Fan assembly, range hood, and control method of range hood

Abstract

The present invention provides a fan assembly, a range hood, and a control method for the range hood. The fan assembly includes a driving part; an impeller, the driving part is connected to the impeller, and the driving part is used to drive the impeller to rotate; a cooling device, the cooling device is connected to the driving part, the cooling device has a water inlet system and a water outlet system, after the cooling water from the outside flows into the cooling device through the water inlet system and exchanges heat with the driving part, the cooling water after heat exchange becomes hot water and is discharged out of the cooling device through the water outlet system to reduce the temperature of the driving part. The safety of the fan assembly is improved. The range hood with the fan assembly can always operate in a safe working environment, ensuring the reliability of the range hood and improving the efficiency of fume extraction.

Description

Technical Field

[0001] The present invention relates to the technical field of range hood devices, and more specifically, to a fan assembly, a range hood, and a control method for a range hood. Background Art

[0002] For the range hoods used in the prior art, when the range hood operates for a long time (such as when cooking soup or for other special purposes) or when the weather temperature is too high, it is easy to cause the motor temperature to rise too high, which affects the service life and performance of the motor, and also affects the use safety. In severe cases, it may cause the circuit to burn out and lead to fires. After the range hoods on the market have been used for a certain number of years, the wind wheels will accumulate oil stains and are difficult to clean, which affects the performance of the range hood. In severe cases, it will affect the air volume of the range hood, resulting in the problem that the range hood cannot effectively absorb oil fumes or the oil fume absorption efficiency is too low. Summary of the Invention

[0003] The main object of the present invention is to provide a fan assembly, a range hood, and a control method for a range hood to solve the problem of low efficiency of the range hood in the prior art.

[0004] To achieve the above object, according to one aspect of the present invention, a fan assembly is provided, including: a driving part; a wind wheel, the driving part is connected to the wind wheel, and the driving part is used to drive the wind wheel to rotate; a cooling device, the cooling device is connected to the driving part, the cooling device has a water inlet system and a water outlet system, and after the cooling water from the outside flows into the cooling device through the water inlet system and exchanges heat with the driving part, the cooling water after heat exchange becomes hot water and is discharged out of the cooling device through the water outlet system.

[0005] Further, the cooling device includes: a water storage box, the water storage box has a water inlet and a water outlet, the water outlet system is arranged at the water outlet, the water inlet system includes a water inlet valve, the water inlet valve is connected to the water storage box, and the water inlet valve is used to open or close the water inlet. When the water inlet is in the open position, the cooling water from the outside flows into the water storage box through the water inlet and exchanges heat with the driving part, and the cooling water after heat exchange is discharged out of the cooling device through the water outlet system.

[0006] Further, the water inlet valve is provided with an air inlet hole and an air exhaust hole. When the water storage box stores water, the air exhaust hole exhausts air, and when the water storage box drains water, the air inlet hole intakes air.

[0007] Further, the fan assembly further includes: a central control module; a first detection module, the first detection module is used to detect the information on whether the cooling water in the water storage box is filled to a first preset position, and the central control module is used to receive the information from the first detection module; a first sensing control module, the first sensing control module controls the opening or closing of the air inlet hole and the air exhaust hole, and controls the water inlet valve to open or close the water inlet according to the information received by the central control module from the first detection module.

[0008] Further, the water outlet system includes: a water outlet valve disposed at the water outlet. The water outlet valve includes a first water outlet pipe for discharging the water in the water storage box out of the water storage box. Wherein, the water outlet valve is used to control the conduction or closing of the first water outlet pipe and the water outlet.

[0009] Further, the water outlet valve further includes a second water outlet pipe. The first end of the second water outlet pipe is selectively communicated with the water outlet through the water outlet valve. The second end of the second water outlet pipe is disposed toward the side of the wind wheel. The second water outlet pipe is used to divert the cooling water in the water storage box to the wind wheel for cleaning the wind wheel. The water outlet valve is used to control the conduction or closing of the second water outlet pipe and the water outlet.

[0010] Further, the fan assembly further includes: a central control module; a second detection module for detecting the temperature information of the driving part; a data receiving module for receiving the temperature information detected by the second detection module. The central control module controls the opening or closing of the water inlet by the water inlet valve and the opening or closing of the water outlet by the water outlet system according to the temperature information sent by the data receiving module.

[0011] Further, the water outlet system includes a second sensing control module. The first water outlet pipe and the second water outlet pipe are arranged in parallel. The second sensing control module controls the water outlet valve to independently control the conduction or closing of the first water outlet pipe, and the water outlet valve independently controls the conduction or closing of the second water outlet pipe.

[0012] Further, the driving part is a motor. An annular groove is provided on the housing of the motor. Internal threads are provided on the inner wall surface of the annular groove. External threads matching the internal threads are provided on at least part of the outer peripheral surface of the water storage box.

[0013] Further, the fan assembly further includes: an annular sealing ring disposed at the bottom of the annular groove.

[0014] According to another aspect of the present invention, there is provided a range hood including a fan assembly, and the fan assembly is the above-mentioned fan assembly.

[0015] According to another aspect of the present invention, there is provided a control method for a range hood, which is used to control the above-mentioned range hood. The method includes the following steps: The first sensing control module receives the control information from the central control module, and controls the water inlet valve to open the water inlet, the air inlet hole and the exhaust hole, so that the external water source enters the water storage box; The first detection module periodically detects whether the water in the water storage box is full. When the water in the water storage box is full, the first sensing control module controls the water inlet valve to close the water inlet. If the water in the water storage box is not full, the water inlet valve continues to open the water inlet to fill the water storage box with water; The second detection module periodically detects the temperature of the cooling water in the water storage box. When the temperature of the cooling water in the water storage box is greater than or equal to the preset value, the second sensing control module controls the water outlet valve to open the first water outlet pipe, so that the water in the water storage box flows out of the water storage box.

[0016] Further, the range hood further includes a direct shutdown module; When the direct shutdown module is triggered to start, the central control module closes the water inlet through the first sensing control module. After the second detection module detects that the water in the water storage box has drained out, the first sensing control module controls the first water outlet pipe and the second water outlet pipe to close; After the central control module controls the air inlet hole and the exhaust hole to close, the central control module then controls the range hood to shut down.

[0017] Further, the range hood further includes a delayed shutdown module; When the delayed shutdown module is triggered to operate, the first sensing control module controls the water inlet valve to open the water inlet, the second sensing control module controls the water outlet valve to open the second water outlet pipe, and the second sensing control module controls the water outlet valve to close the first water outlet pipe; When the central control module determines that the operation duration of the delayed shutdown module is greater than or equal to the preset value, the central control module controls the range hood to trigger the direct shutdown module to operate to shut down the range hood.

[0018] Further, the range hood further includes a cleaning module; When the cleaning module is triggered to operate, the first sensing control module controls the water inlet valve to open the water inlet, the second sensing control module controls the water outlet valve to open the second water outlet pipe, and the second sensing control module controls the water outlet valve to close the first water outlet pipe; When the cleaning module is triggered to stop operating, the central control module controls the range hood to trigger the direct shutdown module to operate to shut down the range hood.

[0019] Applying the technical solution of the present invention, by setting a cooling device, it is possible to use the external water source to cool the driving part, effectively avoiding the problem that the long-term operation of the driving part generates high temperature, resulting in the shortening of the service life of the fan assembly, and at the same time improving the safety of the fan assembly. The range hood with this fan assembly always operates in a safe working environment, ensuring the reliability of the range hood and improving the efficiency of fume extraction. Description of the Drawings

[0020] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic 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:

[0021] Figure 1 Shows an exploded structural schematic diagram of an embodiment of a fan assembly according to the present invention;

[0022] Figure 2 Shows a structural schematic diagram of a first embodiment of a fan assembly according to the present invention;

[0023] Figure 3 Shows a structural schematic diagram of a second embodiment of a fan assembly according to the present invention;

[0024] Figure 4 Shows Figure 3 A sectional structural schematic diagram taken along the line A-A in

[0025] Figure 5 Shows a structural schematic diagram of an embodiment of the assembly of a water storage box and a motor housing;

[0026] Figure 6 Shows a logic block diagram of an embodiment of a control method for a range hood according to the present invention.

[0027] Among them, the above-mentioned drawings include the following reference numerals:

[0028] 10. Driving part; 11. Annular groove;

[0029] 20. Wind wheel;

[0030] 30. Cooling device; 31. Water storage box; 311. Water inlet; 312. Water outlet;

[0031] 32. Water inlet valve;

[0032] 33. Water outlet valve; 331. First water outlet pipe; 332. Second water outlet pipe;

[0033] 40. Annular sealing ring. Detailed implementation manners

[0034] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0035] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0036] It should be noted that the terms "first", "second", etc. in the description, claims and drawings of the present application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that these terms can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that comprises a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0037] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many different forms and should not be construed as being limited only to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the present application is thorough and complete, and the concept of these exemplary embodiments is fully conveyed to those of ordinary skill in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and thus their description will be omitted.

[0038] Combined with Figures 1 to 6 As shown, according to a specific embodiment of the present invention, a fan assembly is provided.

[0039] Specifically, the fan assembly includes a driving part 10, a wind wheel 20, and a cooling device 30. The driving part 10 is connected to the wind wheel 20, and the driving part 10 is used to drive the wind wheel 20 to rotate. The cooling device 30 is connected to the driving part 10. The cooling device 30 has a water inlet system and a water outlet system. After the cooling water from the outside flows into the cooling device 30 through the water inlet system and exchanges heat with the driving part 10, the cooling water after heat exchange becomes hot water and is discharged outside the cooling device 30 through the water outlet system to reduce the temperature of the driving part 10.

[0040] In this embodiment, by providing a cooling device, the driving part can be cooled using an external water source, effectively avoiding the problem that the lifespan of the fan assembly is shortened due to the high temperature generated by the long-term operation of the driving part. At the same time, the safety of the fan assembly is improved. This enables the range hood equipped with this fan assembly to always operate in a safe working environment, ensuring the reliability of the range hood and improving the efficiency of oil fume extraction.

[0041] As Figure 1 shown, the cooling device 30 includes a water storage box 31. The water storage box 31 has a water inlet 311 and a water outlet 312. The water outlet system is arranged at the water outlet 312, and the water inlet system includes a water inlet valve 32. The water inlet valve 32 is connected to the water storage box 31. The water inlet valve 32 is used to open or close the water inlet 311. When the water inlet 311 is in the open position, the external cooling water flows into the water storage box 31 through the water inlet 311, exchanges heat with the driving part 10, and then the cooled water after heat exchange is discharged out of the cooling device 30 through the water outlet system.

[0042] To enable the water flow to smoothly enter and exit the water storage box 31, an air inlet hole and an air outlet hole are provided in the water inlet valve 32. When the water storage box 31 stores water, the air outlet hole discharges air, and when the water storage box 31 drains water, the air inlet hole intakes air.

[0043] Furthermore, the fan assembly further includes a central control module, a first detection module, and a first sensing control module. The first detection module is used to detect information on whether the cooling water in the water storage box 31 is filled to a first preset position. The central control module is used to receive the information from the first detection module. The first sensing control module controls the opening or closing of the air inlet hole and the air outlet hole, and controls the water inlet valve 32 to open or close the water inlet 311 according to the information received by the central control module from the first detection module.

[0044] The water outlet system includes a water outlet valve 33. The water outlet valve 33 is arranged at the water outlet 312. The water outlet valve 33 includes a first water outlet pipe 331, and the first water outlet pipe 331 is used to discharge the water in the water storage box 31 out of the water storage box 31. Among them, the water outlet valve 33 is used to control the conduction or closing of the first water outlet pipe 331 and the water outlet 312. Such a setting can control the temperature of the driving part by controlling the closing or opening of the water inlet 311 and the first water outlet pipe 331, effectively improving the practicability and reliability of the fan assembly.

[0045] The water outlet valve 33 further includes a second water outlet pipe 332. The first end of the second water outlet pipe 332 is selectively connected to the water outlet 312 through the water outlet valve 33. The second end of the second water outlet pipe 332 is arranged toward the impeller 20 side, and the second water outlet pipe 332 is used to divert the cooling water in the water storage box 31 to the impeller 20 for cleaning the impeller 20. The water outlet valve 33 is used to control the conduction or closing of the second water outlet pipe 332 and the water outlet 312. Among them, asFigure 1 As shown, the first water outlet pipe 331 can be set as a straight pipe, and the second water outlet pipe 332 can be set as a bent pipe. In the embodiment shown, Figure 6 the straight water outlet is the water outlet of the straight pipe, and the bent water outlet is the water outlet of the bent pipe.

[0046] Furthermore, the fan assembly further includes a second detection module, a data receiving module, and a second sensing control module. The second detection module is used to detect the temperature information of the driving part 10. The data receiving module is used to receive the temperature information detected by the second detection module. The central control module controls the water inlet valve 32 to open or close the water inlet 311 according to the temperature information sent by the data receiving module, and controls the water outlet valve 33 in the water outlet system to open or close the water outlet 312. The first water outlet pipe 331 and the second water outlet pipe 332 are arranged in parallel. The second sensing control module controls the water outlet valve 33 to independently control the conduction or closing of the first water outlet pipe 331, and the water outlet valve 33 independently controls the conduction or closing of the second water outlet pipe 332. Such a setting can further improve the reliability of the fan assembly.

[0047] In this embodiment, the driving part 10 is a motor. As Figure 5 shown, an annular groove 11 is provided on the housing of the motor. The inner wall surface of the annular groove 11 is provided with internal threads, and at least part of the outer peripheral surface of the water storage box 31 is provided with external threads that cooperate with the internal threads.

[0048] To improve the sealing performance between the water storage box 31 and the motor, the fan assembly is further provided with an annular sealing ring 40, and the annular sealing ring 40 is arranged at the bottom of the annular groove 11.

[0049] The fan assembly in the above embodiment can also be used in the technical field of range hood equipment. That is, according to another aspect of the present invention, a range hood is provided, including a fan assembly, and the fan assembly is the fan assembly in the above embodiment.

[0050] According to another aspect of the present invention, a control method for a range hood is provided. The method is used to control the range hood in the above embodiments, and the method includes the following steps: The first sensing control module receives the control information from the central control module, and controls the water inlet valve 32 to open the water inlet 311, the air inlet hole and the exhaust hole, so that the external water source enters the water storage box 31; The first detection module periodically detects whether the water storage box 31 is full of water. When the water storage box 31 is full of water, the first sensing control module controls the water inlet valve 32 to close the water inlet 311. If the water storage box 31 is not full of water, the water inlet valve 32 continues to open the water inlet 311 to fill the water storage box 31 with water; The second detection module periodically detects the temperature of the cooling water in the water storage box 31. When the temperature of the cooling water in the water storage box 31 is greater than or equal to the preset value, the second sensing control module controls the water outlet valve 33 to open the first water outlet pipe 331, so that the water in the water storage box 31 flows out of the water storage box 31.

[0051] As Figure 6 shown, the range hood further includes a direct shutdown module. When the direct shutdown module is triggered to start, that is, when the shutdown button is pressed, the central control module closes the water inlet 311 through the first sensing control module. After the second detection module detects that the water in the water storage box 31 has drained out, the first sensing control module controls the first water outlet pipe 331 and the second water outlet pipe 332 to close. After the central control module controls the air inlet hole and the exhaust hole to close, the central control module then controls the range hood to shut down.

[0052] The range hood further includes a delayed shutdown module. When the delayed shutdown module is triggered to operate, that is, when the delayed shutdown button is pressed, the first sensing control module controls the water inlet valve 32 to open the water inlet 311, the second sensing control module controls the water outlet valve 33 to open the second water outlet pipe 332, and the second sensing control module controls the water outlet valve 33 to close the first water outlet pipe 331; When the central control module determines that the operation duration of the delayed shutdown module is greater than or equal to the preset value, the central control module controls the range hood to trigger the direct shutdown module to operate to turn off the range hood.

[0053] The range hood further includes a cleaning module. When the cleaning module is triggered to operate, that is, when the cleaning button is pressed, the first sensing control module controls the water inlet valve 32 to open the water inlet 311, the second sensing control module controls the water outlet valve 33 to open the second water outlet pipe 332, and the second sensing control module controls the water outlet valve 33 to close the first water outlet pipe 331. When the cleaning module stops operating, the central control module controls the range hood to trigger the direct shutdown module to operate to turn off the range hood.

[0054] Specifically, when the range hood operates for a long time (such as when cooking soup or for other special purposes) or when the weather is too hot during operation, the temperature of the motor rises too high, which may lead to problems such as affecting the service life, performance, and safety of the range hood motor. Moreover, after the range hood has been used for a certain number of years, its impeller will accumulate oil stains and other substances that are difficult to clean, affecting the performance of the range hood, such as the air volume, resulting in problems such as the range hood being unable to effectively extract oil fumes or having too low an oil fume extraction efficiency, and prolonging the service life of the range hood.

[0055] By adopting the structure of the range hood of the present application, the problem that the temperature rise of the range hood motor is too high, which affects its service life, performance, and safety, is effectively solved. It effectively alleviates the problem that after the range hood has been used for a certain number of years, its impeller will accumulate oil stains and other substances that are difficult to clean, affecting the performance of the range hood, such as the air volume, resulting in problems such as the range hood being unable to effectively extract oil fumes or having too low an oil fume extraction efficiency. The range hood adopting this structure can prolong the service life of the range hood.

[0056] In the present application, a fan assembly with a motor water cooling structure is provided, which can continuously pour cold water into the structure to keep the motor cool at a proper temperature. And when the range hood enters the timed shutdown state, the impeller can be automatically and continuously cleaned for three minutes through this structure until the range hood is turned off. Since the self-cleaning is carried out immediately after each use of the range hood, it is easier to clean thoroughly, avoiding problems such as difficult cleaning and prolonging the service life of the range hood.

[0057] The range hood of the present application is a range hood with a self-cleaning structure, which solves the problems of too high temperature rise caused by long-term operation or operation in a high-temperature environment of the range hood and difficult impeller cleaning. The central control module of the range hood is arranged on the control board of the range hood. The water storage box is in a disc shape, and a tapped external thread is provided at the open end for connecting with the motor. Water inlets and outlets are respectively opened on the upper and lower sides for connecting with a water inlet detection device and a water outlet detection device, as Figure 1 shown in A in [description]. A is the detection device, and the detection device includes a water inlet detection device and a water outlet detection device. The tail end of the motor is designed with a threaded structure for connecting with the water storage box, as Figure 4 shown at B in [description].

[0058] In this application, the range hood can cool down the motor, enabling the motor to always maintain an appropriate temperature. It can also perform self-cleaning for a preset duration in the delayed shutdown state. Additionally, the self-cleaning function can be controlled through a cleaning button, and at this time, the cleaning duration and time point can be determined by the user. Specifically, in the non-shutdown or delayed shutdown state, the user can start the cleaning by pressing the cleaning button, and press the cleaning button again to end the cleaning. Moreover, in the cleaning state (whether it is self-cleaning during delayed shutdown or cleaning by the user pressing the cleaning button), the direct water outlet is always in the closed state, while the water inlet is always in the open state. This is because when the cleaning function is activated, the central control module issues commands to the water inlet detection device and the water outlet detection device. After receiving the commands, the sensing control modules of both devices respectively execute the operation of keeping the direct water outlet normally closed and the water inlet normally open. In this application, the external water source is tap water, and the specific control process is as Figure 6 shown.

[0059] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations during use or operation in addition to the orientation depicted in the figure for the device. For example, if the device in the drawing is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "beneath" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0060] In addition to the above, it should also be noted that in this specification, terms such as "one embodiment", "another embodiment", "embodiment", etc. refer to specific features, structures, or characteristics described in connection with that embodiment being included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure, or characteristic in connection with any one embodiment, it is intended that implementing such feature, structure, or characteristic in connection with other embodiments also falls within the scope of the present invention.

[0061] In the above embodiments, the descriptions of each embodiment have their own focuses. For parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0062] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A fan assembly, characterized in that, it includes: a driving part (10); a wind wheel (20), the driving part (10) is connected to the wind wheel (20), and the driving part (10) is used to drive the wind wheel (20) to rotate; a cooling device (30), the cooling device (30) is connected to the driving part (10), and the cooling device (30) has a water inlet system and a water outlet system; a water storage box (31), the water storage box (31) has a water inlet (311) and a water outlet (312), the water outlet system is arranged at the water outlet (312), the water inlet system includes a water inlet valve (32), the water inlet valve (32) is connected to the water storage box (31), and the water inlet valve (32) is used to open or close the water inlet (311). When the water inlet (311) is in the open position, the external cooling water flows into the water storage box (31) through the water inlet (311), exchanges heat with the driving part (10), and then the cooled water after heat exchange is discharged out of the cooling device (30) through the water outlet system; a water outlet valve (33), the water outlet valve (33) is arranged at the water outlet (312), the water outlet valve (33) includes a first water outlet pipe (331) and a second water outlet pipe (332), the first end of the second water outlet pipe (332) is selectively communicated with the water outlet (312) through the water outlet valve (33), the second end of the second water outlet pipe (332) is arranged towards the side of the wind wheel (20), and the second water outlet pipe (332) is used to drain the cooling water in the water storage box (31) onto the wind wheel (20) for cleaning the wind wheel (20), and the water outlet valve (33) is used to control the second water outlet pipe (332) to be communicated with or closed to the water outlet (312).

2. The fan assembly according to claim 1, characterized in that, the water inlet valve (32) is provided with an air inlet hole and an air outlet hole. When the water storage box (31) stores water, the air outlet hole discharges air. When the water storage box (31) drains water, the air inlet hole intakes air.

3. The fan assembly according to claim 2, characterized in that, the fan assembly further includes: a central control module; a first detection module, the first detection module is used to detect the information whether the cooling water in the water storage box (31) is filled to a first preset position, and the central control module is used to receive the information of the first detection module; a first sensing control module, the first sensing control module controls the opening or closing of the air inlet hole and the air outlet hole, and controls the water inlet valve (32) to open or close the water inlet (311) according to the information received by the central control module from the first detection module.

4. The fan assembly according to claim 1, characterized in that, the water outlet system includes: The first water outlet pipe (331) is used to drain the water in the water storage box (31) out of the water storage box (31). Among them, the water outlet valve (33) is used to control the conduction or closing of the first water outlet pipe (331) and the water outlet (312).

5. The fan assembly according to claim 4, characterized in that the fan assembly further includes: a central control module; a second detection module, and the second detection module is used to detect the temperature information of the driving part (10); a data receiving module, and the data receiving module is used to receive the temperature information detected by the second detection module. The central control module controls the water inlet valve (32) to open or close the water inlet (311), and controls the water outlet system to open or close the water outlet (312) according to the temperature information sent by the data receiving module.

6. The fan assembly according to claim 5, characterized in that the water outlet system includes a second sensing control module. The first water outlet pipe (331) and the second water outlet pipe (332) are arranged in parallel. The second sensing control module controls the water outlet valve (33) to independently control the conduction or closing of the first water outlet pipe (331), and the water outlet valve (33) independently controls the conduction or closing of the second water outlet pipe (332).

7. The fan assembly according to claim 1, characterized in that the driving part (10) is a motor, an annular groove (11) is provided on the housing of the motor, internal threads are provided on the inner wall surface of the annular groove (11), and external threads matching the internal threads are provided on the outer peripheral surface of at least part of the water storage box (31).

8. The fan assembly according to claim 7, characterized in that the fan assembly further includes: an annular sealing ring (40), and the annular sealing ring (40) is arranged at the bottom of the annular groove (11).

9. An oil fume extractor includes a fan assembly, characterized in that the fan assembly is the fan assembly according to any one of claims 5 to 8.

10. A control method for an oil fume extractor, and the method is used to control the oil fume extractor in claim 9, characterized in that the method includes the following steps: The first sensing control module receives the control information of the central control module, and controls the water inlet valve (32) to open the water inlet (311), the air inlet hole and the exhaust hole, so that the external water source enters the water storage box (31); The first detection module periodically detects whether the water in the water storage box (31) is full. If the water in the water storage box (31) is full, the first sensing control module controls the water inlet valve (32) to close the water inlet (311). If the water in the water storage box (31) is not full, the water inlet valve (32) continues to open the water inlet (311) to fill water into the water storage box (31); The second detection module periodically detects the temperature of the cooling water in the water storage box (31). When the temperature of the cooling water in the water storage box (31) is greater than or equal to a preset value, the second sensing control module controls the water outlet valve (33) to open the first water outlet pipe (331) so that the water in the water storage box (31) flows out of the water storage box (31).

11. According to the method described in claim 10, characterized in that, the range hood further includes a direct shutdown module; When the direct shutdown module is triggered to start, the central control module closes the water inlet (311) through the first sensing control module. After the second detection module detects that the water in the water storage box (31) has drained out, the first sensing control module controls the first water outlet pipe (331) and the second water outlet pipe (332) to close; After the central control module controls the air inlet hole and the exhaust hole to close, the central control module then controls the range hood to turn off.

12. According to the method described in claim 11, characterized in that, the range hood further includes a delayed shutdown module; When the delayed shutdown module is triggered to operate, the first sensing control module controls the water inlet valve (32) to open the water inlet (311), the second sensing control module controls the water outlet valve (33) to open the second water outlet pipe (332), and the second sensing control module controls the water outlet valve (33) to close the first water outlet pipe (331); When the central control module determines that the operation duration of the delayed shutdown module is greater than or equal to a preset value, the central control module controls the range hood to trigger the direct shutdown module to operate to turn off the range hood.

13. According to the method described in claim 12, characterized in that, the range hood further includes a cleaning module; When the cleaning module is triggered to operate, the first sensing control module controls the water inlet valve (32) to open the water inlet (311), the second sensing control module controls the water outlet valve (33) to open the second water outlet pipe (332), and the second sensing control module controls the water outlet valve (33) to close the first water outlet pipe (331); When the cleaning module is triggered to stop operating, the central control module controls the range hood to trigger the direct shutdown module to operate to turn off the range hood.

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