US3698840A
Expired / Lapsed
US
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Compressor muffler construction
Assignee: Tecumseh Products Co
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Filing: 1971-05-26
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Granted: 1972-10-17
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Expires: 1991-05-26
Abstract
Abstract A muffler construction for a hermetic compressor wherein the muffler is made up of half-shell body and cover members connected together with their open ends facing one another and having matching ribs arranged at an acute angle to the gas flow path between the inlet and outlet of the muffler. The surfaces of the juxtaposed peripheral walls and ribs adjacent the open end of each member are coplanar. A flat sealing gasket is disposed between the members coextensive with the juxtaposed surfaces of the peripheral walls of the members. Hence, the gasket serves to space the juxtaposed surfaces of the ribs a predetermined distance apart to thereby define wide and thin flow passages successively communicating the muffler chambers formed by the transverse ribs and associated side and end walls of the members.
Inventors
- 👤 Paul B Hover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:40
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/0027; F04B39/0055; F04B39/0072; Y; Y10; Y10S; Y10S181/00; Y10S181/403; Y10S417/00; Y10S417/902
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
239 words
In a hermetic compressor having a hermetic casing for receiving refrigerant gas and a refrigerant gas pump disposed in said casing including a pumping chamber, the improvement comprising a muffler having a first port connected to said pumping chamber and a second port spaced from said first port and operably connected to the refrigeration gas circuit of said compressor, said muffler comprising a body member and a cover member each having a half-shell portion open at one end and closed at the opposite end by an outer wall with a peripheral wall extending around the edge of said outer wall, each of said members having a plurality of ribs extending in acute angle relationship relative to one another between opposite portions of said peripheral wall and defining with the associated outer peripheral walls of the associated member a series of pockets disposed in succession between said ports, said peripheral wall and ribs of each of said members having coplanar surfaces adjacent the open end thereof, said members being connected together with their open ends facing one another and said ribs juxtaposed in matching relationship, and a gasket disposed between and in sealing engagement with said coplanar surfaces of the juxtaposed peripheral walls of said members whereby said coplanar surfaces of said ribs of said body member are spaced from the juxtaposed coplanar surfaces of said ribs of said cover member to define flow passages therebetween communicating with said pockets.
Claim 2
Dependent Claim
239 words
In a hermetic compressor having a hermetic casing for receiving refrigerant gas and a refrigerant gas pump disposed in said casing including a pumping chamber, the improvement comprising a muffler having a first port connected to said pumping chamber and a second port spaced from said first port and operably connected to the refrigeration gas circuit of said compressor, said muffler comprising a body member and a cover member each having a half-shell portion open at one end and closed at the opposite end by an outer wall with a peripheral wall extending around the edge of said outer wall, each of said members having a plurality of ribs extending in acute angle relationship relative to one another between opposite portions of said peripheral wall and defining with the associated outer peripheral walls of the associated member a series of pockets disposed in succession between said ports, said peripheral wall and ribs of each of said members having coplanar surfaces adjacent the open end thereof, said members being connected together with their open ends facing one another and said ribs juxtaposed in matching relationship, and a gasket disposed between and in sealing engagement with said coplanar surfaces of the juxtaposed peripheral walls of said members whereby said coplanar surfaces of said ribs of said body member are spaced from the juxtaposed coplanar surfaces of said ribs of said cover member to define flow passages therebetween communicating with said pockets.
Claim 3
Dependent Claim
81 words
The compressor as Defined in claim 1 wherein each said half-shell portion is generally rectangular in shape and wherein said peripheral wall is composed of spaced side walls extending longitudinally of said muffler and spaced end walls transverse to said side walls, said ribs comprising first and second ribs in each member converging at one end centrally of one of said side walls and each extending at an acute angle therefrom toward individual junctions with the other of said side walls.
Claim 4
Dependent Claim
37 words
The compressor as defined in claim 2 wherein said ribs of each of said members each extend at about a 75* angle from said one wall and diverge at about a 30* angle relative to one another.
Claim 5
Dependent Claim
87 words
The compressor as defined in claim 2 wherein said pockets of each of said members consist of three in-line pockets made up of a center pocket defined by said first and second ribs and associated side wall, and first and second end pockets disposed on opposite sides of said center pocket with said first and second ribs respectively serving as one wall thereof, said first and second ports opening respectively into said first and second pockets at points disposed remote from said first and second ribs respectively.
Claim 6
Dependent Claim
28 words
The compressor as defined in claim 4 wherein said second port is disposed in the portion of one of said side walls defining in part said second pocket.
Claim 7
Dependent Claim
34 words
The compressor as defined in claim 5 wherein said first port comprises a passage extending through said end wall of said body member associated with said first pocket approximately midway between said side walls.
Claim 8
Dependent Claim
27 words
The compressor as defined in claim 6 wherein said one of said side walls having said second port therein comprises a side wall of said body member.
Claim 9
Dependent Claim
94 words
The compressor as defined in claim 1 wherein said pump comprises a cylinder block having a piston reciprocable horizontally therein and an electric motor operably connected to reciprocate said piston and superimposed on said block with its rotational axis upright, said body member having an extension at one end thereof juxtaposed to said cylinder block of said pump serving as a cylinder head therefor and having a discharge chamber therein communicating said pumping chamber with said first port, said second port being connected to a discharge conduit leading to the exterior of said casing.
Claim 10
Dependent Claim
46 words
The compressor as defined in claim 8 wherein said cover member is coextensive only with said half-shell portion of said body member and is disposed laterally adjacent said motor above said cylinder block and on the same said of said body member as said cylinder block.
Claim 11
Dependent Claim
65 words
The compressor as defined in claim 1 wherein said gasket has a uniform thickness selected in accordance with the length of the juxtaposed surfaces of said ribs extending between the inner edges of said gasket so that the cross-sectional area of each of said flow passages is correlated with the volumetric flow rate of the refrigerant gas being pumped by said pump through said muffler.
Claim 12
Dependent Claim
205 words
A muffler for use in a hermetic compressor comprising a body member and a cover member each having a half-shell portion open at one end and closed at the opposite end by an outer wall with a peripheral wall extending around the edge of said outer wall, said muffler having an inlet port and an outlet port spaced longitudinally of said muffler from said inlet port, each of said members having a plurality of ribs extending in acute angle relationship relative to one another between opposite portions of said peripheral wall and defining with the associated outer peripheral walls of the associated member a series of pockets disposed in succession between said ports, said peripheral wall and ribs of each of said members having coplanar surfaces adjacent the open end thereof, said members being connected together with their open ends facing one another and said ribs juxtaposed in matching relationship, and a gasket disposed between and in sealing engagement with said coplanar surfaces of the juxtaposed peripheral wAlls of said members whereby said coplanar surfaces of said ribs of said body member are spaced from the juxtaposed coplanar surfaces of said ribs of said cover member to define flow passages therebetween communicating with said pockets.
Claim 13
Dependent Claim
205 words
A muffler for use in a hermetic compressor comprising a body member and a cover member each having a half-shell portion open at one end and closed at the opposite end by an outer wall with a peripheral wall extending around the edge of said outer wall, said muffler having an inlet port and an outlet port spaced longitudinally of said muffler from said inlet port, each of said members having a plurality of ribs extending in acute angle relationship relative to one another between opposite portions of said peripheral wall and defining with the associated outer peripheral walls of the associated member a series of pockets disposed in succession between said ports, said peripheral wall and ribs of each of said members having coplanar surfaces adjacent the open end thereof, said members being connected together with their open ends facing one another and said ribs juxtaposed in matching relationship, and a gasket disposed between and in sealing engagement with said coplanar surfaces of the juxtaposed peripheral wAlls of said members whereby said coplanar surfaces of said ribs of said body member are spaced from the juxtaposed coplanar surfaces of said ribs of said cover member to define flow passages therebetween communicating with said pockets.
Claim 14
Dependent Claim
64 words
The muffler as defined in claim 11 wherein each of said peripheral walls is composed of spaced side walls extending longitudinally of said muffler and spaced end walls transverse to said side walls, said ribs comprising first and second ribs in each member converging at one of said side walls and each extending therefrom toward individual junctions with the other of said side walls.
Claim 15
Dependent Claim
37 words
The muffler as defined in claim 12 wherein said ribs of each of said member each extend at about a 75* angle from said one wall and diverge at about a 30* angle relative to one another.
Claim 16
Dependent Claim
87 words
The muffler as defined in claim 11 wherein said pockets of each of said members consist of three in-line pockets made up of a center pocket defined by said first and second ribs and associated side walls, and first and second end pockets disposed on opposite sides of said center pocket with said first and second ribs respectively serving as one wall thereof, said first and second ports opening respectively into said first and second pockets at points disposed remote from said first and second ribs respectively.
Claim 17
Dependent Claim
56 words
The muffler as defined in claim 11 including an extension at one end thereof forming a cylinder head adapted to overlie a cylinder block of the compressor and having a discharge chamber therein communicating with said inlet port, said second port being adapted for connection to a discharge conduit leading to the exterior of the compressor.
Claim 18
Dependent Claim
36 words
The muffler as defined in claim 15 wherein said cover member is coextensive only with said half-shell portion of said body member and said cylinder head extension protrudes therebeyond as an extension of said body member.
Claim 19
Dependent Claim
29 words
The muffler as defined in claim 16 wherein said outlet port is disposed in one of said side walls defining in part said second pocket of said body member.
Claim 20
Dependent Claim
40 words
The muffler as defined in claim 17 wherein said inlet port comprises a passage extending through said end wall of said body member associated with said first pocket between said discharge chamber and said first pocket of said body member.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |