Heat pipe guide vane motor

Abstract

The invention discloses a heat pipe guide vane motor. The heat pipe guide vane motor comprises a machine shell, a heat pipe and a guide vane, the rotor is located in the machine shell, the stator is fixedly installed on the machine shell and arranged on the rotor in a sleeving mode, the stator is provided with a plurality of stator windings, and the stator windings are annularly arranged on the peripheral wall of the stator; the cooling assembly comprises a plurality of first pipe bodies, the cooling pipeline comprises a plurality of first pipe bodies extending in the axial direction of the stator, each first pipe body is clamped between every two adjacent stator windings, and every two adjacent first pipe bodies are communicated; and in the radial direction of the stator, one of the two first pipe bodies which are oppositely arranged is provided with a cooling liquid inlet, and the other one of the two first pipe bodies is provided with a cooling liquid outlet. According to the heat pipe guide vane motor, heat dissipation of the stator can be achieved, the multiple first pipe bodies share the cooling liquid inlet and the cooling liquid outlet, arrangement can be simplified, the pressure difference between the cooling liquid inlet and the cooling liquid outlet can be conveniently reduced, and then the cooling effect is improved.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a heat pipe guide vane motor. Background Art

[0002] In related technologies, heat pipe guide vane motors have increasingly higher requirements for power density and torque density, so motor heat dissipation has become one of the key factors limiting their performance improvements.

[0003] When the motor is used in aircraft or electric vehicles, due to the harsh working environment and high ambient temperature of the motor, natural cooling alone cannot meet the heat dissipation requirements, and forced cooling is required inside the motor. Generally speaking, the electromagnetic structure design of the motor determines the motor temperature field, which in turn seriously affects the electromagnetic performance of the motor. Therefore, while taking into account the power density and torque density, it is necessary to consider the balanced design of the motor's cooling system and electromagnetic structure to achieve a balance between the motor's electromagnetic performance and the motor's heat dissipation performance. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a heat pipe guide vane motor, which can achieve heat dissipation of the stator. At the same time, in the radial direction of the stator, one of the two first tube bodies arranged opposite to each other is provided with a coolant inlet and the other is provided with a coolant outlet, so that the multiple first tube bodies share the coolant inlet and the coolant outlet, which can simplify the layout, and the coolant inlet and the coolant outlet arranged opposite to each other are convenient for reducing the pressure difference between the coolant inlet and the coolant outlet, thereby improving the cooling effect.

[0005] According to the heat pipe guide vane motor of the embodiment of the present application, it includes: a casing; a rotor and a stator, the rotor is located in the casing, the stator is fixedly installed on the casing and sleeved on the rotor, the stator is provided with a plurality of stator windings, and the plurality of stator windings are arranged around the outer peripheral wall of the stator; a cooling component, the cooling component includes a plurality of first tube bodies, the cooling pipeline includes a plurality of first tube bodies extending along the axial direction of the stator, each of the first tube bodies is sandwiched between two adjacent stator windings, and the two adjacent first tube bodies are connected; wherein, in the radial direction of the stator, one of the two first tube bodies arranged opposite to each other is provided with a coolant inlet and the other is provided with a coolant outlet.

[0006] According to the heat pipe guide vane motor of the embodiment of the present application, its first tube body extends along the axial direction of the stator and is clamped between two adjacent stator windings. In this way, when the coolant flows in the first tube body, the heat on the stator is transferred to the stator winding and then to the first tube body, and then the heat is transferred from the tube wall of the first tube body to the coolant in the first tube body, and the heat is taken away by the flow of the coolant to achieve heat dissipation of the stator. At the same time, in the radial direction of the stator, one of the two first tube bodies arranged oppositely is provided with a coolant inlet and the other is provided with a coolant outlet, so that multiple first tube bodies share the coolant inlet and the coolant outlet, which can simplify the layout, and the coolant inlet and the coolant outlet arranged oppositely are convenient to reduce the pressure difference between the coolant inlet and the coolant outlet, thereby improving the cooling effect, and thereby improving the overload capacity of the heat pipe guide vane motor.

[0007] According to the heat pipe guide vane motor of some embodiments of the present application, the cooling assembly also includes: a plurality of second tube bodies, wherein the second tube bodies are located at the axial outer end of the stator, and the second tube bodies extend along the circumference of the stator, and two adjacent first tube bodies are connected through one first tube body.

[0008] According to the heat pipe guide vane motor of some embodiments of the present application, the stator is provided with a plurality of mounting slots, each of the mounting slots is located between two adjacent stator windings, and the first tube body is installed in the mounting slot.

[0009] According to the heat pipe guide vane motor of some embodiments of the present application, the cross-section of the first tube body is circular, and the groove shape of the installation groove is set in accordance with the shape of the first tube body.

[0010] According to the heat pipe guide vane motor of some embodiments of the present application, the cooling assembly also includes a cooling base, which is sleeved on the stator, and the plurality of first tubes are all penetrated through the cooling base, and the plurality of first tubes are distributed and spaced apart along the circumference of the cooling base.

[0011] According to the heat pipe guide vane motor of some embodiments of the present application, the cooling base is provided with a liquid inlet and a liquid outlet, the liquid inlet is connected to the coolant inlet, and the liquid outlet is connected to the coolant outlet.

[0012] According to the heat pipe guide vane motor of some embodiments of the present application, the stator includes a stator yoke and a plurality of stator teeth, the plurality of stator teeth are arranged on the circumferential inner side of the stator yoke, the stator winding is wound around the stator teeth, and the first tube body is in contact with the stator teeth and is arranged in a conformal manner with the stator teeth.

[0013] According to the heat pipe guide vane motor of some embodiments of the present application, an air gap arranged in an annular shape is defined between the stator and the rotor, and the cooling assembly also includes a thermal insulation sleeve extending along the axial direction of the stator, and the thermal insulation sleeve is arranged at the air gap, and two ends of the thermal insulation sleeve are fixedly connected to the casing to enclose and form a separation chamber separating the stator and the rotor, and the separation chamber is provided with an inlet connected to the coolant inlet and an outlet connected to the coolant outlet.

[0014] According to the heat pipe guide vane motor of some embodiments of the present application, an insulating layer is provided on the outer peripheral wall of the first tube body.

[0015] According to the heat pipe guide vane motor of some embodiments of the present application, a heat conductive layer is provided on the outer peripheral wall of the first tube body.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 A schematic diagram of a heat pipe guide vane motor according to some embodiments of the present application;

[0019] Figure 2 Schematic diagram of the cooling assembly of the heat pipe guide vane motor of some embodiments of the present application Figure 1 ;

[0020] Figure 3 A cross-sectional view of a stator of a heat pipe guide vane motor according to some embodiments of the present application;

[0021] Figure 4 A schematic diagram of the installation slots and stator windings of the heat pipe guide vane motor according to some embodiments of the present application;

[0022] Figure 5 Schematic diagram of the cooling assembly of the heat pipe guide vane motor of some embodiments of the present application Figure 2 ;

[0023] Figure 6 A partial cross-sectional view of a stator of a heat pipe guide vane motor according to some embodiments of the present application.

[0024] Reference numerals:

[0025] Heat pipe guide vane motor 100; fan blade 200;

[0026] Casing 10; rotor 20; stator 30; stator yoke 31; stator teeth 32; mounting slot 301; stator winding 40; cooling assembly 50; first tube body 51; second tube body 52; cooling base 53; liquid inlet 531; liquid outlet 532; thermal insulation sleeve 54; thermal insulation sleeve 55; air gap 60. DETAILED DESCRIPTION

[0027] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0028] In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The term "more than two" includes two or more than two situations.

[0029] In related technologies, motors have increasingly higher requirements for power density and torque density, so motor heat dissipation has become one of the key factors limiting their performance improvements.

[0030] When the motor is used in aircraft or electric vehicles, for example, the motor can be a heat pipe guide vane motor when used in an aircraft. Due to the harsh working environment and high ambient temperature of the motor, natural cooling alone cannot meet the heat dissipation requirements, and forced cooling is required in the motor. Generally speaking, the electromagnetic structure design of the motor determines the motor temperature field, which in turn seriously affects the electromagnetic performance of the motor. Therefore, while taking into account the power density and torque density, it is necessary to consider the balanced design of the motor's cooling system and electromagnetic structure to achieve a balance between the motor's electromagnetic performance and the motor's heat dissipation performance.

[0031] In this regard, the present application proposes a heat pipe guide vane motor 100 .

[0032] like Figure 1As shown, the heat pipe guide vane motor 100 according to the embodiment of the present application includes: a housing 10 , a rotor 20 , a stator 30 and a cooling assembly 50 .

[0033] The rotor 20 is located in the housing 10, and the rotor 20 is suitable for being connected to the output shaft power, for example Figure 1 As shown, the rotor 20 can be dynamically connected to the rotating shaft of the fan blade 200, and the rotor 20 can be sleeved on the rotating shaft to reduce the size occupied in the axial direction of the rotor 20, and can enhance the connection stability between the rotor 20 and the rotating shaft.

[0034] Of course, in some other implementations, the rotor 20 may also be dynamically connected to the rotating shaft of the fan blade 200 by direct connection or other connection methods, which is not limited here.

[0035] The stator 30 is fixedly mounted on the housing 10 and sleeved on the rotor 20. The stator 30 is provided with a plurality of stator windings 40. The plurality of stator windings 40 are arranged around the outer peripheral wall of the stator 30. In this way, after the stator windings 40 are energized to generate a rotating magnetic field, the rotor 20 can rotate relative to the stator 30 under the action of the rotating magnetic field, thereby driving the load of the heat pipe guide vane motor 100 to work.

[0036] In some implementations, such as Figure 1 As shown, an air gap 60 is formed between the stator 30 and the rotor 20. The setting of the air gap 60 can ensure that the rotor 20 does not interfere with the stator 30 when rotating, and the setting of the air gap 60 enables the heat generated by the stator 30 and / or the rotor 20 to be dissipated through the air gap 60, that is, the setting of the air gap 60 has a certain heat dissipation effect.

[0037] like Figure 1 As shown, the cooling assembly 50 includes a plurality of first tubes 51, and the cooling pipeline includes a plurality of first tubes 51 extending along the axial direction of the stator 30, each first tube 51 is sandwiched between two adjacent stator windings 40, and the two adjacent first tubes 51 are connected. In this way, when the coolant flows in the first tube 51, the heat on the stator 30 is transferred to the stator winding 40 and then to the first tube 51, and then the heat is transferred from the tube wall of the first tube 51 to the coolant in the first tube 51, and the heat is taken away by the flow of the coolant to achieve heat dissipation of the stator 30.

[0038] It is understandable that the coolant may include ethylene glycol coolant, which is a relatively common coolant with the advantages of good antifreeze performance, low volatility and non-flammability; or the coolant may include propylene glycol coolant: propylene glycol coolant has good antifreeze performance, low volatility and non-flammability.

[0039] In the radial direction of the stator 30 , one of the two first tube bodies 51 arranged opposite to each other is provided with a coolant inlet and the other is provided with a coolant outlet.

[0040] It can be understood that since the multiple stator windings 40 are spaced apart in the circumferential direction of the stator 30, the corresponding multiple first tube bodies 51 are also spaced apart in the circumferential direction of the stator 30. Since two adjacent first tube bodies 51 are connected, in order to maximize the coolant stroke, it is necessary to set the distance between the coolant inlet and the coolant outlet to the maximum. In the present application, in the radial direction of the stator 30, one of the two first tube bodies 51 arranged opposite to each other is provided with a coolant inlet and the other is provided with a coolant outlet, so that the stroke from the coolant inlet to the coolant outlet is maximized.

[0041] In this way, multiple first tube bodies 51 share the coolant inlet and the coolant outlet, which can simplify the layout, and the relatively arranged coolant inlet and the coolant outlet can easily reduce the pressure difference between the coolant inlet and the coolant outlet, thereby improving the cooling effect and further improving the overload capacity of the heat pipe guide vane motor 100.

[0042] According to the heat pipe guide vane motor 100 of the embodiment of the present application, the rotor 20 is located in the housing 10, the stator 30 is fixedly installed on the housing 10 and sleeved on the rotor 20, the stator 30 is provided with a plurality of stator windings 40, and the plurality of stator windings 40 are arranged around the outer peripheral wall of the stator 30, the cooling assembly 50 includes a plurality of first tubes 51, and the cooling pipeline includes a plurality of first tubes 51 extending along the axial direction of the stator 30, each first tube 51 is sandwiched between two adjacent stator windings 40, and the two adjacent first tubes 51 are connected; wherein, in the radial direction of the stator 30, one of the two first tubes 51 arranged opposite to each other is provided with a coolant inlet and the other is provided with a coolant outlet for communication. In this way, when the coolant flows in the first tube body 51, the heat on the stator 30 is transferred to the stator winding 40 and then to the first tube body 51, and then the heat is transferred from the tube wall of the first tube body 51 to the coolant in the first tube body 51, and the heat is taken away by the flow of the coolant to achieve heat dissipation of the stator 30. At the same time, in the radial direction of the stator 30, one of the two first tube bodies 51 arranged opposite to each other is provided with a coolant inlet and the other is provided with a coolant outlet, so that multiple first tube bodies 51 share the coolant inlet and the coolant outlet, which can simplify the layout, and the coolant inlet and the coolant outlet arranged opposite to each other can easily reduce the pressure difference between the coolant inlet and the coolant outlet, thereby improving the cooling effect, and thereby improving the overload capacity of the heat pipe guide vane motor 100.

[0043] In some embodiments, Figure 2 and Figure 3As shown, the cooling assembly 50 further includes: a plurality of second tubes 52 , the second tubes 52 are located at the axial outer end of the stator 30 , and the second tubes 52 extend along the circumferential direction of the stator 30 , and two adjacent first tubes 51 are connected through one first tube 51 .

[0044] Thus, two adjacent first tube bodies 51 can be connected through the second tube body 52, so as to reduce the difficulty of connecting the two adjacent first tube bodies 51. Since the multiple stator windings 40 are spaced apart in the circumferential direction of the stator 30, the corresponding multiple first tube bodies 51 are also spaced apart in the circumferential direction of the stator 30, and the second tube body 52 extends along the circumferential direction of the stator 30, so that the shape of the second tube body 52 can be adapted to the shape of the stator 30 and facilitate better connection between the two adjacent first tube bodies 51.

[0045] In some embodiments, Figure 4 As shown, the stator 30 (as Figure 3 The stator 30 in the embodiment is provided with a plurality of mounting slots 301, each of which is located between two adjacent stator windings 40. The first tube 51 (such as Figure 2 The first tube body 51) is installed in the installation groove 301.

[0046] Therefore, by providing the mounting groove 301, the first tube body 51 can be installed in the mounting groove 301, so as to reduce the difficulty of installing the first tube body 51. At the same time, the side wall of the mounting groove 301 can also play a certain limiting role on the first tube body 51, thereby enhancing the structural stability of the first tube body 51. In particular, providing the mounting groove 301 on the stator 30 can reduce the influence of the setting of the first tube body 51 on the radial size of the stator 30.

[0047] In some embodiments, a water-absorbing material is provided between the inner wall of the installation groove and the first tube body 51. The water-absorbing material may be a desiccant. Thus, when the first tube body 51 and the stator winding 40 exchange heat, the desiccant can be used to absorb part of the condensed water generated on the surface of the first tube body 51, thereby achieving the effect of drying the installation groove. In this way, the dryness of the heat pipe guide vane motor 100 can be improved, and the safety of the heat pipe guide vane motor 100 can be improved.

[0048] It is understood that the desiccant in this application is a substance that can absorb moisture in the air, and is usually used to keep the environment dry and prevent items from getting wet. There are many types of desiccant, which can be selected according to different usage scenarios and needs. The following are some of the main types of desiccant:

[0049] Physical adsorption desiccant: such as silica gel, alumina gel, molecular sieve, activated carbon, bone charcoal, charcoal, mineral desiccant, or activated clay, etc. Its drying principle is to physically adsorb water molecules into its own structure.

[0050] Chemical adsorption desiccants: such as calcium sulfate and calcium chloride, which dry by combining with water to form hydrates; acidic desiccants such as concentrated sulfuric acid, phosphorus pentoxide, anhydrous copper sulfate; alkaline desiccants such as solid caustic soda, lime and soda lime; and neutral desiccants such as anhydrous calcium chloride and anhydrous magnesium sulfate.

[0051] In some embodiments, a heat exchange fin may be provided in the first tube body 51 . The heat exchange fin is connected to the inner circumferential wall of the first tube body 51 . The heat exchange fin may extend in the first tube body 51 along the axial direction of the first tube body 51 .

[0052] Therefore, when the coolant flows in the first tube body 51, the heat on the stator 30 is transferred to the stator winding 40 and then transferred to the first tube body 51. Then the heat is transferred from the tube wall of the first tube body 51 to the heat exchange fins, and then conducted from the heat exchange fins to the coolant in the first tube body 51. The heat is taken away by the flow of the coolant to achieve heat dissipation of the stator 30.

[0053] In the present application, by providing the heat exchange fins, the heat exchange area between the tube wall of the first tube body 51 and the coolant can be increased, thereby improving the heat exchange efficiency and further improving the heat dissipation effect on the stator 30 .

[0054] At the same time, since the heat exchange fins can extend axially along the first tube body 51 inside the first tube body 51, the extension direction of the heat exchange fins is the same as the flow direction of the coolant (the axial direction of the stator). In this way, the setting of the heat exchange fins can avoid obstructing the flow of the coolant, thereby ensuring the smooth flow of the coolant.

[0055] In some embodiments, a plurality of heat exchange fins may be provided, and the plurality of heat exchange fins are spaced apart in the circumferential direction of the first tube body 10 .

[0056] Therefore, when the coolant flows in the first tube body 51, the heat on the stator 30 is transferred to the stator winding 40 and then transferred to the first tube body 51. Then, the heat is transferred to the heat exchange fins by the tube wall of the first tube body 51 at different positions in the radial direction of the first tube body 51, and is conducted by the heat exchange fins to the coolant in the first tube body 51. The heat is taken away by the flow of the coolant to achieve heat dissipation of the stator 30.

[0057] At the same time, the plurality of heat exchange fins are spaced apart in the circumferential direction of the first tube body 10 , which can avoid the obstruction of the flow of the coolant caused by the arrangement of the heat exchange fins, thereby ensuring the smooth flow of the coolant.

[0058] In some embodiments, a plurality of heat exchange fins may be provided, and the heat exchange areas of the plurality of heat exchange fins gradually increase in the flow direction of the coolant.

[0059] It can be understood that since the flow of coolant will cause heat accumulation, the heat exchange area of ​​multiple heat exchange fins arranged in the flow direction of the coolant gradually increases, so that the change in heat exchange area can match the heat accumulation caused by the flow of coolant. That is to say, in the flow direction of the coolant, the heat of the coolant is larger, therefore, the heat exchange capacity of the heat exchange fins needs to be stronger to absorb heat.

[0060] In the present application, the heat exchange areas of the multiple heat exchange fins are gradually increased by being arranged in the flow direction of the coolant, which can reduce the problem of decreased heat exchange capacity of the downstream coolant caused by the coolant.

[0061] In some implementations, the height of the plurality of heat exchange fins gradually increases in the flow direction of the coolant. It is understandable that, when other dimensions of the plurality of heat exchange fins remain unchanged, the height of the plurality of heat exchange fins gradually increases, so that the heat exchange area of ​​the plurality of heat exchange fins gradually increases, that is, the heat exchange capacity of the plurality of heat exchange fins gradually increases, so that the change in the heat exchange area of ​​the heat exchange fins matches the accumulation of heat caused by the flow of the coolant, which can reduce the problem of a decrease in the heat exchange capacity of the downstream coolant caused by the coolant.

[0062] It should be noted that the gradual increase in the height of the plurality of heat exchange fins may be a gradual increase or a non-gradual increase, which is not limited here.

[0063] In some implementations, the density of the plurality of heat exchange fins gradually increases in the flow direction of the coolant.

[0064] It can be understood that, when other dimensions of the multiple heat exchange fins remain unchanged, the density of the multiple heat exchange fins gradually increases, so that the heat exchange area of ​​the multiple heat exchange fins gradually increases, that is, the heat exchange capacity of the multiple heat exchange fins gradually increases. In this way, the change in the heat exchange area of ​​the heat exchange fins matches the accumulation of heat caused by the flow of the coolant, which can reduce the problem of decreased heat exchange capacity of the downstream coolant caused by the coolant.

[0065] It should be noted that the density of the plurality of heat exchange fins may be gradually increased in a gradual manner or in a non-gradual manner, which is not limited here.

[0066] In some embodiments, when the flow rate of the coolant is constant, the smaller the cross-sectional area of ​​the mounting groove 301, the better the cooling effect. However, considering the performance parameters of the heat pipe guide vane motor 100, the magnetic field distribution of the motor also needs to be considered to avoid unnecessary interference with the magnetic field of the heat pipe guide vane motor 100.

[0067] In some implementations, the cross-sectional width of the mounting groove 301 ranges from 5.5 mm to 6 mm. For example, the cross-sectional width of the mounting groove 301 is 5.5 mm, or the cross-sectional width of the mounting groove 301 is 5.8 mm, or the cross-sectional width of the mounting groove 301 is 6 mm. That is, when the cross-sectional width of the mounting groove 301 satisfies the above range of values, it can ensure that the temperature field of the heat pipe guide vane motor 100 under different operating conditions, the iron loss and the permanent magnet eddy current loss under high-speed conditions are small, and the cooling effect of the heat pipe guide vane motor 100 under overload and high-speed conditions is good.

[0068] It can be understood that the first tube body 51 is installed in the installation groove 301 so that the volume occupied by the first tube body 51 is exactly the increment of the volume in the groove after the groove depth of the installation groove 301 is increased. In this way, it can ensure that the temperature field of the heat pipe guide vane motor 100 under different working conditions, the iron loss and the permanent magnet eddy current loss under high-speed conditions are small, and the cooling effect of the heat pipe guide vane motor 100 under overload and high-speed conditions is good.

[0069] In some embodiments, the cross section of the first tube body 51 is circular, and the groove shape of the installation groove 301 is arranged in accordance with the shape of the first tube body 51 .

[0070] Therefore, by setting the cross section of the first tube body 51 to be circular, it can be ensured that the first tube body 51 is heated more evenly during heat conduction, thereby reducing the temperature difference between two adjacent stator windings 40 .

[0071] In some embodiments, Figure 5 As shown, the cooling assembly 50 further includes a cooling base 53 , which is sleeved on the stator 30 , and a plurality of first tubes 51 are all penetrated through the cooling base 53 , and the plurality of first tubes 51 are distributed and spaced apart along the circumference of the cooling base 53 .

[0072] Therefore, by setting up the cooling base 53, the structure of the multiple first tube bodies 51 is relatively stable. When the cooling assembly 50 needs to be assembled, the multiple first tube bodies 51 can be first installed to the cooling base 53, and then the cooling base 53 and the first tube bodies 51 can be directly and synchronously installed to the target position, thereby reducing the difficulty of installing the first tube bodies 51.

[0073] In some embodiments, the cooling base 53 is provided with a liquid inlet 531 and a liquid outlet 532 , wherein the liquid inlet 531 is connected to the cooling liquid inlet, and the liquid outlet 532 is connected to the cooling liquid outlet, thereby reducing the difficulty of the cooling liquid entering and exiting the first tube body 51 .

[0074] In some embodiments, Figure 3 As shown, the stator 30 includes a stator yoke 31 and a plurality of stator teeth 32, the plurality of stator teeth 32 are arranged on the circumferential inner side of the stator yoke 31, the stator winding 40 is arranged around the stator teeth 32, and the first tube 51 (please refer to Figure 2The first tube body 51) is in close contact with the stator teeth 32 and is arranged in a conformal manner with the stator teeth 32.

[0075] As a result, the first tube body 51 can fit tightly against the stator tooth portion 32 , thereby reducing the impact on the external dimensions of the stator tooth portion 32 .

[0076] In some embodiments, Figure 1 As shown, an annular air gap 60 is defined between the stator 30 and the rotor 20. Figure 6 As shown, the cooling assembly 50 also includes a heat-insulating sleeve 55 extending along the axial direction of the stator 30. The heat-insulating sleeve 55 is arranged at the air gap 60. The two ends of the heat-insulating sleeve 55 are fixedly connected to the casing 10 to enclose and form a separation chamber that separates the stator 30 and the rotor 20. The separation chamber is provided with an inlet connected to the coolant inlet and an outlet connected to the coolant outlet.

[0077] For example, the two ends of the insulation sleeve 55 are fixedly connected to the casing 10 to enclose a separation chamber that separates the stator 30 and the rotor 20. The separation chamber is provided with an inlet connected to the coolant inlet and an outlet connected to the coolant outlet. It can be understood that the main heat source of the heat pipe guide vane motor 100 is on the stator 30 side, and the rotor 20 is not the largest heat source. In this configuration, the stator 30 and the rotor 20 are separated by the insulation sleeve 55, so that the cooling assembly 50 can be confined to the enclosed space of the stator 30 and the winding, and the heat is dissipated by the coolant, and the rotor 20 is isolated.

[0078] In some embodiments, an insulating layer is disposed on the outer peripheral wall of the first tube body 51 .

[0079] It is understandable that after the stator winding 40 is energized to generate a rotating magnetic field, the first tube body 51 may become charged. Therefore, in the present application, an insulating layer is provided on the outer peripheral wall of the first tube body 51, and the insulating layer can be used to achieve insulation between the first tube body 51 and the stator 30, thereby preventing the first tube body 51 from being charged.

[0080] In some embodiments, an outer peripheral wall of the second tube 52 is provided with an insulating layer.

[0081] It is understandable that after the stator winding 40 is energized to generate a rotating magnetic field, the second tube body 52 may become charged. Therefore, in the present application, an insulating layer is provided on the outer peripheral wall of the second tube body 52, and the insulating layer can be used to achieve insulation between the second tube body 52 and the stator 30, thereby preventing the second tube body 52 from being charged.

[0082] In some implementations, the insulating layer can be coated on the outer surface of the first tube body 51, or the insulating layer can be welded to the outer surface of the first tube body 51. Of course, the thermal conductive layer can also be fixed to the outer surface of the first tube body 51 by other means, which is not limited here.

[0083] In some implementations, the material of the insulating layer may include but is not limited to plastic, rubber, glass, ceramic, and other structures with insulating properties.

[0084] In some embodiments, a heat-conducting layer is disposed on the outer peripheral wall of the first tube body 51, and is in heat-conducting contact with the stator 30. Thus, the heat-conducting layer can be used to reduce the contact thermal resistance between the stator 30 and the first tube body 51, thereby improving the heat dissipation efficiency.

[0085] For example, the heat-conducting layer may be a thermal interface material (TIM for short), and the thermal interface material may be used to reduce the contact thermal resistance between the stator 30 and the first tube body 51 , thereby improving the heat dissipation efficiency.

[0086] In some embodiments, the thermal interface material may include: a thermally conductive gasket: a thermally conductive gasket is a sheet material prepared by heating and curing with a high molecular polymer material as a matrix and a filler and an auxiliary agent having a high thermal conductivity.

[0087] In some embodiments, the thermal interface material may include: thermal conductive silicone grease, which is generally made of a high thermal conductive solid as a filler and a liquid with good fluidity and a certain viscosity as a matrix through mixing and degassing.

[0088] In some embodiments, the thermal interface material may include: thermally conductive gel, the mechanism of action of the thermally conductive gel is to fill the uncured liquid polymer into the interface of the electronic device manually or automatically, and then cure it into a thermosetting polymer material under certain conditions, so as to achieve maximum fit between the two phase interfaces and reduce gaps.

[0089] In some embodiments, the thermal interface material may include: a thermally conductive phase change material, which can change from a solid state to a liquid state as the temperature changes, and the heat can be removed through the phase change enthalpy generated therein.

[0090] In some embodiments, the thermal interface material may include: a ceramic-based thermal interface material. Ceramics have both high thermal conductivity and excellent electrical insulation, and are particularly suitable for fields requiring electrical insulation.

[0091] In some embodiments, the thermal interface material may include: carbon materials, such as graphene, diamond, and carbon nanotubes, which have been proven to have high thermal conductivity. Therefore, using carbon materials as thermal conductive fillers is expected to significantly improve the thermal conductivity of polymers and prepare high-performance thermal interface materials.

[0092] In some implementations, the thermal conductive layer can be coated on the outer surface of the first tube body 51, or the thermal conductive layer 44 can be welded to the outer surface of the first tube body 51. Of course, the thermal conductive layer can also be fixed to the outer surface of the first tube body 51 by other means, which is not limited here.

[0093] In some embodiments, the first tube body 51 includes a copper tube. It is understood that copper is an excellent thermal conductive material with a high thermal conductivity. Setting the first tube body 51 as a copper tube can more effectively conduct the heat generated by the heat pipe guide vane motor 100, so that the heat is quickly transferred from the stator winding 40 to the first tube body 51, thereby improving the heat dissipation efficiency. In addition, the use of a copper tube can effectively resist oil corrosion and extend the service life of the first tube body 51.

[0094] In some embodiments, the second tube body 52 includes a plastic hose, so that two adjacent first tube bodies 51 can be connected by the plastic hose to facilitate molding and assembly.

[0095] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0096] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

[0097] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0098] Obviously, those skilled in the art can make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if these modifications and variations of this specification fall within the scope of the claims of this specification and their equivalents, this specification is also intended to include these modifications and variations.

Claims

1. A heat pipe guide vane motor (100), characterized in that: include: Housing (10); A rotor (20) and a stator (30), wherein the rotor (20) is located in the housing (10), the stator (30) is fixedly mounted on the housing (10) and sleeved on the rotor (20), and the stator (30) is provided with a plurality of stator windings (40), and the plurality of stator windings (40) are arranged around the outer peripheral wall of the stator (30); A cooling assembly (50), the cooling assembly (50) comprising a plurality of first tubes (51), the cooling pipeline comprising a plurality of first tubes (51) extending along the axial direction of the stator (30), each of the first tubes (51) being sandwiched between two adjacent stator windings (40), and the two adjacent first tubes (51) being connected; Wherein, in the radial direction of the stator (30), one of the two first tube bodies (51) arranged opposite to each other is provided with a coolant inlet and the other is provided with a coolant outlet.

2. The heat pipe guide vane motor (100) according to claim 1, characterized in that: The cooling assembly (50) further includes: a plurality of second tube bodies (52), wherein the second tube bodies (52) are located at the axial outer end of the stator (30), and the second tube bodies (52) extend along the circumference of the stator (30), and two adjacent first tube bodies (51) are connected via one of the first tube bodies (51).

3. The heat pipe guide vane motor (100) according to claim 1, characterized in that: The stator (30) is provided with a plurality of installation slots (301), each of the installation slots (301) is located between two adjacent stator windings (40), and the first tube (51) is installed in the installation slot (301).

4. The heat pipe guide vane motor (100) according to claim 3, characterized in that: The cross section of the first tube body (51) is circular, and the groove shape of the installation groove (301) is arranged in accordance with the shape of the first tube body (51).

5. The heat pipe guide vane motor (100) according to claim 1, characterized in that: The cooling assembly (50) further comprises a cooling base (53), wherein the cooling base (53) is sleeved on the stator (30), and the plurality of first tubes (51) are all passed through the cooling base (53), and the plurality of first tubes (51) are distributed and spaced apart along the circumference of the cooling base (53).

6. The heat pipe guide vane motor (100) according to claim 5, characterized in that: The cooling base (53) is provided with a liquid inlet (531) and a liquid outlet (532), wherein the liquid inlet (531) is communicated with the cooling liquid inlet, and the liquid outlet (532) is communicated with the cooling liquid outlet.

7. The heat pipe guide vane motor (100) according to claim 1, characterized in that: The stator (30) comprises a stator yoke (31) and a plurality of stator teeth (32), wherein the plurality of stator teeth (32) are arranged on the circumferential inner side of the stator yoke (31), the stator winding (40) is wound around the stator teeth (32), and the first tube (51) is in contact with the stator teeth (32) and is arranged in a conformal manner with the stator teeth (32).

8. The heat pipe guide vane motor (100) according to claim 7, characterized in that: An air gap (60) arranged in an annular shape is defined between the stator (30) and the rotor (20), and the cooling assembly (50) further comprises a heat insulating sleeve (55) extending along the axial direction of the stator (30), wherein the heat insulating sleeve (55) is arranged at the air gap (60), and two ends of the heat insulating sleeve (55) are fixedly connected to the casing (10) to enclose and form a separation chamber separating the stator (30) and the rotor (20), wherein the separation chamber is provided with an inlet connected to the coolant inlet and an outlet connected to the coolant outlet.

9. The heat pipe guide vane motor (100) according to any one of claims 1 to 8, characterized in that: The outer peripheral wall of the first tube body (51) is provided with an insulating layer.

10. The heat pipe guide vane motor (100) according to any one of claims 1 to 8, characterized in that: The outer peripheral wall of the first tube body (51) is provided with a heat conducting layer.

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