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1. 发明申请

US20110243781A1 OILLESS SCREW COMPRESSOR AND COMPRESSED AIR COOLING UNIT 审中-公开
标题翻译：无油螺杆压缩机和压缩空气冷却单元
公开(公告)号：US20110243781A1
公开(公告)日：2011-10-06
申请号：US13164320
申请日：2011-06-20
申请人： Hideki FUJIMOTO , Hitoshi Nishimura , Natsuki Kawabata
发明人： Hideki FUJIMOTO , Hitoshi Nishimura , Natsuki Kawabata
IPC分类号： F01C1/16
CPC分类号： F04C18/16 , F04C23/001 , F04C28/06 , F04C29/04 , F04C29/06 , F04C2220/12 , F04C2240/30 , F04C2270/19 , F04C2270/80
摘要： An oilless screw compressor incorporating water-cooled cooling units for cooling compressed air discharged from compressor bodies having a pair of male and female screw rotors which can be rotated in a contactless and oilless manner, the cooling units comprising a plate type heat-exchanger, and the amount of cooling water for the plate type heat-exchanger being adjustable. With this configuration, a difference between a temperature during load operation and a temperature upon automatic stopping and during unload operation of the compressor can be reduced, so that the cooling unit can be restrained from being damaged or broken within a short period, thereby it is possible to provide a highly reliable oilless screw compressor.
摘要翻译：一种无油螺旋压缩机，其包括用于冷却从压缩机主体排出的压缩空气的水冷式冷却单元，所述压缩机具有可以非接触和无油的方式旋转的一对公螺纹转子和内螺纹转子，所述冷却单元包括板式热交换器，以及板式热交换器的冷却水量可调。通过这样的结构，能够减少负荷运转时的温度与自动停止时的温度，压缩机的卸载运转时的温度的差异，能够在短时间内抑制冷却装置的损坏或破损，可能提供高可靠性的无油螺杆压缩机。

2. 发明申请

US20100135840A1 SCREW COMPRESSOR 有权
标题翻译：螺旋压缩机
公开(公告)号：US20100135840A1
公开(公告)日：2010-06-03
申请号：US12533688
申请日：2009-07-31
申请人： Hideki FUJIMOTO , Hitoshi Nishimura , Yusuke Nagai
发明人： Hideki FUJIMOTO , Hitoshi Nishimura , Yusuke Nagai
IPC分类号： F01C1/16 , F04B17/00
CPC分类号： F04C29/04 , F04B39/0033 , F04C18/16 , F04C23/00 , F04C23/001 , F04C29/045 , F04C29/06
摘要： A screw compressor comprising: a pair of male and female screw rotors; and an air-cooled heat exchanger, wherein the air-cooled heat exchanger is provided above a motor for driving the compressor body; wherein, with respect to a cooling wind for the air-cooled heat exchanger, the air-cooled heat exchanger is inclined to the upstream side; wherein the uppermost portion of a unit suction port for the air-cooled heat exchanger cooling winds is positioned below the uppermost portion of the air-cooled heat exchanger positioned at the uppermost portion; wherein the lowermost portion of the unit suction port for the air-cooled heat exchanger cooling wind is positioned below the lowermost portion of the air-cooled heat exchanger positioned at the lowermost portion; and wherein the cooling wind for the air-cooled heat exchanger is exhausted from a ceiling portion of the compressor unit. With this structure, it becomes possible to provide a compact screw compressor with less noise whose installation area can be reduced.
摘要翻译：一种螺杆式压缩机，包括：一对公螺纹转子和内螺纹转子; 以及空气冷却热交换器，其中所述风冷式热交换器设置在用于驱动所述压缩机主体的马达上方; 其中，对于风冷式热交换器的冷却风，风冷式热交换器向上游侧倾斜，其特征在于，所述风冷式热交换器的冷却风的单元吸入口的最上部位于位于所述最上部的所述风冷式热交换器的最上部，其中用于风冷式热交换器冷却风的单元吸入口的最下部位于位于最下部的空气冷却热交换器的最下部的下方; 并且其中所述风冷式热交换器的冷却风从所述压缩机单元的顶部排出。利用这种结构，可以提供一种噪音较小的紧凑型螺旋压缩机，其安装面积可以减小。

3. 发明申请

US20120164017A1 Oil Free Screw Compressor 有权
标题翻译：无油螺杆压缩机
公开(公告)号：US20120164017A1
公开(公告)日：2012-06-28
申请号：US13192592
申请日：2011-07-28
申请人： Hideki FUJIMOTO , Hitoshi Nishimura
发明人： Hideki FUJIMOTO , Hitoshi Nishimura
IPC分类号： F01C1/16
CPC分类号： F04C18/16 , F04C28/06
摘要： A multi-stage oil-free screw compressor includes: a suction throttle valve for controlling air intake into the compressor; a piston assembly for operating the suction throttle valve; and a structure for supplying a working pressure to the piston assembly. In order to reduce startup load at the time of startup of the compressor, the suction throttle valve is fully closed while a secondary side of a compressor body is opened to the atmosphere. When a negative pressure and the air pressure, that provide the working pressure, are used for slightly opening the suction throttle valve in order to switch the compressor to a loaded mode after a motor for driving the compressor is accelerated to its top speed, the air pressure is provided by a control pipe line that is defined by the same pipe line that forms a drain pipe line. This permits the control pipe line to be opened to the atmosphere as needed during the startup time. Thus is provided the oil-free screw compressor achieving improved startup reliability.
摘要翻译：一种多级无油螺杆压缩机，包括：吸入节流阀，用于控制进入压缩机的进气; 用于操作抽吸节流阀的活塞组件; 以及用于向活塞组件提供工作压力的结构。为了减少启动压缩机时的起动负荷，在将压缩机主体的二次侧向大气开放的同时，吸入节流阀全闭。当用于驱动压缩机的电动机加速到其最高速度时，负压和提供工作压力的空气压力用于稍微打开吸入节流阀，以便将压缩机切换到加载模式，空气通过由形成排水管线的相同管线限定的控制管线来提供压力。这允许控制管线在启动时间根据需要打开到大气中。因此，提供了无油螺杆式压缩机，提高了启动可靠性。

4. 发明申请

US20130089413A1 Screw Compressor 审中-公开
标题翻译：螺杆式压缩机
公开(公告)号：US20130089413A1
公开(公告)日：2013-04-11
申请号：US13591707
申请日：2012-08-22
申请人： Hideki FUJIMOTO , Michinobu Tachibana , Isao Katano
发明人： Hideki FUJIMOTO , Michinobu Tachibana , Isao Katano
IPC分类号： F04D29/58
CPC分类号： F28F1/06 , F04C18/16 , F04C23/001 , F04C29/04 , F28D7/16 , F28F9/22
摘要： A screw compressor includes a compressor body and a shell and tube heat exchanger for cooling of a compressed air discharged from the compressor body. A tube provided in the shell and tube heat exchanger has both ends each having a cylindrical shape, and a center part formed as a multi-lobate tube to have a corrugated shape with crest portions and trough portions alternately arranged in a circumferential direction. The multi-lobate tube provided at the center part of the tube is formed to have a multi-lobate spiral shape through twisting. Size reduction of the shell and tube heat exchanger may make the screw compressor compact as a whole.
摘要翻译：螺杆式压缩机包括压缩机体和用于冷却从压缩机本体排出的压缩空气的壳管式热交换器。设置在壳管式热交换器中的管具有圆筒形状的两端和形成为多叶形管的中心部，具有波纹形状，具有沿圆周方向交替布置的波峰部和谷部。设置在管的中心部分的多叶形管通过扭曲形成为具有多叶形螺旋形状。壳管式热交换器的尺寸减小可使螺杆式压缩机整体变小。

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