Means for lubricating swash plate air conditioning compressor

Details Means for lubricating swash plate air conditioning compressor Means for lubricating swash plate air conditioning compressor

1974-03-22

1976-01-06

Freeh, William L.

Pumps

Three or more cylinders arranged in parallel, radial, or...

184 616, F04B 112, F01M 100

Patent

active

039307581

ABSTRACT:
A six-cylinder swash plate air conditioning compressor having reciprocal double-acting pistons within a swash plate chamber positioned centrally between axially spaced front and rear cylinder blocks having intermediate suction and discharge gas crossover passageways in the cylinder blocks. The swash plate chamber provides a crankcase for receiving lubricant returned from the front head suction chamber by means of piston blow-by during the compression stroke of the pistons. The suction pressure in the crankcase is at a higher level than the pressue in the suction gas crossover passageway while being at a lower level than the pressure in the cylinder head gas discharge chamber creating the necessary positive pressure gradient to circulate the lubricant internally within the compressor. Radial slots are formed in the cylinder block outer faces to provide first and second internal lubricant differential pressure flow passages between the shaft thrust and journal bearings and the cylinder block suction cavities communicating via the suction crossover passageway to the front head suction chamber.

REFERENCES:
patent: 3057545 (1962-10-01), Ransom et al.
patent: 3215341 (1965-11-01), Francis
patent: 3380651 (1968-04-01), Niki et al.
patent: 3577891 (1971-05-01), Nemoto
patent: 3750848 (1973-08-01), Nakayama
patent: 3801227 (1974-04-01), Nakayama
patent: 3838942 (1974-10-01), Pokorny

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