CN217152340U

CN217152340U - Hanging neck fan

Info

Publication number: CN217152340U
Application number: CN202121320272.1U
Authority: CN
Inventors: 陈海东; 李伟平; 宋国伟; 李彤
Original assignee: Shenzhen Magic Cube Digital Technology Co ltd
Current assignee: Shenzhen Magic Cube Digital Technology Co ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2022-08-09
Anticipated expiration: 2031-06-11

Abstract

The utility model provides a hang neck fan, wear the frame and accept in including the neck fan wheel in the frame is worn to the neck, the neck is worn the frame and is included first body and second body, be equipped with the fan wheel in first body and the second body respectively and separate the baffle that forms first wind channel and second wind channel with its inner space, be equipped with the switch button of control the fan wheel work on first body and the second body respectively, with the first air outlet of first wind channel intercommunication and with the second air outlet of second wind channel intercommunication, the switch button is used for controlling corresponding first body and the fan wheel in the second body respectively and is in corotation mode or reversal mode, when the fan wheel is in corotation mode, the air current that corresponds the fan wheel formation blows off from the first air outlet via the first wind channel; when the fan wheel is in the reverse rotation mode, the airflow formed by the fan wheel is blown out of the second air outlet through the second air duct.

Description

Hanging neck fan

Technical Field

The utility model relates to the technical field of fans, in particular to hang neck fan.

Background

In recent years, people are pursuing more convenient life, and various portable fans such as neck-band fans appear on the market in order to meet the requirement that the fans are needed to be used in outdoor activities or other life scenes. The activity limitation that handheld fan brought has been solved in appearance of neck belt fan, no matter be sports, outdoor activities or use scenes such as office, the both hands of user can all be liberated to the neck belt fan, need not handheld effect that can realize blowing anytime and anywhere.

The existing blowing mode of the neck-band type fan is generally used for blowing air to adjust the temperature of a certain specified part, the blowing mode is single, the applicable use scene is limited, and the user experience is influenced.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem that exists now, the utility model provides a can diversified air-out, can satisfy more different user demands's under the use scene hang neck fan.

In order to achieve the above object, the embodiment of the present invention provides a technical solution that:

a neck hanging fan comprises a neck wearing frame and a fan wheel accommodated in the neck wearing frame, wherein the neck wearing frame comprises a first body and a second body, the first body and the second body are respectively provided with the fan wheel and a partition plate for partitioning the inner space of the fan wheel into a first air channel and a second air channel, the first body and the second body are respectively provided with a switch key for controlling the fan wheel to work, a first air outlet communicated with the first air channel and a second air outlet communicated with the second air channel, the switch key is respectively used for controlling the corresponding fan wheel in the first body and the second body to be in a forward rotation mode or a reverse rotation mode, and when the fan wheel is in the forward rotation mode, air flow formed by the corresponding fan wheel is blown out from the first air outlet through the first air channel; when the fan wheel is in the reverse rotation mode, the airflow formed by the fan wheel is blown out of the second air outlet through the second air duct.

The partition board in the first body and the second body is provided with a volute tongue part at one end close to the fan wheel, the volute tongue part comprises a flow guide surface facing the fan wheel, and a first volute tongue surface and a second volute tongue surface which are respectively connected between two opposite ends of the flow guide surface and the side surface of the partition board, and included angles between the first volute tongue surface and the flow guide surface and included angles between the second volute tongue surface and the flow guide surface are respectively acute angles.

The first volute tongue surface and the second volute tongue surface are respectively curved surfaces.

The first volute tongue surface and the second volute tongue surface are formed by sequentially connecting a plurality of curved surfaces with different radiuses, and the radiuses of the curved surfaces are gradually increased from one end connected with the flow guide surface to one end of the partition plate.

The flow guide surface is a cambered surface which is concave towards the direction far away from the fan wheel.

The first body and the second body are respectively provided with a control circuit, the control circuit comprises a controller and a driving circuit connected with the controller, the driving circuit comprises a first input end and a second input end for receiving an output signal of the controller, and a first output end and a second output end which are respectively connected with the positive pole and the negative pole of the fan wheel, and the controller is connected with the switch key;

the controller outputs a high level signal to the first input end and outputs a low level signal to the second input end according to a key instruction of controlling the fan wheel to work in the forward rotation mode by the switch key, so that the first output end is a positive output end and the second output end is a negative output end;

the controller outputs a low level signal to the first input end and outputs a high level signal to the second input end according to a key instruction of the switch key to control the fan wheel to work in the reverse mode, so that the first output end is a negative output end and the second output end is a positive output end.

The partition plates respectively extend along the length directions of the corresponding first body and the corresponding second body, and the extending directions of the first air duct and the second air duct are respectively the same as the extending direction of the partition plates.

The first air outlet comprises a plurality of first air outlet holes which are arranged along the extending direction of the first air duct at intervals, and the second air outlet comprises a plurality of second air outlet holes which are arranged along the extending direction of the second air duct at intervals.

The fan wheel is respectively arranged at the tail ends of the first body and the second body, the side walls of the first body and the second body are respectively provided with an air inlet at the position corresponding to the fan wheel, and the air inlets comprise air inlet holes which are arranged in a circular ring shape and correspond to the fan blade parts of the fan wheel.

The neck wearing frame further comprises a neck winding section, and the first body and the second body are connected with two opposite ends of the neck winding section respectively.

The embodiment of the utility model provides a hang neck fan, through setting up the switch button respectively control the fan wheel in first body and the second body and be in corotation mode or reversal mode, when making the fan wheel be in the corotation mode, the air current that corresponds fan wheel formation blows off from first air outlet via first wind channel; when the impeller is in the reversal mode, the air current that corresponds impeller formation blows off from the second air outlet via the second wind channel, so, the impeller in first body and the second body can work in corotation mode or reversal mode respectively, outwards air-out through first air outlet or second air outlet with adjusting the first body, and outwards air-out through first air outlet or second air outlet with adjusting the second body, the user can select first body and second body to provide different air-out position respectively, form multiple air-out mode, thereby can satisfy user's different user demands under more use scenes.

Drawings

FIG. 1 is a schematic view of a neck hanging fan in one embodiment;

FIG. 2 is an exploded view of the neck hanging fan according to one embodiment;

FIG. 3 is another exploded view of the neck hanging fan according to one embodiment;

FIG. 4 is another exploded view of the neck hanging fan according to one embodiment;

FIG. 5 is an enlarged view of the circled portion of FIG. 4;

fig. 6 is a circuit diagram of a control circuit of the neck hanging fan according to an embodiment.

Detailed Description

The technical solution of the present application is further described in detail with reference to the drawings and specific embodiments of the specification.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of implementations of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 4, an embodiment of the present application provides a neck hanging fan, which includes a neck wearing frame 10 and a fan wheel 20 accommodated in the neck wearing frame 10, the neck wearing frame 10 comprises a first body 11 and a second body 12, wherein the first body 11 and the second body 12 are respectively provided with a fan wheel 20 and a partition 16 for dividing the inner space thereof into a first air channel 151 and a second air channel 152, the first body 11 and the second body 12 are respectively provided with a switch button 31 for controlling the operation of the fan wheel 20, a first air outlet 141 communicated with the first air duct 151, and a second air outlet 142 communicated with the second air duct 152, the switch key 31 is used for controlling the fan wheel 20 in the corresponding first body 11 and the second body 12 to be in a forward rotation mode or a reverse rotation mode respectively, when the fan wheel 20 is in the forward rotation mode, the airflow formed corresponding to the fan wheel 20 is blown out from the first air outlet 141 through the first air duct 151; when the fan wheel 20 is in the reverse rotation mode, the airflow generated by the fan wheel 20 is blown out from the second air outlet 142 through the second air duct 152.

In the above embodiment, the neck wear rack 10 of the neck hanging fan includes the first body 11 and the second body 12, the first body 11 and the second body 12 are respectively provided with the fan wheel 20 and the partition 16 partitioning the inner space thereof into the first air duct 151 and the second air duct 152, the first body 11 and the second body 12 are respectively provided with the switch key 31 controlling the operation of the fan wheel 20, the first air outlet 141 communicating with the first air duct 151 and the second air outlet 142 communicating with the second air duct 152, the fan wheel 20 in the first body 11 and the second body 12 is respectively controlled to be in the forward rotation mode or the reverse rotation mode by the switch key 31, and when the fan wheel 20 is in the forward rotation mode, the airflow formed corresponding to the fan wheel 20 is blown out from the first air outlet 141 through the first air duct 151; when the fan wheel 20 is in the reverse rotation mode, the airflow formed by the fan wheel 20 is blown out from the second air outlet 142 through the second air duct 152, so that the fan wheel 20 in the first body 11 and the second body 12 can respectively work in the forward rotation mode or the reverse rotation mode to adjust the first body 11 to discharge the air through the first air outlet 141 or the second air outlet 142 and adjust the second body 12 to discharge the air through the first air outlet 141 or the second air outlet 142, and a user can select the first body 11 and the second body 12 to respectively provide different air-discharging orientations, for example, select the first body 11 and the second body 12 to discharge the air through the first air outlet 141, select the first body 11 and the second body 12 to discharge the air through the second air outlet 142, select the first body 11 to discharge the air through the first air outlet 141 and select the second body 12 to discharge the air through the second air outlet 142, Or the first body 11 is selected to be blown out through the second air outlet 142 and the first body 11 is blown out through the first air outlet 141, so that various air-out modes are formed, and different use requirements of users in more use scenes can be met.

The whole neck hanging fan is approximately arc-shaped, and the neck wearing frame 10 can be formed by connecting two sections of the first body 11 and the second body 12, or formed by connecting more sections. Optionally, the neck wear rack 10 may further include a neck winding section 13, and the first body 11 and the second body 12 are respectively connected to opposite ends of the neck winding section 13. When the neck wearing frame 10 is worn on the neck of a user, the neck winding section 13 surrounds the position of the back neck, and the shape and the size of the neck winding section 13 are respectively approximately matched with the shape and the size of the neck of the user. When the neck is worn frame 10 and is worn on user's neck, first body 11 with second body 12 extends to the position that is located facial below from the end around neck section 13 respectively, can be so that hang the neck fan and wear more stably, and increase the air-out scope.

Optionally, the partition 16 extends along the length direction of the corresponding first body 11 and the second body 12, and the extending directions of the first air duct 151 and the second air duct 152 are the same as the extending direction of the partition 16. The neck wear rack 10 includes an inner side surface relatively close to the neck of the user in a wearing state and an outer side surface opposite to the inner side surface. The partition 16 is connected between the inner side and the outer side, and the arrangement direction of the first air duct 151 and the second air duct 152 in the corresponding first body 11 and the second body 12 is perpendicular to the plane of the partition 16. The first air duct 151 and the second air duct 152 extend in the same direction as the partition 16, respectively, and can guide the airflow generated by the fan wheel 20 into the air duct and then flow to different positions along the length extension direction of the neck wear rack 10.

Optionally, the first air outlet 141 includes a plurality of first air outlets arranged at intervals along the extending direction of the first air duct 151, and the second air outlet 142 includes a plurality of second air outlets arranged at intervals along the extending direction of the second air duct 152. When the hanging neck fan is used, airflow entering the first air duct 151 is blown out through the first air outlet 141, airflow entering the second air duct 152 is blown out through the second air outlet 142, the first air outlet 141 and the second air outlet 142 face different directions respectively, if the first air outlet 141 can face the head of a user, the second air outlet 142 can face the shoulder and neck of the user, the first air outlet 141 is composed of a plurality of first air outlet holes which are arranged at intervals along the extending direction of the first air duct 151, the second air outlet 142 is composed of a plurality of second air outlet holes which are arranged at intervals along the extending direction of the second air duct 152, and through the positions and intervals of the air outlet holes, the whole air outlet is more uniform, and a wider air outlet range is convenient to form.

Optionally, the fan wheel 20 is respectively disposed at the corresponding tail ends of the first body 11 and the second body 12, air inlets 17 are respectively disposed at positions on the side walls of the first body 11 and the second body 12 corresponding to the fan wheel 20, and each air inlet 17 includes air inlet holes arranged in a circular ring shape corresponding to the fan blade portion of the fan wheel 20. The first body 11 and the second body 12 may be respectively provided with the air inlet 17 only on the inner side wall, or provided with the air inlet 17 only on the outer side wall, or provided with the air inlet 17 on the inner side wall and the outer side wall at the same time. The air inlet 17 comprises air inlet holes which are arranged in a circular ring shape and correspond to the fan blade parts of the fan wheel 20, the air inlet holes are opposite to air flow channels between any adjacent fan blades in the fan blade parts, and air sucked from the air inlet holes enters the fan blades to form air flow in the working process of the fan wheel 20, so that the air inlet effect can be improved.

Optionally, a volute tongue portion 18 is disposed at one end of the partition 16 in the first body 11 and the second body 12, which is close to the fan wheel 20, the volute tongue portion 18 includes a flow guide surface 183 facing the fan wheel 20, and a first volute tongue surface 181 and a second volute tongue surface 182 respectively connected between two opposite ends of the flow guide surface 183 and the side surface of the partition 16, and included angles between the first volute tongue surface 181 and the flow guide surface 183 and included angles between the second volute tongue surface 182 and the flow guide surface 183 are acute angles, respectively. The included angles between the first volute tongue surface 181 and the second volute tongue surface 182 and the flow guide surface 183 are acute angles, so that the volute tongue portions 18 are respectively formed to be sharp near the portions where the fan 20 flows in. When the fan wheel 20 works, when the airflow formed by the rotation of the fan wheel 20 passes through the volute tongue portion 18 and one of the air duct inlets, the tip end of the corresponding side of the volute tongue portion 18 divides the airflow into two parts, according to the direction of the airflow passing through the volute tongue portion 18, most of the airflow flows to the air duct along the volute tongue surface on the side of the volute tongue portion 18 relatively close to the airflow inflow direction, and less of the airflow continues to flow along the rotation direction of the fan wheel 20 through the gap between the flow guide surface 183 and the fan wheel 20, and meanwhile, when the airflow passes through the other air duct inlet, less of the airflow flows into the air duct, and most of the airflow continues to flow along the rotation direction of the fan wheel 20 and enters the air duct again. In the present embodiment, and with reference to fig. 4, when the fan wheel 20 is in the reverse mode (i.e., rotating counterclockwise), the first volute tongue surface 181 is located on a side of the volute tongue 18 relatively close to the airflow inflow direction, and when the airflow generated by the rotation of the fan wheel 20 passes through the volute tongue 18 and the inlet of the first air duct 151, the volute tongue portion 18 is divided into two parts by the tip formed by the first volute tongue surface 181 and the flow guide surface 183, according to the direction of the air flow passing through the volute tongue portion 18, most of the air flow flows into the first air channel 151, and a small part of the air flow continues to flow along the rotation direction of the fan wheel 20 through the gap between the flow guide surface 183 and the fan wheel 20, meanwhile, when passing through the inlet of the second air duct 152, a small portion of the air flow will flow into the second air duct 152, and a large portion of the air flow will flow along the rotation direction of the fan wheel 20 for a circle and then enter the first air duct 151 again, and so on. When the fan wheel 20 is in the forward rotation mode (i.e., clockwise rotation), the second volute tongue surface 182 is located on one side of the volute tongue portion 18 relatively close to the airflow inflow direction, when the airflow formed by rotation of the fan wheel 20 passes through the volute tongue portion 18 and the inlet of the second air duct 152, the volute tongue portion 18 divides the airflow into two parts by the tip formed by the second volute tongue surface 182 and the flow guide surface 183, according to the direction in which the airflow passes through the volute tongue portion 18, most of the airflow flows into the second air duct 152, and a small part of the airflow continues to flow in the direction in which the fan wheel 20 rotates through the gap between the flow guide surface 183 and the fan wheel 20, and meanwhile, when the airflow passes through the inlet of the first air duct 151, a small part of the airflow flows into the first air duct 151, and a large part of the airflow reenters the second air duct 152 after continuing to flow for one circle in the direction in which the fan wheel 20 rotates, and so on. Therefore, when the fan 20 is in the reverse rotation mode, when the airflow generated by the fan 20 passes through the volute tongue portion 18, most of the airflow enters the first air duct 151 along the first volute tongue surface 181 and is blown out from the first air outlet 141; on the contrary, when the fan wheel 20 is in the forward rotation mode, when the airflow generated by the fan wheel 20 passes through the volute tongue portion 18, most of the airflow enters the second air duct 152 along the second volute tongue surface 182 and is blown out from the second air outlet 142.

The fan wheels 20 in the first body 11 and the second body 12 can be independently controlled, respectively, so that the first body 11 and the second body 12 can provide the required air outlet directions, respectively. For example, a user can control the fan 20 in the first body 11 to be in the forward rotation mode and the fan 20 in the second body 12 to be in the reverse rotation mode through the switch keys 31 on the first body 11 and the second body 12, so that the airflow generated by the fan 20 in the first body 11 is divided by the volute tongue portion 18 and mainly enters the first air duct 151 and then is discharged from the first air outlet 141, and the airflow generated by the fan 20 in the second body 12 is divided by the volute tongue portion 18 and mainly enters the second air duct 152 and then is discharged from the second air outlet 142. The fan wheel 20 in the first body 11 and the second body 12 is controlled to rotate forwards or reversely independently, so that the neck hanging fan can provide multiple air outlet modes, and different use requirements of users in more use scenes can be met.

Optionally, referring to fig. 4 and 5, the first volute tongue surface 181 and the second volute tongue surface are curved surfaces respectively. The first volute tongue surface 181 and the second volute tongue surface are respectively formed by sequentially connecting a plurality of curved surfaces with different radiuses, and the radiuses of the curved surfaces gradually increase from one end connected with the flow guide surface 183 to one end of the partition plate 16. The curved first and second volute tongue surfaces 181 and 182 can guide airflow better and reduce wind resistance and noise when flowing into the corresponding air duct. Optionally, the flow guiding surface 183 is an arc surface recessed in a direction away from the fan wheel 20. In an alternative embodiment, the curvature of the guiding surface 183 may be substantially identical to the curvature of the outer periphery of the outer wheel, the volute tongue 18 is disposed at the end of the partition 16 near the fan wheel 20, and the guiding surface 183 maintains a constant arc gap with the outer periphery of the fan wheel 20 along the width direction thereof.

Optionally, referring to fig. 6, control circuits are further respectively disposed IN the first body 11 and the second body 12, the control circuits include a controller 32 and a driving circuit 33 connected to the controller 32, the driving circuit 33 includes a first input terminal IN _ a and a second input terminal IN _ B for receiving an output signal of the controller 32, and a first output terminal OUT _ a and a second output terminal OUT _ B respectively connected to the positive pole and the negative pole of the fan wheel 20, and the controller 32 is connected to the switch key 31; the controller 32 outputs a high level signal to the first input terminal IN _ a and a low level signal to the second input terminal IN _ B respectively according to a key instruction of the switch key 31 for controlling the fan wheel 20 to operate IN the forward rotation mode, so that the first output terminal OUT _ a is a positive output terminal and the second output terminal OUT _ B is a negative output terminal; the controller 32 outputs a low level signal to the first input terminal IN _ a and a high level signal to the second input terminal IN _ B respectively according to a key instruction of the switch key 31 for controlling the fan wheel 20 to operate IN the reverse rotation mode, so that the first output terminal OUT _ a is a negative output terminal and the second output terminal OUT _ B is a positive output terminal. The user can select the fan wheel 20 in the first body 11 and the second body 12 to be in the forward rotation mode or the reverse rotation mode by operating the switch keys 31 on the first body 11 and the second body 12, respectively, the switch keys 31 are pressed to form a key instruction and are sent to the controller 32, and the controller 32 correspondingly controls the driving circuit 33 to change the positive pole and the negative pole of the power supply input of the fan wheel 20, so as to change the rotation direction of the fan wheel 20.

IN an alternative specific example, the driving circuit 33 may include a driving chip of type AM2837, where the first input terminal IN _ a of the driving chip inputs a high level, and the second input terminal IN _ B inputs a low level, the first output terminal OUT _ a is used as the positive pole of the fan wheel 20, and the second output terminal OUT _ B is used as the negative pole of the fan wheel 20, and at this time, the fan wheel 20 rotates forward; on the contrary, when the first input terminal IN _ a of the driving chip inputs a low level and the second input terminal IN _ B inputs a high level, the first output terminal OUT _ a is used as the negative pole of the fan wheel 20 and the second output terminal OUT _ B is used as the positive pole of the fan wheel 20, and at this time, the fan wheel 20 rotates reversely. The first input end IN _ A and the second input end IN _ B of the driving chip can be correspondingly connected with the control output end of the corresponding controller 32, and the controller 32 respectively outputs high level or low level as control signals to the first input end IN _ A and the second input end IN _ B of the driving chip according to the key command of the switch key 31 so as to adjust the rotating direction of the impeller 20.

The neck hanging fan provided by the above embodiment of the application at least has the following characteristics:

the first and the second hanging neck fans comprise two fan wheels 20 which can be respectively and independently controlled, the hanging neck fan is respectively provided with two air outlets facing different directions corresponding to each fan wheel 20, the two fan wheels 20 can respectively work in a forward rotation mode or a reverse rotation mode to respectively adjust the air outlet directions of the fan wheels 20 to form a plurality of air outlet modes, and therefore different use requirements of users in more use scenes can be met;

secondly, each fan wheel 20 is provided with a volute tongue portion 18, and the airflow generated by the fan wheel 20 is divided by the volute tongue portions 18, so that the airflow can mainly flow out from an air outlet in one direction when the fan wheel 20 is in a corresponding forward rotation mode or reverse rotation mode, and the effect of better changing the air outlet direction is realized;

thirdly, the air inlet 17 is composed of air inlet holes which are arranged in a circular ring shape and correspond to the fan blades of the fan wheel 20, and in the working process of the fan wheel 20, air sucked from the air inlet holes forms airflow before entering the fan blades, so that the air inlet effect can be improved.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A neck hanging fan comprises a neck wearing frame and a fan wheel accommodated in the neck wearing frame, and is characterized in that the neck wearing frame comprises a first body and a second body, the first body and the second body are internally provided with the fan wheel and a partition plate which divides the inner space of the fan wheel into a first air channel and a second air channel, the first body and the second body are respectively provided with a switch key for controlling the fan wheel to work, a first air outlet communicated with the first air channel and a second air outlet communicated with the second air channel, the switch key is respectively used for controlling the fan wheel in the corresponding first body and the second body to be in a forward rotation mode or a reverse rotation mode, and when the fan wheel is in the forward rotation mode, air flow formed corresponding to the fan wheel is blown out from the first air outlet through the first air channel; when the fan wheel is in the reverse rotation mode, the airflow formed by the fan wheel is blown out of the second air outlet through the second air duct.

2. The neck fan as claimed in claim 1, wherein the partition plates in the first and second bodies have a volute tongue portion at an end thereof adjacent to the impeller, the volute tongue portion includes a flow guide surface facing the impeller, and first and second volute tongue surfaces respectively connected between opposite ends of the flow guide surface and the side surfaces of the partition plates, and the first and second volute tongue surfaces and the flow guide surface respectively have acute angles.

3. The neck hanging fan as claimed in claim 2, wherein the first and second volute tongue surfaces are curved surfaces, respectively.

4. The neck hanging fan as claimed in claim 3, wherein the first and second volute tongue surfaces are formed by sequentially connecting a plurality of curved surfaces having different radii, and the radii of the plurality of curved surfaces gradually increase from the end connected to the flow guide surface to the end of the partition.

5. The neck fan of claim 2 wherein the deflector surface is a curved surface that is concave in a direction away from the impeller.

6. The hanging neck fan as claimed in claim 1, wherein the first body and the second body are respectively provided with a control circuit, the control circuit comprises a controller and a driving circuit connected with the controller, the driving circuit comprises a first input end and a second input end for receiving an output signal of the controller, and a first output end and a second output end respectively connected with the positive pole and the negative pole of the fan wheel, and the controller is connected with the switch key;

7. The neck hanging fan as claimed in claim 1, wherein the partition extends along the length direction of the corresponding first body and the second body, and the extending direction of the first air channel and the second air channel is the same as the extending direction of the partition.

8. The neck hanging fan as claimed in claim 7, wherein the first air outlet includes a plurality of first air outlets spaced along the extending direction of the first air duct, and the second air outlet includes a plurality of second air outlets spaced along the extending direction of the second air duct.

9. The hanging neck fan as claimed in claim 1, wherein the fan wheel is respectively disposed at the ends of the first body and the second body, the side walls of the first body and the second body are respectively provided with air inlets at positions corresponding to the fan wheel, and the air inlets include air inlet holes arranged in a circular ring shape corresponding to the fan blade portion of the fan wheel.

10. The neckhanging fan of any one of claims 1 to 9, wherein the neckhanging bracket further comprises a neck-winding section, the first body and the second body being connected to opposite ends of the neck-winding section, respectively.