CN114263944A

CN114263944A - Range hood, control method and medium

Info

Publication number: CN114263944A
Application number: CN202010967019.9A
Authority: CN
Inventors: 梁泽锋; 刘智; 苏剑权; 曲绍鹤
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2022-04-01

Abstract

A range hood comprises a range hood body and an air purification device arranged on the range hood body. An air supply module is arranged at an air outlet of the air purification device and used for adjusting the air outlet angle of the air purification device. Range hood still includes first gesture receiving module and control module, first gesture receiving module is used for receiving user's first gesture information and sends to control module, control module is used for the basis first gesture information makes air purification device switches to the second mode from first mode in first mode, air supply module air-out in the slant is in order to strengthen the air current circulation effect in the second mode, air supply module air-out in the slant forms the wind wall between user and cooking utensils. The invention also discloses a control method of the range hood and a computer readable storage medium.

Description

Range hood, control method and medium

Technical Field

The invention relates to the technical field of air purification, in particular to a range hood, a control method of the range hood and a computer readable storage medium.

Background

The existing range hood can rapidly discharge waste gas generated by combustion of a stove and oil smoke generated in the cooking process to the outside, and reduces the pollution to the air environment in a kitchen. However, part of the pollutants such as exhaust gas and oil smoke will escape the adsorption range of the range hood. And the pollutants stay in the kitchen for a long time, thus threatening the health of people. Meanwhile, the main function of the range hood is to suck away pollutants in the cooking process, but the original air quality in a kitchen cannot be improved.

Disclosure of Invention

The embodiment of the invention mainly aims to provide a range hood, aiming at solving the problem of air quality in a kitchen.

In order to achieve the above object, an embodiment of the present invention provides a range hood, including a range hood body and an air purification device disposed on the range hood body, where the air purification device includes a housing, an air inlet and an air outlet disposed on the housing, and an air duct communicating the air inlet and the air outlet, a fan module is disposed in the air duct for making an air flow enter the air duct from the air inlet and blow out from the air outlet, an air supply module is disposed at the air outlet for adjusting an air outlet angle of the air purification device, the range hood further includes a first gesture receiving module and a control module, the first gesture receiving module is configured to receive first gesture information of a user and send the first gesture information to the control module, and the control module is configured to switch the air purification device from a first operating mode to a second operating mode according to the first gesture information, in the first working mode, the air supply module obliquely supplies air upwards to enhance the air circulation effect, and in the second working mode, the air supply module obliquely supplies air downwards to form an air wall between a user and the stove. In the range hood, the first gesture information of a user is detected, and the air purification device is switched from a first working mode to a second working mode according to the first gesture information. That is, when the user does not use the cooker, the air purification device is in the second working mode, and at this time, the air supply module blows air obliquely upwards to enhance the air circulation effect, so that residual oil smoke or waste gas in the kitchen is purified through the air purification device. When a user is ready to use the cooker, the user performs a certain action to generate the first gesture information, and the control module is used for switching the air purification device from a first working mode to a second working mode according to the first gesture information. At the moment, the air supply module obliquely supplies air downwards so as to form an airflow wall between the head of the user and the range hood, so that the user is prevented from breathing oil smoke or waste gas generated in the cooking process. In addition, because the working mode of the air purification device is switched by using gestures, a user does not need to directly contact the air purification device or the key board of the range hood, thereby avoiding the pollution to the hand of the user in the cooking process.

Optionally, the first gesture receiving module is configured to receive second gesture information of the user and send the second gesture information to the control module, and the control module is configured to switch the air purification apparatus from the second working mode back to the first working mode according to the second gesture information. That is, after cooking is finished, the user can switch the air purification device from the second working mode back to the first working mode, and at this time, the air supply module blows air obliquely upwards to enhance the air circulation effect, so as to purify residual oil smoke or waste gas in a kitchen through the air purification device.

Optionally, first gesture receiving module includes first photosensitive element and second photosensitive element, first photosensitive element with second photosensitive element sets up respectively the left and right sides of air outlet, first gesture information is user's hand follow first photosensitive element moves to second photosensitive element, second gesture information is user's hand follow second photosensitive element moves to first photosensitive element. By arranging the first photosensitive element and the second photosensitive element, when the hand of a user is close to the first photosensitive element or the second photosensitive element, the first photosensitive element or the second photosensitive element can receive corresponding signals. At this time, the left-right movement direction of the hand of the user may be determined according to the time interval of the signals received by the first and second light sensing elements.

Optionally, the air supply module includes a first air guide assembly, the first air guide assembly is disposed inside the air duct and rotatably disposed at the air outlet, and the air flow in the air duct is blown out to the outside through the first air guide assembly. The first air guide assembly is arranged to enable the air outlet angle of the air supply module to be adjusted through the first air guide assembly.

Optionally, the first air guide assembly includes a first blade and a first motor, the first motor is connected to the rotating shaft of the first blade to drive the first blade to rotate, and the rotating shaft of the first blade is parallel to the ground and adjusts the air outlet angle of the air supply module. The rotating shaft of the first blade is driven to rotate by the first motor so as to realize the adjustment of the rotating angle of the first blade. In addition, because the rotating shaft of the first blade is parallel to the ground, the air outlet angle of the air supply module can be adjusted up and down according to the different heights of users.

Optionally, the air supply module further includes a second air guide assembly, the second air guide assembly is disposed inside the air duct and rotatably disposed at the air outlet, a distance between the second air guide assembly and the air outlet is greater than a distance between the first air guide assembly and the air outlet, and the air flow in the air duct is transmitted to the first air guide assembly through the second air guide assembly. Through setting up second wind guide module to make the direction of rotation of second wind guide module is different with the direction of rotation of first wind guide module, air supply module's air-out angle becomes more nimble.

Optionally, the second air guide assembly includes a second blade and a second motor, the second motor is connected to the rotating shaft of the second blade to drive the second blade to rotate, and the rotating shaft of the second blade is perpendicular to the ground to adjust the air outlet angle of the air supply module in a left-right direction. And the rotating shaft of the second blade is driven to rotate by the second motor so as to realize the adjustment of the rotating angle of the second blade. In addition, because the rotating shaft of the second blade is vertical to the ground, the air outlet angle of the air supply module can be adjusted left and right according to the position of a user.

Optionally, the range hood further includes a second gesture receiving module, the second gesture receiving module is configured to receive third gesture information of a user and send the third gesture information to the control module, and when the air purification device is in the second working mode, the control module adjusts the rotation angle of the first blade according to the third gesture information. When the second gesture receiving module receives the third gesture information, the rotating angle of the first blade can be adjusted accordingly, and therefore the control of the air purifying device becomes more intelligent.

Optionally, the second gesture receiving module includes a third photosensitive element and a fourth photosensitive element, the third photosensitive element and the fourth photosensitive element are respectively disposed on the upper side and the lower side of the air outlet, and the third gesture information is the movement of the hand of the user from the third photosensitive element to the fourth photosensitive element. Through setting up third photosensitive element and fourth photosensitive element, when user's hand is close to third photosensitive element or fourth photosensitive element, third photosensitive element or fourth photosensitive element can receive corresponding signal. At this time, the up-and-down movement direction of the user's hand may be determined according to the time interval of the signals received by the third and fourth light sensing elements.

Optionally, when the second gesture receiving module receives the third gesture information and the air purification device is in the second working mode, the control module controls the first blade to rotate downwards. That is, when the hand of the user moves from top to bottom, the control module controls the first blade to rotate downward.

Optionally, the fourth gesture information is that the hand of the user moves from the fourth photosensitive element to the third photosensitive element, and when the second gesture receiving module receives the fourth gesture information and the air purifying device is in the second working mode, the control module controls the first blade to rotate upward. That is, when the hand of the user moves from bottom to top, the control module controls the first blade to rotate upward.

Optionally, one or more of the first photosensitive element, the second photosensitive element, the third photosensitive element and the fourth photosensitive element is a visible light detector or an infrared detector. When the photosensitive element is a visible light detector, if the hand of the user approaches, the intensity of the visible light detected by the visible light detector is weaker than normal, so that the hand movement of the user is detected in this way. When the photosensitive element is an infrared detector, if the hand of the user is close to the photosensitive element, the infrared detector can detect infrared information emitted by the human body, so that the hand movement of the user is detected in this way.

The embodiment of the invention also provides a control method of a range hood, the range hood comprises a range hood body and an air purification device arranged on the range hood body, the air purification device comprises a shell, an air inlet and an air outlet arranged on the shell, and an air duct communicated with the air inlet and the air outlet, a fan module is arranged in the air duct and used for enabling air flow to enter the air duct from the air inlet and blow out from the air outlet, an air supply module is arranged at the air outlet and used for adjusting the air outlet angle of the air purification device, and the control method of the range hood comprises the following steps:

receiving first gesture information of a user;

switching the air purification device from a first working mode to a second working mode according to the first gesture information; in the first working mode, the air supply module obliquely supplies air upwards to enhance the air circulation effect, and in the second working mode, the air supply module obliquely supplies air downwards to form an air wall between a user and the stove.

That is, when the user does not use the cooker, the air purification device is in the second working mode, and at this time, the air supply module blows air obliquely upwards to enhance the air circulation effect, so that residual oil smoke or waste gas in the kitchen is purified through the air purification device. When a user is ready to use the cooker, the user performs a certain action to generate the first gesture information, and the control module is used for switching the air purification device from a first working mode to a second working mode according to the first gesture information. At the moment, the air supply module obliquely supplies air downwards so as to form an airflow wall between the head of the user and the range hood, so that the user is prevented from breathing oil smoke or waste gas generated in the cooking process. In addition, because the working mode of the air purification device is switched by using gestures, a user does not need to directly contact the air purification device or the key board of the range hood, thereby avoiding the pollution to the hand of the user in the cooking process.

Optionally, the method for controlling a range hood further includes the following steps:

receiving second gesture information of the user;

and switching the air purification device from the second working mode back to the first working mode according to the second gesture information.

That is, after cooking is finished, the user can switch the air purification device from the second working mode back to the first working mode, and at this time, the air supply module blows air obliquely upwards to enhance the air circulation effect, so as to purify residual oil smoke or waste gas in a kitchen through the air purification device.

Optionally, the air supply module further includes a first air guide assembly and a second air guide assembly, the first air guide assembly and the second air guide assembly are arranged in the air duct and rotatably arranged at the air outlet, the second air guide assembly is larger than the air outlet, the first air guide assembly is larger than the air outlet, and the air flow in the air duct is transmitted to the first air guide assembly through the second air guide assembly. Through setting up first wind guide module and second wind guide module to make the direction of rotation of second wind guide module is different with the direction of rotation of first wind guide module, air supply module's air-out angle becomes more nimble.

receiving third gesture information of the user;

when the air purification device is in a second working mode, the control module controls the first blade to rotate downwards according to the third gesture information.

That is, when the hand of the user moves from top to bottom, the control module controls the first blade to rotate downward.

receiving fourth gesture information of the user;

when the air purification device is in a second working mode, the control module controls the first blade to rotate upwards according to the fourth gesture information.

That is, when the hand of the user moves from bottom to top, the control module controls the first blade to rotate upward.

The embodiment of the invention also provides a computer readable storage medium, wherein the computer readable storage medium is used for storing the control program of the range hood, and the control program of the range hood realizes the control method of the range hood as described above when being executed by the processor.

In the technical scheme provided by the embodiment of the invention, the first gesture information of the user is detected, and the air purification device is switched from the first working mode to the second working mode according to the first gesture information. That is, when the user does not use the cooker, the air purification device is in the second working mode, and at this time, the air supply module blows air obliquely upwards to enhance the air circulation effect, so that residual oil smoke or waste gas in the kitchen is purified through the air purification device. When a user is ready to use the cooker, the user performs a certain action to generate the first gesture information, and the control module is used for switching the air purification device from a first working mode to a second working mode according to the first gesture information. At the moment, the air supply module obliquely supplies air downwards so as to form an airflow wall between the head of the user and the range hood, so that the user is prevented from breathing oil smoke or waste gas generated in the cooking process. In addition, because the working mode of the air purification device is switched by using gestures, a user does not need to directly contact the air purification device or the key board of the range hood, thereby avoiding the pollution to the hand of the user in the cooking process.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a range hood provided in an embodiment of the present invention.

Fig. 2 is a schematic structural view of the air cleaning device in fig. 1 with the housing removed.

Fig. 3 is an exploded view of the range hood of fig. 1.

Fig. 4 is a schematic structural diagram of the blower module in fig. 3.

Fig. 5 is an exploded view of the blower module of fig. 4.

Fig. 6 is a schematic diagram of the airflow path when the range hood is in the circulating air cleaning mode.

FIG. 7 is a schematic view of a first blade angle of the blower module of FIG. 4 in a circulating air cleaning mode and a blower mode.

Fig. 8 is a second blade angle change schematic diagram of the air blowing module in fig. 4.

Fig. 9 is an electrical connection diagram of the first gesture receiving module in the range hood of fig. 1.

FIG. 10 is an electrical connection diagram of a second gesture receiving module in the extractor hood of FIG. 1

Fig. 11 is a schematic position diagram of the first photosensitive element, the second photosensitive element, the third photosensitive element and the fourth photosensitive element in fig. 9 and 10.

Fig. 12 is a schematic view illustrating adjustment of an upper air outlet angle and a lower air outlet angle of the range hood in fig. 1 in an actual use process.

Fig. 13 is a schematic view illustrating adjustment of left and right air outlet angles of the range hood in fig. 1 in an actual use process.

Fig. 14 is a control method of a range hood according to another embodiment of the present invention.

Fig. 15 is a control method of a range hood according to another embodiment of the present invention.

Fig. 16 is a schematic diagram of a hardware usage environment of a computer-readable storage medium according to an embodiment of the present invention.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" and/or "appears throughout, the meaning includes three parallel schemes, for example," A and/or B "includes scheme A, or scheme B, or a scheme satisfying both schemes A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 2, an embodiment of the invention provides a range hood 100, which includes a range hood body 10 and an air purification device 20 disposed on the range hood body 10. In this embodiment, the range hood body 10 includes a smoke collection assembly 11 and a chassis assembly 12. The smoke collection assembly 11 is disposed above the cooker 200 and used for collecting pollutants such as oil smoke generated in the cooking process. The cabinet assembly 12 is provided with a flue, a controller, and the like. A cooker 200, such as a gas stove, an electromagnetic stove, etc., is disposed below the extractor hood body 10. The cooking utensils 200 are provided with a frying pan, a saucepan, a steamer and the like. The range hood body 10 is used for recovering and cleaning oil smoke or waste gas generated in the use process of the kitchen range 200. In the present embodiment, the cooking appliance 200 includes a first burner 201 and a second burner 202, the first burner 201 is disposed at a left position of the cooking appliance 200, and the second burner 202 is disposed at a right position of the cooking appliance 200. The cooktop 200 further comprises a first switch knob 203 and a second switch knob 204. The first switch knob 203 is used for controlling the first furnace end 201 to be opened, and the second switch knob 204 is used for controlling the second furnace end 202 to be opened.

Referring to fig. 3, the air purifying device 20 includes a housing 21, a blower module 22, a filter module 23, and an air supply module 24. The shell 21 is provided with a left air inlet 211, a right air inlet 212, an air outlet 213 and an air duct connecting the left air inlet 211 and the right air inlet 212 with the air outlet 213. It is understood that only one air inlet may be provided. In this embodiment, the strainer module 23 includes a first strainer module 231 and a second strainer module 232. The first and

second screen modules

231 and 232 are disposed at both ends of the housing 21, respectively. Specifically, the first screen module 231 is disposed at the left side of the housing 21, and the first screen module 231 is disposed near the left air inlet 211. Second screen module 232 is disposed on the right side of housing 21, and second screen module 232 is disposed near right side air inlet 212. The fan module 22 is disposed in the air duct, and is configured to enable air flow to enter the air duct from the left air inlet 211 and the right air inlet 212 and to be blown out from the air outlet 213. The blower module 22 includes an air inlet 221 and an air outlet 222. The air inlet 221 of the fan module 22 is communicated with the left air inlet 233 and the right air inlet 234 of the housing 21. The air outlet 222 of the fan module 22 is disposed adjacent to the air supply module 24. When the wind wheel in the fan module 22 rotates at a high speed, it can suck air from the air inlet 221 and blow the air out of the air outlet 222 at a certain speed. Therefore, the blower module 22 is configured to enable the airflow to enter the air purification apparatus 20 from the left air inlet 211 and the right air inlet 212, and after the airflow is filtered by the first filter screen module 231 and the second filter screen module 232, the clean airflow is delivered to the air supply module 24 and then delivered to the external environment by the air supply module 24. In this embodiment, the air outlet 222 of the fan module 22 is formed in a bell mouth shape, so as to increase the air supply area of the fan module 22 to the air supply module 24.

Referring to fig. 4, the air supply module 24 includes a base 241, and a first air guide assembly 242 and a second air guide assembly 243 disposed on the base 241. The first wind guiding assembly 242 and the second wind guiding assembly 243 are rotatably disposed inside the air duct and at the air outlet 213. The airflow in the air duct is blown out to the outside through the first air guiding assembly 242. The distance between the second air guiding assembly 243 and the air outlet 213 is greater than the distance between the first air guiding assembly 242 and the air outlet 213, and the air in the air duct is transmitted to the first air guiding assembly 242 through the second air guiding assembly 243, and then blown out to the external environment through the first air guiding assembly 242.

In this embodiment, the first air guiding assembly 242 includes a first blade 2421 and a first motor 2424, the first motor 2424 is connected to the rotating shaft of the first blade 2421 to drive the first blade 2421 to rotate, and the rotating shaft of the first blade 2421 is parallel to the ground to adjust the air outlet angle of the air supply module 24 up and down. The second air guiding assembly 243 includes a second blade 2431 and a second motor 2434, the second motor 2434 is connected to a rotation shaft of the second blade 2431 to drive the second blade 2431 to rotate, and the rotation shaft of the second blade 2431 is perpendicular to the ground to adjust an air outlet angle of the air supply module 24 in a left-right direction. The first motor 2424 and the second motor 2434 are stepper motors. Therefore, the first and

second blades

2421 and 2431 may be controlled to rotate by the first and

second motors

2424 and 2434, so as to adjust the wind outlet angle of the wind supply module 24.

Referring to fig. 5, the base 241 includes a bottom plate 2411, and a first side plate 2412, a second side plate 2413, a third side plate 2414 and a fourth side plate 2415 extending perpendicularly outward from the bottom plate 2411. In this embodiment, the bottom plate 2411, the first side plate 2412, the second side plate 2413, the third side plate 2414 and the fourth side plate 2415 together form a long strip-shaped groove-shaped structure. The first side plate 2412 and the third side plate 2414 are located on two long sides of the bottom plate 2411. The second side panel 2413 and the fourth side panel 2415 are located on the two short sides of the bottom panel 2411. The base 241 is provided with a fan connector 2416, and the fan connector 2416 is used for connecting the air outlet 222 of the fan module 22. In this embodiment, the fan connection port 2416 is disposed on the first side plate 2412. It is understood that the fan connection port 2416 may be disposed on the third side plate 2414 or other positions, which are not limited herein. Specifically, the first motor 2424 is disposed on the second side plate 2413 for driving the first blade 2421 to rotate. The second motor 2434 is disposed on the third side plate 2414 to drive the second blade 2431 to rotate.

Specifically, the first air deflection assembly 242 includes a plurality of first blades 2421. The first blades 2421 are provided with first rotating shafts 2422, and the first rotating shafts 2422 are fixed on the base 241 so that the plurality of first blades 2421 can rotate relative to the base 241, thereby adjusting the air outlet angle of the air supply module 24. In the present embodiment, the first rotating shafts 2422 are disposed parallel to the ground, each of the first blades 2421 has one first rotating shaft 2422, and the plurality of first rotating shafts 2422 are spaced apart in the height direction so that the air outlet angle of the air supply module 24 can be adjusted up and down. When the included angle between the plane of the first blade 2421 and the direction perpendicular to the ground is 0 to 90 degrees, the airflow generated by the fan module 22 is blown out towards the direction of the ground after passing through the air supply module 24. When the included angle between the plane of the first blade 2421 and the direction perpendicular to the ground is 90 degrees to 180 degrees, the airflow generated by the fan module 22 is blown out towards the direction of the roof after passing through the air supply module 24. Specifically, the first wind guiding assembly 242 further includes a first linkage 2423, and the first linkage 2423 is connected to the plurality of first blades 2421 so that the plurality of first blades 2421 can rotate simultaneously. Specifically, the first link 2423 includes a body and a plurality of mounting holes provided on the body. The number of the mounting holes corresponds to the number of the first blades 2421. Each of the first blades 2421 is also provided with a second turning part. The second rotating portion is provided on the mounting hole of the first link 2423 and can rotate freely. When the first motor 2424 drives one of the first blades 2421 of the first air guiding assembly 242 to rotate, since the first rotating shaft 2422 of the first blade 2421 is fixed on the base 241, the position of the first link 2423 is displaced along with the rotation of the first blade 2421, so as to drive the other first blades 2421 to rotate at the same time. Therefore, only one motor is needed to drive the plurality of blades to rotate simultaneously, and cost is saved.

Specifically, the second wind guiding assembly 243 includes a plurality of second blades 2431. The second blades 2431 are provided with second rotation shafts 2432, and the second rotation shafts 2432 are fixed to the base 241 such that the plurality of second blades 2431 can rotate with respect to the base 241, thereby adjusting the left and right air outlet angles of the air supply module 24. In the present embodiment, the first rotating shaft 2422 is disposed perpendicular to the ground, each second blade 2431 has a second rotating shaft 2432, and the second rotating shafts 2432 are spaced apart in the horizontal direction so that the air outlet angle of the air supply module 24 can be adjusted left and right. When the included angle between the plane where the second blade 2431 is located and the left side of the plane where the air outlet is located is 0-90 degrees, the airflow generated by the fan module 22 is blown out towards the left side direction after passing through the air supply module 24. When the included angle between the plane where the second blade 2431 is located and the right side of the plane where the air outlet is located is 90 degrees to 180 degrees, the airflow generated by the fan module 22 is blown out in the right direction after passing through the air supply module 24. Specifically, the second air guiding assembly 243 further includes a second connecting rod 2433, and the second connecting rod 2433 is connected to the plurality of second blades 2431 so that the plurality of second blades 2431 can rotate simultaneously. Specifically, the second link 2433 includes a body and a plurality of mounting grooves provided on the body. The number of the mounting grooves corresponds to the number of the second blades 2431. Each of the second blades 2431 is also provided with a fourth rotation part. The fourth rotating part is disposed on the mounting groove of the second link 2433 and can freely rotate. When the second motor 2434 drives one of the second blades 2431 of the second wind guide assembly 243 to rotate, since the second rotating shaft 2432 of the second blade 2431 is fixed on the base 241, the position of the second link 2433 is displaced along with the rotation of the second blade 2431, so as to drive the other second blades 2431 to rotate at the same time. Therefore, only one motor is needed to drive the plurality of blades to rotate simultaneously, and cost is saved. The second air guiding assembly 243 further includes a first gear 2435 and a second gear 2436, as required. The first gear 2435 is fixed to the second motor 2434, such that the second motor 2434 can rotate the first gear 2435. The second gear 2436 is fixed to a second rotation shaft 2432 of the second blade 2431. The first gear 2435 and the second gear 2436 are engaged with each other, so that the second motor 2434 can drive the second blade 2431 to rotate, thereby adjusting the left and right air outlet angles of the second air guiding assembly 243.

In this embodiment, the air supply module 24 further includes a blade mounting plate 244, and the blade mounting plate 244 is fixedly connected to the base 241. The first rotating shaft 2422 of the first blade 2421 is clamped between the blade mounting plate 244 and the base 241. Specifically, the blade mounting plate 244 includes a first end 2441, a second end 2442, a third end 2443, and a fourth end 2444. The first end 2441 and the third end 2443 are provided with a plurality of screw hole locations for securing the blade mounting plate 244 to the base 241. Correspondingly, the first side plate 2412 and the third side plate 2414 of the base 241 are also provided with corresponding screw hole positions. The first end 2441 of the blade mounting plate 244 is fixed to the first side plate 2412 of the base 241 by screws, and the third end 2443 of the blade mounting plate 244 is fixed to the third side plate 2414 of the base 241 by screws. At this time, the base 241 and the blade mounting plate 244 are fixed together, thereby clamping one end of the first rotating shaft 2422 on the second side plate 2413 and the second end 2442, and clamping the other end of the first rotating shaft 2422 on the fourth side plate 2415 and the fourth end 2444. It will be appreciated that the blade mounting plate 244 may also be secured to the base 241 by a snap-fit arrangement. A plurality of first mounting grooves 2445 are provided at the second end 2442 and the fourth end 2444 to fix both ends of the first rotating shaft 2422 to prevent the first rotating shaft 2422 from being displaced, as required. As required, a plurality of first mounting protrusions 2417 are disposed on the second side plate 2413 and the fourth side plate 2415 to match with the first mounting groove 2445. The first mounting boss 2417 is received in the first mounting slot 2445 when the blade mounting plate 244 is secured to the base 241. A gap is formed between the top surface of the first mounting protrusion 2417 and the bottom surface of the first mounting groove 2445 to accommodate the two ends of the first rotating shaft 2422. Similarly, a plurality of second mounting grooves 2446 are provided at the first end 2441 and the third end 2443 to fix both ends of the second rotating shaft 2432 to prevent the second rotating shaft 2432 from being displaced. As required, a plurality of second mounting protrusions 2418 matched with the second mounting groove 2446 are disposed on the first side plate 2412 and the third side plate 2414. The second mounting boss 2418 is received in the second mounting slot 2446 when the blade mounting plate 244 is secured to the base 241. Gaps are formed between the top surfaces of the second mounting protrusions 2418 and the bottom surfaces of the second mounting grooves 2446 to accommodate the two ends of the second rotating shaft 2422.

The air supply module 24 further includes a panel 245, as required. The panel 245 covers the blade mounting plate 244 to shield the entire mounting structure of the blower module 24 and to enhance the appearance. In this embodiment, the face plate 245 is secured to the blade mounting plate 244 by a snap-fit. It will be appreciated that the face plate 245 may also be secured to the blade mounting plate 244 by screws. In the installation process of the air supply module 24, the plane of the air outlet of the air supply module 24 is perpendicular to the ground, so that the fan connection port 2416 faces upward to receive the airflow generated by the fan module 22. The rotation angles of the first blade 2421 and the second blade 2431 are adjusted by the first motor 2424 and the second motor 2434, so that the air outlet angle of the air supply module 24 is adjusted.

Referring to fig. 6, in order to effectively reduce the oil smoke in the kitchen and restore the clean air environment, the air purification apparatus 20 is provided with a circulating air purification mode, i.e., a first operation mode. In the working mode, an included angle between the plane where the first blade 2421 is located and the direction perpendicular to the ground is adjusted to be 90 degrees to 180 degrees, and an included angle between the plane where the second blade 2431 is located and the air outlet surface of the air supply module 24 is adjusted to be 90 degrees. At this time, air returns from the left and right side surfaces of the air purification device 20, and air is discharged obliquely upwards from the front surface. In fig. 6, the airflow path X is an airflow flow path near the roof. In the circulating air purification mode, the air purification device 20 can sufficiently stir the air in the kitchen to circulate the air in the kitchen, so that the pollutants can timely enter the air purification device 20 through the air flow, and the pollutants are treated by the first filter screen module 231 and the second filter screen module 232 therein, and finally, the fan module 22 discharges clean air through the air outlet. The air purification device 20 can work together with the range hood body 10, and can effectively reduce the oil smoke in a kitchen. If necessary, in the above-mentioned circulating air cleaning mode, the second blades 2431 may be configured to swing left and right, so that the air cleaning device 20 can achieve a wider range of air circulation. The air cleaning device 20 is also provided with an air supply mode, i.e. a second operation mode. In the air supply mode, an included angle between a plane where the first blades 2421 are located and the direction perpendicular to the ground is adjusted to be 0-90 degrees, so that an air wall is formed between the cooker and a user, and oil smoke generated when the cooker works is prevented from reaching a breathing area of the user. Meanwhile, the oil smoke flows back to the smoke collection assembly 11 of the range hood body 10 under the action of the range hood body 10, so that the user can breathe clean air, and the health of the user is protected. Fig. 7 is a cross-sectional view of the blower module 24. It can be seen that, in the circulating air cleaning mode, the angle between the plane where the first blade 2421 is located and the direction perpendicular to the ground surface can be adjusted to 90 degrees to 180 degrees (as shown in a2 position) to sufficiently stir the air in the kitchen. In the air supply mode, the included angle between the plane where the first blade 2421 is located and the direction perpendicular to the ground can be adjusted to 0 degree to 90 degrees (as shown in a position of 1) to form a wind wall between the cooker and a user, so that the user cannot easily suck oil smoke. Fig. 8 is a cross-sectional view of the air blowing module 24 in another direction. When the second blade is located at position B1, the air outlet direction of the air supply module 24 is the left direction. When the second blade is located at position B2, the air outlet direction of the air supply module 24 is the right direction.

Referring to fig. 9 to 11, the range hood 100 further includes a first gesture receiving module 60 and a control module 40, the first gesture receiving module 60 is configured to receive first gesture information of a user and send the first gesture information to the control module 40, the control module 40 is configured to switch the air purifying device 20 from a first operating mode to a second operating mode according to the first gesture information, in the first operating mode, the air supply module 24 blows air obliquely upward to enhance an airflow circulation effect, and in the second operating mode, the air supply module 24 blows air obliquely downward to form an air wall between the user and the kitchen range. That is, when the user does not use the cooker, the air purification device is in the second working mode, and at this time, the air supply module blows air obliquely upwards to enhance the air circulation effect, so that residual oil smoke or waste gas in the kitchen is purified through the air purification device. When a user is ready to use the cooker, the user performs a certain action to generate the first gesture information, and the control module is used for switching the air purification device from a first working mode to a second working mode according to the first gesture information. At the moment, the air supply module obliquely supplies air downwards so as to form an airflow wall between the head of the user and the range hood, so that the user is prevented from breathing oil smoke or waste gas generated in the cooking process. In addition, because the working mode of the air purification device is switched by using gestures, a user does not need to directly contact the air purification device or the key board of the range hood, thereby avoiding the pollution to the hand of the user in the cooking process.

It is understood that the first gesture receiving module 60 is further configured to receive second gesture information of the user and send the second gesture information to the control module 40, and the control module 40 is configured to switch the air purification apparatus 20 from the second operation mode back to the first operation mode according to the second gesture information. In this embodiment, the first gesture receiving module 60 includes a first photosensitive element 61 and a second photosensitive element 62. The first photosensitive element 61 and the second photosensitive element 62 are respectively disposed at left and right sides of the air outlet 213. The first gesture information is the movement of the user's hand from the first photosensitive element 61 to the second photosensitive element 62, and the second gesture information is the movement of the user's hand from the second photosensitive element 62 to the first photosensitive element 61. That is, when the palm of the user moves from left to right, the user sequentially passes through the first photosensitive element 61 and the second photosensitive element 62, and the first photosensitive element 61 or the second photosensitive element 62 may receive a corresponding signal. At this time, the left-right movement direction of the user's hand may be determined according to the time interval of the signals received by the first and second

light sensing elements

61 and 62. When the first photosensitive element 61 receives the signal first and the time interval of the signals of the first photosensitive element 61 and the second photosensitive element 62 is within a preset range, it is determined that the first gesture information is received. When the second photosensitive element 62 receives the signal first and the time interval between the signals of the second photosensitive element 62 and the first photosensitive element 61 is within a preset range, it is confirmed that the second gesture information is received. That is, when the palm of the user moves from the left to the right, the air cleaning device 20 is switched from the first operation mode to the second operation mode. When the user's palm moves from right to left, the air cleaning device 20 switches from the second operation mode back to the first operation mode.

In another embodiment, the range hood 100 further includes a second gesture receiving module 70, the second gesture receiving module 70 is configured to receive third gesture information and fourth gesture information of a user and send the third gesture information and the fourth gesture information to the control module 40, and when the air purification apparatus 20 is in the second operation mode, the control module 40 adjusts the rotation angle of the first blade 2421 according to the third gesture information. Specifically, the second gesture receiving module 70 includes a third photosensitive element 71 and a fourth photosensitive element 72. The third photosensitive element 71 and the fourth photosensitive element 72 are respectively disposed at upper and lower sides of the air outlet 213. The third gesture information is the movement of the hand of the user from the third photosensitive element 71 to the fourth photosensitive element 72. When the second gesture receiving module 70 receives the third gesture information and the air cleaning device 20 is in the second operation mode, the control module 40 controls the first blade 2421 to rotate downwards. The fourth gesture information is that the hand of the user moves from the fourth photosensitive element 72 to the third photosensitive element 71, and when the fourth gesture information is received by the second gesture receiving module 70 and the air cleaning device 20 is in the second operating mode, the control module 40 controls the first blade 2421 to rotate upward. That is, when the air purification apparatus 20 is in the air supply mode, a user can control the angle of the first blade 2421 to swing up and down through gestures, so that a wind wall is better formed between the user and the cooker to prevent the user from breathing oil smoke or waste gas generated during the cooking process. It is to be understood that the specific angle at which the first blade 2421 rotates may be set. For example, when the user's hand moves up and down once, the first blade 2421 rotates by an angle increased or decreased by 3-5 degrees. When the user's hand moves up and down once more, the rotation angle of the first blade 2421 is continuously increased or decreased by 3-5 degrees. The relationship between the rotation angle of the first blade 2421 and the height of the user is shown in fig. 12.

One or more of the first light sensing element 61, the second light sensing element 62, the third light sensing element 71 and the fourth light sensing element 72 are visible light detectors or infrared detectors. When the photosensitive element is a visible light detector, if the hand of the user approaches, the intensity of the visible light detected by the visible light detector is weaker than normal, so that the hand movement of the user is detected in this way. When the photosensitive element is an infrared detector, if the hand of the user is close to the photosensitive element, the infrared detector can detect infrared information emitted by the human body, so that the hand movement of the user is detected in this way. It is to be understood that the first light sensing element 61, the second light sensing element 62, the third light sensing element 71 and the fourth light sensing element 72 are not limited to a visible light detector or an infrared light detector. For example, the photosensitive element may be a reflective light sensor including a light emitting element and a light detecting element. The light emitting element and the light detecting element are set at an angle such that the light detecting element cannot receive the light emitted from the light emitting element under normal conditions. When the hand of the user moves to the surface of the photosensitive element, the light detection element can receive the light emitted by the light emitting element due to the reflection effect of the hand of the user. Thus, the hand movement of the user is detected in this manner.

The extractor hood 100 may further include a third gesture receiving module (not shown) as required. When the fifth gesture signal is received by the third gesture receiving module, the control module 40 controls the second blade 2431 of the second wind guide assembly 243 to rotate towards the left direction. When the sixth gesture signal is received by the third gesture receiving module, the control module 40 controls the second blade 2431 of the second wind guide assembly 243 to rotate in the right direction. At this time, the second blade 2431 of the second air guiding assembly 243 is controlled to rotate left and right by a gesture signal, so that the user can select the airflow direction more flexibly. As shown in fig. 13, when the user stands on the left side of the extractor hood 100, the user can control the rotation angle β of the second blade 2431 to be between 15 degrees and 45 degrees with respect to the vertical symmetry plane P of the air outlet 213 through a gesture. At this time, the air flow generated by the air purification device 20 is directly opposite to the body of the user, so as to enhance the isolation effect of the oil smoke or the exhaust gas of the air flow wall.

Another embodiment of the present invention further provides a control method of a range hood 100, where the range hood 100 includes a range hood body 10 and an air purification device 20 disposed on the range hood body 10. The air purification device 20 includes a housing 21,

air inlets

211, 212 and an air outlet 213 disposed on the housing 21, and an air duct communicating the

air inlets

211, 212 and the air outlet 213. A fan module 22 is disposed in the air duct, and is configured to enable air flow to enter the air duct from the

air inlets

211 and 212 and to be blown out from the air outlet 213. And an air supply module 24 is arranged at the air outlet 213. The air supply module 24 is used for adjusting an air outlet angle of the air purification device 20. As shown in fig. 14, the control method of the range hood 100 includes the following steps:

receiving first gesture information of a user;

switching the air cleaning device 20 from a first operation mode to a second operation mode according to the first gesture information; in the first working mode, the air supply module 24 blows air obliquely upwards to enhance the air circulation effect, and in the second working mode, the air supply module 24 blows air obliquely downwards to form an air wall between a user and the stove.

That is, when the user does not use the range, the air purification device 20 is in the second operation mode, and at this time, the air supply module 24 blows air obliquely upwards to enhance the air circulation effect, so as to purify the residual oil smoke or exhaust gas in the kitchen through the air purification device 20. When the user is ready to use the cooking appliance, the user performs an action to generate the first gesture information, and the control module 40 is configured to switch the air purification apparatus 20 from the first operation mode to the second operation mode according to the first gesture information. At this time, the air supply module obliquely 24 supplies air downwards, so that an air flow wall is formed between the head of the user and the range hood, and the user is prevented from breathing oil smoke or waste gas generated in the cooking process. Moreover, because the working mode of the air purification device is switched by using gestures, a user does not need to directly contact the air purification device 20 or the key board of the range hood 100, thereby avoiding the hand of the user from being polluted in the cooking process. In this embodiment, the first gesture information is a movement of the user's hand from left to right.

According to the requirement, the control method of the range hood 100 further includes the following steps, as shown in fig. 15:

receiving second gesture information of the user;

the air cleaning device 20 is switched from the second operation mode back to the first operation mode according to the second gesture information.

That is, after the cooking is finished, the user may switch the air purification apparatus 20 from the second operation mode back to the first operation mode, and at this time, the air supply module 24 blows air obliquely upward to enhance the air circulation effect, so as to purify the residual oil smoke or exhaust gas in the kitchen through the air purification apparatus 20. In this embodiment, the second gesture information is the movement of the user's hand from right to left.

It can be understood that the control method of the range hood 100 further includes the following steps:

receiving third gesture information of the user;

when the air cleaning device 20 is in the second operation mode, the control module 40 controls the first blade 2421 to rotate downwards according to the third gesture information.

That is, when the user's hand moves from top to bottom, the control module 2421 controls the first blade to rotate downward.

receiving fourth gesture information of the user;

when the air cleaning device 20 is in the second operation mode, the control module 40 controls the first blade 2421 to rotate upward according to the fourth gesture information.

That is, when the hand of the user moves from bottom to top, the control module 40 controls the first blade 2421 to rotate upward.

That is, when the air purification apparatus 20 is in the air supply mode, a user can control the angle of the first blade 2421 to swing up and down through gestures, so that a wind wall is better formed between the user and the cooker to prevent the user from breathing oil smoke or waste gas generated during the cooking process. It is to be understood that the specific angle at which the first blade 2421 rotates may be set. For example, when the user's hand moves up and down once, the first blade 2421 rotates by an angle increased or decreased by 3-5 degrees. When the user's hand moves up and down once more, the rotation angle of the first blade 2421 is continuously increased or decreased by 3-5 degrees.

Fig. 16 is a schematic diagram of a hardware operating environment of the terminal 50 according to an embodiment of the present invention. The terminal 50 may include: a processor 51, e.g. a CPU, a network interface 54, a user interface 53, a memory 55, a communication bus 52. Wherein a communication bus 52 is used to enable the connection communication between these components. The user interface 53 may comprise a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 53 may also comprise a standard wired interface, a wireless interface. The network interface 54 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 55 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 55 may alternatively be a storage device separate from the processor 51 described above. The memory 55 stores a control program of the range hood 100.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A range hood is characterized by comprising a range hood body and an air purification device arranged on the range hood body, wherein the air purification device comprises a shell, an air inlet and an air outlet which are arranged on the shell, and an air duct communicated with the air inlet and the air outlet, a fan module is arranged in the air duct and is used for enabling airflow to enter the air duct from the air inlet and blow out from the air outlet, an air supply module is arranged at the air outlet and is used for adjusting the air outlet angle of the air purification device, the range hood further comprises a first gesture receiving module and a control module, the first gesture receiving module is used for receiving first gesture information of a user and sending the first gesture information to the control module, the control module is used for switching the air purification device from a first working mode to a second working mode according to the first gesture information, in the first working mode, the air supply module obliquely supplies air upwards to enhance the air circulation effect, and in the second working mode, the air supply module obliquely supplies air downwards to form an air wall between a user and the stove.

2. The range hood of claim 1, wherein the first gesture receiving module is configured to receive second gesture information of a user and send the second gesture information to the control module, and the control module is configured to switch the air purifying device from the second operation mode back to the first operation mode according to the second gesture information.

3. The range hood according to claim 2, wherein the first gesture receiving module includes a first photosensitive element and a second photosensitive element, the first photosensitive element and the second photosensitive element are respectively disposed at left and right sides of the air outlet, the first gesture information indicates that the hand of the user moves from the first photosensitive element to the second photosensitive element, and the second gesture information indicates that the hand of the user moves from the second photosensitive element to the first photosensitive element.

4. The range hood of claim 3, wherein the air supply module comprises a first air guide assembly, the first air guide assembly is disposed inside the air duct and rotatably disposed at the air outlet, and the air flow inside the air duct is blown out to the outside through the first air guide assembly.

5. The range hood of claim 4, wherein the first air guiding assembly includes a first blade and a first motor, the first motor is connected to the rotating shaft of the first blade to drive the first blade to rotate, and the rotating shaft of the first blade is parallel to the ground to adjust the air outlet angle of the air supply module.

6. The range hood of claim 5, wherein the air supply module further comprises a second air guide assembly, the second air guide assembly is disposed within the air duct and rotatably disposed at the air outlet, a distance between the second air guide assembly and the air outlet is greater than a distance between the first air guide assembly and the air outlet, and the air flow in the air duct is transmitted to the first air guide assembly through the second air guide assembly.

7. The range hood of claim 6, wherein the second wind guiding assembly comprises a second blade and a second motor, the second motor is connected to the rotating shaft of the second blade to drive the second blade to rotate, and the rotating shaft of the second blade is perpendicular to the ground to adjust the wind outlet angle of the air supply module in the left-right direction.

8. The range hood according to claim 7, further comprising a second gesture receiving module, wherein the second gesture receiving module is configured to receive third gesture information of a user and send the third gesture information to the control module, and when the air purifying device is in the second operating mode, the control module adjusts a rotation angle of the first blade according to the third gesture information.

9. The range hood according to claim 8, wherein the second gesture receiving module includes a third photosensitive element and a fourth photosensitive element, the third photosensitive element and the fourth photosensitive element are respectively disposed at upper and lower sides of the air outlet, and the third gesture information indicates that the hand of the user moves from the third photosensitive element to the fourth photosensitive element.

10. The range hood of claim 9, wherein when the second gesture receiving module receives the third gesture information and the air purifying device is in the second operating mode, the control module controls the first blade to rotate downward.

11. The range hood according to claim 10, wherein the fourth gesture information is that the hand of the user moves from the fourth light sensing element to the third light sensing element, and when the second gesture receiving module receives the fourth gesture information and the air purifying device is in the second operation mode, the control module controls the first blade to rotate upward.

12. The range hood according to any one of claims 3-11, wherein one or more of the first light sensing element, the second light sensing element, the third light sensing element and the fourth light sensing element is a visible light detector or an infrared detector.

13. A control method of a range hood comprises a range hood body and an air purification device arranged on the range hood body, wherein the air purification device comprises a shell, an air inlet and an air outlet which are arranged on the shell, and an air channel communicated with the air inlet and the air outlet, a fan module is arranged in the air channel and used for enabling air flow to enter the air channel from the air inlet and blow out from the air outlet, an air supply module is arranged at the air outlet and used for adjusting the air outlet angle of the air purification device, and the control method is characterized by comprising the following steps:

receiving first gesture information of a user;

14. The control method of a range hood according to claim 13, further comprising the steps of:

receiving second gesture information of the user;

15. The control method of the range hood according to claim 14, wherein the air supply module further includes a first air guide assembly and a second air guide assembly, the first air guide assembly and the second air guide assembly are disposed inside the air duct and rotatably disposed at the air outlet, a distance between the second air guide assembly and the air outlet is greater than a distance between the first air guide assembly and the air outlet, and the air flow inside the air duct is transmitted to the first air guide assembly through the second air guide assembly.

16. The control method of a range hood according to claim 15, further comprising the steps of:

receiving third gesture information of the user;

17. The control method of a range hood according to claim 16, further comprising the steps of:

receiving fourth gesture information of the user;

18. A computer-readable storage medium for storing a control program of a range hood, the control program of the range hood, when executed by a processor, implementing the control method of the range hood as set forth in any one of claims 13 to 17.