Water replenishing pump motor heat dissipation device with overheating protection function

Abstract

This utility model provides a heat dissipation device for a water pump motor with overheat protection, relating to the field of motor heat dissipation technology. It includes: a water pump housing; a stabilizing hole in the middle of the housing; a bearing installed inside the stabilizing hole; a heat dissipation shell installed on one side of the housing; a protective shell installed on one side of the heat dissipation shell; and bolt mounting holes on both sides of the heat dissipation shell and the protective shell. The heat generated by the motor is transferred to spiral heat-absorbing fins inside the heat dissipation shell through the outer surface. The heat-absorbing fins rapidly absorb heat by increasing the contact area. Simultaneously, the motor drive shaft drives a cooling fan to rotate, drawing in cool outside air through a filter into the heat dissipation shell. The spiral heat-absorbing fins guide the airflow to form a spiral path, achieving efficient air cooling.

Description

Technical Field

[0001] This utility model relates to the field of motor heat dissipation technology, and in particular to a heat dissipation device for a water pump motor with overheat protection function. Background Technology

[0002] During the operation of the water pump, the motor, as the core drive component, continuously generates heat due to winding losses and mechanical friction. If this heat cannot be dissipated in time, the motor temperature will rise, which will not only accelerate the aging of insulation materials and reduce operating efficiency, but in severe cases, it may also cause the motor to burn out, resulting in equipment downtime and economic losses. Currently, fans are installed on the motor to solve the above problems. However, the current heat dissipation and protection solutions for water pump motors have the following shortcomings:

[0003] Traditional water pump motors often use a single fan for air cooling. When the fan is used for air cooling, the airflow path is chaotic, resulting in insufficient heat exchange with the motor surface. Furthermore, dust and impurities in the outside air easily adhere to the filter surface, further hindering heat dissipation. Currently, manual cleaning is required periodically. In addition, due to the low heat transfer efficiency of the fan, the motor remains at a high temperature. Moreover, sudden faults such as motor and fan jamming or winding short circuits can easily cause the temperature to rise sharply, potentially leading to motor burnout. Utility Model Content

[0004] This utility model relates to a heat dissipation device for a water pump motor with overheat protection. Through the synergistic effect of a cooling fan, heat absorption fins, and a filter, a highly efficient air-cooled heat dissipation system is formed. With the real-time monitoring and protection of the overheat protector, the operating temperature of the motor can be effectively controlled. The self-cleaning function of the cleaning structure ensures the long-term stability of the heat dissipation system. The overall structure is compact and does not require complex control components, making it suitable for heat dissipation protection scenarios for various water pump motors.

[0005] This utility model provides a heat dissipation device for a water pump motor with overheat protection function, specifically including: a water pump housing, a stabilizing hole in the middle of the water pump housing, a bearing installed inside the stabilizing hole, a heat dissipation housing installed on one side of the water pump housing, a protective housing installed on one side of the heat dissipation housing, a set of bolt mounting holes on both sides of the heat dissipation housing and the protective housing, two symmetrically distributed threaded connecting sleeves on one side of the water pump housing, a motor installed inside the protective housing, the drive shaft of the motor passing through the inside of the bearing, a cleaning brush installed on the outer side of the drive shaft of the motor, and a keyway on both sides of the drive shaft of the motor.

[0006] Furthermore, a filter screen is installed on one side of the heat dissipation housing, and the filter screen is connected to the interior of the heat dissipation housing. A stepped groove is opened on one side of the filter screen, and the stepped groove extends to the inner side of the heat dissipation housing. A set of positioning protrusions distributed in a ring array are provided at the edge of the filter screen. The positioning protrusions are arc structures. A set of slots corresponding to the positioning protrusions are opened on the inner side of the heat dissipation housing.

[0007] Furthermore, a set of heat-absorbing fins is provided on the inner side of the heat dissipation housing. The heat-absorbing fins have a spiral structure, and the bottom of the heat-absorbing fins is in slight contact with the outer side of the motor.

[0008] Furthermore, a vertical stabilizing hole is opened on one side of the heat dissipation housing. The stabilizing hole has a rectangular structure. An overheat protector is installed inside the stabilizing hole. Two heat-conducting blocks are provided at the bottom of the overheat protector. The heat-conducting blocks are in contact with the outer surface of the motor.

[0009] Furthermore, a cooling fan is installed on one side of the drive shaft of the motor, and a slot corresponding to the drive shaft is opened on one side of the cooling fan, with one side of the drive shaft extending into the inside of the slot.

[0010] Furthermore, an elastic element is provided on one side of the cleaning brush. The elastic element has a spiral structure, and a rotating ring is provided on one side of the elastic element. The rotating ring, the elastic element, and the cleaning brush cooperate with each other to form a cleaning structure. One side of the rotating ring contacts the inner ring of the bearing.

[0011] This utility model provides a heat dissipation device for a water pump motor with overheat protection function, which has the following beneficial effects:

[0012] This utility model includes a heat dissipation device for a motor, consisting of a heat dissipation shell, a filter, an overheat protector, a protective shell, and a cooling fan. The heat generated by the motor is transferred to the spiral heat-absorbing fins inside the heat dissipation shell through the outer surface. The heat-absorbing fins quickly absorb heat by increasing the contact area. At the same time, the motor drive shaft drives the cooling fan to rotate, drawing outside cold air into the heat dissipation shell through the filter. The spiral heat-absorbing fins guide the airflow to form a spiral path, extending the contact time between the cold air and the heat-absorbing fins. After sufficient heat exchange, the hot air is discharged from the other side of the shell, achieving efficient air cooling.

[0013] When the motor drives the shaft to rotate, the cleaning structure rotates synchronously with the shaft. The elastic support of the elastic element ensures that the cleaning brush always maintains flexible contact with the filter screen. During the rotation, it removes dust and impurities from the surface of the filter screen and prevents the filter screen from clogging. This solves the problem of the filter screen needing to be cleaned manually and regularly. In addition, the motor drives the cooling fan and the cleaning structure to rotate directly, eliminating the need for an additional power source and saving energy.

[0014] In addition, the rotating ring contacts the inner ring of the bearing to ensure stable rotation of the cleaning structure and avoid cleaning failure due to excessive vibration and friction. At the same time, the elastic support of the elastic element ensures that the cleaning brush always maintains appropriate pressure contact with the filter screen, achieving compensatory cleaning and avoiding incomplete cleaning due to slight deformation of the filter screen or installation errors.

[0015] An overheat protector is installed to monitor the motor temperature in real time through a bottom heat-conducting block. When the temperature exceeds the set threshold, the internal overheat-deformed metal sheet is triggered to cut off the motor power supply through a protection circuit composed of the controller and the junction box, preventing the motor from being damaged due to overheating. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0017] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0018] In the attached diagram:

[0019] Figure 1 A schematic diagram of the axial structure of the motor cooling device of this utility model after assembly is shown;

[0020] Figure 2 A schematic diagram of the axial side structure of the disassembled structure of the motor heat dissipation device of this utility model is shown;

[0021] Figure 3 This utility model illustrates Figure 2 A schematic diagram of the axonal structure from an elevation viewpoint;

[0022] Figure 4 A schematic diagram of the axial side structure of a partially cut-out structure of the motor heat dissipation device of this utility model is shown.

[0023] Figure 5 This utility model illustrates Figure 4 A schematic diagram of a partial axial side structure;

[0024] Figure 6 A schematic diagram of the axial side structure of a further cross-section of the motor heat dissipation device of this utility model is shown;

[0025] Figure 7 This utility model illustrates Figure 6 Front view structural diagram;

[0026] Figure 8 A top view schematic diagram of the cleaning structure of this utility model is shown.

[0027] List of reference numerals

[0028] 1. Water pump housing; 101. Bearing;

[0029] 2. Heat dissipation housing; 201. Filter screen; 202. Overheat protector;

[0030] 3. Protective casing;

[0031] 4. Motor; 401. Cooling fan;

[0032] 5. Cleaning structure; 501. Rotating ring; 502. Elastic element; 503. Cleaning brush. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] Example 1: Please refer to Figures 1 to 8 :

[0035] This utility model proposes a heat dissipation device for a water pump motor with overheat protection function, including: a water pump housing 1, a stabilizing hole in the middle of the water pump housing 1, a bearing 101 installed inside the stabilizing hole, the bearing 101 being stably installed inside the stabilizing hole according to actual needs and referring to the prior art, the bearing 101 model being selected according to actual needs, a heat dissipation housing 2 being installed on one side of the water pump housing 1, a protective housing 3 being installed on one side of the heat dissipation housing 2, a set of bolt mounting holes being opened on both sides of the heat dissipation housing 2 and the protective housing 3, the bolt mounting holes being installed with matching bolts according to actual needs, the bolts being installed to complete the stable connection of the heat dissipation housing 2 and the protective housing 3, two symmetrically distributed threaded connecting sleeves being provided on one side of the water pump housing 1, the thread pitch of the threaded connecting sleeves being machined according to actual needs, the threaded connecting sleeves and the threaded mounting holes of the heat dissipation housing 2 being installed with matching bolts according to actual needs, the bolts being installed to complete the stable connection of the water pump housing 1 and the heat dissipation housing 2;

[0036] A motor 4 is installed inside the protective housing 3. The model of the motor 4 is selected according to actual needs. The drive shaft of the motor 4 passes through the inside of the bearing 101. The bearing 101 reduces the coefficient of friction when the drive shaft rotates, reducing the extra heat generated by friction. A cooling fan 401 is installed on one side of the drive shaft of the motor 4. A slot corresponding to the drive shaft is opened on one side of the cooling fan 401. One side of the drive shaft extends into the inside of the slot. The cooling fan 401 is firmly installed on one side of the drive shaft with the help of an interference fit. With the cooperation of the keyway, the motor 4 can drive the cooling fan 401 to rotate at the same time. Specifically, the drive shaft of the motor 4 directly drives the cooling fan 401 to rotate without the need for an additional power source, saving energy. The interference fit and the keyway double fixation ensure that the cooling fan 401 does not loosen or slip when rotating at high speed, ensuring the stable operation of the cooling fan 401, continuously drawing in cold air from the outside into the heat dissipation housing 2, and accelerating the discharge of hot air from the housing, enhancing the heat exchange with the heat absorption fins, and improving the overall heat dissipation effect.

[0037] In this embodiment, a cleaning brush 503 is installed on the outer side of the drive shaft of the motor 4. An elastic element 502 with a spiral structure is provided on one side of the cleaning brush 503. A rotating ring 501 is provided on one side of the elastic element 502. The rotating ring 501, elastic element 502, and cleaning brush 503 cooperate to form the cleaning structure 5. The rotating ring 501, elastic element 502, and cleaning brush 503 are integrated using a welding process. The elastic element 502 elastically supports the rotating ring 501 and cleaning brush 503 to both sides. One side of the rotating ring 501 contacts the inner ring of the bearing 101. The elastic element 502 supports the cleaning brush 503. The cleaning brush 503 makes flexible contact with the filter screen 201. Specifically, the elastic support of the elastic element 502 ensures that the cleaning brush 503 always maintains appropriate pressure contact with the filter screen 201, achieving compensated cleaning and avoiding incomplete cleaning due to slight deformation of the filter screen 201 or installation errors. The rotating ring 501 contacts the inner ring of the bearing 101, ensuring that the cleaning structure 5 rotates stably with the drive shaft. When the cleaning brush 503 rotates, it can promptly remove dust and impurities from the surface of the filter screen 201, preventing the filter screen 201 from becoming clogged and affecting the ventilation of the heat dissipation shell 2, ensuring the long-term efficient operation of the heat dissipation system. At the same time, the integrated structural design improves the overall strength and service life of the cleaning structure 5.

[0038] In this embodiment, the drive shaft of the motor 4 has a keyway on each side. With the cooperation of the keyways, the motor 4 can simultaneously drive the cleaning brush 503 to rotate. A filter screen 201 is installed on one side of the heat dissipation housing 2. The filter screen 201 is connected to the interior of the heat dissipation housing 2. A stepped groove is opened on one side of the filter screen 201, extending to the inner side of the heat dissipation housing 2. A set of positioning protrusions distributed in a circular array are provided at the edge of the filter screen 201. The positioning protrusions have an arc structure. A set of slots corresponding to the positioning protrusions are opened on the inner side of the heat dissipation housing 2. Specifically, the positioning protrusions and the slots cooperate to realize the quick positioning and installation of the filter screen 201, ensuring that the filter screen 201 is tightly connected to the heat dissipation housing 2, preventing unfiltered air from carrying dust and impurities into the interior of the heat dissipation housing 2, and avoiding dust adhering to the surface of the motor 4 and affecting the heat dissipation efficiency. At the same time, the stepped groove design provides installation guidance and limit for the filter screen 201, making it easy to disassemble, clean or replace later.

[0039] In this embodiment, a set of heat-absorbing fins is provided on the inner side of the heat dissipation housing 2. The heat-absorbing fins have a spiral structure, and the bottom of the heat-absorbing fins makes slight contact with the outer surface of the motor 4. Specifically, the spiral structure of the heat-absorbing fins increases the contact area with the outer surface of the motor 4, which can more efficiently absorb the heat generated by the operation of the motor 4. The slight contact method ensures the effectiveness of heat transfer and avoids the additional friction caused by close contact from affecting the operation of the motor 4. At the same time, the spiral structure can guide the air to form a spiral airflow in the heat dissipation housing 2, prolonging the residence time of the cold air in the housing and improving the heat exchange efficiency. A vertical stabilizing hole is opened on one side of the heat dissipation housing 2. The stabilizing hole has a rectangular structure, and the inner side of the stabilizing hole is equipped with... An overheat protector 202 is provided. The model of the overheat protector 202 can be selected according to actual needs. An overheat-deformable metal sheet structure can be selected. Two heat-conducting blocks are provided at the bottom of the overheat protector 202. The heat-conducting blocks are in contact with the outer surface of the motor 4. Specifically, the heat-conducting blocks are in close contact with the outer surface of the motor 4, which can quickly conduct the temperature of the motor 4 to the overheat protector 202, ensuring that the overheat protector 202 monitors the temperature of the motor 4 in real time and accurately. When the temperature of the motor 4 exceeds the threshold, the overheat-deformable metal sheet structure can trigger the protection mechanism to cut off the power supply to the motor 4 in time, preventing the motor 4 from being damaged due to overheating. The rectangular stabilizing hole provides a stable installation position for the overheat protector 202, ensuring its operational stability.

[0040] Example 2, based on Example 1, such as Figures 1-6 As shown, the water pump housing 1 is a partial structure. A finished product structure can be selected for the water pump housing 1 according to actual needs.

[0041] Example 3, based on Example 1, such as Figures 1-6As shown, a power cord is provided above the overheat protector 202. It is necessary to set up a controller and junction box of existing technology to form an overheat protection circuit with the motor 4 and the overheat protector 202. When the motor 4 overheats, the overheat protector 202 will control the motor 4 to cut off the power in time.

[0042] The working principle of this embodiment:

[0043] First, the bearing 101 is embedded into the stabilizing hole of the water pump housing 1. The heat dissipation housing 2 is fixed to the threaded connection sleeve of the water pump housing 1 by bolts. Then, the protective housing 3 is fastened to the heat dissipation housing 2 through the bolt mounting holes to form a closed heat dissipation space.

[0044] Next, the motor 4 is installed securely inside the protective housing 3, and the drive shaft of the motor 4 is passed through the bearing 101 and connected to the cooling fan 401 and the cleaning brush 503 of the cleaning structure 5 through the keyway to achieve synchronous drive.

[0045] When installing the filter screen 201, align its positioning protrusion with the slot of the heat sink housing 2, push it into place along the stepped groove, and complete the quick fixation; embed the overheat protector 202 into the vertical stabilizing hole of the heat sink housing 2, so that its heat conduction block is in close contact with the outer side of the motor 4.

[0046] When the water pump is started, the drive shaft of motor 4 synchronously drives the water pump impeller, cooling fan 401 and cleaning brush 503 to rotate.

[0047] During the operation of motor 4, no additional operation or cleaning of heat dissipation and cleaning components is required. The device can automatically complete heat dissipation, cleaning of filter screen 201, and overheat protection of motor 4.

[0048] If device maintenance is required, the filter screen 201 can be directly disassembled for cleaning or replacement. The cleaning structure 5 can be removed for inspection by the deformation of the elastic element 502.

[0049] When the temperature of motor 4 rises abnormally, the overheat protector 202 senses the temperature through the heat-conducting block. Once the temperature reaches the threshold, the protection circuit is automatically triggered to cut off the power supply to motor 4. After the fault is cleared, the overheat protector 202 is reset and motor 4 is restarted to resume operation.

Claims

1. A heat dissipation device for the water pump motor with overheat protection function, including: The water pump housing (1), the heat dissipation housing (2) and the motor (4) are provided. A stabilizing hole is opened in the middle of the water pump housing (1), and a bearing (101) is installed inside the stabilizing hole. The water pump housing (1) is characterized by having a heat dissipation housing (2) installed on one side of the water pump housing (1) and a protective housing (3) installed on one side of the heat dissipation housing (2). A set of bolt mounting holes are opened on both sides of the heat dissipation housing (2) and the protective housing (3). Two symmetrically distributed threaded connecting sleeves are provided on one side of the water pump housing (1). A motor (4) is installed inside the protective housing (3). The drive shaft of the motor (4) passes through the inside of the bearing (101). A cleaning brush (503) is installed on the outside of the drive shaft of the motor (4). A keyway is opened on both sides of the drive shaft of the motor (4).

2. The water pump motor cooling device with overheat protection function according to claim 1, characterized in that, A filter screen (201) is installed on one side of the heat dissipation housing (2). The filter screen (201) is connected to the interior of the heat dissipation housing (2). A stepped groove is opened on one side of the filter screen (201), and the stepped groove extends to the inner side of the heat dissipation housing (2).

3. The water pump motor cooling device with overheat protection function according to claim 2, characterized in that, The filter screen (201) has a set of positioning protrusions arranged in a ring array at its edge, and a set of slots corresponding to the positioning protrusions are opened on the inner side of the heat dissipation housing (2).

4. The water pump motor cooling device with overheat protection function according to claim 1, characterized in that, A set of heat-absorbing sheets is provided on the inner side of the heat dissipation housing (2), and the bottom of the heat-absorbing sheets is in slight contact with the outer side of the motor (4).

5. The water pump motor cooling device with overheat protection function according to claim 1, characterized in that, A vertical stabilizing hole is opened on one side of the heat dissipation housing (2), and an overheat protector (202) is installed inside the stabilizing hole. Two heat-conducting blocks are provided at the bottom of the overheat protector (202), and the heat-conducting blocks are in contact with the outer side of the motor (4).

6. The water pump motor cooling device with overheat protection function according to claim 1, characterized in that, The drive shaft of the motor (4) has a cooling fan (401) installed on one side. A slot corresponding to the drive shaft is opened on one side of the cooling fan (401), and one side of the drive shaft extends into the slot.

7. The water pump motor cooling device with overheat protection function according to claim 1, characterized in that, The cleaning brush (503) has an elastic element (502) on one side, and a rotating ring (501) on one side of the elastic element (502). The rotating ring (501), the elastic element (502), and the cleaning brush (503) cooperate to form a cleaning structure (5). One side of the rotating ring (501) is in contact with the inner ring of the bearing (101).

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