公开(公告)号：US06592347B2

公开(公告)日：2003-07-15

申请号：US10043269

申请日：2002-01-14

申请人： Kenzo Matsumoto ,  Takashi Sunaga ,  Dai Matsuura ,  Yasuki Takahashi

发明人： Kenzo Matsumoto ,  Takashi Sunaga ,  Dai Matsuura ,  Yasuki Takahashi

IPC分类号： F04C1800

CPC分类号： F04C18/3564 ,  C10M171/008 ,  F01C21/08 ,  F04C23/001 ,  F04C23/008 ,  F04C29/02 ,  F04C2210/1027 ,  F04C2210/1072

摘要： There is provided a highly reliable rotary compressor which uses polyalkylene glycol as a lubricant or polyalfa olefin as base oil in a compressor utilizing as a refrigerant carbon dioxide which is a natural refrigerant, and prevents abnormal abrasion of a roller and a vane. In a rotary compressor which uses carbonic acid gas as a refrigerant, polyalkylene glycol (determined as a formal nomenclature) as a lubricant, or polyalfa olefin or mineral oil as base oil, there is used a vane whose radius of curvature (Rv) (cm) at a sliding contact portion with respect to said roller can be represented by the following expression (1): T

摘要翻译： 提供了一种高可靠性的旋转式压缩机，其使用作为天然制冷剂的制冷剂二氧化碳的压缩机中使用聚亚烷基二醇作为润滑剂或聚芴烯烃作为基础油，并且防止辊和叶片的异常磨损。 使用碳酸气体作为制冷剂的压缩机，作为润滑剂的聚亚烷基二醇（作为正式命名法确定），或作为基础油的聚芴烯烃或矿物油，使用其曲率半径（Rv）（cm）在 相对于所述辊的滑动接触部分可以由以下表达式（1）表示：[其中T是叶片的厚度（cm），Rr是辊的外周的曲率半径（cm），其滑动 与叶片接触]

公开(公告)号：US07302803B2

公开(公告)日：2007-12-04

申请号：US11377402

申请日：2006-03-17

申请人： Masaya Tadano ,  Haruhisa Yamasaki ,  Kenzo Matsumoto ,  Dai Matsuura ,  Kazuya Sato ,  Takayasu Saito ,  Toshiyuki Ebara ,  Satoshi Imai ,  Atsushi Oda ,  Takashi Sato ,  Hiroyuki Matsumori

发明人： Masaya Tadano ,  Haruhisa Yamasaki ,  Kenzo Matsumoto ,  Dai Matsuura ,  Kazuya Sato ,  Takayasu Saito ,  Toshiyuki Ebara ,  Satoshi Imai ,  Atsushi Oda ,  Takashi Sato ,  Hiroyuki Matsumori

IPC分类号： F25B41/00 ,  F25B1/10 ,  F25D21/06

CPC分类号： F01C21/108 ,  F01C21/0809 ,  F01C21/0845 ,  F04C18/3564 ,  F04C23/001 ,  F04C23/008 ,  F04C29/0042 ,  F04C29/02 ,  F04C29/023 ,  F04C29/028 ,  F04C2210/261 ,  F04C2230/231 ,  F04C2230/60 ,  F04C2240/30 ,  F04C2240/60 ,  F04C2240/601 ,  F04C2240/803 ,  F04C2240/806 ,  F04C2250/101 ,  F04C2250/102 ,  F05C2251/14 ,  F25B9/008 ,  F25B2309/061 ,  F25B2500/16 ,  Y10S417/902 ,  Y10T29/49236

摘要： There is provided a rotary compressor capable of preventing deterioration of performance following plug fixing carried out to prevent falling-off of a spring member. The rotary compressor comprises a cylinder constituting a rotary compression element, a roller engaged with an eccentric portion formed in a rotary shaft of an electric element, and eccentrically rotated in the cylinder, a vane abutted on the roller to divide an inside of the cylinder into a low pressure chamber side and a high pressure chamber side, a spring member for always pressing the vane to the roller side, a housing portion of the spring member, formed in the cylinder, and opened to the vane side and a hermetically sealed container side, a plug positioned in the hermetically sealed container side of the spring member, and inserted into the housing portion to fit into a gap, and an O ring attached around the plug to seal a part between the plug and the housing portion. In this case, a space between the cylinder and the hermetically sealed container is set smaller than a distance from the O ring to an end of the plug on the hermetically sealed container side.

摘要翻译： 本发明提供一种旋转式压缩机，其能够防止在进行插头固定后的性能劣化，以防止弹簧部件脱落。 旋转压缩机包括构成旋转压缩元件的圆筒，与形成在电气元件的旋转轴中的偏心部接合的滚子，并且在圆筒中偏心旋转;叶片抵靠在滚子上，以将圆筒内部分成 低压室侧和高压室侧，用于总是将叶片压向辊侧的弹簧构件，形成在气缸中并且向叶片侧开口的弹簧构件的容纳部和密封容器侧 位于弹簧构件的气密密封容器侧的插头，插入壳体部分以装配到间隙中;以及安装在插头周围的O形环以密封插头和壳体部分之间的部分。 在这种情况下，气缸和密封容器之间的空间被设定为小于从密封容器侧的O形环到塞子的端部的距离。

公开(公告)号：US07837449B2

公开(公告)日：2010-11-23

申请号：US11896347

申请日：2007-08-31

申请人： Masaya Tadano ,  Haruhisa Yamasaki ,  Kenzo Matsumoto ,  Dai Matsuura ,  Kazuya Sato ,  Takayasu Saito ,  Toshiyuki Ebara ,  Satoshi Imai ,  Atsushi Oda ,  Takashi Sato ,  Hiroyuki Matsumori

发明人： Masaya Tadano ,  Haruhisa Yamasaki ,  Kenzo Matsumoto ,  Dai Matsuura ,  Kazuya Sato ,  Takayasu Saito ,  Toshiyuki Ebara ,  Satoshi Imai ,  Atsushi Oda ,  Takashi Sato ,  Hiroyuki Matsumori

IPC分类号： F04B35/04 ,  F01C21/04 ,  F01C1/344

CPC分类号： F01C21/108 ,  F01C21/0809 ,  F01C21/0845 ,  F04C18/3564 ,  F04C23/001 ,  F04C23/008 ,  F04C29/0042 ,  F04C29/02 ,  F04C29/023 ,  F04C29/028 ,  F04C2210/261 ,  F04C2230/231 ,  F04C2230/60 ,  F04C2240/30 ,  F04C2240/60 ,  F04C2240/601 ,  F04C2240/803 ,  F04C2240/806 ,  F04C2250/101 ,  F04C2250/102 ,  F05C2251/14 ,  F25B9/008 ,  F25B2309/061 ,  F25B2500/16 ,  Y10S417/902 ,  Y10T29/49236

摘要： There is provided a rotary compressor capable of preventing deterioration of performance following plug fixing carried out to prevent falling-off of a spring member. The rotary compressor comprises a cylinder constituting a rotary compression element, a roller engaged with an eccentric portion formed in a rotary shaft of an electric element, and eccentrically rotated in the cylinder, a vane abutted on the roller to divide an inside of the cylinder into a low pressure chamber side and a high pressure chamber side, a spring member for always pressing the vane to the roller side, a housing portion of the spring member, formed in the cylinder, and opened to the vane side and a hermetically sealed container side, a plug positioned in the hermetically sealed container side of the spring member, and inserted into the housing portion to fit into a gap, and an O ring attached around the plug to seal a part between the plug and the housing portion. In this case, a space between the cylinder and the hermetically sealed container is set smaller than a distance from the O ring to an end of the plug on the hermetically sealed container side.

摘要翻译： 本发明提供一种旋转式压缩机，其能够防止在进行插头固定后的性能劣化，以防止弹簧部件脱落。 旋转压缩机包括构成旋转压缩元件的圆筒，与形成在电气元件的旋转轴中的偏心部接合的滚子，并且在圆筒中偏心旋转;叶片抵靠在滚子上，以将圆筒内部分成 低压室侧和高压室侧，用于总是将叶片压向辊侧的弹簧构件，形成在气缸中并且向叶片侧开口的弹簧构件的容纳部和密封容器侧 位于弹簧构件的气密密封容器侧的插头，插入壳体部分以装配到间隙中;以及安装在插头周围的O形环以密封插头和壳体部分之间的部分。 在这种情况下，气缸和密封容器之间的空间被设定为小于从密封容器侧的O形环到塞子的端部的距离。

公开(公告)号：US07435062B2

公开(公告)日：2008-10-14

申请号：US10790181

申请日：2004-03-02

申请人： Masaya Tadano ,  Haruhisa Yamasaki ,  Kenzo Matsumoto ,  Dai Matsuura ,  Kazuya Sato ,  Takayasu Saito ,  Toshiyuki Ebara ,  Satoshi Imai ,  Atsushi Oda ,  Takashi Sato ,  Hiroyuki Matsumori

发明人： Masaya Tadano ,  Haruhisa Yamasaki ,  Kenzo Matsumoto ,  Dai Matsuura ,  Kazuya Sato ,  Takayasu Saito ,  Toshiyuki Ebara ,  Satoshi Imai ,  Atsushi Oda ,  Takashi Sato ,  Hiroyuki Matsumori

IPC分类号： F04B17/03 ,  F01M1/00

CPC分类号： F01C21/108 ,  F01C21/0809 ,  F01C21/0845 ,  F04C18/3564 ,  F04C23/001 ,  F04C23/008 ,  F04C29/0042 ,  F04C29/02 ,  F04C29/023 ,  F04C29/028 ,  F04C2210/261 ,  F04C2230/231 ,  F04C2230/60 ,  F04C2240/30 ,  F04C2240/60 ,  F04C2240/601 ,  F04C2240/803 ,  F04C2240/806 ,  F04C2250/101 ,  F04C2250/102 ,  F05C2251/14 ,  F25B9/008 ,  F25B2309/061 ,  F25B2500/16 ,  Y10S417/902 ,  Y10T29/49236

摘要： There is provided a rotary compressor capable of preventing deterioration of performance following plug fixing carried out to prevent falling-off of a spring member. The rotary compressor comprises a cylinder constituting a rotary compression element, a roller engaged with an eccentric portion formed in a rotary shaft of an electric element, and eccentrically rotated in the cylinder, a vane abutted on the roller to divide an inside of the cylinder into a low pressure chamber side and a high pressure chamber side, a spring member for always pressing the vane to the roller side, a housing portion of the spring member, formed in the cylinder, and opened to the vane side and a hermetically sealed container side, a plug positioned in the hermetically sealed container side of the spring member, and inserted into the housing portion to fit into a gap, and an O ring attached around the plug to seal a part between the plug and the housing portion. In this case, a space between the cylinder and the hermetically sealed container is set smaller than a distance from the O ring to an end of the plug on the hermetically sealed container side.

摘要翻译： 本发明提供一种旋转式压缩机，其能够防止在进行插头固定后的性能劣化，以防止弹簧部件脱落。 旋转压缩机包括构成旋转压缩元件的圆筒，与形成在电气元件的旋转轴中的偏心部接合的滚子，并且在圆筒中偏心旋转;叶片抵靠在滚子上，以将圆筒内部分成 低压室侧和高压室侧，用于总是将叶片压向辊侧的弹簧构件，形成在气缸中并且向叶片侧开口的弹簧构件的容纳部和密封容器侧 位于弹簧构件的气密密封容器侧的插头，插入壳体部分以装配到间隙中;以及安装在插头周围的O形环以密封插头和壳体部分之间的部分。 在这种情况下，气缸和密封容器之间的空间被设定为小于从密封容器侧的O形环到塞子的端部的距离。

公开(公告)号：US06892454B2

公开(公告)日：2005-05-17

申请号：US10305775

申请日：2002-11-27

申请人： Kenzo Matsumoto ,  Haruhisa Yamasaki ,  Masaya Tadano ,  Kazuya Sato ,  Dai Matsuura ,  Takayasu Saito ,  Noriyuki Tsuda

发明人： Kenzo Matsumoto ,  Haruhisa Yamasaki ,  Masaya Tadano ,  Kazuya Sato ,  Dai Matsuura ,  Takayasu Saito ,  Noriyuki Tsuda

IPC分类号： F04C29/00 ,  F01C21/08 ,  F04C18/356 ,  F04C23/00 ,  F04C28/24 ,  F04C29/06 ,  F25B1/10 ,  F25B9/00 ,  F25B31/02 ,  F25B47/02 ,  B23P15/00 ,  F01C1/30

CPC分类号： F04C28/24 ,  F01C21/0863 ,  F04C18/3564 ,  F04C23/001 ,  F04C23/008 ,  F04C29/06 ,  F04C2210/1027 ,  F04C2210/1072 ,  F04C2240/10 ,  F25B1/10 ,  F25B9/008 ,  F25B31/026 ,  F25B47/022 ,  F25B2309/061 ,  Y10T29/49236 ,  Y10T29/49245

摘要： A method for manufacturing a multi-stage compression type rotary compressor which avoids the replacement of parts to be used as much as possible to reduce costs and also which enables easily setting an appropriate displacement volume ratio between first and second rotary compression elements without increasing the size of the compressor outer housing. This is done by altering the inner diameter of the cylinder of one of the rotary compression elements without altering the thickness (or height) of this cylinder to set a displacement volume ratio between the first and second rotary compression elements to an optimum value in accordance with the alteration.

摘要翻译： 一种制造多级压缩式旋转压缩机的方法，其避免更换要使用的部件以降低成本，并且还能够容易地设定第一和第二旋转压缩元件之间的适当的排量体积比而不增加尺寸 的压缩机外壳。 这是通过改变一个旋转压缩元件的气缸的内径而不改变该气缸的厚度（或高度）而将第一和第二旋转压缩元件之间的排量体积比设置为根据 改变。

公开(公告)号：US20050008442A1

公开(公告)日：2005-01-13

申请号：US10916200

申请日：2004-08-11

申请人： Kenzo Matsumoto ,  Haruhisa Yamasaki ,  Masaya Tadano ,  Kazuya Sato ,  Dai Matsuura ,  Takayasu Saito ,  Noriyuki Tsuda

发明人： Kenzo Matsumoto ,  Haruhisa Yamasaki ,  Masaya Tadano ,  Kazuya Sato ,  Dai Matsuura ,  Takayasu Saito ,  Noriyuki Tsuda

IPC分类号： F04C29/00 ,  F01C21/08 ,  F04C18/356 ,  F04C23/00 ,  F04C28/24 ,  F04C29/06 ,  F25B1/10 ,  F25B9/00 ,  F25B31/02 ,  F25B47/02 ,  B60P3/06 ,  B61D3/18 ,  F03C2/00 ,  F04B1/00

CPC分类号： F04C28/24 ,  F01C21/0863 ,  F04C18/3564 ,  F04C23/001 ,  F04C23/008 ,  F04C29/06 ,  F04C2210/1027 ,  F04C2210/1072 ,  F04C2240/10 ,  F25B1/10 ,  F25B9/008 ,  F25B31/026 ,  F25B47/022 ,  F25B2309/061 ,  Y10T29/49236 ,  Y10T29/49245

摘要： An object of the present invention is to provide a method for manufacturing a multi-stage compression type rotary compressor which can avoid the replacement of parts to be used as much as possible to reduce costs and also which enables easily setting an appropriate displacement volume ratio while preventing the compressor from being increased in size. The gist of the present invention is that an inner diameter of a lower cylinder is altered without altering its thickness (or height), and a displacement volume ratio between first and second rotary compression elements is set to an optimum value in accordance with the alteration.

公开(公告)号：US07435063B2

公开(公告)日：2008-10-14

申请号：US10790085

申请日：2004-03-02

申请人： Masaya Tadano ,  Haruhisa Yamasaki ,  Kenzo Matsumoto ,  Dai Matsuura ,  Kazuya Sato ,  Takayasu Saito ,  Toshiyuki Ebara ,  Satoshi Imai ,  Atsushi Oda ,  Takashi Sato ,  Hiroyuki Matsumori

发明人： Masaya Tadano ,  Haruhisa Yamasaki ,  Kenzo Matsumoto ,  Dai Matsuura ,  Kazuya Sato ,  Takayasu Saito ,  Toshiyuki Ebara ,  Satoshi Imai ,  Atsushi Oda ,  Takashi Sato ,  Hiroyuki Matsumori

IPC分类号： F04B39/00 ,  F16L33/18

CPC分类号： F01C21/108 ,  F01C21/0809 ,  F01C21/0845 ,  F04C18/3564 ,  F04C23/001 ,  F04C23/008 ,  F04C29/0042 ,  F04C29/02 ,  F04C29/023 ,  F04C29/028 ,  F04C2210/261 ,  F04C2230/231 ,  F04C2230/60 ,  F04C2240/30 ,  F04C2240/60 ,  F04C2240/601 ,  F04C2240/803 ,  F04C2240/806 ,  F04C2250/101 ,  F04C2250/102 ,  F05C2251/14 ,  F25B9/008 ,  F25B2309/061 ,  F25B2500/16 ,  Y10S417/902 ,  Y10T29/49236

摘要： There is provided a rotary compressor capable of preventing deterioration of performance following plug fixing carried out to prevent falling-off of a spring member. The rotary compressor comprises a cylinder constituting a rotary compression element, a roller engaged with an eccentric portion formed in a rotary shaft of an electric element, and eccentrically rotated in the cylinder, a vane abutted on the roller to divide an inside of the cylinder into a low pressure chamber side and a high pressure chamber side, a spring member for always pressing the vane to the roller side, a housing portion of the spring member, formed in the cylinder, and opened to the vane side and a hermetically sealed container side, a plug positioned in the hermetically sealed container side of the spring member, and inserted into the housing portion to fit into a gap, and an O ring attached around the plug to seal a part between the plug and the housing portion. In this case, a space between the cylinder and the hermetically sealed container is set smaller than a distance from the O ring to an end of the plug on the hermetically sealed container side.

公开(公告)号：US20080008608A1

公开(公告)日：2008-01-10

申请号：US11896347

申请日：2007-08-31

申请人： Masaya Tadano ,  Haruhisa Yamasaki ,  Kenzo Matsumoto ,  Dai Matsuura ,  Kazuya Sato ,  Takayasu Saito ,  Toshiyuki Ebara ,  Satoshi Imai ,  Atsushi Oda ,  Takashi Sato ,  Hiroyuki Matsumori

发明人： Masaya Tadano ,  Haruhisa Yamasaki ,  Kenzo Matsumoto ,  Dai Matsuura ,  Kazuya Sato ,  Takayasu Saito ,  Toshiyuki Ebara ,  Satoshi Imai ,  Atsushi Oda ,  Takashi Sato ,  Hiroyuki Matsumori

IPC分类号： F04B17/03

CPC分类号： F01C21/108 ,  F01C21/0809 ,  F01C21/0845 ,  F04C18/3564 ,  F04C23/001 ,  F04C23/008 ,  F04C29/0042 ,  F04C29/02 ,  F04C29/023 ,  F04C29/028 ,  F04C2210/261 ,  F04C2230/231 ,  F04C2230/60 ,  F04C2240/30 ,  F04C2240/60 ,  F04C2240/601 ,  F04C2240/803 ,  F04C2240/806 ,  F04C2250/101 ,  F04C2250/102 ,  F05C2251/14 ,  F25B9/008 ,  F25B2309/061 ,  F25B2500/16 ,  Y10S417/902 ,  Y10T29/49236

摘要： There is provided a rotary compressor capable of preventing deterioration of performance following plug fixing carried out to prevent falling-off of a spring member. The rotary compressor comprises a cylinder constituting a rotary compression element, a roller engaged with an eccentric portion formed in a rotary shaft of an electric element, and eccentrically rotated in the cylinder, a vane abutted on the roller to divide an inside of the cylinder into a low pressure chamber side and a high pressure chamber side, a spring member for always pressing the vane to the roller side, a housing portion of the spring member, formed in the cylinder, and opened to the vane side and a hermetically sealed container side, a plug positioned in the hermetically sealed container side of the spring member, and inserted into the housing portion to fit into a gap, and an O ring attached around the plug to seal a part between the plug and the housing portion. In this case, a space between the cylinder and the hermetically sealed container is set smaller than a distance from the O ring to an end of the plug on the hermetically sealed container side.

摘要翻译： 本发明提供一种旋转式压缩机，其能够防止在进行插头固定后的性能劣化，以防止弹簧部件脱落。 旋转压缩机包括构成旋转压缩元件的圆筒，与形成在电气元件的旋转轴中的偏心部接合的滚子，并且在圆筒中偏心旋转;叶片抵靠在滚子上，以将圆筒内部分成 低压室侧和高压室侧，用于总是将叶片压向辊侧的弹簧构件，形成在气缸中并且向叶片侧开口的弹簧构件的容纳部和密封容器侧 位于弹簧构件的气密密封容器侧的插头，插入壳体部分以装配到间隙中;以及安装在插头周围的O形环以密封插头和壳体部分之间的部分。 在这种情况下，气缸和密封容器之间的空间被设定为小于从密封容器侧的O形环到塞子的端部的距离。

公开(公告)号：US20050013718A1

公开(公告)日：2005-01-20

申请号：US10916271

申请日：2004-08-11

申请人： Kenzo Matsumoto ,  Haruhisa Yamasaki ,  Masaya Tadano ,  Kazuya Sato ,  Dai Matsuura ,  Takayasu Saito ,  Noriyuki Tsuda

发明人： Kenzo Matsumoto ,  Haruhisa Yamasaki ,  Masaya Tadano ,  Kazuya Sato ,  Dai Matsuura ,  Takayasu Saito ,  Noriyuki Tsuda

IPC分类号： F04C29/00 ,  F01C21/08 ,  F04C18/356 ,  F04C23/00 ,  F04C28/24 ,  F04C29/06 ,  F25B1/10 ,  F25B9/00 ,  F25B31/02 ,  F25B47/02 ,  F01C1/30 ,  B23P15/00 ,  F01C1/02 ,  F01C1/063 ,  F01C11/00 ,  F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C11/00 ,  F04C13/00 ,  F04C18/00 ,  F16N13/20

CPC分类号： F04C28/24 ,  F01C21/0863 ,  F04C18/3564 ,  F04C23/001 ,  F04C23/008 ,  F04C29/06 ,  F04C2210/1027 ,  F04C2210/1072 ,  F04C2240/10 ,  F25B1/10 ,  F25B9/008 ,  F25B31/026 ,  F25B47/022 ,  F25B2309/061 ,  Y10T29/49236 ,  Y10T29/49245

摘要： An object of the present invention is to provide a method for manufacturing a multi-stage compression type rotary compressor which can avoid the replacement of parts to be used as much as possible to reduce costs and also which enables easily setting an appropriate displacement volume ratio while preventing the compressor from being increased in size. The gist of the present invention is that an inner diameter of a lower cylinder is altered without altering its thickness (or height), and a displacement volume ratio between first and second rotary compression elements is set to an optimum value in accordance with the alteration.

公开(公告)号：US20050008520A1

公开(公告)日：2005-01-13

申请号：US10916272

申请日：2004-08-11

申请人： Kenzo Matsumoto ,  Haruhisa Yamasaki ,  Masaya Tadano ,  Kazuya Sato ,  Dai Matsuura ,  Takayasu Saito ,  Noriyuki Tsuda

发明人： Kenzo Matsumoto ,  Haruhisa Yamasaki ,  Masaya Tadano ,  Kazuya Sato ,  Dai Matsuura ,  Takayasu Saito ,  Noriyuki Tsuda

IPC分类号： F04C29/00 ,  F01C21/08 ,  F04C18/356 ,  F04C23/00 ,  F04C28/24 ,  F04C29/06 ,  F25B1/10 ,  F25B9/00 ,  F25B31/02 ,  F25B47/02 ,  F01C1/00 ,  F03C2/00 ,  F04C2/00

CPC分类号： F04C28/24 ,  F01C21/0863 ,  F04C18/3564 ,  F04C23/001 ,  F04C23/008 ,  F04C29/06 ,  F04C2210/1027 ,  F04C2210/1072 ,  F04C2240/10 ,  F25B1/10 ,  F25B9/008 ,  F25B31/026 ,  F25B47/022 ,  F25B2309/061 ,  Y10T29/49236 ,  Y10T29/49245

摘要： An object of the present invention is to provide a method for manufacturing a multi-stage compression type rotary compressor which can avoid the replacement of parts to be used as much as possible to reduce costs and also which enables easily setting an appropriate displacement volume ratio while preventing the compressor from being increased in size. The gist of the present invention is that an inner diameter of a lower cylinder is altered without altering its thickness (or height), and a displacement volume ratio between first and second rotary compression elements is set to an optimum value in accordance with the alteration.

摘要翻译： 本发明的目的是提供一种多级压缩式旋转压缩机的制造方法，其能够尽可能地避免更换要使用的部件以降低成本，并且还能够容易地设定适当的排量体积比，同时 防止压缩机尺寸增大。 本发明的要点是在不改变其厚度（或高度）的情况下改变下筒的内径，并且根据改变将第一旋转压缩元件和第二旋转压缩元件之间的容积比设定为最佳值。