Cooling structure of mid-mounted motor
By designing the cooling structure of the mid-mounted motor in the automotive air conditioning system, and introducing external airflow into the airflow channel for cooling, the problem of poor cooling effect of the dual-out shaft motor is solved, improving the use effect and extending the service life.
Patent Information
- Application Number
- CN202421531717.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The cooling effect of the double-out shaft motor in the automotive air conditioning system is poor, resulting in heat generation after long-term use, reduced use effect, and negatively affecting the service life.
A cooling structure of a mid-mounted motor is designed, including a mounting base, a dual-out shaft motor and two impellers. An airflow channel is set on the mounting base, and the external airflow enters the interior of the dual-out shaft motor through the airflow channel to achieve heat dissipation and cooling.
Through this cooling structure, negative pressure is formed inside the dual-out shaft motor, and external airflow naturally enters, achieving effective heat dissipation and cooling of the internal components, improving the use effect and extending the service life.
Smart Images
Figure CN222750283U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of automobile air conditioning systems, and in particular to a cooling structure of a mid-mounted motor. Background Art
[0002] With the increasing development of the automobile industry, people's demand for driving and riding comfort is also increasing. Therefore, driven by demand, car air conditioners are also common in the automobile industry and have gradually become an important part of the automobile structure.
[0003] For automobile air conditioners, it includes a box body and a blower mechanism disposed in the box body. The blower mechanism usually adopts a central motor structure, so that the blower mechanism includes a double-shaft motor and two impellers, and the two impellers are respectively installed on the output shafts at both ends of the double-shaft motor. When in use, the double-shaft motor controls the rotation of the two impellers at the same time, thereby forming a double air duct in the box body to transport external air / internal air respectively, thereby reducing the energy consumption of new energy vehicles under heating conditions.
[0004] However, in actual use, the cooling effect of the double-shaft motor is poor, so that after long-term use, the double-shaft motor is prone to heat up, resulting in reduced use effect, which in turn has a great negative impact on the service life of the double-shaft motor. Utility Model Content
[0005] In order to achieve a better cooling effect on a dual-shaft motor, thereby improving the use effect of the dual-shaft motor and extending its service life, the present application provides a cooling structure for a mid-mounted motor.
[0006] The cooling structure of a mid-mounted motor provided in the present application adopts the following technical solution:
[0007] A cooling structure for a mid-mounted motor comprises a mounting seat, a double-shaft motor and two impellers, wherein the double-shaft motor is mounted on the mounting seat, and the two impellers are respectively mounted on output shafts at both ends of the double-shaft motor; an air flow channel is provided on the mounting seat, and the air flow channel is used for allowing the external air flow of the double-shaft motor to enter the interior of the double-shaft motor and then be discharged from the interior of the double-shaft motor.
[0008] By adopting the above technical solution, when the double-shaft motor drives the impeller to rotate to ensure the normal operation of the automobile air conditioner, airflow will be formed on the inside of the double-shaft motor and the internal area of the double-shaft motor will be in a negative pressure state, so that the external airflow can naturally enter the double-shaft motor from the air flow channel, thereby achieving the purpose of heat dissipation and cooling of the internal components of the double-shaft motor, and the cooling effect is better, thereby improving the use effect of the double-shaft motor and extending its service life.
[0009] Optionally, the air flow channel includes a return air channel and an outlet air channel, the return air channel is arranged on the mounting seat and is used to allow external air flow to enter the dual-shaft motor, and the outlet air channel is arranged on the impeller below the dual-shaft motor and is used to output the air flow in the dual-shaft motor to the outside.
[0010] By adopting the above technical solution, after the blower starts working, the impeller rotates, generating negative pressure in the space between the two impellers and the double-shaft motor, and generating positive pressure below the flow path of the blower. The external airflow can enter the double-shaft motor from the return air channel under the action of the pressure difference, and after dissipating the heat of the double-shaft motor, it flows out from the air outlet channel, thereby generating a stable cooling airflow inside the double-shaft motor and cooling the double-shaft motor.
[0011] Optionally, a plurality of induced draft blades are fixed to a side of the impeller facing the dual-shaft motor, and the plurality of induced draft blades are distributed in a circular array around the axis of the impeller.
[0012] By adopting the above technical solution, during the operation of the impeller, the multiple draft blades on the impeller will also rotate synchronously, thereby enhancing the flow effect of the airflow inside the dual-shaft motor and improving the cooling effect of the internal components of the dual-shaft motor.
[0013] Optionally, the mounting base includes a first shell, a second shell and a mounting bracket, the dual-shaft motor is detachably connected to the mounting bracket, the first shell is detachably connected to the second shell, the mounting bracket is clamped between the first shell and the second shell, and the air flow channel runs through the first shell, the second shell and / or the mounting bracket.
[0014] By adopting the above technical solution, during installation, it is only necessary to install the dual-shaft motor on the mounting bracket, and then connect the mounting bracket, the first shell and the second shell to each other, thereby achieving a more convenient installation process of the dual-shaft motor.
[0015] Optionally, the mounting bracket is formed with a plurality of connecting ear plates, the connecting ear plates are detachably connected to a connecting pipe, the mounting seat is provided with a plurality of connecting bolts, the connecting bolts fasten the first shell and the second shell, and the connecting bolts are also passed through the connecting pipe.
[0016] By adopting the above technical solution, when the mounting bracket is connected to the first shell or the second shell, it is only necessary to pass the connecting bolts through the connecting pipe, thereby further improving the convenience of the installation process while ensuring the stability of the installation.
[0017] Optionally, the connecting ear plate is provided with a mounting groove, the outer wall of the connecting pipe is provided with a clamping ring groove coaxial with the connecting pipe, the connecting pipe is clamped in the mounting groove, and the connecting ear plate is inserted into the clamping ring groove.
[0018] By adopting the above technical solution, when installing the connecting pipe, it is only necessary to clamp the connecting pipe into the installation groove, so that the installation process of the connecting pipe is more convenient and it is easy to install and replace the connecting pipe.
[0019] Optionally, the mounting bracket partially wraps the dual-shaft motor, and a plurality of support bars are formed on the inner wall of the mounting bracket, and the dual-shaft motor abuts against the support bars.
[0020] By adopting the above technical solution, the mounting bracket has a better protective effect on the dual-shaft motor, and while ensuring the stability of the installation of the dual-shaft motor, the support bar can also create a certain gap between the mounting bracket and the dual-shaft motor, thereby facilitating the circulation of airflow during the subsequent cooling process and optimizing the cooling effect of the dual-shaft motor.
[0021] Optionally, a wire threading channel is provided on the mounting seat, and the wire threading channel is used for allowing the lead wires of the dual-output shaft motor to pass through.
[0022] By adopting the above technical solution, the threading channel provides a threading space for the leads of the double-output shaft motor, thereby improving the convenience of threading the leads of the double-output shaft motor.
[0023] In summary, the present application includes at least one of the following beneficial technical effects:
[0024] 1. When the double-shaft motor drives the impeller to rotate to make the car air conditioner operate normally, the external airflow can naturally enter the double-shaft motor from the airflow channel to achieve the purpose of heat dissipation and cooling of the internal components of the double-shaft motor. The cooling effect is better, which improves the use effect of the double-shaft motor and prolongs its service life;
[0025] 2. During the operation of the impeller, the multiple draft blades on the impeller will also rotate synchronously, thereby enhancing the flow effect of the airflow inside the double-shaft motor and improving the cooling effect of the internal components of the double-shaft motor. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic diagram of the installation structure of a cooling structure of a mid-mounted motor in an embodiment of the present application;
[0027] Figure 2 is a cross-sectional view of a cooling structure of a mid-mounted motor according to an embodiment of the present application;
[0028] Figure 3 It is a schematic diagram of an exploded structure of a cooling structure of a mid-mounted motor according to an embodiment of the present application;
[0029] Figure 4 It is a schematic diagram of the partial explosion structure of the mounting bracket according to the embodiment of the present application.
[0030] Explanation of the reference numerals: 1. Mounting seat; 11. First shell; 12. Second shell; 13. Mounting bracket; 131. Connecting ear plate; 1311. Mounting groove; 132. Connecting pipe; 1321. Snap ring groove; 133. Support bar; 14. Connecting bolt; 2. Double-shaft motor; 21. Ventilation hole; 3. Impeller; 31. Draft blade; 4. Air flow channel; 41. Return air channel; 42. Air outlet channel; 5. Threading channel. DETAILED DESCRIPTION
[0031] The following is combined with Figure 1-4 This application is described in further detail.
[0032] The present application embodiment discloses a cooling structure for a mid-mounted motor. Figure 1 and Figure 2 The cooling structure of the mid-mounted motor includes a mounting base 1, a double-shaft motor 2 and two impellers 3. The mounting base 1 includes a first housing 11, a second housing 12 and a mounting bracket 13. The mounting bracket 13 is a cover-shaped structure. The double-shaft motor 2 is inserted into the mounting bracket 13 and fixed to the mounting bracket 13 by screws, so that the double-shaft motor 2 can be detachably mounted on the mounting bracket 13. The first housing 11 and the second housing 12 are both set as annular structures. The first housing 11 is detachably connected to the second housing 12 and the two are coaxially arranged. The mounting bracket 13 is connected to the first housing 11 and the second housing 12 at the same time.
[0033] The two impellers 3 are respectively fixed on the output shafts at both ends of the double-output shaft motor 2.
[0034] Reference Figure 1 and Figure 2 An air flow channel 4 is provided on the mounting base 1, and the air flow channel 4 is used for the air flow outside the double-shaft motor 2 to enter the double-shaft motor 2 and then be discharged from the double-shaft motor 2. The air flow channel 4 includes a return air channel 41 and an outlet air channel 42. The return air channel 41 runs through the side walls of the first shell 11, the second shell 12 and the mounting bracket 13, and is connected to the side of the double-shaft motor 2. The outlet air channel 42 is opened on the impeller 3 below the double-shaft motor 2 and is connected to the inside of the double-shaft motor 2.
[0035] After the blower starts working, the double-shaft motor 2 drives the impeller 3 to rotate to make the car air conditioner operate normally. During this process, airflow will also be formed on the mounting base 1 and the inner side of the double-shaft motor 2, and the internal area of the double-shaft motor 2 will be in a negative pressure state, and a positive pressure will be generated below the flow path of the blower. The external airflow can enter the double-shaft motor 2 from the return air channel 41 under the action of the pressure difference, and then flow out from the air outlet channel 42 after dissipating the heat of the double-shaft motor 2, so that a stable cooling airflow is generated inside the double-shaft motor 2, thereby achieving the purpose of dissipating heat and cooling the internal components of the double-shaft motor 2, and the cooling effect is better, thereby improving the use effect of the double-shaft motor 2 and extending its service life.
[0036] Reference Figure 1 , Figure 2 The mounting seat 1 is connected with a threading channel 5, which is used for passing the lead wires of the double-output shaft motor 2. The threading channel 5 provides a threading space for the lead wires of the double-output shaft motor 2, thereby improving the convenience of passing the lead wires of the double-output shaft motor 2.
[0037] Reference Figure 2 A plurality of induced draft blades 31 are fixed to the side of the impeller 3 facing the double-shaft motor 2, and the plurality of induced draft blades 31 are arranged in a circular array around the axis of the impeller 3. When the double-shaft motor 2 drives the impeller 3 to work normally, the plurality of induced draft blades 31 on the impeller 3 will also rotate synchronously, further enhancing the flow effect of the airflow inside the double-shaft motor 2 and improving the cooling effect of the internal components of the double-shaft motor 2.
[0038] Reference Figure 3 and Figure 4 The outer wall of the mounting bracket 13 is formed with a plurality of connecting ear plates 131, which are distributed around the mounting bracket 13, and the connecting ear plates 131 are provided with mounting grooves 1311. The connecting ear plates 131 are provided with connecting pipes 132, and the outer wall of the connecting pipes 132 is provided with a snap ring groove 1321 coaxial with the connecting pipes 132. The connecting pipes 132 are snapped into the mounting grooves 1311, and the connecting ear plates 131 are inserted into the snap ring grooves 1321, thereby realizing the detachable installation of the connecting pipes 132 on the connecting ear plates 131. The connecting ear plates 131 and the connecting pipes 132 are clamped between the first housing 11 and the second housing 12.
[0039] The mounting base 1 is provided with a plurality of connecting bolts 14 , and the connecting bolts 14 are simultaneously passed through the first housing 11 , the second housing 12 and the connecting pipe 132 .
[0040] During installation, it is only necessary to first fix the double-shaft motor 2 in the mounting bracket 13, then clamp the connecting pipe 132 to the connecting ear plate 131, and then sleeve the first housing 11 and the second housing 12 on the mounting bracket 13, and the connecting pipe 132 is clamped between the first housing 11 and the second housing 12, and finally tighten a plurality of connecting bolts 14. Thus, the double-shaft motor 2 can be detachably installed, and the installation stability of the double-shaft motor 2 is better. At the same time, the mounting bracket 13 has a better protective effect on the double-shaft motor 2, and the safety of the installation process and the use process is improved.
[0041] Reference Figure 4 The inner wall of the mounting bracket 13 is formed with a plurality of support bars 133, so that when the dual-shaft motor 2 is fixed to the mounting bracket 13 from the inside of the mounting bracket 13, the dual-shaft motor 2 can abut against the support bars 133. Thus, while ensuring the stability of the installation of the dual-shaft motor 2, there is also a certain gap between the mounting bracket 13 and the dual-shaft motor 2, so as to facilitate the flow of air in the subsequent cooling process and optimize the cooling effect of the dual-shaft motor 2.
[0042] The implementation principle of the cooling structure of a mid-mounted motor in an embodiment of the present application is as follows: when the double-shaft motor 2 drives the impeller 3 to rotate to ensure the normal operation of the automobile air conditioner, an airflow will be formed on the inside of the double-shaft motor 2 and the internal area of the double-shaft motor 2 will be in a negative pressure state, and a positive pressure will be generated below the flow path of the blower. The external airflow can enter the double-shaft motor 2 from the return air channel 41 under the action of the pressure difference, and then flow out from the air outlet channel 42 after dissipating the heat of the double-shaft motor 2. Then, the external airflow can naturally enter the interior of the double-shaft motor 2 from the air flow channel 4, thereby achieving the purpose of dissipating heat and cooling the internal components of the double-shaft motor 2, and the cooling effect is better, thereby improving the use effect of the double-shaft motor 2 and extending its service life.
[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A cooling structure for a mid-mounted motor, characterized in that: The invention comprises a mounting seat (1), a double-shaft motor (2) and two impellers (3), wherein the double-shaft motor (2) is mounted on the mounting seat (1), and the two impellers (3) are respectively mounted on the output shafts at both ends of the double-shaft motor (2); an air flow channel (4) is provided on the mounting seat (1), and the air flow channel (4) is used for allowing the air flow outside the double-shaft motor (2) to enter the double-shaft motor (2) and then be discharged from the double-shaft motor (2).
2. The cooling structure of the mid-mounted motor according to claim 1, characterized in that: The air flow channel (4) comprises a return air channel (41) and an outlet air channel (42); the return air channel (41) is arranged on the mounting seat (1) and is used for allowing external air flow to enter the double-shaft motor (2); the outlet air channel (42) is arranged on the impeller (3) below the double-shaft motor (2) and is used for allowing the air flow in the double-shaft motor (2) to be output to the outside.
3. The cooling structure of the mid-mounted motor according to claim 1, characterized in that: A plurality of air-inducing blades (31) are fixed to a side of the impeller (3) facing the dual-shaft motor (2), and the plurality of air-inducing blades (31) are distributed in a circular array around the axis of the impeller (3).
4. The cooling structure of the mid-mounted motor according to claim 1, characterized in that: The mounting base (1) comprises a first shell (11), a second shell (12) and a mounting bracket (13); the dual-shaft motor (2) is detachably connected to the mounting bracket (13); the first shell (11) is detachably connected to the second shell (12); the mounting bracket (13) is clamped between the first shell (11) and the second shell (12); and the airflow channel (4) passes through the first shell (11), the second shell (12) and / or the mounting bracket (13).
5. The cooling structure of the mid-mounted motor according to claim 4, characterized in that: The mounting bracket (13) is formed with a plurality of connecting ear plates (131), the connecting ear plates (131) are detachably connected to a connecting pipe (132), the mounting seat (1) is provided with a plurality of connecting bolts (14), the connecting bolts (14) fasten the first shell (11) and the second shell (12), and the connecting bolts (14) are also passed through the connecting pipe (132).
6. The cooling structure of the mid-mounted motor according to claim 5, characterized in that: The connecting ear plate (131) is provided with a mounting groove (1311), the outer wall of the connecting tube (132) is provided with a snap ring groove (1321) coaxial with the connecting tube (132), the connecting tube (132) is snap-fitted to the mounting groove (1311), and the connecting ear plate (131) is inserted into the snap ring groove (1321).
7. The cooling structure of the mid-mounted motor according to claim 4, characterized in that: The mounting bracket (13) partially wraps the dual-shaft motor (2); a plurality of support bars (133) are formed on the inner wall of the mounting bracket (13), and the dual-shaft motor (2) abuts against the support bars (133).
8. The cooling structure of the mid-mounted motor according to claim 1, characterized in that: The mounting seat (1) is provided with a wire threading channel (5), and the wire threading channel (5) is used for allowing the lead wires of the double-output shaft motor (2) to pass through.