CN108071591A - Coolant compressor - Google Patents
Coolant compressor Download PDFInfo
- Publication number
- CN108071591A CN108071591A CN201711080780.5A CN201711080780A CN108071591A CN 108071591 A CN108071591 A CN 108071591A CN 201711080780 A CN201711080780 A CN 201711080780A CN 108071591 A CN108071591 A CN 108071591A
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- Prior art keywords
- mentioned
- insulating element
- crank axle
- bearing
- hole
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with or adaptation to specific driving engines or motors
Abstract
The damage of the bearing caused by galvano-cautery is generated in the bearing of the shaft supporting part of compressor.Insulating element between axis and bearing is set as countermeasure, but since the strength of materials of insulating element is weaker than metal, so generating abrasion powder due to the abrasion of insulating element, there is the problem of damage of the bearing.To solve the above subject, the compressor of the present invention possesses the compressor means portion of compression refrigerant, generate the motor part of power, the power of the motor part is transferred to the crank axle of above-mentioned compressor mechanism part, and it is freely and rotatably supported the bearing of the crank axle, the insulating element of substantially circular tube shaped is configured between above-mentioned crank axle and above-mentioned bearing, there is the axis fixed part with the fastening of above-mentioned crank axle in the inner circumferential side of the insulating element, the long-pending oil space for accumulating the lubricating oil come from the oil supplying hole supply of above-mentioned crank axle is formed in the peripheral side of the insulating element, above-mentioned crank axle is synchronous with above-mentioned insulating element, above-mentioned insulating element and above-mentioned bearing slidably rotate.
Description
Technical field
The present invention relates to the coolant compressors of use in refrigeration system.
Background technology
For freezing air conditioner equipment, it is necessary to tackle the obtained energy-saving of raising with annual energy consumption efficiency (APF).In order to
Realize the purpose, for the pattern of coolant compressor used in freezing air conditioner equipment, to Permanent Magnet motor into
The mode of row inverter control becomes mainstream.In addition, in recent years, corresponding, the compressor operation as the requirement with rapid cooling
Condition to high rotating speed, high load capacity expand, thus there are driven compressor electric current compared to usually operating when electric current and it is increased become
Gesture.
Because of the increase of the driven compressor electric current, the electric current of motor is flowed to crank axle, and flow direction support is bent from there
The bearing of arbor generates electric discharge phenomena, so that the galvano-cautery of damage of the bearing increases in the Internal and external cycle of bearing and the gap of rolling element
Add.Moreover, as the countermeasure, known in the method that the higher material of insulating properties is assembled between crank axle and bearing portion.
For example, it in patent document 1, is disclosed in Fig. 8, the 0041st section：It " in the present embodiment, is supported as axis
The inner ring 50a in portion 50, rolling element 50b, outer ring 50c any one or combination are configured to the ceramics or inside as insulator
50a, rolling element 50b, outer ring 50c is enclosed to form ceramic membrane or form the higher resin coating such as PPS (polyphenylene sulfides of insulating properties
Ether) resin film, cuts off from the crank axle 51 at shaft supporting part and by the electric current of shaft supporting part 50.It is supported by combining the axis
The structure on portion periphery and the structure that the neutral point of each three-phase is connected to each other to line, to prevent displacement type compressor in a effective manner
Shaft current increases.In addition, the envelope higher as the peripheral side clamping insulating properties in shaft supporting part 50, the structure of sheet material,
It can obtain identical effect.”.
Also, it in patent document 2, is disclosed in Fig. 5, the 0033rd, 0039 section：" as described above, implementing according to first
Mode, rotation axis 5 and ground connection between potential difference be divided into bearing 3 parasitic capacitance Cb and across insulator 41 and parasitism post
Raw capacitance Ci.Thus, it is possible to reduce the potential difference for being applied to bearing 3, and then the galvano-cautery of bearing 3 can be reduced.Moreover, because
Rotation axis 5 can use metal axis, so excellent strength.”；" moreover, in the first embodiment, insulator 41 is arranged on
32 side of outer ring, and insulator 42 is arranged on 31 side of inner ring in this second embodiment, this point is different, the area phase in bearing inner race face
It is fully smaller than outer ring face, thus according to the thickness required by the insulator 41 made arranged on outer ring 32 be arranged on the exhausted of 31 side of inner ring
The thickness of edge body 42 can then make the electrostatic capacitance of insulator 42 fully small, can act as identical with first embodimently
With.”.
Using these methods, the electric current for flowing to bearing portion can be reduced, can prevent galvano-cautery.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2011-259646 publications
Patent document 2：Japanese Unexamined Patent Publication 2008-263698 publications
The content of the invention
Problem to be solved by the invention
However, in the case of the resin material for having used insulating properties higher in bearing, because of the crank axle of metal material and strong
It spends the slip of weaker resin material and generates the abrasion of resin material, and have generation pressure due to the abrasion powder of resin material
The possibility of the damage of compressor parts.Also, in the case of the ceramic material for having used insulating properties higher in bearing, there is bearing
The problem of manufacture cost significantly rises.
It is an object of the present invention to provide following reliability higher compressor with low cost, i.e., can inhibit in order to anti-
The only galvano-cautery of parts of bearings and the abrasion caused by the slip of insulating element that sets, can inhibit the damage of bearing.
The solution to the problem
In order to solve above-mentioned problem, coolant compressor of the invention uses such as lower structure, possesses：Compressor means
Portion compresses refrigerant；Motor part generates power；The power of the motor part is transferred to above-mentioned compression by crank axle
Machine mechanism part；And bearing, the crank axle is freely and rotatably supported, is configured between above-mentioned crank axle and above-mentioned bearing big
The insulating element of circular tube shaped is caused, there is the axis fixed part fastened with above-mentioned crank axle in the inner circumferential side of the insulating element,
The peripheral side of the insulating element is formed with to stockpile the long-pending oil space of the lubricating oil from the oil supplying hole supply of above-mentioned crank axle, on
It is synchronous with above-mentioned insulating element to state crank axle, above-mentioned insulating element and above-mentioned bearing slidably rotate.
Also, the coolant compressor of the present invention uses such as lower structure, possesses：Compressor means portion compresses refrigerant；
Motor part generates power；The power of the motor part is transferred to above-mentioned compressor mechanism part by crank axle；And ball
Bearing is freely and rotatably supported the crank axle, and substantially circular tube shaped is configured between above-mentioned crank axle and above-mentioned ball bearing
Insulating element has the axis fixed part fastened with above-mentioned crank axle in the inner circumferential side of the insulating element, in the insulating element
Peripheral side there is the inner ring side fixed part fastened with the inner ring of above-mentioned ball bearing, above-mentioned crank axle, above-mentioned insulating element
And the inner ring of above-mentioned ball bearing synchronously rotates.
The effect of invention is as follows.
Even make in the case of being configured at resin system of the insulating element of bearing for low cost, due to becoming insulating element
The structure worn is difficult to, so can also inhibit the abrasion caused by slip of the bearing of coolant compressor, insulating element
Abrasion powder tails off, and can inhibit the damaging of the bearing generated due to abrasion powder, the damage of slipper in other compressors
Wound, therefore the reliability of compressor can be improved.
Description of the drawings
Fig. 1 is the longitudinal section view of the scroll compressor of embodiment 1.
Fig. 2 is the enlarged drawing of the countershaft bearing portion of embodiment 1.
Fig. 3 is the structure chart of the insulating element of embodiment 1.
Fig. 4 is the structure chart of the insulating element of embodiment 2.
Fig. 5 is the structure chart of the insulating element of embodiment 3.
Fig. 6 is the enlarged drawing of the countershaft bearing portion of embodiment 4.
Fig. 7 is the structure chart of the insulating element of embodiment 4.
Fig. 8 is the structure chart of the ball bearing of embodiment 4.
Fig. 9 is the insulating element of embodiment 4 and the assembling figure of ball bearing.
The explanation of symbol
1-scroll compressor, 2-compression mechanical part, 3-driving portion, 4-motor, 5-fixed eddy plate, Gu 5a-
Static vortex disk ejiction opening, 5b-fixed eddy plate top plate portion, 5c-fixed eddy plate conveyor screw, 6-swirling scroll, 6a-swirling scroll spiral shell
Revolve body, the sliding bearing of 6b-swirling scroll bottom plate, 6c-swirling scroll bearing portion, 7-frame, 8-suction line, 9-ejection
Pipe, 10-rotor, 11-stator, 12-crank axle, 12a-crank-pin, 12b-main shaft part, 12c-countershaft portion, 12d-pump connect
Head, 13-European ring, 14-sliding bearing, 15-oil feed pump, 16-ball bearing, 17-lower frame, 18-housing, 19-housing
Cover, 30-closed vessel, 31-suction inlet, 32-discharge chambe, 33-integrated oil unit, 34-oil supplying hole, 35-transverse direction oil supplying hole,
36-transverse direction oil supplying hole, 50-insulating element, 51-through hole, 52-slit, 53-recess portion, 54-oil export, 55-fuel feeding
Pocket portion, 56-oil access, the protrusion of 57-insulating element, the notch of 58-ball bearing inner race, 59-space, 60-axis, 61-
Rotation stop part.
Specific embodiment
Hereinafter, when the coolant compressor to the present invention illustrates, illustrated by taking scroll compressor as an example, but
It can also be applied to the fluid compression engine that Rotary Compressor etc. possesses other compression mechanisms.Also, in bearing portion, to also should
It is illustrated for the situation of ball bearing, but other bearing arrangements can also be applied to.
【Embodiment 1】
First, the coolant compressor of embodiment 1 is illustrated using Fig. 1~Fig. 3.Fig. 1 is the vortex of embodiment 1
The longitudinal section view of compressor.As shown here, the scroll compressor 1 of the present embodiment storage compression mechanism in closed vessel 30
Portion 2, driving portion 3, crank axle 12 (crank-pin 12a, main shaft part 12b, countershaft portion 12c) are formed.
Compression mechanical part 2 is formed using fixed eddy plate 5, swirling scroll 6 and frame 7 as basic important document.Fixed eddy plate
5 using fixed eddy plate conveyor screw 5c, fixed eddy plate top plate 5b and fixed eddy plate ejiction opening 5a as basic structure.Swirling scroll 6
Using the sliding bearing 6c of swirling scroll conveyor screw 6a, swirling scroll bottom plate 6b and swirling scroll bearing portion as basic structure.
The sliding bearing 6c of swirling scroll bearing portion is formed as hanging down to the opposite side (the opposite side on spiral side) of swirling scroll bottom plate 6b
It is directly prominent.Frame 7 forms the component that sliding bearing 14 is arranged, and sliding bearing 14 supports one end of crank axle 12.
It will be formed for the driving portion 3 of rotation driving swirling scroll 6 such as lower component as basic important document：By 11 He of stator
The motor 4 that rotor 10 is formed；Crank axle 12；Oil feed pump 15；The critical piece of the anti-locking mechanism of rotation as swirling scroll 6
European ring 13；The sliding bearing 14 of crank axle base bearing；The ball bearing 16 of crank axle supplementary bearing；And swirling scroll bearing portion
Sliding bearing 6c.
The sliding bearing 6c of swirling scroll bearing portion is can move and revolve in the thrust direction as rotation direction of principal axis
The mode for turning to engage freely the crank-pin 12a of crank axle 12 is arranged on swirling scroll 6.
European ring 13 is disposed in the back side of swirling scroll bottom plate 6b.It is formed in the orthogonal two group key section of European ring 13
One group in the keyway of the receiving portion as European ring 13 of frame 7 is formed in lubrication slide (Run Move), remaining one group
The keyway lubrication for being formed in the back side of swirling scroll conveyor screw 6a is slided.Swirling scroll 6 exists compared with fixed eddy plate 5 as a result,
Not rotation circumnutation is carried out in the face vertical with the setting setting direction that is, axis direction of swirling scroll conveyor screw 6a.
For compression mechanical part 2, using the rotation of the crank axle 12 linked with motor 4, swirling scroll 6 compared with
Circumnutation is carried out to 5 not rotation of fixed eddy plate, thus via suction line 8 and suction inlet 31 to by fixed eddy plate conveyor screw 5c
And the discharge chambe 32 that swirling scroll conveyor screw 6a is formed sucks gas.Utilize the circumnutation of swirling scroll 6,32 side of discharge chambe
Volume is reduced to central portion movement side to be compressed gas, and sprays pressure from fixed eddy plate ejiction opening 5a to closed vessel 30
Contracting gas.Moreover, it is sprayed via bleed pipe 9 from closed vessel 30.The space in closed vessel 30 remains ejection pressure as a result,
Power.As the working fluid compressed in compression mechanical part, the HFC series coolants such as R410A, R32 are used.
The sliding bearing 14 of the main shaft part 12b of crank axle 12 is supported to be configured at the upside of motor 4, support countershaft portion 12c
Ball bearing 16 be configured at the downside of motor 4.That is, it is that sliding bearing 14, ball bearing 16 are two collateral motor 4
Support the structure of crank axle 12.
Oil feed pump 15 is the volume type pump for the lower end for being assemblied in crank axle 12.Using the oil feed pump 15, forcibly via
Pump joint 12d and oil supplying hole 34 will lodge in the oil of the lubrication of integrated oil unit 33 to the cunning of ball bearing 16, swirling scroll bearing portion
Dynamic bearing 6c and sliding bearing 14 supply.Oil supplying hole 34 is located in crank axle, and is formed as passing through in the axial direction of crank axle
It is logical.It supplies to the oil of oil supplying hole 34 and is also supplied to the sliding part of swirling scroll 6 and fixed eddy plate 5.Also, it is set in oil supplying hole 34
It is useful for the horizontal oil supplying hole 35 of 14 fuel feeding of sliding bearing and for the horizontal oil supplying hole 36 of ball bearing portion fuel feeding.
Ball bearing 16 forms the major part of countershaft bearing portion 37.The lower frame 17 of closed vessel 30 is being fixed on using bolt
Fixed shell 18.Ball bearing 16 is inserted from above into housing 18.Case cover 19 is also installed in the top of ball bearing 16.19 phase of case cover
It is located above than the opening portion of horizontal oil supplying hole 36 and ball bearing 16.Using the case cover 19, from horizontal oil supplying hole 36
The lubricating oil that opening portion flows out (4 side of motor) will not be spread upward, and be supplied to ball bearing 16.
Hereinafter, the feature of the present embodiment is illustrated using the Fig. 2 for the countershaft bearing portion 37 for being exaggerated Fig. 1.Such place
Show, in the present embodiment, the insulating element 50 of resin is provided between crank axle 12 and ball bearing 16.By setting this absolutely
Edge part 50 when drive motor 4 and electric current flowing, can cut off the electric current that ball bearing 16 is flowed to inside crank axle 12,
So as to prevent the galvano-cautery of the ball bearing 16 caused by electric current.
Insulating element 50 is before pump joint 12d is installed, by by 50 internal diameter pressure of insulating element to the fastening of crank axle 12
Enter the countershaft portion 12c outer diameters of crank axle to carry out.At this point, it is set by the outer circumferential surface in the countershaft portion 12c front ends of crank axle
Slit, and herein assemble insulating element 50 rotation stop part 61 (axis fixed part), come carry out insulating element 50 axially and in rotation
Fastening on direction.By fastening, the rotation of the crank axle 12 when insulating element 50 drives with motor 4 is synchronous, and the two becomes
Integrally rotate.In this way, the coolant compressor of the present embodiment becomes such as lower structure：When motor 4 drives and crank axle 12 revolves
When turning, 50 outer diameter of insulating element and 16 internal diameter of ball bearing slide.
Therefore, in the present embodiment, in order to prevent the abrasion of the insulating element 50 caused by slip, it is necessary to the oil of lubricating oil
Film.Therefore, in Fig. 2, using oil feed pump 15 from 33 suck lubrication oil of integrated oil unit, and it is run through the oil supplying hole inside crank axle 12
34, it is supplied from horizontal oil supplying hole 36 to ball bearing 16.The lubricating oil that supply comes is full of the space 59 for being arranged on insulating element 50, thus
Oil film can be formed between insulating element 50 and ball bearing 16, and then the abrasion of insulating element 50 can be inhibited.
Next, Fig. 3 is shown as being formed the detailed construction in the space 59 needed for oil film in the outer circumferential surface of insulating element 50.Such as
Shown here, insulating element 50 is shaped generally as the shape of circular tube shaped, with the through hole 51 penetrated through on the radial, upward
The slit 52 and the rotation stop part 61 arranged on inner peripheral surface lower end that ground is arranged on outer circumferential surface.As shown in Fig. 2, through hole 51 and crank axle
12 horizontal oil supplying hole 36 is coaxially disposed, and through hole 51 and slit 52 connect, so coming from the supply of horizontal oil supplying hole 36
Lubricating oil supplied via through hole 51 to slit 52, formed using the lubricating oil between insulating element 50 and ball bearing 16
Oil film.In addition, for insulating element 50, due to the press-in of 50 internal diameter of countershaft portion 12c outer diameters and insulating element of crank axle
With the rotation stop part 61 equipped with insulating element 50, so because of the through hole 51 of the rotation of crank axle and the horizontal oil supplying hole of crank axle 12
36 deviate, and hole will not be made to get jammed within each other.
Also, slit 52 upward open wide by (4 side of motor), and closed downwards, thus extra lubricating oil is only up
19 direction of the case cover discharge of side.That is, due to not being to flow through insulating element 50 from the horizontal oil supplying hole 36 of crank axle 12
Through hole 51 path lubricating oil because of the structure that flows downwards of conducting oneself with dignity, so utilizing the lubricating oil full of space 59, energy
It is enough always to form oil film in the inner peripheral surface of ball bearing 16.Thereby, it is possible to prevent 50 outer diameter of insulating element and ball bearing because of rotation
The abrasion of insulating element 50 caused by the slip of 16 internal diameters, while can also prevent the galvano-cautery of ball bearing 16.
【Embodiment 2】
Fig. 4 shows the structure of the insulating element 50 of the embodiment of the present invention 2.Omission has the function of same as Example 1
Part repeated explanation.
As shown in figure 4, the insulating element 50 of the present embodiment is shaped generally as the shape of circular tube shaped, has and penetrate through on the radial
Through hole 51, throughout outer circumferential surface complete cycle set substantially circular recess portion 53, be arranged on the oil of outer circumferential surface upward
Outlet 54 and the rotation stop part 61 arranged on inner peripheral surface lower end.In addition, insulating element 50 to the installation position of coolant compressor and
Direction, fastening method are same as Example 1.
In the present embodiment, the lubricating oil come from the supply of through hole 51 of insulating element 50 is accumulated in arranged on the recessed of outer circumferential surface
Portion 53.It is same as Example 1, it is discharged rather than simultaneously because certainly from the oil export 54 arranged on top (4 side of motor) due to lubricating oil
The structure that flows downwards of weight, institute is so as to always in the outer circumferential surface formation oil film of insulating element 50.Thereby, it is possible to prevent because of rotation
The abrasion of insulating element 50 caused by the slip of 16 internal diameter of 50 outer diameter of insulating element and ball bearing turned, while can also prevent ball
The galvano-cautery of bearing 16.In addition, the shape of recess portion 53 is not limited to shape shown in Fig. 4 or can obtain above-mentioned
The other shapes of effect.
【Embodiment 3】
Fig. 5 shows the structure of the insulating element 50 of the embodiment of the present invention 3.Omitting has and embodiment 1 or embodiment 2
The repeated explanation of the part of identical function.
As shown in figure 5, the insulating element 50 of the present embodiment is shaped generally as the shape of circular tube shaped, has and penetrate through on the radial
Through hole 51, upward arranged on outer circumferential surface oil export 54, make the recessed multiple fuel feeding pocket portions 55 formed of outer circumferential surface, even
The oily access 56 and the rotation stop part 61 arranged on inner peripheral surface lower end for meeting fuel feeding pocket portion 55.In addition, insulating element 50 is to refrigerant pressure
The installation position of contracting machine and direction, fastening method are same as Example 1.
In the present embodiment, the lubricating oil come from the supply of through hole 51 of insulating element 50 flows through oily access 56 and is accumulated in
Each fuel feeding pocket portion 55.It is same as Example 1, it is discharged not from the oil export 54 arranged on top (4 side of motor) due to lubricating oil
It is because of the structure that flows downwards of conducting oneself with dignity, institute is so as to always in the outer circumferential surface formation oil film of insulating element 50.Thereby, it is possible to anti-
The only abrasion of the insulating element 50 caused by the slip of 16 internal diameter of 50 outer diameter of insulating element and ball bearing of rotation, while also can
Prevent the galvano-cautery of ball bearing 16.In addition, the shape in fuel feeding pocket portion 55, size, number, the shape of oily access 56, size, fuel feeding
Connection method between pocket portion 55 is not limited to the situation shown in Fig. 5 or can obtain other knots of above-mentioned effect
Structure.
【Embodiment 4】
Next, the coolant compressor of the embodiment of the present invention 4 is illustrated using Fig. 6~Fig. 9.In addition, it omits
Have the function of with it is stated that symbol the identical part of structure repeated explanation.
Fig. 6 is the figure near the countershaft bearing portion 37 for the coolant compressor for being exaggerated the present embodiment.It is same as Example 1,
In the present embodiment, the horizontal oil supplying hole 36 of crank axle 12 is also arranged on the top (motor 4 of insulating element 50 and ball bearing 16
Side).
Fig. 7 shows the structure of the insulating element 50 of the present embodiment.As shown here, the insulating element 50 of the present embodiment becomes
57 are conformed in outer circumferential surface upper end and is equipped with the structure of rotation stop part 61 in inner peripheral surface lower end.Also, the solid of Fig. 8 illustrates ball
The structure of bearing 16.In the upper surface of the inner ring of ball bearing 16, notch 58 is set.Fig. 9 is the ball bearing 16 for assembling the present embodiment
With the figure of insulating element 50.In this way, make insulating element 50 protrusion 57 be arranged at ball bearing inner ring notch 58, so as to exhausted
In the case that edge part 50 is rotated compared with axis 60, the notch 58 of the protrusion 57 of insulating element 50 and the inner ring of ball bearing 16 connects
It touches, therefore the inner ring of insulating element 50 and ball bearing 16 synchronously rotates.Herein, as also shown in Figure 6, in the present embodiment, it is bent
Arbor 12 and insulating element 50 also synchronous rotary, thus this three of the inner ring of crank axle 12, insulating element 50, ball bearing 16 is synchronous
Rotation.As a result, between crank axle 12 and insulating element 50 and between insulating element 50 and ball bearing 16, insulation is not had
Component 50 wears to generate the situation of abrasion powder.
In addition, for the assembling of the notch 58 of the inner ring of the protrusion 57 and ball bearing 16 of insulating element 50, based on axis
The considerations of synchronization of 60 rotation and assembling easness, preferably insulating element protrusion 57 and ball bearing inner race notch 58 it
Between set transition degree of cooperation gap.
In Examples 1 to 3, insulating element when being fastening insulating element 50 and crank axle 12 and the driving in motor 4
The structure that 50 outer circumferential surface is slidably rotated in the inner peripheral surface of ball bearing 16 inhibits exhausted here by oil film is energetically formed
The abrasion of edge part 50 is so as to preventing the structure of the generation of abrasion powder.
In contrast, as in this embodiment, it is to assemble the inner ring of insulating element 50 and ball bearing 16 and driven in motor 4
The structure that the inner ring of insulating element 50 and crank axle 12 and ball bearing 16 synchronously rotates when dynamic, by from 50 row of insulating element
Except the part of slip, abrasion can be also eliminated, so as to prevent the generation of abrasion powder.
According to the structure of the present embodiment discussed above, insulating element 50 only is set in countershaft bearing portion 37, just will not be produced
The abrasion of raw insulating element 50, can prevent the galvano-cautery of ball bearing 16.In addition, the shape of the protrusion 57 of insulating element, size,
Number, shape, size, the number of notch 58 of inner ring of ball bearing 16 are not limited to Fig. 7~situation shown in Fig. 9, can also
It is the other structures that can obtain above-mentioned effect.
In addition, the present invention is not limited to the above embodiments, including various modifications example.For example, above-described embodiment be in order to
It is readily appreciated that the example for illustrating the present invention and being described in detail, and is not limited to must possess illustrated all structures.
Further, it is possible to a part for the structure of certain embodiment is replaced as to the structure of other embodiments, and also can be in certain embodiment
Structure on the basis of additional other embodiments structure.Further, it is possible to chasing after for other structures is carried out to the structure of each embodiment
Add, delete, replace.
Claims (6)
1. a kind of coolant compressor, which is characterized in that possess：
Compressor means portion compresses refrigerant；
Motor part generates power；
The power of the motor part is transferred to above-mentioned compressor mechanism part by crank axle；And
Bearing is freely and rotatably supported the crank axle,
The insulating element of substantially circular tube shaped is configured between above-mentioned crank axle and above-mentioned bearing, in the inner circumferential side of the insulating element
With the axis fixed part fastened with above-mentioned crank axle, it is formed with to stockpile from above-mentioned song in the peripheral side of the insulating element
The long-pending oil space for the lubricating oil that the oil supplying hole supply of arbor comes,
Above-mentioned crank axle is synchronous with above-mentioned insulating element, and above-mentioned insulating element and above-mentioned bearing slidably rotate.
2. coolant compressor according to claim 1, which is characterized in that
Above-mentioned long-pending oil space is made of through hole and slit, wherein, above-mentioned through hole is connected with above-mentioned oil supplying hole, above-mentioned slit with
The through hole connect and it is parallel with above-mentioned crank axle.
3. coolant compressor according to claim 1, which is characterized in that
Above-mentioned long-pending oil space is made of through hole and substantially a ring-shaped recess portion, wherein, above-mentioned through hole is connected with above-mentioned oil supplying hole,
Above-mentioned recess portion is connected with the through hole.
4. coolant compressor according to claim 1, which is characterized in that
Above-mentioned long-pending oil space is made of through hole, fuel feeding pocket portion and oily access, wherein, above-mentioned through hole and above-mentioned oil supplying hole
Connection, above-mentioned fuel feeding pocket portion are arranged on the outer circumferential surface of above-mentioned insulating element, and above-mentioned oil access connects above-mentioned through hole and above-mentioned fuel feeding
Pocket portion.
5. a kind of coolant compressor, which is characterized in that possess：
Compressor means portion compresses refrigerant；
Motor part generates power；
The power of the motor part is transferred to above-mentioned compressor mechanism part by crank axle；And
Ball bearing is freely and rotatably supported the crank axle,
The insulating element of substantially circular tube shaped is configured between above-mentioned crank axle and above-mentioned ball bearing, in the inner circumferential of the insulating element
Side has the axis fixed part that is fastened with above-mentioned crank axle, the peripheral side of the insulating element have in above-mentioned ball bearing
The inner ring side fixed part fastened is enclosed,
The inner ring of above-mentioned crank axle, above-mentioned insulating element and above-mentioned ball bearing synchronously rotates.
6. according to the coolant compressor described in any one of claim 1 to 5, which is characterized in that
Above-mentioned insulating element is formed from a resin.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-217080 | 2016-11-07 | ||
| JP2016217080A JP2018076780A (en) | 2016-11-07 | 2016-11-07 | Refrigerant compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108071591A true CN108071591A (en) | 2018-05-25 |
| CN108071591B CN108071591B (en) | 2020-03-10 |
Family
ID=62148908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711080780.5A Active CN108071591B (en) | 2016-11-07 | 2017-11-06 | Refrigerant compressor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2018076780A (en) |
| CN (1) | CN108071591B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019209048A1 (en) * | 2019-06-21 | 2020-12-24 | Volkswagen Aktiengesellschaft | Electric machine |
| CN112997014A (en) * | 2019-09-30 | 2021-06-18 | 东芝三菱电机产业系统株式会社 | Input shaft system |
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| CN1038860A (en) * | 1988-06-08 | 1990-01-17 | 科普兰公司 | Refrigeration compressor |
| JP2008193756A (en) * | 2007-01-31 | 2008-08-21 | Jtekt Corp | Rotary apparatus |
| CN102278294A (en) * | 2010-06-11 | 2011-12-14 | 日立空调·家用电器株式会社 | Displacement compressor |
| CN202579335U (en) * | 2012-05-16 | 2012-12-05 | 珠海格力电器股份有限公司 | Centrifugal compressor and rear end cover of motor of centrifugal compressor |
| CN102966673A (en) * | 2012-12-04 | 2013-03-13 | 普光新高（北京）技术开发有限公司 | Electric-isolation rotating shaft device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019209048A1 (en) * | 2019-06-21 | 2020-12-24 | Volkswagen Aktiengesellschaft | Electric machine |
| CN112997014A (en) * | 2019-09-30 | 2021-06-18 | 东芝三菱电机产业系统株式会社 | Input shaft system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108071591B (en) | 2020-03-10 |
| JP2018076780A (en) | 2018-05-17 |
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