发明申请
- 专利标题: REFRIGERANT EXPANSION VALVE HAVING ELECTRICALLY OPERATED INLET SHUTOFF WITH IMPROVED ARMATURE DAMPENING
- 专利标题(中): 具有改进的防摔功能的电动开关阀的制冷剂膨胀阀
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申请号: US09918424申请日: 2001-07-27
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公开(公告)号: US20030019225A1公开(公告)日: 2003-01-30
- 发明人: William L. Breyer , Patrick A. Bloedel
- 申请人: EATON CORPORATION
- 申请人地址: US OH Cleveland
- 专利权人: EATON CORPORATION
- 当前专利权人: EATON CORPORATION
- 当前专利权人地址: US OH Cleveland
- 主分类号: F25B041/04
- IPC分类号: F25B041/04 ; F25B041/06
摘要:
A combination refrigerant expansion valve adapted for operation by a thermally responsive element, and a solenoid actuated, preferably pilot operated inlet shutoff valve. The solenoid has a resilient elastomeric stop-ring for cushioning deceleration and limiting travel of the armature to prevent closing of the working air gap between the armature and a pole piece. The armature also has a cross port therethrough to alleviate flow-induced pressure decrease on the distal end of the armature from causing the armature to stick in the actuated position when the coil is de-energized.
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