Range hood capable of adjusting air volume

Abstract

The invention relates to the technical field of range hoods, in particular to an air volume adjustable range hood, which comprises: a shell, which is internally provided with a smoke collection cavity and is provided with an air outlet at the top; the exhaust fume collecting hood is arranged at the front end of the shell, a left air inlet and a right air inlet are formed in the exhaust fume collecting hood, and the left air inlet and the right air inlet are both communicated with the air outlet; the air distribution structure is arranged at the rear end of the exhaust fume collecting hood and located between the left air inlet and the right air inlet so as to divide the exhaust fume collecting cavity into a left exhaust fume collecting cavity and a right exhaust fume collecting cavity; the air volume distribution structure comprises an air guide plate and a driving assembly for driving the air guide plate. The air deflector is provided with an initial position and is driven by the driving assembly to move relative to the left smoke collecting cavity and the right smoke collecting cavity so as to increase or decrease the opening area of the left smoke collecting cavity and the right smoke collecting cavity corresponding to the air outlet. Compared with the prior art, lampblack is prevented from diffusing towards the direction of the unused furnace end from the source, the smoke leakage phenomenon is further avoided, and finally the cleanliness of the kitchen environment is guaranteed.

Description

Technical Field

[0001] This application relates to the field of range hood technology, and more particularly to a range hood with adjustable airflow. Background Technology

[0002] Household range hoods are an indispensable appliance in modern kitchens. Their core function is to use a power unit to generate suction to expel pollutants such as fumes and odors produced during cooking, thereby maintaining clean air inside the kitchen and providing users with a comfortable cooking environment.

[0003] Existing range hoods generally adopt a unified air intake design. Their working principle is to collect oil fumes through the air inlet on the fume collection hood. After the oil fumes enter the fume collection chamber behind the fume collection hood, they flow along the preset airflow channel under the negative pressure of the fan, and are finally discharged to the outside through the air outlet at the top of the casing, thereby realizing the extraction and discharge of oil fumes.

[0004] However, this traditional unified air intake structure has obvious technical limitations: when a user only uses one burner for cooking, the air intake corresponding to the unused burner on the other side remains open. This not only causes the range hood's suction power to be dispersed and unable to concentrate on the cooking area that produces fumes, but also easily creates air convection between the two air intakes, causing the cooking fumes to spread towards the unused burner, resulting in smoke leakage and ultimately affecting the efficiency of fume extraction and the cleanliness of the kitchen environment. Summary of the Invention

[0005] This application provides an adjustable airflow range hood to solve the technical problems of existing technologies that cannot concentrate the airflow on the cooking area where oil fumes are generated, and that air convection is easily formed between the two air inlets, causing the cooking fumes to spread towards the unused burner, resulting in smoke leakage and ultimately affecting the efficiency of oil fume extraction and the cleanliness of the kitchen environment.

[0006] This application discloses an adjustable airflow range hood, comprising: The casing has a smoke collection chamber inside and an air outlet at the top. A smoke hood is provided at the front end of the housing. The smoke hood has a left air inlet and a right air inlet, both of which are connected to the air outlet. An airflow distribution structure is provided at the rear end of the smoke hood and between the left air inlet and the right air inlet to divide the smoke collection chamber into a left smoke collection chamber and a right smoke collection chamber. The air volume distribution structure includes an air guide plate and a drive assembly for driving the air guide plate; The air guide plate has an initial position and is driven by the drive assembly to move relative to the left smoke collection chamber and the right smoke collection chamber, so as to increase or decrease the opening area of ​​the left smoke collection chamber and the right smoke collection chamber corresponding to the air outlet.

[0007] Furthermore, a reinforcing plate is provided on the rear inner wall of the housing, the reinforcing plate is fixedly connected to the drive assembly, and partitions are provided on both sides of the reinforcing plate, the two partitions forming the left smoke collection chamber and the right smoke collection chamber with the left and right inner walls of the housing respectively.

[0008] Furthermore, the drive assembly includes a drive motor and a motor housing; The drive motor is located inside the motor box, which is fixedly mounted on the reinforcing plate. The drive shaft of the drive motor protrudes through the surface of the motor box. A rotating shaft is fixedly provided at the drive end of the drive shaft, and a bracket is provided at the other end of the rotating shaft. The rotating shaft is rotatably connected to the bracket, and the bracket is fixedly connected to the smoke hood. The air guide plate is fixedly connected to the middle of the rotating shaft.

[0009] Furthermore, the surface of the motor box is also provided with a micro switch, a first limiting part and a second limiting part. The micro switch has a switch contact on its top. The first limiting part and the second limiting part are both located above the switch contact and form a limiting space with the three as the boundary. A switch pressure plate is provided in the limiting space. The switch pressure plate is fixedly connected to the drive shaft. The drive motor drives the switch pressure plate to move within the limiting space.

[0010] Furthermore, a left baffle is provided at the top corner of the left smoke collection chamber, and a right baffle is provided at the top corner of the right smoke collection chamber. The two ends of the left baffle are fixedly connected to the inner wall of the top corner of the left smoke collection chamber, and the plate surface of the left baffle is arranged at an inclined angle to the two top corner walls of the left smoke collection chamber, together forming a closed triangular structure. The two ends of the right baffle are fixedly connected to the inner wall of the top corner of the right smoke collection chamber, and the surface of the right baffle and the two top corner walls of the right smoke collection chamber are arranged at an inclined angle to form a closed triangular structure.

[0011] Furthermore, it also includes a housing assembly, which is located on the top of the housing. The housing assembly includes a housing and a fan, with the fan located inside the housing and the bottom of the housing communicating with the air outlet.

[0012] Furthermore, both the left and right smoke collection chambers are equipped with sensing components, which include an oil fume concentration probe and a temperature probe.

[0013] Furthermore, an electrical box is provided above the housing assembly, and a controller is provided inside the electrical box. The controller is electrically connected to the micro switch, the drive motor, and the sensing component.

[0014] Furthermore, the front end of the housing is also provided with a switch glass assembly and an oil-guiding glass assembly. The switch glass assembly is located above the oil-guiding glass assembly. The switch glass assembly is hinged to the housing, and the oil-guiding glass assembly is fixedly connected to the housing.

[0015] Furthermore, the housing is also provided with a flip-plate mechanism. The fixed end of the flip-plate mechanism is connected to the inner wall of the housing, and the driving end of the flip-plate mechanism is connected to the switch glass assembly to drive the switch glass assembly to open or close.

[0016] The technical solutions provided in this application have the following advantages compared with the prior art: This application incorporates an airflow distribution structure between the left and right air inlets. The included air guide plate can move relative to the left and right smoke collection chambers under the drive of the drive component. In its initial position, it can meet the air intake requirements when both burners are used simultaneously. When only one burner is used, the air guide plate can reduce or even close the opening area of ​​the corresponding air outlet of the unused smoke collection chamber. This prevents the suction from being dispersed to the unused area, allowing the suction to be concentrated on the cooking area that generates oil fumes, effectively improving the oil fume extraction efficiency. It also blocks the air convection path between the two air inlets, preventing oil fumes from spreading to the unused burner from the source, thereby avoiding smoke leakage and ultimately ensuring the cleanliness of the kitchen environment. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0020] Figure 1 This is a schematic diagram of the structure of an adjustable airflow range hood provided in an embodiment of this application; Figure 2 for Figure 1 A schematic diagram of the central switch glass assembly in the open state; Figure 3 for Figure 1 A schematic diagram of the side view structure; Figure 4 for Figure 1 A schematic diagram of the rear-view right-opening structure; Figure 5 for Figure 1 A schematic diagram of the structure with the rear view opening to the left; Figure 6 for Figure 1 A schematic diagram of the initial state of the medium-volume distribution mechanism; Figure 7 for Figure 1 A schematic diagram of the right-opening configuration of the air volume distribution mechanism; Figure 8 for Figure 1 A schematic diagram of the left-open state of the air volume distribution mechanism; Figure 9 for Figure 1 The exploded diagram.

[0021] Explanation of reference numerals in the attached figures: 1. Housing; 11. Left smoke collection chamber; 12. Right smoke collection chamber; 13. Air outlet; 2. Enclosure assembly; 21. Enclosure; 22. Fan; 3. Smoke hood; 31. Left air inlet; 32. Right air inlet; 4. Switch glass assembly; 41. Switch glass; 42. Hinge; 5. Oil-guiding glass assembly; 51. Oil-guiding glass; 52. Oil-guiding glass adhesive plate; 6. Flip-over mechanism; 7. Airflow distribution structure; 71. Drive assembly; 711. Drive motor; 712. Motor box; 7121. Micro switch; 7122. First limiting part; 7123. Second limiting part; 7124. Switch contact; 7125. Limiting space; 72. Rotating shaft; 73. Bracket; 74. Air guide plate; 75. Reinforcing plate; 76. Partition plate; 77. Switch pressure plate; 78. Left baffle; 79. Right baffle; 8. Oil cup; 9. Electrical box. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0024] For ease of description, spatial relative terms may be used in the text to describe the relative positional relationship or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or movement change, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0025] To address the technical problems of existing technologies failing to concentrate suction on the cooking area that generates fumes, and the tendency for air convection to form between the two air inlets, causing cooking fumes to diffuse towards unused burners and resulting in smoke leakage, ultimately affecting fume extraction efficiency and kitchen cleanliness, this application proposes an airflow distribution structure 7 between the left air inlet 31 and the right air inlet 32. The air guide plate 74 included in this structure can move relative to the left and right smoke collection chambers 12 under the drive of the drive component 71. In its initial position, it can meet the air intake requirements when both burners are used simultaneously. When only one burner is used, the air guide plate 74 can reduce or even close the opening area of ​​the corresponding air outlet 13 in the unused smoke collection chamber. This prevents suction from dispersing to unused areas, concentrating suction on the cooking area that generates fumes, effectively improving fume extraction efficiency. It also blocks the air convection path between the two air inlets, preventing fumes from diffusing towards unused burners at the source, thus avoiding smoke leakage and ultimately ensuring the cleanliness of the kitchen environment.

[0026] Please see Figures 1 to 9 This application proposes an adjustable airflow range hood, comprising: a housing 1, a smoke collection hood 3, and an airflow distribution structure 7. The housing 1 has a smoke collection chamber inside, and an air outlet 13 is provided at the top of the housing 1. The smoke collection hood 3 is located at the front end of the housing 1, and has a left air inlet 31 and a right air inlet 32, both of which are connected to the air outlet 13. The airflow distribution structure 7 is located at the rear end of the smoke collection hood 3 and between the left air inlet 31 and the right air inlet 32, to divide the smoke collection chamber into a left smoke collection chamber 11 and a right smoke collection chamber 12. The airflow distribution structure 7 includes a guide plate 74 and a drive assembly 71 for driving the guide plate 74. The guide plate 74 has an initial position and is driven by the drive assembly 71 to move relative to the left smoke collection chamber 11 and the right smoke collection chamber 12, so as to increase or decrease the opening area of ​​the corresponding air outlet 13 of the left smoke collection chamber 11 and the right smoke collection chamber 12.

[0027] Specifically, in this embodiment, when the range hood is in its initial state, the air guide plate 74 is located at a preset position between the left air inlet 31 and the right air inlet 32. The opening areas of the corresponding air outlets 13 of the left smoke collection chamber 11 and the right smoke collection chamber 12 are consistent, adapting to the scenario where both burners are used simultaneously. The fumes enter the corresponding smoke collection chambers through the left and right air inlets 32 and are finally discharged through the air outlets 13. When only one burner is used, the drive assembly 71 drives the air guide plate 74 to move relative to the left smoke collection chamber 11 or the right smoke collection chamber 12, reducing the opening area of ​​the corresponding air outlet 13 of the unused side smoke collection chamber and increasing the opening area of ​​the corresponding air outlet 13 of the used side smoke collection chamber. When switching to use both burners, the drive assembly 71 drives the air guide plate 74 to return to its initial position, thereby restoring the normal opening state of the left and right smoke collection chambers 12. The airflow distribution mechanism in this embodiment can flexibly adapt to the needs of using single or double burners, and achieve precise airflow adjustment. At the same time, when using a single burner, the suction power can be concentrated to improve the efficiency of fume extraction, reduce airflow interference caused by the air intake on the unused side, avoid fume diffusion, and balance the flexibility of use with the smoke extraction effect.

[0028] like Figure 5-8 As shown, a reinforcing plate 75 is provided on the rear inner wall of the housing 1. The reinforcing plate 75 is fixedly connected to the drive assembly 71. Partitions 76 are provided on both sides of the reinforcing plate 75. The two partitions 76 form the left smoke collection chamber 11 and the right smoke collection chamber 12 with the left and right inner walls of the housing 1, respectively.

[0029] Specifically, a reinforcing plate 75 is fixedly installed on the inner rear wall of the housing 1, and the drive assembly 71 is securely connected to the reinforcing plate 75 to ensure the stability of the drive assembly 71 during operation. Meanwhile, partitions 76 are respectively provided on the left and right sides of the reinforcing plate 75, with each partition 76 corresponding to the inner left and right walls of the housing 1, thus clearly dividing the smoke collection chamber inside the housing 1 into two independent left smoke collection chambers 11 and 12. The left smoke collection chamber 11 corresponds to the left air inlet 31, and the right smoke collection chamber 12 corresponds to the right air inlet 32, providing an independent airflow channel basis for the adjustment of the airflow distribution structure 7. The reinforcing plate 75 provides reliable installation support for the drive assembly 71, ensuring its operational stability; the partitions 76 form independent left and right smoke collection chambers, avoiding mutual interference of airflow on both sides. Combined with the air guide plate 74, the airflow can be precisely distributed, further improving smoke extraction efficiency and reducing the diffusion of oil fumes.

[0030] It is understood that, in addition to being located on both sides of the reinforcing plate 75, the partition 76 in this embodiment can also be a U-shaped partition 76 covering the reinforcing plate 75 in other embodiments, which can also divide the smoke collection chamber into independent left and right smoke collection chambers. The specific choice can be made according to the actual situation, and no limitation is made here.

[0031] like Figure 6-9As shown, the drive assembly 71 includes a drive motor 711 and a motor housing 712; the drive motor 711 is located inside the motor housing 712, and the motor housing 712 is fixedly mounted on the reinforcing plate 75. The drive shaft of the drive motor 711 protrudes through the surface of the motor housing 712. The drive end of the drive shaft is fixedly connected to one end of the rotating shaft 72. The other end of the rotating shaft 72 is provided with a bracket 73. The rotating shaft 72 is rotatably connected to the bracket 73. The bracket 73 is fixedly connected to the smoke hood 3. The air guide plate 74 is fixedly connected to the middle of the rotating shaft 72.

[0032] Specifically, the drive motor 711 is housed inside the motor housing 712, which is fixedly mounted on the reinforcing plate 75 to ensure stable assembly of the drive assembly 71. The drive shaft of the drive motor 711 protrudes through the surface of the motor housing 712, and its drive end is fixedly connected to one end of the rotating shaft 72 (e.g., with screws). The other end of the rotating shaft 72 is fitted with a bracket 73, and the rotating shaft 72 and the bracket 73 are rotatably engaged. The bracket 73 is fixedly connected to the smoke hood 3. To prevent friction and abnormal noise during rotation, the bracket 73 is made of POM material, which not only ensures rigidity and prevents deformation but also ensures smooth rotation without friction or abnormal noise. The air guide plate 74 is fixedly installed in the middle of the rotating shaft 72. During operation, the drive motor 711 starts and drives the drive shaft to rotate, which in turn drives the rotating shaft 72 to rotate around the bracket 73. The rotating shaft 72 simultaneously drives the air guide plate 74 in the middle to move, thereby adjusting the opening area of ​​the corresponding air outlet 13 of the left and right smoke collection chambers 12. The motor box 712 and the bracket 73 form a double fixed support, which can ensure the stable operation of the drive component 71 and the rotating shaft 72. The connection structure between the rotating shaft 72 and the air guide plate 74 is simple and reliable, ensuring the precise movement of the air guide plate 74, thereby achieving stable air volume adjustment and improving the operational reliability of the range hood.

[0033] It is understood that the drive motor 711 in this embodiment is a small DC motor. In other embodiments, a stepper motor can also be used. By recording the number of steps of the stepper motor, the angle of the air guide plate 74 can be precisely adjusted. The angle between the air guide plate 74 and the vertical plane can be adjusted at will from 0 to 90°, thereby achieving precise control.

[0034] like Figure 6 and Figure 8 As shown, the surface of the motor box 712 is also provided with a micro switch 7121, a first limiting part 7122 and a second limiting part 7123. The micro switch 7121 has a switch contact 7124 on its top. The first limiting part 7122 and the second limiting part 7123 are both located above the switch contact 7124 and form a limiting space 7125 with the three as the boundary. A switch pressure plate 77 is provided in the limiting space 7125. The switch pressure plate 77 is fixedly connected to the drive shaft. The drive motor 711 drives the switch pressure plate 77 to move within the limiting space 7125.

[0035] Specifically, on the outer surface of the motor housing 712, corresponding to the mounting area of ​​the drive shaft, a micro switch 7121, a first limiting part 7122, and a second limiting part 7123 are fixedly assembled. The micro switch 7121 has a protruding switch contact 7124 on its top for feedback of position signals. The first limiting part 7122 and the second limiting part 7123 are arranged opposite each other, located above the switch contact 7124 on both sides, and together they form a closed limiting space 7125. The size of this space is adapted to the movement trajectory of the switch plate 77. The switch plate 77 is a structural component adapted to the limiting space 7125. One end of it is coaxially fixedly connected to the drive shaft of the drive motor 711 and rotates synchronously with the drive shaft. The other end extends into the limiting space 7125, allowing it to move in an arc within the space along with the drive shaft.

[0036] The working process is as follows: When the range hood needs to adjust the air volume, the drive motor 711 starts and drives the drive shaft to rotate. The drive shaft synchronously drives the switch plate 77 to move within the limiting space 7125. When the switch plate 77 moves to the point of contacting the first limiting part 7122, the first limiting part 7122 restricts the switch plate 77 from continuing to move in that direction through mechanical blocking. At the same time, it triggers the drive motor 711 to stop driving. At this time, the air guide plate 74 (made of cold-rolled plate with a thickness of at least 2.0mm or aluminum alloy material of the same thickness) is adjusted to the maximum open / closed state of one side of the smoke collection chamber. When the switch plate 77 moves in the opposite direction and contacts the second limiting part 7123, the corresponding adjustment state of the other side of the smoke collection chamber is achieved in the same way. Simultaneously, during its movement, the switch plate 77 interacts synchronously with the switch contact 7124 of the micro switch 7121. In the initial position, the switch plate 77 presses down on the switch contact 7124, closing the micro switch 7121 and sending a signal indicating that the air guide plate 74 has returned to its reset position. When the switch plate 77 rotates away from its initial position with the drive shaft, the switch contact 7124 pops up, the micro switch 7121 opens, and sends a signal indicating the adjustment status of the air guide plate 74. Through the on / off changes of the switch contact 7124, the real-time position of the air guide plate 74 is precisely and synchronously fed back. This structure, through the first and second limiting parts 7123, precisely limits the drive stroke. Combined with the linkage between the micro switch 7121 and the switch plate 77, it accurately feeds back the position information of the air guide plate 74, ensuring precise and controllable airflow adjustment and improving the reliability of the range hood.

[0037] like Figure 4-5 and Figure 9As shown, a left baffle 78 is provided at the top corner of the left smoke collection chamber 11, and a right baffle 79 is provided at the top corner of the right smoke collection chamber 12. The two ends of the left baffle 78 are fixedly connected to the inner wall of the top corner of the left smoke collection chamber 11, and the plate surface of the left baffle 78 is arranged at an inclined angle with the two top corner walls of the left smoke collection chamber 11, together forming a closed triangular structure. The two ends of the right baffle 79 are fixedly connected to the inner wall of the top corner of the right smoke collection chamber 12, and the plate surface of the right baffle 79 is arranged at an inclined angle with the two top corner walls of the right smoke collection chamber 12, together forming a closed triangular structure.

[0038] Specifically, when the fumes enter the left smoke collection chamber 11 or the right smoke collection chamber 12, the wall surface of the baffle forms a smooth guide channel, guiding the fumes along the inclined surface of the baffle to the air outlet 13, avoiding airflow stagnation and meandering at the top corner. The structural design of the baffle eliminates the airflow dead angle at the top corner of the smoke collection chamber, reducing the stagnation and oil accumulation of fumes; at the same time, the smooth triangular guide channel regulates the airflow direction, reduces airflow resistance, and improves the smoothness of smoke exhaust. Combined with the air volume distribution structure 7, it further optimizes the air volume utilization efficiency and ensures stable smoke exhaust effect.

[0039] In another embodiment, the air volume distribution structure 7 may also adopt a dual-motor structure, in which each individual motor controls an air guide plate 74. The left air guide plate 74 is controlled to flip by the left motor, and the right air guide plate 74 is controlled by the right motor, thereby realizing the function of adjusting the air volume on the left and right sides.

[0040] Specifically, when the airflow distribution structure 7 adopts a dual-motor configuration, the left motor is connected to the left air guide plate 74, and the right motor is connected to the right air guide plate 74. The two motors are independently installed at corresponding positions at the rear end of the smoke hood 3. When it is necessary to adjust the airflow on the left side, the left motor starts and drives the left air guide plate 74 to rotate, changing the opening area of ​​the air outlet 13 corresponding to the left smoke collection chamber 11. When it is necessary to adjust the airflow on the right side, the right motor starts and drives the right air guide plate 74 to rotate, changing the opening area of ​​the air outlet 13 corresponding to the right smoke collection chamber 12. The two motors can operate independently or synchronously to achieve independent or coordinated adjustment of the left and right airflow. The dual motors independently control the corresponding air guide plates 74, making the adjustment of the left and right airflow more flexible; it can accurately adapt to different burner usage scenarios, further improving the accuracy of airflow distribution and ensuring stable smoke exhaust effect on each side.

[0041] like Figure 1-3 and Figure 9 As shown, the adjustable air volume range hood also includes a housing assembly 2, which is located on the top of the housing 1. The housing assembly 2 includes a housing 21 and a fan 22. The fan 22 is located inside the housing 21, and the bottom of the housing 21 is connected to the air outlet 13.

[0042] Specifically, the housing assembly 2 includes a housing 21 and a fan 22. The fan 22 is fixedly installed inside the housing 21. The bottom opening of the housing 21 is precisely connected and sealed to the air outlet 13 at the top of the housing 1. During operation, the fan 22 generates negative pressure suction, drawing the oil fumes from the left and right smoke collection chambers 12 into the housing 21 through the connecting channel between the bottom of the housing 21 and the air outlet 13 of the housing 1. The fumes are then discharged to the outside by the action of the fan 22, achieving oil fume extraction and emission. The housing 21 provides a stable installation space for the fan 22, ensuring stable operation of the fan 22. The sealed connection design between the housing 21 and the air outlet 13 of the housing 1 reduces airflow leakage and resistance, improving smoke extraction efficiency.

[0043] In some available embodiments, both the left smoke collection chamber 11 and the right smoke collection chamber 12 are provided with sensing components, including an oil fume concentration probe and a temperature probe.

[0044] Specifically, sensing components are installed inside the left smoke collection chamber 11 and the right smoke collection chamber 12, respectively. Each sensing component integrates an oil fume concentration probe and a temperature probe, with the probes facing the air inlet side to accurately capture the oil fume status within the chamber. During operation, the oil fume concentration probe detects the oil fume concentration in the corresponding smoke collection chamber in real time, while the temperature probe simultaneously detects the temperature within the chamber. Both transmit the detected signals synchronously to the range hood's control system, providing data support for airflow distribution adjustment. By accurately collecting oil fume concentration and temperature data from the left and right smoke collection chambers 12 in real time, a reliable basis is provided for airflow adjustment, enabling dynamic adaptation of airflow. This improves the intelligence and accuracy of airflow distribution, further optimizes smoke extraction, and reduces energy waste.

[0045] like Figure 4-5 As shown, an electrical box 9 is also provided above the housing assembly 2. The electrical box 9 contains a controller, which is electrically connected to the micro switch 7121, the drive motor 711, and the sensing component.

[0046] Specifically, an electrical box 9 is fixedly installed on top of the housing assembly 2. The electrical box 9 contains a controller, which is electrically connected to a micro switch 7121, a drive motor 711, and sensing components in the left and right smoke collection chambers 12 via wires. During operation, the oil fume concentration and temperature signals detected by the sensing components, as well as the position signal of the air guide plate 74 fed back by the micro switch 7121, are all transmitted to the controller in real time. After processing the signals, the controller sends corresponding start / stop and direction commands to the drive motor 711, achieving automatic airflow adjustment. As the core control unit, the controller centrally receives signals from all components and issues commands, ensuring accurate and reliable signal transmission. It can also achieve intelligent dynamic adjustment of airflow by linking the sensing components and the actuators, improving ease of use and smoke exhaust adaptability, and ensuring stable and efficient equipment operation.

[0047] like Figure 1-3As shown, the front end of the housing 1 is also provided with a switch glass assembly 4 and an oil-guiding glass assembly 5. The switch glass assembly 4 is located above the oil-guiding glass assembly 5. The switch glass assembly 4 is hinged to the housing 1, and the oil-guiding glass assembly 5 is fixedly connected to the housing 1.

[0048] Specifically, a switch glass assembly 4 and an oil-guiding glass assembly 5 are assembled at the front end of the housing 1. The switch glass assembly 4 is located above the oil-guiding glass assembly 5. The switch glass assembly 4 is connected to the housing 1 via a hinge structure and can be flipped open or closed around the hinge. The oil-guiding glass assembly 5 is fixedly connected to the housing 1 and its surface is adapted to the front contour of the housing 1 to collect oil droplets in the fumes. The hinged design of the switch glass assembly 4 facilitates operation and equipment maintenance, while the fixed assembly of the oil-guiding glass assembly 5 ensures the stability of oil guidance. The two work together to achieve both convenient operation and effective collection of oil stains, preventing dripping and keeping the equipment and kitchen clean.

[0049] Furthermore, the switch glass assembly 4 is arranged on the upper front of the housing 1 and is used to control the range hood's smoke extraction and lighting functions. The switch glass 41 is equipped with a hinge 42, a switch bracket 73, a push rod bracket 73, and a control switch. The hinge 42, switch bracket 73, and push rod bracket 73 are all connected to the switch glass 41 by adhesive. The switch glass assembly 4 is connected to the housing 1 via the hinge 42. The oil-guiding glass assembly 5 is arranged on the lower front of the housing 1 and is used for oil guidance. The oil-guiding glass 51 is equipped with an oil-guiding glass adhesive plate 52, which is connected to the oil-guiding glass 51 by adhesive. The oil-guiding glass assembly 5 is connected to the housing 1 via the oil-guiding glass adhesive plate 52. An oil cup 8 is located below the oil-guiding glass assembly 5, and an oil-guiding groove is provided on the oil-guiding glass adhesive plate 52, which communicates with the inner groove of the oil cup 8.

[0050] Specifically, the switch glass assembly 4 serves as a functional control unit. Its surface control switch receives user commands, enabling the activation and adjustment of core functions such as smoke extraction and lighting. The hinge 42's movable connection to the housing 1 allows the switch glass assembly 4 to be flexibly rotated, without affecting the smoke extraction path and facilitating equipment maintenance. The oil-guiding glass assembly 5, as an oil-guiding unit, maintains its position through a fixed connection between the oil-guiding glass adhesive plate 52 and the housing 1. The oil-guiding glass 51 collects oil droplets separated from cooking fumes, guiding them along a preset path to the inner groove of the oil cup 8, preventing oil from dripping and contaminating the equipment or kitchen environment, thus achieving oil guiding and anti-fouling functions. These two components work in tandem, ensuring both convenient operation of the equipment and fulfilling the oil guiding requirements after smoke separation.

[0051] like Figure 9 As shown, the housing 1 is also provided with a flip-plate mechanism 6. The fixed end of the flip-plate mechanism 6 is connected to the inner wall of the housing 1, and the driving end of the flip-plate mechanism 6 is connected to the switch glass assembly 4 to drive the switch glass assembly 4 to open or close.

[0052] Specifically, the flip-plate mechanism 6 is assembled inside the housing 1, with its fixed end securely connected to the inner wall of the housing 1 and its driving end connected to the corresponding position of the switch glass assembly 4. When the range hood is started or the switch glass assembly 4 needs to be opened, the driving end of the flip-plate mechanism 6 generates a driving force, causing the switch glass assembly 4 to flip open around its hinge point with the housing 1; when the device is turned off or needs to be closed, the driving end of the flip-plate mechanism 6 moves in the opposite direction, pulling the switch glass assembly 4 to flip back to the closed state. The flip-plate mechanism 6 provides a stable driving force for the switch glass assembly 4, realizing automatic on / off control and improving ease of operation; at the same time, in conjunction with the structure of the housing 1, it can help protect internal components when closed and does not affect the path of oil fume intake when open.

[0053] Furthermore, the flip mechanism 6 assembly is arranged inside the right side of the housing 1 and is used to control the closing and opening of the switch glass assembly 4. The flip mechanism 6 assembly mainly consists of a motor, a motor bracket 73, a connecting rod, a first limit switch for the connecting rod, and a second limit switch for the connecting rod.

[0054] Specifically, the flip-plate mechanism 6 is assembled inside the right side of the housing 1. Its motor is fixed to the motor bracket 73 by screws, and the connecting rod is installed on the motor shaft. The first and second limit positions of the connecting rod are fixed to the motor bracket 73 by welding. When the switch glass assembly 4 needs to be opened, the reversible DC motor rotates clockwise, driving the connecting rod to push the switch glass assembly 4 forward, causing the switch glass assembly 4 to flip open around the hinge 42 as the pivot 72, until the connecting rod touches the first limit position, at which point the motor stops, and the switch glass assembly 4 is in the fully open state. When it needs to be closed, the motor rotates counterclockwise, driving the connecting rod to pull the switch glass assembly 4 backward, causing it to flip open around the hinge 42 as the pivot 72, until the connecting rod touches the second limit position, at which point the motor stops, and the switch glass assembly 4 is fully closed. The motor provides stable driving force, which, together with the connecting rod and limit structure, enables precise control of the opening and closing angle of the switch glass assembly 4; the action response is smooth and the positioning is reliable, improving the ease of operation and operational stability of the switch glass assembly 4, and ensuring a good user experience.

[0055] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0056] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0058] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0059] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "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 this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring 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. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0061] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0062] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A range hood with adjustable airflow, characterized in that, include: The casing has a smoke collection chamber inside and an air outlet at the top. A smoke hood is provided at the front end of the housing. The smoke hood has a left air inlet and a right air inlet, both of which are connected to the air outlet. An airflow distribution structure is provided at the rear end of the smoke hood and between the left air inlet and the right air inlet to divide the smoke collection chamber into a left smoke collection chamber and a right smoke collection chamber. The air volume distribution structure includes an air guide plate and a drive assembly for driving the air guide plate; The air guide plate has an initial position and is driven by the drive assembly to move relative to the left smoke collection chamber and the right smoke collection chamber, so as to increase or decrease the opening area of ​​the left smoke collection chamber and the right smoke collection chamber corresponding to the air outlet.

2. The adjustable airflow range hood according to claim 1, characterized in that, The inner rear wall of the housing is provided with a reinforcing plate, which is fixedly connected to the drive assembly. The reinforcing plate is provided with partitions on both sides, and the two partitions form the left smoke collection chamber and the right smoke collection chamber with the inner walls of the left and right sides of the housing, respectively.

3. The adjustable airflow range hood according to claim 2, characterized in that, The drive assembly includes a drive motor and a motor housing; The drive motor is located inside the motor box, which is fixedly mounted on the reinforcing plate. The drive shaft of the drive motor protrudes through the surface of the motor box. A rotating shaft is fixedly provided at the drive end of the drive shaft, and a bracket is provided at the other end of the rotating shaft. The rotating shaft is rotatably connected to the bracket, and the bracket is fixedly connected to the smoke hood. The air guide plate is fixedly connected to the middle of the rotating shaft.

4. The adjustable airflow range hood according to claim 3, characterized in that, The surface of the motor box is also provided with a micro switch, a first limiting part and a second limiting part. The micro switch has a switch contact on its top. The first limiting part and the second limiting part are both located above the switch contact and form a limiting space with the three of them as the boundary. A switch pressure plate is provided in the limiting space. The switch pressure plate is fixedly connected to the drive shaft. The drive motor drives the switch pressure plate to move in the limiting space.

5. The adjustable airflow range hood according to claim 1, characterized in that, A left baffle is provided at the top corner of the left smoke collection chamber, and a right baffle is provided at the top corner of the right smoke collection chamber. The two ends of the left baffle are fixedly connected to the inner wall of the top corner of the left smoke collection chamber. The plate surface of the left baffle is arranged at an inclined angle with the two top corner walls of the left smoke collection chamber, together forming a closed triangular structure. The two ends of the right baffle are fixedly connected to the inner wall of the top corner of the right smoke collection chamber, and the surface of the right baffle and the two top corner walls of the right smoke collection chamber are arranged at an inclined angle to form a closed triangular structure.

6. The adjustable airflow range hood according to claim 4, characterized in that, It also includes a housing assembly, which is located on the top of the housing. The housing assembly includes a housing and a fan. The fan is located inside the housing, and the bottom of the housing is connected to the air outlet.

7. The adjustable airflow range hood according to claim 1, characterized in that, Both the left and right smoke collection chambers are equipped with sensing components, which include an oil fume concentration probe and a temperature probe.

8. The adjustable airflow range hood according to claim 6, characterized in that, An electrical box is also provided above the housing assembly. The electrical box contains a controller, which is electrically connected to the micro switch, drive motor, and sensing component.

9. The adjustable airflow range hood according to claim 1, characterized in that, The front end of the housing is also provided with a switch glass assembly and an oil-guiding glass assembly. The switch glass assembly is located above the oil-guiding glass assembly. The switch glass assembly is hinged to the housing, and the oil-guiding glass assembly is fixedly connected to the housing.

10. The adjustable airflow range hood according to claim 9, characterized in that, The housing is also equipped with a flip-plate mechanism. The fixed end of the flip-plate mechanism is connected to the inner wall of the housing, and the driving end of the flip-plate mechanism is connected to the switch glass assembly to drive the switch glass assembly to open or close.

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