Dual capacity reciprocating compressor
Patent
·
OSTI ID:865222
- Wilkinsburg, PA
A multi-cylinder compressor 10 particularly useful in connection with northern climate heat pumps and in which different capacities are available in accordance with reversing motor 16 rotation is provided with an eccentric cam 38 on a crank pin 34 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 24 whose connecting rods 30 ride on a crank pin 36 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.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
- DOE Contract Number:
- W-7405-ENG-26
- Assignee:
- Westinghouse Electric Corp. (Pittsburgh, PA)
- Patent Number(s):
- US 4479419
- OSTI ID:
- 865222
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
/92/417/
10
16
180
24
30
34
36
38
accordance
apart
arranged
available
capacities
capacity
circumferential
circumferential position
clearance
climate
compressor
connecting
connecting rod
connecting rods
connection
crank
degree
direction
dual
dual capacity
eccentric
fraction
heat
heat pump
heat pumps
maximum
maximum value
mode
motor
moves
multi-cylinder
normal
northern
operation
opposite
opposite direction
opposite position
opposite positions
overall
particularly
particularly useful
piston
pistons
position
positions
provided
pump
pumps
rate
reciprocating
reciprocating compressor
reversing
ride
rods
rotation
rotational
rotational direction
shaft
throw
useful
value
volume
zero
10
16
180
24
30
34
36
38
accordance
apart
arranged
available
capacities
capacity
circumferential
circumferential position
clearance
climate
compressor
connecting
connecting rod
connecting rods
connection
crank
degree
direction
dual
dual capacity
eccentric
fraction
heat
heat pump
heat pumps
maximum
maximum value
mode
motor
moves
multi-cylinder
normal
northern
operation
opposite
opposite direction
opposite position
opposite positions
overall
particularly
particularly useful
piston
pistons
position
positions
provided
pump
pumps
rate
reciprocating
reciprocating compressor
reversing
ride
rods
rotation
rotational
rotational direction
shaft
throw
useful
value
volume
zero