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US 7,604,466 B2Granted
Discharge muffler system for a rotary compressor
AssigneeTecumseh Products Company
InventorsNelik I Dreiman, John S Kosco, Robert J Reynolds
Life of this patent
Estimating the term…
Abstract
An improved muffler system for a compressor assembly where the muffler is disposed within the compressor housing and a peripheral edge of the muffler abuts, and expansively engages, the interior surface of the housing in an interference fit relationship. The compressor pump is attached to the muffler where the pump is substantially thermally and vibrationally isolated from the housing. The muffler, the compressor pump and the compressor housing define a series of chambers in which noise generated by the compressor pump is dissipated. The dimensions of the chambers are chosen to cause acoustical waves having specific, undesirable frequencies to cancel each other out.
Claims23
A compressor assembly, comprising:
- a compressor housing having an interior surface defining an interior housing volume;
- a motor disposed within said housing volume, said motor having a rotatable shaft;
- a compressor mechanism drivingly connected to said shaft, said compressor mechanism disposed within said housing volume and including a cylinder block having a peripheral surface adjacent the housing interior surface and a main bearing together with the cylinder block forming a compression chamber, said bearing rotatably supporting said shaft, said cylinder block peripheral surface not being directly fixed to the housing interior surface;
- a muffler disposed within said housing volume, said muffler including a housing portion having a peripheral edge abutting the interior surface of said compressor housing in an interference fit relationship, said muffler being supported by said compressor housing, said compressor mechanism main bearing attached to said muffler and supported by said muffler within said compressor housing, said muffler housing portion facing and forming with said main bearing portion a first muffler chamber configured to dissipate acoustic waves, at least one opening in said muffler housing portion fluidly connecting said first chamber with said housing volume;
- and
- a discharge port in said main bearing extending from said compression chamber and opening into said first muffler chamber;
- wherein said muffler and said interior surface of said compressor housing define a second chamber and a third chamber, said first chamber and said second chamber in fluid communication through at least one discharge passage, said first chamber, said second chamber and said at least one discharge passage configured to dissipate acoustic waves produced by said compressor mechanism.
4 more elements
A compressor assembly, comprising:
- a compressor housing having an interior surface defining an interior housing volume;
- a motor disposed within said housing volume, said motor having a rotatable shaft;
- a compressor mechanism drivingly connected to said shaft, said compressor mechanism disposed within said housing volume and including a cylinder block and a main bearing together forming a compression chamber, said bearing rotatably supporting said shaft;
- a muffler disposed within said housing volume, said muffler including a housing portion having a peripheral edge abutting the interior surface of said compressor housing in an interference fit relationship, said muffler being supported by said compressor housing, said compressor mechanism main bearing attached to said muffler and supported by said muffler within said compressor housing, said muffler housing portion facing and forming with said main bearing portion a first muffler chamber configured to dissipate acoustic waves, at least one opening in said muffler housing portion fluidly connecting said first chamber with said housing volume;
- and
- a discharge port in said main bearing extending from said compression chamber and opening into said first muffler chamber;
- said peripheral edge of said muffler housing portion defined by at least three protrusions extending from said muffler housing portion, said at least three protrusions abutting the interior of said compressor housing to resiliently expand said compressor housing, at least one gap between the muffler housing portion and the compressor housing interior being positioned intermediate the three protrusions.
4 more elements
A compressor assembly, comprising:
- a compressor housing having an interior surface defining an interior housing volume;
- a motor disposed within said housing volume, said motor having a rotatable shaft;
- a compressor mechanism drivingly connected to said shaft, said compressor mechanism disposed within said housing volume and including a cylinder block and a main bearing together forming a compression chamber, said bearing rotatably supporting said shaft;
- a muffler disposed within said housing volume, said muffler including a housing portion having a peripheral edge abutting the interior surface of said compressor housing in an interference fit relationship, said muffler being supported by said compressor housing, said compressor mechanism main bearing attached to said muffler and supported by said muffler within said compressor housing, said muffler housing portion facing and forming with said main bearing portion a first muffler chamber configured to dissipate acoustic waves, at least one opening in said muffler housing portion fluidly connecting said first chamber with said housing volume;
- and
- a discharge port in said main bearing extending from said compression chamber and opening into said first muffler chamber;
- said motor in an interference fit relationship with said compressor housing, said compressor mechanism and said motor aligned by said compressor housing and said muffler housing portion, said shaft operatively aligned with said compressor mechanism and said motor.
4 more elements
A compressor assembly, comprising:
- a compressor housing having an interior surface defining an interior housing volume;
- a motor disposed within said housing volume, said motor having a rotatable shaft;
- a compressor mechanism drivingly connected to said shaft, said compressor mechanism disposed within said housing volume and including a cylinder block and a main bearing together forming a compression chamber, said bearing rotatably supporting said shaft;
- a muffler disposed within said housing volume, said muffler including a housing portion having a peripheral edge abutting the interior surface of said compressor housing in an interference fit relationship, said muffler being supported by said compressor housing, said compressor mechanism main bearing attached to said muffler and supported by said muffler within said compressor housing, said muffler housing portion facing and forming with said main bearing portion a first muffler chamber configured to dissipate acoustic waves, at least one opening in said muffler housing portion fluidly connecting said first chamber with said housing volume;
- and
- a discharge port in said main bearing extending from said compression chamber and opening into said first muffler chamber;
- wherein said cylinder block has an outer circumferential periphery that is spaced radially from the housing interior surface along its entire periphery and said periphery is not fixed to said housing interior surface.
4 more elements
A compressor assembly, comprising:
- a compressor housing having an interior surface;
- a motor disposed within said housing, said motor having a rotatable shaft;
- a compressor mechanism drivingly connected to said shaft, said compressor mechanism disposed within said housing and including a cylinder block and a main bearing together forming a compression chamber, said bearing rotatably supporting said shaft;
- a muffler disposed within said housing, said muffler including a housing portion having a peripheral edge abutting and connected to the interior surface of said compressor housing, said muffler being supported by said compressor housing, said compressor mechanism main bearing attached to said muffler and supported by said muffler within said compressor housing whereby said cylinder block is also supported by said muffler, said muffler housing portion facing and forming with said main bearing a first muffler chamber configured to dissipate acoustic waves;
- and
- a discharge port in said main bearing extending from said compression chamber and opening into said first muffler chamber;
- wherein said cylinder block has an outer circumferential periphery that is spaced radially from the housing interior surface along its entire periphery and said periphery is not fixed to said housing interior surface.
4 more elements
A compressor assembly, comprising:
- a compressor housing having an interior surface defining an interior housing volume;
- a motor disposed within said housing volume, said motor having a rotatable shaft;
- a compressor mechanism drivingly connected to said shaft, said compressor mechanism disposed within said housing volume and including a cylinder block and a main bearing together forming a compression chamber, said bearing rotatably supporting said shaft;
- a muffler disposed within said housing volume, said muffler including a housing portion having a peripheral edge abutting the interior surface of said compressor housing in an interference fit relationship, said muffler being supported by said compressor housing, said compressor mechanism main bearing attached to said muffler and supported by said muffler within said compressor housing, said muffler housing portion facing and forming with said main bearing portion a first muffler chamber configured to dissipate acoustic waves, at least one opening in said muffler housing portion fluidly connecting said first chamber with said housing volume;
- and
- a discharge port in said main bearing extending from said compression chamber and opening into said first muffler chamber;
- said muffler peripheral edge expansively engaging said compressor housing.
4 more elements
A compressor assembly, comprising:
- a compressor housing having an interior surface;
- a motor disposed within said housing, said motor having a rotatable shaft;
- a compressor mechanism drivingly connected to said shaft, said compressor mechanism disposed within said housing and including a cylinder block having a peripheral surface adjacent the housing interior surface and a main bearing together with the cylinder block forming a compression chamber, said bearing rotatably supporting said shaft, said cylinder block peripheral surface not being directly fixed to the housing interior surface;
- a muffler disposed within said housing, said muffler including a housing portion having a peripheral edge abutting and connected to the interior surface of said compressor housing, said muffler being supported by said compressor housing, said compressor mechanism main bearing attached to said muffler and supported by said muffler within said compressor housing whereby said cylinder block is also supported by said muffler, said muffler housing portion facing and forming with said main bearing a first muffler chamber configured to dissipate acoustic waves;
- and
- a discharge port in said main bearing extending from said compression chamber and opening into said first muffler chamber;
- wherein said muffler and said interior surface of said compressor housing define a second chamber and a third chamber, said first chamber and said second chamber in fluid communication through at least one discharge passage, said first chamber, said second chamber and said at least one discharge passage configured to dissipate acoustic waves produced by said compressor mechanism.
4 more elements
A compressor assembly, comprising:
- a compressor housing having an interior surface;
- a motor disposed within said housing, said motor having a rotatable shaft;
- a compressor mechanism drivingly connected to said shaft, said compressor mechanism disposed within said housing and including a cylinder block having a peripheral surface adjacent the housing interior surface and a main bearing together with the cylinder block forming a compression chamber, said bearing rotatably supporting said shaft, said cylinder block peripheral surface not being directly fixed to the housing interior surface;
- a muffler disposed within said housing, said muffler including a housing portion having a peripheral edge abutting and connected to the interior surface of said compressor housing, said muffler being supported by said compressor housing, said compressor mechanism main bearing attached to said muffler and supported by said muffler within said compressor housing whereby said cylinder block is also supported by said muffler, said muffler housing portion facing and forming with said main bearing a first muffler chamber configured to dissipate acoustic waves;
- and
- a discharge port in said main bearing extending from said compression chamber and opening into said first muffler chamber;
- said peripheral edge of said muffler housing portion defined by at least three protrusions extending from said muffler housing portion, said at least three protrusions abutting the interior of said compressor housing to resiliently expand said compressor housing, at least one gap between the muffler housing portion and the compressor housing interior being positioned intermediate the three protrusions.
4 more elements
A compressor assembly, comprising:
- a compressor housing having an interior surface;
- a motor disposed within said housing, said motor having a rotatable shaft;
- a compressor mechanism drivingly connected to said shaft, said compressor mechanism disposed within said housing and including a cylinder block and a main bearing together forming a compression chamber, said bearing rotatably supporting said shaft;
- a muffler disposed within said housing, said muffler including a housing portion having a peripheral edge abutting and connected to the interior surface of said compressor housing, said muffler being supported by said compressor housing, said compressor mechanism main bearing attached to said muffler and supported by said muffler within said compressor housing whereby said cylinder block is also supported by said muffler, said muffler housing portion facing and forming with said main bearing a first muffler chamber configured to dissipate acoustic waves;
- and
- a discharge port in said main bearing extending from said compression chamber and opening into said first muffler chamber;
- said motor in an interference fit relationship with said compressor housing, said compressor mechanism and said motor aligned by said compressor housing and said muffler housing portion, said shaft operatively aligned with said compressor mechanism and said motor.
4 more elements
Dependencies are inferred from the claim text.