|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||625/13 ; 602/197 ; 602/217 ; 602/505|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 43 인용 특허 : 14|
An improved efficiency economizer system for compressors incorporates the use of a check valve blocking return flow into the economizer return line. The economizer return line communicates with an economizer port, which communicates with a compression chamber. Pressure in the compression chamber can vary during the operational cycle of the compressor. Thus, in the past, there has sometimes been backflow of refrigerant through the economizer injection port and into the return line. The present invention prevents this backflow. Most preferably, the inventi...
[What is claimed is:] [1.]a compressor pump unit having at least compression chamber;an economizer injection port for selectively communicating a refrigerant from an economizer return line into said compression chamber; anda check valve for allowing flow from said economizer return line and into said injection port, but blocking flow from said injection port into said economizer return line.