An oil fume suction machine and a control method

Abstract

The present invention provides an oil fume extractor and a control method. The oil fume extractor includes a smoke collecting hood, a first detector and a controller: the smoke collecting hood is formed with a smoke inlet, and the smoke inlet is divided into a plurality of smoke inlet areas; a smoke guiding plate group is arranged in each smoke inlet area, and each smoke guiding plate group includes a plurality of synchronously rotatable smoke guiding plates; the smoke guiding plates of each smoke guiding plate group have a plurality of working positions; a cooking appliance is arranged below the smoke collecting hood, the cooking appliance includes a plurality of burners, and the plurality of burners have a plurality of opening and closing states; the first detector is used for detecting the opening and closing states of the plurality of burners and transmitting the detection data to the controller; the controller is used for enabling the smoke guiding plates corresponding to the respective smoke guiding plate groups to be in corresponding working positions according to the opening and closing states of the plurality of burners; controlling the smoke guiding plates corresponding to the respective smoke guiding plate groups to rotate to target working positions; enabling the smoke guiding plates to form a larger smoke gathering range, improving the oil fume extraction efficiency; avoiding the waste of air volume during oil fume extraction, reducing the escape of oil fume, and greatly improving the air quality in the kitchen.

Description

Technical Field

[0001] The present invention belongs to the technical field of kitchen appliances, and particularly relates to a range hood and a control method thereof. Background Art

[0002] A range hood is an electrical appliance used in a household kitchen to suck out fumes generated during cooking. Also known as a kitchen extractor or range hood, it is a kitchen appliance that purifies the kitchen environment. Installed above the kitchen stove, it can quickly suck away the waste generated by the burning of the stove head and the harmful fumes generated during the cooking process, discharge them outdoors, and reduce air pollution. In existing range hoods, the structural design is unreasonable, the smoking direction of the air inlet is fixed, and it cannot adjust the smoking direction according to the positions of the range hood and the stove and the opening state of the stove head, resulting in a large waste of the air volume of the range hood; during the cooking process, the fumes are likely to escape in all directions when they explode and rise, resulting in poor fume suction effect and low efficiency. Summary of the Invention

[0003] In view of this, the present invention provides a range hood and a control method thereof to solve the problems in the prior art that the suction direction of the air inlet is fixed, resulting in the mismatch between the suction direction of the range hood and the opening and closing states of multiple stove heads, poor fume suction effect, and fume escape.

[0004] The present invention provides a range hood, comprising:

[0005] A smoke collecting hood, which is formed with an air inlet. The air inlet is divided into multiple air inlet areas along the length direction of the smoke collecting hood. Each air inlet area is provided with a smoke guiding plate group. Each smoke guiding plate group includes a rotatable smoke guiding plate or multiple synchronously rotatable smoke guiding plates; the smoke guiding plates of each smoke guiding plate group have multiple working positions, and different working positions correspond to different inclination angles; a stove is arranged below the smoke collecting hood, and the stove includes multiple stove heads, and each stove head can be independently controlled to be opened or closed; the multiple stove heads have multiple opening and closing states;

[0006] A first detector and a controller, the first detector is electrically connected to the controller; the first detector is used to detect the opening and closing states of the multiple stove heads and transmit the detection data to the controller; the controller is used to make the smoke guiding plates corresponding to each smoke guiding plate group be in the corresponding working positions according to the opening and closing states of the multiple stove heads.

[0007] Further optionally, the multiple stove heads include a first stove head and a second stove head, and the multiple opening and closing states include only the first stove head is opened, only the second stove head is opened, and both stove heads are opened.

[0008] Further optionally, the first detection component is a temperature sensor and is arranged on the side of the smoke collecting hood close to the cooking appliance; the first detection component is used for detecting the temperatures of the first burner and the second burner, and further the controller can determine the opening and closing states of the two burners.

[0009] Further optionally, the plurality of smoke inlet areas include a first smoke inlet area and a second smoke inlet area; the smoke guiding plate group includes a first smoke guiding plate group and a second smoke guiding plate group, the first smoke guiding plate group includes a plurality of first smoke guiding plates, and the plurality of first smoke guiding plates include a first working position and a second working position; the second smoke guiding plate group includes a plurality of second smoke guiding plates, and the plurality of second smoke guiding plates include a third working position and a fourth working position;

[0010] When only the first burner is opened, correspondingly, the plurality of first smoke guiding plates are in the first working position and the plurality of second smoke guiding plates are in the third working position;

[0011] When only the second burner is opened, correspondingly, the plurality of first smoke guiding plates are in the second working position and the plurality of second smoke guiding plates are in the fourth working position;

[0012] When both burners are opened, correspondingly, the plurality of first smoke guiding plates are in the first working position and the plurality of second smoke guiding plates are in the fourth working position.

[0013] Further optionally, the smoke collecting hood further includes two support plates, the two support plates are oppositely arranged on both sides of the smoke inlet along the width direction of the smoke collecting hood, and the two support plates are in an inverted isosceles triangle structure; the first smoke guiding plate and the second smoke guiding plate are rotatably arranged between the two support plates, and the initial inclination angles θ of the first smoke guiding plate and the second smoke guiding plate are both the base angles of the isosceles triangle.

[0014] Further optionally, the range hood further includes a second detection component electrically connected to the controller, the second detection component is arranged on the side of the smoke collecting hood close to the cooking appliance, and is used for detecting the position parameters of the smoke collecting hood and the cooking appliance; the controller is used for determining the inclination angles corresponding to the first working position, the second working position, the third working position and the fourth working position respectively according to the position parameters of the smoke collecting hood and the cooking appliance and the initial inclination angle θ.

[0015] Further optionally, the position parameters of the smoke collecting hood and the cooking appliance include the vertical distance h between the second detection component and the top surface of the cooking appliance, the straight-line distance l between the second detection component and the top of the first burner, and the horizontal distance s between the second detection component and the bottom of the support plate;

[0016] The second detection member is rotatably arranged on the smoke collecting hood, and the second detection member has a first preset position, a second preset position and a third preset position; when the second detection member is in the first preset position, the vertical distance h between the second detection member and the top surface of the cooking appliance can be detected; when the second detection member is in the second preset position, the straight-line distance l between the second detection member and the top of the first burner can be detected; when the second detection member is in the third preset position, the horizontal distance s between the second detection member and the bottom of the support plate can be detected.

[0017] The present invention also provides a control method for the range hood according to any one of the above, including:

[0018] When the cooking appliance is started, determine the opening and closing states of the plurality of burners;

[0019] According to the opening and closing states of the plurality of burners, determine the target working positions of the baffle plates corresponding to the respective baffle plate groups;

[0020] Control the baffle plates corresponding to the respective baffle plate groups to rotate to the target working positions.

[0021] Further optionally, the determining the opening and closing states of the plurality of burners includes:

[0022] Obtain the temperatures of the first burner and the second burner;

[0023] Compare the temperature of the first burner and the temperature of the second burner with a preset temperature respectively;

[0024] When the temperature of the first burner is greater than or equal to the preset temperature and the temperature of the second burner is less than the preset temperature, determine that only the first burner is open;

[0025] When the temperature of the first burner is less than the preset temperature and the temperature of the second burner is greater than or equal to the preset temperature, determine that only the second burner is open;

[0026] When the temperature of the first burner is greater than or equal to the preset temperature and the temperature of the second burner is greater than or equal to the preset temperature, determine that both burners are open.

[0027] Further optionally, the determining the target working positions of the baffle plates corresponding to the respective baffle plate groups according to the opening and closing states of the plurality of burners includes:

[0028] When only the first burner is open, determine that the target working position of the first baffle plate is the first working position and the target working position of the second baffle plate is the third working position;

[0029] When only the second burner is turned on, determine that the target working position of the first smoke guide plate is the second working position and the target working position of the second smoke guide plate is the fourth working position;

[0030] When both burners are turned on, determine that the target working position of the first smoke guide plate is the first working position and the target working position of the second smoke guide plate is the fourth working position.

[0031] Further optionally, the control method further includes:

[0032] Before the first use of the range hood, obtain the position parameters of the smoke collecting hood and the cooking appliance;

[0033] According to the position parameters of the smoke collecting hood and the cooking appliance and the initial tilting angles of the first smoke guide plate and the second smoke guide plate, determine the tilting angles corresponding to the first working position, the second working position, the third working position, and the fourth working position respectively.

[0034] Further optionally, the determining the tilting angles corresponding to the first working position, the second working position, the third working position, and the fourth working position respectively according to the position parameters of the smoke collecting hood and the cooking appliance and the initial tilting angles of the first smoke guide plate and the second smoke guide plate includes:

[0035] Calculate α according to h, l, and s as

[0036]

[0037] According to α and θ, determine that the tilting angle α1 corresponding to the first working position is 90° - α + θ, the tilting angle α1' corresponding to the second working position is 90° + α + θ, the tilting angle α2 corresponding to the third working position is α - θ, and the tilting angle α2' corresponding to the fourth working position is 90° + α - θ;

[0038] Wherein, h is the vertical distance between the top surface of the cooking appliance and the second detection member; l is the straight-line distance between the top of the first burner and the second detection member; s is the horizontal distance between the second detection member and the bottom of the support plate; θ is the initial tilting angles of the first smoke guide plate and the second smoke guide plate; α is the angle between the connection line between the top of the first burner and the bottom of the support plate and the vertical center line of the smoke collecting hood.

[0039] Further optionally, the second detection member is an infrared distance sensor; the obtaining the position parameters of the smoke collecting hood and the cooking appliance includes:

[0040] Control the second detection member to rotate so that the infrared light emitted by the second detection member is perpendicular to the top surface of the cooking appliance, then the second detection member is in the first preset position, and control the second detection member to measure h;

[0041] Control the rotation of the second detection member so that the infrared light emitted by the second detection member can reach the top of the first burner, then the second detection member is in the second preset position, and control the second detection member to measure l;

[0042] Control the rotation of the second detection member so that the infrared light emitted by the second detection member can reach the bottom of the support plate, then the second detection member is in the third preset position, and control the second detection member to measure s.

[0043] Compared with the prior art, the beneficial effects of the present invention are mainly as follows:

[0044] (1) Determine the target working positions of the smoke guide plates corresponding to the respective smoke guide plate groups according to the opening and closing states of multiple burners, and then control the smoke guide plates corresponding to the respective smoke guide plate groups to rotate to the target working positions; make the inclination angles of the smoke guide plates corresponding to the respective smoke guide plate groups match the opening and closing states of the multiple burners, so that the smoke guide plates form a larger smoke gathering range, improve the oil fume extraction efficiency; avoid waste of air volume during oil fume extraction, reduce the escape of oil fume, and greatly improve the air quality in the kitchen;

[0045] (2) According to the different positions and different types of the cooktops, the inclination angles of the smoke guide plates corresponding to the respective smoke guide plate groups can be adjusted, so that the same range hood can adapt to different opening states of the same cooktop and different types of cooktops, expanding the usage range of the range hood;

[0046] (3) When only the first burner is turned on, make the first smoke guide plate rotate to the inclination angle α1 corresponding to the first working position and make the second smoke guide plate rotate to the inclination angle α2 corresponding to the third working position; when only the second burner is turned on, make the first smoke guide plate rotate to the inclination angle α1' corresponding to the second working position and make the second smoke guide plate rotate to the inclination angle α2' corresponding to the fourth working position; when both burners are turned on, make the first smoke guide plate rotate to the inclination angle α1 corresponding to the first working position and make the second smoke guide plate rotate to the inclination angle α2' corresponding to the fourth working position; a larger smoke guiding range is formed between the first smoke guide plate and the second smoke guide plate, and the oil fume can quickly enter the smoke collecting hood under the action of the first smoke guide plate and the second smoke guide plate, having a good oil fume extraction effect; enable the range hood to meet different oil fume extraction requirements, make full use of the air volume for oil fume extraction during the operation of the range hood, improve the control accuracy of the smoke guide plates, and ensure the reliable operation of the range hood; enhance the user experience, and the user can make various selections according to actual needs;

[0047] (4) Detect the temperatures of the first burner and the second burner through the first detection component to determine the opening states of the first burner and the second burner, and further accurately control the tilting angles of the first smoke guide plate and the second smoke guide plate; detect the vertical distance between the second detection component and the top surface of the cooker, the straight-line distance between the second detection component and the top of the first burner, and the horizontal distance between the second detection component and the bottom of the support plate through the second detection component; when the second detection component is controlled to rotate to different positions, different distances can be measured, which expands the usage range of the second detection component and improves the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained based on the provided drawings.

[0049] The structures, ratios, sizes, etc. illustrated in this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limited conditions under which the present invention can be implemented. Therefore, they do not have a substantial technical meaning. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention.

[0050] Figure 1a and Figure 1b is a schematic structural diagram of an embodiment of an oil fume extractor provided by the present invention;

[0051] Figure 2a is a schematic assembly structural diagram of an embodiment of a support plate, a first smoke guide plate, and a second smoke guide plate provided by the present invention;

[0052] Figure 2b is a schematic assembly structural diagram of an embodiment of a first smoke guide plate and a first driving mechanism provided by the present invention;

[0053] Figure 2c is a schematic assembly structural diagram of an embodiment of a second smoke guide plate and a second driving mechanism provided by the present invention;

[0054] Figure 3 is a schematic assembly structural diagram of an embodiment of an infrared sensor, an infrared temperature sensor, and a third driving mechanism provided by the present invention;

[0055] Figure 4a is a schematic curve diagram of an embodiment of the rotation angle of an infrared temperature sensor and the temperature of a first burner when the first burner is opened provided by the present invention;

[0056] Figure 4b The embodiment curve diagram of the rotation angle of the infrared temperature sensor and the temperature of the second burner when the second burner provided by the present invention is turned on;

[0057] Figure 4c The embodiment curve diagram of the rotation angle of the infrared temperature sensor and the temperatures of the first burner and the second burner when the two burners provided by the present invention are turned on simultaneously;

[0058] Figure 5 The schematic flow diagram of the control method of the range hood provided by the present invention;

[0059] In the figure:

[0060] 11 - Smoke collecting hood; 111 - Smoke inlet; 12 - Smoke guiding plate; 121 - First smoke guiding plate; 122 - Second smoke guiding plate; 13 - Housing; 14 - Bracket plate; 141 - Through hole; 151 - First driving mechanism; 152 - Second driving mechanism; 153 - Third driving mechanism; 161 - First detecting member; 162 - Second detecting member;

[0061] 2 - Cooker; 21 - First burner; 22 - Second burner. Detailed implementation manners

[0062] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0063] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms of "a", "the" and "said" used in the embodiments of the present invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "Plural" generally includes at least two, but does not exclude the case of including at least one.

[0064] It should be understood that the term " / and" used herein is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0065] It should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a commodity or system comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such commodity or system. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the commodity or system comprising said element.

[0066] In existing range hoods, the structural design is unreasonable. The smoking direction of the air inlet is fixed and cannot be adjusted according to the positions of the range hood and the cooking stove and the opening state of the stove heads, and a large smoke-gathering range cannot be formed. During the cooking process, when the oil fume explodes and rises, it is easy to escape in all directions, resulting in poor oil fume extraction effect and low efficiency.

[0067] The present invention provides a range hood, comprising:

[0068] A smoke collecting hood, which is formed with an air inlet. The air inlet is divided into a plurality of air inlet areas along the length direction of the smoke collecting hood. Each air inlet area is provided with a set of smoke guiding plates. Each set of smoke guiding plates includes a rotatable smoke guiding plate or a plurality of synchronously rotatable smoke guiding plates; the smoke guiding plates of each set of smoke guiding plates have a plurality of working positions, and different working positions correspond to different inclination angles; a cooking stove is arranged below the smoke collecting hood. The cooking stove includes a plurality of stove heads, and each stove head can be independently controlled to be opened or closed; the plurality of stove heads have a plurality of opening and closing states;

[0069] A first detecting member and a controller, the first detecting member is electrically connected to the controller; the first detecting member is used for detecting the opening and closing states of the plurality of stove heads and transmitting the detection data to the controller; the controller is used for making the smoke guiding plates corresponding to each set of smoke guiding plates be in corresponding working positions according to the opening and closing states of the plurality of stove heads;

[0070] Controlling the smoke guiding plates corresponding to each set of smoke guiding plates to rotate to the target working positions; making the inclination angles of the smoke guiding plates corresponding to each set of smoke guiding plates adapt to the opening and closing states of the plurality of stove heads, so that the smoke guiding plates form a large smoke-gathering range, improving the oil fume extraction efficiency; avoiding waste of air volume during oil fume extraction, reducing the escape of oil fume, and greatly improving the air quality in the kitchen.

[0071] M222642CNI

[0072] <Range Hood>

[0073] Such as Figure 1a And Figure 1bAs shown in the figure, this embodiment provides a range hood, which includes a housing 13, a fan, and a smoke collecting hood 11: the housing 13 encloses a flue, and the fan is arranged in the flue; the smoke collecting hood 11 is arranged at the bottom of the housing 13 and forms a smoke collecting cavity, and the smoke collecting cavity is communicated with the flue; a smoke inlet 111 is formed at the bottom of the smoke collecting cavity. Under the action of the fan, indoor cooking fumes enter the smoke collecting cavity through the smoke inlet 111 and are then discharged to the outside through the flue; the smoke inlet 111 is divided into multiple smoke inlet areas along the length direction of the smoke collecting hood 11; a smoke guiding plate group is arranged in each smoke inlet area, and each smoke guiding plate group includes a rotatable smoke guiding plate 12 or multiple synchronously rotatable smoke guiding plates 12; the smoke guiding plate 12 of each smoke guiding plate group has multiple working positions, and different working positions correspond to different tilting angles; according to actual needs, the smoke guiding plate 12 of each smoke guiding plate group can be controlled to rotate to the corresponding tilting angle to achieve different smoke guiding effects and improve the cooking fume suction effect;

[0074] A cooking appliance 2 is arranged below the range hood. The cooking appliance 2 includes multiple burners, and each burner can be independently controlled to be opened or closed; when the cooking appliance 2 is started, the multiple burners include multiple different opening and closing states, and the multiple different opening and closing states include only one of the burners being opened, only another burner being opened, and multiple burners being opened simultaneously; when the multiple burners are in different opening and closing states, the emission amount and emission position of the cooking fumes are different, and thus the corresponding suction range of the cooking fumes is different;

[0075] The range hood further includes a first detector 161 and a controller. The first detector 161 is electrically connected to the controller; the first detector 161 is used to detect the opening and closing states of the multiple burners and transmit the detection data to the controller; the controller is used to make the smoke guiding plates 12 corresponding to the multiple smoke guiding plate groups be in the corresponding working positions according to the opening and closing states of the multiple burners; this can greatly improve the cooking fume suction effect of the range hood, avoid waste of the air volume of the range hood, and ensure the reliable operation of the range hood;

[0076] In summary, according to the different positions and different opening and closing states of the cooking appliance 2, the tilting angles of the smoke guiding plates 12 of each smoke guiding plate group can be adjusted, so that the same range hood can be adapted to different opening states of the same cooking appliance 2, and the same range hood can be adapted to different types of cooking appliances 2, expanding the usage range of the range hood.

[0077] Further, as shown in Figure 4a 、 Figure 4b and Figure 4c the multiple burners include a first burner 21 and a second burner 22, and the opening states of the multiple burners include only the first burner 21 being opened, only the second burner 22 being opened, and both burners being opened;

[0078] Specifically, the first detection member 161 is used to detect the temperatures of the first burner 21 and the second burner 22 and transmit them to the controller. The controller compares the temperatures of the first burner 21 and the second burner 22 with the preset temperatures respectively, and then determines the opening states of the first burner 21 and the second burner 22.

[0079] In view of the problem that the inclination angles of the smoke guide plates 12 in each smoke inlet area do not match the opening states of multiple burners, resulting in poor oil fume suction effect, in this embodiment, it is proposed that multiple smoke inlet areas include a first smoke inlet area and a second smoke inlet area; the smoke guide plate group includes a first smoke guide plate group and a second smoke guide plate group. The first smoke guide plate group includes multiple first smoke guide plates 121, and the multiple first smoke guide plates 121 are rotatably arranged in the first smoke inlet area; by controlling the first smoke guide plates 121 to rotate to different inclination angles, different smoke guiding effects can be formed by the first smoke guide plates 121; the multiple first smoke guide plates 121 include a first working position and a second working position; the second smoke guide plate group includes multiple second smoke guide plates 122, and the multiple second smoke guide plates 122 are rotatably arranged in the second smoke inlet area; by controlling the second smoke guide plates 122 to rotate to different inclination angles, different smoke guiding effects can be formed by the second smoke guide plates 122; the multiple second smoke guide plates 122 include a third working position and a fourth working position; the first smoke guide plates 121 and the second smoke guide plates 122 cooperate to form a smoke guiding area, which has a large wind gathering effect.

[0080] When only the first burner 21 is opened, correspondingly, the multiple first smoke guide plates 121 are in the first working position and the multiple second smoke guide plates 122 are in the third working position.

[0081] When only the second burner 22 is opened, correspondingly, the multiple first smoke guide plates 121 are in the second working position and the multiple second smoke guide plates 122 are in the fourth working position.

[0082] When both burners are opened, correspondingly, the multiple first smoke guide plates 121 are in the first working position and the multiple second smoke guide plates 122 are in the fourth working position.

[0083] As Figure 2a 、 Figure 2b and Figure 2c shown, further, the smoke collecting hood 11 further includes two support plates 14, and the two support plates 14 are oppositely arranged on both sides of the smoke inlet 111 along the width direction of the smoke collecting hood 11, and the two support plates 14 are in an inverted isosceles triangle structure; the first smoke guide plates 121 and the second smoke guide plates 122 are rotatably arranged between the two support plates 14; the initial inclination angles θ of the first smoke guide plates 121 and the second smoke guide plates 122 are both the base angles of the isosceles triangle; the vertical center line of the smoke collecting hood 11 coincides with the vertical center line of the cooking appliance 2; the projection of the first air inlet area on the cooking appliance 2 covers the first burner 21, and the projection of the second air inlet area on the cooking appliance 2 covers the second burner 22.

[0084] As shown Figure 3 in the figure, the range hood further includes a second detector 162 electrically connected to the controller. The second detector 162 is disposed on one side of the smoke collecting hood 11 close to the cooking appliance 2 for detecting the position parameters of the smoke collecting hood 11 and the cooking appliance 2. The controller is configured to determine the tilt angles corresponding to the first working position, the second working position, the third working position, and the fourth working position according to the position parameters of the smoke collecting hood 11 and the cooking appliance 2 and the initial tilt angle θ. Specifically, the second detector 162 is an infrared distance sensor and is close to the right side wall of the smoke collecting hood 11. The second detector 162 and the first detector 161 are integrated into an integral structure. The support plate 14 is used to set the smoke guide plate and also has a certain wind gathering effect. The support plate 14 forms a through hole 141, and the through hole 141 is a strip-shaped structure, and the cooking fume can enter the smoke collecting cavity through the through hole 141. The range hood further includes a first driving mechanism 151 and a second driving mechanism 152. The first driving mechanism 151 is disposed on the smoke collecting hood 11 and is drivingly connected to the first smoke guide plate 121, and can drive the first smoke guide plate 121 to rotate relative to the smoke collecting hood 11 to achieve different smoke guiding effects. The second driving mechanism 152 is disposed on the smoke collecting hood 11 and is drivingly connected to the second smoke guide plate 122, and can drive the second smoke guide plate 122 to rotate relative to the smoke collecting hood 11 to achieve different smoke guiding effects.

[0085] The position parameters of the smoke collecting hood 11 and the cooking appliance 2 include the vertical distance h between the second detector 162 and the top surface of the cooking appliance 2, the straight-line distance l between the second detector 162 and the top of the first burner 21, and the horizontal distance s between the second detector 162 and the bottom of the support plate 14.

[0086] The second detector 162 is rotatably disposed on the smoke collecting hood 11, and the second detector 162 has a first preset position, a second preset position, and a third preset position. When the second detector 162 is in the first preset position, it can detect the vertical distance h between the second detector 162 and the top surface of the cooking appliance 2. When the second detector 162 is in the second preset position, it can detect the straight-line distance l between the second detector 162 and the top of the first burner 21. When the second detector 162 is in the third preset position, it can detect the horizontal distance s between the second detector 162 and the bottom of the support plate 14.

[0087] <Control method>

[0088] As shown Figure 5 in the figure, the control method includes:

[0089] S1. When the cooking appliance 2 is started, determine the opening and closing states of multiple burners;

[0090] S2. Determine the target working positions of the smoke guide plates 12 corresponding to the respective smoke guide plate groups according to the opening and closing states of the multiple burners;

[0091] S3. Control the rotation of the smoke guide plates 12 corresponding to multiple groups of smoke guide plates to their target working positions.

[0092] Furthermore, S1 further includes:

[0093] S11. Obtain the temperatures of the first burner 21 and the second burner 22;

[0094] S12. Compare the temperatures of the first burner 21 and the second burner 22 with the preset temperature respectively;

[0095] S131. When the temperature of the first burner 21 is greater than or equal to the preset temperature and the temperature of the second burner 22 is less than the preset temperature, determine that only the first burner 21 is turned on;

[0096] S132. When the temperature of the first burner 21 is less than the preset temperature and the temperature of the second burner 22 is greater than or equal to the preset temperature, determine that only the second burner 22 is turned on;

[0097] S133. When the temperature of the first burner 21 is greater than or equal to the preset temperature and the temperature of the second burner 22 is greater than or equal to the preset temperature, determine that both burners are turned on.

[0098] Furthermore, S2 includes:

[0099] S21. When only the first burner 21 is turned on, determine that the target working position of the first smoke guide plate 121 is the first working position and the target working position of the second smoke guide plate 122 is the third working position;

[0100] S22. When only the second burner 22 is turned on, determine that the target working position of the first smoke guide plate 121 is the second working position and the target working position of the second smoke guide plate 122 is the fourth working position;

[0101] S23. When both burners are turned on, determine that the target working position of the first smoke guide plate 121 is the first working position and the target working position of the second smoke guide plate 122 is the fourth working position.

[0102] A larger smoke guiding range is formed between the first smoke guide plate 121 and the second smoke guide plate 122. The cooking fumes can quickly enter the smoke collecting hood 11 under the action of the first smoke guide plate 121 and the second smoke guide plate 122, having a better effect of sucking cooking fumes; enabling the range hood to meet different cooking fume suction requirements, making full use of the air volume for sucking cooking fumes during the operation of the range hood, improving the control accuracy of the smoke guide plates, and ensuring the reliable operation of the range hood; enhancing the user experience, and the user can make various selections according to actual needs.

[0103] In addition, the control method further includes:

[0104] S01. Before the range hood is used for the first time, obtain the position parameters of the smoke collecting hood 11 and the cooking stove 2;

[0105] S02. Determine the inclination angles of the first smoke guide plate 121 and the second smoke guide plate 122 according to the position parameters of the smoke collecting hood 11 and the cooking appliance 2, and determine the inclination angles corresponding to the first working position, the second working position, the third working position, and the fourth working position respectively.

[0106] S02 includes:

[0107] Calculate α according to h, l, and s as

[0108]

[0109] Determine α and θ, and determine the inclination angle corresponding to the first working position α1 = 90° - α + θ, the inclination angle corresponding to the third working position α2 = α - θ, the inclination angle corresponding to the second working position α1' = 90° + α + θ, and the inclination angle corresponding to the fourth working position α2' = 90° + α - θ.

[0110] The position parameters of the smoke collecting hood 11 and the cooking appliance 2 further include the horizontal distance x between the second detection member 162 and the top of the first burner 21, the horizontal distance y between the vertical center line of the smoke collecting hood 11 and the top of the first burner 21, and s = x + y; the included angle between the connection line between the second detection member 162 and the top of the first burner 21 and the top surface of the cooking appliance 2 is

[0111]

[0112] The included angle between the connection line between the second detection member 162 and the top of the first burner 21 and the center line of the smoke collecting hood 11 is β, and β + β0 = 90°.

[0113] The position parameters of the smoke collecting hood 11 and the cooking appliance 2 further include that the horizontal distance between the first burner 21 and the second burner 22 is t, and the straight-line distance m between the second detection member 162 and the top of the second burner 22. Then the horizontal distance between the second detection member 162 and the top of the second burner 22 is t + x; the included angle between the connection line between the second detection member 162 and the top of the second burner 22 and the top surface of the cooking appliance 2 is

[0114]

[0115] The included angle between the connection line between the second detection member 162 and the top of the second burner 22 and the center line of the smoke collecting hood 11 is γ, and γ + γ0 = 90°.

[0116] In view of the problem that multiple distances cannot be measured when the distance detection component is fixedly arranged, this embodiment proposes that the range hood further includes a third driving mechanism 153. The second detection component 162 is rotatably arranged on the smoke collecting hood 11 through the third driving mechanism 153 and is far away from the smoke inlet 111. The third driving mechanism 153 can be controlled to operate according to actual needs to rotate the second detection component 162 to different positions, so that different distances can be measured, the use range of the second detection component 162 is expanded, and the measurement accuracy is improved; the second detection component 162 and the first burner 21 are both on the same side of the vertical center line of the smoke collecting hood 11; the second detection component 162 is an infrared distance sensor.

[0117] S01 includes:

[0118] S011. Control the rotation of the second detection component 162 to make the infrared light emitted by the second detection component 162 perpendicular to the top surface of the cooking appliance 2, then the second detection component 162 is in the first preset position, and control the second detection component 162 to measure h;

[0119] S012. Control the rotation of the second detection component 162 to make the infrared light emitted by the second detection component 162 reach the top of the first burner 21, then the second detection component 162 is in the second preset position, and control the second detection component 162 to measure l;

[0120] S013. Control the rotation of the second detection component 162 to make the infrared light emitted by the second detection component 162 reach the bottom of the support plate 14, then the second detection component 162 is in the third preset position, and control the second detection component 162 to measure s.

[0121] The above specifically illustrates and describes the exemplary embodiments of the present disclosure. It should be understood that the present disclosure is not limited to the detailed structures, arrangement manners or implementation methods described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. An oil fume suction machine, characterized in that, The range hood includes: A smoke collecting hood (11) formed with a smoke inlet (111). The smoke inlet (111) is divided into multiple smoke inlet areas along the length direction of the smoke collecting hood (11). Each smoke inlet area is provided with a smoke guiding plate group, and each smoke guiding plate group includes a rotatable smoke guiding plate (12) or multiple synchronously rotatable smoke guiding plates (12); the smoke guiding plates (12) of each smoke guiding plate group have multiple working positions, and different working positions correspond to different inclination angles; a cooking stove (2) is arranged below the smoke collecting hood (11), and the cooking stove (2) includes multiple burners, and each burner can be independently controlled to be opened or closed; the multiple burners have multiple opening and closing states; A first detector (161) and a second detector (162) arranged on one side of the smoke collecting hood close to the cooking stove (2). The first detector (161) is used to detect the opening and closing states of the multiple burners, and the second detector (162) is used to detect the position parameters of the smoke collecting hood (11) and the cooking stove (2); A controller electrically connected to both the first detector (161) and the second detector (162). The controller is used to determine the inclination angles corresponding to the working positions of each smoke guiding plate group according to the position parameters of the smoke collecting hood (11) and the cooking stove (2) and the initial inclination angle θ of the smoke guiding plate, and make the smoke guiding plates (12) corresponding to each smoke guiding plate group be in the corresponding working positions according to the opening and closing states of the multiple burners; Two support plates (14) oppositely arranged on both sides of the smoke inlet (111) along the width direction of the smoke collecting hood (11), and the smoke guiding plate (12) is arranged between the two support plates (14); Among them, the multiple burners include a first burner (21) and a second burner (22). The position parameters of the smoke collecting hood (11) and the cooking stove (2) at least include the vertical distance h between the second detector (162) and the top surface of the cooking stove (2), the straight-line distance l between the second detector (162) and the top of the first burner (21), and the horizontal distance s between the second detector (162) and the bottom of the support plate (14).

2. The range hood according to claim 1, wherein The multiple opening and closing states include only the first burner (21) being opened, only the second burner (22) being opened, and both burners being opened.

3. The range hood according to claim 2, characterized in that, The first detector (161) is a temperature sensor and is arranged on one side of the smoke collecting hood (11) close to the cooking stove (2); the first detector (161) is used to detect the temperatures of the first burner (21) and the second burner (22), and further the controller can determine the opening and closing states of the two burners.

4. The range hood according to claim 2, wherein, The multiple smoke inlet areas include a first smoke inlet area and a second smoke inlet area; the smoke guiding plate groups include a first smoke guiding plate group and a second smoke guiding plate group. The first smoke guiding plate group includes multiple first smoke guiding plates (121), and the multiple first smoke guiding plates (121) include a first working position and a second working position; the second smoke guiding plate group includes multiple second smoke guiding plates (122), and the multiple second smoke guiding plates (122) include a third working position and a fourth working position; When only the first burner (21) is turned on, correspondingly, a plurality of the first smoke guide plates (121) are in the first working position and a plurality of the second smoke guide plates (122) are in the third working position; When only the second burner (22) is turned on, correspondingly, a plurality of the first smoke guide plates (121) are in the second working position and a plurality of the second smoke guide plates (122) are in the fourth working position; When both burners are turned on, correspondingly, a plurality of the first smoke guide plates (121) are in the first working position and a plurality of the second smoke guide plates (122) are in the fourth working position.

5. The range hood according to claim 4, wherein, The two support plates (14) are in an inverted isosceles triangle structure; the first smoke guide plate (121) and the second smoke guide plate (122) are rotatably arranged between the two support plates (14), and the initial inclination angles θ of both the first smoke guide plate (121) and the second smoke guide plate (122) are the base angles of the isosceles triangle.

6. The range hood according to claim 5, wherein, The second detection member (162) is rotatably arranged on the smoke collecting hood (11), and the second detection member (162) has a first preset position, a second preset position, and a third preset position; when the second detection member (162) is in the first preset position, the vertical distance h between the second detection member (162) and the top surface of the cooker (2) can be detected; when the second detection member (162) is in the second preset position, the linear distance l between the second detection member (162) and the top of the first burner (21) can be detected; when the second detection member (162) is in the third preset position, the horizontal distance s between the second detection member (162) and the bottom of the support plate (14) can be detected.

7. A control method for a range hood according to any one of claims 4-6, characterized in that, Including: When the cooker (2) is started, determine the opening and closing states of a plurality of the burners; Determine the target working positions of the smoke guide plates (12) corresponding to the respective smoke guide plate groups according to the opening and closing states of a plurality of the burners; Control the smoke guide plates (12) corresponding to the respective smoke guide plate groups to rotate to the target working positions.

8. The control method of the range hood according to claim 7, characterized in that, The determining the opening and closing states of a plurality of the burners includes: Obtain the temperatures of the first burner (21) and the second burner (22); Compare the temperatures of the first burner (21) and the second burner (22) with a preset temperature respectively; When the temperature of the first burner (21) is greater than or equal to the preset temperature and the temperature of the second burner (22) is less than the preset temperature, determine that only the first burner (21) is turned on; When the temperature of the first burner (21) is less than the preset temperature and the temperature of the second burner (22) is greater than or equal to the preset temperature, determine that only the second burner (22) is turned on; When the temperature of the first burner (21) is greater than or equal to the preset temperature and the temperature of the second burner (22) is greater than or equal to the preset temperature, determine that both burners are turned on.

9. The control method of the range hood according to claim 8, characterized in that, The determining the target working positions of the smoke guide plates (12) corresponding to the respective smoke guide plate groups according to the opening and closing states of a plurality of the burners includes: When only the first burner (21) is turned on, determine that the target working position of the first smoke guide plate (121) is the first working position and the target working position of the second smoke guide plate (122) is the third working position; When only the second burner (22) is turned on, determine that the target working position of the first smoke guide plate (121) is the second working position and the target working position of the second smoke guide plate (122) is the fourth working position; When both burners are turned on, determine that the target working position of the first smoke guide plate (121) is the first working position and the target working position of the second smoke guide plate (122) is the fourth working position.

10. The control method of the range hood according to claim 9, wherein, The control method further includes: Before the first use of the range hood, obtain the position parameters of the smoke collecting hood (11) and the cooking stove (2); Determine the inclination angles corresponding to the first working position, the second working position, the third working position, and the fourth working position according to the position parameters of the smoke collecting hood (11) and the cooking stove (2) and the initial inclination angles of the first smoke guide plate (121) and the second smoke guide plate (122).

11. The control method of the range hood according to claim 10, wherein The determining the inclination angles corresponding to the first working position, the second working position, the third working position, and the fourth working position according to the position parameters of the smoke collecting hood (11) and the cooking stove (2) and the initial inclination angles of the first smoke guide plate (121) and the second smoke guide plate (121) includes: Calculate α according to h, l, and s as Determine the inclination angle α1 = 90° - α + θ corresponding to the first working position, the inclination angle α1 corresponding to the second working position ‘ = 90° + α + θ, the inclination angle α2 = α - θ corresponding to the third working position, and the inclination angle α2 corresponding to the fourth working position ‘ = 90° + α - θ; where h is the vertical distance between the top surface of the cooking stove (2) and the second detection member (162); l is the straight-line distance between the top of the first burner (21) and the second detection member (162); s is the horizontal distance between the second detection member (162) and the bottom of the support plate (14); θ is the initial inclination angle of the first smoke guide plate (121) and the initial inclination angle of the second smoke guide plate (122); α is the angle between the connection line between the top of the first burner (21) and the bottom of the support plate (14) and the vertical center line of the smoke collecting hood (11).

12. The control method of the range hood according to claim 11, characterized in that, The second detection member (162) is an infrared distance sensor; the obtaining the position parameters of the smoke collecting hood (11) and the cooking stove (2) includes: Control the second detection member (162) to rotate so that the infrared light emitted by the second detection member (162) is perpendicular to the top surface of the cooking stove (2), then the second detection member (162) is in the first preset position, and control the second detection member (162) to measure h; Control the second detection member (162) to rotate so that the infrared light emitted by the second detection member (162) can reach the top of the first burner (21), then the second detection member (162) is in the second preset position, and control the second detection member (162) to measure l; Control the second detection member (162) to rotate so that the infrared light emitted by the second detection member (162) can reach the bottom of the support plate (14), then the second detection member (162) is in the third preset position, and control the second detection member (162) to measure s.

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