CN101363432A

CN101363432A - Refrigerant compressor for motor vehicles

Info

Publication number: CN101363432A
Application number: CNA2008100949317A
Authority: CN
Inventors: 佩尔·卡奇马雷克; 艾克·希尔德布兰特; 冈特·迪特里希
Original assignee: BIZEL REFRIGERATION EQUIPMENT AG
Current assignee: BIZEL REFRIGERATION EQUIPMENT AG; Bitzer Kuehlmaschinenbau GmbH and Co KG
Priority date: 2003-11-17
Filing date: 2004-11-12
Publication date: 2009-02-11
Anticipated expiration: 2024-11-12
Also published as: DE10358471A1; PL1694964T3; CN101363432B; US20060216176A1; CN1882780A; EP1694964A1; ES2327531T3; BRPI0416682A; DK1694964T3; ATE434726T1; WO2005050019A1; CN100523499C; EP1694964B1; DE502004009671D1

Abstract

According to the invention, a refrigerant compressor for motor vehicles, comprising a compressor housing, at least two cylinder bores in the compressor housing, pistons, arranged in the cylinder bores, a driveshaft chamber, arranged in the compressor housing and a piston driveshaft, arranged in the driveshaft chamber, may be improved such as to operate with a minimum amount of lubricant, whereby, in the fitted position for the refrigerant compressor, the driveshaft chamber forms a collection chamber for lubricant in a region thereof at the lowest point in the direction of gravity and over but a part of the extent thereof. The driveshaft chamber comprises wall surfaces on the boundary of the collection chamber, which guide the lubricant accumulating in the driveshaft chamber into the collection chamber and a lubricant pump device removes the lubricant from the collection chamber and pumps the same to lubrication sites.

Description

The coolant compressor of automobile

The application is that the application number of submitting on November 12nd, 2004 is 200480033955.1, and name is called the dividing an application of Chinese invention patent application of " coolant compressor of automobile ".

Technical field

The present invention relates to a kind of coolant compressor of automobile, comprise a compressor case, at least two be arranged on cylinder-bore in the compressor case, be arranged on piston in the cylinder-bore, one be arranged on transmission shaft chamber in the compressor case and one and be arranged on the indoor piston drive axle of transmission shaft.

Background technique

This coolant compressor has disclosed from prior art.

Their problem is lubricated.

Address this problem by coolant compressor according to claim 1.

Further, known compressor needs a large amount of lubricant oil, obtains proper lubrication to guarantee all lubricant housings.

Yet use the shortcoming of lubricant oil to be in a large number, refrigeration agent is dissolved in a large amount of lubricant oil, and refrigeration agent is vaporized again when compressor start, therefore, because oil whip causes lubricated going wrong.

In addition, be dissolved in the greasy property variation that the interior refrigeration agent of lubricant oil causes lubricant oil.

Summary of the invention

Therefore purpose of the present invention is, the coolant compressor that starts described type is improved like this, makes this coolant compressor can utilize the least possible lubricants capacity to carry out work.

This purpose is achieved thus according to the present invention on a kind of coolant compressor that starts described type, promptly on the mounting point of coolant compressor, the transmission shaft chamber utilizes the collecting chamber that only extends by its a part of extension and be in minimum zone formation lubricant oil on gravitational direction.

Further embodiment is provided as, and the transmission shaft chamber has wall, and this wall connects collecting chamber and the lubricant oil of the indoor appearance of transmission shaft is transported to collecting chamber.

Another embodiment is provided as, and the lubricant oil feedway receives lubricant oil and is transported to the lubricant housings from collecting chamber.

Utilize the collecting chamber that only extends by a part of extension of transmission shaft chamber according to of the present invention, the possibility of existence is to reduce the needed lubricants capacity of function of lubricant oil feedway, and therefore, reduce and the relevant problem of known big lubricants capacity simultaneously.

A kind of useful especially solution is, wall is to be transported to collecting chamber with whole lubricant oil of the indoor appearance of transmission shaft basically, thereby guarantee that thus lubricant oil is not collected in the depression position that has by the collecting chamber, this lubricant oil can not be accepted by the lubricant oil feedway in these depression positions, but can cause strengthening required lubricants capacity.

A kind of solution that meets purpose especially is that the drive shaft axis tilt distribution of a part of wall and piston drive axle is so that reduce the extension of collecting chamber on the drive shaft axis direction thus.

A kind of useful especially solution is on the structure in this regard, the outer housing cover adjacency of collecting chamber and compressor case.

For simple assemble compressible machine shell, preferably, outer housing cover is provided with like this, makes the drive shaft axis vertical extent of itself and piston drive axle.

In order to collect the whole lubricant oil that occur in the compressor case by collecting chamber, the transmission shaft chamber is on the gravitational direction of compressor mounting point below the cylinder chamber of compressor case.

Cylinder chamber preferably also constitutes like this, the lubricant oil that its inside is occurred is enterprising substantially goes into the transmission shaft chamber, therefore and in cylinder chamber, do not constitute additional collecting chamber basically yet, these collecting chamber detention lubricant oil, and therefore strengthen lubricants capacity on the whole, and therefore to not improving according to the lubricated of coolant compressor of the present invention.

In principle, it is contemplated that wall and collecting chamber constitute by the inserting member that has in the compressor according in this solution of the present invention.

But a kind of useful especially solution is on the structure, and collecting chamber integrally constitutes in a propeller section of compressor case.

Same useful in addition is integrally to constitute wall from lubricant oil to collecting chamber that carry in propeller section.

A kind of useful especially solution is on the structure, and the propeller section of compressor case constitutes the groove to the collecting chamber inclination.

In order can be installed on the automobile without a doubt according to coolant compressor of the present invention, fact proved meet purpose especially be, collecting chamber drive shaft axis with respect to the mounting point maximum just/negative 35 °, particularly maximum just/be always propeller section under the situation of negative 15 ° inclination be positioned at the lowermost portion zone.

In addition, useful is, collecting chamber compressor case around the drive shaft axis of piston drive axle with respect to the mounting point maximum just/negative 90 °, particularly maximum just/collect lubricant oil all the time under the situation of negative 45 ° inclination.

Be not described in more detail up till now aspect the formation of lubricant oil feedway.In principle, it is contemplated that any lubricant oil feedway commonly used of use in this regard.

On its structure simple aspect a kind of useful especially solution be that the lubricant oil feedway comprises a lubricant oil back-up ring that embeds in the collecting chamber.

This lubricant oil back-up ring can be by suitable transmission device transmission.A kind of solution that meets purpose especially is that the lubricant oil back-up ring is by piston drive shaft drive.

Especially simply be that the piston drive axle carries the lubricant oil back-up ring on the structure.

Aspect being provided with of lubricant oil back-up ring, be not described in more detail up till now.For the reason of overall plan, fact proved that what meet purpose is that the lubricant oil back-up ring is provided with near the nearest compressor case of collecting chamber lid with advantage.

The lubricant oil back-up ring is preferred to be provided with like this, and its perpendicular on the mounting point is distributed.

The lubricant oil feedway has under the situation of lubricant oil back-up ring and is provided with like this, makes it preferably have the collecting chamber that is used for the lubricant oil that thrown away by the lubricant oil back-up ring in compressor case.

For the lubricant oil of annotating to collecting chamber, preferred collecting chamber is provided with like this, makes to get rid of to collection surface with from the lubricant oil that this collection surface flows down to enter this collecting chamber.

In principle, it is contemplated that collection surface and collecting chamber are arranged on any suitable position of compressor case.

A kind of solution that has advantage especially is that collecting chamber is arranged in the outer housing cover.

In addition, another solution with advantage is that collection surface is arranged on the outer housing cover.

In order will to be imported better by the lubricant oil that collection surface is collected in the collecting chamber, preferred lubricant oil feedway has lubricant oil is imported guiding rib in the collecting chamber.

At least a portion that lubricant oil is transported to the lubricant housings for example can be undertaken by the passage that has in the compressor case.

But a kind of useful especially solution is that the lubricant oil feedway comprises one and the incorporate servo-lubrication oil of piston drive axle passage.This servo-lubrication oil passage by the piston drive axle can be especially simply to each lubricant housings supplying lubricating oil of this piston drive axle.

Can carry from collecting chamber under the lubricated oil condition at servo-lubrication oil passage, the lubricant oil of servo-lubrication oil passage is supplied with and can structurally be realized especially simply.In this regard, useful especially is, the collecting chamber end face directly with piston drive axle adjacency, and so grease channel directly feed in the collecting chamber.

For each lubricant housings of supplying with the piston drive axle fact proved that what meet purpose is that servo-lubrication oil passage has the lubricant oil supply passage that perpendicular distribution is used for piston drive axle lubricant housings.

This and the lubricant oil supply passage grease channel vertical distribution has improved the lubricant oil conveying, this be because, because the rotation of piston drive axle, the lubricant oil of centrifugal action in being in the lubricant oil supply passage, and centrifugal force radially is transported to separately lubricant housings with lubricant oil and servo-lubrication oil passage, thereby produces pump action thus.

Aspect the overall oil filling amount that exists on the coolant compressor of the present invention, be not described in more detail up till now.Adding amount makes its twice less than the coolant compressor displacement reducing like this according to having advantage ground in the solution of the present invention.

What more have advantage is that the adding amount of lubricant oil is less than 1.5 times of the coolant compressor displacement.

As to the embodiment's that introduced up till now selection or replenish, start described purpose and also be achieved thus according to the present invention, be i.e. the sliding layer that the piston drive axle only is bearing on the sliding bearing in compressor case and sliding bearing has low lubricity by a kind of coolant compressor that starts described type.

Because the sliding layer of this low lubricity, possible is the adding amount that reduces lubricant oil as far as possible, even can interrupt the conveying of lubricant oil on time, and can not occur in the zone of sliding bearing damaging.

In addition, the advantage of sliding bearing is that sliding bearing has with respect to vibration, the stability of the vibration of particularly stopping.

In order also to hang down the lubricity formation, utilize the driving component of sliding supported condition piston on the preferred piston drive axle with low lubricity sliding layer according to other lubricant housings in this solution of the present invention.

For example can be on the piston drive axle, the sliding layer that has this low lubricity on its eccentric body for example.

But useful especially is to have the sliding layer of low lubricity on driving component.

This driving component for example is a connecting rod, has this sliding layer in it is bonded on connecting rod eye on the piston drive axle.

In addition, preferred driving component utilization has the sliding supported condition of low lubricity sliding layer on piston.

In this case, sliding layer that for example also can wrist pin has this low lubricity when connecting rod is used as driving component.

But, be to be bonded on the sliding layer that the connecting rod eye on the wrist pin has low lubricity in a kind of solution that meets purpose of manufacture view.

The guiding of piston also needs to lubricate usually.

But,, on the cylinder surface of contact, guide to the low equally lubricity of piston according in this solution of the present invention.

This low lubricity ground guiding of piston for example can realize thus that promptly the cylinder surface of contact has the sliding layer of low lubricity.

The solution that meets purpose on a kind of structure is, piston has the piston ring of low lubricity, and piston can directly move on the cylinder surface of contact then.

It is contemplated that piston, the sliding layer that particularly on piston skirt, has low lubricity as additional or selection to this.

Have in piston guide under the sliding layer situation of this low lubricity, make following further formation according to coolant compressor of the present invention with can having advantage, promptly no cylinder liner ground guides piston on compressor case on this coolant compressor, just directly guides piston in the cylinder-bore in compressor case basically.

Low lubricity sliding layer itself describes in detail with getting in touch no longer of each embodiment who is introduced up till now.

The sliding layer of low lubricity be meant in this regard on this sliding layer can regular interruption lubricant oil lubricated, and in sliding bearing zone separately, can not occur damaging.Under extreme case, the sliding layer of low lubricity constitutes like this, makes it have dried maneuverability, just is applicable to the bearing structure of unlubricated oil of long period.

A kind of formation that has advantage especially of this low lubricity sliding layer is that this sliding layer comprises PTFE, just teflon.

In addition, the sliding layer of this low lubricity can improve thus, promptly fills in the PTFE and improves for example CaF of its stable additive.

Another solution with advantage is that the sliding layer of low lubricity comprises the porous layer of the sintered bronze that has good low lubrication property equally.

A kind of useful especially solution is to fill PTFE in the porous layer of sintered bronze.

Be not described in more detail getting in touch down aspect the piston drive shaft drive with up till now embodiment.Therefore usefully especially concerning the bearing structure setting of piston drive axle be, the piston drive axle can be subjected to the transverse force of back flow side by transmission, just with the power of drive shaft axis transversal orientation, because the design of the bearing structure of piston drive axle needn't be considered this transverse force thus.

In this regard, useful especially is, the piston drive axle can pass through the clutch transmission, and wherein, clutch preferably constitutes as magnetic clutch.

About the transmission device of clutch, this clutch can pass through the driving component transmission.

For avoiding transverse force being imported on the piston drive axle by this clutch, the driving component of preferred clutch is bearing on the compressor case by rolling bearing aspect that at it.Therefore all transverse forces that act on driving component all act on compressor case by rolling bearing, but mainly act on the piston drive axle with the degree of obvious reduction.

Driving component can be the driving component of any kind of clutch.For example it can be the drive wheel of clutch, can for example be driving gear also.

A kind of in particular for the selectable mode of the driving component that uses on automobile, driving component is a belt pulley, wherein, occurs transverse force with obvious degree according to belt tension.

Description of drawings

Other features and advantages of the present invention are the theme that the following describes book and illustrate an embodiment's accompanying drawing.

Wherein:

Fig. 1 illustrates the longitudinal section according to coolant compressor embodiment of the present invention;

Fig. 2 illustrates along the section of Fig. 1 line segment 2-2;

Fig. 3 illustrates along the section of Fig. 1 line segment 3-3;

Fig. 4 illustrates the sliding layer section of packing into according in the coolant compressor bearing portion of the present invention;

Fig. 5 illustrates along the section of Fig. 1 line segment 5-5;

Fig. 6 illustrates the perspective view of outer housing cover shown in Figure 5;

Fig. 7 illustrates along the section of Fig. 5 line segment 7-7;

Fig. 8 illustrates along Fig. 3 line segment 8-8 around the part enlarged view in the piston drive axle zone;

Fig. 9 illustrates along the section of Fig. 2 line segment 9-9; And

Figure 10 is along the section of Fig. 2 line segment 10-10.

Embodiment

The embodiment who is used for the coolant compressor of automobile according to the present invention shown in Figure 1 comprises the whole compressor cases that adopt 10 marks, and this shell comprises housing 12, and this housing utilizes 16 sealings of second outer housing cover utilizing on the one side on first outer housing cover 14 and the opposing side.

Compressor case 10 can be divided into the cylinder section 20 that for example comprises two cylinder seats 22 and 24 (Fig. 2) on the whole and be in propeller section 26 below the cylinder section 20 on the Vertical direction of mounting point, and the inside can be around the whole piston drive axles 30 that adopt 30 marks of drive shaft axis 32 rotating supports.

In this regard, piston drive axle 30 is bearing in the zone of the clutch shaft bearing position 34 and second bearing portion 36, and it is interior near on the face of outer housing cover 14 that this clutch shaft bearing position is arranged on frame 12, and this second bearing portion is arranged on second outer housing cover 16.

Bearing portion 34 by preferably on frame 12 first annular solid 40 of global formation constitute, pack into and have first sliding bearing sleeve 42 of low lubricity sliding layer 44 in the inside, wherein, piston drive axle 30 utilizes the outer surface that constitutes as first slip surface 45 slidably to be bearing on the sliding bearing sleeve 42.First slip surface 45 is in first supporting section 46 of piston drive axle 30 in this regard.

Second bearing portion 36 is made of second annular solid 50 of global formation on second outer housing cover 16.Being in second annular solid 50 is second sliding bearing sleeve 52 with low lubricity sliding layer, and piston drive axle 30 utilizes second supporting section 56 of piston drive axle 30 to be bearing on the sliding layer as the outer surface that second slip surface 55 constitutes.

Piston drive axle 30 for example has first eccentric body 60 and second eccentric body 62 at it aspect that, wherein, at first eccentric body, 60 upper support first connecting rods 64 and second connecting rod 66, and on second eccentric body rotatable support third connecting rod 68 and the 4th connecting rod 70.

As shown in Figure 2, the piston 80 of third connecting rod 68 transmission cylinder seats 24 for example, and the piston 80 of the 4th connecting rod 70 transmission cylinder seats 22.

In the same manner, the piston of the piston of first connecting rod 64 transmission cylinder blocks 24 and second connecting rod 66 transmission cylinder blocks 22.

Each connecting

rod

64,66,68,70 utilizes its big connecting rod eye 82 to be bearing on separately the eccentric body 60,62 in the mode of sliding bearing, and separately the small rod eye 84 of connecting rod by wrist pin 86 rotatable support on piston 80 separately.

In this regard, the bearing structure of small rod eye 84 also constitutes as sliding bearing on wrist pin 86.

The sliding layer 88 that preferred big connecting rod eye 82 and small rod eye 84 have low lubricity separately.

As shown in Figure 2, each piston 80 is by the guiding in the cylinder surface of contact 100 of cylinder-bore 98 movably from its that aspect, and exactly preferably at least by piston ring 102 guiding, this piston ring is 106 settings at the bottom of the close piston in piston skirt 104.In addition, piston 80 effectively separately is outer surface 108 channeling conducts by piston skirt 104 also, and this piston skirt is arranged on piston ring 102 and the 106 relative faces at the bottom of the piston.

Piston ring 102 preferred formations like this make its outer surface 110 that slides on cylinder surface of contact 100 be made of the material that comprises PTFE, and wherein, for example 100 conducts of cylinder surface of contact are made of the aluminium outer surface of the processing of the frame 12 of cast aluminium manufacturing and particularly sclerosis.

In addition, for example the outer surface 108 of piston skirt 104 also has the sliding layer 112 that comprises PTFE.

Comprise that by piston ring 102 utilizations the described formation of PTFE outer surface 110 and slip surface 112 have the material that comprises PTFE, piston 80 also low on the whole lubricity ground guiding in cylinder-bore 98.

Cylinder-bore 98 then at it aspect that also by valve plates 116 sealing, being on the valve plates is the valve that does not illustrate among the figure, this valve covers from its aspect by cylinder head 118.

The transmission of piston drive axle 30 is undertaken by the transmission section 120 of piston drive axle 30, this transmission section is stretched on the face relative with second bearing portion 36 at clutch shaft bearing position 34 and by this facing epitaxy, this transmission section is passed slip ring seal 122 from its that aspect, and the latter is arranged in the lug boss 126 of formation slip ring closed chamber 124 of first outer housing cover 14.

On the end section 128 that piston drive axle 30 protrudes from compressor case 10 by slip ring seal 122, the clutch plate 130 of the magnetic clutch of overall employing 132 marks is set, wherein, the clutch that cooperates by flexible ring 136 sections of remaining on and hold 128 of clutch plate 130 is from Moving plate Grains 138.

In addition, but magnetic clutch 132 comprises the belt pulley 140 of a transmission, and it passes through rolling bearing 142 rotatable support on the lug boss 126 of first outer housing cover 14 from its that aspect.

Belt pulley 140 also comprises a ring segment 144, and clutch plate 130 reasonably is close in friction above, exactly is on ring segment 144 and clutch plate 130 opposing sides by being arranged on belt pulley 140 and fixedly remains on electromagnet 146 on the lug boss 126.

Energising by electromagnet 146, clutch plate 130 is pulled to and the ring segment 144 of reasonably being close to belt pulley 140 that rubs is also driven by the belt pulley 140 of transmission thus, wherein, act on the one-sided of belt pulley 140 by belt transmission generally and accept by the rolling bearing 142 of belt pulley 140 with the power of drive shaft axis 32 transversal orientations.

The transmission of the transmission section 120 of piston drive axle 30 is carried out from Moving plate Grains 138 by flexible ring 136 and clutch by clutch plate 130, and be not subjected to the outside transverse force that particularly produces, thereby particularly in the zone at clutch shaft bearing position 34, also need not to accept this transverse force by belt transmission.

By piston drive axle 30 and the unique transverse force that therefore will accept by bearing portion 34 and 36 from the transmission of piston 80 by connecting

rod

64,66,68,70.

Amplification illustrates as Fig. 4, sliding layer 44,54 constitute like this, make its supporting mass with steel 150, the porous layer 152 of sintered bronze is set above, wherein, for example the material 156 that comprises PTFE (teflon) and additive is filled in roll extrusion in the hole of sintered bronze layer 152 or space 154, thereby at this sliding layer 44, there are sintered bronze and the porous layer 152 that comprises that PTFE material 156 is formed on 54 the slidingsurface 158, they are low lubricity of common formation or dried roadability at least on time on slidingsurface 158, thereby is close to this lip-deep slip surface 45 separately, even unlubricated oil of 55 quite a whiles does not have wearing and tearing ground basically by slidingsurface 158 or guiding and supporting on slidingsurface 158 yet.

Preferably, not only there is inner link in this structure of low lubricity or dried maneuverability slidingsurface 158 with sliding layer 44 and 54, and also constitutes as sliding layer 88 in the zone of the big connecting rod eye 82 of connecting

rod

64,66,68,70 separately and small rod eye 84 and preferably constitute in the formation of the sliding layer on piston skirt 104 112 and piston ring 102.

Although the sliding layer 44,54,88,112 and the piston ring 102 that on foundation compressor of the present invention, have low lubricity, but this compressor also uses lubricant oil work, and this lubricant oil is transported to each sliding bearing by means of lubricant oil feedway 160 to small part in compressor case 10.

Lubricant oil feedway 160 comprises lubricant oil back-up ring 162, and it and drive shaft axis 32 coaxially can be in company with 30 rotations of piston drive axle.For this reason, lubricant oil back-up ring 162 remain on the disequilibrium regulating body 164 of piston drive axle 30 and be in second outer housing cover 16 near, wherein, lubricant oil back-up ring 162 is around the outer surface (Fig. 1) of second bearing portion 36 integrally formed annular solid 50 on second outer housing cover 16.

Lubricant oil back-up ring 162 is in this regard in the floodlubrication oil sump 166, this pond constitutes in the inside of compressor case 10 and lubricant oil is got rid of inboard 168 to second outer housing cover 16 from lubricating oil bath 166, wherein, inboard 168 have and the radially-arranged rib 170 (Fig. 5 of transmission shaft, 6,7), the collection surface 172 that moves after between them, relatively being provided with rib 170, these collection surfaces and the rib 170 common collection cavitys 174 that in second outer housing cover 16, constitute the depression embedding, wherein, collection cavity 174 only is between the rib 170, and rib is extending on piston drive axle 30 with Vertical direction on the mounting point of coolant compressor.By lubricant oil back-up ring 162 get rid of in the collection cavity 174 lubricant oil in this regard to small part attached on the collection surface 172 and motion on collection surface 172, and on the direction of piston drive axle 30, guide according to gravity by rib 170 when needed.

Collection surface 172 extends to the collecting chamber 176 of lubricant oil in this regard always, and as appreciable from Fig. 1 and Fig. 7, this collecting chamber opens wide near the end face 178 of piston drive axle and to this end face in second outer housing cover 16 and is provided with.

End face 178 from piston drive axle 30, to oily passage 180 of the servo-lubrication with drive shaft axis 32 coaxial distributions of this inner extension, exactly preferably from end face 178 until in the transmission section 120, wherein, branch out and drive shaft axis 32 radially-arranged lubricant oil supply passages from grease channel 180.

This point for example is the lubricant oil supply passage 182 and 184 that has in the clutch shaft bearing section 46 and the second bearing section 56, they have the feeding mouth 186,188 that is in slip surface 45 or 55, feed mouth by these slip surface 45 on sliding layer 44,54 of sliding bearing sleeve 42 or 52 or 55 sliding bearing structure are lubricated.

In addition, preferably also branch out lubricant oil supply passage 190,192,194 and 196 from central grease channel 180, their each leisures are in the feeding mouth 210,212,214,216 on connecting

rod

64,66,68,70 slip surfaces 200,202,204,206, are used to lubricate the big connecting rod eye 82 (Fig. 1) of each connecting

rod

64,66,68,70 that utilizes its sliding layer 88 sliding bearings on slip surface 200,202,204,206.

The lubricant mist that lubricates by being produced by lubricant oil back-up rings in the compressor case 10 162 in piston ring 102 zones of the sliding layer 88 of small rod eye 84 and sliding layer 112 and piston 80 carries out.

At last, also branch out a lubricant oil supply passage 220, be used to supply with slip ring seal 122 lubricant oil from central grease channel 180.

In addition, as shown in Figure 1, slip ring seal chamber 124 constitutes in lug boss 126 like this, make this indoor collection and block the lubricant oil of discharging from slip ring seal 122, wherein, preferred whole slip ring seal 122 immersions are arranged in the lubricant oil of retaining in slip ring seal chamber 124 and make lubricant oil leave slip ring seal chamber 124 by the overflow ducts 222 that is arranged on above first annular solid 40.

The lubricant oil of discharging by slip ring seal 122 is collected in as shown in Figure 8 in the space 125 between slip ring seal 122 and the outside shaft seal 123 and by passage 218 and is transported to cavity 219.

By the cylinder section 20 of compressor case 10 around cylinder chamber 224 inner and by propeller section 26 around the transmission shaft chamber 226 inner whole lubricant oil that occur be collected in the groove 228 that constitutes by propeller section 26 according to gravity, wherein, cylinder chamber 224 and the 226 staggered transition of transmission shaft chamber, this groove as shown in Figure 1 extending until the direction of second outer housing cover 16 from the side at clutch shaft bearing position 34 on the direction of drive shaft axis 32 and with direct connection of second outer housing cover 16 under constitute a collecting chamber 230, collected inside is used to constitute the lubricant oil of lubricating oil bath 166.In this regard, preferred geosyncline 228 tilts to the direction of collecting chamber 230 together with its wall 232 and bottom surface 234, so that whole lubricant oil that will enter in the groove 228 arrive collecting chamber 230 according to gravity transfer.

The lubricant oil that overflows from the overflow ducts 222 of slip ring seal chamber 124 also enters in the groove 228 around first annular solid 40 and is transported to collecting chambers 230 in this regard.In addition, the lubricant oil of collecting in the cavity 219 also is transported to transmission shaft chamber 226 by passage 236.

Collecting chamber 230 preferred formations like this, make lubricant oil that its inside is used to constitute lubricating oil bath 166 drive shaft axis with respect to desirable mounting point maximum just/negative 35 °, preferred maximum just/negative 15 ° when Vertical direction tilts, perhaps compressor case around drive shaft axis 22 with maximum just/negative 90 °, preferred maximum just/negative 45 ° when rotating with respect to best position, still also can be thrown in the collection cavity 174 by 162 controls of lubricant oil back-up ring.

Because carrying lubricant oil simultaneously, so this lubricant oil of carrying simultaneously to small part is also carried again by the refrigeration agent that sucks according in the refrigeration agent of the present invention.

For example the refrigeration agent that enters in the compressor case by gas-entered passageway 240 is also carried lubricant oil, and this lubricant oil has been deposited in the central air induction passage 240 and has entered then in the branched bottom 242,244 that leads to

cylinder seat

22,24.

These branched bottoms 242,244 from their aspects particularly as Fig. 2 with shown in Figure 7ly have a collecting area 246,248, lubricant oil enters in the cylinder chamber 224 and is transported to grooves 228 therefrom from collecting area by discharge route 250,252, thereby also can be collected in collecting chamber 230 by the lubricant oil that refrigeration agent is transported to coolant compressor again.

At last, refrigerant compressed flows in the central pressurized gas passage 260 by branched bottom 256,258 in coolant compressor, sets out therefrom and discharges (Fig. 3,9) by pressurized gas connecting line 262 from compressor case 10.

Heat insulation for making with respect to cylinder-bore 98 and gas-entered passageway 240 by the central pressurized gas passage 260 of hot compressed gas heating, the hollow outer shell cavity 270 of moulding in frame 12, they only are connected by pressure equalisation passage 272 with cylinder chamber 224, in these outer shell cavities, there is not eddy current basically thereby make, particularly static gas shape medium thermal insulation (Fig. 9,10).

Claims

1. the coolant compressor of automobile comprises

A compressor case (10),

At least two cylinder-bore (98) that are arranged in the compressor case (10),

Be arranged on the piston (80) in the cylinder-bore (98),

A transmission shaft chamber (226) that is arranged in the compressor case (10),

A piston drive axle (30) that is arranged in the transmission shaft chamber (226),

It is characterized in that, transmission shaft (30) is through the sliding seal (122) in first outer housing cover (14) that is located at compressor case (10), described outer housing cover (14) forms slip ring closed chamber (124), space (125) is located between slip ring seal (122) and the external shaft Sealing (123), the lubricant oil by slip ring seal (122) is collected in described space (125), and, described space (125) is connected to cavity (219) by passage (218), supplies to described cavity (219) with the lubricant oil that will be collected in described space (125).

2. by the described coolant compressor of claim 1, it is characterized in that, in the mounting point of coolant compressor, transmission shaft chamber (226) utilize the collecting chamber (230) that only extends by a part of extension of transmission shaft chamber and be in minimum zone formation lubricant oil on gravitational direction.

3. by the described coolant compressor of claim 2, it is characterized in that transmission shaft chamber (226) have the wall (232,234) in abutting connection with collecting chamber (230), described wall is transported to collecting chamber (230) with the lubricant oil of accumulation in transmission shaft chamber (226).

4. by one of aforementioned claim described coolant compressor, it is characterized in that lubricant oil feedway (160) receives lubricant oil and is transported to lubricant housings (44,54,88,112,102) from collecting chamber (230).

5. by one of aforementioned claim described coolant compressor, it is characterized in that wall (232,234) is transported to collecting chamber (230) with whole lubricant oil of accumulation in transmission shaft chamber (226) basically.

6. by one of aforementioned claim described coolant compressor, it is characterized in that some walls (234) extend obliquely with respect to the drive shaft axis (32) of piston drive axle (30).

7. by one of aforementioned claim described coolant compressor, it is characterized in that outer housing cover (16) adjacency of collecting chamber (230) and compressor case (10).

8. by the described coolant compressor of claim 7, it is characterized in that outer housing cover (16) vertically extends with the drive shaft axis (32) of piston drive axle (30).

9. by the described coolant compressor of one of aforementioned claim, it is characterized in that transmission shaft chamber (226) are in below the cylinder chamber (224) of compressor case (10) on gravitational direction in the mounting point of compressor.

10. by the described coolant compressor of claim 9, it is characterized in that cylinder chamber (224) constitutes like this, make that the lubricant oil of its inside accumulation is enterprising substantially goes into transmission shaft chamber (226).

11., it is characterized in that collecting chamber (230) integrally constitutes by one of aforementioned claim described coolant compressor in a propeller section (26) of compressor case (10).

12. by one of aforementioned claim described coolant compressor, it is characterized in that, in propeller section (26), integrally constitute wall from lubricant oil to collecting chamber (230) that carry.

13., it is characterized in that the propeller section (26) of compressor case (10) constitutes the groove (228) to collecting chamber (230) inclination by claim 11 or 12 described coolant compressors.

14. by the described coolant compressor of one of aforementioned claim, it is characterized in that, collecting chamber (230) drive shaft axis (32) with respect to the mounting point maximum just/be always the lowermost portion zone of propeller section (26) in negative 35 ° the inclination.

15. by one of aforementioned claim described coolant compressor, it is characterized in that, collecting chamber (230) compressor case (10) around the drive shaft axis (32) of piston drive axle (30) with respect to the mounting point maximum just/collect lubricant oil all the time in negative 90 ° the inclination.

16., it is characterized in that lubricant oil feedway (160) comprises a lubricant oil back-up ring (162) that embeds in the collecting chamber (230) by one of aforementioned claim described coolant compressor.

17., it is characterized in that lubricant oil back-up ring (162) is by piston drive axle (30) transmission by the described coolant compressor of claim 16.

18., it is characterized in that piston drive axle (30) carries lubricant oil back-up ring (162) by the described coolant compressor of claim 17.

19., it is characterized in that lubricant oil back-up ring (162) is close to be provided with from the nearest compressor case lid (16) of collecting chamber (230) by one of claim 16-18 described coolant compressor.

20., it is characterized in that lubricant oil back-up ring (162) substantially perpendicularly extends by one of claim 16-19 described coolant compressor on the mounting point.

21., it is characterized in that lubricant oil feedway (160) has the collecting chamber (176) that is used for the lubricant oil that thrown away by lubricant oil back-up ring (162) by the described coolant compressor of one of claim 16-20.

22., it is characterized in that collecting chamber (176) is provided with like this, makes to get rid of to collection surface (172) with from the lubricant oil that this collection surface flows down to enter described collecting chamber by the described coolant compressor of claim 21.

23., it is characterized in that collecting chamber (176) is arranged in the outer housing cover (16) by claim 21 or 22 described coolant compressors.

24., it is characterized in that collection surface (172) is arranged on the outer housing cover (16) by one of claim 21-22 described coolant compressor.

25., it is characterized in that lubricant oil feedway (160) has lubricant oil is imported guiding rib (170) in the collecting chamber (176) by the described coolant compressor of one of claim 22-24.

26., it is characterized in that lubricant oil feedway (160) comprises the servo-lubrication oil passage (180) that is integrated in the piston drive axle (30) by one of aforementioned claim described coolant compressor.

27., it is characterized in that servo-lubrication oil passage (180) can transfer out lubricant oil from collecting chamber (176) by the described coolant compressor of claim 26.

28. by claim 26 or 27 described coolant compressors, it is characterized in that, servo-lubrication oil passage (180) has the lubricant oil supply passage (182,184,190,192,194,196,220) of the lubricant housings that is used for piston drive axle (30), and described supply passage and described grease channel vertically extend.

29., it is characterized in that the oil filling amount in the coolant compressor is less than the twice of the volume of coolant compressor by one of aforementioned claim described coolant compressor.

30., it is characterized in that the adding amount of lubricant oil is less than 1.5 times of the volume of coolant compressor by the described coolant compressor of claim 29.

31. by one of claim 1 preamble or aforementioned claim described coolant compressor, it is characterized in that, piston drive axle (30) only is installed on the sliding bearing in compressor case (10), and sliding bearing has the sliding layer (44,54) of low lubricity.

32. by the described coolant compressor of claim 31, it is characterized in that, go up the driving component (64,66,68,70) that utilizes sliding bearing that piston (80) is installed at piston drive axle (30) with low lubricity sliding layer (88).

33., it is characterized in that driving component (64,66,68,70) is utilized the sliding bearing with low lubricity sliding layer (88) and is installed on the piston (80) by claim 31 or 32 described coolant compressors.

34., it is characterized in that piston (80) is directed on cylinder bearing face (100) in the mode of low lubricity by one of claim 31-33 described coolant compressor.

35., it is characterized in that piston (80) has the piston ring (102) of low lubricity by the described coolant compressor of claim 34.

36., it is characterized in that piston (80) has the sliding layer (112) of low lubricity by claim 34 or 35 described coolant compressors.

37., it is characterized in that piston (80) is directed under without any the situation of cylinder liner on compressor case (10) by claim 34 or 36 described coolant compressors.

38., it is characterized in that the sliding layer (44,54,88,112) of low lubricity comprises PTFE by one of claim 31-37 described coolant compressor.

39. by the described coolant compressor of claim 38, it is characterized in that, fill in the PTFE and improve its stable additive.

40., it is characterized in that the sliding layer (44,54,88,112) of low lubricity comprises the porous layer of being made by sintered bronze (152) by one of claim 31-39 described coolant compressor.

41. by the described coolant compressor of claim 40, it is characterized in that, fill PTFE in the porous layer of making by sintered bronze (152).

42., it is characterized in that piston drive axle (30) can be subjected to the transverse force of back flow side by transmission by one of aforementioned claim described coolant compressor.

43., it is characterized in that piston drive axle (30) can pass through clutch (132) transmission by the described coolant compressor of claim 42.

44., it is characterized in that clutch (132) can pass through driving component (140) transmission by the described coolant compressor of claim 43.

45., it is characterized in that driving component (140) is installed on the compressor case (10) by rolling bearing (142) from its that aspect by the described coolant compressor of claim 44.

46., it is characterized in that cavity (219) is integrated in the shell (10) by one of aforementioned claim described coolant compressor.