CN218913240U - Base of bladeless fan, base assembly and bladeless fan - Google Patents

Abstract

The utility model relates to the technical field of fans, in particular to a base of a bladeless fan, a base assembly and the bladeless fan, wherein the base comprises a cylindrical main body which is integrally injection molded, front and rear side walls of the cylindrical main body are configured to be front and rear appearance surfaces of the base, and the top of the cylindrical main body is configured to be an air duct supporting part which is suitable for supporting an air duct assembly for installing the fan. The fan base that this application provided through injection moulding's setting, had both realized the wind channel subassembly of supporting the aircraft nose, has still integrated the front and back outward appearance face of base simultaneously, and bulk strength is good, and the assembly is simple, has still eliminated the surface gap defect that conventional a plurality of part equipment set up and bring simultaneously, and the outward appearance is more pleasing to the eye, has solved current fan base effectively and has adopted assembled atress support frame body structure assembly complicacy, and is with high costs, the poor problem of outward appearance.

Description

Base of bladeless fan, base assembly and bladeless fan

Technical Field

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

Background

Compared with the traditional electric fan, the bladeless fan has the characteristics of low noise, good safety and the like. The base of bladeless fan in the present market adopts a plurality of parts to assemble integrative package assembly mostly, and current base generally adopts preceding shell, backshell and support to constitute atress support frame body, and many parts interconnect makes overall structure intensity poor, and the assembly complicacy to many part assembly outward appearance can produce the installation and dodge the seam, influences holistic aesthetic property.

Disclosure of Invention

Therefore, the utility model aims to solve the technical problems that the base of the bladeless fan in the prior art adopts an integrally assembled structure with multiple parts, the assembly is complex, the appearance can generate an installation flashing seam, and the integral aesthetic property is affected, so that the base, the base component and the bladeless fan of the fan which are not required to be assembled and have strong integration and good appearance are provided.

In order to achieve the above object, in a first aspect, an embodiment of the present utility model provides a base of a bladeless fan, the base including an integrally injection molded cylindrical body, front and rear side walls of the cylindrical body being configured as front and rear appearance surfaces of the base, a top of the cylindrical body being configured as an air duct support portion adapted to support an air duct assembly to which the fan is mounted.

Optionally, a plurality of ribs are respectively configured on the outer wall surfaces of the front side wall and the rear side wall of the cylindrical main body so as to form a front appearance surface and a rear appearance surface of the base; and/or the upper opening and the lower opening of the cylindrical main body are arranged, the air inlet end at the bottom of the air duct component is suitable for extending into the cylindrical main body and is clamped and limited at the upper opening of the cylindrical main body, and the circumferential edge of the upper opening is suitable for clamping and limiting the air duct component to form the air duct supporting part.

Optionally, the top of the cylindrical main body is integrally provided with an air duct connecting structure for detachably connecting and fixing the air duct assembly, and the air duct connecting structure comprises a first clamping connecting structure and/or a first bolt connecting structure.

Optionally, a mounting cavity of the scroll casing assembly for accommodating the fan is formed inside the cylindrical main body, and a lower positioning plate for positioning the scroll casing assembly is integrally formed at the inner bottom position of the cylindrical main body;

the spiral case connecting structure is characterized in that a lower limiting opening through which the main body part of the spiral case assembly extends into the mounting cavity is formed in the middle of the lower positioning plate, the lower positioning plate is suitable for limiting the base part at the bottom of the spiral case assembly, and the spiral case connecting structure used for connecting and fixing the spiral case assembly is further integrally formed on the lower positioning plate.

Optionally, the position of the inside of tube-shape main part near upper end open-ended still integrated into one piece ground is provided with and is used for spacing the last limiting plate of spiral case subassembly, be equipped with on the last limiting plate and supply the air-out end of spiral case subassembly to pass in order to with the last limiting port of wind channel subassembly connection.

In a second aspect, an embodiment of the present utility model provides a base assembly of a bladeless fan, including the base of a bladeless fan and a filtering structure mounted on the base for filtering intake air, where left and right side walls of the cylindrical main body are configured as filter screen mounting portions adapted to mount the filtering structure and allow filtered air to enter the interior of the cylindrical main body.

Optionally, the filter screen installation part includes the filter screen holding groove that left and right sides wall part indent formed of tube-shape main part, the left and right sides wall of tube-shape main part is last corresponds the regional fretwork setting of filter screen holding groove.

Optionally, the left and right side walls of the tubular main body are further integrally provided with a filter screen connecting structure for detachably connecting and fixing the filter structure, and the filter screen connecting structure comprises a second clamping connecting structure and/or a third bolt connecting structure.

Optionally, the filtering structure comprises: the filter screen main body is embedded and arranged in a filter screen accommodating groove formed by the left side wall and the right side wall of the cylindrical main body; the decorative side plate is covered on the outer side of the filter screen main body and detachably connected and fixed on the cylindrical main body.

In a third aspect, an embodiment of the present utility model provides a fan, including the base, further including: the volute component is arranged and limited in the cylindrical main body of the base, and the air outlet end of the volute component extends into a position close to the top opening of the cylindrical main body; the air duct component is arranged above the cylindrical main body, and the air inlet end of the air duct component is in butt joint with the air outlet end of the volute component.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

according to the fan base provided by the embodiment of the utility model, the tubular main body is integrally formed by injection molding, the top of the tubular main body is configured to be suitable for supporting the air duct supporting part of the air duct assembly for installing the fan, the front side wall and the rear side wall of the tubular main body are configured to be the front appearance surface and the rear appearance surface of the base, the air duct assembly for supporting the machine head is realized, the front appearance surface and the rear appearance surface of the base are integrated, the integral strength is good, the assembly is simple, the surface gap defect caused by assembling and arranging a plurality of conventional parts is eliminated, the appearance is more attractive, and the problems that the assembly is complex, the cost is high and the appearance is poor due to the fact that the conventional fan base adopts an assembled stressed support frame structure are effectively solved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic front view of a bladeless fan according to an embodiment of the present utility model;

FIG. 2 is a partial cross-sectional view of a bladeless fan according to an embodiment of the present utility model;

FIG. 3 is an exploded isometric view of a bladeless fan according to an embodiment of the present utility model;

FIG. 4 is an exploded front view of a bladeless fan according to an embodiment of the present utility model;

FIG. 5 is a side view of a base of a bladeless fan according to an embodiment of the present utility model;

FIG. 6 is a top view of a base of a bladeless fan according to an embodiment of the present utility model;

FIG. 7 is a bottom view of the base of the bladeless fan according to the embodiment of the present utility model;

reference numerals:

1. a base assembly;

10. a base; 101. a front face; 102. a rear appearance surface; 103. an upper opening; 104. a lower opening; 105. an air duct support part; 106. a filter screen mounting part;

11. an air duct connecting structure;

12. a lower positioning plate; 121. a lower limit port; 122. a second bolt post;

13. an upper limit plate; 131. an upper limit opening;

14. a filter screen connecting structure; 141. a clamping hole;

20. a filter screen body; 30. a decorative side plate; 301. a fixing buckle;

2. a volute assembly; 21. an air outlet; 22. a seat portion;

3. an air duct assembly; 31. a first screw fitting hole; 32. a positioning seat; 33. an air inlet;

4. a chassis assembly.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by a worker of ordinary skill in the art without making any inventive effort, are intended to be within the scope of this utility model based on the embodiments of this utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, or can be communicated inside the two components, or can be connected wirelessly or in a wired way. The specific meaning of the above terms in the present utility model can be understood in a specific case by a worker of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

As shown in fig. 1 to 7, an embodiment of the present utility model provides a base 10 of a bladeless fan, the base 10 including an integrally injection molded cylindrical body, front and rear side walls of the cylindrical body being configured as front and rear outer appearance surfaces of the base 10, and a top of the cylindrical body being configured as an air duct support 105 adapted to support an air duct assembly 3 to which the fan is mounted. The base 10 of the bladeless fan provided in this embodiment not only realizes the air duct component 3 supporting the machine head, but also integrates the front and rear appearance surfaces of the base 10, has good overall strength and simple assembly, and simultaneously eliminates the surface gap defect brought by the base 10 assembled by a plurality of conventional parts, so that the appearance is more attractive, and the problems that the existing base 10 of the bladeless fan needs to be assembled integrally by a plurality of parts, and has complex assembly, high cost and poor appearance are effectively solved.

Optionally, in this embodiment, the cylindrical main body gradually increases from top to bottom, and the base 10 adopts the design of the round table structure with the small top and the large bottom, so that the support stability of the base 10 can be increased, and the base is not easy to fall.

Alternatively, a plurality of ribs are respectively formed on the outer wall surfaces of the front and rear side walls of the cylindrical body to form the front and rear exterior surfaces 101 and 102 of the base 10. The convex rib and the cylindrical main body are integrally formed and formed by protruding outwards from the front side wall and the rear side wall of the cylindrical main body.

Specifically, the ribs are vertical ribs, the front side wall of the cylindrical body is configured with a plurality of ribs to form the front appearance surface 101 of the base 10, and the rear side wall of the cylindrical body is configured with a plurality of ribs to form the rear appearance surface 102 of the base 10. Through the bead structure that sets up at the front and back lateral wall of base 10, on the one hand can increase the structural strength of base 10, on the other hand also can increase frictional force, makes things convenient for the user to hold base 10 and moves bladeless fan with hands.

Optionally, the upper opening and the lower opening of the tubular body are arranged, the air inlet end at the bottom of the air duct assembly 3 is suitable for extending into the tubular body and is clamped and limited at the upper opening 103 of the tubular body, and the circumferential edge of the upper opening 103 is suitable for clamping and limiting the air duct assembly 3 to form the air duct supporting part 105.

Alternatively, in a preferred embodiment of the above aspect, the peripheral edge of the upper opening 103 may be turned outwards to form an annular turned edge. The turnover edge is suitable for clamping and limiting the air duct assembly 3, and the air duct supporting part 105 comprises the turnover edge. The structural strength of the upper opening 103 can be improved through the design of the turnover edge, and the scraping problem caused by the fact that the edge of the opening is directly supported and contacted with the air duct assembly 3 can be effectively avoided.

Further, the lower end of the air duct assembly 3 is an air inlet end, and the air inlet end is suitable for extending into the base 10 and being connected with the air outlet end of the volute assembly 2 in the base 10. The bottom of the air duct assembly 3 is provided with an annular positioning seat 32, the air inlet end of the air duct assembly 3 is positioned in the middle of the positioning seat 32 and protrudes out of the positioning seat 32, a circle of annular limiting steps are formed on the periphery of the positioning seat 32 and are suitable for being abutted against and limited on the air duct supporting portion 105 so as to form a limiting support of the base 10 and the air duct assembly 3.

Further, as shown in fig. 2 to 4, the positioning seat 32 includes an annular stop portion disposed horizontally and an insertion protruding portion fixedly disposed on a bottom surface of the annular stop portion, and the insertion protruding portion is annular, adapted to be inserted into the cylindrical body, and is positioned in a circumferential direction with an inner periphery of the opening 103 of the cylindrical body. The annular stop is adapted to abut against the rim of the upper opening 103 or the turnup to limit the downward displacement of the air duct assembly 3.

Optionally, the top of the cylindrical main body is integrally provided with an air duct connecting structure 11 for detachably connecting and fixing the air duct assembly 3, and the air duct connecting structure 11 comprises a first clamping connecting structure and/or a first bolt connecting structure. The air duct connecting structure 11 can effectively fix the air duct assembly 3, and the air duct connecting structure 11 adopts the design of a clamping connecting structure and/or a bolt connecting structure, so that the air duct assembly 3 can be conveniently disassembled and assembled.

Optionally, the first clamping connection structure includes, but is not limited to, a claw, a buckle, a clamping hole, or a clamping groove. The first bolting configuration includes, but is not limited to, a screw hole and a bolting post.

Optionally, in this embodiment, the air duct connection structure 11 adopts a design of a bolt connection structure, specifically, the air duct connection structure 11 includes a first screw hole formed in a circumferential direction of the cylindrical main body, a first bolt post or a first bolt matching hole matched with the first screw hole is correspondingly disposed at a bottom of the air duct assembly 3, and the air duct assembly 3 and the cylindrical main body are adapted to be fixed by bolting.

Alternatively, the first screw hole is formed on the left and right side walls of the cylindrical body and is located near the upper opening 103. At least one first screw hole is respectively formed in the left side wall and the right side wall of the cylindrical main body. Preferably, the left and right side walls of the cylindrical main body are respectively provided with two first screw holes at intervals.

Optionally, as shown in fig. 3, a positioning seat 32 at the bottom of the air duct assembly 3 is provided with a first screw matching hole 31 that matches with the first screw hole. The first screw fitting hole 31 is formed on the insertion protruding portion of the positioning seat 32 corresponding to the first screw hole. The number of the first screw fitting holes 31 is the same as that of the first screw holes, and the positions are in one-to-one correspondence. Alternatively, in other embodiments, a connecting rib extending downward in a protruding manner may be fixedly disposed on the bottom circumference of the positioning seat 32, and the connecting rib may be provided with the first screw fitting hole 31.

Optionally, as shown in fig. 3, 4 and 7, the inside of the cylindrical body is configured as a mounting cavity for accommodating the volute assembly 2 of the fan, and a lower positioning plate 12 for positioning the volute assembly 2 is integrally formed at the inner bottom of the cylindrical body; the middle of the lower positioning plate 12 is provided with a lower limit opening 121 through which the main body part of the volute component 2 extends into the mounting cavity, the lower positioning plate 12 is suitable for limiting the seat part 22 at the bottom of the volute component 2, and the lower positioning plate 12 is also integrally provided with a volute connecting structure for connecting and fixing the volute component 2.

Specifically, as shown in fig. 3 and 7, the lower positioning plate 12 includes two symmetrical positioning plates in the cylindrical main body, a set space is provided between the two lower positioning plates 12, the space forms a lower limiting opening 121, and a top main body portion of the volute component 2 can extend into the cylindrical main body from the lower limiting opening 121, so that an air outlet end of the volute component is connected with an air inlet end of the top air duct component 3. The volute connecting structure is a second bolt post 122 integrally formed on the bottom surface of the lower positioning plate 12. The base portion 22 at the bottom of the volute component 2 is correspondingly provided with a second screw hole matched with the second bolt post 122.

Optionally, two second bolt posts 122 are disposed on the two lower locating plates 12 at intervals, and the seat portion 22 has a disc structure, and two screw holes are correspondingly disposed on two sides of the disc structure.

Optionally, as shown in fig. 2, 3 and 6, an upper limiting plate 13 for limiting the volute component 2 is further integrally formed in the cylindrical main body near the upper end opening, and an upper limiting opening 131 through which the air outlet end of the volute component 2 passes is formed in the upper limiting plate 13. The upper limiting plate 13 is used for limiting upward displacement of the volute component 2, and an air outlet end at the top of the volute component 2 extends into the upper limiting opening 131 and is connected with an air inlet end of the air duct component 3.

Alternatively, as shown in fig. 2 and 6, the upper limiting plate 13 is a circular plate integrally formed at the upper end of the cylindrical body, and the circular plate is provided with the upper limiting opening 131.

Optionally, the volute component 2 includes a casing and a worm wheel disposed in the casing, an air outlet tube is formed at an air outlet end of the top of the casing, a shape of the upper limit opening 131 is adapted to a shape of the air outlet tube, and an end opening of the air outlet tube is an air outlet 21 of the volute component 2. The air inlet end of the air duct assembly 3 is provided with an air inlet 33 which is butted with the air outlet 21 of the volute assembly 2.

Alternatively, as shown in fig. 6, the upper limit opening 131 is a rectangular opening.

The base 10 provided in this embodiment is through adopting the design of integrated tube-shape main part, supports the wind channel subassembly 3 of aircraft nose, connects the spiral case subassembly 2 of air supply through single part, and it is many to solve current base 10 atress support frame body part, needs many parts to connect the assembly, and the assembly is complicated, and the man-hour cost is high, and the integration is not strong, the poor problem of intensity. Meanwhile, the base 10 is integrated with the front and rear appearance surfaces 102, so that the assembly is simple, the appearance gap is good, and the problem that the appearance surface of the existing base 10 needs to be assembled in multiple stages and the appearance gap is poor is solved.

Example two

As shown in fig. 1 to 7, the present embodiment provides a bladeless fan base assembly 1, which includes a bladeless fan base 10 according to the first embodiment and a filtering structure mounted on the base 10 for filtering inlet air, wherein the left and right side walls of the cylindrical main body are configured to be suitable for mounting the filtering structure and to allow filtered air to enter the filter screen mounting portion 106 inside the cylindrical main body.

Alternatively, as shown in fig. 3 to 5, the filter screen mounting portion 106 includes a filter screen accommodating groove formed by recessing left and right side walls of the cylindrical main body, the filter screen main body 20 of the filter structure is embedded and mounted in the filter screen accommodating groove, and hollow areas corresponding to the filter screen accommodating groove on the left and right side walls of the cylindrical main body are disposed. And a plurality of ventilation small holes are formed in the left side wall and the right side wall of the cylindrical main body in the areas corresponding to the filter screen accommodating grooves. Through adopting the design of fretwork can make the air after the filtration structure filters can pierce through the lateral wall of tube-shape main part and enter into the tube-shape main part inside, be linked together with the air inlet end of the inside spiral case subassembly 2 of tube-shape main part.

In the above-described aspect, the screen mounting portions 106 are provided on the left and right side walls of the tubular body, respectively. The filtering structure has two groups, and is correspondingly arranged on the filter screen mounting parts 106 at two sides. In this embodiment, the side wall of the cylindrical main body is subjected to the process designs such as profiling, stamping and the like, so that the filtering structure can be installed, and air can be supplied to pass through the filtering structure, so that the base 10 integrates multiple functions into a whole, and the integration is stronger.

Optionally, the left and right side walls of the cylindrical main body are integrally provided with a filter screen connecting structure 14 for detachably connecting and fixing the filter structure.

Optionally, the screen attachment structure 14 includes, but is not limited to, a claw, a buckle, a snap-in hole, a snap-in groove, a screw hole, or a bolt post.

Optionally, the filtering structure comprises: the filter screen comprises a filter screen main body 20 and a decorative side plate 30, wherein the filter screen main body 20 is embedded and arranged in a filter screen accommodating groove formed by the left side wall and the right side wall of the cylindrical main body; the decorative side plate 30 is covered on the outer side of the filter screen main body 20 and detachably connected and fixed on the cylindrical main body. The size area of the decorative side plate 30 is larger than that of the filter screen main body 20, and the decorative side plate 30 can cover and shade the filter screen main body 20.

Optionally, the filter screen connecting structure 14 includes a clamping connection structure integrally disposed on the left and right side walls of the cylindrical main body, the clamping connection structure includes clamping holes 141 formed on the left and right side walls of the cylindrical main body, the clamping holes 141 have two groups disposed at an upper and lower interval, the upper and lower sides of the decorative side plate 30 are correspondingly provided with fixing buckles 301 matched with the clamping holes 141, and the positions of the two groups of clamping holes 141 correspond to the fixing buckles 301 on the upper and lower sides of the decorative side plate 30. During assembly, the two filter screen bodies 20 are firstly installed in the filter screen accommodating grooves on the left side and the right side of the base 10, and then the fixing buckles 301 on the two decoration side plates 30 are correspondingly clamped in the clamping holes 141 on the two sides of the base 10, so that the clamping assembly of the decoration side plates 30 is realized, and meanwhile, the clamping fixation of the filter screen bodies 20 is realized.

In other embodiments, the filter screen connection structure 14 may be a clamping groove or a clamping structure, and is matched with the fixing buckle 301 to implement the clamping connection between the decorative side plate 30 and the cylindrical main body.

Optionally, the decorative side plate 30 is also hollow, and a plurality of ventilation holes are formed in the decorative side plate 30 for allowing outside air to enter.

Optionally, the outer surface of the decorative side plate 30 is configured to have the same color as the front and rear appearance surfaces of the base 10, and the outer surface of the decorative side plate 30 is also configured with a rib same as the front and rear appearance surfaces of the base 10, so that the base 10 and the filter screen assembly are integrated, and the appearance is more integrated and attractive. In this embodiment, the decorative side plate 30 can not only shield the filter screen main body 20 but also fix the filter screen main body 20, thereby improving the stability of the structure of the filter screen main body 20, and can also be used as the appearance surfaces of the left and right sides of the base 10.

Example III

As shown in fig. 1 to 7, an embodiment of the present utility model provides a fan, which includes the above-mentioned base 10, and further includes a volute component 2 and a duct component 3, where the volute component 2 is mounted and limited in a cylindrical main body of the base 10, and an air outlet end of the volute component 2 extends into a position close to an opening at the top of the cylindrical main body; the air duct component 3 is arranged above the cylindrical main body, and the air inlet end of the air duct component is in butt joint with the air outlet end of the volute component 2. The positioning seat 32 arranged at the bottom of the air duct assembly 3 is clamped and limited to the air duct supporting part 105 formed at the top of the cylindrical main body, namely, the upper opening 103 of the cylindrical main body. The air inlet 33 of the air duct assembly 3 extends into the cylindrical main body and is in butt joint with the air outlet 21 of the volute assembly 2.

Optionally, in this embodiment, two sides of the volute component 2 are respectively provided with an air inlet end adapted to be butted with the hollowed-out areas on the left and right side walls of the cylindrical main body, so as to be adapted to suck the filtered air into the volute component 2.

Optionally, in this embodiment, the fan further includes a chassis assembly 4, and the chassis assembly 4 is disposed below the volute assembly 2 and is rotatably connected with the volute assembly 2.

The air inlet sequence of the bladeless fan in this embodiment is as follows: outside air-decorative side plate 30-filter screen main body 20-base 10-spiral case subassembly 2-wind channel subassembly 3-outside air.

Specifically, the working of the volute assembly 2 sucks the external air through the hollow ventilation holes on the decorative side plates 30 on the two sides, the external air passes through the hollow ventilation holes on the left and right side walls of the cylindrical main body after being filtered by the filter screen main body 20, enters the cylindrical main body, is sucked by the air inlet end of the volute assembly 2, is conveyed to the air inlet 33 of the air duct assembly 3 through the air guide channel of the volute, and is discharged to the external environment through the air outlet 21 of the air duct assembly 3.

The assembly process of the bladeless fan in this embodiment is as follows:

firstly, the pre-assembled volute assembly 2 is installed in the base 10 from bottom to top, the air outlet 21 of the volute assembly 2 is installed in the upper limit opening 131 of the upper limit plate 13 of the base 10, and the base body part 22 of the volute assembly 2 is limited at the lower limit opening 121 of the lower locating plate 12 of the base 10 to finish the locating of the volute assembly 2 from bottom to top. The assembly of the volute assembly 2 with the base 10 is then achieved by four screws sequentially passing through the second screw holes in the housing portion 22 of the volute assembly 2 and the second stud 122 in the lower locating plate 12, and then mounting the chassis assembly 4 on the volute assembly 2.

Then, the pre-assembled air duct assembly 3 is assembled on the base 10 which is assembled from top to bottom, the air inlet 33 of the air duct assembly 3 is aligned with the air outlet 21 of the volute assembly 2, the annular positioning seat 32 at the bottom of the air duct assembly 3 is aligned with the upper opening 103 of the base 10, compressed air in the volute assembly 2 can be transferred into the air duct assembly 3 through the air outlet 21 of the volute assembly 2 and the air inlet 33 of the air duct assembly 3, positioning assembly of the air duct assembly 3 and the base 10 is realized, and four first screw holes on the left side and the right side of the base 10 are penetrated through four screws to be fixed on the first screw matching holes 31 of the air duct assembly 3, so that fixed assembly of the air duct assembly 3 is completed.

Finally, the two filter screen bodies 20 are mounted in the filter screen accommodating grooves on the left and right side walls of the base 10, and the fixing buckles 301 on the two decoration side plates 30 are clamped into the clamping holes 141 of the base 10, so that the clamping assembly of the decoration side plates 30 is realized. The front appearance surface 101, the rear appearance surface 102 and the two decoration side plates 30 of the base 10 jointly form the appearance surface of the base assembly 1, and the filter screen main body 20 and the decoration side plates 30 are detachable parts, so that a user can conveniently replace filter screen consumables.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the various aspects of the utility model will be apparent to persons of ordinary skill in the art upon reading the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (10)

1. A base of a bladeless fan, characterized in that the base (10) comprises a cylindrical body which is integrally injection molded, the front and rear side walls of the cylindrical body are configured as front and rear appearance surfaces of the base (10), and the top of the cylindrical body is configured as an air duct supporting part (105) which is suitable for supporting an air duct assembly (3) for installing the fan.

2. The base of a bladeless fan according to claim 1, wherein a plurality of ribs are respectively formed on outer wall surfaces of front and rear side walls of the cylindrical body to form a front exterior surface (101) and a rear exterior surface (102) of the base (10);

and/or the upper opening and the lower opening of the tubular main body are arranged, the bottom air inlet end of the air duct component (3) is suitable for extending into the tubular main body and is clamped and limited at the upper opening (103) of the tubular main body, and the circumferential edge of the upper opening (103) is suitable for clamping and limiting the air duct component (3) to form the air duct supporting part (105).

3. The base of a bladeless fan according to claim 1 or 2, characterized in that the cylindrical body top is further integrally provided with a duct connection structure (11) for detachably connecting and securing the duct assembly (3).

4. The base of a bladeless fan according to claim 1 or 2, characterized in that the interior of the cylindrical body is configured as a mounting cavity for housing a fan's volute assembly (2), the inside bottom position of the cylindrical body being further integrally provided with a lower positioning plate (12) for positioning the volute assembly (2);

the spiral case connecting structure is characterized in that a lower limiting opening (121) through which the main body part of the spiral case assembly (2) extends into the mounting cavity is formed in the middle of the lower positioning plate (12), the lower positioning plate (12) is suitable for limiting the base part (22) at the bottom of the spiral case assembly (2), and the spiral case connecting structure used for connecting and fixing the spiral case assembly (2) is further integrally formed on the lower positioning plate (12).

5. The base of a bladeless fan according to claim 4, wherein an upper limiting plate (13) for limiting the volute component (2) is integrally formed in the cylindrical main body at a position close to the upper end opening, and an upper limiting opening (131) through which the air outlet end of the volute component (2) can pass is formed in the upper limiting plate (13).

6. A bladeless fan base assembly comprising a bladeless fan base (10) according to any of claims 1 to 5 and a filter structure mounted on the base (10) for filtering the inlet air;

the left and right side walls of the tubular body are configured as screen mounting portions (106) adapted to mount the filter structure and allow filtered air to enter the interior of the tubular body.

7. The base assembly of a bladeless fan according to claim 6, wherein the filter screen mounting portion (106) includes a filter screen accommodating groove formed by recessing left and right side walls of the tubular main body, and the left and right side walls of the tubular main body are hollowed out in areas corresponding to the filter screen accommodating groove.

8. The bladeless fan base assembly according to claim 7, wherein the left and right side walls of the cylindrical body are further integrally provided with a screen attachment structure (14) for detachably attaching and securing the filtering structure.

9. The bladeless fan base assembly of claim 7, wherein the filtering structure includes:

the filter screen main body (20) is embedded and arranged in a filter screen accommodating groove formed by the left side wall and the right side wall of the cylindrical main body;

the decorative side plate (30) is shielded outside the filter screen main body (20) and detachably connected and fixed on the cylindrical main body.

10. A bladeless fan comprising the base assembly of any of claims 6-9, further comprising:

the volute component (2) is arranged and limited in the cylindrical main body of the base (10), and the air outlet end of the volute component (2) extends into a position close to the top opening of the cylindrical main body;

the air duct assembly (3), the air duct assembly (3) is installed above the cylindrical main body, and the air inlet end of the air duct assembly is in butt joint with the air outlet end of the volute assembly (2).

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