CN104518598B - Sealed electrical compressor and air-conditioning device - Google Patents
Sealed electrical compressor and air-conditioning device Download PDFInfo
- Publication number
- CN104518598B CN104518598B CN201410050592.8A CN201410050592A CN104518598B CN 104518598 B CN104518598 B CN 104518598B CN 201410050592 A CN201410050592 A CN 201410050592A CN 104518598 B CN104518598 B CN 104518598B
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- insulating thin
- coil
- stator
- sealed electrical
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 34
- 230000006835 compression Effects 0.000 claims abstract description 27
- 238000007906 compression Methods 0.000 claims abstract description 27
- 230000011514 reflex Effects 0.000 claims abstract description 24
- 238000004804 winding Methods 0.000 claims abstract description 4
- 239000003507 refrigerant Substances 0.000 claims description 49
- 239000012212 insulator Substances 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 230000008021 deposition Effects 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 7
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 7
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 7
- -1 polyethylene terephthalate Polymers 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims 1
- 238000007667 floating Methods 0.000 abstract description 11
- 230000003068 static effect Effects 0.000 abstract description 9
- 239000000203 mixture Substances 0.000 description 17
- 230000000694 effects Effects 0.000 description 8
- 239000003921 oil Substances 0.000 description 8
- 238000000151 deposition Methods 0.000 description 7
- 239000010687 lubricating oil Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000011148 porous material Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 229920001707 polybutylene terephthalate Polymers 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- FXRLMCRCYDHQFW-UHFFFAOYSA-N 2,3,3,3-tetrafluoropropene Chemical compound FC(=C)C(F)(F)F FXRLMCRCYDHQFW-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 229920000106 Liquid crystal polymer Polymers 0.000 description 2
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008450 motivation Effects 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 235000015927 pasta Nutrition 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The present invention is sealed electrical compressor and air-conditioning device, and problem is to reduce the leakage current as caused by the floating static capacity between coil and stator core.Sealed electrical compressor possesses compression mechanical part and the motor being driven through rotation axis to this compressor means portion in closed container.In addition, the stator of above-mentioned motor（7b）, there is stator core（23）, coil of the winding in this stator core（24）And the insulating component being disposed between said stator iron core and above-mentioned coil（32）.This insulating component, by being stacked multi-disc insulating thin（32a、32b）It forms, the insulating thin of the side side in above-mentioned multi-disc insulating thin（32a）Axially both ends form reflex part（32aa）, the insulating thin of the opposing party side in above-mentioned multi-disc insulating thin is inserted into this reflex part（32b）Axial end portion.
Description
Technical field
The present invention relates to sealed electrical compressor and air-conditioning device, more particularly to being suitable as refrigerating air-conditioning
（Such as air-conditioning device, refrigerator, refrigerator-freezer, freezer show window etc.）, heat pump type hot water supply apparatus etc. freeze cycle composition
The sealed electrical compressor of equipment.
Background technology
For the motor of compressor, possesses the stator of rotor and configuration in the radial outside of rotor, this stator has fixed
Sub- iron core, the insulator configured opposite to each other with the axial both ends of the surface of the stator core respectively and in said stator iron core and insulation
The coil being all wrapped on son.Moreover, it is insulated between coil and stator core by insulating component.
At present, the greenhouse effects coefficient as the widely used R410A of refrigerant of air conditioner is 2088, it is desirable to use ring
The smaller refrigerant of border load.As its candidate, positive discuss using greenhouse effects coefficient is 675（That is, about 1/the 3 of R410A）
R32 as refrigerant.
However, the relative dielectric constant of R32 is higher than R410A.Therefore, in the case where employing R32 as refrigerant,
Even if between coil and stator core insulating component is set to insulate, the floating static capacity between coil and stator core
It also becomes larger, it is impossible to fully reduce leakage current.
As the prior art for reducing leakage current, have in patent document 1（Japanese Unexamined Patent Publication 8-107642 publications）In
The technology of record.In the technology of this patent document 1, by making the insulating paper on the contact surface of stator core and insulating paper
Side or stator core side have the construction of multiple bumps, reduce the contact area of insulating paper and stator, reduce leakage current.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 8-107642 publications
The content of the invention
Problems to be solved by the invention
However, even if insulating paper or stator core are made the irregular construction of tool, also in insulating paper and stator core
Accumulate refrigerant in gap, therefore, electric current is leaked through refrigerant from the lateral stator core side of insulating paper.Even if accordingly, there exist subtract
Few insulating paper and the contact area of stator core can not make the problem of leakage current reduction.
Since the dielectric constant of refrigerant is high generally than insulating paper, so, in the technology of above patent document 1, coil
Floating static capacity between stator core on the contrary increases.Therefore, in the stator of motor of patent document 1 is recorded in,
The leakage current as caused by floating static capacity cannot be reduced, particularly in refrigeration such as the R32 for having used relative dielectric constant high
In the case of agent, reducing the leakage current as caused by the floating static capacity between coil and stator core becomes difficult.
It is an object of the invention to obtain to reduce as caused by the floating static capacity between coil and stator core
The sealed electrical compressor and air-conditioning device of leakage current.
For solving the technological means of problem
In order to achieve the above object, a technical solution of the invention, be possess in closed container compression mechanical part and
The sealed electrical compressor for the motor being driven through rotation axis to this compressor means portion；It is characterized in that：Above-mentioned electricity
The stator of motivation has stator core, winds the coil in this stator core and be disposed in said stator iron core and above-mentioned line
Insulating component between circle；This insulating component is formed by being stacked multi-disc insulating thin；One in above-mentioned multi-disc insulating thin
Axially both ends form reflex part to partial insulating thin, are inserted into this reflex part another in above-mentioned multi-disc insulating thin
The axial end portion of outer insulating thin.
Another technical solution of the present invention, is to possess compression mechanical part in closed container and through rotation axis to this compressor
The sealed electrical compressor for the motor that mechanism part is driven；It is characterized in that：The stator of above-mentioned motor has stator
Iron core winds the coil in this stator core and the insulating component being disposed between said stator iron core and above-mentioned coil；This
Insulating component is formed by being stacked the insulating thin of multi-disc resin；Above-mentioned multi-disc insulating thin axially both ends it is each
From at least a portion or above-mentioned insulating thin arbitrary position reciprocally deposition.
The yet another technology scheme of the present invention is sealed electrical compressor, condenser, expansion valve and evaporator by successively
Connection circlewise forms the air-conditioning device of refrigerant circuit；It is characterized in that：Flowing through the refrigerant of above-mentioned refrigerant circuit is
Any one of the mix refrigerant of the unitary system cryogen of R32 or R32 containing more than 50 weight %, moreover, above-mentioned electrically driven hermetic
Compressor uses any of the above-described a sealed electrical compressor.
The effect of invention
According to the present invention, having to obtain can be reduced as caused by the floating static capacity between coil and stator core
The sealed electrical compressor of leakage current and the effect of air-conditioning device.
Description of the drawings
Fig. 1 is the longitudinal section view for the embodiment 1 for representing the sealed electrical compressor of the present invention.
Fig. 2 is the stereogram for the stator core for representing motor shown in Fig. 1.
Fig. 3 is the bottom view for the insulator for representing motor shown in Fig. 1.
Fig. 4 is viewed from above the stereogram of the insulator of motor shown in Fig. 1.
Fig. 5 is the sectional view near the teeth portion of the stator core in motor shown in Fig. 1, be the V-V lines that are represented in Fig. 1 to
Depending on sectional view.
Fig. 6 is insulating component expanded view shown in Fig. 5.
Fig. 7 is the figure for the embodiment 2 for illustrating the sealed electrical compressor of the present invention, is the stator core in motor
Sectional view near teeth portion is and the comparable figures of Fig. 5.
Specific embodiment
In the following, the specific embodiment of the present invention is illustrated with reference to the accompanying drawings.In addition, it is labelled in the various figures same attached
The part of icon note represents same or comparable part.
[embodiment 1]
Illustrate the embodiment of the present invention 1 using Fig. 1~Fig. 6.Fig. 1 is the sealed electrical compressor for representing the present embodiment 1
Longitudinal section view, the sealed electrical compressor of the present embodiment be located at form air-conditioning device refrigerant circuit on compression
Machine.That is, air-conditioning device is that sealed electrical compressor, condenser, expansion valve and evaporator are in turn connected into annular and form
The air-conditioning device of refrigerant circuit, in the present embodiment, the refrigerant for flowing through above-mentioned refrigerant circuit use the single refrigeration of R32
Any one of the mix refrigerant of agent or R32 containing more than 50 weight %, moreover, using the close of the present embodiment 1 described below
Closed form motor compressor, as the sealed electrical compressor for forming above-mentioned refrigerant circuit.
[being integrally formed for sealed electrical compressor]
Being integrally formed for sealed electrical compressor of the present embodiment 1 is illustrated according to Fig. 1.The present embodiment it is closed
Type motor compressor 50 is used as the constitution equipment of air-conditioning device, using closed container 1, compression mechanical part 2 and motor 7 as master
Want composition part.
Above-mentioned closed container 1, by cylindric canister portion 1a and by welded and installed this canister portion 1a upper and lower cover
The compositions such as 1b and bottom 1c, it is internal to become confined space.In addition, in the closed container 1 storage compression mechanism section 2 and on
Motor 7 is stated, oil groove 9 is formed in the bottom of the closed container 1.In this oil groove 9, the refrigerator oil by ether system or ester system is stored
Etc. compositions lubricating oil 8.The pasta of this lubricating oil 8, to be located at the drive to transferring above-mentioned motor 7 to compression mechanism section 2
The mode of the top for the supplementary bearing 15 that the lower part of the rotation axis 6 of power is supported is set.
Reference numeral 11 is the suction line for the cover 1b installations for penetrating through above-mentioned closed container 1, and reference numeral 22 is in perforation
State the discharge pipe of the canister portion 1a installations of closed container 1.This discharge pipe 22 is configured in the position being close to below compression mechanism section 2
It puts, the center position into closed container 1 is highlightedly configured, and is configured to, and makes the front end of the discharge pipe 22 from above-mentioned electricity
The outer circumferential surface of end coil 17 in motivation 7 is open with projecting to central side.
Compression mechanism section 2 is the compression mechanical part for compressing the gas refrigerants such as R32 and being discharged into closed container 1,
The top being arranged in closed container 1.Compression mechanical part 2 possesses fixed scroll 3, convolution whirlpool as main composition part
Capstan 4, frame 5 and cross slip-ring 10.
Above-mentioned fixed scroll 3, erects on end plate the scroll wrap of vortex shape and is formed, fastened with bolt in said frame
On 5.Suction inlet 12 is set in the peripheral part of fixed scroll 3, outlet 14 is set in central portion.Above-mentioned suction inlet 12 with it is above-mentioned
Suction line 11 connects, and above-mentioned outlet 14 is connected with the discharge room 40 of 2 top of compression mechanical part in above-mentioned closed container 1.
Above-mentioned convolution scroll plate 4, erects on end plate the scroll wrap of vortex shape and is formed, also, this convolution scroll plate 4 with
The mode being sandwiched between above-mentioned fixed scroll 3 and said frame 5 configures, by making above-mentioned fixed scroll 3 and convolution
Scroll plate 4 engages, and forms discharge chambe.In the back side of above-mentioned convolution scroll plate 4（Anti- fixed scroll side）Hub portion 4b is set,
Convolution bearing 4a is packed into hub portion 4b.In order to carry out eccentric drive to convolution scroll plate 4, it is fitted together in above-mentioned convolution bearing 4a
State the cam pin portion 6a of rotation axis 6.
Above-mentioned cross slip-ring 10 forms the rotation limiting mechanism of above-mentioned convolution scroll plate 4, scroll plate of circling round herein is set
Between 4 and said frame 5, for preventing convolution 4 rotation of scroll plate, it is made to carry out circular orbit movement.
Said frame 5 is fixed by welding on above-mentioned closed container 1, to above-mentioned fixed scroll 3, cross slip-ring 10
And convolution scroll plate 4 is supported.In the center of this frame 5, canister portion 5a prominent downwards is set.In this canister portion 5a, if
Put the base bearing 5b for being supported to above-mentioned rotation axis 6.
In above-mentioned fixed scroll 3 and the peripheral part of frame 5, formed the superjacent air space of fixed scroll 3（Discharge room
40）The multiple discharge gas passages connected with the underlying space of frame 5（It is not shown）.
Above-mentioned motor 7, by the rotor 7a being integrally formed by hot charging etc. in above-mentioned rotation axis 6 and by hot charging etc.
The stator 7b of above-mentioned 1 inner face of closed container is fixed on as main composition part, counterweight 16 is installed on above-mentioned rotor 7a.
That is, counterweight is installed on the upper surface of above-mentioned rotor 7a（Compression mechanical part side counterweight）16a, under being installed on lower face
Counterweight（Anti- compression mechanical part side counterweight）16b, counterweight 16a, 16b above and below these are fixed on above-mentioned rotor by multiple rivets respectively
On 7a.
Said stator 7b, with stator core（Hereinafter also referred to as iron core）23rd, the insulator of coil 24 and resin forming product
26 be main composition part.Stator core 23 is used to transfer rotating excitation field with good efficiencies.Coil 24 is wound in this iron core 23
On, have and make current flow through and generate multiple conductors of rotating excitation field.The insulator 26 of resin forming product is located at above-mentioned iron core 23
Axial both ends, for the insulation between above-mentioned coil 24 and iron core 23.Be located at the axial both ends of above-mentioned iron core 23 2 are above-mentioned
Insulator 26 is configured in a manner of clipping above-mentioned iron core 23 opposite each other.
Above-mentioned coil 24 is wrapped in a manner of concentratred winding on above-mentioned iron core 23.In addition, in the periphery of said stator 7b, time
And the all-round notch for forming axial many（It is not shown）, discharge gas passage is formed between this notch and closed container 1.
Above-mentioned rotor 7a, by rotor core（Hereinafter also referred to as iron core）25 and the built-in permanent magnet in this iron core 25
For main composition part, the rotating excitation field from said stator 7b is transformed into rotary motion, rotates above-mentioned rotation axis 6.This
Rotor 7a revolvably configures the medium pore 23a in the iron core 23 of said stator 7b（With reference to Fig. 2）In.
Above-mentioned rotation axis 6, insertion is entrenched in the medium pore of above-mentioned rotor 7a, integrated with this rotor 7a.In addition, this is revolved
The one end of shaft 6（Upper end side）, extend from rotor 7a to 2 side of compression mechanism section, be formed at the end of this rotation axis 6
Cam pin portion 6a is formed in a manner of engaging with compression mechanism section 2.As a result, by the compressed action of compression mechanism section 2
Apply eccentric force in above-mentioned cam pin portion 6a.In addition, the another side of above-mentioned rotation axis 6（Lower end side）, from above-mentioned rotor 7a to
9 side of above-mentioned oil groove of the bottom of closed container 1 extends.Moreover, above-mentioned rotation axis 6 in the both sides of above-mentioned rotor 7a by above-mentioned main shaft
It holds 5b and supplementary bearing 15 supports, form with being stably rotated.In addition, above-mentioned supplementary bearing 15 is closed by being fixed by welding in
Supporting member 41 on container 1 supports, also, is submerged in lubricating oil 8.
In above-mentioned rotation axis 6, set to supply the lubrication of the bottom of closed container 1 to each bearing portion, each sliding part
The through hole 6b of oil 8, the lubricating oil 8 of above-mentioned oil groove 9 are attracted to 2 side of compression mechanism section through above-mentioned through hole 6b.It is inhaled
It has guided to the lubricating oil 8 of this 2 side of compression mechanical part and has held 4a, base bearing 5b supply to above-mentioned rotary shaft, also, to compression mechanical part
2 each sliding part（The sliding part of the sliding part of cross slip-ring 10, two scroll plates 3,4）Supply.
To the lubricating oil 8 that the sliding part of compression mechanical part 2 has supplied with refrigerant gas from arranged on fixed scroll 3
The above-mentioned outlet 14 of central portion discharged to above-mentioned discharge room 40.
It is such as powered to above-mentioned motor 7, rotor 7a rotations then accompany, axis 6 also rotates, by carrying out cam pin portion with this
Rotary motion eccentric 6a, above-mentioned convolution scroll plate 4 are carried out convolution driving, are formed in above-mentioned fixed scroll 3 and convolution
Discharge chambe between scroll plate 4 becomes smaller when central portion movement lateral from periphery.As a result, from the external warp of closed container 1
The refrigerant gas that above-mentioned suction line 11 and suction inlet 12 have sucked is compressed in compression mechanical part 2, this refrigeration being compressed by
Agent gas is discharged from the discharge room 40 of outlet 14 to 1 internal upper part of closed container of 3 central portion of fixed scroll.
[stator core]
Fig. 2 is the stereogram of the stator core 23 of motor 7 shown in Fig. 1.Shown in such Fig. 2, stator core 23 is by being stacked
Multiple steel plates form, possess the annulus 27 of peripheral side and it is prominent from the inner circumferential of this annulus 27 towards radially inner side and
In the circumferential direction the teeth portion 28 that is arranged at equal intervals.In addition, reference numeral 23a is the medium pore of stator core 23, reference numeral 33
It is slot.
Above-mentioned motor 7 is so-called 4 pole, 6 slot, using not across in multiple above-mentioned teeth portion 28 but around 1 teeth portion
28 intensively wound around coil 24（With reference to Fig. 1, Fig. 5）So-called concentratred winding mode.
[insulator]
Fig. 3 is the bottom view for the insulator 26 for representing motor 7 shown in Fig. 1, and Fig. 4 is viewed from above this insulator 26
Stereogram.This insulator 26, is clamped between stator core 23 and coil 24, and stator core 23 and coil 24 are carried out absolutely
Edge.
Above-mentioned insulator 26, such as by liquid crystal polymer（LCP）, polybutylene terephthalate (PBT)（PBT）, polyphenylene sulfide
（PPS）, polyimides, the good resin material of the heat resistances such as polyester form.In addition, insulator 26 improves for intensity, it is best
It is made of the above-mentioned material for being mixed into glass fibre.
As shown in Figures 3 and 4, insulator 26 have insulator annulus 29 and inner circumferential from insulator annulus 29 towards
Radially inner side it is prominent and in the circumferential direction multiple main parts 30 for being arranged at equal intervals.
The above-mentioned insulator annulus 29 of insulator 26, with two of the stator core annulus 27 with said stator iron core 23
The mode of end contact configures, and multiple aforementioned body portions 30 of insulator 26 are with multiple teeth portion 28 with said stator iron core 23
The mode of both ends of the surface contact configures.That is, said stator iron core 23 between above-mentioned 2 insulators 26 from the side being axially sandwiched into
Formula is formed.
[explanation of leakage current]
Coil 24 is flowed through in the electromagnetic force that stator 7b occurs by electric current, rotor 7a is made to be rotated together with rotation axis 6, by
This, sealed electrical compressor is driven.Moreover, the electric current of the part in flowing through the electric current of above-mentioned coil 24 is to stator core
23 leakages.
In the sealed electrical compressor for air-conditioning device etc., because stator 7b is secured directly to the close of steel plate
It closes on container 1, so, the limit value of leakage current is defined in electrical appliance safety law, so as not to be had an impact to human body.
That is, the leakage current flowed between charging part and the surface of body, is prescribed in a manner of becoming below 1mA.Therefore, it is necessary to
It takes some countermeasures, is below 1mA to flow through leakage current in the electric current of coil 24, being leaked to stator core 23.
The principle of leakage current is identical with the principle of capacitor, such as sets leakage current as i, cycle f, floats direct capacitance
It measures as the relation establishment of C, voltage V, then following formula.
I=2 π fCV ...（1）
Floating static capacity C between coil 24 and stator core 23, such as sets the phase between coil 24 and stator core 23
It is ε to dielectric constant, area between coil 24 and stator core 23 is S, and the distance between coil 24 and stator core 23 are
The relation establishment of d, then following formula.
C=ε S/d ...（2）
[relative dielectric constant of refrigerant R32]
Greenhouse effects coefficient is low, the opposite dielectric of the refrigerant R32 in question as the candidate of follow-on refrigerant
Constant ε is higher than refrigerant R410A.For example, the relative dielectric constant ε of the R410A at 40 DEG C is 7.7045, on the other hand,
The relative dielectric constant ε of R32 at 40 DEG C is 11.268.That is, in the case where employing R32 as refrigerant, according to upper
It states（2）Formula, floating static capacity C become larger.Therefore, according to above-mentioned（1）Formula is more than in electrical appliance safety there are leakage current i
The danger being worth specified in method.
[previous leakage current countermeasure]
It by clipping insulating component between coil 24 and stator core 23, can reduce leakage current i.However,
In the case of employing R32 as refrigerant, in insulating component generally used now, it is impossible to ensure leakage current i by electrical
Value is following as defined in articles for use safety law.Although it is also contemplated that the thickness of increase insulating component, such as makes insulating component thickening, then
Cost becomes higher, and assembling also deteriorates.In addition, though the thickness of the insulating film by increasing coil 24 is also contemplated for come really
Insulation distance is protected, but this can make the occupation efficiency of coil increase the amount a considerable amount increased with the insulating film thickness of coil,
Assembling also deteriorates.
[the leakage current countermeasure of the present embodiment]
Fig. 5 is the sectional view near the teeth portion 28 of the stator core 23 in motor shown in Fig. 1, be V-V lines shown in Fig. 1 to
It is the state that insulating component 32 is configured in the gap illustrated between the teeth portion 28 of stator core 23 and coil 24 depending on sectional view
Figure.In addition, Fig. 6 is the expanded view of insulating component 32 shown in Fig. 5.
As shown in figure 5, in the present embodiment, coil 24 is across the insulating component being made of multi-disc insulating thin 32a, 32b
32 are wrapped in the teeth portion 28 of stator core 23.In addition, as above-mentioned insulating component（Insulating thin）Material, preferably for example by
Polyethylene terephthalate（PET）, polyethylene naphtha（PEN）Etc. the good resin material of heat resistances form.
Moreover, above-mentioned insulating component 32 is as shown in the expanded view of Fig. 6, in above-mentioned multi-disc insulating thin 32a, 32b, line
Enclose the axial both ends of the insulating thin 32a of 24 sides（Upper and lower both ends）Reflex part 32aa is formed, herein upper and lower reflex part
The insulating thin 32b of the other insulating component being inserted into 32aa in above-mentioned multi-disc insulating thin, i.e. 23 side of stator core, becomes
The composition of the insulating thin 32b of 23 side of stator core is sandwiched in reflex part 32aa above and below this.
Moreover, as shown in figure 5, at the axial both ends of stator core 23（It is upper and lower side in Figure 5）, above-mentioned insulating component
The insulating thin 32a of 32 24 side of coil is folded back, and is become to be sandwiched by the upper and lower reflex part 32aa of above-mentioned insulating thin 32a and be determined
The other insulating thin 32b of sub- 23 side of iron core and the other insulating thin 32b of 23 side of stator core has been carried out fixed
State configures this insulating component 32 between the radial direction of said stator iron core 23 and coil 24.That is, insulating component shown in Fig. 6
32 are flexed in a manner of consistent with the shape of the slot 33 between the teeth portion 28 for being formed in stator core 23 shown in Fig. 2, are inserted into
In this slot 33.After this insulating component 32 is inserted into above-mentioned slot 33, pass through the main body in above-mentioned teeth portion 28 and above-mentioned insulator 26
All wound around coil 24 in portion 30, becomes state as shown in Figure 5.
In addition, in the present embodiment, the insulating thin 32a of 24 side of coil in above-mentioned insulating component 32, with stator core
The insulating thin 32b of 23 sides is compared and is increased thickness.Because of the difference of thickness therefore, the reflex part above and below the axial direction of insulating thin 32a
The formability of 32aa improves, and can easily make the insulating thin 32b of a relatively thin side along the insulating thin 32a's of a thicker side
Shape.Therefore, it is possible to easily carry out insertion of the insulating component 32 into the above-mentioned slot 33 of stator core 23.
Also, because the reflex part 32aa above and below the axial direction by above-mentioned insulating thin 32a fixes other insulating thin material
32b, so, when being inserted into insulating component 32 in above-mentioned slot 33, it can also prevent above-mentioned insulating thin 32b to axial dipole field.
Coil 24 contacts with the edge part of the end as insulating thin 32b and damages coil when can also inhibit wound around coil as a result,
24.That is, insulating thin 32a, 32b of insulating component 32 are formed, because as described above by PET, PEN etc. hard resin material structure
Into, so, there is the danger of the insulating film by its edge part damage coil 24.However, in the present embodiment, due to being to become
The end face of the edge part of insulating thin 32a, 2b and the discontiguous composition of coil, thus it is possible to inhibit the insulation quilt to coil 24
The damage of film.
In addition, the present embodiment forms insulating component 32 by multi-disc insulating thin 32a, 32b, in the insulating thin of coil sides
The axial both ends of 32a set reflex part 32aa, make the composition that thus reflex part 32aa fixes other insulating thin 32b, institute
With, compared with the previous insulating component 32 being made of 1 insulating component, can make between coil 24 and stator core 23 away from
Increase the thickness a considerable amount with above-mentioned insulating thin 32b from d.Therefore, according to above-mentioned（2）Formula can reduce floating direct capacitance
C is measured, according to above-mentioned（1）Formula can obtain the effect that can also reduce leakage current i.
Also, the coil sides insulating thin 32a in the present embodiment, forming insulating component 32 is folded back at axial both ends,
Other insulating thin 32b can be sandwiched securely, even thus it is possible to making refrigerant in refrigerant circuit to pressure
It is returned inside contracting machine under the operating condition as liquid, liquid refrigerant is also difficult to enter between above-mentioned 2 insulating thins 32a, 32b
Construction.It is thus possible to obtain can inhibit the high refrigerant R32 of relative dielectric constant flow into coil 24 and stator core 23 it
Between cause the increased effect of leakage current.That is, since the relative dielectric constant insulating component 32 lower than R32 and refrigerator oil being matched somebody with somebody
It puts between coil 24 and stator core 23, thus it is possible to reduce the average value of relative dielectric constant ε, leakage electricity can be reduced
Flow i.
[embodiment 2]
According to Fig. 7, illustrate the embodiment of the present invention 2.Fig. 7 is the motor of the sealed electrical compressor of the present embodiment 2
In stator core teeth portion near sectional view, be with the comparable figures of Fig. 5, be the teeth portion 28 and line illustrated in stator core 23
The figure of the state of insulating component 32 is configured in gap between circle 24.In addition, in the explanation of the present embodiment 2 pair with above-mentioned implementation
The different part of example 1 illustrates, due to identical with above-described embodiment 1 on other parts, so, their explanation is saved
Slightly.
In above-described embodiment 1, the example formed as follows is illustrated, i.e. insulating component 32 is insulated by multi-disc
Thin plate 32a, 32b are formed, lower in the axial direction on the insulating thin 32a of a side to set reflex part 32aa, thus reflex part 32aa
Other insulating thin material 32b is sandwiched and is fixed.On the other hand, in the present embodiment 2, insulating component 32 is insulated by multi-disc
Thin plate（The thin plate of resin）It is identical that 32a, 32b form this point, but reflex part 32aa as being not provided with above-described embodiment 1,
It alternatively forms, making makes multi-disc（It is 2 in the present embodiment）Insulating thin 32a, 32b axial both ends
（Upper and lower end parts）The composition of respective at least a portion of 32c reciprocally deposition.
In addition, in the present embodiment, although the whole at the axial both ends of insulating thin 32a, 32b is made reciprocally to melt
It applies, but can not also make whole depositions at the axial both ends of insulating thin 32a, 32b, but partly deposition.Alternatively, also may be used
Independently make two insulating thins at the arbitrary position of insulating thin with the axial both ends 32c of insulating thin 32a, 32b
32a, 32b reciprocally deposition.
In addition, above-mentioned insulating thin 32a, 32b in the same manner as above-described embodiment 1 by polyethylene terephthalate
（PET）, polyethylene naphtha（PEN）The resin material of excellent heat resistances is waited to form.
Even if forming as in this embodiment, in the slot 33 to stator core 23（With reference to Fig. 2）When being inserted into insulating component 32,
Also it can prevent multi-disc insulating thin 32a, 32b from reciprocally being deviated axially.Therefore, it is possible to prevent any insulating thin ratio in addition
Insulating thin protrude in the axial direction, in wound around coil coil 24 with as above-mentioned protrusion insulating thin end edge
Portion contacts and damages the coil 24.
In addition, in the present embodiment, because it is thin with insulation to increase the distance between coil 24 and stator core 23 d
The thickness a considerable amount of plate 32b, thus it is possible to reduce leakage current i similarly to Example 1.
Also, because insulating thin 32a and insulating thin 32b at both ends or arbitrary position by deposition, multi-disc
Insulating thin 32a, 32b become the state mutually snugly secured.Therefore, even refrigerant circuit refrigerant to
It is returned inside compressor under the operating condition as liquid, liquid refrigerant is also difficult into above-mentioned multi-disc insulating thin 32a, 32b
Between, between refrigerant R32 inflow coils 24 that can be high to relative dielectric constant and stator core 23 leakage current i is caused to increase
Add capable inhibition.Particularly above-mentioned insulating thin 32a and insulating thin 32b by their both ends by deposition in a manner of structure
In the case of, it may have liquid refrigerant is difficult to enter effect between insulating thin 32a, 32b.
It as described above, can be right according to each embodiment of the sealed electrical compressor of the invention described above
The high refrigerant R32 of relative dielectric constant, which is flowed between coil 24 and stator core 23, causes leakage current i increases to be inhibited.
Therefore, such as the sealed electrical compressor of the present embodiment is used in the air-conditioning device for having used refrigerant R32, then can obtained
Leakage current is inhibited into the air-conditioning device in such as below 1mA.
That is, it is quiet by the floating between coil 24 and stator core 23 can to obtain reduction for each embodiment according to the present invention
The sealed electrical compressor and air-conditioning device of leakage current caused by capacitance.
In addition, the invention is not restricted to above-described embodiments, various variations are included.
For example, in above-mentioned the present embodiment, although the description of the example that vortex is employed as compression mechanical part 2, but
In addition, it is possible to use swinging, swing type or shuttle compression mechanical part 2.In addition, though it illustrates vertical closed
Type motor compressor, but also can similarly be applied for horizontal sealed electrical compressor.
Also, although the situation to having used R32 as refrigerant is illustrated, but not limited to this, for example, in conduct
Refrigerant has used the mix refrigerant of the R32 containing more than 50 weight %, has needed to take other refrigerants of leakage current countermeasure
（Such as containing R32 and HFO-1234yf（2,3,3,3- tetrafluoropropenes）Refrigerant constituent etc.）In the case of, it also can be similary
Ground application.
In addition, above-described embodiment is the implementation in order to illustrate and explain in detail with being readily appreciated that in the present invention
Example, it is not necessary to be limited to the embodiment for possessing the whole compositions illustrated.Also, a part for the structure of a certain embodiment can be put
The structure of other embodiments is changed into, in addition, can also increase the structure of other embodiments in the composition of a certain embodiment.
Reference sign：
1：Closed container, 1a：Canister portion, 1b：Cover, 1c：Bottom,
2：Compression mechanical part, 3：Fixed scroll,
4：Circle round scroll plate, 4a：Circle round bearing, 4b：Hub portion,
5：Frame, 5a：Canister portion, 5b：Base bearing,
6：Axis, 6a：Cam pin portion, 6b：Through hole,
7：Motor, 7a：Rotor, 7b：Stator,
8：Lubricating oil, 9：Oil groove, 10：Cross slip-ring,
11：Suction line, 12：Suction inlet, 14：Outlet, 15：Supplementary bearing,
16：Counterweight, 16a：Upper counterweight, 16b：Lower counterweight,
17：End coil, 18a, 18b：Discharge gas passage,
22：Discharge pipe, 23：Stator core, 23a：Medium pore,
24：Coil, 25：Rotor core, 26：Insulator,
27：The annulus of stator core, 28：Teeth portion,
29：The annulus of insulator, 30：The main part of insulator,
32：Insulating component, 32a：Insulating thin, the 32aa of coil sides：Reflex part,
32b：Insulating thin, the 32c of stator core side：The both ends of insulating thin,
33：Slot, 40：Discharge room, 41：Supporting member, 50：Sealed electrical compressor.
Claims (7)
1. a kind of sealed electrical compressor is that possess compression mechanical part in closed container and through rotation axis to this compressor machine
The motor that structure portion is driven and the sealed electrical compressor used as the constitution equipment of refrigerant circuit；
It is characterized in that：
The refrigerant for flowing through above-mentioned refrigerant circuit is the mixing system of the unitary system cryogen of R32 and the R32 containing more than 50 weight %
Any one in cryogen,
The stator of above-mentioned motor has stator core, winds the coil in this stator core and be disposed in said stator iron
Insulating component between the heart and above-mentioned coil；
This insulating component is formed by being stacked multi-disc insulating thin；
Axially both ends form reflex part to the insulating thin of coil sides in above-mentioned multi-disc insulating thin, in this reflex part
The axial end portion of the insulating thin of the stator core side in above-mentioned multi-disc insulating thin is inserted,
Insulator is equipped at the axial both ends of said stator iron core, is all wound on said stator iron core and above-mentioned insulator
Above-mentioned coil, and
At least a portion of above-mentioned reflex part contacts in the axial direction with said stator iron core, also, at least the one of above-mentioned reflex part
Part contacts on the radial with above-mentioned insulator.
2. sealed electrical compressor according to claim 1, it is characterised in that：The insulation for forming above-mentioned insulating component is thin
Plate is made of the resin material of excellent heat resistance.
3. sealed electrical compressor according to claim 2, it is characterised in that：Form the resinous wood of above-mentioned insulating thin
Material, is polyethylene terephthalate (PET) or polyethylene naphtha (PEN).
4. sealed electrical compressor according to claim 1, it is characterised in that：Said stator iron core, possesses peripheral side
Annulus and from this annulus teeth portion prominent to radially inner side, above-mentioned insulator possess insulator annulus and from this insulation
The sub- annulus main part prominent to radially inner side, in the teeth portion of said stator iron core and the main part of above-mentioned insulator all with
Concentratred winding mode is wrapped above-mentioned coil.
5. a kind of sealed electrical compressor is that possess compression mechanical part in closed container and through rotation axis to this compressor machine
The motor that structure portion is driven and the sealed electrical compressor used as the constitution equipment of refrigerant circuit；
It is characterized in that：
The refrigerant for flowing through above-mentioned refrigerant circuit is the mixing system of the unitary system cryogen of R32 and the R32 containing more than 50 weight %
Any one in cryogen,
The stator of above-mentioned motor has stator core, winds the coil in this stator core and be disposed in said stator iron
Insulating component between the heart and above-mentioned coil；
This insulating component is formed by being stacked the insulating thin of multi-disc resin；
The above-mentioned multi-disc insulating thin axially arbitrary portion of the respective at least a portion at both ends or above-mentioned insulating thin
Position reciprocally deposition,
Axially both ends form reflex part to the insulating thin of coil sides in above-mentioned multi-disc insulating thin, in this reflex part
The axial end portion of the insulating thin of the stator core side in above-mentioned multi-disc insulating thin is inserted,
Insulator is equipped at the axial both ends of said stator iron core, is all wound on said stator iron core and above-mentioned insulator
Above-mentioned coil, and
At least a portion of above-mentioned reflex part contacts in the axial direction with said stator iron core, also, at least the one of above-mentioned reflex part
Part contacts on the radial with above-mentioned insulator.
6. sealed electrical compressor according to claim 5, it is characterised in that：Form the above-mentioned more of above-mentioned insulating component
Piece insulating thin, the whole at axial both ends reciprocally deposition.
It is that sealed electrical compressor, condenser, expansion valve and evaporator are in turn connected into annular and structure 7. a kind of air conditioner
Into the air-conditioning device of refrigerant circuit；
It is characterized in that：
The sealed electrical compressor described in any one in above-mentioned sealed electrical compressor usage right requirement 1 to 5.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013210980A JP6261271B2 (en) | 2013-10-08 | 2013-10-08 | Hermetic electric compressor and air conditioner |
| JP2013-210980 | 2013-10-08 |
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| CN104518598A CN104518598A (en) | 2015-04-15 |
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| CN107534342B (en) * | 2015-04-30 | 2019-07-12 | 三菱电机株式会社 | Electric rotating motivation and compressor |
| WO2017135054A1 (en) * | 2016-02-03 | 2017-08-10 | 三菱電機株式会社 | Rotating electric machine |
| US11469638B2 (en) | 2018-03-22 | 2022-10-11 | Mitsubishi Electric Corporation | Stator insulating members for rotary electric machine |
| JP6914419B2 (en) * | 2018-08-09 | 2021-08-04 | 日立ジョンソンコントロールズ空調株式会社 | Sealed electric compressor and refrigerating air conditioner using it |
| US20210262710A1 (en) * | 2018-08-20 | 2021-08-26 | Daikin Industries, Ltd. | Refrigeration cycle apparatus |
| JP7317525B2 (en) * | 2019-03-08 | 2023-07-31 | 三菱重工サーマルシステムズ株式会社 | electric compressor |
| JPWO2021064984A1 (en) * | 2019-10-04 | 2021-04-08 |
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| CN202931062U (en) * | 2012-12-11 | 2013-05-08 | 宁波长城电机制造厂 | Threadmill motor winding insulation device |
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| JPS60162951U (en) * | 1984-04-04 | 1985-10-29 | 株式会社安川電機 | Slot insulation for rotating electric machines |
| JP2000333398A (en) * | 1999-05-21 | 2000-11-30 | Matsushita Electric Ind Co Ltd | Stator of electric rotating machine and fully enclosed motor compressor mounting it |
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| JP2006197662A (en) * | 2005-01-11 | 2006-07-27 | Matsushita Electric Ind Co Ltd | Stator with skew |
| JP5131161B2 (en) * | 2008-11-07 | 2013-01-30 | ダイキン工業株式会社 | Stator, motor and compressor |
| JP2012138991A (en) * | 2010-12-24 | 2012-07-19 | Toyota Industries Corp | Electric motor |
| JP5751927B2 (en) * | 2011-05-13 | 2015-07-22 | 三菱電機株式会社 | Rotating electric machine and method of manufacturing stator used therefor |
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| CN1177853A (en) * | 1996-07-04 | 1998-04-01 | 松下电器产业株式会社 | Motor driven by inverter |
| WO2012053464A1 (en) * | 2010-10-22 | 2012-04-26 | 株式会社 明電舎 | Inter-phase insulation sheet for rotating electric machine |
| CN202931062U (en) * | 2012-12-11 | 2013-05-08 | 宁波长城电机制造厂 | Threadmill motor winding insulation device |
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|---|---|
| JP6261271B2 (en) | 2018-01-17 |
| CN104518598A (en) | 2015-04-15 |
| JP2015076953A (en) | 2015-04-20 |
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