CN205911852U - Rotor for motor, motor and compressor - Google Patents

Abstract

The utility model provides a rotor for motor, the rotor includes: a rotor body having a generally cylindrical shape; and a protrusion provided on an axial end surface of the rotor body for connection with a weight so as to be opposed to the weight with respect to a rotation axis of the rotor. The utility model also provides a motor and a compressor.

Description

For the rotor of motor, motor and compressor

Technical field

This utility model is related to a kind of rotor for motor, and this utility model further relates to a kind of motor and a kind of compression Machine.

Background technology

The content of this part provide only the background information related to this utility model, and it may not constitute existing skill Art.

Compressor particularly screw compressor generally utilizes eccentric center principle to drive by the eccentric crank pin of rotary shaft end Dynamic vortex part makees track motion with respect to determine vortex part.Due to the end of rotary shaft and the eccentric setting of other parts, make Obtain rotary shaft and produce uneven centrifugal force in rotary course, and thus cause the vibration of compressor.In order to as much as possible Reduce the vibration in compressor operation it will usually balance weight be installed on the rotor rotating together with rotary shaft to carry For reverse centrifugal force, thus offsetting the uneven centrifugal force of rotary shaft generation.

In existing compressor it is sometimes desirable on the lower surface that balance weight is arranged on rotor.However, some Under specific operation, the balance weight being arranged on rotor lower surface can be contacted with the lubricating oil being gathered in compression motor spindle, Even it is immersed in described lubricating oil so that this balance weight constantly stirs lubricating oil in its rotational trajectory, it is unnecessary to cause Energy loss.

Utility model content

One purpose of one or more embodiment of the present utility model is that offer is a kind of can reduce energy loss The improved rotor for motor.

Another purpose of one or more embodiment of the present utility model is to provide one kind can reduce balance weight (spy It is not in lubricating oil) rotor for motor of resistance that rotates.

Another purpose of one or more embodiment of the present utility model is to provide a kind of electricity including above-mentioned rotor Machine and a kind of compressor of this motor of inclusion.

According to one side of the present utility model, there is provided a kind of rotor for motor, described rotor includes:

Rotor body, described rotor body is generally cylindrical；And

Protuberance, described protuberance be arranged on described rotor body for the axial end being connected with balance weight, with phase Rotation axiss for described rotor are opposed with described balance weight.

Preferably, described protuberance is integrally formed with described rotor body.

Preferably, described protuberance and described rotor body are linked together by bindiny mechanism.

Preferably, described bindiny mechanism includes the lobe being arranged on described rotor body and is arranged on described protuberance For the recess with described raised portion fits.

Preferably, described rotor body has centre bore, to allow rotary shaft to fit through described centre bore, described protuberance And/or described balance weight connects to described rotary shaft.

Preferably, described protuberance and described balance weight form general toroidal structure.

Preferably, described general toroidal structure has the inner peripheral surface corresponding with described rotor body and outer peripheral face.

Preferably, the circumferential end faces of described protuberance are in the form of convex surface, concave surface or plane.

Preferably, head and the tail mutually abut described protuberance in circumferential direction with described balance weight.

Preferably, the circumferential end faces mating shapes of the circumferential end faces of described protuberance and described balance weight.

Preferably, described protuberance and described balance weight form continuous and complete loop configuration.

Preferably, head and the tail are relative in circumferential direction and have circular gap with described balance weight for described protuberance；And/or Protuberance described in person have radially or circumferential direction extend slit or breach.

Preferably, the density of material of described protuberance is less than the density of material of described balance weight；And/or described protuberance is Hollow.

According to another aspect of the present utility model, there is provided a kind of motor, described motor includes the rotor described in literary composition.

According to another aspect of the present utility model, there is provided a kind of compressor, described compressor is included according to literary composition Motor.

According to one or more embodiment of the present utility model for the rotor, motor and compressor of motor advantage At least that: for installing, protuberance is arranged on the axial end of balance weight in rotor, to reduce the rotation being located at described balance weight Lubricating oil in transition mark, such that it is able to reduce the resistance that balance weight rotates in lubricating oil, reduces energy loss.

By explanation provided herein, other applications will be apparent from.It should be understood that the spy described in this part Determine example and embodiment is for illustration purposes only rather than attempts to limit scope of the present utility model.

Brief description

Accompanying drawing as described herein is only in order at illustration purpose and is not intended to limit by any way of the present utility model Scope, accompanying drawing is not necessarily drawn to scale, and can zoom in or out some features to show the details of particular elements.In the accompanying drawings:

Fig. 1 shows the sectional side elevation of the compressor according to the various embodiments of the utility model；

Fig. 2 a shows rotor according to an embodiment of the present utility model, rotary shaft and balance weight and is assemblied in one The axonometric chart rising；

It is vertical that Fig. 2 b shows rotor according to an embodiment of the present utility model and balance weight is assembled together Body figure；

Fig. 2 c shows rotor according to an embodiment of the present utility model and balance weight decomposes the solid of assembling Figure；

Fig. 3 shows the axonometric chart of the rotor according to an embodiment of the present utility model；

The example that Fig. 4 a and Fig. 4 b shows for being attached to the rotor according to embodiment of the present utility model is mild-natured The axonometric chart of weighing apparatus block；

Fig. 5 shows the axonometric chart of rotor according to another embodiment of the present utility model and balance weight；

Fig. 6 shows the axonometric chart of the rotor according to another embodiment of the present utility model；

Fig. 7 shows the axonometric chart of the rotor according to another embodiment of the present utility model；

Fig. 8 shows the axonometric chart of the rotor according to another embodiment of the present utility model, wherein, protuberance and rotor Body is linked together by bindiny mechanism；And

Fig. 9 shows the axonometric chart of the rotor according to another embodiment of the present utility model, wherein, protuberance and rotor The integral shaping of body design.

It should be appreciated that in all these accompanying drawings, corresponding reference number indicates similar or corresponding part and feature. For purposes of clarity, all parts in accompanying drawing are not marked.

Specific embodiment

Hereafter description related to the preferred embodiment be only substantially exemplary and be not intended to limit this utility model.

The essential structure of the compressor 10 according to the various embodiments of the utility model is described now with reference to Fig. 1.

Compressor 10 is, for example, screw compressor, including substantially cylindrical housing 12.Described housing 12 is arranged There is inlet suction port (mark) for sucking the gaseous refrigerant of low pressure.One end of described housing 12 is (on as shown in Figure 1 End) it is fixedly connected with end cap 14.End cap 14 be equipped with discharge joint (mark) for discharge compress after cold-producing medium.In housing It is additionally provided between 12 and end cap 14 and extends generally vertically with respect to the axial direction of housing 12 (as in FIG along approximate horizontal Direction extend) dividing plate 16, thus the inner space of compressor 10 is separated into high-pressure side space and low-pressure side space.End cap 14 Space composition high-pressure side space and dividing plate 16 between, and the space between dividing plate 16 and housing 12 constitutes low-pressure side space.

It is equipped with housing 12 as the dynamic vortex part 20 of scroll component and determine vortex part 30 and as driving machine The motor 40 of structure and rotary shaft 50.Scroll component can be driven by drive mechanism, and drive mechanism is supported by main bearing seat 70 grade.Main shaft Bearing 70 (as riveted) can be fixed to housing 12 in any desired way.Certainly, main bearing seat 70 can also be with housing 12 Integrally formed.

Motor 40 includes stator 42 and rotor 100.Stator 42 is fixedly connected with housing 12.Rotor 100 is solid with rotary shaft 50 Fixed connection and rotation in stator 42.

One end (upper end as in Fig. 1) of rotary shaft 50 is provided with eccentric crank pin 52.The eccentric crank pin of rotary shaft 50 52 are inserted in the hub portion 26 of dynamic vortex part 20 via bushing (sign) with rotation driving dynamic vortex part 20.In dynamic vortex When part 20 makees circumferential track motion with respect to determine vortex part 30, formed between dynamic vortex part 20 and determine vortex part 30 Fluid cavity moves to the center of dynamic vortex part 20 and determine vortex part 30 from radially external position and is compressed.Fluid The fluid that intracavity is compressed is discharged via the air vent (mark) being arranged on determine vortex part 30 center.

Because the eccentric structure of the eccentric crank pin 52 in such as rotary shaft 50 etc is so that rotary shaft 50 is in rotary course Middle can produce uneven centrifugal force, thus lead to vibration of compressor.For this reason, would generally be on the bottom of rotor 100 Setting balance weight 60 (see Fig. 2 a), thus be balanced to the eccentric structure in rotary shaft 50.

The bottom of housing 12 is also configured with the oil sump 80 for accommodating lubricating oil.Rotary shaft 50 is provided with and oil sump 80 The pump oil passage (mark) being in fluid communication, the lubricating oil in oil sump 80 is booted up supply to part to be lubricated.

Under application-specific condition or operating mode, such as in the case that a large amount of cold-producing mediums are dissolved in lubricating oil, oil sump 80 In lubricating oil liquid level can raise (higher) thus contacting with the balance weight of rotor 100 lower end, or even be totally submerged this put down Weighing apparatus block.In this case, the balance weight as eccentric part can constantly stir in the rotary course with rotor 100 and be located at Lubricating oil in its rotational trajectory, produces unnecessary energy loss.

In view of above-mentioned situation, according in the various embodiments of the utility model, flat for installing in rotor 100 Protuberance (see Fig. 2 a) is set up, to reduce the lubricating oil being located in the rotational trajectory of described balance weight, thus subtracting on the end of weighing apparatus block The resistance that little balance weight rotates in lubricating oil, reduces energy loss.

The rotor 100 of the inclusion protuberance according to an embodiment of the present utility model is described below with reference to Fig. 2 a to 2c And its essential structure of balance weight 60.

Rotor 100 includes rotor body 110, and rotor body 110 is substantially cylindrical and has axially extended center Hole, rotary shaft 50 extends through this centre bore to be fixedly connected such that it is able to revolve together with following rotor 100 with rotor body 110 Turn.

Rotor 100 also includes protuberance 120, and protuberance 120 is arranged on the axial end portion of rotor body 110 (as shown in Figure 2 a Bottom) on.What balance weight 60 was fixedly provided in rotor body 110 is provided with the axial end portion of protuberance 120 (as shown in Figure 2 a Bottom) upper so that protuberance 120 is opposed with balance weight 60 with respect to the rotation axiss of rotor 100.It need to be noted that It is that sentence " protuberance 120 is opposed with balance weight 60 with respect to the rotation axiss of rotor 100 " is intended to mean that at least the one of protuberance 120 Part is symmetrical with respect to the rotation axiss of rotor 100 with least a portion of balance weight 60.Especially, rotor body 110 with flat Weighing apparatus block 60 is linked together by bindiny mechanism's (will be described below).This protuberance 120 is located substantially at the balance weight of c shape At 60 opening, to form substantially complete loop configuration with balance weight 60.With regard to not having the rotor of protuberance in prior art and Speech, can there are a lot of lubricating oil in (that is, between two circumferential end faces of balance weight) in the opening of balance weight, and these are present in flat In the circumferential end faces that lubricating oil on the rotational trajectory of weighing apparatus block can act on balance weight when balance weight rotates, thus hindering balance The rotary motion of block, leads to unnecessary energy loss.

According in embodiment of the present utility model, as shown in Figure 2 b, protuberance 120 forms general toroidal with balance weight 60 Structure so that the opening of balance weight 60 is filled by protuberance 120 at least in part, thus decreasing the rotation being present in balance weight 60 The amount of the lubricating oil in track and/or reduce the practical function that the circumferential end faces of balance weight 60 are interacted with described lubricating oil Face.Thus, reduce the resistance that balance weight 60 rotates in lubricating oil.

Preferably, balance weight 60 is in circular arc and has the external shape corresponding with rotor body 110.Similarly, Protuberance 120 is also in circular arc and has the external shape corresponding with rotor body 110.This makes protuberance 120 and balance weight The general toroidal structure of 60 formation has the inner peripheral surface corresponding with rotor body 110 and outer peripheral face.It is highly preferred that circular arc Head and the tail mutually abut in circumferential direction for protuberance 120 and balance weight 60, to form the loop configuration of complete closure.

In a preferred embodiment, the circumferential end faces of protuberance 120 closely can be joined each other with the circumferential end faces of balance weight 60 Close, to reduce the practical function face even completely eliminating balance weight 60 and lubricating oil.In a preferred embodiment, protuberance 120 He Balance weight 60 can have identical circumferential cross-section (cross section), thus be fitted to each other forming complete loop configuration.This makes No longer there is lubricating oil in the rotational trajectory of balance weight 60, and the circumferential end faces of balance weight 60 are no longer interacted with lubricating oil, from And resistance that balance weight 60 in lubricating oil rotate has been greatly reduced.

Describe the knot according to rotor 100 of the present utility model and balance weight 60 below with reference to Fig. 3 and Fig. 4 a to 4b in detail Structure.

As shown in figure 3, rotor body 110 includes the axial end 112 for being connected with balance weight 60, protuberance 120 is arranged On this axial end 112.Specifically, protuberance 120 is axially extending from the part toroidal faces (curved surfaces) of axial end 112 Go out length-specific, and there is the external shape corresponding with rotor body 110.In the present embodiment, the described axle of protuberance 120 It is substantially equal to the axial width of balance weight 60 to development length, with the lubrication being reduced as far as in the rotational trajectory of balance weight Oil.However, in other embodiments, the axial extension of protuberance 120 can be less than the axial width of balance weight 60.

In the present embodiment, as shown in figure 3, the circumferential cross-section of protuberance 120 shape in the form of a substantially rectangular.Protuberance 120 has Circumferential end faces a of planar formula, are matched with circumferential end faces m (as shown in fig. 4 a) of the equally planar formula with balance weight 60 Close.

Lobe 114, such as two shown in Fig. 3 lobe have also been fixedly disposed on axial end 112.Balance weight 60 Can be coordinated on rotor body 110 by this lobe 114 (interference).Lobe 114 can be and rotor body 110 one Part that ground shapes or connected by such as threaded, interference fit or other similar connections mode is fixed on and turns Part on sub- body 110.

In order to prevent the connection between lobe 114 and balance weight 60 prematurely to lose efficacy in use, can be flat Between weighing apparatus block 60 and rotary shaft 50, other bindiny mechanism is set.

Fig. 4 a shows for being attached to the exemplary balance block 60 according to rotor 100 of the present utility model.Balance weight 60 Installation portion 62 and counterweight part 64 can be included.Installation portion 62 is configured for balance weight 60 is attached to the axle of rotor body 110 To end face 112, this counterweight part 64 extends between installation portion 62.Especially, installation portion 62 is formed with for rotor body The recess 66 that lobe 114 on 110 matches, this recess 66 is, for example, the through hole shown in Fig. 4 a.Counterweight part 64 is formed For substantially circular arc, installation portion 62 is positioned at the circumferential two ends of counterweight part 64.In the embodiment illustrating in fig .4, balance weight 60 The planar formula of circumferential end faces m and can match with circumferential end faces a of protuberance 120.

Moreover, in other embodiments, balance weight 60 is also possible to the circumferential end faces with complexity.As Fig. 4 b institute Show, compared with the balance weight shown in Fig. 4 a, circumferential end faces m of the balance weight 60 of Fig. 4 b are in convex form.Additionally, balance weight 60 Counterweight part 64 has extended radially inwardly a segment distance compared to installation portion 62 so that counterweight part 64 has more heavy in section and bigger heavy Amount, therefore has bigger balanced capacity.Thus, yet forms both another circumferential end faces n at the circumferential end of counterweight part 64, should The end face n and end face m in convex form together constitutes the acting surface that may interact with lubricating oil.In consideration of it, The circumferential end faces of the protuberance 120 according to rotor 100 of the present utility model are also designed to common with by above-mentioned end face n and end face m The shape matching with the acting surface constituting, thus ensure that protuberance 120 and balance weight 60 can form closing and complete annular Structure.

In another embodiment of the present utility model, protuberance 120 and balance weight 60 can also form the annular do not closed Structure.Deposit as shown in figure 5, the protuberance 120 of curved shape is relative from beginning to end in circumferential direction with balance weight 60 but therebetween In circular gap l.This design does not need protuberance 120 to match in circumferential direction with balance weight 60, thus reducing convex Portion 120 and the machining accuracy of balance weight 60.In addition, the protuberance design that this circumferential lengths reduce makes the weight of protuberance itself more Little such that it is able to reduce the impact of the balanced action to balance weight causing due to setting up protuberance.And, this design also allows for Rotor is adapted to the balance weight of various shapes or specification.

Even if it has been discovered by the applicants that protuberance 120 is not filled up completely with the opening of balance weight 60, it still is able to be effectively reduced flat The resistance that weighing apparatus block 60 rotates in lubricating oil, improves energy efficiency.

Based on above-mentioned teaching, various following remodeling can be carried out to according to above-mentioned embodiment of the present utility model.For example, In alternative embodiment, the circumferential cross-section of protuberance 120 can be designed to circumferential cross-section less than balance weight 60 such that it is able to Compatible various shapes or the balance weight of specification, and own wt can be reduced, thus reducing the shadow of the balanced action to balance weight Ring.

Especially, the density of material according to protuberance of the present utility model can be chosen smaller than the density of material of balance weight, To reduce the impact of its balanced action to balance weight.In addition, protuberance can be hollow.

According in another embodiment of the present utility model, protuberance 120 itself can include slit or breach, to reduce Protuberance 120 weight of itself.As shown in fig. 6, protuberance 120 includes slit s.Substantially radially direction extends with by protuberance slit s 120 are circumferentially divided into multiple sections (such as three sections).Because the width of slit s (in circumferential direction) is less, thus During rotor rotation, hardly have (a large amount of) lubricating oil and pass in and out this slit s, thus not rotor 100 is produced with (larger) resistance Power.In other embodiments, protuberance 120 can also include other kinds of loss of weight slit or breach, for example circumferentially direction The slit extending.

According in another embodiment of the present utility model, circumferential end faces a of protuberance 120 can have in addition to planar Other forms, for example there is the form of convex surface or concave surface.As shown in fig. 7, circumferential end faces a of protuberance 120 are in convex form, this So that in the case of for example there is circular gap l (as shown in Figure 5) between protuberance 120 and balance weight 60, being conducive to lubricating oil Pass in and out this circular gap l, to weaken the interaction between lubricating oil and circumferential end faces a, improve energy efficiency.

According in another embodiment of the present utility model, protuberance 120 and rotor body 110 can be designed to two solely Vertical element and being linked together by bindiny mechanism.As shown in figure 8, with lobe 114 class for installing balance weight 60 Seemingly, the axial end 112 of rotor body 110 can also be fixedly disposed lobe 116, protuberance 120 passes through this lobe 116 install cooperation on rotor body 110.Lobe 116 can be the part formed integrally with rotor body 110, also may be used To be that the part on rotor body 110 is fixed on by such as threaded, interference fit connection or other similar connections mode.

Correspondingly, protuberance 120 is formed with the recess for matching with the lobe 116 on rotor body 110 126, this recess 126 is, for example, the through hole shown in Fig. 8.In the present embodiment, a recess 126 and phase can only be provided The lobe 116 answered, this recess 126 is arranged at mid portion or the barycenter of protuberance 120.In other embodiment In it is provided that multiple recess 126 and accordingly multiple lobe 116, the plurality of recess 126 for example can be circumferentially Direction is evenly distributed on protuberance 120.

In order to prevent the connection between lobe 116 and recess 126 prematurely to lose efficacy in use, can be convex It is provided with other bindiny mechanism between portion 120 and rotary shaft 50 (as shown in Figure 2 a).Even if it is to be herein pointed out convex In the case that portion 120 is integrally formed with rotor body 110, other company still can be set between protuberance 120 and rotary shaft 50 Connection mechanism.

The above-mentioned mounting design of protuberance 120 and balance weight 60 is conducive to directly existing rotor being improved, and make convex Portion 120 has similar mounting structure and assembling process to balance weight 60, thus simplifying mounting process.

According in another embodiment of the present utility model, protuberance 120 and rotor body 110 can be designed to be one 's.As shown in figure 9, protuberance 120 and rotor body 110 for example pass through casting or turnery processing is integrally formed.This unitary design Have the advantage that not increase additional components；Do not change manufacture and the assembling process of balance weight；And modified technique is more simple Single and with low cost.

To sum up, according to the rotor for motor of each embodiment above-mentioned of the present utility model, motor and compressor institute The Advantageous Effects that bring at least that: rotor be provided with protuberance on the axial end that is connected with balance weight, from And the resistance that balance weight rotates in lubricating oil can be reduced, improve energy efficiency.

It is pointed out that the rotor of the protuberance situation in balance weight non-dip lubrication oil is provided with according to the application Under still there is beneficial technique effect.Specifically, even if the amount of the lubricating oil for example in oil sump is less and then not in contact with balance In the case that block or balance weight are arranged on the upper surface of rotor, the lubrication that described balance weight still can be with disperse in compression case body Oil drops interact.In this case, the remaining to for the protuberance on the axial end that is connected with this balance weight of rotor Enough reduce the interaction with lubricating oil drop in compressor housing for this balance weight, reduce resistance during balance weight rotation, carry Energy-efficient.

Although it is pointed out that the various embodiments of the utility model is described with screw compressor for example, But compressor of the present utility model can also include other kinds of compressor.In addition, according to of the present utility model for motor Rotor and include the motor of this rotor and can be applied not only to compressor, other kinds of machinery can also be applied to.

It is pointed out that the reference of the directional terminology such as front, back, left, right, up, down is merely for the mesh describing in literary composition , embodiment of the present utility model direction in actual applications and orientation are not construed as limiting.

Although here described various embodiment of the present utility model in detail it should be appreciated that, this utility model It is not limited to the specific embodiment describing in detail here and illustrating, without departing from connotation of the present utility model and scope In the case of may be effected by one skilled in the art other modifications and remodeling.All these modifications and remodeling each fall within this reality With in new scope.

Reference numerals list

10 compressors

12 housings

14 end caps

16 dividing plates

20 dynamic vortex parts

26 hub portions

30 determine vortex parts

40 motors

42 stators

50 rotary shafts

52 eccentric crank pins

60 balance weights

62 installation portions

64 counterweight parts

66 recess

M circumferential end faces

N circumferential end faces

70 main bearing seats

80 oil sumps

100 rotors

110 rotor bodies

112 axial ends

114 lobe

116 lobe

120 protuberances

126 recess

A circumferential end faces

L circular gap

S slit.

Claims (15)

1. a kind of rotor for motor is it is characterised in that described rotor includes:

Rotor body, described rotor body is generally cylindrical；And

Protuberance, described protuberance be arranged on described rotor body for the axial end being connected with balance weight, with respect to The rotation axiss of described rotor are opposed with described balance weight.

2. rotor according to claim 1, wherein, described protuberance is integrally formed with described rotor body.

3. rotor according to claim 1, wherein, described protuberance and described rotor body are connected to one by bindiny mechanism Rise.

4. rotor according to claim 3, wherein, described bindiny mechanism includes the projection being arranged on described rotor body Portion and be arranged on described protuberance for the recess with described raised portion fits.

5. rotor according to claim 1, wherein, described rotor body has centre bore, to allow rotary shaft assembling to wear Cross described centre bore, described protuberance and/or described balance weight connect to described rotary shaft.

6. the rotor according to any one of claim 1 to 5, wherein, described protuberance is formed substantially with described balance weight Loop configuration.

7. rotor according to claim 6, wherein, described general toroidal structure has corresponding with described rotor body Inner peripheral surface and outer peripheral face.

8. rotor according to claim 6, wherein, the circumferential end faces of described protuberance are in the form of convex surface, concave surface or plane.

9. rotor according to claim 6, wherein, head and the tail mutually support in circumferential direction for described protuberance and described balance weight Connect.

10. rotor according to claim 9, wherein, the circumferential end faces of the circumferential end faces of described protuberance and described balance weight Mating shapes.

11. rotors according to claim 10, wherein, described protuberance and described balance weight form continuous and complete annular Structure.

12. rotors according to claim 6, wherein, head and the tail are relative in circumferential direction with described balance weight for described protuberance And there is circular gap；And/or

Described protuberance have radially or circumferential direction extend slit or breach.

13. rotors according to any one of claim 1 to 5, wherein, the density of material of described protuberance is less than described putting down The density of material of weighing apparatus block；And/or

Described protuberance is hollow.

A kind of 14. motors are it is characterised in that described motor includes the rotor according to any one of claim 1 to 13.

A kind of 15. compressors are it is characterised in that described compressor includes motor according to claim 14.