CN103109089A

CN103109089A - Scroll type compressor

Info

Publication number: CN103109089A
Application number: CN2011800447594A
Authority: CN
Inventors: 河村裕司; 李卿在
Original assignee: Valeo Japan Co Ltd
Current assignee: Valeo Japan Co Ltd
Priority date: 2010-09-21
Filing date: 2011-09-14
Publication date: 2013-05-15
Anticipated expiration: 2031-09-14
Also published as: JP2012067602A; EP2631484A1; CN103109089B; WO2012039109A1; JP5612411B2; US20130280115A1; EP2631484A4

Abstract

While using an Oldham mechanism as a spin prevention unit mechanism, an Oldham ring is positively lubricated by keeping a medium mixed with oil on a back surface of a turning scroll, and a compression mechanism is kept compact. In a scroll type compressor in which an Oldham ring (18) is provided between a turning scroll member (11) and a block member (5) that axially supports a drive shaft, a fixed scroll member (10) and the block member (5) hold an annular thrust race (16) that receives a load in an axial direction from the turning scroll member (11) with the thrust race sandwiched therebetween, an end surface of the turning scroll member (11) is slidably brought into close contact with the thrust race (16) on an entire circumference thereof, the thrust race (16) is brought into close contact with the end surface of the block member (5); to the outer side in a radial direction beyond key groove portions (25b, 25c) which are paired and formed on the block member (5), the turning scroll member (11), the thrust race (16), and the block member (5) define a retention space, and the medium mixed with oil is retained in the retention space.

Description

Scrawl compressor

Technical field

The present invention relates to be applied in the Scrawl compressor in the freeze cycle etc. of air conditioner for vehicles, particularly relate to the Scrawl compressor of the reliability of the anti-rotation mechanism that can guarantee to use euclidean Ring.

Background technique

Scrawl compressor has fixed scroll member and rotary vortex rotary part, revolution motion by rotary vortex rotary part, be formed at when pressing chamber between the scrollwork wall of two scroll elements reduces its volume and move to the center, carry out the compression of working fluid, this fixed scroll member is fixed in housing and has end plate and found the scrollwork wall of establishing from this end plate, and this rotary vortex rotary part is relative with this fixed scroll member to be configured and has end plate and found the scrollwork wall of establishing from this end plate.

In this compressor, the opposition side of a side of facing in the fixed scroll member of rotary vortex rotary part, the block parts (shaft supporting part) of axle supporting driving shaft are fixed in housing, at following patent documentation 1, in 2, be provided be used to the euclidean Ring that prevents the rotary vortex rotary part rotation between these block parts and rotary vortex rotary part.

This euclidean Ring possesses the key section of accommodating slidably in the keyway that is formed at respectively block parts and rotary vortex rotary part, always be in the state that slips with block parts and rotary vortex rotary part, therefore need to guarantee good lubricating.

therefore, in patent documentation 1, be provided with the penetration hole that keeps freely the main bearing of live axle to install for rotation on the block parts, the support that extends to central authorities radially in the end of penetration hole, the roll bearing swing space that the oscillation bearing of installing for the eccentric swing axis that is installed on live axle swings, the main body swing space that rotary vortex rotary part (swinging the vortex main body) swings, on the face of the radially expansion from the roll bearing swing space to the main body swing space towards radial outside and the thrust bearing division that swings vortex main body butt, the euclidean Ring accommodating groove that forms to the radial outside of this thrust bearing division, the block side switch groove that radially forms towards the surrounding wall portion of main body swing space from this euclidean Ring container, in addition, be provided with the vortex side switch groove that radially form vertical with block side switch groove on rotary vortex rotary part, euclidean Ring is configured in described euclidean Ring accommodating groove, have the block side pawl that is inserted into sliding freely the block side switch groove that is formed at described block parts and be inserted into sliding freely the vortex side pawl of the vortex side switch groove that is formed at rotary vortex rotary part.

and, disclose following formation: be provided with and be disposed between live axle and support and by live axle and block zoning and the oily space that is communicated with oil storage section, the bearing space that goes out by swing axis being inserted on oscillation bearing and by zoning, the guide hole that is communicated with these oily spaces and bearing space, by with the oily space of Sealing blocking and roll bearing swing space, form lubricant oil in oily space → the lubricant oil path that the butt sliding parts → roll bearing swing space → thrust bearing division → main body swing space flows of oily guide hole → bearing space → oscillation bearing → swing axis and oscillation bearing, in addition, by the swaying direction along rotary vortex rotary part, the block side pawl of setting from the main body swing space of accommodating rotary vortex rotary part to euclidean Ring sliding freely the block side switch groove of plug-in mounting to the Oil Guide section of radial outside expansion, utilize the oscillating motion of rotary vortex rotary part, extrude the lubricant oil in the main body swing space along Oil Guide section to radial outside, thereby supply oil supply to block side switch groove energetically.

In addition, patent documentation 2 discloses following formation: wear and tear in the slide part generation of euclidean Ring in order to suppress lubricant oil fully not to be full of the back side of rotary vortex rotary part, perhaps suppress to produce the vibration of euclidean Ring, the bad phenomenon of impulsive sound, the back side at rotary vortex rotary part arranges back pressure chamber, utilization is arranged at the pressure that control valve unit between this back pressure chamber and suction chamber is regulated this back pressure chamber, so that rotary vortex rotary part pushes to the fixed scroll side, and, make lubricant oil be full of this back pressure chamber to prevent the wearing and tearing at the euclidean Ring of this back pressure chamber configuration.

The prior art document

Patent documentation

Patent documentation 1: Japanese kokai publication hei 8-219061 communique

Patent documentation 2: TOHKEMY 2006-266123 communique

Summary of the invention

Invent problem to be solved

But, in the scroll compressor of patent documentation 1, after making the oil that supplies to from the gap of bearing of rotation vortex via the thrust slip surface, the keyway of the euclidean Ring by swinging vortex guides to the suction zone in the rotation vortex outside, particularly owing to not having the structure that keeps oil, the oil that therefore flows into the main body swing space can not stop at this, intactly sucks compressing mechanism, therefore, worry to produce the block side pawl of euclidean Ring and the lubricated inadequate bad phenomenon of block side switch groove.

Particularly, use in compressor at the vehicle that compressor is horizontal, due to sometimes also with the suction channel setting of compressing mechanism in the bottom, therefore may supply with sufficient oil to the slide part (pawl of the euclidean Ring on top and keyway etc.) that is positioned at the compressor top, worry thus lack of lubrication.

For this a bit, the structure that has adopted the pressure that utilizes back pressure chamber that rotary vortex rotary part is floated fully in patent documentation 2 and connected airtight with fixed scroll member, therefore, even back pressure leaks to the radial outside of the end plate of rotary vortex rotary part via the keyway of block parts (main bearing parts) and the rotation gap of vortex or euclidean Ring, also can keep the oil of back pressure chamber.But, in this back pressure of utilizing rotary vortex rotary part in the mode of fixed scroll member extruding, owing to improving the pressure at the back side of rotary vortex rotary part for the suction pressure of compressing mechanism zone, therefore, need to cover with the end plate of rotation vortex the compression volume that the suction pressure zone with fixed scroll member is included, the scroll wrap of relative rotary vortex rotary part, end plate is very large, thus the unfavorable condition that the external diameter that certainly exists rotary vortex rotary part increases and then the external diameter of compressor increases.

The present invention develops in view of the above problems, its major subjects is to provide a kind of Scrawl compressor, make in the situation that as anti-rotation mechanism use Euclidean mechanism, form at the back side of rotary vortex rotary part and can make oil or be mixed with the space that oily working fluid stops to a certain degree, carry out reliably the lubricated of euclidean Ring, and can keep the compactness of compressing mechanism.

Another problem is, suppresses to be disposed at rocking of euclidean Ring between rotary vortex rotary part and block parts.

Be used for solving the technological scheme of problem

In order to realize above-mentioned problem, the invention provides a kind of Scrawl compressor, possess: fixed scroll member, in housing, its sense of rotation and axial movement are limited; Live axle, its transmitting rotary power; Rotary vortex rotary part, itself and described fixed scroll member in the face of and configure, and via eccentric shaft and the link of described live axle with respect to the axle center bias of described live axle, carry out thus revolution motion centered by the axle center of described live axle; The block parts, the opposition side of the side of facing with described fixed scroll member that it is arranged on described rotary vortex rotary part (with described housing integrally formed or be fixed in described housing), and the described live axle of axle supporting; Rotation preventing member, it is disposed between described rotary vortex rotary part and described block parts, a plurality of key section that possesses that a plurality of keyway section of can be slidably and forming engages on the back side of described rotary vortex rotary part, and a plurality of key section that possesses that a plurality of keyway section of can be slidably and forming engages on described block parts and end face that described rotary vortex rotary part is faced, by make these keys sections respectively with the engaging of corresponding described keyway section, prevent the rotation of described rotary vortex rotary part; Utilize the revolution motion of described rotary vortex rotary part, make the pressing chamber that is formed by described fixed scroll member and described rotary vortex rotary part reduce its volume and move to central side, thus compressed media; Described Scrawl compressor is characterised in that, the ring-type Thrust ring of described rotary vortex rotary part is born in clamping in the axial direction between described fixed scroll member and described block parts; Make this Thrust ring can slip the whole circumference of end face of the described rotary vortex rotary part faced with described Thrust ring connect airtight, and the end face of described Thrust ring and described block parts is connected airtight and is fitted into the position near radial outside than the keyway section that is formed at described block parts always; Go out parking space by described rotary vortex rotary part, described Thrust ring and described block parts zoning, supply with by the medium after described pressing chamber compression (oil or be mixed with the working fluid of oil) to this parking space, and make this medium rest on this parking space.

therefore, clamping Thrust ring between fixed scroll member and block parts, whole circumference and the Thrust ring of the end face of rotary vortex rotary part can be connected airtight with slipping, therefore, the medium that is imported into parking space can not leak between rotary vortex rotary part and Thrust ring, and, the end face of Thrust ring and block parts is connected airtight and be fitted into the position near radial outside than the keyway section that is formed at the block parts always, therefore, the medium that imports parking space via the keyway section that is formed at the block parts can not leak yet, can make by the medium after pressing chamber compression (oil or be mixed with the working fluid of oil) and stay in by rotary vortex rotary part, the parking space that Thrust ring and block parts zoning go out, thereby can keep good the lubricating of euclidean Ring.Therefore in addition, be provided with Thrust ring between fixed scroll member and block parts, do not need end plate with the rotation vortex to cover the compression volume that the suction pressure zone with fixed scroll is included, can dwindle the external diameter that rotates vortex.

At this, the formation of connecting airtight as the whole circumference of the end face that makes Thrust ring and rotary vortex rotary part opposed with it, can be also following formation: by with the back side of the end plate of the opposed described rotation vortex of described Thrust ring on form recess, form the ring-type slip surface that connects airtight for described Thrust ring, and this slip surface is not exposed from described Thrust ring.

In addition, as the formation of supplying with to the parking space that gone out by rotary vortex rotary part, Thrust ring and block parts zoning by the medium after the pressing chamber compression (oil or be mixed with the working fluid of oil), can be also following formation: the behind of the fixed scroll member in housing arranges the discharging area of discharging at the compressed working fluid of pressing chamber, and this discharging area and parking space are communicated with via the pressure feed path that is formed with restriction midway.

In addition, also can be communicated with via the pressure discharge path with parking space with to the suction path that pressing chamber imports working fluid, and the pressure regulator valve of configuration midway at this pressure discharge path, regulate thus the stop state of the medium of parking space, the pressure of parking space is maintained predefined authorized pressure.

Concrete example as above-mentioned formation, can be also following formation: rotation preventing member is disposed at the Euclidean accommodation section that forms on the block parts, this rotation preventing member constitutes to have: ring portion, from this ring portion give prominence to and run through described Thrust ring and the paired key section that can be slidably engages with the paired keyway section that is formed at the described rotary vortex rotary part back side, to the radially two side-prominent and paired key sections that can be slidably engage with the paired keyway section that is formed at described block parts of described ring portion; Described Euclidean accommodation section is communicated with by the ring portion accommodation section of accommodating described ring portion and with this ring portion accommodation section and the described paired keyway section that can engage slidably to the radially two side-prominent paired key sections of described ring portion is consisted of; A keyway section in described pressure feed path and the described paired keyway section that is formed at described block parts is communicated with, another keyway section in described pressure discharge path and the described paired keyway section that is formed at described block parts is communicated with.

By consisting of this structure, to discharging the working fluid of discharging the chamber in this separating oil to a certain degree, at the oil of this separation or the working fluid that is mixed with oil from discharging the keyway section of chamber import paired keyway section via the pressure feed path, be imported into another keyway section by the ring portion accommodation section afterwards, after this flow out to the inlet passage footpath via the pressure discharge path, therefore can supply with abundant oil to the sliding position of euclidean Ring etc.

The invention effect

as mentioned above, according to the present invention, the ring-type Thrust ring of rotary vortex rotary part is born in clamping in the axial direction between fixed scroll member and block parts, the whole circumference of the end face of this Thrust ring and this rotary vortex rotary part can be connected airtight with slipping, and, the end face of this Thrust ring and block parts is connected airtight and be fitted into the position near radial outside than the keyway section that is formed at the block parts always, form thus by rotary vortex rotary part, the parking space that Thrust ring and block parts zoning go out, make by the medium after the pressing chamber compression and rest on this parking space, therefore, can adopt Euclidean mechanism as anti-rotation mechanism, and can make oil or rest on the back side that rotates vortex with being mixed with oily working fluid degree, therefore, no matter with which kind of state, compressor is set, can both carry out reliably the lubricated of euclidean Ring, and can keep the compactness of compressing mechanism.

in addition, rest on by rotary vortex rotary part in order to make by the medium after the pressing chamber compression, the space that Thrust ring and block parts zoning go out, be communicated with via the pressure feed path that is formed with restriction midway as long as will discharge by the discharging area of the working fluid of pressing chamber compression and parking space, and, be communicated with via the pressure discharge path that disposes pressure regulator valve midway with parking space with to the suction path that pressing chamber imports working fluid, just can utilize pressure regulator valve to regulate the stop state of the medium that stays in parking space, and the pressure of parking space can be adjusted at the intermediate pressure of hope.

in addition, rotation preventing member is disposed at the Euclidean accommodation section that forms on block portion, this rotation preventing member is constituted have ring portion, give prominence to and run through described Thrust ring and the paired key section that can be slidably engages slidably with the paired keyway section at the back side that is formed at rotary vortex rotary part from this ring portion, the radially euclidean Ring of the two side-prominent and paired key sections that can be slidably engage with the paired keyway section that is formed at the block parts to ring portion, in the situation that described Euclidean accommodation section is communicated with by the ring portion accommodation section of accommodating ring portion and with this ring portion accommodation section and the paired keyway section that can engage slidably to the radially two side-prominent paired key sections of ring portion is consisted of, by a keyway section in pressure feed path and the paired keyway section that is formed at the block parts is communicated with, and another keyway section in pressure discharge path and the paired keyway section that is formed at the block parts is communicated with, formation makes by the path of the medium after pressing chamber compression (oil or be mixed with the working fluid of oil) by the sliding parts of euclidean Ring, therefore, how tube compressor does not arrange state, can both supply with abundant oil to the sliding position of rotation preventing member etc., can guarantee good lubricating status.

Description of drawings

Fig. 1 means the sectional drawing of the whole configuration example of Scrawl compressor of the present invention, is the figure that comprises the C-C line cutting plane of Fig. 5 and Fig. 6 (b);

Fig. 2 mean Scrawl compressor of the present invention from the block parts until the exploded perspective view of each part of using of fixed scroll member;

Fig. 3 (a) means the sectional drawing from the fixed scroll member in the housing that is contained in Scrawl compressor to the block parts, is the figure that the B-B line with Fig. 5 and Fig. 6 (b) dissects, and Fig. 3 (b) is the figure from the fixed scroll member of end on observation Fig. 3 (a);

Fig. 4 means the figure of rotary vortex rotary part, and Fig. 4 (a) is the sectional drawing that the B-B line with Fig. 4 (b) and Fig. 5 dissects, and Fig. 4 (b) is the figure from end on observation and the opposed side of Thrust ring;

Fig. 5 is from end on observation block parts and the figure opposed side of Thrust ring;

Fig. 6 (a) means the sectional drawing from the rotary vortex rotary part of Fig. 3 (a) to the block parts, is the figure that the B-B line with Fig. 5 and Fig. 6 (b) dissects, and Fig. 6 (b) is the figure that observes from the A-A line of Fig. 6 (a).

Embodiment

Below, illustrate referring to the drawings the mode of execution when making compressing mechanism and the integrated motor compressor of motor as Scrawl compressor of the present invention.

Fig. 1 represents the motor compressor that is suitable for freeze cycle 1 take refrigeration agent as working fluid.In this motor compressor 1, compressing mechanism 3 is configured in left side in the figure in the housing 2 of being made by aluminum alloy, the motor 4 of drive compression mechanism is configured in right side in figure.Need to prove, in Fig. 1, be the place ahead of compressor with the right side-looking of figure, is the rear of compressor with the left side-looking of figure.

Be provided with live axle 8 in housing 2, this live axle 8 is rotatably supported in front wall portion 2a via bearing 6,7 and is fixed on the inboard middle block parts (shaft supporting part) 5 of this housing 2.

Compressing mechanism 3 is the Scrawls with rotary vortex rotary part 11 of fixed scroll member 10 and configuration relative to it, fixed scroll member 10 is made of the scrollwork wall 10c of discoideus end plate 10a, periphery wall 10b cylindraceous and scroll, this end plate 10a is fixed on the posterior medial of housing 2, this periphery wall 10b is arranged on whole circumference and towards the place ahead along the outer rim of this end plate 10a and erects, and this scrollwork wall 10c extends towards the place ahead from above-mentioned end plate 10a in the inboard of this periphery wall.

In addition, the scrollwork wall 11c of the scroll that rotary vortex rotary part 11 erects towards the rear by discoideus end plate 11a with from this end plate 11a consists of, be arranged at the rearward end of live axle 8 and link with the boss part 11b that is formed at the end plate 11a back side via axle sleeve 12 and bearing 13 with respect to the eccentric shaft 8a of the axle center bias of live axle, but this rotary vortex rotary part 11 is supported to revolution motion centered by the axle center of live axle 8.

Scrollwork wall

10c, 11c separately is intermeshing for fixed scroll member 10 and rotary vortex rotary part 11, the front end of each scroll element and with end plate 10a, the 11a butt of the scroll element of its pairing, thus, mark pressing chamber 15 at the end plate 10a by fixed scroll member 10 and scrollwork wall 10c, the end plate 11a of rotary vortex rotary part 11 and the space region that scrollwork wall 11c surrounds.

In addition, also figure is shown with in Fig. 2 and Fig. 3, the Thrust ring 16 of the lamellar and ring-type of clamping between the end face 5a of the periphery wall 10b of fixed scroll member 10 and block parts 5, and fixed scroll member 10 and block parts 5 are across these Thrust ring 16 docking.

This Thrust ring 16 is formed by the raw material of abrasion resistance excellence, form the size with outer rim shape consistent with the outer rim shape of the end face 5a of its opposed block parts 5, be formed with in the central the central hole 16a that the boss part 11b for rotary vortex rotary part 11 runs through.In addition, fixed scroll member 10, Thrust ring 16 and block parts 5 are positioned fixing by the locating stud 9 that inserts at the pin insertion hole 16c that is formed at Thrust ring 16.

Also figure is shown with in Fig. 4, described rotary vortex rotary part 11 at its back side with the reservation Rack (for example, the mode of periphery about 2mm) is from periphery to (for example, 0.5mm left and right) depression (making the reduced thickness of end plate) and form recess 11d a little between boss part 11b.Described Thrust ring 16 makes the boss part 11b of described rotary vortex rotary part 11 insert central hole 16a and connects airtight with the whole circumference at the back side of rotary vortex rotary part 11, therefore, the mode that is formed with to surround recess 11d at the back side of the end plate 11a of rotary vortex rotary part 11 is formed at the ring-type slip surface 11f of Rack of the periphery of end plate 11a.

The slip surface 11f of this rotary vortex rotary part 11 forms not the central hole 16a and the groove 16b(that cross Thrust ring 16 because of the revolution motion of rotary vortex rotary part 11 makes central hole 16a and groove 16b always be positioned at the inboard), and slip in the mode of not exposing from Thrust ring 16.

In addition, be formed with at recess 11d the keyway 11e of section that radially extends.The keyway 11e of section that is formed at this recess 11d does not form the degree of the periphery (until passing slip surface 11f) over end plate 11a, and is formed at the inboard of the slip surface 11f of ring-type.

block parts 5 have penetration hole 5b in central authorities, its internal surface forms the tubular that internal diameter is increased steppedly, from distance Thrust ring 16 front side farthest, be formed with successively the sealing accommodation section 22 of accommodating for the sealed member 21 between sealing block body component 5 and live axle 8, contain the bearing portion accommodation section 23 of described bearing 6, accommodate the counterweight accommodation section 24 of the counterweight 19 that forms one with described axle sleeve 12 and rotate along with the rotation of live axle 8, from the end face 5a of block parts 5 form and and Thrust ring 16 between accommodate the Euclidean accommodation section 25 of euclidean Ring 18 described later.

The anti-rotation mechanism of rotary vortex rotary part 11 is made of rotary vortex rotary part 11 and the block parts 5 of euclidean Ring (rotation preventing member) 18, these euclidean Ring 18 engagings.Euclidean Ring 18 form the ring-type of the boss part that can insert rotary vortex rotary part ring portion 18a, begin to the outstanding paired key 18b of section that forms of Normal direction, along the paired key 18c of section that radially extends with the arm shape of ring portion 18a from rotary vortex rotary part 11 sides of this ring portion 18a, two key 18b of section form at the 180 degree phase bit positions that stagger respectively, two key 18c of section form at the 180 degree phase bit positions that stagger respectively, and the key 18b of section stagger 90 degree phase places are arranged (connect to the line of the right key 18b of section and connect to the line quadrature of the right key 18c of section) relatively.

The 18b of key section runs through the groove 16b from the central hole 16a that is formed at Thrust ring 16 along upper downward-extension figure, the keyway 11e of section that radially extends with recess 11d at rotary vortex rotary part 11 with have micro-gap and slidably mode engage, only can move on the bearing of trend (being above-below direction in this example) of the keyway 11e of section.

also there is diagram the Euclidean accommodation section 25 that is used for accommodating euclidean Ring 18 that is formed at block parts 5 at Fig. 5, have the toroidal ring portion accommodation section 25a that begins to form from the opening end of the Thrust ring side of block parts 5 and the keyway 25b of section that radially extends from this ring

portion accommodation section

25a, 25c, the ring portion 18a of euclidean Ring 18 accommodates into permission at ring portion accommodation section 25a and moves to the bearing of trend of the key 18c of section, and, the paired key 18c of section and the keyway 25b of section, 25c with have micro-gap and slidably mode engage, only at this keyway 25b of section, can move on the bearing of trend of 25c (substantially horizontal in this embodiment).

Therefore, rotation rotary vortex rotary part 11 generation rotation power because of live axle 8, yet the paired key 18b of section by euclidean Ring 18 reciprocatingly slides at the paired keyway 11e of section that is formed at rotary vortex rotary part 11, and the paired key 18c of section reciprocatingly slides at paired the keyway 25b of section, the 25c that are formed at block parts 5, and rotation is limited but revolution motion is carried out in the axle center of relative drive shaft 8.

Need to prove, the size that is formed at the central hole 16a of Thrust ring 16 runs through for the boss part 11b that can make described rotary vortex rotary part but can not insert the degree of the ring portion 18a of euclidean Ring 18, and the ring portion 18a of euclidean Ring 18 can slip with the central hole periphery of the block side end face of Thrust ring 16.In addition, make the groove 16b that the key 18b of section runs through predict the movement of euclidean Ring 18 and form in the movable scope of the key 18b of section.

In addition, the end face of Thrust ring 16 and block parts 5 connects airtight to block the keyway 25b of section, the 25c of Euclidean accommodation section 25.That is, the end face of Thrust ring 16 and block parts 5 connects airtight and is fitted into the keyway 25b of section that is formed at the block parts, the radial outside of 25c always, and the Euclidean accommodation section 25 of block parts 5 forms in the inboard of connecting airtight the position of Thrust ring 16 and block parts 5.In this embodiment, due to the in the same size of the end surface shape of the size of the outer rim of Thrust ring 16 and block parts 5, therefore, the whole face of the end face of Thrust ring and block parts 5 connects airtight, and also stops up the lead-in groove 38 in pressure feed described later path 45 simultaneously.

Need to prove, live axle 8 inserts block parts 5 via bearing 6, disposes sealed member 21 in the sealing accommodation section 22 of block parts 5, seals airtightly with sealing parts 21 between live axle 8 and block parts 5.

Therefore, Thrust ring 16 connects airtight because of the end face of its front side and block parts 5, the whole circumference of the slip surface 11f of rear side and rotary vortex rotary part 11 connects airtight, and is forming parking space 50 by the zone that is rotated scroll element 11,

Thrust ring

16,5 encirclements of block parts.

But, between the outermost perimembranous of the scrollwork wall 11c of the periphery wall 10b of above-mentioned fixed scroll member 10 and rotary vortex rotary part 11, be formed with via sucking path 41 and suck from the suction chamber 26 of the refrigeration agent of suction port 40 importings described later, and, the behind of the fixed scroll member 10 in housing, zoning goes out to discharge chamber 28 between the rear sidewall 2b of this fixed scroll member 10 and housing 2, the refrigerant gas that discharge by pressing chamber 15 compressions via the tap hole 27 of the substantial middle that is formed at fixed scroll member 10 this discharge chamber 28.To the separation of discharging the oil of refrigerant gas in this carries out gas to a certain degree of discharging chamber 28, never illustrated exhaust port is to the pressurized conveying of outside refrigerant circuit.And separated oil also is stored in the refrigeration agent that is mixed with oil and is arranged at the reservoir chamber 31 that discharges 28 belows, chamber.Form the high-pressure area by this discharge chamber 28 and reservoir chamber 31.

Relative with it, in housing 2 than block parts 5 part on the front, be formed with the motor containing space 32 of accommodating motor 4, be fixed with at this stator 33 that consists of motor 4.This stator 33 consists of with the coil 35 that is wound in this iron core 34 by being iron core 34 cylindraceous, is fixed in the internal surface of housing 2.And, being installed with the rotor 36 that is consisted of by the magnet of rotatably accommodating in the inboard of stator 33 on described live axle 8, this rotor 36 utilizes the formed rotation magnetic force of stator 33 to rotate along with the rotation of live axle 8.Consist of by these stators 33 and rotor 36 motor 4 that is consisted of by brushless DC motor.

In addition, be formed with the suction port 40 that sucks refrigerant gas in the side of the housing 2 of facing with this motor containing space 32, and consisting of has via the gap between stator 33 and housing 2, not shown is formed between block parts 5 and housing 2 and the gap between fixed scroll member 10 and housing 2, will import from the refrigeration agent that suction port 40 flows into containing spaces 32 the suction path 41 of described suction chamber 26.

In addition, bottom in fixed scroll member 10, path 42 is arranged in end plate 10a and the periphery wall 10b of fixed scroll member 10, the opening part with this path 42 opposed position at Thrust ring 16 is formed with through hole 43, wherein this path 42 makes the one end at apotheca 31 openings of a part that consists of discharging area, make the other end with the opposed end face opening of Thrust ring 16.And, block parts 5 with the opposed end face of Thrust ring 16, be provided with from the lead-in groove 44 that forms along the outer rim of block parts 5 towards a keyway 25b of section with the through hole 43 opposed position of Thrust ring 16.

Therefore, discharging area is communicated with a keyway 25b of section via path 42, through hole 43, lead-in groove 44, is made of the pressure feed path 45 that discharging area and Euclidean accommodation section 25 are communicated with this path 42, through hole 43, lead-in groove 44.And 45 midway in this pressure feed path, in this embodiment, is formed with aperture 46 near the end of apotheca 31 openings, and side disposes filter 47 at its upstream.

In addition, be formed with an end at another keyway 25c of section opening on block parts 5, and the other end sucks the path at the motor containing space 32(with block parts 5 back sides) the pressure discharge path 48 of the position opening faced.And,, for example disposing pressure regulator valve 49 to the end that sucks path 41 openings at this pressure discharge path 48 midway, this pressure regulator valve 49 is that authorized pressure is opened pressure when above to sucking path 41 at the pressure of parking space 50d.Therefore, in this embodiment, the pressure of parking space 50 be set at the pressure of the working fluid that imports pressing chamber 15 and the pressure of the working fluid of discharging from pressing chamber 15 between intermediate pressure.This intermediate pressure preferably increases in the scope that can reduce the compression counter-force that Thrust ring 16 bears from rotary vortex rotary part 11, but when too large, produce the overturning phenomenon that rotary vortex rotary part 11 fascinates, therefore be set in the scope scope of 0.02～0.05MPa for example that does not produce this overturning phenomenon.

Need to prove, symbol 51 is illustrated in and loads on the converter circuit end plate 53 of the transducer containing room 52 that is contained in housing 2 tops and be used for carrying out the inverter drive circuit of the power supply control of motor 4.Transducer side wire harness 55 is connected with this inverter drive circuit 51 via cable 54, motor side wire harness 58 is connected with described stator 33 via cable 57, by being arranged on transducer side wire harness 55 on the relay terminal (airtight terminal) 56 at transducer containing room 52 rear portions that are arranged at housing 2 from the top, and, motor side wire harness 58 is arranged on relay terminal 56 from the below, be electrically connected to inverter drive circuit 51 and stator 33 via relay terminal 56, from 4 power supplies of 51 pairs of motor of inverter drive circuit.

Therefore, when motor 4 rotation and during live axle 8 rotation, rotary vortex rotary part 11 is rotated centered by eccentric shaft 8a in compressing mechanism 3, therefore, rotary vortex rotary part 11 is around the revolution of the axle center of fixed scroll member 10.At this moment, rotary vortex rotary part 11 stops mechanism's rotation to be prevented from by the rotation that is made of euclidean Ring 18, therefore only is allowed to carry out revolution motion.

Revolution motion by this rotary vortex rotary part 11, pressing chamber 15 reduces gradually its volume on one side from the outer circumferential side of scrollwork wall 10c, the 11c of two scroll elements to central side and moves on one side, therefore, the refrigerant gas that sucks pressing chamber 15 from suction chamber 26 is compressed, this compressed refrigerant gas is discharged to discharging chamber 28 via the tap hole 27 of the end plate 10a that is formed at fixed scroll member 10, then sends to outside refrigerant circuit via not shown exhaust port.

Isolate to a certain degree in this discharge chamber the lubricant oil that is in admixture to discharging the refrigerant gas of discharging chamber 28, this separated lubricant oil is supplied with via the keyway 25b of section of the pressure feed path 45 that is provided with aperture 46 to the Euclidean accommodation section 25 that is formed at block portion part 5 together with refrigeration agent, and imports the parking space 50 of the behind of rotary vortex rotary part 11.Afterwards, cut off parking space 50 and lead to another keyway 25c of section from a keyway 25b of section, emit to sucking path 41 via pressure regulator valve 49 from the pressure discharge path 48 that is arranged at another keyway 25c of section.

Therefore, periphery due to parking space 50 by making rotary vortex rotary part 11 and the end face of block parts 5 and Thrust ring 16 connect airtight and form, therefore, the oil of supplying with from pressing chamber 15 or the working fluid (refrigeration agent) that is mixed with oil can rest on this parking space 50, can supply with abundant oil to the slide part of euclidean Ring 18.Therefore, by carrying out reliably the lubricated of euclidean Ring, can guarantee the reliability of anti-rotation mechanism.

In addition, be arranged at the pressure regulator valve 49 of pressure discharge path 48 in the situation that reach more than the pressure that sets and opened, to sucking path 41(motor containing space 32) emit the medium that is stored in parking space 50, therefore, can utilize pressure regulator valve 49 to regulate the stop state of the medium in parking spaces 50, and can be with the pressure setting of parking space 50 at intermediate pressure.

Therefore, can utilize pressure regulator valve 49 to be adjusted in the oil mass that stops in parking space, and rotary vortex rotary part 11 is applied in intermediate pressure behind from it, therefore, can utilize the intermediate pressure reducing effect of parking space 50 in the compression counter-force of rotary vortex rotary part 11.

Namely, by regulating the cracking pressure of pressure regulator valve 49, can guarantee moving smoothly of euclidean Ring, and can reduce the load (slowing down the active force that rotary vortex rotary part 11 is pressed Thrust ring 16) that Thrust ring 16 bears in the scope that rotary vortex rotary part 11 does not go over, can reduce the wearing and tearing of slipping the position of rotary vortex rotary part 11 and Thrust ring 16.

In addition, according to above-mentioned formation, installed thrust ring 16 between fixed scroll member 10 and block parts 5, make rotary vortex rotary part 11 and these Thrust ring 16 butts, therefore, need to be for the back pressure that improves rotary vortex rotary part 11 cover the compression volume of fixed scroll member 10 with the end plate 11a of rotary vortex rotary part 11, thereby can dwindle the external diameter of rotary vortex rotary part 11, and then external diameter that can the compresses machine.

In addition, remain in euclidean Ring 18 between block parts 5 and Thrust ring 16 and cover Euclidean accommodation section 25, therefore can suppress rocking of euclidean Ring 18.

in addition, according to above-mentioned formation, the oil that is separated by pressing chamber or the refrigeration agent that is mixed with oil are supplied with via the keyway 25b of section of pressure feed path 45 to the Euclidean accommodation section 25 of accommodating euclidean Ring 18, be delivered to another keyway 25c of section via ring portion accommodation section 25a afterwards, after this discharge to sucking path 41 via pressure discharge path 48, therefore, forming energetically can be to euclidean Ring 18, slip part between rotary vortex rotary part 11 and Thrust ring 16, bearing 13 grades are supplied with the path of abundant oil, no matter thereby compressor state is set how, all can obtain good lubricating status.

Need to prove, in above-mentioned formation, separating oil naturally from be discharged to the refrigeration agent of discharging chamber 28, separated oil or the refrigeration agent that is mixed with oil are supplied with to parking space 50, separate but also can separately arrange the oil separator that is discharged to the oil in the refrigeration agent of discharging the chamber, to be stored in apotheca 31 by the oil that this oil separator separates, only oil be supplied with to parking space 50.

in addition, the example that the pressure of parking space is located at intermediate pressure has been shown in above-mentioned formation, but so long as can get final product by the consisting of of medium after the interior interim stop of parking space 50 is by the pressing chamber compression, can be also following formation: save pressure regulator valve 49 and utilize the passage resistance of pressure discharge path self to make medium stay in parking space temporarily from pressure discharge path 48, perhaps by saving pressure discharge path 48 and sealed member 21, via bearing 6 to sucking path 41 head pressures, near when utilization is by bearing 6 passage resistance temporarily stops medium.

In addition, the example that block parts 5 consist of as the parts that are fixed in housing has been shown, but block parts 5 also can be one-body molded with housing in above-mentioned formation.

Symbol description

1 motor compressor

2 housings

4 motor

5 block parts

8 live axles

10 fixed scroll member

11 rotary vortex rotary parts

The 11a end plate

The 11d recess

The 11f slip surface

15 pressing chambers

16 Thrust rings

18 euclidean Rings

The 18a ring portion

18b, 18c key section

11d, 25b keyway section

25 Euclidean accommodation sections

50 parking spaces

41 suck the path

28 discharge the chamber

45 pressure feed paths

48 pressure discharge paths

49 pressure regulator valves

Claims

1. Scrawl compressor, it possesses:

Fixed scroll member, in housing, its sense of rotation and axial movement are limited;

Live axle, its transmitting rotary power;

Rotary vortex rotary part, itself and described fixed scroll member in the face of and configure, and via eccentric shaft and the link of described live axle with respect to the axle center bias of described live axle, carry out thus revolution motion centered by the axle center of described live axle;

The block parts, the opposition side of the side of facing with described fixed scroll member that it is arranged on described rotary vortex rotary part, and the described live axle of axle supporting; And

Rotation preventing member, it is disposed between described rotary vortex rotary part and described block parts, a plurality of key section that possesses that a plurality of keyway section of can be slidably and forming engages on the described rotary vortex rotary part back side, and a plurality of key section that possesses that a plurality of keyway section of can be slidably and forming engages on described block parts and end face that described rotary vortex rotary part is faced, by make these keys sections respectively with the engaging of corresponding described keyway section, prevent the rotation of described rotary vortex rotary part;

Utilize the revolution motion of described rotary vortex rotary part, make the pressing chamber that is formed by described fixed scroll member and described rotary vortex rotary part reduce its volume and move to central side, thus compressed media;

Described Scrawl compressor is characterised in that,

The ring-type Thrust ring of described rotary vortex rotary part is born in clamping in the axial direction between described fixed scroll member and described block parts;

The whole circumference of the end face of the described rotary vortex rotary part that this Thrust ring can be slidably faces with described Thrust ring is connected airtight, and the end face of described Thrust ring and described block parts is connected airtight and be fitted into the position near radial outside than the keyway section that is formed at described block parts always;

Go out parking space by described rotary vortex rotary part, described Thrust ring and described block parts zoning, supply with by the medium after described pressing chamber compression to this parking space, and make this medium rest on this parking space.

2. Scrawl compressor as claimed in claim 1, is characterized in that,

By form recess on the back side of the end plate of described rotation vortex, form the ring-type slip surface that connects airtight with described Thrust ring, and this slip surface is not exposed from described Thrust ring.

3. Scrawl compressor as claimed in claim 1 or 2, is characterized in that,

The behind of the described fixed scroll member in described housing is formed with the discharging area of discharging the described medium that stays in described parking space,

Described discharging area and described parking space are via the pressure feed path connection that is formed with restriction midway.

4. Scrawl compressor as claimed in claim 3, is characterized in that,

Described parking space and being communicated with via the pressure discharge path to the suction path that described pressing chamber imports medium disposes pressure regulator valve midway at this pressure discharge path.

5. Scrawl compressor as claimed in claim 4, is characterized in that,

Described rotation preventing member is disposed at the Euclidean accommodation section that forms on described block parts, this rotation preventing member constitutes to have: ring portion, from this ring portion give prominence to and run through described Thrust ring and the paired key section that can be slidably engages with the paired keyway section that is formed at the described rotary vortex rotary part back side, to the radially two side-prominent and paired key sections that can be slidably engage with the paired keyway section that is formed at described block parts of described ring portion;

Described Euclidean accommodation section is communicated with by the ring portion accommodation section of accommodating described ring portion and with this ring portion accommodation section and the described paired keyway section that can engage slidably to the radially two side-prominent paired key sections of described ring portion is consisted of;

A keyway section in described pressure feed path and the described paired keyway section that is formed at described block parts is communicated with, and another keyway section in described pressure discharge path and the described paired keyway section that is formed at described block parts is communicated with.