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Title: Dual capacity reciprocating compressor

Abstract

A multi-cylinder compressor particularly useful in connection with northern climate heat pumps and in which different capacities are available in accordance with reversing motor rotation is provided with an eccentric cam on a crank pin under a fraction of the connecting rods, and arranged for rotation upon the crank pin between opposite positions 180[degree] apart so that with cam rotation on the crank pin such that the crank throw is at its normal maximum value all pistons pump at full capacity, and with rotation of the crank shaft in the opposite direction the cam moves to a circumferential position on the crank pin such that the overall crank throw is zero. Pistons whose connecting rods ride on a crank pin without a cam pump their normal rate with either crank rotational direction. Thus a small clearance volume is provided for any piston that moves when in either capacity mode of operation. 6 figs.

Inventors:
Issue Date:
OSTI Identifier:
7152714
Patent Number(s):
4479419 A
Application Number:
PPN: US 6-438429
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (United States) PTO; EDB-94-123545
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Resource Relation:
Patent File Date: 2 Nov 1982
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; COMPRESSORS; DESIGN; OPERATION; HEAT PUMPS; CAPACITY; MECHANICAL SHAFTS; MACHINE PARTS; SHAFTS; 320106* - Energy Conservation, Consumption, & Utilization- Building Equipment- (1987-)

Citation Formats

Wolfe, R.W. Dual capacity reciprocating compressor. United States: N. p., 1984. Web.
Wolfe, R.W. Dual capacity reciprocating compressor. United States.
Wolfe, R.W. Tue . "Dual capacity reciprocating compressor". United States.
@article{osti_7152714,
title = {Dual capacity reciprocating compressor},
author = {Wolfe, R.W.},
abstractNote = {A multi-cylinder compressor particularly useful in connection with northern climate heat pumps and in which different capacities are available in accordance with reversing motor rotation is provided with an eccentric cam on a crank pin under a fraction of the connecting rods, and arranged for rotation upon the crank pin between opposite positions 180[degree] apart so that with cam rotation on the crank pin such that the crank throw is at its normal maximum value all pistons pump at full capacity, and with rotation of the crank shaft in the opposite direction the cam moves to a circumferential position on the crank pin such that the overall crank throw is zero. Pistons whose connecting rods ride on a crank pin without a cam pump their normal rate with either crank rotational direction. Thus a small clearance volume is provided for any piston that moves when in either capacity mode of operation. 6 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {10}
}