Control Method of Range Hood, Range Hood and Computer Readable Storage Medium

Abstract

The present application provides a control method for a range hood, a range hood, and a computer-readable storage medium. The present application relates to the technical field of range hoods. The range hood is provided with a main blower and an air curtain blower. The control method includes: obtaining the actual operating state of the main blower; obtaining control information for the air curtain blower based on the actual operating state of the main blower; using the control information to control the actual operating state of the air curtain blower; wherein, before obtaining the actual operating state of the main blower, the control method further includes: in response to an opening instruction, controlling the main blower and the air curtain blower to operate; in response to the main blower entering a balanced state, performing the step of obtaining the actual operating state of the main blower; wherein, in the balanced state, the rotation speed of the main blower matches the duct pressure of the range hood. The present application can achieve the interlock control between the main blower and the air curtain blower, improve the performance of the range hood, reduce the complexity and equipment cost of the range hood, and improve the problem of low accuracy of state detection caused by the unstable state of the main blower in the initial stage of opening.

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] To improve the smoking effect of the range hood, an air curtain device can be arranged on the range hood so that when the user uses it, the user can be separated from the escaping oil fumes.

[0003] In the related art, environmental monitoring devices such as temperature and gas are usually set 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 adapts 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 the interlock control between the main fan and the air curtain fan, improve the performance of the range hood, reduce the complexity and equipment cost of the range hood, and solve the problem of low accuracy of state detection caused by the unstable state of the main fan in the initial stage of startup.

[0005] 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 includes: obtaining the actual operating state of the main fan; obtaining the control information of the air curtain fan based on the actual operating state 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 an opening instruction, controlling the main fan and the air curtain fan to work; in response to the main fan entering a balanced state, performing the step of obtaining the actual operating state of the main fan; wherein, in the balanced state, the rotational speed of the main fan matches the duct pressure of the range hood.

[0006] In some embodiments, the determining the control information of the air curtain fan based on the actual operating state of the main fan includes: obtaining, 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 as the control information of the air curtain fan.

[0007] In some embodiments, the operating states of the main fan include at least a first low-speed state and a first high-speed state, the operating states of the air curtain fan include 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 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; and 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; and using the second control information to control the air curtain fan to operate in the second high-speed state.

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

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

[0010] In some embodiments, in response to an activation 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 smoke machine. The smoke machine 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 main fan and the air curtain fan to operate using the above control method.

[0013] 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: First, the actual operating state of the main fan of the range hood is obtained, and based on the actual operating state of the main fan, the control information of the air curtain fan is obtained, and the control information is used to control the actual operating state of the air curtain fan. Among them, 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 the balanced state, performing the step of obtaining the actual operating state of the main fan; among them, in the balanced state, the rotational speed of the main fan matches the duct 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, can realize the interlock control between the main fan and the air curtain fan, make the actual motion states of the two more matched, and thus is beneficial 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 be additionally provided with a monitoring device, so the complexity and equipment cost of the range hood are lower. Further, obtaining the actual operating state of the main fan after the main fan enters the balanced state can improve the problem of low state detection accuracy caused by the unstable state of the main fan in the initial stage of startup. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings, where:

[0016] Figure 1 is a schematic structural diagram of an embodiment of the range hood of the present application;

[0017] Figure 2 is a schematic flowchart of an embodiment of the control method of the range hood of the present application;

[0018] Figure 3 is a schematic flowchart of another embodiment of the control method of the range hood of the present application;

[0019] Figure 4 is a schematic flowchart of still another embodiment of the control method of the range hood of the present application;

[0020] Figure 5 is a schematic structural diagram of an embodiment of the computer-readable storage medium of the present application;

[0021] Figure 6 is a schematic structural diagram of another embodiment of the range hood of the present application;

[0022] Figure 7 is Figure 6 the exploded view of the shown embodiment;

[0023] Figure 8 is Figure 7 a schematic cross-sectional structure diagram of the air outlet channel in the illustrated embodiment;

[0024] Figure 9 is a schematic structural diagram of another embodiment of the range hood of the present application;

[0025] Figure 10 is a schematic structural diagram of still another embodiment of the range hood of the present application;

[0026] Figure 11 is a schematic structural diagram of an embodiment of the smoke inlet plate of the range hood of the present application;

[0027] Figure 12 is Figure 11 a schematic diagram of the flow of condensate oil on the smoke inlet plate in the illustrated embodiment. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0029] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present application, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0030] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0031] The present application first proposes a range hood, as Figure 1 shown Figure 1It is a schematic structural diagram of an embodiment of the range hood of the present application. The range hood (not labeled in the figure) in this embodiment 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 in 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 smoke suction component of the range hood, and its operating state can be adjusted according to at least one of the operating state of the range hood, the operating state of the cooking appliance, the environmental state, etc. The air curtain fan 13 is used to form an air curtain airflow, mainly to separate the oil fume escaping towards the user side from the user. Among them, the controller 14 controls the operation of the main fan 12 and the air curtain fan 13 by using the control method of the range hood in the following embodiment, which can realize the interlocking control between the main fan 12 and the air curtain fan 13, make the actual motion states between the two more matched, and thus is beneficial to improving the performance of the range hood. And compared with the air curtain control of the existing range hood, the range hood in 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.

[0032] Among them, the controller 14 can be a micro control unit, other control chips or non-integrated circuits.

[0033] In some embodiments, as Figure 2 shown, Figure 2 It is a schematic flow diagram of an embodiment of the control method of the range hood of the present application. The control method in this embodiment includes steps S21 to S23.

[0034] Step S21: Obtain the actual operating state of the main fan.

[0035] The operating state of the main fan can include the rotational speed or the working mode, etc. The working mode is, for example, a low rotational speed mode, a high rotational speed mode, etc.

[0036] The controller can determine the actual operating state of the main fan based on electrical signals such as the actual drive current of the main fan, or the controller can also obtain the actual rotational speed of the main fan based on components such as an encoder, or the controller can also determine the actual working mode based on the actual rotational speed, etc.

[0037] Step S22: Obtain the control information of the air curtain fan based on the actual operating state of the main fan.

[0038] The mapping relationship between the motion state of the main fan and the control information of the air curtain fan can be pre-stored in the controller; the mapping relationship can be the specific corresponding relationship 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 a table; the mapping relationship can be the functional relationship between the rotational speed or working mode and the control information, etc. The controller calculates the control information corresponding to the actual operating state of the main fan as the control information of the air curtain fan using the functional relationship.

[0039] The control information of the air curtain fan can be the control parameters or performance parameters of the air curtain fan, such as electrical signals like rotational speed, drive voltage, etc.; the control information can also be a control strategy, such as an adjustment strategy for rotational speed or drive voltage, etc.

[0040] In some embodiments, the implementation 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 preset relationship between the operating state of the main fan and the control information of the air curtain fan is pre-stored in the controller. After the controller obtains the actual operating state of the main fan, it can directly obtain the control information of the air curtain fan corresponding to the actual operating state of the main fan through this 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 tobacco machine. Among them, the preset relationship can be the corresponding relationship of specific states and parameters, or a functional relationship, etc.

[0041] Step S23: Control the actual operating state of the air curtain fan using the control information.

[0042] The controller controls the air curtain fan to work using the control information to adjust the actual operating state of the air curtain fan.

[0043] This embodiment can control the actual operating state of the air curtain fan based on the actual operating state of the main fan, can realize the linkage control between the main fan and the air curtain fan, making the actual motion states between the two more matching, thus being beneficial to improving the performance of the tobacco machine. And compared with the air curtain control of existing tobacco machines, the tobacco machine in this embodiment does not need to be additionally provided with a monitoring device, so the complexity and equipment cost of the tobacco machine are relatively low.

[0044] In some embodiments, the control information includes voltage information. The implementation method for controlling the actual operating state of the air curtain fan using the control information includes: controlling the drive voltage of the air curtain fan using the voltage information to adjust the rotational 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, enabling the controller to control the drive voltage of the air curtain fan faster and more accurately.

[0045] Of course, in some embodiments, the control information may also be the rotational speed or the like. The controller first converts the rotational speed into voltage information and then uses the voltage information to control the drive 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 drive voltage of the air curtain fan according to the magnitude relationship between the rotational speed and the actual rotational speed, so as to adjust the actual rotational speed of the air curtain fan.

[0046] In some embodiments, the operating states of the main fan at least include a first low-speed state and a first high-speed state, the operating states of the air curtain fan at least include 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 for 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 for 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 the second low-speed state; using the second control information to control the air curtain fan to operate in the second high-speed state.

[0047] When the controller determines that the actual operating state of the main fan is the first low-speed state, it obtains the first control information associated with the first low-speed state and uses the first control information to control the air curtain fan to operate in the second low-speed state; when the controller determines that the actual operating state of the main fan is the first high-speed state, it obtains the second control information associated with the first high-speed state and uses the second control information to control the air curtain fan to operate in the second high-speed state.

[0048] When the rotational speed of the main fan is relatively low, the duct pressure of the smoke machine is relatively small. The main fan can achieve a good smoking effect, and there is less need for the air curtain fan. Moreover, the noise generated by the main fan is small at this time. Therefore, the air curtain fan can be controlled to operate at a low speed, that is, the drive voltage can be relatively small, so as to avoid excessive noise of the air curtain fan from increasing the overall noise of the smoke machine and can also save energy.

[0049] When the rotational speed of the main fan is relatively high, the duct pressure of the smoke machine is relatively large. The main fan needs the cooperation of the air curtain fan to improve the smoking effect. Moreover, the noise generated by the main fan is large at this time. Therefore, the rotational speed of the air curtain fan can be increased, that is, the voltage can be relatively large; and because the noise generated by the main fan is large, the noise of the air curtain fan will not deteriorate the overall noise problem of the smoke machine.

[0050] In some embodiments, the operating states of the main fan can be divided into more operating states, and the actual operating state of the air curtain fan is controlled for different operating states to improve the fineness of the interlock control, thereby improving the overall performance of the smoke machine, such as improving the smoking effect, reducing noise, saving power consumption, etc.

[0051] In some embodiments, the rotational speed of the main fan is positively correlated with the rotational speed of the air curtain fan. This positive correlation can be represented by a rotational speed - rotational speed curve relationship, a drive current - drive voltage curve relationship, a rotational speed - drive voltage curve relationship, etc., as the above-mentioned preset relationship.

[0052] 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.

[0053] In some embodiments, as Figure 3 shown, Figure 3 is a schematic flowchart 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.

[0054] Step S31: In response to the start instruction, control the main fan and the air curtain fan to work.

[0055] The controller receives the start instruction of the range hood and controls the main fan and the air curtain fan to enter the working state.

[0056] Among them, 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 the user selection instruction, the current working state of the range hood, the current working state of the cooking stove, the current environmental state, etc. While controlling the main fan to enter the working state, the controller also controls the air curtain fan to enter the working state to form an air curtain airflow, separating the oil fume escaping towards the user side from the user and improving the smoking effect.

[0057] In some embodiments, the controller controls the main fan to operate in a target operating state and controls the air curtain fan to operate at a low rotational speed state. When the range hood is started, 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 consumption and reduce noise. Among them, the low rotational speed state refers to the lowest speed state that can enable the air curtain fan to form an air curtain airflow.

[0058] Step S32: In response to the main fan entering the balanced state, obtain the actual operating state of the main fan; among them, in the balanced state, the rotational speed of the main fan matches the duct pressure of the range hood.

[0059] After the range hood is turned on, the range hood will automatically adjust to a certain operating condition and operate stably according to the duct 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 and the exhaust duct resistance increases, the main fan will increase the rotational speed again to overcome the resistance and ensure a certain exhaust volume; when the duct pressure is low, the main fan only needs to operate at a low rotational speed to ensure the required air volume.

[0060] The controller stores multiple target operating states of the main fan, that is, multiple balanced states. In each balanced state, there is a preset relationship between the rotational speed of the main fan and the pipeline pressure of the smoke machine. If the actual rotational speed and pipeline pressure of the main fan satisfy the corresponding preset relationship, that is, they match, when the main fan is in the target operating state, it is considered that the main fan enters the balanced state. After the main fan enters the balanced state, the controller obtains the actual operating state of the main fan to improve the problem of low detection accuracy caused by the unstable state of the main fan in the initial startup stage.

[0061] Step S33: Obtain the control information of the air curtain fan based on the actual operating state of the main fan.

[0062] For the specific implementation manner of step S33, reference can be made to the above step S22.

[0063] Step S34: Use the control information to control the actual operating state of the air curtain fan.

[0064] For the specific implementation manner of step S34, reference can be made to the above step S23.

[0065] This embodiment can control the actual operating state of the air curtain fan based on the actual operating state of the main fan, can realize the interlock control between the main fan and the air curtain fan, make the actual motion states between the two more matched, and thus is beneficial to improving the performance of the smoke machine. And compared with the air curtain control of the existing smoke machine, the smoke machine of this embodiment does not need to be additionally provided with a monitoring device, so the complexity and equipment cost of the smoke machine are lower.

[0066] Furthermore, after the main fan enters the balanced state, the controller obtains the actual operating state of the main fan to improve the problem of low detection accuracy caused by the unstable state of the main fan in the initial startup stage. Therefore, this embodiment can improve the accuracy of air curtain control and enhance the performance of the smoke machine.

[0067] In some embodiments, the control method of the smoke machine may further include: adjusting the actual operating state of the main fan based on the environmental information, and the controller continues to control the air curtain fan to work based on the actual operating state of the main fan by using the above control method, so that the operating states of the main fan and the air curtain fan match the cooking environment and improve the smoking effect, etc.

[0068] In some embodiments, such as Figure 4 shown Figure 4It is a schematic flowchart of another embodiment of the control method of the range hood in this application. In this embodiment, when the range hood is turned on, the main fan and the air curtain fan are turned on simultaneously, and the air curtain fan operates at a low speed (low voltage); then, according to the pipeline conditions of the range hood, the controller automatically adjusts the speed of the main fan to a balanced state for stable operation; then, the controller automatically adjusts the drive voltage of the air curtain fan according to the operating state of the main fan to adjust the operating state of the air curtain fan; after that, the whole range hood operates stably in the new state.

[0069] This application first obtains the actual operating state of the main fan of the range hood, and based on the actual operating state of the main fan, obtains a control information of the air curtain fan, and uses the control information to control the actual operating state of the air curtain fan. In this way, this application can control the actual operating state of the air curtain fan based on the actual operating state of the main fan, can realize the linkage control between the main fan and the air curtain fan, make the actual motion states between the two more matched, and thus is beneficial to improving the performance of the range hood. And compared with the air curtain control of the existing range hoods, the range hood of this application does not need to be additionally provided with a monitoring device, so the complexity and equipment cost of the range hood are relatively low.

[0070] This application proposes a control strategy for the linkage problem between the air curtain component and the whole range hood. This control strategy does not need to be additionally provided with environmental monitoring devices such as temperature and gas. It only needs to write the association relationship between the operating state of the main fan and the control information of the air curtain fan, such as the drive voltage, into the controller of the range hood. When the whole machine operates, the drive voltage of the air curtain fan is adjusted accordingly through the actual operating state of the main fan to control the operating state of the air curtain fan.

[0071] This application further proposes a range hood, as Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 shown. The range hood of this embodiment includes a range hood body (not marked in the figure), a main fan 12, an air curtain fan 13 and a controller 14. The controller 14 controls the main fan 12 and the air curtain fan 13 to work at least by using the above method. 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 communicated with the first cavity 110; a main fan 12 is arranged in the second cavity 120. Thus, the range hood generates a negative pressure in the range hood cavity through the main fan 12 and adsorbs cooking fumes through the smoke inlet hole 1111. The range hood is provided with an oil net 1112 at the smoke inlet hole 1111.

[0072] 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 installed on the wall, the first back plate 122 is disposed close to the wall, and the main fan 12 is disposed within the frame 123; the main air inlet 1211 of the main fan 12 faces the first back plate 122, and a certain distance is provided 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 of the gas flow between the main air inlet 1211 and the smoke inlet hole 1111 is smaller, the path is shorter, and the smoke suction ability of the range hood is stronger.

[0073] The air curtain device 115 includes an air curtain fan 13 and an air outlet passage 1152. The air curtain fan 13 includes a second air inlet 11511 and a second air outlet. The air outlet passage 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 communicated with 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 air flow blown out from the first air outlet 11522 faces the smoke inlet hole 1111. Thus, the rising and about-to-leak cooking fumes can be timely carried by the air curtain air flow blown out by the air curtain device 115 to the smoke inlet hole 1111 and then sucked away and discharged by the range hood, thereby avoiding the leakage of cooking fumes and improving the smoke suction effect.

[0074] The range hood includes two air curtain devices 115, which are respectively disposed on the front side of the range hood along the horizontal direction.

[0075] In some embodiments, as Figure 6 、 Figure 7 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 disposed 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 an air curtain cavity, and the air curtain device 115 is disposed in the air curtain cavity. The air curtain device 115 is disposed at the top of the first cavity 110 and on the smoke inlet side of the smoke inlet plate 111. A plurality of air inlet holes 1131 are provided at the position of the first top plate 113 corresponding to the second air inlet 11511.

[0076] As Figure 8As shown, the air outlet passage 1152 includes a top cover 11523 and a bottom cover 11524. The top cover 11523 is disposed on the side of the air outlet passage 1152 away from the smoke inlet hole 1111, and the bottom cover 11524 is disposed on the side of the air outlet passage 1152 close to the smoke inlet hole 1111. The top cover 11523 and the bottom cover 11524 form an air cavity of the air outlet passage 1152. In some embodiments, to make the air curtain airflow more smooth in the air outlet passage 1152, the structures of the top cover 11523 and the bottom cover 11524 near the first air outlet 11522 are set to be arc-shaped. Among them, the range of the first included angle θ between the first arc tangent line a of the top cover 11523 at the first air outlet 11522 and the horizontal direction is 0 - 70°, and the range of the second included angle β between the second arc tangent line b of the bottom cover 11524 at the first air outlet 11522 and the horizontal direction is 0 - 45°. Further, in some embodiments, the range of the third included angle α between the first arc tangent line a and the second arc tangent line b is 0 - 20°. Thereby, it can be ensured that the air curtain airflow ejected from the first air outlet 11522 of the air curtain device 115 is directed towards the smoke inlet hole 1111, so as to timely carry the rising oil fume to the smoke inlet hole 1111, and at the same time prevent the air curtain airflow ejected from the first air outlet 11522 from diffusing too much and affecting the ejection effect.

[0077] In some embodiments, to ensure the pressurization effect of the air outlet passage 1152 and the speed of the air curtain airflow ejected from the first air outlet 11522, the width of the air outlet passage 1152 gradually decreases in the direction from the first air inlet 11521 to the first air outlet 11522.

[0078] An air outlet hole is provided at the position of the second top plate 114 corresponding to the first air outlet 11522, so that the first air outlet 11522 is communicated with the outside of the range hood.

[0079] In some embodiments, further refer to Figure 9 , the difference from the above embodiments is that: a plurality of air inlet holes 21911 are provided on the first side plate 2191 of the first cavity 110. Thereby, the second air inlet 11511 (refer to the above embodiments) of the air curtain device 115 is communicated with the outside of the range hood, avoiding 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 ejection of the air curtain airflow by the air curtain device 115 and reducing the smoking efficiency of the range hood.

[0080] In some embodiments, to further increase the air intake of the air curtain device 115, the total area of a plurality of air intake holes 21911 is set to be greater than 0.5 times the area of the second air intake 11511 of the air curtain fan 13. To prevent the air intake holes 21911 from being blocked by the air curtain fan 13 and at the same time reduce the resistance of the air curtain fan 13 to suck 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. To avoid the second air intake 11511 of the air curtain fan 13 being blocked by the first top plate 113, the distance between the second air intake 11511 and the first top plate 113 is set to be 6 - 10 mm.

[0081] In some embodiments, with further reference to Figure 10 , the decorative cover 160 (as shown in the above embodiments) is arranged around the sides of the front cover plate 124 and the frame 123, and there is a certain distance 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. A part of the air curtain device 115 is arranged outside the side wall on the same side as the second cavity 120 and the air intake hole 1111 faces. Thus, the air curtain device 115 can intake air from the top of the range hood, that is, there is no need to set an air intake corresponding to the air curtain device 115 on the outer surface of the range hood, which can improve the aesthetics of the range hood. Further, a part of the air curtain device 115 is 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 and further reducing the volume of the range hood.

[0082] The air curtain device 115 intakes air from the top of the decorative cover 160 and the second cavity 120 of the range hood; the second air intake 11511 (as shown in the above embodiments) of the air curtain fan 13 faces the decorative cover 160.

[0083] In some embodiments, as Figure 11 and Figure 12 shown, the smoke intake plate 111 includes two first air inlet plates 1101 and second air inlet plates 1102 arranged adjacent to each other along the first direction X. The first air inlet plates 1101 and the second air inlet plates 1102 include proximal edges close to each other and distal edges far from each other. The proximal edges are close to the middle of the smoke intake plate 111 in the first direction X, and the distal edges are close to both ends of the smoke intake plate 111 in the first direction X. The proximal edges of the first air inlet plates 1101 and the second air inlet plates 1102 are interconnected by a connecting plate 1103. The connecting plate 1103 protrudes forward compared with the distal edges of the first air inlet plates 1101 and the second air inlet plates 1102 respectively. The first air inlet plates 1101 and the second air inlet plates 1102 are in an inclined state from the proximal edge to the distal edge, that is, the distal edges of the first air inlet plates 1101 and the second air inlet plates 1102 are inclined backward.

[0084] In some embodiments, a first air inlet and a second air inlet are respectively formed on the first air outlet plate 1101 and the second air outlet plate 1102. That is, the above-mentioned smoke inlet holes 1111 include the first air inlet and the second air inlet, and the opening areas of the first air inlet and the second air inlet gradually decrease along the direction from the proximal edge to the distal edge. According to the principle of aerodynamics, when the cooking fume passes through the distal edges of the first air inlet and the second air inlet, due to the small opening area, the flow rate of the cooking fume can be increased, thereby improving the suction efficiency on both sides of the range hood.

[0085] In some embodiments, the overall appearance of the smoke inlet plate 111 presents an M shape with the middle protruding outward and both sides concave inward in the first direction X. The middle of the smoke inlet plate 111 protrudes outward. Since the proximal edges of the first air inlet and the second air inlet are relatively close to the main fan and also relatively close to the cooking stove, the path that the cooking fume passes through before entering the main fan is short, and the expansion of the negative pressure area can be achieved at a lower cost.

[0086] The upper plate 1105 slopes downward along the direction from the proximal edge to the distal edge, approximately presenting an inclined triangle. On the contrary, the lower plate 1106 slopes downward along the direction from the distal edge to the proximal edge, approximately presenting an inclined triangle. The convex design in the middle makes the areas of the two inclined surfaces of the upper plate 1105 and the lower plate 1106 relatively reduced, which can effectively reduce the contact area of the cooking fume on the upper plate 1105 and the lower plate 1106. The smaller formation area of the 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 at the bottom of the smoke inlet plate 111 under the guiding action 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 at the bottom of the smoke inlet plate 111 and flow down to the oil cup, which helps the collection and cleaning of the condensed oil.

[0087] 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 intake area of the first air inlet and the second air inlet close to the middle of the smoke inlet plate 111, since the middle air inlet is closer to the main fan and the cooking stove, the cooking fume released from the double stoves can be captured more directly and quickly, and the smoking effect is good.

[0088] In some embodiments, oil screens 1112 with contours matching those at the first air inlet and the second air inlet are provided, which can ensure that the oil screens 1112 fit tightly against the first air inlet and the second air inlet after installation to prevent oil fume leakage. To further improve the smoking effect, the mesh holes of the oil screen 1112 are designed with irregular aperture sizes, and the opening area of the mesh holes near the distal edge is larger than that of the mesh holes near the proximal edge. The larger opening area of the mesh holes at the distal edge of the smoke inlet plate 111 is conducive to the flow of flue gas, reduces resistance, and enables the oil fume to pass through the oil screen faster. The smaller opening area of the mesh holes at the proximal edge of the smoke inlet plate 111 can better intercept grease particles, prevent them from entering the internal main fan, etc., and reduce the cleaning and maintenance costs.

[0089] The present application further provides a computer-readable storage medium, such as Figure 5 shown Figure 5 is a schematic structural diagram of an embodiment of the computer-readable storage medium of the present application. The computer-readable storage medium 50 of the embodiment of the present application stores program instructions 51 internally, and the program instructions 51 are executed by a processor to implement the above control method of the range hood.

[0090] Among them, the program instructions 51 can form a program file and be stored in the above storage medium in the form of a software product, so that an electronic device (which can be a personal computer, a server, or a network device, etc.) or a processor can execute all or part of the steps of the methods in various embodiments of the present application. The foregoing storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs, or terminal devices such as computers, servers, mobile phones, and tablets.

[0091] The computer-readable storage medium 50 of this embodiment can be, but is not limited to, USB flash drives, SD cards, PD optical drives, mobile hard disks, large-capacity floppy drives, flash memories, multimedia memory cards, servers, etc.

[0092] In one embodiment, a computer program product or a computer program is provided. The computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the electronic device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the electronic device executes the steps in the above method embodiments.

[0093] 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, and the program data can be executed to implement the methods of the above embodiments. The storage device can be a USB flash drive, an optical disc, a server, etc. That is to say, the present application can be embodied in the form of a software product, which includes several instructions for causing an intelligent terminal to execute all or part of the steps of the methods described in the embodiments.

[0094] The above are only the implementation manners of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present application.

Claims

1. A range hood, characterized in that, The range hood includes: a range hood main body, a main blower, an air curtain device, and a controller. The air curtain device includes an air outlet duct and an air curtain blower; the range hood main body includes a first cavity and a second cavity. The first cavity includes a smoke inlet plate provided with a smoke inlet hole; the air curtain blower includes a second air inlet and a second air outlet, and the air outlet duct includes a first air inlet and a first air outlet. The second air inlet and the first air outlet are respectively communicated with the outside of the range hood, the second air outlet is directly connected to the first air inlet, and the first air outlet faces the smoke inlet hole; the main blower and the air curtain blower are electrically connected to the controller; Wherein, the smoke inlet plate includes a first air inlet plate and a second air inlet plate arranged adjacent to each other along the first direction X. Both the first air inlet plate and the second air inlet plate include a proximal edge close to each other and a distal edge away from each other. The proximal edge is close to the middle of the smoke inlet plate in the first direction X, and the distal edge is close to both ends of the smoke inlet plate in the first direction X. The proximal edge of the first air inlet plate and the proximal edge of the second air inlet plate are connected to each other through a connecting plate; the connecting plate protrudes forward compared with the distal edge of the first air inlet plate and the distal edge of the second air inlet plate respectively. The first air inlet plate and the second air inlet plate are inclined from their respective proximal edges to their respective distal edges; Wherein, a third air inlet and a fourth air inlet are respectively formed on the first air inlet plate and the second air inlet plate. The smoke inlet hole includes the third air inlet and the fourth air inlet. The opening areas of the third air inlet and the fourth air inlet gradually decrease along the direction from the corresponding proximal edge to the corresponding distal edge; Wherein, the controller is configured to obtain the actual operating state of the main blower, obtain the control information of the air curtain blower based on the actual operating state of the main blower, and use the control information to control the actual operating state of the air curtain blower; wherein, before obtaining the actual operating state of the main blower, the controller controls the main blower and the air curtain blower to operate in response to an opening instruction; the controller obtains the actual operating state of the main blower in response to the main blower entering a balanced state; wherein, in the balanced state, the rotation speed of the main blower matches the duct pressure of the range hood; Among them, the smoke inlet plate further includes two upper plates respectively arranged above the first air outlet plate and above the second air outlet plate. The upper plates are inclined downward in an inclined triangle shape along the direction from the corresponding proximal edge to the corresponding distal edge; the smoke inlet plate further includes two lower plates respectively arranged below the first air outlet plate and below the second air outlet plate. The lower plates are inclined downward in an inclined triangle shape along the direction from the corresponding distal edge to the corresponding proximal edge; the smoke inlet plate further includes two side plates respectively arranged at the distal edges of the first air outlet plate and the second air outlet plate; the condensate oil flows along the upper plates, the corresponding side plates, and the corresponding lower plates, and is guided to the middle position at the bottom of the smoke inlet plate. Among them, the air outlet channel includes a top cover and a bottom cover. The top cover is arranged on the side of the air outlet channel away from the smoke inlet hole, and the bottom cover is arranged on the side of the air outlet channel close to the smoke inlet hole. The top cover and the bottom cover form the air cavity of the air outlet channel; the range of the first included angle between the first arc tangent at the first air outlet of the top cover and the horizontal direction is 0-70°, and the range of the second included angle between the second arc tangent at the first air outlet of the bottom cover and the horizontal direction is 0-45°; the range of the third included angle between the first arc tangent and the second arc tangent is 0-20°.

2. The range hood according to claim 1, characterized in that, The controller obtains the control information corresponding to the actual operating state of the main fan as the control information of the air curtain fan based on the preset relationship between the operating state of the main fan and the control information of the air curtain fan.

3. The range hood according to claim 1, wherein, The operating state of the main fan at least includes a first low-speed state and a first high-speed state. The operating state of the air curtain fan at least includes a second low-speed state and a second high-speed state. The control information includes first control information and second control information. In response to the actual operating state of the main fan being the first low-speed state, the controller obtains the first control information; in response to the actual operating state of the main fan being the first high-speed state, the controller obtains the second control information; the controller controls the air curtain fan to operate in the second low-speed state by using the first control information, and controls the air curtain fan to operate in the second high-speed state by using the second control information.

4. The range hood 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 cigarette machine according to claim 2, characterized in that The control information includes voltage information, and the controller controls the drive voltage of the air curtain fan by using the voltage information to adjust the rotation speed of the air curtain fan.

6. The cigarette machine according to claim 1, characterized in that, The controller controls the main fan to operate in a target operating state and controls the air curtain fan to operate in a low-speed state.

7. The smoke machine according to any one of claims 1 to 6, characterized in that, The controller also adjusts the actual operating state of the main fan based on the environmental information.

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