CN112628209A

CN112628209A - Fan with cooling device

Info

Publication number: CN112628209A
Application number: CN202011645440.4A
Authority: CN
Inventors: 麦焕; 张晓泉; 陈宇强; 陈中兆; 刘阳清
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-04-09
Also published as: WO2022142376A1

Abstract

The invention relates to the technical field of household appliances, in particular to a fan. A fan includes: the air-out framework, the air-out framework has: the first air outlet is arranged in the extending direction of the air outlet frame body; the second air outlet is arranged on the circumferential surface of the air outlet frame body; the guide vanes are arranged in the air outlet frame and arranged between the first air outlet and the second air outlet, and driven by external force, the guide vanes have a first state of closing the first air outlet and guiding fluid to the second air outlet and a second state of opening the first air outlet. According to the fan, the first air outlet and the second air outlet are arranged on the air outlet frame body, the opening and closing of the first air outlet are controlled through the flow deflector structure, when the first air outlet is opened, the fan forms air outlet at an angle in the direction of the first air outlet, when the first air outlet is closed, airflow flows out of the second air outlet under the action of the flow deflector, and the second air outlet is formed on the peripheral surface of the air outlet frame body and can meet the air outlet of the fan within the range of 360 degrees in the circumferential direction, so that the air outlet angle of the fan is increased, and the air blowing requirements of users in different directions are met.

Description

Fan with cooling device

Technical Field

The invention relates to the technical field of household appliances, in particular to a fan.

Background

The main structure of the air circulation fan comprises a driving motor, a turbine fan, a flow guide grid and a cylindrical shell. The air circulation fan can blow out the wind spirally along a certain direction, and the wind can form spiral columnar wind after being stirred by the fan blades. The air circulation fan blows air far away and has good directionality.

The existing circulating fan is only provided with an air outlet in one direction, the air outlet direction is single, and the requirement of a user cannot be met.

Disclosure of Invention

Therefore, the invention aims to provide a fan capable of blowing air out at multiple angles, and accordingly provides the fan.

In order to solve the problem of single direction of the existing circulating fan, the invention provides a fan, which comprises: an air outlet frame body, the air outlet frame body having: the first air outlet is arranged in the extending direction of the air outlet frame body; the second air outlet is arranged on the circumferential surface of the air outlet frame body; the fan further includes: the guide vanes are arranged in the air outlet frame and are arranged between the first air outlet and the second air outlet, and driven by external force, the guide vanes are used for sealing the first air outlet and guiding fluid to the first state of the second air outlet and opening the second state of the first air outlet.

Optionally, the air outlet frame body includes a first frame body and a second frame body that are butted to each other, and the first frame body and the second frame body constitute an air outlet flow channel.

Optionally, the first air outlet is disposed at an axial end surface of the first frame, and the second air outlet is disposed on a circumferential surface of the second frame.

Optionally, the first frame body has a first annular frame and a first middle axis arranged at the center of the first frame;

the second frame body is provided with an annular second frame and a second middle shaft arranged in the center of the second frame;

an annular flow passage is formed between the first frame and the first middle shaft and between the second frame and the second middle shaft.

Optionally, the plurality of flow deflectors are radially arranged in the annular flow channel along the airflow outflow direction, and the flow deflectors are driven by an external force to rotate around the radial direction of the flow deflectors as a rotation center.

Optionally, the guide vane is configured as a fan-ring structure, and a first rotating part and a second rotating part are respectively arranged on two opposite arc sides of the guide vane;

a plurality of first rotating grooves are formed in the first middle shaft along the circumferential direction of the first middle shaft, and the second rotating part is rotatably arranged on the first rotating grooves;

a plurality of second rotating grooves are formed in the second frame along the circumferential direction of the second frame, and the first rotating portion is rotatably arranged on the second rotating grooves.

Optionally, in the airflow outflow direction, the first rotating groove is disposed below the second rotating groove.

Optionally, the flow deflector further comprises a driving assembly, a driving portion is arranged at a shaft end of the second rotating portion, which is far away from the body of the flow deflector, and the driving assembly drives the driving portion.

Optionally, the first bottom bracket is configured as a hollow structure, and the drive assembly is disposed within the first bottom bracket.

Optionally, the drive portion is configured as a first tooth portion provided at an axial end of the second rotation portion away from the body of the diaphragm.

Optionally, an annular groove is formed in the second middle shaft corresponding to the first rotating groove, and the first tooth portion is accommodated in the annular groove.

Optionally, the drive assembly comprises:

the driving motor is arranged in the first middle shaft, and a gear is arranged on the driving motor;

the rotary disc is arranged between the first middle shaft and the second middle shaft, a plurality of second tooth parts are arranged on the end face, facing the second middle shaft, of the rotary disc, and the second tooth parts are meshed with the first tooth parts;

the turntable also includes a third tooth portion that meshes with the gear.

Optionally, the driving part is configured as a lever disposed at an axial end of the second rotating part away from the body of the deflector.

Optionally, the stem comprises:

a connecting portion provided on the second rotating portion;

and the driving component drives the shifting part.

Optionally, the drive assembly comprises:

the rotating disc is arranged between the first middle shaft and the second middle shaft, a plurality of shifting teeth are arranged at intervals in the circumferential direction of the rotating disc, a shifting groove is formed between two adjacent shifting teeth, and the shifting part is clamped in the shifting groove;

the turntable also includes a toothed portion that meshes with the gear.

Optionally, a limiting plate is arranged on one side, close to the second frame body, of the toggle groove, and the limiting plate is used for limiting the toggle part to be separated from the toggle groove.

Optionally, the driving assembly further includes a connecting member disposed between the driving motor and the turntable, a rotating shaft is disposed on the connecting member in a protruding manner, and a first shaft hole and a second shaft hole for the rotating shaft to pass through are respectively disposed on the turntable and the second shaft.

Optionally, the connecting piece orientation the protrusion is provided with the stopper on the terminal surface of carousel, be provided with on the carousel with the spacing arch of stopper cooperation effect to the restriction the turned angle of carousel.

Optionally, in a radial direction of the air outlet flow channel, the plurality of guide vanes are rotatably disposed on the second frame body at intervals, and the plurality of guide vanes are constructed as a baffle structure for blocking the air outlet flow channel when in the first state.

Optionally, a clearance is provided at the matching and splicing position of two adjacent guide vanes.

Optionally, a first rotating portion and a second rotating portion are respectively disposed on two opposite side edges of the guide vane;

and a plurality of rotating grooves are formed in the inner side edge of the second frame body along the circumferential direction, and the first rotating part and the second rotating part are rotatably arranged in the two oppositely-arranged rotating grooves.

Optionally, the air conditioner further comprises at least one connecting piece, wherein the connecting piece is connected to the guide vanes and is suitable for being linked with the guide vanes.

Optionally, the connector comprises:

the body is in a strip shape and is arranged below the flow deflector;

the connecting parts are arranged on the body at intervals and are arranged corresponding to the flow deflectors in position;

wherein, a first connecting structure is arranged on the connecting part, and a second connecting structure which is matched with the first connecting structure is arranged on the flow guide sheet.

Optionally, the first connecting structure and the second connecting structure are configured as a shaft hole fitting structure.

Optionally, the guide vane device further comprises a driving structure, which is arranged on the second frame body and is adapted to drive the guide vane to rotate.

Optionally, the driving structure comprises:

a driving motor disposed on the second frame;

the first driving gear is arranged on a motor shaft of the driving motor, and the tooth end of the first driving gear acts on the connecting piece or at least one of the guide pieces.

Optionally, the air conditioner further comprises a second driving gear rotatably arranged on the second frame body, the second driving gear is meshed with the first driving gear, and the tooth end of the second driving gear acts on the connecting piece or at least one of the guide pieces.

Optionally, the air outlet grille is arranged at the first air outlet.

Optionally, still include the casing, the air-out framework sets up the upper end of casing, the lower tip of casing is provided with air inlet portion.

Optionally, the air conditioner further comprises a fan assembly arranged in the casing and adapted to drive outside air to flow into the air outlet frame through the air inlet portion.

Optionally, a mounting frame is disposed at a central position of the casing, and the fan assembly is disposed on the mounting frame.

Optionally, the fan assembly comprises:

the fan is arranged in the accommodating groove;

the impeller is arranged on the rotating shaft of the fan, a through hole is formed in the bottom of the accommodating groove, and the rotating shaft penetrates through the through hole to act on the impeller.

Optionally, the fan assembly further comprises:

and the fastening piece is arranged at the shaft end of the rotating shaft and used for preventing the impeller from being separated from the rotating shaft.

Optionally, the mobile terminal further comprises a base, and the casing is rotatably arranged on the base.

Optionally, an arc-shaped slide way is arranged on the base, and a slide block matched with the arc-shaped slide way is correspondingly formed on the machine shell.

The technical scheme of the invention has the following advantages:

1. the fan of the present invention comprises: the air-out framework, the air-out framework has: the first air outlet is arranged in the extending direction of the air outlet frame body; the second air outlet is arranged on the circumferential surface of the air outlet frame body; the guide vanes are arranged in the air outlet frame and arranged between the first air outlet and the second air outlet, and driven by external force, the guide vanes have a first state of closing the first air outlet and guiding fluid to the second air outlet and a second state of opening the first air outlet.

According to the fan, the first air outlet and the second air outlet are arranged on the air outlet frame body, the opening and closing of the first air outlet are controlled through the flow deflector structure, when the first air outlet is opened, the fan forms air outlet at an angle in the direction of the first air outlet, when the first air outlet is closed, airflow flows out of the second air outlet under the action of the flow deflector, and the second air outlet is formed on the peripheral surface of the air outlet frame body and can meet the air outlet of the fan within the range of 360 degrees in the circumferential direction, so that the air outlet angle of the fan is increased, and the air blowing requirements of users in different directions are met.

2. The air outlet frame body in the fan comprises a first frame body and a second frame body which are mutually butted, the first frame body and the second frame body form an air outlet flow channel, and the first frame body and the second frame body can be arranged to conveniently detach the air outlet frame body so as to clean dust deposition in the air outlet flow channel and replace corresponding parts.

3. In the fan, the first air outlet is arranged at the axial end face of the first frame, and the second air outlet is arranged on the circumferential surface of the second frame. Set up different air outlets on different frame structure, when needs are cleaned two kinds of air outlets in the aforesaid, the detachable is cleaned alone, prevents that the air outlet setting from being in same structure, and the structure is too complicated and there is the problem at clean dead angle.

4. In the fan, a plurality of flow deflectors are radially arranged in an annular flow passage along the airflow outflow direction, wherein the flow deflectors are driven by external force to rotate by taking the radial direction of the flow deflectors as a rotation center. The guide vane is rotatable in annular air duct, and when the fan did not work, the guide vane rotated, and the closure to annular air duct was realized to a plurality of guide vane concatenation, and then has prevented that the dust from entering into the wind channel through the air outlet department of air-out grid in, influencing the use of fan etc..

5. In the fan of the invention, the first rotating groove is arranged below the second rotating groove in the airflow outflow direction. First rotation groove is less than the second and rotates the groove setting, leads to installing the water conservancy diversion piece on first rotation groove and second rotation groove towards the one end perk of second framework, when the water conservancy diversion piece is in the closure state, can be better with air current direction side direction air outlet, when the increase side direction air outlet air output, reduces because of the noise that air current and wind channel wall collision produced.

6. The cross section of the air outlet flow channel in the air guide structure in the fan is circular, the circular baffle is constructed when the guide plates are in the first state to block the air outlet flow channel, the circular air outlet flow channel is beneficial to smooth circulation of air, and the guide plates can be spliced into the circular baffle structure when in the first state, so that the shape of the guide plates is matched with that of the circular flow channel, the sealing effect of the air outlet flow channel is ensured, and the dustproof effect is improved.

7. In the fan, the matched splicing position of two adjacent guide vanes is provided with the clearance, so that the clearance can avoid the interference problem of the adjacent guide vanes in the rotating process on one hand, and on the other hand, the clearance can ensure that the adjacent guide vanes are spliced better, the splicing gap is reduced, and the dustproof effect is improved.

8. The fan comprises a plurality of guide vanes, wherein the guide vane structure comprises a plurality of guide vanes which are connected with each other. The connecting piece is arranged, so that the multiple guide vanes can be driven simultaneously, and the driving efficiency of the guide vanes is improved.

Drawings

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

Fig. 1 is an exploded view of a fan in example 1 provided by the present invention;

fig. 2 is a schematic structural view of a flow deflector in a first state according to embodiment 1 of the present invention;

fig. 3 is a schematic structural view of a flow deflector in a second state according to embodiment 1 of the present invention;

fig. 4 is a schematic structural diagram of a first frame body in

embodiments

1 and 2 provided by the present invention;

fig. 5 is a schematic structural diagram of a second frame body in

embodiments

1 and 2 provided by the present invention;

fig. 6 is a schematic structural view of a flow deflector in embodiment 1 of the present invention;

fig. 7 is a schematic view of a closed state of a guide vane in embodiment 1 of the present invention;

FIG. 8 is a schematic structural view of a turntable in embodiment 1 of the present invention;

fig. 9 is a schematic structural view of an air outlet grille in

embodiments

1 and 2 provided by the present invention;

FIG. 10 is a schematic structural view of a connector according to

embodiments

1 and 2 of the present invention;

fig. 11 is a schematic structural diagram of a driving motor in

embodiments

1 and 2 provided by the present invention;

fig. 12 is a sectional view of a fan in embodiment 1 provided by the present invention;

fig. 13 is an exploded view of a fan in example 2 provided by the present invention;

fig. 14 is a schematic structural view of a flow deflector in a first state according to embodiment 2 of the present invention;

fig. 15 is a schematic structural view of a flow deflector in a second state according to embodiment 2 of the present invention;

fig. 16 is a schematic structural view of a flow deflector in embodiment 2 of the present invention;

fig. 17 is a schematic view of a closed state of a guide vane in embodiment 2 provided by the present invention;

FIG. 18 is a schematic structural view of a turntable in embodiment 2 of the present invention;

fig. 19 is a sectional view of a fan in embodiment 2 of the present invention;

fig. 20 is an exploded view of a fan in example 3 provided by the present invention;

fig. 21 is a schematic structural view of a flow deflector in a first state according to embodiment 3 of the present invention;

fig. 22 is a schematic structural view of a second state of a guide vane in embodiment 3 of the present invention;

fig. 23 is a cross-sectional view of a guide vane in a first state according to embodiment 3 of the present invention;

fig. 24 is a sectional view of a guide vane in a second state according to embodiment 3 of the present invention;

fig. 25 is a schematic structural view of a first frame body in embodiment 3 of the present invention;

fig. 26 is a schematic view of an opened state of a guide vane in embodiment 3 provided by the present invention;

FIG. 27 is a schematic structural view of a connecting member in example 3 provided by the present invention;

fig. 28 is an exploded view of a driving assembly in embodiment 3 provided by the present invention;

fig. 29 is a sectional view of a fan in embodiment 3 of the present invention.

Fig. 30 is an exploded view of the base, enclosure, and fan assembly of examples 1, 2, and 3 provided by the present invention;

fig. 31 is a schematic structural diagram of the chassis in

embodiments

1, 2, and 3 provided by the present invention;

fig. 32 is a schematic structural diagram of the base in

embodiments

1, 2, and 3 provided by the present invention.

Example 1 description of reference numerals:

1-air outlet grille;

2-a first frame; 21-a first frame; 22-a first medial axis; 221-a first rotating groove;

3-a second frame; 31-a second frame; 32-a second medial axis; 311-second rotation groove; 321-an annular groove; 322-second shaft hole;

4-flow deflectors; 41-a first rotating part; 42-a second rotating part; 43-first tooth;

5-a drive assembly; 51-a drive motor; 52-gear; 53-a turntable; 531-second tooth; 532-third tooth; 533-first shaft hole; 534-limit projection; 54-a connector; 541-a rotating shaft; 542-a limiting block.

Example 2 description of reference numerals:

1-air outlet grille;

4-flow deflectors; 41-a first rotating part; 42-a second rotating part; 43-a driving lever; 431-a connecting part; 432-toggle part;

5-a drive assembly; 51-a drive motor; 52-gear; 53-a turntable; 531-poking teeth; 532-tooth portion; 533-first shaft hole; 534-limiting hole; 535-toggle groove; 536-a limiting plate; 54-a connector; 541-a rotating shaft; 542-a limiting block.

Example 3 description of reference numerals

1-air outlet grille;

2-a first frame;

3-a second frame; 31-a rotating groove;

4-flow deflectors; 41-a first rotating part; 42-a second rotating part; 43-a second connecting structure; 5-a drive assembly; 51-a drive motor; 52-first drive gear; 53-a second drive gear;

6-connecting piece; 61-a body; 62-a connecting part; 63-first connecting structure.

The examples share reference numbers:

7-a housing; 71-an air inlet part; 72-a slide block;

8-a fan assembly; 81-a fan; 82-an impeller; 83-a fastener;

9-a mounting frame;

10-a base; 101-arc slideway.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

As shown in fig. 1 to 12 and 30 to 32, a fan provided for the present embodiment includes: the air-out framework, the air-out framework has: the first air outlet is arranged in the extending direction of the air outlet frame body; the second air outlet is arranged on the circumferential surface of the air outlet frame body; the flow deflectors 4 are arranged in the air outlet frame and are arranged between the first air outlet and the second air outlet, and the flow deflectors 4 are driven by external force to have a first state of closing the first air outlet and guiding fluid to the second air outlet and a second state of opening the first air outlet. The fan is through setting up first air outlet b and second air outlet an on the air-out framework, through the switching of the first air outlet b of water conservancy diversion piece structure control, when first air outlet b opens, the fan forms the air-out of an angle in first air outlet b's direction, when first air outlet b is closed, the air current is under the effect of water conservancy diversion piece, from second air outlet a outflow, because of second air outlet a is the shaping on the global of air-out framework, it can satisfy the 360 degrees within ranges of air-out of circumference of fan, the fan in this embodiment has increased the air-out angle, in order to satisfy the not equidirectional demand of blowing of user.

It should be noted that the air outlet frame is a frame structure disposed on the fan base 10, an air outlet flow channel is formed inside the air outlet frame, and the air flow enters the air outlet frame from the base 10 and then enters the outside.

It should be noted that, the fan in this embodiment is a circulation fan, and a fan is disposed at an air inlet at a lower end of the circulation fan, and guides external air flow into the air duct, and flows out to the outside through the air outlet grid in this embodiment. As shown in fig. 12, the first air outlet b is disposed in the axial direction of the rotating shaft of the fan, and the airflow absorbed by the fan can directly flow out from the first air outlet b to the outside, so as to realize the air outlet function. The second air outlet a is arranged on the circumferential surface of the air outlet frame body, and air outlet is formed in the circumferential direction of the head assembly of the fan after the second air outlet a is guided by the flow deflectors. As a variation, the fan in this embodiment is also a floor fan, a desk fan, or the like.

Furthermore, the air outlet frame body comprises a first frame body 2 and a second frame body 3 which are mutually butted, the first frame body 2 and the second frame body 3 construct an air outlet flow channel, and the arrangement of the first frame body 2 and the second frame body 3 can facilitate the disassembly of the air outlet frame body, so that the dust deposition in the air outlet flow channel can be cleaned and corresponding parts can be replaced. The first outlet b is provided at an axial end surface of the first frame 21, and the second outlet a is provided on a circumferential surface of the second frame 31. Set up different air outlets on different frame structure, when needs are cleaned two kinds of air outlets in the aforesaid, the detachable is cleaned alone, prevents that the air outlet setting from being in same structure, and the structure is too complicated and there is the problem at clean dead angle.

As shown in fig. 4 and 5, it shows a specific structure of the first frame body 2 and the second frame body 3:

as shown in fig. 4, the first frame body 2 has a ring-shaped first frame 21, and an installation groove is provided at an upper end portion of the first frame 21, and a central area of the installation groove constitutes the first outlet b. The air outlet grille 1 is installed in the installation groove of the first frame 21. The first middle shaft 22 is arranged at the center of the first frame 21, a plurality of spokes are bridged between the circumferential surface of the first middle shaft 22 and the inner side surface of the first frame 21, the spokes in the embodiment are arranged at four positions and used as deformation, and other spokes can be used as well, so that the first middle shaft 22 can be supported and fixed.

As shown in fig. 5, the second housing 3 has an annular second frame 31, and an upper end portion of the second frame 31 is formed with a mounting hole to be fitted to a lower end surface of the first frame 21. A second middle shaft 32 is arranged in the center of the second frame 31; a plurality of spokes are bridged between the circumferential surface of the second middle axle 32 and the inner side surface of the second frame 31, the number of the spokes in the embodiment is four, and the spokes with other numbers can be used as a deformation, so that the second middle axle 32 can be supported and fixed. Further, a plurality of strip-shaped holes are formed on the circumferential surface of the second frame 31, and the strip-shaped holes are configured as the second air outlet a, so as to realize the circumferential air outlet function.

Therefore, in this embodiment, an annular flow passage is formed between the inner side surface of the first frame 21 and the circumferential surface of the first central shaft 22, and between the inner side surface of the second frame 31 and the circumferential surface of the second central shaft 32, so that the airflow from the fan can pass through the annular flow passage.

On the basis of the above embodiment, as a further limitation, in this embodiment, the plurality of flow deflectors 4 are radially arranged in the annular flow channel; the guide vanes 4 are driven by external force to rotate by taking the radiation direction of the guide vanes as a rotation center, and the guide vanes 4 have a first state of closing the annular flow passage and a second state of opening the annular flow passage under a rotation preset angle. Further, the guide vane 4 realizes opening and closing of the annular air duct in the axial flow direction of the circulating fan. Specifically, when the air duct in the axial flow direction needs to be opened, as shown in fig. 3, the guide vane 4 is driven by an external force to rotate by a certain angle, where the angle is an included angle between the vane surface of the guide vane and the fluid flow direction, when the included angle is not 90 degrees, the air duct is in an opened state, and when the included angle is 90 degrees, the guide vanes are butted together to close the annular flow passage. The event sets up the water conservancy diversion piece in the below of air-out grid in this embodiment, and the water conservancy diversion piece is rotatable in annular wind channel, and when the fan inoperative, the water conservancy diversion piece rotates, and the concatenation of a plurality of water conservancy diversion piece realizes the closure to annular wind channel, and then has prevented that the air outlet department of dust through the air-out grid from entering into in the wind channel, influences the use of fan etc. and realizes the function of second air outlet a air-out simultaneously.

On the basis of the above-mentioned embodiment, as a further limitation, as shown in fig. 6, a specific structure of the baffle 4 is shown, in this embodiment, the baffle 4 is configured as a fan-ring structure, a first rotating portion 41 and a second rotating portion 42 are respectively arranged on two opposite arcs of the baffle 4, and both the first rotating portion 41 and the second rotating portion 42 are of a rotating shaft structure. The sector ring structure in the embodiment is simple to process, and the sector ring structure can be spliced into a circular ring structure to better adapt to the annular flow channel, and the annular flow channel is blocked, so that the sealing performance of the annular flow channel is improved, and the dustproof effect is improved.

In addition to the above embodiments, as a further limitation, the baffle 4 in this embodiment is installed on the first frame body 2 and the second frame body 3, specifically, as shown in fig. 4, a plurality of first rotating grooves 221 are provided on the first central axis 22 along the circumferential direction thereof, the second rotating portion 42 is rotatably provided on the first rotating grooves 221, the first rotating grooves 221 support the first rotating portion 41, and at the same time, the second rotating portion 42 can rotate in the first rotating grooves 221, so that the structure is simple, and the baffle is convenient to install.

In addition to the above embodiment, as a further limitation, as shown in fig. 5, a plurality of second rotating grooves 311 are provided in the second bezel 31 along the circumferential direction thereof, and the first rotating portion 41 is rotatably provided in the second rotating grooves 311. The second rotating groove 311 can also support the first rotating part 41, and has a simple structure and convenient installation of the guide vane.

Further, in the present embodiment, the first rotation groove 221 is disposed below the second rotation groove 311 in the airflow outflow direction. First rotating groove 221 is less than the setting of second rotating groove, leads to installing the water conservancy diversion piece on first rotating groove 221 and the second rotating groove towards the one end perk of second framework 3, when water conservancy diversion piece 4 is in the closure state, can be better with air current direction side direction air outlet, when increasing side direction air outlet air output, reduces because of the noise that air current and wind channel wall collision produced.

In addition to the above embodiment, as a further limitation, in order to facilitate driving of the guide vane, the present invention further includes a driving assembly 5, as shown in fig. 6, a first tooth portion 43 is disposed at a shaft end of the second rotating portion 42 away from the body of the guide vane 4, the driving assembly 5 drives the first tooth portion 43, and the driving assembly 5 drives the first tooth portion 43, so as to drive the guide vane 4.

The first middle shaft 22 in this embodiment is configured as a hollow structure, the driving assembly 5 is disposed in the first middle shaft 22, and the first middle shaft 22 is covered on the driving assembly 5, so as to provide a dust-proof effect for the driving assembly 5.

Furthermore, in the present embodiment, an annular groove 321 is disposed at the position of the second central axle 32 corresponding to the first rotating groove 221, the first tooth portion 43 is accommodated in the annular groove 321, and the first central axle 22 is covered on the annular groove 321, so that a dust-proof protection effect on the first tooth portion 43 can be achieved.

In addition to the above embodiment, as further limited, as shown in fig. 8, the driving assembly 5 includes: the driving motor 51 is arranged in the first middle shaft 22, a gear 52 is arranged on the driving motor 51, and the gear 52 is installed on a motor shaft of the driving motor 51 in an interference fit or key installation mode. The rotating disc 53 is arranged between the first middle shaft 22 and the second middle shaft 32, a plurality of second tooth parts 531 are arranged on the end face, facing the second middle shaft 32, of the rotating disc 53, and the second tooth parts 531 are meshed with the first tooth parts 43; the middle position part of carousel processes into half moon shape breach, has processed the third tooth portion 532 with gear 52 meshing in the medial surface department of breach, drives gear 52 through driving motor 51 and rotates, and gear 52 drives the carousel 53 through third tooth portion 532 and rotates, and carousel 53 drives the water conservancy diversion piece 4 through second tooth portion 531 and rotates to the realization is to the adjustment of the turned angle of water conservancy diversion piece 4.

In addition, as shown in fig. 10, the driving assembly 5 further includes a connecting member 54 disposed between the driving motor 51 and the rotating plate 53, the connecting member 54 is provided with a protruding rotating shaft 541, and the rotating plate 53 and the second middle shaft 32 are respectively provided with a first shaft hole 533 and a second shaft hole 322 through which the rotating shaft 541 passes. First, the driving motor 51 is locked to the connecting member 54 by a screw, and a through hole for passing a motor shaft is formed in the connecting member 54. The second shaft hole 322 is a blind hole structure, the shaft end of the rotating shaft 541 is abutted against the blind hole, the upper end of the first middle shaft 22 is opened, and when the air outlet grille 1 is installed on the first frame body 2, the air outlet grille 1 is pressed on the driving motor, so that the connecting piece 54 is abutted against the second shaft hole 322 of the second middle shaft 32, and the fixing of the connecting piece 54 is realized. And a swivel plate 53 is rotatably mounted between the connecting member 54 and the upper end surface of the second bottom bracket 32.

On the basis of the above embodiment, as shown in fig. 8 and fig. 10, as a further limitation, a limiting block 542 is convexly disposed on an end surface of the connecting member 54 facing the rotating disc 53, a limiting protrusion 534 cooperating with the limiting block 542 is disposed on the rotating disc 53, and after the rotating disc 53 rotates a certain angle, the limiting protrusion 534 thereon is blocked by the limiting block 543 to limit the rotating angle of the rotating disc 53.

In addition to the above embodiments, as shown in fig. 30 and 31, the air outlet frame further includes a casing 7, and the air outlet frame is detachably attached to the upper end portion of the casing 7, and both are locked together by a screw. The lower end of the casing 7 is provided with an air inlet portion 71, the air inlet portion 71 is of a common grid structure, and the grid can have a certain inclination angle so as to facilitate the diversion of the outside air flow. The shape of the air inlet part 71 can also be common round hole shape, and can be designed according to the requirement of air inlet amount. An accommodating space is formed in the housing 7 to accommodate related structural components in the fan.

On the basis of the above embodiment, as a further limitation, the air-conditioning device further includes a fan assembly 8, which is disposed in the housing 7 and is adapted to drive outside air to be guided into the air outlet frame through the air inlet portion 71. In order to realize the installation of the fan assembly 8, a mounting bracket 9 is installed at a central position of the housing 7, and the fan assembly 8 is disposed on the mounting bracket 9.

On the basis of the above embodiment, as a further limitation, the fan assembly 8 includes: fan 81, the one end of mounting bracket 9 towards the lower extreme of casing 7 is provided with the storage tank, and fan 81 installs in the storage tank, and the tank bottom department of storage tank is provided with the mounting hole, mutually supports with the fixed orifices from the area on fan 81 to the groove bottom of fan 81 fixed storage tank is fixed to the mode of screw locking. And the impeller 82 is arranged on a rotating shaft of the fan 81, a through hole is formed in the bottom of the accommodating groove, and the rotating shaft penetrates through the through hole to act on the impeller 82. The impeller 82 is provided with a shaft hole, and the rotating shaft and the shaft hole are in interference fit or key fit or D-shaped shaft hole fit.

On the basis of the above embodiment, as a further limitation, the fan assembly 8 further includes: and a fastener 83, the fastener 83 being disposed at the shaft end of the rotating shaft to prevent the impeller 82 from being pulled out of the rotating shaft, and the fastener 83 being fixed at the shaft end by interference fit or being fixed at the shaft end by screw thread.

In addition, as a further limitation, the above embodiment further includes a base 10, and the housing 7 is rotatably disposed on the base 10. The base 10 is provided with an arc-shaped slide way 101, and the casing 7 is correspondingly formed with a slide block 72 matched with the arc-shaped slide way 101 so as to further increase the air outlet range of the fan.

Example 2

As shown in fig. 4, 5, 9-11, 13-19, and 30-32, compared with the fan structure in embodiment 1, the driving manner of the rotation of the guide vane of the fan structure in this embodiment is changed as follows:

as shown in fig. 16, a specific structure of the baffle 4 is shown, in this embodiment, the baffle 4 is configured as a fan-ring structure, a first rotating portion 41 and a second rotating portion 42 are respectively disposed on two opposite arcs of the baffle 4, and both the first rotating portion 41 and the second rotating portion 42 are of a rotating shaft structure. The sector ring structure in the embodiment is simple to process, and the sector ring structure can be spliced into a circular ring structure to better adapt to the annular flow channel, and the annular flow channel is blocked, so that the sealing performance of the annular flow channel is improved, and the dustproof effect is improved.

In this embodiment, in order to facilitate driving of the baffle, the driving assembly 5 is further included, as shown in fig. 16, a shift lever 43 is disposed at a shaft end of the second rotating portion 42 away from the body of the baffle 4, the driving assembly 5 drives the shift lever 43, and the shift lever 43 is driven by the driving assembly 5 to further drive the baffle 4. The shift lever 43 in this embodiment includes: a connecting portion 431 provided on the second rotating portion 42, the connecting portion 431 having a strip plate structure integrally formed at an axial end of the second rotating portion 42; and a toggle part 432 vertically arranged on the connecting part 431, wherein the toggle part 432 is a common cylindrical rod-shaped structure, and the drive component 5 drives the toggle part 432.

As shown in fig. 18, the driving assembly 5 includes: the driving motor 51 is arranged in the first middle shaft 22, a gear 52 is arranged on the driving motor 51, and the gear 52 is installed on a motor shaft of the driving motor 51 in an interference fit or key installation mode. The rotating disc 53 is arranged between the first middle shaft 22 and the second middle shaft 32, a plurality of shifting teeth 531 are machined on the circumferential direction of the rotating disc 53, intervals exist between two adjacent shifting teeth, a shifting groove 535 is formed in the interval space, the shifting part 432 is clamped in the shifting groove 535, and when the rotating disc 53 rotates, the shifting rod 43 clamped in the shifting groove 535 is driven to rotate. Furthermore, the middle position part of the turntable is processed into a half-moon-shaped notch, a tooth part 532 meshed with the gear 52 is processed on the inner side surface of the notch, the gear 52 is driven to rotate by the driving motor 51, the gear 52 drives the turntable 53 to rotate by the tooth part 532, and the turntable 53 drives the flow deflector 4 to rotate by the shifting teeth 531, so that the rotation angle of the flow deflector 4 is adjusted.

On the basis of the above embodiment, as a further limitation, a limiting plate 536 is disposed on a side of the dial slot 535 close to the second frame, the limiting plate 536 is connected between the two dial teeth 531, and when the dial portion 432 rotates in the dial slot 535, the limiting plate 536 can restrict the movement stroke of the dial portion 432 to limit the dial portion 432 to disengage from the dial slot 535.

As shown in fig. 10, the driving assembly 5 further includes a connecting member 54 disposed between the driving motor 51 and the rotating plate 53, the connecting member 54 is provided with a protruding rotating shaft 541, and the rotating plate 53 and the second middle shaft 32 are respectively provided with a first shaft hole 533 and a second shaft hole 322 for the rotating shaft 541 to penetrate through. First, the driving motor 51 is locked to the connecting member 54 by a screw, and a through hole for passing a motor shaft is formed in the connecting member 54. The second shaft hole 322 is a blind hole structure, the shaft end of the rotating shaft 541 is abutted against the blind hole, the upper end of the first middle shaft 22 is opened, and when the air outlet grille 1 is installed on the first frame body 2, the air outlet grille 1 is pressed on the driving motor, so that the connecting piece 54 is abutted against the second shaft hole 322 of the second middle shaft 32, and the fixing of the connecting piece 54 is realized. And a swivel plate 53 is rotatably mounted between the connecting member 54 and the upper end surface of the second bottom bracket 32.

On the basis of the above embodiment, as a further limitation, the end surface of the connecting member 54 facing the rotating disc 53 is convexly provided with a limiting block 542, the rotating disc 53 is provided with a limiting hole 534 cooperating with the limiting block 542, the limiting hole 534 is an arc hole, and when the connecting member 54 is installed, the limiting block 542 is movably inserted into the limiting hole 534 and can move in the limiting hole 534. When the turntable 53 rotates a certain angle, the limiting block 543 thereon is blocked by the limiting hole 534 to limit the rotation angle of the turntable 53. Furthermore, the adjustment of the range of the rotation angle of the rotary disc 3 can be realized by setting the size of the arc hole.

Therefore, compared with the structure of the flow deflector in embodiment 1, the driving end of the driven structure is changed from a gear structure to a deflector rod structure, so that the rotation function of the flow deflector is driven.

Example 3

As shown in fig. 20 to 32, another fan provided for this embodiment also includes the following features:

the air-out framework, the air-out framework has: the first air outlet is arranged in the extending direction of the air outlet frame body; the second air outlet is arranged on the circumferential surface of the air outlet frame body; the flow deflectors 4 are arranged in the air outlet frame and are arranged between the first air outlet and the second air outlet, and the flow deflectors 4 are driven by external force to have a first state of closing the first air outlet and guiding fluid to the second air outlet and a second state of opening the first air outlet. The fan is through setting up first air outlet b and second air outlet an on the air-out framework, through the switching of the first air outlet b of water conservancy diversion piece structure control, when first air outlet b opens, the fan forms the air-out of an angle in first air outlet b's direction, when first air outlet b is closed, the air current is under the effect of water conservancy diversion piece, from second air outlet a outflow, because of second air outlet a is the shaping on the global of air-out framework, it can satisfy the 360 degrees within ranges of air-out of circumference of fan, the fan in this embodiment has increased the air-out angle, in order to satisfy the not equidirectional demand of blowing of user.

The difference is that the air outlet flow channel in this embodiment is a common circular flow channel, and in the radial direction of the air outlet flow channel, the plurality of guide vanes 4 are rotatably disposed on the second frame 3 at intervals, and when the plurality of guide vanes 4 are in the first state, a circular baffle is constructed to block the air outlet flow channel. The design of circular shape air-out runner does benefit to gaseous smooth and easy circulation, and a plurality of guide plates 4 can splice each other when first state and be circular shape baffle structure, realize in the shape with circular runner's adaptation to guarantee the closed effect to the air-out runner, and then improve dirt-proof effect, and guarantee the air-out of second air outlet a.

A clearance 44 is arranged at the matching and splicing position of two adjacent guide vanes 4. The number of the guide vanes 4 in this embodiment is seven, and clearance 44 is processed on the middle three guide vanes 4. Because the guide vane 4 is designed along the radial direction of the air outlet flow channel, the guide vane 4 is closer to the central position of the air outlet flow channel in length, and the length is larger, so that the air outlet flow channel is better blocked. As a deformation, the number of the guide vanes 4 can be set by itself according to the area of the air outlet flow passage. The clearance 44 can avoid the interference problem of the adjacent guide vanes 4 in the rotating process, and on the other hand, the clearance 44 can ensure that the adjacent guide vanes 2 are better spliced, so that the spliced gap is reduced, and the dustproof effect is improved.

The main body of the baffle 4 is a common slender plate structure, and a first rotating portion 41 and a second rotating portion 42 are respectively formed on two opposite side edges of the baffle 4, and in this embodiment, the first rotating portion 41 and the second rotating portion 42 are rotating shaft structures and are coaxially arranged to ensure the installation stability of the baffle 4. On the inner side of the second frame 3, a plurality of rotating grooves 31 are circumferentially formed, the first rotating portion 41 and the second rotating portion 42 are rotatably disposed in the two oppositely disposed rotating grooves 31, and the guide vane 4 can rotate in the rotating grooves 31 under the action of external force.

In order to realize the simultaneous driving of the plurality of guide vanes and improve the driving efficiency of the guide vanes, the guide vane driving device further comprises two connecting pieces 6 which are connected to the plurality of guide vanes 4 and are suitable for linking the plurality of guide vanes 4. The seven guide vanes 4 in this embodiment are connected into a whole by two connecting pieces 6 respectively, with the guide vane 4 in the middle as a boundary. As a variant, it is also possible to connect all guide vanes 4 with only one connecting piece 6.

The connecting member 6 in this embodiment includes: the body 61 is in a strip shape and is arranged below the flow deflector 4; the connecting parts 62 are arranged on the body 61 at intervals and are arranged corresponding to the flow deflectors 4 in position; wherein, the connecting portion 62 is provided with a first connecting structure 63, and the baffle 4 is provided with a second connecting structure 43 cooperating with the first connecting structure 63. The first connecting structure 63 and the second connecting structure 43 in this embodiment are configured as shaft hole fitting structures. As a variation, the first connecting structure 63 and the second connecting structure 43 may also be a snap structure or the like. The first connecting structure 63 in this embodiment is specifically a rotating shaft formed on the connecting portion 62, the second connecting portion 43 is a shaft hole formed on the baffle 4, and specifically, the second connecting portion 43 is folded to form a lug structure, and the shaft hole is machined on the lug. Wherein a sufficient space is reserved between adjacent connecting parts to prevent the connecting part 6 from influencing the rotation of the guide vane 4.

The embodiment further comprises a driving structure 5, which is arranged on the second frame body 3 and is suitable for driving the guide vane 4 to rotate. The drive structure 5 includes: a drive motor 51 provided on the frame 1; the first driving gear 52 is disposed on the motor shaft of the driving motor 51, and the tooth end of the first driving gear acts on one of the guide vanes 4 as a deformation, and the tooth end of the first driving gear can act on a plurality of guide vanes 4 simultaneously. As a variant, the tooth ends mentioned above can also act on the connecting piece 6.

The embodiment further includes a second driving gear 53 rotatably disposed on the second frame 3, the second driving gear 53 is engaged with the first driving gear 52, and the teeth of the second driving gear 53 act on the guide vane 4, so that two connecting members 4 in the embodiment divide seven guide vanes 4 into two, and therefore two gears are required to drive the guide vanes respectively.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A fan, comprising:

an air outlet frame body, the air outlet frame body having:

the first air outlet is arranged in the extending direction of the air outlet frame body;

the second air outlet is arranged on the circumferential surface of the air outlet frame body;

the fan further includes:

the guide vanes (4) are arranged in the air outlet frame and are arranged between the first air outlet and the second air outlet, and the guide vanes (4) are driven by external force to have a first state of closing the first air outlet and guiding fluid to the second air outlet and a second state of opening the first air outlet.

2. The fan according to claim 1, wherein the air outlet frame comprises a first frame (2) and a second frame (3) which are butted with each other, and the first frame (2) and the second frame (3) constitute an air outlet flow channel.

3. The fan according to claim 2, wherein the first frame body (2) has a first frame (21) having a ring shape and a first central axis (22) provided at the center of the first frame (21);

the second frame body (3) is provided with an annular second frame (31) and a second middle shaft (32) arranged in the center of the second frame (31);

an annular flow passage is formed between the first frame (21) and the first middle shaft (22), and between the second frame (31) and the second middle shaft (32).

4. The fan according to claim 3, characterized in that the first outlet is provided at an axial end face of the first rim (21) and the second outlet is provided on a circumferential face of the second rim (31).

5. The fan as claimed in claim 4, wherein a plurality of said guide vanes (4) are radially arranged in said annular flow passage along the outflow direction of the air flow, wherein said guide vanes (4) are driven by external force to rotate around the radial direction of said guide vanes (4).

6. The fan according to any of the claims 2-5, characterized in that the guide vane (4) is constructed as a fan ring structure, and that a first rotating part (41) and a second rotating part (42) are respectively arranged on two opposite arcs of the guide vane (4);

a plurality of first rotating grooves (221) are formed in the first middle shaft (22) along the circumferential direction of the first middle shaft, and the second rotating part (42) is rotatably arranged on the first rotating grooves (221);

the second frame (31) is provided with a plurality of second rotating grooves (311) along the circumferential direction, and the first rotating portion (41) is rotatably arranged on the second rotating grooves (311).

7. The fan as claimed in claim 6, wherein the first rotation groove (221) is disposed below the second rotation groove (311) in the air outflow direction.

8. The fan according to claim 6, further comprising a driving assembly (5), wherein a driving portion is provided at an axial end of the second rotating portion (42) away from the body of the guide vane (4), and the driving assembly (5) drives the driving portion.

9. The fan according to claim 8, characterized in that the first central shaft (22) is configured as a hollow structure, the drive assembly (5) being arranged within the first central shaft (22).

10. The fan according to claim 8 or 9, characterized in that the drive is configured as a first tooth (43) arranged at an axial end of the second rotary part (42) remote from the body of the guide vane (4).

11. The fan according to claim 10, wherein the second central shaft (32) is provided with an annular groove (321) corresponding to the first rotation groove (221), and the first tooth portion (43) is received in the annular groove (321).

12. The fan according to claim 11, characterized in that said drive assembly (5) comprises:

the driving motor (51) is arranged in the first middle shaft (22), and a gear (52) is arranged on the driving motor (51);

the rotating disc (53) is arranged between the first middle shaft (22) and the second middle shaft (32), a plurality of second tooth parts (531) are arranged on the end face, facing the second middle shaft (32), of the rotating disc (53), and the second tooth parts (531) are meshed with the first tooth parts (43);

the rotary plate (53) further comprises a third toothed portion (532) meshing with the gear wheel (52).

13. The fan according to claim 8 or 9, characterized in that the drive is configured as a lever (43) arranged at an axial end of the second rotation portion (42) remote from the body of the deflector (4).

14. The fan according to claim 13, wherein the lever (43) comprises:

a connecting portion (431) provided on the second rotating portion (42);

and a toggle part (432) vertically arranged on the connecting part (431), wherein the drive component (5) drives the toggle part (432).

15. The fan according to claim 14, characterized in that said drive assembly (5) comprises:

the rotating disc (53) is arranged between the first middle shaft (22) and the second middle shaft (32), a plurality of shifting teeth (531) are arranged at intervals in the circumferential direction of the rotating disc (53), a shifting groove (535) is formed between every two adjacent shifting teeth, and the shifting part (432) is clamped in the shifting groove (535);

the dial (53) further comprises a toothed portion (532) meshing with the gear (52).

16. The fan as claimed in claim 15, wherein a limit plate (536) is disposed on a side of the dial groove (535) close to the second frame body (3), and the limit plate (536) is used to limit the dial portion (432) from being disengaged from the dial groove (535).

17. The fan as claimed in any one of claims 11-12 and 14-16, wherein the driving assembly (5) further comprises a connecting member (54) disposed between the driving motor (51) and the rotary plate (53), the connecting member (54) is provided with a protruding rotating shaft (541), and the rotary plate (53) and the second central shaft (32) are respectively provided with a first shaft hole (533) and a second shaft hole (322) for passing through the rotating shaft (541).

18. The fan as claimed in claim 17, wherein a stop block (542) is convexly disposed on an end surface of the connecting member (54) facing the rotary plate (53), and a stop protrusion (534) cooperating with the stop block (542) is disposed on the rotary plate (53) to limit a rotation angle of the rotary plate (53).

19. The fan as claimed in claim 4, wherein in a radial direction of the outlet air flow path, the plurality of baffles (4) are rotatably disposed on the second frame (3) at intervals, and the plurality of baffles (4) constitute a baffle structure for blocking the outlet air flow path when in the first state.

20. The fan according to claim 19, wherein a clearance (44) is provided at the mating junction of two adjacent guide vanes (4).

21. The fan according to claim 20, wherein the guide vane (4) is provided with a first rotating portion (41) and a second rotating portion (42) on opposite sides thereof, respectively;

a plurality of rotating grooves (31) are formed in the inner side edge of the second frame body (3) along the circumferential direction, and the first rotating portion (41) and the second rotating portion (42) are rotatably arranged in the rotating grooves (31) which are oppositely arranged.

22. The fan as claimed in any one of claims 19 to 21, further comprising at least one connecting member (6) connected to the plurality of guide vanes (4) and adapted to link the plurality of guide vanes (4).

23. The fan according to claim 22, characterized in that said connection (6) comprises:

the body (61) is in a strip shape and is arranged below the flow deflector (4);

the connecting parts (62) are arranged on the body (61) at intervals and are arranged corresponding to the flow deflectors (4) in position;

wherein, a first connecting structure (63) is arranged on the connecting part (62), and a second connecting structure (43) which is matched with the first connecting structure (63) is arranged on the flow deflector (4).

24. The fan as claimed in claim 23, wherein the first connecting structure (63) and the second connecting structure (43) are configured as a shaft hole fitting structure.

25. The fan according to claim 24, further comprising a driving structure (5) provided on the second frame body (2) and adapted to drive the rotation of the guide vanes (4).

26. The fan according to claim 25, characterized in that said driving structure (5) comprises:

a drive motor (51) provided on the second frame (3);

a first drive gear (52) arranged on the motor shaft of the drive motor (51), the tooth end of which acts on the connecting piece (6) or at least one of the guide vanes (4).

27. The fan as claimed in claim 26, further comprising a second driving gear (53) rotatably provided on the second frame body (3), the second driving gear (53) being engaged with the first driving gear (52), a tooth end of the second driving gear (53) acting on the connecting member (6) or at least one of the guide vanes (4).

28. The fan according to claim 1, further comprising an air outlet grille (1) provided at the first air outlet.

29. The fan according to claim 1, further comprising a casing (7), wherein the air outlet frame is disposed at an upper end of the casing (7), and an air inlet portion (71) is disposed at a lower end of the casing (7).

30. The fan as claimed in claim 29, further comprising a blower assembly (8) disposed in the housing (7) and adapted to drive outside air to be guided into the air outlet frame through the air inlet portion (71).

31. The fan according to claim 30, wherein a mounting bracket (9) is provided at a central position of the casing (7), and the fan assembly (8) is provided on the mounting bracket (9).

32. The fan according to claim 31, characterized in that said fan assembly (8) comprises:

the fan (81), one end of the mounting rack (9) facing the lower end of the machine shell (7) is provided with a containing groove, and the fan (81) is installed in the containing groove;

the impeller (82) is arranged on the rotating shaft of the fan (81), a through hole is formed in the bottom of the accommodating groove, and the rotating shaft penetrates through the through hole to act on the impeller (82).

33. The fan according to claim 33, characterized in that the fan assembly (8) further comprises:

a fastener (83) disposed at a shaft end of the shaft to block the impeller (82) from coming out of the shaft.

34. The fan as claimed in claim 29, further comprising a base (10), wherein the housing (7) is rotatably disposed on the base (10).

35. The fan according to claim 34, wherein an arc-shaped slideway (101) is arranged on the base (10), and a sliding block (72) matched with the arc-shaped slideway (101) is correspondingly formed on the machine shell (7).