CN114526502A

CN114526502A - Range hood, control method thereof and computer-readable storage medium

Info

Publication number: CN114526502A
Application number: CN202011324655.6A
Authority: CN
Inventors: 刘智; 梁泽锋; 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: 2020-11-23
Filing date: 2020-11-23
Publication date: 2022-05-24

Abstract

The invention discloses a range hood, a control method thereof and a computer readable storage medium, wherein the range hood comprises: the range hood comprises a range hood body, an air purification device and a person signal detection device, wherein the range hood body is used for detecting person signals in the environment where the range hood is located; and the controller is electrically connected with the figure signal detection device and the air purification device respectively and used for adjusting the air outlet volume corresponding to the air purification device according to the detection result of the figure signal detection device. According to the technical scheme, the air outlet quantity corresponding to the air purification device is adjusted according to the detection result, so that the air outlet quantity of the air purification device is adjusted according to the user condition in the environment where the range hood is located, the intelligent control of the air outlet quantity of the air purification device is realized, and the comfortable experience of users is improved.

Description

Range hood, control method thereof and computer-readable storage medium

Technical Field

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

Background

During cooking, edible oil and food undergo a series of chemical reactions such as oxidation, cracking and polymerization at high temperature, a large amount of organic smoke is evaporated, and partial decomposition products are emitted into air in the form of oil mist to form oil smoke. The oil fume includes edible oil and its heating decomposition or cracking product, as well as the physical and chemical reaction of protein, polymer compound and various seasonings in food, and is one kind of matter containing gas, liquid and solid. The research shows that the components in the oil fume are quite complex, at least 200 components are detected at present, the specific components of the oil fume are different due to different cooking conditions, and the oil fume mainly comprises unsaturated hydrocarbons, saturated hydrocarbons, fatty acids, aldehydes, ketones, alcohols, esters, aromatic compounds, heterocyclic compounds and the like. The particle size of the settleable particles in the oil smoke is mainly distributed between 10 and 400 mu m, the particles can be settled on the ground and other positions under the action of self gravity and the interaction between the particles, the persistent pollution can be generated to the air environment of a kitchen, and the oil smoke pollution and the damage effect thereof to the health of users become important indoor environmental problems.

At present, the range hood can rapidly exhaust most of oil smoke generated in the cooking process and waste gas combusted by a stove to the outside, so that the pollution to the air environment in a kitchen is reduced. However, when a user cooks in a kitchen, the user often accompanies a high-temperature and humid environment generated during cooking, so that the phenomena of sweating, greasiness and the like are generated on the surface of the skin of the user, and the comfort experience of the user is low.

Disclosure of Invention

In order to further reduce the pollution of the oil smoke to the air environment in the kitchen and the damage to the health of people, the range hood is additionally provided with an air purification device on the basis of the main body of the range hood, so that the oil smoke dissipated into the space of the kitchen is sucked and purified through the air purification device. However, during the cooking process, the air purification device continuously operates with a certain air volume, for example, if the air volume of the air purification device is too large when the user is in the kitchen, the sensory comfort of the user is low, and the air volume of the air purification device is too small when the user is not in the kitchen, the oil smoke absorption efficiency of the range hood is low.

In order to achieve the above object, the range hood provided by the present invention comprises:

a cigarette machine main body; and

the air purification device is provided with a purification air channel, and a filter element and a purification fan which are arranged in the purification air channel;

the outer surface of the cigarette machine main body is provided with an air inlet communicated with the purification air channel and an air outlet communicated with the purification air channel;

the human signal detection device is used for detecting human signals in the environment where the range hood is located;

and the controller is electrically connected with the figure signal detection device and the air purification device respectively and used for adjusting the air outlet volume corresponding to the air purification device according to the detection result of the figure signal detection device.

On one hand, through the cooperative work of the air purification device and the smoke machine main body, most of the oil smoke can be discharged outdoors, and a small part of the oil smoke can be circularly purified and removed, so that the pollution of the oil smoke to the air environment and the damage to the health of a human body are further reduced; on the other hand is through adjusting according to this testing result the air purification device corresponds the air-out amount of wind to the realization is according to the user's condition regulation air purification device's in the environment that range hood is located air-out amount of wind, with the intelligent control who realizes air purification device air-out amount of wind, has promoted user's comfortable nature and has experienced.

Optionally, if it is determined that a user exists in the environment where the range hood is located according to the detection result, the controller adjusts the air outlet volume corresponding to the air purification device based on a first preset air volume; and

if it is determined that no user exists in the environment where the range hood is located according to the detection result, the controller adjusts the air outlet volume corresponding to the air purification device based on a second preset air volume; and the second preset air volume is larger than the first preset air volume.

So, according to whether there is the air-out amount of wind that user's air conditioning purification device corresponds in the environment that range hood is located, promote user's comfortable nature and experience.

Optionally, the range hood further comprises a temperature detection device for detecting an ambient temperature of an environment where the range hood is located;

if the environment temperature is lower than the preset environment temperature and the user is determined to exist in the environment where the range hood is located according to the detection result, the controller adjusts the air outlet volume corresponding to the air purification device based on the first preset air volume and adjusts the air outlet direction of the air purification device to be upward blowing.

So, according to whether there is the air outlet volume that user and ambient temperature air purification device correspond in the environment that range hood is located, promote user's comfortable nature and experience.

Optionally, if the environment temperature is greater than a preset environment temperature and it is determined that a user exists in the environment where the range hood is located according to the detection result, the controller adjusts the air outlet volume corresponding to the air purification device based on a first preset air volume and adjusts the air outlet direction of the air purification device to be downward blowing.

Optionally, the human signal detection device includes a camera, an infrared sensor, a proximity sensor, or a displacement sensor.

Therefore, whether a user exists in the environment where the range hood is located can be accurately detected through the camera device, the infrared sensor, the proximity sensor or the displacement sensor.

Optionally, when the human signal detection device includes an image pickup device, the detection result includes an image currently captured by the image pickup device;

the controller carries out image recognition on the image to obtain an image recognition result, and determines whether a user exists in the environment where the range hood is located according to the image recognition result.

So, accessible image accuracy control air purification device promotes air purification device's control accuracy.

Optionally, the cigarette machine main part includes decorates the cover and locates decorate the collection petticoat pipe of cover below, be equipped with the range hood in decorating the cover and inhale the oil smoke wind channel.

Therefore, the air purification device is hidden in the decorative cover, so that the appearance of the range hood is simpler.

Optionally, the air inlet is arranged on the side surface of the decorative cover; alternatively, the first and second electrodes may be,

the air inlet is arranged at the upper part of the front side of the decorative cover; alternatively, the first and second liquid crystal display panels may be,

the air inlet is formed in the top of the cigarette machine main body.

Thus, the air inlet is arranged at the upper part of the front surface of the decorative cover or the top of the cigarette machine main body, so as to be beneficial to sucking the oil smoke accumulated in the upper space of the kitchen due to the thermal plume effect.

Optionally, the air outlet is arranged on the front surface of the decorative cover; alternatively, the first and second electrodes may be,

the air outlet is arranged on the side surface of the decorative cover; alternatively, the first and second liquid crystal display panels may be,

the air outlet is formed in the top of the cigarette machine main body; alternatively, the first and second liquid crystal display panels may be,

the air outlet is arranged at the bottom of the cigarette machine main body,

the air outlet is arranged on the side surface of the decoration cover or the bottom of the cigarette machine main body, so that purified air can be discharged.

The invention also provides a control method of the range hood, which is applied to the range hood, and the control method of the range hood comprises the following steps:

acquiring a current detection result of the human signal detection device in real time; and

and adjusting the air outlet volume corresponding to the air purification device according to the detection result of the human signal detection device.

Optionally, the step of adjusting the air output volume corresponding to the air purifying device according to the detection result of the human signal detecting device includes:

determining whether a user exists in the environment where the range hood is located or not based on the detection result;

if the user exists in the environment where the range hood is located according to the detection result, adjusting the air outlet volume corresponding to the air purification device based on a first preset air volume; and

if it is determined that no user exists in the environment where the range hood is located according to the detection result, adjusting the air outlet volume corresponding to the air purification device based on a second preset air volume; and the second preset air volume is larger than the first preset air volume.

Optionally, if it is determined according to the detection result that the user exists in the environment where the range hood is located, the step of adjusting the air outlet volume corresponding to the air purification device based on a first preset air volume includes:

acquiring the current detected environmental temperature of a temperature detection device in real time; and

Optionally, after the step of obtaining the current ambient temperature detected by the temperature detecting device in real time, the method further includes:

if the environment temperature is higher than the preset environment temperature and the user is determined to exist in the environment where the range hood is located according to the detection result, the controller adjusts the air outlet volume corresponding to the air purification device based on the first preset air volume and adjusts the air outlet direction of the air purification device to be downward blowing.

Optionally, the human signal detection device includes an image pickup device, the detection result includes an image currently captured by the image pickup device, and the step of determining whether a user is present in the environment where the range hood is located based on the detection result includes:

carrying out image recognition on the image to obtain an image recognition result; and

and determining whether a user exists in the environment where the range hood is located according to the image recognition result.

The invention further provides a computer readable storage medium, wherein a control program of the range hood is stored on the computer readable storage medium, and the control program of the range hood realizes the steps of the control method of the range hood when being executed by the processor.

On one hand, the range hood provided by the technical scheme of the invention is additionally provided with the air purification device on the basis of the range hood main body, so that when the air purification device and the range hood main body work cooperatively, most of oil smoke generated in the cooking process can be discharged to the outside through the oil smoke suction air duct, and a small part of oil smoke can escape to other spaces in a kitchen, and can be further removed through the purification air duct, so that the pollution of the oil smoke to the air environment and the damage to the health of a human body are further reduced; on the other hand, the air outlet quantity corresponding to the air purification device is adjusted according to the detection result, so that the air outlet quantity of the air purification device is adjusted according to the user condition in the environment where the range hood is located, the intelligent control of the air outlet quantity of the air purification device is realized, the intelligence of the range hood is improved, the comfort experience of a user due to the fact that the air quantity of the air purification device is too large when the user cooks can be avoided, and the low oil smoke absorption efficiency of the range hood due to the fact that the air quantity of the air purification device is not too small in a kitchen is avoided.

Drawings

Fig. 1 is a schematic structural view of a range hood according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the range hood of FIG. 1 with the decorative cover and the filter member removed;

FIG. 3 is an exploded view of the range hood of FIG. 1;

FIG. 4 is an enlarged schematic view at A in FIG. 3;

FIG. 5 is a schematic view of a partial cross-sectional structure of the range hood of FIG. 1 from another perspective;

FIG. 6 is an enlarged schematic view at B of FIG. 5;

FIG. 7 is a schematic cross-sectional view of a portion of the range hood of FIG. 1 from another perspective;

FIG. 8 is an enlarged schematic view at C of FIG. 7;

FIG. 9 is a schematic view of the air circulation path of the range hood of FIG. 1;

fig. 10 is a flowchart illustrating a control method of a range hood according to a first 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 for explaining the relative position relationship between the components, the motion 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.

The invention provides a range hood.

Referring to fig. 1 to 3, in an embodiment of the present invention, the range hood includes:

the invention provides a range hood.

The air purification device 2 is provided with a purification air channel, and a filter piece 22 and a purification fan 23 which are arranged in the purification air channel;

the outer surface of the cigarette machine main body 1 is provided with an air inlet 111 communicated with the purification air channel and an air outlet 112 communicated with the purification air channel;

the figure signal detection device 4 is used for detecting figure signals in the environment where the range hood is located;

a controller 3 electrically connected to the human signal detection device 4 and the air purification device 2, respectively;

the controller 3 is used for adjusting the air outlet volume corresponding to the air purification device according to the detection result of the human signal detection device 4.

In this embodiment, the range hood main body 1 is provided with an oil smoke suction duct, the purification duct of the air purification device 2 is not communicated with the oil smoke suction duct, and the purification duct is provided with a purification fan 23. The smoke inlet of the oil smoke suction air duct is communicated with the indoor and is usually suspended above the kitchen range 5 so as to suck oil smoke into the oil smoke suction air duct; the smoke outlet of the oil smoke suction duct is communicated with the outside so as to discharge oil smoke to the outside; of course, the oil fume suction duct is internally provided with an oil fume fan for enabling the airflow to flow from the fume inlet to the fume outlet. It can be understood that the range hood main body 1 has the functions of the traditional range hood.

The cleaning fan 23 of the air cleaning device 2 is used to make the air flow from the air inlet 111 to the air outlet 112 through the cleaning air duct. The air inlet 111 with the air outlet 112 all communicates indoorly, the air inlet 111 is used for inhaling the indoor air in kitchen, and the filter piece 22 of air purification device 2 is used for filtering the air of inhaling and purifying, the air outlet 112 is used for discharging the air after filtering the purification back to in kitchen indoorly. When the air purification device 2 and the cigarette machine main body 1 work cooperatively, most of oil smoke generated in the cooking process is discharged to the outside through the oil smoke suction air duct, a small part of oil smoke can escape to other spaces in a kitchen, and the small part of oil smoke can be further removed through the purification air duct of the air purification device 2, so that the pollution of the oil smoke to the air environment and the damage to the health of a human body are further reduced.

In this embodiment, the controller 3 obtains a detection result of the human signal detection device 4, and preferably, when the range hood main body 1 is in the operating state, the human signal detection device 4 can detect the human signal in the environment where the range hood is located in real time, and the controller 3 obtains the detection result of the human signal detection device 4 in real time. Then, the controller 3 adjusts the air outlet volume corresponding to the air purification device 2 according to the detection result so as to adjust the air outlet volume of the air purification device 2 according to the user condition in the environment where the range hood is located, specifically, the controller 3 adjusts the air outlet volume of the air purification device 2 to a smaller air volume if it is determined that the user is present in the environment where the range hood is located according to the detection result, and the controller 3 adjusts the air outlet volume of the air purification device 2 to a larger air volume if it is determined that the user is not present in the environment where the range hood is located according to the detection result; the intelligent control of the air outlet volume of the air purification device is realized, the intelligence of the range hood is improved, the comfort experience of a user due to the fact that the air volume 2 of the air purification device is too large when the user cooks can be avoided, and the low oil smoke absorption efficiency of the range hood due to the fact that the user is not located in a kitchen and the air volume of the air purification device is too small can be avoided.

Further, in an embodiment, if it is determined that the user exists in the environment where the range hood is located according to the detection result, the controller adjusts the air outlet volume corresponding to the air purifying device based on a first preset air volume; and

The second preset outlet air volume is greater than the first preset outlet air volume, for example, the second preset outlet air volume is the maximum outlet air volume of the air purification device 2, and the first preset outlet air volume is less than half of the maximum outlet air volume of the air purification device 2.

Specifically, when the range hood main body 1 of the range hood operates, the controller 3 acquires the detection result of the person signal detection device 4 in real time, and judges whether a user exists in the environment where the range hood is located according to the detection result. If there is the user in the environment that range hood is located, then controller 3 is based on first preset air regulation the air-out amount that air purification device corresponds, for example, when range hood is in the running state, if controller 3 confirms that there is the user in the environment that range hood is located through personage's signal detection device 4's testing result, adjust the air-out amount that air purification device corresponds based on first preset air to realize automatically adjusting the air-out amount of air purification device 2 to less amount of wind, avoid influencing user's travelling comfort experience because of user's air purification device's amount of wind 2 is too big when cooking, and then promote user experience. If there is not the user in the environment that range hood is located, for example, when cigarette machine main part 1 and air purification device 2 are all in the running state, if the user leaves the kitchen, then controller 3 predetermines the amount of wind based on the second and adjusts the amount of wind that air purification device 2 corresponds to make air purification device 2 operate according to great amount of wind, promote the efficiency that range hood inhales the oil smoke.

The temperature detection device can be a temperature sensor, a temperature sensing bulb, a temperature sensing probe and the like. After the range hood starts to operate, the controller 3 can acquire the ambient temperature detected by the temperature detection device in real time and judge that the ambient temperature is less than the preset ambient temperature.

In this embodiment, if the ambient temperature is less than the preset ambient temperature, and according to the detection result determines that there is the user in the environment where the range hood is located, then controller 3 adjusts the air-out volume that air purification device 2 corresponds based on first preset air volume to adjust the air-out direction of air purification device 2 to the up-draught, with the adjustment air-out wind direction of air purification device 2 when reducing the air-out volume, avoid air purification device 2 directly to blow to the user and make the user feel cold, promote user's body and feel the comfort level. The preset ambient temperature may be set by a user, for example, the preset ambient temperature is 20 ℃, 22 ℃, etc.

Preferably, if the ambient temperature is greater than a preset ambient temperature and it is determined that a user exists in the environment where the range hood is located according to the detection result, the controller adjusts the air outlet volume corresponding to the air purification device based on a first preset air volume and adjusts the air outlet direction of the air purification device to blow downward.

In this embodiment, if ambient temperature is greater than this and predetermines ambient temperature, and has the user in the range hood environment, then controller 3 is based on first predetermined air regulation the air-out amount of wind that air purification device 2 corresponds, and control air purification device 2 blows downwards, and then when ambient temperature is higher, through controlling air purification device 2 to blow downwards when reducing the air-out amount of wind to make air purification device 2's air-out directly blow to the user, can reduce user's body surface temperature when avoiding user's sensation wind too big, and then promote user's body feel travelling comfort, promote user's comfortable nature experience.

Alternatively, the human signal detection means includes a camera, an infrared sensor, a proximity sensor, or a displacement sensor. The controller 3 can accurately determine whether a user exists in the environment where the range hood is located through the detection result of the camera device, the infrared sensor, the proximity sensor or the displacement sensor through the existing person detection algorithm.

However, the present design is not limited thereto, and in other embodiments, the human signal detection device 4 includes an image capturing device, and the detection result includes an image currently captured by the image capturing device; the controller carries out image recognition on the image to obtain an image recognition result, and determines whether a user exists in the environment where the range hood is located according to the image recognition result. The current shooting may be a camera or the like.

In this embodiment, when the controller 3 obtains an image currently captured by the camera device, the image recognition is performed on the image by using a person recognition algorithm to obtain an image recognition result, and then the controller 3 determines whether a user exists in the environment where the range hood is located according to the image recognition result, where the image recognition result includes whether a person image exists in the image, if the image recognition result is that a person image exists in the image, the controller 3 determines that a user exists in the environment where the range hood is located, and if the image recognition result is that a person image does not exist in the image, the controller 3 determines that a user does not exist in the environment where the range hood is located, so that whether a user exists in the environment where the range hood is located can be accurately determined according to the image currently captured by the camera device, and the accuracy of controlling the air purification device 2 is improved.

Optionally, the range hood main body 1 includes a decoration cover 11 and a smoke collecting cover 12 disposed below the decoration cover 11, and a smoke suction duct is disposed in the decoration cover 11 and is not communicated with the purification duct. The air purifying device 2 is arranged in the decorative cover 11, and in the embodiment, the air purifying device 2 is hidden in the decorative cover 11 to share the appearance piece, thereby simplifying the structure of the range hood.

However, this design is not limited to this, and in other embodiments, temperature-detecting device 4 still can locate the side of collection petticoat pipe 12, so, is favorable to accurate detection ambient temperature, avoids the oil smoke of cigarette machine main part 1 below to produce the influence to the ambient temperature that temperature-detecting device 4 detected, improves the accuracy that ambient temperature detected, and then improves the accuracy of carrying out air-out wind direction regulation to air monitoring devices 2.

In some other embodiments, the temperature detecting device 4 may also be disposed at the upper end of the decoration cover 11. It can be understood that, at the culinary art in-process, the culinary art oil smoke is mainly located the below of cigarette machine main part 1, can avoid the oil smoke of cigarette machine main part 1 below to produce the influence to the ambient temperature that temperature-detecting device 4 detected, improves the accuracy that ambient temperature detected, and then improves the accuracy of carrying out air-out wind direction regulation to air monitoring devices 2.

However, the design is not limited thereto, and in other embodiments, referring to fig. 2, the air purifying device 2 may also be disposed outside the cigarette maker body 1, for example, but not limited to, being fixed on the front surface of the decoration cover 11. In still other embodiments, the air purifying device 2 may also be installed without being attached to the cigarette maker main body 1, that is, the air purifying device 2 may be movable relative to the cigarette maker main body 1, at this time, the air purifying device 2 may be connected to the cigarette maker main body 1 through a power supply line to be powered by the cigarette maker main body 1, or the air purifying device 2 may be provided with a plug-in device, and may be powered by an independent plug-in manner.

Alternatively, referring to figure 1, the controller 3 is fixedly mounted to the cigarette maker body 1; it will be appreciated that the cigarette maker body 1 is generally larger in volume and has more and more convenient locations and spaces for mounting the controller 3 than the air cleaning device 2. The controller 3 is in communication connection with a lampblack blower of the cigarette machine body 1 and a purification blower of the air purification device 2 usually in a wired manner so as to send a starting signal and a stopping signal to the cigarette machine body 1 and the air purification device 2; of course, the controller 3 may also be in communication connection with the smoke ventilator of the smoke machine main body 1 and the purification ventilator of the air purification device 2 in a wireless manner, and particularly, in the technical scheme that the air purification device 2 is movable relative to the smoke machine main body 1, the controller 3 is usually in wireless communication connection with the purification ventilator of the air purification device 2.

Optionally, the air inlet 111 is disposed on a side surface of the decoration cover 11 to facilitate oil smoke escaping to a side of the range hood to be sucked into the purification air duct, so as to reduce oil smoke at the side of the range hood; particularly, when the range hood is used with two burners below, the cooking fumes generated during cooking easily escape from the side of the range hood, and the air inlet 111 disposed on the side of the decorative cover 11 is more beneficial to sucking the cooking fumes.

Optionally, two opposite side surfaces of the decorative cover 11 are respectively provided with one air inlet 111 to reduce oil smoke on two sides of the range hood. Of course, the air inlet 111 may be provided only on one of the two sides of the trim cover 11. Optionally, an air inlet grille is arranged on the air inlet 111 to prevent hands and other foreign objects from extending into the decoration cover 11.

Optionally, two filter members 22 are provided, and each filter member 22 is disposed near one of the air inlets 111; therefore, once the air with the oil smoke enters the purifying air duct, the filtering of the filtering piece 22 can be obtained, and the probability that the air with the oil smoke pollutes other devices in the purifying air duct is reduced. However, the design is not limited thereto, and in other embodiments, only one filtering element 22 may be disposed near the air outlet 112, so as to purify and discharge the oil smoke in the air.

In this embodiment, the air inlet 111 is disposed on a side surface of the decoration cover 11; however, the design is not limited thereto, and in other embodiments, the air inlet 111 may also be disposed at the upper portion of the front surface of the decoration cover 11 or at the top of the main body 1 of the range hood to facilitate the suction of the soot accumulated in the upper space of the kitchen due to the thermal plume effect, thereby facilitating the air circulation and purification of the whole space of the kitchen. When the air inlet 111 is arranged at the top of the cigarette maker body 1, it is usually arranged on the top plate of the cigarette maker body 1 connected with the decorative cover 11; of course, in some other embodiments, when the top of the decorative cover 11 is bent to form a wider top flange, the air inlet 111 may be formed on the top flange.

Optionally, the smoke ventilator of the smoke ventilator main body 1 and the purification fan 23 of the air purification device 2 are connected to the same controller 3, that is, the smoke ventilator controls the smoke ventilator main body 1 and the air purification device 2 through the same controller 3. However, the design is not limited thereto, and in other embodiments, the range hood may also be provided with two different controllers 3 to respectively control the oil smoke blower of the range hood main body 1 and the purification blower 23 of the air purification device 2.

Optionally, a control switch is further included for controlling the cleaning fan 23 of the air cleaning device 2, which is generally provided on the smoke collection hood 12. The oil smoke blower of the cigarette machine main body 1 and the purification blower 23 of the air purification device 2 respectively use different control switches to realize the independent start-up and stop control of the cigarette machine main body 1 and the air purification device 2, so that a user can use the oil smoke exhaust function and the air purification function of the range hood more flexibly. The control switch is usually electrically connected to the controller 3 to realize the on/off control.

Referring to fig. 1 to 3, in an embodiment, the air outlet 112 is disposed on a front surface of the trim cover 11; thus, after the purifying fan 23 of the air purifying device 2 is turned on, the air outlet 112 blows forward or at least has a forward wind component. In the cooking process, a user usually stands in front of the range hood, and the space in front of the range hood can be defined as a user breathing zone. It can be understood that the forward air outlet is favorable for conveying the purified air to the user breathing area, thereby being favorable for improving the air quality of the user breathing area, further reducing the probability of the user sucking the oil smoke, and reducing the harm of the oil smoke to the health of the user.

Optionally, the air outlet 112 is located at the lower part of the trim cover 11; it will be appreciated that the lower portion of the trim cover 11 is closer to the user's breathing zone, which is more conducive to delivering purified air to the user's breathing zone.

However, the design is not limited thereto, in some other embodiments, the air outlet 112 may also be disposed at the top of the smoke machine body 1 to facilitate pushing down the oil smoke accumulated in the upper space of the kitchen for being sucked and purified by the air purifying device 2, so as to bring the oil smoke in the upper part of the kitchen space into the air circulation purification, thereby further reducing the oil smoke in the kitchen; similarly, the outlet 112 is typically provided in the top panel of the cigarette maker body 1 that is attached to the trim cover 11, although the inlet 111 may be provided in the top flap of the trim cover 11 when the flap is folded to provide a wider top flap.

In other embodiments, the air outlet 112 may be disposed at the side of the decoration cover 11 or at the bottom of the cigarette maker body 1, so as to discharge the purified air. When the air outlet 112 is arranged at the bottom of the cigarette machine main body 1, it is usually arranged at the bottom of the smoke collecting hood 12; it will be appreciated that the clean air duct is also partially disposed within the hood 12 at this time. Optionally, the air outlet direction of the air outlet 112 is adjustable; thus, the air outlet direction can be changed to satisfy more air outlet requirements of the user on the air outlet 112, for example, the requirements of users with different heights for direct blowing or non-direct blowing can be satisfied.

Referring to fig. 5 and fig. 6 together, optionally, the air purifying device 2 further includes a wind guiding blade 100, the wind guiding blade 100 is rotatably disposed at the air outlet 112, so as to adjust the wind outlet direction of the air outlet 112 by rotating the wind guiding blade 100, and the wind outlet direction of the air outlet 112 is continuously adjustable. However, the design is not limited to this, and in other embodiments, a plurality of air guiding frames for fixing the air guiding blades 100 may be installed on the air outlet 112, and the air guiding frames are configured, and the inclination angles of the air guiding blades 100 of different air guiding frames are different, so that the air outlet direction of the air outlet 112 can be changed by replacing different air guiding frames.

When the air outlet 112 is arranged on the front surface of the decorative cover 11, optionally, for the technical scheme that the air guide vane 100 is rotatable, the air guide vane 100 extends along the transverse direction, and in the rotating process of the air guide vane 100, the included angle between the air guide vane 100 and the horizontal plane ranges from-90 degrees to 90 degrees; it can be understood that when the included angle between the wind guide vane 100 and the horizontal plane is less than zero, it indicates that the wind guide vane 100 is inclined downward for guiding wind, and when the included angle between the wind guide vane 100 and the horizontal plane is greater than or equal to zero, it indicates that the wind guide vane 100 is inclined upward for guiding wind; in this embodiment, the air guiding direction of the air guiding blade 100 can be continuously adjusted from approximately vertical downward to approximately vertical upward.

Further optionally, an included angle between the air guide vane 100 and the horizontal plane ranges from-45 ° to 45 °, and under the included angle, the air guide direction of the air guide vane 100 can ensure a larger ventilation rate of the air outlet 112 while considering a user breathing area and an oil smoke accumulation area in front of and above the range hood; it can be understood that the wind resistance generated by the wind guide vane 100 is larger as the included angle between the wind guide vane 100 and the horizontal plane is closer to-90 ° or 90 °.

In other embodiments, the angle between the wind-guiding blade 100 and the horizontal plane may range from 30 ° to 75 °. It can be understood that, in this rotation range, the wind guiding vanes 100 are all extending obliquely upward, so that the wind blown out from the wind outlet 112 is mainly delivered in an obliquely upward direction, and thus has a large upward wind outlet component, and the upward wind outlet component can push the oil smoke in the upper half part of the kitchen space to flow downward, so as to be sucked and purified by the wind inlet 111, and thus the oil smoke in the upper half part of the kitchen space is taken into the air circulation purification (as shown in fig. 9), which can further reduce the oil smoke in the kitchen.

During cooking, edible oil and food undergo a series of chemical reactions such as oxidation, cracking and polymerization at high temperature, a large amount of organic smoke is evaporated, and partial decomposition products are emitted into air in the form of oil mist to form oil smoke. The oil fume includes both edible oil and its heating decomposition or cracking product and also includes the physical and chemical reaction product of protein, polymer compound and various seasoning matters in food, and is one kind of matter containing gas, liquid and solid. Generally, the Particulate Matter Emission (PME) composed of liquid and solid in the oil smoke emission is defined as PME, and the Volatile Organic Compounds emission (VOCs) is defined as VOCs, and the oil smoke is composed of the above two substances.

In one embodiment, the filter 22 includes a HEPA filter 221 (high efficiency air filter) and an activated carbon filter 222 (see fig. 3). The HEPA filter screen 221 is mainly used for filtering particulate matters (liquid and solid) in oil smoke, and the material of the HEPA filter screen can comprise PP filter paper (polypropylene filter paper), glass fiber, PTFE filter paper (polytetrafluoroethylene filter paper), nano fiber, melt-blown polyester non-woven fabric and the like, so that the HEPA filter screen has the characteristics of large dust holding capacity and high filter precision, the filter efficiency of the oil smoke particulate matters can exceed 90%, and the HEPA filter screen can be processed into required size and shape according to the machine type requirements. The activated carbon filter screen 222 is mainly used for filtering volatile organic compounds (smell) in the oil smoke, and the material of the activated carbon filter screen may include activated carbon fibers, activated carbon particles, and the like, and the adopted activated carbon material may be coconut shells, fruit shells, coal-based carbon, and the like, which has a large specific surface area, or the adopted activated carbon material may be a molecular sieve material, which has a good adsorption effect. Optionally, the HEPA filter 221 is located upstream of the activated carbon filter 222 in the airflow direction, so that the particles in the oil smoke are prevented from adhering to the activated carbon filter 222, thereby prolonging the service life of the activated carbon filter 222.

Optionally, in the direction of the air flow, the filter element 22 is located upstream of the purge fan 23; so, can make the air current through purification fan 23 be the air current after the purification, avoid the oil smoke to be in purification fan 23 is last to gather, prolongs purification fan 23 life-span.

Referring to fig. 1 to 4, 7 and 8, in an embodiment, the decoration cover 11 is provided with a filter mounting port 113, and the filter 22 is detachably disposed on the purification air duct through the filter mounting port 113; in this manner, removal, cleaning or replacement of the filter element 22 may be facilitated. It will be appreciated that the filter element 22 generally has a certain life, for example, the HEPA filter 221 used in the present embodiment has a design life of generally more than 1 month, and needs to be replaced after the life is reached, so as to ensure the good purification capability of the air purification apparatus 2, and in addition, the filter element is periodically or aperiodically removed for cleaning or cleaning, which is beneficial to prolong the life.

Optionally, a filter cover 24 is arranged on the filter mounting port 113; so, will filter piece 22 certainly filter a mounting hole 113 and pack into and purify the wind channel after, will filter a lid 24 lid and close and filter a mounting hole 113, can avoid filtering piece 22 and shake out, improve the structural stability of product, can also avoid foreign matter etc. to get into from filtering a mounting hole 113 simultaneously and purify in the wind channel.

Optionally, the air purifying device 2 further includes a purifying housing 21 disposed in the decorative cover 11, the purifying air duct is at least partially defined by the purifying housing 21, and the purifying housing 21 is provided with an air inlet 211 communicating with the air inlet 111 and an air outlet 212 communicating with the air outlet 112. It can be understood that the independent purifying shell 21 can limit the purifying air channel more accurately, so as to guide the trend of the purifying air flow accurately and improve the purifying efficiency, and in addition, the purifying shell 21 can more conveniently provide attachment for the filtering element 22 and the purifying fan 23; however, the design is not limited to this, and in other embodiments, a partition plate or the like may be simply provided in the decoration cover 11 to separate the purification air duct. Without loss of generality, the purifying housing 21 is provided with a mounting through hole 213 corresponding to the filter mounting hole 113, and the filter 22 is detachably connected with the purifying housing 21 through the filter mounting hole 113 and the mounting through hole 213.

In this embodiment, the filter cover 24 provided in the filter attachment port 113 is connected to the purge case 21. However, the design is not limited thereto, and in other embodiments, the filter cover 24 may be connected to the decorative cover 11. In addition, in this embodiment, optionally, one side of the filter cover 24 is rotatably connected to the purifying housing 21, and the other side is detachably connected to the purifying housing 21; in this way, after the filter cover 24 is opened, the filter cover 24 is still attached to the purge housing 21, and the filter cover 24 is prevented from being lost. Further alternatively, the other side of the filter cover 24 can be connected to the purification housing 21, but not limited thereto, by a push-type snap switch assembly, so that the filter cover 24 can be opened and closed by pressing, which is convenient.

Optionally, the filter element 22 is provided in the purification housing 21 in a drawable manner; it will be appreciated that removal cleaning or replacement of the filter element 22 can be more easily performed by means of pulling. Optionally, a guide rail 216 is provided in the purification housing 21, which extends toward the mounting opening 213, and the filter element 22 is inserted into the purification housing 21 along the guide rail 216; the guide rail 216 has a good guiding and mounting function, and can facilitate the drawing, dismounting and mounting of the filter member 22.

Referring to fig. 2-6, in one embodiment, the range hood body 1 further includes a fan guard 13 disposed within the trim cover 11, the range hood duct being at least partially defined by the fan guard 13, and the purge housing 21 being disposed on a front side of the fan guard 13. In this embodiment, the purifying housing 21 is located on the front surface of the fan housing 13, so that the purifying housing 21 is located closer to the air outlet 112 on the decorative cover 11, thereby shortening the distance between the purifying housing 21 and the air outlet 112, facilitating the communication between the air outlet 212 on the purifying housing 21 and the air outlet 112, and increasing the wind speed of the purified air blown from the air outlet 112 to supply more air. Optionally, the purification shell 21 can be detachably connected to the front side of the fan guard 13, that is, the purification shell 21 is attached to the fan guard 13 for installation, compared with the technical solution that the purification shell 21 is attached to the decoration cover 11 for installation, the technical solution can reduce the probability of deformation of the decoration cover 11, and meanwhile, the detachable installation of the purification shell 21 can facilitate the replacement of the internal devices thereof.

Optionally, the purification fan 23 is a centrifugal fan, on one hand, the centrifugal fan has a large air volume and a small noise, so that far air supply can be realized at a low noise; on the other hand, the centrifugal fan has the function of changing the wind direction (axial air inlet and radial air outlet), and is favorable for realizing air inlet and positive air outlet at two sides.

Further, a centrifugal volute 214 for installing a centrifugal fan is arranged in the purification housing 21, an air outlet side of the centrifugal volute 214 faces downward and is bent forward to extend an air guide section 215, and the air guide section 215 extends to a position connected with the air outlet 112. It can be understood that the end of the wind guiding section 215 away from the centrifugal volute 214 is provided with the wind outlet 212. In this embodiment, the air guide section 215 extending by bending can supply air forward when the axial direction of the centrifugal fan is perpendicular or nearly perpendicular to the fan cover 13, and at this time, the installation space in the front-rear direction required by the centrifugal fan is small. It will be appreciated that if the radial direction of the centrifugal fan is perpendicular or nearly perpendicular to the fan guard 13, the forward or rearward installation space required for the centrifugal fan is relatively large, since the diameter of the centrifugal fan is typically greater than or equal to the axial thickness of the centrifugal fan. Optionally, the centrifugal volute 214 includes a volute body and a volute cover that are joined to facilitate installation of the centrifugal fan into the centrifugal volute 214.

The invention also provides a control method of the range hood. Referring to fig. 10, fig. 10 is a schematic flow chart of a control method of a range hood according to a first embodiment of the present invention.

The control method of the range hood of the embodiment adopts the range hood in each embodiment. The control method of the range hood comprises the following steps:

step S110, acquiring the current detection result of the human signal detection device in real time; and

and step S120, adjusting the air outlet volume corresponding to the air purification device according to the detection result of the human signal detection device.

In this embodiment, when the range hood main body 1 is in the operating state, the human signal detection device 4 may detect human signals in the environment where the range hood is located in real time, and the controller 3 acquires the detection result of the human signal detection device 4 in real time. Then, the air outlet volume corresponding to the air purification device 2 is adjusted according to the detection result, so that the air outlet volume of the air purification device 2 is adjusted according to the user condition in the environment where the range hood is located, specifically, the user in the environment where the range hood is located is judged according to the detection result, the air outlet volume of the air purification device 2 is adjusted to be smaller by the controller 3, and if the user in the environment where the range hood is located is judged to be absent according to the detection result, the air outlet volume of the air purification device 2 is adjusted to be larger by the controller 3; the intelligent control of the air outlet volume of the air purification device is realized, the intelligence of the range hood is improved, the comfort experience of a user due to the fact that the air volume 2 of the air purification device is too large when the user cooks can be avoided, and the low oil smoke absorption efficiency of the range hood due to the fact that the user is not located in a kitchen and the air volume of the air purification device is too small can be avoided.

In one embodiment, step S120 includes:

step S121, determining whether a user exists in the environment where the range hood is located or not based on the detection result;

step S122, if it is determined that a user exists in the environment where the range hood is located according to the detection result, adjusting the air outlet volume corresponding to the air purification device based on a first preset air volume; and

step S123, if it is determined that no user exists in the environment where the range hood is located according to the detection result, adjusting the air outlet volume corresponding to the air purification device based on a second preset air volume; and the second preset air volume is larger than the first preset air volume.

The second preset air outlet volume is greater than the first preset air outlet volume, for example, the second preset air outlet volume is the maximum air outlet volume of the air purification device 2, and the first preset air outlet volume is less than half of the maximum air outlet volume of the air purification device 2.

Specifically, when the range hood main body 1 of the range hood runs, the detection result of the person signal detection device 4 is obtained in real time, and whether a user exists in the environment where the range hood is located is judged according to the detection result. If there is the user in the environment that range hood is located, then adjust the air-out amount of wind that air purification device corresponds based on first predetermineeing the amount of wind, for example, when range hood is in the running state, if confirm that there is the user in the environment that range hood is located through personage's signal detection device 4's testing result, adjust the air-out amount of wind that air purification device corresponds based on first predetermineeing the amount of wind to realize automatically adjusting the air-out amount of wind of air purification device 2 to less amount of wind, avoid influencing user's travelling comfort experience because of user's air purification device's amount of wind 2 is too big when cooking, and then promote user experience. If there is not the user in the environment that range hood is located, for example, when cigarette machine main part 1 and air purification device 2 are all in the running state, if the user leaves the kitchen, then controller 3 predetermines the amount of wind based on the second and adjusts the amount of wind that air purification device 2 corresponds to make air purification device 2 operate according to great amount of wind, promote the efficiency that range hood inhales the oil smoke.

Optionally, step S122 includes: .

Step a, acquiring the current detected environmental temperature of a temperature detection device in real time; and

and b, if the environment temperature is lower than the preset environment temperature and the user is determined to exist in the environment where the range hood is located according to the detection result, the controller adjusts the air outlet volume corresponding to the air purification device based on the first preset air volume and adjusts the air outlet direction of the air purification device to be upward blowing.

In this embodiment, the ambient temperature detected by the temperature detection device can be obtained in real time, and it is determined that the ambient temperature is less than the preset ambient temperature. If the ambient temperature is lower than the preset ambient temperature, and the user is present in the environment where the range hood is located according to the detection result, the controller 3 adjusts the air outlet volume corresponding to the air purification device 2 based on the first preset air volume, and adjusts the air outlet direction of the air purification device 2 into upward blowing, so that the air outlet volume is reduced while the air outlet direction of the air purification device 2 is adjusted, the situation that the user feels cold when the air purification device 2 directly blows to the user is avoided, and the body feeling comfort level of the user is improved. The preset ambient temperature may be set by a user, for example, the preset ambient temperature is 20 ℃, 22 ℃, etc.

In another embodiment, after step a, step S122 further includes:

and d, if the environment temperature is higher than the preset environment temperature and the user exists in the environment where the range hood is located is determined according to the detection result, the controller adjusts the air outlet volume corresponding to the air purification device based on the first preset air volume and adjusts the air outlet direction of the air purification device to be downward blowing.

In this embodiment, if ambient temperature is greater than this and predetermines ambient temperature, and there is the user in the range hood environment, then based on first air regulation of predetermineeing the air-out amount of wind that air purification device 2 corresponds, and control air purification device 2 blows downwards, and then when ambient temperature is higher, through controlling air purification device 2 to blow downwards when reducing the air-out amount of wind to make air purification device 2's air-out directly blow to the user, can reduce user's body surface temperature when avoiding user's sensation wind too big, and then promote user's body sensation travelling comfort, promote user's comfortable nature and experience.

Alternatively, the human signal detection device includes an image pickup device, the detection result includes an image currently captured by the image pickup device, and step S121 includes: .

Step e, carrying out image recognition on the image to obtain an image recognition result; and f, determining whether the environment of the range hood has a user according to the image recognition result.

In this embodiment, when an image currently captured by the camera device is obtained, a person recognition algorithm is used to perform image recognition on the image to obtain an image recognition result, and then whether a user exists in the environment where the range hood is located is determined according to the image recognition result, wherein the image recognition result includes whether a person image exists in the image, if the image recognition result is that a person image exists in the image, the user exists in the environment where the range hood is located is determined, and if the image recognition result is that a person image does not exist in the image, the user does not exist in the environment where the range hood is located is determined, so that whether a user exists in the environment where the range hood is located can be accurately determined according to the image currently captured by the camera device, and the accuracy of controlling the air purification device 2 is improved.

According to the control method of the range hood provided by the embodiment, the current detection result of the person signal detection device is obtained in real time; and then adjusting the air outlet volume corresponding to the air purification device according to the detection result of the character signal detection device, adjusting the air outlet volume corresponding to the air purification device according to the detection result to realize the adjustment of the air outlet volume of the air purification device according to the user condition in the environment where the range hood is located, realizing the intelligent control of the air outlet volume of the air purification device, improving the intelligence of the range hood, and further avoiding the influence on the comfort experience of the user due to the overlarge air volume of the air purification device during cooking of the user and the low oil smoke absorption efficiency of the range hood due to the undersize air volume of the air purification device when the user is not in a kitchen.

The invention further provides a computer readable storage medium, wherein a control program of the range hood is stored on the computer readable storage medium, and the control program of the range hood realizes the steps of the control method of the range hood when being executed by the processor. Since the computer-readable storage medium adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and are not described in detail herein.

It should be noted that the technical solutions of the embodiments of the present invention can be combined with each other, but must be based on the realization of the technical solutions by those skilled in the art, and when the technical solutions are contradictory or can not be realized, the combination of the technical solutions should be considered to be absent and not to be within the protection scope of the present invention.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, are included in the scope of the present invention.

Claims

1. A range hood, comprising:

a cigarette machine main body; and

2. The range hood according to claim 1, wherein if it is determined according to the detection result that the user is present in the environment where the range hood is located, the controller adjusts an air outlet volume corresponding to the air purification device based on a first preset air volume; and

3. The range hood of claim 2, further comprising a temperature detection device for detecting an ambient temperature of an environment in which the range hood is located;

4. The range hood according to claim 3, wherein if the ambient temperature is greater than a predetermined ambient temperature and it is determined that the user is present in the environment where the range hood is located according to the detection result, the controller adjusts an air output volume corresponding to the air purifying device based on a first predetermined air volume and adjusts an air output direction of the air purifying device to blow downward.

5. The range hood of claim 4, wherein the human signal detection device comprises a camera device, an infrared sensor, a proximity sensor or a displacement sensor.

6. The range hood according to claim 5, wherein when the human signal detection device comprises a camera device, the detection result comprises an image currently captured by the camera device;

7. The range hood according to any one of claims 1 to 6, wherein the range hood main body comprises a decorative cover and a smoke collecting cover arranged below the decorative cover, and a range hood duct is arranged in the decorative cover.

8. The range hood of claim 7, wherein the air inlet is disposed on a side of the decorative cover; alternatively, the first and second electrodes may be,

the air inlet is arranged at the upper part of the front side of the decorative cover; alternatively, the first and second electrodes may be,

the air inlet is formed in the top of the cigarette machine main body.

9. The range hood of claim 8, wherein the air outlet is disposed on the front surface of the decorative cover; alternatively, the first and second electrodes may be,

the air outlet is arranged on the side surface of the decorative cover; alternatively, the first and second electrodes may be,

the air outlet is formed in the top of the cigarette machine main body; alternatively, the first and second electrodes may be,

the air outlet is arranged at the bottom of the cigarette machine main body.

10. A control method of a range hood, which is applied to the range hood of any one of claims 1 to 9, the control method of the range hood comprising the steps of:

acquiring a current detection result of the person signal detection device in real time; and

11. The control method of the range hood according to claim 10, wherein the step of adjusting the amount of outlet air corresponding to the air purifying device according to the detection result of the human signal detection device comprises:

12. The method for controlling a range hood according to claim 11, wherein if it is determined that the user exists in the environment where the range hood is located according to the detection result, the step of adjusting the air output volume corresponding to the air purifying device based on a first preset air output volume includes:

acquiring the current detected environmental temperature of the temperature detection device in real time; and

13. The control method of a range hood according to claim 12, wherein after the step of obtaining the ambient temperature currently detected by the temperature detection device in real time, the method further comprises:

14. The control method of the range hood according to any one of claims 11 to 13, wherein the human signal detection device comprises a camera device, the detection result comprises an image currently captured by the camera device, and the step of determining whether the user is present in the environment of the range hood based on the detection result comprises:

performing image recognition on the image to obtain an image recognition result; and

15. A computer-readable storage medium, characterized in that the computer-readable storage medium stores thereon a control program of a range hood, which when executed by a processor implements the steps of the control method of a range hood as recited in any one of claims 10 to 14.