CN214177094U - Double-cooling device and motor stator - Google Patents

Abstract

The utility model provides a two cooling device, including casing and side ring, the casing includes the bottom plate, and follows the bottom plate edge extends the curb plate that forms, be fixed with heating element on the bottom plate, and heating element with form first cooling structure between the bottom plate, side ring detachably install in on the curb plate, so that the side ring with form second cooling structure between the curb plate. Through setting up first cooling structure with second cooling structure, not only increased heat radiating area and reduced inside temperature, effectively reduced heating element consume in addition, and first cooling structure with the second cooling structure is open, through the equipment-forming promptly, effectively reduces the casting degree of difficulty, and then promotes the yield and reduce cost.

Description

Double-cooling device and motor stator

Technical Field

The utility model relates to a motor cooling field especially relates to a two cooling device and motor stator.

Background

Due to the structural characteristics of the motor, various losses are generated in the operation process of the motor, so that the motor generates heat. In order to improve the working efficiency of the motor, a cooling system must be designed for the motor, at present, the cooling system mainly utilizes a closed channel arranged inside a shell, and introduces a cooling medium into the channel to directly or indirectly contact with a heating element, the heating element is usually a stator core, and because the channel is closed, the casting difficulty is high, the rejection rate is high, and the cost is increased. In addition, the existing channel is positioned at the bottom of the shell, so that the heat dissipation area is small, the temperature inside the motor is high, the motor loss is increased, and the motor efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides an effectively promote cooling efficiency's two cooling device and motor stator.

A double cooling device comprises a shell and a side ring, wherein the shell comprises a bottom plate and a side plate formed by extending along the edge of the bottom plate, a heating element is fixed on the bottom plate, a first cooling structure is formed between the heating element and the bottom plate, and the side ring is detachably mounted on the side plate, so that a second cooling structure is formed between the side ring and the side plate.

Optionally, the first cooling structure comprises a first drainage groove formed in the bottom plate and used for introducing a cooling medium.

Optionally, a plurality of flow dividers are disposed in the first drainage channel.

Optionally, the shunt member is provided with a mounting hole for allowing the first fastening member to pass through and lock the heating element.

Optionally, the inner side wall and/or the outer side wall of the first drainage groove are/is provided with a flow blocking piece.

Optionally, the splitter and the blocker are spaced apart.

Optionally, the second cooling structure comprises a second drainage groove which is formed in the side plate and is used for introducing a cooling medium.

Optionally, the number of the second drainage grooves is multiple, the second drainage grooves are arranged along the periphery of the side plate at equal intervals, and two adjacent second drainage grooves are communicated.

Optionally, the first and second drainage channels are in communication.

A motor stator comprises the cooling system of the embodiment, and the heating element is an iron core.

Compared with the prior art, the technical scheme has the following advantages:

through setting up first cooling structure with second cooling structure, not only increased heat radiating area and reduced inside temperature, effectively reduced the heating element consume in addition, the iron core is sealed first drainage groove, and then make the iron core with form first cooling structure between the bottom plate, the sealed second drainage groove of side ring, and then make form second cooling structure between side ring and the curb plate, promptly first cooling structure with second cooling structure is open, effectively reduces the casting degree of difficulty, and then promotes yield and reduce cost.

The present invention will be further described with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a dual cooling device according to the present invention;

fig. 2 is a schematic structural diagram of another embodiment of the dual cooling device according to the present invention;

fig. 3 is a schematic structural diagram of the housing of the present invention;

fig. 4 is a schematic structural view of the side ring of the present invention;

fig. 5 to 8 are schematic assembly views of the motor stator of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. 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 invention, 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 invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purpose of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

As shown in fig. 1 to 4, the dual cooling device includes a housing 100 and a side ring 300, the housing 100 includes a bottom plate 1001, and side plates 1002a and 1002b extending along an edge of the bottom plate 1001, the bottom plate 1001 is fixed with a heat generating element 200, and a first cooling structure 110 is formed between the heat generating element 200 and the bottom plate 1001, and the side ring 300 is detachably mounted on a side of the side plates 1002a and 1002b facing away from the bottom plate 1001, so that a second cooling structure 120 is formed between the side ring 300 and the side plates 1002a and 1002 b.

Through setting up first cooling structure 110 with second cooling structure 120, not only increased heat radiating area and reduced inside temperature, still effectively reduced heating element 200 consume to first cooling structure 110 with second cooling structure 120 is open, through the assembly forming promptly, effectively reduces the casting degree of difficulty, and then promotes the yield and reduce cost.

As shown in fig. 3, the bottom plate 1001 is ring-shaped, and has an inner edge extending to form a side plate 1002b and an outer edge extending to form a side plate 1002a, and the two side plates are located on the same side of the bottom plate 1001, and may have the same extending length, and both side plates may be ring-shaped. The second cooling structure 120 may be located on the side plate 1002a and/or the side plate 1002b, and the second cooling structure 120 is described in detail below by taking the side plate 1002a as an example:

the second cooling structure 120 comprises a plurality of second drainage grooves 121 which are formed in the side plate 1002a and used for introducing cooling media, and the second drainage grooves 121 are arranged at equal intervals along the outer peripheral edge of the side plate 1002 a.

Specifically, the second drainage groove 121 is opened at the side of the side plate 1002a deviating from the bottom plate 1001, when the side ring 300 is fixed at the side of the side plate 1002a deviating from the bottom plate 1001, the side ring 300 and the side plate 1002b form the second cooling structure 120 therebetween, and it can be seen that the second cooling structure 120 is open, so that the assembly and the molding are convenient, and compared with a closed type, the machining and casting difficulty is reduced, the yield is effectively improved, and the phenomenon of cost increase is avoided.

The depth of the second drainage groove 121 is deep, so that the heat dissipation area is increased, and the purpose of improving the cooling effect is achieved. The depth of the second drainage groove 121 refers to the length of the second drainage groove 121 in the axial direction of the housing 100.

More specifically, two adjacent second flow-guiding grooves 121 communicate with each other through a first communicating portion, and the cooling medium can flow between the two adjacent second flow-guiding grooves 121 through the first communicating portion. Wherein the length of the first communicating portion in the axial direction of the casing 100 may be smaller than the length of the second drainage groove 121 in the axial direction of the casing 100, and the first communicating portion may be located at a lower portion of the second drainage groove 121.

As shown in fig. 3, the side plate 1002a is provided with a water inlet 1211 and a water outlet 1212, wherein the water inlet 1211 and the water outlet 1212 correspond to one of the second drainage grooves 121, and two corresponding second drainage grooves 121 are adjacent to each other, and the two corresponding second drainage grooves 121 are not communicated with each other, that is, no first communication portion is provided, so that the cooling medium flows irreversibly.

The side ring 300 may be fixed to the side plate 1002a by a second fastening member 500, the second fastening member 500 may be a bolt, referring to fig. 5 and 7, the side ring 300 is opened with a bolt hole 310, and the second fastening member 500 is threaded to the side plate 1002a through the bolt hole 310. In addition, the side ring 300 and the side plate 1002a may be fixed by a sealant.

As shown in fig. 1 to 3, the first cooling structure 110 includes a first drainage groove 111 provided on the bottom plate 1001 and used for introducing a cooling medium, and when the heating element 200 is fixed on the bottom plate 1001, the heating element 200 closes the first drainage groove 111, so that the first cooling structure 110 is formed between the bottom plate 1001 and the heating element 200, as seen in that the first cooling structure 110 is open, the assembly and molding are convenient, and compared with a closed type, the difficulty in processing and casting is reduced, the yield is effectively improved, and the phenomenon of increasing the cost is avoided.

The cooling medium may be gas or liquid, wherein the liquid may be water or oil, and may be selected according to properties such as a material of the heat generating element 200. For example, when the heating element is a 200-bit iron core, the cooling medium may be water or oil.

As shown in fig. 4, the first drainage groove 111 is annular, and a blocking member 114 is disposed inside the first drainage groove 111, and the inlet and outlet of the first drainage groove 111 may be located at two sides of the blocking member 114 and adjacent to the blocking member 114, so that the cooling medium flows along the direction of the first drainage groove 111, the cooling medium is effectively prevented from flowing back, and the cooling effect is improved. In addition, the first conduction groove 111 can have other shapes, including regular or irregular shapes, such as a square or S-shape.

A plurality of shunting pieces 112 are arranged in the first drainage groove 111, and the shunting pieces 112 can be arranged along the length direction of the first drainage groove 111 to shunt the cooling medium, so that the cooling effect of the heating element is effectively improved.

Specifically, the flow dividing member 112 may be a cylinder and located between the inner and outer sidewalls of the first drainage groove 111, and when the cooling medium flows to the flow dividing member 112, the flow dividing member 112 affects the flow dividing to generate the flow dividing, thereby achieving the purpose of improving the cooling effect.

The shunt member 112 may be formed with a mounting hole 1121 for locking the heating element 200 by a first fastener 400, referring to fig. 1. The first fastening member 400 may be a bolt, i.e., a bolt is threaded through the mounting hole 1121 to be connected with the heating element 200, so that the heating element 200 is stably mounted on the base plate 1001. In addition, the heating element may be fixed to the bottom plate 1001 by a sealant.

As shown in fig. 4, a plurality of chokes 113 are disposed on the inner sidewall of the first flow-guiding groove 111, and a gap is formed between the chokes 113 and the outer sidewall of the first flow-guiding groove 111 to allow the cooling medium to pass therethrough. By providing the chokes 113 such that the cooling medium generates a vortex flow at the free ends of the chokes 113, the cooling efficiency is further improved. Wherein the free end of the spoiler 113 refers to an end of the spoiler 113 toward the outer sidewall of the first conduction groove 111. It should be noted that the spoiler 113 may also be disposed on the outer side wall of the first conduction groove 111, and even may be disposed on the inner and outer side walls of the first conduction groove 111 in a staggered manner.

With continued reference to fig. 4, the splitter 112 and the blocker 113 may be spaced apart.

The first cooling structure 110 and the second cooling structure 120 may be connected or independent from each other, and when they are connected, the cooling medium may circulate between them, and the connection includes two ways, i.e., in series or in parallel. When the two are independent from each other, the cooling medium inside the two cannot flow.

As shown in fig. 2, the first drainage groove 111 and the second drainage groove 121 communicate with each other through a second communication portion 130, so that a cooling medium flows between the first cooling structure 110 and the second cooling structure 120.

As shown in fig. 3, the number of the second communicating portions 130 is two, and the second communicating portions are located at both sides of the blocking member 114 and adjacent to the blocking member 114.

As shown in fig. 3, the cooling medium is introduced from the water inlet 1211, sequentially passes through the plurality of second drainage grooves 121 in a clockwise direction, flows into the first drainage groove 111 through the second communicating portion 130 located on the left side of the blocking member 114, passes through the first drainage groove 111 in a counterclockwise direction, passes through the second communicating portion 130 located on the right side of the blocking member 114, flows into the second drainage groove 121 corresponding to the water outlet 1212, and is discharged from the water outlet 1212.

In summary, by providing the first cooling structure 110 and the second cooling structure 120, not only the heat dissipation area is increased to reduce the internal temperature, but also the consumption of the heat generating element 200 is effectively reduced, and the first cooling structure 110 and the second cooling structure 120 are both open, i.e., are assembled and formed, thereby effectively reducing the casting difficulty, and further improving the yield and reducing the cost.

As shown in fig. 5 to 8, the present invention further provides a motor stator, which includes the cooling system of the above embodiment, and the motor stator employs the cooling system of the above embodiment, and the beneficial effects brought by the cooling system refer to the above embodiment.

As shown in fig. 5, the heating element 200 is an iron core, and includes a base plate 210 and a plurality of teeth 220, the base plate 210 is annular and is used to be fixed on the base plate 1001, and referring to fig. 1, the plurality of teeth 220 are equidistantly spaced along the periphery of the base plate 210.

As shown in fig. 4, the side ring 300 has a ring shape, and is mounted on the side plate 1002 b.

The motor stator assembling method comprises the following steps:

the first step is as follows: the core may be adhered to the base plate 1001 by a sealant and fastened by the first fastening member 400 so that the core seals the first drainage groove 111, thereby forming the first cooling structure 110 between the core and the base plate 1001, referring to fig. 5 and 6.

The second step is that: the side ring 300 is bonded to the side plate by a sealant and is fastened by a second fastening member 500 so that the side ring 300 seals the second drainage groove 121, thereby forming a second cooling structure 120 between the side ring 300 and the side plate, referring to fig. 7 and 8.

The housing 100 may be made of a metal material having a high heat conductivity, and may be formed by a sand core low-pressure casting process. Since the side ring 300 is located outside the core, eddy current loss is not generated, wherein the side ring 300 may be made of a metal material having a high heat conductivity by a casting process.

In summary, by providing the first cooling structure 110 and the second cooling structure 120, not only the heat dissipation area is increased to reduce the internal temperature, but also the loss of the heating element 200 is effectively reduced, in addition, the iron core seals the first drainage groove 111, so that the first cooling structure 110 is formed between the iron core and the bottom plate 1001, the side ring 300 seals the second drainage groove 121, and the second cooling structure 120 is formed between the side ring 300 and the side plate, that is, the first cooling structure 110 and the second cooling structure 120 are both open, so as to effectively reduce the casting difficulty, and further improve the yield and reduce the cost.

Besides, the skilled in the art can also change the shape, structure and material of the housing 100, the side ring 300 according to the actual situation, as long as the utility model discloses on the basis of the above-mentioned disclosure, adopted with the same or similar technical scheme of the utility model, solved with the same or similar technical problem of the utility model, and reached with the same or similar technical effect of the utility model, all belong to within the protection scope, the specific embodiment of the utility model is not so limited.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims (10)

1. The double cooling device is characterized by comprising a shell and a side ring, wherein the shell comprises a bottom plate and a side plate formed by extending along the edge of the bottom plate, a heating element is fixed on the bottom plate, a first cooling structure is formed between the heating element and the bottom plate, and the side ring is detachably mounted on the side plate, so that a second cooling structure is formed between the side ring and the side plate.

2. A dual cooling device as claimed in claim 1, wherein the first cooling structure includes a first drainage groove formed in the base plate for introducing a cooling medium.

3. A dual cooling device as recited in claim 2, wherein a plurality of flow diverters are disposed within the first flow diverter slot.

4. A twin cooling device as defined in claim 3 in which the manifold has mounting holes for the passage of a first fastener to lock the heating element.

5. A dual cooling device as claimed in claim 3, wherein the inner and/or outer side walls of the first conduction grooves are provided with flow blocking members.

6. A twin cooling device as defined in claim 5 in which the splitter and the blocker are spaced apart.

7. A dual cooling device as claimed in claim 2, wherein the second cooling structure includes a second drainage groove provided in the side plate for passing a cooling medium therethrough.

8. A dual cooling device as claimed in claim 7, wherein said second flow-directing slots are plural in number and are spaced equidistantly along the periphery of said side plate, adjacent two of said second flow-directing slots communicating with each other.

9. The dual cooling device of claim 7, wherein the first conduction drain and the second conduction drain communicate.

10. A stator of an electric machine comprising the double cooling device as claimed in any one of claims 1 to 9, the heat generating element being an iron core.

Images