Lifting structure, range hood and control method thereof

Abstract

This invention discloses a lifting structure, a dishwasher, and a control method thereof. The lifting structure drives the range hood body to move up and down. It also includes two lifting components, each mounted on a wall. A fixing part is provided at the output end of each lifting component, and mounting parts are provided on the left and right sides of the rear end of the range hood body. The fixing part and the mounting parts cooperate to allow the range hood body to be detachably mounted on the output ends of the two lifting components. The movement of the lifting components drives the range hood body to move up and down vertically relative to the wall. During installation, the lifting components are first fixed to the wall, and then the entire range hood is directly hung on the lifting components, thus quickly completing the installation of the range hood.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to a lifting structure, a range hood, and a control method thereof. Background Technology

[0002] As users demand higher utilization of kitchen space, traditional range hoods, being frequently used and relatively large appliances, suffer from drawbacks such as occupying significant kitchen space, low functional integration, and unsightly appearance. Younger consumers are increasingly considering built-in and integrated products when purchasing range hoods. Currently, some fully concealed lift-up range hoods have appeared on the market, but their lifting structures are complex, their function is limited to smoke extraction, and due to installation height errors, it is difficult to achieve a completely flush fit between the range hood and the cabinets after installation, affecting the overall aesthetics of the kitchen. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes a lifting structure, which is simple in structure. During installation, the lifting component is first fixed to the wall, and then the entire range hood is directly hung on the lifting component, thereby quickly completing the installation of the range hood.

[0004] Secondly, this invention also proposes a range hood with a simple structure that can effectively improve the user experience of the range hood.

[0005] In addition, the present invention also proposes a control method for a range hood, which is simple and feasible and allows the hanging height of the range hood to be adjustable, thereby adapting the range hood to the installation height of the cabinet and achieving a flush-mounted fully concealed installation effect.

[0006] The first objective mentioned above is achieved through the following technical solution:

[0007] A lifting structure is provided for driving the range hood body to move up and down. It also includes two lifting components, which are respectively mounted on the wall. A fixing part is provided on the output end of the lifting component, and mounting parts are respectively provided on the left and right sides of the rear end of the range hood body. The fixing part and the mounting part are connected to each other so that the range hood body can be detachably mounted on the output ends of the two lifting components. The movement of the lifting components drives the range hood body to move up and down in the vertical direction relative to the wall.

[0008] In some embodiments, the lifting assembly includes a fixed frame, a movable frame, and a drive motor, wherein the fixed frame is mounted on the wall, the movable frame is slidably connected to the fixed frame, the drive motor is located at the lower end of the fixed frame, a lifting screw is provided on the output end of the drive motor, the end of the lifting screw away from the drive motor is connected to the upper wall of the movable frame to drive the movable frame to move vertically up and down, and the fixed part is provided on the upper wall of the movable frame.

[0009] In some embodiments, the lifting assembly further includes a position sensing module that senses the height of the movable frame, and the position sensing module is used to control the lifting movement of the movable frame.

[0010] In some embodiments, the position sensing module includes a plurality of Hall sensors and a magnetic sheet, wherein the plurality of Hall sensors are respectively arranged at intervals along the vertical direction on the movable frame, and the magnetic sheet is arranged on the fixed frame. The magnetic sheet is connected in cooperation with the Hall sensors to control the lifting height of the movable frame.

[0011] In some embodiments, a fixing plate is provided at the upper end of the movable frame, and a protrusion is provided on the fixing plate to form the fixing part. A through hole is provided at the top of the rear end of the smoke machine body to form the mounting part. The protrusion is inserted into the through hole so that the mounting part and the fixing part are connected together.

[0012] In some embodiments, the lifting assembly further includes a first slide rail and a second slide rail, wherein the first slide rail is disposed on the fixed frame and the second slide rail is disposed on the movable frame, and the first slide rail and the second slide rail are connected to each other so that the movable frame and the fixed frame are slidably connected together.

[0013] In some embodiments, a weighing sensor is also included, which is respectively disposed on the output end of the two lifting components and is disposed corresponding to the top position of the rear end of the range hood body to detect the weight of the range hood body.

[0014] The second objective mentioned above is achieved through the following technical solution:

[0015] A range hood includes a lifting structure as described in any of the above embodiments.

[0016] In some embodiments, a cooking device is also included, wherein an open receiving cavity is provided at the front end of the range hood body, and the cooking device is disposed in the receiving cavity.

[0017] The third objective mentioned above is achieved through the following technical solution:

[0018] A control method for a range hood, applied to a range hood as described in any of the above embodiments, the control method for the range hood comprising the following steps:

[0019] The mounting part of the range hood body is connected to the fixing part of the lifting assembly;

[0020] The weight is detected by weighing sensors located on the two lifting components to obtain the first weight value and the second weight value of the smoke hood body respectively.

[0021] The deviation between the first weight value and the second weight value is compared with a preset deviation coefficient, and the comparison result is used to determine whether the range hood body has completed the hanging work.

[0022] After the range hood body is installed, adjust the installation height of the range hood body according to the set installation height.

[0023] After the range hood body is installed, the raising and lowering of the range hood body during the start-up or shutdown process is controlled according to the preset program.

[0024] In some embodiments, the step of adjusting the installation height of the range hood body according to the set installation height after the range hood body has been installed includes:

[0025] A first Hall sensor, a second Hall sensor, a third Hall sensor, and a fourth Hall sensor are sequentially and intermittently arranged on the movable frame from top to bottom, thereby forming an upper limit height position, an initial installation height position, a preset working height position, and a lower limit height position in sequence;

[0026] After the hanging work is completed, the range hood body is controlled to move upward until the third Hall sensor establishes a connection with the magnetic plate on the fixing frame so that the hanging height position of the range hood body is at the initial installation height position;

[0027] Determine whether the top wall of the smoke collection hood of the range hood body is flush with the bottom wall of the cabinet; if so, the installation of the range hood body is completed; if not, continue to adjust the installation height of the range hood body until the installation of the range hood body is completed.

[0028] Record the number of motor steps required for the range hood body to rise or fall from the initial installation height position to the set installation height position.

[0029] In some embodiments, the step of continuing to adjust the installation height of the range hood body until the installation of the range hood body is completed includes:

[0030] Manually adjust the installation height of the range hood body so that the top wall of the smoke collection hood body is flush with the bottom wall of the cabinet.

[0031] In some embodiments, the step of controlling the raising and lowering of the range hood body during startup or shutdown according to a preset program after the range hood body is installed includes:

[0032] The range hood body is activated to perform smoke extraction, and the range hood body descends to the preset working height position;

[0033] After the range hood body is closed, the range hood body rises to the initial installation height position;

[0034] The range hood body is driven to rise or fall to the set installation height position according to the recorded number of motor steps.

[0035] In some embodiments, the step of comparing the deviation between the first weight value and the second weight value with a preset deviation coefficient, and determining whether the range hood body has completed the hanging operation based on the comparison result, includes:

[0036] Determine whether the deviation between the first weight value and the second weight value is less than the preset deviation coefficient;

[0037] If so, it can be determined that the range hood body has completed the hanging work;

[0038] If not, it is determined that the range hood body has not completed the hanging work, and an alarm signal will be issued until the hanging work is completed.

[0039] In some embodiments, the deviation between the first weight value and the second weight value is calculated using the following formula: △Q=(Q1-Q2)*100%, where △Q is the deviation between the first weight value and the second weight value, Q1 is the first weight value, and Q2 is the second weight value.

[0040] Compared with the prior art, the present invention has at least the following beneficial effects:

[0041] 1. The lifting structure of the present invention is simple in structure. During installation, the lifting component is first fixed on the wall, and then the entire range hood is directly hung on the lifting component, so that the installation of the range hood can be completed quickly.

[0042] 2. The range hood of the present invention has a simple structure and can effectively improve the user experience of the range hood.

[0043] 3. The control method of the range hood of the present invention is simple and feasible, and can make the hanging height of the range hood adjustable, so as to adapt the range hood to the installation height of the cabinet, thereby achieving the effect of flush-mounted and fully concealed installation. Attached Figure Description

[0044] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0045] Figure 1 This is a schematic diagram of the range hood in Embodiment 1 of the present invention;

[0046] Figure 2 This is a schematic diagram of the first structure of the lifting structure in Embodiment 1 of the present invention;

[0047] Figure 3 This is a schematic diagram of the second structure of the lifting structure in Embodiment 1 of the present invention;

[0048] Figure 4 This is a flowchart illustrating the dishwasher control method in Embodiment 2 of the present invention. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of this invention will be clearly and completely described below in conjunction with the embodiments of this invention. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. The components of the embodiments of this invention can be arranged and designed in various different configurations.

[0050] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of the claimed technical solutions of the invention.

[0051] Example 1:

[0052] like Figures 1 to 3As shown, this embodiment provides a lifting structure for driving the range hood body 1 to move up and down. It also includes two lifting components 2, which are respectively installed on the wall. A fixing part 21 is provided on the output end of the lifting component 2, and mounting parts are respectively provided on the left and right sides of the rear end of the range hood body 1. The fixing part 21 and the mounting part are connected to each other so that the range hood body 1 can be detachably installed on the output end of the two lifting components 2. The movement of the lifting components 2 drives the range hood body 1 to move up and down in the vertical direction relative to the wall.

[0053] In this embodiment, since the lifting structure is preferably applied to the range hood, the lifting structure is suitable for driving the range hood body 1 to move up and down. Two lifting components 2 are arranged at intervals in the horizontal direction of the wall. Fixing parts 21 are respectively provided on the output end of the two lifting components 2. Mounting parts are respectively provided on the left and right sides of the rear end of the range hood body 1. The fixing parts 21 and the mounting parts are connected to each other to detachably mount the range hood body 1 on the output end of the two lifting components 2. Then, by the movement of the lifting components 2, the range hood body 1 moves up or down in the vertical direction relative to the wall. In this way, the installation height of the range hood body 1 can be adjusted so that the hanging height of the range hood is adjustable, thereby adapting the range hood to the installation height of the cabinet, and thus achieving a flush-mounted fully concealed installation effect. Its structure is simple. During installation, the lifting components 2 are first fixed to the wall, and then the entire range hood is directly hung on the lifting components, so that the installation of the range hood can be completed quickly.

[0054] Furthermore, the lifting assembly 2 includes a fixed frame 22, a movable frame 23, and a drive motor 24. The fixed frame 22 is mounted on the wall, and the movable frame 23 is slidably connected to the fixed frame 22. The drive motor 24 is located at the lower end of the fixed frame 22. A lifting screw 25 is provided on the output end of the drive motor 24. The end of the lifting screw 25 away from the drive motor 24 is connected to the upper wall of the movable frame 23 to drive the movable frame 23 to move vertically. A fixing part 21 is provided on the upper wall of the movable frame 23.

[0055] Preferably, the lifting assembly 2 further includes a position sensing module for sensing the height of the movable frame 23, and the position sensing module is used to control the lifting movement of the movable frame 23.

[0056] Specifically, the position sensing module includes multiple Hall sensors 27 and magnetic sheets 29. The multiple Hall sensors 27 are respectively arranged at intervals along the vertical direction on the movable frame 23, and the magnetic sheets 29 are arranged on the fixed frame 22. The magnetic sheets 29 are connected with the Hall sensors to control the lifting height of the movable frame 23.

[0057] Preferably, a fixing plate 26 is provided at the upper end of the movable frame 23, and a protrusion is provided on the fixing plate 26 to form a fixing part 21. A through hole is provided at the top of the rear end of the smoke machine body 1 to form an installation part. The protrusion is inserted into the through hole so that the installation part and the fixing part 21 are connected together.

[0058] Furthermore, the lifting assembly 2 also includes a first slide rail and a second slide rail 28, wherein the first slide rail is disposed on the fixed frame 22 and the second slide rail 28 is disposed on the movable frame 23, and the first slide rail and the second slide rail 28 are connected to each other so that the movable frame 23 and the fixed frame 22 are slidably connected together.

[0059] Specifically, it also includes a weighing sensor 3, which is respectively installed on the output end of the two lifting components 2. The weighing sensor 3 is installed at the top position of the rear end of the range hood body 1 to detect the weight of the range hood body 1.

[0060] In this embodiment, a recessed cavity is provided on the rear wall of the range hood body 1 to cooperate with the lifting assembly 2, so that the rear wall of the range hood body 1 is fitted to the wall. The fixed frame 22 is installed on the wall, and the movable frame 23 is set on the range hood body 1. At the same time, a first slide rail is provided on the movable frame 23, and a second slide rail 28 is provided on the fixed frame 22. The first slide rail and the second slide rail 28 are connected to each other so that the movable frame 23 and the fixed frame 22 are slidably connected together. The drive motor 24 is installed at the lower end of the fixed frame 22. The lower end of the lifting screw 25 is connected to the output end of the drive motor 24, and the upper end of the lifting screw 25 is connected to the upper end wall of the movable frame 23 to drive the movable frame 23 to move up and down relative to the fixed frame 22, so that the movable frame 23 moves in the vertical direction. Since the lifting assembly 2 and the range hood body 1 are completely separate and independent as two structural modules, the lifting assembly 2 and the range hood body 1 can be installed and maintained separately, making the installation and maintenance of the product simpler. Furthermore, a fixing plate 26 is provided at the upper end of the movable frame 23. A protrusion extending upwards from the bottom of the fixing plate 26 forms a fixing part 21. A through hole is provided at the top of the rear end of the range hood body 1 to form an installation part. External force drives the range hood body 1 to descend from top to bottom until the protrusion is inserted into the through hole, allowing the installation part and the fixing part 21 to engage and connect together. This allows the range hood body 1 and the lifting assembly 2 to be detachably assembled together. Further, to prevent the range hood from accidentally tipping over and falling off, a limit plate is provided at the top of the movable frame 23. The lower side of the limit plate is attached to the movable plate, and the other side is fixedly connected to the top plate of the range hood housing with screws. This prevents the installation part of the range hood body 1 from separating from the fixing part 21 of the lifting assembly 2, thereby effectively improving the stability of the product installation.

[0061] More preferably, multiple Hall sensors 27 are arranged vertically at intervals on the fixed frame 22. The specific number of Hall sensors 27 is four, but it is not limited to the above number, and other more suitable numbers can be selected according to actual needs. When the specific number of Hall sensors 27 is four, that is, the first Hall sensor, the second Hall sensor, the third Hall sensor, and the fourth Hall sensor are arranged sequentially from top to bottom on the fixed frame 22, thereby forming an upper limit height position, an initial installation height position, a preset working height position, and a lower limit height position. Since in the vertical direction, the upper limit height position is greater than the initial installation height position, the preset working height position, and the lower limit height position, the upper limit height position is the maximum rising height of the range hood body 1, the preset working height position is the height position of the range hood body 1 when exhausting smoke, and the lower limit height position is the maximum falling height of the range hood body 1. The magnetic plate 29 is arranged on the fixed frame 22. When the drive motor 24 drives the movable frame 23 to move up and down in the vertical direction, the magnetic plate 29 senses each other with any one of the multiple Hall sensors, thereby controlling the lifting height of the movable frame 23.

[0062] In this embodiment, to prevent the range hood from falling due to improper installation, a weighing sensor 3 is provided on the output end of each of the two lifting components 2. Preferably, there are two weighing sensors 3. The weighing sensors 3 are positioned corresponding to the top of the rear end of the range hood body 1. If the left or right side of the range hood does not contact the weighing sensor 3, it is determined that the entire unit is not installed correctly. Then, a voice or text message prompts that the installation is incomplete. Installation is completed only when both the left and right sides of the range hood contact the weighing sensor, and the detected weight parameter meets the preset deviation coefficient. Then, the weight of the range hood body 1 is detected, and by determining whether the detected weight parameter meets the preset deviation coefficient, it can be determined whether the installation of the range hood body 1 is correct.

[0063] In this embodiment, the range hood also includes a cooking device 4. An open-front cavity is provided at the front end of the range hood body 1. The cooking device 4 is placed in the cavity so that it moves up and down synchronously with the range hood body 1. That is, the cooking device 4 is preferably placed inside the cavity of the range hood body 1. In this embodiment, the cooking device 4 is preferably any one of a steam oven, oven, steam oven, or microwave oven, so that the range hood integrates multiple functions such as a steam oven, oven, and microwave oven. At the same time, the fan cabinet is placed on the back area of ​​the cavity, and the control panel is placed at the bottom of the cavity.

[0064] Example 2:

[0065] like Figure 4As shown, this embodiment provides a control method for a range hood, which is applied to the lifting structure described in Embodiment 1. Since the lifting components and the range hood body are completely separate and independent as two structural modules, both the lifting components and the range hood body can be installed and maintained separately, making the installation and maintenance of the product simpler. Two lifting components are spaced apart in the horizontal direction of the wall. Fixing parts are respectively provided on the output ends of the two lifting components. Mounting parts are respectively provided on the left and right sides of the rear end of the range hood body. The fixing parts and the mounting parts are connected to detachably mount the range hood body on the output ends of the two lifting components. Then, by the movement of the lifting components, the range hood body moves up or down in the vertical direction relative to the wall. In this way, the installation height of the range hood body can be adjusted so that the wall height of the range hood is adjustable, thereby adapting the range hood to the installation height of the cabinet, and thus achieving a flush-mounted fully concealed installation effect. The method is simple and feasible, and can make the wall height of the range hood adjustable, thereby adapting the range hood to the installation height of the cabinet, and thus achieving a flush-mounted fully concealed installation effect.

[0066] The control method for the range hood in this embodiment includes the following steps:

[0067] Step S101: Connect the mounting part of the range hood body to the fixing part of the lifting assembly.

[0068] In step S102, the weight is detected by the weighing sensors located on the two lifting components to obtain the first weight value and the second weight value of the range hood body respectively.

[0069] Step S103: Compare the deviation between the first weight value and the second weight value with a preset deviation coefficient, and determine whether the range hood body has completed the hanging work based on the comparison result.

[0070] In this embodiment, the step of comparing the deviation between the first weight value and the second weight value with a preset deviation coefficient, and determining whether the range hood body has completed the hanging operation based on the comparison result, includes:

[0071] Determine whether the deviation between the first weight value and the second weight value is less than a preset deviation coefficient;

[0072] If so, it can be concluded that the range hood has completed the installation process.

[0073] If not, it is determined that the range hood body has not completed the hanging work, and an alarm signal will be issued until the hanging work is completed.

[0074] In addition, the deviation between the first weight value and the second weight value is calculated by the following formula: △Q=(Q1-Q2)*100%, where △Q is the deviation between the first weight value and the second weight value, Q1 is the first weight value, and Q2 is the second weight value.

[0075] Step S104: After the range hood body is installed, adjust the installation height of the range hood body according to the set installation height.

[0076] Step S105: After the range hood body is installed, control the raising and lowering of the range hood body during the start-up or shutdown process according to the preset program.

[0077] In this embodiment, after the range hood body is installed, the step of adjusting the installation height of the range hood body according to the set installation height includes:

[0078] The first Hall sensor, the second Hall sensor, the third Hall sensor, and the fourth Hall sensor are arranged sequentially from top to bottom on the movable frame, thereby forming the upper limit height position, the initial installation height position, the preset working height position, and the lower limit height position in sequence.

[0079] After the wall-mounting work is completed, the range hood body is controlled to move upward until the third Hall sensor establishes a connection with the magnetic plate on the fixed frame so that the wall-mounting height of the range hood body is at the initial installation height position;

[0080] Determine if the top wall of the smoke collection hood of the range hood body is flush with the bottom wall of the cabinet; if so, the installation of the range hood body is complete; if not, continue to adjust the installation height of the range hood body until the installation of the range hood body is complete.

[0081] Record the number of motor steps required for the range hood body to rise or fall from the initial installation height to the set installation height.

[0082] In this embodiment, the step of continuing to adjust the installation height of the range hood body until the installation of the range hood body is completed includes:

[0083] Manually adjust the installation height of the range hood body so that the top wall of the range hood's smoke collection hood is flush with the bottom wall of the cabinet.

[0084] Specifically, the installation height of the range hood body is manually adjusted so that the top wall of the smoke collection hood of the range hood body is flush with the bottom wall of the cabinet. The current height position is set as the set installation height position. The number of motor steps required for the range hood body to rise or fall from the initial installation height position to the set installation height position is recorded, thereby completing the assembly of the range hood body.

[0085] More preferably, after the range hood body is installed, the steps for controlling the raising and lowering of the range hood body during startup or shutdown according to a preset program include:

[0086] Start the range hood to exhaust smoke, and the range hood body will descend to the preset working height position;

[0087] After the range hood body is closed, the range hood body rises to the initial installation height position;

[0088] The range hood body is driven to rise or fall to the set installation height position according to the recorded number of motor steps.

[0089] In this embodiment, a first Hall sensor, a second Hall sensor, a third Hall sensor, and a fourth Hall sensor are sequentially arranged at intervals from top to bottom on the fixed frame, thereby forming an upper limit height position, an initial installation height position, a preset working height position, and a lower limit height position. In the vertical direction, the upper limit height position is greater than the initial installation height position, which is greater than the preset working height position, which is greater than the lower limit height position. The upper limit height position is the maximum rising height of the range hood body, the preset working height position is the height position of the range hood body when it is expelling smoke, and the lower limit height position is the maximum falling height of the range hood body. The magnetic sheet is set on the fixed frame. When the drive motor drives the movable frame to move up and down in the vertical direction, the magnetic sheet senses any one of the multiple Hall sensors, thereby controlling the lifting height of the movable frame. Clearly, the range hood's lifting movement is mainly divided into three stages. When the range hood is working to exhaust smoke, it descends to the preset working height. After the range hood is turned off, it rises to the initial installation height or the set installation height. In addition, to facilitate cleaning the interior of the cooking appliance, the range hood also has a cleaning mode. When the user activates the cleaning mode, the range hood can descend to the lower limit height, making it convenient for the user to clean the inside of the cooking appliance. After cleaning is completed, the user can select the power off or normal working mode, and the range hood will automatically rise to the set installation height or the preset working height.

[0090] Because the range hood integrates a steam oven function, the overall weight of the unit is relatively heavy. To prevent the range hood from falling due to improper installation, an installation mode has been added to help the operator judge whether the range hood body is installed correctly. When the installation mode is selected, the user can adjust the range hood body to rise or fall, thus making it easy to adjust the range hood body to a suitable installation height.

[0091] Specifically, since a weighing sensor is installed on each of the left and right sides of the lifting assembly, if the left or right side of the range hood does not contact the weighing sensor, it is determined that the entire unit is not installed correctly. A voice or text message will then indicate that the installation is incomplete. Installation is completed only when both the left and right sides of the range hood contact the weighing sensor and the detected weight parameter meets a preset deviation coefficient. In this embodiment, the preset deviation coefficient is preferably ±40%. If the deviation between the first and second weight values ​​meets the preset deviation coefficient, the range hood can be raised and lowered normally, and it is determined that the range hood has been successfully installed. If the deviation between the first and second weight values ​​does not meet the preset deviation coefficient, it is determined that the lifting assembly is affected by external forces or overload, and a voice prompt will indicate a fault. The control system will then announce that the range hood can be raised and lowered normally once the external force is eliminated or the weight is reduced to the system's set safety range.

[0092] After the range hood is installed, it will automatically rise when powered on for the first time. When the third Hall sensor contacts the magnetic plate, the range hood will stop rising, thus bringing the range hood to its initial installation height.

[0093] Since the initial installation height is a preset fixed value, if the user's cabinets are installed too high or too low, making it difficult for the range hood to be fully flush with the cabinets after installation, the operator can control the range hood to enter installation mode, thereby controlling the range hood to rise or fall. When the range hood rises or falls to the user's desired height, it stops rising or falling, stopping the range hood at the current height position and setting this position as the new installation height. Simultaneously, the number of motor steps required to rise or fall from the initial installation height position to the set installation height position is detected and recorded, and stored in the controller, thus completing the assembly of the range hood.

[0094] When the range hood experiences a power outage and is then restored to power, the system will first restore the range hood to its initial installation height. Then, based on the number of motor movement steps recorded by the system, the system will drive the motor to rise or fall according to the recorded number of motor movement steps to bring the range hood to the set installation height.

[0095] The above descriptions are merely some embodiments of the present invention. Those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A lifting structure for driving the range hood body (1) of a range hood to move up and down, characterized in that, It also includes two lifting components (2), which are respectively installed on the wall. A fixing part (21) is provided on the output end of the lifting component (2). Mounting parts are respectively provided on the left and right sides of the rear end of the range hood body (1). The fixing part (21) is connected with the mounting part so that the range hood body (1) can be detachably installed on the output end of the two lifting components (2). The movement of the lifting components (2) drives the range hood body (1) to move up and down in the vertical direction relative to the wall. The lifting assembly (2) includes a fixed frame (22), a movable frame (23), and a drive motor (24). The fixed frame (22) is mounted on the wall. The movable frame (23) is slidably connected to the fixed frame (22). The drive motor (24) is located at the lower end of the fixed frame (22). A lifting screw (25) is provided on the output end of the drive motor (24). The lifting screw (25) is connected to the upper wall of the movable frame (23) at the end away from the drive motor (24) to drive the movable frame (23) to move vertically. The fixed part (21) is provided on the upper wall of the movable frame (23). The lifting assembly (2) also includes a position sensing module that senses the height of the movable frame (23), and the position sensing module is used to control the lifting movement of the movable frame (23); The position sensing module includes multiple Hall sensors (27) and a magnetic sheet (29), wherein the multiple Hall sensors (27) are respectively arranged at intervals along the vertical direction on the movable frame (23), and the magnetic sheet (29) is arranged on the fixed frame (22). The magnetic sheet (29) is connected with the Hall sensors (27) to control the lifting height of the movable frame (23); It also includes a weighing sensor (3), which is respectively installed on the output end of the two lifting components (2). The weighing sensor (3) is installed at the top position of the rear end of the range hood body (1) to detect the weight of the range hood body (1).

2. The lifting structure according to claim 1, characterized in that, A fixing plate (26) is provided at the upper end of the movable frame (23). A protrusion is provided on the fixing plate (26) to form the fixing part (21). A through hole is provided at the top of the rear end of the smoke machine body (1) to form the mounting part. The protrusion is inserted into the through hole so that the mounting part and the fixing part (21) are connected together.

3. The lifting structure according to claim 1, characterized in that, The lifting assembly (2) further includes a first slide rail and a second slide rail (28), wherein the first slide rail is disposed on the fixed frame (22) and the second slide rail (28) is disposed on the movable frame (23), and the first slide rail and the second slide rail (28) are connected to each other so that the movable frame (23) and the fixed frame (22) are slidably connected together.

4. A range hood, characterized in that, Includes the lifting structure as described in any one of claims 1 to 3.

5. A range hood according to claim 4, characterized in that, It also includes a cooking device (4), which has an open receiving cavity at the front end of the range hood body (1), and the cooking device (4) is disposed in the receiving cavity.

6. A control method for a range hood, characterized in that, Applied to the range hood as described in claim 4 or 5, the control method of the range hood includes the following steps: The mounting part of the range hood body is connected to the fixing part of the lifting assembly; The weight is detected by weighing sensors located on the two lifting components to obtain the first weight value and the second weight value of the smoke hood body respectively. The deviation between the first weight value and the second weight value is compared with a preset deviation coefficient, and the comparison result is used to determine whether the range hood body has completed the hanging work. After the range hood body is installed, adjust the installation height of the range hood body according to the set installation height. After the range hood body is installed, the raising and lowering of the range hood body during the start-up or shutdown process is controlled according to the preset program.

7. The control method for a range hood according to claim 6, characterized in that, After the range hood body is installed, the step of adjusting the installation height of the range hood body according to the set installation height includes: A first Hall sensor, a second Hall sensor, a third Hall sensor, and a fourth Hall sensor are sequentially and intermittently arranged on the movable frame from top to bottom, thereby forming an upper limit height position, an initial installation height position, a preset working height position, and a lower limit height position in sequence; After the hanging work is completed, the range hood body is controlled to move upward until the third Hall sensor establishes a connection with the magnetic plate on the fixing frame so that the hanging height position of the range hood body is at the initial installation height position; Determine whether the top wall of the smoke collection hood of the range hood body is flush with the bottom wall of the cabinet; if so, the installation of the range hood body is completed; if not, continue to adjust the installation height of the range hood body until the installation of the range hood body is completed. Record the number of motor steps required for the range hood body to rise or fall from the initial installation height position to the set installation height position.

8. The control method for a range hood according to claim 7, characterized in that, The step of continuing to adjust the installation height of the range hood body until the installation of the range hood body is completed includes: Manually adjust the installation height of the range hood body so that the top wall of the smoke collection hood body is flush with the bottom wall of the cabinet.

9. The control method for a range hood according to claim 7, characterized in that, After the range hood body is installed, the steps of controlling the raising and lowering of the range hood body during the start-up or shutdown process according to a preset program include: The range hood body is activated to perform smoke extraction, and the range hood body descends to the preset working height position; After the range hood body is closed, the range hood body rises to the initial installation height position; The range hood body is driven to rise or fall to the set installation height position according to the recorded number of motor steps.

10. A control method for a range hood according to claim 6, characterized in that, The step of comparing the deviation between the first weight value and the second weight value with a preset deviation coefficient, and determining whether the range hood body has completed the hanging operation based on the comparison result, includes: Determine whether the deviation between the first weight value and the second weight value is less than the preset deviation coefficient; If so, it can be determined that the range hood body has completed the hanging work; If not, it is determined that the range hood body has not completed the hanging work, and an alarm signal will be issued until the hanging work is completed.

11. The control method for a range hood according to claim 6, characterized in that, The deviation between the first weight value and the second weight value is calculated using the following formula: △Q = (Q1 - Q2) * 100%, where △Q is the deviation between the first weight value and the second weight value, Q1 is the first weight value, and Q2 is the second weight value.

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