Refrigeration – Refrigeration producer – With lubricant handling means
Reexamination Certificate
2007-06-12
2007-06-12
Jones, Melvin (Department: 3744)
Refrigeration
Refrigeration producer
With lubricant handling means
C062S404000
Reexamination Certificate
active
11320715
ABSTRACT:
A refrigeration system including a direct expansion evaporator with a substantially vertical header through which a fluid mixture of a refrigerant and oil is pumped, a compressor for compressing the refrigerant, and a suction tube in fluid communication with the header and the compressor through which a stream of a first fluid mixture is drawn substantially in a first direction from the header by the compressor. The first fluid mixture exerts a first fluid pressure in a second direction substantially opposite to the first direction. A second fluid mixture is located in the header and subject to a second fluid pressure substantially greater than the first fluid pressure to create a pressure differential. The system also includes an extraction apparatus with a passage subject to the pressure differential, through which passage the second fluid mixture is drawn into the suction tube.
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Jones Melvin
National Refrigeration & Air Conditioning Canada Corp.
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