发明名称 |
Scroll type fluid machine and air suspension apparatus using the same |
摘要 |
A pressure keeping mechanism is provided downstream of a discharge port of a compressor. The pressure keeping mechanism is set to a small flow path area having only a bypass orifice until a pressure in a downstream pipe reaches a predetermined pressure after the operation is started, the pressure keeping mechanism is set to a large flow path area of a pressure keeping valve which is opened when the pressure exceeds the predetermined pressure and the bypass orifice, thereby changing the flow path area at least in two stages. The pressure in the upstream pipe which is almost closed by the pressure keeping valve can be thus increased at a dash and the pressure in a compression chamber can also be increased swiftly immediately after the compressor is started.
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申请公布号 |
US2009085312(A1) |
申请公布日期 |
2009.04.02 |
申请号 |
US20080285036 |
申请日期 |
2008.09.29 |
申请人 |
HITACHI, LTD. |
发明人 |
MORI SHUNSUKE;SUEFUJI KAZUTAKA |
分类号 |
F04B49/06;B60G17/052;F04B49/08;F04B49/24;F04C18/02 |
主分类号 |
F04B49/06 |
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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