F - Mech Eng,Light,Heat,Weapons – 25 – B
Patent
F - Mech Eng,Light,Heat,Weapons
25
B
F25B 41/00 (2006.01) F25B 39/02 (2006.01) F25B 47/00 (2006.01)
Patent
CA 2533413
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.
Gowling Lafleur Henderson Llp
National Refrigeration & Air Conditioning Canada Corp.
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