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US 5,078,580 AGranted
Plural-stage gas compressor
AssigneeDresser-Rand Company
InventorsBernard F. Miller, John A. Sawyer
Life of this patent
Estimating the term…
Abstract
The compressor, of the reciprocating-piston type is actuated by a camshaft confined in a small, compact frame. Cams translate cross-heads which are slidably guided within the frame, and which are threadedly coupled to depending stubs of the pistons. A bolted-on head plate confines valving components atop cylinders set within the frame, and the head plate has passageways formed internally to conduct the gas to and from successive stages of compression.
Claims17
A plural-stage gas compressor, comprising:
- a frame;
- said frame having a throughgoing bore formed therein, and a plurality of separate channels formed therein which open onto said bore and externally onto outer surfaces of said frame;
- a camshaft rotatably journalled in said bore;
- a piston cylinder in each of said channels;
- and
- a piston in each of said cylinders;
- wherein
- said camshaft has a plurality of cams thereon;
- and further including
- first means interposed between said camshaft and said pistons for causing said cams of said camshaft to translate said pistons, cyclically, in a first reciprocable direction;
- second means interposed between said cylinders and said camshaft for causing said pistons to translate, cyclically, in a second reciprocable direction;
- head plates fixed upon said outer surfaces of said frame in closure of said channels;
- and
- inlet and discharging valving interposed between each of said head plates and said cylinders.
11 more elements
A plural-stage gas compressor, according to claim 14, wherein:
- each said crosshead has a threaded bore formed therein;
- and
- each said piston has a depending, threaded stub which is threadedly engaged with said threaded bore of an associated crosshead.
A plural-stage gas compressor, comprising:
- a frame;
- said frame having a throughgoing bore formed therein, and a plurality of separate, parallel channels formed therein which open onto said bore and externally onto an outer surface of said frame;
- a camshaft rotatably journalled in said bore;
- a piston cylinder in each of said channels;
- and
- a piston in each of said cylinders;
- wherein
- said camshaft has a plurality of cams thereon;
- and further including
- first means interposed between said camshaft and said pistons for causing said cams of said camshaft to translate said pistons, cyclically, in a first reciprocable direction;
- second means interposed between said cylinders and said camshaft for causing said pistons to translate, cyclically, in a second reciprocable direction;
- a head plate fixed upon said outer surface of said frame in closure of said channels;
- inlet and discharge valving interposed between each of said cylinders and said head plate;
- and
- passageways formed in said head plate communicating between said valving;
- and wherein
- said head plate has two ports, for admitting and discharging gas thereinto and therefrom, which open onto said passageways and externally of said head plate, respectively.
14 more elements
Dependencies are inferred from the claim text.