Composite rotor direct current motor with high heat dissipation

Abstract

The utility model discloses a high heat dissipation composite rotor direct current motor, which comprises a composite rotor and a shell, and is characterized in that the composite rotor comprises a rotor shaft and a plurality of permanent magnets circumferentially arranged on the rotor shaft; a heat dissipation area is arranged between every two adjacent permanent magnets. The heat dissipation area is in a spiral shape in the length direction of the axis of the rotor shaft. The shell is provided with heat dissipation holes, and one end, extending out of the shell, of the rotor shaft is provided with fan blades. When the rotor shaft rotates, the spiral heat dissipation area can drive air to flow, the composite rotor dissipates heat, the fan blades can also rotate synchronously, a low-pressure area can be formed between the fan blades and the heat dissipation area, and therefore air flow can further flow in the heat dissipation area quickly and flow towards the fan blades through heat dissipation holes, and the heat dissipation efficiency is improved. And the air velocity is improved, so that the composite rotor is further cooled.

Description

Technical Field

[0001] The present application relates to the field of motors, and in particular to a high-heat-dissipating composite rotor DC motor. Background Art

[0002] A DC motor is a rotating motor that can convert DC electrical energy into mechanical energy or vice versa. It is a motor that can realize the mutual conversion between DC electrical energy and mechanical energy. When it operates as a motor, it is a DC motor that converts electrical energy into mechanical energy; when it operates as a generator, it is a DC generator that converts mechanical energy into electrical energy. Existing DC motors, taking the compound rotor DC motor as an example, are widely used in home appliances and other fields because of their fast response, large starting torque, and the ability to maintain stable speed and torque at low speeds.

[0003] However, the motor will emit a lot of heat inside during use, so a cooling fan is needed to dissipate the heat. However, the cooling effect of the cooling fan is average. When the motor is used for a long time in high temperature weather, the heat is difficult to dissipate, which affects the service life and causes damage. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a high heat dissipation composite rotor DC motor. A heat sink is provided on the surface of the motor so that when the temperature is too high, the heat can be dissipated by liquid cooling.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] A high-heat-dissipation composite rotor DC motor comprises a composite rotor and a housing. The composite rotor comprises a rotor shaft and a plurality of permanent magnets circumferentially arranged on the rotor shaft. A heat dissipation zone is provided between adjacent permanent magnets. The heat dissipation zone is spirally shaped along the axial length direction of the rotor shaft. The housing has heat dissipation holes, and a fan is provided at one end of the rotor shaft extending out of the housing.

[0007] Preferably, a fin group is fixed on the shell, and a first cooling plate is provided on the shell. One end of the first cooling plate is connected to a water pipe, and the other end is connected to a first water outlet pipe. The first cooling plate has a cavity for accommodating the fin group, and the water pipe and the first water outlet pipe are both connected to the cavity.

[0008] Preferably, the shell is further provided with a plurality of second cooling plates with cavities therein, one end of the second cooling plate is connected to the second water outlet pipe, and the other end is connected to a connecting hose, and the connecting hose can be communicated with the first water outlet pipe.

[0009] Preferably, it further comprises a water bucket with a built-in water pump, and one end of the water pipe is connected to the water pump in the water bucket.

[0010] Preferably, a sealing strip is provided between the fin group and the first cooling plate.

[0011] Preferably, the first cooling plate and the second cooling plate are detachably connected to the housing by screws.

[0012] Preferably, a pick-up end extends from an edge of the first cooling plate.

[0013] Preferably, the housing is provided with a lifting handle.

[0014] Preferably, the lifting handle is detachably connected to the shell, the lifting handle has an elastic portion, the elastic portion is provided with a protrusion, the shell is fixed with a fixing block, the fixing block is provided with a socket, and the protrusion is located in the socket.

[0015] Preferably, the fixing block is located between the first cooling plate and the second cooling plate.

[0016] In summary, the present invention has the following beneficial technical effects:

[0017] 1. When the rotor shaft rotates, the spiral heat dissipation area can drive the air flow, the composite rotor dissipates heat, and the fan blades will also rotate synchronously, forming a low-pressure area between the fan blades and the heat dissipation area, thereby further allowing the air flow to flow quickly in the heat dissipation area and flow toward the fan blades through the heat dissipation holes, thereby increasing the air flow rate and achieving further heat dissipation of the composite rotor.

[0018] 2. The fin group itself can give the motor a certain heat dissipation effect. When the temperature is overheated and further heat dissipation is needed, just install the first cooling plate to the shell, and then pass water through the first cooling plate to achieve liquid cooling of the fin group, thereby improving the overall heat dissipation effect of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the motor in the present utility model.

[0020] Figure 2 It is a structural schematic diagram of the composite rotor in the utility model.

[0021] Figure 3 It is a structural schematic diagram of the first cooling plate in the utility model.

[0022] Figure 4 It is a structural schematic diagram of the first cooling plate and the second cooling plate in the present invention.

[0023] Figure 5 yes Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0024] Figure 6It is a schematic diagram of the overall structure of the motor and the water bucket in the utility model.

[0025] Explanation of the accompanying drawings: 1. Shell; 11. Composite rotor; 111. Rotor shaft; 112. Permanent magnet; 113. Heat dissipation area; 114. Fan blade; 2. First cooling plate; 21. Water pipe; 22. First water outlet pipe; 23. Screw; 24. Sealing strip; 3. Second cooling plate; 31. Connecting hose; 32. Second water outlet pipe; 4. Pick-up end; 5. Bucket; 6. Lifting handle; 61. Elastic part; 62. Fixing block; 63. Protrusion; 64. Socket. DETAILED DESCRIPTION

[0026] The terms "up," "down," "left," "right," "front," "back," "front," "back," "top," and "bottom" mentioned or potentially mentioned in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may vary depending on their location or usage. Therefore, these or other directional terms should not be interpreted as restrictive. In addition, the terms "first," "second," "third," and similar expressions are used only for descriptive and distinguishing purposes and should not be understood to indicate or imply the relative importance of the corresponding components.

[0027] The following is combined with Figure 1 -Attached Figure 6 This application is described in further detail.

[0028] The embodiments of the present application disclose a composite rotor DC motor with high heat dissipation.

[0029] Reference Figure 1 A high heat dissipation composite rotor DC motor includes a housing 1 and a composite rotor 11 rotatably disposed in the housing 1.

[0030] Reference Figure 1 and Figure 2The composite rotor 11 includes a rotor shaft 111 and a plurality of permanent magnets 112. The plurality of permanent magnets 112 are circumferentially arranged along the axis of the rotor shaft 111. A gap exists between adjacent permanent magnets 112, which serves as a heat dissipation zone 113. The heat dissipation zone 113 is spirally shaped along the length of the axis of the rotor shaft 111, and in this application, is a quarter spiral. As the rotor shaft 111 rotates, airflow can flow along the spiral heat dissipation zone 113, thereby achieving a heat dissipation effect. Both ends of the rotor shaft 111 extend from the housing 1, one end of which is an output shaft for driving a carrier to rotate. The carrier can be a wheel, a roller, or a shaft. The carrier is not protected by this application and is prior art, so it will not be described in detail. The end of the rotor shaft 111 away from the output shaft is provided with a fan blade 114, and the housing 1 has a heat dissipation hole. The heat dissipation hole allows airflow outside the housing 1 to enter the heat dissipation zone 113 of the composite rotor 11 within the housing 1. Similarly, the airflow within the heat dissipation zone 113 can also flow out of the housing 1 through the heat dissipation hole. As the rotor shaft 111 rotates, the fan blades 114 also rotate, forming a low-pressure area between the fan blades 114 and the heat dissipation area 113, thereby further allowing the air flow to flow quickly from the heat dissipation area 113 and flow toward the fan blades 114 through the heat dissipation holes. The heat dissipation holes are not shown in the figure.

[0031] Reference Figure 1 and Figure 3 A fin group is fixed on the shell 1. In this application, there are four fin groups. When excessive heat dissipation is not required, the four fin groups can dissipate heat for the motor.

[0032] When heat dissipation from housing 1 needs to be improved, a first cooling plate 2 is installed on housing 1. First cooling plate 2 is connected to housing 1 via screws 23 and is located within one of the fin groups. In this application, first cooling plate 2 is located within the topmost fin group. A cavity is defined between first cooling plate 2 and housing 1, providing a certain amount of space between the fin group and first cooling plate 2.

[0033] Reference Figure 3 One end of the first cooling plate 2 is fixedly connected to a water pipe 21, and the other end is fixedly connected to a first water outlet pipe 22. Both the water pipe 21 and the first water outlet pipe 22 are connected to the cavity. A water bucket 5 (such as Figure 6 A water pump is installed within the water bucket 5. A water delivery pipe 21 is connected to the pump's output. The pump's input draws water from the bucket 5 and pumps it into the cavity of the first cooling plate 2. After heat exchange with the fin assembly, the water exits through the first water outlet pipe 22. To circulate the water, the first water outlet pipe 22 can also be extended and placed within the water bucket 5.

[0034] If water circulation is not intended, the water pipe 21 can also be directly connected to the faucet. Allowing the water flow with a lower temperature to continuously cool the fin group in the first cooling plate 2, thereby achieving heat dissipation for the motor.

[0035] The ends of the fins in the fin assembly pass through the first cooling plate 2 and extend externally, allowing part of the fin to reside within the cavity of the first cooling plate 2 and the remainder to protrude outside the first cooling plate 2, achieving both liquid and air cooling. Furthermore, for the fins within the cavity, adjacent fins have only one flow channel, and the channels between multiple fins are not interconnected. This allows water to flow between adjacent fins, thereby improving heat exchange.

[0036] In order to prevent water in the first cooling plate 2 from flowing out from the fins, a sealing strip 24 is provided at the position between the fins of the fin group and the cooling plate.

[0037] Two edges of the first cooling plate 2 are extended with pick-up ends 4 , which facilitate workers to pick up the first cooling plate 2 when the first cooling plate 2 is installed or disassembled.

[0038] Reference Figure 4 When it is necessary to further improve the heat dissipation of the shell 1, a second cooling plate 3 is set on the shell 1. In this application, there are two second cooling plates 3, which are respectively arranged on both sides of the first cooling plate 2. Taking one of the second cooling plates 3 as an example, the second cooling plate 3 also has a cavity and a picking portion, and the fin group will also pass through the second cooling plate 3. A sealing strip 24 is also provided at the position where the second cooling plate 3 is connected to the fin group. The second cooling plate 3 is also detachably connected to the shell 1 by screws 23.

[0039] One end of the second cooling plate 3 is connected to the second water outlet pipe 32, and the other end is connected to the connecting hose 31. The connecting hose 31 can be connected to the first water outlet pipe 22. At this time, the water flows through the cavity of the first cooling plate 2 and enters the cavity of the second cooling plate 3, and then comes out from the second water outlet pipe 32.

[0040] Since there are two second cooling plates 3 , two first water outlet pipes 22 are also provided in the present application. The two first water outlet pipes 22 are respectively connected to the connecting hoses 31 of the two second cooling plates.

[0041] After installing the first cooling plate 2 and the second cooling plate 3, if water circulation is required, first fill the water bucket 5 with water, then place the water supply pipe 21 with a water pump into the water bucket 5, and then place the second water outlet pipe 32 into the water bucket 5. The water flows through the water supply pipe 21, the first cooling plate 2, the first water outlet pipe 22, the connecting hose 31, the second cooling plate 3, and then out of the second water outlet pipe 32 and into the water bucket 5.

[0042] Of course, after the second cooling plate 3 is provided, the water pipe 21 may also be directly connected to the faucet.

[0043] Reference Figure 5 and Figure 6 The housing 1 is provided with a lifting handle 6 for convenient transportation of the motor. The lifting handle 6 is detachably connected to the housing 1. After the lifting handle 6 is removed from the housing 1, the first cooling plate 2 and the second cooling plate 3 can be conveniently installed on the housing 1.

[0044] The housing 1 is secured with a fixing block 62, positioned between the first and second cooling plates 2 and 3. The fixing block 62 and the fin assembly serve as guides, facilitating the positioning of the first and second cooling plates 2 and 3. The fixing block 62 also defines a socket 64. The lifting handle 6 includes an elastic portion 61, which is provided with a protrusion 63 that fits within the socket 64 and can be inserted into the socket 64 under the action of the elastic portion 61. To remove the lifting handle from the housing 1, simply press the elastic portion 61 to release the protrusion 63 from the socket 64.

[0045] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application; therefore, according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation methods. Therefore, the above specific implementation methods and drawings are only illustrative descriptions of the technical solution of the present invention, and should not be regarded as the entirety of the present invention or as a limitation or restriction on the technical solution of the present invention. Therefore: All equivalent changes made in accordance with the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A high heat dissipation composite rotor DC motor, comprising a composite rotor (11) and a housing (1), characterized in that: The composite rotor (11) comprises a rotor shaft (111) and a plurality of permanent magnets (112) circumferentially arranged on the rotor shaft (111); a heat dissipation zone (113) is provided between adjacent permanent magnets (112); the heat dissipation zone (113) is spirally shaped along the axial length direction of the rotor shaft (111); the housing (1) has heat dissipation holes, and a fan blade (114) is provided at one end of the rotor shaft (111) extending out of the housing (1).

2. A high heat dissipation composite rotor DC motor according to claim 1, characterized in that: A fin group is fixed on the shell (1), and a first cooling plate (2) is provided on the shell (1). One end of the first cooling plate (2) is connected to a water supply pipe (21), and the other end is connected to a first water outlet pipe (22). The first cooling plate (2) has a cavity for accommodating the fin group, and the water supply pipe (21) and the first water outlet pipe (22) are both connected to the cavity.

3. The high heat dissipation composite rotor DC motor according to claim 2, characterized in that: The shell (1) is further provided with a plurality of second cooling plates (3) having cavities therein, one end of each second cooling plate (3) being connected to a second water outlet pipe (32), and the other end being connected to a connecting hose (31), wherein the connecting hose (31) is capable of communicating with the first water outlet pipe (22).

4. A high heat dissipation composite rotor DC motor according to claim 3, characterized in that: It comprises a water bucket (5) with a built-in water pump, wherein one end of the water delivery pipe (21) is connected to the water pump in the water bucket (5).

5. The high heat dissipation composite rotor DC motor according to claim 4, characterized in that: A sealing strip (24) is provided between the fin group and the first cooling plate (2).

6. The high heat dissipation composite rotor DC motor according to claim 3, characterized in that: The first cooling plate (2) and the second cooling plate (3) are detachably connected to the housing (1) via screws (23).

7. A high heat dissipation composite rotor DC motor according to claim 6, characterized in that: A pick-up end (4) extends from the edge of the first cooling plate (2).

8. The high heat dissipation composite rotor DC motor according to claim 7, characterized in that: The housing (1) is provided with a lifting handle (6).

9. The high heat dissipation composite rotor DC motor according to claim 8, characterized in that: The lifting handle (6) is detachably connected to the shell (1), and the lifting handle (6) has an elastic portion (61), and the elastic portion (61) is provided with a protrusion (63). The shell (1) is fixed with a fixing block (62), and the fixing block (62) is provided with a socket (64), and the protrusion (63) is located in the socket (64).

10. The high heat dissipation composite rotor DC motor according to claim 9, characterized in that: The fixing block (62) is located between the first cooling plate (2) and the second cooling plate (3).

Images