Air conditioning fan with air purification function

Abstract

The present invention discloses an air conditioning fan with air purification function, including a body shell, a water tank, a water evaporation carrier and a fan assembly, wherein the water tank is located at the lower part of the body shell, a first air outlet is provided on one side of the body shell, and a second air inlet is provided on the other side, the fan assembly is arranged near the first air outlet, the water evaporation carrier is arranged inside the second air inlet and is connected with the water tank, the body shell is also provided with a first air inlet, a filter device, a vent switching device and a cover device, the filter device is arranged near the inside of the first air inlet, the cover device is arranged at the first air outlet, the first air outlet is controlled to be opened in the use state, and the first air outlet is controlled to be closed in the idle state. The present invention adds a purification function to the traditional air conditioning fan function, so that the air blown out by the air conditioning fan is cleaner; it can be selected to be used as a separate purifier, which increases the use frequency of the product, is no longer a single seasonal product, and improves the use value of the product.

Description

Technical Field

[0001] The invention relates to the technical field of air conditioning devices, and in particular to an air conditioning fan with an air purification function. Background Art

[0002] The water evaporative air conditioning device (abbreviated as air conditioning fan) is a living environment appliance that regulates the temperature and humidity of the air. Its principle is that a water evaporation carrier is installed at the air inlet of the fan assembly. The fan drives the air through the water evaporation carrier, causing the water to vaporize at room temperature. The water evaporates and absorbs the heat of vaporization to cool the air. The unvaporized water flows back to the water tank for recycling. The cooled air is blown out through the air duct and the air outlet, giving people a cool feeling directly. Since the air conditioning fan does not use a compressor but only an ordinary fan, it has low energy consumption and low equipment cost. It is deeply loved by consumers in the hot summer and has become the preferred appliance for modern families. Traditional air conditioning fans have a single function and can only be used in hot summers, but cannot be used all year round, and have a single season of use. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides an air conditioning fan with an air purification function, which adds a purification function to the traditional air conditioning fan, so that the air blown out by the air conditioning fan is cleaner, and can be used alone as a purifier.

[0004] The present invention adopts the following technical solution:

[0005] An air conditioning fan with an air purification function comprises a body shell and a water tank, a water evaporation carrier and a fan assembly arranged in the body shell, the water tank is located at the lower part of the body shell, a first air outlet is provided on one side of the body shell, and a second air inlet is provided on the other side, the fan assembly is arranged close to the first air outlet, the water evaporation carrier is located on the inner side of the second air inlet and is connected to the water tank, the body shell is also provided with a first air inlet, a filter device for purifying air, a vent switching device and a cover device, the filter device is arranged close to the inner side of the first air inlet, the vent switching device divides the body shell into two upper and lower chambers, the first air inlet and the first air outlet are located on the upper side of the vent switching device The second air inlet is located below the vent switching device; the cover device is arranged at the first air outlet, controls the opening of the first air outlet in the use state, and controls the closing of the first air outlet in the idle state; when used as an air-conditioning fan, the vent switching device is opened, and the air sucked from the first air inlet and filtered and purified by the filter device is mixed with the air sucked from the second air inlet and cooled by the water evaporation carrier at the fan assembly to form mixed air, and the mixed air is blown out from the first air outlet; when used as a purifier, the vent switching device is closed, and the fan assembly blows the air sucked from the first air inlet and filtered and purified by the filter device directly out from the first air outlet.

[0006] The first air inlet is located at the top of the housing, and the filter device is located below the first air inlet and covers the first air inlet.

[0007] The side wall of the first air outlet extends toward the inner side thereof to form an air outlet with a guide surface; the outer side surface of the periphery of the cover plate device is in contact with the guide surface; the cover plate device includes a support plate frame, blades and a first transmission mechanism, the support plate frame is embedded in the first air outlet, and the outer side surface of the periphery is in contact with the guide surface; a plurality of blades are provided at the opening of the outer side surface of the support plate frame, and both ends of the blades are rotatably connected to the side walls of the support plate frame, and the first transmission mechanism is arranged on the inner side of the support plate frame and forms a control connection with each of the blades, and the opening and closing of the support plate frame opening are controlled by controlling the flipping of each of the blades.

[0008] A holder is fixed at both ends of each blade, and each holder is rotatably and fixedly connected to the corresponding side wall of the support plate frame; the first transmission mechanism includes a first drive motor, an eccentric shaft and a connecting rod, the first drive motor is arranged at the upper end of the inner side of the support plate frame, the eccentric shaft is arranged on the drive shaft of the first drive motor, one end of the connecting rod is sleeved on the eccentric shaft, and the other end of the connecting rod is fixedly connected to the holder located at one end of each blade, so as to control the opening and closing of the blade.

[0009] The side wall of the support plate frame is also provided with a second air outlet which is arranged perpendicular to the air outlet direction of the first air outlet, and the second air outlet is arranged close to the inner side of the blade. The support plate frame is also provided with a second transmission mechanism for controlling the cover plate device to move back and forth along the guide surface at the first air outlet; when used as an air-conditioning fan, the second transmission mechanism drives the cover plate device to move along the guide surface so that the second air outlet is in contact with the guide surface, the blades on the support plate frame are opened, and the air sucked in through the first air inlet and the second air inlet is mixed at the fan assembly and then blown out from the first air outlet; when used as a purifier, the second transmission mechanism drives the cover plate device to move along the guide surface so that the second air outlet extends out of the guide surface, the blades on the support plate frame are closed, and the air sucked in from the first air inlet is blown out from the second air outlet after passing through the first air outlet; when the air-conditioning fan stops working, the second air outlet on the cover plate device moves to the guide surface, and the blades are closed by driving the first transmission mechanism.

[0010] The second transmission mechanism includes a second drive motor, a gear and a rack. The second drive motor is located on the inner wall of the body shell above the first air outlet. The gear is set on the drive shaft of the second drive motor. One end of the rack is fixed to the inner wall of the upper part of the support plate frame and is perpendicular to the inner side surface of the support plate frame. The other end of the rack is meshed with the gear.

[0011] A lower water tank is provided above the water evaporation carrier, a water pump is provided in the water tank, and the lower water tank is connected to the water pump through a pipeline to provide a water source to be evaporated for the water evaporation carrier; the vent switching device is located between the fan assembly and the lower water tank.

[0012] The filter device is one of filter cloth, filter cotton, HEPA or activated carbon.

[0013] The technical solution of the present invention has the following advantages:

[0014] A. The air conditioning fan with air purification function of the present invention adds purification function to the traditional air conditioning fan, so that the air blown out by the air conditioning fan is cleaner; it can be selected to be used as a separate purifier, which increases the use frequency of the product, and is no longer a single seasonal product, thereby improving the use value of the product.

[0015] B. The air conditioning fan with air purification function of the present invention is provided with an air filter device on the top of the traditional air conditioning fan, and a vent switching device that can be opened and closed is provided between the lower end of the fan assembly and the water circulation system. A cavity is provided at the first air outlet on the shell of the body, and a cover device that can move forward and backward along the side wall is provided in the cavity. When used as an air conditioning fan, the cover device moves inward to the first air outlet, the blades on the support plate frame and the vent switching device are opened, and the fan assembly works to generate negative pressure inside the air conditioning fan, and external air is sucked in from the first air inlet at the top and the second air inlet at the lower end. The air sucked in by the first air inlet is filtered and purified by the filter device, and the air sucked in by the second air inlet is gasified and cooled by the water evaporation carrier, and then the two streams of purified and cooled air are mixed together and blown out from the first air outlet, thereby realizing the function of an air-conditioning fan with a purification function; when used as a purifier, the cover device moves away from the first air outlet, the blades and the vent switching device on the support plate frame are closed, the fan assembly works to generate negative pressure inside the air-conditioning fan, and the external air is sucked in from the first air inlet on the top, purified by the filter device, flows through the first air outlet, and is blown out from the second air outlet, thereby realizing the function of a purifier.

[0016] C. When the air conditioning fan with air purification function of the present invention is not in use, the cover plate device is moved inwardly to the first air outlet, and the blades on the support plate frame and the second air outlet are closed, thereby preventing dust and debris from entering the interior of the air conditioning fan, making it easy to store.

[0017] D. The various functions of the present invention can be automatically controlled, and the operation is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention, the drawings required for use in the specific embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of the air conditioning fan with air purification function provided by the present invention;

[0020] Figure 2 A cross-sectional view of an air conditioning fan with air purification function provided by the present invention;

[0021] Figure 3This is an axonometric diagram of the present invention when used as an air conditioning fan;

[0022] Figure 4 for Figure 3 Air flow cross-section diagram in the state (purification and cooling air);

[0023] Figure 5 This is an axonometric diagram of the present invention in use as a purifier;

[0024] Figure 6 for Figure 5 Air flow cross-section diagram in the state (purification);

[0025] Figure 7 It is a partial isometric cross-sectional view of the installation structure of the cover plate device and the housing in the present invention;

[0026] Figure 8 It is a schematic diagram of the structure of the cover plate device in the present invention;

[0027] Fig. 9 It is a schematic diagram of the structure of the vent switching device in the present invention.

[0028] The following are marked in the figure:

[0029] 1- Body shell

[0030] 11-guide surface, 12-first air inlet, 13-second air inlet, 14-first air outlet,

[0031] 15- water evaporation carrier, 16- filtering device, 17- lower water tank

[0032] 2- Cover device

[0033] 21-Support frame

[0034] 22-Blade

[0035] 221-Booth

[0036] 23- Second air outlet

[0037] 24-First transmission mechanism

[0038] 241-first drive motor, 242-eccentric shaft, 243-connecting rod

[0039] 25- Second transmission mechanism

[0040] 251- second drive motor, 252- gear, 253- rack

[0041] 3-Blower assembly

[0042] 4- Water tank

[0043] 5- Water Pump

[0044] 6-Ventilation switch

[0045] 61-including vent bracket, 62-vent blade, 63-blade connecting rod, 64-eccentric wheel,

[0046] 65- The third drive motor. DETAILED DESCRIPTION

[0047] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] like Figure 1-Figure 2As shown, the present invention provides an air conditioning fan with air purification function, including a body shell 1, a water tank 4 and a fan assembly 3 arranged in the body shell 1, the water tank 4 is located at the lower part of the body 1, the top of the body shell 1 is provided with a first air inlet 12, one side of the body shell 1 is provided with a first air outlet 14, and the other side is provided with a second air inlet 13, and the fan assembly 3 is arranged near the first air outlet 14. The body shell 1 is also provided with a filter device 16, a water evaporation carrier 15, a vent switching device 6 and a cover device 2, the filter device 16 is located below the first air inlet 12 and covers the first air inlet 12, the vent switching device 6 divides the body shell 1 into two upper and lower chambers, the first air outlet 14 is located above the vent switching device 6, the second air inlet 13 is located below the vent switching device 6, the water evaporation carrier 15 is located inside the second air inlet 13, and is connected to the water tank 4. The cover device 2 is arranged at the first air outlet 14, and controls the opening of the first air outlet 14 in the use state, and controls the closing of the first air outlet 14 in the idle state. The present invention adds a purification function to the traditional air conditioning fan function, so that the air blown out by the air conditioning fan is cleaner; it can be used as a separate purifier, which increases the frequency of use of the product, and is no longer a single seasonal product, thereby improving the use value of the product. When used as an air-conditioning fan, the vent switching device 6 is opened, and the fan assembly 3 works to generate negative pressure inside the air-conditioning fan. The air is sucked in from the first air inlet 12, filtered and purified by the filter device 16, and the air is sucked in from the second air inlet 13 and gasified and cooled by the water evaporation carrier 15, and mixed at the fan assembly 3, and the mixed air is blown out from the first air outlet 14, thereby realizing the function of an air-conditioning fan with a purification function; when used as a purifier, the vent switching device 6 is closed, and the fan assembly 3 works to generate negative pressure inside the air-conditioning fan, and the fan assembly 3 will suck in from the first air inlet 12, and the air is filtered and purified by the filter device 16 and blown out from the first air outlet 14, thereby realizing the function of purifying the air.

[0051] Furthermore, the side wall of the first air outlet 14 extends inwardly to form an air outlet having a guide surface 11; the outer side surface of the periphery of the cover plate device 2 is in contact with the guide surface 11. Figure 7 , Figure 8As shown, the cover plate device 2 includes a support plate frame 21, blades 22 and a first transmission mechanism 24. The support plate frame 21 is embedded in the first air outlet 14, and its peripheral outer side surface is in contact with the guide surface 11. A plurality of blades 22 are provided at the opening of the outer side surface of the support plate frame 21, and both ends of the blades 21 are rotatably connected to the side walls of the support plate frame 21. The first transmission mechanism 24 is arranged on the inner side of the support plate frame 21, and forms a control connection with each blade 21, and controls the opening and closing of the support plate frame 21 by controlling the flipping of each blade 22. A holder 221 is fixed at both ends of each blade 22, and each holder 221 is rotatably and fixedly connected to the side wall of the corresponding support plate frame 21. The first transmission mechanism 24 can select a transmission structure such as a gear transmission, a connecting rod transmission, etc., such as Figure 8 As shown, in this embodiment, the first transmission mechanism 24 selects a connecting rod transmission mechanism, which specifically includes a first drive motor 241, an eccentric shaft 242 and a connecting rod 243. The first drive motor 241 is arranged at the upper end of the inner side of the support plate frame 21, and the eccentric shaft 242 is arranged on the drive shaft of the first drive motor 241. One end of the connecting rod 243 is mounted on the eccentric shaft 242, and the other end thereof is fixedly connected to the holder 221 located at one end of each blade 22, so as to control the opening and closing of the blade 22.

[0052] A second air outlet 23 is also provided on the side wall of the support plate frame 21 and is arranged perpendicular to the air outlet direction of the first air outlet 14. The second air outlet 23 is arranged close to the inner side of the blade 22. A second transmission mechanism 25 is also provided on the support plate frame 21 for controlling the cover device 2 to move forward and backward along the guide surface 11 at the first air outlet 14.

[0053] When used as an air conditioning fan, Figure 3 , Figure 4 As shown, the second transmission mechanism 25 drives the cover device 2 to move along the guide surface 11, so that the second air outlet 23 is in contact with the guide surface 11, and the blades 22 on the support frame 21 are opened. The air sucked in through the first air inlet 12 and the second air inlet 17 is mixed at the fan assembly 3 and then blown out from the first air outlet 14, realizing the function of an air conditioning fan with a purification function. When used as a purifier, Figure 5 , Figure 6 As shown, the second transmission mechanism 2 drives the cover device 2 to move along the guide surface 11, so that the second air outlet 23 extends out of the guide surface 11, and the blades 22 on the support frame 21 are closed, and the air sucked from the first air inlet 12 is blown out from the second air outlet 23 after passing through the first air outlet 14, thereby achieving the function of purifying the air. Figure 1 , Figure 2 As shown, the second air outlet 23 on the cover device 2 is moved to the guide surface 11, and the blade 22 is closed by driving the first transmission mechanism 24, which can prevent dust and debris from entering the interior of the air-conditioning fan, making it easy to store.

[0054] The second transmission mechanism 25 can be a transmission structure such as gear transmission, worm transmission, cam transmission, etc. Figure 7 As shown, in this embodiment, the second transmission mechanism 25 adopts a gear transmission mechanism, which specifically includes a second drive motor 251, a gear 252 and a rack 253. The second drive motor 251 is located on the inner wall of the body shell 1 above the first air outlet 14, and the gear 252 is arranged on the drive shaft of the second drive motor 251. One end of the rack 253 is fixed on the upper inner wall of the support plate frame 21 and is perpendicular to the inner side surface of the support plate frame 21, and the other end of the rack 253 is meshed with the gear 252.

[0055] In addition, if Figure 2 As shown, a lower water tank 17 is provided above the water evaporation carrier 15, a water pump 5 is provided in the water tank 4, and the lower water tank 17 is connected to the water pump 5 through a pipeline to provide a water source to be evaporated for the water evaporation carrier 15; the vent switching device 6 is located between the fan assembly 3 and the lower water tank 17.

[0056] The filter device 16 can be selected from one of filter cloth, filter cotton, HEPA or activated carbon. The fan assembly 3 is a common centrifugal fan with two air inlet ends and one air outlet end, wherein the two air inlet ends correspond to the first air inlet 12 and the second air inlet 13 respectively, and the air outlet end corresponds to the first air outlet 14. The vent switching device 6 is a conventional switching device with blades and can realize automatic opening and closing of the vent by opening and closing the blades, including a vent bracket 61, a vent blade 62, a blade connecting rod 63, The eccentric wheel 64 and the third drive motor 65, both ends of the vent blade 62 are rotatably connected to the side wall of the vent bracket 61, the third drive motor 65 is arranged on the end of the vent switching device 6 close to the second air inlet 17, the eccentric wheel 64 is arranged on the drive shaft of the third drive motor 65, one end of the blade connecting rod 63 is sleeved on the eccentric wheel 64, and the other end thereof is fixedly connected to one end of each vent blade 62, and the vent switching device 6 is automatically opened and closed by controlling the flipping of each vent blade 62, such as Fig. 9 shown.

[0057] Specific use: when used as an air-conditioning fan, the second transmission mechanism drives the cover plate device to move to the first air outlet, the blades and the vent switching device on the side of the support plate frame are opened, and the fan assembly works to generate negative pressure inside the air-conditioning fan, and the external air is sucked in from the first air inlet and the second air inlet. The air sucked in from the first air inlet is filtered and purified by the filter device, and the air sucked in from the second air inlet is gasified and cooled by the water evaporation carrier, and then the two purified and cooled air are mixed together and blown out from the first air outlet, realizing the function of an air-conditioning fan with purification function. Figure 4 .

[0058] When used as a purifier, the second transmission mechanism drives the cover plate device to move away from the first air outlet, the blades on the side of the support plate frame and the vent switching device are closed, the second air outlet is opened, and the fan assembly works to generate negative pressure inside the air-conditioning fan. External air is sucked in from the first air inlet, purified by the filter device, flows through the first air outlet, and is blown out from the second air outlet, realizing the function of purifying air. Figure 6 .

[0059] When the air conditioning fan is not in use, the cover device moves inward to the first air outlet, the second air outlet is closed, and the blades on the side of the support plate frame are also closed by driving the first transmission mechanism. At this time, dust and debris can be prevented from entering the interior of the air conditioning fan, which is convenient for storage. Figure 2 .

[0060] The various functions of the present invention can be automatically controlled, and the operation is simple and the use is convenient.

[0061] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, the obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. An air conditioning fan with an air purification function, comprising a housing (1) and a water tank (4), a water evaporation carrier (15) and a fan assembly (3) arranged in the housing (1), wherein the water tank (4) is located at the lower part of the housing (1), a first air outlet (14) is arranged on one side of the housing (1), and a second air inlet (13) is arranged on the other side of the housing (1), the fan assembly (3) is arranged close to the first air outlet (14), the water evaporation carrier (15) is located on the inner side of the second air inlet (13) and is connected to the water tank (4), characterized in that: The housing (1) is also provided with a first air inlet (12), a filter device (16) for purifying air, a vent switching device (6) and a cover device (2); the filter device (16) is arranged close to the inner side of the first air inlet (12); the vent switching device (6) divides the housing (1) into two upper and lower chambers; the first air inlet (12) and the first air outlet (14) are located above the vent switching device (6); the second air inlet (13) is located below the vent switching device (6); the cover device (2) is arranged at the first air outlet (14); in a use state, the first air outlet (14) is controlled to be opened; in an idle state, the first air outlet (14) is controlled to be closed; When used as an air conditioning fan, the vent switching device (6) is turned on, and the air sucked from the first air inlet (12) and filtered and purified by the filter device (16) is mixed with the air sucked from the second air inlet (13) and gasified and cooled by the water evaporation carrier (15) at the fan assembly (3) to form mixed air, and the mixed air is blown out from the first air outlet (14); when used as a purifier, the vent switching device (6) is turned off, and the fan assembly (3) blows the air sucked from the first air inlet (12) and filtered and purified by the filter device (16) directly out from the first air outlet (14); The side wall of the first air outlet (14) extends toward the inside thereof to form an air outlet having a guide surface (11); the peripheral outer side surface of the cover plate device (2) is in contact with the guide surface (11); the cover plate device (2) comprises a support plate frame (21), blades (22) and a first transmission mechanism (24); the support plate frame (21) is embedded in the first air outlet (14), and the peripheral outer side surface of the support plate frame (21) is in contact with the guide surface (11); a plurality of blades (22) are provided at the opening of the outer side surface of the support plate frame (21), and the two ends of the blades (22) are rotatably connected to the side wall of the support plate frame (21); the first transmission mechanism (24) is arranged on the inner side of the support plate frame (21) and forms a control connection with each blade (22), and controls the opening and closing of the opening of the support plate frame (21) by controlling the flipping of each blade (22); A second air outlet (23) is also provided on the side wall of the support plate frame (21) and is arranged perpendicular to the air outlet direction of the first air outlet (14); the second air outlet (23) is arranged close to the inner side of the blade (22); and a second transmission mechanism (25) is also provided on the support plate frame (21) for controlling the cover plate device (2) to move forward and backward along the guide surface (11) at the first air outlet (14); When used as an air conditioning fan, the second transmission mechanism (25) drives the cover plate device (2) to move along the guide surface (11), so that the second air outlet (23) is in contact with the guide surface (11), the blades (22) on the support plate frame (21) are opened, and the air sucked in through the first air inlet (12) and the second air inlet (13) is mixed at the fan assembly (3) and then blown out from the first air outlet (14); when used as a purifier, the second transmission mechanism (25) drives the cover plate device (2) to move along the guide surface (11), so that the second air outlet (23) is in contact with the guide surface (11), and the blades (22) on the support plate frame (21) are opened. ) moves along the guide surface (11) so that the second air outlet (23) extends out of the guide surface (11), the blades (22) on the support frame (21) are closed, and the air sucked from the first air inlet (12) passes through the first air outlet (14) and is blown out from the second air outlet (23); when the air conditioning fan stops working, the second air outlet (23) on the cover device (2) moves to a position aligned with the guide surface (11), and the blades (22) are closed by driving the first transmission mechanism (24).

2. The air conditioning fan with air purification function according to claim 1, characterized in that: The first air inlet (12) is located at the top of the housing (1), and the filter device (16) is located below the first air inlet (12) and covers the first air inlet (12).

3. The air conditioning fan with air purification function according to claim 2, characterized in that: A holder (221) is fixed at both ends of each blade (22), and each holder (221) is rotatably and fixedly connected to the corresponding side wall of the support plate frame (21); the first transmission mechanism (24) comprises a first drive motor (241), an eccentric shaft (242) and a connecting rod (243); the first drive motor (241) is arranged at the upper end of the inner side of the support plate frame (21), the eccentric shaft (242) is arranged on the drive shaft of the first drive motor (241), one end of the connecting rod (243) is sleeved on the eccentric shaft (242), and the other end thereof is fixedly connected to the holder (221) located at one end of each blade (22), so as to control the opening and closing of the blade (22).

4. The air conditioning fan with air purification function according to claim 1, characterized in that: The second transmission mechanism (25) comprises a second drive motor (251), a gear (252) and a rack (253); the second drive motor (251) is located on the inner wall of the machine body shell (1) above the first air outlet (14); the gear (252) is arranged on the drive shaft of the second drive motor (251); one end of the rack (253) is fixed on the upper inner wall of the support plate frame (21) and is perpendicular to the inner side surface of the support plate frame (21); the other end of the rack (253) is meshed with the gear (252).

5. The air conditioning fan with air purification function according to claim 1, characterized in that: A lower water tank (17) is provided above the water evaporation carrier (15); a water pump (5) is provided in the water tank (4); the lower water tank (17) is connected to the water pump (5) through a pipeline to provide a water source to be evaporated for the water evaporation carrier (15); and the vent switching device (6) is located between the fan assembly (3) and the lower water tank (17).

6. The air conditioning fan with air purification function according to claim 1, characterized in that: The filtering device (16) is one of filter cloth, filter cotton, HEPA or activated carbon.

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