CN219012910U

CN219012910U - Bladeless fan

Info

Publication number: CN219012910U
Application number: CN202220959833.0U
Authority: CN
Inventors: 尤云海; 李燕辉
Original assignee: Shenzhen Ruiwu Digital Technology Co ltd
Current assignee: Shenzhen Ruiwu Digital Technology Co ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2023-05-12
Anticipated expiration: 2032-04-22

Abstract

The bladeless fan disclosed by the embodiment of the utility model comprises a main air outlet shell, an air duct and a first fan shell, wherein the air duct is arranged in the main air outlet shell and forms a first air duct with the main air outlet shell; the air duct comprises a first side wall and a second side wall which are oppositely arranged, an air outlet air duct penetrating through the main air outlet shell is formed between the first side wall and the second side wall, an inclined first air guide surface and an inclined second air guide surface are arranged on the first side wall, a first air outlet is formed, an inclined third air guide surface and an inclined fourth air guide surface are arranged on the second side wall, a second air outlet is formed, a first fan arranged in the first air outlet shell is used as a power source, and air blown out from the first air outlet and the second air outlet can be firstly intersected and converged in the air supply air duct and then blown out, so that the bladeless fan has the characteristics of simple structure and good air outlet effect.

Description

Bladeless fan

Technical Field

The utility model relates to the technical field of household appliances, in particular to a bladeless fan.

Background

The fan is widely applied to daily life as a common cooling appliance, and the bladeless fan is a novel fan which is popular in recent years, compared with the traditional fan, the bladeless fan adopts an air multiplication technology, but the existing bladeless fan wind-out structure form enables the wind outlet multiplication ratio to be lower, and how to increase the multiplication ratio becomes a main technical problem in the market. Most fans in the market at present are front-mounted air outlet, and the multiplication is small. The air outlet duct of the existing bladeless fan is generally formed by surrounding an inner cylinder and an outer cylinder, an air supply duct communicated with an outlet of the fan is arranged between the outer cylinder and the inner cylinder, and an air outlet duct penetrating front and back is formed in the middle of the inner cylinder. There are some techniques for providing a rear-mounted air outlet structure, in which two opposite air outlets are formed at the upper rear ends of the upper and lower side walls of the inner cylinder, and the direction of the air outlet of the upper side wall is parallel to the upper side wall, so that the air flow sent out by the air supply duct can fan out along the upper side wall, and the direction of the air outlet of the lower side wall is parallel to the lower side wall, so that the air supply duct can fan out along the lower side wall. However, the air outlet structure only enables the air blown out by the air outlet to be blown out along the side wall where the air outlet is located, no airflow flows at the central position of the air outlet air duct, the air outlet range of the air blown forward is limited, and the multiplication effect is still poor.

Therefore, how to provide a bladeless fan with high multiplication ratio and simple structure is a problem to be solved.

Disclosure of Invention

Therefore, in order to overcome at least part of the defects and shortcomings in the prior art, the embodiment of the utility model provides the bladeless fan which has the characteristics of simple structure and good air outlet effect.

Specifically, an embodiment of the present utility model provides a bladeless fan including: the main air outlet shell is provided with a first side face and a second side face which are opposite; the air duct is arranged in the main air outlet shell, and a first air duct is formed by a gap between the air duct and the main air outlet shell; the air duct comprises a first side wall and a second side wall which are arranged oppositely; the first side wall and the second side wall are respectively connected between the first side surface and the second side surface, and an air outlet duct penetrating through the main air outlet shell along the direction from the first side surface to the second side surface is formed between the first side wall and the second side wall; a first air guide surface and a second air guide surface which are oppositely arranged are formed at one end of the first side wall, which is close to the second side surface, and the first air guide surface and the second air guide surface are respectively inclined along the direction from one end of the first side wall, which is close to the second side surface, to one end of the second side wall, which is close to the first side surface, and a first air outlet is formed between the first air guide surface and the second air guide surface; a third air guide surface and a fourth air guide surface which are oppositely arranged are formed at one end, close to the second side surface, of the second side wall, the third air guide surface and the fourth air guide surface are respectively inclined along the direction from one end, close to the second side surface, of the second side wall to one end, close to the first side surface, of the first side wall, and a second air outlet is formed between the third air guide surface and the fourth air guide surface; the air outlet air duct is communicated with the first air duct through the first air outlet and the second air outlet respectively; the first fan shell is connected with the main air outlet shell and comprises a first air inlet and a second air duct; a first fan is arranged in the second air duct.

In one embodiment, the first side wall comprises a first side plate and a first baffle plate which are arranged at intervals, the second side wall comprises a second side plate and a second baffle plate which are arranged at intervals, the first side plate and the second side plate are respectively connected to the first side surface and are oppositely arranged, the first baffle plate and the second baffle plate are positioned between the first side plate and the second side plate and are respectively connected with the second side surface, the first air guide surface is positioned at one end of the first side plate far away from the first side surface, the second air guide surface is positioned at one end of the first baffle plate far away from the second side surface, a first air guide section is further formed between the first side plate and the first baffle plate, and the first air outlet is communicated with the first air duct through the first air guide section; the third air guide surface is located at one end of the second side plate far away from the first side surface, the fourth air guide surface is located at one end of the second baffle plate far away from the second side surface, a second air guide section is further formed between the second side plate and the second baffle plate, and the second air outlet is communicated with the first air duct through the second air guide section.

In one embodiment, the spacing between the first side plate and the second side plate decreases gradually in a direction from the first side surface to the second side surface.

In one embodiment, the air duct further comprises a third side wall adjacent to the first side plate and the second side plate respectively, and a fourth side wall opposite to the third side wall, wherein opposite ends of the first baffle are connected with the third side wall and the fourth side wall respectively, and opposite ends of the second baffle are connected with the third side wall and the fourth side wall respectively.

In one embodiment, the spacing between the third and fourth sidewalls decreases progressively in a direction from the first side to the second side.

In one embodiment, the bladeless fan further includes a sound attenuating structure disposed within the first fan housing and between the first fan and the main outlet housing.

In one embodiment, the first fan housing further comprises a first partition board, the first partition board separates the first fan housing to form a fan accommodating cavity and a silencing cavity adjacent to the fan accommodating cavity, the first air inlet and the first air duct are respectively communicated with the fan accommodating cavity, the first fan is arranged in the fan accommodating cavity, the silencing structure is formed in the silencing cavity, and a plurality of sound inlet holes are formed in the first partition board and located between the fan accommodating cavity and the silencing cavity and adjacent to the main air outlet housing.

In one embodiment, the silencing cavity is filled with silencing cotton.

In one embodiment, the first fan shell comprises a second partition board, the second partition board separates the interior of the first fan shell to form an adjacent fan accommodating cavity and an air inlet cavity, and the first fan is arranged in the fan accommodating cavity; the second partition plate is provided with a flow collecting hole, the air inlet cavity is communicated with the fan accommodating cavity through the flow collecting hole, the first air inlet is arranged on one side, away from the second partition plate, of the air inlet cavity, and the first air inlet and the first air channel are respectively communicated with the fan accommodating cavity.

In one embodiment, the second partition is provided with a header corresponding to the header hole, and the caliber of the header gradually increases in a direction from the second partition toward a side away from the first fan.

As can be seen from the above, the above embodiments of the present utility model can achieve one or more of the following advantages: the first air outlet is formed through the inclined first air guide surface and the inclined second air guide surface, and the second air outlet is formed through the inclined third air guide surface and the inclined fourth air guide surface, so that wind energy blown out from the first air outlet and the second air outlet can be obliquely and alternately converged at first, and then blown out from one end, adjacent to the first side, of the air outlet channel respectively, the air outlet range is wider, air flow outside the bladeless fan can be driven to flow in from one end, adjacent to the second side, of the air outlet channel, then the air flow is blown out from one end, adjacent to the first side, of the air outlet channel after passing through the air outlet channel, and particularly, the air flow, located in the central position between the first side wall and the second side wall, of the air outlet channel can be driven to flow from one end to the other end of the air outlet channel.

Other aspects and features of the present utility model will become apparent from the following detailed description, which refers to the accompanying drawings. It is to be understood, however, that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the utility model. 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 specific embodiments of the utility model refers to the accompanying drawings.

Fig. 1 is a schematic structural view of a bladeless fan according to an embodiment of the present utility model

Fig. 2 is a section A-A of fig. 1.

Fig. 3 is an exploded view of a first fan case of a bladeless fan according to an embodiment of the present utility model.

Fig. 4 is a schematic cross-sectional view of a first fan housing of a bladeless fan according to an embodiment of the present utility model.

Fig. 5 is an exploded view of a bladeless fan according to an embodiment of the present utility model.

Fig. 6 is another schematic cross-sectional view of a bladeless fan according to an embodiment of the present utility model.

[ reference numerals description ]

10: a main air outlet; 11: a first side; 12: a second side; 13: a first air inlet end; 14: a first air duct; 141: an air duct baffle; 142: a first sub-duct; 143: a second sub-duct; 15: a second air inlet end;

20: an air duct; 21: a first sidewall; 22: a second sidewall; 211: a first air guiding surface; 212: the second air guide surface; 213: a first side plate; 214: a first baffle; 215: first wind-guiding section 23: a second sidewall; 221: a third air guiding surface; 222: a fourth air guiding surface; 223: a second side plate; 224: a second baffle; 225: the second air guide section; 23: a third sidewall; 26: a first air outlet; 27; a second air outlet; 28: a fourth sidewall;

30: a first fan housing; 31: a first air inlet; 311: side air inlet; 312: an end air inlet; 33: a first fan; 34: a first separator; 35: a fan accommodating cavity; 36: an air inlet cavity; 37: a second separator; 361: a collecting hole; 362: collecting pipes; 38: a third side; 39; a fourth side; 40: a sound attenuation assembly; 41: a sound deadening chamber; 42: a sound inlet hole; 43: silencing material: 431: silencing cotton; 44: a mounting column;

50: a second fan housing; 51: a second air inlet; 53: and a second fan.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings.

In order that those skilled in the art will better understand the technical solutions of the present utility model, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects 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 utility model described herein are 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 further noted that the division of the embodiments in the present utility model is only for convenience of description, and should not be construed as a specific limitation, and features in the various embodiments may be combined and mutually referenced without contradiction.

Fig. 1 is a schematic view of the overall structure of a bladeless fan according to an embodiment of the present utility model, and fig. 2 is a schematic view of a section A-A of fig. 1. One embodiment of the present utility model provides a bladeless fan comprising a main air outlet housing 10, an air duct 20, and a first fan housing 30.

Wherein the main air outlet casing 10 has opposite first and

second sides

11 and 12, and first air inlet ends 13 adjacent to the first and

second sides

11 and 12, respectively. The air duct 20 is arranged in the main air outlet shell 10, and a gap between the air duct 20 and the main air outlet shell 10 forms a first air duct 14, and the first air duct 14 is communicated with the first air inlet end 13.

The air duct 20 comprises a first side wall 21, a second side wall 22, a third side wall 23 and a fourth side wall 28 connected between the first side surface 11 and the second side surface 12, wherein the third side wall 23 is arranged near the first air inlet end 13, and the first side wall 21 is opposite to the second side wall 23 and is adjacent to the third side wall 23 respectively. The fourth side wall 28 is disposed opposite the third side wall 23. The first side wall 21 and the second side wall 23 are respectively connected between the first side surface 11 and the second side surface 12, and an air outlet duct penetrating through the main air outlet 10 along the direction from the first side surface 11 to the second side surface 12 is formed between the first side wall 21 and the second side wall 23. A first air guiding surface 211 and a second air guiding surface 212 which are oppositely arranged are formed at one end of the first side wall 21, which is close to the second side surface 12, and the first air guiding surface 211 and the second air guiding surface 212 are respectively inclined along the direction from one end of the first side wall 21, which is close to the second side surface 12, to one end of the second side wall 23, which is close to the first side surface 11, and a first air outlet 26 is formed between the first air guiding surface 211 and the second air guiding surface 212; a third air guiding surface 221 and a fourth air guiding surface 222 which are oppositely arranged are formed at one end of the second side wall 23 close to the second side surface 12, the third air guiding surface 221 and the fourth air guiding surface 222 incline along the direction from one end of the second side wall 23 close to the second side surface 12 to one end of the first side wall 21 close to the first side surface 11, and a second air outlet 27 is formed between the third air guiding surface 221 and the fourth air guiding surface 222; the air outlet duct is communicated with the first air duct 14 through a first air outlet 26 and a second air outlet 27 respectively.

Specifically, in one embodiment, the first side wall 21 includes a first side plate 213 and a first baffle 214 that are disposed at intervals, the second side wall 23 includes a second side plate 223 and a second baffle 224 that are disposed at intervals, the first side plate 213 and the second side plate 223 are respectively connected to the first side surface 11 and are disposed opposite to each other, the first baffle 214 and the second baffle 224 are located between the first side plate 213 and the second side plate 223 and are respectively connected to the second side surface 12, the first air guiding surface 211 is located at an end of the first side plate 213 away from the first side surface 11, the second air guiding surface 212 is located at an end of the first baffle 214 away from the second side surface 12, a first air guiding section 215 is further formed between the first side plate 213 and the first baffle 214, and the first air outlet 26 is in communication with the first air duct 14 through the first air guiding section 215; the third air guiding surface 221 is located at one end of the second side plate 223 away from the first side surface 11, the fourth air guiding surface 222 is located at one end of the second baffle 224 away from the second side surface 12, a second air guiding section 225 is further formed between the second side plate 223 and the second baffle 224, and the second air outlet 27 is communicated with the first air duct 14 through the second air guiding section 225. The spacing between the first side wall 21 and the second side wall 23 decreases in the direction of the first side face 11 to the second side face 12, more specifically, for example, the spacing between the first side plate 213 and the second side plate 223 decreases in the direction of the first side face 11 to the second side face 12, and the first baffle 214 and the second baffle 224 are parallel to each other. The first air outlet 26 and the second air outlet 27 may be continuous slits or discontinuous slits, and the present embodiment is not limited thereto.

The first fan housing 30 is connected to the main air outlet housing 10, specifically connected to the first air inlet end 13, and includes a first air inlet 31, a second air channel is formed between the first air inlet 31 and the first air inlet end 13, and a first fan 33 is disposed in the second air channel. Or the first blower housing 30 may also be provided as a unitary structure with the main housing 10, for example, with the first blower 33 disposed adjacent to the third sidewall 23 (or the fourth sidewall 28).

Referring to fig. 1, the main air outlet casing 10 is, for example, cylindrical (the embodiment is not limited thereto), and an annular channel, i.e., the first air duct 14, is formed between the air duct 20 and the main air outlet casing 10. According to the overall block diagram of fig. 1, the front side is the first side 11, the back side is the second side 12, the left side is the first air inlet end 13, the third side wall 23 is the left side wall of the air duct 20, the first side wall 21 is the lower side wall of the air duct 20, the second side wall 23 is the upper side wall of the air duct 20, and for example, the fourth side wall 28 is the right side wall of the air duct 20. Referring to section A-A in fig. 2, the first side 11 is the left side in fig. 2 and the second side 12 is the right side in fig. 2. The first side wall 21 is the side wall below the air duct 20, and the second side wall 23 is the side wall above the air duct 20.

The first side wall 21 comprises a first side plate 213 and a first baffle 214 which are arranged at intervals, the first side plate 213 is connected with the first side surface 11 and extends towards the right, the first baffle 214 is connected with the second side surface 12 and extends towards the left, the rightmost side of the first side plate 213 forms an inclined first air guiding surface 211, the leftmost side of the first baffle 214 forms a corresponding second air guiding surface 212, and the first air guiding surface 211 and the second air guiding surface 212 incline along the direction from the lower right to the upper left, so that the air blown by the first air outlet 26 is directed towards the upper right corner.

The second side wall 23 includes a second side plate 223 and a second baffle 224 that are disposed at intervals, the second side plate 223 is connected to the first side surface 11 and extends to the right, the second baffle 224 is connected to the second side surface 12 and extends to the left, the rightmost side of the second side plate 223 forms an inclined third air guiding surface 221, the leftmost side of the second baffle 224 forms a corresponding fourth air guiding surface 222, and the third air guiding surface 221 and the fourth air guiding surface 222 incline along the direction from the upper right to the lower left, so that the air blown by the second air outlet 27 faces the lower left corner.

So the wind blown out by the first air outlet 26 and the second air outlet 27 is crossed and converged in the middle of the air outlet duct, so that the multiplication effect is better, and the air outlet is larger.

More specifically, referring to fig. 2, a first air guiding section 215 is formed between a downward surface of the first baffle 214 and a downward surface of the first side plate 213, so that the air in the first air duct 14 is turned and then blown out from the first air outlet 26. Similarly, a second air guiding section 225 is formed between the upward side of the second baffle 224 and the upward side of the second side plate 223, so that the air in the first air duct 14 can be turned and then blown out from the second air outlet 27.

Further, the opposite ends of the first baffle 214 along the third sidewall 23 to the fourth sidewall 28 are respectively connected to the third sidewall 23 and the fourth sidewall 28, and the opposite ends of the second baffle 224 along the third sidewall 23 to the fourth sidewall 28 are respectively connected to the third sidewall 23 and the fourth sidewall 28. Referring to fig. 1, the left and right ends of the first baffle 214 are respectively connected to the third sidewall 23 and the fourth sidewall 28, and the left and right ends of the first sidewall 224 are respectively connected to the third sidewall 23 and the fourth sidewall 28.

The space (D1 in fig. 2) between the first side wall 21 and the second side wall (the first side plate 213 and the second side plate 223) gradually decreases in the direction from the first side face 11 to the second side face 12. It can be seen from fig. 2 that the barrel 20 forms a channel that tapers from left to right (or tapers from right to left). When the bladeless fan provided in this embodiment works, the first fan 33 is operated, air is sucked from the first air inlet 31 by the first fan 33, blown to the first air inlet end 13 of the main air outlet casing 10 through the second air duct, and blown into the air duct 20 from the first air outlet 26 and the second air outlet 27 respectively through the first air duct 14 in the main air outlet casing 10. For the air duct 20, air can flow through the air duct 20, and is blown in from the second side 12 side and blown out from the first side 11 side, and is blown out from the right side of the air duct 20 and the left side according to the direction of fig. 2, and passes through the channel gradually expanding from right to left in the air duct 20, so that the air outlet angle is larger, the distance of the air outlet is longer, and the fan-out area is larger. Similarly, the distance between the third side wall 23 and the fourth side wall 28 gradually decreases along the direction from the first side surface 11 to the second side surface 12, so that the air outlet angle is larger.

Further, in one embodiment of the present utility model, the bladeless fan further includes a silencing structure 40, the silencing structure 40 being disposed adjacent to the first fan 33 and adjacent to the first air intake end 13 of the main air outlet housing 10. Specifically, for example, referring to the exploded structure of the first fan housing 30 in fig. 3, a first partition 34 is disposed in the first fan housing 30, the first partition 34 separates the first fan housing 30 into a fan accommodating chamber 35 and a silencing chamber 41 adjacent to the fan accommodating chamber 35, the first air inlet 31 and the first air inlet end 13 of the main air outlet housing 10 are respectively communicated with the fan accommodating chamber 35, and the first fan 33 is disposed in the fan accommodating chamber 35. The silencing structure 41 is formed in the silencing cavity 40, and a plurality of sound inlet holes 42 are formed in the first partition 34 between the fan accommodating cavity 35 and the silencing cavity 41 and adjacent to the first air inlet end 13 of the main air outlet casing 10. For example, as shown in fig. 2, the left side of the first partition 34 forms a fan accommodating chamber 35, the right front part forms a silencing chamber 41, and the right rear is that the air outlet of the fan communicates with the first air inlet end 13 (not shown in fig. 3). At a position of the first partition 34 adjacent to the first air inlet end 13 (not shown in fig. 3), a plurality of sound inlet holes 42 are formed, when the first fan 33 is started, air is sucked in by the first air inlet 31 and is sent into the first air inlet end 13 through the fan accommodating cavity 34, when the air passes by the sound inlet holes 42, some generated noise enters the sound attenuation cavity 41 from the sound inlet holes 42, for example, the sound attenuation cavity 41 is filled with a sound attenuation material 43, and the noise can be absorbed, so that the noise reduction effect is achieved. Specifically, the noise-deadening material 43 employs, for example, noise-deadening cotton 431, and a mounting column 44 for fixing the noise-deadening cotton 431 is also provided in the noise-deadening chamber 41, for example.

Still further, referring to fig. 4, in an embodiment of the present utility model, a second partition plate 36 is further disposed in the first fan housing 30, the second partition plate 36 separates the first fan housing 30 into a fan accommodating chamber 35 and an air inlet chamber 37, the first fan 33 is disposed in the fan accommodating chamber 35, the second partition plate 36 is provided with a collecting hole 361, and the collecting hole 361 is aligned with the first air inlet 31, for example. The air inlet cavity 37 and the fan accommodating cavity 35 are communicated through the flow collecting hole 361, the first air inlet 31 is arranged on one side, far away from the second partition plate 36, of the air inlet cavity 37, and the first air inlet 31 and the first air inlet end 13 of the main air outlet shell 10 are respectively communicated with the fan accommodating cavity 35. Specifically, as shown in fig. 4, a second partition plate 36 may be disposed on each of the upper and lower sides of the first fan 33, so that a three-layer cavity structure including a fan accommodating cavity 35 located in the middle and two air inlet cavities 37 located in the upper and lower sides of the second fan housing 30 is formed, and air can be introduced into both the upper and lower sides, so as to achieve a better air inlet effect. More specifically, the side of the second partition 36 away from the first fan 33 is further provided with a header 362 corresponding to the header 361, and the caliber of the header 362 gradually increases from the second partition 36 toward the side away from the first fan 33, i.e., the flare shape shown in fig. 4, so that a better collecting effect can be achieved. In some embodiments, the second partition 36 may be combined with the first partition 34, for example, as shown in fig. 4, the first partition 34 being disposed between the two second partitions 36, and dividing the cavity between the two second partitions 36 into the fan housing cavity 35 and the sound deadening cavity 41.

In one embodiment, the first fan housing 30 includes a third side 38 that is on the same side as the first side 11 and a fourth side 39 that is on the same side as the second side 12. The first air inlet 31 includes two side air inlets 311, and the two side air inlets 311 are disposed opposite to each other and disposed between the third side 38 and the fourth side 39. Further, the first air inlet 31 further comprises an end air inlet 312, for example, and the end air inlet 312 is located at a side of the first fan housing 30 away from the first air inlet end 13. Referring to fig. 1 and 4, according to the orientation shown in fig. 1, the first side 11 is the front surface of the main air outlet casing 10, the second side 12 is the back surface of the main air outlet casing 20, the third side 38 is the front surface of the first air outlet casing 30, and the fourth side 39 is the back surface of the first air outlet casing 30. Two side air inlets 311 are positioned on the top and bottom surfaces between the third side 38 and the fourth side 39 so as to be offset from the first side 11 and the second side 12, and the end air inlets 312 are positioned at the left end of the first fan housing 30, which is remote from the first air inlet end 13.

Still further, referring to fig. 5 and 6, in an embodiment, the bladeless fan further includes a second air inlet housing 50, a second air inlet end 15 is further disposed on the corresponding main air outlet housing 10, the second air inlet end 15 is located at a side of the air duct 20 away from the first air inlet end 13, the second air inlet housing 50 is connected to the second air inlet end 15, and includes a second air inlet 51, a third air duct is formed between the second air inlet 51 and the second air inlet end 15, and a second fan 53 is disposed in the third air duct. An air duct partition plate 141 is arranged in the first air duct 14 and is respectively connected with the air duct 20 and the main air outlet shell 10, the air duct partition plate 141 divides the first air duct 14 into a first sub-air duct 142 and a second sub-air duct 143, the first sub-air duct 142 is communicated with the first air inlet end 13, and the second sub-air duct is communicated with the second air inlet end 15.

Referring specifically to fig. 5, the left and right ends of the main air outlet casing 10 are a first air inlet end 13 and a second air inlet end 15, the first air inlet end 13 is connected with the left first air blower casing 30, the second air inlet end 15 is connected with the right second air blower casing 50, an air duct partition 141 is disposed in the middle of the first air duct 14, the air duct partition 141 is connected between the main air outlet casing 10 and the air duct 20, and the annular first air duct 14 is divided into a left first sub-air duct 142 and a right second sub-air duct 143, so that the air flows blown by the first air blower 33 and the second air blower 53 do not interfere with each other, and the dual-air-blower air outlet achieves the effect of larger wind. Referring to the cross-sectional view of fig. 6, the arrangement of the internal structure of the second fan housing 50 may be identical to the arrangement of the first fan housing 30, facilitating mass, modular production.

The embodiment of the utility model has the following beneficial effects: the first air outlet is formed through the inclined first air guide surface and the inclined second air guide surface, and the second air outlet is formed through the inclined third air guide surface and the inclined fourth air guide surface, so that wind energy blown out from the first air outlet and the second air outlet can be obliquely and alternately converged at first, and then blown out from one end, adjacent to the first side, of the air outlet air duct respectively, the air outlet range is wider, air flow outside the bladeless fan can be driven to flow in from one end, adjacent to the second side, of the air outlet air duct, then the air flow is blown out from one end, adjacent to the first side, of the air outlet air duct after passing through the air outlet air duct, and particularly, the air flow at the central position, located between the first side wall and the second side wall, of the air outlet air duct can be driven to flow from one end to the other end of the air outlet air duct, and compared with the prior art, the air outlet is blown out from the side, the efficiency is better, and the wind power is stronger.

The present utility model is not limited to the above-mentioned embodiments, but is intended to be limited to the following embodiments, and any modifications, equivalent changes and variations in the above-mentioned embodiments can be made by those skilled in the art without departing from the scope of the present utility model.

Claims

1. A bladeless fan, comprising:

a main air outlet shell (10) which is provided with a first side surface (11) and a second side surface (12) which are opposite;

the air duct (20) is arranged in the main air outlet shell (10), and a first air duct (14) is formed by a gap between the air duct (20) and the main air outlet shell (10); the air duct (20) comprises a first side wall (21) and a second side wall (22) which are oppositely arranged; the first side wall (21) and the second side wall (22) are respectively connected between the first side surface (11) and the second side surface (12), and an air outlet duct penetrating through the main air outlet shell (10) along the direction from the first side surface (11) to the second side surface (12) is formed between the first side wall (21) and the second side wall (22); a first air guide surface (211) and a second air guide surface (212) which are oppositely arranged are formed at one end, close to the second side surface (12), of the first side wall (21), the first air guide surface (211) and the second air guide surface (212) are respectively inclined along the direction from one end, close to the second side surface (12), of the first side wall (21) to one end, close to the first side surface (11), of the second side wall (22), and a first air outlet (26) is formed between the first air guide surface (211) and the second air guide surface (212); a third air guide surface (221) and a fourth air guide surface (222) which are oppositely arranged are formed at one end, close to the second side surface (12), of the second side wall (22), the third air guide surface (221) and the fourth air guide surface (222) are respectively inclined along the direction from one end, close to the second side surface (12), of the second side wall (22) to one end, close to the first side surface (11), of the first side wall (21), and a second air outlet (27) is formed between the third air guide surface (221) and the fourth air guide surface (222); the air outlet air duct is communicated with the first air duct (14) through the first air outlet (26) and the second air outlet (27) respectively;

the first air blower housing (30) is connected with the main air outlet housing (10) and comprises a first air inlet (31) and a second air duct, and the second air duct is communicated with the first air duct (14); a first fan (33) is arranged in the second air duct.

2. The bladeless fan according to claim 1, wherein the first side wall (21) includes a first side plate (213) and a first baffle (214) that are disposed at intervals, the second side wall (22) includes a second side plate (223) and a second baffle (224) that are disposed at intervals, the first side plate (213) and the second side plate (223) are respectively connected to the first side surface (11) and disposed opposite to each other, the first baffle (214) and the second baffle (224) are disposed between the first side plate (213) and the second side plate (223) and respectively connected to the second side surface (12), the first air guiding surface (211) is disposed at an end of the first side plate (213) that is away from the first side surface (11), the second air guiding surface (212) is disposed at an end of the first baffle (214) that is away from the second side surface (12), the first air guiding section (215) is further formed between the first side plate (213) and the first baffle (214), and the first air guiding section (26) is connected to the first air duct (14); the third air guide surface (221) is located at one end of the second side plate (223) far away from the first side surface (11), the fourth air guide surface (222) is located at one end of the second baffle (224) far away from the second side surface (12), a second air guide section (225) is further formed between the second side plate (223) and the second baffle (224), and the second air outlet (27) is communicated with the first air duct (14) through the second air guide section (225).

3. The bladeless fan according to claim 2, characterized in that the spacing between the first side plate (213) and the second side plate (223) decreases gradually in the direction from the first side surface (11) to the second side surface (12).

4. The bladeless fan according to claim 2, wherein the duct (20) further comprises a third side wall (23) adjacent to the first side wall (213) and the second side wall (223), respectively, and a fourth side wall (28) opposite to the third side wall (23), wherein opposite ends of the first baffle (214) are connected to the third side wall (23) and the fourth side wall (28), respectively, and opposite ends of the second baffle (224) are connected to the third side wall (23) and the fourth side wall (28), respectively.

5. The bladeless fan according to claim 4, characterized in that the spacing between the third side wall (23) and the fourth side wall (28) decreases gradually in the direction from the first side (11) to the second side (12).

6. The bladeless fan according to claim 1, further comprising a silencing structure (40), the silencing structure (40) being arranged inside the first fan housing (30) and between the first fan (33) and the main outlet housing (10).

7. The bladeless fan according to claim 6, wherein the first fan housing (30) further includes a first partition plate (34), the first partition plate (34) separates the first fan housing (30) into a fan accommodating cavity (35) and a silencing cavity (41) adjacent to the fan accommodating cavity (35), the first air inlet (31) and the first air duct (14) are respectively communicated with the fan accommodating cavity (35), the first fan (33) is disposed in the fan accommodating cavity (35), the silencing structure (40) is formed in the silencing cavity (41), and a plurality of sound inlets (42) are disposed on the first partition plate (34) between the fan accommodating cavity (35) and the silencing cavity (41) and adjacent to the main air outlet housing (10).

8. The bladeless fan according to claim 7, characterized in that the silencing chamber (41) is filled with silencing cotton (431).

9. The bladeless fan according to claim 1, wherein the first fan housing (30) includes a second partition (36), the second partition (36) dividing the first fan housing (30) into adjacent fan receiving cavities (35) and air intake cavities (37), the first fan (33) being disposed within the fan receiving cavities (35); the air inlet cavity (37) is communicated with the fan accommodating cavity (35) through the collecting hole (361), the first air inlet (31) is arranged on one side, away from the second partition plate (36), of the air inlet cavity (37), and the first air inlet (31) and the first air duct (14) are respectively communicated with the fan accommodating cavity (35).

10. The bladeless fan according to claim 9, wherein the second partition (36) is provided with a header (362) corresponding to the header hole (361), and the caliber of the header (362) gradually increases in a direction from the second partition (36) toward a side away from the first fan (33).