An oil fume machine with automatic adjustment of oil fume position, an adjustment method and a cooking table top

Abstract

The application discloses a cooking fume extractor with an automatically adjusted oil fume position, a cooking fume adjusting method and a cooking table, and belongs to the technical field of cooking utensils. The cooking fume extractor comprises a liftable oil fume absorption assembly, wherein an air inlet of oil fume is arranged on the oil fume absorption assembly; a distance detector is arranged on a region adjacent to the air inlet or at the air inlet, and the distance detector is used for obtaining the distance between a cooking utensil and the air inlet; and the height of the oil fume absorption assembly is adjusted according to the distance. The cooking fume extractor disclosed by the application can automatically adjust the height of the air inlet according to different pot heights, so as to adapt to different cooking utensils and optimize the oil fume absorption effect.

Description

Technical Field

[0001] This invention belongs to the field of cooking appliance technology, specifically relating to a range hood with automatic adjustment of the fume extraction position and adjustment method, and a cooking countertop. Background Technology

[0002] A range hood is an appliance used in a family kitchen to remove fumes and other fumes produced during cooking. For modern kitchens, a range hood is an essential appliance. Existing range hoods, such as wall-mounted range hoods, are directly screwed onto the wall.

[0003] However, this range hood, including other existing range hoods, does not have the function of automatically adjusting the position of the air inlet. Even if the adjustment function is involved, it is often limited to adjusting the fan speed according to the concentration of oil fumes and the temperature inside the cookware. There is a need for a range hood that can adjust the position of the air inlet according to different situations, so as to improve the applicability of the range hood and improve the oil fume extraction effect. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the inventors of this application have improved the structure of the existing range hood. One of the objectives of this invention is to provide a range hood with automatic adjustment of the smoke extraction position. Another objective is to provide a corresponding adjustment method. A third objective is to provide a cooking countertop using the range hood.

[0005] The specific technical solutions are explained below:

[0006] A range hood with automatic adjustment of the fume extraction position includes a liftable fume absorption component, wherein the fume absorption component is provided with an air inlet for fumes.

[0007] A distance detector is provided at the air inlet or in an area adjacent to the air inlet, and the distance detector is used to obtain the distance between the cooking appliance and the air inlet.

[0008] The oil fume absorption component adjusts its height based on the distance.

[0009] Preferably, the distance is the distance between the highest point of the cooking appliance and the air inlet.

[0010] In the above technical solution, the range hood can automatically adjust the height of the air inlet according to the height of different cookware to adapt to different cooking utensils and optimize the effect of smoke extraction.

[0011] Preferably, in order to adjust the suction angle of the air inlet to adapt to different cooking conditions, the fume absorption assembly includes a support frame and a fume absorption part hinged to the upper end of the support frame, and the air inlet is disposed on the fume absorption part.

[0012] Optionally, a rotary motor is provided inside the support frame; the oil fume absorption part rotates around its connection end with the support frame; the rotation is driven by the rotary motor, and in this technical solution, the oil fume absorption angle of the air inlet can be controlled by the rotary motor.

[0013] Preferably, when the range hood is working, the fume absorption component is equipped with a smoke concentration sensor in the area through which the fume flows, and the smoke concentration sensor is used to obtain the concentration of the fume;

[0014] The angle between the fume absorption section and the support frame is adjusted based on the fume concentration.

[0015] This technical solution can adjust the air intake angle of the air inlet according to different cooking conditions based on the concentration of cooking fumes, thereby optimizing the effect of fume extraction.

[0016] It also includes a flue assembly for exhausting fumes, the flue assembly being located at the bottom of the range hood and containing a fan;

[0017] The fan adjusts its rotation speed based on the concentration.

[0018] This technical solution can adjust the air volume of the fan according to the concentration of oil fumes to achieve a more suitable oil fume extraction effect.

[0019] Preferably, it also includes at least a storage component for providing storage space, wherein the fume absorption component is movable relative to the storage component, that is: disposed above the storage component to occupy part of the cooking area where fumes are generated; or, stored within the storage space to leave the cooking area empty.

[0020] Preferably, it also includes a flue assembly for discharging flue gas, disposed below the housing assembly;

[0021] A storage space is formed between the top of the exhaust duct assembly and the side of the storage assembly.

[0022] In the above technical solution, when it is necessary to absorb oil fumes, the oil fume absorption component can be moved from the storage component to a suitable oil fume absorption position to achieve the function of absorbing oil fumes. At this time, the storage space exists as part of the oil fume flow channel.

[0023] In situations where fume extraction is not required, this storage space can be fully utilized to store the fume extraction component inside the storage unit, freeing up the cooking area that the fume extraction component originally occupied. In this case, the fume extraction component does not occupy the space above the stove or the kitchen wall, and it will not hinder the cleaning work in the corresponding area.

[0024] At the same time, by moving the exhaust duct assembly down, the storage space formed between the top of the exhaust duct assembly and the side of the storage assembly can be used to install suitable modules, such as built-in kitchen appliances like ovens, steam ovens, and microwave ovens. With the modules set up in this position, operation is easier and more convenient without having to bend over.

[0025] Preferably, the inventors have designed a lifting technology solution for the oil fume absorption component:

[0026] The storage component is equipped with a lifting mechanism that drives the oil fume absorption component to move up and down.

[0027] The lifting mechanism includes:

[0028] The drive unit provides driving force, the transmission unit transmits driving force, and the output unit outputs driving force.

[0029] The drive unit includes:

[0030] A push rod motor is used to provide the driving force for the up-and-down movement of the fume absorption assembly;

[0031] A drive connector is disposed at the drive end of the push rod motor.

[0032] The transmission unit includes:

[0033] A drive rod assembly is used to transmit the force of the drive connector to the initial drive arm assembly. The drive rod assembly includes two drive rods, one end of each drive rod being hinged to both ends of the drive connector.

[0034] The initial drive arm assembly is used to transmit the force of the drive rod assembly to the intermediate drive arm assembly. The initial drive arm assembly includes two initial drive arms, and the other end of each drive rod is hinged to the middle of the initial drive arm on the same side.

[0035] The intermediate drive arm assembly is used to transmit the force of the initial drive arm assembly to the terminal drive arm assembly. The intermediate drive arm assembly includes at least one drive chain link, and each drive chain link consists of two intermediate drive arms hinged together at their middle positions. The two adjacent ends of the two intermediate drive arms on each drive chain link constitute a first end, and the other two adjacent ends of the intermediate drive arms constitute a second end.

[0036] When the number of drive chain links is one, the two ends of the first end are respectively hinged to one end of the two initial drive arms, and the second end is connected to the terminal drive arm group;

[0037] When the number of drive links is greater than one, the two ends of the first end of one drive link are respectively hinged to one end of the two initial drive arms, and the two ends of the second end of the drive link are hinged to the two ends of the first end of another adjacent drive link. Other drive links are connected in sequence in this manner, and the second end of the last drive link is connected to the terminal drive arm group.

[0038] The terminal drive arm assembly is used to receive the force from the intermediate drive arm assembly and output it. The terminal drive arm assembly includes two terminal drive arms, one end of each of the two terminal drive arms being hinged to the two ends of the second end of the drive chain link.

[0039] The output section is an upper output section, which is used to apply the force output by the terminal drive arm assembly to the fume absorption assembly. The lower surface of the upper output section is hinged to the other end of the terminal drive arm.

[0040] The lifting mechanism also includes:

[0041] The lower support is used to support the lifting mechanism, and the upper surface of the lower support is hinged to the other end of the initial drive arm;

[0042] With the lower support as the fulcrum, the initial drive arm group, the intermediate drive arm group and the terminal drive arm group form a drive force transmission chain, which then applies the drive force to the fume absorption assembly through the upper output part.

[0043] To make the transmission of driving force more stable, two driving force transmission chains can be arranged side by side.

[0044] The preferred lifting mechanism in this technical solution can achieve at least the following beneficial effects:

[0045] ① The driving force is transmitted by several hinged lever arms. This structure outputs the driving force in a relatively flat form, which makes it easy to make the storage components flat. Combined with the downward movement of the exhaust duct components, it can form a more spacious storage space.

[0046] ② Compared to the direct push of the push rod motor, this lifting mechanism can achieve a longer movement distance of the fume absorption component with a shorter push distance of the push rod motor, so as to meet the height requirements of the fume absorption component in the cooking area. Even when facing large pots with high height, it can meet the requirements of fume absorption.

[0047] ③At the same time, it reduces the requirements for the specifications and volume of the push rod motor itself, which can minimize the volume of the storage space itself, thereby reducing the overall volume of the range hood;

[0048] ④ Compared to the direct-drive technology of push rod motor, this lifting mechanism can act on the fume absorption component at a faster rate, reducing the response time of the fume absorption component's output and retraction, especially reducing the response time of the fume absorption component's activity when the stroke is long, thus improving the user's operating experience.

[0049] Preferably, in order to increase the stability of the lifting mechanism, the storage component is provided with a vertical slide rail, and the fume absorption component is provided with a slider that slides along the extension direction of the slide rail. The fume absorption component moves vertically under the action of the slider.

[0050] More preferably, there are two slide rails, which are respectively disposed inside the storage component and on both sides of the lifting mechanism; the slider is fixedly connected to the mounting groove on the inner wall of the fume absorption component.

[0051] Optionally, the fume absorption assembly is further provided with a receiving member, which is used to receive the driving force from the upper output section.

[0052] The automatic adjustment method for the position of the kitchen exhaust fan includes the following steps:

[0053] S1. Turn on the range hood, raise the fume absorption component to the highest position, adjust the fume absorption section to a certain angle, and then turn on the fan at a certain airflow.

[0054] S2. A distance detector installed at the air inlet or in an area adjacent to the air inlet detects the distance between it and the highest point of the cooking appliance, records it as L, and transmits the distance data to the central processing unit.

[0055] S3. The central processing unit compares the distance L with a preset distance standard value L1:

[0056] If L≤L1, the position of the fume absorption component remains unchanged;

[0057] If L > L1, the central processing unit sends an instruction to the push rod motor to drive the lifting mechanism and lower the height of the fume absorption component until L = L1.

[0058] S4. The smoke concentration sensor installed in the area through which the oil fume flows in the fume absorption component acquires the smoke concentration, records it as D, and transmits the concentration data to the central processing unit;

[0059] S5. The central processing unit compares the concentration D with the preset concentration range D1:

[0060] If D < the minimum value in the range D1, the system determines that the user is simmering over low heat. At this time, the central processing unit controls the fan to adjust the speed to low and controls the rotary motor to adjust the oil fume absorption section to a slightly tilted mode to prevent condensate from falling into the pot.

[0061] If D is within the range of D1, the system determines that the user is performing a low-oil operation. At this time, the central processing unit controls the fan to adjust the speed to medium and controls the rotary motor to adjust the oil fume absorption section to a medium tilt mode to prepare for the next cooking step.

[0062] If D > the maximum value in the range D1, the system determines that the user is performing a high-smoke operation. At this time, the central processing unit controls the fan to adjust its speed to a high level and controls the rotary motor to adjust the smoke absorption section to a large tilt mode, increasing the air volume and the smoke collection area.

[0063] The cooking countertop includes a cooktop and uses the range hood described in any of the above technical solutions.

[0064] Preferably, when the fume absorption component is stored in the storage space, the upper surface of the lifting range hood matches the upper surface of the stove. Here, matching means that after storage, the surface of the fume absorption component is as flush as possible with the upper surface of the stove, and the range hood is as completely hidden as possible under the stove.

[0065] In summary, the technical solution described in this invention has the following main beneficial effects:

[0066] Compared with the prior art, the range hood of the present invention can automatically adjust the height of the air inlet according to different cookware heights to adapt to different cooking utensils and optimize the fume extraction effect;

[0067] Furthermore, it can adjust the air intake angle and fan volume according to the concentration of cooking fumes to further optimize the fume extraction effect.

[0068] Meanwhile, based on the requirements of this field and the aforementioned technical effects, the preferred lifting mechanism can optimize the beneficial effects of the range hood from multiple perspectives, such as space occupation, applicable range of oil fume extraction, and response speed.

[0069] Further or more detailed beneficial effects will be described in conjunction with specific embodiments in the detailed implementation. Attached Figure Description

[0070] Figure 1 This is a schematic diagram of the structure of the range hood described in the embodiment.

[0071] Figure 2 yes Figure 1 A structural diagram showing the component breakdown.

[0072] Figure 3 This is a schematic diagram of the structure of the fume absorption section.

[0073] Figure 4 This is a schematic diagram of the internal structure of the support frame.

[0074] Figure 5 This is a schematic diagram of the internal structure of the storage component.

[0075] Figure 6 This is a schematic diagram of the lifting mechanism in its stowed-away state.

[0076] Figure 7 This is a schematic diagram of the lifting mechanism in its output state.

[0077] Figure 8 This is a schematic diagram of a lifting mechanism consisting of two driving force transmission chains.

[0078] Figure 9 This is a schematic diagram of the internal structure of the lifting mechanism that pushes the oil fume absorption component upward.

[0079] Figure 10 This is a schematic diagram of the rotating mechanism of the fume absorption section.

[0080] Figure 11 This is a structural diagram of the integrated stove using the invented range hood in its stowed state.

[0081] Figure 12 This is a structural diagram of an integrated stove using the invented range hood in the state of using the range hood.

[0082] Figure 13 This is a schematic diagram of the internal structure of the smoke exhaust duct assembly described in the embodiment.

[0083] Figure 14 This is a schematic diagram of the control system structure of the range hood described in the embodiment.

[0084] Figure 15 This is a schematic diagram of the working process of the range hood described in the embodiment.

[0085] Figure label:

[0086] 1-Storage component, 1.1-Lifting mechanism, 1.11-Push rod motor, 1.12-Drive connector, 1.13-Drive rod assembly, 1.131-Drive rod, 1.14-Initial drive arm assembly, 1.141-Initial drive arm, 1.15-Intermediate drive arm assembly, 1.151-Drive chain link, 1.151a-First end, 1.151b-Second end, 1.16-Terminal drive arm assembly, 1.161-Terminal drive arm, 1.17-Lower support, 1.18-Upper output, 1.2-Slide rail;

[0087] 2-Fume absorption assembly, 2.1-Support frame, 2.11-Rotating motor, 2.2-Fume absorption section, 2.3-Air inlet, 2.4-Slider, 2.5-Mounting groove, 2.6-Receiving component, 2.7-Distance detector, 2.8-Fume concentration sensor;

[0088] 3-Smoke exhaust duct assembly, 3.1-Rectifier screen, 3.2-Fan impeller, 3.3-Air outlet, 3.4-Air collection chamber, 3.5-Oil collection chamber, 3.6-Oil drain hole;

[0089] a-Storage space, b-Cooking area, c-Placement space. Detailed Implementation

[0090] The present invention will be further explained in conjunction with the embodiments:

[0091] The core technical problem faced by the technical solution of the embodiments of this application stems from the inventor's accurate understanding of the prior art. Therefore, how to optimize the space occupied by the range hood without hindering the cleaning work is a technical problem that the inventor urgently needs to solve.

[0092] At the same time, setting up reasonable / sufficient storage space is also a technical problem that the inventors are trying to solve simultaneously.

[0093] It should be noted that the embodiments do not constitute a limitation on the scope of protection of the claims of this invention. All technical solutions that can be reasonably expected by those skilled in the art based on the technical concepts provided / proved by the embodiments should be covered within the scope of protection of the claims of this invention.

[0094] The specific implementation examples are detailed below:

[0095] Example 1:

[0096] A range hood with automatic adjustment of the fume extraction position, reference Figures 1-5 The range hood consists of a storage component 1, an oil fume absorption component 2, and an exhaust duct component 3.

[0097] The fume absorption assembly 2 is provided with an air inlet 2.3 for fumes, and a filter screen is installed at the air inlet 2.3;

[0098] An ultrasonic distance detector 2.7 is installed in the adjacent area of ​​the air inlet 2.3. The distance detector 2.7 is used to obtain the distance between the highest point of the cooking appliance and the air inlet 2.3; the oil fume absorption component 2 adjusts its height based on this distance.

[0099] Preferably, the fume absorption assembly 2 consists of a support frame 2.1 and a fume absorption part 2.2 hinged to the upper end of the support frame 2.1. The fume absorption part 2.2 rotates around the connection end with the support frame 2.1, and the air inlet 2.3 is disposed on the fume absorption part 2.2.

[0100] A rotary motor 2.11 is provided inside the support frame 2.1; the rotary motor 2.11 provides driving force and drives the oil fume absorption part 2.2 to rotate through a square hole, so as to achieve angle adjustment within the range of α. In this embodiment, the range of α is 45°.

[0101] Specifically, when the range hood is working, the fume absorption component has a smoke concentration sensor 2.8 installed inside the air inlet 2.3 to obtain the concentration of the fumes. The fume absorption part 2.2 adjusts the angle between itself and the support frame 2.1 based on this concentration.

[0102] Preferably, it also includes a storage component 1 for providing storage space a, and the oil fume absorption component 2 is movable relative to the storage component 1, wherein it is disposed above the storage component 1 to occupy part of the cooking area b where oil fumes are generated; or it is stored in the storage space a to leave the cooking area b empty.

[0103] And includes a flue gas exhaust assembly 3 for discharging flue gas, which contains a fan. The fan's speed, i.e., airflow, is also adjusted based on the concentration. For details, please refer to [link / reference]. Figure 13 The flue gas flows into the gas collection chamber 3.4 after being subjected to negative pressure by the impeller 3.2 of the fan, and then enters the fan through the rectifier mesh 2.1 above the exhaust duct assembly 3, and is discharged from the outlet 3.3. An oil drain hole 3.6 is provided on the bottom plate of the gas collection chamber 3.4, and an oil collection chamber 3.5 is provided directly below the oil drain hole. The oil in the fumes is condensed and drips onto the bottom plate of the gas collection chamber 3.4, and is discharged into the oil collection chamber 3.5 through the oil drain hole 3.6 and collected.

[0104] In this embodiment, the oil fume absorption component 2 is directly driven to move by the push rod motor 1.11.

[0105] The range hood mentioned in this embodiment can automatically adjust the height of the air inlet according to different cookware heights to adapt to different cooking utensils and optimize the fume extraction effect; it can also adjust the air inlet angle 2.3 and the fan air volume according to the concentration of fumes to correspond to different cooking states, further optimizing the fume extraction effect.

[0106] Furthermore, when it is necessary to absorb oil fumes, the oil fume absorption component 2 can be moved from the storage component 1 to a suitable oil fume absorption position to realize the function of oil fume absorption. At this time, the storage space a exists as part of the oil fume flow channel.

[0107] In situations where fume extraction is not required, this storage space a can be fully utilized to store the fume absorption component 2 in the storage component 1, thereby freeing up the cooking area b that was originally occupied by the fume absorption component 2. In this case, the fume absorption component 2 does not occupy the space above the stove or the space on the kitchen wall, and it will not hinder the cleaning work in the corresponding area.

[0108] The preferred embodiment of the automatic adjustment method for the position of the oil fume extraction device is described in reference to... Figure 14 and Figure 15 It includes the following steps:

[0109] S1. Turn on the range hood via the range hood linkage sensor module or control board module, raise the fume absorption component 2 to the highest position, and at the same time rotate and adjust the fume absorption part 2.2 to a position where α is 30°, and then turn on the fan at a medium speed.

[0110] S2. Air inlet 2.3 Adjacent ultrasonic distance detector 2.7 Detects the distance between it and the highest point of the cooking appliance, records it as L, and transmits the data of L to the central processing unit;

[0111] S3. The central processing unit compares the distance L with the preset distance standard value L1:

[0112] If L≤L1, the height position of the fume absorption component 2 remains unchanged;

[0113] If L > L1, the central processing unit sends an instruction to the push rod motor 1.11 to drive the height of the oil fume absorption component 2 to move down until L = L1.

[0114] S4. The smoke concentration sensor 2.8 installed inside the air inlet 2.3 acquires the smoke concentration, records it as D, and transmits the concentration D data to the central processing unit;

[0115] S5. The central processing unit compares the concentration D with the preset temperature range D1:

[0116] If D < the minimum value in the range of D1, the system determines that the user is simmering over low heat. At this time, the central processing unit controls the fan to adjust the speed to low and controls the rotary motor 2.11 to adjust the oil fume absorption part 2.2 to rotate to a position where α is 15° to prevent condensate from falling into the pot.

[0117] If D is within the range of D1, the system determines that the user is performing a low-oil operation. At this time, the existing air volume level is maintained, and the rotary motor 2.11 is controlled to adjust the oil fume absorption section 2.2 to rotate to a position where α is 30°, in preparation for the next cooking step.

[0118] If D > the maximum value in the range of D1, the system determines that the user is performing stir-frying or other high-oil-smoke operations. At this time, the central processing unit controls the fan to adjust its speed to high and controls the rotary motor 2.11 to adjust the oil fume absorption unit 2.2 to rotate to a position where α is 45°, thereby increasing the air volume and the smoke collection area.

[0119] Example 2:

[0120] A range hood with automatic adjustment of the position of the oil fume extraction component is disclosed in this embodiment, which differs from Embodiment 1 in the lifting method of the oil fume absorption component 2.

[0121] Please refer to this as well. Figure 6 and Figure 7 Compared to the method in Embodiment 1 where a push rod motor 1.11 is used to directly drive the oil fume absorption component 2, in this embodiment, the storage component 1 is provided with a lifting mechanism 1.1 that drives the oil fume absorption component 2 to move up and down.

[0122] The lifting mechanism 1.1 includes the following components:

[0123] The push rod motor 1.11 is used to provide the driving force for the up-and-down movement of the oil fume absorption assembly 2;

[0124] The drive connector 1.12 is located at the drive end of the push rod motor 1.11 and moves with the drive end of the push rod motor 1.11.

[0125] The drive rod assembly 1.13 is used to transmit the force of the drive connector 1.12 to the initial drive arm assembly 1.14. The drive rod assembly 1.13 includes two drive rods 1.131, one end of each drive rod 1.131 is hinged to both ends of the drive connector 1.12.

[0126] The initial drive arm assembly 1.14 is used to transmit the force of the drive rod assembly 1.13 to the intermediate drive arm assembly 1.15. The initial drive arm assembly 1.14 includes two initial drive arms 1.141, and the other end of each drive rod 1.131 is hinged to the middle position of the initial drive arm 1.141 on the same side.

[0127] The intermediate drive arm assembly 1.15 is used to transmit the force of the initial drive arm assembly 1.13 to the terminal drive arm assembly 1.16. The intermediate drive arm assembly 1.15 includes two drive links 1.151. Each drive link 1.151 is composed of two intermediate drive arms that are hinged to each other in the middle. On the drive link 1.151, the two adjacent ends of the two intermediate drive arms form the first end 1.151a, and the other two adjacent ends form the second end 1.151b. The two ends of the first end 1.151a of one drive link 1.151 are respectively hinged to one end of the two initial drive arms 1.141. The two ends of the second end 1.151b of the drive link 1.151 are hinged to the two ends of the first end 1.151a of another adjacent drive link 1.151. The second end 1.151b of the other drive link 1.151 is connected to the terminal drive arm assembly 1.16.

[0128] The terminal drive arm assembly 1.16 is used to receive the force from the intermediate drive arm assembly 1.15 and output it. The terminal drive arm assembly 1.16 includes two terminal drive arms 1.161. One end of each of the two terminal drive arms 1.161 is hinged to the two ends of the second end 1.151b of the other drive link 1.151 mentioned above.

[0129] A flat lower support 1.17 is used to support the lifting mechanism 1.1. The upper surface of the lower support 1.14 is hinged to the other end of the initial drive arm 1.131.

[0130] The flat upper output section 1.18 is used to apply the force output by the terminal drive arm assembly 1.16 to the fume absorption assembly 2. The lower surface of the upper output section 1.18 is hinged to the other end of the terminal drive arm 1.161.

[0131] With the lower support 1.17 as the fulcrum, the initial drive arm group 1.14, the intermediate drive arm group 1.15 and the terminal drive arm group 1.16 form a drive force transmission chain, which then applies the drive force to the fume absorption assembly 2 through the upper output 1.18.

[0132] Compared to the method in Embodiment 1 where the push rod motor 1.11 directly drives the oil fume absorption component 2, the lifting mechanism in this embodiment can achieve at least the following benefits:

[0133] ① The driving force is transmitted by several hinged lever arms. This structure outputs the driving force in a relatively flat form, which makes it easy to make the storage component 1 flat. Combined with the design of the exhaust duct component 3 located at the bottom, it can form a more spacious storage space c.

[0134] ② Compared with the direct push solution of the push rod motor 1.11, the lifting mechanism 1.1 can achieve a longer movement distance of the oil fume absorption component 2 with a shorter push distance of the push rod motor 1.11, so as to meet the height requirements of the oil fume absorption component 2 in the cooking area b. Even when facing large pots with high height, it can meet the needs of oil fume absorption.

[0135] ③At the same time, since the stroke requirement of the push rod motor 1.11 itself has been reduced, the requirements for the specifications and volume of the push rod motor 1.11 itself have been reduced, which can minimize the volume of the accommodating space a, thereby reducing the overall volume of the range hood;

[0136] ④ Compared with the direct push of the push rod motor, the lifting mechanism 1.1 can act on the fume absorption component 2 at a faster rate, reducing the response time of the fume absorption component 2 moving out and being put back in, especially reducing the response time of the fume absorption component 2 when the stroke is long, thus improving the user's operating experience.

[0137] To ensure more stable transmission of driving force, in a preferred embodiment, such as Figure 8 As shown, two driving force transmission chains can also be arranged side by side.

[0138] In a preferred embodiment, the fume absorption assembly 2 is further provided with a flat plate-shaped receiving member 2.6 for receiving the driving force from the upper output section 1.18.

[0139] In a preferred embodiment, in order to maximize the capacity of the storage space c, the storage component 1 is positioned above one side of the exhaust duct component 3.

[0140] The automatic adjustment method for the fume extraction position in this embodiment is the same as in Embodiment 1.

[0141] Example 3:

[0142] A range hood with automatic adjustment of the fume extraction position, reference Figure 4 , Figure 5 and Figure 9 Based on embodiment 2, in order to further increase the stability of the lifting mechanism, two vertical slide rails 1.2 are provided inside the storage component 1. The two slide rails 1.2 are respectively provided inside the storage component 1 and on both sides of the lifting mechanism 1.1.

[0143] The inner wall of the fume absorption component 2 is provided with two mounting grooves 2.5. The mounting grooves 2.5 are used to install the slider 2.4. The slider 2.4 slides along the extension direction of the slide rail 1.2, and the fume absorption component 2 moves vertically under the drive of the slider 2.4.

[0144] The automatic adjustment method for the fume extraction position in this embodiment is the same as in Embodiment 1.

[0145] Example 4:

[0146] A type of cooking countertop, reference Figure 11 and Figure 12 A cooking countertop equipped with a range hood as described in any of the above embodiments is provided, which includes a stove. When the fume absorption component 2 is stored in the storage space a, the upper surface of the fume absorption component 2 is basically flush with the upper surface of the stove, and the range hood is hidden below the stove.

[0147] In the description of this specification, the references to terms such as "embodiment," "basic embodiment," "preferred embodiment," "other embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0148] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0149] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for automatic adjustment of the position of an oil fume suction device, characterized in that, It comprises the following steps: S1. Turn on the range hood, and raise the oil fume absorption assembly (2) to the highest position, adjust the oil fume absorption part (2.2) to a certain angle, and then turn on the fan at a certain air volume; S2. The distance detector (2.7) arranged at the air inlet (2.3) or the area adjacent to the air inlet (2.3) detects the distance between the air inlet (2.3) and the highest part of the cooking appliance, and records the distance as L, and transmits the data of the distance to the central processor; S3. The central processor compares the distance L with the preset distance standard value L1: If L≤L1, the position of the oil fume absorption assembly (2) remains unchanged; If L>L1, the central processor sends an instruction to the push rod motor (1.11) to drive the lifting mechanism (1.1) to lower the height of the oil fume absorption assembly (2) until L=L1; S4. The smoke concentration sensor (2.8) arranged in the area through which the oil fume flows acquires the smoke concentration of the oil fume, and records the concentration as D, and transmits the data of the concentration to the central processor; S5. The central processor compares the concentration D with the preset concentration range D1: If D<the minimum value in the range of D1, the system determines that the user is simmering on a small fire, and at this time the central processor controls the rotating motor (2.11) to adjust the oil fume absorption part (2.2) to rotate to a small inclination degree mode, i.e. to adjust the oil fume absorption part (2.2) to rotate to an angle of 15°, to prevent the condensed water from falling into the pot; If D is in the range of D1, the system determines that the user is operating with less oil, and at this time the central processor controls the rotating motor (2.11) to adjust the oil fume absorption part (2.2) to rotate to a medium inclination degree mode, i.e. to adjust the oil fume absorption part (2.2) to rotate to an angle of 30°, to prepare for the next cooking; If D>the maximum value in the range of D1, the system determines that the user is operating with more oil fume, and at this time the central processor controls the rotating motor (2.11) to adjust the oil fume absorption part (2.2) to rotate to a large inclination degree mode, i.e. to adjust the oil fume absorption part (2.2) to rotate to an angle of 45°, to increase the area of fume collection. α is the turning angle of the oil fume absorption part (2.2) from the vertical state of the face where the air inlet (2.3) is located.

2. The method of automatically adjusting according to claim 1, wherein, In step S5: If D<the minimum value in the range of D1, at this time the central processor controls the fan to adjust the rotating speed to a low gear; If D is in the range of D1, at this time the central processor controls the fan to adjust the rotating speed to a medium gear to increase the air volume; If D>the maximum value in the range of D1, at this time the central processor controls the fan to adjust the rotating speed to a high gear to further increase the air volume.

3. A hood with automatic adjustment of the position of the hood according to the method of automatic adjustment according to claim 1 or 2, characterised in that, It comprises a liftable oil fume absorption assembly (2), and the oil fume absorption assembly (2) is provided with an air inlet (2.3) for oil fume; A distance detector (2.7) is arranged at the air inlet (2.3) or the area adjacent to the air inlet (2.3), and the distance detector (2.7) is used to obtain the distance between the cooking appliance and the air inlet (2.3); The oil fume absorption assembly (2) adjusts its height based on the distance. The oil fume absorption component (2) comprises a support frame (2.1) and an oil fume absorption part (2.2) hinged to the upper end of the support frame (2.1), and the air inlet (2.3) is arranged on the oil fume absorption part (2.2); The support frame (2.1) is provided with a rotating motor (2.11); The oil fume absorption part (2.2) rotates around the connecting end with the support frame (2.1); The rotating motion is driven by the rotating motor (2.11); When the range hood is working, the oil fume absorption component (2) is provided with a smoke concentration sensor (2.8) in the area through which the oil fume flows, and the smoke concentration sensor (2.8) is used to obtain the concentration of the oil fume; The oil fume absorption part (2.2) adjusts the angle between itself and the support frame (2.1) according to the concentration.

4. The hood according to claim 3, characterized in that: The distance is the distance between the highest part of the cooking utensil and the air inlet (2.3).

5. The hood according to claim 3, wherein: Further comprising a smoke exhaust component (3) for exhausting smoke, which is arranged at the bottom of the range hood and is provided with a fan inside; The fan adjusts its own rotating speed according to the concentration.

6. The hood according to claim 3, wherein: Further comprising a storage component (1) for providing a storage space (a), and the oil fume absorption component (2) is movably arranged relative to the storage component (1), which is arranged above the storage component (1) to occupy part of the cooking area (b) where the oil fume is generated, or is stored in the storage space (a) to make the cooking area (b) empty.

7. The hood according to claim 6, characterized in that: The storage component (1) is provided with a lifting mechanism (1.1) for driving the oil fume absorption component (2) to move up and down. The lifting mechanism (1.1) comprises: a driving part for providing driving force, a transmission part for transmitting driving force, and an output part for outputting driving force.

8. The hood according to claim 7, characterized in that: The driving part comprises: a push rod motor (1.11) for providing driving force for the up and down movement of the oil fume absorption component (2); a driving connecting piece (1.12) arranged at the driving end of the push rod motor (1.11).

9. The hood according to claim 8, characterized in that: The transmission part comprises: a driving rod group (1.13) for transmitting the force of the driving connecting piece (1.12) to the initial driving arm group (1.14), and the driving rod group (1.13) comprises two driving rods (1.131), and one end of each driving rod (1.131) is hinged to one end of the driving connecting piece (1.12).

10. The oil fume machine of claim 9, wherein: the initial driving arm group (1.14) is used to transmit the force of the driving rod group (1.13) to the intermediate driving arm group (1.15), and the initial driving arm group (1.14) comprises two initial driving arms (1.141), and the other end of each driving rod (1.131) is hinged to the middle part of the initial driving arm (1.141) on the same side.

11. The oil fume machine of claim 10, wherein: The intermediate driving arm group (1.15) is used for transmitting the force of the initial driving arm group (1.13) to the terminal driving arm group (1.16), and comprises at least one driving link (1.151), each of which is composed of two intermediate driving arms which are hingedly connected to each other at the middle position; the two ends of the driving link (1.151) adjacent to each other form a first end (1.151a), and the other two ends of the intermediate driving arms adjacent to each other form a second end (1.151b). When the number of the driving links (1.151) is one, the two ends of the first end (1.151a) are respectively hingedly connected to one end of two initial driving arms (1.141), and the second end (1.151b) is connected to the terminal driving arm group (1.16). When the number of the driving links (1.151) is more than one, the two ends of the first end (1.151a) of one driving link (1.151) are respectively hingedly connected to one end of two initial driving arms (1.141), the two ends of the second end (1.151b) of the driving link (1.151) are hingedly connected to the two ends of the first end (1.151a) of another driving link (1.151) adjacent to the driving link (1.151), and the other driving links (1.151) are sequentially connected in this way, and the second end (1.151b) of the last driving link (1.151) is connected to the terminal driving arm group (1.16).

12. The range hood with an automatically adjusted oil fume position according to claim 11, characterized in that: The terminal driving arm group (1.16) is used for receiving the force of the intermediate driving arm group (1.15) and outputting to the output part, and comprises two terminal driving arms (1.161), one end of each of the two terminal driving arms (1.161) is hingedly connected to the two ends of the second end (1.151b) of the driving link (1.151).

13. The hood according to claim 12, characterized in that: The transmission part comprises: The upper output part (1.18) is used for applying the force output by the terminal driving arm group (1.16) to the oil fume absorbing assembly (2), and the lower surface of the upper output part (1.18) is hingedly connected to the other end of the terminal driving arm (1.161).

14. The hood according to claim 13, characterized in that: The lifting mechanism (1.1) further comprises: The lower support part (1.17) is used for supporting the lifting mechanism (1.1), and the upper surface of the lower support part (1.14) is hingedly connected to the other end of the initial driving arm (1.131); The initial driving arm group (1.14), the intermediate driving arm group (1.15) and the terminal driving arm group (1.16) constitute a driving force transmission chain with the lower support part (1.17) as the fulcrum, and the driving force transmission chain transmits the driving force to the oil fume absorbing assembly (2) through the upper output part (1.18).

15. The hood according to claim 14, characterized in that: Two driving force transmission chains are arranged side by side.

16. A hood according to any one of claims 7 to 15, characterized in that: The storage assembly (1) is provided with vertical slide rails (1.2), the oil fume absorption assembly (2) is provided with a sliding block (2.4) sliding along the extension direction of the slide rails (1.2), and the oil fume absorption assembly (2) moves vertically under the driving of the sliding block (2.4); The number of the slide rails (1.2) is two, which are arranged on the two sides of the lifting mechanism (1.1) in the storage assembly (1); The sliding block (2.4) is fixedly connected to a mounting groove (2.5) in the inner wall of the oil fume absorption assembly (2).

17. A hood according to any one of claims 7 to 15, characterized in that: The oil fume absorption assembly (2) is further provided with a receiving member (2.6), which is used for receiving driving force from the output part.

18. A cooktop comprising a hob, characterized in that: The oil fume absorption assembly (2) is collected in the storage space (a), and the upper surface of the oil fume machine matches the upper surface of the cooking appliance.

19. The cooktop of claim 18, wherein: The oil fume absorption assembly (2) is collected in the storage space (a), and the upper surface of the oil fume machine matches the upper surface of the cooking appliance.

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