An anti-creeping ventilation fan

Abstract

The utility model relates to an anti-creeping ventilation fan, which comprises a casing, a motor, a fan wheel, a waterproof cover, a cover plate and a panel. The bottom of the casing is provided with an opening. The panel is detachably arranged at the opening of the casing. The panel is provided with an air inlet. The fan wheel is rotatably arranged in the casing. The motor is arranged in the casing and drives the fan wheel to rotate. The waterproof cover is arranged in the casing and covers the motor. The motor shaft of the motor extends out of the waterproof cover and is fixedly connected with the fan wheel. The casing is provided with an air outlet. The top surface of the casing is provided with an exhaust hole which is in communication with the inner cavity of the casing. The cover plate is arranged at the bottom of the casing and is located between the casing and the panel. The cover plate is provided with an air inlet which is in communication with the inner cavity of the casing and the air inlet. The anti-creeping ventilation fan of the utility model utilizes the cooperation of the waterproof cover and the casing to realize the sealing and waterproofing of the motor. The water vapor cannot contact the motor through the waterproof cover. The motor is not easy to creep. Therefore, the utility model is safe to use.

Description

Technical Field

[0001] This utility model relates to the technical field of ventilation fans, and in particular to a leakage-proof ventilation fan. Background Technology

[0002] Bathroom exhaust fans are prone to contact with water vapor and steam, and the motor is also prone to contact with water vapor, which can cause the motor to leak electricity. When users or workers repair or replace the exhaust fan, they may be electrocuted when they come into contact with the motor, making it unsafe to use. Utility Model Content

[0003] The purpose of this invention is to provide a safe and leak-proof ventilation fan.

[0004] The purpose of this utility model is achieved as follows: A leakage-proof ventilation fan includes a housing, a motor, a fan wheel, a waterproof cover, a cover plate, and a panel. The housing has an opening at the bottom, and the panel is detachably mounted at the opening. The panel has an air inlet. The fan wheel is rotatably mounted inside the housing, and the motor is also located inside the housing, driving the fan wheel. The waterproof cover is located inside the housing and covers the motor. The motor shaft extends out of the waterproof cover and is fixedly connected to the fan wheel. The housing has an exhaust port, and the top surface of the housing has an exhaust hole communicating with the inner cavity of the housing. The cover plate is mounted on the bottom of the housing, positioned between the housing and the panel, and has an air inlet communicating with the inner cavity of the housing and the air inlet. This leakage-proof ventilation fan utilizes the cooperation of the waterproof cover and the housing to achieve a sealed and waterproof seal for the motor. Moisture cannot pass through the waterproof cover and contact the motor, making leakage unlikely. Therefore, this invention is safe to use.

[0005] The present invention can be further improved in the following ways.

[0006] The wind turbine has a drive shaft sleeve integrally formed at its center. The end of the sleeve facing away from the motor shaft is closed, and the other end is open. The motor shaft extends into the drive shaft sleeve and engages with it for transmission.

[0007] The inner surface of the casing is provided with an annular venting groove, and the venting hole is connected to the venting groove. The annular venting groove is located around the waterproof cover, so that water vapor can be discharged from the casing as soon as possible and will not enter the waterproof cover.

[0008] The waterproof cover is cylindrical, with an open upper end and a closed lower end. A clearance hole is provided at the lower end of the waterproof cover, through which the motor shaft of the motor extends out of the waterproof cover. An upper sealing ring is provided between the upper end of the waterproof cover and the inner surface of the housing, thereby further improving the sealing performance of the waterproof cover.

[0009] The inner surface of the housing has a waterproof cavity corresponding to the position of the motor. The motor is placed in the waterproof cavity, and the waterproof cover cooperates with the waterproof cavity to cover the motor. Therefore, this utility model has good sealing performance.

[0010] The upper end of the waterproof cover is fixedly connected to the inner surface of the casing.

[0011] The upper end of the waterproof cover is provided with an outward flange, and a connecting hole is provided on the outward flange. The waterproof cavity is provided with screw holes around the connecting hole, and the screw passes through the connecting hole and is threaded into the screw hole.

[0012] The edge of the outward-turned flange is provided with a sealing protrusion ring. The outward-turned flange abuts against the side wall of the waterproof cavity, and the sealing protrusion ring wraps around the side wall of the waterproof cavity.

[0013] The waterproof cavity is formed by the upward bulge of the inner surface of the casing.

[0014] A lower sealing ring is provided between the clearance hole and the motor shaft to further improve the sealing performance of the waterproof cover.

[0015] The beneficial effects of this utility model are as follows: This utility model of a leakage-proof ventilation fan utilizes a waterproof cover in conjunction with the casing to achieve a sealed and waterproof motor. Water vapor cannot pass through the waterproof cover and come into contact with the motor, making it less prone to leakage. Therefore, this utility model is safe to use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the anti-leakage ventilation fan according to Embodiment 1 of this utility model.

[0017] Figure 2 This is a structural schematic diagram of the anti-leakage ventilation fan of Embodiment 1 of this utility model from another angle.

[0018] Figure 3 This is a structural schematic diagram of the third angle of the anti-leakage ventilation fan of Embodiment 1 of this utility model.

[0019] Figure 4 This is a top view of the anti-leakage ventilation fan of Embodiment 1 of this utility model.

[0020] Figure 5 This is an exploded view of the anti-leakage ventilation fan of Embodiment 1 of this utility model.

[0021] Figure 6 yes Figure 4 Sectional view at point AA.

[0022] Figure 7 yes Figure 5 Enlarged view of point A in the middle.

[0023] Figure 8 This is a structural schematic diagram of the waterproof cover of this utility model.

[0024] Figure 9 yes Figure 6 Enlarged view of point B in the middle. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Example 1, as Figures 1 to 9 As shown, a leakage-proof ventilation fan includes a housing 1, a motor 3, a fan wheel 4, a waterproof cover 5, a cover plate 12, and a panel 2. The bottom of the housing 1 has an opening, and the panel 2 is detachably installed at the opening of the housing 1. The panel 2 has an air inlet 21. The fan wheel 4 is rotatably installed inside the housing 1. The motor 3 is installed inside the housing 1 and drives the fan wheel 4 to rotate. The waterproof cover 5 is installed inside the housing 1 and covers the motor 3. The motor shaft 31 of the motor 3 extends out of the waterproof cover 5 and is fixedly connected to the fan wheel 4. The housing 1 has an exhaust port 11, and the top surface of the housing 1 has an exhaust hole 17 that communicates with the inner cavity of the housing 1. The cover plate 12 is installed on the bottom of the housing 1 and is located between the housing 1 and the panel 2. The cover plate 12 has an air inlet 13 that communicates with the inner cavity of the housing 1 and the air inlet 21.

[0027] This is a more specific technical solution of the present invention.

[0028] The wind turbine 4 has a drive shaft sleeve 41 integrally formed in the center. The end of the sleeve facing away from the motor shaft 31 is closed, and the end of the sleeve facing away from the motor shaft 31 is open. The motor shaft 31 of the motor 3 extends into the drive shaft sleeve 41 and is in transmission cooperation with the drive shaft sleeve 41.

[0029] The inner surface of the housing 1 is provided with an annular exhaust groove 15, and the exhaust hole 17 is connected to the exhaust groove 15. The annular exhaust groove 15 is located around the waterproof cover 5.

[0030] The waterproof cover 5 is cylindrical, with the upper end open and the lower end closed. The lower end of the waterproof cover 5 is provided with a clearance hole 54. The motor shaft 31 of the motor 3 extends out of the waterproof cover 5 through the clearance hole 54. An upper sealing ring 19 is provided between the upper end of the waterproof cover 5 and the inner surface of the housing 1.

[0031] A waterproof cavity 16 is provided on the inner surface of the housing 1 corresponding to the position of the motor 3. The motor 3 is placed in the waterproof cavity 16, and the waterproof cover 5 cooperates with the waterproof cavity 16 to cover the motor 3.

[0032] The upper end of the waterproof cover 5 is fixedly connected to the inner surface of the housing 1.

[0033] The upper end of the waterproof cover 5 is provided with an outward flange 51, and the outward flange 51 is provided with a connecting hole 52. The periphery of the waterproof cavity 16 is provided with screw holes 18 corresponding to the connecting hole 52. The screw passes through the connecting hole 52 and is threadedly connected to the screw hole 18.

[0034] The edge of the outward flange 51 is provided with a sealing protrusion ring 53. The outward flange 51 abuts against the side wall of the waterproof cavity 16, and the sealing protrusion ring 53 wraps around the side wall of the waterproof cavity 16.

[0035] The waterproof cavity 16 is formed by the upward protrusion of the inner surface of the housing 1.

[0036] A lower sealing ring 20 is provided between the clearance hole 54 and the motor shaft 31.

[0037] When this exhaust fan operates in humid environments such as bathrooms and toilets, moisture enters the fan casing and is expelled through the exhaust port and vent. Because the motor is enclosed by a waterproof cavity and cover, moisture cannot come into contact with the motor or enter the waterproof cover. The motor shaft is also not exposed, so the motor is less prone to leakage. Even if leakage does occur, the motor and motor shaft are not exposed, so the user cannot touch the motor and there is no risk of electric shock.

Claims

1. A leakage-proof ventilation fan, comprising a housing (1), a motor (3), a fan wheel (4), a cover plate (12), and a panel (2), wherein the bottom of the housing (1) is provided with an opening, the panel (2) is detachably disposed at the opening of the housing (1), the panel (2) is provided with an air inlet (21), the fan wheel (4) is rotatably disposed inside the housing (1), and the motor (3) is disposed inside the housing (1) and drives the fan wheel (4) to rotate, characterized in that, It also includes a waterproof cover (5), which is located inside the housing (1) and covers the motor (3). The motor shaft (31) of the motor (3) extends out of the waterproof cover (5) and is fixedly connected to the impeller (4). The housing (1) is provided with an exhaust port (11). The top surface of the housing (1) is provided with an exhaust hole (17) that communicates with the inner cavity of the housing (1). The cover plate (12) is placed on the bottom of the housing (1) and is located between the housing (1) and the panel (2). The cover plate (12) is provided with an air inlet (13) that communicates with the inner cavity of the housing (1) and the air inlet (21).

2. The anti-leakage ventilation fan according to claim 1, characterized in that, The wind turbine (4) has a drive shaft sleeve (41) integrally formed in the center. The end of the sleeve facing away from the motor shaft (31) is closed, and the end of the sleeve facing away from the motor shaft (31) is open. The motor shaft (31) of the motor (3) extends into the drive shaft sleeve (41) and is in drive cooperation with the drive shaft sleeve (41).

3. The anti-leakage ventilation fan according to claim 2, characterized in that, The inner surface of the housing (1) is provided with an annular exhaust groove (15), and the exhaust hole (17) is connected to the exhaust groove (15). The annular exhaust groove (15) is located around the waterproof cover (5).

4. The anti-leakage ventilation fan according to claim 3, characterized in that, The waterproof cover (5) is cylindrical, with the upper end of the waterproof cover (5) open and the lower end of the waterproof cover (5) closed. The lower end of the waterproof cover (5) is provided with a clearance hole (54). The motor shaft (31) of the motor (3) extends out of the waterproof cover (5) through the clearance hole (54). An upper sealing ring (19) is provided between the upper end of the waterproof cover (5) and the inner surface of the housing (1).

5. The anti-leakage ventilation fan according to claim 4, characterized in that, The inner surface of the housing (1) is provided with a waterproof cavity (16) corresponding to the position of the motor (3). The motor (3) is placed in the waterproof cavity (16), and the waterproof cover (5) cooperates with the waterproof cavity (16) to cover the motor (3).

6. The anti-leakage ventilation fan according to claim 5, characterized in that, The upper end of the waterproof cover (5) is fixedly connected to the inner surface of the housing (1).

7. The anti-leakage ventilation fan according to claim 6, characterized in that, The upper end of the waterproof cover (5) is provided with an outward flange (51), and the outward flange (51) is provided with a connecting hole (52). The waterproof cavity (16) is provided with screw holes (18) around the connecting hole (52). The screw passes through the connecting hole (52) and is threadedly connected to the screw hole (18).

8. The anti-leakage ventilation fan according to claim 7, characterized in that, The edge of the outward flange (51) is provided with a sealing protrusion ring (53). The outward flange (51) abuts against the side wall of the waterproof cavity (16), and the sealing protrusion ring (53) wraps the side wall of the waterproof cavity (16).

9. The anti-leakage ventilation fan according to claim 8, characterized in that, The waterproof cavity (16) is formed by the upward protrusion of the inner surface of the housing (1).

10. The anti-leakage ventilation fan according to claim 9, characterized in that, A lower sealing ring (20) is provided between the clearance hole (54) and the motor shaft (31).

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