CN216390635U - External stator cooling structure and axial magnetic field motor - Google Patents
External stator cooling structure and axial magnetic field motor Download PDFInfo
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- CN216390635U CN216390635U CN202123059830.6U CN202123059830U CN216390635U CN 216390635 U CN216390635 U CN 216390635U CN 202123059830 U CN202123059830 U CN 202123059830U CN 216390635 U CN216390635 U CN 216390635U
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Abstract
The utility model provides an external stator cooling structure and an axial magnetic field motor, wherein the external stator cooling structure comprises a shell, the shell comprises a bottom plate, an outer side plate and an inner side plate, and the inner side plate and the outer side plate are connected to the inner periphery and the outer periphery of the bottom plate in the same direction so as to form a stator slot for mounting a stator between the inner side plate and the outer side plate; a cooling channel comprising a circumferential cooling flow channel that is externally disposed on the base plate away from the stator slots and extends to the interior of the outer side plate. The problem of stator insulation caused by cooling medium leakage is avoided, and the circumferential cooling flow channel is externally arranged on the outer end face of the bottom plate, so that the circumferential cooling flow channel is convenient to maintain and manufacture, the processing difficulty and cost are reduced, the consistency of products can be realized, and the yield is improved.
Description
Technical Field
The utility model relates to the field of axial magnetic field motors, in particular to an external stator cooling structure and an axial magnetic field motor.
Background
The motor is an electromagnetic device which realizes electric energy conversion or transmission according to the electromagnetic induction law, and the motor is mainly used for generating driving torque and serving as a power source of electric appliances or various machines. The motor can be divided into a radial magnetic field motor and an axial magnetic field motor, the axial magnetic field motor is also called a disk motor, and the axial magnetic field motor has the characteristics of small volume, light weight, short axial size, high power density and the like, can be used in most thin installation occasions, and is widely used.
The motor comprises a stator, a rotor and a shell for accommodating the stator and the rotor, wherein the stator is an electric stationary part and mainly comprises a stator iron core and a stator winding, and the stator is used for generating a rotating magnetic field so that the rotor is cut by magnetic lines of force in the magnetic field to generate current. The motor can be further divided into a single-stator single-rotor motor, a double-stator single-rotor motor, a single-stator double-rotor motor and the like according to the different numbers of the stators and the rotors.
However, in any kind of motor, various losses are generated during the operation of the motor, and further the motor generates heat. In order to improve the working efficiency of the motor, a cooling structure needs to be designed for the motor, and at present, a channel is formed in the housing, and a cooling medium is introduced into the channel to be in direct or indirect contact with a heating element, which is usually a stator core, so that the cooling effect is achieved. However, the existing channels and stators are arranged on the same side, so that various leakage prevention measures are needed to prevent the stator insulation problem possibly caused by the cooling medium, and the existing channels and stators are not easy to maintain and manufacture.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides an external stator cooling structure and an axial magnetic field motor, which are convenient to maintain and manufacture, improve the rate of finished products and reduce the production cost.
According to an object of the present invention, there is provided an external stator cooling structure, including:
a housing including a bottom plate, an outer side plate and an inner side plate, the inner side plate and the outer side plate being connected to the inner and outer peripheries of the bottom plate in the same direction so that a stator slot for mounting a stator is formed between the inner side plate and the outer side plate;
a cooling channel comprising a circumferential cooling flow channel that is externally disposed on the base plate away from the stator slots and extends to the interior of the outer side plate.
Preferably, the circumferential cooling flow channel has a plurality of communicating circumferential flow channel grooves extending in the axial direction of the outer side plate and exposed on an outer end face of the bottom plate facing away from the stator groove.
Preferably, the outer wall of the outer plate is provided with a first inlet and a second inlet, the first inlet and the second inlet are respectively communicated with a circumferential runner groove, and the circumferential runner groove communicated with the first inlet and the second inlet is blocked.
Preferably, the cooling channel further includes an end face cooling flow channel, the end face cooling flow channel is disposed on the bottom plate in a manner of deviating from the stator slot, and is located in a region surrounded by the circumferential cooling flow channel.
As a preferred technical scheme, the end face cooling flow channel is provided with an end face left end, an end face right end and an end face flow channel body communicating the end face left end with the end face right end, wherein the end face left end and the end face right end are blocked and opposite through a flow blocking platform, so that the end face flow channel body is annular.
As a preferable technical solution, the end surface left end and the end surface right end respectively correspond to one circumferential channel groove, and the two circumferential channel grooves corresponding to the end surface left end and the end surface right end are blocked;
the shell is provided with a left through hole for communicating the left end of the corresponding end surface with the circumferential flow channel groove, and a right through hole for communicating the right end of the opposite end surface with the circumferential flow channel groove, and the left through hole and the right through hole are adjacently arranged on two sides of the flow blocking platform.
As a preferred technical scheme, a plurality of stator fixing platforms and a plurality of groups of turbulence assemblies are respectively arranged in the end face cooling flow channel.
Preferably, the cooling device further comprises an end cover, wherein the end cover is fixed on an outer end face, away from the stator slot, of the bottom plate so as to close the cooling channel.
Preferably, the sealing device further comprises a sealing member, and the sealing member is located between the end cover and the bottom plate.
According to another object of the present invention, the present invention further provides an axial magnetic field motor, which comprises the external stator cooling structures of the two embodiments;
the axial magnetic field motor further comprises two stators and a rotor, the two external stator cooling structures are abutted in a mode that the stator slots are opposite, so that the two stators and the rotor are located between the two external stator cooling structures, and one stator is arranged in each stator slot of each external stator cooling structure and abutted on the bottom plate, so that the rotor is kept between the two stators in an air gap mode.
As a preferred technical scheme, the circumferential cooling flow channels on the two external stator cooling structures are respectively communicated or blocked.
Compared with the prior art, the technical scheme has the following advantages:
the circumferential cooling flow channel is externally arranged on the outer end face of the bottom plate in a mode of deviating from the stator slot, so that the cooling medium in the circumferential cooling flow channel is completely isolated from the stator installed in the stator slot, and the problem of stator insulation caused by cooling medium leakage is avoided. And because the circumferential cooling flow channel is externally arranged on the outer end face of the bottom plate, the maintenance and the manufacture of the circumferential cooling flow channel are convenient, the processing difficulty and the cost are reduced, the consistency of products can be realized, and the rate of finished products is improved. In addition, the circumferential cooling flow channel extends to the inside of the outer side plate, the area of the circumferential cooling flow channel on the shell is increased, and the cooling effect on the stator is effectively improved. Through the combination of the end face cooling flow channel and the circumference cooling flow channel, the cooling effect on the stator is effectively improved. The stator fixing platform is used for fixing the stator in the stator slot through a fastener, and the turbulence assembly performs turbulence on the cooling medium to improve cooling performance and improve fixing effect.
The utility model is further described with reference to the following figures and examples.
Drawings
FIG. 1 is a perspective view of an external stator cooling structure according to the present invention;
FIG. 2 is a front view of the external stator cooling configuration of the present invention;
fig. 3 is a schematic structural view of the assembly of the end cap and the housing according to the present invention.
Detailed Description
The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the utility model, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.
As shown in fig. 1 and 2, the external stator cooling structure 100 includes:
a housing 110, said housing 110 comprising a bottom plate 111, an outer plate 112 and an inner plate, said inner plate and said outer plate 112 being connected to the inner and outer peripheries of said bottom plate 111 in the same direction, so that a stator slot for mounting a stator is formed between said inner plate and said outer plate 112;
a cooling channel comprising a circumferential cooling channel 130, said circumferential cooling channel 130 being externally disposed on said base plate 111 away from said stator slots, and said circumferential cooling channel 130 extending into the interior of said outer side plate 112.
The circumferential cooling flow channel 130 is externally arranged on the outer end face of the bottom plate 111 in a mode of deviating from the stator slot, so that the cooling medium in the circumferential cooling flow channel 130 is completely isolated from the stator installed in the stator slot, and the problem of stator insulation caused by cooling medium leakage is avoided. And because the circumferential cooling flow channel 130 is externally arranged on the outer end face of the bottom plate 111, the maintenance and the manufacture of the circumferential cooling flow channel are convenient, the processing difficulty and the cost are reduced, the consistency of products can be realized, and the yield is improved. In addition, the circumferential cooling channel 130 extends to the inside of the outer side plate 112, so that the area of the circumferential cooling channel on the housing 110 is increased, and the cooling effect on the stator is effectively improved.
As shown in fig. 1 and 2, the circumferential cooling flow channel 130 has a plurality of communicating circumferential flow channel grooves 131, and the circumferential flow channel grooves 131 extend in the axial direction of the outer side plate 112 and are exposed on the outer end face of the bottom plate 111 facing away from the stator slots.
By providing the circumferential flow channel groove 131 so that the cooling medium flows in the axial direction of the outer plate 112, the area of the circumferential cooling flow channel 130 is increased, and the cooling performance of the stator is improved.
As shown in fig. 1, a first inlet/outlet 140 and a second inlet/outlet 150 are formed on an outer wall of the outer plate 112, the first inlet/outlet 140 and the second inlet/outlet 150 are respectively communicated with a circumferential channel groove 131, and the circumferential channel groove 131 communicated with the first inlet/outlet 140 and the second inlet/outlet 150 is blocked so that the cooling medium can pass through the circumferential cooling channel 130 irreversibly.
As shown in fig. 1 and 2, the cooling channel further includes an end face cooling flow passage 120, and the end face cooling flow passage 120 is disposed on the base plate 111 in a manner of deviating from the stator slot and is located in an area surrounded by the circumferential cooling flow passage 130.
Through setting up the terminal surface cooling flow channel 120 to directly dispel the heat to the stator that directly contacts bottom plate 111, with circumference cooling flow channel 130 cooperates, further promotes the cooling effect to the stator, with the reliable operation of assurance stator. In addition, the end face cooling flow channel 120 is also externally disposed on the outer end face of the bottom plate 111, which also achieves the advantages of easy maintenance, easy manufacturing, and low cost.
Specifically, the end face cooling flow channel 120 has an end face left end 121 and an end face right end 122, and an end face flow channel body 123 communicating the end face left end 121 and the end face right end 122, wherein the end face left end 121 and the end face right end 122 are blocked and opposed by a flow blocking table 124, so that the end face flow channel body 123 is annular. So that the cooling medium flows through the end surface flow channel body 123 irreversibly, and the area of the end surface cooling flow channel 120 on the bottom plate is increased, thereby improving the cooling performance.
The width of the flow blocking table 124 is as short as possible, so as to increase the area of the end surface cooling flow channel 120, and improve the heat exchange effect of the end surface cooling flow channel 120 on the stator.
More specifically, each of the end face left end 121 and the end face right end 122 corresponds to one of the circumferential flow channel grooves 131, and the two circumferential flow channel grooves 131 corresponding to the end face left end 121 and the end face right end 122 are blocked;
the housing 110 is formed with a left through hole 125 communicating the left end 121 and the circumferential channel groove 131, and a right through hole 126 communicating the right end 122 and the circumferential channel groove 131, and the left through hole 125 and the right through hole 126 are adjacently disposed at both sides of the baffle table 124. In this way, the end face cooling flow passage 120 and the circumferential cooling flow passage 130 can be connected in series so that the cooling medium passes through the end face cooling flow passage 120 and the circumferential cooling flow passage 130 in an irreversible manner, wherein the order in which the cooling medium passes through the end face cooling flow passage 120 and the circumferential cooling flow passage 130 is determined by the first inlet/outlet port 140 and the second inlet/outlet port 150.
In one embodiment, the first port 140 is an inlet, the second port 150 is an outlet, wherein the cooling medium enters from the first inlet/outlet 140 and flows into the circumferential cooling channel 130, since the first inlet/outlet 140 and the second inlet/outlet 150 are blocked, the cooling medium flows counterclockwise to the right end of the circumferential cooling flow passage 130, flows to the end surface right end 122 through the right through hole 126, then flows clockwise through the end face runner body 123 until it flows to the end face left end 121, flows to the left end of the circumferential cooling flow channel 130 through the left through hole 125, then flows through the circumferential cooling flow channel 130 counterclockwise, flows to the circumferential cooling flow channel 130 opposite to the second inlet/outlet 150, and is finally discharged through the second inlet/outlet 150, so as to implement heat exchange and cooling operations. The cooling medium includes a liquid such as water or oil. The cooling medium cools the end face of the stator that is in contact with the base plate 111 first, then passes through the circumferential cooling channels 130 in the outer plate 112 and cools it.
In another embodiment, when the first port 140 is an outlet, and the second port 150 is an inlet, the cooling medium enters from the second port 150, and because the first port 140 and the second port 150 are blocked, the cooling medium flows clockwise to the right end of the circumferential cooling channel 130, flows to the left end 121 of the end face through the right through hole 126, flows counterclockwise through the end face channel body 123 until it flows to the right end 122 of the end face, flows to the right end of the circumferential cooling channel 130 through the right through hole 126, flows clockwise to the circumferential cooling channel 130 opposite to the first port 140, and is finally discharged through the first port 140. The cooling medium now passes first through the circumferential cooling channels 130 of the outer plate 112 and finally through the end face cooling channels 120 of the base plate 111.
As shown in fig. 1 and 2, a plurality of stator fixing stages 127 and a plurality of groups of spoiler assemblies 128 are respectively disposed in the end face cooling flow passage 120. The stator fixing table 127 is used for fixing the stator in the stator slot through a fastener, and the flow disturbing assembly 128 carries out turbulence on the cooling medium to improve the cooling performance and improve the fixing effect.
Specifically, the plurality of stator fixing platforms 127 are integrally connected to the outer wall of the end face cooling flow channel 120, the plurality of stator fixing platforms 127 are arranged at equal intervals, and a set of spoiler assemblies 128 is arranged between two adjacent stator fixing platforms 127.
The stator fixing table 127 is used for fixing a stator, and specifically, the stator fixing table 127 includes a fixing cylindrical portion and a fixing connecting portion, the fixing connecting portion is integrally connected to an outer wall of the end face cooling flow channel 120, and a gap exists between the fixing cylindrical portion and an inner wall of the end face cooling flow channel 120, wherein a through hole is formed in a center of the fixing cylindrical portion, and after the stator is installed on the stator slot, a bolt passes through the through hole to be screwed with the stator, so that the stator is fixed on the base plate 111.
The turbulence group 128 is used for realizing turbulence so as to improve the flow velocity of the cooling medium, increase the contact area of the cooling medium and the stator and improve the heat transfer effect.
Specifically, every group spoiler subassembly 128 includes spoiler 1281 in an at least, in a at least spoiler 1282 and an at least outer spoiler 1283, interior spoiler 1281 with outer spoiler 1283 staggers in proper order and connects respectively the inner wall and the outer wall of terminal surface cooling runner 120, interior spoiler 1281 with set up spoiler 1282 in one between the outer spoiler 1283, well spoiler 1282 extremely all there is the clearance between the inner wall of terminal surface cooling runner 120 and the outer wall.
As shown in fig. 3, the external stator cooling structure 100 further includes an end cover 170, where the end cover 170 is fixed to the outer end surface of the bottom plate 111 facing away from the stator slot to close the cooling channel, and since the cooling channel is externally disposed on the outer end surface of the bottom plate, the assembly of the end cover 170 and the bottom shell 110 is facilitated, and the cooling medium is prevented from leaking. As shown in fig. 1, a side of the bottom plate 111 facing away from the outer side plate 112 is provided with a plurality of outer fixing holes 1291 and a plurality of inner fixing holes 1292 through which fasteners are screwed, so as to fix the end cover on the bottom plate 111 through the fasteners.
With continued reference to fig. 3, the external stator cooling structure 100 further includes a seal 160, wherein the seal 160 is located between the end cover 170 and the bottom plate 111 to enhance the sealing between the end cover 170 and the bottom shell 110 to further prevent leakage. Wherein the seal 160 may be an annular gasket or the like.
The casing 110, the end face cooling flow channel 120 and the circumferential cooling flow channel 130 which are arranged on the casing 110 can be integrally cast and formed, so that the forming process is simple, the cost product rate is high, and the batch production cost is effectively reduced.
In summary, the circumferential cooling channel 130 is disposed on the outer end surface of the bottom plate 111 in a manner of deviating from the stator slot, so that the cooling medium in the circumferential cooling channel 130 is completely isolated from the stator installed in the stator slot, and the problem of stator insulation caused by leakage of the cooling medium is avoided. And because the circumferential cooling flow channel 130 is externally arranged on the outer end face of the bottom plate 111, the maintenance and the manufacture of the circumferential cooling flow channel are convenient, the processing difficulty and the cost are reduced, the consistency of products can be realized, and the yield is improved. In addition, the circumferential cooling channel 130 extends to the inside of the outer side plate 112, so that the area of the circumferential cooling channel on the housing 110 is increased, and the cooling effect on the stator is effectively improved. By combining the end face cooling flow passage 120 and the circumferential cooling flow passage 130, the cooling effect on the stator is effectively improved. The stator fixing table 127 is used for fixing the stator in the stator slot through a fastener, and the flow disturbing assembly 128 carries out turbulence on the cooling medium to improve the cooling performance and improve the fixing effect.
The utility model also provides an axial magnetic field motor, which comprises two external stator cooling structures 100 of the embodiment;
the axial magnetic field motor further comprises two stators and a rotor, the two external stator cooling structures 100 are abutted in a mode that the stator slots are opposite, so that the two stators and the rotor are located between the two external stator cooling structures 100, and one stator is arranged in each stator slot of each external stator cooling structure 100 and abutted on the bottom plate 111, so that the rotor is kept between the two stators in an air gap manner.
Because the axial magnetic field motor adopts the external stator cooling structure 100 of the above embodiment, the axial magnetic field motor refers to the above embodiment for the beneficial effects brought by the external stator cooling structure 100.
The outer plates 112 of the two external stator cooling structures 100 are aligned and abutted, and are connected by a fastener, so that the two external stator cooling structures 100 are fixed. Specifically, the number of the fasteners is plural, and the fasteners are arranged along the periphery of the motor, and each of the fasteners axially draws two of the external stator cooling structures 100 along the motor.
In one embodiment, the circumferential cooling channels 130 on the two external stator cooling structures 100 are in communication to achieve series connection of the two.
In another embodiment, the circumferential cooling channels 130 on the two external stator cooling structures 100 are blocked to realize parallel connection, i.e. independent flow direction of the two external stator cooling structures 100.
The above-mentioned embodiments are only for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, and the scope of the present invention is not limited by the embodiments, i.e. all equivalent changes or modifications made in the spirit of the present invention are still within the scope of the present invention.
Claims (10)
1. An external stator cooling structure (100), comprising:
a housing (110), said housing (110) comprising a base plate (111), an outer side plate (112) and an inner side plate, said inner and outer side plates (112) being connected to the inner and outer peripheral edges of said base plate (111) in a common direction such that stator slots for mounting a stator are formed between said inner and outer side plates (112);
a cooling channel comprising a circumferential cooling flow channel (130), said circumferential cooling flow channel (130) being externally located on said base plate (111) facing away from said stator slots, and said circumferential cooling flow channel (130) extending into the interior of said outer side plate (112).
2. The external stator cooling structure (100) according to claim 1, wherein the circumferential cooling flow channel (130) has a plurality of communicating circumferential flow channel grooves (131), the circumferential flow channel grooves (131) extending in an axial direction of the outer side plate (112) and being exposed on an outer end face of the bottom plate (111) facing away from the stator grooves.
3. The external stator cooling structure (100) of claim 2, wherein the outer wall of the outer plate (112) defines a first port (140) and a second port (150), the first port (140) and the second port (150) are respectively connected to a circumferential channel (131), and the circumferential channel (131) connected to the first port (140) and the second port (150) is blocked.
4. The external stator cooling structure (100) of claim 3, wherein the cooling channel further comprises an end face cooling flow channel (120), the end face cooling flow channel (120) being disposed on the base plate (111) away from the stator slot and located in an area surrounded by the circumferential cooling flow channel (130).
5. The external stator cooling structure (100) of claim 4, wherein the end face cooling flow channel (120) has an end face left end (121) and an end face right end (122), and an end face flow channel body (123) connecting the end face left end (121) and the end face right end (122), wherein the end face left end (121) and the end face right end (122) are blocked and opposite by a blocking stage (124), so that the end face flow channel body (123) is annular.
6. The external stator cooling structure (100) according to claim 5, wherein each of the end face left end (121) and the end face right end (122) corresponds to one of the circumferential flow channel grooves (131), and the two circumferential flow channel grooves (131) corresponding to the end face left end (121) and the end face right end (122) are blocked;
the shell (110) is provided with a left through hole (125) which is communicated with the corresponding left end (121) of the end surface and the circumferential flow channel groove (131), and a right through hole (126) which is communicated with the opposite right end (122) of the end surface and the circumferential flow channel groove (131), and the left through hole (125) and the right through hole (126) are adjacently arranged at two sides of the flow blocking platform (124).
7. The external stator cooling structure (100) according to claim 1, further comprising an end cover (170), wherein the end cover (170) is fixed to an outer end face of the base plate (111) facing away from the stator slot to close the cooling channel.
8. The external stator cooling structure (100) of claim 7 further comprising a seal (160), said seal (160) being located between said end cap (170) and said base plate (111).
9. An axial field machine, comprising two external stator cooling structures (100) according to any of claims 1 to 8;
the axial magnetic field motor further comprises two stators and a rotor, the two external stator cooling structures (100) are abutted in a mode that the stator slots are opposite, so that the two stators and the rotor are located between the two external stator cooling structures (100), and one stator is arranged in each stator slot of each external stator cooling structure (100) and abutted on the bottom plate (111), so that the rotor is kept between the two stators in an air gap mode.
10. The axial field electric machine according to claim 9, wherein the circumferential cooling channels (130) of the two external stator cooling structures (100) are connected or blocked, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123059830.6U CN216390635U (en) | 2021-12-07 | 2021-12-07 | External stator cooling structure and axial magnetic field motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123059830.6U CN216390635U (en) | 2021-12-07 | 2021-12-07 | External stator cooling structure and axial magnetic field motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216390635U true CN216390635U (en) | 2022-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123059830.6U Active CN216390635U (en) | 2021-12-07 | 2021-12-07 | External stator cooling structure and axial magnetic field motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216390635U (en) |
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2021
- 2021-12-07 CN CN202123059830.6U patent/CN216390635U/en active Active
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