Air outlet device, fan and fan control method

Abstract

The present invention provides an air outlet device, a fan and a control method of the fan. The air outlet device comprises: an air duct shell having an air inlet, an air outlet channel connected to the air inlet and an air outlet connected to the air outlet channel; a blade assembly located in the air duct shell, the blade assembly comprising a support rod and a blade arranged on the support rod, the blade comprising two blade segments and a connecting portion connecting the two blade segments, and the connecting portion is rotatably arranged on the support rod. The technical solution of the present invention solves the problem of high noise caused by unsmooth air outlet in the air outlet device in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of household electrical appliances, and in particular to an air outlet device, a fan and a control method of the fan. Background Art

[0002] In the prior art, the arc section of the blade of the air outlet device has a certain guiding effect, but the blade only includes the arc section and the connecting part, and the connecting part is connected to the support rod. In this way, the airflow field in the air outlet channel is from bottom to top, and the airflow will flow through the blade. When the airflow passes through the connecting part of the blade, the direction of the airflow will change nearly 90 degrees. In this way, the air outlet device will not discharge air smoothly, thereby causing the air outlet device to generate greater noise. Summary of the invention

[0003] The main purpose of the present invention is to provide an air outlet device, a fan and a fan control method to solve the problem of high noise caused by unsmooth air outlet of the air outlet device in the prior art.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, an air outlet device is provided, including: an air duct shell, having an air inlet, an air outlet channel connected to the air inlet, and an air outlet connected to the air outlet channel; a blade assembly, located in the air duct shell, the blade assembly includes a support rod and a blade arranged on the support rod, the blade includes two blade segments and a connecting portion connecting the two blade segments, and the connecting portion is rotatably arranged on the support rod.

[0005] Further, an angle θ is formed between the two blade segments, and the angle θ satisfies the following formula: 140°≤θ≤155°.

[0006] Furthermore, the blade segment has a guide surface, and the two guide surfaces of the two blade segments are tangentially connected.

[0007] Furthermore, the air outlet includes a first air outlet and a second air outlet correspondingly arranged on opposite sides of the air duct shell, and the air outlet device also includes a first baffle that can be opened and closed at the first air outlet and a second baffle that can be opened and closed at the second air outlet.

[0008] Furthermore, the air outlet device also includes: a detection device, which is arranged on the outer wall of the air duct shell, and the detection device is used to detect the angle between the first air outlet, the second air outlet and the heat source; a controller, which is connected to the detection device; and multiple driving parts, which are correspondingly connected to the first baffle and the second baffle, and the driving parts are connected to 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.

[0009] Furthermore, the detection device includes a temperature sensor for detecting the temperature of the heat source and an angle sensor for detecting the angle between the heat source and the air outlet.

[0010] According to another aspect of the present invention, a fan is provided, comprising a base, a fan located in the base, and the above-mentioned air outlet device connected to the base.

[0011] Furthermore, the air outlet device also includes a controller located in the base and an adjusting motor located in the air duct shell, the adjusting motor is connected to the support rod, and the adjusting motor is used to adjust the angle β between the blades and the horizontal plane; the adjusting motor and the fan are both connected to the controller, and the controller adjusts the angle β according to the rotation speed of the fan.

[0012] Furthermore, the fan also includes a rotating seat located between the base and the air outlet device, and the rotating seat is rotatably arranged relative to the base.

[0013] Furthermore, the air duct shell includes two shells arranged opposite to each other and a support portion connected to the shells, the support portion is arranged between the two shells, the two shells and the support portion form a hollow structure, and the shell has an air outlet channel and an air outlet.

[0014] According to another aspect of the present invention, a method for controlling a fan is provided, and the method controls the above-mentioned fan.

[0015] Furthermore, the air outlet includes a first air outlet and a second air outlet correspondingly arranged on opposite sides of the air duct shell, and the control method includes: step S10: determining the angle X1 between the first air outlet and the heat source and the angle X2 between the second air outlet and the heat source; step S20: determining whether to discharge air from the first air outlet or the second air outlet based on the above-mentioned angles X1 and X2.

[0016] Furthermore, the control method also includes a first judging step S21 of judging whether the angle X1 is greater than or equal to the angle X2, if yes, executing step S22 of discharging air from the second air outlet, if not, executing step S23 of discharging air from the first air outlet.

[0017] Furthermore, there is an angle β between the blade and the horizontal plane. After step S20, the control method further includes an adjustment step S25 of adjusting the angle β according to the rotation speed of the fan.

[0018] Furthermore, the adjustment step includes: when the speed of the fan is [1500, 2500] rpm, adjusting the angle β between -5° and 5°; when the speed of the fan is [2500, 3500] rpm, adjusting the angle β between 0° and 8°; when the speed of the fan is [3500, 5000] rpm, adjusting the angle β between 5° and 15°.

[0019] Furthermore, after step S20, the control method further includes: step S30: rotating the rotating seat of the fan; step S40: a second judgment step of judging whether the angle X1 or the angle X2 is equal to zero, if yes, executing step S50 of locking the rotating seat on the base; if not, repeating step S30.

[0020] Furthermore, the control method also includes a third judgment step S60 of judging in real time whether the temperature of the heat source is greater than a preset temperature value. If yes, step S30 is repeated; if not, step S70 of reducing the fan speed and shifting the gear is executed.

[0021] The technical solution of the present invention is applied, by providing two blade segments rotatable relative to the support rod and a connecting part connecting the two blade segments, and connecting the connecting part to the support rod, so that the two blade segments are respectively located on both sides of the support rod in the lateral direction (a direction perpendicular to the axial direction of the support rod), when the airflow enters the air outlet channel from the air inlet in the vertical direction and flows through the blades, the airflow first flows through the lower surface of a blade segment below the air outlet device, and then flows along the lower surface of the blade segment to the lower surface of another blade segment above the air outlet device, so that the airflow always turns from the air inlet to the air outlet along an obtuse angle. In this way, it can avoid a sudden angle change of the airflow when it flows from the air inlet to the blades, greatly reducing the vortex generated by the airflow at the blades, so that the airflow flows more smoothly, thereby avoiding the air outlet device from generating a large noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 A schematic structural diagram of an air outlet device according to an embodiment of the present invention is shown;

[0024] Figure 2a Shows Figure 1 A front view of the air outlet device (wherein the first air outlet is in an open state and the second air outlet is in a closed state);

[0025] Figure 2b Shows Figure 2a A cross-sectional view of an air outlet device;

[0026] Figure 2c Shows Figure 2a A cross-sectional view of the air outlet device in another direction;

[0027] Figure 3a Shows Figure 1A front view of the air outlet device (wherein the first air outlet is in a closed state and the second air outlet is in an open state);

[0028] Figure 3b Shows Figure 3a A cross-sectional view of an air outlet device;

[0029] Figure 3c Shows Figure 3a A cross-sectional view of the air outlet device in another direction;

[0030] Figure 4a Shows Figure 1 A front view of the air outlet device (wherein the first air outlet and the second air outlet are both in an open state);

[0031] Figure 4b Shows Figure 4a A cross-sectional view of an air outlet device;

[0032] Figure 4c Shows Figure 4a A cross-sectional view of the air outlet device in another direction;

[0033] Figure 5a Shows Figure 1 A schematic diagram of the structure of the blade assembly and the regulating motor connection;

[0034] Figure 5b Shows Figure 5a A schematic diagram of the structure of the blade assembly and the regulating motor in another direction;

[0035] Figure 5c Shows Figure 5a A schematic diagram of the structure of the blade assembly and the regulating motor in another direction;

[0036] Figure 6a Shows Figure 5c Schematic diagram of the structure of the blade;

[0037] Figure 6b Shows Figure 6a Left side view of the blade;

[0038] Figure 6c Shows Figure 6a A top view of a blade;

[0039] Figure 7 A partial flow chart showing a method for controlling a fan according to an embodiment of the present invention; and

[0040] Figure 8 A flow chart showing a method for controlling a fan according to an embodiment of the present invention is shown.

[0041] The above drawings include the following reference numerals:

[0042] 10. Air duct shell; 11. Air inlet; 12. Air outlet; 121. First air outlet; 122. Second air outlet; 13. First baffle; 14. Second baffle; 20. Blade assembly; 21. Support rod; 22. Blade; 221. Blade segment; 222. Connecting part; 223. Guide surface; 30. Detection device; 40. Driving part; 50. Adjustment motor; 2. Rotating seat. DETAILED DESCRIPTION

[0043] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0044] It should be noted that if Figure 2b As shown, in the embodiment of the present invention, there are multiple blades 22. In the vertical direction, the multiple blades 22 are sequentially distributed on the support rod 21 from top to bottom.

[0045] It should be noted that if Figure 2b As shown, in the embodiment of the present invention, the air outlets 12 are distributed on two side walls of the air duct shell in the vertical direction, the air inlet 11 is arranged in a horizontal plane, and the air outlets 12 are substantially perpendicular to the air inlet 11 .

[0046] It should be noted that if Figure 2b As shown, in the embodiment of the present invention, when the air outlet device is in use, the side facing the user is the front side, and the side away from the user is the rear side. In this way, 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.

[0047] like Figure 1 to Figure 2c As shown, the embodiment of the present invention provides an air outlet device. The air outlet device of this embodiment includes an air duct shell 10 and a blade assembly 20. The air duct shell 10 has an air inlet 11, an air outlet channel connected to the air inlet 11, and an air outlet 12 connected to the air outlet channel; the blade assembly 20 is located in the air duct shell 10, and the blade assembly 20 includes a support rod 21 and a blade 22 arranged on the support rod 21, and the blade 22 includes two blade segments 221 and a connecting portion 222 connecting the two blade segments 221, and the connecting portion 222 is arranged on the support rod 21, and the two blade segments are respectively located on both sides of the lateral direction (the direction perpendicular to the axial direction of the support rod) of the support rod. Specifically, the connecting portion 222 is rotatably arranged on the support rod 21 to drive the entire blade 22 to rotate relative to the support rod 21.

[0048] In the above arrangement, the two blade segments are respectively located on both sides of the support rod in the lateral direction (in the direction perpendicular to the axial direction of the support rod). When the airflow enters the air outlet channel from the air inlet 11 in the vertical direction and flows through the blade 22, the airflow first flows through the lower surface of the blade segment 221 below the air outlet device, and then flows along the lower surface of the blade segment 221 to the lower surface of the blade segment 221 above the air outlet device, so that the airflow is turned from the air inlet 11 to the air outlet 12 along an obtuse angle. In this way, the airflow can be prevented from having a sudden angle change when it flows from the air inlet 11 to the blade 22, which greatly reduces the vortex generated by the airflow at the blade 22, thereby making the airflow flow more smoothly and avoiding the air outlet device from generating a large noise.

[0049] Specifically, in the embodiment of the present invention, by providing two blade segments 221, the flow guidance requirement in the case where the air outlet device outlets air both at the front and rear sides can be met.

[0050] In the embodiment of the present invention, the number of the blades 22 may be three to ten. Preferably, the number of the blades 22 is five.

[0051] like Figure 6a As shown, in the embodiment of the present invention, an angle θ is formed between the two blade segments 221 , and the angle θ satisfies the following formula: 140°≤θ≤155°.

[0052] Through the above arrangement, the two blade segments 221 can be smoothly connected while ensuring good flow-conducting ability. In the process of airflow flowing from the air inlet to the air outlet, the airflow can flow more smoothly from one blade segment 221 to another blade segment 221, thereby reducing the noise generated by the air outlet device.

[0053] It should be noted that, in the embodiment of the present invention, the angle θ refers to the angle formed by the tangent lines at the ends of the two blade segments 221 in the vertical plane.

[0054] Preferably, in the embodiment of the present invention, the angle θ is set to 150°. In this way, the two blade segments 221 can be better connected smoothly, the resistance of the airflow can be reduced, and the noise of the air outlet device can be reduced.

[0055] Preferably, if Figure 6b and 6c As shown, 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 as to better guide the airflow.

[0056] like Figure 6a As shown, in the embodiment of the present invention, the blade segment 221 has a guide surface 223 , and the two guide surfaces 223 of the two blade segments 221 are tangentially connected.

[0057] In the above arrangement, by connecting the two blade segments 221 tangentially, the two guide surfaces 223 can be smoothly connected, so that the airflow can flow more smoothly from one guide surface 223 to the other guide surface 223, thereby reducing the noise generated by the airflow.

[0058] Preferably, in the embodiment of the present invention, the blade segment 221 is an arc-shaped plate, and the guide surface 223 is a curved surface. Through the above arrangement, when the airflow passes through the blade 22, the arc-shaped blade 22 can pre-guide the airflow, so that the airflow at the air outlet 12 can have a downward flow tendency through the blade 22, so that when the lower airflow blows to a distance, as the distance increases, the airflow will gradually rise, so that the airflow can reach the user's position directly, which can effectively avoid the uneven airflow caused by the airflow at the air outlet 12 floating upward, thereby making the air outlet device more uniform.

[0059] It should be noted that, in the embodiment of the present invention, the two guide surfaces 223 are tangentially connected, which means that the extension surfaces of the two guide surfaces 223 facing one end of the connecting portion 222 are tangential.

[0060] like Figures 2a to 4c As shown, in an embodiment of the present invention, the air outlet 12 includes a first air outlet 121 and a second air outlet 122 which are correspondingly arranged on opposite sides of the air duct shell 10, and the air outlet device also includes a first baffle 13 which can be opened and closed at the first air outlet 121 and a second baffle 14 which can be opened and closed at the second air outlet 122.

[0061] In the above arrangement, by opening the first baffle 13 and closing the second baffle 14, air can be discharged from the first air outlet 121; by opening the second baffle 14 and closing the first baffle 13, air can be discharged from the second air outlet 122; by opening the first baffle 13 and the second baffle 14, air can be discharged from both sides of the air outlet device, so that the heat source can be cooled more effectively, and the wind blown out of the air outlet device can also be effectively directed toward the heat source.

[0062] like Figures 2a to 4c As shown, in the embodiment of the present invention, the air outlet device further includes a detection device 30, a controller and a plurality of driving parts 40. The detection device 30 is arranged on the outer wall surface of the air duct shell 10, and the detection device 30 is used to detect the angle between the first air outlet 121 and the second air outlet 122 and the heat source; the controller is connected to the detection device 30; the plurality of driving parts 40 are connected to the first baffle 13 and the second baffle 14 correspondingly, and the driving parts 40 are connected to 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.

[0063] With the above settings, Figure 2a to Figure 2cAs shown, when the front side of the air outlet device is discharging air, the driving unit 40 located at the front side drives the first baffle 13 to open, and the driving unit 40 located at the rear side drives the second baffle 14 to close, so that the front side of the air outlet device is discharging air; Figure 3a to Figure 3c As shown, when the rear side of the air outlet device is required to discharge air, the driving unit 40 located at the rear side drives the second baffle 14 to open, and the driving unit 40 located at the front side drives the first baffle 13 to close, so that the rear side of the air outlet device discharges air; Figures 4a to 4c As shown, when air needs to be discharged from both the front and rear sides of the air outlet device, the two driving parts 40 drive the first baffle 13 and the second baffle 14 to be in the open position, so that air can be discharged from both the front and rear sides of the air outlet device.

[0064] Preferably, in the embodiment of the present invention, the number of the driving parts 40 is set to two, and the two driving parts 40 are respectively arranged in a one-to-one correspondence with the first baffle 13 and the second baffle 14 .

[0065] Specifically, in the embodiment of the present invention, the detection device 30 can detect the direction of the heat source and the surface temperature of the heat source. The detection device feeds back the detected signal to the controller, and the controller controls the driving unit 40 to control the opening and closing of the first baffle 13 and the second baffle 14, thereby controlling the front side air outlet or the rear side air outlet of the air outlet device.

[0066] Preferably, in an embodiment of the present invention, the wind direction can be changed by continuously adjusting the rotation angle of the blade 22, so that the air outlet device has the function of sweeping the wind at multiple angles. In this way, in the air outlet channel, the blade segment 221 located at the bottom can pre-guide the airflow, and the blade segment 221 located at the top can guide and sweep the air.

[0067] According to another aspect of the present invention, an embodiment of the present invention provides a fan. The fan includes a base, a fan located in the base, and the above-mentioned air outlet device connected to the base. Through the above-mentioned arrangement, the wind generated by the fan can be blown out through the air outlet device.

[0068] It should be noted that the fan of the embodiment of the present invention has all the advantages of the above-mentioned air outlet device, which will not be described in detail here.

[0069] like Figure 5a to Figure 5c As shown, in an embodiment of the present invention, the air outlet device also 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 support rod 21, and the adjusting motor 50 is used to adjust the angle β between the blade 22 and the horizontal plane; the adjusting motor 50 and the fan are both connected to the controller, and the controller adjusts the angle β according to the rotation speed of the fan.

[0070] In the above setting, the support rod 21 is moved up and down by adjusting the motor 50, thereby driving the blade 22 to rotate to a suitable angle, and the air flow is guided through the blade 22 at a suitable angle. In this way, the flow field in the air outlet channel can be smoother, thereby reducing aerodynamic noise. When the blade 22 is at a suitable angle, the air flow is guided through the blade segment 221 located above, and a uniform air outlet effect can be achieved.

[0071] 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 connecting rod mechanism. This is the existing technology and will not be described in detail here.

[0072] It should be noted that if Figure 6a As shown, in the embodiment of the present invention, the angle β includes an angle β1 and an angle β2. The angle β1 refers to the angle between the tangent line at the end of the blade segment 221 facing the front side and the horizontal plane; the angle β2 refers to the angle between the tangent line at the end of the blade segment 221 facing the rear side and the horizontal plane.

[0073] By adjusting the angle β1, the air outlet from the front side of the air outlet device can be made smoother and more uniform. By adjusting the angle β2, the air outlet from the rear side of the air outlet device can be made smoother and more uniform.

[0074] In the above arrangement, according to the rotation speed of the fan, the angle β1 and / or the angle β2 are varied within a certain angle range, so that the air outlet device can achieve the purpose of sweeping air at multiple angles.

[0075] like Figures 2a to 2c As shown, in the embodiment of the present invention, when the air is discharged from the front side of the air outlet device, the angle β1 can be adjusted by the support rod 21 and the adjustment motor 50, and when the fan of the fan is at different speeds, the angle β1 corresponds to different angle ranges. When the speed of the fan is greater than or equal to 1500rpm and less than or equal to 2500rpm, the angle β1 can be controlled to change between -5° and 5°; when the speed of the fan is greater than or equal to 2500rpm and less than or equal to 3500rpm, the angle β1 is controlled to change between 0° and 8°; when the speed of the fan is greater than or equal to 3500rpm and less than or equal to 5000rpm, the angle β1 is controlled to change between 5° and 15°, so that the angle β1 can be changed in the optimal orientation at the corresponding speed, thereby improving the smoothness and uniformity of the air outlet of the air outlet device, and the changed angle β1 can achieve better wind sweeping. It should be noted that when the angle β1 changes, the angle β2 between the blade segment 221 at the rear side and the horizontal plane also changes accordingly.

[0076] like Figures 3a to 3cAs shown, in the embodiment of the present invention, when the air is discharged from the rear side of the air outlet device, the angle β2 can be directly adjusted by the support rod 21 and the adjustment motor 50, and when the fan of the fan is at different speeds, the angle β2 corresponds to different angle ranges. When the speed of the fan is greater than or equal to 1500rpm and less than or equal to 2500rpm, the angle β2 can be adjusted between -5° and 5°; when the speed of the fan is greater than or equal to 2500rpm and less than or equal to 3500rpm, the angle β2 can be adjusted between 0° and 8°; when the speed of the fan is greater than or equal to 3500rpm and less than or equal to 5000rpm, the angle β2 can be adjusted between 5° and 15°. In this way, the angle β2 can be changed in the optimal orientation at the corresponding speed, thereby improving the smoothness and uniformity of the air outlet of the air outlet device, and the changing angle β2 can achieve better multi-angle wind sweeping.

[0077] like Figures 4a to 4c As shown, in an embodiment of the present invention, when air is discharged from both the front and rear sides of the air outlet device, the angles of angle β1 and angle β2 can be adjusted by the support rod 21 and the adjustment motor 50 to ensure that the initial angle β1=β2=165°, and β1 is adjusted to vary between 150° and 180°, thereby achieving air discharge from both the front and rear sides of the air outlet device, and achieving the effect of sweeping air up and down.

[0078] Preferably, in an embodiment of the present invention, the detection device 30 includes a temperature sensor for detecting the temperature of the heat source and an angle sensor for detecting the angle between the heat source and the air outlet 12. The detection device 30 can be an infrared heat source sensor or a camera acquisition front end, etc. As long as it can identify the orientation of the heat source and detect the temperature of the heat source, it can be set as the detection device 30.

[0079] like Figure 1 As shown, in the embodiment of the present invention, the fan further comprises a rotating seat 2 located between the base and the air outlet device, and the rotating seat 2 is rotatably arranged relative to the base.

[0080] Through the above arrangement, the rotating seat 2 can be rotated to adjust the angle of the fan's air outlet 12 relative to the heat source, so that the fan can blow air toward the heat source more accurately, thereby achieving the purpose of rapid cooling.

[0081] like Figure 1 As shown, in an embodiment of the present invention, the air duct shell 10 includes two shells arranged opposite to each other and a support portion connected to the shells, the support portion is arranged between the two shells, the two shells and the support portion form a hollow structure, and the shell has an air outlet channel and an air outlet 12.

[0082] Through the above arrangement, the hollow shell can form an air outlet channel, so that the airflow can better enter the air outlet channel from the air inlet 11 and blow out from the air outlet 12, and the interior of the shell can form a accommodating space for accommodating the blades 22 and the support rod 21.

[0083] According to another aspect of the present invention, an embodiment of the present invention provides a method for controlling a fan, and the control method controls the above-mentioned fan.

[0084] like Figure 7 As shown, in an embodiment of the present invention, the air outlet 12 includes a first air outlet 121 and a second air outlet 122 which are correspondingly arranged on opposite sides of the air duct shell 10, and the control method includes: step S10: determining the angle X1 between the first air outlet 121 and the heat source and the angle X2 between the second air outlet 122 and the heat source; step S20: determining whether air is discharged from the first air outlet 121 or the second air outlet 122 according to the above-mentioned angles X1 and X2.

[0085] In the above technical solution, the size of the angles X1 and X2 is detected by the detection device 30, so as to select the first air outlet 121 or the second air outlet 122 for air discharge. In this way, the fan can blow air toward the heat source better, and selecting one of the two air outlets 12 for air discharge can also avoid energy waste.

[0086] 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 first.

[0087] like Figure 8 As shown, in an embodiment of the present invention, the control method also includes a first judgment step S21 of judging whether the angle X1 is greater than or equal to the angle X2, if so, executing step S22 of discharging air from the second air outlet 122, if not, executing step S23 of discharging air from the first air outlet 121.

[0088] In the above technical scheme, when the angle X1 is greater than the angle X2, that is, the angle of the rear air outlet 12 (that is, the second air outlet 122) is smaller relative to the heat source, so that the second air outlet 122 is selected to discharge air, so that the air can be better blown toward the heat source; when the angle X1 is less than the angle X2, that is, the angle of the front air outlet 12 (that is, the first air outlet 121) is smaller relative to the heat source, so that the first air outlet 121 is selected to discharge air, so that the air can be better blown toward the heat source; when the angle X1 is equal to the angle X2, the second air outlet 122 can be directly selected to discharge air. Of course, in an alternative embodiment, when the angle X1 is equal to the angle X2, the first air outlet 121 can also be selected to discharge air.

[0089] At this time, no matter which air outlet 12 is selected for air discharge, the fan selects the maximum fan speed for blowing air.

[0090] like Figure 8 As shown, in the embodiment of the present invention, there is an angle β between the blade 22 and the horizontal plane. After step S20, the control method further includes an adjustment step S25 of adjusting the angle β according to the rotation speed of the fan.

[0091] In the above technical solution, after determining that the first air outlet 121 or the second air outlet 122 is discharging air, the angle β between the blade 22 and the horizontal plane is adjusted by the speed of the fan, so that the airflow can flow more smoothly along the blade 22, and the air blown out by the air outlet device can be more uniform when reaching the heat source, avoiding the air from drifting upward and deviating from the heat source during the flow process. Further, according to the range of the fan speed, the fan can sweep the air more uniformly. It should be noted that in the process of executing the adjustment step S25, the current air outlet 12 is maintained to discharge air (i.e., the air is discharged from the first air outlet 121 or the air is discharged from the second air outlet 122).

[0092] In an embodiment of the present invention, the adjustment step S25 includes: when the rotation speed of the fan is [1500, 2500] rpm, adjusting the angle β between -5° and 5°; when the rotation speed of the fan is [2500, 3500] rpm, adjusting the angle β between 0° and 8°; when the rotation speed of the fan is [3500, 5000] rpm, adjusting the angle β between 5° and 15°.

[0093] The angle β in the above-mentioned adjustment step S25 refers to angle β1 and angle β2. When the air is discharged from the front side of the air outlet device, the angle β1 can be adjusted according to the speed of the fan. When the air is discharged from the rear side of the air outlet device, the angle β2 can be adjusted according to the speed of the fan. This is consistent with the method of adjusting the above-mentioned angle β of the air outlet device and will not be repeated.

[0094] like Figure 8 As shown, in an embodiment of the present invention, after step S20, the control method further includes: step S30: rotating the rotating base 2 of the fan; step S40: a second judgment step of judging whether the angle X1 or the angle X2 is equal to zero, if yes, executing step S50 of locking the rotating base 2 on the base; if not, repeating step S30.

[0095] In the above technical solution, after determining that the first air outlet 121 or the second air outlet 122 is discharging air, the fan's air outlet 12 can be adjusted to blow air toward the heat source by adjusting the rotating seat 2, thereby providing the user with a better experience, and by judging in real time whether the angle X1 or the angle X2 is equal to zero, that is, judging in real time whether the opened air outlet 12 is aligned with the heat source, if the opened air outlet 12 is in the same plane as the heat source, the angle of the fan's rotating seat 2 can be maintained, and if the opened air outlet 12 is not in the same plane as the heat source, the rotating seat 2 can be continued to be rotated until the air outlet 12 is aligned with the heat source. In this way, the fan's air outlet can be adaptively followed by the user, thereby increasing the user's comfort experience.

[0096] Through the above steps, even if the heat source keeps changing its position, the wind blown out of the air outlet 12 can reach the position of the heat source.

[0097] like Figure 8 As shown, in an embodiment of the present invention, the control method also includes a third judgment step S60 of judging in real time whether the temperature of the heat source is greater than a preset temperature value. If yes, step S30 is repeated; if not, step S70 of reducing the fan speed and shifting gears is executed.

[0098] In the above technical solution, the temperature of the heat source is judged in real time. When the temperature of the heat source is higher than the preset value, the heat source continues to be cooled by blowing air. When the temperature of the heat source is lower than the preset value, the wind speed can be reduced. In this way, the heat source can be cooled better, the comfort experience of the product can be improved, and energy waste can be further avoided.

[0099] It should be noted that, in the embodiment of the present invention, the gear shift refers to lowering the speed of the fan and entering a standby state after running for a period of time.

[0100] It should be noted that, in the embodiment of the present invention, the preset temperature value is greater than or equal to 37°C and less than or equal to 37.5°C.

[0101] Preferably, in an embodiment of the present invention, the preset temperature value is set to 37.2°C.

[0102] It should be noted that in the embodiments of the present invention, the air outlet device provided in the embodiments of the present invention can realize multi-angle air supply while increasing the uniformity of air outlet and reducing aerodynamic noise. In addition, the above-mentioned fan control method can transform the above-mentioned fan into a smart home, thereby maximizing interpersonal interaction.

[0103] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: by setting two smoothly connected blade segments and rotatably setting them, when the airflow enters the air outlet channel from the air inlet in a vertical direction and flows through the blades, the airflow first flows through the lower surface of the blade segment below the air outlet device, and then flows along the lower surface of the blade segment to the lower surface of the blade segment above the air outlet device, so that the airflow is turned from the air inlet to the air outlet along an obtuse angle. In this way, it is possible to avoid a sudden angle change of the airflow when it flows from the air inlet to the blades, greatly reducing the vortex generated by the airflow at the blades, thereby making the airflow flow smoother and thus avoiding the air outlet device from generating large noise; further, by providing a fan control method, the air outlet of the above-mentioned fan can be made to adaptively follow the user, thereby increasing the user's comfort experience.

[0104] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fan, It is characterized in that It includes a base, a fan located in the base, and an air outlet device connected to the base, wherein the air outlet device includes: An air duct housing (10) comprising an air inlet (11), an air outlet channel connected to the air inlet (11), and an air outlet (12) connected to the air outlet channel; A blade assembly (20) is located in the air duct shell (10), the blade assembly (20) comprising a support rod (21) and a blade (22) arranged on the support rod (21), the blade (22) comprising two blade segments (221) and a connecting portion (222) connecting the two blade segments (221), the connecting portion (222) being rotatably arranged on the support rod (21); The air outlet (12) comprises a first air outlet (121) and a second air outlet (122) which are correspondingly arranged on opposite sides of the air duct shell (10); the air outlet device further comprises a first baffle (13) which is openably and closably arranged at the first air outlet (121) and a second baffle (14) which is openably and closably arranged at the second air outlet (122); The air outlet device also includes: A detection device (30) is arranged on the outer wall surface of the air duct shell (10), and the detection device (30) is used to detect the angle between the first air outlet (121) and the second air outlet (122) and the heat source; A controller connected to the detection device (30); The fan further comprises a rotating seat (2) located between the base and the air outlet device, and the air duct housing (10) comprises two shells arranged opposite to each other, and the two shells are arranged on the rotating seat (2); After determining that the first air outlet (121) or the second air outlet (122) is blowing air, the controller adjusts the rotating seat (2) so that the air outlet (12) of the fan is aimed at the heat source to blow air.

2. The fan according to claim 1, It is characterized in that An included angle θ is formed between the two blade segments (221), and the included angle θ satisfies the following formula: 140°≤θ≤155°.

3. The fan according to claim 1, It is characterized in that The blade segment (221) has a flow guide surface (223), and the two flow guide surfaces (223) of two blade segments (221) are tangentially connected.

4. The fan according to any one of claims 1 to 3, It is characterized in that The air outlet device also includes: A plurality of drive units (40) are connected to the first baffle (13) and the second baffle (14) respectively, and the drive units (40) are connected to 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).

5. The fan according to claim 1, It is characterized in that The detection device (30) comprises a temperature sensor for detecting the temperature of a heat source and an angle sensor for detecting the angle between the heat source and the air outlet (12).

6. The fan according to claim 1, It is characterized in that The controller is located in the base, and the air outlet device further comprises an adjusting motor (50) located in the air duct shell (10), the adjusting motor (50) being connected to the support rod (21), and the adjusting motor (50) being used to adjust an angle β between the blade (22) and a horizontal plane; the adjusting motor (50) and the fan are both connected to the controller, and the controller adjusts the angle β according to a rotation speed of the fan.

7. The fan according to claim 1, It is characterized in that The rotating seat (2) is rotatably arranged relative to the base.

8. The fan according to claim 1, It is characterized in that The air duct shell (10) further comprises a support portion connected to the shell body, the support portion being arranged between the two shell bodies, the two shell bodies and the support portion forming a hollow structure, and the shell body having the air outlet channel and the air outlet (12).

9. A method for controlling a fan, It is characterized in that The control method controls the fan according to any one of claims 1 to 8.

10. The fan control method according to claim 9, It is characterized in that The air outlet (12) comprises a first air outlet (121) and a second air outlet (122) which are correspondingly arranged on two opposite sides of the air duct shell (10), and the control method comprises: Step S10: determining an angle X1 between the first air outlet (121) and the heat source and an angle X2 between the second air outlet (122) and the heat source; Step S20: determining whether to discharge air from the first air outlet (121) or the second air outlet (122) based on the angles X1 and X2.

11. The fan control method according to claim 10, It is characterized in that The control method further comprises a first judging step S21 of judging whether the angle X1 is greater than or equal to the angle X2; if so, executing step S22 of discharging air from the second air outlet (122); if not, executing step S23 of discharging air from the first air outlet (121).

12. The fan control method according to claim 10, It is characterized in that An angle β is formed between the blade (22) and the horizontal plane. After step S20, the control method further comprises an adjustment step S25 of adjusting the angle β according to the rotation speed of the fan.

13. The fan control method according to claim 12, It is characterized in that The adjustment step includes: when the rotation speed of the fan is [1500, 2500] rpm, adjusting the angle β to be between -5° and 5°; when the rotation speed of the fan is [2500, 3500] rpm, adjusting the angle β to be between 0° and 8°; when the rotation speed of the fan is [3500, 5000] rpm, adjusting the angle β to be between 5° and 15°.

14. The method for controlling a fan according to any one of claims 10 to 13, It is characterized in that After step S20, the control method further includes: Step S30: rotating the rotating base (2) of the fan; Step S40: a second determination step of determining whether the angle X1 or the angle X2 is equal to zero; if so, executing step S50 of locking the rotating seat (2) on the base; if not, repeating step S30.

15. The fan control method according to claim 14, It is characterized in that The control method further comprises a third judging step S60 of judging in real time whether the temperature of the heat source is greater than a preset temperature value, if yes, repeating the step S30; if no, executing the step S70 of reducing the fan speed and shifting the gear.

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