US20140086760A1 - Compressor - Google Patents

Compressor Download PDF

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Publication number
US20140086760A1
US20140086760A1 US14/031,543 US201314031543A US2014086760A1 US 20140086760 A1 US20140086760 A1 US 20140086760A1 US 201314031543 A US201314031543 A US 201314031543A US 2014086760 A1 US2014086760 A1 US 2014086760A1
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United States
Prior art keywords
wall
cylinder block
valve
discharge
bottom portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US14/031,543
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English (en)
Inventor
Kenji Nishida
Nobutoshi Banno
Jun Kondo
Toshiyuki Kobayashi
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Toyota Industries Corp
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Toyota Industries Corp
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Filing date
Publication date
Application filed by Toyota Industries Corp filed Critical Toyota Industries Corp
Assigned to KABUSHIKI KAISHA TOYOTA JIDOSHOKKI reassignment KABUSHIKI KAISHA TOYOTA JIDOSHOKKI ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BANNO, NOBUTOSHI, KOBAYASHI, TOSHIYUKI, KONDO, JUN, NISHIDA, KENJI
Publication of US20140086760A1 publication Critical patent/US20140086760A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B1/141—Details or component parts
    • F04B1/145—Housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1036—Component parts, details, e.g. sealings, lubrication
    • F04B27/1045—Cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1036—Component parts, details, e.g. sealings, lubrication
    • F04B27/1081—Casings, housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/122—Cylinder block
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves

Definitions

  • the present invention relates to a compressor, and more particularly to a compressor including a cylinder block and a housing.
  • Japanese Laid-Open Patent Publication No. 8-121330 describes a reciprocating compressor including single-headed pistons.
  • the compressor includes a cylinder block having six bores. Each of the portions that respectively defines the bore has a bottom portion forming a valve seat.
  • the valve seat includes a discharge port.
  • the bores form chambers that are completely independent from one another.
  • a rear housing is coupled to a rear end of the cylinder block.
  • a suction chamber is formed in a central portion of the rear housing and opens toward a rear end of the rear housing.
  • a discharge chamber is formed at the radially outer side of the suction chamber.
  • a discharge valve and a retainer are arranged in the discharge port near the discharge chamber.
  • the cylinder block is coupled with the rear housing to hold the discharge valve and the retainer.
  • the discharge chamber has a thick outer wall that supports the partition from the rear. This suppresses deformation of the partition.
  • the formation of the thick outer wall in the rear housing decreases the volume of the discharge chamber. This may increase noise by a certain amount when refrigerant is discharged.
  • the thick outer wall decreases the length of the discharge valve arranged near the discharge chamber in the corresponding discharge chamber. As a result, the discharge valve becomes less flexible. This may adversely affect the moving characteristics of the discharge valve.
  • One aspect of the present invention is a compressor provided with a cylinder block including a cylinder bore.
  • the cylinder block includes an end.
  • the end of the cylinder block includes a partition that closes one end of the cylinder bore.
  • the partition includes a bottom portion forming a bottom surface of the cylinder bore.
  • the bottom portion includes a discharge port, and the discharge port extends through the bottom portion and is in communication with the cylinder bore.
  • a housing is coupled to the end of the cylinder block.
  • the housing includes an annular outer wall, an annular inner wall located at an inner side of the outer wall, a discharge chamber formed between the outer wall and the inner wall, and a suction chamber formed at an inner side of the inner wall.
  • a discharge valve is held between the cylinder block and the housing.
  • the outer wall includes two partition supports that are in contact with parts of the bottom portion. The two partition supports are arranged on opposite sides of the discharge valve and extend toward the inner wall.
  • FIG. 1 is a cross-sectional view entirely showing a compressor according to a first embodiment of the present invention
  • FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1 ;
  • FIG. 3 is a cross-sectional view taken along line B-B in FIG. 1 ;
  • FIG. 4 is a plan view of a discharge valve of a discharge valve shown in FIG. 1 ;
  • FIG. 5 is a rear view of a front housing in the compressor shown in FIG. 1 ;
  • FIG. 6 is a cross-sectional view taken along line C-C in FIG. 5 ;
  • FIG. 7 is a cross-sectional view taken along line D-D in FIG. 1 ;
  • FIG. 8 is a cross-sectional view taken along line E-E in FIG. 1 ;
  • FIG. 9 is a front view of a rear housing in the compressor shown in FIG. 1 ;
  • FIG. 10 is a front view of a rear housing in a compressor according to a second embodiment of the present invention.
  • FIG. 11 is a cross-sectional view taken along line F-F in FIG. 10 ;
  • FIG. 12 is a rear view of a front housing in a compressor according to a third embodiment of the present invention.
  • FIG. 13 is a cross-sectional view taken along line G-G in FIG. 12 ;
  • FIG. 14 is a front view of a rear housing shown in FIG. 12 .
  • FIG. 1 shows a compressor 10 that is a double-headed piston swash plate compressor.
  • a housing of the compressor 10 includes two coupled cylinder blocks 11 and 12 , a front housing 13 coupled to the cylinder block 11 , and a rear housing 14 coupled to the cylinder block 12 .
  • Bolts 56 integrally fasten the front housing 13 , the cylinder blocks 11 and 12 , and the rear housing 14 .
  • a shaft hole 11 A extends through the cylinder block 11
  • a shaft hole 12 A extends through the cylinder block 12
  • a rotation shaft 15 is inserted into the shaft holes 11 A and 12 A and supported to be rotatable by a sealed surface of the wall of the shaft holes 11 A and 12 A.
  • the rotation shaft 15 includes a front projecting end where a lip seal type sealing device 16 is arranged between the rotation shaft 15 and an inner wall of the front housing 13 .
  • the sealing device 16 is accommodated in an accommodation chamber 13 A defined between the rotation shaft 15 and the inner wall of the front housing 13 .
  • a swash plate 17 which rotates integrally with the rotation shaft 15 , is fixed to the rotation shaft 15 .
  • a swash plate chamber 18 is formed in the cylinder blocks 11 and 12 .
  • the swash plate 17 is accommodated in the swash plate chamber 18 .
  • the swash plate 17 includes an annular base 17 A.
  • a thrust bearing 19 is arranged between one end of the front cylinder block 11 and the base 17 A of the swash plate 17 .
  • a thrust bearing 20 is arranged between the other end of the rear cylinder block 12 and the base 17 A of the swash plate 17 .
  • the thrust bearings 19 and 20 sandwich the swash plate 17 and restrict movement of the swash plate 17 in the direction of the axis L of the rotation shaft 15 . Further, the thrust bearings 19 and 20 are pressed against the open ends of the shaft holes 11 A and 12 A in the cylinder blocks 11 and 12 .
  • the front cylinder block 11 includes three front cylinder bores 21 arranged around the rotation shaft 15 .
  • the rear cylinder block 12 includes three rear cylinder bores 22 arranged around the rotation shaft 15 .
  • the front cylinder bores 21 are paired and aligned with the rear cylinder bores 22 in the direction of the axis L.
  • a double-headed piston 23 is inserted into each pair of the aligned cylinder bores 22 .
  • the front end of the cylinder block 11 includes a partition 11 B that closes one end of each of the front cylinder bores 21 .
  • the partition 11 B is formed integrally with the cylinder block 11 .
  • the partition 11 B includes a bottom portion 11 C forming a bottom surface of each front cylinder bore 21 .
  • the rear end of the cylinder block 12 includes a partition 12 B that closes one end of each of the rear cylinder bores 22 .
  • the partition 12 B is formed integrally with the cylinder block 12 .
  • the partition 12 B includes a bottom portion 12 C forming a bottom surface of each rear cylinder bore 22 .
  • each double-headed piston 23 two shoes 24 sandwich the swash plate 17 and transmit the rotating motion of the swash plate 17 , which is rotated integrally with the rotation shaft 15 , to the double-headed piston 23 .
  • This reciprocates the double-headed piston 23 in the corresponding front cylinder bore 21 and rear cylinder bore 22 .
  • a front compression chamber 25 is defined in the front cylinder bore 21 between the double-headed piston 23 and the bottom portion 11 C.
  • a rear compression chamber 26 is defined in the rear cylinder bore 22 between the double-headed piston 23 and the bottom portion 12 C.
  • the cylinder block 11 includes three cylinder block suction chambers 27 arranged around the shaft hole 11 A. Each cylinder block suction chamber 27 is arranged between the front cylinder bores 21 that are adjacent to each other in the circumferential direction around the shaft hole 11 A. The cylinder block suction chambers 27 are arranged at equal intervals around the shaft hole 11 A. Further, the cylinder block 11 includes three cylinder block discharge chambers 29 arranged around the shaft hole 11 A. Each cylinder block discharge chamber 29 is arranged between the front cylinder bores 21 that are adjacent to each other in the circumferential direction around the shaft hole 11 A. The cylinder block discharge chambers 29 are arranged at equal intervals around the shaft hole 11 A. Further, the cylinder block discharge chambers 29 are located at the outer sides of the cylinder block suction chambers 27 in the radial direction of the cylinder block 11 .
  • three discharge ports 30 extend through the bottom portion 11 C of the cylinder block 11 to communicate the front cylinder bores 21 with front discharge chambers 28 .
  • a discharge valve 31 is arranged at the discharge ports 30 near the front discharge chambers 28 so as to cover the discharge ports 30 .
  • the discharge valve 31 includes fixed portions 31 A, which are held between an inner wall 34 and the partition 11 B, and valve portions 31 B, which extend from the fixed portions 31 A toward an outer wall 33 .
  • a gasket 32 is formed integrally with a retainer 32 A, which restricts the opening angle of the discharge valve 31 .
  • the front housing 13 includes the outer wall 33 and the inner wall 34 , which is located at the inner side of the outer wall 33 .
  • Each of the outer wall 33 and the inner wall 34 are annular.
  • the front discharge chambers 28 are formed between the outer wall 33 and the inner wall 34
  • front suction chambers 55 are formed at the inner side of the inner wall 34 .
  • the front suction chambers 55 are in communication with the accommodation chamber 13 A.
  • the outer wall 33 isolates the front discharge chambers 28 , which are formed at the inner side of the outer wall 33 , from the exterior and has a predetermined thickness in the radial direction.
  • the outer wall 33 includes a plurality of partition supports 33 A that extend toward the inner wall 34 .
  • the partition supports 33 A are in contact with parts of the bottom portions 11 C.
  • the distal end of each valve portion 31 B is arranged between two of the partition supports 33 A.
  • the outer wall 33 is shaped to have a predetermined thickness in the radial direction, while extending toward the inner side at portions that receive the bolts 56 .
  • the outer wall 33 includes multiple pairs of the partition supports 33 A that come into contact with the bottom portion 11 C.
  • the partition supports 33 A in each pair are arranged on opposite sides of the distal end of the corresponding valve portion 31 B and extend toward the inner wall 34 .
  • the inner wall 34 isolates the front discharge chambers 28 , which are formed at the outer side of the inner wall 34 , from the front suction chambers 55 , which are formed at the inner side of the inner wall 34 .
  • Parts of the inner wall 34 form valve supports 34 A.
  • the fixed portions 31 A are held between the valve supports 34 A and the bottom portion 11 C with the valve supports 34 A partially covering parts of the bottom portion 11 C.
  • ribs 35 connect the inner wall 34 and the outer wall 33 .
  • the ribs 35 are opposed to the bottom portion 11 C. Further, the ribs 35 connect the valve supports 34 A of the inner wall 34 with portions of the outer wall 33 located between the two partition supports 33 A of each pair.
  • the longitudinal direction of the ribs 35 conforms to the radial direction of the compressor.
  • the ribs 35 each have a height T2 in the direction of axis L.
  • the inner wall 34 and the outer wall 33 each have a height T1 in the direction of axis L.
  • the height T2 of the ribs 35 is set to be lower than the height T1 of the inner wall 34 and the outer wall 33 .
  • the cylinder block 11 and the front housing 13 are coupled to each other with the discharge valve 31 and the gasket 32 arranged in between.
  • Through holes extend through the discharge valve 31 and the gasket 32 to communicate the cylinder block discharge chambers 29 , which are formed in the cylinder block 11 , with the front discharge chambers 28 , which are formed in the front housing 13 .
  • through holes extend through the discharge valve 31 and the gasket 32 to communicate the front suction chambers 55 , which are formed in the front housing 13 , with the front suction chambers 55 , which are formed in the front housing 13 .
  • the coupling of the cylinder block 11 and the front housing 13 with the discharge valve 31 and the gasket 32 arranged in between forms the front suction chambers 55 , which are in communication with the cylinder block suction chambers 27 and isolated from the exterior, and the front discharge chambers 28 , which are in communication with the cylinder block suction chambers 27 and isolated from the exterior.
  • the cylinder block 12 includes three cylinder block suction chambers 36 arranged around the shaft hole 12 A. Each cylinder block suction chamber 36 is arranged between the rear cylinder bores 22 that are adjacent to each other in the circumferential direction around the shaft hole 12 A. The cylinder block suction chambers 36 are arranged at equal intervals around the shaft hole 12 A. Further, the cylinder block 12 includes three cylinder block discharge chambers 45 arranged around the shaft hole 12 A. Each cylinder block discharge chamber 45 is arranged between the rear cylinder bores 22 that are adjacent to each other in the circumferential direction around the shaft hole 12 A. The cylinder block discharge chambers 45 are arranged at equal intervals around the shaft hole 12 A.
  • the cylinder block discharge chambers 45 are located at the outer sides of the cylinder block suction chambers 36 in the radial direction of the cylinder block 12 .
  • the cylinder block suction chambers 27 are paired and aligned with the cylinder block suction chambers 36 in the direction in which the axis L extends.
  • three discharge ports 39 extend through the bottom portion 12 C of the cylinder block 12 to communicate the rear cylinder bores 22 with rear discharge chambers 38 .
  • a discharge valve 40 is arranged at the discharge ports 39 near the rear discharge chambers 38 so as to cover the discharge ports 39 .
  • the discharge valve 40 includes fixed portions 40 A, which are held between an inner wall 43 and the partition 12 B, and valve portions 40 B, which extend from the fixed portions 40 A toward an outer wall 42 .
  • a gasket 41 is formed integrally with a retainer 41 A, which restricts the opening angle of the discharge valve 40 .
  • the front housing 13 includes the outer wall 42 and the inner wall 43 , which is located at the inner side of the outer wall 42 .
  • Each of the outer wall 42 and the inner wall 43 are annular.
  • the rear discharge chambers 38 are formed between the outer wall 42 and the inner wall 43
  • rear suction chambers 57 are formed at the inner side of the inner wall 43 .
  • the rear suction chambers 57 are in communication with a suction chamber 37 located at the inner side of the rear suction chambers 57 .
  • the outer wall 42 isolates the rear discharge chambers 38 , which are formed at the inner side of the outer wall 42 , from the exterior and has a predetermined thickness in the radial direction.
  • the outer wall 42 includes a plurality of partition supports 42 A that extend toward the inner wall 43 .
  • the partition supports 42 A are in contact with parts of the bottom portions 12 C.
  • the distal end of each valve portion 40 B is arranged between two of the partition supports 42 A.
  • the partition supports 42 A in each pair are arranged on opposite sides of the distal end of the corresponding valve portion 40 B and extend toward the inner wall 43 .
  • the inner wall 43 isolates the rear discharge chambers 38 , which are formed at the outer side of the inner wall 43 , from the rear suction chambers 57 , which are formed at the inner side of the inner wall 43 .
  • Parts of the inner wall 43 form valve supports 43 A.
  • the fixed portions 40 A are held between the valve supports 43 A and the bottom portion 12 C with the valve supports 43 A partially covering the bottom portion 12 C. That is, the valve supports 43 A contact the fixed portions 40 A and force the fixed portions 40 A against parts of the bottom portion 12 C.
  • ribs 44 connect the inner wall 43 and the outer wall 42 .
  • the ribs 44 are opposed to the bottom portion 12 C. Further, the ribs 44 connect the valve supports 43 A of the inner wall 43 with portions of the outer wall 42 located between the two partition supports 42 A of each pair.
  • the longitudinal direction of the ribs 44 conforms to the radial direction of the compressor.
  • the height of the ribs 44 in the direction of axis L is lower than the height of the inner wall 43 and the outer wall 42 in the direction of axis L.
  • the cylinder block 12 and the rear housing 14 are coupled to each other with the discharge valve 40 and the gasket 41 arranged in between.
  • Through holes extend through the discharge valve 40 and the gasket 41 to communicate the cylinder block discharge chambers 45 , which are formed in the cylinder block 12 , with the rear discharge chambers 38 , which are formed in the rear housing 14 .
  • through holes extend through the discharge valve 40 and the gasket 41 to communicate the cylinder block suction chambers 36 , which are formed in the cylinder block 12 , with the rear suction chambers 57 , which are formed in the rear housing 14 .
  • the coupling of the cylinder block 12 and the rear housing 14 with the discharge valve 40 and the gasket 41 arranged in between forms the rear suction chambers 57 and 37 , which are in communication with the cylinder block suction chambers 36 and isolated from the exterior, and the rear discharge chambers 38 , which are in communication with the cylinder block discharge chambers 45 and isolated from the exterior.
  • a suction passage 46 extends through the cylinder blocks 11 and 12 .
  • the suction passage 46 has a front opening that is in communication with one of the three cylinder block suction chambers 27 and a rear opening that is in communication with one of the three cylinder block suction chambers 36 .
  • the front cylinder block 11 includes an inlet 47 .
  • the inlet 47 has one end, which opens in the outer surface of the cylinder block 11 , and another end, which opens in the wall surface of the suction passage 46 .
  • a pipe connects the inlet 47 to an external refrigerant circuit.
  • a discharge passage 48 extends through the cylinder blocks 11 and 12 .
  • the discharge passage 48 has a front opening that is in communication with one of the three cylinder block discharge chambers 29 and a rear opening that is in communication with one of the three cylinder block discharge chambers 45 .
  • the front cylinder block 11 includes an outlet (not shown).
  • the outlet has one end, which opens in the outer surface of the cylinder block 11 , and another end, which opens in the wall surface of the discharge passage 48 .
  • a pipe connects the outlet to the external refrigerant circuit.
  • the discharge passage 48 is separated from the suction passage 46 in the circumferential direction of the cylinder block.
  • the cylinder block 11 includes suction chamber communication passages 50 that communicate the cylinder block suction chambers 27 and the shaft hole 11 A. Further, the cylinder block 11 includes bore communication passages 51 that communicate the shaft hole 11 A and the front cylinder bores 21 .
  • the suction chamber communication passages 50 and the bore communication passages 51 are alternately arranged in the circumferential direction around the shaft hole 11 A.
  • a front portion of the rotation shaft 15 includes an intake groove 52 formed in the circumferential surface.
  • the intake groove 52 opens toward the sealed surface of the shaft hole 11 A and is separately communicable with the suction chamber communication passages 50 and the bore communication passages 51 .
  • the rotation of the rotation shaft 15 moves the intake groove 52 and mechanically switches the suction chamber communication passages 50 and the bore communication passages 51 that are in communication with the intake groove 52 .
  • the portion of the rotation shaft 15 enclosed by the sealed surface functions as a front rotary valve formed integrally with the rotation shaft 15 .
  • the cylinder block 12 includes rear intake passages 53 that communicate the rear cylinder bores 22 and the shaft hole 12 A.
  • a rear portion of the rotation shaft 15 includes a supply groove 54 formed in the circumferential surface.
  • the supply groove 54 has one end that opens toward the suction chamber 37 in the rear housing 14 and another end that is communicable with the rear intake passages 53 .
  • the rotation of the rotation shaft 15 moves the supply groove 54 and mechanically switches the rear intake passages 53 that are in communication with the supply groove 54 .
  • the portion of the rotation shaft 15 enclosed by the sealed surface functions as a rear rotary valve formed integrally with the rotation shaft 15 .
  • the front housing 13 includes the outer wall 33 and the inner wall 34 that define the front discharge chambers 28 and the front suction chambers 55 .
  • the partition 11 B of the cylinder block 11 applies force through at least one of the discharge valve 31 and the gasket 32 to the end surface of the outer wall 33 and the end surface of the inner wall 34 .
  • the partition supports 33 A extend from the outer wall 33 and are in contact with parts of the bottom portion 11 C. In the present embodiment, the partition supports 33 A are in contact with parts of the bottom portion 11 C through the gasket 32 . Thus, the area in which the front housing 13 contacts the bottom portion 11 C is increased in comparison with the prior art. This suppresses deformation of the bottom portion 11 C during compression. Further, the partition supports 33 A are arranged in pair on opposite sides of the distal ends of the valve portions 31 B. This prevents interference between the discharge valve 31 and the partition supports 33 A, while maintaining a predetermined length in the radial direction for the discharge valve 31 (length from the fixed portions 31 A to the valve portions 31 B).
  • valve supports 34 A which are portions of the inner wall 34
  • the valve supports 34 A are portions of the inner wall 34
  • the bottom portion 11 C with the valve supports 34 A partially covering the bottom portion 11 C.
  • the valve supports 34 A function to hold the fixed portions 31 A of the discharge valve 31 and function to suppress deformation of the bottom portion 11 C.
  • the ribs 35 connect the inner wall 34 and the outer wall 33 and are opposed to the bottom portion 11 C. This improves the strength of the inner wall 34 and the outer wall 33 , improves the rigidity of the entire front housing 13 , and further suppresses deformation of the bottom portion 11 C during compression. Further, the height T2 of the ribs 35 in the direction of the axis L is set to be lower than the height T1 of the inner wall 34 and the outer wall 33 in the direction of the axis L. Thus, the ribs 35 do not interfere with the discharge valve 31 and the gasket 32 , and the moving characteristics of the discharge valve 31 are unaffected.
  • the formation of the partition supports 33 A and the valve supports 34 A decreases the volume of the front discharge chambers 28 . However, in contrast with when entirely increasing the thickness of the outer wall 33 or the inner wall 34 , sufficient volume is ensured for the front discharge chambers 28 . This obviates the generation of noise when refrigerant is discharged.
  • the refrigerant discharged to the front discharge chambers 28 flows through the cylinder block discharge chambers 29 and enters the external refrigerant circuit via the discharge passage 48 and the outlet.
  • the rear housing 14 includes the outer wall 42 and the inner wall 43 that define the rear discharge chambers 38 and the rear suction chambers 57 .
  • the partition 12 B of the cylinder block 12 applies force through at least one of the discharge valve 40 and the gasket 41 to the end surface of the outer wall 42 and the end surface of the inner wall 43 .
  • the partition supports 42 A extend from the outer wall 42 , the inner wall 43 includes the valve supports 43 A, and the ribs 44 connect the inner wall 43 and the outer wall 42 .
  • This structure is the same as the front side and obtains the same advantages as the front side.
  • the outer wall 33 , the inner wall 34 , the partition supports 33 A, the valve supports 34 A, the ribs 35 , the front suction chambers 55 , and the front discharge chambers 28 at the front side correspond to the outer wall 42 , the inner wall 43 , the partition supports 42 A, the valve supports 43 A, the ribs 44 , the rear suction chambers 57 , and the rear discharge chambers 38 at the rear side.
  • the refrigerant discharged to the rear discharge chambers 38 flows through the cylinder block discharge chambers 45 and enters the external refrigerant circuit via the discharge passage 48 and the outlet.
  • the compressor 10 of the first embodiment has the advantages described below.
  • the partition supports 33 A extend from the outer wall 33 of the front housing 13 , and the partition supports 33 A contact parts of the bottom portion 11 C. This increases the area in which the front housing 13 contacts the bottom portion 11 C and allows for deformation of the bottom portion 11 C to be suppressed during compression. Further, the partition supports 33 A are arranged in pairs so that the partition supports 33 A of each pair are arranged on opposite sides of the distal end of the corresponding valve portion 31 B. This prevents interference between the discharge valve 31 and the partition supports 33 A, maintains the length of the discharge valve 31 (length from fixed portion 31 A to valve portion 31 B) at a predetermined length, and allows for deterioration of the moving characteristics of the discharge valve 31 to be obviated.
  • valve supports 34 A are formed by portions of the inner wall 34 in the front housing 13 , and the fixed portions 31 A are held between the valve supports 34 A and the bottom portion 11 C with the valve supports 34 A partially covering parts of the bottom portion 11 C. This increases the area in which the front housing 13 contacts the bottom portion 11 C and allows for deformation of the bottom portion 11 C to be further suppressed during compression. Further, the valve supports 34 A function to hold the fixed portions 31 A of the discharge valve 31 and function to suppress deformation of the bottom portion 11 C. This simplifies the structure.
  • the ribs 35 connect the inner wall 34 and the outer wall 33 in the front housing 13 , and the ribs 35 are opposed to the bottom portion 11 C. This improves the rigidity of the inner wall 34 and the outer wall 33 , and allows for deformation of the bottom portion 11 C to be further suppressed during compression. Further, the height T2 of the ribs 35 in the direction of the axis L is set to be lower than the height T1 of the inner wall 34 and the outer wall 33 in the direction of the axis L. Thus, the ribs 35 , the discharge valve 31 , and the gasket 32 do not interfere with one another, and the moving characteristics of the discharge valve 31 are unaffected.
  • the partition supports 42 A extend from the outer wall 42 of the rear housing 14 , and the partition supports 42 A contact parts of the bottom portion 12 C. As a result, the area in which the rear housing 14 contacts the bottom portion 12 C is increased, and deformation of the bottom portion 12 C is suppressed during compression. Further, the partition supports 42 A are arranged in pairs so that the partition supports 42 A of each pair are arranged on opposite sides of the distal end of the corresponding valve portion 40 B. This prevents interference between the discharge valve 40 and the partition supports 42 A, maintains the length of the discharge valve 40 (length from fixed portion 40 A to valve portion 40 B) at a predetermined length, and allows for deterioration of the moving characteristics of the discharge valve 40 to be obviated.
  • the inner wall 43 of the rear housing 14 includes the valve supports 43 A, and the fixed portions 40 A are held between the valve supports 43 A and the bottom portion 12 C with the valve supports 43 A partially covering parts of the bottom portion 12 C. This increases the area in which the rear housing 14 contacts the bottom portion 12 C and allows for deformation of the bottom portion 12 C to be further suppressed during compression. Further, the valve supports 43 A function to hold the fixed portions 40 A of the discharge valve 40 and function to suppress deformation of the bottom portion 12 C. This simplifies the structure.
  • the ribs 44 connect the inner wall 43 and the outer wall 42 in the rear housing 14 , and the ribs 44 are opposed to the bottom portion 12 C.
  • the ribs 44 improve the rigidity of the inner wall 43 and the outer wall 42 , and allows for deformation of the bottom portion 12 C to be further suppressed during compression.
  • the height of the ribs 44 in the direction of the axis L is set to be lower than the height of the inner wall 43 and the outer wall 42 in the direction of the axis L.
  • FIGS. 10 and 11 A second embodiment of a compressor will now be described with reference to FIGS. 10 and 11 .
  • the shape of the rear housing 14 is changed from the first embodiment.
  • the structure of the second embodiment is the same as the first embodiment.
  • Like or same reference numerals are given to those components that are the same as the corresponding components of the first embodiment. Such components will not be described in detail.
  • a rear housing 61 includes cylindrical projections 62 , which are arranged on opposite sides of each rib 44 connecting the outer wall 42 and the inner wall 43 .
  • the projections 62 are arranged at positions opposing the bottom portion 12 C, and the ribs 44 are arranged where interference is avoided with the partition supports 42 A and the valve supports 43 A.
  • the height of each projection 62 in the direction of the axis L is the same as the height of the inner wall 43 and the outer wall 42 in the direction of the axis L.
  • Each projection 62 is arranged to contact part of the bottom portion 12 C. Further, the projections 62 are arranged where interference is avoided with the discharge valve 40 and the gasket 41 . In FIG. 10 , the projections 62 are arranged at six locations.
  • the projections 62 further increase the area in which the rear housing 61 contacts the bottom portion 12 C. This further suppresses deformation of the bottom portion 12 C during compression. Further, the projections 62 are arranged so that there is no interference with the discharge valve 40 . Thus, the moving characteristics of the discharge valve 40 are unaffected.
  • the present embodiment also obtains advantages (1) to (8) of the first embodiment.
  • a third embodiment of a compressor will now be described with reference to FIGS. 12 to 14 .
  • the shapes of the front housing 13 and the rear housing 14 are changed from the first embodiment.
  • the structure of the second embodiment is the same as the first embodiment.
  • Like or same reference numerals are given to those components that are the same as the corresponding components of the first embodiment. Such components will not be described in detail.
  • two ribs 72 connect each pair of partition supports 33 A of the outer wall 33 to the corresponding valve support 34 A of the inner wall 34 .
  • the ribs 72 oppose the bottom portion 11 C.
  • Each partition support 33 A is located toward the corresponding valve support 34 A as viewed from a bolt hole 75 .
  • the bolt hole 75 is located along the extension of one of the ribs 72 .
  • Each pair of ribs 72 extends from the corresponding pair of partition supports 33 A and is connected to the corresponding valve support 34 A. The ends of the two ribs 72 in each pair are located near each other in the proximity of the corresponding valve support 34 A. Further, as shown in FIG.
  • the height T2 of the ribs 72 in the direction of the axis L is set to be lower than the height T1 of the inner wall 34 and the outer wall 33 in the direction of the axis L.
  • FIG. 12 shows three pairs of ribs 72 or a total of six ribs 72 .
  • two ribs 74 connect each pair of partition supports 42 A of the outer wall 42 to the corresponding valve support 43 A of the inner wall 43 .
  • the ribs 74 oppose the bottom portion 12 C.
  • Each partition support 42 A is located toward the corresponding valve support 43 A as viewed from a bolt hole 76 .
  • the bolt hole 76 is located along the extension of one of the ribs 74 .
  • Each pair of ribs 74 extends from the corresponding pair of partition supports 42 A and is connected to the corresponding valve support 43 A. The ends of the two ribs 74 in each pair are located near each other in the proximity of the corresponding valve support 43 A.
  • the height of the ribs 74 in the direction of the axis L is set to be lower than the height of the inner wall 43 and the outer wall 42 in the direction of the axis L.
  • the ribs 74 do not contact the discharge valve 40 and the gasket 41 .
  • FIG. 14 shows three pairs of ribs 72 or a total of six ribs 72 .
  • each pair of the partition supports 33 A is connected to the corresponding valve support 34 A by a pair of the ribs 72 .
  • This improves the rigidity of the partition supports 33 A and the valve supports 34 A, and allows for deformation of the bottom portion 11 C to be further suppressed during compression.
  • the bolt holes 75 are located along the extensions of the ribs 72 . This allows for further improvement in the rigidity of the valve supports 34 A.
  • the height T2 of the ribs 72 in the direction of the axis L is set to be lower than the height T1 of the inner wall 34 and the outer wall 33 in the direction of the axis L.
  • each pair of the partition supports 42 A is connected to the corresponding valve support 43 A by a pair of the ribs 74 .
  • This improves the rigidity of the partition supports 42 A and the valve supports 43 A, and allows for deformation of the bottom portion 12 C to be further suppressed during compression.
  • the bolt holes 76 are located along the extensions of the ribs 74 . This allows for further improvement in the rigidity of the valve supports 43 A.
  • the height of the ribs 74 in the direction of the axis L is set to be lower than the height of the inner wall 43 and the outer wall 42 in the direction of the axis L.
  • the ribs 74 , the discharge valve 40 , and the gasket 41 do not interfere with one another, and the moving characteristics of the discharge valve 40 are unaffected.
  • the present embodiment also obtains advantages (1), (2), (4) to (6), and (8) of the first embodiment.
  • the front housing and the rear housing basically have the same structure in which the partition supports extend from the outer wall, and the valve supports are formed by portions of the inner wall.
  • the front and rear housings do not have to have the same structure.
  • the above structure may be provided for at least only the rear housing.
  • the present invention is applied to a double-headed piston swash plate compressor.
  • the present invention may be applied to a single-headed piston variable displacement swash plate compressor.
  • discharge and suction mechanisms may be formed by a discharge port and suction port, which are arranged in the partition of the cylinder block, and a reed discharge valve and reed suction valve.
  • the present invention is applied to a compressor having three cylinders on one side and a total of six cylinders on the two sides.
  • the present invention may be applied to a compressor having five cylinders on one side and a total of ten cylinders on the two sides.
  • the gasket 32 (gasket 41 ) is held between the cylinder block 11 (cylinder block 12 ) and the front housing (rear housing). Instead, as long as the hermetic seal may be ensured, the gasket 32 (gasket 41 ) may be omitted. In this manner, a gasket is irrelevant to the advantages of the present invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
US14/031,543 2012-09-27 2013-09-19 Compressor Abandoned US20140086760A1 (en)

Applications Claiming Priority (4)

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JP2012-215190 2012-09-27
JP2012215190 2012-09-27
JP2013-110570 2013-05-27
JP2013110570A JP2014080965A (ja) 2012-09-27 2013-05-27 圧縮機

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BR (1) BR102013024665A2 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160208787A1 (en) * 2015-01-21 2016-07-21 Kabushiki Kaisha Toyota Jidoshokki Double- headed piston type swash plate compressor
US10859061B2 (en) * 2017-03-09 2020-12-08 Mahle International Gmbh Axial piston machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101926923B1 (ko) * 2016-11-02 2018-12-07 현대자동차주식회사 차량용 에어컨 컴프레서

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4886424A (en) * 1987-03-11 1989-12-12 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Multi-piston swash plate type compressor with damping arrangement for discharge reed valves
US5533870A (en) * 1992-11-13 1996-07-09 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Piston type compressor
US5607287A (en) * 1994-12-16 1997-03-04 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Reciprocating piston type compressor with an improved discharge valve mechanism
US5702236A (en) * 1994-02-23 1997-12-30 Kabushiki Kaisha Toyoda Jiboshokki Seisakusho Reciprocating piston type compressor having a discharge chamber with a plurality of pulsation attenuating subchambers

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH036873Y2 (zh) * 1986-01-17 1991-02-20
JPH08121330A (ja) * 1994-10-27 1996-05-14 Toyota Autom Loom Works Ltd 往復動型圧縮機
JPH08200218A (ja) * 1995-01-31 1996-08-06 Toyota Autom Loom Works Ltd 往復動型圧縮機
JPH109136A (ja) * 1996-06-24 1998-01-13 Toyota Autom Loom Works Ltd 圧縮機
JP4810701B2 (ja) * 2001-07-24 2011-11-09 株式会社ヴァレオジャパン 往復式冷媒圧縮機
JP4003673B2 (ja) * 2003-03-13 2007-11-07 株式会社豊田自動織機 ピストン式圧縮機
KR101104281B1 (ko) * 2005-09-02 2012-01-12 한라공조주식회사 압축기
CN101769375B (zh) * 2008-12-29 2014-10-01 上海三电贝洱汽车空调有限公司 缸盖垫
KR20110003827A (ko) * 2009-07-06 2011-01-13 한라공조주식회사 압축기

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4886424A (en) * 1987-03-11 1989-12-12 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Multi-piston swash plate type compressor with damping arrangement for discharge reed valves
US5533870A (en) * 1992-11-13 1996-07-09 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Piston type compressor
US5702236A (en) * 1994-02-23 1997-12-30 Kabushiki Kaisha Toyoda Jiboshokki Seisakusho Reciprocating piston type compressor having a discharge chamber with a plurality of pulsation attenuating subchambers
US5607287A (en) * 1994-12-16 1997-03-04 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Reciprocating piston type compressor with an improved discharge valve mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160208787A1 (en) * 2015-01-21 2016-07-21 Kabushiki Kaisha Toyota Jidoshokki Double- headed piston type swash plate compressor
US10859061B2 (en) * 2017-03-09 2020-12-08 Mahle International Gmbh Axial piston machine

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CN103696929A (zh) 2014-04-02
JP2014080965A (ja) 2014-05-08
KR101475729B1 (ko) 2014-12-23
KR20140041354A (ko) 2014-04-04
BR102013024665A2 (pt) 2016-04-26

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