Spraying fan and flow guide structure thereof

Abstract

The utility model discloses a flow guide structure which comprises a flow guide piece, a flow guide cover and a flow guide cover, the flow guide piece is provided with a first opening and a second opening which are oppositely arranged, the first opening is used for installing the flow guide piece on a spray fan, and the second opening is used for spraying atomized water through the flow guide piece by the spray fan; along the opening direction from the first opening to the second opening, the channel of the flow guide piece is gradually shrunk; a water outlet is formed in the lower end of the flow guide part so that water gathered on the atomizing face of the spraying fan can be guided to a preset area. The flow guide part is installed on the spraying fan through the first opening, atomized water enters the flow guide part through the first opening and is sprayed out from the second opening, and a channel of the flow guide part is gradually reduced in the spraying direction of water mist, so that water on the atomized surface and the inner wall of the flow guide part is gathered at the water outlet and flows out to a preset area through the water outlet; therefore, the fan is prevented from being influenced by the water dripping phenomenon of the atomization surface, and the operation stability and service life of the fan are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan technical field especially relates to a spray fan and its flow guide structure. BACKGROUND

[0002] Electric fan is also called fan, fan blower, which is a kind of household appliance that uses electric motor to drive fan blade rotation to accelerate air circulation. In order to improve the cooling effect, the existing fan is provided with a spray assembly at the center of the fan. However, when the atomization time of the spray assembly is too long or the atomized particles are too large, water droplets will form on the end face of the spray assembly, which will drip onto the spray fan and even seep into the circuit board inside the spray fan, affecting the stability and service life of the fan and reducing the user's experience.

[0003] Therefore, the prior art needs to be improved and improved. UTILITY MODEL CONTENT

[0004] In view of the above shortcomings of the prior art, the utility model aims at providing a spray fan and its flow guide structure to improve the poor use effect of the spray fan in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A flow guide structure of a spray fan, comprising:

[0007] A flow guide member having a first opening and a second opening arranged oppositely, the first opening being provided for mounting the flow guide member on the spray fan, and the second opening being provided for the spray fan to spray the atomized water through the flow guide member;

[0008] The channel of the flow guide member is tapered along the opening direction from the first opening to the second opening; and the lower end of the flow guide member is provided with a water outlet to guide the water collected on the atomization surface of the spray fan to a preset area.

[0009] The flow guide member is provided with a folding portion, and the folding portion is located at the end of the second opening.

[0010] The distance between the highest point on the second opening and the point of its projection on the plane of the first opening is less than the distance between the lowest point on the second opening and the point of its projection on the plane of the first opening.

[0011] The flow guide member comprises a flow guide surface, the flow guide surface comprises at least a part of arc surface or V-shaped surface, the flow guide surface is arranged close to the lower part of the flow guide member, and the water outlet is located on the flow guide surface.

[0012] The turning portion defines a guide channel on the inner wall of the flow guide, and the guide channel comprises a first guide opening and a second guide opening which are connected.

[0013] The guide channel is obliquely arranged on the inner wall of the flow guide, and an R chamfer is arranged on the end face of the turning portion.

[0014] The shape of the projection of the second opening on the plane of the first opening is the same as the shape of the first opening; the contour of the first opening is circular; the length of the line connecting the highest point of the second opening and the point of the projection of the highest point on the plane of the first opening is 0.25-0.36 times the diameter of the first opening; the length of the line connecting the lowest point of the second opening and the point of the projection of the lowest point on the plane of the first opening is 0.33-0.54 times the diameter of the first opening; the projection of the second opening on the plane of the first opening is a projection opening, and the ratio of the diameter of the projection opening to the diameter of the first opening is 0.85-0.95.

[0015] The flow guide is provided with a clamping member matched with the grid of the spray fan; the clamping member comprises two oppositely arranged clamping portions, and a clamping space for clamping the grid is defined between the two clamping portions; and a chamfer is arranged on the clamping portion close to the clamping space.

[0016] A flow guide structure of a spray fan comprises:

[0017] A flow guide having a first opening and a second opening arranged oppositely, the first opening being used for mounting the flow guide on the spray fan, and the second opening being used for spraying the atomized water out of the flow guide by the spray fan;

[0018] In the direction from the second opening to the first opening, the channel of the flow guide is tapered; a turning portion is arranged on the flow guide, and the turning portion is located at the end of the second opening; and a water outlet is arranged at the lower end of the flow guide to guide the water collected on the atomization surface of the spray fan to a preset area.

[0019] The distance between the line connecting the highest point of the second opening and the point of the projection of the highest point on the plane of the first opening is smaller than the distance between the line connecting the lowest point of the second opening and the point of the projection of the lowest point on the plane of the first opening.

[0020] The flow guide comprises a flow guide surface, the flow guide surface comprises at least a part of an arc surface or a V-shaped surface, the flow guide surface is arranged close to the lower part of the flow guide, the water outlet is located on the flow guide surface, and the water outlet is arranged close to the side of the second opening.

[0021] The turning part defines an inclined guide channel on the inner wall of the flow guide, the guide channel comprises a first guide opening and a second guide opening which are connected, and the first guide opening is higher than the second guide opening; and an R chamfer is arranged on the end face of the turning part.

[0022] A spray fan comprises a fan body and a container for containing water to be atomized and supporting the fan body, a flow guide structure of the spray fan is mounted on the end of the fan body, and a hose is connected to the water outlet to guide the water droplets accumulated on the atomization surface of the fan body to flow back into the container.

[0023] Compared with the prior art, the flow guide structure provided by the utility model comprises a flow guide piece, the flow guide piece is provided with a first opening and a second opening which are oppositely arranged, the first opening is used for mounting the flow guide piece on a spray fan, the second opening is used for spraying water atomized by the spray fan through the flow guide piece, the channel of the flow guide piece gradually decreases along the opening direction from the first opening to the second opening, and the lower end of the flow guide piece is provided with a water outlet for guiding the water accumulated on the atomization surface of the spray fan to a preset area. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 An angle structure schematic view of the flow guide structure of the spray fan in the first embodiment of the utility model.

[0025] Figure 2 Another angle structure schematic view of the flow guide structure of the spray fan in the first embodiment of the utility model.

[0026] Figure 3 A sectional view of the flow guide structure of the spray fan in the first embodiment of the utility model.

[0027] Figure 4 An angle structure schematic view of the flow guide structure of the spray fan in the second embodiment of the utility model.

[0028] Figure 5 Another angle structure schematic view of the flow guide structure of the spray fan in the second embodiment of the utility model.

[0029] Figure 6The utility model provides a structure schematic diagram of the spray fan of first embodiment's flow guide structure.

[0030] Figure 7 The utility model provides a structure schematic diagram of the spray fan of first embodiment's flow guide structure.

[0031] Figure 8 For Figure 7 The local amplification drawing of A part in the middle.

[0032] Figure 9 The utility model provides a structure schematic diagram of the spray fan of first embodiment's flow guide structure.

[0033] Reference signs

[0034] Flow guide piece 1, first opening 11 (111), second opening 12 (121), water outlet 13, turnover portion 14, guide channel 2, clamping piece 3, clamping portion 31, chamfer 32, fan body 4, grating 41, container 5, through hole 51, hose 6, drainage piece 7. Specific embodiments

[0035] In order to make the purpose, technical scheme and effect of the utility model more clear and definite, the utility model is further explained in detail below with reference to the drawings and examples.

[0036] It should be noted that when a component is referred to as being "mounted on", "fixed on" or "disposed on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there can be a middle component.

[0037] It should also be noted that the terms left, right, up, down and the like in the embodiments of the utility model are merely relative concepts or are referenced to the normal use state of the product, and should not be considered as limiting.

[0038] Electric fan is also called fan, fan blower, which is a kind of household appliance that uses electric motor to drive fan blade rotation to accelerate air flow. In order to improve the cooling effect, the existing fan is provided with a spray assembly at the center of the fan. However, when the atomization time of the spray assembly is too long or the atomized particles are too large, water droplets will form on the end face of the spray assembly, which will drip onto the spray fan along the atomization surface, even seep into the circuit board inside the spray fan, affecting the stability and service life of the fan, and also reducing the user experience. It should be noted that the fan in the present application is a fan with a support seat. In order to facilitate the user to adjust the fan, the adjustment button of the fan on the support seat is arranged on the same side as the atomization surface. In this case, the water droplets will seep into the circuit board inside the support seat through the side of the adjustment button on the support seat after dripping along the atomization surface, thereby affecting the normal work of the circuit board. This only explains the reason why the dripping phenomenon affects the fan, and does not limit the protection scope.

[0039] In view of the shortcomings of the prior art, the utility model provides a flow guide structure, please refer to Figure 1 Figure 5 , comprising:

[0040] The flow guide piece 1 has a first opening 11 and a second opening 12 arranged opposite to each other. The first opening 11 is used for mounting the flow guide piece 1 on the spray fan, and the second opening 12 is used for the spray fan to spray the atomized water through the flow guide piece 1.

[0041] Along the opening direction from the first opening 11 to the second opening 12, the channel of the flow guide piece 1 is tapered. The lower end of the flow guide piece 1 is provided with a water outlet 13 to guide the water collected on the atomization surface of the spray fan to a predetermined area. In the present application, the flow guide piece 1 is mounted on the spray fan through the first opening 11, and the atomized water enters the flow guide piece 1 through the first opening 11 and is sprayed out from the second opening 12. The channel of the flow guide piece 1 gradually decreases along the direction of the water mist spray, so that the water on the atomization surface and the inner wall of the flow guide piece 1 is collected at the water outlet 13 and flows out to the predetermined area through the water outlet 13, thereby avoiding the influence of the dripping phenomenon on the atomization surface on the fan, improving the stability and service life of the fan.

[0042] ​Further, the flow guide 1 is provided with a folded portion 14, and the folded portion 14 is located at the end of the second opening 12. In the first and second embodiments of the present application, the flow guide 1 extends at one end of the second opening 12 to form the folded portion 14, and the folded portion 14 is arranged along the contour of the second opening 12. When the flow guide 1 is installed on the spray fan, it will be in contact with the sprayed water mist, and then the water droplets or water flow will gather on the inner wall of the flow guide 1. The arrangement of the folded portion 14 plays a blocking role on the water gathered on the inner wall of the flow guide 1 at the second opening 12, avoiding the formation of water droplets at the lower part of the second opening 12, and also plays a guiding role on the water around the second opening 12, so that the atomized water flows along the folded portion 14 to the inner wall of the lower part of the flow guide 1 and then flows out of the water outlet 13 to the preset area along the flow guide 1.

[0043] Further, the distance between the highest point on the second opening 12 and the point on the plane on which the first opening 11 is located is less than the distance between the lowest point on the second opening 12 and the point on the plane on which the first opening 11 is located. In the first and second embodiments of the present application, the distance between the point on the second opening 12 and the point on the plane on which the first opening 11 is located gradually increases from the highest point on the second opening 12 to the lowest point on the second opening 12. Specifically, taking the plane on which the first opening 11 is located as the reference plane, the upper part of the second opening 12 is close to the side on which the first opening 11 is located, and the lower part of the second opening 12 is away from the side on which the first opening 11 is located, that is, the plane on which the second opening 12 is located is inclined compared to the reference plane and the upper part of the second opening 12 is closer to the side on which the first opening 11 is located. After the flow guide 1 is in contact with the water mist, water droplets will form on the upper part of the second opening 12 of the flow guide 1, and at this time, the lower part of the second opening 12 can receive the water droplets falling from the upper part of the second opening 12 and flow back to the water outlet 13 along the inner wall of the flow guide 1. If the plane on which the second opening 12 is located is parallel to the plane on which the first opening 11 is located, the water droplets on the upper part of the second opening 12 may fall on the spray fan, thereby affecting the use of the spray fan and the user's experience.

[0044] Further, the flow guide 1 comprises a flow guide surface, which comprises at least a part of an arc surface or a V-shaped surface, the flow guide surface is arranged near the lower part of the flow guide 1, and the water outlet 13 is located on the flow guide surface. In the first and second embodiments of the present application, the lower part of the flow guide 1 is at least an arc surface, which aims to gather and guide the water on the inner wall of the flow guide 1 to the water outlet 13, improve the gathering and flowing efficiency of the water, and avoid gathering too much water in the flow guide 1 to cause the dripping phenomenon at the second opening 12. Further, the flow guide 1 is circular along the cross section parallel to the reference surface, that is, the flow guide 1 is a circular tubular shape, which is beneficial to the faster gathering of the water flow to the lower part of the flow guide 1 and then into the water outlet 13. In the present application, the specific depth of the arc surface is not limited, but the water outlet 13 needs to be close to the side of the first opening 11 and located at the lower point of the arc surface, and the depth of the arc surface needs to ensure that the flow guide 1 can gather less water on the arc surface to avoid the slow water flow at the water outlet 13 to cause the dripping phenomenon at the side of the second opening 12. Of course, alternatively, the flow guide surface can also be a V-shaped surface, which has basically the same effect as the arc surface, and the present application does not elaborate on the V-shaped surface and does not limit the depth of the V-shaped surface.

[0045] Further, please refer to Figure 4 and Figure 5, the turning part 14 defines a guide channel 2 on the inner wall of the flow guide 1, the guide channel 2 comprises a first guide opening and a second guide opening which are connected, and the first guide opening is higher than the second guide opening. The guide channel 2 is obliquely arranged on the inner wall of the flow guide 1, which is beneficial to the water flow along the turning part 14 and into the inner wall of the flow guide 1 through the guide channel 2. The end surface of the turning part 14 is provided with an R chamfer, and the R chamfer is concave to the inner wall of the flow guide 1, which can better guide the water mist to converge on the end surface of the turning part 14 and into the guide channel 2. On the basis of the first embodiment, in the second embodiment of the application, the turning part 14 is provided with two turning parts, including an upper turning part 14 and a lower turning part 14, the two turning parts 14 are arranged along the contour of the second opening 12, the upper turning part 14 and the lower turning part 14 are opposite to each other and symmetrical to each other left and right at the second opening 12, the upper turning part 14 is superior arc, the lower turning part 14 is inferior arc, the two side end surfaces of the upper and lower turning parts 14 define the guide channel 2 on the inner wall of the flow guide 1, and the guide channel 2 is located on the arc surface; when the water atomized by the spray fan is sprayed out through the flow guide 1, part of the water flow will converge at the second opening 12, and the water flow is guided by the turning part 14 to enter the guide channel 2 through the first guide opening and flow into the inner wall of the flow guide 1 through the second guide opening, and then flow to the water outlet 13 under the guidance of the inner wall of the flow guide 1. The arrangement of the guide channel 2 plays a guiding role on the water flow around the second opening 12, and avoids the water flow from converging at the lower part of the turning part 14 to form dripping phenomenon. The first guide opening being higher than the second guide opening refers to the relative position state of the two when the guide part is installed on the spray fan, so that when the water converges around the second opening 12, the water will flow along the upper turning part 14 and enter the guide part through the first guide opening, the guide channel 2 and the second guide opening.

[0046] Further, please refer again to Figure 1 - Figure 5The shape of the second opening 12 projected on the plane where the first opening 11 is located is the same as the shape of the first opening 11. In the present application, the upper shape of the first opening 11 can be square, trapezoidal or arc-shaped, etc. The lower shape of the first opening 11 is arc-shaped. In the first and second embodiments of the present application, the shape of the first opening 11 is circular, and the shape of the second opening 12 on the plane where it is located is approximately elliptical. At this time, the flow guide 1 is in the shape of a circular tube. The ratio of the length of the line connecting the highest point on the second opening 12 and the point on the plane where the first opening 11 is located to the diameter of the first opening 11 is 0.25-0.36. The ratio of the length of the line connecting the lowest point on the second opening 12 and the point on the plane where the first opening 11 is located to the diameter of the first opening 11 is 0.33-0.54. The projection of the second opening 12 on the plane where the first opening 11 is located is a projected opening. The ratio of the diameter of the projected opening to the diameter of the first opening 11 is 0.85-0.95. In the first and second embodiments of the present application, the highest point on the second opening 12 and the lowest point on the second opening 12 refer to the highest point and the lowest point on the inner wall of the flow guide 1 on one side of the second opening 12. The diameter of the first opening 11 is the inner diameter of the flow guide 1 on one side of the first opening 11. Specifically, the diameter of the first opening 11 is 58 mm, the diameter of the circular shape formed by the projection of the second opening 12 on the reference plane (i.e. the projected opening) is 54 mm, the length of the line connecting the highest point on the second opening 12 and the point on the plane where the first opening 11 is located is 18 mm, and the length of the line connecting the lowest point on the second opening 12 and the point on the plane where the first opening 11 is located is 25 mm. The flow guide 1 formed according to the aforementioned dimensions can better guide the water droplets formed on the atomization surface and the water flow formed on the inner wall of the flow guide 1 to reduce the possibility of water droplets being formed along the spray direction and falling onto the spray fan when the first opening 11 of the flow guide 1 is installed on the spray fan. In actual situations, other parameters of the flow guide 1 can be limited according to the size of the first opening 11 to form the required flow guide 1, which is not limited in the present application. Meanwhile, the size and shape of the folded portion 14 are not limited in the present application and can be set according to actual situations as long as the functions thereof can be achieved.

[0047] Further, the flow guide 1 is provided with a clamping meter 3 matched with the grilles 41 of the spray fan; in the application, the clamping meter 3 is inserted between the two grilles 41 of the spray fan in a clamping manner to improve the stability of the installation of the flow guide 1 on the spray fan; further, the clamping meter 3 comprises two oppositely arranged clamping portions 31, and a clamping space for clamping the grilles 41 is defined between the two clamping portions 31; the clamping of a single grille 41 in the clamping space can better ensure the levelness of the installation of the flow guide 1 and avoid affecting the atomization effect of the spray fan; further, the clamping portion 31 is provided with a chamfer 32 near one side of the clamping space to guide the clamping and matching of the clamping meter 3 and the grilles 41; the provision of the chamfer 32 facilitates the user to clamp a single grille 41 between the two clamping portions 31.

[0048] On the basis of adaptive adjustment of the first and second embodiments, the application further provides another flow guide structure of a spray fan, please refer to Figure 1 Figure 9 , comprising:

[0049] A flow guide 1, the flow guide 1 has oppositely arranged first and second openings 111 and 121, the first opening 111 is for the installation of the flow guide 1 on the spray fan, and the second opening 121 is for the spray fan to spray the atomized water through the flow guide 1;

[0050] In the direction from the second opening 121 to the first opening 111, the channel of the flow guide 1 is tapered; the flow guide 1 is provided with a folding portion 12, and the folding portion 12 is located at the end of the second opening 121; the lower end of the flow guide 1 is provided with a water outlet 13 to guide the water collected on the atomization surface of the spray fan to a predetermined area. In the third embodiment of the application, when the water droplets formed on the atomization surface of the spray fan fall onto the flow guide 1, they will flow to the predetermined area through the water outlet from the first opening 111 to the second opening 121 along the inner wall of the flow guide 1; the provision of the folding portion 14 plays a blocking role on the water collected on the inner wall of the flow guide 1, avoiding water dripping at the end of the second opening 121 of the flow guide 1; it should be noted that in actual conditions, the frequency of water droplets collected on the atomization surface of the spray fan and falling is slow, and will not form a relatively fast water flow, and the water outlet 13 will continuously guide the water to the predetermined area; the size of the water outlet 13 can be adaptively modified according to the actual flow guide structure and the dripping frequency of the atomization surface, which is not limited in the application.

[0051] ​Further, the distance between the highest point on the second opening 121 and the point on the plane where the first opening 111 is located is less than the distance between the lowest point on the second opening 121 and the point on the plane where the first opening 111 is located. The flow guide 1 comprises a flow guide surface, which comprises at least a part of an arc-shaped surface or a V-shaped surface, the flow guide surface is arranged close to the lower part of the flow guide, the water outlet 13 is located on the flow guide surface, and the water outlet 13 is arranged close to one side of the second opening 121, which helps to guide the water droplets to flow more smoothly into the water outlet, and to reduce the amount of water gathered in the flow guide 1 as much as possible. On the basis of the third embodiment, in the fourth embodiment of the present application, the folded part 14 defines an inclined guide channel on the inner wall of the flow guide 1, the guide channel comprises a first guide opening and a second guide opening connected in communication, and the first guide opening is higher than the second guide opening; the end surface of the folded part 14 is provided with an R chamfer; the specific structures and beneficial effects produced are basically the same as those of the first embodiment and the second embodiment, and will not be repeated here.

[0052] The utility model also provides a kind of spray fan, please refer to Figure 1 Figure 9 , including fan body 4 and container 5, the container 5 is used to hold water to be atomized and supports the fan body 4, the flow guide structure is installed at the end of the fan body 4, the water outlet 13 is connected with hose 6, to guide the water droplets accumulated on the atomization surface of the fan body 4 to flow back into the container 5.It needs to be explained that the structure and principle of the fan body 4 in the present application sucking and atomizing liquid in the container 5 belong to prior art, and will not be repeated here, and the present application aims to improve the problem of water droplets generated on the end surface of the fan body 4 during atomization.In the embodiment of the present application, the end of the fan body 4 extends outward and protrudes from the surface of the fan grille 41, so that the flow guide 1 is installed on the fan body 4 through the first opening 11, the lower end of the water outlet 13 is provided with a drainage member 7, the drainage member 7 is a hollow structure and communicates with the water outlet 13, the drainage member 7 is connected with the upper end of the hose 6, and the lower end of the hose 6 extends into the container 5;Of course, the lower end of the hose 6 can directly extend into the container 5 from the upper end opening of the container 5, or a through hole 51 can be provided on the side wall of the container 5 for the lower end of the hose 6 to insert and extend into the container 5.In the existing design, when the fan body 4 sucks and atomizes water for a long time or the atomized particles are too large, water mist will be generated on the end surface of the fan body 4 and accumulated on the lower part of the atomization surface along the end surface to form water droplets, so the flow guide structure is arranged on the end of the fan body 4 in the present application to guide the water droplets to flow back into the container 5 for re-suction, improve the utilization rate of water in the container 5, and also avoid affecting the stability and service life of the fan operation.The preset area in the foregoing is the container 5 in the present application.

[0053] ​In summary, the utility model provides a kind of flow guide structure, comprising: flow guide piece, the flow guide piece has oppositely arranged first opening and second opening, the first opening is for the flow guide piece is installed on spray fan, the second opening is for spray fan to be after atomization Water is sprayed out through the flow guide piece;Along the opening direction of the first opening to the second opening, the passage of the flow guide piece is tapered;The lower end of the flow guide piece is provided with water outlet, to guide the water gathered on the atomization surface of spray fan to preset area.In the present application, the flow guide piece is installed on the spray fan through the first opening, the water after atomization enters the flow guide piece through the first opening and is sprayed out from the second opening, the passage of the flow guide piece gradually decreases along the spray direction of water mist, so that the water on the atomization surface and the inner wall of the flow guide piece is gathered at the water outlet and flows out to the preset area through the water outlet, thereby avoiding the influence of water dripping phenomenon on the fan, improving the stability and service life of the fan operation.

[0054] It can be understood that, for those skilled in the art, equivalent replacements or changes can be made according to the technical scheme and the utility model concept of the utility model, and all these changes or replacements shall belong to the protection scope of the claims attached to the utility model.

Claims

1. A deflector structure for a mist fan, characterized by, The utility model provides a guide piece, the guide piece has opposite first opening and second opening, the first opening is used for the guide piece to install on the spray fan, the second opening is used for the spray fan to spray the atomized water through the guide piece, the channel of the guide piece is tapered along the opening direction from the first opening to the second opening, the lower end of the guide piece is provided with the water outlet, and the water gathered on the atomization surface of the spray fan is guided to the preset area. The guide piece is provided with a folding part, and the folding part is located at the end of the second opening. The distance between the highest point on the second opening and the point projected on the plane of the first opening is smaller than the distance between the lowest point on the second opening and the point projected on the plane of the first opening.

2. The flow guiding structure of a spray fan according to claim 1, characterized in that The guide piece comprises a guide surface, the guide surface comprises at least a part of an arc surface or a V-shaped surface, the guide surface is arranged close to the lower part of the guide piece, and the water outlet is located on the guide surface.

3. The flow guiding structure of a spray fan according to claim 2, characterized in that The folding part defines a guide channel on the inner wall of the guide piece, the guide channel comprises a first guide opening and a second guide opening connected in communication, and the first guide opening is higher than the second guide opening.

4. The flow guiding structure of a spray fan according to claim 2 or 3, characterized in that The guide channel is obliquely arranged on the inner wall of the guide piece, and an R chamfer is arranged on the end face of the folding part.

5. The flow guiding structure of a spray fan according to claim 4, characterized in that The shape of the projection of the second opening on the plane of the first opening is the same as the shape of the first opening, the contour of the first opening is circular, the length of the line between the highest point on the second opening and the point projected on the plane of the first opening is 0.25-0.36 times the diameter of the first opening, the length of the line between the lowest point on the second opening and the point projected on the plane of the first opening is 0.33-0.54 times the diameter of the first opening, the projection of the second opening on the plane of the first opening is a projection opening, and the ratio of the diameter of the projection opening to the diameter of the first opening is 0.85-0.

95.

6. The flow guiding structure of a spray fan according to claim 5, wherein The utility model provides a guide piece, the guide piece has opposite first opening and second opening, the first opening is used for the guide piece to install on the spray fan, the second opening is used for the spray fan to spray the atomized water through the guide piece, the channel of the guide piece is tapered along the opening direction from the first opening to the second opening, the lower end of the guide piece is provided with the water outlet, and the water gathered on the atomization surface of the spray fan is guided to the preset area.

7. The deflector structure of a spray fan according to claim 4, wherein The guide piece is provided with a folding part, and the folding part is located at the end of the second opening.

8. A deflector structure for a mist fan, characterized by The guide piece comprises a guide surface, the guide surface comprises at least a part of an arc surface or a V-shaped surface, the guide surface is arranged close to the lower part of the guide piece, and the water outlet is located on the guide surface. The folding part defines a guide channel on the inner wall of the guide piece, the guide channel comprises a first guide opening and a second guide opening connected in communication, and the first guide opening is higher than the second guide opening. The guide channel is obliquely arranged on the inner wall of the guide piece, and an R chamfer is arranged on the end face of the folding part.

9. The flow guiding structure of a spray fan according to claim 8, characterized in that The shape of the projection of the second opening on the plane of the first opening is the same as the shape of the first opening, the contour of the first opening is circular, the length of the line between the highest point on the second opening and the point projected on the plane of the first opening is 0.25-0.36 times the diameter of the first opening, the length of the line between the lowest point on the second opening and the point projected on the plane of the first opening is 0.33-0.54 times the diameter of the first opening, the projection of the second opening on the plane of the first opening is a projection opening, and the ratio of the diameter of the projection opening to the diameter of the first opening is 0.85-0.

95.

10. The flow guiding structure of a spray fan according to claim 8 or 9, characterized in that ​ 11. The flow guiding structure of a spray fan according to claim 10, characterized in that The turning part defines an inclined guide channel on the inner wall of the flow guide, the guide channel comprises a first guide opening and a second guide opening in communication, the first guide opening is higher than the second guide opening; an R chamfer is arranged on the end face of the turning part.

12. A misting fan characterized by, The spray fan comprises a fan body and a container for containing water to be atomized and supporting the fan body, a flow guide structure of the spray fan as claimed in any one of claims 1-11 is installed at the end of the fan body, and a hose is connected to the water outlet to guide the water droplets accumulated on the atomization surface of the fan body to flow back into the container.

Images