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CENTRIFUGAL REFRIGERANT GAS COMPRESSOR

  • US 3,612,710 A
  • Filed: 04/30/1970
  • Issued: 10/12/1971
  • Est. Priority Date: 04/30/1970
  • Status: Expired due to Term
First Claim
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1. A centrifugal refrigerant gas compressor including a casing and an impeller journaled for rotation in said casing, detecting means for detecting movement of said impeller from normal operating position, said detecting means including a support fixedly mounted in said casing with the inner end of said support located in juxtaposition to said impeller, a probe pivotally mounted in said end of said support and having a contact portion extending outwardly from said support, means cooperable with said probe to yieldingly maintain said contact portion thereof in operative position in proximity to said impeller for engagement thereby upon movement of said impeller out of normal operating position, said probe upon contact by said impeller being instantaneously movable about said pivotal mounting in the direction of rotation of said impeller out of engagement therewith, electrical contact means mounted in said support for actuation by said probe upon movement of said contact portion out of operative position, and means operable to hold said probe out of said operative position subsequent to contact by said impeller.

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