A motor device for a home appliance

Abstract

The utility model discloses a kind of household electrical appliances motor devices, including fan assembly, support frame, circuit board and base;Support frame includes fixed ring and multiple support legs, fixed ring fixed fan assembly, and support leg connects circuit board;Multiple support legs form open heat dissipation passage between fan assembly and circuit board.Support leg is inclinedly set relative to vertical direction, and cross section adopts airfoil design;Fixed ring inner wall can be provided with flow guide fin.The utility model improves heat dissipation effect by open structure, reduces wind resistance, improves wind energy utilization rate, simultaneously simplifies structure, reduces cost.The device is particularly suitable for air purifier, pet care machine and other household electrical appliances.

Description

Technical Field

[0001] This utility model relates to the field of home appliance technology, specifically to a motor device for home appliances such as air purifiers and pet grooming machines. Background Technology

[0002] Currently, most motor modules used in air purifiers, pet grooming machines, and other home appliances on the market adopt a fully enclosed structure, completely encapsulating the motor, fan blades, and control circuit board within a plastic shell. This structure has the following drawbacks: First, the enclosed structure hinders effective airflow, preventing the heat generated by the motor and control circuit board during operation from dissipating in a timely manner, affecting the device's performance and lifespan; second, the fully enclosed structure requires more plastic material, increasing manufacturing costs and product weight; third, this structure is not conducive to the full utilization of wind energy, as some wind energy is blocked by the plastic structure, reducing the overall efficiency of the machine. Summary of the Invention

[0003] The purpose of this utility model is to provide a motor device for household appliances to solve the problems of poor heat dissipation, high cost and low wind energy utilization in the existing technology of motor modules.

[0004] The technical solution of this utility model is as follows:

[0005] A motor assembly for a household appliance includes a fan assembly, a support frame, a circuit board, and a base. The fan assembly includes a motor and fan blades connected to the motor's output shaft. The support frame includes a retaining ring and multiple support legs extending downwards from the periphery of the retaining ring; the retaining ring accommodates and secures the fan assembly. The circuit board is disposed below the support frame and connected to the bottom ends of each support leg. The circuit board is fixed to the base by fasteners. The multiple support legs form an open heat dissipation space between the fan assembly and the circuit board, constituting a heat dissipation channel that allows free airflow.

[0006] Preferably, the number of support legs is three or more, and they are evenly distributed around the circumference of the fixing ring.

[0007] Preferably, the support legs are extended outward at an angle of inclination of 15° to 25° relative to the vertical direction.

[0008] Preferably, the tilt angle of the support leg is 20°.

[0009] Preferably, the cross-section of the support leg adopts an airfoil design.

[0010] Preferably, the inner wall of the fixed ring is provided with a plurality of guide fins, which extend along the axial direction of the fixed ring to guide and organize the airflow passing through the fixed ring.

[0011] Preferably, the guide fins are evenly distributed circumferentially along the inner wall of the fixing ring, and the cross-sectional shape of the guide fins is any one of arc-shaped, straight, or wavy.

[0012] Preferably, the bottom end of the support leg is provided with a mounting part, which is fixedly connected to the corresponding mounting point on the circuit board by a locking method.

[0013] Preferably, the support leg and the fixing ring are integrally formed by injection molding, and a reinforcing rib structure is provided at the connection between the support leg and the fixing ring.

[0014] This utility model provides a motor device for household appliances, which solves the problems of poor heat dissipation, high cost, and low wind energy utilization in the existing technology. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0016] Figure 1 A three-dimensional structural schematic diagram of a motor device for a household appliance provided in an embodiment of this utility model;

[0017] Figure 2 A schematic diagram of the airflow direction of a motor device for a household appliance provided in this embodiment of the present invention;

[0018] Figure 3 A schematic diagram of another household appliance motor device provided in this embodiment of the present utility model;

[0019] Figure 4 A schematic diagram of the support frame provided in an embodiment of this utility model;

[0020] Figure 5 A schematic diagram of another household appliance motor device provided in this embodiment of the present utility model;

[0021] Figure 6 A schematic diagram of another household appliance motor device provided in this embodiment of the present utility model;

[0022] Figure 7 This is a top view of another household appliance motor device provided in an embodiment of the present utility model.

[0023] In the diagram: 100 - motor unit for household appliances, 110 - fan assembly, 120 - support frame, 121 - first support leg, 122 - second support leg, 123 - third support leg, 130 - circuit board, 140 - base. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0026] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0027] like Figure 1 and Figure 2 As shown, the household appliance motor device 100 of this embodiment includes a fan assembly 110, a support frame 120, a circuit board 130, and a base 140. The fan assembly 110 includes a motor and fan blades. The support frame 120 includes a retaining ring and three support legs (121, 122, 123). The retaining ring is used to fix the fan assembly 110. The three support legs are evenly distributed around the retaining ring and extend outward at a 20° angle relative to the vertical direction. The cross-section of the support legs adopts an airfoil aerodynamic design to effectively reduce wind resistance.

[0028] The circuit board 130 is positioned below the support frame 120, and the bottom end of the support leg is fixedly connected to the circuit board 130 by a locking mechanism. The circuit board 130 is fixed to the base 140 with screws. The support leg forms an open heat dissipation channel between the fan assembly 110 and the circuit board 130. When the fan assembly 110 is working, the airflow is guided along the support leg and flows over the surface of the circuit board 130, forming an effective heat dissipation airflow.

[0029] The inner wall of the fixing ring of the support frame 120 is equipped with guide fins. The guide fins extend along the axial direction of the fixing ring, are evenly distributed circumferentially, and have an arc-shaped cross-section. These guide fins can effectively guide and organize the airflow passing through the fixing ring, making the airflow distribution more uniform and improving heat dissipation efficiency.

[0030] like Figures 5 to 7 As shown, in this embodiment, the support legs of the support frame 120 are installed in the middle of the circuit board 130. This installation method makes the support structure more stable and optimizes the airflow path. The support legs and the fixing ring are integrally molded by injection molding, and a reinforcing rib structure is provided at the connection to improve the overall structural strength. The number of support legs can be set to four or more as needed to adapt to different product space requirements.

[0031] In this embodiment, the tilt angle of the support leg can be adjusted within the range of 15°-25°, preferably 20°, to achieve the best airflow guidance effect while ensuring structural strength. The guide fins can adopt a straight or wavy design to adapt to different airflow characteristics.

[0032] When this motor unit is used in air purifiers, its open structure allows for ample airflow, improving both heat dissipation and purification efficiency. When used in pet grooming machines, the optimized airflow better diffuses the grooming air, enhancing the user experience.

[0033] Although the invention has been described with reference to several typical embodiments, it should be understood that the terminology used is illustrative and exemplary, and not restrictive. As the invention can be embodied in many forms without departing from the spirit or essence of the utility model, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A motor device for household appliances, characterized in that, include: A fan assembly, the fan assembly including a motor and fan blades connected to the motor output shaft; A support frame, the support frame including a retaining ring and a plurality of support legs extending downward from the periphery of the retaining ring, the retaining ring being used to receive and secure the fan assembly; A circuit board, which is disposed below the support frame and connected to the bottom end of each of the support legs; The circuit board is fixed to the base by fasteners; The plurality of support legs form an open heat dissipation space between the fan assembly and the circuit board, constituting a heat dissipation channel that allows airflow to circulate freely.

2. The apparatus according to claim 1, characterized in that, The number of support legs is three or more, and the support legs are evenly distributed around the circumference of the fixing ring.

3. The apparatus according to claim 2, characterized in that, The support legs are extended outward at an angle of 15° to 25° relative to the vertical direction.

4. The apparatus according to claim 3, characterized in that, The tilt angle of the support leg is 20°.

5. The household appliance motor device according to claim 1, characterized in that, The cross-section of the support leg adopts an airfoil design.

6. The household appliance motor device according to claim 1, characterized in that, The inner wall of the fixed ring is provided with a number of guide fins, which extend along the axial direction of the fixed ring and are used to guide and organize the airflow passing through the fixed ring.

7. The household appliance motor device according to claim 6, characterized in that, The guide fins are evenly distributed circumferentially along the inner wall of the fixing ring, and the cross-sectional shape of the guide fins is any one of arc, straight sheet or wave shape.

8. The household appliance motor device according to claim 1, characterized in that, The bottom end of the support leg is provided with a mounting part, which is fixedly connected to the corresponding mounting point on the circuit board by a locking method.

9. The household appliance motor device according to claim 1, characterized in that, The support leg and the fixing ring are integrally formed by injection molding, and a reinforcing rib structure is provided at the connection between the support leg and the fixing ring.

10. The household appliance motor device according to claim 1, characterized in that, The motor unit of the home appliance is used in air purifiers or pet grooming machines.

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