Waterproof exhaust fan

Abstract

The utility model discloses a waterproof exhaust fan which comprises a fan and a waterproof cover. The waterproof cover is installed at the front section of the fan, the shell is installed on the outer side of the fan, the protective cover is installed in the shell through the installation frame, the second motor is installed in the protective cover, the fan blades are installed at the front end of the second motor, and the air inlet is formed in the front end of the waterproof cover. A plurality of louver boards are rotatably installed on the upper side of the air inlet, one end of each louver board extends into the waterproof cover and is provided with a driven belt pulley, a first motor is installed at the upper end of the waterproof cover, and a driving belt pulley is installed at the front end of the first motor; and the driven belt pulley is connected with the driving belt pulley and the driven belt pulley through belts. When the fan is not used, the first motor can drive the turning plate to rotate, the air inlet is closed, and water vapor is prevented from entering the fan to affect the fan when the fan is not used.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust fans, in particular to a waterproof exhaust fan. Background Art

[0002] Exhaust fan is a kind of air conditioning appliance that uses a motor to drive the fan blades to rotate and drive the air flow to exchange indoor and outdoor air. It is also called a ventilation fan. The purpose of exhaust is to remove the dirty air in the room and adjust the temperature, humidity and sensory effect. Exhaust fans are widely used in homes and public places.

[0003] Chinese patent number CN201620540993.6 discloses an exhaust fan, including a housing, a motor, a fan blade and a mounting frame, wherein the motor is connected to the fan blade in a transmission manner, the motor is arranged on the mounting frame, the motor, the fan blade and the mounting frame are all located inside the housing, and the mounting frame is detachably connected to the housing. In the prior art, the front end of the exhaust fan is in a normally open state during use, and when the air is humid, moisture is easily condensed inside the exhaust fan, causing corrosion to the exhaust fan. Utility Model Content

[0004] The utility model aims to provide a waterproof exhaust fan to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waterproof exhaust fan, comprising a fan and a waterproof cover; the waterproof cover is installed at the front section of the fan, an outer shell is installed on the outside of the fan, a protective cover is installed inside the outer shell, the protective cover is installed inside the outer shell through a mounting frame, a second motor is installed inside the protective cover, a fan blade is installed at the front end of the second motor, an air inlet is arranged at the front end of the waterproof cover, a plurality of louvers are rotatably installed on the upper side of the air inlet, one end of the louver extends into the waterproof cover and a driven pulley is installed, a first motor is installed at the upper end of the waterproof cover, a driving pulley is installed at the front end of the first motor, and the driven pulley and the driving pulley and the driven pulley are all connected by belts.

[0006] Preferably, an insect-proof net is provided at the rear end of the shell, and the insect-proof net is fixedly installed at the rear end of the shell by bolts.

[0007] Preferably, heat conducting plates are arranged around the protective cover, and the heat conducting plates extend into the inner position of the heat conducting plate.

[0008] Preferably, a corrosion-resistant layer is provided on the outer side of the louver, and the corrosion-resistant layer is provided as a corrosion-resistant coating layer.

[0009] Preferably, a self-cleaning layer is provided on the outer side of the corrosion-resistant layer, and the self-cleaning layer is provided as a nano-silicon coating layer.

[0010] Preferably, a drying box is provided at the rear end of the protective cover, and the drying box is filled with desiccant.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. When not in use, the first motor will drive the flap to rotate and close the air inlet to prevent water vapor from entering the fan and affecting the fan when not in use;

[0013] 2. The setting of the insect-proof net can prevent mice and insects from entering the fan when not in use and causing damage to the fan;

[0014] 3. The corrosion-resistant coating layer used in the corrosion-resistant layer can not only make the outer surface of the flap more beautiful, but also reduce the corrosion of the flap during use;

[0015] 4. The drying box is used to dry the inside of the installation box to ensure the dryness of the working environment of the second motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a rear view structural schematic diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the waterproof cover of the utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the fan of the utility model.

[0021] In the figure: 1. fan; 2. casing; 3. waterproof cover; 4. air inlet; 5. louver; 6. first motor; 7. driving pulley; 8. driven pulley; 9. self-cleaning layer; 10. corrosion-resistant layer; 11. protective cover; 12. mounting frame; 13. heat conduction plate; 14. insect-proof net; 15. second motor; 16. fan blades; 17. drying box. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 In the embodiment of the utility model, a waterproof exhaust fan comprises a fan 1 and a waterproof cover 3; the waterproof cover 3 is installed at the front section of the fan 1, a shell 2 is installed on the outside of the fan 1, a protective cover 11 is installed inside the shell 2, the protective cover 11 is installed inside the shell 2 through a mounting frame 12, a second motor 15 is installed inside the protective cover 11, a fan blade 16 is installed at the front end of the second motor 15, an air inlet 4 is arranged at the front end of the waterproof cover 3, a plurality of louvers 5 are rotatably installed on the upper side of the air inlet 4, one end of the louver 5 extends into the waterproof cover 3 and a driven pulley 8 is installed, a first motor 6 is installed at the upper end of the waterproof cover 3, a driving pulley 7 is installed at the front end of the first motor 6, and the driven pulley 8 and the driving pulley 7 and the driven pulley 8 are all connected by belts.

[0024] An insect-proof net 14 is provided at the rear end of the housing 2 and is fixedly installed at the rear end of the housing 2 by bolts. The setting of the insect-proof net 14 can prevent mice and insects from entering the fan 1 when not in use and causing damage to the fan 1.

[0025] The protective cover 11 is provided with heat conducting plates 13 around it, and the heat conducting plates 13 extend into the inner position of the heat conducting plates 13. The setting of the heat conducting plates 13 can quickly conduct the heat generated by the second motor 15 when in use, and cool the second motor 15 through the flowing airflow. A drying box 17 is provided at the rear end of the protective cover 11, and the drying box 17 is filled with desiccant. The setting of the drying box 17 is used to dry the inside of the installation box to ensure the dryness of the working environment of the second motor 15.

[0026] A corrosion-resistant layer 10 is arranged on the outside of the louver 5, and the corrosion-resistant layer 10 is arranged as a corrosion-resistant paint layer. The corrosion-resistant paint layer used in the corrosion-resistant layer 10 can not only make the outer surface of the flap more beautiful, but also reduce the corrosion of the flap during use; a self-cleaning layer 9 is arranged on the outside of the corrosion-resistant layer 10, and the self-cleaning layer 9 is arranged as a nano-silicon paint layer. The nano-silicon paint layer used in the self-cleaning layer 9 has strong hydrophobicity and dust-difficult adhesion properties, and can keep the outer surface of the flap clean for a long time.

[0027] The working principle and use process of the utility model are as follows: when in use, the first motor 6 and the second motor 15 are turned on by the switch, the second motor 15 will drive the fan blades 16 to rotate, and at the same time the first motor 6 will drive the driving pulley 7 to rotate, the driving pulley 7 will drive the driven pulley 8 to rotate through the belt, thereby driving the flap to rotate and opening the air inlet 4; when not in use, the first motor 6 will drive the flap to rotate and close the air inlet 4 to prevent water vapor from entering the inside of the fan 1 and affecting the fan 1 when not in use.

[0028] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A waterproof exhaust fan, comprising a fan (1) and a waterproof cover (3); characterized in that: The waterproof cover (3) is installed at the front section of the fan (1); a shell (2) is installed on the outside of the fan (1); a protective cover (11) is installed inside the shell (2); the protective cover (11) is installed inside the shell (2) through a mounting frame (12); a second motor (15) is installed inside the protective cover (11); a fan blade (16) is installed at the front end of the second motor (15); an air inlet (4) is arranged at the front end of the waterproof cover (3); a plurality of louvers (5) are rotatably installed on the upper side of the air inlet (4); one end of the louver (5) extends into the waterproof cover (3) and is installed with a driven pulley (8); a first motor (6) is installed at the upper end of the waterproof cover (3); a driving pulley (7) is installed at the front end of the first motor (6); the driven pulley (8) is connected to the driving pulley (7) and the driven pulley (8) by a belt.

2. A waterproof exhaust fan according to claim 1, characterized in that: An insect-proof net (14) is provided at the rear end of the housing (2), and the insect-proof net (14) is fixedly installed at the rear end of the housing (2) by means of bolts.

3. The waterproof exhaust fan according to claim 1, characterized in that: The protective cover (11) is provided with a heat conducting plate (13) around it, and the heat conducting plate (13) extends into the inner position of the heat conducting plate (13).

4. The waterproof exhaust fan according to claim 1, characterized in that: A corrosion-resistant layer (10) is arranged on the outer side of the louver plate (5), and the corrosion-resistant layer (10) is arranged as a corrosion-resistant coating layer.

5. A waterproof exhaust fan according to claim 4, characterized in that: A self-cleaning layer (9) is arranged outside the corrosion-resistant layer (10), and the self-cleaning layer (9) is arranged as a nano-silicon coating layer.

6. The waterproof exhaust fan according to claim 1, characterized in that: A drying box (17) is provided at the rear end of the protective cover (11), and the interior of the drying box (17) is filled with a desiccant.

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