WO1996019667A1 - Vane type compressor - Google Patents
Vane type compressor Download PDFInfo
- Publication number
- WO1996019667A1 WO1996019667A1 PCT/JP1995/002515 JP9502515W WO9619667A1 WO 1996019667 A1 WO1996019667 A1 WO 1996019667A1 JP 9502515 W JP9502515 W JP 9502515W WO 9619667 A1 WO9619667 A1 WO 9619667A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- movable plate
- cam ring
- vane
- pressure
- front side
- 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.)
- Ceased
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Classifications
-
- 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
- F04C27/005—Axial sealings for working fluid
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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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 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 groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
-
- 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
- F04C18/34—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 relative reciprocation between the co-operating members
- F04C18/344—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 relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F04C18/3446—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 relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface
-
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0021—Systems for the equilibration of forces acting on the pump
Definitions
- the present invention relates to a vane-type compressor, and more particularly to a vane-type compressor capable of protecting internal mechanisms during liquid compression and improving abrasion resistance of a resilient member when starting an electromagnetic clutch.
- FIG. 22 is a longitudinal sectional view showing a conventional vane type compressor.
- the vane-type compressor includes a cam ring 501, a front side block 503 fixed to both end faces of the cam ring 501, and a rear side block. 504, a mouth rotatably housed in a cam ring 501, and a front fixed to the end faces of both side blocks 503, 504, respectively.
- a head 505 and a lid 506 are provided, and a driving shaft 507 for the rotor 502 is provided.
- the drive shaft 507 is rotatably supported by bearings 508 and 509 provided on both side blocks 503 and 504, respectively.
- An example of this type of vane type compressor is described in Japanese Patent Application Laid-Open No. 3-18683.
- the vane-type compressor described above had the following various problems. First, the use of aluminum-based materials for all of the major components of the compressor increases material costs and necessitates surface treatment. Therefore, there was a problem that the cost was high.
- the front side block 503 and the rear side block 504 had to be thickened in order to maintain resistance to liquid compression, resulting in an increase in weight.
- the front side end faces of the front side block 503 and the rear side block 504 may be deformed in a wavy manner. In some cases, wear and seizure may occur between the rotor 502 and the front side block 503 and between the rotor 502 and the rear side block 504. .
- a vane compressor having a discharge hole and a discharge valve in the rear block to directly discharge high-pressure refrigerant from the compression chamber into the discharge chamber (for example, a conventional open-type compressor).
- the pressure in the compression chamber may become abnormally high because the discharge hole of the releasable block cannot be made too large. It is necessary to provide a safety valve, but there is a problem that the structure becomes complicated.
- the present invention has been made in view of such circumstances, and its object is to protect the internal mechanism during liquid compression without increasing the amount of aluminum-based material used, and to turn on the electromagnetic clutch. And prevent abrasion and seizure of the front and rear side members or the rear side members. It is necessary to prevent abnormal high pressure in the compression chamber without complicating the structure. Disclosure of the invention
- a vane type compressor includes a rotor fixed to a drive shaft and rotatably housed in a cam ring, and a plurality of vanes provided on the rotor.
- a vane slidably inserted into the groove; a front side member provided on the front side of the cam ring; and a vane provided on the rear side of the cam ring.
- a vane-type compressor comprising: a front side member; and a high pressure chamber formed inside one of the front side member and the front side member.
- At least one of the head members is fixed to one end surface of the cam ring, and the head is held by the head in a state of facing the one end surface of the cam ring; and Movable play that can move along the axis centerline It is composed of a.
- the movable plate When the compressor starts, the movable plate is temporarily pushed to the non-rotor side by the pressure of the compression chamber partitioned by the vane, and the movable plate moves to the non-rotor side.
- a gap is formed between the end face and the end face of the rotor, and the liquid fluid is discharged through the gap to avoid liquid compression.
- the vane type compressor according to the present invention is characterized in that the movable plate And a high-pressure chamber formed between the compression chamber and the compression chamber.
- the movable plate is pressed against one end of the cam ring by the pressure of the high-pressure chamber, and a stable compression operation is performed during the operation of the compressor.
- At least one of the front side member and the rear side member is the rear side member.
- the movable plate is provided with a discharge hole that directly connects the compression chamber and the high-pressure chamber, and a discharge valve that opens and closes the discharge hole.
- the movable plate is provided with a discharge port that directly connects the compression chamber and the high-pressure chamber, and a discharge valve that opens and closes this discharge hole.
- the discharge valve opens.
- the refrigerant in the compression chamber is directly discharged from the discharge hole to the high-pressure chamber, and when the pressure in the compression chamber further increases, the movable plate moves toward the opposite side of the rotor.
- a gap is formed between the end face and the high-pressure refrigerant in the compression chamber escapes through the gap. Therefore, even if the relief valve is not provided, it is possible to prevent an abnormally high pressure in the compression chamber, thereby contributing to a reduction in the thickness of the cam ring and a reduction in weight. it can.
- the rotor is provided with a discharge promoting groove for communicating the discharge hole with the compression chamber immediately before the vane retracts most into the vane groove.
- the rotor is provided with a discharge-promoting groove that connects the discharge hole to the compression chamber just before the vane retracts into the vane groove most.
- the refrigerant in the room is directly discharged to the high-pressure chamber, and is discharged from the compression chamber to the high-pressure chamber through the discharge promoting groove, so that a sufficient discharge amount can be obtained, and the pressure in the compression chamber becomes abnormally high. Can be prevented more reliably.
- the vane compressor according to the present invention is provided with an elastic member for urging the movable plate toward the rotor.
- the movable plate is pressed against one end face of the cam ring by the biasing force of the elastic member because the elastic member that urges the movable plate toward the rotor is provided. During the operation of the compressor, a stable compression operation is performed. .
- the vane type compressor includes a rotor fixed to a drive shaft and rotatably housed in a cam ring, and a vane slidably inserted into a plurality of vane grooves provided in the rotor.
- a front side member disposed on the front side of the cam ring, a front side member disposed on the front side of the cam ring, and the front side member And a low-pressure chamber formed inside one of the rear side members.
- the front side member is fixed to a front end surface of the cam ring. And is moved along the center line of the drive shaft while being held by the front head in a state where the front head faces the front end face of the cam ring.
- a first movable plate wherein the movable member is A rear head fixed to the rear end surface of the cam ring; and a rear head held by the rear head in a state of facing the rear end surface of the cam ring.
- a second movable plate movable along the center line of the shaft.
- Both the front side member and the rear side member are respectively held by the head fixed to the end face of the cam ring and the head in a state facing the end face of the cam ring, And a movable plate that can move along the center line of the drive shaft, so that the mounting bolt is tightened.
- the front head is fixed to one end of the cam ring and the rear head is fixed to the other end, the first and second movable plates that come into contact with the end of the rotor
- the surface pressure between the end face of the rotor and the end face of the movable plate near the mouth does not increase, and wear and seizure between the rotor and both side members can be suppressed.
- a compression chamber formed between the vanes and the low-pressure chamber are partitioned by one of the first and second movable plates, and the one movable plate is provided.
- a back pressure chamber into which a high pressure is introduced is disposed on the opposite side of the cam ring to surround the low pressure chamber.
- One movable plate separates a compression chamber and a low-pressure chamber formed between the vanes, and a back-pressure chamber for introducing high pressure is provided around the low-pressure chamber on the anti-cam ring side of the movable plate.
- the vane-type compressor according to the present invention is characterized in that a low-pressure introduction groove is provided on an inner peripheral edge of the cam ring on a high-pressure chamber side end surface of the cam ring, in a movable plate contact area where the movable plate contacts. It is characterized by being provided along.
- a low-pressure introducing groove is provided on an inner peripheral edge of the cam ring on a cam ring-side end surface of the movable plate that is in contact with the cam ring. It is characterized by being provided along.
- a high pressure is applied to the end face of the movable plate on the high pressure chamber side, and a low pressure is applied to the low pressure introduction groove in the cam ring contact area on the cam ring side end face of the movable plate, resulting in a pressure difference.
- the pressing force on the cam ring side acting on the outer peripheral edge of the compressor the amount of deformation of the movable plate is suppressed, and the leakage of the refrigerant in the compression chamber can be suppressed to prevent performance degradation.
- the vane type compressor according to the present invention is characterized in that the low-pressure introducing groove communicates with the compression chamber in a suction stroke.
- the pressing force to the cam ring side acts on the outer peripheral edge of the movable plate, the amount of deformation of the movable plate is suppressed, and the leakage of the refrigerant in the compression chamber can be suppressed, thereby preventing performance deterioration.
- the movable plate can be prevented from fluttering and noise can be prevented.
- the vane-type compressor according to the present invention is characterized in that the low-pressure introduction groove communicates with a low-pressure chamber in which a low-pressure working fluid sent into the compression chamber is stored.
- FIG. 1 is a vertical view showing a vane type compressor according to a first embodiment of the present invention. It is sectional drawing.
- FIG. 2 is a cross-sectional view taken along the line II-II of FIG.
- FIG. 3 is an end view taken along the arrow A of FIG.
- FIG. 4 is an end view taken along the arrow B in FIG.
- FIG. 5 is a sectional view taken along the line C-C in FIG.
- FIG. 6 is a longitudinal sectional view showing a vane compressor according to a second embodiment of the present invention.
- FIG. 7 is a longitudinal sectional view showing a vane type compressor according to a third embodiment of the present invention.
- FIG. 8 is a longitudinal sectional view of a vane type compressor according to a fourth embodiment of the present invention.
- FIG. 9 is a sectional view taken along the line IX— of FIG.
- FIG. 10 is a sectional view taken along the line DD of FIG.
- FIG. 11 is a perspective view of a rotor of the vane compressor of FIG.
- FIG. 12 is a longitudinal sectional view showing a vane compressor according to a fifth embodiment of the present invention.
- FIG. 13 is a longitudinal sectional view of a vane compressor according to a sixth embodiment of the present invention.
- FIG. 14 is a rear end view of the cam ring.
- Figure 15 is an end view of the front head on the cam ring side.
- FIG. 16 is a conceptual diagram for explaining the relationship between the cam ring and the movable plate.
- FIG. 17 is a conceptual diagram for explaining the relationship between the cam ring and the movable plate.
- FIG. 18 is a longitudinal sectional view of a vane type compressor according to a seventh embodiment of the present invention.
- FIG. 19 is a longitudinal sectional view of a vane compressor according to an eighth embodiment of the present invention.
- FIG. 20 is a diagram showing an end face of the cylinder head on the cam ring side, and showing a state where a movable plate is mounted.
- FIG. 21 is a view showing an end face of the cylinder head on the cam ring side, and showing a state in which a movable plate is removed.
- FIG. 22 is a longitudinal sectional view showing a conventional vane type compressor. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a longitudinal sectional view showing a vane type compressor according to a first embodiment of the present invention
- FIG. 2 is a sectional view taken along the line I 1 -I 1 of FIG. 1
- FIG. FIG. 4 is an end view taken along arrow A of FIG. 4
- FIG. 4 is an end view taken along arrow B of FIG. 1
- FIG. 5 is a cross-sectional view taken along line C-C of FIG.
- This vane-type compressor includes a cam ring 1, a front side member 25 and a rear side member 20 respectively disposed on both end faces of the cam ring 1, and a cam ring 1. It has a rotor 2 rotatably housed and a drive shaft 7 for the rotor 2. The drive shaft 7 is rotatably supported by bearings 8 and 9. An electromagnetic clutch (not shown) is attached to one end of the drive shaft 7.
- the front side member 25 has a front side block 3 fixed to the front end face of the cam ring 1 and a front side block 3 fixed to the end face of the front side block 3. And head 5.
- the front head 5 is formed with a refrigerant gas (working fluid) discharge port 5a, and the discharge port 5a is connected to the front head 5 and the front side block 3. It communicates with the discharge chamber 10 formed.
- the rear side member 20 includes a rear head 6 fixed to the rear end surface of the cam ring 1 and a substantially disk-shaped movable plate 4 opposed to the rear end surface of the cam ring 1. Have been.
- a suction port 6 a for the refrigerant gas is formed in the lid 6, and the suction port 6 a communicates with a suction chamber 11 formed in the lid 6.
- the rear end of the drive shaft 7 is loosely inserted into the center hole of the movable plate 4, and the movable plate 4 is inserted into a concave portion 6b provided on the end face of the rear head 6 at the mouth.
- the drive shaft 7 is accommodated so as to be movable along the center line thereof.
- O-rings 21 and 22 are interposed between the movable plate 4 and the recess 6 b of the lid head 6, and the O-rings (elastic members) 21 and 22 are biased by the urging force.
- the movable plate 4 is urged to the rear end surface of the cam ring 1.
- a back pressure chamber 23 is formed by the two O-rings 21 and 22.
- the back pressure chamber 23 is connected to the back pressure chamber 23 through a high pressure introduction passage 24 (broken line in FIG. 1).
- a high-pressure refrigerant gas (or high-pressure oil) is introduced from a discharge chamber (high-pressure chamber) 10 described later.
- the high-pressure refrigerant introduced into the back pressure chamber 23 urges the movable plate 4 to the rear end surface of the power ring 1.
- the movable plate 4 has two upper and lower suction ports 12 a and 1 corresponding to two upper and lower compression spaces 12 (see FIG. 2) described later. 2a is provided.
- the suction chamber 11 and the compression space 12 communicate with each other through the suction ports 12a and 12a.
- two upper and lower compression spaces 12 are defined between the inner peripheral surface of the cam ring 1 and the outer peripheral surface of the roaster 2 (in FIG. 1, one compression space is defined). Only the compressed space is visible in 1).
- the rotor 2 is provided with a plurality of vane grooves 13, and a vane 14 is slidably inserted into these vane grooves 13.
- the compression space 12 is partitioned by the vanes 14 to form a plurality of compression chambers, and the volume of each compression chamber depends on the rotation of the rotor 2. Change.
- a discharge valve cover 17 having a valve stopper 17 a is fixed to an outer peripheral wall of the cam ring 1 by a bolt 18.
- a discharge valve 19 for opening and closing the discharge port 16 is interposed between the outer peripheral wall of the cam ring 1 and the valve stopper 17a.
- the rotor 2 rotates.
- the refrigerant gas flowing out of the outlet from the evaporator (not shown) enters the suction chamber 11 through the suction port 6a, and is sucked into the compression space 12 from the suction chamber 11 through the suction port 12a.
- the compression space 12 is partitioned by vanes 14 and the volume of each compression chamber changes with the rotation of the rotor 2.
- the refrigerant gas trapped between the vanes 14 is compressed.
- the compressed refrigerant gas opens the discharge valve 19, flows into the discharge chamber 10 from the discharge port 16, and is further discharged from the discharge port 5a.
- the pressure in the discharge chamber 10 when the compressor is started is lower than during operation, the gap between the movable plate 4 and the rotor 2 is relatively large, and the high-pressure refrigerant vanes in a short time at startup. Since the vane 14 is supplied to the inner part of the groove 13, the vane 14 easily jumps out.After the start, the pressure of the discharge chamber 10 increases, and the movable plate 4 is pressed against the end face of the cam ring 1 on the rear side. In this manner, the movable plate 4 improves the starting characteristics and eliminates the need for a trigger valve.
- This trigger valve is an on-off valve used in a conventional vane type compressor, and when the pressure in the discharge chamber does not reach a predetermined value, a passage for communicating the discharge chamber with the inner part of the vane groove is provided. When the pressure of the discharge chamber is increased and reaches a predetermined value, the passage is closed to assist the vane to fly out during startup.
- an aluminum-based releasable block is used instead.
- the use of a thin iron-based movable plate 4 that does not require any surface treatment reduces the amount of aluminum-based material used as a whole, thereby reducing costs and increasing rigidity.
- the thickness can be reduced or the size can be reduced while maintaining it.
- the movable plate 4 is provided with a suction port 12a. It is possible to easily respond to changes in suction characteristics simply by replacing the movable plate 4. ⁇ That is, the cam ring side and the side block Compared to the case where the suction port 12a is installed on the side, there is no need to change the mold, and the design can be changed simply by replacing the cutout shape of the suction port 12a with the movable plate 4 that is different. Can be.
- the present invention can also be applied to the case where the discharge chamber 10 is on the liya side.
- movable plates can be used on both the front side and the rear side.
- an X-ring (not shown) may be used instead of the 0-rings 21 and 22.
- FIG. 6 is a longitudinal sectional view of a vane compressor according to a second embodiment of the present invention.
- the front side member 25 is fixed to the front side end face of the cam ring 1 and the front side block 3 is fixed to the front side end face of the cam ring 1.
- the front head 5 is fixed to the front end face of the cam ring 1 and the rear head member 5 is fixed to the front end face of the cam ring 1.
- the movable plate 4 is held by the lid 6 in a state where it faces the rear end face of the cam ring 1 and the cam ring 1, and is movable along the center line of the drive shaft 7.
- this second embodiment As shown in FIG.
- the rear side member 50 is fixed to the rear side end face of the cam ring 1 and the rear side block 34 is fixed to the rear side end face of the cam ring 1.
- the front side member 55 is fixed to the front end surface of the cam ring 1 and the front head member 55 fixed to the front end surface of the cam ring 1.
- a disk-shaped movable plate 33 that is held by the front head 35 in a state facing the front end face of the ring 1 and that can move along the center line of the drive shaft 7 It consisted of:
- a drive shaft 7 is loosely inserted into a center hole of the movable plate 33, and the movable plate 33 is driven into a concave portion 35b provided on a rotor-side end surface of the front head 35.
- a 0-ring (elastic member) 26 is interposed between the movable plate 33 and the recess 35 b of the front head 35, which is accommodated so as to be movable along the center line of the shaft 7.
- the movable plate 33 is urged by the urging force of the 0 ring 26 to the front end face of the cam ring 1.
- the discharge chamber 40 and the compression space 12 are separated by a movable plate 33.
- the vane type compressor of the second embodiment when the compressor is started, when the rotor 2 is rotated while the refrigerant in the compression space 12 is liquid, the movable plate 3 is temporarily moved by the compression pressure. 3 is pushed to the anti-rotor side, and the movable plate 3 3 moves to the anti-rotation side against the urging force of the 0 ring 26, and as a result, the movable plate 3 3 A gap is formed between the front end face of the rotor 2 and the liquid refrigerant is discharged through the gap, so that liquid compression is avoided, and the internal mechanism is protected as in the first embodiment. Can be.
- the movable plate 33 Since the discharge chamber 40 and the compression space 12 are partitioned by the movable plate 33, the movable plate 33 is moved to the front side of the cam ring 1 by the pressure of the discharge chamber 40 during steady operation. Because it is pressed against the end face, stable compression is performed. Also, the high pressure introduction channel 24 (see Fig. 1) becomes unnecessary. Thus, the structure can be simplified as compared with the first embodiment.
- an iron-based thin movable plate 33 that does not require surface treatment was used, so that the aluminum-based movable plate was used as in the first embodiment.
- the amount of material used can be reduced as a whole, cost can be reduced, and thinning or downsizing can be achieved while maintaining high rigidity.
- FIG. 7 is a longitudinal sectional view of a vane compressor according to a third embodiment of the present invention. Portions common to the above-described embodiments are denoted by the same reference numerals, and description thereof is omitted. The discharge valve and the like are not shown.
- the front side member 85 is composed of only the front head 65 fixed to the front end surface of the cam ring 51, and the front side member 80 is the head 6 6 fixed to the end face of the cam 5, and the head 6 6 is opposed to the end face of the cam ring 5 1.
- a disk-shaped movable plate 64 movable along the center line of the drive shaft 7.
- the first embodiment differs from the first embodiment in that the discharge chamber 70 is located on the rear side, the suction chamber 71 is located on the front side, and there is no front side block. .
- a drive shaft 7 is loosely inserted into a center hole of the movable plate 64.
- the movable plate 64 is inserted into a concave portion 66 b provided on the rotor-side end surface of the lid head 66. It is housed movably along the centerline of 7.
- a 0-ring (elastic member) 27 is interposed between the movable plate 64 and the concave portion 66b of the front head 66, and the urging force of the 0-ring 27 The movable plate 64 is urged against the rear end surface of the cam ring 51.
- the discharge chamber 70 and the compression space 12 are partitioned by a movable plate 64.
- the vane type compressor of the third embodiment According to the vane type compressor of the third embodiment, the same effect can be obtained, and when the compressor is started (when the electromagnetic clutch is turned on), the end face of the rotor 2 on the side of the rotor and the end face of the movable plate 64 on the side of the rotor are separated.
- the sliding surface pressure can be reduced, wear can be suppressed, and seizure can be prevented.
- FIG. 8 is a longitudinal sectional view of a vane type compressor according to a fourth embodiment of the present invention
- FIG. 9 is a sectional view taken along line IX— in FIG. 8
- FIG. 10 is D— in FIG. Sectional view along the line D
- FIG. 11 is a perspective view of the vane compressor of FIG.
- This fourth embodiment is an application example of the third embodiment shown in FIG. 7, and similarly to the third embodiment, the front side member 85 is connected to the cam ring 61 by the flange. It is composed of only the front head 65 fixed to the front end face, and the rear side member 90 is fixed to the rear end face of the cam ring 61. And a disk-shaped movable plate ⁇ 4 which is held by a rear head 76 in a state of facing the rear end surface of the cam ring 61 and is movable along the center line of the drive shaft 7. It consisted of.
- a movable plate 74 that separates the discharge chamber 80 and the compression space 12 is movably housed in a recess 76 b on the rotor side end surface of the lid head 76, and the movable plate ⁇ 4 A 0-ring (elastic member) 27 is interposed between the recess 76 b of the head 76 and the movable plate 74 by the urging force of the 0-ring 27.
- the point that is biased to the rear end face of the ring 61 is also common to the third embodiment.
- the plate 74 is provided with a discharge hole 96 for directly communicating the compression chamber and the discharge chamber 80, and a discharge valve 99 for opening and closing the discharge hole 96.
- the negative end of the discharge valve 99 is fixed to the movable plate 74 with a screw 98 together with the valve holder 95.
- the rotor 2 is provided with a discharge promoting groove 97 (see FIG. 11) for communicating the discharge hole 96 with the compression chamber immediately before the vane 14 is pulled into the vane groove 13 most. .
- the discharge valve 99 opens, and the refrigerant in the compression chamber flows directly from the discharge hole 96 to the discharge chamber 80.
- the movable plate 74 moves to the opposite side of the mouth, and as a result, a gap is formed between the end surface of the movable plate 74 and the end surface of the rotor 2.
- the high-pressure refrigerant in the compression chamber escapes through the gap, so that it is possible to prevent an abnormally high pressure in the compression chamber even without a relief valve, and as a result, the thickness of the cam ring 61 is reduced.
- the rotor 2 is provided with the discharge promoting groove 97 for communicating the discharge hole 96 with the compression chamber just before the vane 14 is retracted into the vane groove 13 most, At the end of the discharge stroke, the refrigerant in the compression chamber is directly discharged to the discharge chamber 80, and is discharged from the compression chamber to the discharge chamber 80 via the discharge promoting groove 97 to obtain a sufficient discharge amount. be able to.
- the discharge hole 96 and the flat valve serving as the discharge valve 99 are arranged on the movable plate 74, the discharge hole 16 and the roll valve serving as the discharge valve 19 are connected to the camshaft.
- the structure is simplified and the assemblability is improved as compared with the first to third embodiments provided in the ring 1.
- FIG. 12 is a longitudinal sectional view of a vane type compressor according to a fifth embodiment of the present invention. Portions common to the above-described embodiments are denoted by the same reference numerals, and description thereof is omitted. The discharge valve and the like are not shown.
- the front side member 125 is fixed to the front side end face 81 a of the force ring 81.
- a movable plate which is held by the front head 75 in a state facing the front end surface of the cam ring 81 and is movable along the center line of the drive shaft 7.
- a movable plate (second movable plate) that is held by the rear head 86 in a state of facing the rear end surface of the cam ring 81 and is movable along the center line of the drive shaft 7 8 4 It is composed of
- the drive shaft 7 is loosely inserted into the center hole of the movable plate 43, and the movable plate 43 is formed in a concave portion 75 a provided on the cam ring side end surface of the front head 75.
- the movable plate 43 is urged to the front end surface of the cam ring 81 by the urging force of the 0 ring 28.
- a back pressure chamber 29 is formed by the bottom surface of the 0 ring 28, the concave portion 75 a, and the front end surface of the movable plate 43.
- the movable plate 43 separates the suction chamber 91 from the compression space 12.
- the movable plate 43 is provided with two suction ports 43 a corresponding to the two compression spaces 12 (only one compression space 12 is visible in the first 12). I have.
- the suction chamber 91 communicates with the compression space 12 via the suction port 43a.
- the movable plate 43 has a high-pressure inlet 43 b for guiding a high pressure from a high-pressure inlet 81 d described later to the back pressure chamber 29. Is provided.
- a discharge port 86 a for refrigerant gas is formed in the lid head 86, and the discharge port 86 a communicates with a discharge chamber 110 in the lid head 86.
- the rear end of the drive shaft 7 is loosely inserted into the center hole of the movable plate 84, and the movable plate 84 is provided with a zero ring 3 on the low end side end face of the boss of the rear head 86. You have been hit through 0. 0
- the movable plate 84 is urged by the biasing force of the ring 30 to the rear end surface 81b of the cam ring 81.
- the cam ring 81 is provided with two discharge spaces 48 corresponding to the two compression spaces 12 (FIG. 12 shows only one discharge space 48).
- Two discharge ports 16 are provided in the partition wall 8 1c that partitions the compression space 12 from the compression space 12 (only one discharge port 16 is visible in FIG. 12).
- the discharge space 48 communicates with the discharge chamber 110 and the discharge space 48 accommodates a discharge valve (not shown) for opening and closing the discharge port 16.
- the discharge space 48 communicates with the compression space 12.
- the cam ring 81 is provided with a high pressure introduction hole 81 d for guiding the high pressure of the discharge space 48 to the high pressure introduction hole 43 b of the movable plate 43.
- the high-pressure refrigerant gas in the compression chamber flows into the discharge space 48 through the discharge port 16 and is discharged from the discharge port 86a through the discharge chamber 110.
- Part of the high-pressure refrigerant gas that has flowed into the discharge space 48 is sent into the back pressure chamber 29 through the high pressure introduction holes 81 d and 43 b. Is urged to the front end surface 81 a of the cam ring 81.
- an assembling bolt (not shown) is tightened, and the front side end face 81 a of the cam ring 81 is attached to the front head.
- the head 75 is fixed to the rear end 86 on the other end surface 81b, none of the movable plates 43 and 84 in contact with the end surface of the rotor 2 is deformed, and the movable plate 43 and 84 are not deformed.
- the surface pressure between the movable plates 43 and 84 does not increase, and wear and seizure between the rotor 2 and both side members 100 and 125 can be prevented. it can.
- the back pressure chamber 29 is arranged on the opposite side of the cam ring of the movable plate 43 so as to surround the suction chamber 91, so that the high pressure of the back pressure chamber 29 causes the movable plate 43 to move.
- the center of the movable plate 43 is deformed so as to protrude toward the base 2 compared to the peripheral edge of the movable plate 43. Without this, abrasion and seizure between the rotor-side end face of the movable plate 43 and the rotor-side end face of the rotor 2 can be suppressed.
- the back pressure chamber 23 is formed by two 0-rings 21 and 22 interposed between the end surface of the movable plate 4 on the side opposite to the cam ring and the recess 6 b of the lid 6.
- the back pressure chamber 29 is formed by only one O-ring 28, the cost can be reduced. it can.
- FIG. 13 is a longitudinal sectional view of a vane type compressor according to a sixth embodiment of the present invention
- FIG. 14 is a rear end view of a cam ring. Portions common to the above-described embodiments are denoted by the same reference numerals, and description thereof is omitted.
- the rear end face 101 b of the cam ring 101 is formed by The movable plate contact area A where the movable plate 84 comes into contact (portion surrounded by the two-dot chain line indicating the movable plate 84 in FIG. 14) is used to prevent the movable plate 84 from deforming.
- the introduction groove 231-234 is strong and is provided along the inner peripheral edge of the cam ring 101.
- the low-pressure introduction groove 2 3 1 and the low-pressure introduction groove 2 3 3 3 3 3 3 3 3 3 3 the low-pressure introduction groove 2 32 and the low-pressure introduction groove 2 3 4 are respectively symmetrical in the circumferential direction. In position.
- the low-pressure introduction groove 2 31 and the low-pressure introduction groove 2 3 3 communicate with the compression chamber in the suction stroke, and the low-pressure refrigerant is introduced into the low-pressure introduction grooves 2 3 1 and 2 3 3.
- the low-pressure introduction grooves 2 3 2 and 2 3 4 communicate with the suction chamber 1 1 1 1 on the front side via passages 2 3 5 and 2 3 6 provided in the cam ring 10 1, respectively. are doing. None of the low-pressure introduction grooves 2 3 1 and 2 3 3 communicate with the compression chamber.
- the four low pressure introduction grooves 2 31 1 to 2 3 4 are respectively closed by the front end surfaces of the movable plate 84 as shown by the two-dot chain line in FIG. 14, and the low pressure introduction grooves 2 3 1 to 2 3 Four chambers are formed by 2 3 4 and movable plate 8 4.
- FIG. 16 and FIG. 17 are conceptual diagrams for explaining the relationship between the cam ring and the movable plate.
- the low pressure introduction groove 2 3 1 Are provided along the inner peripheral edge of the cam ring 101, so that high pressure is applied to the end face of the movable plate 84 on the high pressure chamber side, and that high pressure is applied to the end face of the movable ring 84 on the cam ring side. Since a low pressure is applied to the cam ring contact area to generate a pressure difference, a pressing force acts on the outer peripheral edge of the movable plate 84 as shown in FIG. 17 (b). As a result, the amount of deformation of the movable plate 84 is greatly reduced.
- the amount of deformation of the movable plate 84 is greatly reduced, it is possible to suppress the leakage of the refrigerant in the compression chamber and prevent performance degradation, and to make the movable plate 84 flutter. Noise can be reduced and noise can be prevented.
- the bearing housing chamber in which the high-pressure refrigerant in the discharge chamber 110 is accommodated in the rear head 86 and the chain receiver 9 that supports the rear end of the drive shaft 7 is accommodated.
- a high-pressure introduction passage 86 c for introduction into 150 is provided, and the high-pressure refrigerant in the bearing accommodating chamber 150 is provided at the center of the movable plate 84.
- a high-pressure passage 84 a is provided in the back of the groove 13.
- Figure 15 is an end view of the front head on the cam ring side.
- the front side member 135 is composed of only the front head 105.
- the cam ring side end face 105a of the front head 105 has a sliding surface 15 1 on which the front end face of the rotor 2 and the side surface of the vane 14 slide.
- a suction chamber 111 located around the sliding surface 151 and a 0-ring groove 105b located around the suction chamber 111 are provided respectively.
- the sliding surfaces 15 1 are provided with suction ports 15 2, 15 3 for sending the low-pressure refrigerant in the suction chamber 11 1 into the compression chamber in the suction stroke at symmetrical positions in the circumferential direction. .
- An annular suction chamber 1 1 1 is provided around the sliding surface 15 1 on the cam ring side end surface of the front head 105, and the suction port 1 5 2 is provided on the sliding surface 15 1 Since the front side member 105 is provided, the front side member 135 can be constituted by only the front head 105, and the front head 105 can be formed by a camcorder. The end face on the ring side can be directly fixed to the end face 101a on the front side of the cam ring 101.
- the low-pressure introduction grooves 231 to 234 are provided on the cam ring 101 side is described.
- the low-pressure introduction groove is movable. It may be provided on the cam ring side end surface of the plate 84 and in the cam ring contact area that comes into contact with the cam ring 101, and the same effect as in the above embodiment can be obtained. Can be.
- FIG. 18 is a longitudinal sectional view of a vane type compressor according to a seventh embodiment of the present invention. Portions common to the above-described embodiments are denoted by the same reference numerals, and description thereof is omitted.
- a small-diameter 0-ring 154 and a large-diameter 0-ring are provided between the movable plate 204 and the end surface 1886a at the mouth of the central portion of the rear head 1886.
- the ring 155 is interposed, and the movable plate 204 is attached to the rear end face 101b of the cam ring 101 by the urging force of the rings 154 and 155. Be activated.
- a low-pressure introduction chamber 156 is formed by the two 0-rings 154, 155, and the low-pressure introduction chamber 156 has a low-pressure introduction passage 204 provided in the movable plate 204. The low-pressure refrigerant is introduced from the compression chamber in the suction stroke through.
- FIG. 19 is a longitudinal sectional view of a vane type compressor according to an eighth embodiment of the present invention
- FIG. 20 is a cam ring side end face of a cylinder head, with a movable plate mounted thereon.
- Fig. 21 shows the cylinder head cam ring
- FIG. 4 is a diagram showing an end surface on the side of the motor and showing a state where a movable plate is removed. Portions common to the above-described embodiments are denoted by the same reference numerals, and description thereof is omitted.
- the front side member 4 25 is strong, the front head 3 0 5 fixed to the front side end face 101 a of the cam ring 101, A movable plate 3 that is held by the front head 300 in a state facing the front end surface 101 a of the ring 101 and that can move along the center line of the drive shaft 7. 4 3
- the movable plate 3 43 separates the suction chamber 3 11 from the compression space 12.
- the drive shaft 7 is loosely inserted into the center hole of the movable plate 34 3, and the movable plate 34 3 has a concave portion 3 provided on the cam ring side end face of the front head 304.
- 0 5a is accommodated within the large-diameter 0-ring 35 5 and the small-diameter 0-ring 35 5, and is movable by the urging force of the 0-rings 3 5 4 and 3 5 5.
- 3 is urged to the front end face of the cam ring 101.
- 0 rings 3 5 4 and 3 5 5 are 0 ring grooves provided in recesses 3 0 5 a 3 6
- a back pressure chamber 3 5 6 is formed between 5 5.
- a high-pressure refrigerant is introduced from the discharge space 48 into the back pressure chamber 356 through a high-pressure introduction passage 343b provided in the movable plate 343.
- the movable plate 4443 has two suction ports 3443a corresponding to the two compression spaces 12 (only one compression space 12 is visible in Fig. 19). (See Figure 20).
- the suction chamber 3 1 1 and the compression space 1 2 communicate with each other through the suction port 3 4 3 a.
- the cam ring 101 has two discharge spaces 48 corresponding to the two compression spaces 12 (only one discharge space 48 is visible in FIG. 19).
- the partition wall 101c separating the discharge space 48 and the compression space 12 is provided with two discharge ports 16 (FIG. 19 shows one discharge port). Only outgoing port 16 is visible).
- the discharge space 48 communicates with the discharge chamber 110, and a discharge valve (not shown) that opens and closes the discharge port 16 is housed in the discharge space 48. When the discharge port 16 is opened, the discharge space 48 communicates with the compression chamber.
- the cam ring 101 is provided with a high pressure introduction hole 101 d for guiding the high pressure of the discharge space 48 to the high pressure introduction hole 343 b of the movable plate 343.
- the high-pressure refrigerant gas in the compression chamber flows into the discharge space 48 through the discharge port 16 and is discharged from the discharge port 86a through the discharge chamber 110.
- Part of the high-pressure refrigerant gas that has flowed into the discharge space 48 is sent into the back pressure chamber 365 through the high-pressure inlets 10Id, 3443b.
- the peripheral edge of the movable plate 343 is urged against the front end face 101a of the power ring 101.
- an assembling bolt (not shown) is tightened, and a front head 30 is attached to the front end face 101 a of the cam ring 101.
- the heads 86 are fixed to the other end face 101b, respectively, the movable plates 3 4 3 and 8 4 that come into contact with the end face of the rotor 2 are not deformed, and are not deformed.
- the contact pressure between the members 3 4 3 and 8 4 does not increase, and it is possible to prevent wear and seizure from occurring between the roller 2 and both side members 4 25 and 1 100. .
- the back pressure chamber 3556 is arranged on the opposite side of the movable ring 3443 from the cam ring so as to surround the suction chamber 311.
- the center of the movable plate 343 is moved to the periphery of the movable plate 343. It does not deform so as to protrude toward the rotor 2 side compared to the part, and suppresses abrasion and seizure between the rotor side end surface of the movable plate 343 and the rotor 2 end surface.
- the movable plate 343 is provided with the suction port 343a, it is possible to easily cope with a change in the suction characteristics simply by replacing the movable plate 343.
- suction ports are provided on the cam ring side or side block side, there is no need to change the mold, and replace the movable plate with a different notch shape of the suction port.
- the design can be changed only by using. Industrial applicability
- the vane compressor according to the present invention is useful as a refrigerant compressor of an air conditioner for an automatic operator.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP95939397A EP0793020A4 (en) | 1994-12-20 | 1995-12-08 | PALLET COMPRESSOR |
| KR1019970702519A KR970707390A (ko) | 1994-12-20 | 1995-12-08 | 베인압축기(vane type compressor) |
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33497494 | 1994-12-20 | ||
| JP6/334974 | 1994-12-20 | ||
| JP7067095 | 1995-03-03 | ||
| JP7/70670 | 1995-03-03 | ||
| JP7/161485 | 1995-06-05 | ||
| JP16148595 | 1995-06-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1996019667A1 true WO1996019667A1 (en) | 1996-06-27 |
Family
ID=27300397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1995/002515 Ceased WO1996019667A1 (en) | 1994-12-20 | 1995-12-08 | Vane type compressor |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0793020A4 (ja) |
| KR (1) | KR970707390A (ja) |
| WO (1) | WO1996019667A1 (ja) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010113328A (ko) * | 2000-06-19 | 2001-12-28 | 에릭 발리베 | 진공펌프의 베인설치구조 |
| JP2018168780A (ja) * | 2017-03-30 | 2018-11-01 | 株式会社豊田自動織機 | ベーン型圧縮機 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59160875U (ja) * | 1983-04-15 | 1984-10-27 | 日産自動車株式会社 | 可変容量ベ−ンポンプ |
| JPS60256578A (ja) * | 1984-05-31 | 1985-12-18 | Mitsubishi Motors Corp | クリアランス自動調整式油圧ポンプ |
| JPH0414785U (ja) * | 1990-05-24 | 1992-02-06 | ||
| JPH0417186U (ja) * | 1990-05-30 | 1992-02-13 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4050855A (en) * | 1975-02-26 | 1977-09-27 | Nippon Piston Ring Kabushiki Kaisha | Dry air rotary pump or compressor |
| GB2099081A (en) * | 1981-05-05 | 1982-12-01 | Denco Agr Ltd | Sliding-vane rotary compressor |
| JPS58133493A (ja) * | 1982-02-03 | 1983-08-09 | Diesel Kiki Co Ltd | ベ−ン型圧縮機 |
| DE3301098A1 (de) * | 1983-01-14 | 1984-07-19 | Knorr-Bremse GmbH, 8000 München | Rotationskompressor |
-
1995
- 1995-12-08 KR KR1019970702519A patent/KR970707390A/ko not_active Ceased
- 1995-12-08 EP EP95939397A patent/EP0793020A4/en not_active Withdrawn
- 1995-12-08 WO PCT/JP1995/002515 patent/WO1996019667A1/ja not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59160875U (ja) * | 1983-04-15 | 1984-10-27 | 日産自動車株式会社 | 可変容量ベ−ンポンプ |
| JPS60256578A (ja) * | 1984-05-31 | 1985-12-18 | Mitsubishi Motors Corp | クリアランス自動調整式油圧ポンプ |
| JPH0414785U (ja) * | 1990-05-24 | 1992-02-06 | ||
| JPH0417186U (ja) * | 1990-05-30 | 1992-02-13 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP0793020A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0793020A1 (en) | 1997-09-03 |
| EP0793020A4 (en) | 1998-09-09 |
| KR970707390A (ko) | 1997-12-01 |
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