CN112467942B - Cooling Axial Motor - Google Patents

Abstract

The invention provides a heat dissipation type axial motor, which comprises: a housing; the stator assembly is fixed inside the shell; the rotor assembly is rotatably arranged in the shell and is relatively fixed with the stator assembly; the winding coil is arranged in the shell, one end of the stator assembly is fixed relatively, the other end of the stator assembly is fixed relatively, the winding heat dissipation piece is in direct contact with the winding coil, and the iron core heat dissipation piece is in direct contact with the iron core, so that the heat dissipation performance of the winding coil and the iron core is effectively improved. And the winding heat dissipation part and the iron core heat dissipation part are simple in structure and convenient to machine and form, and the cooling fan is used for acting on the winding heat dissipation part and the iron core heat dissipation part, so that the heat dissipation performance is further improved.

Description

Cooling Axial Motors

technical field

The invention relates to the field of motors, in particular to a heat-dissipating axial motor.

Background technique

Motor refers to an electromagnetic device that realizes the conversion or transmission of electrical energy according to the law of electromagnetic induction. Its main function is to generate driving torque as a power source for electrical appliances or various machinery. At present, when the motor is used as a power source, losses are generated and released in the form of heat. The main losses include copper loss and iron loss, of which copper loss is also called ohmic loss, which specifically refers to the loss of copper windings in the motor due to ohmic resistance. The loss is divided into hysteresis loss and eddy current loss. It can be seen that the main loss-generating components of the motor are the coil winding and the stator core. In addition, if the heat generated by the motor cannot be dissipated in time and accumulates, it will insulate the motor. Life, magnetic material performance will cause adverse effects, and even damage the motor.

However, the existing motors all adopt an external heat dissipation method, that is, the heat dissipation medium cannot directly contact the heat-generating components, resulting in low heat dissipation efficiency.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention provides a heat dissipation axial motor that effectively improves heat dissipation performance.

A heat-dissipating axial motor, comprising:

shell;

a stator assembly, fixed inside the casing;

a rotor assembly, which is rotatably arranged inside the casing and is relatively fixed with the stator assembly;

A heat dissipation assembly, one end of the heat dissipation assembly is located inside the casing and is relatively fixed with the stator assembly, and the other end of the heat dissipation assembly is located outside the casing.

Optionally, the stator assembly includes an iron core and a tooth portion, a plurality of the tooth portions are fixed on one side of the iron core, the plurality of the tooth portions are arranged in a ring, and each tooth portion is Winding coils are wound around.

Optionally, the heat dissipation assembly includes a winding heat dissipation member, two ends of the winding heat dissipation member are a winding heat absorption part and a winding heat dissipation part respectively, and the winding heat absorption part is located between two adjacent winding coils , the winding heat dissipation part is located outside the casing.

Optionally, the heat dissipation assembly includes an iron core heat dissipation member, two ends of the iron core heat dissipation member are an iron core heat absorption part and an iron core heat dissipation part respectively, and the iron core heat absorption part is relatively fixed to the iron core , the iron core heat dissipation part is located outside the casing.

Optionally, the housing includes a first end cover, a second end cover and a cover, the first end cover and the second end cover are respectively fixed on two sides of the cover, and the cover is Pass through the winding heat dissipation part and the iron core heat dissipation part.

Optionally, it also includes a cooling fan, the cooling fan is installed on the side of the first end cover away from the casing, the first end cover is provided with a plurality of first heat dissipation holes, the first The heat dissipation holes are respectively opposite to the winding heat dissipation part and the iron core heat dissipation part, so that the cooling fan can dissipate heat from the winding heat dissipation part and the iron core heat dissipation part.

Optionally, the second end cover is provided with a plurality of second heat dissipation holes, and the second heat dissipation holes are respectively opposite to the winding heat dissipation portion and the iron core heat dissipation portion.

Optionally, a number of heat dissipation fins are provided on the outside of the casing.

Optionally, a thermally conductive medium is filled between the winding heat sink and the winding coil.

Optionally, the number of the stator assemblies and the casings is two, and each of the stator assemblies corresponds to one of the casings.

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

The winding heat sink is in direct contact with the winding coil, and the iron core heat sink is in direct contact with the iron core, which effectively improves the heat dissipation performance of the winding coil and the iron core. In addition, the winding radiator and the iron core radiator have simple structures, are convenient to process and form, and use a cooling fan to act on the winding radiator and the iron core radiator to further improve the heat dissipation performance.

The present invention is further described below in conjunction with the accompanying drawings and embodiments.

Description of drawings

FIG. 1 is an exploded view of a conventional heat-dissipating axial motor;

FIG. 2 is a schematic structural diagram of the heat-dissipating axial motor according to the present invention;

3 is a cross-sectional view of the heat-dissipating axial motor according to the present invention;

4 is a schematic structural diagram of the stator assembly according to the present invention;

Figure 5 is a rear view of the stator assembly of the present invention.

Detailed ways

The following description serves to disclose the invention to enable those skilled in the art to practice the invention. The preferred embodiments described below are given by way of example only, and other obvious modifications will occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It should be understood by those skilled in the art that in the disclosure of the present invention, the terms "portrait", "horizontal", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by vertical, horizontal, top, bottom, inner, outer, etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and to simplify the description, rather than to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus the above terms should not be construed as limiting the invention.

It should be understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be one. The number may be plural, and the term "one" should not be understood as a limitation on the number.

As shown in Figures 1 to 5, the heat dissipation axial motor includes:

a shell 100;

At least the stator assembly 200 is fixed inside the casing 100;

a rotor assembly 300, rotatably disposed inside the casing 100, and relatively fixed to the stator assembly 200;

At least one heat dissipation component 400 is provided. One end of the heat dissipation component 400 is located inside the casing 100 and is relatively fixed to the stator component 200 , and the other end of the heat dissipation component 400 is located outside the casing 100 .

One end of the heat dissipation assembly 400 is located inside the casing 100 and is in direct contact with the stator assembly 200 , thereby improving the heat absorption efficiency, and then dissipating heat through the other end located outside the casing 100 , effectively improving the heat dissipation of the motor. heat radiation.

As shown in FIG. 1 , FIG. 4 and FIG. 5 , the stator assembly 200 includes an iron core 210 and a plurality of tooth portions 220 , and the plurality of tooth portions 220 are fixed on the same side of the iron core 210 and are arranged in a ring shape, A winding coil 230 is wound around each of the teeth 220 . The heat dissipation assembly 400 may be fixed corresponding to the winding coil 230 and/or the iron core 210 to dissipate heat to the main heating components in the motor: the winding coil 230 and the iron core 210 . The following is a specific introduction through three embodiments:

first embodiment

As shown in FIG. 1 to FIG. 5 , the heat dissipation assembly 400 includes at least one winding heat dissipation member 410 , two ends of the winding heat dissipation member 410 are respectively a winding heat absorption part and a winding heat dissipation part, and the winding heat absorption part is located in the phase of the winding heat dissipation part. Between two adjacent winding coils 230 , the winding heat dissipation portion is located outside the casing 100 . The winding coil 230 absorbs heat through the winding heat absorption part, and dissipates heat through the winding heat dissipation part.

Specifically, the winding heat sink 410 can be a tube body structure, and the inside of it contains a flowing medium, and the fluid medium can convect back and forth between the winding heat absorption part and the winding heat dissipation part, so that the surface of the tube body has a rapid temperature uniformity to achieve the purpose of heat transfer. The fluid medium may be liquid or gas.

More specifically, the cross section of the winding heat sink 410 may be rectangular, that is, the winding heat sink 410 may be in the shape of a sheet, and may be inserted between two adjacent winding coils 230 . In addition, a heat-conducting medium can also be filled in the assembly gap between the winding heat sink 410 and the winding coil 230 , which not only stabilizes the winding heat sink 410 , but also further improves the heat dissipation effect. The thermally conductive medium includes thermally conductive silica gel, thermally conductive adhesive, and the like.

As shown in FIG. 4 , the number of the winding heat sinks 410 and the number of the winding coils 230 are the same, and they are arranged at intervals in sequence. Of course, the number of the winding heat sinks 410 may be less than the number of the winding coils 230 , for example, the winding heat sink 410 is inserted between two adjacent winding coils 230 .

As shown in FIG. 1 and FIG. 2 , the housing 100 includes a first end cover 110 , a second end cover 120 and at least one casing 130 , the first end cover 110 and the second end cover 120 are respectively It is fixed on both sides of the casing 130 .

Specifically, the casing 130 is annular, and the first end cap 110 and the second end cap 120 are both circular, so that the assembled casing 100 is cylindrical. The stator assembly 200 is also cylindrical, and when the stator assembly 200 is installed in the housing 100 , the two are coaxially arranged.

The winding heat sink 410 can pass through the casing 130 so that the winding heat sink is located outside the casing 100 . In one embodiment, the casing 130 is provided with a first insertion hole for the winding heat sink 410 to pass through. When the winding heat sink 410 is assembled, the stator assembly 200 can be installed on the casing first. 100, and then the winding heat absorbing portion of the winding heat sink 410 is inserted into the housing 130 through the first insertion hole, and inserted between the two adjacent winding coils 230, so as to The winding heat dissipation part is located outside the casing 100 . The first end cover 110 , the second end cover 120 and the casing 130 may be fixed by means of bolts, socket connections or snap connections.

In another embodiment, one end of the casing 130 is provided with a first sliding hole. When the winding heat sink 410 is assembled, the winding heat sink 410 is first inserted into two adjacent winding coils. 230, so that the winding heat absorbing part and the winding coil 230 are relatively fixed, and then the winding heat sink 410 is along the first sliding hole, so that the stator assembly 200 is located in the casing 130 Inside, the first end cap 110 and the second end cap 120 are finally fixed on both sides of the casing 130 .

As shown in FIG. 1 and FIG. 3 , the heat-dissipating axial motor further includes a cooling fan 500 , and the cooling fan 500 is installed on the side of the first end cover 110 away from the housing 130 to cool the The winding heat dissipation portion of the winding heat dissipation member 410 conducts heat dissipation to further improve the heat dissipation effect.

The rotor assembly 300 includes a rotor plate 310 and a rotor shaft 320, the rotor plate 310 is circular, the rotor shaft 320 is located on the axis of the rotor plate 310, and the stator assembly 200 is sleeved on the rotor plate 310. on the rotor shaft 320 , and the teeth 220 are located between the rotor plate 310 and the iron core 210 , so that the rotor assembly 300 rotates relative to the stator assembly 200 . Continuing to refer to FIG. 3 , the rotor shaft 320 can pass through the first end cover 110 to be drive-connected to the cooling fan 500 , that is, the rotor shaft 320 drives the cooling fan 500 to rotate, so as to make the cooling fan 500 rotate The winding heat dissipation part is dissipated.

Specifically, the first end cover 110 is provided with a plurality of first heat dissipation holes 111, and the first heat dissipation holes 111 are opposite to the winding heat dissipation part. When the cooling fan 500 rotates, the first heat dissipation holes 111 pass through the first heat dissipation holes The heat dissipation holes 111 dissipate heat from the winding heat dissipation portion.

Referring to FIG. 1 , the first heat dissipation holes 111 are arranged at intervals along the outer periphery of the first end cover 110 to correspond to the plurality of coil heat dissipation parts of the plurality of coil heat dissipation members 410 arranged in a ring shape, so that each The above-mentioned winding heat dissipation parts can be cooled by the cooling fan 500 .

As shown in FIG. 1 and FIG. 3 , the second end cover 120 is provided with a plurality of second heat dissipation holes 121 , the second heat dissipation holes 121 are opposite to the winding heat dissipation part, and the airflow generated by the rotation of the cooling fan 500 , it first passes through the first heat dissipation hole 111, then passes through the winding heat dissipation part, and takes away the heat of the winding heat dissipation part, and finally is discharged from the second heat dissipation hole 121 to improve the fluidity of the air flow, which can effectively improve the cooling efficiency.

Referring to FIG. 1 , the second heat dissipation holes 121 are arranged at intervals along the outer periphery of the second end cover 120 to correspond to the plurality of coil heat dissipation portions of the plurality of coil heat dissipation members 410 arranged in a ring shape.

As shown in FIG. 1 and FIG. 2 , a plurality of heat dissipation fins 131 are disposed on the outside of the casing 130 , and the heat dissipation fins 131 are located between the first heat dissipation hole 111 and the second heat dissipation hole 121 . The heat dissipation fins 131 can absorb the heat inside the casing 100 and use the cooling fan 500 to dissipate heat.

In one embodiment, the heat dissipation fins 131 and the winding heat dissipation portion are both located outside the casing 130 and arranged at intervals.

In another embodiment, the winding heat dissipation part is connected to the heat dissipation fins 131 , and the gap between the two is filled with a thermally conductive medium, that is, the winding heat dissipation part is located outside the casing 100 through the heat dissipation fins 131 . For example, the winding heat dissipation portion is inserted into the heat dissipation fins 131 to dissipate heat through the heat dissipation fins 131 .

As shown in FIG. 1 and FIG. 3 , the heat-dissipating axial motor further includes a protective cover 140 , and the protective cover 140 is fixed on the side of the first end cover 110 away from the cover 130 , so that all The cooling fan 500 is located in the accommodating cavity formed by the protective cover 140 and the first end cover 110 .

The protective cover 140 is provided with a plurality of air inlet holes 141 . The air inlet holes 141 can be arranged in a ring shape. When the cooling fan 500 rotates, the external air enters the protective cover 140 through the air inlet holes 141 . The accommodating cavity formed by the first end cover 110 passes through the first heat dissipation hole 111 , then passes through the winding heat dissipation part and absorbs the heat, and finally discharges from the second heat dissipation hole 121 .

As shown in FIG. 3 , the first end cover 110 and the second end cover 120 are both sleeved on the rotor shaft 320 , so that the rotor assembly 300 rotates relative to the stator assembly 200 and the housing 100 .

As shown in FIG. 1 to FIG. 4 , the number of the stator assemblies 200 is two. In this case, the motor is a double-stator motor. The two stator assemblies 200 are located on both sides of the rotor plate 310 respectively, and the stator The teeth 220 on the assembly 200 are all opposite to the rotor plate 310 .

The number of the casings 130 may also be two, and each of the stator assemblies 200 corresponds to one of the casings 130 .

In another embodiment, the number of the stator assembly 200 is one, and in this case, the motor is a single-stator motor.

In summary, the winding heat sink 410 is in the shape of a sheet, and is arranged along the radial direction of the motor and inserted between two adjacent winding coils 230 , and dissipates heat through the winding located outside the casing 100 . heat dissipation, wherein the winding heat sink 410 is in direct contact with the winding coil 230, thereby effectively improving the heat dissipation effect, and the winding heat sink 410 has a simple structure, so that the heat conduction path is short, and no bending process is required, reducing the This reduces the complexity of the manufacturing process and avoids reducing thermal conductivity. In addition, the cooling fan 500 is used to act on the heat dissipation part of the winding to further improve the heat dissipation performance.

Second Embodiment

The difference from the first embodiment is that the heat dissipation assembly 400 includes at least one iron core heat dissipation member 420 .

As shown in FIG. 1 to FIG. 5 , two ends of the iron core heat sink 420 are an iron core heat absorption part and an iron core heat dissipation part, respectively. The iron core heat absorption part is relatively fixed to the iron core 210 , and the The iron core heat dissipation part is located outside the casing 100 . The iron core heat absorption part absorbs the heat generated by the iron core 210 and dissipates heat through the iron core heat dissipation part.

As shown in FIGS. 4 and 5 , the iron core heat sink 420 is located on the side of the iron core 210 away from the teeth 220 , and the iron core heat sink 420 can pass through the casing 130 so that the The iron core heat dissipation part is located outside the casing 100 .

In one embodiment, the casing 130 is provided with a second insertion hole for the iron core heat sink 420 to pass through. When the iron core heat sink 420 is assembled, the stator assembly 200 can be installed in the inside the shell 100, and then insert the heat-absorbing part of the iron core through the second insertion hole, so that the heat-absorbing part of the iron core is fixed in contact with the iron core 210, and the heat-dissipating part of the iron core is located in the Outside the housing 100 .

In another embodiment, one end of the casing 130 is provided with a second sliding hole. When the iron core heat sink 420 is assembled, the iron core heat sink 420 is first fixed on the iron core 210 to The iron core heat absorbing part and the iron core 210 are relatively fixed, such as by bonding, binding, etc., and then the iron core heat sink 420 is along the second sliding hole, so that the stator assembly 200 Inside the casing 130 , the first end cap 110 and the second end cap 120 are finally fixed on both sides of the casing 130 .

It should be noted that, referring to FIG. 1 , the iron core heat sink 420 is close to the first end cover 110 or the second end cover 120 , therefore, the second insertion hole and the second sliding hole may be disposed at the first end cover 110 or the second end cover 120 . on one end cover 110 or the second end cover 120 .

As shown in FIG. 5 , the number of the iron core heat sinks 420 is multiple and arranged in a ring shape.

Similar to the first embodiment, the iron core heat dissipation portion is located between the first heat dissipation hole 111 and the second heat dissipation hole 121 , and the cooling fan 500 is used to enhance heat dissipation.

The iron core heat sink 420 may be a tube structure, and the inside of the iron core heat sink 420 contains a flowing medium, and the purpose of heat transfer is achieved by the flowing medium. The iron core heat sink 420 may have a circular cross section and be disposed along the radial direction of the motor, and its length may be short to reduce the difficulty of the manufacturing process.

To sum up, the iron core heat absorbing part of the iron core heat sink 420 directly contacts the iron core 210 , absorbs the heat generated by the iron core 210 , and dissipates heat through the iron core heat dissipation part outside the casing 100 . The iron core heat sink 420 has a simple structure, so that the heat conduction path is short, and no bending process is required, which reduces the complexity of the manufacturing process and avoids reducing the heat conduction performance. In addition, the cooling fan 500 is used to act on the heat dissipation part of the iron core to further improve the heat dissipation performance.

Third Embodiment

As shown in FIGS. 1 to 5 , the heat dissipation assembly 400 includes at least one winding heat dissipation member 410 and at least one iron core heat dissipation member 420 , wherein the winding heat dissipation member 410 dissipates heat from the winding coil 230 , and the iron core The heat sink 420 dissipates heat from the iron core 210 .

To sum up, the winding heat sink 410 is in direct contact with the winding coil 230 , and the iron core heat sink 420 is in direct contact with the iron core 210 , which effectively improves the effect on the winding coil 230 and the iron core 210 . heat dissipation performance. In addition, the winding heat sink 410 and the iron core heat sink 420 are simple in structure and convenient to be processed and formed, and the cooling fan 500 is used to act on the winding heat sink and the iron core heat sink to further improve the heat dissipation performance.

In addition, those skilled in the art can also change the shape, structure and material of the winding heat sink 410 and the iron core heat sink 420 according to the actual situation. The same or similar technical solutions of the present invention solve the same or similar technical problems as the present invention, and achieve the same or similar technical effects as the present invention, all fall within the protection scope of the present invention. Not limited to this.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed 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, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

It should be understood by those skilled in the art that the embodiments of the present invention shown in the above description and the accompanying drawings are only examples and do not limit the present invention. The objects of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been shown and described in the embodiments, and the embodiments of the present invention may be modified or modified in any way without departing from the principles.

Claims (5)

1. A heat-dissipating axial motor is characterized in that, comprising: shell; a stator assembly, fixed inside the casing; a rotor assembly, which is rotatably arranged inside the casing and is relatively fixed with the stator assembly; a heat dissipation assembly, one end of the heat dissipation assembly is located inside the casing and is relatively fixed with the stator assembly, and the other end of the heat dissipation assembly is located outside the casing; The stator assembly includes an iron core and a tooth portion, a plurality of the tooth portions are fixed on one side in the axial direction of the iron core, the plurality of the tooth portions are arranged in an annular shape, and each tooth portion is wound with a winding coil; The heat dissipation assembly includes a winding heat sink, the winding heat sink is in the shape of a sheet and arranged along the radial direction of the motor, the two ends of the winding heat sink are respectively a winding heat absorption part and a winding heat dissipation part, and the winding heat absorption part is located at the Between two adjacent winding coils, the winding heat dissipation part is located outside the casing, the heat dissipation assembly includes an iron core heat dissipation part, and the two ends of the iron core heat dissipation part are the iron core heat absorption part and the iron core heat dissipation part respectively. an iron core heat dissipation part, the iron core heat absorption part is relatively fixed to the iron core, and the iron core heat dissipation part is located outside the shell; The casing includes a first end cover, a second end cover and a casing, the first end cover and the second end cover are respectively fixed on two sides of the casing, and the casing is used for the winding The heat dissipation part and the iron core heat dissipation part pass through; It also includes a cooling fan, the cooling fan is installed on the side of the first end cover away from the casing, and a plurality of first heat dissipation holes are opened on the first end cover, and the first heat dissipation holes are respectively connected with The winding heat dissipation part and the iron core heat dissipation part are opposite to each other, so that the cooling fan can dissipate heat from the winding heat dissipation part and the iron core heat dissipation part. 2 . The heat-dissipating axial motor according to claim 1 , wherein a plurality of second heat-dissipating holes are opened on the second end cover, and the second heat-dissipating holes are respectively connected to the winding heat-dissipating portion and the The iron core heat sink is opposite. 3 . The heat-dissipating axial motor according to claim 1 , wherein a plurality of heat-dissipating fins are provided on the outside of the casing. 4 . 4. The heat-dissipating axial motor according to claim 1, wherein a heat-conducting medium is filled between the winding heat sink and the winding coil. 5 . The heat-dissipating axial motor according to claim 1 , wherein the number of the stator assemblies and the casings is two, and each of the stator assemblies corresponds to one of the casings. 6 .

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