Range hood

Abstract

The present invention provides a range hood, comprising a chassis assembly, wherein the chassis assembly has a left air inlet, a right air inlet, and a middle air inlet. The range hood also includes: a middle air guide plate located at the middle air inlet; and a first drive mechanism, which is disposed within the chassis assembly, the first drive mechanism being connected to the middle air guide plate, the middle air guide plate having a raised position and a lowered position under the drive of the first drive mechanism, the middle air guide plate closing the middle air inlet when in the raised position, and opening the middle air inlet when in the lowered position. By providing the middle air inlet, the area of the air inlet can be increased. When the fumes generated by cooking are large, the middle air inlet can be opened to instantly and quickly absorb the fumes, thereby effectively protecting the environmental hygiene of the kitchen and the health of the user. The middle air guide plate opens and closes the middle air inlet by raising and lowering. The middle air inlet can be opened only when a large amount of fumes are generated, and the middle air inlet can be kept closed at other times.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to a range hood. Background Art

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. Installed above the kitchen stove, it quickly extracts waste from stove combustion and harmful cooking fumes, exhausting them outdoors. This reduces pollution, purifies the air, and provides safety features such as anti-poisoning and explosion-proofing, making it increasingly popular.

[0003] Most range hoods on the market use one or two air inlets. Two inlets can extract cooking fumes from the left and right burners separately, while range hoods with a single inlet offer limited specificity. Air deflectors are typically installed at the air inlets to create negative pressure there, enhancing fume extraction. These deflectors can also close the air inlet when the range hood is not in use, isolating the kitchen from the interior of the range hood and the flue, while also protecting the internal fan.

[0004] While range hoods with two air inlets are highly targeted for exhausting oil fumes from the left and right burners, the air deflector takes up a significant amount of space within the range hood, limiting the layout of the air inlets and resulting in smaller inlets. Consequently, when cooking produces large amounts of oil fumes, the exhaust efficiency of range hoods with two air inlets is compromised. To improve exhaust efficiency, a higher-power fan can be used. However, high-power fans generate greater noise and consume more energy, making them less suitable for meeting user needs. Summary of the Invention

[0005] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present invention, a range hood is provided, comprising a chassis assembly, the chassis assembly having a left air inlet, a right air inlet and a middle air inlet, the range hood also comprising: an intermediate air guide plate located at the middle air inlet; and a first driving mechanism, which is arranged in the chassis assembly, the first driving mechanism being connected to the intermediate air guide plate, the intermediate air guide plate having a raised position and a lowered position under the drive of the first driving mechanism, the intermediate air guide plate closing the middle air inlet when in the raised position, and opening the middle air inlet when in the lowered position.

[0006] The present invention increases the area of the air inlets by providing a central air inlet between the left and right air inlets. When cooking generates significant amounts of fumes, the central air inlet can be opened to quickly and instantly remove the fumes, effectively protecting the kitchen's sanitation and the health of users. The central air guide plate opens and closes the central air inlet by rising and falling. This inlet can be opened only when significant amounts of fumes are present, remaining closed at all other times. This achieves both isolation of the range hood's interior from the exterior and protection of its internal components. Furthermore, the central air inlet can be used in conjunction with the left air inlet, the right air inlet, both the left and right air inlets, or independently, offering significant flexibility in use.

[0007] Exemplarily, the range hood further includes a left air guide plate located at the left air inlet and a right air guide plate located at the right air inlet, and further includes a second drive mechanism located within the chassis assembly, the second drive mechanism being connected to the left air guide plate and the right air guide plate. Driven by the second drive mechanism, the left air guide plate and the right air guide plate have an open position and a closed position. When the left air guide plate and the right air guide plate are in the open position, the left air inlet and the right air inlet are opened, respectively. When the left air guide plate and the right air guide plate are in the closed position, the left air inlet and the right air inlet are closed, respectively. With this arrangement, the range hood can completely cover the tops of the two burners. Depending on the direction of the oil fume source, the air inlet close to it is opened, thereby shortening the distance for exhausting the oil fume, facilitating the absorption of oil fume generated by cooking, and enhancing the exhaust effect.

[0008] Exemplarily, the second driving mechanism includes a left flipping mechanism connected to the left air deflector to flip the left air deflector between its open and closed positions; or / and a right flipping mechanism connected to the right air deflector to flip the right air deflector between its open and closed positions. This flipping arrangement can reduce the space occupied by the left and right air deflectors when open, thereby reducing the usable space of the range hood and increasing the space available for users to move around while cooking.

[0009] For example, the left air deflector has its pivot axis located at its left edge, and the left air deflector flips toward the interior of the chassis assembly to its open position; or / and the right air deflector has its pivot axis located at its right edge, and the right air deflector flips toward the interior of the chassis assembly to its open position. This inward-tilting arrangement allows the range hood to be as close to the stove as possible while preventing the user's head from colliding with the range hood, ensuring ample room for movement while cooking. Furthermore, the air deflectors on both sides funnel fumes toward the center, allowing for better coordination with the central air inlet for exhaust.

[0010] For example, the left air deflector and / or the right air deflector are hinged to the chassis assembly. Therefore, this structure is easy to install, and the air deflectors on both sides can be flexibly flipped, minimizing the noise generated by the air deflectors colliding with the chassis assembly 200 when opening and closing.

[0011] Illustratively, each of the left and right flip mechanisms includes: a motor secured within the housing assembly; a first transmission rod having a first end and a second end, the first end being connected to the motor's shaft; and a second transmission rod having a third end and a fourth end, the third end being pivotally connected to the second end, and the fourth end being pivotally connected to the corresponding left or right air deflector. Consequently, the mechanism features a simple component structure, low processing cost, and reduced weight and volume, reducing the weight and manufacturing cost of the range hood and simplifying its internal construction.

[0012] Exemplarily, each of the left and right flip mechanisms further includes a mounting base, comprising a side panel and a horizontal panel. The side panels are tightly attached to the side walls of the chassis assembly, and the horizontal panel is vertically connected to the side panels. The motor is secured within the space between the side panels and the horizontal panel, and the motor's rotating shaft passes through the horizontal panel and connects to the first transmission rod. Therefore, by securely attaching the motor to the chassis assembly via the mounting base, the effects of vibration can be effectively eliminated, resulting in a quieter operation of the range hood and an enhanced user experience.

[0013] Exemplarily, the range hood further includes an oil screen, comprising a bottom wall and left and right walls extending upward from the left and right edges of the bottom wall. The left and right walls form the left and right air inlets, respectively, and the bottom wall forms the center air inlet. Therefore, when oil fumes are drawn into the range hood, they are initially filtered through the oil screen to prevent large objects from being drawn into the range hood and damaging its internal structure. This also effectively prevents the user's hands, hair, etc. from entering the range hood and causing dangerous accidents.

[0014] Exemplarily, the oil screen further includes a left front wall and a left rear wall, as well as a right front wall and a right rear wall, wherein the left front wall and the left rear wall extend leftward from the front edge and the rear edge of the left wall, respectively, and when the left air deflector is in its open position, it covers the area enclosed by the left front wall, the left rear wall, and the upper edge of the left wall; and the right front wall and the right rear wall extend rightward from the front edge and the rear edge of the right wall, respectively, and when the right air deflector is in its open position, it covers the area enclosed by the right front wall, the right rear wall, and the upper edge of the right wall. This arrangement allows full utilization of the front and rear areas of the left and right air deflectors, allowing them to also serve as air inlets to exhaust oil fumes, thereby increasing the air inlet area and improving the oil fume exhaust effect.

[0015] For example, the range hood is internally provided with inclined left and right top walls, which are parallel to the left and right air deflectors in the open position, respectively. When in the open position, the left and right air deflectors abut against the left and right top walls, respectively. This arrangement isolates the internal components of the range hood from the outside, ensuring safety and aesthetics. It also functions as a position limiter for the left and right air deflectors, preventing them from accidentally damaging the flip mechanism and other structures.

[0016] For example, the range hood further includes a pyroelectric module mounted on the chassis assembly for collecting temperature data at the left and right burners; and a control device connected to the pyroelectric module and the first and second drive mechanisms. The control device is configured to control the first and second drive mechanisms to open or close corresponding air deflectors based on the temperature data. Thus, the range hood can automatically control the opening and closing of the air deflectors based on the burner temperatures, achieving automated and intelligent functionality, eliminating manual user operations and improving the user experience.

[0017] For example, the control device is specifically configured to control the second drive mechanism to open the left air deflector when the temperature at the left burner is determined to be greater than a first temperature threshold based on the temperature data; and control the second drive mechanism to open the right air deflector when the temperature at the right burner is determined to be greater than a second temperature threshold based on the temperature data. In this way, the timing of opening the left and right air deflectors can be precisely controlled based on the burner temperature, thereby improving the efficiency of the range hood and avoiding energy waste.

[0018] Exemplarily, the control device is further configured to control the first drive mechanism to open the intermediate air guide plate when, based on the temperature data, it is determined that the temperature at either the left burner or the right burner is greater than a third temperature threshold, the third temperature threshold being greater than the first temperature threshold and greater than the second temperature threshold; or when, based on the temperature data, it is determined that the temperatures at both the left burner and the right burner are greater than the third temperature threshold, control the first drive mechanism to open the intermediate air guide plate; or when, based on the temperature data, it is determined that the sum of the temperatures at the left burner and the right burner is greater than a fourth temperature threshold, control the first drive mechanism to open the intermediate air guide plate, the fourth temperature threshold being greater than the first temperature threshold and greater than the second temperature threshold. In this way, the timing of opening the intermediate air guide plate can be precisely controlled based on the burner temperature, thereby improving the efficiency of the range hood and further avoiding energy waste.

[0019] For example, the range hood also includes a communication module connected to the control device, which is configured to transmit the temperature data to the cooktop via the communication module. Thus, the communication module can transmit the burner temperature to other devices, enabling temperature data monitoring and storage, and also enabling linkage between multiple devices, making the range hood more intelligent.

[0020] For example, the chassis assembly is provided with an aiming light emitter connected to the control device. The control device is configured to control the aiming light emitter to emit a light beam illuminating the temperature data collection area when the pyroelectric module collects the temperature data. Thus, the aiming light emitter visualizes the temperature collection area, making it easier for the user to see whether the burner is within the collection area, thereby ensuring the proper operation of the range hood.

[0021] For example, the chassis assembly is provided with indicator lights connected to the control device. The control device is configured to control the indicator lights to indicate the temperatures of the left and right burners based on the temperature data. This configuration allows the user to intuitively see the current burner temperatures, thereby determining the cooking status and necessary operations. This reduces the risk of food burning or sticking to the pot, making cooking easier. It also reduces the possibility of dangerous accidents such as burner fires, ensuring user cooking safety.

[0022] Exemplarily, the first drive mechanism includes a linear motor secured within the chassis assembly; a slide rail having a fixed portion and a sliding portion. The fixed portion is secured within the chassis assembly, and the sliding portion is connected to the linear motor and the intermediate air deflector. The linear motor drives the intermediate air deflector to rise and fall via the sliding portion. This arrangement effectively reduces noise generated during the raising and lowering of the intermediate air deflector, lowers motion resistance, and thus reduces the power of the linear motor, achieving energy conservation and emission reduction.

[0023] For example, the range hood includes a fan system located within the chassis assembly, with the fan system's air inlet located directly above the intermediate air inlet. Therefore, the intermediate air inlet is closest to the air inlet and has the strongest smoke extraction capability, enabling it to instantly remove large amounts of smoke.

[0024] This summary introduces a series of simplified concepts that will be further described in the detailed description. This summary is not intended to limit the key features and essential features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0025] The advantages and features of the present invention are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The following drawings of the present invention are hereby incorporated into the present invention for understanding the present invention. The drawings show embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0027] Figure 1 is a perspective view of a range hood according to an exemplary embodiment of the present invention;

[0028] Figure 2 for Figure 1 A perspective view of the range hood with the left air guide plate open is shown in FIG.

[0029] Figure 3 for Figure 1 A perspective view of the range hood with the right air guide plate opened is shown in FIG.

[0030] Figure 4 for Figure 1 A three-dimensional view of the range hood with all air guide plates opened;

[0031] Figure 5 for Figure 1 A perspective view of the internal structure of the range hood as viewed from the rear;

[0032] Figure 6 for Figure 1 The internal structure of the range hood shown in FIG is viewed from the front;

[0033] Figure 7 for Figure 1 A partial perspective view of the left flip mechanism shown in FIG;

[0034] Figure 8 A perspective view of a range hood according to another exemplary embodiment of the present invention;

[0035] Figure 9 for Figure 8 A perspective view of the oil screen and each air guide plate shown in FIG; and

[0036] Figure 10 for Figure 1 Schematic diagram of temperature measurement of the range hood is shown in FIG.

[0037] The above drawings include the following reference numerals:

[0038] 100, 100', range hood; 200, chassis assembly; 210, left air inlet; 220, right air inlet; 230, center air inlet; 310, left air guide plate; 320, right air guide plate; 330, center air guide plate; 400, 400', oil screen; 410, bottom wall; 420, left side wall; 421, left front wall; 422, left rear wall; 430, right side wall; 431, right front wall; 432, right rear wall; 440, left top wall; 450, right top wall; 500, first drive mechanism; 510, linear motor; 520, slide rail; 5 21. Fixed part; 522. Sliding part; 530. Support rod; 600. Left flip mechanism; 610. Motor; 620. First transmission rod; 621. First end; 622. Second end; 630. Second transmission rod; 631. Third end; 632. Fourth end; 640. Mounting seat; 641. Side panel; 642. Horizontal panel; 700. Right flip mechanism; 800. Fan system; 810. Air inlet; 820. Pyroelectric module; 830. Communication module; 840. Aiming light emitter; 850. Indicator light; 910. Left burner; 920. Right burner. DETAILED DESCRIPTION

[0039] In the following description, a large amount of detail is provided to facilitate a thorough understanding of the present invention. However, it will be appreciated by those skilled in the art that the following description merely illustrates preferred embodiments of the present invention, and that the present invention may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well known in the art have not been described in detail.

[0040] The present invention provides a range hood 100. Figure 1-6 As shown, the range hood 100 includes a chassis assembly 200, which is provided with a left air inlet 210, a right air inlet 220, and a center air inlet 230. The center air inlet 230 is located in the middle of the chassis assembly 200, near the burner, with the left side of the left air inlet 210 and the right side of the right air inlet 220. The range hood 100 also includes a center air guide plate 330, which is provided at the center air inlet 230 and is used to open and close the center air inlet 230. For example, the center air guide plate 330 can be provided outside the center air inlet 230.

[0041] The chassis assembly 200 also has a first drive mechanism 500, which is arranged inside the chassis assembly 200 and connected to the intermediate air guide plate 330. The intermediate air guide plate 330 has a raised position and a lowered position under the drive of the first drive mechanism 500. When the intermediate air guide plate 330 is in the raised position, the intermediate air inlet 230 is closed. The intermediate air inlet 230 is completely hidden relative to the outside of the range hood 100. At this time, the first drive mechanism 500 can be in the minimum telescopic state. On the contrary, when the intermediate air guide plate 330 is in the lowered position, the intermediate air inlet 230 is opened. The intermediate air inlet 230 is fully exposed relative to the outside of the range hood 100. At this time, the first drive mechanism 500 can be in the maximum telescopic state.

[0042] When a large amount of cooking fumes are generated in the kitchen, the first drive mechanism 500 drives the middle air guide plate 330 to the lowered position, opening the middle air inlet 230. The cooking fumes can then enter the range hood 100 through the middle air inlet 230 and be discharged outside the kitchen. When the cooking fumes decrease to a certain level, the first drive mechanism 500 drives the middle air guide plate 330 to the raised position, closing the middle air inlet 230. The middle air guide plate 330 now isolates the odor and residual cooking fumes from the kitchen environment.

[0043] The present invention increases the area of the air inlets by providing a central air inlet 230 between the left and right air inlets. When cooking generates significant amounts of cooking fumes, the central air inlet 230 can be opened to quickly and instantly remove the fumes, effectively protecting the kitchen's sanitation and the health of users. The central air guide plate 330 opens and closes the central air inlet 230 by rising and falling. The central air inlet 230 can be opened only when significant amounts of cooking fumes are present, remaining closed at all other times. This achieves both isolation of the interior of the range hood 100 from the exterior and protection of the internal components of the range hood 100. Furthermore, the central air inlet 230 can be used in conjunction with the left air inlet 210, the right air inlet 220, both the left and right air inlets, or independently, offering significant flexibility in use.

[0044] For example, Figure 1-6As shown, the range hood 100 further includes a left air guide plate 310 located at the left air inlet 210 and a right air guide plate 320 located at the right air inlet 220, which are respectively used to open and close the left air inlet 210 and the right air inlet 220. The range hood 100 further includes a second driving mechanism located within the chassis assembly 200, the second driving mechanism being connected to the left air guide plate 310 and the right air guide plate 320. Driven by the second driving mechanism, the left air guide plate 310 and the right air guide plate 320 have an open position and a closed position. When the left air guide plate 310 and the right air guide plate 320 are in the open position, the left air inlet 210 and the right air inlet 220 are opened, respectively. When the left air guide plate 310 and the right air guide plate 320 are in the closed position, the left air inlet 210 and the right air inlet 220 are closed, respectively. The open position of the left air guide plate 310 means that the left air inlet 210 is fully visible relative to the exterior of the range hood 100, that is, the position of the left air guide plate when the left air inlet 210 is open. The closed position of the left air guide plate 310 means that the left air inlet 210 is fully hidden relative to the exterior of the range hood 100, that is, the position of the left air guide plate 310 when the left air inlet 210 is closed.

[0045] When oil smoke appears on the left side of the range hood 100, the second driving mechanism drives the left air guide plate 310 to the open position, thereby opening the left air inlet 210. At this time, the oil smoke can flow along the left air guide plate 310 and enter the interior of the range hood 100 through the left air inlet 210, and then be discharged outside the kitchen. When the oil smoke on the left side of the range hood 100 is reduced to a certain level, the second driving mechanism drives the left air guide plate 310 to the closed position, thereby closing the left air inlet 210. At this time, the left air guide plate 310 isolates the odor and residual oil smoke inside the range hood 100 and in the flue from the kitchen environment. Similarly, when oil smoke appears on the right side of the range hood 100, the second driving mechanism drives the right air guide plate 320 to the open position, thereby opening the right air inlet 220. At this time, the oil smoke can flow along the right air guide plate 320 and enter the interior of the range hood 100 through the right air inlet 220, and then be discharged outside the kitchen. When the oil smoke on the right side of the range hood 100 is reduced to a certain extent, the second driving mechanism drives the right air guide plate 320 to the closed position, so that the right air inlet 220 is closed. At this time, the right air guide plate 320 isolates the odor and residual oil smoke inside the range hood 100 and the flue from the kitchen environment.

[0046] Through this setting, the range hood 100 can completely cover the top of the two burners. According to the different directions of the source of the oil smoke, the air inlet close to it is opened, thereby shortening the distance of the oil smoke exhaust, which is conducive to the absorption of the oil smoke generated by cooking and enhances the effect of oil smoke exhaust.

[0047] For example, Figure 5-6 As shown, the second driving mechanism may include: a left flipping mechanism 600 , or a right flipping mechanism 700 , or both the left flipping mechanism 600 and the right flipping mechanism 700 .

[0048] The left flip mechanism 600 is disposed inside the chassis assembly 200 and connected to the left air guide plate 310 to drive the left air guide plate 310 to flip between an open position and a closed position. The right flip mechanism 700 is disposed inside the chassis assembly 200 and connected to the right air guide plate 320 to drive the right air guide plate 320 to flip between an open position and a closed position. The open position of the left air guide plate 310 and the right air guide plate 320 means that the corresponding air inlet is fully exposed relative to the outside of the range hood 100, that is, the position of each air guide plate when the corresponding air inlet is open. At this time, each flip mechanism can be located at one end of the flip stroke. Their closed position means that the corresponding air inlet is fully hidden relative to the outside of the range hood 100, that is, the position of each air guide plate when the corresponding air inlet is closed. At this time, each flip mechanism can be located at the other end of the flip stroke.

[0049] When oil smoke appears on the left side of the range hood 100, the left air guide plate 310 flips open and the left air inlet 210 opens. At this time, the oil smoke can flow along the left air guide plate 310 and enter the interior of the range hood 100 through the left air inlet 210, and then be discharged outside the kitchen. When the oil smoke on the left side of the range hood 100 decreases to a certain level, the left air guide plate 310 flips closed, and the left air inlet 210 is closed. At this time, the left air guide plate 310 isolates the odor and residual oil smoke inside the range hood 100 and in the flue from the kitchen environment. Similarly, when oil smoke appears on the right side of the range hood 100, the right air guide plate 320 flips open and the right air inlet 220 opens. At this time, the oil smoke can flow along the right air guide plate 320 and enter the interior of the range hood 100 through the right air inlet 220, and then be discharged outside the kitchen. When the oil smoke on the right side of the range hood 100 is reduced to a certain extent, the right air guide plate 320 flips closed, so the right air inlet 220 is closed. At this time, the right air guide plate 320 isolates the odor and residual oil smoke inside the range hood 100 and the flue from the kitchen environment.

[0050] This flipping setting can reduce the space occupied by the left and right air guide plates when they are open, thereby reducing the usable space of the range hood 100 and increasing the space for users to move around when cooking.

[0051] For example, Figure 2 As shown, the flip axis of the left air guide plate 310 is located at its left edge. When the left air guide plate 310 is opened, it gradually flips toward the inside of the chassis assembly 200 from its closed position with the flip axis of its left edge as the center line, and finally reaches the end of the flip stroke. At this time, the left air inlet 210 reaches the open position. Figure 3As shown, the flip axis of the right air deflector 320 is located at its right edge. When the right air deflector 320 is opened, it gradually flips from its closed position toward the interior of the chassis assembly 200, with the flip axis of its right edge as the center line, and finally reaches the end of the flip stroke, at which point the right air inlet 220 reaches the open position. This inward-turning setting allows the range hood 100 to be as close to the stove as possible, while ensuring that the user's head does not collide with the range hood 100, ensuring the user's room to move while cooking. At the same time, through the air deflectors on both sides, the oil smoke will be concentrated in the center, which can better cooperate with the middle air inlet 230 to discharge the oil smoke.

[0052] Preferably, if Figure 5-6 As shown, the left air deflector 310 is hinged to the chassis assembly 200, allowing the left air deflector 310 to flip inward relative to the chassis assembly 200 with the hinge as the flip axis. The right air deflector 320 is hinged to the chassis assembly 200, allowing the right air deflector 320 to flip inward relative to the chassis assembly 200 with the hinge as the flip axis. The hinged connection can be via a hinge structure, or the air deflector can be flipped solely via a flipping mechanism, i.e., there is no connection between the air deflector and the chassis assembly 200. Therefore, this structure is easy to install, allows the air deflectors on both sides to flip flexibly, and minimizes the noise generated by the air deflectors colliding with the chassis assembly 200 when opening and closing.

[0053] Since the left flip mechanism 600 and the right flip mechanism 700 have the same structure, the following description will only take the left flip mechanism 600 as an example, and no further description will be given of the right flip mechanism 700.

[0054] For example, Figure 5-7As shown, the left flip mechanism 600 includes a motor 610, a first transmission rod 620 and a second transmission rod 630. The motor 610 is fixed inside the chassis assembly 200. The first end 621 of the first transmission rod 620 is provided with a structure that matches the rotating shaft of the motor 610, such as a hole, and is connected to the rotating shaft of the motor 610 through the hole. The second end 622 and the third end 631 of the second transmission rod 630 are provided with a matching structure, such as an axial hole, so that the first transmission rod 620 and the second transmission rod 630 are pivotally connected together. The fourth end 632 of the second transmission rod 630 is provided with a matching structure, such as an axial hole, and the left air deflector 310 is pivotally connected together. This arrangement forms a four-bar linkage consisting of the sidewalls of the chassis assembly 200, the first transmission rod 620, the second transmission rod 630, and the left air deflector 310. This mechanism enables the rotation of the motor 610's shaft, which, through the first and second transmission rods 620 and 630, ultimately drives the left air deflector 310 to flip. This mechanism boasts a simple component structure, low manufacturing costs, and a compact weight and volume, reducing the weight and manufacturing costs of the range hood 100 and simplifying its internal structure.

[0055] For example, Figure 5-7 As shown, the left flip mechanism 600 also includes a mounting base 640. The mounting base 640 includes a side plate 641 and a horizontal plate 642. The two can be a single plate that is bent to form a mutually perpendicular structure, and the two are fixed by ribs on both sides to ensure the strength of the mounting base 640. The side plate 641 is fixed to the side wall of the chassis assembly 200 by a threaded connector, and the motor 610 is fixed to the horizontal plate 642 by a threaded connector. The horizontal plate 642 is provided with an opening that matches the rotating shaft. The motor extends the rotating shaft through the opening into the other side of the horizontal plate 642 and connects to the first end 621 of the first transmission rod 620. Through this arrangement, the horizontal plate 642 isolates the first transmission rod 620 from the motor 610, and the first transmission rod 620 will not generate friction with the motor 610 during movement, thereby affecting the service life of the motor 610. Since the motor itself generates vibrations during rotation, the four-bar linkage also generates vibrations during movement. These vibrations will generate noise and vibration of the entire range hood 100. Therefore, by firmly attaching the motor to the chassis assembly 200 through the mounting bracket 640, the above-mentioned influences can be effectively eliminated, making the range hood 100 quieter during operation and improving the user experience.

[0056] For example, Figure 4-6As shown, the range hood 100 can be equipped with an oil screen 400, which includes a bottom wall 410, a left side wall 420 extending upward from the left edge of the bottom wall 410, and a right side wall 430 extending upward from the right edge of the bottom wall 410. The left side wall 420 forms the left air inlet 210, the right side wall 430 forms the right air inlet 220, and the bottom wall 410 forms the center air inlet 230. Therefore, when oil fumes are drawn into the range hood 100, they are initially filtered through the oil screen 400 to prevent large objects from being drawn into the range hood 100 and damaging its internal structure. This also effectively prevents the user's hands, hair, etc. from entering the range hood 100 and causing dangerous accidents.

[0057] In another embodiment, Figure 8-9 As shown, the oil screen 400' also includes a left front wall 421 and a left rear wall 422, as well as a right front wall 431 and a right rear wall 432. The left front wall 421 is located at the front edge of the left wall 420 and extends to the left, while the left rear wall 422 is located at the rear edge of the left wall 420 and extends to the left. When the left air deflector 310 is in its open position, the left front wall 421 and the left rear wall 422 are fully visible to the exterior of the range hood 100'. The right front wall 431 is located at the front edge of the right wall 430 and extends to the right, while the right rear wall 432 is located at the rear edge of the right wall 430 and extends to the right. When the right air deflector 320 is in its open position, the right front wall 431 and the right rear wall 432 are fully visible to the exterior of the range hood 100. This arrangement fully utilizes the front and rear areas of the left and right air deflectors, allowing them to serve as air inlets for exhausting oil fumes, thereby increasing the air inlet area and improving the exhaust efficiency.

[0058] For example, Figure 5-6 As shown, the range hood 100 is provided with a left top wall 440 and a right top wall 450. Both are arranged at an angle internally and are parallel to and closely attached to the left and right air deflectors 310, 320, respectively, when they are in the open position. The left flip mechanism 600 and the right flip mechanism 700, respectively, pass through the left and right top walls 440, 450 from above and connect to the left and right air deflectors 310, 320. This arrangement isolates the internal components of the range hood from the outside, providing both safety and aesthetics. It also functions as a position limiter for the left and right air deflectors 310, 320, preventing accidents that could damage the flip mechanism and other structures.

[0059] For example, Figure 10As shown, the range hood 100 can be provided with a pyroelectric module 820, which is provided on a panel of the range hood 100 near the burner side and is used to collect temperature data at the left burner 910 and the right burner 920. The range hood 100 is also provided with a control device (not shown) connected to the first drive mechanism 500 and the second drive mechanism. The control device can be connected to the pyroelectric module 820 via a wired or wireless manner. The control device is used to receive the temperature data collected by the pyroelectric module 820 and control the first drive mechanism 500 and the second drive mechanism to open or close the corresponding air guide plates based on this data. Therefore, the range hood 100 can automatically control the opening and closing of the air guide plates according to the temperature of the burner, realizing automated and intelligent functions, eliminating the manual operation steps of the user, and improving the user experience.

[0060] Preferably, when the control device receives temperature data collected by the pyroelectric module 820 at the left burner 910 indicating that the temperature is greater than a first temperature threshold, the control device controls the second drive mechanism to drive the left air deflector 310 to the open position. The first temperature threshold is, for example, 60, 65, or 70 degrees Celsius. During cooking, cooking utensils are typically placed on the burners, and the temperature of the cooking utensils is generally related to the concentration of cooking fumes. Therefore, by detecting problems at the left burner 910, the concentration of cooking fumes generated there can be effectively reflected. Similarly, when the control device receives temperature data collected by the pyroelectric module 820 at the right burner 920 indicating that the temperature is greater than a second temperature threshold, the control device controls the second drive mechanism to drive the right air deflector 320 to the open position. The second temperature threshold is, for example, 60, 65, or 70 degrees Celsius. The first and second temperature thresholds can be set based on user habits or at the factory. The first temperature threshold can be equal to or different from the second temperature threshold. In this way, the opening timing of the left and right air guide plates can be precisely controlled according to the temperature of the stove head, thereby improving the use efficiency of the range hood 100 and avoiding energy waste.

[0061] Preferably, when the control device receives temperature data collected by the pyroelectric module 820 at the left burner 910 or the right burner 920 indicating that the temperature at either location is greater than a third temperature threshold, the control device controls the first drive mechanism 500 to drive the middle air guide plate 330 to the open position. The third temperature threshold is greater than the first temperature threshold and greater than the second temperature threshold. The third temperature threshold is, for example, 200, 210, 220, 230, 240, or 250 degrees Celsius. Alternatively, when the control device receives temperature data collected by the pyroelectric module 820 at both the left burner 910 and the right burner 920 indicating that both temperatures are greater than the third temperature threshold, the control device controls the first drive mechanism 500 to drive the middle air guide plate 330 to the open position. Alternatively, when the control device receives temperature data collected by the pyroelectric module 820 at both the left burner 910 and the right burner 920 indicating that the sum of the temperatures at these locations is greater than a fourth temperature threshold, the control device controls the first drive mechanism 500 to drive the middle air guide plate 330 to the open position. The fourth temperature threshold is greater than the first temperature threshold and greater than the second temperature threshold. Examples of the fourth temperature threshold include 350, 360, 370, 380, 390, or 400 degrees Celsius. The third and fourth temperature thresholds can be set based on user preferences or factory settings. This allows the opening timing of the intermediate air guide plate 330 to be precisely controlled based on the burner temperature, thereby improving the efficiency of the range hood 100 and further avoiding energy waste.

[0062] For example, Figure 10 As shown, the range hood 100 is equipped with a communication module 830, which can be connected to the control device via wired or wireless means. When the control device receives temperature data from the left burner 910 or the right burner 920 collected by the pyroelectric module 820, it can transmit the data via the communication module 830 to other devices. For example, the data can be sent to the communication module 830 on the burner to control the burner's heat level. For example, if the temperature data collected by the pyroelectric module 820 on the left burner 910 or the right burner 920 shows that the temperature at one or both burners exceeds a certain temperature, such as 250 degrees Celsius, the data can be sent to the communication module 830. The communication module 830 can then appropriately reduce the heat level of the burner or set it to zero to avoid danger. Therefore, the communication module 830 can transmit the burner temperature to other devices, enabling temperature data monitoring and storage, and also enabling the linkage of multiple devices, making the range hood 100 more intelligent.

[0063] For example, Figure 10As shown, an aiming light emitting device 840 is provided on the chassis assembly 200. There can be one or more aiming light emitting devices 840. The number of aiming light emitting devices 840 can correspond to the number of burners. When two aiming light emitting devices 840 are provided, the aiming light emitting devices 840 can be provided on both sides of the pyroelectric module 820. The aiming light emitting devices 840 can be connected to the control device via a wired or wireless manner. When the range hood 100 is running, the control device controls the aiming light emitting device 840 to emit a light beam aimed at the burners on both sides, and the area illuminated by the light beam is the area where the pyroelectric module 820 collects temperature data. Therefore, the aiming light emitting device 840 makes the temperature collection area visual, making it convenient for users to see whether the burner is within the collection area, and ensure the normal operation of the range hood 100.

[0064] For example, Figure 10 As shown, the chassis assembly 200 is provided with an indicator light 850 electrically connected to the control device. The control device can control the indicator light 850 to indicate the temperature of the left burner 910 and / or the right burner 920 through its display color, brightness, and / or flashing frequency. For example, when the burner temperature is below a first threshold, the indicator light appears blue; when the burner temperature is between the first and second thresholds, the indicator light appears orange; and when the burner temperature exceeds the second threshold, the indicator light appears red. The first threshold is less than the second threshold. The indicator light can be divided into two, indicating the temperature of the left burner 910 and the right burner 920, respectively. This arrangement allows users to intuitively see the current burner temperature, thereby determining the status of the food being cooked and the necessary operations. This reduces the risk of food burning or scorching, making cooking easier. It also reduces the possibility of dangerous accidents such as burner fires, ensuring user cooking safety.

[0065] For example, Figure 5As shown, the first drive mechanism 500 of the range hood 100 is provided with a linear motor 510 and a slide rail 520. The linear motor 510 can be fixed inside the chassis assembly 200 by a threaded connection. The slide rail 520 can be similar to the slide rail used in a drawer. The slide rail 520 includes a fixed portion 521 extending in a vertical direction and a sliding portion 522 that can slide along the fixed portion 521. The fixed portion 521 is fixed inside the chassis assembly 200, for example, by a threaded connection. The sliding portion 522 can be connected to the linear motor 510 and the intermediate air guide plate 330. For example, one end of the sliding portion 522 can be provided with a structure that matches the rotating shaft of the linear motor 510, such as a hole, through which the transmission shaft of the linear motor 510 is connected. The other end of the sliding portion 522 can be fixed to the intermediate air guide plate 330 by three struts 530, and can be slidably connected to the fixed portion 521 by a slide groove or other form. When the drive shaft of linear motor 510 extends, it drives the sliding portion 522 to move downward synchronously along the track of fixed portion 521. This, through the three struts 530, drives the intermediate air guide plate 330 to descend, thereby opening intermediate air inlet 230. Similarly, when the drive shaft of linear motor 510 retracts, it drives the sliding portion 522 to move upward synchronously along the track of fixed portion 521. This, through the three struts 530, drives the intermediate air guide plate 330 to rise, thereby closing intermediate air inlet 230. This arrangement effectively reduces noise generated during the raising and lowering of intermediate air guide plate 330, lowers motion resistance, and thus reduces the power of linear motor 510, achieving energy conservation and emission reduction.

[0066] For example, Figure 6 As shown, the range hood 100 is provided with a fan system 800, which is located inside the chassis assembly 200. The air inlet 810 of the fan system 800 is located directly above the middle air inlet 230. Therefore, the middle air inlet 230 is closest to the air inlet 810, and has the strongest ability to absorb oil smoke. When a large amount of oil smoke is generated, it can be sucked away instantly.

[0067] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front", "back", "up", "down", "left", "right", "horizontal", "vertical", "vertical", "horizontal", "top", "bottom", etc. are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside" and "outside" refer to the inside and outside relative to the outline of each component itself.

[0068] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between one or more components or features shown in the figures and other components or features. It should be understood that spatially relative terms include not only the orientation of the components as described in the figures, but also different orientations during use or operation. For example, if the components in the drawings are inverted as a whole, the situation where the components are "above other components or features" or "above other components or features" will include the situation where the components are "below other components or structures" or "below other components or structures". Thus, the exemplary term "above" may include both the orientations "above" and "below". In addition, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document is intended to include all of these situations.

[0069] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, parts, components and / or combinations thereof.

[0070] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0071] The present invention has been described through the above-described embodiments. However, it should be understood that the above-described embodiments are for illustrative and illustrative purposes only and are not intended to limit the present invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments and that various variations and modifications may be made based on the teachings of the present invention, all of which fall within the scope of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A range hood (100, 100'), comprising a chassis assembly (200), characterized in that: The chassis assembly comprises a left air inlet (210), a right air inlet (220) and a middle air inlet (230), and the range hood further comprises: A middle air guide plate (330) located at the middle air inlet; a first driving mechanism (500) disposed in the chassis assembly, the first driving mechanism being connected to the intermediate air guide plate, the intermediate air guide plate having a raised position and a lowered position under the drive of the first driving mechanism, the intermediate air guide plate closing the intermediate air inlet when in the raised position, and opening the intermediate air inlet when in the lowered position; A pyrolysis module (820) provided on the chassis assembly (200) is used to collect temperature data at the left burner (910) and the right burner (920); and A control device connected to the pyroelectric module and the first driving mechanism (500); Wherein, the control device is used for: When it is determined based on the temperature data that the temperature at either the left burner (910) or the right burner (920) is greater than a third temperature threshold, controlling the first driving mechanism (500) to open the middle air guide plate (330), the third temperature threshold being greater than the first temperature threshold and greater than the second temperature threshold; or When it is determined based on the temperature data that the temperatures at the left burner and the right burner are both greater than the third temperature threshold, controlling the first driving mechanism to open the middle air guide plate; or When it is determined based on the temperature data that the sum of the temperatures at the left burner and the right burner is greater than a fourth temperature threshold, the first drive mechanism is controlled to open the middle air guide plate, and the fourth temperature threshold is greater than the first temperature threshold and greater than the second temperature threshold.

2. The range hood according to claim 1, wherein: The range hood further comprises a left air guide plate (310) located at the left air inlet (210) and a right air guide plate (320) located at the right air inlet (220). The range hood further comprises a second driving mechanism located in the chassis assembly (200), the second driving mechanism being connected to the left air guide plate and the right air guide plate. The left air guide plate and the right air guide plate have an open position and a closed position under the drive of the second driving mechanism. When the left air guide plate and the right air guide plate are in the open position, the left air inlet and the right air inlet are opened respectively. When the left air guide plate and the right air guide plate are in the closed position, the left air inlet and the right air inlet are closed respectively.

3. The range hood according to claim 2, wherein: The second driving mechanism comprises: a left flipping mechanism (600) connected to the left air deflector (310), the left flipping mechanism driving the left air deflector to flip between its open position and its closed position; or / and A right flipping mechanism (700) is connected to the right air guide plate (320), and the right flipping mechanism drives the right air guide plate to flip between its open position and closed position.

4. The range hood according to claim 3, wherein: in The turning axis of the left air guide plate (310) is located at its left edge, and the left air guide plate turns toward the interior of the chassis assembly (200) to its open position; or / and The flip axis of the right air guide plate (320) is located at its right edge, and the right air guide plate flips toward the interior of the chassis assembly to its open position.

5. The range hood according to claim 3, wherein: The left air guide plate (310) and / or the right air guide plate (320) are hinged to the chassis assembly (200).

6. The range hood according to claim 3, wherein: Each of the left flipping mechanism (600) and the right flipping mechanism (700) comprises: a motor (610) fixed in the chassis assembly (200); a first transmission rod (620) having a first end (621) and a second end (622), the first end being connected to the rotating shaft of the motor; and A second transmission rod (630) has a third end (631) and a fourth end (632), wherein the third end is pivotally connected to the second end, and the fourth end is pivotally connected to the corresponding left air deflector (310) or right air deflector (320).

7. The range hood according to claim 6, wherein: Each of the left flip mechanism (600) and the right flip mechanism (700) further includes a mounting base (640), the mounting base including a side plate (641) and a horizontal plate (642), the side plate being tightly attached to the side wall of the chassis assembly (200), the horizontal plate being vertically connected to the side plate, the motor (610) being fixed in a space between the side plate and the horizontal plate, and the rotating shaft of the motor passing through the horizontal plate being connected to the first transmission rod (620).

8. The range hood according to claim 2, wherein: The range hood further comprises an oil net (400), the oil net comprising a bottom wall (410) and a left side wall (420) and a right side wall (430) extending upward from left and right edges of the bottom wall, the left side wall and the right side wall forming the left air inlet (210) and the right air inlet (220) respectively, and the bottom wall forming the middle air inlet (230).

9. The range hood according to claim 8, wherein: The oil net (400') further comprises a left front wall (421) and a left rear wall (422), as well as a right front wall (431) and a right rear wall (432), wherein The left front wall and the left rear wall extend leftward from the front edge and the rear edge of the left side wall (420), respectively, and the left wind deflector (310) covers the area surrounded by the left front wall, the left rear wall, and the upper edge of the left side wall when it is in its open position; and The right front wall and the right rear wall extend rightward from the front edge and the rear edge of the right side wall (430), respectively. When the right wind deflector (320) is in its open position, it covers the area surrounded by the right front wall, the right rear wall and the upper edge of the right side wall.

10. The range hood according to claim 2, wherein: The range hood is provided with an inclined left top wall (440) and a right top wall (450), which are respectively parallel to the left air guide plate (310) and the right air guide plate (320) in the open position; the left air guide plate and the right air guide plate are respectively in close contact with the left top wall and the right top wall when in the open position.

11. The range hood according to claim 2, wherein: The control device is further connected to the second driving mechanism, so as to control the second driving mechanism to open or close the corresponding air guide plate based on the temperature data.

12. The range hood according to claim 11, wherein: The control device is further specifically used for: When it is determined based on the temperature data that the temperature at the left furnace head (910) is greater than the first temperature threshold, controlling the second driving mechanism to open the left air guide plate (310); and When it is determined based on the temperature data that the temperature at the right furnace head (920) is greater than the second temperature threshold, the second driving mechanism is controlled to open the right air guide plate (320).

13. The range hood according to claim 11, wherein: The range hood further comprises a communication module (830), the communication module being connected to the control device, and the control device being used to send the temperature data to the cooker via the communication module.

14. The range hood according to claim 11, wherein: The chassis assembly (200) is provided with an aiming light emitter (840), which is connected to the control device. The control device is used to control the aiming light emitter to emit a light beam that illuminates a collection area of the temperature data when the pyroelectric module (820) collects the temperature data.

15. The range hood according to claim 11, wherein: An indicator light (850) is provided on the chassis assembly (200), and the indicator light is connected to the control device, and the control device is used to control the indicator light to indicate the temperature of the left burner (910) and the right burner (920) based on the temperature data.

16. The range hood according to claim 1, wherein: The first driving mechanism (500) comprises: a linear motor (510) fixed in the chassis assembly (200); A slide rail (520) having a fixed portion (521) extending in a vertical direction and a sliding portion (522) slidable along the fixed portion, the fixed portion being fixed in the chassis assembly, the sliding portion being connected to the linear motor and the intermediate air guide plate (330), and the linear motor driving the intermediate air guide plate to rise and fall via the sliding portion.

17. The range hood according to claim 1, wherein: The range hood comprises a fan system (800), the fan system being located within the chassis assembly (200), and the air inlet (810) of the fan system being located directly above the middle air inlet (230).

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