Control method of range hood, range hood and computer readable storage medium

Abstract

The invention provides a control method of a range hood, the range hood and a computer readable storage medium, and relates to the technical field of range hoods. The range hood is provided with a main fan and an air curtain fan. The control method comprises the steps that the actual operation state of the main fan is obtained; acquiring control information of the air curtain fan based on the actual operation state of the main fan; the actual operation state of the air curtain fan is controlled through the control information; before the actual operation state of the main draught fan is obtained, the control method further comprises the steps that in response to a starting instruction, the main draught fan and the air curtain draught fan are controlled to work; in response to the fact that the main fan enters the balance state, the step of obtaining the actual operation state of the main fan is executed; wherein in the balance state, the rotating speed of the main fan is matched with the pipeline pressure of the range hood. The linkage control between the main fan and the air curtain fan can be realized, the performance of the range hood is improved, the complexity and the equipment cost of the range hood are reduced, and the problem of low state detection accuracy caused by the unstable state of the main fan at the initial starting stage is solved.

Description

Technical Field

[0001] The present application relates to the technical field of range hoods, and in particular to a control method for a range hood, a range hood, and a computer-readable storage medium. Background Art

[0002] In order to improve the smoke extraction effect of the range hood, an air curtain device can be arranged on the range hood to isolate the user from the escaping oil smoke when the user is in use.

[0003] In the related art, a temperature, gas and other environmental monitoring devices are usually installed on the range hood, and the intensity of the air curtain airflow is controlled based on the monitoring results so that the intensity of the air curtain airflow is adapted to the current cooking environment. However, this method will increase the complexity and equipment cost of the range hood. Summary of the invention

[0004] The present application provides a control method for a range hood to achieve linkage control between a main fan and an air curtain fan, improve the performance of the range hood, reduce the complexity and equipment cost of the range hood, and improve the problem of low state detection accuracy caused by the unstable state of the main fan in the initial stage of startup.

[0005] In order to solve the above technical problems, the present application provides a control method for a range hood. The range hood is provided with a main fan and an air curtain fan, and the control method comprises: obtaining the actual operating state of the main fan; obtaining control information of the air curtain fan based on the actual operating state of the main fan; and controlling the actual operating state of the air curtain fan using the control information; wherein, before obtaining the actual operating state of the main fan, the control method further comprises: controlling the main fan and the air curtain fan to work in response to a start instruction; and executing the step of obtaining the actual operating state of the main fan in response to the main fan entering a balanced state; wherein, in the balanced state, the rotation speed of the main fan matches the pipe pressure of the range hood.

[0006] In some embodiments, determining the control information of the air curtain fan based on the actual operating status of the main fan includes: based on a preset relationship between the operating status of the main fan and the control information of the air curtain fan, acquiring control information corresponding to the actual operating status of the main fan as the control information of the air curtain fan.

[0007] In some embodiments, the operating state of the main fan includes at least a first low speed state and a first high speed state, the operating state of the air curtain fan includes at least a second low speed state and a second high speed state, the control information includes first control information and second control information, and the control information of the air curtain fan determined based on the actual operating state of the main fan includes: in response to the actual operating state of the main fan being the first low speed state, obtaining the first control information; in response to the actual operating state of the main fan being the first high speed state, obtaining the second control information; and using the control information to control the actual operating state of the air curtain fan includes: using the first control information to control the air curtain fan to operate in the second low speed state; using the second control information to control the air curtain fan to operate in the second high speed state.

[0008] In some embodiments, the rotation speed of the main fan is positively correlated with the rotation speed of the air curtain fan.

[0009] In some embodiments, the control information includes voltage information, and using the control information to control the actual operating state of the air curtain fan includes: using the voltage information to control the driving voltage of the air curtain fan to adjust the rotation speed of the air curtain fan.

[0010] In some embodiments, in response to the start instruction, controlling the main fan and the air curtain fan to operate includes: controlling the main fan to operate in a target operating state, and controlling the air curtain fan to operate in a low speed state.

[0011] In some embodiments, the control method further includes: adjusting the actual operating state of the main fan based on environmental information.

[0012] To solve the above technical problems, the present application provides a range hood, which includes a main fan, an air curtain fan, and a controller electrically connected to the main fan and the air curtain fan, respectively, and the controller controls the operation of the main fan and the air curtain fan using the above control method.

[0013] In order to solve the above technical problems, the present application provides a computer-readable storage medium on which program instructions are stored, and the program instructions are executed by a processor to implement the above control method.

[0014] The beneficial effects of the present application are as follows: the present application first obtains the actual operating state of the main fan of the range hood, and obtains the control information of the air curtain fan based on the actual operating state of the main fan, and uses the control information to control the actual operating state of the air curtain fan; wherein, before obtaining the actual operating state of the main fan, the control method further includes: in response to the start instruction, controlling the main fan and the air curtain fan to work; in response to the main fan entering the equilibrium state, executing the step of obtaining the actual operating state of the main fan; wherein, in the equilibrium state, the rotation speed of the main fan matches the pipeline pressure of the range hood. In this way, the present application can control the actual operating state of the air curtain fan based on the actual operating state of the main fan, and can realize the linkage control between the main fan and the air curtain fan, so that the actual motion state between the two is more matched, which is conducive to improving the performance of the range hood. And compared with the air curtain control of the existing range hood, the range hood of the present application does not need to set up an additional monitoring device, so the complexity and equipment cost of the range hood are relatively low. Furthermore, obtaining the actual operating state of the main fan after the main fan enters a balanced state can improve the problem of low state detection accuracy caused by the unstable state of the main fan in the initial start-up period. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which: Figure 1 This is a schematic structural diagram of an embodiment of a range hood of the present application; Figure 2 This is a flow chart of an embodiment of a method for controlling a range hood of the present application; Figure 3 It is a flow chart of another embodiment of the control method of the range hood of the present application; Figure 4 It is a flow chart of another embodiment of the control method of the range hood of the present application; Figure 5 It is a structural schematic diagram of an embodiment of a computer-readable storage medium of the present application; Figure 6 It is a structural schematic diagram of another embodiment of the range hood of the present application; Figure 7 yes Figure 6 an exploded view of the illustrated embodiment; Figure 8 yes Figure 7 A schematic cross-sectional structure diagram of the air outlet channel in the illustrated embodiment; Fig. 9 It is a structural schematic diagram of another embodiment of the range hood of the present application; Fig.10 It is a structural schematic diagram of another embodiment of the range hood of the present application; Fig.11 It is a structural schematic diagram of an embodiment of a smoke inlet plate of the smoke exhaust fan of the present application; Fig.12 yes Fig.11 Schematic diagram of the flow of condensed oil on the smoke inlet plate in the illustrated embodiment. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0017] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), such directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0018] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0019] This application first proposes a smoke machine, such as Figure 1 As shown, Figure 11 is a schematic diagram of the structure of an embodiment of the range hood of the present application. The range hood of the present embodiment (not shown) includes a range hood body 11, a main fan 12, an air curtain fan 13 and a controller 14. The main fan 12, the air curtain fan 13 and the controller 14 are arranged on the range hood body 11. The controller 14 is electrically connected to the main fan 12 and the air curtain fan 13 to control the operation of the main fan 12 and the air curtain fan 13. Among them, the main fan 12 is the main smoking component of the range hood, and its operating state can be adjusted with at least one of the working state of the range hood, the working state of the stove, the environmental state, etc. The air curtain fan 13 is used to form an air curtain airflow, which is mainly used to separate the oil smoke escaping toward the user side from the user. Among them, the controller 14 uses the control method of the range hood of the following embodiment to control the operation of the main fan 12 and the air curtain fan 13, which can realize the linkage control between the main fan 12 and the air curtain fan 13, so that the actual motion state between the two is more matched, which is conducive to improving the performance of the range hood. Furthermore, compared with the air curtain control of the existing range hood, the range hood of this embodiment does not need to be additionally provided with a monitoring device, so the complexity and equipment cost of the range hood are relatively low.

[0020] The controller 14 may be a micro control unit, other control chips or non-integrated circuits.

[0021] In some embodiments, Figure 2 As shown, Figure 2 1 is a flow chart of an embodiment of a control method for a range hood of the present application. The control method of this embodiment includes steps S21 to S23.

[0022] Step S21: Acquire the actual operating status of the main fan.

[0023] The operating state of the main fan may include a rotation speed or a working mode, such as a low rotation speed mode, a high rotation speed mode, etc.

[0024] The controller can determine the actual operating state of the main fan based on electrical signals such as the actual driving current of the main fan, or the controller can also obtain the actual speed of the main fan based on components such as an encoder, or the controller can also determine the actual operating mode based on the actual speed.

[0025] Step S22: acquiring control information of the air curtain fan based on the actual operating status of the main fan.

[0026] The controller can pre-store a mapping relationship between the motion state of the main fan and the control information of the air curtain fan; the mapping relationship can be a specific correspondence between the rotational speed or working mode and the control information, etc. The controller can obtain the control information corresponding to the actual operating state of the main fan as the control information of the air curtain fan by looking up the table; the mapping relationship can be a functional relationship between the rotational speed or working mode and the control information, etc. The controller uses the functional relationship to calculate the control information corresponding to the actual operating state of the main fan as the control information of the air curtain fan.

[0027] The control information of the air curtain fan may be control parameters or performance parameters of the air curtain fan, such as electrical signals such as rotation speed and drive voltage; the control information may also be a control strategy, such as an adjustment strategy of rotation speed or drive voltage.

[0028] In some embodiments, the method for determining the control information of the air curtain fan based on the actual operating state of the main fan includes: based on the preset relationship between the operating state of the main fan and the control information of the air curtain fan, obtaining the control information corresponding to the actual operating state of the main fan as the control information of the air curtain fan. The controller pre-stores the preset relationship between the operating state of the main fan and the control information of the air curtain fan. After the controller obtains the actual operating state of the main fan, the control information of the air curtain fan corresponding to the actual operating state of the main fan can be directly obtained through the preset relationship as the control information of the air curtain fan. In this way, the control efficiency of the controller can be improved, thereby improving the smoking performance of the range hood. Among them, the preset relationship can be a corresponding relationship between specific states and parameters, or a functional relationship, etc.

[0029] Step S23: using the control information to control the actual operating state of the air curtain fan.

[0030] The controller uses the control information to control the operation of the air curtain fan to adjust the actual operating state of the air curtain fan.

[0031] This embodiment can control the actual operating state of the air curtain fan based on the actual operating state of the main fan, and can realize the linkage control between the main fan and the air curtain fan, so that the actual motion states between the two are more matched, which is conducive to improving the performance of the range hood. Compared with the air curtain control of the existing range hood, the range hood of this embodiment does not need to be equipped with an additional monitoring device, so the complexity and equipment cost of the range hood are relatively low.

[0032] In some embodiments, the control information includes voltage information, and the method for controlling the actual operating state of the air curtain fan using the control information includes: controlling the driving voltage of the air curtain fan using the voltage information to adjust the speed of the air curtain fan. This embodiment directly associates the voltage information of the air curtain fan with the state information of the main fan, so that the controller can control the driving voltage of the air curtain fan faster and more accurately.

[0033] Of course, in some embodiments, the control information may also be the rotational speed, etc. The controller first converts the rotational speed into voltage information, and then uses the voltage information to control the driving voltage of the air curtain fan; or the controller obtains the actual rotational speed of the air curtain fan in real time, and adjusts the driving voltage of the air curtain fan according to the relationship between the rotational speed and the actual rotational speed, thereby adjusting the actual rotational speed of the air curtain fan.

[0034] In some embodiments, the operating state of the main fan includes at least a first low speed state and a first high speed state, the operating state of the air curtain fan includes at least a second low speed state and a second high speed state, the control information includes first control information and second control information, and the implementation method of determining the control information of the air curtain fan based on the actual operating state of the main fan includes: in response to the actual operating state of the main fan being the first low speed state, obtaining the first control information; in response to the actual operating state of the main fan being the first high speed state, obtaining the second control information. The implementation method of controlling the actual operating state of the air curtain fan using the control information includes: using the first control information to control the air curtain fan to operate in the second low speed state; using the second control information to control the air curtain fan to operate in the second high speed state.

[0035] When the controller determines that the actual operating state of the main fan is a first low-speed state, the controller obtains first control information associated with the first low-speed state, and uses the first control information to control the fan air curtain to operate in a second low-speed state; when the controller determines that the actual operating state of the main fan is a first high-speed state, the controller obtains second control information associated with the first high-speed state, and uses the second control information to control the fan air curtain to operate in a second high-speed state.

[0036] When the speed of the main fan is low, the pipe pressure of the range hood is small, the main fan can achieve a better smoke extraction effect, and the air curtain fan is less needed. At this time, the noise generated by the main fan is small, so the air curtain fan can be controlled to operate at a low speed, that is, the driving voltage can be smaller to avoid excessive noise from the air curtain fan and increase the overall noise of the range hood, and it can also save energy.

[0037] When the speed of the main fan is high, the pipe pressure of the range hood is relatively large, and the main fan needs the cooperation of the air curtain fan to improve the smoke extraction effect. At this time, the noise generated by the main fan is large, so the speed of the air curtain fan can be increased, that is, the voltage can be larger; and because the noise generated by the main fan is large, the noise of the air curtain fan will not worsen the overall noise problem of the range hood.

[0038] In some embodiments, the operating state of the main fan can be divided into more operating states, and the actual operating state of the air curtain fan can be controlled according to different operating states to improve the precision of the linkage control, thereby improving the overall performance of the range hood, such as improving the smoking effect, reducing noise, saving power consumption, etc.

[0039] In some embodiments, the speed of the main fan is positively correlated with the speed of the air curtain fan. The positive correlation can be represented by a speed-speed curve relationship, a drive current-drive voltage curve relationship, or a speed-drive voltage curve relationship, etc., as the above-mentioned preset relationship.

[0040] The specific correspondence between the operating state or operating parameters of the main fan of the present application and the control information of the air curtain fan can be designed and adjusted based on factors such as the specific structure of the range hood and the use environment.

[0041] In some embodiments, Figure 3 As shown, Figure 3 1 is a flow chart of another embodiment of the control method of the range hood of the present application. The control method of this embodiment specifically includes steps S31 to S34.

[0042] Step S31: In response to the start instruction, the main fan and the air curtain fan are controlled to operate.

[0043] The controller receives the start command of the range hood and controls the main fan and the air curtain fan to enter the working state.

[0044] The controller controls the main fan to operate in a target operating state, and the target operating state is determined according to at least one of a user selection instruction, a current operating state of the range hood, a current operating state of the cooker, a current environmental state, etc. When the controller controls the main fan to enter the operating state, the controller also controls the air curtain fan to enter the operating state to form an air curtain airflow, which separates the oil smoke escaping toward the user side from the user and improves the smoking effect.

[0045] In some embodiments, the controller controls the main fan to operate in the target operating state, and controls the air curtain fan to operate in the low speed state. When the range hood is turned on, before obtaining the actual operating state of the main fan, the controller controls the air curtain fan to start at a low speed, which can save energy and reduce noise. The low speed state refers to the lowest speed state that enables the air curtain fan to form an air curtain airflow.

[0046] Step S32: in response to the main fan entering a balanced state, the actual operating state of the main fan is obtained; wherein, in the balanced state, the rotation speed of the main fan matches the duct pressure of the range hood.

[0047] After the range hood is turned on, it will automatically adjust to a certain working condition for stable operation according to the pipeline pressure (such as the pipe resistance at the rear end and the exhaust resistance of the exhaust duct). For example, when a large number of users use the range hood at the same time, the exhaust duct resistance increases again, and the main fan will increase the speed again to overcome the resistance and ensure a certain exhaust volume; when the pipeline pressure is low, the main fan only needs to run at a lower speed to ensure the required air volume.

[0048] The controller stores multiple target operating states of the main fan, that is, multiple equilibrium states. In each equilibrium state, there is a preset relationship between the speed of the main fan and the pipe pressure of the range hood. If the main fan is in the target operating state, and the actual speed of the main fan and the pipe pressure meet the corresponding preset relationship, that is, they match, then it is considered that the main fan has entered a balanced state. The controller obtains the actual operating state of the main fan after the main fan enters the balanced state to improve the problem of low detection accuracy caused by the unstable state of the main fan in the initial startup.

[0049] Step S33: acquiring control information of the air curtain fan based on the actual operating status of the main fan.

[0050] The specific implementation of step S33 may refer to the above step S22.

[0051] Step S34: using the control information to control the actual operating state of the air curtain fan.

[0052] The specific implementation of step S34 may refer to the above step S23.

[0053] This embodiment can control the actual operating state of the air curtain fan based on the actual operating state of the main fan, and can realize the linkage control between the main fan and the air curtain fan, so that the actual motion states between the two are more matched, which is conducive to improving the performance of the range hood. Compared with the air curtain control of the existing range hood, the range hood of this embodiment does not need to be equipped with an additional monitoring device, so the complexity and equipment cost of the range hood are relatively low.

[0054] Furthermore, the controller obtains the actual operating status of the main fan after the main fan enters the equilibrium state to improve the problem of low detection accuracy caused by the unstable state of the main fan in the initial stage of startup. Therefore, this embodiment can improve the accuracy of wind curtain control and enhance the performance of the range hood.

[0055] In some embodiments, the control method of the range hood may further include: adjusting the actual operating state of the main fan based on environmental information, and the controller uses the above-mentioned control method to continue to control the operation of the air curtain fan based on the actual operating state of the main fan, so that the operating states of the main fan and the air curtain fan match the cooking environment, thereby improving the smoking effect, etc.

[0056] In some embodiments, Figure 4 As shown, Figure 4This is a flow chart of another embodiment of the control method of the range hood of the present application. In this embodiment, when the range hood is turned on, the main fan and the air curtain fan are turned on at the same time, and the air curtain fan runs at a low speed (low voltage); then, according to the pipeline conditions, the controller of the range hood automatically adjusts the speed of the main fan to a balanced state for stable operation; then, according to the operating state of the main fan, the controller automatically adjusts the driving voltage of the air curtain fan to adjust the operating state of the air curtain fan; then, the range hood runs stably in the new state.

[0057] The present application first obtains the actual operating state of the main fan of the range hood, and obtains control information of the air curtain fan based on the actual operating state of the main fan, and uses the control information to control the actual operating state of the air curtain fan. In this way, the present application can control the actual operating state of the air curtain fan based on the actual operating state of the main fan, and can realize the linkage control between the main fan and the air curtain fan, so that the actual motion state between the two is more matched, which is conducive to improving the performance of the range hood. And compared with the air curtain control of the existing range hood, the range hood of the present application does not need to set up an additional monitoring device, so the complexity and equipment cost of the range hood are relatively low.

[0058] The present application proposes a control strategy for the linkage problem between the air curtain assembly and the range hood as a whole. This control strategy does not require the additional setting of environmental monitoring devices such as temperature and gas. It only needs to write the operating status of the main fan and the control information of the air curtain fan, such as the correlation between the driving voltage, into the controller of the range hood. When the whole machine is running, the driving voltage of the air curtain fan is adjusted accordingly according to the actual operating status of the main wind to control the operating status of the air curtain fan.

[0059] The present application further proposes a smoke machine, such as Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, the range hood of this embodiment includes a range hood body (not shown), a main fan 12, an air curtain fan 13 and a controller 14. The controller 14 uses at least the above method to control the operation of the main fan 12 and the air curtain fan 13. The range hood body includes a first cavity 110 and a second cavity 120. The first cavity 110 includes a smoke inlet plate 111, and the smoke inlet plate 111 is provided with a smoke inlet hole 1111; the second cavity 120 is connected to the first cavity 110; the main fan 12 is provided in the second cavity 120, so that the range hood generates negative pressure in the range hood cavity through the main fan 12, and absorbs oil smoke through the smoke inlet hole 1111. The range hood is provided with an oil net 1112 at the smoke inlet hole 1111.

[0060] The second cavity 120 includes: a first back plate 122, a frame 123 and a front cover plate 124. When the range hood is fixedly mounted on a wall, the first back plate 122 is arranged close to the wall, and the main fan 12 is arranged in the frame 123; the main air inlet 1211 of the main fan 12 faces the first back plate 122, and a certain distance is arranged between the main air inlet 1211 and the first back plate 122. In some embodiments, the distance between the main air inlet 1211 and the first back plate 122 is not less than 80 mm, so that the resistance to gas flow between the main air inlet 1211 and the smoke inlet 1111 is smaller, the path is shorter, and the smoke-inducing capacity of the range hood is stronger.

[0061] The air curtain device 115 includes an air curtain fan 13 and an air outlet channel 1152. The air curtain fan 13 includes a second air inlet 11511 and a second air outlet. The air outlet channel 1152 includes a first air inlet 11521 and a first air outlet 11522. The second air inlet 11511 and the first air outlet 11522 are respectively connected to the outside of the range hood. The second air outlet is directly connected to the first air inlet 11521, and the first air outlet 11522 faces the smoke inlet hole 1111, that is, the direction of the air curtain airflow blown out from the first air outlet 11522 faces the smoke inlet hole 1111. As a result, the rising and leaking oil smoke can be carried to the smoke inlet hole 1111 by the air curtain airflow blown out by the air curtain device 115 in time, so as to be sucked away and discharged by the range hood, thereby avoiding oil smoke leakage and improving the smoking effect.

[0062] The range hood includes two air curtain devices 115 which are respectively arranged at the front side of the range hood in the horizontal direction.

[0063] In some embodiments, Figure 6 , Figure 7 As shown, the first cavity 110 includes a second back plate 112, a first top plate 113, and a second top plate 114. The second top plate 114 is arranged on the side of the first cavity 110 away from the second cavity 120, and the second top plate 114 is connected to the smoke inlet plate 111. The first top plate 113 and the second top plate 114 form a wind curtain cavity, and the wind curtain device 115 is arranged in the wind curtain cavity. The wind curtain device 115 is arranged at the top of the first cavity 110 and is located on the smoke inlet side of the smoke inlet plate 111. The first top plate 113 is provided with a plurality of air inlet holes 1131 at the position corresponding to the second air inlet 11511.

[0064] like Figure 8As shown, the air outlet channel 1152 includes a top cover 11523 and a bottom cover 11524, the top cover 11523 is arranged on the side of the air outlet channel 1152 away from the smoke inlet hole 1111, and the bottom cover 11524 is arranged on the side of the air outlet channel 1152 close to the smoke inlet hole 1111, and the top cover 11523 and the bottom cover 11524 form a wind cavity of the air outlet channel 1152. In some embodiments, in order to make the air curtain airflow in the air outlet channel 1152 smoother, the structure of the top cover 11523 and the bottom cover 11524 near the first air outlet 11522 is set to be an arc shape, wherein the first angle θ between the first arc tangent a of the top cover 11523 at the first air outlet 11522 and the horizontal direction is in the range of 0-70°, and the second angle β between the second arc tangent b of the bottom cover 11524 at the first air outlet 11522 and the horizontal direction is in the range of 0-45°. Furthermore, in some embodiments, the third angle α between the first arc tangent a and the second arc tangent b is in the range of 0-20°, thereby ensuring that the wind curtain airflow emitted from the first air outlet 11522 of the wind curtain device 115 is directed toward the smoke inlet 1111, thereby carrying the rising oil smoke to the smoke inlet 1111 in time, and preventing the wind curtain airflow emitted from the first air outlet 11522 from spreading too much and affecting the elicitation effect.

[0065] In some embodiments, to ensure the pressurization effect of the air outlet channel 1152 and the speed of the wind curtain airflow emitted from the first air outlet 11522 , the width of the air outlet channel 1152 gradually decreases in the direction from the first air inlet 11521 to the first air outlet 11522 .

[0066] An air outlet is provided at a position of the second top plate 114 corresponding to the first air outlet 11522 so as to connect the first air outlet 11522 with the outside of the range hood.

[0067] In some embodiments, further see Fig. 9 , which is different from the above embodiment in that: a plurality of air inlet holes 21911 are provided on the first side plate 2191 of the first cavity 110. Thus, the second air inlet 11511 (see the above embodiment) of the air curtain device 115 is connected to the outside of the range hood, so as to avoid blocking the air inlet holes 21911 when the user sets wall cabinets or other devices on both sides of the second cavity 120, thereby affecting the air curtain airflow emitted by the air curtain device 115 and reducing the smoking efficiency of the range hood.

[0068] In some embodiments, in order to further increase the air intake of the air curtain device 115, the total area of ​​the plurality of air inlet holes 21911 is set to be greater than 0.5 times the area of ​​the second air inlet 11511 of the air curtain fan 13. In order to prevent the air inlet hole 21911 from being blocked by the air curtain fan 13 and reduce the resistance of the air curtain fan 13 to inhale air from the outside of the range hood, the distance between the first side plate 2191 and the side of the air curtain fan 13 close to the first side plate 2191 is set to be greater than 6 mm. In order to prevent the second air inlet 11511 of the air curtain fan 13 from being blocked by the first top plate 113, the distance between the second air inlet 11511 and the first top plate 113 is set to be 6-10 mm.

[0069] In some embodiments, further see Fig.10 , the decorative cover 160 (see the above embodiment) is arranged around the side of the front cover plate 124 and the frame 123, and a certain distance is set between the decorative cover 160 and the front cover plate 124, so that the decorative cover 160 and the front cover plate 124 form an air curtain cavity. Part of the air curtain device 115 is arranged outside the side wall on the same side of the second cavity 120 and the smoke inlet 1111. In this way, the air curtain device 115 can take in air from the top of the range hood, that is, there is no need to set an air inlet corresponding to the air curtain device 115 on the outer surface of the range hood, which can improve the aesthetics of the range hood. Furthermore, the air curtain device 115 is partially arranged in the air curtain cavity formed by the front cover plate 124 and the decorative cover 160, thereby reducing the space occupied by the air curtain device 115 in the range hood, thereby reducing the volume of the range hood.

[0070] The air curtain device 115 takes in air from the decorative cover 160 of the range hood and the top of the second cavity 120 ; the second air inlet 11511 (see the above embodiment) of the air curtain fan 13 faces the decorative cover 160 .

[0071] In some embodiments, Fig.11 and Fig.12 As shown, the smoke inlet plate 111 includes two first tuyere plates 1101 and second tuyere plates 1102 adjacently arranged along the first direction X, the first tuyere plate 1101 and the second tuyere plate 1102 include proximal edges close to each other and distal edges far away from each other, the proximal edge is close to the middle of the smoke inlet plate 111 in the first direction X, the distal edge is close to both ends of the smoke inlet plate 111 in the first direction X, and the proximal edges of the first tuyere plate 1101 and the second tuyere plate 1102 are connected to each other through a connecting plate 1103. The connecting plate 1103 protrudes forwards respectively compared to the distal edges of the first tuyere plate 1101 and the second tuyere plate 1102, and the first tuyere plate 1101 and the second tuyere plate 1102 extend from the proximal edge to the distal edge and present an inclined state, that is, the distal edges of the first tuyere plate 1101 and the second tuyere plate 1102 are inclined toward the rear side.

[0072] In some embodiments, the first air inlet and the second air inlet are respectively provided on the first air inlet plate 1101 and the second air inlet plate 1102, that is, the smoke inlet hole 1111 includes the first air inlet and the second air inlet, and the opening area of ​​the first air inlet and the second air inlet gradually decreases in the direction from the proximal edge to the distal edge. According to the principle of aerodynamics, when the oil smoke passes through the distal edges of the first air inlet and the second air inlet, the flow rate of the oil smoke can be increased due to the smaller opening area, thereby improving the suction efficiency on both sides of the range hood.

[0073] In some embodiments, the overall appearance of the smoke inlet plate 111 is M-shaped with a convex middle portion and concave on both sides in the first direction X. The middle portion of the smoke inlet plate 111 is convex, and the proximal edges of the first air inlet and the second air inlet are close to the main fan and the stove. The path that the oil smoke passes through before entering the main fan is short, and the expansion of the negative pressure area can be achieved at a lower cost.

[0074] The upper plate 1105 is inclined downward from the proximal edge to the distal edge, roughly forming an inclined triangle. In contrast to the upper plate 1105, the lower plate 1106 is inclined downward from the distal edge to the proximal edge, roughly forming an inclined triangle. The convex design in the middle portion makes the two inclined surface areas of the upper plate 1105 and the lower plate 1106 relatively reduced, which can effectively reduce the contact area of ​​the oil smoke on the upper plate 1105 and the lower plate 1106. The smaller formation area of ​​condensed oil helps to reduce the accumulation of oil stains. At the same time, the condensed oil inside the entire cavity can be guided to the middle position of the bottom of the smoke inlet plate 111 along the guiding effect of the inclined upper plate 1105, the side plate 1104, and the inclined lower plate 1106. The condensed oil on the connecting plate 1103 can slide vertically downward along the connecting plate 1103 to the middle position of the bottom of the smoke inlet plate 111, and flow downward to the oil cup, which is helpful for collecting and cleaning the condensed oil.

[0075] In some embodiments, the overall air inlet of the smoke inlet plate 111 presents a special-shaped air inlet with a larger middle air inlet and smaller air inlets on both sides. By increasing the air intake area of ​​the first air inlet and the second air inlet closer to the middle of the smoke inlet plate 111, since the middle air inlet is closer to the main fan and the stove, it can capture the fumes released from the double stoves more directly and quickly, and the smoking effect is good.

[0076] In some embodiments, an oil net 1112 with a matching contour is provided at the first air inlet and the second air inlet, which can ensure that the oil net 1112 can fit tightly with the first air inlet and the second air inlet after installation to prevent oil smoke leakage. In order to further improve the smoking effect, the mesh of the oil net 1112 is designed to have an irregular aperture size, and the mesh opening area near the distal edge is larger than the mesh opening area near the proximal edge. The mesh opening area at the distal edge of the smoke inlet plate 111 is larger, which is conducive to the circulation of smoke, reduces resistance, and allows oil smoke to pass through the oil net faster. The mesh opening area at the proximal edge of the smoke inlet plate 111 is smaller, which can better intercept grease particles and prevent them from entering the internal main fan, etc., reducing cleaning and maintenance costs.

[0077] The present application further proposes a computer-readable storage medium, such as Figure 5 As shown, Figure 5 The computer-readable storage medium 50 of the embodiment of the present application stores program instructions 51 therein, and the program instructions 51 are executed by the processor to implement the control method of the range hood.

[0078] Among them, the program instructions 51 can form a program file and be stored in the above-mentioned storage medium in the form of a software product, so that an electronic device (which can be a personal computer, server, or network device, etc.) or a processor (processor) executes all or part of the steps of each implementation method of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes, or terminal devices such as computers, servers, mobile phones, tablets, etc.

[0079] The computer-readable storage medium 50 of this embodiment may be, but is not limited to, a USB flash drive, an SD card, a PD optical drive, a mobile hard disk, a large-capacity floppy drive, a flash memory, a multimedia memory card, a server, and the like.

[0080] In one embodiment, a computer program product or computer program is provided, the computer program product or computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium. A processor of an electronic device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the electronic device performs the steps in the above-mentioned method embodiments.

[0081] In addition, if the above functions are implemented in the form of software functions and sold or used as independent products, they can be stored in a storage medium readable by a mobile terminal, that is, the present application also provides a storage device storing program data, the program data can be executed to implement the method of the above embodiment, and the storage device can be, for example, a USB flash drive, an optical disk, a server, etc. In other words, the present application can be embodied in the form of a software product, which includes a number of instructions for enabling a smart terminal to execute all or part of the steps of the method described in each embodiment.

[0082] The above are only implementation methods of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method for controlling a range hood, characterized in that: The range hood is provided with a main fan and an air curtain fan, and the control method comprises: Obtaining the actual operating status of the main fan; Acquiring control information of the air curtain fan based on the actual operating status of the main fan; Using the control information to control the actual operating state of the air curtain fan; Wherein, before obtaining the actual operating state of the main fan, the control method further includes: In response to the start instruction, controlling the main fan and the air curtain fan to operate; In response to the main fan entering a balanced state, executing the step of obtaining the actual operating state of the main fan; Wherein, in the equilibrium state, the rotation speed of the main fan matches the pipeline pressure of the range hood.

2. The control method according to claim 1, characterized in that: The determining of the control information of the air curtain fan based on the actual operating state of the main fan comprises: Based on a preset relationship between the operating state of the main fan and the control information of the air curtain fan, the control information corresponding to the actual operating state of the main fan is obtained as the control information of the air curtain fan.

3. The control method according to claim 1, characterized in that: The operating state of the main fan includes at least a first low speed state and a first high speed state, the operating state of the air curtain fan includes at least a second low speed state and a second high speed state, the control information includes first control information and second control information, and the control information of the air curtain fan is determined based on the actual operating state of the main fan, including: In response to the actual operating state of the main fan being the first low speed state, acquiring first control information; In response to the actual operating state of the main fan being the first high speed state, acquiring second control information; The method of controlling the actual operating state of the air curtain fan by using the control information includes: Using the first control information to control the air curtain fan to operate in a second low speed state; The second control information is used to control the air curtain fan to operate at a second high speed state.

4. The control method according to claim 3, characterized in that: The rotation speed of the main fan is positively correlated with the rotation speed of the air curtain fan.

5. The control method according to claim 2, characterized in that: The control information includes voltage information, and the actual operating state of the air curtain fan is controlled by using the control information, including: The voltage information is used to control the driving voltage of the air curtain fan to adjust the rotation speed of the air curtain fan.

6. The control method according to claim 1, characterized in that: The step of controlling the main fan and the air curtain fan to operate in response to the start instruction includes: The main fan is controlled to operate in a target operating state, and the air curtain fan is controlled to operate in a low speed state.

7. The control method according to any one of claims 1 to 6, characterized in that: The control method further comprises: The actual operating state of the main fan is adjusted based on the environmental information.

8. A range hood, characterized in that: The range hood comprises: a main fan, an air curtain fan and a controller electrically connected to the main fan and the air curtain fan respectively, and the controller controls the operation of the main fan and the air curtain fan using the control method described in any one of claims 1 to 7.

9. A computer-readable storage medium, characterized in that: Program instructions are stored thereon, and the program instructions are executed by a processor to implement the control method according to any one of claims 1 to 7.

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