CN214314874U - Liquid cooling motor - Google Patents

Liquid cooling motor Download PDF

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Publication number
CN214314874U
CN214314874U CN202120372997.9U CN202120372997U CN214314874U CN 214314874 U CN214314874 U CN 214314874U CN 202120372997 U CN202120372997 U CN 202120372997U CN 214314874 U CN214314874 U CN 214314874U
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China
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liquid
shell
heat
heat transfer
wall
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CN202120372997.9U
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Inventor
邓仁杰
毕刘新
魏庆
王少景
李军
施黄璋
衣富成
胡永路
徐刚
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Tianjin Emaging High Speed Motor Technology Co ltd
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Tianjin Emaging High Speed Motor Technology Co ltd
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Abstract

The utility model provides a liquid cooling motor, include: the liquid cooling device comprises a shell, wherein liquid cooling channels are arranged in the wall of the shell, and ventilation channels are arranged on the shell in pairs; the circulating air path shell is fixedly connected with the outer wall of the machine shell and matched with the machine shell to form an outer air channel; a fan; and the heat dissipation piece is connected with the outer wall of the machine shell. The fan drives gas to circularly flow between the inside of the shell and the outer air channel, the gas carries away heat on each structure inside the shell when flowing inside the shell, the gas transfers the heat to the heat dissipation part when flowing inside the outer air channel, and the heat is finally absorbed by cooling liquid in the liquid cooling channel. In the process, the heat on the radiating piece is transferred to the cooling liquid through the inner wall of the liquid cooling flow channel back to the inner side of the shell, so that the inner wall of the liquid cooling flow channel back to the inner side of the shell is effectively utilized, and the cooling effect of the cooling liquid is fully exerted.

Description

Liquid cooling motor
Technical Field
The utility model relates to the field of electric machines, especially, relate to a liquid cooling motor.
Background
The liquid cooling motor is generally provided with a channel in the shell, and the heat on the shell is taken away by utilizing the convection heat exchange of the channel of the cooling liquid in the shell, so that the stator and the stator winding which are arranged in the shell are cooled.
The cooling effect and the heat transfer area of coolant liquid are directly relevant, but in current liquid cooling motor, the coolant liquid mainly through the inner wall and the stator heat transfer of the inside one side of passageway towards the casing, the inner wall of the inside one side of passageway dorsad casing can not obtain effectual utilization, the unable cooling effect of full play coolant liquid, have the waste of certain degree.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the inner wall of the cooling liquid channel back to one side of the inside of the shell cannot be effectively utilized, the cooling effect of the cooling liquid cannot be fully exerted, and the waste of a certain degree exists, the utility model aims to provide a liquid cooling motor.
The utility model provides a following technical scheme:
a liquid-cooled electric machine comprising:
the liquid cooling device comprises a shell, wherein liquid cooling channels are arranged in the wall of the shell, air channels are arranged on the shell in pairs, and the two air channels are respectively positioned on two sides of the liquid cooling channels along the axis direction of the shell;
the circulating air path shell is fixedly connected with the outer wall of the machine shell and matched with the machine shell to form an outer air channel, and the outer air channel is communicated with the interior of the machine shell through the ventilation channel;
the fan is used for driving gas to circularly flow between the interior of the shell and the outer air duct; and
and the heat dissipation part is connected with the outer wall of the shell and is used for transferring the heat of the gas in the outer air channel to the shell.
As right the further optional scheme of liquid cooling motor, be equipped with at least one heat conduction plane on the outer wall of casing, the radiating piece with the heat conduction plane corresponds the setting, the radiating piece includes first heat transfer board, first heat transfer board with the laminating of heat conduction plane, be equipped with a plurality of second heat transfer boards on the first heat transfer board, it is a plurality of the second heat transfer board all with the footpath line of casing is parallel, and with the heat conduction plane is perpendicular, each the second heat transfer board is arranged along the normal direction of self.
As a further optional solution to the liquid-cooled motor, the first heat transfer plate and the second heat transfer plate both use heat conductive materials.
As a further optional scheme for the liquid cooling motor, the first heat transfer plate and the second heat transfer plate are both flat heat pipes, or the first heat transfer plate and the second heat transfer plate are both vacuum heat transfer plates.
As a further optional scheme for the liquid cooling motor, the heat dissipation member is a shovel-type heat sink, or an insertion-type heat sink, or an aluminum extruded section type heat sink, or a cast-type heat sink.
As a further optional scheme for the liquid cooling motor, a heat conduction layer is arranged between the heat dissipation member and the casing.
As a further optional scheme for the liquid-cooled motor, the heat conducting layer is made of heat conducting silicone grease, a heat conducting pad or liquid metal.
As a further optional scheme for the liquid cooling motor, a coil pipe is pre-embedded in the wall of the casing, and an inner cavity of the coil pipe forms the liquid cooling flow channel.
As a further optional scheme for the liquid cooling motor, the casing includes a body and a sheath, a groove is formed on an outer side wall of the body, and the sheath is wrapped outside the body and cooperates with the groove to form the liquid cooling flow channel.
As a further optional scheme for the liquid cooling motor, the fan is a centrifugal blower or an axial flow fan.
The embodiment of the utility model has the following beneficial effect:
the fan drives gas to circularly flow between the inside of the shell and the outer air channel, the gas carries away heat on each structure inside the shell when flowing inside the shell, the gas transfers the heat to the heat dissipation part when flowing inside the outer air channel, and the heat is finally absorbed by cooling liquid in the liquid cooling channel. In the process, the heat on the radiating piece is transferred to the cooling liquid through the inner wall of the liquid cooling flow channel back to the inner side of the shell, so that the inner wall of the liquid cooling flow channel back to the inner side of the shell is effectively utilized, and the cooling effect of the cooling liquid is fully exerted.
In order to make the aforementioned and other objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 shows a half-section view of a liquid-cooled electric machine provided in embodiment 1 of the present invention;
fig. 2 shows a half-sectional view of a liquid-cooled motor provided in embodiment 2 of the present invention;
fig. 3 shows a schematic structural diagram of a heat sink in a liquid-cooled motor according to embodiment 2 of the present invention;
fig. 4 shows a schematic structural diagram of a heat conducting layer in a liquid-cooled motor according to embodiment 3 of the present invention.
Description of the main element symbols:
100-a housing; 110-a liquid cooling channel; 120-ventilation duct; 130-a radial bearing; 140-axial bearing; 200-circulation wind path shell; 300-a fan; 400-a heat sink; 410-a first heat transfer plate; 420-a second heat transfer plate; 500-a thermally conductive layer; 600-a rotor; 610-a thrust disc; 700-a stator; 710-stator winding.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Example 1
Referring to fig. 1, the embodiment provides a liquid cooling motor, which can cool an internal structure during a working process and is not prone to malfunction. The liquid cooling motor includes a case 100, a circulation air path housing 200, a fan 300, and a heat sink 400.
Specifically, the casing 100 has a cylindrical shape, and two radial bearings 130 and two axial bearings 140 are fixed to an inner wall of the casing 100. The two radial bearings 130 are respectively located at both ends of the inner wall of the casing 100 in the axial direction, and the rotor 600 is rotatably supported on the radial bearings 130.
The axis of the rotor 600 coincides with the axis of the casing 100, one end of the rotor 600 penetrates out of the end face of the casing 100 to serve as an output end, and the other end of the rotor 600 is fixed with a thrust disc 610 by welding or the like. The thrust disk 610 is perpendicular to the rotor 600 and is located between the two axial bearings 140. When the rotor 600 is subjected to an axial force, the axial force is balanced by the axial bearing 140 by the thrust disk 610 pressing on the axial bearing 140.
The stator 700 is fixedly coupled to an inner sidewall of the casing 100, and the stator 700 is positioned at a middle portion of the casing 100 in an axial direction and is disposed to surround the rotor 600. In addition, stator winding 710 is embedded in stator 700.
The liquid cooling flow passage 110 is disposed in the side wall of the casing 100, and the liquid cooling flow passage 110 is located in the middle of the casing 100 along the axial direction and directly faces the stator 700.
The casing 100 is provided with air ducts 120 in pairs, the air ducts 120 and the liquid cooling flow passage 110 are arranged along the axial direction of the casing 100, and the two air ducts 120 are respectively located at both sides of the liquid cooling flow passage 110.
Specifically, the circulation air path housing 200 is fixedly connected to the outer wall of the casing 100 by welding, bolting, or the like. The circulation air path housing 200 forms an outer air path in cooperation with the cabinet 100, and the outer air path is communicated with the inside of the cabinet 100 through two air paths 120.
Specifically, the fan 300 is disposed within the outer duct. After the fan 300 is started, the air can be driven to circulate between the inside of the casing 100 and the outer air duct.
Specifically, the heat sink 400 is connected to the outer wall of the casing 100, and the heat sink 400 is disposed in the middle of the casing 100 along the axial direction and directly faces the liquid cooling flow channel 110.
When the cooling device is used, the fan 300 drives air to circularly flow between the inside of the casing 100 and the external air duct, the air carries away heat on various structures inside the casing 100 when flowing inside the casing 100, the air transfers the heat to the heat sink 400 when flowing inside the external air duct, and the heat is finally absorbed by the cooling liquid in the liquid cooling flow passage 110.
In the above process, the heat of the heat sink 400 is transferred to the cooling liquid through the inner wall of the liquid cooling channel 110 facing away from the inside of the housing, so that the inner wall of the liquid cooling channel 110 facing away from the inside of the housing is effectively utilized, and the cooling effect of the cooling liquid is fully exerted.
In addition, for the liquid cooling motors with the same size but different powers, the heat generated by the internal structure of the liquid cooling motors in the working process is different. At this time, the length of the circulation air path housing 200 along the radial line direction of the casing 100 is changed, and the size of the heat sink 400 is changed, so that the heat sink 400 can have a sufficient heat exchange area to exchange heat with the air without changing the structure of the casing 100, thereby saving the design cost and the mold cost.
Example 2
Referring to fig. 2 and fig. 3, the present embodiment provides a liquid cooling motor, which can cool various internal structures during operation to prevent the structures from being overheated and causing malfunction. The liquid cooling motor includes a case 100, a circulation air path housing 200, a fan 300, and a heat sink 400.
Specifically, the casing 100 has a cylindrical shape with a horizontal axis, and two radial bearings 130 and two axial bearings 140 are fixed to an inner wall of the casing 100. The two radial bearings 130 are respectively located at both ends of the inner wall of the casing 100 in the axial direction, and the rotor 600 is rotatably supported on the radial bearings 130.
The axis of the rotor 600 coincides with the axis of the casing 100, one end of the rotor 600 penetrates out of the end face of the casing 100 to serve as an output end, and the other end of the rotor 600 is provided with a thrust disc 610. The thrust disk 610 is fixed to the rotor 600 by welding or the like, and the thrust disk 610 is perpendicular to the rotor 600 and is located between the two axial bearings 140. When the rotor 600 is subjected to an axial force, the axial force is balanced by the axial bearing 140 by the thrust disk 610 pressing on the axial bearing 140.
The stator 700 is fixedly connected to the inner sidewall of the casing 100, and the stator 700 is located at the middle of the casing 100 along the axial direction, and surrounds the rotor 600 to be in clearance fit with the rotor 600. In addition, stator winding 710 is embedded in stator 700.
The liquid cooling flow passage 110 is disposed in the side wall of the casing 100, and the liquid cooling flow passage 110 is located in the middle of the casing 100 along the axial direction and directly faces the stator 700. In this embodiment, the coil pipes are embedded in the wall of the casing 100. The coil is spiral, and the inner cavity of the coil is the liquid cooling channel 110.
In another embodiment of the present application, the cabinet 100 is composed of a body and a sheath. The outer side wall of the body is provided with a groove, and the groove is spiral. The sheath cladding is outside this body, and modes such as friction stir welding and body fixed connection are passed through at the sheath both ends, and sheath cooperation recess forms liquid cold runner 110.
The casing 100 is provided with air ducts 120 in pairs, the air ducts 120 and the liquid cooling flow passage 110 are arranged along the axial direction of the casing 100, and the two air ducts 120 are respectively located at both sides of the liquid cooling flow passage 110. One of the air ducts 120 serves as an air inlet, and the other air duct 120 serves as an air outlet.
Specifically, the circulation air path housing 200 is fixedly connected to the outer wall of the casing 100 by welding or bolting, and the circulation air path housing 200 forms an outer air duct in cooperation with the casing 100. The interior of the casing 100, the air outlet, the outer air duct and the air inlet are sequentially communicated to form a circulation air path, air inside the casing 100 enters the outer air duct through the air outlet, and air inside the outer air duct enters the interior of the casing 100 through the air inlet.
Specifically, the fan 300 is disposed within the outer duct. After the fan 300 is started, the air can be driven to circulate between the inside of the casing 100 and the outer air duct. In this embodiment, the fan 300 is bolted to the outer side wall of the casing 100 and is disposed at the air inlet.
In another embodiment of the present application, the fan 300 may be fixed on the inner wall of the circulation duct housing 200 by bolting, clamping, or the like.
In the present embodiment, the fan 300 employs a centrifugal blower.
In another embodiment of the present application, the fan 300 may also be an axial fan.
Specifically, the heat sink 400 is connected to the outer wall of the casing 100, and is disposed in the middle of the casing 100 along the axial direction, and directly faces the liquid cooling flow passage 110.
At least one heat conduction plane is disposed on an outer wall of the casing 100, the heat conduction plane is parallel to an axis of the stator 700, and the heat sink 400 is disposed corresponding to the heat conduction plane. In the present embodiment, the number of the heat conduction planes is one, and is disposed on the top surface of the cabinet 100. In another embodiment of the present application, the heat conducting planes may also be disposed on the front and rear sides of the casing 100.
In the present embodiment, the heat sink 400 is composed of one first heat transfer plate 410 and a plurality of second heat transfer plates 420. The first heat transfer plate 410 is attached to the heat conducting plane, and the second heat transfer plate 420 is disposed on a side of the first heat transfer plate 410 opposite to the heat conducting plane. The second heat transfer plates 420 are all parallel to the radial line of the casing 100 and perpendicular to the heat conducting plane, and each second heat transfer plate 420 is arranged along the normal direction of itself.
In this embodiment, the casing 100, the first heat transfer plate 410, and the second heat transfer plate 420 may be integrally cast or extruded, or may be separately manufactured and then welded or bolted to be fixed.
In this embodiment, the first heat transfer plate 410 and the second heat transfer plate 420 are made of a heat conductive material, such as copper, aluminum alloy, or ceramic.
In another embodiment of the present application, the first heat transfer plate 410 and the second heat transfer plate 420 may also employ flat plate heat pipes.
In yet another embodiment of the present application, the first heat transfer plate 410 and the second heat transfer plate 420 may also employ vacuum heat transfer plates.
In another embodiment of the present application, the heat sink 400 may also be a blade type heat sink, a tab type heat sink, an aluminum extruded type heat sink, or a cast type heat sink, and is directly mounted on the casing 100.
When in use, the fan 300 drives the air to circulate in the circulation air passage. The gas takes heat from the rotor 600, the stator 700, and the stator winding 710 while flowing inside the casing 100, and transfers the heat to the second heat transfer plate 420 while flowing inside the outer duct. Heat is further transferred between the second heat transfer plate 420, the first heat transfer plate 410, and the heat conduction plane, and is finally absorbed by the cooling liquid in the liquid-cooled flow passage 110.
In the above process, the heat of the heat sink 400 is transferred to the cooling liquid through the inner wall of the liquid cooling channel 110 facing away from the inside of the housing, so that the inner wall of the liquid cooling channel 110 facing away from the inside of the housing is effectively utilized, and the cooling effect of the cooling liquid is fully exerted. The circulation air path housing 200, the fan 300 and the heat sink 400 have simple structures, low cost and high reliability.
In addition, for the liquid cooling motors with the same size but different powers, the heat generated by the internal structure of the liquid cooling motors in the working process is different. Taking the heat conducting plane disposed on the top surface of the casing 100 as an example, the height of the circulation air path housing 200 is changed, and the height of the second heat transfer plate 420 is changed, so that the second heat transfer plate 420 can have a sufficient heat exchange area to exchange heat with air without changing the structure of the casing 100, thereby saving the design cost and the mold cost.
Example 3
Referring to fig. 4, the difference from embodiment 2 is that a heat conducting layer 500 is further disposed between the heat sink 400 and the heat conducting plane.
The heat conducting layer 500 may be made of heat conducting silicone grease, heat conducting pad, or liquid metal, which can enhance the heat transfer effect between the heat sink 400 and the casing 100.
In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above-described embodiments are merely illustrative of several embodiments of the present invention, which are described in detail and specific, but not intended to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims (10)

1. A liquid-cooled electric machine, comprising:
the liquid cooling device comprises a shell, wherein liquid cooling channels are arranged in the wall of the shell, air channels are arranged on the shell in pairs, and the two air channels are respectively positioned on two sides of the liquid cooling channels along the axis direction of the shell;
the circulating air path shell is fixedly connected with the outer wall of the machine shell and matched with the machine shell to form an outer air channel, and the outer air channel is communicated with the interior of the machine shell through the ventilation channel;
the fan is used for driving gas to circularly flow between the interior of the shell and the outer air duct; and
and the heat dissipation part is connected with the outer wall of the shell and is used for transferring the heat of the gas in the outer air channel to the shell.
2. The liquid-cooled motor of claim 1, wherein the outer wall of the housing has at least one heat conducting plane, the heat dissipating member is disposed corresponding to the heat conducting plane, the heat dissipating member includes a first heat transfer plate, the first heat transfer plate is attached to the heat conducting plane, the first heat transfer plate has a plurality of second heat transfer plates, the plurality of second heat transfer plates are all parallel to a radial line of the housing and perpendicular to the heat conducting plane, and each of the second heat transfer plates is arranged along a normal direction of the second heat transfer plate.
3. The liquid-cooled electric machine of claim 2, wherein the first heat transfer plate and the second heat transfer plate are each of a thermally conductive material.
4. The liquid-cooled motor of claim 2, wherein the first heat transfer plate and the second heat transfer plate are both flat plate heat pipes, or wherein the first heat transfer plate and the second heat transfer plate are both vacuum heat transfer plates.
5. The liquid-cooled motor of claim 1, wherein the heat sink is a blade, or a fin-insert, or an aluminum extrusion, or a cast heat sink.
6. The liquid-cooled electric machine of claim 1, wherein a thermally conductive layer is disposed between the heat sink and the housing.
7. The liquid-cooled electric machine of claim 6, wherein the heat conducting layer is made of thermally conductive silicone grease, or a thermally conductive pad, or liquid metal.
8. The liquid-cooled motor of claim 1, wherein a coil is embedded in a wall of the housing, an inner cavity of the coil forming the liquid-cooled flow path.
9. The liquid-cooled motor of claim 1, wherein the housing comprises a body and a sheath, wherein a groove is formed in an outer side wall of the body, and the sheath covers the body and cooperates with the groove to form the liquid-cooled flow channel.
10. The liquid-cooled motor of claim 1, wherein the fan is a centrifugal blower or an axial fan.
CN202120372997.9U 2021-02-09 2021-02-09 Liquid cooling motor Active CN214314874U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120372997.9U CN214314874U (en) 2021-02-09 2021-02-09 Liquid cooling motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120372997.9U CN214314874U (en) 2021-02-09 2021-02-09 Liquid cooling motor

Publications (1)

Publication Number Publication Date
CN214314874U true CN214314874U (en) 2021-09-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120372997.9U Active CN214314874U (en) 2021-02-09 2021-02-09 Liquid cooling motor

Country Status (1)

Country Link
CN (1) CN214314874U (en)

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