the cylinder It includes a front housing 120 that is hermetically coupled to the front of the block 110 , and includes a rear housing 140 that is hermetically coupled while having a valve plate 130 at the rear of the cylinder block 110 .

이때 상기 전방하우징(120)의 안쪽에는 크랭크실(Pc)을 마련하며, 상기 전방하우징(120)의 중심 부근에는 구동축(200)의 일단이 회전가능하게 지지되는 한편, 상기 구동축(200)의 타단은 상기 크랭크실(Pc)을 통과하여 실린더블럭(110)에 설치된 베어링을 매개로 지지된다.At this time, a crank chamber Pc is provided inside the front housing 120 , and one end of the drive shaft 200 is rotatably supported near the center of the front housing 120 , while the other end of the drive shaft 200 . is supported through the bearing installed in the cylinder block 110 through the crank chamber (Pc).

여기서 상기 구동축(200)의 타측은 지지하는 베어링은 실린더블럭(110)의 중심에 형성된 탄력실(111)에 구비되고, 상기 탄력실(111)에는 축방향으로 베어링을 지지하는 스프링을 내장한다.Here, the bearing supporting the other side of the drive shaft 200 is provided in the elastic chamber 111 formed in the center of the cylinder block 110 , and a spring for supporting the bearing in the axial direction is embedded in the elastic chamber 111 .

그리고 상기 구동축(200)의 중심에는 크랭크실(Pc)과 연통하고, 상기 구동축(200)의 길이를 따라 형성되면서 상기 탄력실(111)과 연통하는 구동축연통로(201)를 형성하여, 선택적으로 상기 크랭크실(Pc)의 냉매와 오일이 상기 구동축(200)을 따라 상기 탄력실(111)로 유동하도록 한다.And in the center of the drive shaft 200, communicating with the crank chamber (Pc), and formed along the length of the drive shaft 200 to form a drive shaft communication path 201 that communicates with the elastic chamber 111, selectively The refrigerant and oil of the crank chamber (Pc) flow along the drive shaft (200) to the elastic chamber (111).

또한, 상기 크랭크실(Pc) 내에는 구동축(200) 둘레에 러그플레이트(210)와 사판(220)을 설치하는데, 상기 러그플레이트(210)에는 그 중앙부에 가이드홀이 각각 직선 천공된 한 쌍의 동력전달용 지지암이 일면에 일체로 돌출되게 형성되어 있고, 상기 사판(220)의 일면에는 핀이 형성되어 있어, 상기 러그플레이트(210)가 회전함에 따라 상기 사판(220)의 핀이 러그플레이트(210)의 가이드홀 내에서 슬라이딩 이동하면서 사판(220)의 경사각을 가변하게 된다.In addition, a lug plate 210 and a swash plate 220 are installed around the drive shaft 200 in the crank chamber Pc, and the lug plate 210 has a pair of straight-line perforated guide holes in the center thereof. A support arm for power transmission is formed to protrude integrally on one surface, and a pin is formed on one surface of the swash plate 220. As the lug plate 210 rotates, the pins of the swash plate 220 are lug plate. The inclination angle of the swash plate 220 is varied while sliding within the guide hole of the 210 .

또한, 상기 사판(220)의 외주면은 슈(도시하지 않음)를 개재하여 각 피스톤(도시하지 않음)에 미끄럼이동이 가능하게 끼워진다.In addition, the outer peripheral surface of the swash plate 220 is slidably fitted to each piston (not shown) through a shoe (not shown).

따라서, 상기 사판(220)이 경사된 상태에서 회전함에 따라, 그 외주면에 슈를 구비하여 끼워진 피스톤(도시하지 않음)들은 상기 실린더블럭(110)의 각 실린더보어(도시하지 않음) 내에서 왕복 운동하게 된다.Accordingly, as the swash plate 220 rotates in an inclined state, the pistons (not shown) fitted with shoes on the outer circumferential surface reciprocate within each cylinder bore (not shown) of the cylinder block 110 . will do

그리고 상기 후방하우징(140)에는 흡입실(Ps)과 토출실(Pd)을 각각 형성하는데, 상기 후방하우징(140)과 실린더블럭(110) 사이에 구비되는 밸브플레이트(130)에는 각 실린더보어에 대응하는 곳에 흡입구와 토출구가 각각 형성되어, 상기 흡입구 및 토출구는 상기 흡입실(Ps) 및 토출실(Pd)과 각각 연결된다.And a suction chamber (Ps) and a discharge chamber (Pd) are respectively formed in the rear housing 140, and the valve plate 130 provided between the rear housing 140 and the cylinder block 110 is provided in each cylinder bore. A suction port and a discharge port are respectively formed in corresponding places, and the suction port and the discharge port are respectively connected to the suction chamber Ps and the discharge chamber Pd.

따라서 상기 피스톤의 왕복 운동에 의해 흡입실(Ps)의 냉매가 실린더보어 내에 흡입되어 압축된 후 토출실(Pd)로 배출되는데, 상기 크랭크실(Pc) 내의 압력과 실린더보더 내의 압력 차이에 따라 사판(220)의 경사각을 변화하여 냉매의 토출량을 조절한다.Therefore, the refrigerant in the suction chamber (Ps) is sucked into the cylinder bore by the reciprocating motion of the piston, is compressed, and then discharged to the discharge chamber (Pd). According to the difference between the pressure in the crank chamber (Pc) and the pressure in the cylinder border, the swash plate The discharge amount of the refrigerant is adjusted by changing the inclination angle of 220 .

구체적으로, 상기 토출실(Pd)과 크랭크실(Pc)을 연결하는 통로에 전자제어밸브(도시하지 않음)를 설치하여 상기 전자제어밸브(도시하지 않음)를 개폐함으로써 크랭크실(Pc)의 압력을 조정하고, 이를 통해 사판(220)의 경사각을 조정하여 토출 용량을 조절하는 방식이다.Specifically, by installing an electromagnetic control valve (not shown) in the passage connecting the discharge chamber Pd and the crank chamber Pc to open and close the electromagnetic control valve (not shown), the pressure of the crank chamber Pc is a method of adjusting the discharge capacity by adjusting the inclination angle of the swash plate 220 through this.

상기한 밸브플레이트(130)는 소정의 두께를 갖는 판 형태로서, 상기 밸브플레이트(130)에는 소정 직경의 제1 CS홀(131) 및 제2 CS홀(132)을 형성하는데, 상기 제1 CS홀(131)은 상기 구동축(200)의 타측 중심과 대응하는 위치인 상기 밸브플레이트(130)의 중심에 형성하고, 상기 제2 CS홀(132)은 상기 제1 CS홀(131)과 일정 거리를 두고 형성하여, 선택적으로 냉매 및 오일을 유동시킨다.The valve plate 130 has a plate shape having a predetermined thickness, and a first CS hole 131 and a second CS hole 132 having a predetermined diameter are formed in the valve plate 130, and the first CS The hole 131 is formed in the center of the valve plate 130 at a position corresponding to the center of the other side of the driving shaft 200 , and the second CS hole 132 is a predetermined distance from the first CS hole 131 . is formed to selectively flow refrigerant and oil.

이때 상기 제2 CS홀(132)은 상기 제1 CS홀(131)보다 상대적으로 큰 직경으로 형성하는 것이 바람직하고, 상기 제1 CS홀(131)은 상기 탄력실(111)과 서로 연통하여, 상기 제1 CS홀(131)을 상기 탄력실(111)의 오일 또는 냉매가 흡입실(Ps)로 유동할 수 있다.In this case, the second CS hole 132 is preferably formed to have a relatively larger diameter than the first CS hole 131, and the first CS hole 131 is in communication with the elastic thread 111, Oil or refrigerant of the elastic chamber 111 through the first CS hole 131 may flow into the suction chamber Ps.

또한, 상기 실린더블록(110)에는 상기 전방하우징(120)의 크랭크실(Pc)과 후방하우징(140)의 흡입실(Ps)을 연결하여, 상기 크랭크실(Pc)에서 흡입실(Ps)로 오일이 유동할 수 있도록 CS통로(112)를 형성하는데, 상기 CS통로(112)는 크랭크실(Pc)과 흡입실(Ps) 사이를 최단 거리 즉, 직선으로 연결하여 냉매 및 오일의 유동을 용이하게 하는 것이 바람직하다.In addition, the cylinder block 110 connects the crank chamber Pc of the front housing 120 and the suction chamber Ps of the rear housing 140 to the suction chamber Ps from the crank chamber Pc. The CS passage 112 is formed so that the oil can flow, and the CS passage 112 connects the crank chamber Pc and the suction chamber Ps with the shortest distance, that is, a straight line to facilitate the flow of refrigerant and oil. It is preferable to do

이때 상기 CS통로(112)는 상기 제2 CS홀(132)과 연결하는 것이 바람직하고, 상기 구동축(200)과 평행하게 형성하며, 상기 CS통로(112) 중 중간측에는 제1오일통로(113) 및 제2오일통로(114)를 형성하고, 상기 제1오일통로(113) 및 제2오일통로(114)는 상기 CS통로(112)와 탄력실(111)을 연통하면서, 선택적으로 상기 CS통로(112)에서 탄력실(111)로 오일을 유동시키거나, 상기 탄력실(111)에서 상기 CS통로(112)로 오일을 유동시킨다.At this time, the CS passage 112 is preferably connected to the second CS hole 132, is formed parallel to the drive shaft 200, and is located in the middle of the CS passage 112, the first oil passage 113. and a second oil passage 114, wherein the first oil passage 113 and the second oil passage 114 communicate with the CS passage 112 and the elastic seal 111, and selectively the CS passage At 112 , the oil flows into the elastic thread 111 , or the oil flows from the elastic thread 111 into the CS passage 112 .

여기서 상기 CS통로(112)에는 CS밸브체(150)를 구비하는데, 상기한 CS밸브체(150)를 보다 상세하게 살펴보면, 상기 CS밸브체(150)는 CS통로(112) 상에서 제2 CS홀(132) 측으로 밀착되어 배치되어, 압축기의 동작 상태에 따라 상기 CS밸브체(150)는 상기 CS통로(112)에서 선택적으로 상기 제1오일통로(113)만을 개방하거나 또는 제2오일통로(114)을 개방한다.Here, the CS passage 112 has a CS valve body 150 . Looking at the CS valve body 150 in more detail, the CS valve body 150 is a second CS hole on the CS passage 112 . (132), the CS valve body 150 selectively opens only the first oil passage 113 or the second oil passage 114 in the CS passage 112 depending on the operating state of the compressor. ) is opened.

이때 상기 CS밸브체(150)는 고정부재(151), 유동부재(152) 및 탄성부재(153)를 포함한다.At this time, the CS valve body 150 includes a fixing member 151 , a flow member 152 and an elastic member 153 .

상기 고정부재(151)는 원통형상으로 밸브플레이트(130)의 제2 CS홀(132) 측에 밀착 배치되고, 상기 고정부재(151)의 직경은 그 외주면이 상기 CS통로(112)의 내주면상에 밀착될 수 있는 정도인 것이 바람직하다.The fixing member 151 is disposed in close contact with the second CS hole 132 side of the valve plate 130 in a cylindrical shape, and the diameter of the fixing member 151 has an outer circumferential surface of the CS passageway 112 on the inner circumferential surface. It is preferable that the degree of adhesion to the

상기 고정부재(151)의 중심축 상에는 소정의 직경을 갖는 관통홀을 형성하여, 상기 관통홀을 통해 제2 CS홀(132) 측으로 오일의 유동이 이루어진다.A through hole having a predetermined diameter is formed on the central axis of the fixing member 151 , and the oil flows toward the second CS hole 132 through the through hole.

또한, 상기 유동부재(152)는 상기 CS통로(112) 중 상기 제1오일통로(113) 및 제2오일통로(114) 인접하게 배치되는데, 상기 유동부재(152)는 크랭크실(Pc)의 압력과 흡입실(Ps)의 압력 차이로 유동하여, 상기 제1오일통로(113)만을 개방하거나 또는 제2오일통로(114)을 개방한다.In addition, the flow member 152 is disposed adjacent to the first oil passage 113 and the second oil passage 114 of the CS passage 112 , and the flow member 152 is the crank chamber Pc. It flows due to the pressure difference between the pressure and the suction chamber Ps, so that only the first oil passage 113 is opened or the second oil passage 114 is opened.

이때 상기 제1오일통로(113) 및 제2오일통로(114)는 서로 평행하게 형성하고, 상기 제1오일통로(113)는 크랭크실(Pc) 측에 배치하며, 상기 제2오일통로(114)는 흡입실(Ps) 측에 배치하고, 상기 유동부재(152)의 직경은 그 외주면이 상기 CS통로(112)의 내주면상에 밀착될 수 있는 정도인 것이 바람직하다.At this time, the first oil passage 113 and the second oil passage 114 are formed parallel to each other, the first oil passage 113 is disposed on the crank chamber Pc side, and the second oil passage 114 ) is disposed on the suction chamber (Ps) side, and the diameter of the flow member 152 is preferably such that its outer circumferential surface can be in close contact with the inner circumferential surface of the CS passageway 112 .

그리고 상기 탄성부재(153)는 코일스프링 형태로 상기 고정부재(151)와 상기 유동부재(152) 사이에 배치하는데, 상기 탄성부재(153)는 상기 고정부재(151)과 상기 유동부재(152)에 대하여 탄성력을 인가하여, 상기 고정부재(151)과 상기 유동부재(152)이 서로 소정 거리만큼 이격될 수 있도록 하고, 상기 유동부재(152)가 원위치에 복귀할 수 있도록 탄성을 제공한다.And the elastic member 153 is disposed between the fixing member 151 and the movable member 152 in the form of a coil spring, and the elastic member 153 is the fixing member 151 and the movable member 152 . By applying an elastic force to the , the fixing member 151 and the flow member 152 can be spaced apart from each other by a predetermined distance, and elasticity is provided so that the flow member 152 can return to its original position.

따라서 상기 탄성부재(153)에 탄성 지지된 상기 유동부재(152)는 제2오일통로(114)만이 개방되도록 상기 제1오일통로(113)의 입구에 위치하고, 상기 크랭크실의 압력이 흡입실의 압력보다 크면, 상기 유동부재(152)가 상기 제2오일통로(114)측으로 이동하여 상기 제2오일통로(114)을 폐쇄하고, 상기 제1오일통로(113)는 개방되도록 한다.Therefore, the flow member 152 elastically supported by the elastic member 153 is located at the inlet of the first oil passage 113 so that only the second oil passage 114 is opened, and the pressure of the crank chamber is When the pressure is greater than the pressure, the flow member 152 moves toward the second oil passage 114 to close the second oil passage 114 and open the first oil passage 113 .

상기한 과정에 의해 크랭크실(Pc)에 모인 오일은 냉매와 함께 흡입실(Ps)로 배출됨에 따라 회전하는 구동력(200)과 오일 간의 마찰을 줄일 수 있어, 고속회전에 의해 압축기의 표면온도가 상승하는 것을 억제할 수 있다.As the oil collected in the crankcase Pc by the above process is discharged to the suction chamber Ps together with the refrigerant, it is possible to reduce friction between the rotating driving force 200 and the oil, so that the surface temperature of the compressor is increased by high-speed rotation. rise can be suppressed.

본 발명은 도면에 도시된 실시 예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 본 기술 분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 다른 실시 예가 가능하다는 점을 이해할 것이다. 따라서 본 발명의 진정한 기술적 보호 범위는 첨부된 특허청구범위의 기술적 사상에 의하여 정해져야 할 것이다.Although the present invention has been described with reference to the embodiment shown in the drawings, which is only exemplary, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

110: 실린더블럭 111: 탄력실
112: CS통로 113: 제1오일통로
114: 제2오일통로 120: 전방하우징
130: 밸브플레이트 131: 제1 CS홀
132: 제2 CS홀 140: 후방하우징
150: CS밸브체 151: 고정부재
152: 유동부재 153: 탄성부재
200: 구동축 201: 구동축연통로
210: 러그플레이트 220: 사판
Pc: 크랭크실 Ps: 흡입실
Pd: 토출실
110: cylinder block 111: elastic thread
112: CS passage 113: first oil passage
114: second oil passage 120: front housing
130: valve plate 131: first CS hole
132: second CS hole 140: rear housing
150: CS valve body 151: fixing member
152: flow member 153: elastic member
200: drive shaft 201: drive shaft communication passage
210: lug plate 220: swash plate
Pc: crankcase Ps: suction chamber
Pd: discharge chamber

Claims (4)

서로 평행한 복수의 실린더보어를 형성한 실린더블록;
상기 실린더블럭에 전방면에 결합하고, 내부에는 크랭크실을 형성한 전방하우징;
상기 전방하우징의 내부에 회전이 가능하게 구비되고, 상기 크랭크실과 연통하는 구동축연통로를 중심을 따라 형성한 구동축;
상기 구동축 둘레에 설치되어 피스톤과 연결되는 사판;
상기 실린더블럭에 후방면에 결합하고, 흡입실, 토출실을 형성한 후방하우징;
상기 실린더블록과 상기 후방하우징의 연결부위에 배치하고, 제1 CS홀 및 제2 CS홀을 형성한 밸브플레이트;
상기 실린더블럭에 형성되어, 상기 제2 CS홀을 통해 상기 크랭크실과 상기 흡입실을 연통시키는 CS통로;
상기 CS통로와 탄력실을 연결하는 제1, 제2오일통로; 및
상기 CS통로에 구비되고, 크랭크실과 흡입실의 압력차로 제1오일통로 및 제2오일통로의 연통을 조절하는 CS밸브체;를 포함하는 용량 가변형 사판식 압축기.
a cylinder block having a plurality of cylinder bores parallel to each other;
a front housing coupled to the front surface of the cylinder block and having a crank chamber therein;
a drive shaft rotatably provided in the front housing and formed along a center of a drive shaft communication path communicating with the crank chamber;
a swash plate installed around the drive shaft and connected to the piston;
a rear housing coupled to the rear surface of the cylinder block and having a suction chamber and a discharge chamber;
a valve plate disposed at a connection portion between the cylinder block and the rear housing and having a first CS hole and a second CS hole;
a CS passage formed in the cylinder block to communicate the crank chamber and the suction chamber through the second CS hole;
first and second oil passages connecting the CS passage and the elastic thread; and
A variable capacity swash plate compressor comprising a; provided in the CS passage, the CS valve body for controlling the communication between the first oil passage and the second oil passage by the pressure difference between the crank chamber and the suction chamber.
청구항 1에 있어서,
상기 CS밸브체는
원통형으로서 중심축상에 관통홀을 형성하고 일단이 상기 밸브플레이트에 밀착하여 배치하는 고정부재와;
원통형으로 상기 고정부재와 대향진 위치에 배치된 유동부재와;
상기 고정부재와 상기 유동부재 사이에 배치되고 상기 고정부재와 상기 유동부재에 대하여 탄성력을 인가하여 상기 고정부재와 상기 유동부재 간의 이격 간격을 조절하는 탄성부재;를 포함하는 용량 가변형 사판식 압축기.
The method according to claim 1,
The CS valve body is
a fixing member having a cylindrical shape and forming a through hole on the central axis and having one end disposed in close contact with the valve plate;
a fluid member disposed in a cylindrical shape and opposite to the fixing member;
A variable capacity swash plate compressor comprising a; an elastic member disposed between the fixing member and the moving member and adjusting the spacing between the fixing member and the moving member by applying an elastic force to the fixing member and the moving member.
청구항 2에 있어서,
상기 고정부재의 관통홀 직경은
상기 제1 CS홀의 직경과 동일한 직경으로 형성하는 것을 특징으로 하는 용량 가변형 사판식 압축기.
3. The method according to claim 2,
The diameter of the through hole of the fixing member is
A variable capacity swash plate compressor, characterized in that it is formed to have the same diameter as that of the first CS hole.
청구항 3에 있어서,
상기 밸브플레이트의 제2 CS홀는
상기 제1 CS홀의 직경보다 상대적으로 크게 형성한 것을 특징으로 하는 용량 가변형 사판식 압축기.
4. The method according to claim 3,
The second CS hole of the valve plate is
Variable capacity type swash plate compressor, characterized in that it is formed relatively larger than the diameter of the first CS hole.
KR1020190175229A 2019-12-26 2019-12-26 Variable displacement swash plate type compressor KR20210083443A (en)

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