Refrigeration compressor structures and their methods of construction

Claim 2

In an integral motor and compressor comprising a base supporting a motor stator, a motor rotor, a compressor head, a valve assembly, a compressor block and a compressor crankshaft the improvement which comprises: said base being constructed from at least three planar laminations in stacked, face-to-face relation; a first of said laminations having an aperture formed therein the margins of which define a side wall of a cavity in said base for accommodating one end of said stator windings and rotor; a second and a third of said laminations comprising an end wall for said cavity; a low-pressure gas inlet passage integral with the end wall of said cavity and in circumferential alignment with said stator and rotor; an array of low-pressure gas inlet ports through the end wall of said cavity and in communication with said inlet passage; a low-pressure outlet port in communication with said inlet passage and through the end wall of said base abutting said compressor head; and an intake manifold passage in said compressor head connected between said valve assembly and said low-pressure gas outlet port.

Claim 3

An integral motor and compressor according to claim 1 wherein said laminations are normal to the rotational axis of said motor rotor.

Claim 4

An integral motor and compressor according to claim 2 wherein said motor stator is mounted in abutting relation to said base and said base lamination abutting said motor stator contains a low-pressure gas bypass path between said base and said stator through the side wall of said cavity.

Claim 5

An integral motor and compressor according to claim 3 wherein said base lamination abutting said motor stator contains at least one low-pressure gas bypass path through the side wall of said cavity adjacent each pole of said stator.

Claim 6

An integral motor and compressor according to claim 1 wherein said first lamination cavity is an aperture extending through the thickness of said lamination; wherein said second lamination is in face-to-face relation with said first lamination; wherein said third lamination has an arcuate aperture the margins of which define walls of said low-pressure gas inlet passage, said third lamination being in face-to-face relation with said second lamination on the face of said second lamination opposite said first lamination; said array of low-pressure gas inlet ports being apertures extending through the thickness of said second lamination in registry with the arcuate aperture in said third lamination; and a fourth lamination in face-to-face relation with said third lamination on the face of said third lamination opposite said second lamination; means maintaining said second, third and fourth laminations in fluid tight relationship along the edges of said arcuate aperture whereby the faces of said laminations in registry with said aperture and the margins of said aperture form fluid tight walls for said low-pressure gas inlet passage.

Claim 7

An integral motor and compressor according to claim 5 wherein said means maintaining said second, third and fourth laminations in fluid tight relationship is a bond extending over the abutting, face-to-face surfaces of said laminations.

Claim 8

A combination according to claim 1 including a fluid tight seal across the mating faces of laminations stacked in face-to-face relation.

Claim 9

A combination according to claim 7 wherein said fluid tight seal is a fused bond between said mating faces over their mating surfaces.

Claim 10

In an integral motor and compressor comprising a base supporting a motor stator, a motor rotor, a compressor head, a valve assembly, a compressor block and a compressor crankshaft the improvement which comprises: said base being constructed from at least three planar laminations in stacked, face-to-face relation; said base having an open-ended cavity for accommodating one end of said stator windings and rotor; a first and a second of said laminations comprising the side walls of said cavity; a third of said laminations comprising an end wall for said cavity; said base having a high pressure gas exhaust passage integral with the side wall of said cavity and coaxial with said stator and rotor; said base having a high-pressure gas inlet port in communication with said exhaust passage; and said base having a high-pressure gas outlet port in communication with said exhaust passage and through a wall of said base.

Claim 11

In an integral motor and compressor comprising a base supporting a motor stator, a motor rotor, a compressor head, a valve assembly, a compressor block and a compressor crankshaft the improvement which comprises: said base being constructed from at least three planar laminations in stacked, face-to-face relation; said base having an open-ended cavity for accommodating one end of said stator windings and rotor; a first and a second of said laminations comprising the side walls of said cavity; a third of said laminations comprising an end wall for said cavity; said base having a high pressure gas exhaust passage integral with the side wall of said cavity and coaxial with said stator and rotor; said base having a high-pressure gas inlet port in communication with said exhaust passage; and said base having a high-pressure gas outlet port in communication with said exhaust passage and through a wall of said base.

Claim 12

An integral motor and compressor according to claim 9 wherein said second lamination has a first aperture the margins of which forms walls of a first chamber therein, said first chamber being in communication with said exhaust passage and intermediate said inlet port and said exhaust passage said compressor head being mounted adjacent said base and having an exhaust manifold in communication with said inlet port; said second lamination has a second aperture the margins of which form walls of a second chamber therein, said second chamber being intermediate and in communication with said exhaust passage and said outlet port; and sealing means between said base inlet port and said compressor head exhaust manifold.

Claim 13

An integral motor and compressor according to claim 10 wherein said sealing means is an "O"-ring.

Claim 14

An integral motor and compressor according to claim 9 wherein said first lamination has an aperture in the plane thereof, the margins of which define side walls of said cavity having a thickness in the plane of the lamination; and wherein said second lamination is in face-to-face relation with said first lamination and has an arcuate aperture in registry with the side walls of said cavity defined in said first lamination, the margins of said arcuate aperture defining said high pressure gas exhaust passage.

Claim 15

An integral motor and compressor according to claim 9 including a fourth of said laminations comprising an end wall for said cavity; and wherein: said fourth lamination is intermediate said second and third laminations and in face-to-face relationship therewith; said base has first and second low-pressure gas inlet passages integral with the end wall of said cavity and in circumferential alignment with said stator and rotor; said fourth lamination has a first array of apertures through its thickness to provide a first array of low-pressure gas inlet ports through the end wall of said cavity and in communication with said first inlet passage; said fourth lamination has a second array of apertures through its thickness to provide a second array of low-pressure gas inlet ports through the end of said cavity and in communication with said second inlet passage; said base has a first low-pressure outlet port in communication with said first inlet passage and through the wall of said base adjacent said compressor head; said base has a second low-pressure outlet opening in communication with said second inlet passage and through the wall of said base adjacent said compressor head; said compressor head has a first intake manifold passage connected between said valve assembly and said first low-pressure gas outlet port; and said compressor head has a second intake manifold passage connected between said valve assembly and said second low pressure gas outlet port.

Claim 16

An integral motor and compressor according to claim 13 wherein said exhaust passage includes at least one muffler passage having noise reducing characteristics.

Claim 17

An integral motor and compressor according to claim 13 wherein said exhaust passage includes a plurality of muffler passages having noise reducing characteristics and being in series communication with one another.

Claim 18

An integral motor and compressor according to claim 13 wherein said base is constructed from a plurality of stacked, face-to-face planar laminations, the major surfaces of said laminations being normal to the rotational axis of said rotor; a first group of said laminations including at least said first and second laminations defining the side walls of said cavity; a second group of said laminations including said third and fourth laminations defining the end wall of said cavity having a region of generally circular form in their major surfaces; at least one lamination of said second group having apertures coaxial with said circular region which are annular sectors and are generally concentric with said circular region, the walls of said apertures defining portions of said first and second low-pressure inlet passages; at least said fourth lamination of said second group intermediate said one lamination and said cavity, said fourth lamination forming said end wall of said cavity and having arrays of apertures which register with said annular apertures in said one lamination and define said first and second inlet port arrays; at least said third lamination of said second group juxtaposed said one lamination on the side opposite said fourth lamination to define a portion of the walls of said low pressure passages in the areas in registry with said annular apertures; and means sealingly bonding said laminations in stacked face-to-face relationship.

Claim 19

An integral motor and compressor according to claim 13 wherein said base is constructed from a plurality of stacked, face-to-face planar laminations, the major surfaces of said laminations being normal to the rotational axis of said rotor; a first group of said laminations including said first and second laminations defining the side walls of said cavity having a region of generally annular form in their major surfaces and at least some laminations of said first group having apertures in the annular region in their major surfaces which are annular sectors generally concentric with the annular region, the walls of said apertures defining portions of said high pressure passage; said first group of laminations being stacked in face-to-face relationship with at least portions of said apertures of adjacent laminations overlapping each other; a second group of said laminations including said third and fourth laminations stacked with said first group and defining the end wall of said cavity, said second group of said laminations having a region of generally circular form in their major surfaces; at least one lamination of said second group having apertures coaxial with said circular region which are annular sectors and are generally concentric with said circular region, the walls of said apertures defining portions of said first and second low-pressure inlet passages; at least said fourth lamination of said second group intermediate said one lamination and said cavity, said fourth lamination forming said end wall of said cavity and having arrays of apertures which register with said annular apertures in said one lamination and define said first and second inlet port arrays; at least said third lamination of said second group juxtaposed said one lamination on the side opposite said fourth lamination to define a portion of the walls of said low pressure passages in the areas in registry with said annular apertures; and means sealingly bonding said laminations in stacked face-to-face relationship.

Claim 20

An integral motor and compressor according to claim 9 wherein said first lamination has an aperture in the plane thereof, the margins of which define side walls of said cavity having a thickness in the plane of the lamination; said second lamination has a plurality of arcuate apertures in registry with the side walls of said cavity defined in said first lamination, the margins of said arcuate apertures defining said high pressure gas exhaust passage and portions of muffler passages having noise reducing characteristics; a lamination in face-to-face relation to said second lamination having cavities in registry with the side walls of said cavity and with portions of said arcuate apertures to provide series communication between arcuate apertures in said high pressure gas exhaust passage.

Claim 21

An integral motor and compressor according to claim 13 including a sound shield coaxial with said compressor crankshaft.

Claim 22

An integral motor and compressor according to claim 19 wherein said sound shield includes sound absorbing insulation.

Claim 23

An integral motor and compressor according to claim 9 wherein said base is constructed from a plurality of stacked, face-to-face planar laminations, the major surfaces of said laminations being normal to the rotational axis of said rotor; a first group of said laminations including said first and second laminations defining the side walls of said cavity having a region of generally annular form in their major surfaces and at least some laminations of said first group having apertures in the annular region in their major surfaces which are annular sectors generally concentric with the annular region, the walls of said apertures defining portions of said high pressure passage; and means sealingly bonding said laminations in stacked, face-to-face relationship with at least portions of said apertures of adjacent laminations overlapping each other.

Claim 24

An integral motor and compressor according to claim 21 wherein at least two of said annular laminations in face-to-face relationship have their annular sector apertures offset circumferentially with respect to each other.

Claim 25

A base supporting a motor stator, a motor rotor and a compressor head, said base comprising: first and second planar laminations; at least third and fourth planar laminations intermediate said first and second laminations; one of said first and second planar laminations and at least one intermediate lamination contiguous with said one planar lamination having registering apertures adapted to form a cavity for accommodating one end of the stator windings and the motor rotor; at least one of said intermediate laminations having an aperture forming with said laminations contiguous therewith, a low pressure gas inlet passage; a lamination defining a wall of said low pressure gas inlet passage having an aperture forming a low pressure gas inlet port in communication with said cavity and with said inlet passage; a lamination defining a wall of said low pressure gas inlet passage having an aperture forming a low pressure gas outlet port in communication with said gas inlet passage and said compressor head; and means securing said laminations together in a fluid tight, stacked, face-to-face relationship to each other whereby the edges of said aperture forming said low pressure gas inlet passage are sealingly engaged with overlying laminations.

Claim 26

A base supporting a motor stator, a motor rotor and a compressor head, said base comprising: first and second planar laminations; at least third and fourth planar laminations intermediate said first and second laminations; one of said first and second planar laminations and at least one intermediate lamination contiguous with said one planar lamination having registering apertures adapted to form a cavity for accommodating one end of the stator windings and the motor rotor; at least one of said intermediate laminations having an aperture forming with said laminations contiguous therewith, a low pressure gas inlet passage; a lamination defining a wall of said low pressure gas inlet passage having an aperture forming a low pressure gas inlet port in communication with said cavity and with said inlet passage; a lamination defining a wall of said low pressure gas inlet passage having an aperture forming a low pressure gas outlet port in communication with said gas inlet passage and said compressor head; and means securing said laminations together in a fluid tight, stacked, face-to-face relationship to each other whereby the edges of said aperture forming said low pressure gas inlet passage are sealingly engaged with overlying laminations.

Claim 27

A base supporting a motor stator, a motor rotor and a compressor head, said base comprising: first and second planar laminations; at least one intermediate planar lamination between said first and second laminations; two contiguous laminations having registering apertures adapted to form a cavity for accommodating one end of said stator windings and said motor rotor; said intermediate lamination having an aperture integral with that portion of the side wall of said cavity and forming with said laminations contiguous therewith a high pressure gas exhaust passage; a lamination defining a wall of said high pressure gas exhaust passage having an aperture in communication with the compressor head and said high pressure exhaust passage to form a high pressure gas inlet port into said exhaust passage; a lamination defining a wall of said high pressure gas exhaust passage having an aperture in communication with said high pressure exhaust passage and extending through the wall of said base to form a high pressure gas outlet port; and means securing said laminations together in a fluid tight, stacked, face-to-face relationship to each other whereby the edges of said aperture forming said high pressure gas exhaust passage are sealingly engaged with overlying laminations.

Claim 28

A base supporting a motor stator, a motor rotor and a compressor head, said base comprising: first and second planar laminations; at least one intermediate planar lamination between said first and second laminations; two contiguous laminations having registering apertures adapted to form a cavity for accommodating one end of said stator windings and said motor rotor; said intermediate lamination having an aperture integral with that portion of the side wall of said cavity and forming with said laminations contiguous therewith a high pressure gas exhaust passage; a lamination defining a wall of said high pressure gas exhaust passage having an aperture in communication with the compressor head and said high pressure exhaust passage to form a high pressure gas inlet port into said exhaust passage; a lamination defining a wall of said high pressure gas exhaust passage having an aperture in communication with said high pressure exhaust passage and extending through the wall of said base to form a high pressure gas outlet port; and means securing said laminations together in a fluid tight, stacked, face-to-face relationship to each other whereby the edges of said aperture forming said high pressure gas exhaust passage are sealingly engaged with overlying laminations.