Motor plastic package casing with embedded heat dissipation flow channel and plastic package motor

Abstract

The utility model belongs to the technical field of plastic package motors, and particularly relates to a motor plastic package casing with embedded heat dissipation flow channels and a plastic package motor. In order to overcome the defect of poor heat dissipation effect of the existing plastic package motor with large heat productivity, the utility model adopts the following technical scheme that the motor plastic package casing with the embedded heat dissipation flow channel comprises a thermosetting plastic molding piece, a heat dissipation flow channel and a heat dissipation flow channel, the heat dissipation assembly comprises a heat dissipation flow channel embedded in the cylinder part, a cooling liquid inlet and a cooling liquid outlet, wherein the cooling liquid inlet and the cooling liquid outlet are located in the heat dissipation flow channel. The heat dissipation device has the advantages that the heat dissipation device comprises the thermosetting plastic forming part and the heat dissipation assembly, the heat dissipation assembly comprises the heat dissipation flow channel embedded in the thermosetting plastic forming part, cooling liquid can be input into the heat dissipation flow channel through the cooling liquid inlet, the cooling liquid exchanges heat with the thermosetting plastic forming part in the heat dissipation flow channel, and the heat dissipation effect is improved. And after the motor is cooled, the cooling liquid flows out from the cooling liquid outlet.

Description

TECHNICAL FIELD

[0001] The utility model belongs to plastic -encapsulated motor technical field, concretely relates to the motor plastic -encapsulated machine shell of embedded heat radiation runner and plastic -encapsulated motor. BACKGROUND

[0002] In the motor manufacturing field, the thermosetting plastics such as BMC (Bulk Moulding Compound) are widely used in small household appliance motors due to their excellent electrical properties, cost advantages and the like. The plastic -encapsulated machine shell made of BMC material reduces the cost by more than 60% compared with the commonly used aluminum material machine shell, but the thermal conductivity coefficient of BMC material is poor, less than 1% of aluminum material, so the use of BMC in large heat output motors is limited.

[0003] The common solution for heat dissipation of the existing aluminum machine shell motor is to process heat dissipation runners in the inner and outer shells, and then weld the two shell parts together by friction welding, and through the circulation of liquid medium such as water or oil, the heat generated by the motor is quickly taken away. This method greatly increases the cost of the machine shell due to the complexity of the process manufacturing. At the same time, there is a risk of electric leakage due to the conductivity of the metal shell and the cooling medium.

[0004] The common solution for heat dissipation of the existing plastic -encapsulated motor is air cooling or setting a water cooling structure outside the plastic -encapsulated machine shell. The effect of air cooling is poor and it is difficult to meet the heat dissipation requirements of large heat output. Although the water cooling structure has higher efficiency than air cooling, it is still difficult to meet the requirements of large heat output motors. SUMMARY

[0005] The utility model discloses a plastic -encapsulated motor technical field, concretely relates to the motor plastic -encapsulated machine shell of embedded heat radiation runner and plastic -encapsulated motor.

[0006] To achieve the above object, the utility model adopts the following technical scheme: the motor plastic -encapsulated machine shell of embedded heat radiation runner includes:

[0007] Thermosetting plastic forming piece, including cylindrical portion;

[0008] Heat dissipation assembly, including heat dissipation runner embedded in the cylindrical portion and cooling liquid inlet and cooling liquid outlet on the heat dissipation runner.

[0009] The utility model discloses a motor plastic package machine shell of embedded heat dissipation runner, including thermosetting plastic forming piece and heat dissipation subassembly, heat dissipation subassembly includes the heat dissipation runner of embedding in thermosetting plastic forming piece, can input cooling liquid to heat dissipation runner through cooling liquid import, and cooling liquid exchanges heat with thermosetting plastic forming piece in heat dissipation runner, and the motor is cooled and flows out from cooling liquid export, liquid cooling heat dissipation mode power is bigger, and thus can be applicable to the plastic package motor of big heat output.

[0010] As improvement, the heat dissipation runner is spiral. The spiral heat dissipation runner has better heat dissipation effect than the axial structure.

[0011] As improvement, the center of the cylindrical part and the heat dissipation runner is the motor shaft.

[0012] As improvement, the heat dissipation runner is cylindrical spiral or conical spiral.

[0013] As improvement, the heat dissipation runner is equal-pitch spiral or variable-pitch spiral.

[0014] As improvement, the cooling liquid import of the heat dissipation subassembly has two, and the cooling liquid export is located between the two cooling liquid import axially.

[0015] As improvement, the thermosetting plastic forming piece further includes a radial end cover part, and the radial end cover part forms a front end cover of the motor.

[0016] As improvement, the cooling liquid import and the cooling liquid export each include a joint.

[0017] As improvement, the heat dissipation subassembly has two groups.

[0018] As improvement, the heat dissipation runners of the two groups of heat dissipation subassemblies are parallel.

[0019] As improvement, the cooling liquid imports and the cooling liquid exports of the two groups of heat dissipation subassemblies are located at different ends.

[0020] As improvement, the heat dissipation subassembly further includes a pump, a valve, a liquid storage tank and the like for realizing circulation of the cooling liquid.

[0021] As improvement, the heat dissipation runner includes an axial straight segment and a U-shaped connecting segment (axial structure).

[0022] As improvement, the heat dissipation runner includes a hollow shell, and the cooling liquid circulates along the circumference (annular structure).

[0023] The plastic package motor includes a motor stator and a plastic package shell, and the plastic package shell is the aforementioned motor plastic package shell with embedded heat dissipation runner.

[0024] The plastic package motor is a large heat output plastic package motor.

[0025] As the improvement of the plastic-sealed motor, the lead wire is connected to the motor stator, the lead wire passes through the plastic-sealed casing, the plastic-sealed casing is provided with the lead wire clamp outside, and the plastic-sealed casing is integrated with the motor stator, the heat-dissipating flow channel and the lead wire when being formed.

[0026] As the improvement of the plastic-sealed motor, the thermosetting plastic forming part further comprises an axial fixing part located outside the axial two ends of the motor stator and an inner ring part located inside the motor stator in the radial direction.

[0027] As the improvement of the plastic-sealed motor, the outer surface of the motor stator is formed with a plurality of reinforcing grooves which are uniformly distributed in the circumferential direction and axially through, the reinforcing grooves improve the connection strength between the thermosetting plastic forming part and the motor, and are beneficial to the forming of the thermosetting plastic forming part (improve the flowability in the thermosetting plastic forming process). BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is the cross-sectional view of the plastic-sealed motor of the embodiment one of the utility model.

[0029] Figure 2 is the three-dimensional structure schematic view of the plastic-sealed motor of the embodiment one of the utility model.

[0030] Figure 3 is the three-dimensional structure schematic view of the plastic-sealed motor of the embodiment one of the utility model hidden behind the plastic-sealed casing.

[0031] Figure 4 is the cross-sectional view of the plastic-sealed motor of the embodiment two of the utility model.

[0032] Figure 5 is the structure schematic view of the plastic-sealed motor of the embodiment three of the utility model hidden behind the plastic-sealed casing.

[0033] In the drawing, 01 is the motor plastic-sealed casing, and 02 is the motor stator.

[0034] 1, thermosetting plastic forming part; 11, cylindrical part; 12, axial fixing part; 13, inner ring part; 14, front end cover.

[0035] 2, heat-dissipating assembly; 21, heat-dissipating flow channel; 211, axial straight line segment; 212, U-shaped connecting segment; 22, cooling liquid inlet; 23, cooling liquid outlet.

[0036] 3, lead wire.

[0037] 4, wire clamp.

[0038] 5, reinforcing groove. DETAILED DESCRIPTION

[0039] The technical solutions of the embodiments of the application are explained and described below, but the following embodiments are only preferred embodiments of the application, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the application.

[0040] Referring to Figures 1 to 5 The motor plastic sealing machine shell with embedded heat dissipation flow channel in the embodiment of the utility model, the motor plastic sealing machine shell with embedded heat dissipation flow channel includes:

[0041] The thermosetting plastic forming piece includes a cylindrical portion;

[0042] The heat dissipation assembly includes a heat dissipation flow channel embedded in the cylindrical portion and a cooling liquid inlet and a cooling liquid outlet on the heat dissipation flow channel.

[0043] The motor plastic sealing machine shell with embedded heat dissipation flow channel in the utility model, including thermosetting plastic forming piece and heat dissipation assembly, heat dissipation assembly includes heat dissipation flow channel embedded in thermosetting plastic forming piece, can be through cooling liquid inlet to the heat dissipation flow channel input cooling liquid, cooling liquid in heat dissipation flow channel and thermosetting plastic forming piece heat exchange, after cooling to the motor from cooling liquid outlet. The circulation of the cooling liquid can be realized by a pump.

[0044] Embodiment one

[0045] Referring to Figures 1 to 3 The plastic sealing motor in the first embodiment of the utility model, including motor stator 02 and plastic sealing machine shell, plastic sealing machine shell is the motor plastic sealing machine shell 01 with embedded heat dissipation flow channel 21, the motor plastic sealing machine shell 01 with embedded heat dissipation flow channel 21 includes:

[0046] The thermosetting plastic forming piece 1 includes a cylindrical portion 11;

[0047] The heat dissipation assembly 2 includes a heat dissipation flow channel 21 embedded in the cylindrical portion 11 and a cooling liquid inlet 22 and a cooling liquid outlet 23 on the heat dissipation flow channel 21;

[0048] Among them, the heat dissipation flow channel 21 is spiral.

[0049] In this embodiment, the center of the cylindrical portion 11 and the heat dissipation flow channel 21 is the motor shaft.

[0050] In this embodiment, the heat dissipation flow channel 21 is in the shape of a cylindrical spiral. In other embodiments, the heat dissipation flow channel 21 can also be in the shape of a conical spiral.

[0051] In this embodiment, the heat dissipation flow channel 21 is a spiral with equal pitch. In other embodiments, the heat dissipation flow channel 21 can also be a spiral with variable pitch. According to the temperature difference in the axial direction of the motor, the density of the spiral of the heat dissipation flow channel 21 can be designed and distributed accordingly, so that the heat dissipation flow channel 21 is more at the place with higher temperature.

[0052] In this embodiment, the thermosetting plastic forming part 1 also includes a radial end cover part, which forms the front end cover 14 of the motor, which can simplify the assembly.

[0053] In this embodiment, the cooling liquid inlet 22 and the cooling liquid outlet 23 each include a joint to facilitate connection with other pipelines (such as cooling pipelines or cleaning pipelines). The cooling liquid inlet 22 and the cooling liquid outlet 23 can also be provided with valves to block the heat dissipation flow channel 21 when cooling is not needed.

[0054] In this embodiment, the heat dissipation assembly 2 has only one group. In other embodiments, the heat dissipation assembly 2 can have two groups. In other embodiments, the heat dissipation flow channels 21 of the two groups of heat dissipation assemblies 2 can be parallel. In other embodiments, the cooling liquid inlets 22 and the cooling liquid outlets 23 of the two groups of heat dissipation assemblies 2 can be located at different ends, i.e. the cooling liquid inlet 22 of one group of heat dissipation assemblies 2 is at the left end, the cooling liquid outlet 23 is at the right end, the cooling liquid inlet 22 of the other group of heat dissipation assemblies 2 is at the right end, and the cooling liquid outlet 23 is at the left end.

[0055] In this embodiment, the plastic encapsulation shell is formed integrally with the motor stator 02 and the heat dissipation flow channel 21 when molding.

[0056] In this embodiment, the plastic encapsulation motor is a large heat output plastic encapsulation motor.

[0057] In this embodiment, the motor stator 02 is connected with the lead 3, the lead 3 passes through the plastic encapsulation shell, the plastic encapsulation shell is provided with a lead clamp 4 outside, and the plastic encapsulation shell is integrally formed with the motor stator 02, the heat dissipation flow channel 21 and the lead 3 when molding.

[0058] In this embodiment, the thermosetting plastic forming part 1 also includes an axial fixing part 12 located outside the axial ends of the motor stator 02 and an inner ring part 13 located inside the motor stator 02 in the radial direction.

[0059] In this embodiment, the outer surface of the motor stator 02 forms a plurality of circumferentially distributed and axially penetrating reinforcing grooves 5, which improve the connection strength between the thermosetting plastic forming part 1 and the motor, and are also beneficial to the molding of the thermosetting plastic forming part 1 (improve the flowability in the thermosetting plastic forming process).

[0060] In this embodiment, the axial dimension of the heat dissipation flow channel 21 is comparable to the axial dimension of the motor stator 02.

[0061] In the embodiment, the heat dissipation assembly 2 further comprises a circulating pump, a flow valve, a liquid storage tank and the like for realizing circulation of the cooling liquid.

[0062] In the embodiment, the plastic-sealed motor further comprises a controller and a temperature detecting sensor (such as a thermistor), and the heat dissipation assembly 2 controls start and stop of the circulating pump, power of the circulating pump, opening and closing of the flow valve and flow of the flow valve according to the detected temperature.

[0063] In the embodiment, the thermosetting plastic forming piece adopts BMC.

[0064] The plastic-sealed motor of the embodiment one has the following beneficial effects: the plastic-sealed motor shell comprises the thermosetting plastic forming piece 1 and the heat dissipation assembly 2, the heat dissipation assembly 2 comprises the heat dissipation flow channel 21 embedded in the thermosetting plastic forming piece 1, the heat dissipation flow channel 21 is in a spiral shape, the cooling liquid can be input into the heat dissipation flow channel 21 through the cooling liquid inlet 22, the cooling liquid exchanges heat with the thermosetting plastic forming piece 1 in the spiral heat dissipation flow channel 21, and the cooling liquid flows out from the cooling liquid outlet 23 after cooling the motor.

[0065] Embodiment two

[0066] Referring to Figure 4 , the plastic-sealed motor of the embodiment two is different from the plastic-sealed motor of the embodiment one in that the plastic-sealed motor shell does not form the front end cover 14 of the motor.

[0067] The utility model discloses an embedded heat dissipation flow channel 21's motor plastic-sealed motor shell 01, embedded heat dissipation flow channel 21's motor plastic-sealed motor shell 01 includes:

[0068] Thermosetting plastic forming piece 1, including cylindrical portion 11;

[0069] Heat dissipation assembly 2, including the heat dissipation flow channel 21 embedded in cylindrical portion 11 and the cooling liquid inlet 22 and cooling liquid outlet 23 on heat dissipation flow channel 21;

[0070] Wherein, heat dissipation flow channel 21 is in a spiral shape.

[0071] Embodiment three

[0072] Referring to Figure 5 , the plastic-sealed motor of the embodiment three is different from the plastic-sealed motor of the embodiment one in that the shape of the heat dissipation flow channel 21.

[0073] In the embodiment, the heat dissipation flow channel 21 comprises a plurality of axial linear segments 211 and a plurality of U-shaped connecting segments 212, the cooling liquid inlet 22 and the cooling liquid outlet 23 are located at two ends of the heat dissipation flow channel and also at two ends of the axial direction of the plastic-sealed motor, and the cooling liquid inlet 22 and the cooling liquid outlet 23 are circumferentially adjacent.

[0074] In other embodiments, the heat dissipation flow channel can also be hollow shell-shaped, with the cooling liquid flowing mainly along the circumferential flow channel, circumferentially adjacent between the cooling liquid inlet and the cooling liquid outlet.

[0075] The above description is merely that of specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. It should be understood by those skilled in the art that the present application includes but is not limited to the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present application will be included in the scope of protection of the claims.

Claims

1. A motor plastic package case with embedded heat dissipation flow channel, characterized in that: The motor plastic sealing machine shell with the embedded heat dissipation flow channel comprises: a thermosetting plastic forming part (1) comprising a cylindrical part (11); a heat dissipation assembly (2) comprising a heat dissipation flow channel (21) embedded in the cylindrical part (11) and a cooling liquid inlet (22) and a cooling liquid outlet (23) located on the heat dissipation flow channel (21); wherein the thermosetting plastic forming part (1) further comprises an axial fixing part (12) located outside the axial two ends of the motor stator (02) and an inner ring part (13) located radially inside the motor stator (02).

2. The motor plastic package with embedded heat dissipation flow channel according to claim 1, characterized in that: The heat dissipation flow channel (21) is in a spiral shape.

3. The motor plastic package with embedded heat dissipation flow channel according to claim 2, characterized in that: The center of the cylindrical part (11) and the heat dissipation flow channel (21) is the motor shaft center.

4. The motor plastic package with embedded heat dissipation flow channel according to claim 2, characterized in that: The heat dissipation flow channel (21) is in a cylindrical spiral shape or a conical spiral shape; and / or, The heat dissipation flow channel (21) is in an equal pitch spiral shape or a variable pitch spiral shape.

5. The motor plastic package with embedded heat dissipation flow channel according to claim 2, characterized in that: The cooling liquid inlet (22) of the heat dissipation assembly (2) has two, and the cooling liquid outlet (23) is located between the two cooling liquid inlets (22) axially.

6. The motor plastic package with embedded heat dissipation flow channel according to claim 1, characterized in that: The heat dissipation flow channel (21) comprises an axial straight section (211) and a U-shaped connecting section (212), Alternatively, the heat dissipation flow channel (21) comprises a hollow shell, and the cooling liquid circulates along the circumference.

7. The motor plastic package with embedded heat dissipation flow channel according to claim 1, characterized in that: The thermosetting plastic forming part (1) further comprises a radial end cover part forming a front end cover (14) of the motor; and / or, The thermosetting plastic forming part (1) uses a mass molding plastic.

8. A plastic encapsulated motor comprising a motor stator (02) and a plastic encapsulated housing, characterized in that: The plastic sealing machine shell is the motor plastic sealing machine shell with the embedded heat dissipation flow channel according to any one of claims 1 to 7, and the plastic sealing machine shell is integrated with the motor stator (02) and the heat dissipation flow channel (21) during molding.

9. The plastic encapsulated motor of claim 8, wherein: The motor stator (02) is connected with a lead wire (3), the lead wire (3) passes through the plastic sealing machine shell, an outgoing line clamp (4) is arranged outside the plastic sealing machine shell, and the plastic sealing machine shell is integrated with the motor stator (02), the heat dissipation flow channel (21) and the lead wire (3) during molding; and / or, The plastic sealed motor is a large heat output plastic sealed motor.

10. The plastic encapsulated motor of claim 8, wherein: The outer surface of the motor stator (02) forms a plurality of reinforcing grooves (5) uniformly distributed in the circumference and axially penetrating.

Images