CN219139469U - Fan head and bladeless fan - Google Patents

Abstract

The utility model provides a fan head and a bladeless fan, wherein the fan head comprises: the inner shell comprises a shell, and the shell is provided with an air outlet air duct and an air outlet communicated with the air outlet air duct; the drainage structure comprises a main body and a drainage fin arranged on the main body, wherein the main body is connected with the shell, the drainage fin penetrates into the air outlet air duct from the shell, and the drainage fin guides air blown out from the air outlet air duct. By arranging the independent drainage structure, the utility model ensures that the drainage fins are not limited by the manufacture of products and have enough length, and the length of the drainage fins can meet the actual air guiding requirement; the air outlet of the fan head is provided with the air outlet, and the air outlet of the fan head is provided with the air outlet.

Description

Fan head and bladeless fan

Technical Field

The utility model relates to the technical field of fans, in particular to a fan head and a bladeless fan.

Background

At present, the existing bladeless fan is generally of an integrated structure with a shell, and is limited by the conditions of die manufacturing production, the drainage fins on the shell cannot be too long, otherwise, uneven material thickness of integrally formed product parts can be caused, and the problem of poor outer surface processing is caused; the drainage fin is not long enough, so that the internal air flow is not effectively and forwards drained after passing through the air outlet, and then the wind is diffused to other directions, and the use experience of a user is poor.

Disclosure of Invention

The utility model provides a fan head and a bladeless fan, which are used for solving the problem that drainage fins in the prior art are not long enough.

In order to solve the above-mentioned problems, according to an aspect of the present utility model, there is provided a fan head comprising: the inner shell comprises a shell, and the shell is provided with an air outlet air duct and an air outlet communicated with the air outlet air duct; the drainage structure comprises a main body and a drainage fin arranged on the main body, wherein the main body is connected with the shell, the drainage fin penetrates into the air outlet air duct from the shell, and the drainage fin guides air blown out from the air outlet air duct.

Further, the side wall of the shell is provided with a mounting opening, the main body seals the mounting opening, a plurality of drainage fins are arranged on the main body at intervals, and the plurality of drainage fins penetrate into the air outlet duct from the mounting opening.

Further, the drainage structure further comprises a reinforcing rib, the reinforcing rib is connected with the plurality of drainage fins, the reinforcing rib is arranged opposite to the main body, and the reinforcing rib is abutted with the inner wall of the shell.

Further, the inner shell further comprises a fixing fin fixed in the shell, the fixing fin is arranged at the air outlet, one end of the drainage fin is in butt joint with one end of the fixing fin in the air outlet air duct, and the drainage fin and the fixing fin guide the air blown out from the air outlet air duct together.

Further, the fixing wing panel is provided with a wind guiding surface, the wind guiding wing panel is provided with a drainage surface, one edge of the wind guiding surface is in butt joint with one edge of the drainage surface, the wind guiding surface and the drainage surface are coplanar, or the wind guiding surface is inclined relative to the drainage surface.

Further, the casing includes relative first lateral wall and second lateral wall, and air-out wind channel and air outlet all are located between first lateral wall and the second lateral wall, and main part and first lateral wall are connected, and the drainage fin penetrates air-out wind channel and with the second lateral wall butt from first lateral wall.

Further, the inner shell further comprises an annular rib surrounding the mounting opening, the main body comprises a bearing plate and an annular sealing plate, the annular sealing plate and the drainage fins are arranged on the bearing plate, and the annular sealing plate surrounds the bearing plate; wherein, the loading board seals the installing port, and annular shrouding and annular rib butt.

Further, one side of the shell, which is away from the air outlet duct, is provided with an annular groove, the annular groove surrounds the annular rib, the main body also comprises an annular rib, and the annular rib is connected with the annular sealing plate and surrounds the annular sealing plate; wherein, form the annular chamber between annular muscle and the loading board, annular rib is located the annular intracavity, and the one end of annular muscle towards the air-out wind channel is located annular groove.

Further, the inner shell further comprises a protruding block, the protruding block is arranged on the outer peripheral surface of the annular rib, the inner wall of the annular rib is provided with a clamping groove, and the protruding block is in clamping fit with the clamping groove.

Further, one side of the bearing plate, which is away from the air outlet air duct, is provided with a weight-reducing groove, the surface shape of one side of the bearing plate, which faces the air outlet air duct, is matched with the shape of the inner surface of the shell, and the surface edge of one side of the bearing plate, which faces the air outlet air duct, is flush with the edge of one end of the mounting port, which faces the air outlet air duct.

Further, the fan head further comprises an outer shell, the outer shell is connected with the inner shell, the main body of the drainage structure is located between the outer shell and the inner shell, and the inner wall of the outer shell is in butt joint with the main body.

Further, the fan head also comprises two connecting shells, wherein the two inner shells are oppositely arranged and are connected with the connecting shells, and the connecting shells and the two inner shells form an integrated injection structure; the drainage structure is an integral injection molding structure, the number of the drainage structures is two, and the two drainage structures are respectively arranged on the two inner shells.

According to another aspect of the present utility model, there is provided a bladeless fan comprising the fan head described above.

Further, the bladeless fan also comprises a diversion cone, wherein the diversion cone comprises a front diversion cone and a rear diversion cone, and the front diversion cone and the rear diversion cone are correspondingly arranged; the inside of the split cone is provided with a total air channel, a first air channel and a second air channel; the first air duct and the second air duct are respectively communicated with the total air duct; the first air channel is communicated with the air outlet channel of one inner shell, and the second air channel is communicated with the air outlet channel of the other inner shell.

The utility model provides a fan head, which comprises: the inner shell comprises a shell, and the shell is provided with an air outlet air duct and an air outlet communicated with the air outlet air duct; the drainage structure comprises a main body and a drainage fin arranged on the main body, wherein the main body is connected with the shell, the drainage fin penetrates into the air outlet air duct from the shell, and the drainage fin guides air blown out from the air outlet air duct. By arranging the independent drainage structure, compared with the common structure that the drainage fins and the inner shell are integrally formed, the utility model ensures that the drainage fins have enough length without being limited by product manufacture, and the length of the drainage fins can meet the actual air guiding requirement; the air flow guiding fins are matched with the air outlet of the inner shell to form a spliced type air flow guiding structure, and because the air flow guiding fins can be made longer, the air flow guiding structure has a better air flow guiding effect on air blown out from the air outlet of the fan head, so that the air is blown farther or accurately in the required direction, the efficient air blowing of the air outlet of the fan head is realized, and the user experience is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is an exploded view showing a part of the structure of a bladeless fan according to an embodiment of the present utility model;

FIG. 2 illustrates a cross-sectional view of a bladeless fan provided by an embodiment of the present utility model in a top view;

FIG. 3 shows an enlarged view of the structure at A in FIG. 2;

FIG. 4 is a schematic diagram showing a specific structure of a drainage structure according to an embodiment of the present utility model;

FIG. 5 shows an enlarged view of a portion of the drainage structure of FIG. 4;

FIG. 6 shows a schematic view of a portion of the structure of an inner housing provided by an embodiment of the present utility model;

FIG. 7 is a schematic view showing a specific structure of a housing according to an embodiment of the present utility model;

fig. 8 shows an external structural schematic diagram of a bladeless fan provided by an embodiment of the present utility model.

Wherein the above figures include the following reference numerals:

10. an inner case; 11. a housing; 111. an air outlet duct; 112. an air outlet; 113. a mounting port; 114. a first sidewall; 115. a second sidewall; 116. an annular groove; 12. a fixing wing panel; 121. an air guiding surface; 13. an annular rib; 14. a bump;

20. a drainage structure; 21. a main body; 211. a carrying plate; 2111. a weight-reducing groove; 212. an annular sealing plate; 213. annular ribs; 2131. a clamping groove; 214. an annular cavity; 22. drainage fins; 221. a drainage surface; 23. reinforcing ribs;

30. a housing;

40. a connection housing;

50. a split cone; 51. a front split cone; 52. and a rear split cone.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 8, an embodiment of the present utility model provides a fan head, including: the inner shell 10, the inner shell 10 includes a shell 11, the shell 11 has an air outlet duct 111 and an air outlet 112 communicated with the air outlet duct 111; the drainage structure 20, the drainage structure 20 includes main part 21 and sets up the drainage fin 22 on main part 21, and main part 21 and casing 11 are connected, and the drainage fin 22 penetrates in the air-out wind channel 111 from casing 11, and the wind that the drainage fin 22 blew out from air-out wind channel 111 is directed.

By arranging the independent drainage structure 20, compared with the common structure that the drainage fins and the inner shell are integrally formed, the utility model ensures that the drainage fins 22 are not limited by product manufacture and have enough length, and the length of the drainage fins 22 can meet the actual air guiding requirement; the drainage fins 22 are matched with the air outlet 112 of the inner shell 10 to form the spliced drainage structure 20, and because the drainage fins 22 can be made longer, the utility model has better drainage effect on the air blown out from the air outlet 112 of the fan head, so that the air can be blown farther or accurately in the required direction, the high-efficiency blowing of the air outlet 112 of the fan head is realized, and the user experience is improved.

As shown in fig. 1, a mounting opening 113 is formed in a side wall of the housing 11, the main body 21 seals the mounting opening 113, a plurality of drainage fins 22 are arranged on the main body 21 at intervals, and the plurality of drainage fins 22 penetrate into the air outlet duct 111 from the mounting opening 113. By providing the mounting port 113, the main body 21 and the housing 11 are facilitated to be fixedly connected; by arranging a plurality of drainage fins 22 on the main body 21 at intervals, the drainage guiding effect of the drainage fins 22 on the air blown out by the air outlet duct 111 is further ensured.

It should be noted that, in a specific embodiment of the present utility model, the main body 21 and the plurality of drainage fins 22 are an integral injection molding structure, which not only ensures reliable connection between the main body 21 and the plurality of drainage fins 22, but also facilitates processing of the drainage structure 20, and reduces cost.

As shown in fig. 3, 4 and 5, the drainage structure 20 further includes a reinforcing rib 23, where the reinforcing rib 23 is connected to the plurality of drainage fins 22, and the reinforcing rib 23 is disposed opposite to the main body 21, and as shown in fig. 3, the reinforcing rib 23 abuts against the inner wall of the housing 11. Through setting up stiffening rib 23, both guaranteed the fixed strength of a plurality of drainage fins 22 on main part 21, reduced the deformation of casing 11 because of receiving external force through the mode of stiffening rib 23 and the inner wall butt of casing 11 again, improved the bulk rigidity of casing 11, and then avoided air-out wind channel 111 and air outlet 112 to take place deformation because of receiving external force.

As shown in fig. 2 and 3, the inner case 10 further includes a fixing fin 12 fixed in the case 11, the fixing fin 12 is disposed at the air outlet 112, one end of the drainage fin 22 is abutted with one end of the fixing fin 12 facing into the air outlet duct 111, and the drainage fin 22 and the fixing fin 12 together guide the air blown out from the air outlet duct 111. Through the form of design drainage fin 22 and the concatenation of fixed fin 12, form concatenation formula drainage structure, compare ordinary drainage fin and inner shell integrated into one piece structure as an organic whole, the drainage length of concatenation formula drainage structure is bigger, has realized the high-efficient of fan aircraft nose air outlet and has bloied, has improved user's experience.

Notably, are: the length of the common drainage wing piece integrated with the inner shell is about 5mm due to the limitation of the manufacturing process, and the air guiding effect is poor.

Specifically, as shown in fig. 3, the fixing wing 12 has a wind guiding surface 121, the wind guiding wing 22 has a guiding surface 221, one edge of the wind guiding surface 121 is abutted with one edge of the guiding surface 221, the wind guiding surface 121 and the guiding surface 221 are coplanar, or the wind guiding surface 121 is inclined with respect to the guiding surface 221. By setting the positional relationship between the air guiding surface 121 and the air guiding surface 221, the air outlet effect of the fan head can be flexibly adjusted (for example, the air guiding surface 121 and the air guiding surface 221 are arranged in a coplanar manner so as to enable the air outlet to be farther, and the air guiding surface 121 is arranged to incline relative to the air guiding surface 221 so as to adjust the air outlet angle, the air speed and the like), so that flexible adaptation to actual air guiding requirements is realized.

As shown in fig. 3, the housing 11 includes a first side wall 114 and a second side wall 115 opposite to each other, the air outlet duct 111 and the air outlet 112 are both located between the first side wall 114 and the second side wall 115, the main body 21 is connected to the first side wall 114, and the drainage fins 22 penetrate into the air outlet duct 111 from the first side wall 114 and are abutted against the second side wall 115. By arranging the drainage fins 22 to be abutted against the second side wall 115, deformation of the shell 11 is reduced, and further the problem that the air outlet duct 111 and the air outlet 112 deform due to external force impact in the fan carrying process is avoided.

As shown in fig. 3 and 6, the inner casing 10 further includes an annular rib 13, the annular rib 13 surrounds the mounting opening 113, the main body 21 includes a bearing plate 211 and an annular sealing plate 212, the annular sealing plate 212 and the drainage fins 22 are disposed on the bearing plate 211, and the annular sealing plate 212 surrounds the bearing plate 211; wherein, the loading plate 211 seals the mounting opening 113, and the annular sealing plate 212 is abutted with the annular rib 13. By arranging the annular sealing plate 212 to be abutted with the annular rib 13, the bearing plate 211 is ensured to seal the mounting opening 113, and the problem of air leakage of the inner shell 10 is avoided.

As shown in fig. 3, the side of the casing 11 facing away from the air outlet duct 111 is provided with an annular groove 116, the annular groove 116 surrounds the annular rib 13, the main body 21 further comprises an annular rib 213, and the annular rib 213 is connected with an annular sealing plate 212 and surrounds the annular sealing plate 212; an annular cavity 214 is formed between the annular rib 213 and the bearing plate 211, the annular rib 13 is located in the annular cavity 214, and one end of the annular rib 213 facing the air outlet duct 111 is located in the annular groove 116. By the arrangement, the sealing effect of the bearing plate 211 on the mounting opening 113 is further ensured, and firm mounting of the drainage structure 20 on the inner shell 10 is realized.

As shown in fig. 5 and 6, the inner case 10 further includes a protrusion 14, the protrusion 14 is disposed on the outer peripheral surface of the annular rib 13, the inner wall of the annular rib 213 has a clamping groove 2131, and the protrusion 14 is in clamping fit with the clamping groove 2131. Through the joint cooperation that sets up lug 14 and draw-in groove 2131, effectively improved the installation strength of drainage structure 20 on inner shell 10, avoided drainage structure 20 to appear rocking the condition because of the wind-force is too big on inner shell 10.

In one embodiment of the present utility model, the plurality of protruding blocks 14 are arranged on the outer peripheral surface of the annular rib 13 at intervals, and the plurality of clamping grooves 2131 are also arranged in a one-to-one correspondence with the plurality of protruding blocks 14, so that the installation strength of the drainage structure 20 on the inner shell 10 is further improved.

As shown in fig. 1, a weight-reducing groove 2111 is formed on one side of the bearing plate 211 facing away from the air outlet duct 111, the shape of the surface of the side of the bearing plate 211 facing towards the air outlet duct 111 is adapted to the shape of the inner surface of the housing 11, and the edge of the surface of the side of the bearing plate 211 facing towards the air outlet duct 111 is flush with the edge of the end of the mounting opening 113 facing towards the air outlet duct 111. By arranging the weight-reducing grooves 2111, the weight of the bearing plate 211 is effectively reduced, the weight of the drainage structure 20 is reduced, and the cost is reduced; through setting up the surface form looks adaptation of the side of loading board 211 towards air-out wind channel 111 and casing 11 internal surface, effectively reduced the windage in the air-out wind channel 111 for the circulation of air in the air-out wind channel 111 is more smooth and easy, has improved the energy efficiency of fan, simultaneously, has also reduced the noise when blowing.

In a specific embodiment of the present utility model, the plurality of weight-reducing grooves 2111 are disposed at intervals on the side of the carrying plate 211 facing away from the air outlet duct 111, so as to further reduce the weight of the carrying plate 211.

As shown in fig. 3, 7 and 8, the fan head further includes an outer casing 30, the outer casing 30 is connected to the inner casing 10, the main body 21 of the drainage structure 20 is located between the outer casing 30 and the inner casing 10, and an inner wall of the outer casing 30 abuts against the main body 21. By arranging the inner wall of the shell 30 to be abutted with the main body 21, firm fixation of the drainage structure 20 is further ensured; the inner wall of the shell 30 is tightly attached to the drainage fins 22, so that secondary sealing (the primary sealing is the sealing of the bearing plate 211 to the mounting port 113) is formed, and the problem that the drainage fins 22 are in non-sealing fit due to fit clearance caused by assembly tolerance or part deformation and the like is avoided. The utility model effectively avoids the problem that extra shell parts are required to be added to shield the assembly splice seam of the machine head by arranging the mode that the outer shell 30 is connected with the inner shell 10 and the drainage structure 20 is arranged internally, thereby ensuring that the appearance of the product has no extra splice seam and saving the manufacturing cost.

In one embodiment of the present utility model, the outer shell 30 is fixedly connected to the inner shell 10 by a plurality of clamping means.

As shown in fig. 1, the fan head further includes two connection shells 40, two inner shells 10 are disposed opposite to each other and are connected to the connection shells 40, and the connection shells 40 and the two inner shells 10 form an integral injection structure; the drainage structures 20 are integrated injection molding structures, the number of the drainage structures 20 is two, and the two drainage structures 20 are respectively arranged on the two inner shells 10. The arrangement ensures the overall aesthetic property of the fan head and the blowing uniformity of the fan head due to the symmetrical design, and the complex structure can be realized with lower cost by adopting an integral injection molding structure.

As shown in FIG. 8, the utility model also provides a bladeless fan, comprising the fan head. The bladeless fan provided by the utility model has the advantages that the blown wind is wider and the use is comfortable.

As shown in fig. 1, the bladeless fan further comprises a diversion cone 50, wherein the diversion cone 50 comprises a front diversion cone 51 and a rear diversion cone 52, and the front diversion cone 51 and the rear diversion cone 52 are correspondingly arranged; the inside of the split cone 50 is provided with a total air duct, a first air duct and a second air duct; the first air duct and the second air duct are respectively communicated with the total air duct; the first duct communicates with the air outlet duct 111 of one inner casing 10 and the second duct communicates with the air outlet duct 111 of the other inner casing 10. By providing the front and rear tap 51, 52, not only is a simple assembly of the tap 50 ensured, but also an effective tapping of the wind is achieved.

In summary, the present utility model provides a fan head and a bladeless fan, and compared with a common structure in which the air guiding fins and the inner casing are integrally formed, the present utility model ensures that the air guiding fins 22 have a sufficient length without being limited by the manufacturing of the product, and the length of the air guiding fins 22 can meet the actual air guiding requirement by arranging the independent air guiding structure 20; the drainage fins 22 are matched with the air outlet 112 of the inner shell 10 to form the spliced drainage structure 20, and because the drainage fins 22 can be made longer, the utility model has better drainage effect on the air blown out from the air outlet 112 of the fan head, so that the air can be blown farther or accurately in the required direction, the high-efficiency blowing of the air outlet 112 of the fan head is realized, and the user experience is improved.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (14)

1. A fan head, comprising:

an inner shell (10), wherein the inner shell (10) comprises a shell (11), and the shell (11) is provided with an air outlet air duct (111) and an air outlet (112) communicated with the air outlet air duct (111);

drainage structure (20), drainage structure (20) are in including main part (21) and setting drainage fin (22) on main part (21), main part (21) with casing (11) are connected, drainage fin (22) follow casing (11) are penetrated in air-out wind channel (111), drainage fin (22) are to follow the wind that air-out wind channel (111) blows out is led.

2. Fan head according to claim 1, characterized in that the side wall of the housing (11) is provided with a mounting opening (113), the main body (21) seals the mounting opening (113), the main body (21) is provided with a plurality of drainage fins (22) at intervals, and the plurality of drainage fins (22) penetrate into the air outlet duct (111) from the mounting opening (113).

3. Fan head according to claim 2, characterized in that the drainage structure (20) further comprises a stiffening rib (23), the stiffening rib (23) being connected to a plurality of the drainage fins (22), the stiffening rib (23) being arranged opposite the main body (21), the stiffening rib (23) being in abutment with the inner wall of the housing (11).

4. Fan head according to claim 1, characterized in that the inner casing (10) further comprises a fixing fin (12) fixed in the housing (11), the fixing fin (12) being arranged at the air outlet (112), one end of the guiding fin (22) and one end of the fixing fin (12) facing into the air outlet duct (111) being butted, the guiding fin (22) and the fixing fin (12) together guiding the air blown out from the air outlet duct (111).

5. The fan head according to claim 4, characterized in that the fixing wing (12) has a wind guiding surface (121), the guiding wing (22) has a guiding surface (221), one edge of the guiding surface (121) and one edge of the guiding surface (221) are butted, the guiding surface (121) and the guiding surface (221) are coplanar, or the guiding surface (121) is inclined with respect to the guiding surface (221).

6. The fan head according to claim 1, wherein the housing (11) comprises a first side wall (114) and a second side wall (115) opposite to each other, the air outlet duct (111) and the air outlet (112) are both located between the first side wall (114) and the second side wall (115), the main body (21) is connected to the first side wall (114), and the drainage fins (22) penetrate into the air outlet duct (111) from the first side wall (114) and abut against the second side wall (115).

7. The fan head according to claim 2, wherein the inner housing (10) further comprises an annular rib (13), the annular rib (13) surrounding the mounting opening (113), the main body (21) comprises a carrier plate (211) and an annular sealing plate (212), the annular sealing plate (212) and the drainage fins (22) are both arranged on the carrier plate (211), and the annular sealing plate (212) surrounds the carrier plate (211); wherein, the loading plate (211) seals the mounting opening (113), and the annular sealing plate (212) is abutted with the annular rib (13).

8. Fan head according to claim 7, characterized in that the side of the housing (11) facing away from the outlet duct (111) has an annular groove (116), the annular groove (116) surrounding the annular rib (13), the body (21) further comprising an annular rib (213), the annular rib (213) and the annular sealing plate (212) being connected and surrounding the annular sealing plate (212); an annular cavity (214) is formed between the annular rib (213) and the bearing plate (211), the annular rib (13) is located in the annular cavity (214), and one end, facing the air outlet duct (111), of the annular rib (213) is located in the annular groove (116).

9. The fan head according to claim 8, wherein the inner casing (10) further comprises a projection (14), the projection (14) is disposed on the outer circumferential surface of the annular rib (13), the inner wall of the annular rib (213) has a clamping groove (2131), and the projection (14) is in clamping fit with the clamping groove (2131).

10. The fan head according to claim 7, wherein a weight-reducing groove (2111) is formed in a side, facing away from the air outlet duct (111), of the bearing plate (211), a surface shape of a side, facing towards the air outlet duct (111), of the bearing plate (211) is adapted to a shape of an inner surface of the housing (11), and a surface edge, facing towards the air outlet duct (111), of the bearing plate (211) is flush with an edge, facing towards one end of the air outlet duct (111), of the mounting opening (113).

11. Fan head according to claim 1, characterized in that it further comprises an outer casing (30), said outer casing (30) being connected to said inner casing (10), the body (21) of said drainage structure (20) being located between said outer casing (30) and said inner casing (10), the inner wall of said outer casing (30) being in abutment with said body (21).

12. Fan head according to claim 1, characterized in that it further comprises a connecting shell (40), said two inner shells (10) being arranged opposite each other and being connected to said connecting shell (40), said connecting shell (40) and said two inner shells (10) forming an integral injection-molded structure; the drainage structures (20) are integrated injection molding structures, the number of the drainage structures (20) is two, and the two drainage structures (20) are respectively arranged on the two inner shells (10).

13. A bladeless fan comprising a fan head according to any of claims 1 to 12.

14. A bladeless fan comprising a fan head according to claim 12, the bladeless fan further comprising a tap (50), the tap (50) comprising a front tap (51) and a rear tap (52), the front tap (51) and the rear tap (52) being mounted in correspondence; the inside of the split cone (50) is provided with a total air duct, a first air duct and a second air duct; the first air duct and the second air duct are respectively communicated with the total air duct; the first air channel is communicated with the air outlet air channel (111) of one inner shell (10), and the second air channel is communicated with the air outlet air channel (111) of the other inner shell (10).

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