Waterproof motor of dust collector

Abstract

The utility model relates to the field of motors, in particular to a dust collector waterproof motor which comprises a motor, an impeller installed on an output shaft of the motor and a fan cover arranged outside the impeller in a covering mode and fixedly connected with a shell of the motor, a plurality of air guide channels evenly arranged around the axis of the impeller are formed in the impeller, and each air guide channel comprises an air outlet end and an air inlet end. The air inlet end is located at the position close to the motor. An air inlet is formed in the fan cover corresponding to the air inlet end, and an air outlet is formed in the fan cover corresponding to the air outlet end. The motor has the effect of improving the stability of the motor in the using process.

Description

Technical Field

[0001] The present application relates to the technical field of motors, and in particular to a waterproof motor for a vacuum cleaner. Background Art

[0002] A vacuum cleaner is a common household appliance that mainly uses a vacuum cleaner motor to generate negative pressure in a suction tube to extract dirt.

[0003] The vacuum cleaner motor mainly includes a motor and an impeller. The output shaft of the motor is connected to the impeller to drive the impeller to rotate. The impeller is covered with a shell on the outside. The shell is provided with an air inlet and an air outlet. During the rotation of the impeller, air enters the shell from the air inlet and is discharged from the air outlet. For example, a patent document with publication number CN110250990A discloses a high-pressure vacuum cleaner motor, which mainly includes a motor and an impeller. The impeller forms an air guide channel under the action of the blades. A wind hood is provided on the outside of the impeller, and an air inlet is provided on the side of the wind hood facing away from the motor, and an air outlet is provided on the side of the wind hood parallel to the motor. During the rotation of the impeller driven by the motor, air enters the wind hood from the air inlet and is discharged from the air outlet, thereby realizing the function of vacuuming.

[0004] When the vacuum cleaner is in use, the area inside the hood near the air inlet (i.e. the center of the impeller) is in a negative pressure environment (air is sucked into the hood from the air inlet), and the rest is in a positive pressure environment (air is squeezed out by the impeller). In a positive pressure environment, air tends to move toward the motor, and in actual use of the vacuum cleaner, the air entering the hood usually contains a lot of water vapor. This can damage the bearing between the motor's output shaft and the hood, affecting the use of the vacuum cleaner. Utility Model Content

[0005] In order to improve the stability of a vacuum cleaner during use, the present application provides a waterproof motor for the vacuum cleaner.

[0006] The waterproof motor of the vacuum cleaner provided in this application adopts the following technical solution:

[0007] A waterproof motor for a vacuum cleaner comprises a motor, an impeller mounted on an output shaft of the motor, and a hood arranged outside the impeller and fixedly connected to a motor housing, wherein a plurality of air guide channels evenly arranged around an impeller axis are formed on the impeller, the air guide channels comprising an air outlet end and an air inlet end, the air inlet end being located close to the motor; an air inlet is arranged at a position corresponding to the air inlet end on the hood, and an air outlet is arranged at a position corresponding to the air outlet end.

[0008] By adopting the above technical solution, during the rotation of the impeller, negative pressure is formed inside the hood near the air inlet end, and the air outside the hood enters the hood through the air inlet and then enters the air guide channel. After entering the air guide channel, the air is discharged from the air outlet to achieve the dust collection function. At the same time, since the air inlet end is located near the motor, the risk of air entering the hood moving toward the motor can be reduced, reducing the contact between the bearing between the hood and the motor and water vapor, increasing the service life of the bearing, and improving the stability of the vacuum cleaner during use.

[0009] Optionally, a partition plate is provided in the wind hood, and the partition plate divides the internal cavity of the wind hood into two along the axial direction of the impeller.

[0010] By adopting the above technical solution, the partition plate divides the internal cavity of the air hood into cavities respectively connected to the air inlet end and the air outlet end, thereby reducing the mutual influence of air in the two cavities and further affecting the dust collection efficiency of the vacuum cleaner.

[0011] Optionally, an air inlet pipe is provided at the air inlet.

[0012] By adopting the above technical solution, an air inlet pipe is provided to facilitate the connection between the motor and the dust collection pipe of the vacuum cleaner.

[0013] Optionally, a plurality of air outlets are arranged around the axis of the impeller.

[0014] By adopting the above technical solution, a plurality of air outlets are provided to improve the efficiency of exhausting air in the air hood and ensure the suction force during the use of the vacuum cleaner.

[0015] Optionally, a guide plate is provided between two adjacent air outlets, and a guide surface is provided on the guide plate, and one side of the guide surface is connected to a side wall of the air outlet for guiding air to enter the air outlet.

[0016] By adopting the above technical solution, during the rotation of the impeller, the air moves around the impeller, and part of the air moves to the position between the two air outlets. The side wall of the wind cover has a certain influence on the movement of the air, and the air blowing between the two air outlets is guided to the air outlet through the guide surface, thereby improving the smoothness of the motor exhaust and further improving the exhaust efficiency.

[0017] Optionally, two guide surfaces are provided, and the two guide surfaces are respectively connected to the side walls of two adjacent air outlets that are close to each other.

[0018] By adopting the above technical solution, the air is guided to move toward the two air outlets through the guide surface, thereby further improving the exhaust efficiency of the motor.

[0019] Optionally, a heat dissipation hole is provided on the motor housing, and the heat dissipation hole is connected to the cavity close to the air inlet end.

[0020] By adopting the above technical solution, negative pressure is formed in the gap directly connected to the air inlet end of the air guide channel. Under the action of air pressure, air outside the motor enters the interior of the motor, passes through the motor and enters the negative pressure cavity (i.e., the cavity directly connected to the air inlet end) through the heat dissipation holes, thereby achieving the purpose of active heat dissipation of the motor and further improving the stability of the vacuum cleaner during use.

[0021] Optionally, the number of heat dissipation holes is multiple.

[0022] By adopting the above technical solution and providing a plurality of heat dissipation holes, the heat dissipation effect of the motor is further improved.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Set the air inlet end of the impeller on the side close to the motor, so that negative pressure is formed inside the hood near the motor, which can prevent the air entering the hood from moving toward the motor and reduce the occurrence of bearing damage;

[0025] 2. A heat dissipation hole connected to the inside of the motor is opened on the motor. When negative pressure is formed inside the air cover, the external air passes through the motor and moves into the inside of the air cover, thereby dissipating the heat of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the local cross-sectional structure of an embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the structure of the wind hood of an embodiment of the present application.

[0029] Figure numerals: 1. motor; 2. impeller; 21. air guide channel; 22. air inlet end; 23. air outlet end; 3. air cover; 31. partition plate; 32. air inlet; 33. air outlet; 34. air inlet duct; 35. guide plate; 36. guide surface; 4. heat dissipation hole. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-3 This application is described in further detail.

[0031] The embodiments of the present application disclose a waterproof motor for a vacuum cleaner.

[0032] Reference Figure 1 and Figure 2The waterproof motor of the vacuum cleaner includes a motor 1, an impeller 2 and a hood 3, and the hood 3 is arranged outside the impeller 2. A plurality of air guide channels 21 arranged around the axis of the impeller 2 are formed on the side of the impeller 2, and the air guide channel 21 includes an air inlet end 22 and an air outlet end 23. The air inlet end 22 is located on the side close to the motor 1, and an air inlet 32 ​​is provided on the hood 3 near the air inlet end 22. External air enters the hood 3 through an air inlet pipe 34, and then enters the air guide channel 21. An air inlet pipe 34 is welded at the air inlet 32 ​​to facilitate the connection of the dust collection pipe of the vacuum cleaner. An air outlet 33 is provided on the hood 3 at a position corresponding to the air outlet end 23, and the air in the air guide channel 21 is discharged to the outside of the hood 3 through the air outlet 33 to achieve the dust collection function. At the same time, since the air inlet end 22 of the impeller 2 is located on the side close to the motor 1, under the action of air pressure, the air entering the air cover 3 flows in the direction away from the motor 1, thereby reducing the damage to the bearing caused by the contact between water vapor and the bearing, and improving the stability of the vacuum cleaner during use.

[0033] Reference Figure 2 and Figure 3 A partition plate 31 is provided inside the hood 3, and the partition plate 31 is annular in structure as a whole. Under the action of the partition plate 31, the inside of the hood 3 is divided into two cavities arranged along the axis of the impeller 2, wherein the cavity close to the air outlet end 23 is a positive pressure cavity, and the cavity close to the air inlet end 22 is a negative pressure cavity. During the rotation of the impeller 2, the negative pressure cavity is at negative pressure, and the positive pressure cavity is at positive pressure. The air inlet pipe 34 is connected to the negative pressure cavity, and the air outlet 33 is connected to the positive pressure cavity. It is convenient for air to enter and discharge, while reducing the mutual influence of the two cavities, thereby improving the dust collection effect.

[0034] Reference Figure 2 and Figure 3 A plurality of air outlets 33 are evenly spaced along the circumference of the hood 3 to improve the efficiency of air discharge. A guide plate 35 is provided on the inner wall of the hood 3 at a position corresponding to the air outlet 33. Two guide surfaces 36 are provided on the guide plate 35. The side of the two guide surfaces 36 close to the inner wall of the hood 3 is connected to the side walls of the two adjacent air outlets 33. The side of the two guide surfaces 36 away from the inner wall of the hood 3 is connected to each other to form a tip. The guide surface 36 can guide the air to flow toward the air outlet 33, thereby reducing the influence of the position between the two adjacent air outlets 33 on the discharge of air and improving the smoothness of the air discharge process.

[0035] Reference Figure 2 and Figure 3, a heat dissipation hole is provided on the side of the motor 1 housing close to the impeller 2, and the heat dissipation hole is connected to the negative pressure chamber. Under the action of air pressure, external air can flow into the negative pressure chamber from the side of the motor 1 away from the impeller 2, thereby realizing active heat dissipation of the motor 1 and further improving the stability of the vacuum cleaner during use. The heat dissipation holes can be arranged in multiple groups around the axis of the output shaft of the motor 1, and each group is provided with multiple heat dissipation holes. 4 In this embodiment, the heat dissipation holes are arranged in three groups, and each group is provided with two. The cross-sectional area of ​​the heat dissipation holes is not greater than 1cm 2 , to ensure the suction force at the air inlet pipe 34.

[0036] The implementation principle of the vacuum cleaner waterproof motor of the embodiment of the present application is: the installation direction of the impeller 2 is changed to form a negative pressure on the side of the air cover 3 close to the motor 1. Under the action of air pressure, while vacuuming is being achieved, the external air can pass through the motor 1 and move into the air cover 3. This reduces the possibility that the water vapor air entering the air cover 3 during the vacuuming process moves toward the direction close to the motor 1, thereby reducing the possibility that the bearing is damaged.

[0037] Reference Figure 1 and Figure 2 The waterproof motor of the vacuum cleaner includes a motor 1, an impeller 2 and a hood 3, and the hood 3 is arranged outside the impeller 2. A plurality of air guide channels 21 arranged around the axis of the impeller 2 are formed on the side of the impeller 2, and the air guide channel 21 includes an air inlet end 22 and an air outlet end 23. The air inlet end 22 is located on the side close to the motor 1, and an air inlet 32 ​​is provided on the hood 3 near the air inlet end 22. External air enters the hood 3 through an air inlet pipe 34, and then enters the air guide channel 21. An air inlet pipe 34 is welded at the air inlet 32 ​​to facilitate the connection of the dust collection pipe of the vacuum cleaner. An air outlet 33 is provided on the hood 3 at a position corresponding to the air outlet end 23, and the air in the air guide channel 21 is discharged to the outside of the hood 3 through the air outlet 33 to achieve the dust collection function. At the same time, since the air inlet end 22 of the impeller 2 is located on the side close to the motor 1, under the action of air pressure, the air entering the air cover 3 flows in the direction away from the motor 1, thereby reducing the damage to the bearing caused by the contact between water vapor and the bearing, and improving the stability of the vacuum cleaner during use.

[0038] Reference Figure 2 and Figure 3 A partition plate 31 is provided inside the hood 3, and the partition plate 31 is annular in structure as a whole. Under the action of the partition plate 31, the inside of the hood 3 is divided into two cavities arranged along the axis of the impeller 2, wherein the cavity close to the air outlet end 23 is a positive pressure cavity, and the cavity close to the air inlet end 22 is a negative pressure cavity. During the rotation of the impeller 2, the negative pressure cavity is at negative pressure, and the positive pressure cavity is at positive pressure. The air inlet pipe 34 is connected to the negative pressure cavity, and the air outlet 33 is connected to the positive pressure cavity. It is convenient for air to enter and discharge, while reducing the mutual influence of the two cavities, thereby improving the dust collection effect.

[0039] Reference Figure 2 and Figure 3 A plurality of air outlets 33 are evenly spaced along the circumference of the hood 3 to improve the efficiency of air discharge. A guide plate 35 is provided on the inner wall of the hood 3 at a position corresponding to the air outlet 33. Two guide surfaces 36 are provided on the guide plate 35. The side of the two guide surfaces 36 close to the inner wall of the hood 3 is connected to the side walls of the two adjacent air outlets 33. The side of the two guide surfaces 36 away from the inner wall of the hood 3 is connected to each other to form a tip. The guide surface 36 can guide the air to flow toward the air outlet 33, thereby reducing the influence of the position between the two adjacent air outlets 33 on the discharge of air and improving the smoothness of the air discharge process.

[0040] Reference Figure 2 and Figure 3 , a heat dissipation hole 4 is provided on the side of the motor 1 housing close to the impeller 2, and the heat dissipation hole 4 is connected to the negative pressure chamber. Under the action of air pressure, external air can flow into the negative pressure chamber from the side of the motor 1 away from the impeller 2, thereby realizing active heat dissipation of the motor 1 and further improving the stability of the vacuum cleaner during use. The heat dissipation holes 4 can be arranged in multiple groups around the axis of the output shaft of the motor 1, and each group is provided with multiple heat dissipation holes 4. In this embodiment, the heat dissipation holes 4 are arranged in three groups, and each group is provided with two. The cross-sectional area of ​​the heat dissipation holes 4 is not greater than 1cm 2 , to ensure the suction force at the air inlet pipe 34.

[0041] The implementation principle of the vacuum cleaner waterproof motor of the embodiment of the present application is: the installation direction of the impeller 2 is changed to form a negative pressure on the side of the air cover 3 close to the motor 1. Under the action of air pressure, while vacuuming is being achieved, the external air can pass through the motor 1 and move into the air cover 3. This reduces the possibility that the water vapor air entering the air cover 3 during the vacuuming process moves toward the direction close to the motor 1, thereby reducing the possibility that the bearing is damaged.

[0042] 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 vacuum cleaner waterproof motor, comprising a motor (1), an impeller (2) mounted on an output shaft of the motor (1), and a wind shield (3) disposed outside the impeller (2) and fixedly connected to a housing of the motor (1), characterized in that: A plurality of air guide channels (21) are formed on the impeller (2) and are evenly arranged around the axis of the impeller (2); the air guide channels (21) include an air outlet end (23) and an air inlet end (22); the air inlet end (22) is located close to the motor (1); an air inlet (32) is provided on the air hood (3) at a position corresponding to the air inlet end (22), and an air outlet (33) is provided at a position corresponding to the air outlet end (23).

2. The waterproof motor for vacuum cleaner according to claim 1, characterized in that: A partition plate (31) is provided inside the wind cover (3), and the partition plate (31) divides the internal cavity of the wind cover (3) into two along the axial direction of the impeller (2).

3. The waterproof motor for vacuum cleaner according to claim 1, characterized in that: An air inlet pipe (34) is provided at the air inlet (32).

4. The waterproof motor for vacuum cleaner according to claim 1, characterized in that: A plurality of air outlets (33) are arranged around the axis of the impeller (2).

5. The waterproof motor for vacuum cleaner according to claim 4, characterized in that: A guide plate (35) is provided between two adjacent air outlets (33), and a guide surface (36) is provided on the guide plate (35). One side of the guide surface (36) is connected to a side wall of the air outlet (33) and is used to guide air into the air outlet (33).

6. The waterproof motor for vacuum cleaner according to claim 5, characterized in that: The number of guide surfaces (36) is two, and the two guide surfaces (36) are respectively connected to the mutually adjacent side walls of two adjacent air outlets (33).

7. The waterproof motor for vacuum cleaner according to claim 1, characterized in that: The motor (1) housing is provided with a heat dissipation hole (4), and the heat dissipation hole (4) is connected to a cavity close to the air inlet end (22).

8. The waterproof motor for vacuum cleaner according to claim 7, characterized in that: The heat dissipation holes (4) are arranged in plurality.

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