Air supply device and cooling fan

Abstract

The utility model relates to an air supply device and a cooling fan. The air supply device comprises a first mounting frame, an air outlet assembly and a fan assembly. The first end of the first mounting frame is connected to a supporting structure of the cooling fan, and a first air inlet is formed in the first mounting frame; the air outlet assembly comprises an air guide part and a protective cover which are connected, the air guide part is rotationally connected to the first mounting frame, the protective cover is arranged on the air guide part in a sleeving mode, the protective cover is movably connected with the second end of the first mounting frame, and an air outlet is formed in the protective cover; the fan assembly is used for driving airflow to circulate in the direction from the first air inlet to the air outlet through the air guide piece. According to the cooling fan, the first end of the first mounting frame is connected to the supporting structure of the cooling fan, and the second end of the first mounting frame is movably connected with the protective cover, so that the first end and the second end of the first mounting frame are both supported, inclination or expansion of the first mounting frame is restrained, and the protective cover rotates more stably and smoothly relative to the first mounting frame; and the overall operation stability of the air supply device is improved.

Description

Technical Field

[0001] The present application relates to the field of fans, and in particular to an air supply device and a cooling fan. Background Art

[0002] With the continuous development of society and the advancement of technology, the number of complex products in the home appliance market is increasing. A cooling fan, also known as an air conditioning fan, is a cooling device that is a cross between a fan and an air conditioner, combining air supply, cooling, and humidification. The cooling fan uses a water pump to pump water from a tank onto a wet curtain. As air passes through the wet curtain, it picks up moisture, absorbing heat through evaporation, achieving both cooling and humidification.

[0003] In the prior art, a cooling fan includes an air duct assembly and a support ring for supporting the duct assembly. The lower end of the support ring is fixed to the base, while the upper end is open and has no fixed method. During use, the left and right support rings are prone to tilting or expanding, which not only affects the cooling fan's performance but also may cause components to fall off and even cause injury to the user. Utility Model Content

[0004] The purpose of this application is to provide an air supply device and a cooling fan to solve the problem in the related art that the support ring is prone to tilting or expanding, affecting the use effect of the cooling fan.

[0005] To achieve the purpose of this application, this application provides the following technical solutions:

[0006] In a first aspect, the present application provides an air supply device for a cooling fan, the air supply device comprising:

[0007] a first mounting bracket, wherein a first end of the first mounting bracket is connected to the support structure of the cooling fan, and a first air inlet is provided on the first mounting bracket;

[0008] An air outlet assembly, comprising an air guide member and a protective cover connected to each other, wherein the air guide member is rotatably connected to the first mounting bracket, the protective cover is sleeved on the air guide member, and the protective cover is provided with an air outlet;

[0009] The fan assembly is used to drive the air flow to flow in the direction from the first air inlet through the air guide to the air outlet.

[0010] In one embodiment, the protective cover is movably connected to the second end of the first mounting bracket via a first fixing assembly, the first fixing assembly comprising a first fixing seat, a second fixing seat, and a rolling element, the first fixing seat being connected to the second end of the first mounting bracket, the second fixing seat being connected to the protective cover, and the rolling element being rollingly connected between the first fixing seat and the second fixing seat;

[0011] The second fixing seat rotates around the rotation axis of the air guide member to drive the rolling member to roll relative to the first fixing seat.

[0012] In one embodiment, the first fixing seat and the second fixing seat are both arranged in a ring shape, a first mounting surface is provided on the first mounting frame, and a second mounting surface is provided on the protective cover. The first mounting surface and the second mounting surface are both arranged along the circumference of the rotation axis of the air guide member, the first fixing seat is connected to the first mounting surface, and the second fixing seat is connected to the second mounting surface.

[0013] In one embodiment, in the extension direction of the rotation axis of the air guide member, the first mounting surface is arranged on one side of the first mounting frame, the second mounting surface is arranged on one side of the protective cover, and the first mounting surface extends into the protective cover, and the first fixing seat and the rolling member are located in the protective cover.

[0014] In one embodiment, a first slide groove is provided on the first fixed seat, a second slide groove is provided on the second fixed seat, an opening of the first slide groove is opposite to an opening of the second slide groove, and the rolling element is movably arranged in the first slide groove and the second slide groove.

[0015] In one embodiment, the first fixing assembly further includes a support seat, which is disposed between the first fixing seat and the second fixing seat. A limiting hole is provided on the support seat, and the rolling element is movably disposed in the limiting hole.

[0016] In one embodiment, a plurality of the rolling members are provided, and the plurality of the rolling members are arranged at circumferential intervals along the rotation axis of the air guide member. A plurality of the limiting holes are provided, and the plurality of the limiting holes are arranged in a one-to-one correspondence with the plurality of the rolling members.

[0017] In one embodiment, the air supply device further includes a first motor, a first motor slot is provided on the first mounting frame, the first motor is disposed in the first motor slot, and an output shaft of the first motor is transmission-connected to the air guide member.

[0018] In one embodiment, the air supply device further includes a second mounting bracket and a second fixing assembly, wherein a first end of the second mounting bracket is connected to the support structure of the cooling fan, the air outlet assembly is arranged between the first mounting bracket and the second mounting bracket, and a second air inlet is provided on the second mounting bracket;

[0019] The second end of the second mounting bracket is movably connected to the protective cover via the second fixing assembly.

[0020] In one embodiment, the first fixing component and the second fixing component are symmetrically arranged.

[0021] In one embodiment, a second motor slot is provided on the second mounting frame, and the fan assembly includes a second motor and centrifugal fan blades. The second motor is arranged in the second motor slot, and the output shaft of the second motor is transmission-connected to the centrifugal fan blades.

[0022] In the second aspect, the present application also provides a cooling fan, comprising an air supply device described in any one of the various embodiments of the first aspect, the first end of the first mounting frame is connected to the support frame, and the wet curtain is installed on the side of the first mounting frame away from the air outlet assembly.

[0023] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0024] The air supply device provided in the embodiment of the present application has a fan assembly for driving airflow in a direction from a first air inlet through an air guide to an air outlet. The air guide is rotatably connected to a first mounting frame, and a protective cover is mounted on the air guide, so that the air outlet assembly as a whole can rotate relative to the first mounting frame to adjust the air outlet direction of the air supply device. The first end of the first mounting frame is connected to the support structure of the cooling fan, and the second end of the first mounting frame is movably connected to the protective cover so that both the first end and the second end of the first mounting frame can be supported. This not only prevents the first mounting frame from tilting or expanding during use, but also makes the rotation of the protective cover relative to the first mounting frame more stable and smooth, reduces the deformation of the first mounting frame and the protective cover, improves the stability of the overall operation of the air supply device, and enhances the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0028] Figure 1 A cross-sectional view of a cooling fan provided in an embodiment of the present application;

[0029] Figure 2 for Figure 1 Schematic diagram of part of the structure shown;

[0030] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0031] Figure 4 An exploded view of a portion of the structure of the air supply device provided in an embodiment of the present application;

[0032] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0033] Figure 6 for Figure 4 A partial enlarged view of point C in the middle;

[0034] Figure 7 for Figure 4 A partial enlarged view of point D in the middle;

[0035] Figure 8 A schematic structural diagram of a first fixing assembly provided in an embodiment of the present application;

[0036] Figure 9 A schematic structural diagram of the rolling element and support seat provided in an embodiment of the present application.

[0037] Description of reference numerals:

[0038] 100, support frame;

[0039] 200, wet curtain;

[0040] 300, first mounting frame; 310, first air inlet; 320, first mounting surface; 330, first motor slot;

[0041] 400, air outlet assembly; 410, air guide; 411, air duct opening; 420, protective cover; 421, air outlet; 422, second mounting surface;

[0042] 500, fan assembly; 510, second motor; 520, centrifugal fan blade;

[0043] 600, first fixing assembly; 610, first fixing seat; 611, first chute; 620, second fixing seat; 621, second chute; 630, rolling element; 640, supporting seat; 641, limiting hole;

[0044] 710, first motor; 720, second mounting bracket; 721, second motor slot; 730, second fixing assembly;

[0045] 800. Air inlet grille. DETAILED DESCRIPTION

[0046] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0047] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, these are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0048] For ease of description, spatially relative terms may be used herein to describe the relative position or movement of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," "above," "front," "back," and the like. Such spatially relative terms are intended to include different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figures undergoes a positional flip or a change in posture or a change in motion, then these directional indications will also change accordingly. For example, an element described as "below" or "below" another element or feature will subsequently be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein will be interpreted accordingly.

[0049] refer to Figures 1 to 9 The present invention provides a cooling fan comprising a support frame 100, a wet curtain 200, and an air supply device. The support frame 100 serves as the overall support structure for the cooling fan and can be supported on a support surface such as the ground or a tabletop. The air supply device is mounted on the support frame 100 at a certain height from the support surface. The wet curtain 200 is mounted within the air supply device. The cooling fan lowers the air temperature by passing air through the wet curtain 200, thereby enhancing the cooling effect.

[0050] The air supply device of the embodiment of the present application is introduced in detail below.

[0051] refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The embodiment of the present application provides an air supply device for a cooling fan. It should be understood that the air supply device provided in the embodiment of the present application can also be used in equipment such as a blower and an air supply fan of an air conditioning system.

[0052] The air supply device includes a first mounting bracket 300, an air outlet assembly 400, a fan assembly 500, and a first fixing assembly 600. The air supply device achieves air flow and circulation through the fan assembly 500. The air supply device is integrated with the wet curtain 200. When the airflow generated by the air supply device passes through the wet curtain 200, the moisture on the wet curtain 200 evaporates and absorbs heat, thereby lowering the air temperature and achieving the effect of cooling and humidifying.

[0053] The first end of the first mounting bracket 300 is connected to the support structure of the cooling fan, wherein the support bracket 100 serves as the support structure of the cooling fan, that is, the first end of the first mounting bracket 300 is connected to the support bracket 100. Figure 1 As shown, the support frame 100 can be roughly rod-shaped, with the bottom of the support frame 100 supported on a support surface such as the ground or a table. The first end and the second end of the first mounting frame 300 are the two ends of the support frame 100 in the height direction, and the first end of the first mounting frame 300 is connected to the top of the support frame 100. A first air inlet 310 is provided on the first mounting frame 300 to allow air to pass through.

[0054] The air outlet assembly 400 includes an air guide 410 and a protective cover 420. The air guide 410 is rotatably connected to the first mounting frame 300, and the protective cover 420 is mounted on the air guide 410. The protective cover 420 is movably connected to the second end of the first mounting frame 300, which is the end of the first mounting frame 300 that is away from the support frame 100 in the height direction. The protective cover 420 prevents hands from touching the interior of the air guide 410, providing safety protection. The air guide 410 and the protective cover 420 can be separate structures, with the air outlet assembly 400 connected to the first mounting frame 300 via the air guide 410; or the air guide 410 and the protective cover 420 can be an integrated structure.

[0055] The protective cover 420 is provided with an air outlet 421, allowing air to pass through the protective cover 420 and be discharged. The air guide 410 is used to guide the air entering from the first air inlet 310 to the air outlet 421. When the air guide 410 rotates, the protective cover 420 rotates with the air guide 410, thereby allowing the entire air outlet assembly 400 to rotate relative to the first mounting bracket 300 to adjust the air outlet direction of the air supply device.

[0056] The fan assembly 500 is used to drive the airflow to flow along the direction from the first air inlet 310 through the air guide 410 to the air outlet 421. The fan assembly 500 is the main driving structure for driving the airflow in the air outlet device. The fan assembly 500 can include a motor and an impeller, and the impeller is driven to rotate by the motor.

[0057] The air supply device provided in the embodiment of the present application fixes the first end of the first mounting frame 300 on the supporting structure of the cooling fan, and the second end of the first mounting frame 300 is movably connected to the protective cover 420 so that both the first end and the second end of the first mounting frame 300 can be supported. This not only prevents the first mounting frame 300 from tilting or expanding during use, but also makes the rotation of the protective cover 420 relative to the first mounting frame 300 more stable and smooth, reduces the deformation of the first mounting frame 300 and the protective cover 420, improves the stability of the overall operation of the air supply device, and enhances the user experience.

[0058] refer to Figures 2 to 9 The second end of the first mounting frame 300 and the protective cover 420 are movably connected via a first fixing assembly 600. The first fixing assembly 600 includes a first fixing seat 610, a second fixing seat 620, and a rolling member 630. The first fixing seat 610 is connected to the second end of the first mounting frame 300, the second fixing seat 620 is connected to the protective cover 420, and the rolling member 630 is rollingly connected between the first fixing seat 610 and the second fixing seat 620. The second fixing seat 620 rotates around the rotation axis of the air guide 410 to drive the rolling member 630 to roll relative to the first fixing seat 610. In the embodiment of the present application, the first fixing seat 610 and the second fixing seat 620 are connected to the second end of the first mounting frame 300 and the protective cover 420, respectively. This design ensures a stable connection between the key components of the air supply device and effectively prevents loosening or displacement due to vibration or external force. The rolling element 630 not only connects the first fixing base 610 and the second fixing base 620, but also enables the second fixing base 620 to rotate relative to the first fixing base 610 about the rotation axis of the air guide 410. Furthermore, the rolling element 630 fills the gap between the first mounting bracket 300 and the protective cover 420. The first fixing assembly 600 not only enables relative movement between the first mounting bracket 300 and the protective cover 420, but also reduces frictional resistance through the rolling friction of the rolling element 630, thereby improving the overall stability and reliability of the air supply device.

[0059] For example, the first fixing seat 610 can be set only at the second end of the first mounting frame 300, and the second fixing seat 620 can be set on the protective cover 420 along the circumference of the rotation axis of the air guide member 410. Through the cooperation of the first fixing seat 610, the rolling member 630 and the second fixing seat 620, the rotational cooperation between the second end of the first mounting frame 300 and the protective cover 420 can be achieved, thereby improving the stability of the first mounting frame 300.

[0060] In one embodiment, the first fixing seat 610 and the second fixing seat 620 are both arranged in an annular shape. When the first fixing seat 610 and the second fixing seat 620 are connected, not only the structural stability of the air supply device is enhanced, but also the entire device is more stable during operation. The first mounting frame 300 is provided with a first mounting surface 320, and the protective cover 420 is provided with a second mounting surface 422. The first mounting surface 320 and the second mounting surface 422 are both arranged along the circumference of the rotation axis of the air guide 410. The first fixing seat 610 is connected to the first mounting surface 320, and the second fixing seat 620 is connected to the second mounting surface 422. The first mounting surface 320 and the second mounting surface 422 are both arranged along the circumference of the rotation axis of the air guide 410, so that the connection between the first fixing seat 610 and the first mounting surface 320, and between the second fixing seat 620 and the second mounting surface 422 is tighter, further enhancing the overall stability of the device.

[0061] Threaded holes may be provided on the first mounting surface 320 and the second mounting surface 422 so that the first fixing seat 610 and the first mounting surface 320 , and the second fixing seat 620 and the second mounting surface 422 are connected via threaded fasteners.

[0062] In the direction of the rotation axis of the air guide 410, the first mounting surface 320 is located on one side of the first mounting frame 300, and the second mounting surface 422 is located on one side of the protective cover 420, facilitating the installation of the first fixing seat 610 and the second fixing seat 620. Furthermore, the first mounting surface 320 extends into the protective cover 420, and the first fixing seat 610 and the rolling element 630 are located within the protective cover 420. This makes the internal structure of the air supply device more compact, effectively protects these components from interference and damage from the external environment, and also makes the entire device more neat and beautiful in appearance. Furthermore, the first mounting surface 320 extends into the protective cover 420, and the second mounting surface 422 is located on one side of the first mounting frame 300. This allows the rolling element 630 to be stably clamped between the first fixing seat 610 and the second fixing seat 620 after installation, further preventing tilting or expansion between the first mounting frame 300 and the protective cover 420.

[0063] In one embodiment, a first slide groove 611 is provided on the first fixing seat 610, and a second slide groove 621 is provided on the second fixing seat 620. The opening of the first slide groove 611 is opposite to the opening of the second slide groove 621, and the rolling member 630 is movably disposed in the first slide groove 611 and the second slide groove 621. The first slide groove 611 and the second slide groove 621 can limit the rolling member 630 and enable the rolling member 630 to roll smoothly in the two oppositely disposed first slide grooves 611 and second slide grooves 621, thereby achieving smooth rotation between the first mounting bracket 300 and the protective cover 420 in the air supply device.

[0064] In one embodiment, the first fixing assembly 600 further includes a support base 640, which is disposed between the first fixing base 610 and the second fixing base 620. The support base 640 is provided with a retaining hole 641, in which the rolling element 630 is movably disposed. The support base 640 provides additional support for the rolling element 630, thereby enhancing the structural stability of the entire first fixing assembly 600. When the rolling element 630 is movably disposed in the retaining hole 641, the retaining hole 641 cooperates with the first and second chute grooves 611 and 621 to ensure that the rolling element 630 does not deviate from the predetermined track during rolling, thereby preventing device malfunction or damage caused by instability of the rolling element 630.

[0065] Alternatively, the rolling element 630 may be a steel ball, roller, or the like. The first fixing seat 610, the second fixing seat 620, and the support seat 640 may be made of materials such as POM (polyoxymethylene) and PA (nylon). The first mounting bracket 300, the air guide 410, and the protective cover 420 may be made of engineering plastics such as ABS (acrylonitrile butadiene styrene). POM has low water absorption and good dimensional stability, while ABS has excellent mechanical strength, rigidity, toughness, and impact resistance.

[0066] In one embodiment, a plurality of rolling members 630 are provided, and the plurality of rolling members 630 are spaced apart circumferentially along the rotation axis of the air guide 410. A plurality of limiting holes 641 are provided, and the plurality of limiting holes 641 are arranged in a one-to-one correspondence with the plurality of rolling members 630. Specifically, the plurality of rolling members 630 are evenly distributed circumferentially along the rotation axis of the air guide 410, which helps to balance the various forces and moments generated by the air guide 410 during rotation, thereby improving the structural stability of the entire air supply device. The plurality of limiting holes 641 are arranged in a one-to-one correspondence with the plurality of rolling members 630, which can ensure that each rolling member 630 is effectively limited and constrained during rotation, helps to prevent the rolling member 630 from deflecting or falling off during rotation, and further enhances the structural stability of the air supply device.

[0067] The air supply device further includes a first motor 710. A first motor slot 330 is provided on the first mounting frame 300. The first motor 710 is disposed in the first motor slot 330. The output shaft of the first motor 710 is in transmission connection with the air guide 410. Placing the first motor 710 in the first motor slot 330 on the first mounting frame 300 not only fully utilizes the space inside the air supply device but also improves its structural compactness and integration. Furthermore, the output shaft of the first motor 710 is in transmission connection with the air guide 410. When the air outlet direction of the air supply device needs to be adjusted, the air guide 410 can be driven to rotate by the first motor 710, thereby driving the protective cover 420 with the air outlet 421 to rotate together, thereby achieving an upward and downward shaking of the head.

[0068] The air supply device further includes a second mounting bracket 720 and a second fixing assembly 730. The first end of the second mounting bracket 720 is connected to the support frame 100. The air outlet assembly 400 is disposed between the first mounting bracket 300 and the second mounting bracket 720. The second mounting bracket 720 is provided with a second air inlet. The second end of the second mounting bracket 720 is movably connected to the protective cover 420 via the second fixing assembly 730. Specifically, the first and second ends of the second mounting bracket 720 are opposite ends of the support frame 100 in the height direction, and the first end of the second mounting bracket 720 is connected to the top of the support frame 100.

[0069] The second fixing component 730 is connected between the second end of the second mounting frame 720 and the protective cover 420, so that the second end of the second mounting frame 720 is movably connected to the protective cover 420 through the second fixing component 730, so that the first end and the second end of the second mounting frame 720 can be supported. This not only prevents the second mounting frame 720 from tilting or expanding during use, but also supports the protective cover 420 on both sides of the transfer axis of the air guide member 410, making the rotation of the air guide cover relative to the first mounting frame 300 and the second mounting frame 720 more stable and smooth, reducing the deformation of the second mounting frame 720 and the protective cover 420, and improving the stability of the overall operation of the air supply device.

[0070] In one embodiment, the first fixing assembly 600 and the second fixing assembly 730 are symmetrically arranged, which not only makes the air supply device more visually coordinated, but more importantly, it ensures the structural balance of the air supply device, making the overall rotation of the air outlet assembly 400 more stable and smooth.

[0071] The second fixing assembly 730 has the same structure as the first fixing assembly 600 , and the installation structure of the second fixing assembly 730 is also the same as that of the first fixing assembly 600 , which will not be described in detail in this embodiment.

[0072] A second motor slot 721 is provided on the second mounting bracket 720. The fan assembly 500 includes a second motor 510 and centrifugal blades 520. The second motor 510 is mounted in the second motor slot 721, and the output shaft of the second motor 510 is drivingly connected to the centrifugal blades 520. This design makes the overall structure of the air supply device more compact, effectively improving space utilization. The precise positioning of the second motor slot 721 ensures the stability and reliability of the fan assembly 500.

[0073] The first motor 710 and the second motor 510 may be stepper motors, servo motors, etc., without limitation.

[0074] In the cooling fan provided in the embodiment of the present application, the second motor 510 drives the centrifugal blades 520 to rotate. Air enters the centrifugal blades 520 from the first air inlet 310 on the first mounting bracket 300 and the second air inlet on the second mounting bracket 720. Under the action of the centrifugal blades 520, the air is blown out through the air outlet 421 on the air outlet assembly 400. Specifically, a wet curtain 200 is provided on the side of the first mounting bracket 300 facing away from the air outlet assembly 400 and on the side of the second mounting bracket 720 facing away from the air outlet assembly 400. The second motor 510 drives the centrifugal blades 520 to rotate, achieving air intake from both sides and radial air outlet. The air continuously passes through the wet curtains 200 on both sides, and the air on both sides carries moisture after passing through the wet curtains 200, thereby achieving a better humidification effect.

[0075] The air guide 410 is provided with an air duct opening 411, which is arranged opposite to the air outlet 421. The air blown out of the centrifugal fan blades 520 is guided to the air outlet 421 by the air guide 410. When the air guide 410 and the protective cover 420 rotate together, the position of the air outlet 421 can be changed to adjust the air outlet direction of the cooling fan.

[0076] Among them, the air inlet mesh cover 800 can be set on the first mounting frame 300 and the second mounting frame 720 respectively. The air inlet mesh cover 800 is used to protect the wet curtain 200 to prevent people from directly touching the wet curtain 200, and can surround the wet curtain 200, making the overall appearance more beautiful.

[0077] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0078] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0079] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. An air supply device for a cooling fan, characterized in that: The air supply device comprises: a first mounting bracket, wherein a first end of the first mounting bracket is connected to the support structure of the cooling fan, and a first air inlet is provided on the first mounting bracket; An air outlet assembly, comprising an air guide and a protective cover connected to each other, wherein the air guide is rotatably connected to the first mounting bracket, the protective cover is sleeved on the air guide, the protective cover is movably connected to the second end of the first mounting bracket, and the protective cover is provided with an air outlet; The fan assembly is used to drive the air flow to flow in the direction from the first air inlet through the air guide to the air outlet.

2. The air supply device according to claim 1, characterized in that: The protective cover is movably connected to the second end of the first mounting bracket via a first fixing assembly, wherein the first fixing assembly includes a first fixing seat, a second fixing seat, and a rolling element, wherein the first fixing seat is connected to the second end of the first mounting bracket, the second fixing seat is connected to the protective cover, and the rolling element is rollingly connected between the first fixing seat and the second fixing seat; The second fixing seat rotates around the rotation axis of the air guide member to drive the rolling member to roll relative to the first fixing seat.

3. The air supply device according to claim 2, characterized in that: The first fixing seat and the second fixing seat are both arranged in a ring shape, the first mounting frame is provided with a first mounting surface, and the protective cover is provided with a second mounting surface. The first mounting surface and the second mounting surface are both arranged along the circumference of the rotation axis of the air guide member, the first fixing seat is connected to the first mounting surface, and the second fixing seat is connected to the second mounting surface.

4. The air supply device according to claim 3, characterized in that: In the extension direction of the rotation axis of the air guide member, the first mounting surface is arranged on one side of the first mounting frame, the second mounting surface is arranged on one side of the protective cover, and the first mounting surface extends into the protective cover, and the first fixing seat and the rolling member are located in the protective cover.

5. The air supply device according to claim 3, characterized in that: The first fixing seat is provided with a first sliding groove, the second fixing seat is provided with a second sliding groove, the opening of the first sliding groove is opposite to the opening of the second sliding groove, and the rolling element is movably arranged in the first sliding groove and the second sliding groove.

6. The air supply device according to any one of claims 3 to 5, characterized in that: The first fixing assembly further includes a support seat, which is arranged between the first fixing seat and the second fixing seat. A limiting hole is provided on the support seat, and the rolling element is movably arranged in the limiting hole.

7. The air supply device according to claim 6, characterized in that: There are multiple rolling members, which are spaced apart circumferentially along the rotation axis of the air guide member. There are multiple limiting holes, which are arranged in a one-to-one correspondence with the multiple rolling members.

8. The air supply device according to claim 1, wherein: The air supply device also includes a first motor. The first mounting frame is provided with a first motor slot. The first motor is arranged in the first motor slot. The output shaft of the first motor is transmission-connected to the air guide member.

9. The air supply device according to claim 2, characterized in that: The air supply device further includes a second mounting bracket and a second fixing assembly, wherein a first end of the second mounting bracket is connected to the support structure of the cooling fan, the air outlet assembly is arranged between the first mounting bracket and the second mounting bracket, and a second air inlet is provided on the second mounting bracket; The second end of the second mounting bracket is movably connected to the protective cover via the second fixing assembly.

10. The air supply device according to claim 9, characterized in that: The first fixing component and the second fixing component are symmetrically arranged.

11. The air supply device according to claim 9, characterized in that: The second mounting frame is provided with a second motor slot, the fan assembly includes a second motor and centrifugal fan blades, the second motor is arranged in the second motor slot, and the output shaft of the second motor is transmission-connected to the centrifugal fan blades.

12. A cooling fan, characterized in that: It comprises a support frame, a wet curtain and an air supply device according to any one of claims 1 to 11, wherein the first end of the first mounting frame is connected to the support frame, and the wet curtain is installed on a side of the first mounting frame away from the air outlet assembly.

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