Lifting structure, range hood and control method of range hood

Abstract

The invention discloses a lifting structure, a dish washing machine and a control method of the dish washing machine, the lifting structure is used for driving a range hood body of a range hood to do lifting motion, the dish washing machine further comprises two lifting assemblies, the two lifting assemblies are installed on the wall face, fixing parts are arranged at the output ends of the lifting assemblies, and the lifting assemblies are arranged on the wall face. Mounting parts are arranged on the left side and the right side of the rear end of the range hood body correspondingly, and the fixing parts are connected with the mounting parts in a matched mode so that the range hood body can be detachably mounted at the output ends of the two lifting assemblies. And the range hood body is driven to do lifting motion relative to the vertical direction of the wall surface through the action of the lifting assembly. When the range hood is installed, the lifting assembly is firstly fixed on a wall surface, and then the whole range hood is directly hung on the lifting assembly, so that the installation of the range hood can be rapidly completed.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a lifting structure, a range hood and a control method thereof. Background Art

[0002] As users have higher and higher requirements for the utilization of kitchen space, traditional range hoods, as appliances with high frequency of use and large size in the kitchen, have disadvantages such as occupying a large kitchen space, low functional integration, and unsightly appearance. Young consumer groups are increasingly considering embedded installation and integrated products when purchasing range hoods. At present, some fully hidden lift range hoods have appeared on the market, with complex lifting structures and functions limited to smoke exhaust. Due to the installation height error, it is difficult to make the range hood and the cabinet completely flush after hanging, which affects the overall aesthetics of the kitchen. Summary of the invention

[0003] The present invention aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the present invention proposes a lifting structure with a simple 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, so that the installation of the range hood can be quickly completed.

[0004] Secondly, the present invention also proposes a range hood, which has a simple structure and 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 can make the hanging height position of the range hood adjustable, so that the range hood can be adapted to the installation height of the cabinet, thereby achieving a flush-embedded fully concealed installation effect.

[0006] The first objective is achieved through the following technical solutions:

[0007] A lifting structure is used to drive the range hood body of the range hood to perform lifting movement, and also includes two lifting components. The two lifting components are respectively installed on the wall, and 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 is cooperatively connected with the mounting part so that the range hood body can be detachably installed on the output ends of the two lifting components. The range hood body is driven to perform lifting movement in the vertical direction relative to the wall through the action of the lifting components.

[0008] In some embodiments, the lifting assembly includes a fixed frame, a movable frame and a driving motor, wherein the fixed frame is mounted on the wall, the movable frame is slidably connected to the fixed frame, the driving motor is arranged at the lower end position of the fixed frame, and a lifting screw rod is arranged on the output end of the driving motor, the lifting screw rod is connected to the upper end wall of the movable frame at an end away from the driving motor to drive the movable frame to perform lifting and lowering movements in the vertical direction, and the fixed portion is arranged on the upper end wall of the movable frame.

[0009] In some embodiments, the lifting assembly further includes a position sensing module for sensing the height of the movable frame, and the lifting movement of the movable frame is controlled by the position sensing module.

[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 on the movable frame at intervals along the vertical direction, the magnetic sheet is arranged on the fixed frame, and the magnetic sheet is cooperatively connected 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, a protrusion is provided upwardly on the fixing plate to form the fixing portion, a through hole is provided at the top position of the rear end of the range hood body to form the mounting portion, and the protrusion is inserted into the through hole so that the mounting portion and the fixing portion are matched and 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 is cooperatively connected with the second slide rail so that the movable frame and the fixed frame are slidably connected together.

[0013] In some embodiments, a weighing sensor is further included. The weighing sensor is respectively arranged on the output ends of the two lifting assemblies. The weighing sensor is arranged 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 above second purpose is achieved through the following technical solutions:

[0015] A range hood comprises the range hood as described in any one of the above embodiments.

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

[0017] The third objective is achieved through the following technical solutions:

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

[0019] Connecting the mounting portion of the range hood body to the fixing portion of the lifting assembly;

[0020] The weight is detected by weighing sensors located on the two lifting assemblies to obtain a first weight value and a second weight value of the range hood body respectively;

[0021] 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 according to the comparison result;

[0022] After the range hood body has completed the hanging work, the installation height of the range hood body is adjusted according to the set installation height;

[0023] After the range hood body is installed, the lifting and lowering of the range hood body during startup or shutdown is controlled according to a preset program.

[0024] In some embodiments, after the range hood body completes the hanging operation, the step of adjusting the installation height of the range hood body according to the set installation height includes:

[0025] A first Hall sensor, a second Hall sensor, a third Hall sensor, and a fourth Hall sensor are pre-arranged on the movable frame from top to bottom in sequence, so as to form 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 operation is completed, the range hood body is controlled to move upward until the third Hall sensor is connected to the magnetic sheet 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 hood of the range hood body is flush with the lower end wall of the cabinet; if so, complete the installation of the range hood body; if not, continue to adjust the installation height of the range hood body until the installation of the range hood body is completed;

[0028] The number of motor steps used when the range hood body rises or falls from the initial installation height position to the set installation height position is recorded.

[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] The installation height of the range hood body is manually adjusted so that the top wall of the smoke collecting hood of the range hood body is flush with the lower end wall of the cabinet.

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

[0032] The range hood body is started to perform smoke exhaust work, and the range hood body is lowered 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 value 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 according to the comparison result comprises:

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

[0037] If yes, it is 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 on-hook operation, and an alarm signal is issued until the on-hook operation is completed.

[0039] In some embodiments, the deviation between the first weight value and the second weight value is calculated by the following calculation formula: △Q=(Q1-Q2)*100%, wherein △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 has a simple structure. During installation, the lifting assembly is first fixed on the wall, and then the entire range hood is directly hung on the lifting assembly, thereby quickly completing the installation of the range hood.

[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 that the range hood can be adapted to the installation height of the cabinet, thereby achieving a flush-embedded and fully concealed installation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0046] Figure 2 is a first structural schematic diagram of the lifting structure in the first embodiment of the present invention;

[0047] Figure 3 is a second structural schematic diagram of the lifting structure in the first embodiment of the present invention;

[0048] Figure 4 It is a flow chart of the dishwasher control method in the second embodiment of the present invention. DETAILED DESCRIPTION

[0049] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in combination with the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, but not all of the embodiments. The components of the embodiment of the present invention can be arranged and designed in various different configurations.

[0050] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the technical solution claimed for protection of the present invention.

[0051] Embodiment 1:

[0052] like Figures 1 to 3As shown, this embodiment provides a lifting structure for driving the range hood body 1 of the range hood to perform lifting motion, and also includes two lifting components 2, the two lifting components 2 are respectively mounted on the wall, and a fixing portion 21 is provided on the output end of the lifting component 2, and mounting portions are respectively provided on the left and right sides of the rear end of the range hood body 1, the fixing portion 21 is cooperatively connected with the mounting portion so that the range hood body 1 can be detachably mounted on the output ends of the two lifting components 2, and the range hood body 1 is driven to perform lifting motion in the vertical direction relative to the wall through the action of the lifting components 2.

[0053] In the present embodiment, since the lifting structure is preferably applied to the range hood, the lifting structure is suitable for driving the range hood body 1 of the range hood to perform lifting and lowering movements. Two lifting components 2 are arranged at intervals in the lateral direction of the wall, and fixing parts 21 are respectively arranged on the output ends of the two lifting components 2, and mounting parts are respectively arranged on the left and right sides of the rear end of the range hood body 1. The fixing parts 21 are cooperated and connected with the mounting parts so that the range hood body 1 can be detachably mounted on the output ends of the two lifting components 2, and then the range hood body 1 can be moved up or down relative to the vertical direction of the wall through the action of the lifting components 2. In this way, the installation height position of the range hood body 1 can be adjusted so that the hanging height position of the range hood is adjustable, so that the range hood is adapted to the installation height of the cabinet, thereby achieving a flush-embedded fully hidden installation effect. The structure is simple. During installation, the lifting component 2 is first fixed to 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 quickly completed.

[0054] Furthermore, the lifting assembly 2 includes a fixed frame 22, a movable frame 23 and a driving motor 24, wherein the fixed frame 22 is installed on the wall, the movable frame 23 is slidably connected to the fixed frame 22, the driving motor 24 is arranged at the lower end position of the fixed frame 22, and a lifting screw rod 25 is arranged on the output end of the driving motor 24. The lifting screw rod 25 is connected to the upper end wall of the movable frame 23 at one end away from the driving motor 24 to drive the movable frame 23 to perform lifting and lowering movements in the vertical direction. A fixing portion 21 is arranged on the upper end wall of the movable frame 23.

[0055] Preferably, the lifting assembly 2 further comprises a position sensing module for sensing the height of the movable frame 23 , and the lifting movement of the movable frame 23 is controlled by the position sensing module.

[0056] Specifically, the position sensing module includes multiple Hall sensors 27 and magnetic sheets 29, wherein the multiple Hall sensors 27 are arranged on the movable frame 23 at intervals along the vertical direction, 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, a protrusion is provided upwardly on the fixing plate 26 to form a fixing portion 21, a through hole is opened at the top position of the rear end of the range hood body 1 to form a mounting portion, and the protrusion is inserted into the through hole so that the mounting portion and the fixing portion 21 are matched and 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 arranged on the fixed frame 22, and the second slide rail 28 is arranged on the movable frame 23, and the first slide rail and the second slide rail 28 are cooperatively connected 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 arranged at the output ends of the two lifting assemblies 2 . The weighing sensor 3 is arranged corresponding to the top position of the rear end of the range hood body 1 to detect the weight of the range hood body 1 .

[0060] The movable frame 23 is arranged on the range hood body 1, and a first slide rail is arranged on the movable frame 23, and a second slide rail 28 is arranged on the fixed frame 22. The first slide rail and the second slide rail 28 are connected with each other so that the movable frame 23 and the fixed frame 22 can be slidably connected together. The driving motor 24 is installed at the lower end position of the fixed frame 22, and the lower end of the lifting screw rod 25 is connected to the output end of the driving motor 24, and the upper end of the lifting screw rod 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 separated and independently formed into two structural modules, the lifting assembly 2 and the range hood body 1 can be installed and maintained separately, thereby making the installation and maintenance of the product easier. In addition, 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 from bottom to top to form a fixing portion 21, and a through hole is provided at the top position of the rear end of the range hood body 1 to form a mounting portion, and the range hood body 1 is driven by external force to move downward from top to bottom until the protrusion is inserted into the through hole so that the mounting portion and the fixing portion 21 are matched and connected together, so that the range hood body 1 and the lifting assembly 2 can be detachably assembled together. Furthermore, in order to prevent the range hood from accidentally falling off, a limit plate is provided on the top of the movable frame 23, the lower side of the limit plate is provided on the moving plate, and the other side is fixedly connected to the top plate of the range hood box by screws, so as to prevent the mounting portion of the range hood body 1 from falling off from the fixing portion 21 of the lifting assembly 2, thereby effectively improving the stability of product installation.

[0061] Preferably, a plurality of Hall sensors 27 are arranged at intervals along the vertical direction on the fixed frame 22, and the number of the Hall sensors 27 is specifically 4, but the above number is not limited, and other more suitable numbers can be selected according to actual needs. When the number of the Hall sensors 27 is specifically 4, that is, the first Hall sensor, the second Hall sensor, the third Hall sensor, and the fourth Hall sensor are arranged at intervals from top to bottom on the fixed frame 22, so that an upper limit height position, an initial installation height position, a preset working height position, and a lower limit height position are formed in sequence. Since in the vertical direction, the upper limit height position is greater than the initial installation height position, greater than the preset working height position, and greater than the lower limit height position, wherein 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 descending height of the range hood body 1, and the magnetic sheet 29 is arranged on the fixed frame 22. When the driving motor 24 drives the movable frame 23 to move up and down in the vertical direction, when the magnetic sheet 29 and any one of the plurality of Hall sensors sense each other, the lifting height of the movable frame 23 is controlled.

[0062] In the present embodiment, in order to prevent the range hood from falling due to improper installation, weighing sensors 3 are respectively provided on the output ends of the two lifting assemblies 2, so that the number of weighing sensors 3 is preferably two, and the weighing sensors 3 are arranged corresponding to the top position of the rear end of the range hood body 1. By detecting that the left side or the right side of the range hood does not contact the weighing sensor 3, it is determined that the whole machine is not installed in place, and then a voice or text message is used to prompt that the installation is not completed, until the left side or the right side of the range hood contacts the weighing sensor, and when it is detected that the weight parameter meets the preset deviation coefficient, it is prompted that the installation is completed, and then the weight of the range hood body 1 is detected. By judging whether the detected weight parameter meets the preset deviation coefficient, it can be judged whether the range hood body 1 is installed in place.

[0063] In the present embodiment, the range hood further comprises a cooking device 4, and a accommodating cavity with an open front end is provided at the front end position of the hood body 1. The cooking device 4 is arranged in the accommodating cavity so that the cooking device 4 moves up and down synchronously with the hood body 1, that is, the cooking device 4 is preferably arranged in the box of the hood body 1. In the present embodiment, the cooking device 4 is preferably any one of a steamer, an oven, a steam oven or a microwave oven, so that the range hood integrates multiple functions such as a steamer, an oven, and a microwave oven. At the same time, the wind cabinet is arranged on the back area of ​​the accommodating cavity, and the operation panel is arranged at the lower position of the accommodating cavity.

[0064] Embodiment 2:

[0065] like Figure 4As shown, the present embodiment provides a control method for a range hood, which is applied to the lifting structure described in the first embodiment. Since the lifting assembly and the range hood body are completely separated and independently formed into two structural modules, the lifting assembly and the range hood body can be separately installed and maintained, thereby making the installation and maintenance of the product easier. Two lifting assemblies are arranged at intervals in the transverse direction of the wall, and fixing parts are respectively arranged on the output ends of the two lifting assemblies, and mounting parts are respectively arranged on the left and right sides of the rear end of the range hood body. The fixing parts and the mounting parts are connected in cooperation so that the range hood body can be detachably mounted on the output ends of the two lifting assemblies, and then the range hood body is moved up or down relative to the vertical direction of the wall through the action of the lifting assembly. In this way, the installation height position of the range hood body can be adjusted so that the hanging height position of the range hood is adjustable, so that the range hood is adapted to the installation height of the cabinet, thereby achieving a flush-embedded fully concealed installation effect. The method is simple and feasible, and the hanging height position of the range hood can be adjusted, so that the range hood is adapted to the installation height of the cabinet, thereby achieving a flush-embedded fully concealed installation effect.

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

[0067] Step S101, connecting the mounting portion of the range hood body and the fixing portion of the lifting assembly together.

[0068] Step S102, detecting the weight by means of weighing sensors located on the two lifting assemblies to obtain a first weight value and a second weight value of the range hood body respectively.

[0069] Step S103, comparing the deviation between the first weight value and the second weight value with a preset deviation coefficient, and determining whether the current range hood body has completed the on-hook operation based on the comparison result.

[0070] In this embodiment, the steps of comparing the deviation value between the first weight value and the second weight value with the preset deviation coefficient and determining whether the current range hood body has completed the hanging operation according to the comparison result include:

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

[0072] If so, it is determined that the current range hood body has completed the hanging work;

[0073] If not, it is determined that the current range hood body has not completed the hanging work, and an alarm signal is 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 calculation 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 has completed the hanging operation, the installation height of the range hood body is adjusted according to the set installation height;

[0076] Step S105, after the range hood body is installed, the lifting and lowering of the range hood body during startup or shutdown is controlled according to a preset program.

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

[0078] A first Hall sensor, a second Hall sensor, a third Hall sensor, and a fourth Hall sensor are pre-arranged on the movable frame from top to bottom in sequence, 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;

[0079] After the hanging work is completed, the range hood body is controlled to move upward until the third Hall sensor is connected to the magnetic sheet on the fixing frame so that the hanging height position of the range hood body is at the initial installation height position;

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

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

[0082] In this embodiment, the steps of continuously adjusting the installation height of the range hood body until the installation of the range hood body is completed include:

[0083] The installation height of the range hood body is manually adjusted so that the top wall of the smoke collecting hood of the range hood body is flush with the lower end 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 hood of the range hood body is flush with the lower end wall of the cabinet, the current height position is set to the set installation height position, and the number of motor steps used 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] Preferably, after the range hood body is installed, the step of controlling the lifting and lowering of the range hood body during startup or shutdown according to a preset program includes:

[0086] Start the smoke exhaust machine body to start the smoke exhaust work, and the smoke exhaust machine body will be lowered to the preset working height position;

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

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

[0089] In this embodiment, since the first Hall sensor, the second Hall sensor, the third Hall sensor, and the fourth Hall sensor are sequentially arranged from top to bottom on the fixed frame, an upper limit height position, an initial installation height position, a preset working height position, and a lower limit height position are formed in sequence. Since in the vertical direction, the upper limit height position is greater than the initial installation height position, greater than the preset working height position, and 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 exhausting smoke outward, and the lower limit height position is the maximum descending height of the range hood body. The magnetic sheet is arranged on the fixed frame. When the driving motor drives the movable frame to move up and down in the vertical direction, the magnetic sheet and any one of the multiple Hall sensors sense each other, thereby controlling the lifting height of the movable frame. Obviously, the lifting movement of the range hood is mainly divided into three stages. When the range hood body is performing smoke exhaust work, the range hood body descends to the preset working height position. After the range hood is turned off, the range hood body rises to the initial installation height position or the set installation height position. In addition, to facilitate the cleaning of the inner cavity of the cooking device, the range hood body also has a cleaning mode. When the user starts the cleaning mode, the range hood body can descend to the lower limit height position, thereby facilitating the user to clean the inside of the cooking device. After the cleaning work is completed, select the shutdown or normal working mode, and the range hood body automatically rises to the set installation height position or the preset working height position.

[0090] Because the range hood integrates the function of a steam oven, the weight of the whole machine is heavy. In order to prevent the range hood from falling due to improper installation, an installation mode is added to help the operator judge whether the range hood body is installed in place. After selecting the installation mode, the user can adjust the range hood body to rise or fall, so as to facilitate adjusting the range hood body to a suitable installation height.

[0091] Specifically, since a weighing sensor is respectively arranged on the left and right sides of the lifting assembly, when the left or right side of the range hood does not contact the weighing sensor, it is determined that the whole machine is not installed in place, and then a voice or text message prompts that the installation is not completed, until the left or right side of the range hood contacts the weighing sensor, and when it is detected that the weight parameter meets the preset deviation coefficient, the installation is completed. In this embodiment, the preset deviation coefficient is preferably ±40%. If the deviation value between the first weight value and the second weight value meets the preset deviation coefficient, the range hood body can be lifted normally, and it is determined that the current range hood body has completed the hanging work; if the deviation value between the first weight value and the second weight value does not meet the preset deviation coefficient, it is determined that the lifting assembly is partially disturbed by external force factors or overweight, and a voice prompt is given for a fault, until the external force is eliminated or the weight is reduced to the safe range set by the system, the control system voice prompts that the range hood can be lifted normally.

[0092] After the range hood body completes the hanging work, when the power is turned on for the first time, the range hood body automatically rises, and when the third Hall sensor contacts and senses the magnetic sheet, the range hood body stops rising, so that the hanging height of the range hood body reaches the initial installation height position.

[0093] Since the initial installation height position is a preset fixed value, if the cabinets in the user's home are installed too high or too low, making it difficult for the range hood body to be flush with the cabinets and fully hidden after installation, the operator can control the range hood body to enter the installation mode, thereby controlling the range hood body to move up or down. When the range hood body rises or falls to the height desired by the user, it is selected to stop rising or falling so that the range hood body stays at the current height position, and the position is set as the new installation height position, that is, the position is set to the set installation height position, and at the same time, the motor movement steps used by the drive motor to rise or fall from the initial installation height position to the set installation height position are detected and recorded, and the movement steps are stored in the controller, thereby completing the assembly of the range hood body.

[0094] When the range hood body is powered on again after a power outage, the system will first restore the installation height of the range hood body to the initial installation height position, and then drive the motor to rise or fall according to the recorded number of motor movement steps based on the number of motor movement steps stored in the system to make the range hood body reach the set installation height position.

[0095] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A lifting structure, used for driving the range hood body (1) of the range hood to perform lifting motion, characterized in that: It also comprises two lifting assemblies (2), the two lifting assemblies (2) are respectively mounted on the wall, and a fixing part (21) is arranged on the output end of the lifting assemblies (2), and mounting parts are respectively arranged on the left and right sides of the rear end of the range hood body (1), the fixing part (21) is matched and connected with the mounting part so that the range hood body (1) can be detachably mounted on the output ends of the two lifting assemblies (2), and the action of the lifting assemblies (2) drives the range hood body (1) to perform lifting movement in the vertical direction relative to the wall.

2. A lifting structure according to claim 1, characterized in that: The lifting assembly (2) comprises a fixed frame (22), a movable frame (23) and a driving motor (24), wherein the fixed frame (22) is mounted on the wall, the movable frame (23) and the fixed frame (22) are slidably connected together, the driving motor (24) is arranged at the lower end of the fixed frame (22), a lifting screw rod (25) is arranged on the output end of the driving motor (24), and the lifting screw rod (25) is connected to the upper end wall of the movable frame (23) at one end away from the driving motor (24) to drive the movable frame (23) to move up and down in the vertical direction, and the fixing portion (21) is arranged on the upper end wall of the movable frame (23).

3. A lifting structure according to claim 2, characterized in that: The lifting assembly (2) further comprises a position sensing module for sensing the height of the movable frame (23), and the lifting movement of the movable frame (23) is controlled by the position sensing module.

4. A lifting structure according to claim 3, characterized in that: The position sensing module comprises a plurality of Hall sensors (27) and a magnetic sheet (29), wherein the plurality of Hall sensors (27) are arranged on the movable frame (23) at intervals along the vertical direction, the magnetic sheet (29) is arranged on the fixed frame (22), and the magnetic sheet (29) is connected to the Hall sensor (27) to control the lifting height of the movable frame (23).

5. A lifting structure according to claim 2, 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 portion (21), a through hole is provided at the top position of the rear end of the range hood body (1) to form the mounting portion, the protrusion is inserted into the through hole so that the mounting portion and the fixing portion (21) are matched and connected together.

6. A lifting structure according to claim 2, characterized in that: The lifting assembly (2) further comprises a first slide rail and a second slide rail (28), wherein the first slide rail is arranged on the fixed frame (22), and the second slide rail (28) is arranged on the movable frame (23), and the first slide rail and the second slide rail (28) are cooperatively connected so that the movable frame (23) and the fixed frame (22) are slidably connected together.

7. A lifting structure according to claim 1, characterized in that: It also includes a weighing sensor (3), which is respectively arranged on the output ends of the two lifting assemblies (2). The weighing sensor (3) is arranged corresponding to the top position of the rear end of the range hood body (1) to detect the weight of the range hood body (1).

8. A range hood, characterized in that: It comprises a range hood as claimed in any one of claims 1 to 6.

9. The range hood according to claim 8, characterized in that: It also comprises a cooking device (4); a accommodating cavity with an open front end is provided at the front end of the range hood body (1); and the cooking device (4) is arranged in the accommodating cavity.

10. A control method for a range hood, characterized in that: Applied to the range hood according to claim 8 or 9, the control method of the range hood comprises the following steps: Connecting the mounting portion of the range hood body to the fixing portion of the lifting assembly; The weight is detected by weighing sensors located on the two lifting assemblies to obtain a first weight value and a second weight value of the range hood body respectively; 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 according to the comparison result; After the range hood body has completed the hanging work, the installation height of the range hood body is adjusted according to the set installation height; After the range hood body is installed, the lifting and lowering of the range hood body during startup or shutdown is controlled according to a preset program.

11. The control method of a range hood according to claim 10, characterized in that: After the range hood body has completed the hanging operation, the step of adjusting the installation height of the range hood body according to the set installation height comprises: A first Hall sensor, a second Hall sensor, a third Hall sensor, and a fourth Hall sensor are pre-arranged on the movable frame from top to bottom in sequence, so as to form 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 operation is completed, the range hood body is controlled to move upward until the third Hall sensor is connected to the magnetic sheet 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 hood of the range hood body is flush with the lower end wall of the cabinet; if so, complete the installation of the range hood body; if not, continue to adjust the installation height of the range hood body until the installation of the range hood body is completed; The number of motor steps used when the range hood body rises or falls from the initial installation height position to the set installation height position is recorded.

12. The control method of a range hood according to claim 11, characterized in that: The step of continuously adjusting the installation height of the range hood body until the installation of the range hood body is completed comprises: The installation height of the range hood body is manually adjusted so that the top wall of the smoke collecting hood of the range hood body is flush with the lower end wall of the cabinet.

13. The control method of a range hood according to claim 11, characterized in that: After the range hood body is installed, the step of controlling the lifting and lowering of the range hood body during startup or shutdown according to a preset program includes: The range hood body is started to perform smoke exhaust work, and the range hood body is lowered 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.

14. The control method of a range hood according to claim 10, characterized in that: The step of comparing the deviation value 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 according to the comparison result comprises: Determining whether a deviation between the first weight value and the second weight value is less than the preset deviation coefficient; If yes, it is 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 on-hook operation, and an alarm signal is issued until the on-hook operation is completed.

15. The lifting structure according to claim 10, characterized in that: The deviation between the first weight value and the second weight value is calculated by the following calculation formula: △Q=(Q1-Q2)*100%, wherein △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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