CN215058326U

CN215058326U - Fan with cooling device

Info

Publication number: CN215058326U
Application number: CN202120837450.1U
Authority: CN
Inventors: 李享福
Original assignee: Shenzhen Jisu Technology Co Ltd
Current assignee: Shenzhen Jisu Technology Co Ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-12-07
Anticipated expiration: 2031-04-22

Abstract

An embodiment of the utility model provides a fan, fan includes casing and fan assembly. The shell comprises two annular first side wall structures which are arranged in parallel, an annular second side wall structure which is sleeved on the peripheries of the two first side wall structures, and a connecting part which is connected with the first side wall structures and the second side wall structures, the two first side wall structures, the second side wall structures and the connecting part are further used for enclosing two annular air ducts with central axes which are arranged in parallel and two air outlets which are respectively communicated with the two annular air ducts, and the air outlets are annular air outlets or comprise a plurality of sub air outlets which are annularly arranged corresponding to each annular air duct; the fan assembly is located in the shell and used for blowing out wind through the two annular wind channels and the corresponding air outlets.

Description

Fan with cooling device

Technical Field

The utility model relates to a fan technical field, especially a fan.

Background

Under hot weather or environment, in order to alleviate high temperature, sultry, the discomfort that the air does not circulate and bring, people can use electrical apparatus such as fan usually to drive the air flow to promote human comfort level, common fan on the market, vertical or sitting posture usually, under some special environment, like in the less environment of personal space such as office, vertical or sitting posture fan occupation space is great usually, is unsuitable for the use, and user experience is poor.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need for a fan with better user experience.

Compared with the prior art, the fan provided by the embodiment of the utility model comprises two annular first side wall structures which are arranged side by side, two annular second side wall structures which are sleeved on the peripheries of the first side wall structures, and two annular air ducts which are connected with the first side wall structures and the second side wall structures and are enclosed into the shell of the fan, and the fan component is contained in the shell, wherein the two first side wall structures, the second side wall structures and the connecting parts are also enclosed into two annular air ducts with central axes which are arranged side by side and two air outlets which are respectively communicated with the two annular air ducts, the fan component can blow out air through the two annular air ducts and the corresponding air outlets, thereby achieving the purposes of air outlet and cooling and making a user more comfortable, the fan component is wrapped in the shell, and making the fan safer when in use, the noise is littleer, and whole the structure of fan is more succinct, and occupation space is littleer, simultaneously, through the annular duct reaches annular air outlet blows off wind, makes the air-out of fan is close natural wind more, and it is more comfortable to make the user body feel when using, and user experience is better.

In one embodiment of the present invention, the casing further includes an extension portion connected to a side of the second side wall structure away from the connection portion and disposed opposite to the connection portion, an end of the extension portion away from the second side wall structure and ends of the two first side wall structures away from the connection portion respectively enclose two air outlets, and the air outlets are slit air outlets for discharging air toward the side where the connection portion is located; the two first side wall structures further enclose a hollow air outlet channel, and air outlet of the air outlet is blown out from one side of the connecting portion after accelerated convergence of the air outlet channel. Through setting up the air outlet is the orientation the slit formula air outlet of connecting portion place one side air-out can play the effect that carries out furthest's compression to the air-out, and can make annular wind channel is neighbouring the atmospheric pressure of air outlet part is greater than the outside atmospheric pressure of air outlet to form the negative pressure will air-out in the annular wind channel is pressed to the air outlet, makes the air-out speed faster, improves the air-out efficiency of fan, simultaneously, first lateral wall structure still encloses into hollow air-out passageway, makes the air-out of air outlet is in air-out passageway forms the annular and assembles the back, follows with higher speed one side at connecting portion place blows out, makes the air-out faster, accurate, concentrated, thereby reaches rapid cooling's purpose, improves the air-out efficiency of fan.

In one embodiment, the first side wall structure comprises a first arc-shaped side wall protruding towards the inner side, the second side wall structure comprises a second arc-shaped side wall protruding towards the side far away from the first side wall structure, and the distance between the first arc-shaped side wall and the second arc-shaped side wall gradually increases and then decreases along the direction from the connecting part to the extending part; the outer surface of the first arc-shaped side wall, which is far away from the second side wall structure, is an arc-shaped surface protruding towards the inner side and used for guiding the wind of the air outlet towards one side where the connecting part is located. By arranging the first side wall structure to comprise the first arc-shaped side wall protruding towards the inner side, the second side wall structure to comprise the second arc-shaped side wall protruding towards one side far away from the first side wall structure, and the distance between the first arc-shaped side wall and the second arc-shaped side wall gradually increases and then decreases along the direction from the connecting part to the extending part, the volume of the annular air duct can be increased, and simultaneously, the effect of compressing and accelerating the outlet air can be achieved, so that the outlet air of the air outlet can be blown out more quickly and can be cooled, in addition, the outer surface of the first arc-shaped side wall far away from the second side wall structure can be used for guiding the outlet air of the air outlet by virtue of the arc-shaped surface protruding towards the inner side, and after the outlet air of the air outlet is compressed and discharged, the arc-shaped surface can be punched down along the original direction under the action of inertia, the air near the arc-shaped surface is driven to rush down together, a boosting effect like a waterfall is formed, and the air outlet efficiency of the fan is improved.

In one embodiment, the housing further comprises a fan receiving cavity located between the two first side wall structures, two ends of the fan receiving cavity are respectively communicated with the two annular air ducts, and the fan assembly is located in the fan receiving cavity; the casing still include with the air intake of fan storage chamber intercommunication. Through inciting somebody to action the fan accomodates the chamber setting two between the first side wall structure, just the both ends that the chamber was accomodate to the fan respectively with two annular air duct intercommunication can make fan assembly blows in two the air-out simultaneously annular air duct improves when the air-out efficiency of fan, can make the air-out more balanced, improve human comfort level.

In one embodiment, the fan shaft of the fan assembly is parallel to the central axes of the two annular air ducts. The fan shaft of the fan assembly is arranged to be parallel to the central axes of the two annular air channels, so that the loss of the air outlet of the fan assembly in the annular air channels can be reduced to the maximum extent, and the air outlet efficiency of the fan is higher.

In one embodiment, the first side wall structure includes a first annular edge and a second annular edge that are disposed opposite to each other, the second side wall structure includes a third annular edge and a fourth annular edge that are disposed opposite to each other, the extending portion connects the fourth annular edge, a portion of the extending portion away from the fourth annular edge and the second annular edges of the two first side wall structures respectively enclose the two air outlets, and the air inlet is located on the second side wall structure, the connecting portion, or the extending portion. Through setting up with the extension that connecting portion set up relatively, just the extension is kept away from the part at fourth annular edge encloses into two respectively with two the second annular edge of first side wall structure the air outlet makes the air outlet with the distance in annular air duct is shorter, reduces the loss in the air-out process, just extension and two first side wall structure enclose into two the air outlet can make the overall structure of fan is succinct more, occupation space is littleer, makes the fan portable, accomodate, and application scope is wider.

In one embodiment, the connecting portion includes a first connecting portion connecting the first annular edge and the third annular edge, and a second connecting portion connecting the first annular edge and the third annular edge of the first sidewall structures, the second connecting portion includes a first main portion, a first edge portion and a second edge portion, the first edge portion is connected between the first main portion and one of the first sidewall structures, the second edge portion is connected between the first main portion and the other of the first sidewall structures, the first main portion is further connected to the third annular edge, the extending portions include a first extending portion disposed opposite to the first connecting portion and a second extending portion disposed opposite to the second connecting portion, and the second extending portion includes a second main portion, a second extending portion, A third edge portion and a fourth edge portion, the third edge portion being connected between one end of the second body portion and one end of the fourth annular edge and being opposite to the first edge portion, the fourth edge portion being connected between the other end of the second body portion and the other end of the fourth annular edge and being opposite to the second edge portion, the second body portion being further connected to the fourth annular edge, the air inlet being located on the second body portion, the first body portion, the second sidewall structure connecting the first body portion, the second body portion enclosing the fan receiving chamber, the first edge portion, the first connecting portion, the first sidewall structure, the second sidewall structure, the third edge portion enclosing one of the annular air ducts, the second edge portion, the second connecting portion enclosing one of the annular air ducts, The first side wall structure, the second side wall structure and the fourth edge portion enclose another annular air duct. The first connecting portion and the first extending portion are oppositely arranged, the second connecting portion and the second extending portion are oppositely arranged, and the air inlet is arranged on the second main body portion, the first main body portion, the second side wall structure connected with the first main body portion, and the second main body portion enclose the fan receiving cavity, the first edge portion, the first connecting portion, the first side wall structure, the second side wall structure, and the third edge portion enclose one annular air duct, the second edge portion, the second connecting portion, the first side wall structure, the second side wall structure, and the fourth edge portion enclose another annular air duct, so that the structure of the fan is simple, the air outlet of the fan is more balanced, and the air outlet efficiency of the fan is improved, and simultaneously, the service life of the fan is prolonged.

In one embodiment, the second sidewall structure comprises a first sidewall part, a second sidewall part, a third sidewall part and a fourth sidewall part which are sequentially connected in an annular mode, and the first sidewall part and the third sidewall part are oppositely arranged; the first side wall portion and the third side wall portion are respectively provided with two first portions which are oppositely arranged along the length direction and a second portion which is connected between the two first portions, the first portions are connected between the corresponding first connecting portions and the corresponding first extending portions, and the second portions are connected between the second connecting portions and the second extending portions.

In one embodiment, the second portion of at least one of the first and third sidewall portions is a third arcuate sidewall projecting away from an outer side of the first sidewall structure such that the shape of the fan receiving cavity is adapted to an outer contour of the fan assembly. Through setting up with the third arc lateral wall of fan unit's outline adaptation, can make fan unit can have suitable accommodation space, is convenient for fan unit works, improves the air-out efficiency of fan.

In one embodiment, the fan further comprises a fixing member for fixing the fan to an external object; the fixing piece comprises a first fixing piece and a second fixing piece, the first fixing piece is connected with the second side wall structure, the second fixing piece is connected with the second side wall structure, and the first fixing piece and the second fixing piece are used for clamping two sides of the external object; at least one of the first and second fixtures is pivotally coupled to the second sidewall structure. Through setting up first mounting with the second mounting can make the fan is fixed on external article such as computer, panel, and the user of being convenient for uses, has enlarged the application range of fan, user experience is better, simultaneously, first mounting with the centre gripping of second mounting the both sides of external object can increase the fan is with the fixed stability of external object, has ensured stability and the security of fan during operation, and, first mounting with at least one in the second mounting rotate connect in on the second lateral wall structure, can be through rotating first mounting with at least one in the second mounting is right the fan is fixed and is taken, and the user of being convenient for uses, and user experience is better.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view of a fan according to an embodiment of the present invention.

Fig. 2 is a perspective view of the fan shown in fig. 1 from another angle.

Fig. 3 is an exploded perspective view of the fan shown in fig. 1.

Fig. 4 is a sectional view of the fan shown in fig. 1.

Fig. 5 is a cross-sectional view of the fan shown in fig. 1 at another angle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

Referring to fig. 1 to 5, fig. 1 is a perspective view of a fan 1 according to an embodiment of the present invention. Fig. 2 is a perspective view of the fan 1 shown in fig. 1 at another angle. Fig. 3 is an exploded perspective view of the fan 1 shown in fig. 1. Fig. 4 is a sectional view of the fan 1 shown in fig. 1. Fig. 5 is a cross-sectional view of the fan shown in fig. 1 at another angle. The embodiment of the utility model provides a fan 1, fan 1 includes casing 10 and fan assembly 30.

The casing 10 includes two annular first side wall structures 11 arranged in parallel, an annular second side wall structure 12 sleeved on the peripheries of the two first side wall structures 11, and a connecting portion 13 connected to the first side wall structure 11 and the second side wall structure 12, the two first side wall structures 11, the second side wall structure 12, and the connecting portion 13 are further used for enclosing two annular air ducts 14 with central axes arranged in parallel and two air outlets 15 respectively communicated with the two annular air ducts 14, and the air outlets 15 are annular air outlets or include a plurality of sub air outlets annularly arranged corresponding to each annular air duct 14; the fan assembly 30 is located in the housing 10 and is used for blowing out wind through the two annular wind channels 14 and the corresponding wind outlets 15. It can be understood that the fan assembly 30 housed in the housing 10 can blow air into the two annular air ducts 14 during operation, and then the outlet air of the fan assembly 30 is blown out from the air outlet 15 through the guiding of the annular air ducts 14, so as to achieve the purposes of promoting air circulation and reducing ambient temperature. In this embodiment, the fan assembly 30 may be a turbine fan, and the turbine fan has the characteristics of large wind power and strong heat dissipation capability, and can output the maximum wind power in the minimum space and improve the heat dissipation effect. The air outlet 15 may be an annular air outlet, so that the air outlet range is wider, in other embodiments, the air outlet 15 may further include a plurality of sub air outlets corresponding to each of the annular air ducts 14, and by providing a plurality of sub air outlets corresponding to each of the annular air ducts 14, the dust, hair and other impurities are not easy to enter the fan 1 through the air outlet 15, so that the safety of the fan 1 is improved.

The embodiment of the present invention provides a fan 1, which comprises two annular first side wall structures 11 arranged side by side, two annular second side wall structures 12 sleeved on the peripheries of the first side wall structures 11, a connecting portion 13 connected to the first side wall structures 11 and the second side wall structures 12, a casing 10 of the fan 1 and a fan assembly 30 accommodated therein, wherein the two first side wall structures 11, the second side wall structures 12 and the connecting portion 13 further enclose two annular air ducts 14 with central axes arranged side by side and two air outlets 15 respectively communicated with the two annular air ducts 14, the fan assembly 30 can blow out wind through the two annular air ducts 14 and the corresponding air outlets 15, so as to achieve the purposes of cooling and discharging wind, and make a user more comfortable, the fan assembly 30 is wrapped inside the casing 10, so that the fan 1 is safer when in use, the noise is littleer, and whole fan 1's structure is more succinct, and occupation space is littleer, simultaneously, through annular duct 14 reaches annular air outlet blows off wind, makes fan 1's air-out is close natural wind more, and it is more comfortable to make the user body feel when using, and user experience is better.

Further, the housing 10 further includes an extending portion 18 connected to a side of the second sidewall structure 12 away from the connecting portion 13 and disposed opposite to the connecting portion 13, an end of the extending portion 18 away from the second sidewall structure 12 and ends of the two first sidewall structures 11 away from the connecting portion 13 respectively enclose two air outlets 15, and the air outlets 15 are slot type air outlets that discharge air toward a side where the connecting portion 13 is located; the two first side wall structures 11 further enclose a hollow air outlet channel 113, and the outlet air of the air outlet 15 is accelerated and converged in the air outlet channel 113 and then is blown out from the side where the connecting portion 13 is located. It can be understood that, in this embodiment, an end of the extension portion 18 away from the second sidewall structure 12 and an end of the two first sidewall structures 11 away from the connecting portion 13 respectively enclose two air outlets 15, where the air outlet 15 is a slit-type air outlet that discharges air towards a side where the connecting portion 13 is located, and can play a role of compressing the discharged air to the maximum extent, and can make the air pressure of a portion of the annular air duct 14 adjacent to the air outlet 15 greater than the air pressure outside the air outlet 15, so as to form a negative pressure that presses the discharged air in the annular air duct 14 towards the air outlet 15, so that the speed of discharged air is faster, the efficiency of discharged air of the fan 1 is improved, and meanwhile, in combination with the two first sidewall structures 11, a hollow air discharge channel 113 is further enclosed, and the discharged air of the air outlet 15 is converged, accelerated and guided in the air discharge channel 113, therefore, the outlet air of the air outlet 15 is accelerated and converged in the outlet air channel 113 and then is blown out from one side of the connecting part 13, so that the fan 1 achieves the maximum outlet air efficiency and is cooled rapidly. Through setting up air outlet 15 is the orientation the slit formula air outlet of connecting portion 13 place one side air-out can play and carry out furthest's compression effect to the air-out, and can make annular wind channel 14 is close to the atmospheric pressure of air outlet 15 part is greater than the atmospheric pressure of air outlet 15 outside to form the negative pressure with the air-out pressure in the annular wind channel 14 is to air outlet 15 makes air-out speed faster, improves fan 1's air-out efficiency, in addition, the hollow air-out passageway 113 that first lateral wall structure 11 encloses, the air-out of air outlet 15 can blow off the back the air-out passageway 113 is accelerated to be assembled the back and is blown out towards one side that connecting portion 13 was located, makes the air-out more accurate, concentrated, thereby reaches rapid cooling's purpose, improves fan 1's air-out efficiency.

Further, the first side wall structure 11 includes a first arc-shaped side wall 114 protruding toward the inner side, the second side wall structure 12 includes a second arc-shaped side wall 127 protruding toward the side far from the first side wall structure 11, and the distance between the first arc-shaped side wall 114 and the second arc-shaped side wall 127 gradually increases and decreases along the direction from the connecting portion 13 to the extending portion 18; the outer surface of the first arc-shaped sidewall 114 away from the second sidewall structure 12 is an arc-shaped surface protruding towards the inside, and is used for guiding the wind of the wind outlet 15 towards the side where the connecting portion 13 is located. It can be understood that, in this embodiment, the first sidewall structure 11 includes a first arc-shaped sidewall 114 protruding toward the inside, the second sidewall structure 12 includes a second arc-shaped sidewall 127 protruding toward the side away from the first sidewall structure 11, and the distance between the first arc-shaped sidewall 114 and the second arc-shaped sidewall 127 gradually increases and decreases along the direction from the connecting portion 13 to the extending portion 18, so as to maximize the volume of the annular air duct 14, and meanwhile, the outer surface of the first arc-shaped sidewall 114 away from the second sidewall structure 12 is an arc-shaped surface protruding toward the inside, so as to form a certain slope at the air outlet 15, so as to guide the air out of the air outlet 15 under the action of inertia. By arranging that the first sidewall structure 11 includes a first arc-shaped sidewall 114 protruding toward the inner side, the second sidewall structure 12 includes a second arc-shaped sidewall 127 protruding toward the side away from the first sidewall structure 11, and the distance between the first arc-shaped sidewall 114 and the second arc-shaped sidewall 127 gradually increases and decreases along the direction from the connecting portion 13 to the extending portion 18, the volume of the annular air duct 14 can be increased, and simultaneously, the volume of the annular air duct 14 can be increased, the outlet air of the outlet 15 can be blown out more quickly, and a certain compression and cooling effect can be achieved, in addition, the outer surface of the first arc-shaped sidewall 114 away from the second sidewall structure 12 can guide the outlet air of the outlet 15 for the arc-shaped surface protruding toward the inner side, and the design of the outlet 15 and the hollow outlet air channel 113 with the strip-shaped slits is combined, the air outlet of the air outlet 15 can be converged and accelerated after being compressed and discharged, the arc-shaped surface is rushed down along the original direction under the action of inertia, the air near the arc-shaped surface is driven to rush down together, the boosting effect like a waterfall is formed, and the air outlet efficiency of the fan 1 is improved.

Specifically, the housing 10 further includes a fan receiving cavity 16 located between the two first side wall structures 11, two ends of the fan receiving cavity 16 are respectively communicated with the two annular air ducts 14, and the fan assembly 30 is located in the fan receiving cavity 16; the housing 10 further includes an air inlet 17 communicating with the fan receiving chamber 16. Through inciting somebody to action the fan accomodates chamber 16 setting two between the first side wall structure 11, just the both ends that the chamber 16 was accomodate to the fan respectively with two annular wind channel 14 intercommunication can make fan assembly 30 blows in two with the air-out simultaneously annular wind channel 14 improves when the air-out efficiency of fan 1, can make the air-out more balanced, improve human comfort level.

Further, it is understood that the fan assembly 30 may be a turbofan assembly, and includes a fan shaft 31 and fan blades mounted on the periphery of the fan shaft 31, and the fan shaft 31 of the fan assembly 30 may be parallel to the central axes of the two annular air ducts 14 and perpendicular to the connecting portion 13 and the extending portion 18. By arranging the fan shaft 31 of the fan assembly 30 to be parallel to the central axes of the two annular air ducts 14, the loss of the outlet air of the fan assembly 30 in the annular air ducts 14 can be reduced to the greatest extent, and the outlet air efficiency of the fan 1 is higher.

Further, the first side wall structure 11 includes a first annular edge 111 and a second annular edge 112 that are disposed opposite to each other, the second side wall structure 12 includes a third annular edge 121 and a fourth annular edge 122 that are disposed opposite to each other, the extending portion 18 is connected to the fourth annular edge 122, a portion of the extending portion 18 away from the fourth annular edge 122 and the second annular edges 112 of the two first side wall structures 11 respectively enclose the two air outlets 15, and the air inlet 17 is located on the second side wall structure 12, the connecting portion 13, or the extending portion 18. In this embodiment, the air inlet 17 is located on the extension portion 18 of the extension direction of the fan shaft 31 of the fan assembly 30, so that the air inlet path and the air outlet path of the fan assembly 30 are shortest, and the air inlet efficiency and the air outlet efficiency of the fan assembly 30 are improved. Through setting up with the relative extension 18 that sets up of connecting portion 13, just extension 18 is kept away from the part and two at fourth edge the second edge of first side wall structure 11 encloses into two respectively air outlet 15 makes air outlet 15 with annular duct 14's distance is shorter, reduces the loss of air-out in-process, just extension 18 and two first side wall structure 11 encloses into two air outlet 15 can make fan 1's overall structure is succinct more, occupation space is littleer, makes fan 1 portable, accomodate, and application scope is wider.

Specifically, the connecting portion 13 includes a first connecting portion 131 connecting between the first annular edge 111 and the third annular edge 121, a second connecting portion 132 connecting between the two first annular edges 111 of the two first sidewall structures 11 and connecting the third annular edge 121, the second connecting portion 132 includes a first body portion 132a, a first edge portion 132b and a second edge portion 132c, the first edge portion 132b is connected between the first body portion 132a and one of the first sidewall structures 11, the second edge portion 132c is connected between the first body portion 132a and the other of the first sidewall structures 11, the first body portion 132a is further connected to the third annular edge 121, the extending portion 18 includes a first extending portion 181 disposed opposite to the first connecting portion 131 and a second extending portion 182 disposed opposite to the second connecting portion 132, the second extension part 182 includes a second body part 182a, a third edge part 182b and a fourth edge part 182c, the third edge part 182b is connected between the second body part 182a and one end of the fourth annular edge 122 and is opposite to the first edge part 132b, the fourth edge part 182c is connected between the second body part 182a and the other end of the fourth annular edge 122 and is opposite to the second edge part 132c, the second body part 182a is also connected to the fourth annular edge 122, the air inlet 17 is located on the second body part 182a, the first body part 132a, the second sidewall structure 12 connected to the first body part 132a, the second body part 182a enclose the fan receiving cavity 16, the first edge part 132b, the first connecting part 131 b, The first side wall structure 11, the second side wall structure 12 and the third edge portion 182b enclose one annular air duct 14, and the second edge portion 132c, the second connecting portion 132, the first side wall structure 11, the second side wall structure 12 and the fourth edge portion 182c enclose another annular air duct 14. By disposing the first connecting portion 131 and the first extending portion 181 oppositely, disposing the second connecting portion 132 and the second extending portion 182 oppositely, and disposing the air inlet 17 on the second main body portion 182a, the first main body portion 132a, the second side wall structure 12 connected to the first main body portion 132a, and the second main body portion 182a enclose the fan receiving chamber 16, the first edge portion 132b, the first connecting portion 131, the first side wall structure 11, the second side wall structure 12, and the third edge portion 182b enclose one annular air duct 14, the second edge portion 132c, the second connecting portion 132, the first side wall structure 11, the second side wall structure 12, and the fourth edge portion 182c enclose another annular air duct 14, the structure of the fan 1 can be more compact, still make fan 1's overall structure is more balanced, and then makes fan 1's air-out is more balanced, has improved fan 1's air-out efficiency has improved simultaneously fan 1's life.

Further, the second sidewall structure 12 includes a first sidewall portion 123, a second sidewall portion 124, a third sidewall portion 125 and a fourth sidewall portion 126 which are sequentially connected in a ring manner, wherein the first sidewall portion 123 and the third sidewall portion 125 are oppositely arranged; each of the first and third

side wall portions

123 and 125 has two first portions 123a oppositely disposed in a length direction and a second portion 123b connected between the two first portions 123a, the first portions 123a are connected between the corresponding first connecting portions 131 and the corresponding first extending portions 181, and the second portions 123b are connected between the second connecting portions 132 and the second extending portions 182.

In particular, the second portion 123b of at least one of the first and

third sidewall portions

123, 125 is a third arc-shaped sidewall 123d that projects towards the outside away from the first sidewall structure 11, such that the shape of the fan receiving cavity 16 is adapted to the outer contour of the fan assembly 30. In this embodiment, the second portions 123b of the first and

third sidewall portions

123 and 125 are both third arc-shaped sidewalls 123d protruding toward the outer sides away from the first sidewall structure 11, so that the second portions 123b of the first and

third sidewall portions

123 and 125 can form the shape of the fan receiving cavity 16 matching with the outer contour of the fan assembly 30, and the air inlet and outlet of the fan assembly 30 during operation are smoother and more uniform. Through setting up with the third arc lateral wall 123d of fan assembly 30's outline adaptation, can make fan assembly 30 can have suitable accommodation space, be convenient for fan assembly 30 works, improves fan 1's air-out efficiency.

Further, the fan 1 further comprises a fixing member 20 for fixing the fan 1 on an external object, the fixing member 20 comprises a first fixing member 21 and a second fixing member 22, the first fixing member 21 is connected with the second sidewall structure 12, the second fixing member 22 is connected with the second sidewall structure 12, and the first fixing member 21 and the second fixing member 22 are used for abutting (e.g. clamping) two sides of the external object; at least one of the first and

second fixtures

21 and 22 is rotatably coupled to the second sidewall structure 12. It can be understood that, in this embodiment, the fan 1 can be fixed (for example, clamped) on an external object through the fixing member 20, such as an edge of a display, a flat panel, or the like, and a push rod portion of the stroller, so as to blow air to the human body. The first fixing member 21 is connected to one end of the third annular edge 121 of the second side wall structure 12, which is adjacent to the first main body portion 132a, the second fixing member 22 is rotatably connected to the second side wall structure 12, which is spaced from the first fixing member 21 by a certain distance, when the fan 1 is used by a user, the first fixing member 21 of the fan 1 can be abutted against an external object to be clamped, such as a computer display screen, the first fixing member 21 can be clamped in front of the computer display screen, and then the second fixing member 22 is abutted against the back of the computer display screen, so that the first fixing member 21 and the second fixing member 22 clamp and fix the computer display screen together, and the fan 1 is fixed on the computer display screen. In this embodiment, the second fixing member 22 and the second sidewall structure 12 may be rotatably connected, and the distance between one end of the second fixing member 22 and the clamped external object may be changed by rotating the second fixing member 22, so as to conveniently clamp and fix the external object or remove the external object from the external object. Through setting up first mounting 21 with second mounting 22 can make fan 1 fixes on external article such as computer, panel, and the user of being convenient for uses, has enlarged fan 1's application range, and user experience is better, simultaneously, first mounting 21 with the centre gripping of second mounting 22 the both sides of external object can increase fan 1 and the fixed stability of external object have ensured fan 1 stability and the security of during operation, and, first mounting 21 with at least one rotation in the second mounting 22 connect in on second lateral wall structure 12, can be through rotating first mounting 21 with at least one in the second mounting 22 is right fan 1 fixes and takes, and the user of being convenient for uses, and user experience is better.

The fan disclosed by the embodiment of the present invention is described in detail above, and the principle and the implementation of the present invention are explained herein by applying specific examples, and the description of the above embodiments is only used to help understanding the fan and the core idea thereof; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, and in summary, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. A fan, characterized in that the fan comprises:

the air outlet is an annular air outlet or comprises a plurality of sub air outlets which are annularly arranged corresponding to each annular air channel;

and the fan assembly is positioned in the shell and is used for blowing out wind through the two annular wind channels and the corresponding wind outlets.

2. The fan according to claim 1, wherein the housing further includes an extension portion connected to a side of the second sidewall structure away from the connecting portion and disposed opposite to the connecting portion, an end of the extension portion away from the second sidewall structure and ends of the two first sidewall structures away from the connecting portion respectively define two air outlets, and the air outlets are slit air outlets for discharging air toward the side of the connecting portion; the two first side wall structures further enclose a hollow air outlet channel, and air outlet of the air outlet is blown out from one side of the connecting portion after accelerated convergence of the air outlet channel.

3. The fan as claimed in claim 2, wherein the first sidewall structure includes a first arc-shaped sidewall protruding toward an inner side, the second sidewall structure includes a second arc-shaped sidewall protruding toward a side away from the first sidewall structure, and a distance between the first arc-shaped sidewall and the second arc-shaped sidewall gradually increases and decreases in a direction from the connection portion to the extension portion; the outer surface of the first arc-shaped side wall, which is far away from the second side wall structure, is an arc-shaped surface protruding towards the inner side and used for guiding the wind of the air outlet towards one side where the connecting part is located.

4. The fan as claimed in claim 2, wherein the housing further comprises a fan receiving chamber located between the two first sidewall structures, both ends of the fan receiving chamber are respectively communicated with the two annular air ducts, and the fan assembly is located in the fan receiving chamber; the casing still include with the air intake of fan storage chamber intercommunication.

5. The fan of claim 4 wherein the fan axis of said fan assembly is parallel to the central axis of both of said annular air ducts.

6. The fan as claimed in claim 4, wherein the first sidewall structure includes a first annular edge and a second annular edge which are oppositely arranged, the second sidewall structure includes a third annular edge and a fourth annular edge which are oppositely arranged, the extension portion connects the fourth annular edges, a portion of the extension portion away from the fourth annular edges and the second annular edges of the two first sidewall structures respectively enclose the two air outlets, and the air inlet is located on the second sidewall structure, the connecting portion or the extension portion.

7. The fan as claimed in claim 6,

the connecting portion includes a first connecting portion connecting between the first annular rim and the third annular rim, a second connecting portion connecting between the two first annular rims of the two first sidewall structures and connecting the third annular rim,

the second connecting portion including a first body portion, a first edge portion connected between the first body portion and one of the first sidewall structures, and a second edge portion connected between the first body portion and the other of the first sidewall structures, the first body portion further connecting the third annular edge,

the extension part comprises a first extension part arranged opposite to the first connecting part and a second extension part arranged opposite to the second connecting part,

the second extension including a second body portion, a third edge portion connected between the second body portion and one end of the fourth annular rim and opposite the first edge portion, and a fourth edge portion connected between the second body portion and the other end of the fourth annular rim and opposite the second edge portion, the second body portion further connected to the fourth annular rim,

the air inlet is positioned on the second main body part,

the first body portion, the second side wall structure connected to the first body portion, the second body portion enclose the fan receiving cavity, the first edge portion, the first connecting portion, the first side wall structure, the second side wall structure, the third edge portion enclose one of the annular air ducts, and the second edge portion, the second connecting portion, the first side wall structure, the second side wall structure, the fourth edge portion enclose another of the annular air ducts.

8. The fan as claimed in claim 7, wherein the second sidewall structure comprises a first sidewall portion, a second sidewall portion, a third sidewall portion and a fourth sidewall portion which are sequentially connected in a loop, the first sidewall portion and the third sidewall portion being oppositely disposed; the first side wall portion and the third side wall portion are respectively provided with two first portions which are oppositely arranged along the length direction and a second portion which is connected between the two first portions, the first portions are connected between the corresponding first connecting portions and the corresponding first extending portions, and the second portions are connected between the second connecting portions and the second extending portions.

9. The fan of claim 8 wherein the second portion of at least one of the first and third sidewall portions is a third arcuate sidewall that projects toward an outer side away from the first sidewall structure such that the shape of the fan receiving cavity is adapted to an outer profile of the fan assembly.

10. The fan as claimed in claim 1, further comprising a fixing member for fixing the fan to an external object; the fixing piece comprises a first fixing piece and a second fixing piece, the first fixing piece is connected with the second side wall structure, the second fixing piece is connected with the second side wall structure, and the first fixing piece and the second fixing piece are used for clamping two sides of the external object; at least one of the first and second fixtures is pivotally coupled to the second sidewall structure.