KR20050119478A - A structure for connecting a piston and a shaft of hermetic compressors for refrigerators - Google Patents
A structure for connecting a piston and a shaft of hermetic compressors for refrigerators Download PDFInfo
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- KR20050119478A KR20050119478A KR1020040044584A KR20040044584A KR20050119478A KR 20050119478 A KR20050119478 A KR 20050119478A KR 1020040044584 A KR1020040044584 A KR 1020040044584A KR 20040044584 A KR20040044584 A KR 20040044584A KR 20050119478 A KR20050119478 A KR 20050119478A
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- freedom
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
- F04B39/0022—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons piston rods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/01—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being mechanical
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/10—Connection to driving members
- F16J1/14—Connection to driving members with connecting-rods, i.e. pivotal connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J7/00—Piston-rods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
- F25B31/02—Compressor arrangements of motor-compressor units
- F25B31/023—Compressor arrangements of motor-compressor units with compressor of reciprocating-piston type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2210/00—Working fluid
- F05B2210/10—Kind or type
- F05B2210/12—Kind or type gaseous, i.e. compressible
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2210/00—Working fluid
- F05B2210/10—Kind or type
- F05B2210/14—Refrigerants with particular properties, e.g. HFC-134a
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/40—Transmission of power
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/50—Kinematic linkage, i.e. transmission of position
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- 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)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Compressor (AREA)
Abstract
본 발명은 프레임에서 회전가능한 샤프트(20) 상단에 연결되는 커넥팅 로드(30)를 통하여 피스톤(50)이 직선운동하도록 연결되는 압축기의 피스톤과 샤프트의 연결구조에 관한 것으로, 샤프트(20) 상단의 편심부(21)에 회전가능하게 장착되는 연결부재(40)에 커넥팅 로드(30)의 대향 단부가 상하방향으로 자유로이 회전가능하여 직각방향의 자유도를 제공하도록 핀 연결되며, 상기 연결부재(40)는 샤프트(20)의 편심부(21)에 끼워지는 링 타입 요소의 외주면에 두개의 이격된 리브(41)들이 형성되고 그 리브들 사이에 커넥팅 로드(30)의 단부가 핀(42)에 의해 연결되는 것을 특징으로 하여 구성됨으로써, 피스톤과 커넥팅 로드의 수평방향의 자유도와 함께 샤프트와 피스톤 사이의 수직방향의 자유도 증가로 인하여, 종래와 같이 커넥팅 로드와 샤프트 사이의 정밀한 직각도 유지가 요구되지 않으므로 그에 따른 가공 정밀도 완화에 따른 가공 비용을 절감할 수 있고 조립 작업 또한 간편해지고, 압축기의 생산 비용을 저렴하게 낮출 수 있는 실린더와 프레임 분리형 제조도 가능하게 되는 장점이 있다.The present invention relates to a connection structure of a piston and a shaft of a compressor in which a piston 50 is linearly connected through a connecting rod 30 connected to an upper end of a rotatable shaft 20 in a frame. Opposite ends of the connecting rods 30 are rotatably mounted in the eccentric portion 21 so as to be freely rotatable in an up and down direction, so that the pins are connected to each other to provide a degree of freedom in the direction perpendicular to the connecting member 40. Is formed on the outer circumferential surface of the ring type element fitted to the eccentric portion 21 of the shaft 20, with two spaced apart ribs 41 between which the ends of the connecting rod 30 are connected by pins 42. Since it is configured to be connected, due to the increase in the vertical freedom between the shaft and the piston along with the horizontal freedom of the piston and the connecting rod, the precision between the connecting rod and the shaft as in the prior art Since the maintenance of the squareness is not required, it is possible to reduce the processing cost due to the reduction of the machining precision and to simplify the assembly work, and to manufacture the separate cylinder and the frame, which can lower the production cost of the compressor.
Description
본 발명은 냉장고용 밀폐형 압축기의 피스톤과 샤프트의 연결구조에 관한 것으로, 특히 가공 및 조립 오차를 수용할 수 있도록 개선된 피스톤과 샤프트의 연결구조에 관한 것이다.The present invention relates to a connection structure of a piston and a shaft of a hermetic compressor for a refrigerator, and more particularly to an improved connection structure of a piston and a shaft to accommodate processing and assembly errors.
일반적으로, 냉장고에서 냉매 가스를 압축하기 위한 압축기는 도 1에 개략적으로 도시된 바와같이 밀폐되는 하우징(1)속에 고정자(2)를 포함한 프레임(3)이 스프링으로 진동이 흡수되게 지지되어 있으며, 고정자의 중심부 위치의 프레임에 형성된 홀에 회전자(4)가 구비된 샤프트(5)가 회전가능하게 장착되어 있고, 샤프트의 상단에 편심되어 커넥팅 로드를 통해 실린더(6)의 피스톤(7)과 연결되어 피스톤을 구동하도록 구성되어 있다.In general, the compressor for compressing the refrigerant gas in the refrigerator is a frame (3) including the stator (2) in the sealed housing (1) as schematically shown in Figure 1 is supported so that the vibration is absorbed by the spring, The shaft 5 with the rotor 4 is rotatably mounted in a hole formed in the frame at the center position of the stator, and is eccentrically attached to the upper end of the shaft and is connected to the piston 7 of the cylinder 6 through a connecting rod. And is configured to drive the piston.
상기 냉장고 압축기에서 고정자에 전류가 인가되면 고정자와 회전자 사이의 전자기적 작용에 의해 회전자와 함께 샤프트가 회전하게 되며, 이와같이 샤프트의 회전에 의해 샤프트에 연결된 피스톤(7)이 왕복운동하여 실린더(6)에서 냉매를 압축 및 토출하게 된다. When a current is applied to the stator in the refrigerator compressor, the shaft rotates together with the rotor by the electromagnetic action between the stator and the rotor. As such, the piston 7 connected to the shaft reciprocates to rotate the cylinder ( In 6) the refrigerant is compressed and discharged.
상기 압축기의 샤프트(5)와 피스톤(7)은 커넥팅 로드(8)로 연결되며, 커넥팅 로드의 양단부는 홀이 형성되어 일단부의 홀은 샤프트 상단의 편심부(9)에 조립되고, 타단부의 홀은 실린더(6)의 피스톤(7)에 핀(10)으로 연결되어 조립된다.The shaft 5 and the piston 7 of the compressor are connected by a connecting rod 8, and both ends of the connecting rod are formed with holes so that one end of the hole is assembled to the eccentric portion 9 of the upper end of the shaft. The hole is connected to the piston 7 of the cylinder 6 by a pin 10 and assembled.
그러나, 이러한 커넥팅 로드를 이용한 피스톤과 샤프트의 연결구조는 피스톤과 커넥팅 로드 사이에는 어느 정도의 가공 및 조립 오차를 수용할 수 있는 자유도가 존재하지만, 커넥팅 로드와 샤프트 사이에는 매우 정밀한 직각도가 요구되어 커넥팅 로드의 홀과 샤프트의 편심부의 가공 오차가 커지는 경우에는 조립이 어려우며 조립하더라도 심한 마모가 초래되는 문제가 발생되고 샤프트와 피스톤의 직각 방향의 오차로 인하여 피스톤의 압축 행정이 원활하지 못하게 되어 압축기의 성능 저하가 초래되므로 매우 정밀한 가공 및 조립작업을 필요로 하고 따라서 비용과 시간도 많이 소요된다.However, the connecting structure of the piston and the shaft using the connecting rod has a degree of freedom between the piston and the connecting rod to accommodate a certain amount of machining and assembly errors, but requires a very precise right angle between the connecting rod and the shaft. If the machining error of the connecting rod's hole and the eccentric part of the shaft becomes large, it is difficult to assemble it, which causes severe abrasion even when assembling, and the compression stroke of the piston is not smooth due to the error of the shaft and the piston at right angles. Degradation results in very precise machining and assembly work, which is costly and time consuming.
따라서, 본 발명은 상술한 종래 냉장고용 압축기의 피스톤과 샤프트의 연결구조에 따른 문제점을 해소하여 피스톤과 샤프트의 가공 및 조립 오차를 수용할 수 있도록 직각 방향의 자유도를 제공하도록 밀폐형 압축기의 피스톤과 샤프트의 개선된 연결구조의 제공을 목적으로 한다.Accordingly, the present invention solves the problems caused by the connection structure of the piston and the shaft of the conventional compressor for the refrigerator described above to provide a freedom in the direction perpendicular to the piston and shaft to accommodate the machining and assembly error of the piston and shaft piston and shaft of the hermetic compressor To provide an improved connection structure.
상기한 목적을 달성하기 위한 냉장고 밀폐형 압축기의 피스톤과 샤프트의 연결구조는 프레임에서 회전가능한 샤프트 상단에 연결되는 커넥팅 로드를 통하여 피스톤이 직선운동하도록 연결되며, 상기 샤프트 상단의 편심부에 회전가능하게 장착되는 연결부재에 커넥팅 로드의 대향 단부가 상하방향으로 자유로이 회전가능하여 직각방향의 자유도를 제공하도록 핀 연결되며, 상기 연결부재는 샤프트의 편심부에 끼워지는 링 타입 요소의 외주면에 두개의 이격된 리브들이 형성되고 그 리브들 사이에 커넥팅 로드의 단부가 핀에 의해 연결되는 것을 특징으로 하여 구성된다. The connection structure of the piston and the shaft of the refrigerator hermetic compressor for achieving the above object is connected to the piston in a linear movement through a connecting rod connected to the top of the rotatable shaft in the frame, rotatably mounted to the eccentric portion of the shaft top Opposite ends of the connecting rod are freely rotatable in the vertical direction to provide a right angle of freedom, the connecting member being two spaced ribs on the outer circumferential surface of the ring-type element fitted to the eccentric of the shaft. Are formed and the end of the connecting rod is connected by a pin between the ribs.
이하, 본 발명의 실시예를 도시한 첨부 도면을 참고하여 본 발명을 상세히 설명하기로 한다.Hereinafter, with reference to the accompanying drawings showing an embodiment of the present invention will be described in detail the present invention.
도 3은 본 발명에 따라 샤프트(20)와 커넥팅 로드(30) 사이에 직각 방향의 자유도를 제공하도록 커넥팅 로드(30)가 샤프트(20)에 대하여 간접적으로 핀연결되게 하여 직각 방향의 자유도를 제공하도록 개선된 구조의 커넥팅 로드와 샤프트의 연결구조를 보여주고 있으며, 도 4는 도 3과 같은 방식으로 연결된 커넥팅 로드와 샤프트가 조립된 상태를 보여준다. FIG. 3 provides the right angle of freedom by allowing the connecting rod 30 to be indirectly pinned with respect to the shaft 20 to provide a right angle of freedom between the shaft 20 and the connecting rod 30 in accordance with the present invention. The connection structure of the connecting rod and the shaft of the improved structure is shown, and FIG. 4 shows a state in which the connecting rod and the shaft are assembled in the same manner as in FIG. 3.
본 발명에 따라 샤프트(20)에 대한 커넥팅 로드(30)의 연결 단부에 직각 방향의 자유도를 제공하도록 핀연결되는 연결부재(40)가 제공된다. 상기 연결부재(40)는 샤프트(20)의 편심부(21)에 끼워지는 링 타입 요소의 외주면에 두개의 이격된 리브(41)들을 형성하고, 그 리브들 사이에서 커넥팅 로드의 단부가 수직방향으로 회전가능하게 핀(42)에 의해 연결된다. 커넥팅 로드의 타단부는 통상의 방식으로 피스톤(50)에 핀(51)으로 측방향의 자유도가 존재하도록 연결된다.According to the invention there is provided a connecting member 40 which is pinned to provide a right angle of freedom at the connecting end of the connecting rod 30 with respect to the shaft 20. The connecting member 40 forms two spaced ribs 41 on the outer circumferential surface of the ring-type element fitted to the eccentric portion 21 of the shaft 20, and the ends of the connecting rods in the vertical direction between the ribs. It is connected by a pin 42 rotatably. The other end of the connecting rod is connected in such a way that there is a lateral degree of freedom with the pin 51 on the piston 50.
상기한 연결구조를 채용한 커넥팅로드와 샤프트의 조립상태를 단면도로 보여주는 도 4에서 확인할 수 있듯이, 샤프트(20)가 회전할 때 그 상단의 편심부(21)의 회전 반경에 상응한 행정거리로 커넥팅 로드(30)를 통하여 연결된 피스톤(50)이 직선운동하게 된다.As shown in Figure 4 showing the assembly state of the connecting rod and the shaft employing the above-described connection structure, when the shaft 20 is rotated to a stroke distance corresponding to the rotation radius of the eccentric portion 21 of the upper end The piston 50 connected through the connecting rod 30 is linearly moved.
이때, 커넥팅 로드(30)와 피스톤(50)의 핀 연결로 도 4에서 수평방향으로 자유도가 존재하며, 아울러 샤프트(20)의 편심부(21)에 자유로이 회전가능하게 연결된 연결부재(40)와 커넥팅 로드(30)의 핀연결에 의해 수직방향, 즉 직각방향의 자유도가 제공된다. At this time, the connecting rod 30 and the pin 50 has a degree of freedom in the horizontal direction in Fig. 4, and also the connection member 40 is freely rotatably connected to the eccentric portion 21 of the shaft 20 and The pin connection of the connecting rod 30 provides the degree of freedom in the vertical direction, that is, the perpendicular direction.
본 발명에 따라, 냉장고용 압축기에서 샤프트의 회전운동을 피스톤이 직선운동가능하게 전달하는 커넥팅로드 사이의 연결구조를 샤프트의 편심부에 연결부재를 사용하여 커넥팅 로드의 단부와 직각 방향으로 회동가능한 핀 연결 방식의 연결구조를 채용함으로써, 피스톤과 커넥팅 로드의 수평방향의 자유도와 함께 샤프트와 피스톤 사이의 수직방향의 자유도 증가로 인하여, 종래와 같이 커넥팅 로드와 샤프트 사이의 정밀한 직각도 유지가 요구되지 않으므로 그에 따른 가공 정밀도 완화에 따른 가공 비용을 절감할 수 있고 조립 작업 또한 간편해지고, 압축기의 생산 비용을 저렴하게 낮출 수 있는 실린더와 프레임 분리형 제조도 가능하게 되는 장점이 있다. According to the present invention, in the refrigerator compressor, a connecting structure between the connecting rods for transmitting the rotational movement of the shaft to the linear movement of the shaft by using a connecting member on the eccentric portion of the shaft is pivotable in a direction perpendicular to the end of the connecting rod. By adopting the connection structure of the connection type, due to the increase of the freedom in the vertical direction between the shaft and the piston along with the freedom in the horizontal direction of the piston and the connecting rod, it is not required to maintain the precise right angle between the connecting rod and the shaft as conventionally. Therefore, it is possible to reduce the processing cost due to the reduction of the processing precision, as well as to simplify the assembly work, it is also possible to manufacture a separate cylinder and frame that can lower the production cost of the compressor.
도 1은 종래 냉장고용 밀폐형 압축기의 구조를 보여주는 개략적인 단면도. 1 is a schematic cross-sectional view showing the structure of a hermetic compressor for a conventional refrigerator.
도 2는 도 1의 피스톤과 샤프트의 연결구조를 보여주는 분해 사시도. Figure 2 is an exploded perspective view showing a connection structure of the piston and the shaft of Figure 1;
도 3은 본 발명에 의한 밀폐형 압축기의 피스톤과 샤프트의 연결구조를 보여주는 분해사시도. Figure 3 is an exploded perspective view showing a connection structure of the piston and the shaft of the hermetic compressor according to the present invention.
도 4는 도 3의 피스톤과 샤프트가 조립된 상태를 보여주는 단면도. 4 is a cross-sectional view showing a state in which the piston and the shaft of FIG. 3 are assembled.
* 도면의 주요 부분에 대한 부호의 설명 * Explanation of symbols on the main parts of the drawings
20 : 샤프트 21 : 편심부 20: shaft 21: eccentric portion
30 : 커넥팅 로드 40 : 연결부재 30: connecting rod 40: connecting member
41 : 리브 42 : 핀 41: rib 42: pin
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040044584A KR20050119478A (en) | 2004-06-16 | 2004-06-16 | A structure for connecting a piston and a shaft of hermetic compressors for refrigerators |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040044584A KR20050119478A (en) | 2004-06-16 | 2004-06-16 | A structure for connecting a piston and a shaft of hermetic compressors for refrigerators |
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| Publication Number | Publication Date |
|---|---|
| KR20050119478A true KR20050119478A (en) | 2005-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020040044584A KR20050119478A (en) | 2004-06-16 | 2004-06-16 | A structure for connecting a piston and a shaft of hermetic compressors for refrigerators |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720657A (en) * | 2012-06-21 | 2012-10-10 | 广州万宝集团压缩机有限公司 | Split connecting rod for refrigeration compressor |
| CN111237164A (en) * | 2020-01-16 | 2020-06-05 | 湖北气佬板节能技术有限公司 | Air compressor piston device easy to maintain |
-
2004
- 2004-06-16 KR KR1020040044584A patent/KR20050119478A/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720657A (en) * | 2012-06-21 | 2012-10-10 | 广州万宝集团压缩机有限公司 | Split connecting rod for refrigeration compressor |
| CN111237164A (en) * | 2020-01-16 | 2020-06-05 | 湖北气佬板节能技术有限公司 | Air compressor piston device easy to maintain |
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