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US 5,288,211 AGranted
Internal baffle system for a multi-cylinder compressor
AssigneeTecumseh Products Company
InventorEmanuel D. Fry
Life of this patent
Estimating the term…
Abstract
A compressor assembly is disclosed including a compressor mechanism mounted within a hermetically sealed housing. A cylinder block contains a plurality of reciprocating pistons within compression chambers. The compression chambers include a discharge valve which permits compressed refrigerant to empty into the common discharge chamber. A baffle system is included within the common discharge muffler chamber to eliminate pressure pulses and cross talk between discharge valve assemblies, thereby increasing the discharge valve opening speed and correspondingly increasing the compressor efficiency.
Claims15
A hermetic compressor comprising:
- a hermetically sealed housing;
- a motor-compressor unit disposed within said housing, said unit including a cylinder block defining a plurality of cylinder bores, said unit having a plurality of pistons reciprocatable within said cylinder bores, each bore including an associated discharge valve, said unit including a cylinder head attached over each bore;
- a common muffler chamber within said housing in communication with said discharge valves, into which said discharge valves empty, said muffler chamber including an exit port;
- and
- a baffle arrangement separating said common muffler chamber into a plurality of sub-chambers, each sub-chamber in communication through a cylinder head with a respective said discharge valve, each said discharge valve emptying directly into a separate sub-chamber, said baffle arrangement permitting fluid communication between said sub-chambers at other locations than at said exit port, said baffle arrangement preventing undeflected pressure pulses to travel from one discharge valve to any other discharge valve, whereby said baffle arrangement reduces the pressure pulses between said discharge valves and discharge valve performance is enhanced.
2 more elements
A hermetic compressor comprising:
- a hermetically sealed housing;
- motor compressor unit having a crankcase, a plurality of cylinder bores in said crankcase, a plurality of pistons disposed within respective said cylinder bores, and a scotch yoke means connected to a vertical crankshaft disposed in said crankcase and driven by said motor for reciprocating said pistons and compressing refrigerant gas in said cylinder bores, a cylinder had attached to said crankcase over each said cylinder bore;
- a discharge means for reducing discharge pressure pulses, said discharge means connected to said crankcase and in communication with said cylinder bores, said discharge means having a plurality of baffled sub-chambers, each said cylinder head emptying into a separate sub-chamber, said discharge means having at least one exit port communicating to said housing, said baffled chambers in communication together not at said exit port, whereby discharge pressure spikes between said cylinder bores are reduced and undeflected pressure pulses between discharge valves are prevented thereby increasing discharge valve performance.
A hermetic compressor comprising:
- a hermetically sealed housing;
- a vertically oriented scotch yoke motor-compressor unit in said housing comprising a compressor mechanism being drivingly connected to a motor;
- said compressor mechanism including a common muffler chamber, a plurality of discharge valve assemblies that empty compressed gas into said common muffler chamber, and a top cover portion attached over said compressor mechanism;
- a top cover plate attached to said compressor mechanism;
- said common muffler chamber formed between said crankcase and said top cover portion, said common muffler chamber including a discharge port communicating to the interior of said housing, said common muffler chamber communicating with said discharge valve assemblies, said common muffler chamber having a plurality of web portions dividing said common muffler chamber into a plurality of sub-chambers connected by restricted passageways, each said discharge valve assembly emptying into a separate sub-chamber, said web portions preventing undeflected pressure pulses between discharge valves, whereby discharge cross talk and back pressure spikes between said discharge valves are reduced to increase discharge valve performance.
2 more elements
Dependencies are inferred from the claim text.