JP5707336B2 - Compressor - Google Patents

Compressor Download PDF

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Publication number
JP5707336B2
JP5707336B2 JP2011547254A JP2011547254A JP5707336B2 JP 5707336 B2 JP5707336 B2 JP 5707336B2 JP 2011547254 A JP2011547254 A JP 2011547254A JP 2011547254 A JP2011547254 A JP 2011547254A JP 5707336 B2 JP5707336 B2 JP 5707336B2
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Prior art keywords
oil
member
separation chamber
formed
chamber
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JP2011547254A
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JPWO2011080865A1 (en
Inventor
高橋 知靖
知靖 高橋
大沢 仁
仁 大沢
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株式会社ヴァレオジャパン
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Priority to JP2009299090 priority Critical
Priority to JP2009299090 priority
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Priority to JP2011547254A priority patent/JP5707336B2/en
Priority to PCT/JP2010/006671 priority patent/WO2011080865A1/en
Publication of JPWO2011080865A1 publication Critical patent/JPWO2011080865A1/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30Rotary-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
    • F04C18/34Rotary-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
    • F04C18/344Rotary-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
    • F04C18/3441Rotary-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 one line or continuous surface substantially parallel to the axis of rotation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10Outer members for co-operation with rotary pistons; Casings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component 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
    • F04B39/04Measures to avoid lubricant contaminating the pumped fluid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02Lubrication; Lubricant separation
    • F04C29/026Lubricant separation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00Manufacture
    • F04C2230/20Manufacture essentially without removing material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C29/0064Magnetic couplings

Description

  The present invention relates to a compressor provided with a centrifugal oil separator, and more particularly to a compressor capable of suppressing an increase in the number of parts associated with the provision of a centrifugal separator.

Conventionally, as a compressor provided with a centrifugal separator, for example, configurations shown in Patent Literature 1 and Patent Literature 2 are known.
Among these, the compressor shown in Patent Document 1 relates to a scroll compressor, and a compression mechanism that sucks and compresses a working fluid is movable with respect to a fixed scroll (fixed portion) fixed to the front housing and the fixed scroll. It is composed of a movable scroll (movable part) that turns (turns), and the movable scroll is driven to turn by a shaft that is rotatably disposed in the front housing. The refrigerant is sucked and compressed by enlarging and reducing. The rear housing fixed to the front housing via a fixed scroll is provided with a centrifugal oil separator that separates the lubricating oil from the refrigerant discharged from the discharge port of the compression mechanism.

The oil separator includes a separation chamber formed in a cylindrical space in a direction perpendicular to the drive shaft in a rear housing, and a substantially cylindrical separation pipe (separator) press-fitted into the separation chamber and disposed coaxially. An inlet hole is formed in the circumferential inner wall surface of the separation chamber to guide the refrigerant discharged from the compression mechanism into the separation chamber, and the separated lubricating oil is stored in the bottom surface of the oil storage chamber. A discharge hole for discharging is formed.
In the publication, the separation chamber of the oil separator is formed integrally with the fixed scroll (fixed portion), the refrigerant is introduced into the separation chamber through the introduction hole opened on the rear housing side, and the separated lubricating oil is supplied. Similarly, a configuration is also disclosed in which discharge is made from a discharge hole opened on the rear housing side to the oil storage chamber, and the discharge pipe is connected to a fixed scroll.

  Further, the compressor disclosed in Patent Document 2 relates to a vane compressor, and is provided with a cam ring (cylinder), a rotor that is rotatably housed in the cam ring and fixed to a shaft, and the rotor. Further, the vane inserted into the plurality of vane grooves, the rear side block fixed to the rear side end surface of the cam ring, and the front surface formed in a shell shape surrounding the front side end surface and the outer peripheral surface of the cam ring and fitted to the rear side block The rear side block has a configuration similar to that described above for separating the lubricating oil mixed in the discharge gas downstream from the through hole formed in the flange portion of the cylinder. A centrifugal oil separator is provided in a direction orthogonal to the drive shaft.

JP 2001-295767 A JP 2009-156231 A

  However, in the former configuration, the oil separator is provided in the fixing member that constitutes the compression mechanism and the rear housing that is fixed to the fixing member, but the separation chamber is formed in a direction perpendicular to the drive shaft. The radially outer end of the chamber will open. For this reason, the separation pipe must be attached as a separate part by being press-fitted into the separation chamber from the opening end side, and there is an inconvenience that the number of parts increases with the provision of the oil separator. In addition, since the separation pipe is formed of separate members, it is necessary to manage the dimensions of the separation pipe and the separation chamber, and the management of the press-fitting position of the separation pipe.

  In the latter configuration, the rear side block fixed to the rear side end surface of the cam ring includes a side block portion that contacts the cam ring and a head portion that is assembled to the side block portion, and is provided on the rear side block. The oil separator is provided in the head portion, and the separation pipe is a separate body. Also in this configuration, since the oil separation chamber is formed in a direction orthogonal to the drive shaft, the radially outer end of the oil separation chamber is opened. In this example, since the lower opening end of the oil separation chamber formed in the cylindrical space is configured to be closed by a plug (lid member), the number of parts is reduced by providing the oil separator. It was a lot.

  The present invention has been made in view of such circumstances, and in a compressor provided with a centrifugal oil separator, a compression capable of avoiding an increase in the number of parts accompanying the provision of the oil separator. The main challenge is to provide a machine.

  In order to achieve the above-mentioned problems, the present inventors have made extensive studies on a configuration that does not require a separate member when providing a centrifugal oil separator. It has been found that if a separator is provided, the number of parts can be reduced, and the present invention has been completed.

That is, the compressor according to the present invention includes a movable member that moves as the shaft rotates, and a fixed member that forms a compression chamber together with the movable member, and flows into the compression chamber as the movable member moves. In the configuration for compressing the working fluid, an oil separator that separates the contained oil by introducing the working fluid compressed in the compression chamber is integrally formed in the fixed member, and one of the movable member and the fixed member is formed. Part or all is housed in a shell member constituting a housing, and the oil separator includes an oil separation chamber for introducing a working fluid compressed in a compression chamber. is covered by the member, the oil separator is provided with the oil separation chamber, and a separating cylinder, wherein are housed in the oil separation chamber to pivot the working fluid introduced into the oil separation chamber Is configured, the separating cylinder and the oil separation chamber is characterized by being formed integrally with the fixing member.

Therefore, since the oil separator is integrally formed with the fixed member that constitutes the compression chamber together with the movable member, it is possible to suppress an increase in the number of parts in order to provide the oil separator. In addition, since the distance from the compression chamber to the oil separator can be shortened, the axial dimension of the compressor can be shortened compared to the conventional one.
Further, the oil separation chamber of the oil separator formed integrally with the fixing member is covered with the shell member constituting the housing at the lower opening end, so that the shell member constituting the housing covers the opening end of the oil separation chamber. It will be substituted as a lid member, and the number of parts will not increase with the provision of the oil separator.

  Here, when the fixed member has a cylinder portion that accommodates the movable member and a side block portion integrated with the cylinder portion, the oil separator is formed integrally with the side block portion. Good.

Further, according to the present invention, since the oil separation chamber and the separation cylinder are formed integrally with the fixed member, the number of parts does not increase with the provision of the oil separator.

The oil separation chamber may have a lower end communicating with the oil storage chamber via an oil discharge path.

  Here, the oil discharge path may be constituted by a gap formed between the fixing member and the shell member, or may be constituted by a groove or a hole formed in the fixing member.

  Therefore, according to such a configuration, the size of the gap formed between the fixing member and the shell member and the groove or hole formed in the fixing member in the communication state between the lower end portion of the oil separation chamber and the oil storage chamber Therefore, the oil supply can be stabilized by suppressing the disturbance of the oil stored in the oil storage chamber.

The oil separation chamber may be extended in a direction substantially orthogonal to the axial direction of the shaft, and the axis thereof may be inclined obliquely with respect to the vertical line.
According to such a configuration, since the axis of the oil separation chamber is formed obliquely with respect to the vertical line, the position of the oil discharge path is relatively high with respect to the oil level, and the oil discharge hole is It is possible to avoid an event where oil cannot be discharged due to immersion in the liquid surface.

  Furthermore, the oil separation chamber may be formed so that the diameter increases toward the lower opening end. In such a configuration, the mold can be easily removed even when the oil separation chamber and the oil separation pipe are integrally formed by casting.

  As described above, according to the present invention, the movable member that moves along with the rotation of the shaft and the fixed member that forms the compression chamber together with the movable member are provided, and the oil separator is provided integrally with the fixed member. Therefore, more specifically, in the case where the fixed member is configured to include a cylinder portion that accommodates the movable member and a side block portion integrated with the cylinder portion, an oil separator is provided in the side block portion. Since they are provided integrally, the number of parts can be reduced.

Further, a part or all of the movable member and the fixed member are accommodated in a shell member constituting the housing, the oil separator is provided with an oil separation chamber for introducing the working fluid compressed in the compression chamber, and the introduced working fluid. In the case of being configured to include a separation cylinder accommodated in the oil separation chamber for swirling, if the lower opening end of the oil separation chamber is covered with a shell member, the oil separation chamber and the separation cylinder are also covered. If the fixing member is integrally formed , a new member becomes unnecessary even when an oil separator is provided.

If the oil separation chamber of the oil separator is formed so as to extend in a direction substantially orthogonal to the axial direction of the shaft and the axis thereof is inclined obliquely with respect to the vertical line, It becomes possible to arrange the oil discharge path formed in the lower end part at a position higher than the oil liquid level, and the oil discharge from the oil separation chamber becomes good.
Here, if the oil discharge path is constituted by a gap formed between the fixing member and the shell member, or a groove or hole formed in the fixing member, the size of the gap or the shape of the groove or hole can be adjusted. Thus, the communication state between the lower end portion of the oil separation chamber and the oil storage chamber can be adjusted, and the oil supply in the oil storage chamber can be suppressed and the oil supply can be stabilized.

  Further, if the diameter is gradually increased toward the lower opening end of the oil separation chamber, the mold can be easily removed when the oil separator is integrally formed by casting, and casting is facilitated.

FIG. 1 is a diagram showing a configuration example of a compressor according to the present invention, (a) is a diagram showing a side section cut so that a discharge path and an oil separator appear, and (b) is a suction path. It is a figure which shows the side cross section cut | disconnected so that an oil storage chamber might appear. 2 is a view showing cross sections of various parts of the compressor shown in FIG. 1, wherein (a) shows a cross-sectional view taken along line AA in FIG. 1, and (b) shows a line BB in FIG. (C) shows a cross-sectional view cut along line CC in FIG. FIG. 3 is a perspective view of a partially cutaway portion of the compressor according to the present invention, (a) is a view showing a state in which a shell member is partially cut away as viewed from the rear side, and (b) is a rear view. It is a figure which shows the state which notched the part of the shell member seen from the side, and a fixing member and a part of oil separator formed in this, (c) is the fixing | fixed cut | disconnected in the part of the oil separator It is a figure which shows a member. FIG. 4A is a cross-sectional view showing another configuration example cut along line CC of the compressor shown in FIG. 1, and FIG. 4B is a view of the shell member viewed from the rear side of the compressor. It is a figure which shows the other example of a structure which notched a part and fixed member and a part of oil separator formed in this.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 to 3 show a vane type compressor suitable for a refrigeration cycle using a refrigerant as a working fluid. This vane type compressor constitutes a movable member 2 that moves as the shaft 1 rotates, a fixed member 4 that forms a compression chamber 3 together with the movable member 2, and a housing that houses the movable member 2 and the fixed member 4. The shell member 5 is provided.

  The fixed member 4 includes a cylinder portion 4a that accommodates the movable member 2, and a rear side block portion 4b that is integrally formed following the rear side of the cylinder portion 4a.

  The movable member 2 is rotatably accommodated in the cylinder portion 4a of the fixed member 4, and has a rotor 2a fixed to the shaft 1 and a vane 2b inserted into a vane groove 6 provided in the rotor 2a. It is configured.

  The shell member 5 includes a front side block portion 5a that abuts on the front side end surface of the cylinder portion 4a, and a cylindrical portion 5b formed so as to surround the outer peripheral surfaces of the cylinder portion 4a and the rear side block portion 4b. Has been.

  The shaft 1 is rotatably supported by a front side block portion 5a of the shell member 5 and a rear side block portion 4b of the fixing member 4 via a plain bearing. The shell member 5 has a suction space (low pressure) configured to include a suction port 7 and a discharge port 8 for the working fluid (refrigerant gas) and a recess 9 formed in the cylinder portion 4 a of the fixing member 4. Space) 10 is formed. A discharge space (high pressure space) 11 described later is defined by the cylinder portion 4 a of the fixing member 4 and the cylinder portion 5 b of the shell member 5, and this discharge space 11 is formed in the rear side block portion 4 b of the fixing member 4. The discharge port 8 communicates with the oil separator 14.

  The space surrounded by the cylinder portion 4a and the rotor 2a have a circular cross section. The axis center of the cylinder portion 4a and the axis center of the rotor 2a are the outer peripheral surface of the rotor 2a and the inner peripheral surface of the cylinder portion 4a. Are provided so as to be in contact with each other at one place in the circumferential direction (offset by a half of the difference between the inner diameter of the cylinder part and the outer diameter of the rotor 2a), and the inner peripheral surface of the cylinder part 4a and the rotor A compression space 13 is defined between the outer peripheral surface 2a. The compression space 13 is partitioned by the vanes 2b to form a plurality of compression chambers 3, and the volume of each compression chamber 3 is changed by the rotation of the rotor 2a.

  The shell member 5 includes a boss portion 5c integrated with the front side block portion 5a, and a pulley 15 for transmitting rotational power to the shaft 1 is rotatably mounted on the shell member 5. The pulley 15 rotates from the pulley 15 via an electromagnetic clutch 16. Power is transmitted to the shaft 1.

  Further, the cylinder portion 4a of the fixing member 4 has flange portions 4c. 4d is formed. The front flange portion 4c is formed in a shape that matches the inner peripheral shape of the shell member 5, is fitted inside the shell member 5, is brought into contact with the end surface of the front side block portion 5a, and the rear side. The flange portion 4d is also formed in a shape that matches the inner peripheral shape of the shell member 5, and is fitted inside the shell member 5 and hermetically sealed with the shell member by a sealing member such as an O-ring. Yes.

  A suction port 17 that communicates with the suction space 10 and a discharge port 18 that communicates with the discharge space 11 are provided on the peripheral surface of the cylinder portion 4 a corresponding to the compression space 13. Therefore, when the cylinder portion 4a is fitted into the shell member 5, the suction space 10 communicates with the compression chamber 3 via the suction port 17, and between the outer peripheral surface of the cylinder portion 4a and the inner peripheral surface of the cylindrical portion 5b. , Both ends are flange portions 4c. A discharge space 11 defined by 4d is formed, and this discharge space 11 can communicate with the compression chamber 3 via a discharge port 18. The discharge port 18 is opened and closed by a discharge valve 19 accommodated in the discharge space 11.

  The discharge space 11 is provided over a substantially entire circumference of the cylinder portion 4a from a portion where the discharge valve 19 is provided with a partition wall 20 protruding in the vicinity of the discharge port 18 of the cylinder portion 4a as a boundary. On the side opposite to the side where the discharge port 18 is provided with respect to 20, it communicates with an oil separator 14 described below through a through hole 21 formed in the flange portion 4 d.

  The oil separator 14 is formed integrally with the rear side block portion 4b of the fixing member 4, and includes an oil separation chamber 22 formed in a cylindrical space communicating with a through hole 21 formed in the flange portion 4d. The oil separation chamber 22 is configured by coaxially arranging a substantially cylindrical separation tube (separator pipe) 23 formed integrally with the fixing member 4 (rear side block portion 4b).

  The oil separation chamber 22 extends in a direction substantially orthogonal to the axial direction of the shaft 1 and is formed so that the axis thereof is inclined obliquely with respect to the vertical line. The lower end portion is opened on the side surface of the rear side block portion 4b. The opening at the lower end of the oil separation chamber 22 is covered with the cylindrical portion 5 b of the shell member 5. In this example, the cylinder portion 5b is extended in the axial direction to the extent that the entire rear side block portion 4b is accommodated, and the oil separation chamber 22 is arranged around the rear side block portion 4b before and after the compressor in the axial direction. A space between the cylindrical portion 5b of the shell member 5 is hermetically sealed by a seal member such as an O-ring provided in a direction.

  Further, the lower opening end of the oil separation chamber 22 (the lower end of the cylindrical wall that defines the oil separation chamber 22) is covered with the cylindrical portion 5 b of the shell member 5. A predetermined gap (0.1 to 0.2 mm) is set between the fixing member 4 and the shell member 5 (more specifically, between the rear side block portion 4b of the fixing member 4 and the cylindrical portion 5b of the shell member 5). The gap 24 is formed (exaggerated in FIG. 2 (c)), and the oil drain that communicates the lower end portion of the oil separation chamber 22 and the oil storage chamber 25 through the gap 24. A road is constructed.

  Accordingly, the working fluid flowing into the oil separation chamber 22 swirls around the separation cylinder 23 accommodated in the oil separation chamber 22, and the mixed oil is separated in the process, and the discharge gas from which the oil is separated is separated. Is delivered to the discharge port 8 via the separation cylinder 23. The separated oil is stored in an oil reservoir formed at the bottom of the fixing member 4 via a gap 24 formed between the fixing member 4 and the shell member 5 so as to communicate with the lower end of the oil separation chamber 22. The oil is stored in the chamber 25 and then supplied to each lubrication portion through the oil supply passage 30 due to a pressure difference between the oil storage chamber 25 and each lubrication portion.

  In the above configuration, rotational power from a power source (not shown) is transmitted to the shaft 1 via the pulley 15 and the electromagnetic clutch 16, and when the rotor 2a rotates, the working fluid flowing into the suction space 10 from the suction port 7 is sucked into the suction port. The air is sucked into the compression space 13 through 17. Since the volume of the compression chamber 3 partitioned by the vane 2b in the compression space changes with the rotation of the rotor 2a, the working fluid confined between the vanes 2b is compressed and is discharged from the discharge port 18 through the discharge valve 19. It is discharged into the discharge space 11. The working fluid projecting into the discharge space 11 moves in the circumferential direction along the outer peripheral surface of the cylinder portion 4a (along the inner peripheral surface of the cylindrical portion 5b of the shell member 5), and makes one round around the cylinder portion 4a. Then, the oil is introduced into the oil separation chamber 22 of the oil separator 14 integrally formed with the rear side block portion 4b through the through hole 21 formed in the flange portion 4d. After that, the working fluid is separated in the course of swirling in the oil separation chamber, is discharged through the separation cylinder 23 from the discharge port 8 to the external circuit, and the separated oil is formed at the lower end of the oil separation chamber 22. The oil is stored in the oil storage chamber 25 through the gap 24.

  Accordingly, the working fluid discharged from the discharge port 18 passes through the discharge space 11 formed between the cylinder portion 4a of the fixing member 4 and the cylindrical portion 5b of the shell member 5 from the portion where the discharge port 18 faces through the through hole 21. The pressure pulsation of the discharge gas is reduced in the process of moving toward the portion where the gas reaches, and further, the gas is guided to the oil separation chamber 22 of the oil separator 14 only through the through hole 21 of the flange portion 4d. In the process, the pressure pulsation of the discharge gas is reduced. Further, the pressure pulsation is reduced in the process of passing through the oil separator 14, and the oil is sent from the discharge port 8 in a state where the pulsation is small.

  Further, in the above-described compressor, the cylinder portion 4 a that houses the movable member 2 (rotor 2 a, vane 2 b) that moves with the rotation of the shaft 1 and the rear side block portion 4 b are formed integrally with the movable member 2. Since the fixing member 4 constituting the compression chamber 3 is configured, and this fixing member 4 is accommodated in the shell member 5 in which the front side block portion 5a and the cylindrical portion 5b are integrally formed, the number of parts of the compressor Can be reduced. Moreover, the oil separator 14 is formed integrally with the rear side block portion 4b of the fixing member 4 so that the lower end opening of the oil separation chamber 22 covers the cylinder portion 5b of the shell member 5 to the rear side end portion of the rear side block portion 4b. Therefore, the closing member for covering the oil separation chamber 22 is not necessary, and the increase in the number of parts due to the provision of the oil separator 14 is eliminated.

  For this reason, since the oil separator 14 can be integrally provided in the rear side block portion 4b and the number of parts can be reduced, the manufacturing cost can be reduced, and the axial dimension of the compression chamber can be reduced with the conventional oil separator. It becomes possible to shorten compared with the provided vane type compressor.

The oil separation chamber 22 is formed obliquely with respect to the vertical direction, and the separated oil is guided to the oil storage chamber 25 through the gap 24 formed at the lower end portion. Oil discharge is not hindered by the oil stored in the oil storage chamber 25, and the oil supply chamber 25 can be prevented from being disturbed by appropriately adjusting the gap 24 to stabilize the oil supply. Can be achieved.
Furthermore, since the oil separation chamber 22 is formed to have a larger diameter as it goes downward (toward the opening end), the mold can be easily formed when the fixing member 4 is integrally formed with the oil separator 14 by casting. Can be easily removed, and casting is facilitated.

  In the above-described configuration, an example in which the oil discharge path that communicates the lower end portion of the oil separation chamber 22 and the oil storage chamber 25 is formed by a gap 24 formed between the fixed member 4 and the shell member 5. As shown in FIG. 4, the oil discharge passage formed at the lower end of the oil separation chamber 22 may be configured by a groove 24 ′ formed in the fixing member 4 or a hole (not shown). Good. Even with such a configuration, it is possible to stabilize the oil supply by suppressing the disturbance of the oil stored in the oil storage chamber 25 by adjusting the shapes of the grooves 24 ′ and the holes.

  Moreover, although the example applied to the vane type compressor was shown, it has a fixed scroll (fixed member) fixed to the housing, and a movable scroll (movable member) that moves (turns) with respect to the fixed scroll. A scroll type compressor that sucks and compresses refrigerant by rotating a scroll by a shaft rotatably disposed in a housing and enlarging or reducing the volume of a compression chamber formed by both scrolls while the movable scroll is swung. On the other hand, the configuration described above may be employed when a centrifugal separation type oil separator is provided on the fixing member. Further, in the above-described configuration, the configuration example in which the oil separator 14 is provided in the rear side block portion 4b integrated with the cylinder portion 4a and accommodated in the shell member 5 has been described, but the front side integrated with the cylinder portion has been described. In the configuration in which an oil separator is provided in the block portion and this is accommodated in the shell member, the same configuration as described above may be adopted.

DESCRIPTION OF SYMBOLS 1 Shaft 2 Movable member 3 Compression chamber 4 Fixed member 5 Shell member 14 Oil separator 4a Cylinder part 4b Rear side block part 5a Front side block part 5b Cylinder part 22 Oil separation chamber 23 Separation cylinder 24 Gap 24 'Oil discharge hole 30 Oil supply aisle

Claims (7)

  1. In a compressor comprising a movable member that is movable as the shaft rotates, and a fixed member that forms a compression chamber together with the movable member, and compresses the working fluid that flows into the compression chamber as the movable member moves.
    An oil separator that separates the contained oil by introducing the working fluid compressed in the compression chamber into the fixing member is integrally formed,
    Part or all of the movable member and the fixed member are accommodated in a shell member constituting a housing, and the oil separator includes an oil separation chamber for introducing a working fluid compressed in a compression chamber, and the oil separation chamber The lower open end of the shell is covered with the shell member ,
    The oil separator includes the oil separation chamber and a separation cylinder accommodated in the oil separation chamber for swirling the working fluid introduced into the oil separation chamber. The separation cylinder is formed integrally with the fixing member .
  2.   The fixed member includes a cylinder portion that houses the movable member, and a side block portion integrated with the cylinder portion, and the oil separator is formed integrally with the side block portion. The compressor according to claim 1.
  3. The compressor according to claim 1 or 2, wherein a lower end portion of the oil separation chamber communicates with the oil storage chamber via an oil discharge path.
  4. The compressor according to claim 3 , wherein the oil discharge path is a gap formed between the fixing member and the shell member.
  5. The compressor according to claim 3 , wherein the oil discharge path is a groove or a hole formed in the fixing member.
  6. The oil separation chamber, one of the claims 1 to 5, characterized in that the axis thereof while being extended in a direction substantially perpendicular to the axial direction of the shaft is inclined obliquely to the vertical line The compressor according to crab.
  7. The compressor according to any one of claims 1 to 6 , wherein the oil separation chamber has a diameter that gradually increases toward the lower opening end.
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JP5708570B2 (en) * 2012-06-19 2015-04-30 株式会社豊田自動織機 Vane type compressor
JP2015004288A (en) * 2013-06-20 2015-01-08 株式会社ヴァレオジャパン Vane type compressor
JP6238726B2 (en) * 2013-12-20 2017-11-29 株式会社ヴァレオジャパン Compressor
KR101964588B1 (en) * 2014-01-09 2019-04-03 한온시스템 주식회사 Vane rotary compressor
JP6081408B2 (en) * 2014-06-13 2017-02-15 本田技研工業株式会社 Rotating body lubrication structure
JP6299587B2 (en) * 2014-12-25 2018-03-28 株式会社豊田自動織機 Vane type compressor
JP6299586B2 (en) * 2014-12-25 2018-03-28 株式会社豊田自動織機 Vane type compressor
KR20170040409A (en) 2015-10-02 2017-04-13 한온시스템 주식회사 Vane rotary compressor
CN105971881B (en) * 2016-07-05 2017-12-08 烟台正祺科技有限公司 A kind of anti-emulsion electric compressor
CN106050671B (en) * 2016-07-13 2018-01-09 烟台正祺科技有限公司 A kind of air compressor gas and oil separating plant and its oil and gas separation method
KR20180129428A (en) * 2017-05-26 2018-12-05 엘지전자 주식회사 Rotary compressor

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JP2015028343A (en) 2015-02-12
WO2011080865A1 (en) 2011-07-07
EP2520803A4 (en) 2015-12-23
EP2520803B1 (en) 2018-10-17
JPWO2011080865A1 (en) 2013-05-09
EP2520803A1 (en) 2012-11-07
BR112012016141A2 (en) 2016-05-31
CN102667165B (en) 2015-02-11
CN102667165A (en) 2012-09-12

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