Swash plate type compressor

Claim 2

A swash plate type compressor comprising a. a cylindrical casing member, b. a pair of cylinder blocks disposed in said casing member with said casing member circumferentially surrounding said cylinder blocks along a substantial portion of the length of said cylinder blocks, each cylinder block being provided with at least one cylinder bore, c. a driving shaft rotatably mounted in said cylinder blocks, d. a swash plate fixedly mounted on said driving shaft, e. at least one double-acting piston having first and second piston parts, each piston being mounted with said respective first and second piston parts at opposite sides of said swash plate for reciprocation in the respective cylinder bores, f. cylinder head members detachably mounted in an air-tight manner on respective oppositely facing outer ends of said cylinder blocks, each cylinder head member being provided with an annular partition member fitted on each of said outer ends thereby to define a low pressure gas passageway and a high pressure gas passageway between said cylinder blocks and said cylinder head members, said low pressure gas passageway being operatively communicated with an intake port and the cylinder bores through check valve means for a refrigerant gas, said high pressure gas passageway being operatively communicated with a discharge port and the cylinder bores through check valve means for a compressed refrigerant gas, and g. a cover member mounted in an air-tight manner directly on said casing member to form a substantial part of a silencing chamber outside of said casing member between said cover member and said casing member at a position intermediate of the outlets of the cylinder bores operatively communicating with said high pressure gas passageway, said silencing chamber being communicating with said high pressure gas passageway through pipe members having a volume smaller than that of said silencing chamber, wherein said pipe members are detachably interposed between said casing member and said cover member, whereby said silencing chamber is communicated with said high pressure gas passageway through an aperture formed in said pipe members.

Claim 3

A swash plate type compressor according to claim 1, wherein the high pressure gas passageways and the silencing chamber are operatively communicated with each other by pipe means having a plurality of small holes.

Claim 4

A swash plate type compressor according to claim 2, wherein the volume of the pipe means is relatively small as compared to the volume of the silencing chamber.

Claim 5

A swash plate type compressor according to claim 4, wherein the silencing chamber is located at the junction of the cylinder blocks.

Claim 6

A swash plate type compressor according to claim 5, wherein the pipe means is inserted between the cylindrical casing and the cover member and pressedly supported by resilient means.

Claim 7

A swash plate type compressor according to claim 1, wherein said pipe members are provided with a plurality of small holes.

Claim 8

A compressor according to claim 1, wherein inner walls of said casing member directly engage a substantial poRtion of the circumference of said cylinder blocks to hold said blocks in position in said casing member, wherein a portion of the outwardly facing surface of said casing member is flattened, and wherein said cover member is abuttingly clamped along said flattened portion of said casing member.

Claim 9

A swash plate type compressor comprising a. a casing member, b. a pair of cylinder blocks disposed in said casing member with said casing member circumferentially surrounding said cylinder blocks along a substantial portion of the length of said cylinder blocks, each cylinder block being provided with a plurality of cylinder bores, c. a driving shaft rotatably mounted in said cylinder blocks and having a swash plate fixedly mounted thereon, d. a plurality of double-acting pistons, each piston being mounted with respective first and second piston parts at opposite sides of said swash plate for reciprocation in the respective cylinder bores, e. a pair of cylinder head members detachably mounted in an air-tight manner on respective oppositely facing outer ends of said cylinder blocks, each cylinder head member being provided with an annular partition member for defining a low pressure gas passageway and a high pressure gas passageway between said cylinder blocks and said cylinder head members, said low pressure gas passageway communicating with an intake port for a refrigerant gas and the cylinder bores through check valve means, said high pressure gas passageway communicating with a discharge port for a compressed refrigerant gas having a relatively higher temperature and the cylinder bores through check valve means, and f. a cover member mounted in an air-tight manner directly on said casing member to form a substantial part of a silencing chamber outside of said casing member between said cover member and said casing member at a position intermediate of the outlets of the cylinder bores operatively communicating with said high pressure gas passageway, said silencing chamber being communicated with said high pressure gas passageway through pipe members having a volume smaller than that of said silencing chamber, wherein said pipe members are interposed between a substantially straight surface of said casing member and an inner surface of said cover member at a position corresponding to an opening of said high pressure gas passageway.

Claim 10

A swash plate type compressor comprising a. a casing member, b. a pair of cylinder blocks disposed in said casing member with said casing member circumferentially surrounding said cylinder blocks along a substantial portion of the length of said cylinder blocks, each cylinder block being provided with a plurality of cylinder bores, c. a driving shaft rotatably mounted in said cylinder blocks and having a swash plate fixedly mounted thereon, d. a plurality of double-acting pistons, each piston being mounted with respective first and second piston parts at opposite sides of said swash plate for reciprocation in the respective cylinder bores, e. a pair of cylinder head members detachably mounted in an air-tight manner on respective oppositely facing outer ends of said cylinder blocks, each cylinder head member being provided with an annular partition member for defining a low pressure gas passageway and a high pressure gas passageway between said cylinder blocks and said cylinder head members, said low pressure gas passageway communicating with an intake port for a refrigerant gas and the cylinder bores through check valve means, said high pressure gas passageway communicating with a discharge port for a compressed refrigerant gas having a relatively higher temperature and the cylinder bores through check valve means, and f. a cover member mounted in an air-tight manner directly on said casing member to form a substantial part of a silencing chamber outside of said casing member between said cover member and said casing member at a position intermediate of the outlets of the cylinder bores operatively communicating with said high pressure gas passageway, said silencing chamber being communicated with said high pressure gas passageway through pipe members having a volume smaller than that of said silencing chamber, wherein said pipe members are interposed between a substantially straight surface of said casing member and an inner surface of said cover member at a position corresponding to an opening of said high pressure gas passageway.

Claim 11

A swash plate type compressor according to claim 8, wherein the high and low pressure gas passageways are annularly shaped around the drive shaft.

Claim 12

A swash plate type compressor according to claim 8, wherein said pipe members are provided with a plurality of small holes.

Claim 13

In a swash plate type compressor comprising a. a cylindrical casing member, b. a pair of cylinder blocks fitted in said cylindrical casing member, each cylinder block being provided with three pairs of cylinder bores arranged in a concentric relation, c. a driving shaft rotatably mounted in a bore formed in said cylinder blocks in the axial direction of said cylinder blocks, d. a swash plate fixedly mounted on said driving shaft, e. three double-acting pistons, each piston being mounted with respective first and second piston parts on opposite sides of said swash plate for reciprocation in the respective bores, f. a pair of cylinder head members detachably mounted in an air-tight manner on respective oppositely facing outer ends of said cylinder blocks, each head member being provided with an annular partition member for defining a pair of low and high pressure gas passageways between said cylinder blocks and said cylinder head members, said low pressure gas passageways being operatively communicated with an intake port for a refrigerant gas and said cylinder bores through check valve means provided in said cylinder head members, said high pressure gas passageways being operatively communicated with a discharge port for a compressed refrigerant gas and said cylinder bores through check valve means provided in said cylinDer head members, g. a cover member having said discharge port and mounted in an air-tight manner on said casing member whereby a silencing chamber is formed between said cover member and said casing member at a position intermediate of the outlets of said cylinder bores operatively communicating with said high pressure gas passageways through a pair of pipe members, the improvement wherein said pipe members having a plurality of small holes are interposed between said cover member and said casing members, said pipe members being pressedly supported by resilient means.

Claim 14

In a swash plate type compressor comprising a. a cylindrical casing member, b. a pair of cylinder blocks fitted in said cylindrical casing member, each cylinder block being provided with three pairs of cylinder bores arranged in a concentric relation, c. a driving shaft rotatably mounted in a bore formed in said cylinder blocks in the axial direction of said cylinder blocks, d. a swash plate fixedly mounted on said driving shaft, e. three double-acting pistons, each piston being mounted with respective first and second piston parts on opposite sides of said swash plate for reciprocation in the respective bores, f. a pair of cylinder head members detachably mounted in an air-tight manner on respective oppositely facing outer ends of said cylinder blocks, each head member being provided with an annular partition member for defining a pair of low and high pressure gas passageways between said cylinder blocks and said cylinder head members, said low pressure gas passageways being operatively communicated with an intake port for a refrigerant gas and said cylinder bores through check valve means provided in said cylinder head members, said high pressure gas passageways being operatively communicated with a discharge port for a compressed refrigerant gas and said cylinder bores through check valve means provided in said cylinDer head members, g. a cover member having said discharge port and mounted in an air-tight manner on said casing member whereby a silencing chamber is formed between said cover member and said casing member at a position intermediate of the outlets of said cylinder bores operatively communicating with said high pressure gas passageways through a pair of pipe members, the improvement wherein said pipe members having a plurality of small holes are interposed between said cover member and said casing members, said pipe members being pressedly supported by resilient means.

Claim 15

A swash plate type compressor according to claim 11, wherein the high and low pressure gas passageways are annularly shaped around the drive shaft.

Claim 16

A swash plate type compressor according to claim 12, wherein sealing means is provided between the cylinder block and the pipe means, and the resilient means biases the pipe means against the cylinder block through the sealing means.

Claim 17

A swash plate type compressor according to claim 11, wherein the volume of the pipe means is relatively small as compared to the volume of the silencing chamber.

Claim 18

A swash plate type compressor according to claim 14, wherein the silencing chamber is located at the junction of the cylinder blocks.

Claim 19

A swash plate type compressor comprising a. a cylindrical casing member, b. a pair of cylinder blocks fitted in said cylindrical casing member, each cylinder block being provided with three pairs of cylinder bores arranged in a concentric relation, c. a driving shaft rotatably mounted in a bore formed in said cylinder blocks in the axial direction of said cylinder blocks, d. a swash plate member fixedly mounted on said driving shaft, e. three double-acting pistons, each piston being mounted with respective first and second piston parts on opposite sides of said swash plate member for reciprocation in the respective cylinder bores, f. a pair of cylinder head members detachably mounted in an air-tight manner on respective oppositely facing outer ends of said cylinder blocks and provided with an annular partition member for defining a pair of low and high pressure gas passageways between said cylinder blocks and said cylinder head members, said low pressure gas passageways being operatively communicated with an intake for a refrigerant gas and said cylinder bores through first check valve means provided in said cylinder head members, said high pressure gas passageways being operatively communicated with a discharge port for a compressed refrigerant gas and said cylinder bores through second check valve means provided in said cylinder head members, g. a cover member provided with said discharge port and mounted in an air-tight manner on said casing member, whereby a silencing chamber is formed between said cover member and casing member at a position intermediate of the outlets of said cylinder bores operatively communicating with said high pressure gas passageways through a pair of resilient members interposed between the inner surface of said cover member and said cylinder blocks through holes formed in said casing members, said resilient members enclosing a smaller volume than said silencing chamber and having a passageway thereby allowing the flowing-out of said compressed refrigerant gas from said high pressure gas passageways to said silencing chamber, whereby an undesirable pressure pulsation occurring in said compressor is effectively absorbed.

Claim 20

A swash plate type compressor comprising a. a cylindrical casing member, b. a pair of cylinder blocks fitted in said cylindrical casing member, each cylinder block being provided with three pairs of cylinder bores arranged in a concentric relation, c. a driving shaft rotatably mounted in a bore formed in said cylinder blocks in the axial direction of said cylinder blocks, d. a swash plate member fixedly mounted on said driving shaft, e. three double-acting pistons, each piston being mounted with respective first and second piston parts on opposite sides of said swash plate member for reciprocation in the respective cylinder bores, f. a pair of cylinder head members detachably mounted in an air-tight manner on respective oppositely facing outer ends of said cylinder blocks and provided with an annular partition member for defining a pair of low and high pressure gas passageways between said cylinder blocks and said cylinder head members, said low pressure gas passageways being operatively communicated with an intake for a refrigerant gas and said cylinder bores through first check valve means provided in said cylinder head members, said high pressure gas passageways being operatively communicated with a discharge port for a compressed refrigerant gas and said cylinder bores through second check valve means provided in said cylinder head members, g. a cover member provided with said discharge port and mounted in an air-tight manner on said casing member, whereby a silencing chamber is formed between said cover member and casing member at a position intermediate of the outlets of said cylinder bores operatively communicating with said high pressure gas passageways through a pair of resilient members interposed between the inner surface of said cover member and said cylinder blocks through holes formed in said casing members, said resilient members enclosing a smaller volume than said silencing chamber and having a passageway thereby allowing the flowing-out of said compressed refrigerant gas from said high pressure gas passageways to said silencing chamber, whereby an undesirable pressure pulsation occurring in said compressor is effectively absorbed.

Claim 21

A compressor according to claim 16, wherein said resilient members comprise coil springs through which the refrigerant gas flows.

Claim 22

A swash plate type compressor comprising a. a cylindrical casing member, b. a pair of cylinder blocks disposed in said casing member, each cylinder block being provided with at least one cylinder bore, c. a driving shaft rotatably mounted in said cylinder blocks, d. a swash plate fixedly mounted on said driving shaft, e. at least one double-acting piston having First and second piston parts, each piston being mounted with said respective first and second piston parts at opposite sides of said swash plate for reciprocation in the respective cylinder bores, f. cylinder head members detachably mounted in an air-tight manner on respective oppositely facing outer ends of said cylinder blocks, each cylinder head member being provided with an annular partition member fitted on each of said outer ends thereby to define a low pressure gas passageway and a high pressure gas passageway between said cylinder blocks and said cylinder head members, said low pressure gas passageway being operatively communicated with an intake port and the cylinder bores through check valve means for a refrigerant gas, said high pressure gas passageway being operatively communicated with a discharge port and the cylinder bores through check valve means for a compressed refrigerant gas, and g. a cover member mounted in an air-tight manner on said casing member whereby a silencing chamber is formed between said cover member and said casing member at a position intermediate of the outlets of the cylinder bores operatively communicating with said high pressure gas passageway, said silencing chamber being communicated with said high pressure gas passageway through pipe members having a volume smaller than that of said silencing chamber, wherein said pipe members are detachably interposed between said casing member and said cover member, whereby said silencing chamber is communicated with said high pressure gas passageway through an aperture formed in said pipe members, wherein the high pressure gas passageways and the silencing chamber are operatively communicated with each other by pipe means having a plurality of small holes, and wherein the pipe means is inserted between the cylindrical casing member and the cover member and pressedly supported by resilient means.

Claim 23

A swash plate type compressor comprising a. a cylindrical casing member, b. a pair of cylinder blocks disposed in said casing member, each cylinder block being provided with at least one cylinder bore, c. a driving shaft rotatably mounted in said cylinder blocks, d. a swash plate fixedly mounted on said driving shaft, e. at least one double-acting piston having First and second piston parts, each piston being mounted with said respective first and second piston parts at opposite sides of said swash plate for reciprocation in the respective cylinder bores, f. cylinder head members detachably mounted in an air-tight manner on respective oppositely facing outer ends of said cylinder blocks, each cylinder head member being provided with an annular partition member fitted on each of said outer ends thereby to define a low pressure gas passageway and a high pressure gas passageway between said cylinder blocks and said cylinder head members, said low pressure gas passageway being operatively communicated with an intake port and the cylinder bores through check valve means for a refrigerant gas, said high pressure gas passageway being operatively communicated with a discharge port and the cylinder bores through check valve means for a compressed refrigerant gas, and g. a cover member mounted in an air-tight manner on said casing member whereby a silencing chamber is formed between said cover member and said casing member at a position intermediate of the outlets of the cylinder bores operatively communicating with said high pressure gas passageway, said silencing chamber being communicated with said high pressure gas passageway through pipe members having a volume smaller than that of said silencing chamber, wherein said pipe members are detachably interposed between said casing member and said cover member, whereby said silencing chamber is communicated with said high pressure gas passageway through an aperture formed in said pipe members, wherein the high pressure gas passageways and the silencing chamber are operatively communicated with each other by pipe means having a plurality of small holes, and wherein the pipe means is inserted between the cylindrical casing member and the cover member and pressedly supported by resilient means.

Claim 24

A compressor according to claim 18, wherein the volume of the pipe means is relatively small as compared to the volume of the silencing chamber.

Claim 25

A compressor according to claim 19, wherein the silencing chamber is located at the junction of the cylinder blocks.

Claim 26

A silencing chamber arrangement for a swash plate type compressor of the type having high pressure gas passageways located at opposite sides of a rotatable swash plate; said arrangement comprising a silencing chamber positioned between said high pressure gas passageways, a discharge port communicating with the silencing chamber for discharging gas from said silencing chamber, and detachable silencing communicating means for communicating each of said high pressure gas passageways with said silencing chamber, said silencing communicating means including resilient means for absorbing pressure pulsations therein.

Claim 27

A silencing chamber arrangement for a swash plate type compressor of the type having high pressure gas passageways located at opposite sides of a rotatable swash plate; said arrangement comprising a silencing chamber positioned between said high pressure gas passageways, a discharge port communicating with the silencing chamber for discharging gas from said silencing chamber, and detachable silencing communicating means for communicating each of said high pressure gas passageways with said silencing chamber, said silencing communicating means including resilient means for absorbing pressure pulsations therein.

Claim 28

An arrangement according to claim 21, wherein said detachable silencing communication means includes a resilient coiled spring for each high pressure gas passageway positioned such that all of the gas in the associated high pressure gas passageway flows therethrough.

Claim 29

An arrangement according to claim 22, wherein said coiled springs are interposed between a cover member of the compressor which delimits one side of the silencing chamber and a casing member of the compressor.

Claim 30

An arrangement according to claim 21, wherein said detachable silencing communicating means includes a resilient member and a detachable pipe member, said pipe member having apertures through the side walls thereof through which the gas in the associated high pressure gas passageway flows.

Claim 31

An arrangement according to claim 21, wherein said detachable silencing communicating means includes a resilient member for resiliently holding other parts of said communicating means in position, and wherein said high pressure gas passageways are located symmetrically with respect to the volumetric center of said silencing chamber.