阅读说明：本技术 出风装置、风扇及风扇的控制方法 (Air outlet device, fan and control method of fan ) 是由 陈明明 何志超 陈成 顾然升 王领 于 2020-12-25 设计创作，主要内容包括：本发明提供了一种出风装置、风扇及风扇的控制方法。出风装置包括：风道壳,具有进风口、与进风口连通的出风通道以及与出风通道连通的出风口；叶片组件,位于风道壳内,叶片组件包括支撑杆和设置于支撑杆的叶片,叶片包括两个叶片段和连接两个叶片段的连接部,连接部可转动地设置于支撑杆。本发明的技术方案解决了现有技术中的出风装置因出风不顺畅而导致噪音大的问题。(The invention provides an air outlet device, a fan and a control method of the fan. The air-out device includes: the air duct shell is provided with an air inlet, an air outlet channel communicated with the air inlet and an air outlet communicated with the air outlet channel; the blade subassembly is located the wind channel shell, and the blade subassembly includes the bracing piece and sets up in the blade of bracing piece, and the blade includes two blade sections and the connecting portion of connecting two blade sections, and connecting portion rotationally set up in the bracing piece. The technical scheme of the invention solves the problem of high noise caused by unsmooth air outlet of the air outlet device in the prior art.)

1. The utility model provides an air-out device which characterized in that includes:

the air duct shell (10) is provided with an air inlet (11), an air outlet channel communicated with the air inlet (11) and an air outlet (12) communicated with the air outlet channel;

the blade assembly (20) is positioned in the air duct shell (10), the blade assembly (20) comprises a supporting rod (21) and blades (22) arranged on the supporting rod (21), each blade (22) comprises two blade sections (221) and a connecting part (222) for connecting the two blade sections (221), and the connecting parts (222) are rotatably arranged on the supporting rod (21).

2. The air outlet device of claim 1, characterized in that an included angle θ is formed between the two blade segments (221), and the included angle θ satisfies the following formula: theta is more than or equal to 140 degrees and less than or equal to 155 degrees.

3. The air outlet device of claim 1, characterized in that the blade segment (221) has a flow guiding surface (223), and the two flow guiding surfaces (223) of the two blade segments (221) are tangentially connected.

4. The air outlet device of any one of claims 1 to 3, wherein the air outlet (12) comprises a first air outlet (121) and a second air outlet (122) which are correspondingly arranged at two opposite sides of the air duct shell (10), and the air outlet device further comprises a first baffle (13) arranged at the first air outlet (121) in an opening and closing manner and a second baffle (14) arranged at the second air outlet (122) in an opening and closing manner.

5. The air outlet device of claim 4, further comprising:

the detection device (30) is arranged on the outer wall surface of the air duct shell (10), and the detection device (30) is used for detecting included angles between the first air outlet (121) and the heat source and included angles between the second air outlet (122) and the heat source;

a controller connected to the detection device (30);

the driving parts (40) are correspondingly connected with the first baffle (13) and the second baffle (14), the driving parts (40) are connected with the controller, and the controller controls the opening and closing of the first baffle (13) and the second baffle (14) according to the detection result of the detection device (30).

6. The air outlet device of claim 5, wherein the detection device (30) comprises a temperature sensor for detecting the temperature of the heat source and an angle sensor for detecting the included angle between the heat source and the air outlet (12).

7. A fan, characterized by comprising a base, a fan located in the base, and the air outlet device of any one of claims 1 to 6 connected with the base.

8. The fan according to claim 7, wherein the air outlet device further comprises a controller located in the base and an adjusting motor (50) located in the air duct shell (10), the adjusting motor (50) is connected with the supporting rod (21), and the adjusting motor (50) is used for adjusting an included angle β between the blade (22) and a horizontal plane; the adjusting motor (50) and the fan are both connected with the controller, and the controller adjusts the included angle beta according to the rotating speed of the fan.

9. The fan according to claim 7, characterized in that the fan further comprises a rotary base (2) between the base and the air outlet means, the rotary base (2) being rotatably arranged with respect to the base.

10. The fan according to claim 7, wherein the air duct casing (10) comprises two oppositely disposed casings and a support portion connected with the casings, the support portion is disposed between the two casings, the two casings and the support portion enclose a hollow structure, and the casing has the air outlet channel and the air outlet (12).

11. A control method of a fan, characterized in that the control method controls the fan according to any one of claims 7 to 10.

12. The method for controlling a fan according to claim 11, wherein the air outlet (12) comprises a first air outlet (121) and a second air outlet (122) correspondingly disposed at two opposite sides of the air duct shell (10), and the method comprises:

step S10: determining an included angle X1 between the first air outlet (121) and a heat source and an included angle X2 between the second air outlet (122) and the heat source;

step S20: and determining air outlet from the first air outlet (121) or the second air outlet (122) according to the included angles X1 and X2.

13. The method as claimed in claim 12, further comprising a first determining step S21 of determining whether the included angle X1 is greater than or equal to the included angle X2, if so, performing the step S22 of discharging air from the second outlet (122), and if not, performing the step S23 of discharging air from the first outlet (121).

14. The method of claim 12, wherein the blades (22) have an included angle β with a horizontal plane, and after the step S20, the method further comprises an adjusting step S25 of adjusting the included angle β according to a rotational speed of a fan of the fan.

15. The method of controlling a fan according to claim 14, wherein the adjusting step includes: when the rotating speed of the fan is [1500, 2500] rpm, adjusting the included angle beta to be between-5 degrees and 5 degrees; when the rotating speed of the fan is [2500, 3500] rpm, adjusting the included angle beta to be between 0 and 8 degrees; and when the rotating speed of the fan is [3500, 5000] rpm, adjusting the included angle beta to be between 5 and 15 degrees.

16. The method for controlling a fan according to any one of claims 12 to 15, wherein after the step S20, the method further comprises:

step S30: a rotary base (2) for rotating the fan;

step S40: a second determination step of determining whether the included angle X1 or the included angle X2 is equal to zero, and if so, performing the step S50 of locking the rotating base (2) on a base; if not, the step S30 is repeatedly executed.

17. The method of controlling a fan according to claim 16, further comprising a third judging step S60 of judging whether the temperature of the heat source is greater than a preset temperature value in real time, and if so, repeating the step S30; if not, step S70 of reducing the fan speed and shifting gears is executed.

Technical Field

The invention relates to the technical field of household appliances, in particular to an air outlet device, a fan and a control method of the fan.

Background

Among the prior art, the segmental arc of the blade of air-out device has certain water conservancy diversion effect, but, the blade only includes segmental arc and connecting portion, and connecting portion are connected with the bracing piece, and like this, the air current flow field in the air-out passageway is by supreme down, and the blade can be flowed through to the air current, and the nearly 90 degree sudden change can appear in the direction of air current when the connecting portion of blade, like this, can make the air-out device air-out unsmooth to lead to the air-out device to produce great noise.

Disclosure of Invention

The invention mainly aims to provide an air outlet device, a fan and a control method of the fan, and aims to solve the problem that the noise is high due to unsmooth air outlet of the air outlet device in the prior art.

In order to achieve the above object, according to an aspect of the present invention, there is provided an air outlet device including: the air duct shell is provided with an air inlet, an air outlet channel communicated with the air inlet and an air outlet communicated with the air outlet channel; the blade subassembly is located the wind channel shell, and the blade subassembly includes the bracing piece and sets up in the blade of bracing piece, and the blade includes two blade sections and the connecting portion of connecting two blade sections, and connecting portion rotationally set up in the bracing piece.

Further, the two blade segments have an included angle θ therebetween, and the included angle θ satisfies the following formula: theta is more than or equal to 140 degrees and less than or equal to 155 degrees.

Furthermore, the blade segments have flow guide surfaces, and the two flow guide surfaces of the two blade segments are tangentially connected.

Further, the air outlet includes first air outlet and the second air outlet that corresponds the setting in the relative both sides of wind channel shell, and the air-out device still includes the first baffle that can open and shut setting in first air outlet department and can open and shut the second baffle that sets up in second air outlet department.

Further, the air-out device still includes: the detection device is arranged on the outer wall surface of the air duct shell and used for detecting included angles between the first air outlet and the heat source and included angles between the second air outlet and the heat source; the controller is connected with the detection device; and the driving parts are correspondingly connected with the first baffle and the second baffle and are connected with the controller, and the controller controls the opening and closing of the first baffle and the second baffle according to the detection result of the detection device.

Further, the detection device comprises a temperature sensor for detecting the temperature of the heat source and an angle sensor for detecting an included angle between the heat source and the air outlet.

According to another aspect of the present invention, a fan is provided, which includes a base, a blower located in the base, and the above-mentioned air outlet device connected to the base.

Furthermore, the air outlet device also comprises a controller positioned in the base and an adjusting motor positioned in the air duct shell, wherein the adjusting motor is connected with the supporting rod and used for adjusting an included angle beta between the blade and the horizontal plane; the adjusting motor and the fan are both connected with the controller, and the controller adjusts the included angle beta according to the rotating speed of the fan.

Furthermore, the fan also comprises a rotating seat positioned between the base and the air outlet device, and the rotating seat is rotatably arranged relative to the base.

Further, the air duct shell comprises two oppositely arranged shells and a supporting part connected with the shells, the supporting part is arranged between the two shells, the two shells and the supporting part enclose a hollow structure, and the shells are provided with air outlet channels and air outlets.

According to another aspect of the present invention, a method for controlling a fan is provided, which controls the fan.

Further, the air outlet includes a first air outlet and a second air outlet which are correspondingly arranged at two opposite sides of the air duct shell, and the control method includes: step S10: determining an included angle X1 between the first air outlet and the heat source and an included angle X2 between the second air outlet and the heat source; step S20: and determining air outlet from the first air outlet or the second air outlet according to the included angles X1 and X2.

Further, the control method further includes a first determining step S21 of determining whether the included angle X1 is greater than or equal to the included angle X2, if so, executing a step S22 of discharging air from the second outlet, and if not, executing a step S23 of discharging air from the first outlet.

Further, the blade has an included angle β with the horizontal plane, and after the step S20, the control method further includes an adjusting step S25 of adjusting the included angle β according to the rotation speed of the fan.

Further, the adjusting step comprises: when the rotating speed of the fan is 1500, 2500rpm, adjusting the included angle beta to be between-5 degrees and 5 degrees; when the rotating speed of the fan is [2500, 3500] rpm, adjusting the included angle beta to be between 0 and 8 degrees; when the rotating speed of the fan is [3500, 5000] rpm, the included angle beta is adjusted to be between 5 degrees and 15 degrees.

Further, after step S20, the control method further includes: step S30: a rotary base for rotating the fan; step S40: a second determination step of determining whether the included angle X1 or the included angle X2 is equal to zero, and if so, performing the step S50 of locking the rotating base on the base; if not, step S30 is repeated.

Further, the control method further includes a third determining step S60 of determining whether the temperature of the heat source is greater than the preset temperature value in real time, and if so, repeatedly executing step S30; if not, step S70 of reducing the fan speed and shifting gears is executed.

By applying the technical scheme of the invention, two blade sections which can rotate relative to the supporting rod and a connecting part for connecting the two blade sections are arranged, and the connecting part is connected with the supporting rod, so that the two blade sections are respectively positioned at two sides of the supporting rod in the transverse direction (the direction vertical to the axial direction of the supporting rod), when airflow enters the air outlet channel from the air inlet along the vertical direction and flows through the blades, the airflow firstly flows through the lower surface of one blade section positioned below the air outlet device and then flows to the lower surface of the other blade section positioned above the air outlet device along the lower surface of the blade section, thereby leading the airflow to turn to the air outlet from the air inlet along an obtuse angle all the time, avoiding the sudden change of the angle of the airflow when the airflow flows from the air inlet to the blades, greatly reducing the vortex generated by the airflow at the blades, and leading the airflow, thereby avoiding the air outlet device from generating larger noise.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of an air outlet device according to an embodiment of the present invention;

fig. 2a shows a front view of the air outlet device of fig. 1 (in which the first air outlet is in an open state and the second air outlet is in a closed state);

fig. 2b shows a cross-sectional view of the wind outlet device of fig. 2 a;

fig. 2c shows a cross-sectional view of the wind outlet device of fig. 2a in another direction;

fig. 3a shows a front view of the air outlet device of fig. 1 (wherein the first air outlet is in a closed state, and the second air outlet is in an open state);

fig. 3b shows a cross-sectional view of the air outlet device of fig. 3 a;

fig. 3c shows a cross-sectional view of the wind outlet device of fig. 3a in another direction;

fig. 4a shows a front view of the air outlet device of fig. 1 (wherein the first air outlet and the second air outlet are both in an open state);

fig. 4b shows a cross-sectional view of the wind outlet device of fig. 4 a;

fig. 4c shows a cross-sectional view of the wind outlet device of fig. 4a in another direction;

FIG. 5a shows a schematic structural view of the blade assembly and adjustment motor connection of FIG. 1;

FIG. 5b shows a structural schematic view of the blade assembly and adjustment motor of FIG. 5a in another orientation;

FIG. 5c shows a structural schematic view of the blade assembly and adjustment motor of FIG. 5a in another orientation;

FIG. 6a shows a schematic view of the blade of FIG. 5 c;

FIG. 6b shows a left side view of the blade of FIG. 6 a;

FIG. 6c shows a top view of the blade of FIG. 6 a;

FIG. 7 illustrates a partial flow chart of a method of controlling a fan of an embodiment of the present invention; and

fig. 8 shows a flowchart of a control method of a fan of an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. an air duct shell; 11. an air inlet; 12. an air outlet; 121. a first air outlet; 122. a second air outlet; 13. a first baffle plate; 14. a second baffle; 20. a blade assembly; 21. a support bar; 22. a blade; 221. a blade segment; 222. a connecting portion; 223. a flow guide surface; 30. a detection device; 40. a drive section; 50. adjusting the motor; 2. a rotating seat.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It should be noted that, as shown in fig. 2b, in the embodiment of the present invention, there are a plurality of blades 22. In the vertical direction, a plurality of blades 22 are sequentially distributed on the support rod 21 from top to bottom.

It should be noted that, as shown in fig. 2b, in the embodiment of the present invention, the air outlets 12 are distributed on two side walls of the air duct casing along the vertical direction, the air inlets 11 are disposed in the horizontal plane, and the air outlets 12 are substantially perpendicular to the air inlets 11.

It should be noted that, as shown in fig. 2b, in the embodiment of the present invention, when the air outlet device is in the use state, the side facing the user is the front side, and the side facing away from the user is the rear side. Thus, the first air outlet 121 is located at the front side of the air outlet device, and the second air outlet 122 is located at the rear side of the air outlet device.

As shown in fig. 1 to 2c, the present invention provides an air outlet device. The air outlet device of this embodiment includes an air duct case 10 and a blade assembly 20. The air duct shell 10 is provided with an air inlet 11, an air outlet channel communicated with the air inlet 11 and an air outlet 12 communicated with the air outlet channel; the blade assembly 20 is located in the air duct casing 10, the blade assembly 20 includes a support rod 21 and a blade 22 disposed on the support rod 21, the blade 22 includes two blade segments 221 and a connecting portion 222 connecting the two blade segments 221, the connecting portion 222 is disposed on the support rod 21, and the two blade segments are respectively located on two lateral sides (a direction perpendicular to an axial direction of the support rod) of the support rod. Specifically, the connecting portion 222 is rotatably disposed on the supporting rod 21, so as to drive the entire blade 22 to rotate relative to the supporting rod 21.

In the above-mentioned setting, two blade segments are located the horizontal (with the axial vertical direction of bracing piece) both sides of bracing piece respectively, in air-out passageway is entered into along the vertical direction from air intake 11 to the air current, and when flowing through blade 22, the air current flows through the lower surface of the blade segment 221 that is in the air-out device below earlier, then flow to the lower surface of the blade segment 221 that is in the air-out device top along the lower surface of this blade segment 221, thereby make the air current turn to air outlet 12 along an obtuse angle by air intake 11, like this, can avoid the air current to take place the angle sudden change when flowing to blade 22 from air intake 11, very big reduction the vortex that the air current produced in blade 22 department, thereby make the air current flow more smooth and easy, and then avoid the air-out device.

Specifically, in the embodiment of the present invention, the two blade segments 221 are arranged, so that the flow guiding requirement under the condition that the air outlet device outlets air from the front and the back can be met.

In embodiments of the present invention, the number of blades 22 may be three to ten. Preferably, the number of blades 22 is five.

As shown in fig. 6a, in the embodiment of the present invention, two blade segments 221 have an included angle θ therebetween, and the included angle θ satisfies the following formula: theta is more than or equal to 140 degrees and less than or equal to 155 degrees.

Through the arrangement, the two blade sections 221 can be gently connected under the condition that the good flow guide capacity is ensured, and in the process that the air flow flows out of the air outlet from the air inlet, the air flow can more smoothly flow through one blade section 221 from the other blade section 221, so that the noise generated by the air outlet device is reduced.

It should be noted that, in the embodiment of the present invention, the included angle θ is an included angle formed by tangents to the ends of the two blade segments 221 in a vertical plane.

Preferably, in the embodiment of the present invention, the included angle θ is set to 150 °. Therefore, the two blade sections 221 can be connected smoothly and better, the resistance of the airflow is reduced, and the noise of the air outlet device is reduced.

Preferably, as shown in fig. 6b and 6c, in the embodiment of the present invention, the width of the blade segment 221 gradually decreases from the side where the connecting portion 222 is located to the free end of the blade segment 221, so that the airflow can be guided better.

As shown in fig. 6a, in an embodiment of the invention, the blade segment 221 has a flow guiding surface 223, and the two flow guiding surfaces 223 of the two blade segments 221 are tangentially connected.

In the above arrangement, the two guide surfaces 223 can be smoothly connected by tangentially connecting the two blade segments 221, so that the airflow can more smoothly flow to the other guide surface 223 through the one guide surface 223, thereby reducing noise generated by the airflow.

Preferably, in the embodiment of the present invention, the vane segment 221 is an arc plate, and the flow guiding surface 223 is a curved surface. Through the above setting, when the air current passes through blade 22, curved blade 22 can carry out water conservancy diversion in advance to the air current, the air current that makes air outlet 12 can have a trend of downflow through blade 22, like this, lower air current is blowing when far away, along with the increase of distance, the air current also can rise gradually, thereby make the air current just to ground arrival user's position, the air-out that the air current that can effectively avoid air outlet 12 upwards wafts and cause is uneven, and then make the air-out device air-out more even.

In the embodiment of the present invention, the tangent connection between the two flow guiding surfaces 223 means that the extension surfaces of the two flow guiding surfaces 223 facing one end of the connecting portion 222 are tangent.

As shown in fig. 2a to 4c, in the embodiment of the present invention, the air outlet 12 includes a first air outlet 121 and a second air outlet 122 correspondingly disposed at two opposite sides of the air duct shell 10, and the air outlet device further includes a first baffle 13 openably disposed at the first air outlet 121 and a second baffle 14 openably disposed at the second air outlet 122.

In the above arrangement, the first air outlet 121 can be used for discharging air by opening the first baffle 13 and closing the second baffle 14; the second air outlet 122 can be used for discharging air by opening the second baffle 14 and closing the first baffle 13; through opening first baffle 13, second baffle 14 is all opened to can realize the both sides air-out of air-out device, like this, can cool down the heat source more effectively, and also can be effectively with the wind that air-out device blew off better towards the heat source.

As shown in fig. 2a to 4c, in the embodiment of the present invention, the air outlet device further includes a detection device 30, a controller, and a plurality of driving portions 40. The detection device 30 is disposed on the outer wall surface of the air duct shell 10, and the detection device 30 is used for detecting included angles between the first air outlet 121 and the heat source and between the second air outlet 122 and the heat source; the controller is connected with the detection device 30; the plurality of driving parts 40 are correspondingly connected with the first baffle 13 and the second baffle 14, the driving parts 40 are connected with a controller, and the controller controls the opening and closing of the first baffle 13 and the second baffle 14 according to the detection result of the detection device 30.

With the above arrangement, as shown in fig. 2a to 2c, when the front side of the air outlet device is exhausted, the driving portion 40 located at the front side drives the first baffle 13 to open, and the driving portion 40 located at the rear side drives the second baffle 14 to close, so that the front side of the air outlet device is exhausted; as shown in fig. 3a to 3c, when the rear side of the air outlet device needs to be exhausted, the driving portion 40 located at the rear side drives the second flap 14 to open, and the driving portion 40 located at the front side drives the first flap 13 to close, so that the rear side of the air outlet device is exhausted; as shown in fig. 4a to 4c, when the front side and the rear side of the air outlet device need to be exhausted, the two driving portions 40 drive the first baffle 13 and the second baffle 14 to be in the open position, so that the front side and the rear side of the air outlet device are exhausted.

Preferably, in the embodiment of the present invention, the number of the driving portions 40 is two, and the two driving portions 40 are respectively provided in one-to-one correspondence with the first barrier 13 and the second barrier 14.

Specifically, in the embodiment of the present invention, the detection device 30 may detect the direction of the heat source, and may detect the surface temperature of the heat source. The detection device feeds back the detected signal to the controller, and the controller controls the driving part 40 to control the opening and closing of the first baffle 13 and the second baffle 14, so as to control the front side air outlet or the rear side air outlet of the air outlet device.

Preferably, in the embodiment of the present invention, the wind direction of the outlet air can be changed by continuously adjusting the rotation angle of the blades 22, so that the outlet air device has a multi-angle wind sweeping function, in this way, in the outlet air channel, the blade section 221 located below can pre-guide the airflow, and the blade section 221 located above can guide and sweep the wind.

According to another aspect of the present invention, an embodiment of the present invention provides a fan. The fan comprises a base, a fan positioned in the base and the air outlet device connected with the base. Through the arrangement, the wind generated by the fan can be blown out through the wind outlet device.

It should be noted that the fan according to the embodiment of the present invention has all the advantages of the air outlet device, and details are not repeated herein.

As shown in fig. 5a to 5c, in the embodiment of the present invention, the air outlet device further includes a controller located in the base and an adjusting motor 50 located in the air duct shell 10, the adjusting motor 50 is connected to the supporting rod 21, and the adjusting motor 50 is used for adjusting an included angle β between the blade 22 and a horizontal plane; the adjusting motor 50 and the fan are both connected with a controller, and the controller adjusts the included angle beta according to the rotating speed of the fan.

In the above arrangement, the support rod 21 is moved up and down by the adjusting motor 50, so as to drive the blades 22 to rotate to a proper included angle, and then the airflow is guided by the blades 22 at a proper angle, so that the flow field in the air outlet channel is smoother, and the aerodynamic noise is reduced.

The above-mentioned adjusting motor 50 adjusts the rotation angle of the blade 22 through the support rod 21, and the adjustment is performed through a link mechanism, which is not described herein again for the prior art.

In the embodiment of the present invention, as shown in fig. 6a, the included angle β includes an included angle β 1 and an included angle β 2. Wherein the included angle β 1 is an included angle between a tangent line at the tip of the blade segment 221 facing the front side and the horizontal plane; the angle β 2 is the angle between the tangent at the tip of the blade section 221 towards the rear side and the horizontal plane.

The air outlet device can smoothly and uniformly exhaust air from the front side by adjusting the included angle beta 1, and the air outlet device can smoothly and uniformly exhaust air from the rear side by adjusting the included angle beta 2.

In the above arrangement, the included angle β 1 and/or the included angle β 2 are/is changed within a certain range of angle according to the rotation speed of the fan, so that the air outlet device can realize the multi-angle air sweeping purpose.

As shown in fig. 2a to 2c, in the embodiment of the present invention, when the front side of the air outlet device is exhausted, the included angle β 1 can be adjusted by the support rod 21 and the adjusting motor 50, and when the fans of the fans are at different rotation speeds, the included angle β 1 corresponds to different included angle ranges. When the rotating speed of the fan is more than or equal to 1500rpm and less than or equal to 2500rpm, the included angle beta 1 can be controlled to change between minus 5 degrees and 5 degrees; when the rotating speed of the fan is more than or equal to 2500rpm and less than or equal to 3500rpm, controlling the included angle beta 1 to change between 0 and 8 degrees; when the rotating speed of the fan is greater than or equal to 3500rpm and less than or equal to 5000rpm, the included angle beta 1 is controlled to change between 5 degrees and 15 degrees, so that the included angle beta 1 can change in the optimal direction at the corresponding rotating speed, the air outlet smoothness and uniformity of the air outlet device are improved, and the changed included angle beta 1 can realize better air sweeping. It should be noted that when the included angle β 1 changes, the included angle β 2 between the blade section 221 at the rear side and the horizontal plane also changes.

As shown in fig. 3a to 3c, in the embodiment of the present invention, when air is discharged from the rear side of the air outlet device, the included angle β 2 can be directly adjusted by the support rod 21 and the adjusting motor 50, and when the fans of the fans are at different rotation speeds, the included angle β 2 corresponds to different included angle ranges. When the rotating speed of the fan is more than or equal to 1500rpm and less than or equal to 2500rpm, the included angle beta 2 can be adjusted and changed between minus 5 degrees and 5 degrees; when the rotating speed of the fan is more than or equal to 2500rpm and less than or equal to 3500rpm, the included angle beta 2 can be adjusted and changed between 0 DEG and 8 DEG; when the rotating speed of the fan is greater than or equal to 3500rpm and less than or equal to 5000rpm, the included angle beta 2 can be adjusted and changed between 5 degrees and 15 degrees, so that the included angle beta 2 can be changed in the optimal direction at the corresponding rotating speed, the air outlet smoothness and uniformity of the air outlet device are improved, and the changed included angle beta 2 can realize better multi-angle air sweeping.

As shown in fig. 4a to 4c, in the embodiment of the present invention, when both the front side and the rear side of the air outlet device are exhausted, the support rod 21 and the adjusting motor 50 may adjust the angles of the included angle β 1 and the included angle β 2 to ensure that the initial included angle β 1 is 165 °, and adjust β 1 to change between 150 ° and 180 °, so as to achieve both the front side and the rear side of the air outlet device are exhausted, and achieve the effect of sweeping the air up and down.

Preferably, in the embodiment of the present invention, the detecting device 30 includes a temperature sensor for detecting the temperature of the heat source and an angle sensor for detecting the included angle between the heat source and the air outlet 12. The detection device 30 may be an infrared heat source sensor or a camera head, etc., and may be provided as the detection device 30 as long as it can recognize the direction of the heat source and detect the temperature of the heat source.

As shown in fig. 1, in the embodiment of the present invention, the fan further includes a rotating base 2 located between the base and the air outlet device, and the rotating base 2 is rotatably disposed relative to the base.

Through the arrangement, the rotating base 2 can be rotated, so that the angle of the air outlet 12 of the fan relative to the heat source can be adjusted, the fan can blow air towards the heat source more accurately, and the purpose of rapid cooling is achieved.

As shown in fig. 1, in the embodiment of the present invention, the air duct shell 10 includes two shells oppositely disposed and a supporting portion connected to the shells, the supporting portion is disposed between the two shells, the two shells and the supporting portion form a hollow structure, and the shells have an air outlet channel and an air outlet 12.

Through the arrangement, the hollow shell can form an air outlet channel, so that air flow can better enter the air outlet channel from the air inlet 11 and blow out from the air outlet 12, and an accommodating space for accommodating the blades 22 and the supporting rods 21 can be formed inside the shell.

According to another aspect of the present invention, an embodiment of the present invention provides a control method of a fan, which controls the fan.

As shown in fig. 7, in the embodiment of the present invention, the air outlet 12 includes a first air outlet 121 and a second air outlet 122 correspondingly disposed on two opposite sides of the air duct shell 10, and the control method includes: step S10: determining an included angle X1 between the first air outlet 121 and the heat source and an included angle X2 between the second air outlet 122 and the heat source; step S20: according to the included angles X1 and X2, the air is determined to be discharged from the first outlet 121 or the second outlet 122.

Among the above-mentioned technical scheme, detect the size of contained angle X1 and X2 through detection device 30 to select first air outlet 121 or second air outlet 122 air-out, like this, can make the fan blow towards the heat source better, select one in two air outlets 12 to go on the air-out, also can avoid the waste of the energy.

It should be noted that, in the embodiment of the present invention, before step S10, the rotating base 2 of the fan needs to return to the initial position.

As shown in fig. 8, in the embodiment of the present invention, the control method further includes a first determining step S21 of determining whether the included angle X1 is greater than or equal to the included angle X2, if so, performing a step S22 of discharging air from the second air outlet 122, and if not, performing a step S23 of discharging air from the first air outlet 121.

In the above technical solution, when the included angle X1 is greater than the included angle X2, that is, the angle of the air outlet 12 (i.e., the second air outlet 122) at the rear side with respect to the heat source is smaller, so that the second air outlet 122 is selected to discharge air, thereby better aligning to the heat source for blowing air; when the included angle X1 is smaller than the included angle X2, that is, the angle of the air outlet 12 (i.e., the first air outlet 121) on the front side with respect to the heat source is smaller, so that the air is discharged from the first air outlet 121, and the air can be better directed at the heat source to blow air; when the included angle X1 is equal to the included angle X2, the second air outlet 122 may be selected to exhaust air, and in an alternative embodiment, the first air outlet 121 may also be selected to exhaust air when the included angle X1 is equal to the included angle X2.

At this time, no matter which air outlet 12 is selected to discharge air, the fan selects the maximum fan rotation speed to blow air.

As shown in fig. 8, in the embodiment of the present invention, the blade 22 has an included angle β with the horizontal plane, and after the step S20, the control method further includes an adjusting step S25 of adjusting the included angle β according to the rotation speed of the fan.

In the above technical solution, after the air is discharged from the first air outlet 121 or the second air outlet 122, the included angle β between the blade 22 and the horizontal plane is adjusted by the rotation speed of the fan, so that the air flow can flow more smoothly along the blade 22, and the air blown from the air discharging device can be more uniform when reaching the heat source, thereby avoiding deviation from the heat source due to upward drift in the flowing process, and further, according to the range of the rotation speed of the fan, the air swept by the fan can be more uniform. It should be noted that, in the process of executing the adjusting step S25, the current outlet 12 is kept to be discharged (i.e., discharged from the first outlet 121 or discharged from the second outlet 122).

In an embodiment of the present invention, the adjusting step S25 includes: when the rotating speed of the fan is 1500, 2500rpm, adjusting the included angle beta to be between-5 degrees and 5 degrees; when the rotating speed of the fan is [2500, 3500] rpm, adjusting the included angle beta to be between 0 and 8 degrees; when the rotating speed of the fan is [3500, 5000] rpm, the included angle beta is adjusted to be between 5 degrees and 15 degrees.

The included angle β in the adjusting step S25 refers to an included angle β 1 and an included angle β 2, and when the front side of the air outlet device is exhausted, the included angle β 1 may be adjusted according to the rotation speed of the fan, and when the rear side of the air outlet device is exhausted, the included angle β 2 may be adjusted according to the rotation speed of the fan, and here, the manner of adjusting the included angle β with the air outlet device is consistent, and is not described again.

As shown in fig. 8, in the embodiment of the present invention, after step S20, the control method further includes: step S30: a rotary base 2 for rotating the fan; step S40: a second determination step of determining whether the included angle X1 or the included angle X2 is equal to zero, and if so, performing the step S50 of locking the rotating base 2 on the base; if not, step S30 is repeated.

In the above technical solution, after it is determined that the first air outlet 121 or the second air outlet 122 is used for air outlet, the rotary base 2 may be adjusted, so that the air outlet 12 of the fan is aligned with the heat source to blow air, thereby providing better experience for users, and by determining whether the included angle X1 or the included angle X2 is equal to zero in real time, that is, determining whether the opened air outlet 12 is aligned with the heat source in real time, if the opened air outlet 12 and the heat source are in the same plane, the angle of the rotary base 2 of the fan is maintained, if the opened air outlet 12 and the heat source are not in the same plane, the rotary base 2 continues to rotate until the air outlet 12 is aligned with the heat source. Like this, can realize that the air-out self-adaptation of fan follows the user to user's comfort experience has been increased.

Through the above steps, even if the heat source is constantly changing position, the air blown out of the outlet 12 can reach the position of the heat source.

As shown in fig. 8, in the embodiment of the present invention, the control method further includes a third determining step S60 for determining whether the temperature of the heat source is greater than the preset temperature value in real time, and if so, the step S30 is repeatedly executed; if not, step S70 of reducing the fan speed and shifting gears is executed.

Among the above-mentioned technical scheme, through the temperature of judging the heat source in real time, when the heat source temperature is higher than the default, then continue to blow the heat source and cool down, when the heat source temperature is less than the default, then can reduce the wind speed, like this, can cool down the heat source better, improve the travelling comfort of product and experience, further also can avoid the waste of the energy.

In the embodiment of the present invention, the shift position refers to turning down the rotation speed of the fan, and enters a standby state after running for a period of time.

In the embodiment of the present invention, the preset temperature value is greater than or equal to 37 ℃ and less than or equal to 37.5 ℃.

Preferably, in the embodiment of the present invention, the preset temperature value is set to 37.2 ℃.

It should be noted that, in the embodiment of the present invention, the air outlet device provided in the embodiment of the present invention can realize multi-angle air supply, and at the same time, can also increase uniformity of air outlet and reduce aerodynamic noise, and the fan can be converted into an intelligent home by adding the control method of the fan, so as to realize interpersonal interaction to the maximum extent.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the two blade sections which are gently connected are arranged and can be rotatably arranged, when airflow enters the air outlet channel from the air inlet along the vertical direction and flows through the blades, the airflow firstly flows through the lower surfaces of the blade sections below the air outlet device and then flows to the lower surfaces of the blade sections above the air outlet device along the lower surfaces of the blade sections, so that the airflow is turned to the air outlet from the air inlet along an obtuse angle, the airflow can be prevented from suddenly changing angles when flowing from the air inlet to the blades, the eddy generated by the airflow at the blades is greatly reduced, the airflow flows more smoothly, and the air outlet device is prevented from generating larger noise; furthermore, by providing a control method of the fan, the air outlet of the fan can be made to adaptively follow the user, so that the comfort experience of the user is increased.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.