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1. 发明申请

US20190128264A1 Oil-Cooled Screw Compressor 审中-公开
公开(公告)号：US20190128264A1
公开(公告)日：2019-05-02
申请号：US16094136
申请日：2017-03-30
申请人： Hitachi Industrial Equipment Systems Co., Ltd.
发明人： Hirotaka KAMEYA , Hideharu TANAKA , Masahiko TAKANO , Takeshi TSUCHIYA
IPC分类号： F04C29/04 , F04C18/16
摘要： The objective of the present invention is to reduce loss factors that occur inside an oil-cooled screw compressor and to improve energy efficiency. In oil-cooled screw compressors, compression is carried out by reducing the volume of an operation chamber in which a gas to be compressed and an oil are mixed and contained, and when a predetermined rise in pressure is complete, a discharge port opens and the gas to be compressed and the oil are discharged. In the operation chamber, the reduction in volume continues and reaches zero, such that the operation chamber disappears, and the opening area of the discharge port also gradually decreases. Immediately before the operation chamber disappears, the ratio of the oil within the operation chamber is high and the opening area of the discharge port is small. Therefore, the discharge resistance increases and the internal pressure dramatically rises, and this has led to increases in the torque rotating the rotor. Thus, in the present invention, a tooth crest arc of a fixed width is provided to the tooth crest of a male tooth profile, and simultaneously a tooth bottom arc is provided to the tooth bottom of a female tooth profile. Due to the actions thereof, the operation chamber immediately before disappearing exists only in a bottom half region from a line that connects the centers of the male and female tooth profiles, and the opening area relative to the volume of the operation chamber can be increased. As a result, the discharge of oil becomes smooth and energy loss is reduced.

2. 发明申请

US20140147325A1 Water Injected Scroll Air Compressor 审中-公开
标题翻译：注水涡旋空气压缩机
公开(公告)号：US20140147325A1
公开(公告)日：2014-05-29
申请号：US14168772
申请日：2014-01-30
申请人： Hitachi Industrial Equipment Systems Co., Ltd.
发明人： Natsuki KAWABATA , Kazuaki SHIINOKI , Hirotaka KAMEYA , Masakazu AOKI
IPC分类号： F04C18/02
CPC分类号： F04C18/0215 , F04C18/0223 , F04C18/0253 , F04C28/06 , F04C28/08 , F04C28/24 , F04C29/042 , F04C2270/19 , F04C2270/80
摘要： A high reliability water injected scroll air compressor is provided with an orbiting scroll, a fixed scroll corresponding to the orbiting scroll, a motor that generates driving force for making the orbiting scroll orbit the fixed scroll, a compressing path from a suction port to a discharge port, and a portion for injecting water into the compressing path. The operation is controlled by a switching operation in which water is injected into the compressing path and then no water is injected. Corrosion, failure of activation, and concerns about wrap contact when water is injected into an air end are avoided by switching the operation with water injection and the operation without water injection so as to prevent water from remaining in the air end.
摘要翻译：高可靠性注水涡旋式空气压缩机设有绕动涡旋盘，对应于绕动涡盘的固定涡旋盘，产生驱动力的马达，用于使绕动涡盘盘绕固定涡旋盘，从吸入口到排气口的压缩路径端口和用于将水注入压缩路径的部分。通过将水注入到压缩路径中并且没有水被注入的切换操作来控制操作。当水注入空气端时，腐蚀，活化失败以及对水分接触的担忧，避免了注水操作和无需注水的操作，以防止水留在空气端。

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