• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A scroll type fluid machine comprising a fixed scroll (3), a rotating scroll (2) arranged to be opposed to the fixed scroll, a drive shaft (6) that drives the rotating scroll, an eccentric shaft (18) decentralized with respect to the drive shaft and connected to the rotating scroll, and an eccentric bushing (8) connecting the drive shaft and the eccentric shaft, the eccentric bushing comprising a main hole (20) in which the drive shaft is mounted and an eccentric hole (21) wherein the eccentric shaft is mounted, and the eccentric hole is decentralized with respect to the main hole.
    公开号:BE1022449B9
    申请号:E20140531
    申请日:2014-07-09
    公开日:2017-08-09
    发明作者:Yoshiyuki Kanemoto；Atsushi Kanaizumi
    申请人:Hitachi Industry Equipment Systems Co Ltd；
    IPC主号:
    专利说明:

    Scroll type fluid machine
    BACKGROUND OF THE INVENTION
    Domain of the invention
    The present invention relates to a scroll type fluid machine.
    Description of the related art
    As the related technique in the field of the present invention, JP 2001-123969 A and JP 2012-132346A can be cited.
    JP 2001-123969 A describes a scroll type fluid machine in which an eccentric bushing comprising a holding tube and an eccentric shaft is provided and a distal end of a drive shaft is included in the holding tube.
    JP 2012-132346 A describes a scroll type compressor provided with a turning mechanism comprising an eccentric shaft, a bushing and an Oldham ring, and a drive shaft that imparts a rotating force to the turning mechanism.
    The eccentric bushing of JP 2001-123969 A is integrally formed with the eccentric shaft. Therefore, it was difficult to drill a hole with a high degree of accuracy relative to an eccentric shaft position in which the drive shaft was received, and the dimensional accuracy of the eccentricity degree could not be improved.
    In the eccentric bushing arranged in the turning mechanism of JP 2012-132346 A, although the eccentric shaft is mounted, the drive shaft is not mounted, and the eccentric shaft is made eccentric with respect to the drive shaft by drilling a hole for mounting of the eccentric shaft in the drive shaft. It was difficult to drill a hole in a very accurate position relative to the drive shaft and the dimensional accuracy could not be improved.
    SUMMARY OF THE INVENTION
    In view of the problems described above, the object of the present invention is to provide a scroll type fluid machine with an eccentric bushing that can improve dimensional accuracy in a simple manner.
    In order to solve the problems described above, the present invention "provides a scroll type fluid machine with a fixed scroll, a rotary scroll arranged to be opposed to the fixed scroll and to perform a rotary motion, a drive shaft that rotates the rotary scroll drives, an eccentric shaft decentralized to the drive shaft and connected to the rotating scroll, and an eccentric bush connecting the drive shaft and the eccentric shaft to each other, the eccentric bush comprising a main hole in which the drive shaft is mounted and an eccentric hole in which the eccentric shaft is mounted, the main hole and the eccentric hole being through holes, and one of these holes being formed at a position not projecting outward in the radial direction of the other hole, viewed from the direction in which the drive shaft extends ".
    According to the present invention, a scroll type fluid machine can be provided that includes an eccentric bushing that can improve dimensional accuracy in a simple manner.
    Other objects, embodiments and advantages of the invention will become apparent from the following description of the embodiments of the invention in conjunction with the accompanying drawings.
    BRIEF DESCRIPTION OF THE DRAWINGS FIG 1 is a drawing showing an embodiment of a compressor according to Embodiment 1 of the present invention. FIG 2A and FIG 2B are drawings showing an internal structure of the compressor according to Embodiment 1 of the present invention. FIG 3 is a drawing showing a component configuration of a drive shaft according to Embodiment 1 of the present invention. FIG 4 is an enlarged view of a component configuration according to Embodiment 1 of the present invention. FIG 5A and FIG 5B are enlarged views of an eccentric bushing according to Embodiment 1 of the present invention. FIG 6 is a drawing showing a relationship between diameters of the main hole and the eccentric hole and the degree of eccentricity according to Embodiment 1 of the present invention. FIG 7 is a drawing showing a component configuration of a drive shaft according to Embodiment 2 of the present invention. FIG 8A and FIG 8B are enlarged views of a balance weight according to Embodiment 2 of the present invention.
    DETAILED DESCRIPTION OF THE INVENTION
    [Embodiment 1]
    Embodiment 1 according to the present invention will be described below with reference to FIG. 1-6. FIG 1, FIG 2A and FIG 2B are structural overview drawings of a scroll type compressor according to Embodiment 1 of the present invention.
    In a compressor main body 1, a rotating scroll 2 and a fixed scroll are arranged to be opposed, and a compression chamber is formed by rotation sections 4, 5 of a spiral shape mounted on the surfaces of the rotating scroll 2 and the fixed scroll, respectively 3 placed opposite each other. In addition, an eccentric section (eccentric bushing 8) is arranged on the compressor main body side of a drive shaft 6, and an eccentric shaft 18 arranged to be eccentric with respect to the drive shaft 6 is connected to the drive shaft 6 by means of the eccentric bushing 8 The eccentric shaft 18 is connected to the rotating scroll 2 and rotatively drives the rotating scroll 2. In addition, there is a rotation prevention mechanism 7 arranged in the rotating scroll 2, and the rotating scroll 2 performs a rotating (eccentric) movement through the drive shaft 6 relative to the fixed scroll 3 in order to compress air.
    Here, a motor that drives the compressor main body 1 is composed of a motor housing 9 and a rotor 10 and a stator 11 received therein, and is connected to the drive shaft 6 which is plugged-in to a rotor 10. In addition, on the side of the drive shaft 6 opposite the rotating scroll 2 a fan 12 which generates cooling air. The cooling fan 12 is accommodated in a fan housing 13 which is attached to the motor housing 9, the motor is driven, whereby the cooling fan rotates, and cooling gas is drawn in from a cooling air inlet 14, to generate the cooling air. The cooling air generated by the cooling fan 12 goes along the inside of the fan housing 13, flows to the side of the rotating scroll 2 and a cooling fin 15 on the back of the fixed scroll 3, and cools the compressor main body 1. The cooling air heated by cooling the compressor main body 1 is discharged through a cooling air outlet 16. FIG. 3 is a configuration drawing of the eccentric bush 8 and the drive shaft 6. On the drive shaft 6 a balance weight 17 is arranged which adjusts the weight balance with respect to the eccentric movement, and the eccentric bushing 8 and the eccentric shaft 18 are arranged in this order. In addition, the eccentric bushing 8 and the eccentric shaft 18 are attached to the drive shaft 6 by means of a mounting bolt 19.
    The drive shaft 6 is supported by a main bearing 23, and the main bearing 23 is arranged between the balance weight 17 and the eccentric bush 8. In addition, the eccentric shaft 18 is supported by an eccentric bearing 24, and the eccentric bearing 24 is arranged between the rotating scroll 2 and the eccentric bush 8. With such a positioning relationship, the balance weight 17, the main bearing 23, the eccentric bush 8, the eccentric shaft 18 and the eccentric bearing 24 can be mounted in this order on the drive shaft 6, and mounting can be easily performed from one direction. FIG. 4, FIG. 5A and FIG. 5B are enlarged views of the eccentric bushing 8 of the present embodiment. The eccentric bush 8 is arranged on the compressor main body side of the drive shaft 6, and is connected to rotating scroll 2, so as to rotate the rotating scroll 2. The eccentric bush 8 has a main hole 20 in which the drive shaft 6 is mounted and an eccentric hole 21 in which the eccentric shaft 18 is mounted, and the eccentric hole 21 is decentralized with respect to the main hole 20. Thus, the rotating scroll 2 carries a rotating movement relative to the fixed scroll 3. In the present embodiment, the drive shaft 6 and the eccentric shaft 18 are not subjected to drilling, but the eccentric shaft 18 is decentralized with respect to the drive shaft 6 by means of the eccentric bush 8 Consequently, highly accurate bores are not required for the drive shaft 6 and the eccentric shaft 18 and the dimensional accuracy can be improved in a simple manner. In addition, the weight of the balance weight 17 is arranged on the side opposite the eccentric direction of the eccentric hole 21 relative to the main hole 20. Thus, the weight distribution can be adjusted relative to the eccentric movement.
    As shown in FIG. 5A and FIG. 5B, the eccentric sleeve 8 is penetrated through the main hole 20 and the eccentric hole 21. The main hole 20 and the eccentric hole 21 are furthermore formed at a position where one of them does not protrude from the others outwards in the radial direction. Because the main hole 20 and the eccentric hole 21 have such a positioning relationship, when mounting it, the main hole 20 and the eccentric hole 21 can be made by operating from one direction. When executing the main hole 20 and the eccentric hole 21 from one direction, since it is sufficient to attach the raw material once to a working machine, the displacement of the main hole 20 and the eccentric hole 21 can be caused by positioning and the like at performance can be reduced, and the accuracy of the finish can be improved in a simpler manner.
    The relationship between the diameters of the main hole 20 and the eccentric hole 21 and the degree of eccentricity is hereby shown in FIG 6. When the diameter of one of the respective holes is given by A, the diameter of the other given by B, and the degree of eccentricity of the rotating scroll is given by ε, by realizing the relationship (Α / 2-ε)> B / 2, the main hole 20 and the eccentric hole 21 can be formed at a position where one one of them does not protrude outwards from the others in the radial direction.
    In the scroll type compressor, because the compression chamber is formed by the rotation sections 4, 5 of the rotating scroll 2 and the fixed scroll 3, the performance of the compressor depends on the size of the gap between the revolutions. If the gap between the revolutions is smaller, the degree of sealing of the compression chamber improves, and the performance improves. However, when the rotations touch each other, the rotations break and the compressor malfunctions. Consequently, the accuracy of the eccentric section that determines the gap between the revolutions becomes important for the performance and reliability of the compressor. According to the present embodiment, since the main hole 20 in which the drive shaft 6 is mounted and the eccentric hole 21 in which the eccentric shaft 18 is mounted are arranged in the eccentric bush 8, the dimensional accuracy can be improved in a simple manner. Thus, the performance and reliability of the compressor can be improved.
    [Embodiment 2]
    Embodiment 2 according to the present invention will be described with the help of FIG. 7, FIG. 8A and FIG. 8B. With respect to the same configuration as that of Embodiment 1, the same reference numerals are given and the description thereof is omitted.
    As shown in Figure 7, in the present embodiment, the eccentric sleeve 8 and the balance weight 22, which adjusts the weight balance of the eccentric shaft 18, are integrally formed, as explained in Embodiment 1. The balance weight 22 is necessary for adjusting the weight distribution relative to the eccentric movement of the rotating scroll 2, and is placed on the main axis side. FIG 8A and FIG 8B are enlarged views of the present embodiment. As shown in the drawings, in the present embodiment, the eccentric sleeve 8 and the balance weight 22 are integrally formed. The main hole 20 and the eccentric hole 21 are formed in the balance weight 22 (eccentric bush 8). In addition, the weight of the balance weight is formed on the opposite side of the direction in which the eccentric shaft 18 is decentralized (the direction in which the eccentric hole 21 is decentralized with respect to the main hole 20). Thus, even in the case that the eccentric sleeve 8 and the balance weight 22 are integrally formed, the weight balance can be adjusted relative to the eccentric movement.
    In addition, in the present embodiment, the main bearing 23, which supports the drive shaft 6, is arranged between the eccentric bush 8 (balance weight 22) and the motor housing 9. With such a positioning relationship, the main bearing 23, the eccentric bush 8 (balance weight 22), the eccentric shaft 18 and the eccentric bearing 24 are mounted on the drive shaft 6 in this order, and mounting can be easily performed from one direction.
    According to the present embodiment, since the number of parts mounted on the drive shaft 6 can be reduced, assembly can be simplified, the length of the drive shaft 6 can be reduced, and therefore the product can also be miniaturized.
    It should further be understood by those skilled in the art that, although the foregoing description has been made for embodiments of the invention, the invention is not limited thereto and various changes and modifications can be made without departing from the scope of the invention and subsequent claims.
    权利要求:
    Claims (14)
    [1]
    CONCLUSIONS
    A scroll type fluid machine, comprising: a fixed scroll (3); a rotating scroll (2) adapted to be placed opposite the fixed scroll and to perform a rotating movement; a drive shaft (6) that drives the rotating scroll; an eccentric shaft (18) centered from the drive shaft and connected to the rotating scroll; and an eccentric bush (8) connecting the drive shaft and the eccentric shaft, the eccentric bushing comprising a main hole (20) in which the drive shaft is mounted and an eccentric hole (21) in which the eccentric shaft is mounted, and the Eccentric hole is decentralized with respect to the main hole.
    [2]
    The scroll type fluid machine according to claim 1, wherein the main hole and the eccentric hole penetrate the eccentric sleeve.
    [3]
    The scroll type fluid machine according to claim 1, wherein the main hole and the eccentric hole are formed at a position where one of them does not protrude with respect to the other outwards in a radial direction as seen from a direction in which the drive shaft extends.
    [4]
    The scroll type fluid machine according to claim 1, wherein, when a diameter of one of the main hole and the eccentric hole is given by A, a diameter of the other is given by B, and a degree of eccentricity of the rotating scroll is given by ε, the relation (Α / 2-ε)> Β / 2 is realized.
    [5]
    The scroll type fluid machine according to claim 1, wherein the eccentric sleeve and a balance weight (17) which adjusts the weight balance of the eccentric shaft are integrally formed.
    [6]
    The scroll type fluid machine according to claim 1, wherein a main bearing (23) supporting the drive shaft is arranged between the eccentric bush and a balance weight (17) that adjusts the weight distribution of the eccentric shaft.
    [7]
    The scroll type fluid machine according to claim 1, wherein an eccentric bearing (24) supporting the eccentric shaft is arranged between the eccentric bush and the rotating scroll.
    [8]
    A scroll type fluid machine comprising: a fixed scroll (3); a rotating scroll (2) adapted to be placed opposite the fixed scroll and to perform a rotating movement; a drive shaft (6) that drives the rotating scroll; an eccentric shaft (17) centered from the drive shaft and connected to the rotating scroll; and an eccentric bush (8) in which a main hole (20), in which the drive shaft is mounted, and an eccentric hole (21), in which the eccentric shaft is mounted, are arranged, the eccentric shaft being decentralized with respect to the drive shaft by the eccentric bus.
    [9]
    The scroll type fluid machine according to claim 8, wherein the main hole and the eccentric hole penetrate the eccentric sleeve.
    [10]
    The scroll type fluid machine according to claim 8, wherein the main hole and the eccentric hole are formed at a position where one of them does not protrude with respect to the other in an outward radial direction in a direction in which the drive shaft extends.
    [11]
    The scroll type fluid machine according to claim 8, wherein, when a diameter of one of the main hole and the eccentric hole is given by A, a diameter of the other is given by B, and a degree of eccentricity of the rotating scroll is given by ε, the relation (Α / 2-ε)> Β / 2 is realized.
    [12]
    The scroll type fluid machine according to claim 8, wherein the eccentric bush and a balance weight (22) which adjusts the weight balance of the eccentric shaft are integrally formed.
    [13]
    The scroll type fluid machine according to claim 8, wherein a main bearing (23) supporting the drive shaft is arranged between the eccentric bush and a balance weight (22) that adjusts the weight distribution of the eccentric shaft.
    [14]
    The scroll type fluid machine according to claim 8, wherein an eccentric bearing (24) supporting the eccentric shaft is arranged between the eccentric bush and the rotating scroll.
    类似技术:
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    同族专利:
    公开号 | 公开日
    CN104514714A|2015-04-15|
    US9551341B2|2017-01-24|
    BE1022449B1|2016-04-06|
    JP6165576B2|2017-07-19|
    JP2015068248A|2015-04-13|
    CN104514714B|2018-04-03|
    KR20150037488A|2015-04-08|
    US20150093276A1|2015-04-02|
    KR101623133B1|2016-05-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    TW226345B|1991-06-10|1994-07-11|Carrier Corp|
    JPH04103893A|1990-08-21|1992-04-06|Mitsubishi Heavy Ind Ltd|Scroll type compressor|
    CA2043602C|1990-08-30|1995-08-01|Hiroaki Kondo|Scroll type fluid machinery|
    JP2897449B2|1991-04-19|1999-05-31|株式会社日立製作所|Variable crank mechanism of scroll compressor|
    US5366360A|1993-11-12|1994-11-22|General Motors Corporation|Axial positioning limit pin for scroll compressor|
    JP3314562B2|1994-11-30|2002-08-12|松下電器産業株式会社|Scroll compressor|
    KR100289429B1|1997-12-31|2002-01-12|구자홍|Scroll compressor|
    JP4263323B2|1999-10-26|2009-05-13|アネスト岩田株式会社|Scroll fluid machinery|
    JP2002285979A|2001-03-26|2002-10-03|Tokico Ltd|Scroll-type fluid machine|
    JP3975730B2|2001-11-27|2007-09-12|松下電工株式会社|Scroll compressor|
    JP4594265B2|2006-03-31|2010-12-08|株式会社日立製作所|Scroll type fluid machine|
    JP5150206B2|2007-10-31|2013-02-20|株式会社日立産機システム|Scroll type fluid machine|
    JP2010043608A|2008-08-13|2010-02-25|Hitachi Ltd|Scroll fluid machine|
    JP5697968B2|2010-12-21|2015-04-08|株式会社ヴァレオジャパン|Scroll compressor|
    JP5380482B2|2011-03-08|2014-01-08|日立アプライアンス株式会社|Scroll compressor|
    FR2985557B1|2012-01-11|2014-11-28|Valeo Japan Co Ltd|ECCENTRIC BALANCE COMPRISING ROTATING BLOCK AND COUNTERWEIGHT|
    CN103089619A|2012-11-14|2013-05-08|柳州易舟汽车空调有限公司|Scroll compressor|US11251677B2|2017-01-25|2022-02-15|Hitachi Industrial Equipment Systems Co., Ltd.|Motor and compressor that uses same|
    US11193490B2|2018-03-30|2021-12-07|Kabushiki Kaisha Toyota Jidoshokki|Scroll compressor including bushing mounted on eccentric shaft containing cylindrical and auxiliary weight portions and balancer disposed above annular rotor remote from back pressure chamber|
    KR20200112247A|2019-03-21|2020-10-05|한온시스템 주식회사|Scroll compressor|
    法律状态:
    2017-11-20| FG| Patent granted|Effective date: 20160406 |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2013203005A|JP6165576B2|2013-09-30|2013-09-30|Scroll type fluid machine|
    JP201320300|2013-09-30|
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