Circulating fan motor for refrigerating chamber of refrigerator
By installing a water-blocking ring in the refrigerator's cooling compartment circulating fan to block condensation and fling out accumulated water, the problem of condensation causing short circuits in the motor circuit board was solved, improving the motor's reliability and lifespan.
Patent Information
- Application Number
- CN202520502111.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-20
AI Technical Summary
Condensate from the refrigerator's cooling compartment circulating fan can easily drip onto the motor circuit board, causing a short circuit and failure, affecting the refrigerator's normal operation and increasing maintenance costs.
A water-blocking ring is installed between the impeller and the support. The water-blocking ring is connected to the impeller and fitted with the motor circuit board to prevent condensate from dripping directly and to throw out the accumulated water through centrifugal force, thus preventing it from entering the motor circuit board.
It effectively prevents condensation from dripping onto the motor circuit board, improving the motor's reliability and lifespan, and reducing maintenance costs.
Smart Images
Figure CN223942525U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fan motor technology, and in particular to a refrigerator compartment circulating fan motor. Background Technology
[0002] The refrigerator's cooling compartment circulation fan is a key component for maintaining air circulation and even temperature distribution inside the refrigerator. However, a common problem in traditional designs is that condensation easily drips onto the motor circuit board, causing short circuits and failure. This is especially noticeable in high humidity environments, where condensation formation is more pronounced, increasing the risk of damage to the motor circuit board. This malfunction not only affects the refrigerator's normal operation but can also damage other electrical components, increasing repair costs and user inconvenience.
[0003] The purpose of this invention is to solve the problem of condensate dripping from the refrigerator's cooling compartment circulating fan onto the motor circuit board, causing the motor circuit board to short-circuit and fail. Utility Model Content
[0004] The purpose of this invention is to solve the problem of condensate dripping from the refrigerator's cooling compartment circulating fan onto the motor circuit board, causing a short circuit and failure of the motor circuit board. This invention employs the following technical solution:
[0005] A refrigerator compartment circulating fan motor includes a bracket, a motor body is mounted on one side of the bracket, a motor circuit board is mounted on one side of the motor body, an impeller is mounted on the other side of the motor body, a water baffle ring is mounted on one side of the bracket, and the impeller is provided with a docking part that engages with the water baffle ring.
[0006] In the refrigerator compartment circulating fan motor described above, the docking part is an annular groove formed on one side of the impeller.
[0007] In the refrigerator compartment circulating fan motor described above, one end of the water baffle ring is disposed inside the docking part, and the depth to which the water baffle ring is inserted into the docking part is 1mm to 1.6mm.
[0008] In the refrigerator compartment circulating fan motor described above, the radial clearance between the water baffle ring and the impeller is 0.25mm to 0.5mm.
[0009] As described above, in a refrigerator compartment circulating fan motor, the motor circuit board is fitted inside the water-blocking ring.
[0010] Implementing the embodiments of this utility model has the following beneficial effects:
[0011] 1. In this utility model, when condensate drips along the gap between the bracket and the impeller, it is blocked by the water baffle ring and will not drip directly onto the motor circuit board. When there is a lot of condensate, the water accumulated in the gap between the impeller and the water baffle will be thrown out by the rotating impeller to prevent condensate from entering the motor circuit board, thereby improving the reliability and service life of the motor.
[0012] In summary, this utility model solves the problem of condensate dripping from the refrigerator's cooling compartment circulating fan onto the motor circuit board, causing the motor circuit board to short-circuit and fail. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a schematic diagram of the structure of a refrigerator compartment circulating fan motor according to the present invention.
[0015] As shown in the figure;
[0016] 1. Bracket; 2. Motor body; 3. Motor circuit board; 4. Impeller; 41. Connecting part; 5. Water baffle ring. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] like Figure 1As shown, this utility model proposes a refrigerator compartment circulating fan motor, including a bracket 1. A motor body 2 is mounted on one side of the bracket 1, and a motor circuit board 3 is mounted on one side of the motor body 2. An impeller 4 is mounted on the other side of the motor body 2. A water-blocking ring 5 is mounted on one side of the bracket 1, and the impeller 4 has a connecting part 41 that mates with the water-blocking ring 5. When condensate drips along the gap between the bracket 1 and the impeller 4, the water-blocking ring 5 prevents it from dripping directly onto the motor circuit board 3. When there is a large amount of condensate, the water accumulated in the gap between the impeller 4 and the water-blocking ring 5 is flung out by the rotating impeller 4, preventing condensate from entering the motor circuit board 3. This design effectively solves the problem of short-circuit failure of the motor circuit board 3 caused by condensate in traditional refrigerator compartment circulating fan motors, improving the motor's reliability and service life. The structure is simple and easy to implement, requiring no significant modifications to existing fan motor designs, thus reducing manufacturing costs.
[0019] Furthermore, as a preferred embodiment of the invention and not a limitation thereof, the mating portion 41 is an annular groove formed on one side of the impeller 4. One end of the water-retaining ring 5 is disposed within the mating portion 41. This structure not only effectively prevents condensate from dripping onto the motor circuit board 3, but also achieves precise positioning and installation through the tight fit between the mating portion 41 and the water-retaining ring 5. During assembly, one end of the water-retaining ring 5 is inserted into the annular groove to ensure its accurate position, thereby simplifying the installation process and ensuring that the water-retaining ring will not shift or loosen during use.
[0020] Optionally, in some embodiments, the mating portion 41 is a collar sleeved around the water-retaining ring 5. This design changes the fit between the water-retaining ring 5 and the impeller 4 from an embedded type to a wrapping type. When condensate drips, the water-retaining ring 5 can still effectively prevent water from directly contacting the motor circuit board 3. Since the mating portion 41 is wrapped around the outside of the water-retaining ring 5 in the form of a collar, any water accumulated between the water-retaining ring 5 and the collar will be thrown out by centrifugal force during impeller rotation, thereby preventing condensate from entering the motor. In addition, this design also ensures the stability of the water-retaining ring 5 under high-speed rotation, avoiding positional displacement caused by vibration or centrifugal force.
[0021] Optionally, in some embodiments, the mating portion 41 is a collar fitted inside the water-blocking ring 5. Specifically, the outer diameter of the water-blocking ring 5 is slightly larger than the inner diameter of the mating portion 41, so that the mating portion 41 can be tightly fitted inside the water-blocking ring 5. This design not only ensures a tight fit between the water-blocking ring 5 and the impeller 4, but also effectively prevents water from directly contacting the motor circuit board 3 when condensate drips. Furthermore, due to the tight fit between the mating portion 41 and the water-blocking ring 5, the water accumulated in the gap between them is thrown out by centrifugal force during the rotation of the impeller 3, preventing condensate from entering the motor.
[0022] Furthermore, as a preferred embodiment of the invention and not a limitation thereof, the depth to which the water-retaining ring 5 is inserted into the mating portion 41 is 1 mm to 1.6 mm. By setting the insertion depth of the water-retaining ring 5 into the mating portion 41 within the range of 1 mm to 1.6 mm, a tight fit between the water-retaining ring and the impeller can be ensured. The appropriate insertion depth makes the water-retaining ring easy to position and install, reducing the complexity and errors in the assembly process.
[0023] Furthermore, as a preferred embodiment of the invention and not a limitation thereof, the radial clearance between the baffle ring 5 and the impeller 4 is 0.25 mm to 0.5 mm. This radial clearance not only avoids direct contact between the baffle ring and the impeller, reducing friction and wear, but also extends the service life of both. This design enables the fan motor to maintain a highly efficient and stable operating state during long-term operation.
[0024] Furthermore, as a preferred embodiment of the present invention and not a limitation thereof, the motor circuit board 3 is fitted inside the water-retaining ring 5. By placing the motor circuit board 3 inside the water-retaining ring 5, its waterproof performance can be significantly improved, providing more comprehensive protection and reducing the impact of the external environment (such as moisture, dust, etc.) on the motor circuit board 3.
[0025] Example 1:
[0026] This utility model proposes a refrigerator compartment circulating fan motor, including a bracket 1, a motor body 2 mounted on one side of the bracket 1, a motor circuit board 3 mounted on one side of the motor body 2, an impeller 4 mounted on the other side of the motor body 2, and a water-blocking ring 5 mounted on one side of the bracket 1. The impeller 4 has a connecting part 41 that mates with the water-blocking ring 5. When condensate drips along the gap between the bracket 1 and the impeller 4, it is blocked by the water-blocking ring 5 and will not drip directly onto the motor circuit board 3. When there is a lot of condensate, the water accumulated in the gap between the impeller 4 and the water-blocking ring 5 will be flung out by the rotating impeller 4 to prevent condensate from entering the motor circuit board 3. This design effectively solves the problem of short circuit failure of the motor circuit board caused by condensate in traditional refrigerator compartment circulating fan motors, improving the reliability and service life of the motor. The structure is simple and easy to implement, requiring no major modifications to the existing fan motor design, thus reducing manufacturing costs. The motor circuit board 3 is fitted inside the water-blocking ring 5. By placing the motor circuit board 3 inside the water-blocking ring 5, its waterproof performance can be significantly improved, providing more comprehensive protection and reducing the impact of the external environment (such as moisture, dust, etc.) on the motor circuit board 3.
[0027] The mating part 41 is an annular groove formed on one side of the impeller 4. One end of the water-retaining ring 5 is set inside the mating part 41. This structure not only effectively prevents condensate from dripping onto the motor circuit board 3, but also achieves precise positioning and installation through the tight fit between the mating part 41 and the water-retaining ring 5. During assembly, one end of the water-retaining ring 5 is inserted into the annular groove to ensure its accurate position, thereby simplifying the installation process and ensuring that the water-retaining ring will not shift or loosen during use.
[0028] The depth to which the baffle ring 5 is inserted into the mating part 41 is 1mm to 1.6mm. By setting the insertion depth of the baffle ring 5 into the mating part 41 within the range of 1mm to 1.6mm, a tight fit between the baffle ring and the impeller can be ensured. This moderate insertion depth makes the baffle ring easy to position and install, reducing complexity and errors during assembly. The radial clearance between the baffle ring 5 and the impeller 4 is 0.25mm to 0.5mm. This radial clearance not only avoids direct contact between the baffle ring and the impeller, reducing friction and wear, but also extends the service life of both. This design allows the fan motor to maintain a highly efficient and stable operating state during long-term operation.
[0029] The implementation method of Example 2 is as follows:
[0030] The difference between Embodiment 2 and Embodiment 1 is that the mating part 41 is an annular groove formed on one side of the impeller 4. One end of the water-retaining ring 5 is disposed within the mating part 41. This structure not only effectively prevents condensate from dripping onto the motor circuit board 3, but also achieves precise positioning and installation through the tight fit between the mating part 41 and the water-retaining ring 5. During assembly, one end of the water-retaining ring 5 is inserted into the annular groove to ensure its accurate position, thereby simplifying the installation process and ensuring that the water-retaining ring will not shift or loosen during use.
[0031] The implementation method of Example 3 is as follows:
[0032] The difference between Embodiment 3 and Embodiment 1 is that the connecting part 41 is a collar sleeved outside the water-retaining ring 5. This design changes the fit between the water-retaining ring 5 and the impeller 4 from an embedded type to a wrapping type. When condensate drips, the water-retaining ring 5 can still effectively prevent water from directly contacting the motor circuit board 3. Since the connecting part 41 is wrapped around the outside of the water-retaining ring 5 in the form of a collar, any water accumulated between the water-retaining ring 5 and the collar will be thrown out by centrifugal force during impeller rotation, thereby preventing condensate from entering the motor. In addition, this design also ensures the stability of the water-retaining ring 5 under high-speed rotation, avoiding positional displacement caused by vibration or centrifugal force.
[0033] Specifically, the working principle of this invention is as follows:
[0034] A motor body 2 is mounted on one side of the bracket 1, a motor circuit board 3 is mounted on one side of the motor body 2, and an impeller 4 is mounted on the other side. A water-blocking ring 5 is also mounted on the bracket 1, and the impeller 4 has an annular groove 41 that mates with the water-blocking ring 5. When condensate drips along the gap between the bracket 1 and the impeller 4, it is first blocked by the water-blocking ring 5, preventing it from dripping directly onto the motor circuit board 3. Because one end of the water-blocking ring 5 is inserted into the annular groove, and the insertion depth is controlled between 1mm and 1.6mm, a tight fit and precise positioning between the water-blocking ring 5 and the impeller 4 are ensured, preventing the water-blocking ring 5 from shifting or loosening during use.
[0035] The radial clearance between the baffle ring 5 and the impeller 4 is 0.25mm to 0.5mm. This design not only avoids direct contact between the two, reducing friction and wear, but also ensures that condensate does not accumulate in the gap between them. As the impeller 4 rotates, the water accumulated between the baffle ring 5 and the impeller 4 is thrown out by centrifugal force, further preventing condensate from entering the motor and contacting the motor circuit board 3. This structure is simple and easy to implement, requiring no significant modifications to the existing fan motor design, thus reducing manufacturing costs.
[0036] The motor circuit board 3 is housed inside the water-retaining ring 5, providing more comprehensive protection. By placing the motor circuit board 3 inside the water-retaining ring 5, its waterproof performance can be significantly improved, reducing the impact of external environmental factors (such as moisture and dust) on the motor circuit board, thereby enhancing the reliability and stability of the overall system.
[0037] In summary, this utility model solves the problem of condensate dripping from the refrigerator's cooling compartment circulating fan onto the motor circuit board, causing the motor circuit board to short-circuit and fail.
[0038] It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information. In addition, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0039] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.
Claims
1. A refrigerator compartment circulating fan motor, comprising a bracket (1), wherein a motor body (2) is mounted on one side of the bracket (1), characterized in that, A motor circuit board (3) is installed on one side of the motor body (2), an impeller (4) is installed on the other side of the motor body (2), a water baffle ring (5) is installed on one side of the bracket (1), and the impeller (4) is provided with a docking part (41) that docks with the water baffle ring (5).
2. A refrigerator compartment circulating fan motor according to claim 1, characterized in that, The docking part (41) is an annular groove formed on one side of the impeller (4).
3. A refrigerator compartment circulating fan motor according to claim 1, characterized in that, One end of the water-blocking ring (5) is disposed inside the docking part (41), and the depth to which the water-blocking ring (5) is inserted into the docking part (41) is 1 mm to 1.6 mm.
4. A refrigerator compartment circulating fan motor according to claim 1, characterized in that, The radial clearance between the water-blocking ring (5) and the impeller (4) is 0.25 mm to 0.5 mm.
5. A refrigerator compartment circulating fan motor according to claim 1, characterized in that, The motor circuit board (3) is fitted inside the water-blocking ring (5).