Control method of a fan module

Abstract

The application relates to a range hood, a fan module and a control method thereof. The fan module comprises a shell assembly and a fan wheel assembly arranged in the shell assembly. The shell assembly has at least a first air outlet channel and a second air outlet channel. The shell assembly is provided with a first air outlet and a second air outlet. The first end of the first air outlet channel is connected to the fan wheel assembly. The first air outlet is located at the second end of the first air outlet channel. The first end of the second air outlet channel is communicated with the first air outlet channel. The second air outlet is located at the second end of the second air outlet channel. The first air outlet is configured to blow air along a first direction. The second air outlet is configured to blow air along a second direction. The first direction is arranged at an angle with the second direction. That is, the first air outlet and the second air outlet can respectively guide air flow to different directions, thereby increasing the blowing range of the fan module.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of range hood, in particular to a control method of fan module. BACKGROUND

[0002] In modern families, high temperature problems often occur during the cooking process in the kitchen, and the cook needs to endure high temperature during the operation process, especially when cooking in front of the stove. People usually use a fan or install a kitchen air conditioner in the kitchen to reduce the working intensity. However, the kitchen air conditioner is high in cost, and the fan is still a more cost-effective choice for the public.

[0003] In the related art, the fan and the range hood are generally integrated, which is more convenient to use. However, the air outlet of the fan is only arranged on the front panel, and can only blow air to the area opposite to the range hood, so the blowing range is small. SUMMARY

[0004] Therefore, it is necessary to provide a range hood, a fan module and a control method of the fan module aiming at the problem of small blowing range of the fan.

[0005] A fan module of a range hood, the fan module comprising:

[0006] a fan wheel assembly arranged in the housing assembly;

[0007] a housing assembly, the housing assembly having at least a first air outlet channel and a second air outlet channel therein, and a first air outlet and a second air outlet being arranged on the housing assembly;

[0008] wherein a first end of the first air outlet channel is connected to the fan wheel assembly, the first air outlet is arranged at a second end of the first air outlet channel, a first end of the second air outlet channel is connected to the first air outlet channel, the second air outlet is arranged at a second end of the second air outlet channel, the first air outlet is configured to blow air along a first direction, the second air outlet is configured to blow air along a second direction, and the first direction is arranged at an angle with respect to the second direction.

[0009] In one of the embodiments, the fan module comprises a stop structure arranged at the first end of the second air outlet channel, and the stop structure is configured to change the direction of at least part of the air flow so as to make at least part of the air flow flow towards the second air outlet.

[0010] In one of the embodiments, the housing assembly comprises an outer shell having a front wall and at least one side wall connected to the front wall, the first air outlet is arranged on the front wall, and the second air outlet is arranged on the side wall.

[0011] In one embodiment, the front wall is parallel to the axis of the wind turbine assembly and is located at one end of the wind turbine assembly along a first direction.

[0012] In one embodiment, the front wall has side walls on opposite sides, and the air outlets on the two side walls have opposite air outlet directions.

[0013] The wind turbine assembly includes two wind turbines spaced apart along a second direction by a bracket, and each second air outlet is connected to the wind turbine through a corresponding second air outlet channel.

[0014] In one embodiment, the stop structure includes a front panel movably disposed on the housing. The front panel is used to close or open the first air outlet. When the first air outlet is closed, the front panel is used to allow airflow in the first air outlet channel to flow into the second air outlet channel.

[0015] In one embodiment, the stop structure includes a sweeping assembly, the two ends of which are rotatably connected to the housing along the second direction. The sweeping assembly is located inside the first air outlet, and when it rotates, it is used to sweep air in the up-down direction.

[0016] In one embodiment, the air-sweeping assembly includes at least two parallel air-sweeping plates, the two ends of the at least two air-sweeping plates being rotatably connected to the housing along a second direction;

[0017] When the air sweeping plate is parallel to the front panel, the air sweeping assembly is closed, and the air sweeping plate is used to allow part of the airflow in the first air outlet channel to flow into the second air outlet channel; when the air sweeping plate is inclined or perpendicular to the front panel, the air sweeping assembly is opened.

[0018] In one embodiment, the fan module further includes a controller and a human body sensor, the human body sensor being disposed on the housing, and the controller being used to control the airflow from the first air outlet channel and / or the second air outlet channel based on the detection signal from the human body sensor.

[0019] In one embodiment, the human body sensing sensor is provided at the connection position between the front wall and the side wall.

[0020] A method for controlling a fan module includes the following steps:

[0021] Turn on the front air blowing mode;

[0022] Determine whether the human body is in the front or side area. If it is in the front area, maintain the front blowing mode; if it is in the side area, determine the percentage of time spent in the side area.

[0023] If the time spent in the side area is greater than or equal to the first preset time percentage, then the front air outlet mode is turned off and the side air outlet mode is turned on.

[0024] In one embodiment, the control method further includes:

[0025] If the detected human body is located in the lateral region, and the time spent in the lateral region is less than the first preset time percentage;

[0026] The system determines whether the percentage of time the human body spends in the side area and the percentage of time it spends in the front area are both greater than the second preset percentage. If so, the system simultaneously activates the front and side blowing modes; otherwise, it maintains only the front blowing mode. In the front and side blowing modes, the fan module opens the front panel, closes the air sweeping component, rotates the impeller, and the sum of the first preset percentage and the second preset percentage is 1.

[0027] A range hood includes a range hood body and a fan module, wherein the fan module is disposed on the range hood body.

[0028] In the aforementioned range hood, fan module, and control method, when the impeller assembly rotates, the airflow flows along the first air outlet channel to be directly discharged through the first air outlet, or at least part of the airflow flows through the first air outlet channel into the second air outlet channel to be discharged through the second air outlet. The first direction and the second direction are set at an angle. That is, through the guiding effect of the first and second air outlet channels, the airflow can be directed in different directions through the first and second air outlets respectively, thereby increasing the blowing range of the fan module and improving the user's comfort experience. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of a range hood in one embodiment.

[0030] Figure 2 This is a schematic diagram of the internal structure of a fan module in one embodiment.

[0031] Figure 3 This is a schematic diagram of the airflow direction of the fan module in the side air outlet mode in one embodiment.

[0032] Figure 4 This is a schematic diagram of the airflow direction of the fan module in front and side air outlet modes in one embodiment.

[0033] Figure 5 This is a schematic diagram of the external structure of the fan module when the front panel is closed in one embodiment.

[0034] Figure 6This is a schematic diagram of the external structure of the fan module when the front panel is open and the air-sweeping component is closed, according to one embodiment.

[0035] Figure 7 This is a schematic diagram of the external structure of the fan module when the front panel is open and the air-sweeping component is turned on, according to one embodiment.

[0036] Figure 8 This is a flowchart of a control method for a fan assembly in one embodiment.

[0037] Reference numerals: 10, Fan module; 100, Housing assembly; 110, Outer shell; 111, Front wall; 112, Side wall; 113, Top wall; 114, Filter; 115, Air inlet; 120, Front panel; 121, Linkage assembly; 122, Lifting motor; 123, Support plate; 124, Through hole; 130, First air outlet channel; 131, First air outlet; 140, Second air outlet channel; 141, Second air outlet; 200, Fan wheel assembly; 210, Fan wheel; 220, Dual-axis motor; 300, Sweeping assembly; 310, Sweeping plate; 400, Air outlet assembly; 500, Human body sensor; 20, Range hood body. Detailed Implementation

[0038] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0039] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0040] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0044] See Figures 1-7An embodiment of this application provides a fan module 10, which includes a housing assembly 100 and a fan wheel assembly 200 disposed within the housing assembly 100. The housing assembly 100 has at least a first air outlet 131 and a second air outlet 141, and the housing assembly 100 has at least a first air outlet channel 130 and a second air outlet channel 140. The first end of the first air outlet channel 130 leads to the fan wheel assembly 200, the first air outlet 131 is located at the second end of the first air outlet channel 130, the first end of the second air outlet channel 140 is connected to the first air outlet channel 130, and the second air outlet 141 is located at the second end of the second air outlet channel 140. The first air outlet 131 is configured to discharge air along a first direction, and the second air outlet 141 is configured to discharge air along a second direction, wherein the first direction and the second direction are set at an angle.

[0045] With this configuration, when the impeller assembly 200 rotates, the airflow flows along the first air outlet channel 130, allowing it to exit directly through the first air outlet 131, or at least part of the airflow flows through the first air outlet channel 130 into the second air outlet channel 140, exiting through the second air outlet 141. The first and second directions are set at an angle. That is, through the guiding effect of the first and second air outlet channels 130 and 140, the airflow can be directed in different directions through the first and second air outlets 131, thereby increasing the blowing range of the fan module 10.

[0046] Specifically, the angle between the first direction and the second direction can be any value within the range of 0 degrees to 180 degrees. For example, when the stove is set up close to the wall, the first direction is perpendicular to the second direction, with the first direction being the front of the stove and the second direction being the side of the stove; or when the stove is not set up close to the wall, the angle between the first direction and the second direction is greater than 145 degrees, with the first direction being the front of the stove and the second direction being the right rear of the stove.

[0047] Furthermore, the fan module 10 includes a stop structure disposed at the first end of the second air outlet channel 140. The stop structure is used to change at least part of the airflow direction so that at least part of the airflow in the first air outlet channel 130 flows into the second air outlet channel 140.

[0048] With this configuration, when the impeller assembly 200 rotates, the airflow first enters the first air outlet channel 130, and then, due to the blocking effect of the stop assembly, at least part of the airflow changes direction to enter the second air outlet channel 140, and is then blown out from the second air outlet 141 in the second direction. That is, this application does not require the addition of an extra impeller assembly; the blowing range can be increased simply by changing the airflow direction.

[0049] In other embodiments, it is also possible to eliminate the need for a stop structure and directly install a fan assembly at the first end of the second air outlet channel to change the airflow direction within the first air outlet channel.

[0050] Furthermore, the housing assembly 100 includes a housing 110 having a front wall 111 and at least one side wall 112 connected to the front wall 111, a first air outlet 131 located on the front wall 111, and a second air outlet 141 located on the side wall 112.

[0051] With this configuration, when the user works on the side of the fan module 10, a portion of the airflow passes through the second air outlet 141 on the side wall 112 via the second air outlet 140, thereby achieving cooling of the side. In other words, the fan module 10 of this application can not only blow air forward but also to the side, improving the user's comfort experience.

[0052] The number of side walls 112 can be one or two. Taking the example of side walls 112 being provided on the left and right sides of the front wall 111, and each of the two side walls 112 having a second air outlet 141, when the user works on the left or right side of the stove, air can be blown through the two air outlets on the left and right sides respectively. That is, this application can achieve a wide range of air blowing of 270 degrees, with good air blowing effect.

[0053] The front wall 111 is parallel to the axis of the wind turbine assembly 200, and the front wall 111 is located at one end of the wind turbine assembly 200 along the first direction.

[0054] Furthermore, the front wall 111 is parallel to the axis of the impeller assembly 200, and the front wall 111 is located at one end of the impeller assembly 200 along the first direction, meaning that the impeller assembly 200 mainly exhausts air through the first air outlet 131 on the front wall 111. Since the temperature in front of the stove is the highest, the impeller assembly 200 mainly exhausts air through the first air outlet 131 on the front wall 111 to ensure that users can get a better cooling effect when operating in front of the stove.

[0055] Specifically, the front wall 111 has side walls 112 on opposite sides, and the second air outlets 141 on the two side walls 112 have opposite air outlet directions; the impeller assembly 200 includes two impellers 210 spaced apart along the second direction by a bracket, and each second air outlet 141 is connected to the impeller 210 through a corresponding second air outlet channel 140.

[0056] The fan module 10 includes two coaxially arranged impellers 210. Each impeller 210 can be a cross-flow fan blade, which offers a gentler, weaker, and more uniform airflow, making it more comfortable to use at close range than an axial fan. A bracket is positioned between the two impellers 210, and a dual-axis motor 220 is mounted on the bracket. The dual-axis motor 220 is connected to both impellers 210 simultaneously, driving both impellers 210 to rotate at the same time. The two impellers 210 are spaced apart by the bracket, meaning the two second air outlet channels 140 are not connected. The second air outlets 141 on the two side walls 112 have opposite airflow directions, with one second air outlet 141 located at the left end of its corresponding second air outlet channel 140 and the other at the right end, ensuring that airflow is evenly distributed between the left and right ends of the fan module 10.

[0057] Combination Figures 5-6 In some embodiments of this application, the stop structure includes a front panel 120, which is movably disposed on the housing 110. The front panel 120 is used to close or open the first air outlet 131. When the first air outlet 131 is closed, the front panel 120 is used to allow the airflow in the first air outlet channel 130 to flow into the second air outlet channel 140.

[0058] This design serves two purposes. First, when air is not needed from the first air outlet 131, the front panel 120 closes the first air outlet 131, improving the aesthetics of the fan module 10 and preventing dust or oil fume contamination. Second, when the front panel 120 closes the first air outlet 131, it blocks the airflow. In this case, the air blown from the impeller 210 is deflected in a second direction by the obstruction of the front panel 120, allowing it to exit from the second air outlet 141. This ensures sufficient airflow at the second air outlet 141 even when only it is open.

[0059] In some embodiments, combined with Figure 2 The front panel 120 is vertically movable relative to the outer casing 110. Support plates 123 are respectively provided on both sides of the casing near the left and right side walls 112. A lifting motor 122 is mounted on the support plate 123, which drives the linkage assembly 121 to rotate, thereby raising and lowering the front panel 120. When the linkage assembly 121 rotates, it moves the front panel 120 upwards, thus opening the first air outlet 131. When the linkage returns to its original position, it moves the front panel 120 downwards, thus closing the first air outlet 131. A through hole 124 is provided on the support plate 123 to allow the second air outlet channel 140 to communicate with the outside.

[0060] In some other embodiments, the front panel can be rotatably connected to the outer casing. For example, the front panel has a rotating shaft extending in a second direction at its upper part, with both ends of the rotating shaft rotatably connected to the outer casing. A motor is provided on the outer casing to drive the front panel to rotate. When the front panel rotates to a horizontal position, the first air outlet opens; when the front panel rotates to a vertical position, the first air outlet closes.

[0061] In some embodiments of this application, the stop structure includes a sweeping assembly 300. The two ends of the sweeping assembly 300 along the second direction are respectively rotatably connected to the housing. The sweeping assembly 300 is located inside the first air outlet 131. When the sweeping assembly 300 rotates, it is used to sweep air along the up and down direction to increase the air outlet range of the first air outlet 131 in the vertical direction.

[0062] Furthermore, in combination Figure 6 and Figure 7 The air-sweeping assembly 300 includes at least two parallel air-sweeping plates 310, which are rotatably connected to the housing at both ends along a second direction. When the air-sweeping plates 310 are parallel to the front panel 120, the air-sweeping assembly 300 is closed, and the air-sweeping plates 310 are used to allow part of the airflow in the first air outlet channel 130 to flow into the second air outlet channel 140. When the air-sweeping plates 310 are inclined or perpendicular to the front panel 120, the air-sweeping assembly 300 is opened.

[0063] Combination Figure 6 When the first air outlet 131 is closed, the air sweeping assembly 300 is closed. At this time, the air sweeping plate 310 is parallel to the front panel 120, that is, the air sweeping plate 310 is in a vertical position to prevent interference between the front panel 120 and the air sweeping plate 310 when the front panel 120 is closed. Figure 7 When the first air outlet 131 is opened, the air sweeping assembly 300 is activated. When the air guide assembly rotates, it drives the air sweeping plate 310 to rotate, thereby changing the air direction. At the same time, when air is discharged from the first air outlet 131 and the second air outlet 141, the air sweeping plate 310 can be closed to block part of the airflow. This causes part of the airflow to be blown out from the second air outlet 141 in a second direction, while part of the airflow is blown out from the gap between the air sweeping plate 310 and the first air outlet 131 in a first direction, thus simultaneously achieving air discharge from the first air outlet 131 and the second air outlet 141.

[0064] Of course, the fan module 10 also includes left and right air guide components. The left and right air guide components are located at the end of the first air outlet 131 near the impeller 210, that is, simultaneously located in the first air outlet channel 130 and the second air outlet channel 140. On the one hand, they are used to realize the left and right sweeping of the first air outlet 131. On the other hand, when air needs to be discharged through the second air outlet 141, the left and right air guide components 300 are used to guide part of the airflow of the impeller 210 to the left and right second air outlets 141 respectively, so as to enhance the air volume of the second air outlet 141.

[0065] In some embodiments of this application, the fan module 10 has a front air outlet mode and a side air outlet mode. In the front air outlet mode, the front panel 120 moves to open the first air outlet 131, the air sweeping assembly 300 is activated, and the impeller assembly 200 is activated; combined with Figure 3 When the fan module 10 is in side air outlet mode, the front panel 120 moves to close the first air outlet 131, the air sweeping assembly 300 is turned off, and the impeller assembly 200 is turned on.

[0066] Furthermore, in combination Figure 4 The fan module 10 has a front and side air outlet mode. When the fan module 10 is in the front and side air outlet mode, the front panel 120 moves to open the first air outlet 131, the air sweeping assembly 300 is closed, and the impeller assembly 200 is turned on.

[0067] Combination Figure 1 In some embodiments of this application, the fan module 10 further includes a controller and a human body sensor 500. The human body sensor 500 is disposed on the housing assembly 100. The controller is used to control the airflow from the first air outlet channel 130 and / or the second air outlet channel 140 according to the detection signal of the human body sensor 500.

[0068] The controller can be a microprocessor or an ASIC. The human body sensor 500 can be a pyroelectric infrared sensor, an ultrasonic sensor, or a microwave radar sensor.

[0069] Specifically, the human body sensor 500 is located at the connection point between the front wall 111 and the side wall 112, thereby detecting whether a human body is in the front or side area.

[0070] Alternatively, human body sensors 500 can be installed on the front wall 111 and the side wall 112 respectively, and the human body sensors 500 on the front wall 111 and the side wall 112 can be connected to the controller signal.

[0071] Combination Figure 2 In some embodiments, the fan module 10 further includes an air outlet assembly 400, which is installed in the first air outlet channel 130. The air outlet assembly 400 may be a grille for safety protection.

[0072] Combination Figure 8 An embodiment of this application also provides a control method for a fan module 10, comprising the following steps:

[0073] Turn on the front air blowing mode;

[0074] Determine whether the area where the human body is located is the front area or the side area. If it is the front area, maintain the front blowing mode; if it is the side area, determine whether the time percentage P in the side area is greater than or equal to the first preset time percentage N.

[0075] If the time percentage P in the side area is greater than or equal to the first preset time percentage N, then the front air outlet mode is turned off and the side air outlet mode is turned on; where the time percentage refers to the ratio of the total time in the area to the total running time.

[0076] When the fan module 10 is in front blowing mode, the front panel 120 is open, the air sweeping component 300 is turned on, and the impeller 210 rotates; when the fan module 10 is in side blowing mode, the front panel 120 is closed, the air sweeping component 300 is turned off, and the impeller 210 rotates.

[0077] Specifically, before turning on the front air blower, the process includes a program self-test. This self-test determines whether the operation is normal based on feedback from abnormal current or other means. If the program self-test is normal, the subsequent steps are performed; if the program self-test is abnormal, the machine is shut down directly.

[0078] When in use, after the user turns on the fan, the program first performs a self-test. If the self-test is normal, the front blowing mode is turned on. In the front blowing mode, the front panel 120 is opened, the air sweeping component 300 is turned on, and the impeller 210 rotates. That is, the air blown out from the impeller 210 can pass through the air sweeping component 300 and be blown out from the first air outlet 131. During this process, the human body sensor 500 detects the area where the human body is located. If the human body is detected to be in the front area, the front air blowing mode continues. If the human body is detected to be in the side area, the percentage of time P spent in the side area is determined. Here, the percentage of time P spent in the side area is the cumulative time spent in the side area divided by the total running time, and the percentage of time Q spent in the front area is the cumulative time spent in the front area divided by the total running time. If the percentage of time P spent in the side area is greater than or equal to the first preset percentage of time N, the front air blowing mode is turned off and the side air blowing mode is turned on. Here, the first preset percentage of time N is preset in the controller, and the first preset percentage of time N is greater than 50%, for example, the first preset percentage of time N is 60%, 70%, or 80%.

[0079] Taking a preset time period N of 60% as an example, when the human body sensor 500 detects a human body in the side area, and the time P spent in the side area is greater than or equal to 60%, it indicates that the human body spends most of its time in the side area. At this time, the sweeping blades close, the panel lowers and closes, and the impeller 210 continues to operate normally. When the airflow passes through the air outlet, it is sealed and blocked by the front panel 120. At the same time, the sweeping blades are in a vertical position, and the airflow is guided by the sweeping blades and blown out through the side air outlets on the left and right sides, realizing the cooling of areas other than the front of the stove. This meets the user's needs for effective cooling in the pre-cooking preparation area and the post-meal cleaning area, improving the efficiency and user experience of the fan module.

[0080] Furthermore, control methods also include:

[0081] If the detected human body is located in the lateral region, and the duration P in the lateral region is less than the first preset duration N;

[0082] Then it is determined whether the time percentage P of the human body in the side area and the time percentage Q of the front area are both greater than the second preset time percentage 1-N. If so, the front and side blowing modes are turned on at the same time; if not, only the front blowing mode is maintained. When the fan module 10 is in the front and side blowing modes, the front panel 120 is opened, the air sweeping component 300 is closed, the impeller 210 rotates, and the sum of the first preset time percentage N and the second preset time percentage 1-N is 1.

[0083] Taking the second preset duration of 40% as an example, if the activity time of the human body in the front area and the side area both account for more than 40%, it means that the human body is moving back and forth in the front area and the side area. At this time, the front and side blowing modes can be turned on at the same time. Specifically, the air sweeping plate 310 rotates to be parallel to the front panel 120, the panel opens, the air sweeping plate 310 blocks part of the airflow, so that part of the airflow is blown out from the second air outlet 141 along the second direction, and at the same time, part of the airflow is blown out from the gap between the air sweeping plate 310 and the first air outlet 131 along the first direction, thereby realizing front and side blowing at the same time.

[0084] Furthermore, the side area includes the left side area and the right side area, and the side air outlet mode includes the left side air outlet mode and the right side air outlet mode. The time spent by the human body in the left side area and the right side area can be determined by the above method, so as to activate the left side air outlet mode and the right side air outlet mode respectively.

[0085] It should be noted that the two axes of the dual-axis motor 220 can be controlled independently. When a person spends a long time on the left side of the stove, such as when preparing food or washing dishes, the left motor shaft can be turned on independently to drive the left cross-flow fan blades, thereby achieving airflow from the left side, which reduces energy consumption and noise. Similarly, when a person spends a long time on the right side, the right motor shaft can be turned on independently to drive the right cross-flow fan blades, thereby achieving airflow from the right side.

[0086] This application uses a human body sensor to obtain the user's location and duration, and then uses a controller to adjust the state of the front panel 120 and the air sweeping blades to achieve switching between front air outlet mode, side air outlet mode, and front and side air outlet modes. This allows the air outlet direction to cover a 270° circumference range, breaking the problem of air sweeping angle limitation, greatly improving user comfort, and also improving the product's usage efficiency.

[0087] Combination Figure 1 An embodiment of this application also provides a range hood, including a range hood body 20 and a fan module 10, wherein the fan module 10 is disposed on the range hood body 20.

[0088] The fan module 10 has an air inlet 115, which is located on the smoke-absorbing side away from the range hood body 20. The air inlet 115 is equipped with a filter 114 to prevent oil fumes from entering the fan module 10 and damaging the impeller 210 and motor. Furthermore, the filter 114 also serves as a safety feature; the filter 114 can be a metal mesh. Specifically, the air inlet 115 is located on the top wall 113 of the outer casing 110.

[0089] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0090] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A control method for a fan module, characterized in that, The fan module includes: A housing assembly, wherein the housing assembly has at least a first air outlet channel and a second air outlet channel, and the housing assembly has a first air outlet and a second air outlet; The wind turbine assembly is disposed within the housing assembly; Wherein, the first end of the first air outlet channel leads to the wind turbine assembly, the first air outlet is located at the second end of the first air outlet channel, the first end of the second air outlet channel is connected to the first air outlet channel, the second air outlet is located at the second end of the second air outlet channel, the first air outlet is configured to discharge air along a first direction, the second air outlet is configured to discharge air along a second direction, and the first direction and the second direction are set at an angle; The control method includes the following steps: Turn on the front air blowing mode; Determine whether the area where the human body is located is the front area or the side area. If it is the front area, maintain the front blowing mode; if it is the side area, determine whether the time percentage in the side area is greater than or equal to the first preset time percentage. If so, turn off the front air outlet mode and turn on the side air outlet mode; Among them, the time percentage refers to the ratio of the total time in the region to the total operating time; If the detected human body is located in the lateral region, and the time spent in the lateral region is less than the first preset time percentage; Then it is determined whether the proportion of time spent in the side area and the proportion of time spent in the front area are both greater than the second preset time proportion. If so, the front and side blowing modes are turned on at the same time; if not, only the front blowing mode is maintained. The sum of the first preset time proportion and the second preset time proportion is 1.

2. The control method for the fan module according to claim 1, characterized in that, The fan module includes a stop structure disposed at the first end of the second air outlet channel. The stop structure is used to change the direction of at least part of the airflow so that at least part of the airflow in the first air outlet channel flows into the second air outlet channel.

3. The control method for the fan module according to claim 2, characterized in that, The housing assembly includes an outer shell having a front wall and at least one side wall connected to the front wall, a first air outlet located on the front wall, and a second air outlet located on the side wall.

4. The control method for the fan module according to claim 3, characterized in that, The front wall has side walls on opposite sides, and the air outlets on the two side walls have opposite air outlet directions. The wind turbine assembly includes two wind turbines spaced apart along a second direction by a bracket, and each second air outlet is connected to the wind turbine through a corresponding second air outlet channel.

5. The control method for the fan module according to claim 3, characterized in that, The stop structure includes a front panel, which is movably disposed on the housing. The front panel is used to close or open the first air outlet. When the first air outlet is closed, the front panel is used to allow the airflow in the first air outlet channel to flow into the second air outlet channel.

6. The control method for the fan module according to claim 5, characterized in that, The stop structure includes a sweeping assembly, the two ends of which are rotatably connected to the housing along the second direction, and the sweeping assembly is located inside the first air outlet.

7. The control method for the fan module according to claim 6, characterized in that, The air-sweeping assembly includes at least two parallel air-sweeping plates, and the two ends of the at least two air-sweeping plates are rotatably connected to the housing along the second direction. When the air sweeping plate is parallel to the front panel, the air sweeping assembly is closed, and the air sweeping plate is used to allow part of the airflow in the first air outlet channel to flow into the second air outlet channel; when the air sweeping plate is inclined or perpendicular to the front panel, the air sweeping assembly is opened.

8. The control method for the fan module according to claim 3, characterized in that, The fan module also includes a controller and a human body sensor. The human body sensor is disposed on the housing. The controller is used to control the airflow from the first air outlet channel and / or the second air outlet channel according to the detection signal of the human body sensor.

9. The control method for the fan module according to claim 8, characterized in that, The human body sensor is provided at the connection point between the front wall and the side wall.

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