WO2013042527A1 - 圧縮機 - Google Patents
圧縮機 Download PDFInfo
- Publication number
- WO2013042527A1 WO2013042527A1 PCT/JP2012/072337 JP2012072337W WO2013042527A1 WO 2013042527 A1 WO2013042527 A1 WO 2013042527A1 JP 2012072337 W JP2012072337 W JP 2012072337W WO 2013042527 A1 WO2013042527 A1 WO 2013042527A1
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- WIPO (PCT)
- Prior art keywords
- rotor
- cradle
- rotor chamber
- chamber
- compressor
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/40—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and having a hinged member
- F04C18/44—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and having a hinged member with vanes hinged to the inner member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/08—Rotary pistons
- F01C21/0809—Construction of vanes or vane holders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/40—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and having a hinged member
- F04C18/46—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and having a hinged member with vanes hinged to the outer member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
Definitions
- the present invention relates to a compressor.
- swash plate type compressors vane type compressors, and scroll type compressors are known as positive displacement compressors that change the volume of a compression chamber by the rotation of a drive shaft.
- the piston reciprocates with a stroke corresponding to the inclination angle of the swash plate.
- Patent Document 1 In the vane type compressor, the vane slides in contact with the inner peripheral surface of the housing while appearing in and out of the rotor.
- Patent Document 2 In a scroll compressor, the movable scroll is only revolving with respect to the fixed scroll. For example, see Patent Document 3.
- the compression chamber sucks fluid from the suction port when the volume increases, and discharges fluid from the discharge port when the volume decreases.
- These positive displacement compressors can be used, for example, in a vehicle air conditioner.
- Patent Documents 4 and 5 disclose vane type compressors having a radially outer compression chamber and a radially inner compression chamber. In this vane type compressor, since the radially inner compression chamber can be formed in the rotor, it is possible to increase the exhaust amount per total volume.
- An object of the present invention is to provide a novel positive displacement compressor that solves various problems of conventional positive displacement compressors.
- a drive shaft that can rotate around an axis, and a rotor chamber that rotatably supports the drive shaft and has an annular shape parallel to the axis.
- a cradle window that penetrates in the radial direction, and is provided in the rotor chamber while being in sliding contact with the housing on a circumferential surface extending in a direction parallel to the shaft core, and is rotatable with the drive shaft.
- An annular rotor and two oscillating ends provided in the cradle window so as to be swingable about a pivot axis parallel to the axis and extending along a direction parallel to the axis as the rotor rotates.
- a cradle in sliding contact with the housing wherein the rotor chamber includes an outer working chamber located radially outside the rotor and an inner working chamber located radially inside the rotor, the outer working chamber and the At least in the inner working chamber And the cradle form a compression chamber in which volume change occurs while maintaining airtightness by rotation of the rotor, and the housing has a suction port and a discharge port communicating with the compression chamber. .
- the rotor when the drive shaft supported by the housing rotates around the axis, the rotor also rotates together with the drive shaft in the rotor chamber.
- the cradle swings around the pivot extending in parallel with the axis within the cradle window of the rotor while rotating in synchronization with the rotor.
- the rotor chamber is composed of an outer working chamber and an inner working chamber, and a compression chamber is formed by at least one of the outer working chamber and the inner working chamber and the cradle.
- the cradle is in sliding contact with the housing at both oscillating ends extending along a direction parallel to the axis as the rotor rotates.
- This compressor can be used, for example, in a vehicle air conditioner.
- this compressor is less susceptible to vibration because the volume of the compression chamber is changed by the rotation of the rotor, and does not require a large number of parts.
- the rotor is annular, and an inner working chamber is formed on the inner peripheral side of the rotor. Therefore, the displacement is larger than that of a general vane compressor.
- the cradle is more resistant to load due to friction than the vane because of its shape, and is not easily destroyed.
- this compressor does not require the processing of a spiral groove unlike the scroll type compressor. Further, this compressor does not require parts having a complicated shape. Therefore, even when the axial length is increased to increase the displacement, the displacement can be increased simply by changing the thickness of the housing, rotor, and cradle. Easy to realize weight, Therefore, the compressor of the present invention can solve various problems of the conventional positive displacement compressor as a new positive displacement compressor.
- FIG. 4 is a cross-sectional view in the axial direction showing the compressor according to the first embodiment of the present invention, and is a cross-sectional view taken along the line II in FIG. 3.
- the compressor of 1st Embodiment is shown, it is sectional drawing of an axial direction, and sectional drawing along the II-II line of FIG. It is sectional drawing of the radial direction which shows the compressor of 1st Embodiment. It is sectional drawing of the radial direction which shows the compressor of 1st Embodiment. It is sectional drawing of the radial direction which shows the compressor of 1st Embodiment. It is sectional drawing of the radial direction which shows the compressor of 1st Embodiment. It is sectional drawing of the radial direction which shows the compressor of 1st Embodiment.
- FIGS. 1-10 are explanatory drawings which show the change of the compression chamber of the compressor of 1st Embodiment. It is sectional drawing which shows the rotor of the compressor of 1st Embodiment, and the cradle which shows three pieces. It is a top view which shows the cradle of the compressor of 1st Embodiment. It is sectional drawing which shows the cradle of the compressor of 2nd Embodiment. It is sectional drawing which shows the cradle of the compressor of 3rd Embodiment.
- FIGS. 1 and 2 In the compressor of the first embodiment, as shown in FIGS. 1 and 2, the front housing 1 and the shell 3 are joined to each other via an O-ring 2a.
- An outer block 5, an inner block 7, a front plate 9, and a rear plate 11 are fixed inside the front housing 1 and the shell 3.
- These front housing 1, shell 3, outer block 5, inner block 7, front plate 9 and rear plate 11 constitute a housing. 1 and 2, the left side of the figure is defined as the front, and the right side of the figure is defined as the rear.
- a shaft hole 1 a extending along the axis O is formed in the front housing 1 so as to penetrate the front housing 1.
- a shaft hole 9 a coaxial with the shaft hole 1 a is formed in the front plate 9 so as to penetrate the front plate 9.
- the rear plate 11 is formed with a bearing recess 11a coaxial with the shaft holes 1a and 9a.
- a shaft sealing device 13 is provided in the shaft hole 1a, a bearing device 15 is provided in the shaft hole 9a, and a bearing device 17 is provided in the bearing recess 11a.
- the drive shaft 19 is supported by the shaft seal device 13 and the bearing devices 15 and 17 so as to be rotatable around the axis O.
- the front plate 9 is fixed in the front housing 1 via an O-ring 2b.
- the rear plate 11 is fixed in the shell 3 via an O-ring 2c.
- the outer block 5 is sandwiched between the front plate 9 and the rear plate 11 in the shell 3.
- the outer block 5 and the inner block 7 are each formed in an annular shape.
- An inner block 7 is provided in the outer block 5.
- the inner block 7 is fixed to the rear plate 11 by a plurality of bolts 21.
- a rotor driving recess 9c is formed in the central region of the front plate 9, and a hub 27b of a connecting member 27 described later is housed in the rotor driving recess 9c. Therefore, the outer block 5, the inner block 7, the rear plate 11, and the hub 27b form a rotor chamber 23 that forms an annular shape parallel to the axis O.
- the rotor chamber 23 includes a rotor chamber facing surface 23a parallel to the shaft core O, a rotor chamber facing surface 23b parallel to the shaft core O, a rotor chamber front end surface 23c orthogonal to the shaft core O, and a shaft core O. And a rotor chamber rear end surface 23d.
- the rotor inner surface 23 a is formed by the inner peripheral surface of the outer block 5.
- the rotor inner surface 23a is designed based on the locus of the outer abutment surface 33b when a simulation of rotating the rotor 26 is performed based on the axis O and a pivot P of a cradle 33 described later.
- the rotor chamber outward surface 23 b is formed by the outer peripheral surface of the inner block 7.
- the rotor chamber outward surface 23 b is designed based on the locus of the inner contact surface 33 c when the rotor 26 is rotated based on the axis O and the pivot P of the cradle 33.
- the rotor chamber front end surface 23c is formed by the rear surface of the outer peripheral region of the front plate 9 and the rear surface of the hub 27b.
- the rotor chamber rear end face 23 d is formed by the front face of the rear plate 11.
- a shaft hole 7a extending along the shaft core O is formed coaxially with the shaft holes 1a and 9a and the bearing recess 11a.
- a drive shaft 19 is inserted into the shaft hole 7a.
- a ring 27 a of a connecting member 27 is fixed to the drive shaft 19 by a key 25.
- the connecting member 27 includes a ring 27a formed in a cylindrical shape parallel to the axis O, and a hub 27b made of an annular plate extending from the ring 27a in the radially outward direction perpendicular to the axis O at the front end of the ring 27a.
- a plain bearing 31 is provided between the ring 27 a and the shaft hole 7 a of the inner block 7.
- the rotor 26 is located outside the ring 27a of the connecting member 27 and is concentric with the ring 27a.
- the rotor 26 is formed in a cylindrical shape parallel to the axis O.
- a hub 27b of the connecting member 27 is fixed to the front end surface of the rotor 26 by a plurality of bolts 26a.
- the rear surface of the hub 27 b forms a rotor chamber front end surface 23 c that is flush with the front surface of the outer block 5 and the front surface of the inner block 7.
- An annular slider 60 that is concentric and has the same diameter as the rotor 26 is fixed to the rear end surface of the rotor 26 by a plurality of bolts 26b.
- the slider 60 is formed of a material having the same material as that of the plain bearing 31.
- the rotor 26 is located in the rotor chamber 23. As shown in FIGS. 3 to 6, the rotor 26 is inscribed with the rotor outer circumferential surface 28a extending from the rotor chamber front end surface 23c to the rotor chamber rear end surface 23d and inscribed with the rotor chamber inner facing surface 23a. However, it has a rotor inner peripheral surface 28b extending from the rotor chamber front end surface 23c to the rotor chamber rear end surface 23d. For this reason, the rotor chamber 23 includes an outer working chamber 231 located outside the rotor 26 and an inner working chamber 232 located inside the rotor 26.
- the rotor driving recess 9c of the front plate 9 is provided with a thrust bearing 32 for receiving the front surface of the hub 27b.
- a guide groove 11 b is formed on the front surface of the rear plate 11 along the rotor 26.
- a slider 60 is slidably accommodated in the guide groove 11b.
- each cradle window 29 extends in parallel with the axis O from the rotor chamber front end surface 23 c to the rotor chamber rear end surface 23 d.
- the first end 29a in the circumferential direction of each cradle window 29 is formed as a part of a cylindrical surface centering on a pivot P described later.
- the second end 29 b in the circumferential direction of each cradle window 29 is also formed as a part of a cylindrical surface with the pivot P as the center.
- each cradle 33 has a substantially triangular prism shape and is an integrated product extending from the rotor chamber front end surface 23 c to the rotor chamber rear end surface 23 d.
- Pins 33g and 33h are provided at both ends of each cradle 33 in the axial direction so as to protrude.
- a central axis of the pins 33g and 33h is a pivot P parallel to the axis O.
- the front side pin 33 g is supported by the hub 27 b, and the rear side pin 33 h is supported by the slider 60. For this reason, each cradle 33 can swing around the pivot P in each cradle window 29.
- each cradle 33 has a hollow portion 33f extending from the rotor chamber front end surface 23c to the rotor chamber rear end surface 23d.
- Each cradle 33 includes an outer abutment surface 33b formed so as to form a part of the cylinder outside the part away from the pins 33g and 33h, and a part of the cylinder inside the part away from the pins 33g and 33h. And an inner abutting surface 33c formed so as to be formed.
- the outer contact surface 33b is in contact with the rotor chamber facing surface 23a.
- the inner contact surface 33c circumscribes the rotor chamber outward surface 23b.
- the outer contact surface 33b and the inner contact surface 33c are connected by a first sealing surface 33d.
- the first sealing surface 33 d is formed in a curved surface forming a part of a cylinder aligned with the first end 29 a of the cradle window 29. Further, the outer contact surface 33b and the inner contact surface 33c are connected by a second sealing surface 33e. Of the second sealing surface 33e, portions around the pins 33g and 33h are formed as curved surfaces forming a part of a cylinder aligned with the second end 29b of the cradle window 29. As shown in FIGS. 1 and 2, the outer contact surface 33b, the inner contact surface 33c, the first sealing surface 33d, and the second sealing surface 33e extend from the rotor chamber front end surface 23c to the rotor chamber rear end surface 23d. ing.
- each cradle 33 partitions the rotor chamber 23 together with the rotor 26 into a plurality of working chambers while maintaining airtightness.
- three compression chambers 351 are formed by the outer working chamber 231 and the cradle 33, and the inner working chamber 232 and the cradle 33 are formed.
- three compression chambers 352 are formed.
- the compression chambers 351 and 352 undergo volume changes due to the rotation of the rotor 26.
- the outer block 5 is formed with two suction ports 5a extending in parallel with the axis O.
- two concave portions are formed on the outer peripheral surface of the outer block, and each concave portion forms a discharge port 5 b with the shell 3.
- Each suction port 5a communicates with a compression chamber 351 whose volume is increasing.
- Each discharge port 5b communicates with a compression chamber 351 whose volume is being reduced.
- the inner block 7 is formed with two suction ports 7b and two discharge ports 7c extending in parallel with the axis O.
- Each suction port 7b communicates with a compression chamber 352 whose volume is increasing.
- Each discharge port 7c communicates with a compression chamber 352 whose volume is being reduced.
- a suction chamber 37 is formed between the front housing 1 and the front plate 9.
- suction passages 9 b and 9 d communicating with the suction chamber 37 are formed so as to pass therethrough.
- the suction passage 9b communicates the suction chamber 37 and both the suction ports 5a.
- the hub 27b is formed with a suction passage 27c through which the suction passage 9d and the suction ports 7b communicate with each other.
- the suction chamber 37 is opened to the outside by a suction passage 1 b formed in the front housing 1.
- a discharge chamber 39 is formed between the shell 3 and the rear plate 11.
- discharge passages 11 c and 11 d are formed so as to penetrate both the discharge ports 5 b and both discharge chambers 7 c to the discharge chamber 39.
- the discharge chamber 39 is opened to the outside by a discharge passage 3 b formed in the shell 3.
- this compressor When the compressor configured as described above is used in a vehicle air conditioner, this compressor constitutes a refrigeration circuit together with a condenser, an expansion valve, and an evaporator.
- the suction passage 1b is connected to the evaporator, and the discharge passage 3b is connected to the condenser.
- the drive shaft 19 is driven by the vehicle engine or motor.
- each cradle 33 swings about the pivot P in the corresponding cradle window 29 while rotating in synchronization with the rotor 26. Due to the rotation of the drive shaft 19, the rotor 26 and each cradle 33 behave as shown in FIGS.
- a plurality of pairs of cradle windows 29 and cradle 33 are provided, a plurality of compression chambers 351 are formed in the outer working chamber 231 and a plurality of compression chambers 352 are formed in the inner working chamber 232. Is done.
- Each cradle 33 is in sliding contact with the outer block 5 and the inner block 7 at both oscillating ends extending along the direction parallel to the axis O as the rotor 26 rotates, so that the airtightness of the compression chambers 351 and 352 is maintained. Is done.
- the compression chamber 351 formed by the outer working chamber 231 is maintained in a highly airtight state. For this reason, the compression chambers 351 and 352 undergo volume changes due to the rotation of the rotor 26.
- the rotor 26 rotates so that the first sealing surface 33d of each cradle 33 is in front. Therefore, most of the compression reaction force of the compression chambers 351 and 352 is supported by the rotor 26 via the first sealing surface 33d, and the behavior of the cradle 33 is stabilized.
- the compression chamber 351 sucks refrigerant gas from the suction port 5a when the volume increases, and the compression chamber 352 sucks refrigerant gas from the suction port 7b when the volume increases.
- the compression chamber 351 discharges refrigerant gas from the discharge port 5b when the volume is reduced, and the compression chamber 352 discharges refrigerant gas from the discharge port 7c when the volume is reduced.
- the vehicle compartment is air-conditioned.
- FIG. 7A the compression chambers 351 and 352 of FIG. 3 are shown in FIG. 7A
- the compression chambers 351 and 352 of FIG. 4 are shown in FIG. 7B
- the compression chambers 351 and 352 of FIG. FIG. 7C shows the compression chambers 351 and 352 shown in FIG. 6.
- FIG. 7A if attention is paid to the compression chamber C1 among the compression chambers 351 constituted by the outer working chamber 231, the compression chamber C1 increases its volume in FIG. Enlarge and inhale refrigerant at this time. Then, the compression chamber C1 finishes the suction of the refrigerant in FIG. 7C, and starts to decrease in volume as the compression chamber C1 in FIG. 7D, and discharges the refrigerant.
- each cradle 33 since this compressor causes volume changes in the compression chambers 351 and 352 due to the rotational operation of the rotor 26, it is difficult to generate vibrations and does not require a large number of parts. Further, in this compressor, even if a frictional force is applied to the cradle 33, the shape is not easily broken or deformed. In particular, in this compressor, since the first sealing surface 33d of each cradle 33 is formed by a part of a cylindrical surface centered on the pivot P, the pivot P is suitable for the high pressure in the compression chambers 351 and 352. When received, each cradle 33 is preferably easily swung. In addition, each cradle 33 has a hollow portion 33f and is light in weight, so that it easily swings suitably.
- this compressor exhibits an excellent effect in terms of power loss. Moreover, in this compressor, the occupation ratio of the rotor 26 is small. Since the compression chamber 352 can be formed not only in the compression chamber 351 on the radially outer side of the rotor 26 but also on the inner side in the radial direction, an excellent effect is exhibited in terms of the exhaust amount per volume of the entire compressor.
- this compressor it is not necessary to process a spiral groove like a scroll compressor.
- this compressor there is no low-strength part due to its complicated shape such as a scroll, and when the axial length is increased to increase the displacement, the housing, rotor 26 and each cradle 33 It is possible to increase the displacement by simply changing the wall thickness. Therefore, it is easy to reduce the size and weight of the compressor.
- suction ports 5a and 7b and discharge ports 5b and 7c are formed in the outer block 5 and the inner block 7, so that the overall weight can be reduced.
- this compressor can solve various problems of the conventional positive displacement compressor as a new positive displacement compressor.
- the compressor according to the second embodiment of the present invention employs a cradle 43 shown in FIG.
- Each cradle 43 includes an integral cradle body 44 having a substantially triangular prism shape, an outer seal pin 45 provided on the cradle body 44, and an inner seal pin 46 provided on the cradle body 44.
- each cradle 43 can swing around the pivot P in the corresponding cradle window 29.
- Each cradle 43 has a hollow portion 43 f extending in a direction parallel to the axis O.
- Each outer seal pin 45 is made of a material different from the material of the outer block 5 that defines the rotor chamber facing surface 23a, for example, a resin.
- Each outer seal pin 45 is formed in a cylindrical shape extending from the rotor chamber front end surface 23c to the rotor chamber rear end surface 23d.
- Each outer seal pin 45 is covered with a cradle body 44 at a portion slightly exceeding half of the outer peripheral surface. The outer peripheral surface exposed from the cradle body 44 forms the outer contact surface 45a. For this reason, each outer seal pin 45 is rotatable about the outer rotation axis Q1 parallel to the axis O and the pivot P on the cradle body 44. There is no limitation on the rotation range of each outer seal pin 45.
- Each inner seal pin 46 is made of a material different from the material of the inner block 7 that defines the rotor chamber outward face 23b, for example, a resin.
- Each inner seal pin 46 is formed in a column shape extending from the rotor chamber front end surface 23c to the rotor chamber rear end surface 23d, and a lip 46a projecting radially outward is formed on a part of the peripheral surface. Further, the inner seal pin 46 is formed with a concave portion 46c that is recessed radially inward at a part of its peripheral surface.
- Each inner seal pin 46 is covered with a cradle body 44 while exposing the lip 46a and slightly exceeding half of the outer peripheral surface, and the outer surface of the lip 46a is formed as an inner contact surface 46b.
- each inner seal pin 46 can be rotated around the inner rotation axis Q2 parallel to the axis O and the pivot P on the cradle main body 44.
- the rotation range of each inner seal pin 46 is limited to the range of the circumferential length of the recess 46c.
- Other configurations of the second embodiment are the same as those of the first embodiment.
- each cradle 43 includes a cradle main body 44, an outer seal pin 45, and an inner seal pin 46. Therefore, the outer seal pin 45 and the inner seal pin 46 are separate from the cradle body 44, and the outer seal pin 45 and the inner seal pin 46 having the optimum diameter can be combined with respect to dimensional variations during the manufacture of the cradle 43 and the housing. .
- the outer contact surface 45a of the outer seal pin 45 is preferably inscribed in the rotor chamber facing surface 23a, and the inner contact surface 46b of the inner seal pin 46 is preferably in contact with the rotor chamber outward surface 23b.
- each outer seal pin 45 rotates about the outer rotation axis Q1 with respect to the cradle body 44, and therefore, the outer contact surface 45a of the outer seal pin 45 preferably rotates on the rotor inner surface 23a. Move. Further, since each cradle 43 presses the outer contact surface 45a against the rotor chamber inner surface 23a by centrifugal force based on the rotation of the rotor 26, the outer contact surface 45a and the rotor chamber inner surface 23a are suitably sealed.
- the inner contact surface 45b of the inner seal pin 46 preferably rolls on the rotor chamber outward surface 23b. Further, a lip 46a is formed on the inner seal pin 46, and the lip 46a is curved outward by the pressure difference between the front and rear compression chambers 351 and 352 in the rotation direction of the rotor 26. Touch.
- each outer seal pin 45 is formed of a material different from that of the outer block 5
- seizure between the outer contact surface 45a and the rotor inner surface 23a can be prevented.
- each inner seal pin 46 is formed of a material different from that of the inner block 7, seizure between the inner contact surface 46b and the rotor chamber outward surface 23b can be prevented. For this reason, this compressor can exhibit high durability.
- Each cradle 53 includes an integrally formed cradle body 54 having a substantially triangular prism shape, an outer seal pin 55 provided on the cradle body 54, and an inner seal pin 56 provided on the cradle body 54.
- each cradle 53 has a hollow portion 53f extending in a direction parallel to the axis O.
- Each outer seal pin 55 is formed of a material different from the material of the outer block 5 that partitions the rotor inner surface 23a, for example, a resin.
- the configuration of each outer seal pin 55 is the same as that of the second embodiment.
- Each inner seal pin 56 is formed of a material different from the material of the inner block 7 that defines the rotor chamber outward face 23b, for example, a resin.
- Each inner seal pin 56 is covered with a cradle main body 54 at a portion slightly exceeding half of the outer peripheral surface, and an outer peripheral surface exposed from the cradle main body 54 is formed as an inner contact surface 56b. For this reason, each inner seal pin 56 is rotatable about the inner rotation axis Q2 parallel to the axis O and the pivot P on the cradle body 54. There is no limit to the rotation range of each inner seal pin 56.
- a spring chamber 54a is formed in the cradle body 54, and a coil spring 57 as an urging member for urging the outer seal pin 55 and the inner seal pin 56 away from each other is housed in the spring chamber 54a.
- Other configurations of the second embodiment are the same as those of the first embodiment.
- the same operational effects as those of the second embodiment can be obtained.
- the outer contact surface 55a of the outer seal pin 55 is preferably the rotor inner surface 23a.
- the inner contact surface 56b of the inner seal pin 56 is preferably in contact with the rotor chamber outward surface 23b.
- the present invention has been described according to the first to third embodiments.
- the present invention is not limited to the first to third embodiments, and may be appropriately selected without departing from the scope of the present invention. Needless to say, it can be changed and applied.
- the present invention can electronically control the discharge amount per time by adopting an electric motor as a drive source.
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
したがって、本発明の圧縮機は、新規な容積形圧縮機として、従来の容積形圧縮機の種々の問題を解決することができる。
第1の実施形態の圧縮機では、図1及び図2に示すように、フロントハウジング1とシェル3とがこれらの間にOリング2aを介して互いに接合されている。フロントハウジング1及びシェル3の内部にはアウターブロック5、インナーブロック7、フロントプレート9及びリヤプレート11が固定されている。これらフロントハウジング1、シェル3、アウターブロック5、インナーブロック7、フロントプレート9及びリヤプレート11がハウジングを構成している。なお、図1及び図2において、図の左側を前方とし、図の右側を後方と定義する。
本発明の第2の実施形態に係る圧縮機は、図10に示すクレイドル43を採用している。各クレイドル43は、略三角柱形状をした一体品のクレイドル本体44と、クレイドル本体44に設けられた外側シールピン45と、クレイドル本体44に設けられた内側シールピン46とからなる。
第3の実施形態の圧縮機は図11に示すクレイドル53を採用している。各クレイドル53は、略三角柱形状をした一体品のクレイドル本体54と、クレイドル本体54に設けられた外側シールピン55と、クレイドル本体54に設けられた内側シールピン56とからなる。
Claims (17)
- 圧縮機であって、
軸芯回りに回転可能な駆動軸と、
該駆動軸を回転可能に支持するとともに、該軸芯と平行な環状をなすロータ室を内部に形成するハウジングと、
径方向に貫通するクレイドル窓を有するとともに、該軸芯と平行な方向に沿って延びる周面で該ハウジングと摺接しつつ該ロータ室内に設けられ該駆動軸と共に回転可能な環状のロータと、
該軸芯と平行な枢軸回りに揺動可能に該クレイドル窓内に設けられ、該ロータの回転に伴って該軸芯と平行な方向に沿って延びる両揺動端で該ハウジングと摺接するクレイドルとを備え、
前記ロータ室は、
前記ロータの径方向外側に位置する外側作動室と、
該ロータの径方向内側に位置する内側作動室とを含み、
該外側作動室及び該内側作動室の少なくとも一方と前記クレイドルとは、該ロータの回転によって気密を維持しつつ容積変化を生じる圧縮室を形成し、前記ハウジングは、該圧縮室と連通する吸入口及び吐出口を有する、圧縮機。 - 前記ロータ室は、
前記軸芯と平行な環状のロータ室内向面と、
該ロータ室内向面に囲まれ、かつ該軸芯と平行な環状のロータ室外向面と、
該軸芯と直交するロータ室前端面と、
該軸芯と直交するロータ室後端面とによって区画され、
前記ロータは、
該ロータ室内向面と内接しつつ該ロータ室前端面から該ロータ室後端面まで延びるロータ外周面と、
該ロータ室外向面と内接しつつ該ロータ室前端面から該ロータ室後端面まで延びるロータ内周面とを有し、
前記クレイドルは、
該ロータ室前端面から該ロータ室後端面までに亘って該ロータ室内向面と内接する外側当接面と、
該ロータ室前端面から該ロータ室後端面までに亘って該ロータ室外向面と外接する内側当接面と、
該外側当接面と該内側当接面とを接続し、前記クレイドル窓の周方向の第1端を封止する第1封止面と、
該外側当接面と該内側当接面とを接続し、前記クレイドル窓の周方向の第2端を封止する第2封止面とを有している、請求項1記載の圧縮機。 - 前記第1封止面及び前記第2封止面の一方と前記枢軸との距離は、該第1封止面及び該第2封止面の他方と該枢軸との距離より長く設定されている、請求項2記載の圧縮機。
- 前記第1封止面又は前記第2封止面であって前記枢軸から遠い方は、該枢軸を中心とした円筒面の一部として形成されている、請求項3項記載の圧縮機。
- 前記第1封止面又は前記第2封止面であって前記枢軸に近い方は、該枢軸を中心とした円筒面の一部として形成されている請求項3又は4項記載の圧縮機。
- 前記ハウジングは、
前記ロータ室内向面を形成するアウターブロックと、
該アウターブロック内に設けられ、前記ロータ室外向面を形成するインナーブロックと、
該アウターブロック及び該インナーブロックに固定され、前記ロータ室前端面を形成するフロントプレートと、
該アウターブロック及び該インナーブロックに固定され、前記ロータ室後端面を形成するリヤプレートとを備えている、請求項2乃至5のいずれか1項記載の圧縮機。 - 前記ハウジングは、
前記アウターブロック、前記インナーブロック、前記フロントプレート及び前記リヤプレートを収容するシェルと、
該シェルに固定され、前記駆動軸を回転可能に支持するフロントハウジングとを備えている、請求項6記載の圧縮機。 - 前記ロータと前記駆動軸とは前記軸芯と直交するハブによって連結され、該ハブは前記ロータ室前端面又は前記ロータ室後端面の一部を形成している、請求項2乃至7のいずれか1項記載の圧縮機。
- 前記クレイドルは、
前記クレイドル窓内に揺動可能に設けられたクレイドル本体と、
該クレイドル本体に設けられ、前記外側当接面を有する外側シールピンと、
該クレイドル本体に設けられ、前記内側当接面を有する内側シールピンとを含む、請求項2乃至8のいずれか1項記載の圧縮機。 - 前記外側シールピンは前記クレイドル本体に前記軸芯及び前記枢軸と平行な外側回動軸回りに回動可能に設けられている、請求項9記載の圧縮機。
- 前記内側シールピンは前記クレイドル本体に前記軸芯及び前記枢軸と平行な内側回動軸回りに回動可能に設けられている、請求項9又は10項記載の圧縮機。
- 前記外側当接面は前記ロータ室内向面を区画する材料とは異なる材料によって形成されている、請求項2乃至11のいずれか1項記載の圧縮機。
- 前記内側当接面は前記ロータ室外向面を区画する材料とは異なる材料によって形成されている、請求項2乃至12のいずれか1項記載の圧縮機。
- 前記外側シールピン及び前記内側シールピンの少なくとも一方には、前記ロータの回転方向における前後の差圧によって押され、前記ロータ室内向面又は前記ロータ室外向面に当接するリップが形成されている請求項9乃至11のいずれか1項記載の圧縮機。
- 前記クレイドルは中空である、請求項1乃至14のいずれか1項記載の圧縮機。
- 前記クレイドルは、前記外側シールピンと前記内側シールピンとを互いに離れる方向に付勢する付勢部材を含む、請求項9乃至11のいずれか1項記載の圧縮機。
- 一対以上のクレイドル窓及びクレイドルを更に備える、請求項1乃至16のいずれか1項記載の圧縮機。
Priority Applications (6)
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BR112014006255A BR112014006255A2 (pt) | 2011-09-21 | 2012-09-03 | compressor |
CN201280045412.6A CN103814220B (zh) | 2011-09-21 | 2012-09-03 | 压缩机 |
KR1020147004484A KR101581692B1 (ko) | 2011-09-21 | 2012-09-03 | 압축기 |
US14/344,228 US9631621B2 (en) | 2011-09-21 | 2012-09-03 | Compressor |
EP12833548.6A EP2759709B1 (en) | 2011-09-21 | 2012-09-03 | Compressor |
IN2012CHN2014 IN2014CN02012A (ja) | 2011-09-21 | 2014-03-14 |
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JP2011-206044 | 2011-09-21 | ||
JP2011206044A JP5724785B2 (ja) | 2011-09-21 | 2011-09-21 | 圧縮機 |
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WO2013042527A1 true WO2013042527A1 (ja) | 2013-03-28 |
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PCT/JP2012/072337 WO2013042527A1 (ja) | 2011-09-21 | 2012-09-03 | 圧縮機 |
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US (1) | US9631621B2 (ja) |
EP (1) | EP2759709B1 (ja) |
JP (1) | JP5724785B2 (ja) |
KR (1) | KR101581692B1 (ja) |
CN (1) | CN103814220B (ja) |
BR (1) | BR112014006255A2 (ja) |
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CN103867440A (zh) * | 2014-03-28 | 2014-06-18 | 袁政 | 压缩机 |
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CN105658962B (zh) * | 2013-07-24 | 2018-01-16 | 张翼 | 定轨转子泵及定轨转子泵组合增压内燃发动机 |
WO2016160856A2 (en) | 2015-03-30 | 2016-10-06 | Hicor Technologies, Inc. | Compressor with liquid injection cooling |
CN109268260A (zh) * | 2018-11-13 | 2019-01-25 | 白明 | 一种旋转动力泵 |
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Also Published As
Publication number | Publication date |
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KR20140038562A (ko) | 2014-03-28 |
EP2759709A4 (en) | 2015-01-28 |
BR112014006255A2 (pt) | 2017-04-11 |
EP2759709A1 (en) | 2014-07-30 |
US20140369880A1 (en) | 2014-12-18 |
KR101581692B1 (ko) | 2015-12-31 |
JP5724785B2 (ja) | 2015-05-27 |
EP2759709B1 (en) | 2015-11-18 |
IN2014CN02012A (ja) | 2015-05-29 |
CN103814220A (zh) | 2014-05-21 |
CN103814220B (zh) | 2016-01-20 |
US9631621B2 (en) | 2017-04-25 |
JP2013068122A (ja) | 2013-04-18 |
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