CN217401233U

CN217401233U - Tower type fan

Info

Publication number: CN217401233U
Application number: CN202220813441.3U
Authority: CN
Inventors: 王永炯; 刘凯
Original assignee: Shenzhen Curious Exploration Technology Co ltd
Current assignee: Shenzhen Curious Exploration Technology Co ltd
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-09-09
Anticipated expiration: 2032-04-06

Abstract

The embodiment of the utility model discloses tower fan, include: a base; the main air outlet shell is connected with the base and provided with a first end close to the base, a second end far away from the base and a side surface between the first end and the second end, a first air inlet and a first air outlet are formed in the side surface, and an air channel communicated with the first air inlet and the first air outlet is formed in the main air outlet shell; the main fan is arranged in the air duct; the auxiliary air outlet shell is arranged at the second end, far away from the base, of the main air outlet shell and can move relative to the main air outlet shell along the direction far away from or close to the base; the auxiliary air outlet shell is provided with a second air outlet; and the auxiliary fan is arranged in the auxiliary air outlet shell corresponding to the second air outlet and can move along with the movement of the auxiliary air outlet shell. The embodiment of the utility model discloses tower fan has the big and easily accomodate characteristics of the amount of wind.

Description

Tower type fan

Technical Field

The utility model relates to the technical field of household appliances, especially, relate to a tower fan.

Background

The tower fan has a unique column type shape and does not have exposed flabellum, compares in traditional floor fan and has pleasing to the eye, saves space's advantage, but the design of flabellum-free leads to current tower fan often amount of wind-force all less, and the volume of the tower fan of big amount of wind can increase, consequently has again to accomodate inconvenient defect.

Therefore, how to make tower fan have the characteristics of big amount of wind and being convenient for to accomodate concurrently becomes the utility model discloses the problem that needs solve urgently.

SUMMERY OF THE UTILITY MODEL

Therefore, for overcoming at least partial defect and not enough among the prior art, the embodiment of the utility model provides a tower fan has the big and easily accomodate characteristics of the amount of wind.

Specifically, an embodiment of the present invention provides a tower fan, including: a base; the main air outlet shell is connected with the base and provided with a first end close to the base, a second end far away from the base and a side surface between the first end and the second end, a first air inlet and a first air outlet are formed in the side surface, and an air channel communicated with the first air inlet and the first air outlet is formed in the main air outlet shell; the main fan is arranged in the air duct; the auxiliary air outlet shell is arranged at the second end, far away from the base, of the main air outlet shell, and can move relative to the main air outlet shell along the direction far away from or close to the base; the auxiliary air outlet shell is provided with a second air outlet; and the auxiliary fan is arranged in the auxiliary air outlet shell corresponding to the second air outlet and can move along with the movement of the auxiliary air outlet shell.

In one embodiment, the main outlet casing includes: the first shell is connected with the base, the first air inlet is formed in one end, close to the base, of the first shell, and the main fan is arranged in the first shell and located at one end, far away from the base, of the first air inlet; the second shell is arranged at one end, far away from the base, of the first shell, and the first air outlet is arranged on the second shell; the auxiliary air outlet shell is sleeved in the second shell; the first shell is sleeved in the second shell, and the second shell is arranged in the first shell.

In one embodiment, the tower fan further comprises: the first guide structure is fixed in the main air outlet shell; the first transmission assembly is arranged in the auxiliary air outlet shell and is matched and connected with the first guide structure, and the first transmission assembly can move relative to the first guide structure to drive the auxiliary air outlet shell to move along the direction far away from or close to the base; the first driving assembly is arranged in the auxiliary air outlet shell and located at one end, close to the main air outlet shell, of the auxiliary air outlet shell, and the first driving assembly is connected with the first driving assembly to drive the first driving assembly to move relative to the first guiding structure.

In one embodiment, the first guide structure comprises a first screw having a first external thread; the first transmission assembly includes: a second screw having a first internal thread; the second screw rod is sleeved on the first screw rod, and the first external thread is meshed with the first internal thread; the first gear is fixedly connected with the second screw rod; the first fixing plate is fixed on the auxiliary air outlet shell, and the first fixing plate is connected with one end, far away from the first gear, of the second screw rod through a bearing, so that the second screw rod can rotate relative to the first fixing plate; the first drive assembly includes: the first driving motor is fixed on the auxiliary air outlet shell; and the second gear is connected with the output shaft of the first driving motor and is meshed with the first gear.

In one embodiment, the tower fan further comprises: the first guide structure is fixed in the second shell; the first transmission assembly is arranged in the auxiliary air outlet shell and is matched and connected with the first guide structure, and the first transmission assembly can move relative to the first guide structure to drive the auxiliary air outlet shell to move along the direction far away from or close to the base; the first driving assembly is arranged in the auxiliary air outlet shell and is positioned at one end, close to the second shell, of the auxiliary air outlet shell, and the first driving assembly is connected with the first transmission assembly so as to drive the first transmission assembly to move relative to the first guide structure; the second transmission assembly is connected with the first shell and is connected with the first guide structure in a matched manner, and the second transmission assembly can move relative to the first guide structure so as to drive the second shell to move relative to the first shell along the direction far away from or close to the base; and the second driving assembly is connected with the first shell and the second transmission assembly so as to drive the second transmission assembly to move relative to the first guide structure.

In one embodiment, the first guide structure comprises a first screw having a first external thread and a second internal thread; the first transmission assembly comprises a second screw rod, and the second screw rod is provided with a first internal thread; the second transmission assembly comprises a third screw having a second external thread; the second screw rod is sleeved on the first screw rod, and the first external thread is meshed with the first internal thread; the first screw rod is sleeved on the third screw rod, and the second external thread is meshed with the second internal thread.

In one embodiment, the main fan is an oblique flow fan, the tower fan further includes a wind guide plate, the wind guide plate abuts against one end, far away from the base, of the oblique flow fan, the wind guide plate is provided with a flow guide channel corresponding to an outlet of the oblique flow fan, and the second transmission assembly and the second driving assembly are arranged at one end, far away from the oblique flow fan, of the wind guide plate.

In one embodiment, an air inlet hole plate is installed on the first air inlet, and an air filtering assembly is arranged on one side, close to the main fan, of the air inlet hole plate.

In one embodiment, the auxiliary air blower is a centrifugal air blower, a second air inlet corresponding to an inlet of the centrifugal air blower is further arranged on the auxiliary air outlet casing, and the second air inlet and the second air outlet are respectively located on different sides of the auxiliary air outlet casing; and/or, supplementary air-out shell still includes first baffle and second baffle, first baffle encircles the setting of second air intake, and follow the second air intake is close to supplementary fan one side extends, the second baffle is connected first baffle is close to supplementary fan's one end, be provided with the fresh air inlet on the first baffle.

In one embodiment, the tower fan further comprises an oscillating mechanism comprising: the internal gear structure is arranged on the base; the outer gear is arranged at one end, close to the base, of the main air outlet shell, and gear teeth of the outer gear are meshed with gear teeth of the inner gear structure; and the third driving assembly is arranged in the main air outlet shell and is connected with the outer gear so as to drive the outer gear to rotate.

In view of the above, the above embodiments of the present invention can achieve one or more of the following advantages:

(1) but adopt main shell and the structure of supplementary shell relative movement that goes out, and all be provided with the fan on main shell and the supplementary shell that goes out of wind, supplementary fan can move along with supplementary shell that goes out of wind, can not only increase the amount of wind, can also increase the air-out face, and has the characteristics that can save storage space.

(2) The air inlet is provided with an air filtering component which is favorable for protecting the internal structure.

Other aspects and features of the present invention will become apparent from the following detailed description, which proceeds with reference to the accompanying drawings. It is to be understood, however, that the drawings are designed solely for purposes of illustration and not as a definition of the limits of the invention. It should be further understood that the drawings are not necessarily drawn to scale and that, unless otherwise indicated, they are merely intended to conceptually illustrate the structures and procedures described herein.

Drawings

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

Fig. 1 is a schematic view of an overall structure of a tower fan according to an embodiment of the present invention.

FIG. 2 is a schematic view of the tower fan shown in FIG. 1 from another perspective.

Fig. 3 is a disassembled view of a base of the tower fan shown in fig. 1.

Fig. 4 is an exploded view of the tower fan shown in fig. 1.

Fig. 5 is a schematic cross-sectional view of a tower fan according to an embodiment of the present invention.

Fig. 6 is a partially enlarged view of the area a in fig. 5.

[ instruction of reference ]

10: a base; 20: a main air outlet shell; 21: a first end; 22: a second end; 23: a side surface; 24: a first air inlet; 241: an air inlet hole plate; 242: an air filtration assembly; 25: a first air outlet; 26: a first housing; 27: a second housing; 30: a main fan; 40: an auxiliary air outlet shell; 41: a second air outlet; 42: a second air inlet; 4221: a first baffle plate; 422: a second baffle; 423: an air inlet hole; 50: an auxiliary fan; 61: a first guide structure; 611: a first screw; 62: a first transmission assembly; 621: a second screw; 622: a bearing; 623: a first fixing plate; 624: a first gear; 63: a first drive assembly; 631: a first drive motor; 632: a second gear; 64: a second transmission assembly; 641: a third screw; 65: a second drive assembly; 70: a wind guide plate; 71: a flow guide channel; 80: a head shaking mechanism; 81: an internal gear structure; 82: an outer gear; 83: a third drive assembly.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings.

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be noted that the division of the embodiments in the present invention is only for convenience of description and should not be construed as a limitation, and features in various embodiments may be combined and referred to each other without contradiction.

As shown in fig. 1 and 2, an embodiment of the present invention provides a tower fan, which includes a base 10 (shown in fig. 2), a main air outlet casing 20 and an auxiliary air outlet casing 40. The main air outlet casing 20 is connected to the base 10 and has a first end 21 close to the base 10 and a second end 22 far away from the base 10, and a side 23 located between the first end 21 and the second end 22, the side 23 is provided with a first air inlet 24 and a first air outlet 25, and an air duct communicating the first air inlet 24 and the first air outlet 25 is formed in the main air outlet casing 20. As shown in fig. 1, the main outlet casing 20 is generally cylindrical, the lower end of the cylindrical shape is a first end 21 connected to the base 10, the upper end of the cylindrical shape is a second end 22 far away from the base 10, and the periphery of the cylindrical shape is a side 23. The first air inlet 24 and the first air outlet 25 are disposed at different positions on the side 23. The auxiliary air outlet casing 40 is disposed at the second end 22 of the main air outlet casing 20 far away from the base 10, and is movable relative to the main air outlet casing 20 in a direction far away from or close to the base 10. The auxiliary air outlet casing 40 has a second air outlet 41, for example, referring to the orientation of fig. 1, the auxiliary air outlet casing 40 is sleeved in the main air outlet casing 20, the auxiliary air outlet casing 40 can extend up and down (or lift) relative to the main air outlet casing 20, and the first air outlet 25 and the second air outlet 41 are aligned.

Referring to fig. 4, the tower fan provided in this embodiment further includes a main fan 30 and an auxiliary fan 50, the main fan 30 is disposed in the air duct of the main air outlet casing 20, the auxiliary fan 50 is disposed in the auxiliary air outlet casing 40 corresponding to the second air outlet 41 and can move along with the movement of the auxiliary air outlet casing 40, that is, the outlet of the auxiliary fan 50 is aligned with the second air outlet 41, and the auxiliary fan 50 can move up and down relative to the main air outlet casing 20. The main blower 30 may be a diagonal flow blower or a centrifugal blower, and the auxiliary blower 50 may be a centrifugal blower. When the tower fan works, air can be driven by the main fan 30 to enter the air channel of the main air outlet casing 20 from the first air inlet 24, and when the auxiliary air outlet casing 40 is contracted in the main air outlet casing 20, the air blown out by the main fan 30 can firstly pass through the second air outlet 41 and then pass through the first air outlet 25 to be blown out. The auxiliary air outlet housing 40 extends out of the main air outlet housing 20, so that the air blown out from the main fan 30 can be respectively blown out from the first air outlet 25 and the second air outlet 41. At this time, the air blown out from the second outlet 41 is mainly provided by the auxiliary fan 50, so that the air output of the tower fan can be increased.

In one embodiment, for example, referring to fig. 4, the first intake vent 24 is provided with an intake aperture plate 241, for example, and an air filter assembly 242 is installed on a side of the intake aperture plate 241 close to the main fan 20 to filter the air entering from the first intake vent 24. The HEPA (High Efficiency Air Filter) can be specifically adopted, namely, an Air inlet hole plate 241 is arranged on the outer side of the HEPA for primary filtration, the internal structure of the tower fan can be protected through an Air filtration component 242, and Air flow sucked into the interior can be filtered and purified.

In one embodiment, for example, referring to fig. 2, the auxiliary air outlet casing 40 is further provided with, for example, a second air inlet 42 corresponding to an inlet of the auxiliary fan 50, and the second air inlet 42 and the second air outlet 41 are respectively located on different sides of the auxiliary air outlet casing 40. When the auxiliary blower 50 is started, the inlet air of the auxiliary blower 50 may be from the outlet of the main blower 30, or the inlet air may be provided through the second inlet 42 when the second inlet 42 is provided, so as to increase the inlet air volume and the blowing effect. Alternatively, referring to the partially enlarged schematic view in fig. 3, the second air inlet 42 includes, for example, a first baffle 421 and a second baffle 422, the first baffle 421 surrounds the second air inlet 42 and extends toward a side close to the auxiliary air blower 50, the second baffle 422 connects a side of the first baffle 421 close to the auxiliary air blower 50, that is, connects an inner side of the first baffle 421, an air inlet hole 423 is provided in the first baffle 421, and the air inlet hole 423 may be, for example, a plurality of air inlet holes shown in fig. 3. So, set up the fresh air inlet 423 at the side, can guarantee the air inlet, shelter from the sight through second baffle 422 again, have the peep-proof effect.

In this embodiment, two fans, namely, the main fan 30 and the auxiliary fan 50, which are respectively located in the main casing air outlet casing 20 and the auxiliary air outlet casing 40, are provided in the tower fan, and the auxiliary fan 50 can move up and down along with the lifting of the auxiliary air outlet casing 40. Therefore, when the tower fan is used, the auxiliary air outlet shell 40 extends out to increase the air outlet surface, the air volume can be increased through the auxiliary fan 50, and the air volume is more sufficient compared with the traditional tower fan in which only one fan is arranged at the bottom. And can retract the auxiliary air outlet shell 40 when the air outlet surface is not required to be increased, the main fan 30 and the auxiliary fan 50 work simultaneously, the air quantity can be increased, and the storage space can be saved. Therefore, the tower fan provided by the embodiment has the characteristics of large air volume, convenience in storage and flexibility in use.

Further, specifically, referring to fig. 4, the main outlet casing 20 specifically includes, for example, a first casing 26 and a second casing 27, the first casing 26 is connected to the base 10, and the second casing 27 is disposed at an end of the first casing 26 away from the base 10. The first air inlet 24 is disposed on the first casing 26, the first air outlet 25 is disposed on the second casing 27, the main fan 30 is disposed in the first casing 26 and located at an end of the first air inlet 24 away from the base 10, and the auxiliary air outlet housing 40 is sleeved in the second casing 27. The first housing 26 is, for example, sleeved in the second housing 27, and can move in a direction away from or close to the base 10 relative to the first housing 26. Thus, the auxiliary air outlet casing 40 can be retracted into the second casing 27, and the first casing 26 can also be partially retracted into the second casing 27, so that the occupied area of the tower fan is reduced when the tower fan is not used, and the storage space is saved.

More specifically, referring to fig. 4 and 5, the tower fan further includes a first guide structure 61, a first transmission assembly 62, and a first driving assembly 63 to achieve the elevation of the auxiliary outlet case 40. Specifically, the first guiding structure 61 is fixed in the main outlet casing 20, more specifically, in the second casing 27. The first transmission assembly 62 is disposed in the auxiliary air outlet casing 40 and is connected to the first guiding structure 61 in a matching manner, and the first transmission assembly 62 can move relative to the first guiding structure 61 to drive the auxiliary air outlet casing 40 to move in a direction away from or close to the base 10. The first driving assembly 63 is disposed in the auxiliary air outlet casing 40 and located at one end of the auxiliary air blower 50 close to the main air outlet casing 20. The first driving assembly 63 is connected to the first transmission assembly 62 to drive the first transmission assembly 62 to move relative to the first guide structure 61. Further, the extension and retraction of the first housing 26 relative to the second housing 27 may also include a second transmission assembly 64 and a second drive assembly 65, and the first guide structure 61 may be shared with the auxiliary outlet casing 40 or a second guide structure may be additionally provided. Taking the common first guiding structure 61 as an example, the second transmission assembly 64 is connected to the first housing 26 and is connected to the first guiding structure 61 in a matching manner, and the second transmission assembly 64 can move relative to the first guiding structure 61 to drive the second housing 27 to move relative to the first housing 26 in a direction away from or close to the base 10. The second driving assembly 65 is connected to the first housing 26 and the second transmission assembly 64 to drive the second transmission assembly 64 to move relative to the first guide structure 61. If the first guiding structure 61 is not shared, a second guiding structure is additionally disposed in the second housing 27, the second transmission assembly 64 is connected to the first housing 26 and is connected to the second guiding structure in a matching manner, and the second transmission assembly 64 can move relative to the second guiding structure to drive the second housing 27 to move relative to the first housing 26 along a direction away from or close to the base 10. The second drive assembly 65 is coupled to the first housing 26 and to the second transmission assembly 64 for driving the second transmission assembly 64 relative to the second guide structure. Wherein the second transmission assembly 64 may be directly connected to the first housing 26 or indirectly connected to the first housing 26 through other components on the first housing 26.

More specifically, referring to fig. 5, the first guide structure 61 includes, for example, a first screw 611, the first screw 611 having a first external thread, and the first transmission assembly 62 includes, for example, a second screw 621, the second screw 621 having a first internal thread. The second screw 621 is sleeved outside the first screw 611, and the first external thread is engaged with the first internal thread. When the second screw 621 rotates with respect to the first screw 611, the up and down movement of the auxiliary wind discharging case 40 with respect to the second housing 27 can be achieved. Specifically, referring to fig. 6, the first guiding structure 61 further includes, for example, a fixing plate connected to the second housing 27 for fixing the first screw 611. The first transmission assembly 62 further includes a first fixing plate 623 for fixing the second screw 621, the first fixing plate 623 is fixed on the auxiliary air outlet casing 40, specifically, the first fixing plate 623 is connected to the second screw 621 through a bearing 622, the bearing 622 is sleeved on the outside of the second screw 621 and is fixed on the first fixing plate 623, so that the second screw 621 and the first fixing plate 623 can be rotatably connected, and the auxiliary air outlet casing 40 can be driven by the first fixing plate 623 to move up and down when the second screw 621 rotates. The first transmission assembly 62 further includes, for example, a first gear 624 fixed outside the second screw 621, specifically, the first gear 624 is disposed at an end of the second screw 621 away from the bearing 622, the first driving assembly 63 includes, for example, a first driving motor 631 and a second gear 632 connected to an output shaft of the first driving motor 631, the first driving motor 631 is fixed on the auxiliary air outlet casing 40, and the second gear 632 is engaged with the first gear 624 to drive the second screw 621 to rotate through the first driving motor 631.

Furthermore, for example, when the first guiding structure 61 is shared, the first screw 611 has, for example, a second internal thread. The second transmission assembly 64 includes a third screw 641, the third screw 641 has a second external thread, the first screw 611 is disposed outside the third screw 641, and the second external thread is engaged with the second internal thread. When the first screw 611 and the third screw 641 rotate relatively, the second housing 27 can move up and down relative to the first housing 26. The first housing 26 is provided with, for example, a structure for mounting the second transmission assembly 64 and the second drive assembly 65. In one embodiment, the main blower 30 is, for example, an oblique flow blower, the tower fan is further provided with an air guiding disc 70, the air guiding disc 70 abuts against one end of the oblique flow blower away from the base 10, that is, abuts against one side of an outlet of the oblique flow blower, the air guiding disc 70 is further provided with an air guiding channel 71 corresponding to the outlet of the oblique flow blower, specifically, for example, a plurality of grid plates are further arranged in the air guiding channel 71 to evenly distribute the outlet air of the main blower 30, and on the other hand, the second transmission assembly 64 and the second driving assembly 65 may be arranged on the air guiding disc 70. For example, referring to fig. 5, the second transmission assembly 64 further includes a third gear connected to an end of the third screw 641, and the second driving assembly 65 includes a second driving motor and a fourth gear connected to an output shaft of the second driving motor, wherein the third gear and the fourth gear are engaged with each other and both rotatably connected to the wind guiding plate 70, such that the third screw 641 can be driven to rotate relative to the first screw 611 by the second driving motor. Of course, the above is only an example of the function of implementing the lifting and contracting of the auxiliary wind outlet case 40 and the first casing 26 (or the second casing 27), and the embodiment is not limited thereto.

In one embodiment, the tower fan further comprises an oscillating mechanism 80, and referring to fig. 3, the oscillating mechanism 80 comprises an internal gear structure 81 disposed on the base 10, an external gear 82 disposed on the main outlet casing 20 near one end of the base 10, and a third driving assembly 83. The third driving assembly 83 is disposed inside the main outlet casing 20 and is connected to the external gear 82 to drive the external gear 82 to rotate, and the gear teeth of the external gear 82 are engaged with the gear teeth of the internal gear structure 81, so that the external gear 82 can rotate inside the internal gear structure 81, thereby realizing a shaking function, wherein the gear teeth of the internal gear structure 81, for example, can be arranged only on a partial circumference.

The working and operating principles of the wearable fan provided by some embodiments of the present invention are briefly described below.

A normal blowing mode: the auxiliary air outlet housing 40 is contracted in the main air outlet housing 20, the main blower 30 is started, and air is sucked from the first air inlet 24 through the main blower 30 and blown out from the first air outlet 25 through the second air outlet 41.

The large air volume mode comprises the following steps: the auxiliary air outlet shell 40 is contracted in the main air outlet shell 20, the main fan 30 and the auxiliary fan 50 are started, the two fans work simultaneously, air enters from the first air inlet 24 and is blown out from the first air outlet 25 after passing through the second air outlet 41, and the air quantity is increased.

A rising mode: supplementary air-out shell 40 stretches out main air-out shell 20, starts main fan 30 and auxiliary fan 50, and two fans simultaneous working, the air-out of first air outlet 25 is provided by main fan 30, and the air-out of second air outlet 41 is provided by auxiliary fan 50, and the face is bloied in the increase and the angle of blowing, guarantees big air output simultaneously.

Storage mode: the auxiliary air outlet shell 40 is contained in the second shell 27, the first shell 26 is partially contained in the second shell 27, the power is cut off, the whole height of the tower fan is lowered, and the tower fan is convenient to contain.

The utility model discloses above-mentioned embodiment has following beneficial effect: but adopt main shell and the structure of supplementary shell relative movement that goes out, and all be provided with the fan on main shell and the supplementary shell that goes out of wind, supplementary fan can move along with supplementary shell that goes out of wind, can not only increase the amount of wind, can also increase the air-out face, and has the characteristics that can save storage space.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent changes without departing from the technical scope of the present invention.

Claims

1. A tower fan, comprising:

a base (10);

the main air outlet shell (20) is connected with the base (10), the main air outlet shell (20) is provided with a first end (21) close to the base (10), a second end (22) far away from the base (10) and a side surface (23) located between the first end (21) and the second end (22), a first air inlet (24) and a first air outlet (25) are arranged on the side surface (23), and an air channel communicated with the first air inlet (24) and the first air outlet (25) is formed in the main air outlet shell (20);

the main fan (30) is arranged in the air duct;

an auxiliary air outlet shell (40) which is arranged at the second end (22) of the main air outlet shell (20) far away from the base (10), and the auxiliary air outlet shell (40) can move relative to the main air outlet shell (20) along the direction far away from or close to the base (10); the auxiliary air outlet shell (40) is provided with a second air outlet (41);

and the auxiliary fan (50) is arranged in the auxiliary air outlet shell (40) corresponding to the second air outlet (41) and can move along with the movement of the auxiliary air outlet shell (40).

2. The tower fan of claim 1, wherein the main outlet casing (20) comprises:

the first shell (26) is connected with the base (10), the first air inlet (24) is formed in one end, close to the base (10), of the first shell (26), and the main fan (30) is arranged in the first shell (26) and located at one end, far away from the base (10), of the first air inlet (24);

a second shell (27) arranged at one end of the first shell (26) far away from the base (10), wherein the first air outlet (25) is arranged on the second shell (27); the auxiliary air outlet shell (40) is sleeved in the second shell (27);

the first shell (26) is sleeved in the second shell (27), and the second shell (27) can move relative to the first shell (26) along a direction far away from or close to the base (10).

3. The tower fan of claim 1, further comprising:

a first guide structure (61) fixed inside the main air outlet casing (20);

the first transmission assembly (62) is arranged in the auxiliary air outlet shell (40) and is matched and connected with the first guide structure (61), and the first transmission assembly (62) can move relative to the first guide structure (61) to drive the auxiliary air outlet shell (40) to move along the direction far away from or close to the base (10);

the first driving assembly (63) is arranged in the auxiliary air outlet shell (40) and located at one end, close to the main air outlet shell (20), of the auxiliary air outlet shell (40), and the first driving assembly (63) is connected with the first transmission assembly (62) to drive the first transmission assembly (62) to move relative to the first guide structure (61).

4. The tower fan of claim 3, wherein the first guide structure (61) comprises a first screw (611), the first screw (611) having a first external thread;

the first transmission assembly (62) comprises:

a second screw (621), the second screw (621) having a first internal thread; the second screw rod (621) is sleeved on the first screw rod (611) and the first external thread is meshed with the first internal thread;

the first gear (624) is fixedly connected with the second screw (621);

the first fixing plate (623) is fixed on the auxiliary air outlet shell (40), and the first fixing plate (623) is connected with one end, away from the first gear (624), of the second screw rod (621) through a bearing (622), so that the second screw rod (621) can rotate relative to the first fixing plate (623);

the first drive assembly (63) comprises:

a first driving motor (631) fixed to the auxiliary outlet case (40);

and a second gear (632) connected to an output shaft of the first drive motor (631) and engaged with the first gear (624).

5. The tower fan of claim 2, further comprising:

a first guide structure (61) fixed within the second housing (27);

the first driving assembly (63) is arranged in the auxiliary air outlet shell (40) and is positioned at one end, close to the second shell (27), of the auxiliary air outlet shell (40), and the first driving assembly (63) is connected with the first transmission assembly (62) so as to drive the first transmission assembly (62) to move relative to the first guide structure (61);

the second transmission assembly (64) is connected with the first shell (26) and is matched and connected with the first guide structure (61), and the second transmission assembly (64) can move relative to the first guide structure (61) so as to drive the second shell (27) to move relative to the first shell (26) along the direction far away from or close to the base (10);

a second drive assembly (65) coupled to the first housing (26) and coupled to the second transmission assembly (64) for driving the second transmission assembly (64) relative to the first guide structure (61).

6. The tower fan of claim 5, wherein the first guide structure (61) comprises a first screw (611), the first screw (611) having a first external thread and a second internal thread; the first transmission assembly (62) comprises a second screw (621), the second screw (621) having a first internal thread; the second transmission assembly (64) comprises a third screw (641), the third screw (641) having a second external threading;

the second screw rod (621) is sleeved on the first screw rod (611) and the first external thread is meshed with the first internal thread; the first screw (611) is sleeved on the third screw (641) and the second external thread is meshed with the second internal thread.

7. The tower fan according to claim 5, wherein the main fan (30) is an oblique flow fan, the tower fan further comprises a wind guide plate (70), the wind guide plate (70) abuts against one end of the oblique flow fan, which is far away from the base (10), the wind guide plate (70) is provided with a wind guide channel (71) corresponding to an outlet of the oblique flow fan, and the second transmission assembly (64) and the second driving assembly (65) are arranged at one end of the wind guide plate (70), which is far away from the oblique flow fan.

8. The tower fan according to claim 1, wherein an air inlet hole plate (241) is installed on the first air inlet (24), and an air filtering assembly (242) is disposed on one side of the air inlet hole plate (241) close to the main fan (30).

9. The tower fan according to claim 1, wherein the auxiliary blower (50) is a centrifugal blower, and the auxiliary air outlet casing (40) is further provided with a second air inlet (42) corresponding to an inlet of the centrifugal blower; the second air inlet (42) and the second air outlet (41) are respectively positioned on different sides of the auxiliary air outlet shell (40); and/or the presence of a gas in the atmosphere,

the auxiliary air outlet shell (40) further comprises a first baffle (421) and a second baffle (422), the first baffle (421) surrounds the second air inlet (42) and extends from the second air inlet (42) towards one side of the auxiliary fan (50), the second baffle (422) is connected with one end, close to the auxiliary fan (50), of the first baffle (421), and an air inlet hole (423) is formed in the first baffle (421).

10. A tower fan according to any one of claims 1-9, further comprising a head shaking mechanism (80), the head shaking mechanism (80) comprising:

an internal gear structure (81) provided on the base (10);

the outer gear (82) is arranged at one end, close to the base (10), of the main air outlet shell (20), and gear teeth of the outer gear (82) are meshed with gear teeth of the inner gear structure (81);

and the third driving assembly (83) is arranged in the main air outlet shell (20) and is connected with the external gear (82) to drive the external gear (82) to rotate.