CN206640484U - Compressor and air-conditioning - Google Patents

Abstract

The utility model discloses a kind of compressor and air-conditioning, compressor (300) includes motor, motor includes the multi-disc stator punching (1) laminated, stator punching is circular ring plate, in the anchor ring of stator punching be provided with axially through and circumferentially spaced arrangement multiple stator slots (2), stator slot is the rectangular channel radially extended, and the corner of rectangular channel is formed as rounded corner (21).Wherein, bond length D=1.6mm~4.2mm of stator slot, the radius of corner of rounded corner is R, and is met：D/R=2~4.The utility model pointedly devises the shape of rectangular stator groove, on the basis of substantially rectangular elementary contour is not changed, the rounded corner of optimization design corner, it is possible to increase the minimum widith and area of stator tooth, it is close to reduce the magnetic of stator tooth boots, improves the conduction of main flux.In addition, rounding design can coordinate the technique fillet at rounded corner with winding conductor in groove so that maximally utilize groove area so that motor has higher stator copper factor, so as to final lifting motor efficiency.

Description

Compressor and air-conditioning

Technical field

The utility model belongs to compressor field, in particular it relates to a kind of air-conditioning and its compressor.

Background technology

Noise is one of evaluation most important index of air conditioning comfortableness, and air conditioner noises are mainly derived from its compression used Machine, and drive compressor motor be compressor noise driving source, therefore the noise reduction of compressor of air conditioner and its motor be improve The important means and mode of air conditioning comfortableness requirement.It is in addition, continuous with energy-saving and emission-reduction requirement and the standard of environmental requirement Improve, market is also synchronous to the requirement of the efficiency of air-conditioning and its compressor used to improve, i.e., also has to the efficiency of compressor electric motor Tightened up requirement.

In the prior art, motor stator typically uses the stator core construction of multiple-grooved rectangular channel, can be effectively improved motor gas The close harmonic wave of gap magnetic and cogging torque etc. influence the Incentive of compressor noise.Using the motor of this kind of structure, compressor is made an uproar Sound is available significantly to be improved very much.And in existing multiple-grooved rectangular channel motor technology, for convenience of manufacturing, use the paint of segmentation Copper-clad rectangular winding wire is axially inserted into from stator core and connects into complete winding, forms armature coil, therefore stator slot can be real The structure of existing closed slot, i.e. adjacent stators tooth are connected to what is connect, can reach and reduce cogging torque to improve the effect of noise.But Closed slot structure can cause the increase of stator tooth leakage field, influence the conduction of armature field and main flux, cause motor to be difficult to high efficiency Change.

In addition, the stator slot of electric machine iron core must coordinate the shape of enamel-cover copper rectangular winding wire, stator slot shape is designed as closely Like rectangular-shaped (i.e. parallel slot), two neighboring stator slot limits trapezoidal stator tooth.Wherein, it is increase groove area, existing skill Generally the minimum widith of trapezoidal stator tooth is set too small in art, its result is exactly the close excessively saturation of teeth portion magnetic so that motor Iron loss increases substantially, while also influences the transmission of main flux, and motor operating current, which improves, causes copper loss to rise, and finally makes motor It is difficult to high efficiency, it is difficult to reach high energy efficiency requirement.

Utility model content

For the drawbacks described above or deficiency of prior art, the utility model provides a kind of air-conditioning and its compressor, can Improve the operating efficiency of compressor.

To achieve the above object, the utility model provides a kind of compressor, including for driving the motor of compressor, institute The multi-disc stator punching that motor includes laminating is stated, the stator punching is circular ring plate, is provided with the anchor ring of the stator punching Axially through and circumferentially spaced arrangement multiple stator slots, the stator slot is the rectangular channel radially extended, the square The corner of shape groove is formed as rounded corner；

Wherein, bond length D=1.6mm~4.2mm of the stator slot, the radius of corner of the rounded corner is R, and full Foot：D/R=2~4.

Preferably, stator winding, the fillet half of the semiconductor process fillet of the stator winding have been passed around in the stator slot Footpath is less than the radius of corner of the rounded corner of the stator slot.

Preferably, radius of corner R=0.5mm~2mm of the rounded corner.

Preferably, the external diameter of the stator punching is d1, internal diameter d2, and is met：D1=80mm~160mm, d2/d1= 0.5~0.6.

Preferably, the number of the stator slot in each stator punching is 36~72.

Preferably, the radius of corner of four rounded corners of the stator slot of rectangle is identical.

Preferably, the radial inner end of the stator slot penetrates and radially vertically formed with connected entrance, the connected entrance The central through hole of the stator punching is connected, circumferential openings width of the connected entrance at the inner peripheral of the stator punching is A, the bond length of the stator slot is D, and is met：A/D=0.1~0.5.

Preferably, the motor includes stator and rotor, and the stator includes armature coil and stator rushes as described in multi-disc The stator core that piece is overrided to form, the armature coil are arranged in the stator slot, and the rotor includes being arranged on institute State the rotor core in the central through hole of stator punching and the magnet in the rotor core.

Preferably, the armature coil includes the enamel-cover copper edge-wind group being around as stator winding in the stator slot Line.

In addition, the utility model additionally provides a kind of air-conditioning, the air-conditioning includes above-mentioned compressor.

Pass through above-mentioned technical proposal, due in the stator core of the motor of compressor of air conditioner of the present utility model, The corner of the stator slot of rectangular reservoir shape is formed as rounded corner, can coordinate with the technique fillet of winding conductor in groove so that maximum Change utilize groove area so that motor has a higher stator copper factor, while rounded corner also increase the width of stator tooth boots with Area, the magnetic of reduction stator tooth boots is close, improves the conduction of main flux, finally improves the operating efficiency of motor.

Other features and advantages of the utility model will be described in detail in subsequent specific embodiment part.

Brief description of the drawings

Accompanying drawing is to be further understood for providing to of the present utility model, and a part for constitution instruction, and following Embodiment be used to explain the utility model together, but do not form to limitation of the present utility model.In the accompanying drawings：

Fig. 1 is the structural representation according to the motor of the compressor of preferred embodiment of the present utility model；

Fig. 2 is the structural representation according to the stator core of the first preferred embodiment of the present utility model, therein fixed Pilot trench is communicated with mouth to connect central through hole；

Fig. 3 is the structural representation according to the stator core of the second preferred embodiment of the present utility model, therein fixed The corner of pilot trench is provided with rounded corner；

Fig. 4 and Fig. 5 is the partial enlarged drawing of two kinds of preferred structures of the connected entrance for showing stator slot respectively；

Fig. 6 is the partial enlarged drawing for the stator slot that displaying corner is provided with rounded corner；

Fig. 7 is that the structure of the compressor and its motor part in the air-conditioning according to preferred embodiment of the present utility model is former Reason figure.

Description of reference numerals

The stator slot of 1 stator punching 2

The central through hole of 3 connected entrance 4

The stator core of 5 stator tooth 10

The armature coil of 20 insulating materials 30

The magnet of 40 rotor core 50

The stator tooth boots of 21 rounded corner 51

The rotor of 100 stator 200

The bent axle of 300 compressor 301

The cylinder of 302 base bearing 303

The supplementary bearing of 304 piston 305

OO ' footpaths are to the midline

Embodiment

Specific embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.It should be appreciated that herein Described embodiment is merely to illustrate and explained the utility model, is not limited to the utility model.

In the utility model, in the case where not making opposite explanation, the noun of locality such as " upper and lower, top, bottom " used is generally It is each part mutual alignment either on vertical, vertical or gravity direction for direction shown in the drawings Relationship description word." inside and outside " is commonly referred to as the inside and outside mutual position of each part for the radial direction of electrical axis Put relation word.

The various factors of electric efficiency is influenceed present in compressor for prior art, to effectively improve motor work Efficiency, the motor of compressor is especially improved, especially the stator core part to motor.According to of the present utility model In a first aspect, provide firstly a kind of stator core, as shown in Figure 2, Figure 4 shows, the stator core includes the multi-disc stator punching laminated Piece 1, the thickness of monolithic stator punching 1 are usually more than 0.5mm, and stator punching 1 is the circular ring plate with central through hole 4, stator Be provided with the anchor ring of punching 1 axially through and circumferentially spaced arrangement multiple stator slots 2, adjacent stator slot 2 limits Go out stator tooth 5, the radial inner end of stator tooth 5 is stator tooth boots 51, and connected entrance 3 is spaced apart the stator tooth boots of the stator tooth 5 of both sides 51。

Wherein, to coordinate coiling, stator slot 2 is formed as the substantially rectangular groove radially extended, the bond length of stator slot 2 For D.Especially, the radial inner end of stator slot 2 is also formed with connected entrance 3, and connected entrance 3 penetrates and radially connects center vertically Through hole 4, circumferential openings width of the connected entrance 3 at the inner peripheral of stator punching 1 are a, and are met：A/D=0.1~0.5.

Described in brought forward, increase to change the leakage field of stator tooth 5 caused by the stator slot of the closed slot structure shown in Fig. 3, And then the problem of influenceing the conduction of armature field and main flux, the utility model especially on the basis of closed slot structure, if Connected entrance 3 is counted, i.e. stator slot 2 uses hatch frame.The radially inner side of stator slot 2 forms opening, can no doubt improve teeth groove and turn Square, i.e. noise increase, but inventor draws on the basis of multi-party trial, summary and repetition test, measuring and calculating, is limited in A/F System its raising DeGrain to cogging torque, but can significantly reduce the leakage of stator tooth 5 in the case of compared with minizone Magnetic, electric efficiency is substantially improved.

Specifically, the circumferential openings width when connected entrance 3 at the inner peripheral of stator punching 1 is a, and is met：A/D= When 0.1~0.5, especially a/D=0.2~0.5, calculated by electromagnetism, the setting of connected entrance 3 (about 2% width only a little Degree) improve cogging torque, i.e. noise elevating effect is very little, but can largely reduce the leakage field of stator tooth 5, finally Significantly (0.6%) improves electric efficiency.

Referring to Fig. 4,3 preferably rectangular connected entrance of connected entrance therein, i.e. the circumferential openings width everywhere of connected entrance 3 is equal It is identical.Preferably, OO ', i.e. connected entrance 3 are arranged on the footpath of stator slot 2 to the midline with common footpath for connected entrance 3 and stator slot 2 The middle part of inboard end so that the width of the stator tooth boots 51 of each stator tooth 5 is identical.

Referring to Fig. 5, in the connected entrance 3 of another structure type, connected entrance 3 is formed as radially outer open shape, i.e., Circumferential openings width a of the connected entrance 3 at the inner peripheral of stator punching 1 is the minimal openings width of connected entrance 3, and connected entrance 3 exists Circumferential openings width b at the radial inner end wall of stator slot 2 is the maximum open width of connected entrance 3.By increasing connected entrance 3 The A/F of radial outer end, the principle walked according to magnetic flux along resistance minimum direction, the circumferential openings width b of increase connected entrance 3 The leakage field of 51 big reluctance magnetic path of reduction stator tooth boots, the operating efficiency of further lifting motor can be achieved.Wherein, it is circumferential to expand A/F b and take into account easy to process and coiling and fix needs, the numerical value or ratio between each dimensional parameters set preferably full Foot：A/b=0.5~0.8, and/or b/D=0.2~0.5.

In Fig. 4, Fig. 5, the bond length D of stator slot 2 is both preferably 1.6mm~4.2mm.According to existing compressor of air conditioner Common power scope (0.5 watt~5000 watts), the outside diameter d 1 of the stator punching 1 of its motor is normally controlled in 80mm~160mm In the range of.For multiple-grooved rectangular groove structure motor of the present utility model, it usually needs ensure that stator slot 2 has enough grooves to cut Face area can be put into the stator winding (such as enamel-cover copper rectangular winding wire) of at least 4 or more, thus generally by stator punching Internal diameter d2 and the ratio of outside diameter d 1 are arranged on 0.5~0.6, i.e., the internal diameter d2 scope controls of stator punching 1 are in 40mm~96mm.This Outside, compressor 300 is generally run under DC bus-bar voltage 300V~500V Power Supplies Condition, and motor certainly will need to also set conjunction Suitable Anti-electromotive so that motor running is under high efficiency operating mode.To obtain suitable Anti-electromotive, stator slot 2 Quantity should be preferably controlled within the range of 36~72.

Thus, according to above parameter and considering the reasonable layout of the magnetic flux density of stator tooth 5, the short side of rectangular stator groove 2 Length D preferred length scope is 0.9mm~4.2mm.But then, multiple-grooved rectangular groove structure motor typically uses multistage Enamel-cover copper rectangular winding wire is connected to become armature coil 30 by limited number of time, therefore the utility model also should be in accordance with national standard GB/T 7095.1-2008 to the regulation of enamel-cover copper rectangular winding wire.In the regulation, the minimum conductor bond length of enamel-cover copper rectangular winding wire For 0.8mm, nominal film thickness 0.085mm.And to meet motor proof voltage requirement, also need to insert in stator slot The PET material of 0.125mm~0.25mm thickness is as insulating materials 20, referring to Fig. 1.Above material passes through about 0.05mm-0.1mm Gap coordinate be inserted into stator slot 2.Dimensions above, which has been superimposed, to be limited the short side width of rectangular stator groove 2 and need to be more than 1.6mm, therefore the preferred bond length D for drawing rectangular stator groove 2 scope is above-mentioned 1.6mm~4.2mm.

To sum up, can be simultaneous using the compressor 300 and its motor of the stator core according to first aspect of the present utility model Care for relatively low less with the leakage field of the stator tooth 5, low noise of motor cogging torque, the plurality of advantages of high workload efficiency.

According to second aspect of the present utility model, another stator core is additionally provided, as shown in Fig. 3, Fig. 6, the stator Iron core 10 equally includes the multi-disc stator punching 1 laminated, and the thickness of monolithic stator punching 1 is usually more than 0.5mm, stator punching 1 is preferably circular ring plate, be provided with the anchor ring of stator punching 1 axially through and circumferentially spaced arrangement multiple stator slots 2. Wherein, stator slot 2 is the rectangular channel radially extended, and the corner of rectangular channel is uniquely formed as rounded corner 21, that is, fallen Fillet processing.

It can be seen that it is too small to change the minimum widith of stator tooth 5 (as shown in Figures 4 to 6) trapezoidal in the prior art, cause The close excessively saturation of teeth portion magnetic, and then greatly improve iron loss, the problem of influenceing electric efficiency, the utility model pointedly devises The shape of rectangular stator groove 2, on the basis of substantially rectangular elementary contour is not changed, the rounded corner 21 of optimization design corner, The minimum widith and area of stator tooth 5 can be increased, the magnetic of reduction stator tooth boots 51 is close, improves the conduction of main flux.In addition, rounding Angle design can coordinate the technique fillet of rounded corner 21 and winding conductor in groove so that maximally utilize groove area so that motor There is higher stator copper factor, so as to final lifting motor efficiency.

In theory, stator winding has been passed around in stator slot 2, now the radius of corner of the semiconductor process fillet of stator winding should Less than the radius of corner of the rounded corner 21 of stator slot 2, so as to which stator winding can be close on the curved wall of rounded corner 21, carry High stator copper factor.

Specifically, can be most when the geomery of stator slot 2 and the cross sectional shape matching size of enamel-cover copper rectangular winding wire close Bigization utilizes groove area, ensures higher copper factor, and most important of which key element is the cooperation of semiconductor process fillet size.

The conductor fillet of enamel-cover copper rectangular winding wire is provided according to national standard GB/T 7095.1-2008：Conductor bond length model It is trapped among between 0.8~1.0mm, conductor radius of corner is the 1/2 of conductor short side；Conductor bond length scope 1.0~ Between 1.60mm, conductor radius of corner is 0.5mm；Conductor bond length scope is between 1.6~2.24mm, conductor fillet Radius is 0.65mm；Conductor bond length scope is between 2.24~3.4mm, radius of corner 0.8mm.

Conductor radius of corner preferably draws rectangular stator groove 2 after being superimposed the size of paint film, insulating materials 20, process gap Fillet size, and the bond length D of rectangular stator groove 2 defines conductor bond length, therefore preferably show that rectangle is determined The bond length D and radius of corner R of pilot trench 2 ratio meet relation：The radius of corner of D/R=2~4, i.e. rounded corner 21 is maximum No more than D/2, minimum should be greater than D/4, more than semiconductor process fillet.

As it was previously stated, in the compressor electric motor of application to conventional air-conditioning, the bond length D of stator slot 2 is preferably 1.6mm ~4.2mm, it is no longer repeated herein.In the case, accordingly, the radius of corner R of the rounded corner 21 of stator slot 2 is preferably 0.5mm~2mm.

Wherein, rectangular stator groove 2 is provided preferably with four rounded corners 21, and each radius of corner all same, to improve stator Copper factor.The sectional area of stator slot 2 is likewise provided as passing through the stator winding of at least four parallel.

It can be seen that two neighboring stator slot 2 limits stator tooth 5, the geomery of stator slot 2 limits the chi of stator tooth 5 It is very little, therefore the fillet of stator slot 2 rationally sets size, can ensure the constant situation of the copper factor of motor, as wide as possible Increase the width of stator tooth 5, it is close to reduce tooth magnetic.

Further, can also be integrated according to the stator core of second aspect of the present utility model shown in Fig. 2 according to this reality With the design of the stator core of new first aspect, i.e. the radial inner end of stator slot 2 is formed with connected entrance 3, and connected entrance 3 is along axle Connect to insertion and radially central through hole 4.When circumferential openings width of the connected entrance 3 at the inner peripheral of stator punching 1 is a, When the bond length of stator slot 2 is D, preferably meet：A/D=0.1~0.5, more preferably a/D=0.2~0.5.It brings The advantages of as it was previously stated, also no longer carefully stating one by one herein.

To sum up, can according to the stator core of second aspect of the present utility model when being applied to compressor 300 and its motor To take into account higher copper factor and the close reasonable setting of teeth portion magnetic, possesses the advantages of low noise, high workload efficiency.

Fig. 1 is according to the structural representation of the motor for compressor 300 of preferred embodiment of the present utility model, is somebody's turn to do Motor employs the stator core 10 according to first aspect of the present utility model shown in Fig. 2.Wherein, the motor is by stator 100 Formed with rotor 200.Stator 100 is made up of stator core 10, insulating materials 20, armature coil 30.Stator core 10 is by multi-disc Stator punching 1 is overrided to form, and the inner circumferential of stator punching 1 has multiple along its circumferentially-spaced stator slot 2 for opening arrangement.In stator slot 2 Insertion is provided with armature coil 30 and insulating materials 20 by being formed as the enamel-cover copper rectangular winding wire of stator winding.Rotor 200 are made up of the rotor core 40 being placed in central through hole 4 and the magnet 50 being fixed in the magnet groove of rotor core 40, so as to The permasyn morot of diagram is constituted, available for compressor 300 is driven, as shown in Figure 7.

In the figure 7, compressor of air conditioner 300 is by motor drive operational of the present utility model.As illustrated, the compressor of air-conditioning 300 also include the compression members such as cylinder 303, base bearing 302, supplementary bearing 305, bent axle 301 and piston 304.At work, motor Stator 100 connect electricity, driving rotor rotation, and then rotated with dynamic crankshaft 301, the then piston in drive cylinder 303 of bent axle 301 304 linearly move back and forth.Other compositions of compressor 300 and operation are all known for those of ordinary skills , it is not described in detail herein.

Preferred embodiment of the present utility model, still, the utility model and unlimited is described in detail above in association with accompanying drawing Detail in above-mentioned embodiment, can be to skill of the present utility model in range of the technology design of the present utility model Art scheme carries out a variety of simple variants, such as connected entrance 3 is not limited to the rectangle of diagram, radially outer bell shape, may be used also To be the other shapes structure such as Pear-Shaped, spindle, these simple variants belong to the scope of protection of the utility model.

It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance In the case of shield, it can be combined by any suitable means, in order to avoid unnecessary repetition, the utility model is to each The possible combination of kind no longer separately illustrates.

In addition, it can also be combined between a variety of embodiments of the present utility model, as long as it is not disobeyed Thought of the present utility model is carried on the back, it should equally be considered as content disclosed in the utility model.

Claims (10)

1. a kind of compressor, including for driving the motor of compressor (300), it is characterised in that the motor includes what is laminated Multi-disc stator punching (1), the stator punching (1) are circular ring plate, are provided with the anchor ring of the stator punching (1) and pass through vertically Wear and multiple stator slots of circumferentially spaced arrangement (2), the stator slot (2) is the rectangular channel radially extended, the rectangle The corner of groove is formed as rounded corner (21)；

Wherein, bond length D=1.6mm~4.2mm of the stator slot (2), the radius of corner of the rounded corner (21) is R, And meet：D/R=2~4.

2. compressor according to claim 1, it is characterised in that stator winding has been passed around in the stator slot (2), it is described The radius of corner of the semiconductor process fillet of stator winding is less than the radius of corner of the rounded corner (21) of the stator slot (2).

3. compressor according to claim 1, it is characterised in that the radius of corner R=0.5mm of the rounded corner (21)~ 2mm。

4. compressor according to claim 1, it is characterised in that the external diameter of the stator punching (1) is d1, and internal diameter is D2, and meet：D1=80mm~160mm, d2/d1=0.5~0.6.

5. compressor according to claim 4, it is characterised in that the stator slot in each stator punching (1) (2) number is 36~72.

6. compressor according to claim 1, it is characterised in that four circles of the stator slot (2) of rectangle fall The radius of corner at angle (21) is identical.

7. compressor according to claim 1, it is characterised in that the radial inner end of the stator slot (2) is formed with connection Mouth (3), the connected entrance (3) penetrate and radially connect the central through hole (4) of the stator punching (1), the company vertically Circumferential openings width of the port (3) at the inner peripheral of the stator punching (1) is a, and the bond length of the stator slot (2) is D, and meet：A/D=0.1~0.5.

8. the compressor according to any one in claim 1~7, it is characterised in that the motor includes stator (100) With rotor (200), the stator (100) is determined including what armature coil (30) and the stator punching (1) as described in multi-disc were overrided to form Sub- iron core (10), the armature coil (30) are arranged in the stator slot (2), and the rotor (200) is described including being arranged on Rotor core (40) in the central through hole (4) of stator punching (1) and the magnet (50) in the rotor core (40).

9. compressor according to claim 8, it is characterised in that the armature coil (30) includes wearing as stator winding The enamel-cover copper rectangular winding wire being around in the stator slot (2).

10. a kind of air-conditioning, it is characterised in that the air-conditioning includes the compressor according to any one in claim 1~9 (300)。