Range hood, control method thereof and computer readable storage medium

Abstract

The invention discloses a range hood, a control method thereof and a computer readable storage medium, and relates to the technical field of household appliances, and the control method of the range hood comprises the following steps: determining the smoke amount and / or the smoke outlet position in a cooking environment based on detection data obtained by a detection device; according to the smoke amount and / or the smoke outlet position, the opening and closing states of an upper smoke inlet and / or a lower smoke inlet of a smoke collecting hood are / is controlled; and when the upper smoke inlet is controlled to be opened, an upper smoke inlet panel arranged at the upper smoke inlet is controlled to move towards the interior of the smoke collecting cavity of the smoke collecting hood. According to the technical scheme, the range hood can meet different oil smoke suction requirements of different cooking scenes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to an extractor hood, a control method thereof and a computer readable storage medium. BACKGROUND

[0002] The extractor hood has become one of the indispensable kitchen household appliances in modern families. The extractor hood is installed in the kitchen and located above the stove, which can quickly remove the waste of the stove combustion and the oil fume generated during the cooking process which is harmful to human body, and discharge it to the outdoor to reduce pollution. Different cooking scenes have different oil fume suction needs, and the extractor hood in the related art is difficult to meet the different oil fume suction needs of different cooking scenes. For example, when cooking with a steamer, the oil fume position of the steamer is relatively high, and even higher than the inlet of the near-suction type extractor hood, which is easy to cause the high-position oil fume to overflow; for example, on a double burner stove, when the left burner is used for clear stewing by a soup pot and the right burner is used for stir-frying by a frying pan, the oil fume on the stir-frying side is much more than that on the clear stewing side, which is easy to cause the oil fume on the stir-frying side to overflow. SUMMARY

[0003] The main purpose of the present application is to provide a control method of an extractor hood, which aims to make the extractor hood meet the different oil fume suction needs of different cooking scenes.

[0004] To achieve the above-mentioned purpose, the control method of the extractor hood provided by the present application comprises the following steps: Based on the detection data obtained by the detection device, the amount of smoke and / or the smoke outlet position in the cooking environment is determined; According to the amount of smoke and / or the smoke outlet position, the opening and closing state of the upper inlet of the smoke hood and / or the lower inlet of the smoke hood is controlled; When the upper inlet of the smoke hood is controlled to be opened, the upper inlet panel arranged at the upper inlet of the smoke hood is controlled to move towards the smoke collection cavity of the smoke hood.

[0005] Optionally, the step of controlling the opening and closing state of the upper inlet of the smoke hood and / or the lower inlet of the smoke hood according to the amount of smoke and / or the smoke outlet position comprises: When it is determined that there is a smoke outlet position higher than the preset height, the upper inlet of the smoke hood is controlled to be opened.

[0006] Optionally, the step of controlling the opening and closing state of the upper inlet of the smoke hood and / or the lower inlet of the smoke hood according to the amount of smoke and / or the smoke outlet position comprises: When it is determined that there is a smoke outlet position higher than the preset height and a smoke outlet position lower than the preset height at the same time, the upper inlet of the smoke hood and the lower inlet of the smoke hood are both controlled to be opened.

[0007] Optionally, the detection device comprises a ranging device and / or a vision device, and the detection data comprises height data obtained based on the ranging device and / or image data obtained based on the vision device; and the step of determining the smoke amount and / or the smoke emission position in the cooking environment based on the detection data obtained by the detection device comprises: judging the type of the cooking appliance according to the height data and / or the image data; determining whether there is a smoke emission position higher or lower than a preset height according to the type of the cooking appliance.

[0008] Optionally, the control method of the range hood further comprises the steps of: when both the upper smoke inlet and the lower smoke inlet are open, increasing the rotating speed of the exhaust fan.

[0009] Optionally, the lower smoke inlet comprises a left-side smoke inlet and a right-side smoke inlet; and the step of controlling the opening and closing states of the upper smoke inlet and / or the lower smoke inlet of the smoke collection cover according to the smoke amount and / or the smoke emission position comprises: determining the smoke amount difference between the left and right sides below the smoke collection cover, and controlling the opening and closing states of the left-side smoke inlet and the right-side smoke inlet according to the smoke amount difference.

[0010] Optionally, the step of determining the smoke amount difference between the left and right sides below the smoke collection cover, and controlling the opening and closing states of the left-side smoke inlet and the right-side smoke inlet according to the smoke amount difference comprises: determining that the smoke amounts on the left and right sides below the smoke collection cover are both greater than a lower threshold value; when the smoke amounts on the left and right sides below the smoke collection cover are equivalent, controlling the left-side smoke inlet and the right-side smoke inlet to open to an equivalent opening degree; when the smoke amount on one side below the smoke collection cover is greater than that on the other side, controlling the opening degree of one of the left-side smoke inlet and the right-side smoke inlet corresponding to the side with the greater smoke amount to be greater than that of the other.

[0011] Optionally, the step of determining the smoke amount difference between the left and right sides below the smoke collection cover, and controlling the opening and closing states of the left-side smoke inlet and the right-side smoke inlet according to the smoke amount difference comprises: determining that the smoke amount on only one side below the smoke collection cover is less than a lower threshold value, controlling the left-side smoke inlet or the right-side smoke inlet corresponding to the other side to open, and decreasing the rotating speed of the exhaust fan.

[0012] Optionally, the detection device comprises a smoke sensor and / or a vision device and / or a firepower detection device; the detection data comprises smoke amount data of the left and right sides below the smoke collection cover obtained based on the smoke sensor, to determine the smoke amount difference between the left and right sides below the smoke collection cover; and / or The detection data includes image data obtained by the vision device, and the type of the cooking appliance on the left and right sides below the fume hood is determined according to the image data, and the smoke amount difference on the left and right sides below the fume hood is determined according to the type of the cooking appliance; and / or The detection data includes fire data of the left and right furnace heads obtained by the fire detection device, and the smoke amount difference on the left and right sides below the fume hood is determined according to the fire difference between the left and right furnace heads.

[0013] Optionally, the step of controlling the upper smoke inlet panel to move towards the smoke collection cavity of the fume hood when the upper smoke inlet is controlled to be opened includes: When the upper smoke inlet is controlled to be opened, the upper smoke inlet panel is controlled to move towards the smoke collection cavity to a preset inclined state; in the preset inclined state, the upper smoke inlet panel is inclined from bottom to top away from the upper smoke inlet.

[0014] The application further provides an extractor hood, which comprises a memory, a processor, and a control program of the extractor hood stored in the memory and executable on the processor, and the control program of the extractor hood is executed by the processor to implement the steps of the control method of the extractor hood.

[0015] The application further provides a computer readable storage medium, which stores a control program of an extractor hood, and the control program of the extractor hood is executed by a processor to implement the steps of the control method of the extractor hood.

[0016] The technical solution of the present application first determines the smoke amount and / or smoke outlet position in the cooking environment based on the detection data obtained by the detection device, and then controls the opening and closing state of the upper smoke inlet and / or lower smoke inlet of the smoke hood according to the smoke amount and / or smoke outlet position. For example, when the smoke amount is less than a first preset value, only the lower smoke inlet is opened to meet the oil fume suction demand. When the smoke amount is greater than a second preset value, which is greater than or equal to the first preset value, the lower smoke inlet and the upper smoke inlet are opened at the same time. In other words, the lower smoke inlet cannot fully meet the oil fume suction demand, and part of the oil fume will escape upward, so the upper smoke inlet needs to be opened to assist in oil fume suction. For example, when the smoke outlet position is higher than the position of the lower smoke inlet (for a light and thin side suction type hood, when a multi-layer steamer is used for cooking, the height of the multi-layer steamer is relatively high, and this situation may occur), the oil fume will move upward under the action of the hot plume, and the smoke exhaust efficiency of the lower smoke inlet is relatively low. At this time, the upper smoke outlet can be opened alone for smoke exhaust. For another example, for a cooking scene where a multi-layer steamer is used for cooking on the left stove head and a frying pan is used for cooking on the right stove head, both the smoke outlet position is relatively high and the smoke amount is relatively large. Therefore, the upper smoke inlet and the lower smoke inlet need to be opened at the same time for smoke exhaust. In other words, the technical solution of the present application can meet different oil fume suction demands in different cooking scenes. In addition, when the upper smoke inlet is opened, the upper smoke panel located at the upper smoke inlet is moved towards the smoke collection cavity of the smoke hood. In this way, even if the oil stains on the upper smoke panel drop downward, they will only drop into the smoke collection cavity, thereby avoiding the oil stains on the upper smoke panel from dropping onto the cooking table or cooking utensils, and improving the user's experience. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to the structures shown in these drawings without creative labor for those skilled in the art.

[0018] Figure 1 Flowchart of an embodiment of the control method of the oil fume extractor of the present application; Figure 2 Structural schematic diagram of an embodiment of the oil fume extractor of the present application; Figure 3 Structural schematic diagram of an embodiment of the oil fume extractor of the present application; Figure 2 Cross-sectional structural schematic diagram of the smoke hood of the oil fume extractor; Figure 4 Structural schematic diagram of an embodiment of the oil fume extractor of the present application; Figure 2 Oil fume movement schematic diagram of the oil fume extractor in a cooking scene; Figure 5 For Figure 2 The oil fume running direction schematic diagram of the range hood in another cooking scene; Figure 6 For Figure 2 The oil fume running direction schematic diagram of the range hood in another cooking scene; Figure 7 For Figure 2 The oil fume running direction schematic diagram of the range hood in another cooking scene; Figure 8 For Figure 2 The oil fume running direction schematic diagram of the range hood in another cooking scene.

[0019] BRIEF DESCRIPTION OF DRAWINGS 1, hood; 102, lower smoke inlet; 102a, left side smoke inlet; 102b, right side smoke inlet; 103, smoke passage; 104, upper smoke inlet panel; 105, upper smoke inlet; 12, opening and closing mechanism; 131, front panel; 132, back plate The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0020] 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 work fall within the scope of protection of the present application.

[0021] 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.

[0022] 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 defined as "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 person 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, nor within the protection scope required by the present application.

[0023] The present application provides a control method of a range hood.

[0024] Referring to Figure 1 In an embodiment of the present application, the control method of the range hood comprises the following steps: S10, determining the smoke amount and / or smoke outlet position in the cooking environment based on the detection data obtained by the detection device; S20, controlling the opening and closing state of the upper smoke inlet and / or lower smoke inlet of the smoke collecting hood according to the smoke amount and / or smoke outlet position.

[0025] In this embodiment, referring to Figure 2 and Figure 3 , the range hood is usually a side suction type range hood, and the smoke collecting hood 1 of the range hood is usually provided with a lower smoke inlet 102 and an upper smoke inlet 105 located above the lower smoke inlet 102, and the lower smoke inlet 102 and the upper smoke inlet 105 are both provided with an opening and closing mechanism 12 to control the opening and closing state of the corresponding smoke inlet. Here, the opening and closing state not only refers to the open state and the closed state, but also refers to different opening degrees in the open state.

[0026] For the side suction type range hood, the smoke collecting hood 1 usually includes a back plate 132 and a front plate 131 opposite to the back plate 132, and the front plate 131 is inclinedly arranged. The side suction type range hood usually includes a light and thin type side suction type range hood and a traditional type side suction type range hood.

[0027] For the traditional type side suction type range hood, the whole smoke collecting hood 1 is arranged in a triangular shape in the side view, and the lower smoke inlet 102 and the upper smoke inlet 105 are both arranged on the front plate 131.

[0028] For the light and thin type side suction type range hood, the upper end of the front plate 131 is inclinedly extended to the middle or middle rear part of the top plate of the smoke collecting hood 1, and the whole smoke collecting hood 1 is arranged in a nearly "7" shape in the side view (refer toFigure 2 ), so that the smoke hood 1 can be further close to the smoke source, the smoke suction path is shortened, and the smoke locking efficiency is improved during the explosive frying. For a light and thin side suction type range hood, the lower smoke inlet 102 and the upper smoke inlet 105 can be arranged on the front panel 131, and of course, the upper smoke inlet 105 can be arranged on the top plate. Alternatively, the included angle between the front panel 131 and the back panel 132 is in the range of 10° to 30°, so that the front panel 131 is relatively inclined to the vertical direction, so as to reduce the occupation of the user operation space by the smoke hood 1.

[0029] In the present application, the detection device can be arranged on the range hood so as to be in communication connection with the processor of the range hood. Of course, the detection device can also be an external device independent of the range hood, as long as the detection device can be in communication connection with the processor of the range hood. In the present application, the detection device can feed back the detection data to the processor of the range hood, so as to determine the smoke amount and / or the smoke outlet position in the cooking environment by the processor of the range hood; of course, for the detection device with computing power, the detection device can also determine the smoke amount and / or the smoke outlet position by itself, and then feed back the smoke amount and / or the smoke outlet position information to the processor of the range hood, so as to reduce the workload of the processor of the range hood. In the present application, the smoke outlet position refers to the position of the smoke outlet point, which can include the height position of the smoke outlet point. It can be understood that due to the different heights of the cookers, the height positions of the smoke outlet points of the same cooking utensils will be different, or for the same cooker, due to the different heights of the different cooking utensils, the height positions of the smoke outlet points will also be different; it can also include the left or right position of the smoke outlet point below the range hood, for example, for a double burner cooker, the cooking utensil on the left burner can smoke, and the smoke outlet point is on the left side of the range hood below, or the cooking utensil on the right burner can smoke, and the smoke outlet point is on the right side of the range hood below.

[0030] The technical scheme of the present application first determines the smoke amount and / or the smoke outlet position in the cooking environment based on the detection data obtained by the detection device, and then controls the opening and closing state of the upper smoke inlet and / or the lower smoke inlet of the smoke hood according to the smoke amount and / or the smoke outlet position; for example, when the smoke amount is less than a first preset value, only the lower smoke inlet is opened, which can meet the demand of smoke suction, and when the smoke amount is greater than a second preset value, the second preset value is greater than or equal to the first preset value, the lower smoke inlet and the upper smoke inlet are controlled to be opened at the same time, that is, the lower smoke inlet cannot completely meet the demand of smoke suction, and part of the smoke will escape upward, so the upper smoke inlet needs to be opened to assist the smoke suction; for another example, when the smoke outlet position is higher than the position of the lower smoke inlet (for a light and thin side suction type range hood, when a multi-layer steamer is used for cooking, due to the high height of the multi-layer steamer, this situation will occur, see Figure 4), because the oil fume is upward in the hot plume effect, the exhaust efficiency of the lower smoke inlet is low, at this time, the upper smoke exhaust port can be opened alone for exhaust; for example, for the left stove head, a multi-layer steamer is used for cooking, the right stove head is used for cooking scene of frying, there are both high smoke outlet position and large amount of smoke, so the upper smoke inlet and the lower smoke inlet need to be opened at the same time for exhaust; in other words, the technical scheme of the present application can meet the different oil fume suction needs of different cooking scenes.

[0031] In the present application, the preset value of the smoke amount (including the first preset value and the second preset value) generally refers to the concentration value of particulate matter or pollutants in the air, when the smoke amount is less than the first preset value, that is, the current concentration of smoke is less than the first preset concentration value, because the smoke concentration is low, only the lower smoke inlet can be controlled to open, which can meet the oil fume suction demand. However, the design is not limited to this, in other embodiments, the preset value of the smoke amount can also refer to the optical density value of the smoke, the optical density reflects the smoke concentration by measuring the degree of light shielding of the smoke, and the larger the value, the higher the smoke concentration.

[0032] In an embodiment, referring to Figure 2 and Figure 3 , the opening and closing mechanism 12 at the upper smoke inlet 105 is configured to be movably connected to the upper smoke panel 104 of the smoke hood 1, and when the upper smoke panel 104 opens the upper smoke inlet 105, the upper smoke panel 104 is located in the smoke collecting cavity. In this embodiment, the upper smoke panel 104 can be rotated inward to open, or can be translated inward to open, etc., as long as the upper smoke panel 104 moves towards the smoke collecting cavity during the process of opening the upper smoke inlet 105.

[0033] In the technical scheme of the present application, the upper smoke panel 104 moves towards the smoke collecting cavity during the process of switching from the closed state to the open state, so that the upper smoke panel 104 is located in the smoke collecting cavity in the open state, so that the oil stains formed on the upper smoke panel 104 will only fall into the smoke collecting cavity even if they fall downward, thereby avoiding the oil stains on the upper smoke panel 104 from falling onto the cooking table or cooking utensils, to improve the user's experience.

[0034] Further, in the open state, the upper smoke inlet panel 104 is opened to a preset inclined state; in the preset inclined state, the upper smoke inlet panel 104 is inclined from bottom to top in a direction away from the upper smoke inlet 105, so that the upper smoke inlet panel 104 can guide the oil fume to flow upwardly, that is, the oil fume is guided by the upper smoke inlet panel 104 to the exhaust fan of the range hood, thereby improving the exhaust efficiency of the oil fume; it is worth mentioning that under the suction of the exhaust fan, the oil fume has a tendency to flow upwardly from the upper smoke inlet 105, and in the embodiment, the upper smoke inlet panel 104 in the open state is also inclined upwardly, which is the same as the flow tendency of the oil fume, that is, the upper smoke inlet panel 104 in the open state can guide the oil fume along the flow tendency, thereby better guiding the oil fume, so that the oil fume is more smoothly exhausted.

[0035] In an embodiment, referring to Figure 2 and Figure 3 , the lower smoke inlet 102 is provided with a smoke inlet groove recessed into the smoke collecting cavity, the smoke inlet groove is provided with a smoke passing opening 103 communicating with the smoke collecting cavity, and the opening and closing mechanism 12 of the lower smoke inlet 102 is arranged at the smoke passing opening 103.

[0036] In the embodiment, since the smoke passing opening 103 is arranged in the smoke inlet groove recessed into the smoke collecting cavity, even if the oil droplets at the opening and closing mechanism 12 of the lower smoke inlet 102 drip downwardly, they will only drip into the smoke inlet groove or the smoke collecting cavity, and will not drip onto the cooking bench or the cooking utensil, thereby improving the user experience.

[0037] Further, the smoke passing opening 103 is arranged at the upper groove wall of the smoke inlet groove, and the opening and closing mechanism 12 is arranged at the upper side of the smoke passing opening 103, that is, the opening and closing mechanism 12 is arranged at the top side of the smoke inlet groove, so that the user cannot basically see the opening and closing mechanism 12 through the lower smoke inlet 102, thereby hiding the opening and closing mechanism 12, and the oil stains on the opening and closing mechanism 12 will not be exposed to the user's sight, thereby further improving the user experience. Alternatively, the upper groove wall can be formed by bending part of the front panel 131, thereby facilitating the processing of the smoke inlet groove.

[0038] In an embodiment, the step S20 comprises: determining that there is a smoke outlet position higher than a preset height, and controlling the upper smoke inlet to be opened.

[0039] In the embodiment, referring to Figure 4When it is determined that the smoke outlet position is higher than the preset height, the corresponding cooking scene is usually that the smoke outlet position of the cooking appliance is close to the height of the lower smoke inlet or even higher than the height of the lower smoke inlet. It can be understood that when the smoke outlet position is close to the height of the lower smoke inlet, due to the fast upward speed of the oil fume, the lower smoke inlet cannot timely suck away all the oil fume, that is, at least part of the oil fume will escape upward, and the upper smoke inlet needs to be controlled to be opened. When the smoke outlet position is higher than the height of the lower smoke inlet, due to the upward movement of the oil fume under the action of the hot plume, the smoke exhaust efficiency of the lower smoke inlet is low, and at this time, the upper smoke inlet can be opened alone for smoke exhaust. In the embodiment, the preset height can be configured as the height of the lower smoke inlet or slightly lower than the height of the lower smoke inlet. It is worth mentioning that in the embodiment, the upper smoke inlet is not necessarily controlled to be opened when the smoke outlet position is higher than the preset height. In actual situation, due to the inflation trend of the oil fume, part of the oil fume can be inflated downward and sucked into the lower smoke inlet when the suction force of the lower smoke inlet is large.

[0040] In another embodiment, the step S20 can further include: When it is determined that the smoke outlet position is higher than the preset height and the smoke outlet position is lower than the preset height, the upper smoke inlet and the lower smoke inlet are controlled to be opened.

[0041] The cooking scene corresponding to the embodiment is usually that different cooking is respectively performed on the two burners of the double-burner stove, for example but not limited to, a multi-layer steamer is used for cooking on the left burner, the smoke outlet position of the multi-layer steamer is relatively high and can be even higher than the lower smoke inlet of the thin and light type side suction range hood, and a frying pan is used for cooking on the right burner, the smoke outlet position of the frying pan is relatively low. In this way, the smoke outlet position higher than the preset height and the smoke outlet position lower than the preset height can exist at the same time. For the higher smoke outlet position, the upper smoke inlet needs to be controlled to be opened to suck away the high flue gas and reduce the oil fume leakage; for the lower smoke outlet position, the lower smoke inlet needs to be controlled to be opened to suck away the low flue gas; the technical solution of the embodiment can divide the flue gas into upper and lower parts (see Figure 5 ), thereby reducing the oil fume leakage.

[0042] In an embodiment, the detection device can include a distance measuring device, and the detection data includes height data obtained based on the distance measuring device. The step S10 includes: judging the type of the cooking appliance according to the height data; determining whether the smoke outlet position is higher or lower than the preset height according to the type of the cooking appliance.

[0043] In the embodiment, the distance measuring device can be a distance measuring sensor arranged on the front panel of the fume hood and rotatably arranged, so as to scan the heights of different positions of the cooking utensil through rotation of the distance measuring sensor, so as to obtain height data for characterizing the profile of the corresponding cooking utensil, and then the type (steamer, frying pan, soup pot, frying pan, etc.) of the corresponding cooking utensil can be determined. It can be understood that the heights of the smoke outlet positions of different types of cooking utensils are usually different. For example, the height of the smoke outlet position of the steamer is usually higher than that of the soup pot, the height of the smoke outlet position of the soup pot is usually higher than that of the frying pan, and the height of the smoke outlet position of the frying pan is usually higher than that of the frying pan.

[0044] In other embodiments, the distance measuring sensor can also be arranged without rotation. In this case, a plurality of distance measuring sensors can be arranged, for example, to form a distance measuring sensor array, to measure the heights of different positions of the cooking utensil. In other embodiments, the type of cooking utensil can be determined simply by the highest data detected, without the need to characterize the profile of the cooking utensil by a series of height data to determine the type of cooking utensil. In other embodiments, the height of the smoke outlet position of the cooking utensil can also be determined simply by the highest data detected, without the need to determine the type of cooking utensil first and then determine the height of the smoke outlet position of the cooking utensil.

[0045] In another embodiment, the detection device can include a vision device, and the detection data can include image data obtained based on the vision device. The step S10 can include: determining the type of cooking utensil based on the image data; determining whether there is a smoke outlet position higher or lower than the preset height based on the type of cooking utensil.

[0046] In the embodiment, the vision device includes a camera arranged on the front panel of the fume hood and arranged downward, so as to obtain the actual image of the cooking utensil on the stove through the camera, and then match the actual image with the pre-stored image of the cooking utensil, so as to determine the type (steamer, frying pan, soup pot, frying pan, etc.) of the corresponding cooking utensil. It can be understood that the heights of the smoke outlet positions of different types of cooking utensils are usually different. For example, the height of the smoke outlet position of the steamer is usually higher than that of the soup pot, the height of the smoke outlet position of the soup pot is usually higher than that of the frying pan, and the height of the smoke outlet position of the frying pan is usually higher than that of the frying pan.

[0047] In another embodiment, the detection device can also include a distance measuring device and a vision device, and the detection data can include height data obtained based on the distance measuring device and image data obtained based on the vision device. The step S10 can include: determine the type of the cooking utensil according to the height data and the image data; determine whether there is a smoke outlet position higher or lower than the preset height according to the type of the cooking utensil.

[0048] In this embodiment, the type of the cooking utensil is determined independently by the height data and the image data respectively. If the types of the cooking utensil determined by the two methods are consistent, the type of the corresponding cooking utensil can be determined. If the types of the cooking utensil determined by the two methods are different, the determination needs to be re-performed. In this embodiment, the type of the cooking utensil is determined by the two methods in a corroborative manner, which can effectively improve the accuracy of the determination of the type of the cooking utensil.

[0049] In an embodiment, the control method of the range hood further comprises the steps of: S30, when the upper smoke inlet and the lower smoke inlet are both opened, the rotating speed of the smoke exhaust fan is increased.

[0050] In this embodiment, when the upper smoke inlet and the lower smoke inlet are both opened, the rotating speed of the smoke exhaust fan is increased to ensure that the lower smoke inlet has sufficient smoke inlet negative pressure, thereby ensuring the smoke suction efficiency of the lower smoke inlet. Generally, the rotating speed of the smoke exhaust fan can be increased by increasing the power of the smoke exhaust fan.

[0051] In an embodiment, with reference to Figure 2 and Figure 6 , the lower smoke inlet 102 comprises a left side smoke inlet 102a and a right side smoke inlet 102b, and the left side smoke inlet 102a and the right side smoke inlet 102b are respectively provided with independent opening and closing mechanisms 12, so that the left side smoke inlet 102a and the right side smoke inlet 102b can be independently opened and closed, and the opening degree of each of the left side smoke inlet 102a and the right side smoke inlet 102b can be independently adjusted.

[0052] The step S20 comprises: determining the smoke amount difference between the left side and the right side below the smoke collecting hood, and controlling the opening and closing state of the left side smoke inlet and the right side smoke inlet according to the smoke amount difference.

[0053] The cooking scene corresponding to this embodiment is generally cooking on at least one of the two burners of the double burner stove. For example, the same cooking utensil is used on the two burners for cooking, such as a frying pan is used on both burners for frying. In this case, the smoke amount on the left side and the right side is equivalent, that is, there is almost no difference in the smoke amount on the left side and the right side. Therefore, the left side smoke inlet and the right side smoke inlet are controlled to be opened, and the opening degree is equivalent (see Figure 6For example, when different cooking utensils are used on the two stove ends for cooking, such as a stew pot is used on the left stove end for stewing and a frying pan is used on the right stove end for frying, the amount of smoke generated on the left side is less than that on the right side. In this case, the left-side smoke inlet and the right-side smoke inlet are both opened, and the opening degree of the right-side smoke inlet is greater than that of the left-side smoke inlet (see Figure 7 ), which increases the amount of smoke entering the right-side smoke inlet and reduces the amount of smoke entering the left-side smoke inlet. For another example, when a cooking utensil is used on one of the two stove ends for cooking, such as a soup pot is used on the right stove end for boiling soup, no smoke is generated on the left side. In this case, the left-side smoke inlet is closed, and only the right-side smoke inlet is opened.

[0054] Optionally, the step of determining the difference in the amount of smoke on the left and right sides below the hood and controlling the opening and closing states of the left-side smoke inlet and the right-side smoke inlet according to the difference in the amount of smoke includes: determining that the amount of smoke on the left and right sides below the hood is greater than a lower threshold; when the amount of smoke on the left and right sides below the hood is equivalent, opening the left-side smoke inlet and the right-side smoke inlet to an equivalent opening degree; when the amount of smoke on one side below the hood is greater than that on the other side, controlling the opening degree of one of the left-side smoke inlet and the right-side smoke inlet corresponding to the side with the greater amount of smoke to be greater than that of the other.

[0055] In this embodiment, it is first determined that the amount of smoke on the left and right sides below the hood is greater than a lower threshold, that is, the amount of smoke is generated on both sides. This cooking scenario usually corresponds to cooking on both stove ends of a double-stove-end stove. When the amount of smoke on the left and right sides below the hood is equivalent, it usually corresponds to using the same cooking utensil on both stove ends for cooking. In this case, the left-side smoke inlet and the right-side smoke inlet are opened to an equivalent opening degree (see Figure 6 ), so that the left-side smoke inlet and the right-side smoke inlet have equivalent smoke suction negative pressure to evenly distribute the smoke on the left and right sides. When the amount of smoke on one side below the hood is greater than that on the other side, it usually corresponds to using different cooking utensils on the two stove ends for cooking. In this case, the opening degree of one of the left-side smoke inlet and the right-side smoke inlet corresponding to the side with the greater amount of smoke is greater than that of the other (see Figure 7 and Figure 8 ), so that the smoke inlet on the side with the greater amount of smoke has greater smoke suction negative pressure to reasonably distribute the smoke suction negative pressure of the exhaust fan, thereby reducing the working air volume of the exhaust fan and the working noise.

[0056] In the present application, the threshold value of the smoke amount also generally refers to the concentration value of particulate matter or pollutants in the air. When the smoke amount is less than the lower limit of the threshold value, that is, the current concentration of smoke is less than the lower limit of the concentration threshold value, the smoke concentration is very low and rarely affects the health of the user, so that the smoke can be discharged without the extractor hood. However, the present design is not limited to this, and in other embodiments, the threshold value of the smoke amount can also refer to the optical density value of the smoke. The optical density reflects the smoke concentration by measuring the degree of light blocking of the smoke, and the larger the value, the higher the smoke concentration.

[0057] Optionally, the step of determining the smoke amount difference between the left and right sides below the smoke hood and controlling the opening and closing states of the left and right smoke inlets according to the smoke amount difference comprises: Determining that the smoke amount of only one side of the left and right sides below the smoke hood is less than the lower limit of the threshold value, controlling the left or right smoke inlet corresponding to the other side to be opened, and controlling the rotating speed of the smoke exhaust fan to be reduced.

[0058] In the present embodiment, it is first determined that the smoke amount of only one side of the left and right sides below the smoke hood is less than the lower limit of the threshold value, that is, one side of the left and right sides does not generate smoke amount, and the other side generates smoke amount. This cooking scene is usually cooking only on one of the two stove heads. In this case, only the corresponding side smoke inlet that generates smoke amount due to cooking is controlled to be opened, and the rotating speed of the smoke exhaust fan is controlled to be reduced to reduce the working noise.

[0059] In an embodiment, the detection device can include a smoke sensor, and the detection data includes smoke amount data of the left and right sides below the smoke hood obtained based on the smoke sensor to determine the smoke amount difference between the left and right sides below the smoke hood. In the present embodiment, a smoke sensor is generally arranged on the left and right sides of the front panel of the smoke hood to detect the smoke amount of the left and right sides, respectively, and then directly compare the smoke amounts of the left and right sides to obtain the smoke amount difference between the left and right sides below the smoke hood. However, the present design is not limited to this, and in other embodiments, a smoke sensor can also be arranged only in the middle of the front panel of the smoke hood. In this case, the smoke sensor can generally rotate left and right to detect the smoke amount of the left and right sides by rotating the smoke sensor.

[0060] In another embodiment, the detection device can include a vision device, and the detection data can include image data obtained by the vision device, and the type of the cooking utensil on the left and right sides below the fume hood can be determined according to the image data, and the smoke amount difference on the left and right sides below the fume hood can be determined according to the type of the cooking utensil. In this embodiment, the vision device includes a camera arranged on the front panel of the fume hood and downwardly arranged, so as to obtain the actual image of the cooking utensil on the stove through the camera, and then match the actual image with the pre-stored image of the cooking utensil, so as to determine the type of the corresponding cooking utensil (steamer, frying pan, soup pot, frying pan, etc.). It can be understood that different types of cooking utensils usually correspond to different cooking methods, and different cooking methods usually correspond to different smoke amounts. For example, a frying pan usually corresponds to a frying method, a steamer usually corresponds to a steaming method, a frying pan usually corresponds to a frying method, and a stewing pot usually corresponds to a stewing method. The smoke amount of frying and frying is usually greater than the smoke amount of steaming, and the smoke amount of steaming is usually greater than the smoke amount of stewing. However, the design is not limited thereto, and in other embodiments, the smoke amounts on the left and right sides can be directly identified according to the image data respectively, and then the smoke amount difference on the left and right sides can be directly compared.

[0061] In yet another embodiment, the detection device can further include a fire detection device, and the detection data can include fire data of the left and right stove heads obtained by the fire detection device, and the smoke amount difference on the left and right sides below the fume hood can be determined according to the fire difference between the left and right stove heads. In this embodiment, the fire detection device usually exists as a wireless communication module on the extractor hood, which is used to receive the fire data of the left and right stove heads wirelessly transmitted by the stove. Generally, the greater the fire, the greater the corresponding smoke amount, so that the smoke amount difference on the left and right sides can be determined according to the fire data of the left and right stove heads. However, the design is not limited thereto, and in other embodiments, a camera for shooting the fire image of the left and right stove heads can also be arranged beside the stove, and the wireless communication module on the extractor hood can receive the fire image and identify the fire data of the left and right stove heads according to the fire image, and then determine the smoke amount difference on the left and right sides according to the fire data of the left and right stove heads.

[0062] In still another embodiment, the detection device can further include at least two of the smoke sensor, the vision device and the fire detection device, so as to determine the smoke amount difference on the left and right sides through at least two determination methods, which can effectively improve the determination accuracy of the smoke amount difference.

[0063] The application further provides a range hood, which comprises a memory, a processor, and a control program of the range hood stored in the memory and executable on the processor, and the control program of the range hood, when executed by the processor, implements the steps of the control method of the range hood. Since all the technical solutions of the above-mentioned embodiments are adopted in the range hood, all the beneficial effects brought by the technical solutions of the above-mentioned embodiments are at least possessed, and here is no need to repeat them one by one.

[0064] The application further provides a computer readable storage medium, which stores a control program of a range hood, and the control program of the range hood, when executed by a processor, implements the steps of the control method of the range hood. Since all the technical solutions of the above-mentioned embodiments are adopted in the computer readable storage medium, all the beneficial effects brought by the technical solutions of the above-mentioned embodiments are at least possessed, and here is no need to repeat them one by one.

[0065] The above-mentioned are only the preferred embodiments of the application, and do not limit the protection scope of the application, and any equivalent structure transformation made according to the content of the application specification and the drawings, or direct / indirect application in other related technical fields under the inventive concept of the application is included in the protection scope of the application.

Claims

1. A control method of a range hood, characterized by, The method comprises the following steps: acquiring detection data from a detection device; determining the amount of smoke and / or the position of smoke in a cooking environment based on the detection data acquired by the detection device; controlling the opening and closing states of the upper smoke inlet and / or the lower smoke inlet of the smoke hood according to the amount of smoke and / or the position of smoke; 2. The control method of the range hood according to claim 1, characterized in that, controlling the upper smoke panel at the upper smoke inlet to move towards the smoke collection cavity of the smoke hood when the upper smoke inlet is controlled to be open. The step of controlling the opening and closing states of the upper smoke inlet and / or the lower smoke inlet of the smoke hood according to the amount of smoke and / or the position of smoke comprises:

3. The control method of the range hood according to claim 1, characterized in that, controlling the upper smoke inlet to be open when there is a smoke position higher than a preset height. The step of controlling the opening and closing states of the upper smoke inlet and / or the lower smoke inlet of the smoke hood according to the amount of smoke and / or the position of smoke comprises:

4. The control method of the range hood according to claim 3, characterized in that, controlling the upper smoke inlet and the lower smoke inlet to be open when there is a smoke position higher than a preset height and a smoke position lower than a preset height at the same time. The detection device comprises a distance measuring device and / or a visual device, and the detection data comprises height data acquired based on the distance measuring device and / or image data acquired based on the visual device. The step of determining the amount of smoke and / or the position of smoke in a cooking environment based on the detection data acquired by the detection device comprises: judging the type of the cooking appliance according to the height data and / or the image data; 5. The control method of the range hood according to claim 3, characterized in that, determining whether there is a smoke position higher or lower than a preset height according to the type of the cooking appliance. The control method of the range hood further comprises the step of:

6. The control method of the range hood according to claim 1, characterized in that, controlling the rotational speed of the smoke exhaust fan to increase when the upper smoke inlet and the lower smoke inlet are both open. The lower smoke inlet comprises a left side smoke inlet and a right side smoke inlet, and the step of controlling the opening and closing states of the upper smoke inlet and / or the lower smoke inlet of the smoke hood according to the amount of smoke and / or the position of smoke comprises:

7. The control method of the range hood according to claim 6, wherein determining the difference in the amount of smoke on the left and right sides below the smoke hood, and controlling the opening and closing states of the left side smoke inlet and the right side smoke inlet according to the difference in the amount of smoke. The step of determining the difference in the amount of smoke on the left and right sides below the smoke hood, and controlling the opening and closing states of the left side smoke inlet and the right side smoke inlet according to the difference in the amount of smoke comprises: determining that the amount of smoke on the left and right sides below the smoke hood is both greater than a threshold lower limit; controlling the left side smoke inlet and the right side smoke inlet to open to a comparable opening degree when the amount of smoke on the left and right sides below the smoke hood is comparable; 8. The control method of the range hood according to claim 6, characterized in that, controlling the opening degree of one of the left side smoke inlet and the right side smoke inlet corresponding to the side with a greater amount of smoke to be greater than the opening degree of the other when the amount of smoke on one side is greater than the amount of smoke on the other side. The step of determining the difference in the amount of smoke on the left and right sides below the smoke hood, and controlling the opening and closing states of the left side smoke inlet and the right side smoke inlet according to the difference in the amount of smoke comprises:

9. The control method of the range hood according to claim 6, wherein determining that the amount of smoke on only one of the left and right sides below the smoke hood is less than a threshold lower limit, controlling the left side smoke inlet or the right side smoke inlet corresponding to the other side to be open, and controlling the rotational speed of the smoke exhaust fan to decrease. The detection device comprises a smoke sensor and / or a visual device and / or a firepower detection device; The detection data includes smoke amount data of left and right sides below the smoke hood acquired by the smoke sensor, to determine the smoke amount difference of the left and right sides below the smoke hood; and / or The detection data includes image data acquired by the vision device, to determine the type of cooking appliance of the left and right sides below the smoke hood according to the image data, and determine the smoke amount difference of the left and right sides below the smoke hood according to the type of cooking appliance; and / or The detection data includes fire data of the left and right stove heads acquired by the fire detection device, to determine the smoke amount difference of the left and right sides below the smoke hood according to the fire difference of the left and right stove heads.

10. The control method of the hood according to any one of claims 1 to 9, characterized in that, The step of controlling the upper smoke inlet panel to move towards the smoke collection cavity of the smoke hood when the upper smoke inlet is controlled to open includes: When the upper smoke inlet is controlled to open, the upper smoke inlet panel is controlled to move towards the smoke collection cavity to a preset inclined state; in the preset inclined state, the upper smoke inlet panel is inclined from bottom to top away from the upper smoke inlet.

11. A range hood characterized by, The extractor hood comprises a memory, a processor, and a control program of the extractor hood stored in the memory and executable on the processor, and the control program of the extractor hood is executed by the processor to implement the steps of the control method of the extractor hood according to any one of claims 1 to 10.

12. A computer-readable storage medium, characterized in that, The computer readable storage medium stores the control program of the extractor hood, and the control program of the extractor hood is executed by the processor to implement the steps of the control method of the extractor hood according to any one of claims 1 to 10.

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