发明名称 |
Screw vacuum pump having valve controlled cooling chambers |
摘要 |
A discharge side housing 3 has a third cooling water chamber 19 communicating with a first cooling water chamber 7 of a main housing 1 through a cooling water passage 26. The third cooling water chamber 19 is connected to a cooling water outlet pipe 27 which is connected to an inlet port 28a of a three-way valve 28. The three-way valve 28 has a switching port 28b which can communicate with a pipe line 29 connected to the first cooling water chamber 7. The three-way valve 28 has an outlet 28c connected to a pipe line 30 which communicates with a second cooling water chamber 22 of a suction side housing 2. The second cooling water chamber 22 is connected to a cooling water discharge line 31 provided with a flow control valve 32 allowing a back pressure for a cooling water flowing thereinto.
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申请公布号 |
US6315535(B1) |
申请公布日期 |
2001.11.13 |
申请号 |
US20000647251 |
申请日期 |
2000.09.22 |
申请人 |
TAIKO KIKAI INDUSTRIES, CO., LTD. |
发明人 |
HOSHI TOSHIYASU;YOSHIMURA MASASHI |
分类号 |
F04C25/02;F04C18/16;F04C28/28;F04C29/04;(IPC1-7):F04C18/16 |
主分类号 |
F04C25/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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