Cooling motor and manufacturing method thereof

Abstract

The invention relates to a cooling motor and a manufacturing method thereof, the cooling motor comprises a shell, a coil and a cooling flow channel, and the shell is provided with an accommodating cavity; the coil is arranged in the accommodating cavity; the cooling flow channel is arranged in the shell and integrally formed with the shell, no cooling pipe is arranged in the cooling flow channel, and cooling water directly makes contact with the shell. The cooling flow channel and the shell are integrated, and no gap exists between the cooling pipeline and the shell, so that sufficient heat exchange is facilitated, heat is taken away, normal operation of the motor can be maintained, heat radiation can be reduced, and the influence on other equipment can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of active vibration reduction, and in particular to a cooling motor and a manufacturing method thereof. Background Art

[0002] Active vibration reduction devices are key technologies for integrated circuit manufacturing, precision measurement, medical testing and other equipment. Active vibration reduction devices are generally made up of active components and low-rigidity passive vibration isolation components in parallel, and currently active components are generally motors. The vibration condition of the load is measured by the sensor, the output force of the motor is calculated, and then applied to the load in reverse to offset the load vibration, thereby greatly reducing the vibration.

[0003] The motor usually consists of a stator and a mover, which includes a coil. When the motor is running, the coil is the largest source of heat. However, the continuous accumulation of heat not only affects the operation of the motor, but also radiates heat to the surroundings. This extra heat will have a huge impact on other devices.

[0004] In the related prior art, water-cooled or oil-cooled motors usually dissipate heat from the coil by providing a groove in the housing and laying a water-cooling or oil-cooling pipe in the groove. However, there will inevitably be a gap between the cooling pipe or oil-cooling pipe and the groove, which will reduce the heat conduction efficiency and thus reduce the heat dissipation effect of the coil.

[0005] In the related prior art, there are also attempts to use solutions without laying water cooling or oil cooling pipes, but the sealing performance cannot be guaranteed and the risk of oil and water leakage is relatively high. Summary of the invention

[0006] Based on the above description, the present invention provides a cooling motor and a manufacturing method thereof, aiming to solve the problems of poor cooling effect or oil and water leakage of existing motors.

[0007] The technical solution of the present invention to solve the above technical problems is as follows:

[0008] In a first aspect, a cooling motor comprises:

[0009] A housing having a receiving cavity;

[0010] A coil is disposed in the accommodating cavity;

[0011] The cooling channel is arranged in the shell and is integrally formed with the shell. There is no cooling pipe in the cooling channel, and cooling water directly contacts the shell.

[0012] Based on the above technical solution, the present invention can also be improved as follows.

[0013] Furthermore, the cooling channel is formed by drilling holes in the shell along a predetermined path, and a plug is provided at one end of the cooling channel connected to the outside for sealing.

[0014] Further, the cooling channel includes a first channel and a channel unit, the channel unit is configured as a pair, the channel unit is symmetrically arranged with the defined axis as the symmetry axis, the channel unit includes a second channel, a third channel, a fourth channel and a fifth channel, one end of the second channel extends toward the accommodating cavity, the third channel extends toward the second channel and is connected to the second channel, the fourth channel extends toward the third channel and is connected to the third channel, and the fourth channel intersects with the first channel, and one end of the fifth channel extends toward the second channel and is connected to the accommodating cavity. The first flow channel is connected to the second flow channel, and both ends of the first flow channel, one end of the second flow channel away from the accommodating chamber, one end of the third flow channel away from the second flow channel, one end of the fourth flow channel away from the third flow channel, and one end of the fifth flow channel away from the second flow channel are all connected to the outside of the shell, and the other end of the fifth flow channel serves as the liquid inlet or the liquid outlet, and both ends of the first flow channel, one end of the second flow channel away from the accommodating chamber, one end of the third flow channel away from the second flow channel, and one end of the fourth flow channel away from the third flow channel are all provided with the plug.

[0015] Furthermore, the coil is adhered to the side wall of the accommodating cavity.

[0016] Furthermore, it includes a cover plate, which is arranged on the shell and corresponds to the accommodating cavity.

[0017] Furthermore, the shell has a first surface and a second surface that are arranged opposite to each other, and both the first surface and the second surface are provided with a heat insulation board.

[0018] In a second aspect, a method for manufacturing a cooling motor is provided, wherein the method is applicable to the cooling motor described in the first aspect, and comprises:

[0019] The shell is punched to form the cooling channel, and a plug is provided at one end of the cooling channel connected to the outside for sealing.

[0020] In a third aspect, a method for manufacturing a cooling motor is provided, wherein the method is applicable to the cooling motor described in the first aspect, and comprises the following steps:

[0021] The pre-buried cooling pipe is clamped and fixed in the die-casting cavity of the shell;

[0022] The housing, the coil and the cooling tube are die-casted into one piece by a die-casting process;

[0023] The cooling tube is removed.

[0024] Furthermore, the removing of the cooling tube includes adding concentrated sulfuric acid to the cooling tube made of metal to dissolve the cooling tube.

[0025] Furthermore, the removing of the cooling tube includes adding hydrofluoric acid to the cooling tube made of ceramic material to dissolve the cooling tube.

[0026] Further, the removing of the cooling pipe comprises the following steps:

[0027] Adding water to a cooling tube consisting of a sodium chloride tube and a flexible metal inner core to dissolve the sodium chloride tube;

[0028] Then take out the flexible metal inner core.

[0029] Further, removing the cooling pipe comprises:

[0030] Applying pressure to the die-cast part of the housing, the coil and the cooling tube, which are die-casted into one piece and in a convex shape, by means of a pressure device so as to squeeze and rupture the cooling tube;

[0031] Then inject fluid into the cooling channel to flush out the debris.

[0032] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0033] (1) The cooling channel of the present application is integrated with the shell, and there is no gap between the cooling channel and the shell, which is conducive to sufficient heat exchange and takes away the heat, which can not only maintain the normal operation of the motor, but also reduce heat radiation and reduce the impact on other equipment.

[0034] (2) The manufacturing method of the cooling channel of the present application can eliminate the cooling pipe, increase the cross-sectional area of ​​the cooling channel, increase the flow rate of the coolant, and be more conducive to the heat conduction of the coil, thereby improving the efficiency of heat exchange. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is an assembly diagram of a cooling motor embodiment 1 provided by the present invention;

[0036] Figure 2 A vertical cross-sectional view of a cooling motor embodiment 1 provided by the present invention;

[0037] Figure 3 It is a general assembly diagram of some embodiments of a cooling motor embodiment 2 provided by the present invention;

[0038] Figure 4 A partial assembly diagram of some embodiments of a cooling motor embodiment 2 provided by the present invention;

[0039] Figure 5Elevated cross-sectional views of other embodiments of a cooling motor embodiment 2 provided by the present invention;

[0040] Figure 6 A vertical cross-sectional view of a cooling motor embodiment 2 provided by the present invention;

[0041] Figure 7 A flowchart of an embodiment of a method for manufacturing a cooling motor provided by the present invention;

[0042] Figure 8 A structural schematic diagram of Embodiment 5 of a method for manufacturing a cooling motor provided by the present invention;

[0043] Fig. 9 A structural schematic diagram of Embodiment 6 of a method for manufacturing a cooling motor provided by the present invention;

[0044] Fig.10 A flowchart of another embodiment of a method for manufacturing a cooling motor provided by the present invention;

[0045] Fig.11 A schematic structural diagram of another embodiment of a method for manufacturing a cooling motor provided by the present invention.

[0046] The reference numerals are as follows:

[0047] L1, define the axis;

[0048] 10. housing; 11. accommodating cavity;

[0049] 20. Coil;

[0050] 30. Cooling channel; 31. First channel; 32. Channel unit; 321. Second channel; 322. Third channel; 323. Fourth channel;

[0051] 40. Plug;

[0052] 50. Cover plate;

[0053] 60. Connector;

[0054] 70. Upper sand box; 71. First mold cavity; 72. Casting hole;

[0055] 80, lower sand box; 81, second mold cavity;

[0056] 90. Sand core. DETAILED DESCRIPTION

[0057] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0059] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0060] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0061] Reference Figures 1 to 6 As shown, the present invention provides a technical solution: a cooling motor, including a shell 10, a coil 20 and a cooling channel 30, the shell 10 has a accommodating cavity 11; the coil 20 is arranged in the accommodating cavity 11; the cooling channel 30 is arranged in the shell 10 and is integrally formed with the shell 10, there is no cooling pipe in the cooling channel 30, and the cooling water is in direct contact with the shell 10.

[0062] Exemplarily, the cooling channel 30 may be water-cooled, oil-cooled, or cooled by other media.

[0063] In this embodiment, when the motor is running, the coil 20 is the largest source of heat. Therefore, by forming the cooling channel 30 and the housing 10 as one, not only the cooling channel 30 and the housing 10 are completely fitted together without gaps, but also the wall thickness of the cooling channel 30 and the accommodating cavity 11 is thinner, so that the cooling channel 30 is closer to the coil 20. This is conducive to sufficient heat exchange and taking away the heat, which can not only maintain the normal operation of the motor, but also reduce heat radiation and reduce the impact on other equipment.

[0064] Reference Figures 1 to 6 As shown, in some embodiments, a cover plate 50 is included, and the cover plate 50 is disposed on the shell 10 , and the cover plate 50 corresponds to the accommodating cavity 11 .

[0065] In this embodiment, the cover plate 50 and the housing 10 can be disassembled and assembled, and a maintenance channel is reserved for the coil 20, thereby facilitating replacement or maintenance of the coil 20.

[0066] Reference Figures 1 to 6 As shown, in some embodiments, the housing 10 has a first surface and a second surface that are oppositely disposed, and both the first surface and the second surface are provided with a heat insulation board.

[0067] For example, the first surface may be the top surface of the shell, and the second surface may be the bottom surface of the shell. The material of the heat insulation board may be EPDM rubber or ethylene-vinyl acetate copolymer.

[0068] In this embodiment, the heat insulation board can prevent heat from being transferred outward, thereby reducing the impact on the ambient temperature.

[0069] Reference Figures 1 to 6 As shown, in some embodiments, a pair of connectors 60 are included, and the pair of connectors 60 are connected to the liquid inlet and the liquid outlet in a one-to-one correspondence.

[0070] In this embodiment, the connector 60 is conducive to connecting the external pipe and facilitating the assembly and disassembly of the external pipe.

[0071] Next, a specific implementation of the cooling channel 30 is described with examples.

[0072] Example 1

[0073] Reference Figure 1~2 As shown, in some embodiments, a cooling channel 30 is formed by drilling holes in the housing 10 along a predetermined path, and a plug 40 is provided at one end of the cooling channel 30 that is connected to the outside for sealing.

[0074] In this embodiment, the cooling channel 30 is formed by punching holes first, ensuring that the cooling channel 30 is integrated with the housing 10, and ensuring that there is no gap between the cooling channel 30 and the housing 10. After the punching is completed, the end of the cooling channel 30 connected to the outside is blocked by the plug 40, which seals the cooling channel 30 and ensures that the cooling medium flows in the cooling channel 30.

[0075] Reference Figure 1~2 As shown, in some embodiments, the cooling channel 30 includes a first channel 31 and a channel unit 32, the channel unit 32 is configured as a pair, the pair of channel units 32 are symmetrically arranged with the defined axis L1 as the symmetry axis, the channel unit 32 includes a second channel 321, a third channel 322, a fourth channel 323 and a fifth channel, one end of the second channel 321 extends toward the accommodating cavity 11, the third channel 322 extends toward the second channel 321 and communicates with the second channel 321, the fourth channel 323 extends toward the third channel 322 and communicates with the third channel 322, and the fourth channel 323 intersects with the first channel 31, and one end of the fifth channel Extending toward the second flow channel 321 and connected with the second flow channel 321, both ends of the first flow channel 31, one end of the second flow channel 321 away from the accommodating chamber 11, one end of the third flow channel 322 away from the second flow channel 321, one end of the fourth flow channel 323 away from the third flow channel 322 and one end of the fifth flow channel away from the second flow channel 321 are all connected with the outside of the shell 10, and the other end of the fifth flow channel serves as a liquid inlet or a liquid outlet, and both ends of the first flow channel 31, one end of the second flow channel 321 away from the accommodating chamber 11, one end of the third flow channel 322 away from the second flow channel 321 and one end of the fourth flow channel 323 away from the third flow channel 322 are all provided with plugs 40.

[0076] Exemplarily, the plug 40 and the first flow channel 31 , the second flow channel 321 , the third flow channel 322 and the fourth flow channel 323 may be connected by transition fit or interference fit, or by threaded connection.

[0077] In this embodiment, the coil 20 can be cooled and the cooling channel 30 can be easily manufactured, thereby improving work efficiency. That is, after the shell 10 is manufactured, the holes can be punched along the trajectory of the cooling channel 30 by a punching device.

[0078] Example 2

[0079] Reference Figures 3 to 6 As shown, the coil 20 is adhered to the side wall of the accommodating cavity 11 .

[0080] Exemplarily, cooling the motor to Figure 3~4 6 is used as a reference, the connector 60 can be located at the top or front side of the housing 10. The coil 20 and the accommodating cavity 11 can be adhered by solid glue or liquid glue.

[0081] In this embodiment, the coil 20 is fixed to the accommodating chamber 11, and the coil 20 is in close contact with the side wall of the accommodating chamber 11, thereby preventing a gap from being generated between the coil 20 and the side wall of the accommodating chamber 11. This is more conducive to heat conduction of the coil 20 and improves the efficiency of heat exchange.

[0082] In some embodiments, the connector 60 is configured in a square shape.

[0083] In this embodiment, the square connector 60 not only has good strength, but also has a small water channel turning radius, which can better resist the impact of cooling water and ensure the service life of the connector 60. In addition, the square connector 60 can ensure that the thread interface is regular when opening the thread, so as to facilitate the connection of the standard quick-tightening plug.

[0084] The present invention provides a technical solution: a method for manufacturing a cooling motor, which is applicable to the above-mentioned cooling motor and comprises the following steps:

[0085] The shell 10 is punched to form a cooling channel 30 , and a plug 40 is provided at one end of the cooling channel 30 communicating with the outside for sealing.

[0086] Reference Figure 7 As shown, the present invention provides a technical solution: a method for manufacturing a cooling motor, the manufacturing method is applicable to the above-mentioned cooling motor, and comprises the following steps:

[0087] S11, using the embedded cooling pipe to be clamped and fixed in the die-casting cavity of the housing 10;

[0088] S12, die-casting the housing 10, the coil 20 and the cooling tube into one body through a die-casting process.

[0089] S13, remove the cooling pipe.

[0090] Example 3

[0091] S13 may include:

[0092] Concentrated sulfuric acid is added to the metal cooling tube to dissolve the cooling tube.

[0093] Exemplarily, the metal material may be iron or the like.

[0094] In this embodiment, since the metal cooling tube has a higher melting point than the aluminum shell, and based on the principle that iron is soluble in acid but aluminum is not, the metal cooling tube can be dissolved.

[0095] Example 4

[0096] S13 may include:

[0097] Hydrofluoric acid is added to the cooling tube made of ceramic material to dissolve the cooling tube.

[0098] In this embodiment, since the ceramic cooling tube has a higher melting point than the aluminum shell 10 and based on the principle that ceramic is soluble in acid while aluminum is not, the ceramic cooling tube can be dissolved.

[0099] Example 5

[0100] Reference Figure 8 As shown, S13 may include the following steps:

[0101] Adding water to a cooling tube consisting of a sodium chloride tube and a flexible metal inner core to dissolve the sodium chloride tube;

[0102] Then take out the flexible metal inner core.

[0103] Example 6

[0104] Reference Fig. 9 As shown, S13 may include the following steps:

[0105] The housing 10, the coil 20 and the cooling tube are die-casted into one piece and the convex die-cast part is pressed by a pressure device to squeeze and rupture the cooling tube made of ceramic material;

[0106] Then inject fluid into the cooling channel to flush out the debris.

[0107] Exemplarily, the pressure device may be a cylinder, a hydraulic cylinder or an electric cylinder, etc. The fluid may be a gas or a liquid, etc.

[0108] In this embodiment, based on the principle that metals are ductile but ceramics are not, the cooling tube made of ceramic material is squeezed and broken without damaging the surface die-cast part, and the fragments are finally removed.

[0109] In the above-mentioned embodiments 3 to 6, due to the presence of the cooling pipe, the distance between the cooling pipe and the coil 20 is increased, so that there is a certain wall thickness between the two. Therefore, by removing the cooling pipe and increasing the cross-sectional area of ​​the cooling channel 30, the flow rate of the coolant in the cooling channel 30 can be increased, thereby enhancing the cooling effect.

[0110] Reference Figures 10-11 As shown, the manufacturing method of the cooling motor can also be manufactured by the following steps:

[0111] S21, making two sand boxes and sand cores 90, forming a first cavity 71 in the upper sand box 70, and reserving a pouring hole 72 in the upper sand box 70 that is connected to the first cavity 71, forming a second cavity 81 in the lower sand box 80, and marking the placement position of the sand core 90 in the second cavity 81;

[0112] S22, firstly placing a core support along the shape trajectory of the sand core 90 based on the placement position of the sand core 90, then placing the sand core 90 on the core support, and finally closing the upper flask 70 with the lower flask 80, so that the first cavity 71 and the second cavity 81 form a connected body cavity;

[0113] S23, pouring molten metal into the connector cavity through the pouring hole 72, so that the molten metal solidifies in the connector cavity to form a connector, and forming a cooling channel 30 through the sand core 90;

[0114] S24, cleaning the sand core 90 in the cooling channel 30;

[0115] S25, placing the connector between the side wall of the accommodating cavity 11 and the coil 20, and integrating the housing 10, the connector and the coil 20 by a die-casting process.

[0116] In this embodiment, the cooling channel 30 can be directly formed in the connector, which can prevent injuries to personnel caused by acidic liquid or debris.

[0117] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cooling motor, characterized in that: include: A housing (10) having a receiving cavity (11); A coil (20) is disposed in the accommodating cavity (11); A cooling channel (30) is arranged in the shell (10) and is integrally formed with the shell (10); there is no cooling pipe in the cooling channel (30), and cooling water directly contacts the shell (10).

2. The cooling motor according to claim 1, characterized in that: The cooling channel (30) is formed by drilling holes in the shell (10) along a predetermined path, and a plug (40) is provided at one end of the cooling channel (30) that is connected to the outside for sealing.

3. The cooling motor according to claim 2, characterized in that: The cooling channel (30) comprises a first channel (31) and a channel unit (32), wherein the channel unit (32) is configured as a pair, wherein the pair of channel units (32) are symmetrically arranged with a defined axis (L1) as a symmetry axis, wherein the channel unit (32) comprises a second channel (321), a third channel (322), a fourth channel (323) and a fifth channel, wherein one end of the second channel (321) extends toward the accommodating cavity (11), the third channel (322) extends toward the second channel (321) and is in communication with the second channel (321), the fourth channel (323) extends toward the third channel (322) and is in communication with the third channel (322), and the fourth channel (323) intersects with the first channel (31), and one end of the fifth channel extends toward the second channel (321) ) extends and is in communication with the second flow channel (321); both ends of the first flow channel (31), one end of the second flow channel (321) facing away from the accommodating chamber (11), one end of the third flow channel (322) facing away from the second flow channel (321), one end of the fourth flow channel (323) facing away from the third flow channel (322), and one end of the fifth flow channel facing away from the second flow channel (321) are all in communication with the outside of the shell (10); the other end of the fifth flow channel serves as the liquid inlet or the liquid outlet; both ends of the first flow channel (31), one end of the second flow channel (321) facing away from the accommodating chamber (11), one end of the third flow channel (322) facing away from the second flow channel (321), and one end of the fourth flow channel (323) facing away from the third flow channel (322) are all provided with the plug (40).

4. The cooling motor according to claim 1, characterized in that: The shell (10) comprises a first surface and a second surface which are arranged opposite to each other, and both the first surface and the second surface are provided with a heat insulation board.

5. A method for manufacturing a cooling motor, characterized in that: The manufacturing method is applicable to the cooling motor according to any one of claims 1 to 4, comprising: The shell (10) is perforated to form the cooling channel (30), and a plug (40) is provided at one end of the cooling channel (30) that is in communication with the outside for sealing.

6. A method for manufacturing a cooling motor, characterized in that: The manufacturing method is applicable to the cooling motor according to claim 1 or 4, and comprises the following steps: A pre-buried cooling pipe is clamped and fixed in the die-casting cavity of the housing (10); The housing (10), the coil (20) and the cooling tube are die-casted into one piece by a die-casting process; The cooling tube is removed.

7. The method for manufacturing a cooling motor according to claim 6, characterized in that: The removing of the cooling tube includes adding concentrated sulfuric acid to the cooling tube made of metal to dissolve the cooling tube.

8. The method for manufacturing a cooling motor according to claim 6, characterized in that: The removing of the cooling tube includes adding hydrofluoric acid to the cooling tube made of ceramic material to dissolve the cooling tube.

9. The method for manufacturing a cooling motor according to claim 6, characterized in that: The removal of the cooling tube comprises the following steps: Adding water to a cooling tube consisting of a sodium chloride tube and a flexible metal inner core to dissolve the sodium chloride tube; Then take out the flexible metal inner core.

10. The method for manufacturing a cooling motor according to claim 6, characterized in that: The removal of the cooling tube comprises the following steps: Applying pressure to the housing (10), the coil (20) and the cooling tube by means of a pressure device, wherein the die-cast part having a convex shape is integrally die-casted, so that the cooling tube is squeezed and ruptured; Fluid is then injected into the cooling channel (30) to flush and clean the debris.

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