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

Abstract

The application discloses an extractor hood and a control method and a computer readable storage medium thereof, wherein the extractor hood comprises: a hood main body, an air purification device, a human signal detection device for detecting a human signal in an environment where the extractor hood is located, and a controller electrically connected with the human signal detection device and the air purification device respectively; the controller is used to determine height data of a user in the environment where the extractor hood is located according to a detection result detected by the human signal detection device, and adjust an air outlet air volume corresponding to the air purification device based on the height data. The technical scheme of the application realizes the adjustment of the air outlet air volume of the air purification device according to the height data of the user in the environment where the extractor hood is located, so as to realize the intelligent control of the air outlet air volume of the air purification device, improve the intelligence of the extractor hood, and further avoid the influence of the comfort experience of the user caused by the excessive air volume of the air purification device when the user cooks.

Description

TECHNICAL FIELD

[0001] The present application 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

[0002] During cooking, edible oil and food undergo a series of chemical reactions such as oxidation, cracking, and polymerization at high temperatures, and a large amount of organic fumes are evaporated, part of which is dispersed into the air in the form of oil mist to form oil fumes. The so-called oil fumes include not only edible oil and its products of heating decomposition or cracking, but also the products of physical and chemical reactions of proteins, macromolecular compounds and various seasonings in food, which is a substance containing gas, liquid and solid in three states. Research shows that the composition of oil fumes is quite complex, and at present, at least 200 components have been detected, and the specific components will vary depending on the cooking conditions, mainly including unsaturated hydrocarbons, saturated hydrocarbons, fatty acids, aldehydes, ketones, alcohols, esters, aromatic compounds and heterocyclic compounds. The particle size of the settleable particles in the oil fumes mainly ranges from 10 to 400 μm. These particles will settle to the ground and other locations due to their own gravity and the interaction between particles, causing persistent pollution to the kitchen air environment. Oil fume pollution and its damage to human health have become a problem of indoor environment that has attracted attention.

[0003] At present, the range hood can quickly discharge most of the oil fumes generated during the cooking process and the waste gas of the stove combustion to the outdoor, reducing the pollution to the air environment in the kitchen. However, when the user cooks in the kitchen, the high temperature and humid environment generated during frying often cause the cook's skin surface to sweat and become greasy, resulting in a low comfort experience for the user. SUMMARY

[0004] To further reduce the pollution of oil fumes to the air environment in the kitchen and the damage to human health, the range hood of the present application adds an air purification device to the main body of the range hood to inhale and purify the oil fumes dispersed into the kitchen space through the air purification device. However, during cooking, the air purification device often runs continuously at a certain air volume. For example, if the air volume of the air purification device is too large, the user's body comfort will be low, and the control process of the range hood will not be intelligent.

[0005] To achieve the above-mentioned purpose, the range hood provided by the present application comprises:

[0006] a main body of the range hood; and

[0007] an air purification device provided with a purification air duct, a filter and a purification fan arranged in the purification air duct;

[0008] The outer surface of the smoke machine body is provided with an air inlet communicated with the purification air duct and an air outlet communicated with the purification air duct.

[0009] The character signal detection device is used for detecting a character signal in the environment of the extractor hood.

[0010] The controller is electrically connected with the character signal detection device and the air purification device respectively.

[0011] The controller is used to determine the height data of the user in the environment of the extractor hood according to the detection result of the character signal detection device, and adjust the corresponding air outlet air volume of the air purification device based on the height data.

[0012] On the one hand, through the cooperation of the air purification device and the smoke machine body, most of the oil fume can be discharged outdoors, and a small part of the oil fume can be recycled, purified and removed, thereby further reducing the pollution of the oil fume to the air environment and the harm of the oil fume to human health; on the other hand, by adjusting the corresponding air outlet air volume of the air purification device according to the height data of the user, the air outlet air volume of the air purification device is adjusted according to the height data of the user in the environment of the extractor hood, so as to realize the intelligent control of the air outlet air volume of the air purification device, improve the intelligence of the extractor hood, and thus the comfort experience of the user can be avoided due to the excessive air volume of the air purification device during cooking.

[0013] Optionally, the controller obtains a preset air outlet air volume corresponding to the height data, and adjusts the corresponding air outlet air volume of the air purification device based on the preset air outlet air volume.

[0014] In this way, the corresponding air outlet air volume of the air purification device is adjusted by the preset air outlet air volume corresponding to the height, so as to improve the accuracy of the air volume adjustment.

[0015] Optionally, if the height data is less than a first preset height, the controller determines that the preset air outlet air volume is the first preset air outlet air volume; and

[0016] If the height data is greater than or equal to the first preset height and less than a second preset height, the controller determines that the preset air outlet air volume is the second preset air outlet air volume.

[0017] If the height data is greater than or equal to the second preset height, the controller determines that the preset air outlet air volume is the third preset air outlet air volume.

[0018] The first preset air outlet air volume is greater than the second preset air outlet air volume, and the second preset air outlet air volume is greater than the third preset air outlet air volume.

[0019] Therefore, the air purification device corresponding to the preset air volume corresponding to the height of the user is adjusted, and the accuracy of the air volume adjustment is further improved.

[0020] Optionally, the human signal detection device comprises a camera, an infrared sensor, an ultrasonic sensor or a TOF sensor.

[0021] Therefore, the accuracy of the height data detection is improved, and the accuracy of the air volume adjustment is further improved.

[0022] Optionally, when the human signal detection device comprises a camera, the detection result comprises an image currently captured by the camera.

[0023] The controller performs image recognition on the image to obtain an image recognition result, and determines the height data according to the image recognition result.

[0024] Therefore, the air purification device can be accurately controlled through the image, and the control accuracy of the air purification device is improved.

[0025] Optionally, if it is determined according to the detection result that there is a user in the environment of the range hood, the controller determines height data of the user in the environment of the range hood based on the detection result.

[0026] Therefore, the air purification device is adjusted when the user is in the cooking area, and the intelligence of the range hood is further improved.

[0027] Optionally, if it is determined according to the detection result that there is no user in the environment of the range hood, the controller controls the air purification device based on a fourth preset air volume, wherein the ratio of the fourth preset air volume to the maximum air volume of the air purification device is greater than a preset ratio, and the preset ratio ranges from 75% to 100%.

[0028] Therefore, when the user is not in the cooking area, the air purification device outputs a large air volume, and the oil fume extraction efficiency of the range hood is improved.

[0029] Optionally, the range hood body comprises a decorative cover and a smoke collecting cover arranged below the decorative cover, and the decorative cover is provided with an oil fume duct.

[0030] Therefore, the air purification device is hidden in the decorative cover, and the appearance of the range hood is more simple.

[0031] Optionally, the air inlet is arranged on the side surface of the decorative cover; or,

[0032] the air inlet is arranged on the upper portion of the front surface of the decorative cover; or,

[0033] The air inlet is arranged on the top of the smoke machine body.

[0034] In this way, the air inlet is arranged on the upper part of the front face of the decorative cover or the top of the smoke machine body, so as to facilitate the suction of the oil fume accumulated in the upper space of the kitchen due to the thermal plume effect.

[0035] Optionally, the air outlet is arranged on the front face of the decorative cover; or,

[0036] the air outlet is arranged on the side face of the decorative cover; or,

[0037] the air outlet is arranged on the top of the smoke machine body; or,

[0038] the air outlet is arranged on the bottom of the smoke machine body.

[0039] In this way, the air outlet is arranged on the side face of the decorative cover or the bottom of the smoke machine body, so that the purified air can also be discharged.

[0040] The application further provides a control method of the smoke machine, which is applied to the smoke machine and comprises the following steps:

[0041] real-time acquisition of the detection result detected by the human signal detection device; and

[0042] determination of the height data of the user in the environment of the smoke machine according to the detection result, and adjustment of the air outlet air volume of the air purification device based on the height data.

[0043] On the one hand, through the cooperation of the air purification device and the smoke machine body, most of the oil fume can be discharged outdoors, and a small part of the oil fume can be recycled, purified and removed, so as to further reduce the pollution of the oil fume to the air environment and the damage of the oil fume to human health; on the other hand, the air outlet air volume of the air purification device is adjusted according to the height data of the user, so as to adjust the air outlet air volume of the air purification device according to the height data of the user in the environment of the smoke machine, to realize the intelligent control of the air outlet air volume of the air purification device, improve the intelligence of the smoke machine, and thus avoid affecting the comfort experience of the user due to the excessive air volume of the air purification device when the user cooks.

[0044] Optionally, the step of adjusting the air outlet air volume of the air purification device based on the height data comprises:

[0045] acquisition of the preset air outlet air volume corresponding to the height data, and adjustment of the air outlet air volume of the air purification device based on the preset air outlet air volume.

[0046] In this way, the air outlet air volume of the air purification device is adjusted through the preset air outlet air volume corresponding to the height, so as to improve the accuracy of the air volume adjustment.

[0047] Optionally, the step of the controller acquiring the preset airflow volume corresponding to the height data includes:

[0048] If the height data is less than the first preset height, then the preset air outlet volume is determined to be the first preset air outlet volume; and

[0049] If the height data is greater than or equal to the first preset height and less than the second preset height, then the preset air volume is determined to be the second preset air volume.

[0050] If the height data is greater than or equal to the second preset height, then the preset air volume is determined to be the third preset air volume;

[0051] Wherein, the first pre-outlet air volume is greater than the second pre-outlet air volume, and the second pre-outlet air volume is greater than the third pre-outlet air volume.

[0052] In this way, by adjusting the airflow of the air purifier according to the preset airflow volume corresponding to each height, the accuracy of airflow adjustment is further improved.

[0053] Optionally, the human signal detection device includes a camera device, and the detection result includes an image currently captured by the camera device; the step of determining the user's height data in the environment where the range hood is located based on the detection result includes:

[0054] The image is subjected to image recognition to obtain the image recognition result, and the height data is determined based on the image recognition result.

[0055] In this way, the air purifier can be accurately controlled through images, thus improving the control accuracy of the air purifier.

[0056] Optionally, the step of determining the user's height data in the environment where the range hood is located based on the detection results includes:

[0057] Based on the detection results, determine whether there are users in the environment where the range hood is located; and

[0058] If, based on the detection results, it is determined that there is a user in the environment where the range hood is located, then the height data of the user in the environment where the range hood is located is determined based on the detection results.

[0059] In this way, the air purification device can be adjusted when the user is in the cooking area, further enhancing the intelligence of the range hood.

[0060] Optionally, after determining whether a user exists in the environment where the range hood is located based on the detection results, the method further includes:

[0061] If it is determined according to the detection result that there is no user in the environment where the range hood is located, the air purification device is controlled based on a fourth preset air volume, wherein the ratio of the fourth preset air volume to the maximum air volume of the air purification device is greater than a preset ratio, and the preset ratio ranges from 75% to 100%.

[0062] In this way, when the user is not in the cooking area, the air purification device outputs a large air volume, thereby improving the oil fume suction efficiency of the range hood.

[0063] The application 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, when executed by a processor, implements the steps of the control method of the range hood.

[0064] The range hood of the application has the following advantages. On the one hand, the air purification device is additionally arranged on the basis of the range hood body, so that when the air purification device and the range hood body work cooperatively, most of the oil fume generated in the cooking process can be discharged to the outdoor through the range hood air duct, and a small part of the oil fume can escape to other spaces in the kitchen, and this small part of the oil fume can be further removed through the purification air duct, thereby further reducing the pollution of the oil fume to the air environment and the damage of the oil fume to human health. On the other hand, the air volume of the air purification device is adjusted according to the height data of the user, so as to adjust the air volume of the air purification device according to the height data of the user in the environment where the range hood is located, to realize the intelligent control of the air volume of the air purification device, to improve the intelligence of the range hood, and to avoid affecting the comfort experience of the user due to the excessive air volume of the air purification device when the user cooks. BRIEF DESCRIPTION OF DRAWINGS

[0065] Figure 1 FIG. 1 is a structural schematic view of the range hood according to an embodiment of the application from one perspective;

[0066] Figure 2 FIG. 2 is a structural schematic view of the range hood according to the embodiment of the application after the decorative cover and the filter element are removed; Figure 1

[0067] Figure 3 FIG. 4 is an exploded structural schematic view of the range hood according to the embodiment of the application; Figure 1

[0068] Figure 4 FIG. 6 is an enlarged schematic view of position A in FIG. 5; Figure 3

[0069] Figure 5 FIG. 8 is a partial cross-sectional structural schematic view of the range hood according to the embodiment of the application from another perspective; Figure 1

[0070] Figure 6 FIG. 10 is a structural schematic view of the range hood according to the embodiment of the application from another perspective.​​​​Figure 5 An enlarged schematic view at B;

[0071] Figure 7 For Figure 1 A partial cross-sectional structural schematic view of the range hood from another perspective;

[0072] Figure 8 For Figure 7 An enlarged schematic view at C;

[0073] Figure 9 For Figure 1 An air circulation path schematic view of the range hood;

[0074] Figure 10 A flow schematic view of the control method of the range hood according to the present application.

[0075] BRIEF DESCRIPTION OF DRAWINGS

[0076]

[0077]

[0078] The implementation of the present application, functional features and advantages will be further described with reference to the accompanying drawings. DETAILED DESCRIPTION

[0079] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0080] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications will also change accordingly.

[0081] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0082] The present application provides a range hood.

[0083] Referring to Figures 1 to 3 In an embodiment of the present application, the range hood comprises:

[0084] The present application provides a range hood.

[0085] The air purification device 2 is provided with a purification air duct, a filter 22 and a purification fan 23 arranged in the purification air duct;

[0086] The outer surface of the range hood body 1 is provided with an air inlet 111 communicating with the purification air duct, and an air outlet 112 communicating with the purification air duct;

[0087] The person signal detection device 4 is used to detect the person signal in the environment where the range hood is located;

[0088] The controller 3 is electrically connected with the person signal detection device 4 and the air purification device 2 respectively;

[0089] The controller 3 is used to determine the height data of the user in the environment where the range hood is located according to the detection result of the person signal detection device, and adjust the corresponding air outlet air volume of the air purification device based on the height data.

[0090] In the embodiment, the range hood body 1 is provided with an oil fume air duct, the purification air duct of the air purification device 2 is not communicated with the oil fume air duct, and the purification fan 23 is arranged in the purification air duct. The oil fume inlet of the oil fume air duct is communicated with the indoor, and is usually suspended above the cooking utensil 5 in the kitchen, so as to suck the oil fume into the oil fume air duct; the oil fume outlet of the oil fume air duct is communicated with the outdoor, so as to discharge the oil fume to the outdoor; of course, the oil fume fan is arranged in the oil fume air duct, so as to make the airflow flow from the oil fume inlet to the oil fume outlet. It can be understood that the range hood body 1 has the function of the traditional range hood.

[0091] The purification fan 23 of the air purification device 2 is used to make the air flow from the air inlet 111 to the air outlet 112 through the purification air duct. The air inlet 111 and the air outlet 112 are both connected to the indoor space. The air inlet 111 is used to suck the air in the kitchen, the filter 22 of the air purification device 2 is used to filter and purify the sucked air, and the air outlet 112 is used to discharge the filtered and purified air back to the kitchen. When the air purification device 2 works with the smoke machine main body 1, most of the oil fume generated during the cooking process is discharged to the outdoor through the oil smoke air duct, and a small part of the oil fume will escape to other spaces in the kitchen. This small part of the oil fume can be further removed through the purification air duct of the air purification device 2, thereby further reducing the pollution of the oil fume to the air environment and the harm to human health.

[0092] In this embodiment, the controller 3 acquires the detection result of the person signal detection device 4. Preferably, when the smoke machine main body 1 is in the running state, the person signal detection device 4 can detect the person signal in the environment of the smoke machine in real time, and the controller 3 acquires the detection result of the person signal detection device 4 in real time. Then, the controller 3 determines the height data of the user in the environment of the smoke machine according to the detection result detected by the person signal detection device, and adjusts the air outlet air volume of the air purification device 2 based on the height data, so as to adjust the air outlet air volume of the air purification device 2 according to the height data of the user in the environment of the smoke machine. Specifically, if it is judged according to the detection result that there is a user in the environment of the smoke machine, the controller 3 determines the height data of the user according to the detection result, and adjusts the air outlet air volume of the air purification device according to the preset air outlet air volume corresponding to the height data, so as to realize the intelligent control of the air outlet air volume of the air purification device, improve the intelligence of the smoke machine, and further avoid affecting the comfortable experience of the user due to the too large air volume 2 of the air purification device when the user cooks.

[0093] Further, in an embodiment, the controller 3 acquires the preset air outlet air volume corresponding to the height data, and adjusts the air outlet air volume of the air purification device based on the preset air outlet air volume 2.

[0094] In the embodiment, the preset air outlet air volume corresponding to each height data can be set in advance, for example, when the height data is 150 cm, the corresponding air outlet air volume is large air volume, for example, 100 CMH, when the height data is 160 cm, the corresponding air outlet air volume is medium air volume, for example, 80 CMH, and when the height data is 170 cm, the corresponding air outlet air volume is small air volume, for example, 50 CMH. When the height data is obtained, the controller 3 obtains the preset air outlet air volume corresponding to the height data, and adjusts the air outlet air volume of the air purification device 2 based on the preset air outlet air volume, that is, adjusts the air outlet air volume of the air purification device 2 to the preset air outlet air volume, so as to intelligently adjust the air outlet air volume of the air purification device according to the height of the user in the environment where the range hood is located, improve the intelligence of the range hood, and thus avoid affecting the comfort experience of the user due to the too large air volume of the air purification device when the user cooks.

[0095] Optionally, in an embodiment, if the height data is less than the first preset height, the controller 3 determines that the preset air outlet air volume is the first preset air outlet air volume; and if the height data is greater than or equal to the first preset height and less than the second preset height, the controller 3 determines that the preset air outlet air volume is the second preset air outlet air volume; and if the height data is greater than or equal to the second preset height, the controller 3 determines that the preset air outlet air volume is the third preset air outlet air volume; wherein the first preset air outlet air volume is greater than the second preset air outlet air volume, and the second preset air outlet air volume is greater than the third preset air outlet air volume.

[0096] In the embodiment, the first preset height and the second preset height are set in advance, and the first preset height and the second preset height can be reasonably set by the user, that is, the user can set the preset height according to the height of the user, wherein the user can input the preset height through the control panel of the range hood or set the preset height through the mobile terminal in communication connection with the range hood, and the controller 3 determines the first preset height and the second preset height according to the preset height, for example, if the height of the user is 170 cm, the user sets the preset height as 170 cm, and the controller 3 determines that the first preset height is 155 cm and the second preset height is 165 cm.

[0097] It can be understood that each first preset air outlet air volume, second preset air outlet air volume and third preset air outlet air volume can also be reasonably set, specifically, if the maximum air volume of the air purification device is 100 CMH, the first preset air outlet air volume can be set in the range of 85 CMH-100 CMH, the second preset air outlet air volume can be set in the range of 65 CMH-85 CMH, and the third preset air outlet air volume can be set in the range of 40 CMH-60 CMH, for example, the first preset air outlet air volume is 100 CMH, the second preset air outlet air volume is 80 CMH, and the third preset air outlet air volume is 50 CMH.

[0098] In the embodiment, if the height data is less than the first preset height, for example, the height data is 150 cm and the first preset height is 155 cm, it is determined that the distance between the current user and the air outlet of the air purification device 2 is far, at this time, the controller 3 determines that the preset air outlet air volume is the first preset air outlet air volume, so that the air purification device 2 operates according to the larger air outlet air volume, improves the efficiency of the range hood in absorbing oil fume, and further avoids the case that the air volume of the air purification device 2 is too small, the oil fume generated during cooking spreads in the kitchen space, and the oil fume pollution and the health damage to the human body occur, and at the same time, the wind blown by the air outlet blows the user to cool down, and the comfort experience of the user is improved.

[0099] If the height data is greater than or equal to the first preset height and less than the second preset height, for example, the height data is 160 cm, the first preset height is 155 cm, and the second preset height is 165 cm, it is determined that the distance between the current user and the air outlet of the air purification device 2 is in the middle, at this time, the controller 3 determines that the preset air outlet air volume is the second preset air outlet air volume, so that the air purification device 2 operates according to the medium air outlet air volume, avoids the case that the air volume of the air purification device 2 is too small, the oil fume generated during cooking spreads in the kitchen space, and the oil fume pollution and the health damage to the human body occur, at the same time, reduces the energy consumption of the range hood, and the wind blown by the air outlet blows the user to cool down, and the comfort experience of the user is improved.

[0100] If the height data is greater than or equal to the second preset height, for example, the height data is 170 cm and the second preset height is 165 cm, it is determined that the distance between the current user and the air outlet of the air purification device 2 is close, at this time, the controller 3 determines that the preset air outlet air volume is the third preset air outlet air volume, so that the air purification device 2 operates according to the smaller air outlet air volume, and further avoids the case that the air volume of the air purification device 2 is too large, which affects the comfort of the user and reduces the energy consumption of the range hood.

[0101] It should be noted that the person signal detection device 4 in the embodiment includes a camera, an infrared sensor, an ultrasonic sensor or a TOF sensor.

[0102] In the embodiment, when the controller 3 obtains the image currently captured by the camera, the controller 3 performs image recognition on the image by using a person recognition algorithm to obtain an image recognition result, and then determines whether there is a user in the environment of the range hood according to the image recognition result. The image recognition result includes whether there is a person image in the image, and if there is, the height data of the user is determined according to the person image.

[0103] Further, in an embodiment, if it is determined according to the detection result that there is a user in the environment of the range hood, the controller 3 determines the height data of the user in the environment of the range hood based on the detection result. By adjusting the air volume of the air purification device 2 when there is a user in the environment of the range hood, the intelligence of the range hood is improved.

[0104] Alternatively, if it is determined according to the detection result that there is no user in the environment of the range hood, the controller controls the air purification device based on a fourth preset air volume. The ratio of the fourth preset air volume to the maximum air volume of the air purification device is greater than a preset ratio, and the preset ratio ranges from 75% to 100%.

[0105] In the embodiment, if there is no user in the environment of the range hood, the controller 3 controls the air purification device 2 based on a fourth preset air volume, i.e., adjusts the air volume of the air purification device 2 to the fourth preset air volume. By controlling the air purification device 2 to operate at a large air volume, the purification efficiency of the oil fume in the kitchen is improved, and the effect of the range hood main body 1 on absorbing oil fume is improved, thereby avoiding the situation that the oil fume generated during cooking spreads in the kitchen space due to the small air volume of the air purification device 2, causing oil fume pollution and harm to human health.

[0106] Alternatively, in some other embodiments, the person signal detection device 4 can be arranged on the front surface of the smoke collecting cover 12 or the decorative cover 11. It can be understood that during cooking, the user is located below the side of the range hood main body 1. Arranging the person signal detection device 4 on the front surface of the smoke collecting cover 12 or the decorative cover 11 facilitates detecting the person signal in the environment of the range hood, and further improves the accuracy of adjusting the air direction of the air purification device 2.

[0107] However, the design is not limited to this, and in other embodiments, the person signal detection device 4 can be arranged on the front surface of the smoke collecting cover 12 or the decorative cover 11. It can be understood that during cooking, the user is located below the side of the range hood main body 1. Arranging the person signal detection device 4 on the front surface of the smoke collecting cover 12 or the decorative cover 11 facilitates detecting the person signal in the environment of the range hood, and further improves the accuracy of adjusting the air direction of the air purification device 2. Figure 2, the air purification device 2 can also be arranged outside the smoke machine body 1, for example but not limited to being fixed on the front surface of the decorative cover 11. In still other embodiments, the air purification device 2 can also be arranged without being attached to the smoke machine body 1, that is, the air purification device 2 is movable relative to the smoke machine body 1. In this case, the air purification device 2 can be connected to the smoke machine body 1 through a power supply line to be powered by the smoke machine body 1, or the air purification device 2 can be independently plugged in to obtain power supply.

[0108] Optionally, referring to Figure 1 , the controller 3 is fixed to the smoke machine body 1. It can be understood that compared with the air purification device 2, the smoke machine body 1 generally has a larger volume and more and more convenient positions and spaces for installing the controller 3. The controller 3 is generally connected in communication with the smoke fan of the smoke machine body 1 and the purification fan of the air purification device 2 in a wired manner to send start and stop signals to the smoke machine body 1 and the air purification device 2. Of course, the controller 3 can also be connected in communication with the smoke fan of the smoke machine body 1 and the purification fan of the air purification device 2 in a wireless manner. In particular, in the technical solution in which the air purification device 2 is movable relative to the smoke machine body 1, the controller 3 is generally connected in wireless communication with the purification fan of the air purification device 2.

[0109] Optionally, the air inlet 111 is arranged on the side surface of the decorative cover 11 to facilitate the suction of the oil fume escaping to the side of the smoke machine into the purification air duct to reduce the oil fume on the side of the smoke machine. In particular, when double burners are used below the smoke machine, the oil fume generated during cooking is prone to escape from the side of the smoke machine. The air inlet 111 arranged on the side surface of the decorative cover 11 is more conducive to the suction of such oil fume.

[0110] Optionally, the opposite side surfaces of the decorative cover 11 are each provided with one air inlet 111 to reduce the oil fume on both sides of the smoke machine. Of course, the air inlet 111 can also be arranged on only one of the two side surfaces of the decorative cover 11. Optionally, the air inlet 111 is provided with an air inlet grille to prevent hands and other foreign objects from extending into the decorative cover 11.

[0111] Optionally, the filter 22 is provided with two, and each filter 22 is arranged close to one air inlet 111. In this way, the air containing oil fume can be filtered by the filter 22 as soon as it enters the purification air duct, reducing the probability of the air containing oil fume polluting other devices in the purification air duct. However, the design is not limited to this. In other embodiments, only one filter 22 close to the air outlet 112 can be arranged, so that the oil fume in the air can be purified before being discharged.

[0112] In the embodiment, the air inlet 111 is arranged on the side of the decorative cover 11. However, the design is not limited thereto. In other embodiments, the air inlet 111 can also be arranged on the upper portion of the front of the decorative cover 11 or the top of the range hood main body 1, so as to facilitate the suction of the oil fume accumulated in the upper space of the kitchen due to the thermal plume effect, thereby facilitating the air circulation and purification of the entire space of the kitchen. It should be noted that when the air inlet 111 is arranged on the top of the range hood main body 1, it is usually arranged on the top plate of the range hood main 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 be provided with a wider top turn-up edge, the air inlet 111 can also be arranged on the top turn-up edge.

[0113] Optionally, the oil fume fan of the range hood main body 1 and the purification fan 23 of the air purification device 2 are connected to the same controller 3, that is, the extractor hood controls the range hood main body 1 and the air purification device 2 through the same controller 3. However, the design is not limited thereto. In other embodiments, the extractor hood can also be provided with two different controllers 3 to control the oil fume fan of the range hood main body 1 and the purification fan 23 of the air purification device 2, respectively.

[0114] Optionally, a control switch is further included to control the purification fan 23 of the air purification device 2. The control switch is usually arranged on the smoke collecting cover 12. The oil fume fan of the range hood main body 1 and the purification fan 23 of the air purification device 2 use different control switches, respectively, to achieve the independent start and stop control of the range hood main body 1 and the air purification device 2, so that the user can more flexibly use the oil fume exhaust function and the air purification function of the extractor hood. The control switch is usually electrically connected to the controller 3 to achieve the start and stop control.

[0115] Referring to Figures 1 to 3 In an embodiment, the air outlet 112 is arranged on the front of the decorative cover 11. Thus, when the purification fan 23 of the air purification device 2 is turned on, the air outlet 112 blows air forward or at least has a forward blowing component. During cooking, the user usually stands in front of the extractor hood, and the space in front of the extractor hood can be defined as the user breathing area. It can be understood that the forward blowing is beneficial to deliver the purified air to the user breathing area, thereby being beneficial to improve the air quality of the user breathing area and further reducing the probability of the user inhaling oil fume and the damage of oil fume to the health of the user.

[0116] Optionally, the air outlet 112 is located on the lower portion of the decorative cover 11. It can be understood that the lower portion of the decorative cover 11 is closer to the user breathing area, and is more beneficial to deliver the purified air to the user breathing area.

[0117] The design is not limited thereto, and in some other embodiments, the air outlet 112 can also be arranged on the top of the range hood main body 1 to facilitate pushing the oil fume accumulated in the upper space of the kitchen downward to be inhaled and purified by the air purification device 2, so as to include the oil fume in the upper half of the kitchen space into the air circulation and purification, and further reduce the oil fume in the kitchen; similarly, the air outlet 112 is usually arranged on the top plate of the range hood main body 1 connected with the decorative cover 11, and of course, when the top of the decorative cover 11 is bent to be provided with a wider top turning edge, the air inlet 111 can also be arranged on the top turning edge.

[0118] In some other embodiments, the air outlet 112 can also be arranged on the side of the decorative cover 11 or the bottom of the range hood main body 1, so that the purified air can be discharged. It should be noted that when the air outlet 112 is arranged on the bottom of the range hood main body 1, it is usually arranged on the bottom of the smoke collecting cover 12; it can be understood that at this time, part of the purification air duct is also arranged in the smoke collecting cover 12. Optionally, the air outlet direction of the air outlet 112 is adjustable; in this way, by changing the air outlet direction, more air outlet requirements of the user for the air outlet 112 can be met, such as meeting the straight blowing or non-straight blowing requirements of users of different heights.

[0119] Referring to Figure 5 and Figure 6 Optionally, the air purification device 2 further comprises a guide vane 100, which is rotatably arranged on the air outlet 112 to adjust the air outlet direction of the air outlet 112 by rotating the guide vane 100, and the air outlet direction of the air outlet 112 is continuously adjustable. The design is not limited thereto, and in some other embodiments, a guide vane 100 fixed guide vane frame can also be arranged on the air outlet 112, and the guide vane frame is configured with multiple guide vanes 100, the inclination angles of the guide vanes 100 of different guide vane frames are different, and different guide vane frames can be replaced to change the air outlet direction of the air outlet 112.

[0120] When the air outlet 112 is arranged on the front of the decorative cover 11, for the technical solution that the guide vane 100 is rotatable, the guide vane 100 extends transversely, and the included angle between the guide vane 100 and the horizontal plane ranges from -90° to 90° during the rotation of the guide vane 100; it can be understood that when the included angle between the guide vane 100 and the horizontal plane is less than zero, it means that the guide vane 100 is inclined downward to guide air, and when the included angle between the guide vane 100 and the horizontal plane is greater than or equal to zero, it means that the guide vane 100 is inclined upward to guide air; in this embodiment, the air guiding direction of the guide vane 100 is continuously adjustable from nearly vertical downward to nearly vertical upward.

[0121] Further optionally, the angle between the guide vane 100 and the horizontal plane ranges from -45° to 45°, under which the guide direction of the guide vane 100 can ensure a larger ventilation rate of the air outlet 112 while taking into account the user breathing area and the oil fume accumulation area above the range hood; it can be understood that the greater the angle between the guide vane 100 and the horizontal plane approaches -90° or 90°, the greater the wind resistance generated by the guide vane 100.

[0122] In addition, in other embodiments, the angle between the guide vane 100 and the horizontal plane can also range from 30° to 75°. It can be understood that within this rotation range, the guide vane 100 is inclined to extend upward, so that the air blown out from the air outlet 112 is mainly transported in the direction of inclination upward, thereby having a larger upward air outlet component, which can push the oil fume in the upper half of the kitchen space downward to be sucked into the air inlet 111 and purified, thereby including the oil fume in the upper half of the kitchen space into air circulation and purification (such as Figure 9 ), which can further reduce the oil fume in the kitchen.

[0123] During cooking, edible oil and food undergo a series of chemical reactions such as oxidation, cracking, and polymerization at high temperatures, and a large amount of organic fumes are evaporated, some of which are dispersed into the air in the form of oil mist to form oil fume. The oil fume includes not only edible oil and its products of heating decomposition or cracking, but also the products of physical and chemical reactions of proteins, high molecular compounds and various seasonings in food, and is a substance containing gas, liquid and solid. In general, the particulate matter emissions (Particulate Matter Emissions) composed of liquid and solid in oil fume emissions are referred to as PME, and the volatile organic compound emissions (Volatile Organic Compounds Emissions) are referred to as VOCs, and the oil fume is composed of the above two types of substances.

[0124] In an embodiment, the filter 22 includes a HEPA filter screen 221 (high efficiency air filter screen) and an activated carbon filter screen 222 (see Figure 3). Among them, the HEPA filter screen 221 is mainly used for filtering particulate matters (liquids and solids) in the oil fume, and its material can include PP filter paper (polypropylene filter paper), glass fiber, PTFE filter paper (polytetrafluoroethylene filter paper), nanofiber, melt-blown dacron non-woven fabric, etc., and has the characteristics of large dust holding capacity and high filtering precision. The filtering efficiency of the oil fume particulate matter can be more than 90%, and the filter screen can be processed into the required size and shape according to the model needs. The activated carbon filter screen 222 is mainly used for filtering volatile organic compounds (odors) in the oil fume, and its material can include activated carbon fiber, activated carbon particles, etc., and the activated carbon material used can be selected from coconut shell, fruit shell and coal carbon, etc. Such materials have a larger specific surface area, or the activated carbon material used can be selected from molecular sieve materials, which have good adsorption effect. Optionally, in the airflow direction, the HEPA filter screen 221 is located upstream of the activated carbon filter screen 222, so that the particulate matter in the oil fume can be prevented from adhering to the activated carbon filter screen 222, thereby prolonging the service life of the activated carbon filter screen 222.

[0125] Optionally, in the airflow direction, the filter element 22 is located upstream of the purification fan 23; in this way, the airflow passing through the purification fan 23 is the purified airflow, avoiding the accumulation of oil fume on the purification fan 23 and prolonging the service life of the purification fan 23.

[0126] Referring to Figures 1 to 4 , Figure 7 and Figure 8 , in an embodiment, the decorative cover 11 is provided with a filter element mounting port 113, and the filter element 22 is detachably arranged in the purification air duct through the filter element mounting port 113; in this way, the filter element 22 can be easily removed for cleaning or replacement. It can be understood that the filter element 22 usually has a certain service life, for example, the HEPA filter screen 221 used in the present technical solution usually has a design service life of more than 1 month, and it needs to be replaced when its service life reaches, so as to ensure the good purification ability of the air purification device 2, and in addition, it is beneficial to prolong its service life by being regularly or irregularly removed for cleaning or washing.

[0127] Optionally, the filter element mounting port 113 is provided with a filter element cover 24; in this way, after the filter element 22 is arranged in the purification air duct through the filter element mounting port 113, the filter element cover 24 is covered on the filter element mounting port 113, which can prevent the filter element 22 from shaking out, improve the structural stability of the product, and also prevent foreign matters from entering the purification air duct through the filter element mounting port 113.

[0128] Optionally, the air purification device 2 further comprises a purification housing 21 arranged in the decorative cover 11, the purification air duct is at least partially defined by the purification housing 21, the purification housing 21 is provided with an air inlet port 211 communicated with the air inlet port 111 and an air outlet port 212 communicated with the air outlet port 112. It can be understood that the independent purification housing 21 can more accurately limit the purification air duct, thereby accurately guiding the flow direction of the purified air flow, improving the purification efficiency, in addition, the purification housing 21 can more conveniently install and attach the filter 22 and the purification fan 23; however, the design is not limited thereto, and in other embodiments, a partition component such as a partition plate can be simply arranged in the decorative cover 11 to isolate the purification air duct. Without loss of generality, the purification housing 21 is provided with a mounting port 213 corresponding to the filter mounting port 113, and the filter 22 is detachably connected with the purification housing 21 through the filter mounting port 113 and the mounting port 213.

[0129] It should be noted that in the present embodiment, the filter cover 24 arranged on the filter mounting port 113 is connected to the purification housing 21. However, the design is not limited thereto, and in other embodiments, the filter cover 24 can also be connected to the decorative cover 11. In addition, in the present embodiment, the filter cover 24 can be rotatably connected to the purification housing 21 on one side and detachably connected to the purification housing 21 on the other side; in this way, after the filter cover 24 is opened, the filter cover 24 is still connected to the purification housing 21, which can avoid the loss of the filter cover 24. Further optionally, the other side of the filter cover 24 can be connected to the purification housing 21 by a press-type buckle switch assembly, in this way, the opening and closing of the filter cover 24 can be realized by pressing, which is convenient to operate.

[0130] Optionally, the filter 22 can be arranged in the purification housing 21 in a pullable manner; it can be understood that by pulling, the filter 22 can be more conveniently disassembled, cleaned or replaced. Optionally, the purification housing 21 is provided with a guide rail 216 extending towards the mounting port 213, and the filter 22 is arranged in the purification housing 21 along the guide rail 216; the guide rail 216 has a good guiding and mounting effect, which can facilitate the pullable disassembly and assembly of the filter 22.

[0131] Referring to Figures 2 to 6In an embodiment, the smoke machine body 1 further comprises a fan cover 13 arranged in the decorative cover 11, the oil fume duct is at least partially defined by the fan cover 13, and the purification shell 21 is arranged on the front face of the fan cover 13. In this embodiment, the purification shell 21 is arranged on the front face of the fan cover 13, so that the purification shell 21 is arranged closer to the air outlet 112 on the decorative cover 11, thereby shortening the distance between the purification shell 21 and the air outlet 112, facilitating the communication between the air outlet 212 on the purification shell 21 and the air outlet 112, and making the air speed of the purified air blown out of the air outlet 112 larger and the air blowing farther. Alternatively, the purification shell 21 is detachably connected to the front face of the fan cover 13, that is, the purification shell 21 is mounted by being attached to the fan cover 13. Compared with the technical solution in which the purification shell 21 is mounted by being attached to the decorative cover 11, this technical solution can reduce the probability of deformation of the decorative cover 11, and meanwhile, the detachable mounting of the purification shell 21 can facilitate the replacement of the internal components of the purification shell 21.

[0132] Alternatively, the purification fan 23 is a centrifugal fan. On the one hand, the centrifugal fan has a larger air volume and smaller noise, thereby realizing the air blowing farther at a lower noise. On the other hand, the centrifugal fan has the function of changing the air direction (axial air inlet and radial air outlet), which is conducive to realizing the air inlet on both sides and the air outlet on the front face.

[0133] Further, the purification shell 21 is provided with a centrifugal volute 214 for mounting the centrifugal fan, the air outlet side of the centrifugal volute 214 is bent and extended forward to form a wind guide section 215, and the wind guide section 215 extends to a position connected to the air outlet 112. It can be understood that the end of the wind guide section 215 away from the centrifugal volute 214 is provided with the air outlet 212. In this embodiment, the wind guide section 215 is arranged by being bent and extended, so that the air can be blown forward even if the axial direction of the centrifugal fan is perpendicular or nearly perpendicular to the fan cover 13, and the installation space of the centrifugal fan in the front-rear direction is smaller. It can be understood that if the radial direction of the centrifugal fan is perpendicular or nearly perpendicular to the fan cover 13, the installation space of the centrifugal fan in the front-rear direction is larger, because the diameter of the centrifugal fan is usually larger than or equal to the axial thickness of the centrifugal fan. Alternatively, the centrifugal volute 214 comprises a volute body and a volute cover which are spliced, so as to facilitate the mounting of the centrifugal fan in the centrifugal volute 214.

[0134] The present application further provides a control method of the smoke machine. Referring to Figure 10 , Figure 10 FIG. 1 is a flowchart of the control method of the smoke machine according to the first embodiment of the present application.

[0135] The control method of the smoke machine according to the present embodiment adopts the smoke machine according to any one of the above embodiments. The control method of the smoke machine comprises the following steps:

[0136] Step S110, real-time acquisition of the detection result detected by the person signal detection device; and

[0137] Step S120, determining the height data of the user in the environment of the range hood according to the detection result, and adjusting the corresponding air volume of the air purification device based on the height data.

[0138] In this embodiment, when the range hood main body 1 is in a running state, the person signal detection device 4 can detect the person signal in the environment of the range hood in real time, and acquire the detection result of the person signal detection device 4 in real time. Then, according to the detection result detected by the person signal detection device, the height data of the user in the environment of the range hood is determined, and the corresponding air volume of the air purification device 2 is adjusted based on the height data, so as to adjust the air volume of the air purification device 2 according to the height data of the user in the environment of the range hood. Specifically, if it is judged according to the detection result that there is a user in the environment of the range hood, the height data of the user is determined according to the detection result, and the air volume of the air purification device is adjusted according to the preset air volume corresponding to the height data, so as to realize intelligent control of the air volume of the air purification device, improve the intelligence of the range hood, and further avoid affecting the comfort experience of the user due to the too large air volume of the air purification device when the user cooks.

[0139] In an embodiment, step S120 includes:

[0140] Step S121, acquiring the preset air volume corresponding to the height data, and adjusting the corresponding air volume of the air purification device based on the preset air volume.

[0141] In this embodiment, the preset air volume corresponding to each height data can be set in advance, for example, when the height data is 150 cm, the corresponding air volume is a large air volume such as 100 CMH, when the height data is 160 cm, the corresponding air volume is a medium air volume such as 80 CMH, and when the height data is 170 cm, the corresponding air volume is a small air volume such as 50 CMH. When the height data is acquired, the corresponding preset air volume is acquired according to the height data, and the corresponding air volume of the air purification device 2 is adjusted based on the preset air volume, that is, the air volume of the air purification device 2 is adjusted to the preset air volume, so as to intelligently adjust the air volume of the air purification device according to the height of the user in the environment of the range hood, improve the intelligence of the range hood, and further avoid affecting the comfort experience of the user due to the too large air volume of the air purification device when the user cooks.

[0142] Optionally, step S121 includes:

[0143] Step a, if the height data is less than the first preset height, determining the preset air volume as the first preset air volume; and

[0144] Step b, if the height data is greater than or equal to the first preset height and less than the second preset height, determining the preset air volume as the second preset air volume;

[0145] Step c, if the height data is greater than or equal to the second preset height, determining the preset air volume as the third preset air volume;

[0146] Wherein, the first preset air volume is greater than the second preset air volume, and the second preset air volume is greater than the third preset air volume.

[0147] In the embodiment, the first preset height and the second preset height are set in advance, which can be reasonably set by the user, that is, the user can set the preset height according to the height of the user, wherein the user can input the preset height through the control panel of the range hood or set the preset height through the mobile terminal connected with the range hood, and the controller 3 determines the first preset height and the second preset height according to the preset height, for example, if the height of the user is 170cm, the user sets the preset height as 170cm, and the controller 3 determines the first preset height as 155cm and the second preset height as 165cm.

[0148] It can be understood that the first preset air volume, the second preset air volume and the third preset air volume can also be reasonably set, specifically, if the maximum air volume of the air purification device is 100CMH, the first preset air volume can be set in the range of 85CMH-100CMH, the second preset air volume can be set in the range of 65CMH-85CMH, and the third preset air volume can be set in the range of 40CMH-60CMH, for example, the first preset air volume is 100CMH, the second preset air volume is 80CMH, and the third preset air volume is 50CMH.

[0149] In the embodiment, if the height data is less than the first preset height, for example, the height data is 150cm and the first preset height is 155cm, it is determined that the current user is far away from the air outlet of the air purification device 2, at this time, the preset air volume is determined as the first preset air volume, so that the air purification device 2 operates according to the larger air volume, improves the efficiency of the range hood in absorbing oil smoke, and avoids the situation that the air volume of the air purification device 2 is too small, the oil smoke generated during cooking spreads in the kitchen space, and the oil smoke pollution and the harm to human health occur, at the same time, the wind blown out of the air outlet blows the user to cool down, and improves the comfort experience of the user.

[0150] If the height data is greater than or equal to the first preset height and less than the second preset height, for example, the height data is 160 cm, the first preset height is 155 cm, and the second preset height is 165 cm, it is determined that the distance between the current user and the air outlet of the air purification device 2 is in the middle. At this time, the preset air outlet air volume is determined as the second preset air outlet air volume, so that the air purification device 2 operates according to the medium air outlet air volume, avoids the case that the oil fume generated during cooking is diffused in the kitchen space due to the small air volume of the air purification device 2, causing oil fume pollution and harm to human health, and reduces the energy consumption of the range hood, and the wind blown out of the air outlet blows the user to cool down, improving the user's comfort experience.

[0151] If the height data is greater than or equal to the second preset height, for example, the height data is 170 cm, and the second preset height is 165 cm, it is determined that the distance between the current user and the air outlet of the air purification device 2 is close. At this time, the preset air outlet air volume is determined as the third preset air outlet air volume, so that the air purification device 2 operates according to a smaller air outlet air volume, thereby avoiding the case that the large air volume of the air purification device 2 affects the user's comfort and reduces the energy consumption of the range hood.

[0152] Optionally, the character signal detection device includes a camera, and the detection result includes an image currently captured by the camera, and step S120 includes:

[0153] Step S122, image recognition is performed on the image to obtain an image recognition result, and the height data is determined according to the image recognition result.

[0154] In this embodiment, when the image currently captured by the camera is obtained, a character recognition algorithm is used to perform image recognition on the image to obtain an image recognition result, and then the controller 3 determines whether there is a user in the environment of the range hood according to the image recognition result, wherein the image recognition result includes whether there is a character image in the image, and if there is, the height data of the user is determined according to the character image.

[0155] In another embodiment, step S120 includes:

[0156] Step S123, according to the detection result, determining whether there is a user in the environment of the range hood; and

[0157] Step S124, if it is determined according to the detection result that there is a user in the environment of the range hood, determining the height data of the user in the environment of the range hood based on the detection result.

[0158] In another embodiment, after step a, step S123 further includes:

[0159] In step S125, if it is determined according to the detection result that there is no user in the environment where the range hood is located, the air purification device is controlled based on a fourth preset air volume, wherein the ratio of the fourth preset air volume to the maximum air volume of the air purification device is greater than a preset ratio, and the preset ratio ranges from 75% to 100%.

[0160] In this embodiment, it is first determined according to the detection result whether there is a user in the environment where the range hood is located. The air volume of the air purification device 2 is adjusted when there is a user in the environment where the range hood is located, thereby improving the intelligence of the range hood. If there is no user in the environment where the range hood is located, the air purification device 2 is controlled based on a fourth preset air volume, that is, the air volume of the air purification device 2 is adjusted to the fourth preset air volume. By controlling the air purification device 2 to operate at a large air volume, the purification efficiency of the oil fume in the kitchen can be improved, thereby improving the effect of the range hood main body 1 on absorbing oil fume, and avoiding the situation that the oil fume generated during cooking spreads in the kitchen space due to the small air volume of the air purification device 2, thereby causing oil fume pollution and harm to human health.

[0161] The control method of the range hood provided in this embodiment can obtain the detection result detected by the human signal detection device in real time, then determine the height data of the user in the environment where the range hood is located according to the detection result, and adjust the air volume of the air purification device corresponding to the height data of the user, so as to adjust the air volume of the air purification device according to the height data of the user in the environment where the range hood is located, thereby realizing intelligent control of the air volume of the air purification device, improving the intelligence of the range hood, and avoiding the situation that the air volume of the air purification device is too large when the user is cooking, thereby affecting the comfort experience of the user.

[0162] The application further provides a computer readable storage medium, wherein the computer readable storage medium stores a control program of a range hood, and the control program of the range hood is executed by a processor to realize the steps of the control method of the range hood. Since the computer readable storage medium adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described herein.

[0163] It should be noted that the technical solutions of the various embodiments of the application can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the application.

[0164] The above merely describes the preferred embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent structural transformation or direct or indirect application in other related technical fields based on the content of the present application specification and drawings are also included in the patent protection scope of the present application.

Claims

1. A range hood, characterized in that, include: Main body of the range hood; as well as An air purification device is provided with a purification duct, and a filter and a purification fan installed in the purification duct; The outer surface of the main body of the range hood is provided with an air inlet connected to the purification air duct and an air outlet connected to the purification air duct. A human signal detection device is used to detect human signals in the environment where the range hood is located; The controller is electrically connected to both the human signal detection device and the air purification device. The controller is used to determine the height data of the user in the environment where the range hood is located based on the detection result detected by the human signal detection device. The controller obtains the preset air volume corresponding to the height data and adjusts the air volume corresponding to the air purification device based on the preset air volume. The main body of the range hood includes a decorative cover, and the air outlet is located at the lower part or side of the decorative cover; If the height data is less than the first preset height, the controller determines that the preset air volume is the first preset air volume; as well as If the height data is greater than or equal to the first preset height and less than the second preset height, then the controller determines the preset air volume to be the second preset air volume. If the height data is greater than or equal to the second preset height, the controller determines the preset air volume to be the third preset air volume; Wherein, the first pre-outlet air volume is greater than the second pre-outlet air volume, the second pre-outlet air volume is greater than the third pre-outlet air volume, the range of the first preset air volume is 85CMH~100CMH, the range of the second preset air volume is 65CMH~85CMH, and the range of the third preset air volume is 40CMH~60CMH.

2. The range hood as described in claim 1, characterized in that, The human signal detection device includes a camera, an infrared sensor, an ultrasonic sensor, or a TOF sensor.

3. The range hood as described in claim 2, characterized in that, When the human signal detection device includes a camera device, the detection result includes the image currently captured by the camera device; The controller performs image recognition on the image to obtain image recognition results, and determines the height data based on the image recognition results.

4. The range hood as described in claim 1, characterized in that, If, based on the detection results, it is determined that there is a user in the environment where the range hood is located, the controller determines the height data of the user in the environment based on the detection results.

5. The range hood as described in claim 4, characterized in that, If, based on the detection results, it is determined that there are no users in the environment where the range hood is located, the controller controls the air purification device based on the fourth preset air volume, wherein the ratio of the fourth preset air volume to the maximum air volume of the air purification device is greater than a preset ratio, and the preset ratio ranges from 75% to 100%.

6. The range hood according to any one of claims 1 to 5, characterized in that, The main body of the range hood includes a decorative cover and a smoke collection cover located below the decorative cover, and the decorative cover is provided with an oil fume duct.

7. The range hood as described in claim 6, characterized in that, The air inlet is located on the side of the decorative cover; or, The air inlet is located at the upper part of the front of the decorative cover; or, The air inlet is located at the top of the main body of the smoke hood.

8. A control method for a range hood, characterized in that, The control method for the range hood according to any one of claims 1 to 7 includes the following steps: Real-time acquisition of the detection results detected by the human signal detection device; and Based on the detection results, the user's height data in the environment where the range hood is located is determined, and the preset airflow volume corresponding to the height data is obtained. The airflow volume corresponding to the air purification device is adjusted based on the preset airflow volume. If the height data is less than a first preset height, the preset airflow volume is determined to be the first preset airflow volume; if the height data is greater than or equal to the first preset height and less than a second preset height, the preset airflow volume is determined to be the second preset airflow volume; if the height data is greater than or equal to the second preset height, the preset airflow volume is determined to be the third preset airflow volume. The first preset airflow volume is greater than the second preset airflow volume, and the second preset airflow volume is greater than the third preset airflow volume.

9. The control method for a range hood as described in claim 8, characterized in that, The human signal detection device includes a camera device, and the detection result includes the image currently captured by the camera device; The step of determining the user's height data in the environment where the range hood is located based on the detection results includes: The image is subjected to image recognition to obtain the image recognition result, and the height data is determined based on the image recognition result.

10. The control method for a range hood as described in any one of claims 8 to 9, characterized in that, The step of determining the user's height data in the environment where the range hood is located based on the detection results includes: Based on the detection results, determine whether there are users in the environment where the range hood is located; and If, based on the detection results, it is determined that there is a user in the environment where the range hood is located, then the height data of the user in the environment where the range hood is located is determined based on the detection results.

11. The control method for a range hood as described in claim 10, characterized in that, After determining whether a user exists in the environment where the range hood is located based on the detection results, the method further includes: If, based on the detection results, it is determined that there are no users in the environment where the range hood is located, the air purification device is controlled based on the fourth preset air volume, wherein the ratio of the fourth preset air volume to the maximum air volume of the air purification device is greater than a preset ratio, and the preset ratio ranges from 75% to 100%.

12. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a control program for a range hood, which, when executed by a processor, implements the steps of the control method for a range hood as described in any one of claims 8 to 11.

Images