CN117249098A

CN117249098A - Portable blowing device

Info

Publication number: CN117249098A
Application number: CN202211450863.XA
Authority: CN
Inventors: 谢京司; 陈祝松
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-02-14
Filing date: 2022-11-18
Publication date: 2023-12-19
Also published as: CN218991912U; CN218991913U; CN218376961U; CN218934771U; CN218376962U; CN218760512U; CN219062020U; CN218542648U; CN115434932A

Abstract

The application provides a portable blast apparatus, portable blast apparatus is used for hanging in user's head, neck, arm or waist and bloies, including having a suspension type main part that holds the chamber and setting up the fan assembly in holding the intracavity, be provided with air intake and the air outlet that the chamber was held in the intercommunication in the suspension type main part, the inner wall of suspension type main part encloses and closes and be formed with the wind passageway that gathers of intercommunication air intake and air outlet, the fan assembly includes mixed flow booster centrifugal fan, mixed flow booster centrifugal fan is including being used for driven motor, the motor is three-phase synchronous motor or three-phase asynchronous motor, in order to drive through three-phase synchronous motor or three-phase asynchronous motor mixed flow booster centrifugal fan rotates with predetermineeing the rotational speed and forms the strong negative pressure induced draft to the external air. The portable blast apparatus that this application provided can promote the amount of wind through mixed flow booster centrifugal fan and three-phase motor's organic combination, furthest.

Description

Portable blowing device

The application requires that the application number is filed in China patent office on the 14 th day of 2022 02

202220284700.8, priority to the chinese patent application entitled "portable blowing device", the entire contents of which are incorporated herein by reference.

Technical Field

The application belongs to the technical field of fans, and more particularly relates to a portable blowing device.

Background

The fan is a household appliance which drives the fan blades to rotate by using the motor to accelerate the circulation of air and realize the cooling, is mainly used for cooling and relieving summer heat and circulating air, and is widely used in places such as families, classrooms, offices, shops, hospitals, hotels and the like. When people are in a high-temperature environment or need to go out in a hot climate environment, the fan is urgently needed to circulate surrounding air, so that the aim of cooling is fulfilled; in order to solve the problems, a hand-held fan which is convenient for users to use is arranged on the market; however, when the hand-held fan is used, one hand of the user is required to be occupied, and when the user needs to do work with both hands, the hand-held fan cannot be used, so that the hand-held fan is inconvenient to carry and use, and the use requirement of the user cannot be met.

In addition, in the prior art, axial flow fan blades or direct flow centrifugal fan blades are adopted, but the air quantity or the air pressure of the fan blades is insufficient, so that the fan blades are easily interfered by environmental wind when in outdoor use, and the using effect is influenced; in the prior art, more than 3 motors and fans are used for blowing, but the fan has complicated structure and large volume, which affects the use intention of users, increases the load of the neck, and has the advantages of high cost of a multi-motor mode and high assembly cost; especially, on the premise of controlling the number of motors, the combination of one or two motors and the fan cannot actually meet the use requirement of the user on the fan, so that it is necessary in the field to provide a new portable blowing device so as to meet the use requirement of the user on the fan while controlling the number of motors.

Disclosure of Invention

An object of the present application is to provide a portable blowing device to solve the technical problem that the fan that exists among the prior art is inconvenient for the user to carry about and use, can't satisfy user's user demand.

In order to achieve the above purpose, the technical scheme adopted in the application is as follows: there is provided a portable air blowing device for hanging from a user's head, neck, arm or waist to blow air, the portable air blowing device comprising:

the air collecting device comprises a suspension type main body with a containing cavity, wherein an air inlet and an air outlet which are communicated with the containing cavity are formed in the suspension type main body, and an air collecting channel which is communicated with the air inlet and the air outlet is formed in the inner wall of the suspension type main body in a surrounding manner;

the fan assembly is arranged in the accommodating cavity, an air suction opening is formed in the position, corresponding to the air inlet, of the fan assembly, and is used for sucking external air from the air inlet into the accommodating cavity and discharging the external air from the air suction opening to the air outlet along the air collecting channel, wherein the fan assembly comprises a mixed flow booster centrifugal fan, the mixed flow booster centrifugal fan comprises a motor for driving, and the motor is a three-phase synchronous motor or a three-phase asynchronous motor, so that the mixed flow booster centrifugal fan is driven by the three-phase synchronous motor or the three-phase asynchronous motor to rotate at a preset rotating speed to form strong negative pressure air suction to the external air.

In one embodiment, the mixed flow booster centrifugal fan further comprises a wind guide cone, a plurality of diagonal flow blades which are distributed at equal intervals along the circumferential outer surface of the wind guide cone, and the motor is used for driving the wind guide cone, one side, far away from the air suction port, of the diagonal flow blades is provided with a flow guiding structure for guiding the air flow direction, so that a centrifugal wind area is formed on the periphery of the fan assembly, and the wind collecting channel is communicated with the centrifugal wind area.

In one embodiment, the fan assembly further comprises a converging shell sleeved on the periphery of the mixed flow booster centrifugal fan, and a converging channel used for communicating the centrifugal wind area and the wind gathering channel is arranged on the converging shell;

or, the fan assembly further comprises a converging shell sleeved on the periphery of the mixed flow booster centrifugal fan, and a converging channel used for communicating the centrifugal wind area and the air outlet is arranged on the converging shell.

In one embodiment, a pressurizing and shrinking channel is formed between the centrifugal wind area and the wind gathering channel, and the cross section area of the pressurizing and shrinking channel is gradually reduced from the centrifugal wind area to the wind gathering channel;

or, a compression limiting channel is formed between the centrifugal wind area and the wind gathering channel, the sectional area of the compression limiting channel is smaller than the sectional area of the wind outlet part of the centrifugal wind area, and the sectional area of the compression limiting channel is smaller than the sectional area of the wind inlet part of the wind gathering channel.

In one embodiment, an angle formed between the extending direction of the wind gathering channel towards the air outlet and the central axis of the wind guide cone is between 60 degrees and 120 degrees.

In one embodiment, the fan assembly further comprises an auxiliary fan sleeved on the periphery of the mixed flow booster centrifugal fan, and the air suction inlet comprises a main air inlet communicated with the mixed flow booster centrifugal fan and an auxiliary air inlet communicated with the auxiliary fan.

In one embodiment, the auxiliary fan is a direct-flow centrifugal fan or an oblique-flow centrifugal fan.

In one embodiment, the distance between the fan assembly and the inner wall of the suspension body is between 0.5 mm and 1.5 mm; and/or, a detachable ice feeling material sleeve for absorbing moisture and conducting heat is arranged on the suspension type main body and/or a supporting part of the suspension type main body, and the ice feeling material sleeve comprises cotton threads and ice feeling fiber threads; and/or, the motor is a single-phase brushless motor.

In one embodiment, the preset rotation speed of the three-phase synchronous motor or the three-phase asynchronous motor for driving the mixed-flow booster centrifugal fan is between 8000 rpm and 100000 rpm, or between 12000 rpm and 75000 rpm, or between 15000 rpm and 50000 rpm, or between 20000 rpm and 30000 rpm; the air inlet is provided with a metal mesh enclosure, so that foreign matters can be prevented from entering the high-rotation-speed three-phase synchronous motor or the high-rotation-speed three-phase asynchronous motor through the metal mesh enclosure, and the three-phase synchronous motor or the three-phase asynchronous motor can be prevented from being touched by extrusion deformation through the structural strength of the metal mesh enclosure.

In one embodiment, the fan assembly performs stepless regulation on the three-phase synchronous motor or the three-phase asynchronous motor in a stepless speed regulation mode, so that user-defined fine adjustment on the balance choice of air quantity and wind noise is realized.

In one embodiment, the portable blowing device further comprises a wind collecting cover arranged in the accommodating cavity, the wind collecting cover and the inner wall of the hanging type main body enclose to form a wind collecting cavity, the fan assembly is arranged in the wind collecting cavity, and a yielding port communicated with the wind collecting cavity and the air inlet is formed in the wind collecting cover.

In one embodiment, the distance between the fan assembly and the inner wall of the wind gathering cap is between 0.5 mm and 1.5 mm.

In one embodiment, the outer surface of the wind gathering cover is provided with a buffer for abutting against the inner wall of the suspension body.

In one embodiment, the portable blowing device further comprises a drainage structure fixedly connected with the wind collecting cover, and the drainage structure is enclosed with the inner wall of the suspension type main body to form the wind collecting channel communicated with the wind collecting cavity and the air outlet.

In one embodiment, the suspension body includes a flexible housing and a shaping member fixedly connected to an inner wall of the flexible housing.

In one embodiment, the number of the fan assemblies is two, and the two fan assemblies are respectively arranged at two ends of the suspension type main body.

In one embodiment, the number of the fan assemblies is one, the fan assemblies are arranged in the middle area of the suspension type main body, at least two air outlets are arranged on the suspension type main body, and the two air outlets are respectively positioned on two opposite sides of the fan assemblies.

In one embodiment, the number of the fan assemblies is three, two of the fan assemblies are respectively arranged at two ends of the suspension type main body, the other fan assembly is arranged in the middle area of the suspension type main body, at least two air outlets are arranged on the suspension type main body, and the two air outlets are respectively arranged at two opposite sides of the fan assemblies in the middle area of the suspension type main body.

The portable blast apparatus that this application provided's beneficial effect lies in: compared with the prior art, this application provides a portable blast apparatus, portable blast apparatus is used for hanging in user's head, neck, arm or waist and bloies, including having a suspension type main part that holds the chamber and setting up the fan assembly in holding the intracavity, be provided with air intake and the air outlet that the chamber was held in the intercommunication in the suspension type main part, the inner wall of suspension type main part encloses and closes and be formed with the wind passageway that gathers of intercommunication air intake and air outlet, the fan assembly includes mixed flow booster centrifugal fan, mixed flow booster centrifugal fan is including being used for driven motor, the motor is three-phase synchronous motor or three-phase asynchronous motor, in order to drive through three-phase synchronous motor or three-phase asynchronous motor mixed flow booster centrifugal fan rotates with predetermineeing the rotational speed and forms the strong negative pressure induced draft to external air. The portable blast apparatus that this application provided can promote the amount of wind through mixed flow booster centrifugal fan and three-phase motor's organic combination, furthest.

Particularly, the embodiment adopts a mode of organically combining the mixed flow booster centrifugal fan and the three-phase motor, so that the air quantity and the air pressure can be improved, and the interference of environmental wind is avoided; and only one or two mixed flow booster centrifugal fans are needed, so that the structure is simple to stack, the burden of the neck is reduced, and the cost and the assembly cost of the motor are reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a portable air blower according to a first embodiment of the present disclosure;

fig. 2 is a schematic perspective view of a portable air blower according to a first embodiment of the present disclosure;

fig. 3 is a schematic view of a part of a perspective structure of a portable air blower according to a first embodiment of the present disclosure;

fig. 4 is a schematic diagram showing a partial perspective view of a portable air blower according to a first embodiment of the present disclosure;

Fig. 5 is a schematic perspective view of a wind collecting cover and a drainage structure of a portable air blower according to an embodiment of the present disclosure;

fig. 6 is a schematic perspective view of a portion of a portable air blower according to an embodiment of the present disclosure;

fig. 7 is a schematic perspective view of a portable air blower according to an embodiment of the present disclosure;

fig. 8 is a schematic diagram showing a partial perspective view of a portable air blower according to an embodiment of the present disclosure;

fig. 9 is a schematic view showing a partial perspective structure of a portable air blower according to an embodiment of the present disclosure;

fig. 10 is a schematic partial perspective view of a portable air blower according to a second embodiment of the present disclosure;

fig. 11 is a schematic perspective view of a fan assembly of a portable blower according to a second embodiment of the present disclosure;

fig. 12 is a schematic cross-sectional structure of a fan assembly of a portable blower according to a second embodiment of the present disclosure.

Wherein, each reference sign in the figure:

1. a hanging type main body; 11. a receiving chamber; 12. an air inlet; 13. an air outlet; 14. a wind gathering channel; 15. a heat radiation hole; 2. a wind collecting cover; 21. a yielding port; 3. a drainage structure; 4. a support part; 5. a fan assembly; 51. mixed flow booster centrifugal fan; 511. an air guide cone; 512. diagonal flow vanes; 513. a flow guiding structure; 52. a centrifugal wind zone; 53. a pressurizing and narrowing passage; 54. an auxiliary fan; 55. a wind gathering cavity; 6. a semiconductor refrigeration module; 61. a refrigerating member; 62. a heat radiation fan.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Referring to fig. 1 to 4, in a first embodiment of the present application, a portable blower device may be used to hang on a user's head, neck, arm or waist for blowing, where the portable blower device includes a hanging body 1 having a receiving cavity 11 and a fan assembly 5 disposed in the receiving cavity 11, and the portable blower device may be hung on the user's neck by using the hanging body 1 without being held by a hand, so that the user's hands may be liberated; an air inlet 12 and an air outlet 13 which are communicated with the accommodating cavity 11 are arranged on the suspension type main body 1, an air collecting channel 14 which is communicated with the air inlet 12 and the air outlet 13 is formed on the inner wall of the suspension type main body 1 in a surrounding manner, an air suction opening is arranged at the position of the fan assembly 5 corresponding to the air inlet 12 and is used for sucking external air from the air inlet 12 into the accommodating cavity 11 and guiding the external air to the air outlet 13 along the air collecting channel 14 for discharging; when the fan assembly 5 works, air is sucked from the air inlet 12 and is discharged from the air outlet 13 after being pressurized, so that summer heat relieving and cooling can be carried out on a user, and meanwhile, hands of the user can be liberated, the user can conveniently carry the fan assembly with the user, the use requirement of the user can be met, and the user experience can be improved.

For example, the fan assembly 5 of the present embodiment may include a mixed-flow booster centrifugal fan, and the mixed-flow booster centrifugal fan may include a motor for driving, where the motor may be a single-phase motor, a three-phase synchronous motor, or a three-phase asynchronous motor, so that the mixed-flow booster centrifugal fan is driven by the three-phase synchronous motor or the three-phase asynchronous motor to rotate at a preset rotation speed to form a strong negative pressure suction for the outside air.

Preferably, in this embodiment, a three-phase synchronous motor or a three-phase asynchronous motor is adopted, and compared with a single-phase motor, in the case of using the three-phase motor to the neck, the head or the like, the three-phase motor (synchronous and asynchronous) of this embodiment can save various materials, thereby reducing the weight and avoiding the burden feeling to the neck or the like. Furthermore, the three-phase asynchronous motor of the embodiment can adopt a cage rotor, so that the asynchronous motor with the cage rotor has the advantages of simple structure, reliable operation, light weight and low production cost; of course, a wound three-phase asynchronous motor may be used, and three-phase windings of a rotor and a stator of the wound three-phase asynchronous motor may be correspondingly provided and connected with an external varistor through slip rings and brushes, so as to improve the starting performance of the motor and adjust the rotational speed of the motor by adjusting the resistance of the varistor.

In this embodiment, the preset rotation speed of the three-phase synchronous motor or the three-phase asynchronous motor for driving the mixed-flow booster centrifugal fan is between 8000 rpm and 100000 rpm, or between 12000 rpm and 75000 rpm, or between 15000 rpm and 50000 rpm, or between 20000 rpm and 30000 rpm.

In addition, in the use scene of hanging on the neck, because the three-phase motor is close to the hair and generally adopts the mode of super high rotation speed, for example, 15000 rpm or more, the negative pressure effect near the air inlet is very strong, therefore, in order to avoid sucking the hair into the air inlet 12, the air inlet can be provided with a metal mesh enclosure (mesh enclosure structure shown as the air inlet 12 in fig. 1 and 2, not labeled in addition) so as to prevent the foreign matters from entering the three-phase synchronous motor or the three-phase asynchronous motor with high rotation speed through the metal mesh enclosure, and avoid being touched to the three-phase synchronous motor or the three-phase asynchronous motor by extrusion deformation through the structural strength of the metal mesh enclosure. It should be noted that, the metal mesh enclosure may be made of metal and may be integrally formed with the suspension type main body 1, and in other embodiments, the metal mesh enclosure may be embedded in the suspension type main body 1, which is not limited herein.

Correspondingly, the fan assembly of the embodiment performs stepless regulation on the three-phase synchronous motor or the three-phase asynchronous motor in a stepless speed regulation mode, so that user-defined fine adjustment on the balanced choice of air quantity and wind noise is realized. Through this kind of mode, this application can further promote user experience to avoid jumping that multi-gear speed governing brought to become the rotational speed and bring the problem of harm for motor and bearing, promote life.

Referring to fig. 1 to 3, as a specific implementation manner of the portable blowing device according to an embodiment of the present application, a hanging type main body 1 of the portable blowing device includes a flexible housing and a shaping member fixedly connected to an inner wall of the flexible housing, a receiving cavity 11 is disposed in the flexible housing, and the shaping member is disposed in the receiving cavity 11 and fixedly connected to the inner wall of the flexible housing. The user can be according to the form of user demand or use scene self-interacting suspension main part 1, if the bending radian of accessible change suspension main part 1 is around establishing portable blast apparatus and is used on forehead, waist, arm or shank, perhaps through torsion suspension main part 1 in order to change the orientation of air intake 12 or air outlet 13, the user of being convenient for hand-carry uses, satisfies user's user demand. In addition, the comfort of the user can be improved by adopting the flexible shell, and the flexible shell is contacted with the shoulder and the neck of the user to play a certain role in buffering and damping. The material of the flexible casing of the suspension body 1 and the specific structure of the shaping member are not limited herein. Optionally, the flexible housing may be made of silica gel or TPU (Thermoplastic polyurethanes, thermoplastic polyurethane elastomer rubber), and the characteristics of high strength, good toughness, etc. are utilized. Optionally, the shaping piece may be an aluminum strip added in the gooseneck or the serpentine tube, and fixedly connects the whole to the inner wall of the flexible housing, so that the suspension type main body 1 can be kept in a shape required by a user, and the use requirement of the user is met.

Specifically, referring to fig. 1 to 2, in the first embodiment, the positions and the number of the air inlets 12 and the air outlets 13 on the hanging body 1 of the portable air blower are not limited. When the portable blowing device is hung at the neck of the user, the air inlet 12 on the hanging main body 1 may be provided at the inner surface of the hanging main body 1 facing the neck; or, the air inlet 12 on the suspension body 1 can be arranged on the outer surface of the suspension body 1, which is away from the neck; or, the air inlet 12 on the suspension body 1 may be disposed on the upper surface of the suspension body 1 facing upward; alternatively, the air inlet 12 of the suspended body 1 may be provided on the downward-facing lower surface of the suspended body 1. Preferably, the air inlet 12 on the suspension body 1 is provided on the inner surface of the suspension body 1 facing the neck; or, the air inlet 12 on the suspension body 1 is arranged on the outer surface of the suspension body 1, which is away from the neck. The number of the air inlets 12 is multiple, so that wind resistance is reduced, the fan assembly 5 is beneficial to guiding outside air into the accommodating cavity 11 from the air inlets 12, the air quantity in the accommodating cavity 11 is guaranteed, and further wind power output by the air outlets 13 is beneficial to guaranteeing. Preferably, the air inlet 12 on the suspension type main body 1 is arranged on the outer surface of the suspension type main body 1, which is away from the neck, and the plurality of air inlets 12 are uniformly distributed on the outer surface of the suspension type main body 1, so that the noise generated in the operation process of the fan assembly 5 received by a user can be reduced while the air quantity in the accommodating cavity 11 of the suspension type main body 1 is ensured to be input, and the user experience is improved. Optionally, the air outlet 13 on the suspension main body 1 may be disposed on the upper surface of the suspension main body 1 facing upward, so that the wind generated by the fan assembly 5 in the accommodating cavity 11 can be blown toward the neck and the head of the user, thereby implementing the cooling and the summer heat relieving for the user. Optionally, the quantity of air outlets 13 on the suspension type main part 1 is a plurality of, and a plurality of air outlets 13 equidistant are laid in the upper surface of the orientation of suspension type main part 1, can sweep the cooling to the user by multiple angles, satisfy the demand of user's quick cooling.

Optionally, the suspension main body 1 may include an inner shell and an outer shell that are fastened to each other, the inner shell is adjacent to the neck, and the outer shell is far away from the neck, and the air outlet 13 may be disposed on the outer shell of the suspension main body 1 to form blowing on the face, further, the air outlet 13 may be disposed in a strip shape along the main body direction of the suspension main body 1, and the overall curvature of the strip air outlet 13 is substantially the same as the curvature of the main body of the suspension main body 1, so as to facilitate processing, and because the way of the wind in the wind collecting channel 14 is substantially identical to the main body of the suspension main body 1, the strip air outlet 13 is more beneficial to blowing the wind in the wind collecting channel 14, avoiding the wind from turning in the wind collecting channel 14 and forming turbulence, thereby improving the blowing effect and reducing noise.

Optionally, all be provided with dustproof separation blade on air intake 12 and the air outlet 13 of suspension type main part 1, when portable blast apparatus was in idle state, usable dustproof separation blade lid was established on air intake 12 and air outlet 13 of suspension type main part 1, prevented that external dust impurity from air intake 12 and air outlet 13 from getting into and holding in the chamber 11, effectively prevented when portable blast apparatus was restarted, the air that blows out from holding in the chamber 11 was mingled with impurity, was favorable to promoting user experience.

Referring further to fig. 1 to 2, in the first embodiment, the number of fan assemblies 5 of the suspension body 1 disposed in the accommodating chamber 11 is not limited. Optionally, the number of the fan assemblies 5 is two, the two fan assemblies 5 are respectively arranged at two ends of the suspension type main body 1, and after the fan assemblies 5 at two ends suck air from the outside, the air is conveyed to the air outlet 13 along the air gathering channels 14 at two sides of the suspension type main body 1 to be discharged, so that the user can be cooled by relieving summer heat.

Optionally, as another specific implementation manner of the portable blowing device provided in the first embodiment of the present application, the number of the fan assemblies 5 is one, the fan assemblies 5 are disposed in a middle area of the suspension type main body 1 in the length direction, at least two air outlets 13 are disposed on the suspension type main body 1, and the two air outlets 13 are respectively disposed on two opposite sides of the fan assemblies 5, so that air in the accommodating cavity 11 can be sucked into the fan assemblies 5 and discharged along the air outlets 13 on two sides of the suspension type main body 1, and users are purged from multiple angles, thereby meeting the requirement of rapid cooling of the users.

Optionally, as another specific implementation manner of the portable air blowing device provided in the first embodiment of the present application, the number of the fan assemblies 5 is three, where two fan assemblies 5 are respectively disposed at two ends of the suspension type main body 1, another fan assembly 5 is disposed in a middle area of the suspension type main body 1, at least two air outlets 13 are disposed on the suspension type main body 1, and two air outlets 13 are respectively disposed at two opposite sides of the fan assembly 5 in the middle area of the suspension type main body 1, so that air in the air accommodating cavity 11 sucked by the fan assemblies 5 can be discharged along the air outlets 13 at two sides of the suspension type main body 1, and when the user is purged from multiple angles, the suction amount of the portable air blowing device to the external air is effectively increased, thereby increasing the wind power output by the air outlets 13, meeting the requirement of quick cooling of the user, and improving the user experience.

Referring to fig. 3 and 8, in the first embodiment, the fan assembly 5 includes a mixed-flow booster centrifugal fan 51, and features of high efficiency, low noise, compact structure, easy installation, etc. of the mixed-flow booster centrifugal fan 51 are utilized. The mixed flow booster centrifugal fan 51 comprises a wind guide cone 511, a plurality of diagonal flow blades 512 which are distributed at equal intervals along the circumferential outer surface of the wind guide cone 511, and a motor for driving the wind guide cone 511, wherein the wind guide cone 511 is driven to rotate by the motor, and the plurality of diagonal flow blades 512 arranged on the wind guide cone 511 are driven to rotate relative to the motor by taking the wind guide cone 511 as a rotation center, so that external air is led into the accommodating cavity 11 from the air inlet 12; meanwhile, a diversion structure 513 for guiding the air flowing direction is arranged on one side of the diagonal flow blade 512 far away from the air suction port, so that a centrifugal air area 52 is formed on the periphery of the fan assembly 5, the air collecting channel 14 is communicated with the centrifugal air area 52, the air flowing direction is guided by the diversion structure 513 arranged on the diagonal flow blade 512, so that the air sucked into the accommodating cavity 11 from the outside blows to the accommodating cavity 11 along the extending direction of the diversion structure 513, the periphery of the fan assembly 5 forms the centrifugal air area 52 in the accommodating cavity 11, namely, the air flowing direction sucked into the accommodating cavity 11 from the air inlet 12 can be generally regarded as being parallel to the rotating shaft of the motor, and under the diversion effect of the diversion structure 513, the included angle between the air flowing direction blown into the centrifugal air area 52 and the air flowing direction sucked into the air inlet 12 is between 60 degrees and 120 degrees, namely, the included angle between the air flowing direction blown into the centrifugal air area 52 and the air flowing direction sucked into the air inlet 12 is more than or equal to 60 degrees and less than or equal to 120 degrees; in other words, the included angle formed between the extending direction of the wind collecting channel 14 facing the air outlet 13 and the central axis of the wind guiding cone 511 is between 60 degrees and 120 degrees, that is, the included angle formed between the extending direction of the wind collecting channel 14 facing the air outlet 13 and the central axis of the wind guiding cone 511 is greater than or equal to 60 degrees and less than or equal to 120 degrees, so that the air flow can be pressurized in the flow guiding process, the wind power output by the air outlet 13 is increased, and the requirement of rapid cooling of a user is met. Preferably, an included angle formed between the extending direction of the wind collecting channel 14 facing the air outlet 13 and the central axis of the wind guiding cone 511 is between 80 degrees and 100 degrees, that is, an included angle formed between the extending direction of the wind collecting channel 14 facing the air outlet 13 and the central axis of the wind guiding cone 511 is greater than or equal to 80 degrees and less than or equal to 100 degrees, specifically, the included angle can be 80 degrees, 81 degrees, 82 degrees, 83 degrees, 84 degrees, 85 degrees, 86 degrees, 87 degrees, 88 degrees, 89 degrees, 90 degrees, 91 degrees, 92 degrees, 93 degrees, 94 degrees or 95 degrees, so that the mixed flow supercharging centrifugal fan 51 can pressurize air flow in the process of sucking external air and guiding the air, the air in the centrifugal air area 52 is conveyed to the air outlet 13 by the wind collecting channel 14, the wind power output by the air outlet 13 is increased, the user is blown and cooled, the requirement of quick cooling of the user is met, and the user experience is improved.

Optionally, the distance between the fan assembly 5 and the inner wall of the suspension type main body 1 is between 0.5 mm and 1.5 mm, that is, the distance between the fan assembly 5 and the inner wall of the suspension type main body 1 is greater than or equal to 0.5 mm and less than or equal to 1.5 mm, so as to form a pressurizing channel, and prevent the mixed flow booster centrifugal fan 51 from idling due to the overlarge distance between the fan assembly 5 and the inner wall of the suspension type main body 1, and the input airflow is disordered and the diversion and pressurization effect cannot be realized; preferably, the distance between the fan assembly 5 and the inner wall of the suspension type main body 1 is 0.5 mm, so that the fan assembly 5 can conduct flow and pressure to air flow, meanwhile, the phenomenon that the fan assembly 5 and the suspension type main body 1 are damaged due to the fact that the vibration generated in the operation process of the fan assembly 5 is caused to be in contact with and scratch with the inner wall of the suspension type main body 1 due to the fact that the distance between the fan assembly 5 and the inner wall of the suspension type main body 1 is too small can be prevented, the service life of the portable blowing device is prolonged, and noise generated in the operation process is reduced. In other words, the present embodiment can integrate and realize the function of the wind collecting cover through the inner wall of the suspension type main body 1, and can reduce the excessive disassembling structure and the installation cost.

Optionally, the fan assembly 5 further comprises a converging shell sleeved on the periphery of the mixed flow booster centrifugal fan 51, a converging channel used for communicating the centrifugal air area 52 and the air gathering channel 14 is arranged on the converging shell, when the fan assembly 5 works, air is sucked from the outside, pressurized by the mixed flow booster centrifugal fan 51 and guided to the centrifugal air area 52, then air flow in the centrifugal air area 52 is converged and guided to the air gathering channel 14 by the converging channel of the converging shell, the air gathering channel 14 is communicated with the air outlet 13, so that air flow output by the fan assembly 5 is converged and accelerated through the converging channel and the air gathering channel 14 and then is discharged through the air outlet 13, the air outlet speed is improved, and accordingly the wind power output by the air outlet 13 is effectively improved, and the requirement of rapid cooling of a user is met.

Optionally, as another specific implementation manner of the portable air blowing device provided in the first embodiment of the present application, the fan assembly 5 further includes a converging shell sleeved on the outer periphery of the mixed-flow booster centrifugal fan 51, and a converging channel used for communicating the centrifugal air area 52 and the air outlet 13 is provided on the converging shell, when the fan assembly 5 works, air is sucked from the outside, pressurized by the mixed-flow booster centrifugal fan 51 and guided to the centrifugal air area 52, and then the converging channel of the converging shell converges and guides the air flow in the centrifugal air area 52 to the air outlet 13, so that the air flow output by the fan assembly 5 is discharged through the air outlet 13 after being converged and accelerated by the converging channel, so as to promote the air outlet speed, thereby effectively promoting the wind power output by the air outlet 13, and meeting the requirement of rapid cooling of a user.

Alternatively, as another specific implementation manner of the portable air blowing device provided in the first embodiment of the present application, the mixed-flow booster centrifugal fan 51 may be a coaxial double-sided mixed-flow fan, and the air inlets 12 are formed on two opposite sides of the suspension type main body 1, and the external air is led into the accommodating cavity 11 from the air inlets 12 on two sides of the suspension type main body 1 through the mixed-flow booster centrifugal fan 51, so that the input amount of the external air is increased, the wind force is increased, and the wind force output by the air outlet 13 is increased.

Referring to fig. 4 to 6, in the first embodiment, the portable blower device further includes a wind collecting cover 2 disposed in the accommodating cavity 11, the wind collecting cover 2 and the inner wall of the suspension main body 1 enclose to form a wind collecting cavity 55, the fan assembly 5 is mounted in the wind collecting cavity 55, and a yielding port 21 communicating the wind collecting cavity 55 with the air inlet 12 is formed in the wind collecting cover 2, so that when the fan assembly 5 works, air enters the yielding port 21 through the air inlet 12 and then enters the fan assembly 5; the fan assembly 5 is started, external air is led into the air inlet from the air inlet 12 by utilizing the yielding port 21 on the wind gathering cover 2, pressurized by the fan assembly 5 and discharged to the wind gathering cavity 55, wind generated by the fan assembly 5 is gathered in the wind gathering cavity 55, pressurized again, accelerated by the wind gathering channel 14 and discharged through the air outlet 13, so that the wind power output by the air outlet 13 is effectively promoted, and the requirement of rapid cooling of a user is met. In other words, in order to ensure the integrity of the outer surface of the hanging main body 1, the present embodiment adds a special wind collecting cover 2 between the inner wall of the hanging main body 1 and the fan assembly 5, and improves the product competitiveness of the portable product by increasing a certain cost while ensuring the product performance.

It should be noted that there is no substantial structural or spatial division between the wind collecting channel 14 and the wind collecting cavity 55 in this embodiment, for example, in some embodiments, the wind collecting channel 14 and the wind collecting cavity 55 may be identical, that is, the wind collecting channel 14 is the wind collecting cavity 55, or in other embodiments, the wind collecting cavity 55 may be a part of the wind collecting channel 14.

Optionally, the distance between the fan assembly 5 and the inner wall of the wind-collecting cover 2 is between 0.5 mm and 1.5 mm, that is, the distance between the fan assembly 5 and the inner wall of the wind-collecting cover 2 is greater than or equal to 0.5 mm and less than or equal to 1.5 mm, so as to form a pressurizing channel, and prevent the mixed flow booster centrifugal fan 51 from idling due to the overlarge distance between the fan assembly 5 and the inner wall of the wind-collecting cover 2, so that the input airflow is disordered and the diversion and pressurization effect cannot be realized. Preferably, the distance between the fan assembly 5 and the inner wall of the wind gathering cover 2 is 0.5 mm, so that the fan assembly 5 can conduct flow guiding and pressurizing, meanwhile, the phenomenon that the fan assembly 5 and the wind gathering cover 2 are damaged due to the fact that the vibration generated in the operation process of the fan assembly 5 is caused to be in contact with and scratch with the inner wall of the wind gathering cover 2 due to the fact that the distance between the fan assembly 5 and the inner wall of the wind gathering cover 2 is too small can be prevented, the service life of the portable blowing device is prolonged, and noise generated in the operation process is reduced.

Optionally, the outer surface of the wind collecting cover 2 is provided with a buffer member for abutting against the inner wall of the suspension type main body 1, for buffering vibration generated during operation of the fan assembly 5, and at the same time, noise generated when the wind collecting cover 2 and the inner wall of the suspension type main body 1 abut against and collide can be reduced. Optionally, the buffer member is shockproof foam or silica gel fixedly connected to the outer surface of the wind gathering cover 2.

Referring to fig. 4 and 5, in the first embodiment, the portable air blower further includes a drainage structure 3 fixedly connected to the air collecting cover 2, and the drainage structure 3 encloses with the inner wall of the suspension body 1 to form an air collecting channel 14 communicating the air collecting cavity 55 and the air outlet 13, so that the air flow output by the fan assembly 5 is accelerated and pressurized through the air collecting channel 14 and then is discharged through the air outlet 13, so as to raise the air outlet speed. The air flow direction is guided by the guide structure 513 arranged on the diagonal flow blades 512 of the mixed flow booster centrifugal fan 51, so that the air flow sucked into the air collecting cavity 55 from the outside is blown to the air collecting cavity 55 along the extending direction of the guide structure 513, the periphery of the fan assembly 5 forms a centrifugal air area 52 in the air collecting cavity 55, namely, the air flow direction sucked into the air collecting cavity 55 from the air inlet 12 can be generally regarded as being parallel to the rotating shaft of the motor, and under the guide effect of the guide structure 513, the included angle between the air flow direction blown into the centrifugal air area 52 and the air flow direction sucked into the air inlet 12 is between 60 and 120 degrees, namely, the included angle between the air flow direction blown into the centrifugal air area 52 and the air flow direction sucked into the air inlet 12 is more than or equal to 60 degrees and less than or equal to 120 degrees; in other words, the included angle formed between the extending direction of the wind collecting cavity 55 facing the air outlet 13 and the central axis of the wind guiding cone 511 is between 60 degrees and 120 degrees, that is, the included angle formed between the extending direction of the wind collecting cavity 55 facing the air outlet 13 and the central axis of the wind guiding cone 511 is greater than or equal to 60 degrees and less than or equal to 120 degrees, so that the air flow can be pressurized in the flow guiding process, the wind power output by the air outlet 13 is increased, and the requirement of rapid cooling of a user is met.

Referring to fig. 4 and 11 together, in the first embodiment, a compression limiting channel 53 is formed between the centrifugal air area 52 and the air collecting channel 14, the cross-sectional area of the compression limiting channel 53 is gradually reduced from the centrifugal air area 52 to the air collecting channel 14, so that the air flow in the centrifugal air area 52 is smoothly guided to the air collecting channel 14, and when the air flow flows through the compression limiting channel 53 due to the gradually reduced cross-sectional area of the compression limiting channel 53, the pressure is increased and the air speed is increased, so that the air enters the centrifugal air area 52 for compression after being compressed by the fan assembly 5, is compressed and accelerated by the compression limiting channel 53, and the air flowing into the air collecting channel 14 can be prevented from reversely flowing into the centrifugal air area 52 while the wind power is increased, so that the portable air blowing device can continuously output high-pressure air for relieving summer heat and reducing the temperature, and meeting the use requirements of users.

Optionally, as another specific implementation manner of the portable air blower provided in the first embodiment of the present application, a compression limiting channel 53 is formed between the centrifugal air area 52 and the air collecting channel 14, the cross-sectional area of the compression limiting channel 53 is smaller than the cross-sectional area of the air outlet portion of the centrifugal air area 52, and the cross-sectional area of the compression limiting channel 53 is smaller than the cross-sectional area of the air inlet portion of the air collecting channel 14, so that the air flow in the centrifugal air area 52 is smoothly guided to the air collecting channel 14, and because the cross-sectional area of the compression limiting channel 53 is smaller than the cross-sectional area of the air outlet portion of the centrifugal air area 52, and is smaller than the cross-sectional area of the air inlet portion of the air collecting channel 14, when the air flows through the compression limiting channel 53, the pressure is increased, the air speed is increased, so that the air enters the centrifugal air area 52 after being compressed by the fan assembly 5, is compressed by the compression limiting channel 53, and the air flowing into the air collecting channel 14 can be prevented from reversing into the centrifugal air area 52 while the wind is increased, and the portable air blower can continuously output high-pressure air, so as to cool down for a user.

Referring to fig. 7 to 9, in the first embodiment, the support portion 4 is protruding from the inner surface of the middle area of the suspension body 1, and when in use, the suspension body 1 is hung on the neck of the user, and the support portion 4 can space the inner surface of the suspension body 1 from the neck of the user, so as to reduce the fitting area between the suspension body 1 and the neck. In addition, the inner surface of the middle part area of the suspension type main body 1 is provided with an air outlet 13, and the support part 4 enables the inner surface of the suspension type main body 1 to be spaced from the neck of the user, so that the air outlet 13 of the inner surface of the suspension type main body 1 is prevented from being blocked by the neck of the user, and the neck of the user is better subjected to heat dissipation and temperature reduction.

Optionally, the portable blowing device further comprises an EMS (Electrical muscle stimulation, muscle electro-stimulation technology) current pulse module for generating micro-currents to act on the neck, stimulating and massaging the neck muscles by sending mild and gentle electric waves through the epidermis layer to the dermis layer of the neck, stimulating the brain, hypothalamus, edge network structure with low-intensity specific waveform currents, regulating brain excitability, treating insomnia, anxiety or relieving symptoms, and being beneficial to improving user experience. Optionally, the EMS current pulse module is disposed in the suspension main body 1 and located in the support portion 4, so that assembly is facilitated, and integration level is improved.

Referring to fig. 7 to 9, in the first embodiment, the portable air blowing device further includes a semiconductor refrigeration module 6, and when the direct current provided by the power supply passes through a couple formed by connecting two different semiconductor materials in series, the two ends of the couple can absorb heat and release heat respectively, so that the purpose of refrigeration can be achieved, and the portable air blowing device has a simple structure and high reliability. The user can control semiconductor refrigeration module 6 according to self user demand, and when the wind that fan assembly 5 produced flowed through semiconductor refrigeration module 6, semiconductor refrigeration module 6 was cooled down the wind, effectively increased portable blast apparatus's air-out temperature range, promoted user experience.

Optionally, the semiconductor refrigeration module 6 includes the refrigeration piece 61 and is used for getting rid of the radiator fan 62 of the heat that the refrigeration piece 61 produced, the radiator hole 15 has been seted up to the position that the suspension type main part 1 corresponds to radiator fan 62, realize refrigerating through the refrigeration piece 61 that sets up in suspension type main part 1, and in time discharge the suspension type main part 1 outside through radiator hole 15 on the suspension type main part 1 with the heat that the refrigeration piece 61 produced by radiator fan 62, prevent that the heat that the refrigeration piece 61 produced from gathering in holding chamber 11, be mingled with the air that flows through holding chamber 11, discharge outside the suspension type main part 1 through air outlet 13, cause the gas temperature of air outlet 13 output higher, can't satisfy the demand of user's rapid cooling, avoid in the suspension type main part 1 local high temperature to lead to accelerating internal component ageing simultaneously, be favorable to prolonging portable blast apparatus's life.

Optionally, as another specific implementation manner of the portable air blowing device provided in the first embodiment of the present application, the fan assembly 5 is provided with a heat dissipation branch air channel for removing heat generated by the refrigerating element 61 of the semiconductor refrigerating module 6, the position of the hanging type main body 1 corresponding to the semiconductor refrigerating module 6 is provided with the heat dissipation hole 15, refrigeration is realized by the refrigerating element 61 arranged in the hanging type main body 1, and the heat generated by the refrigerating element 61 is timely discharged out of the hanging type main body 1 through the heat dissipation hole 15 on the hanging type main body 1 by the heat dissipation branch air channel of the fan assembly 5, so that the heat generated by the refrigerating element 61 is prevented from being accumulated in the accommodating cavity 11, the air mixed in the accommodating cavity 11 is discharged out of the hanging type main body 1 through the air outlet 13, the air temperature output by the air outlet 13 is high, the requirement of rapid cooling by a user cannot be met, and meanwhile, the aging of the internal components due to the fact that the local temperature in the hanging type main body 1 is too high is avoided, and the service life of the portable air blowing device is prolonged.

Referring to fig. 4 and fig. 6 together, in the first embodiment, the portable blower device further includes a power source for providing the fan assembly 5, the EMS current pulse module and the semiconductor refrigeration module 6 with the electric energy required for operation. The power supply can be arranged in the accommodating cavity 11 of the suspension type main body 1, or can be used by direct plug-in power supply through an external power supply, so that the volume and the weight of the portable blowing device can be effectively reduced, the portable blowing device is convenient for a user to carry about and use, and the use requirement of the user is met.

Optionally, the power is the battery of setting in suspension type main part 1, be provided with splint on the inner wall of suspension type main part 1, form the spacing groove between splint and the inner wall of suspension type main part 1, install the power in the spacing groove, with fixed power, on the one hand, can prevent that the user from rocking in holding chamber 11 because the power produces vibrations in the use, avoid the power to collide with the inner wall of suspension type main part 1 and produce the noise, or cause the damage to the power, be favorable to prolonging portable blast apparatus's life, on the other hand be convenient for the operating personnel can accurately install the power to holding the preset position in the chamber 11 in the equipment process, be favorable to improving packaging efficiency, make portable blast apparatus's structure compacter, promote portable blast apparatus's structural stability and reliability.

Optionally, the portable blowing device further comprises a charging interface which is arranged on the outer surface of the suspension type main body 1 and is electrically connected with the power supply, the user can charge the storage battery in the suspension type main body 1 through the charging interface, and the power supply is ensured to store enough electric energy for the portable blowing device to work, so that the use requirement of the user is met.

Optionally, the portable blowing device further comprises a control panel electrically connected with the power supply and a function key electrically connected with the control panel, the function key is installed on the hanging type main body 1, the control panel is installed in the hanging type main body 1, the user can operate the function key arranged on the hanging type main body 1 to start and stop the portable blowing device or select a mode, the use requirement of the user is met, and the operation is convenient.

Referring to fig. 10 to 12, as a specific implementation manner of the portable blower provided in the second embodiment of the present application, the fan assembly 5 further includes an auxiliary fan 54 sleeved on the outer periphery of the mixed-flow booster centrifugal fan 51, the air guide cone 511 is driven to rotate by the motor of the mixed-flow booster centrifugal fan 51, and the plurality of diagonal blades 512 disposed on the air guide cone 511 are driven to rotate relative to the motor with the air guide cone 511 as a rotation center, so as to drive the auxiliary fan 54 sleeved on the outer periphery of the mixed-flow booster centrifugal fan 51 to rotate, the air suction port includes a main air port communicated with the mixed-flow booster centrifugal fan 51 and an auxiliary air port communicated with the auxiliary fan 54, under the combined action of the mixed-flow booster centrifugal fan 51 and the auxiliary fan 54, the input amount of external air from the air inlet 12 into the accommodating cavity 11 is effectively increased, meanwhile, the flow direction of the air is restricted by the air collecting channel 14 is increased to form high-pressure air, and the air flow led by the mixed-flow booster centrifugal fan 51 and the auxiliary fan 54 is conveyed to the air outlet 13 by the air collecting channel 14 to cool the user. Alternatively, the auxiliary fan 54 may be a direct flow centrifugal fan or a diagonal flow centrifugal fan.

In some embodiments, a detachable ice feeling material set (not shown) for absorbing moisture and conducting heat can be sleeved on the suspension type main body 1 and/or the supporting part 4, and the ice feeling material set can specifically comprise cotton threads and ice feeling fiber threads and can be formed by intersecting and interweaving the cotton threads and the ice feeling fiber threads. According to the embodiment, through the detachable ice feeling material suite, uncomfortable feeling that heat cannot be dissipated and sweat is sticky and breathed when the portable blowing device is worn can be relieved, and cool and comfortable feeling when the portable blowing device is used outdoors is ensured.

Of course, in other embodiments, the motor described herein may also employ a high-speed single-phase brushless motor to replace a high-cost three-phase motor with a low-cost single-phase motor, thereby improving the market competitiveness of the product.

In some embodiments, a battery mounting cavity (not shown) of a pluggable standby battery can be embedded in the suspension type main body 1 and/or the supporting portion 4, so that the battery can be used in a switching manner at any time.

In some embodiments, a solar panel may be further embedded on the outer casing of the suspension body 1 for self-generating use outdoors.

The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention, but any modifications, equivalents, improvements, etc. within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable blowing device for hanging from a user's head, neck, arm or waist for blowing, the portable blowing device comprising:

2. A portable air blowing device as claimed in claim 1, wherein: the mixed flow booster centrifugal fan further comprises a wind guide cone and a plurality of diagonal flow blades which are distributed on the circumferential outer surface of the wind guide cone at equal intervals, the motor is used for driving the wind guide cone, one side, away from the air suction port, of the diagonal flow blades is provided with a flow guide structure for guiding the air flow direction, so that a centrifugal wind area is formed on the periphery of the fan assembly, and the wind collecting channel is communicated with the centrifugal wind area.

3. A portable air blowing device as claimed in claim 2, wherein: the fan assembly further comprises a converging shell sleeved on the periphery of the mixed flow booster centrifugal fan, and a converging channel used for communicating the centrifugal wind area and the wind gathering channel is arranged on the converging shell;

4. A portable air blowing device as claimed in claim 2, wherein: a pressurizing shrinkage passage is formed between the centrifugal wind area and the wind gathering passage, and the sectional area of the pressurizing shrinkage passage is gradually reduced from the centrifugal wind area to the wind gathering passage;

5. A portable air blowing device as claimed in claim 1, wherein: the distance between the fan assembly and the inner wall of the suspension body is between 0.5 mm and 1.5 mm; and/or, a detachable ice feeling material sleeve for absorbing moisture and conducting heat is arranged on the suspension type main body and/or a supporting part of the suspension type main body, and the ice feeling material sleeve comprises cotton threads and ice feeling fiber threads; and/or, the motor is a single-phase brushless motor.

6. A portable air blowing device according to any of claims 1-5, wherein: the preset rotating speed of the three-phase synchronous motor or the three-phase asynchronous motor for driving the mixed flow booster centrifugal fan is 8000-100000 revolutions per minute, 12000-75000 revolutions per minute, 15000-50000 revolutions per minute, 20000-30000 revolutions per minute; the air inlet is provided with a metal mesh enclosure, so that foreign matters can be prevented from entering the high-rotation-speed three-phase synchronous motor or the high-rotation-speed three-phase asynchronous motor through the metal mesh enclosure, and the three-phase synchronous motor or the three-phase asynchronous motor can be prevented from being touched by extrusion deformation through the structural strength of the metal mesh enclosure.

7. The portable air blowing apparatus of claim 6, wherein: the fan assembly performs stepless regulation on the three-phase synchronous motor or the three-phase asynchronous motor in a stepless speed regulation mode so as to achieve user-defined fine adjustment on balanced choice of air quantity and wind noise.

8. A portable air blowing device according to any of claims 1 to 5, wherein: the portable blowing device further comprises a wind collecting cover arranged in the accommodating cavity, the wind collecting cover and the inner wall of the hanging type main body enclose to form a wind collecting cavity, the fan assembly is arranged in the wind collecting cavity, and the wind collecting cover is provided with a yielding port communicated with the wind collecting cavity and the air inlet.

9. The portable air blowing device of claim 8, wherein: the distance between the fan assembly and the inner wall of the wind gathering cover is between 0.5 mm and 1.5 mm.

10. A portable air blowing device according to any of claims 1 to 5, wherein:

the number of the fan assemblies is two, and the two fan assemblies are respectively arranged at two ends of the suspension type main body;

or the number of the fan assemblies is one, the fan assemblies are arranged in the middle area of the suspension type main body, at least two air outlets are arranged on the suspension type main body, and the two air outlets are respectively positioned on two opposite sides of the fan assemblies;

or, the number of the fan assemblies is three, wherein two fan assemblies are respectively arranged at two ends of the suspension type main body, the other fan assembly is arranged in the middle area of the suspension type main body, at least two air outlets are arranged on the suspension type main body, and the two air outlets are respectively arranged at two opposite sides of the fan assemblies in the middle area of the suspension type main body.