Pumps – Expansible chamber type – Having pulsation dampening fluid receiving space
Patent
1977-10-31
1979-04-03
Croyle, Carlton R.
Pumps
Expansible chamber type
Having pulsation dampening fluid receiving space
417902, 62503, 62512, 55459R, F04B 1100, B01D 4512, F25B 4300
Patent
active
041474791
ABSTRACT:
A mechanical refrigeration system and method of operating the same with a combined hermetic compressor and suction accumulator unit. The compressor includes an electric motor and gas pump driven thereby enclosed within a hermetically sealed first casing having a top wall disposed thereabove in the normal operational orientation of said motor and pump. The accumulator comprises a second casing superimposed on the first casing, of inverted cup shape with the lower edge thereof joined to the first casing such that said first casing top wall closes the lower end of said second casing. Refrigerant fluid from the system suction return line enters the second casing via inlet means oriented to induce a whirling flow of refrigerant fluid in the accumulator casing generally concentric with the upright axis thereof, and a gas liquid-separating standpipe means is disposed within said second casing having a gas outlet extending through said first casing top wall and communicating with an inlet to said gas pump. In the refrigeration system and method, the aforementioned suction accumulator is combined with the hermetic compressor so as to cause heat exchange between the usual compressor components disposed within the first casing and the gaseous and/or liquid phases of refrigerant disposed within the accumulator during flow thereof from the evaporator to the compressor during both the running and shutdown phases of the refrigeration cycle to thereby augment compressor cooling, improve the efficiency of the system and absorb or muffle compressor running noises.
REFERENCES:
patent: 1548517 (1925-08-01), Dubrovin
patent: 2616517 (1952-11-01), Beck
patent: 3073515 (1963-01-01), Neubauer et al.
patent: 3796064 (1974-03-01), Ladusaw
Croyle Carlton R.
Gluck Richard E.
Hoffman John H.
Jeffers Albert L.
Tecumseh Products Company
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