Range hood and control method thereof

Abstract

The present invention provides a range hood and a control method thereof, belonging to the technical field of kitchen appliances. The range hood includes a shell assembly and a smoke collecting plate assembly, the shell assembly includes an outer shell and a smoke collecting hood, the smoke collecting hood and the shell together enclose a smoke collecting chamber, and the top thickness of the shell assembly is greater than the thickness of its bottom; the smoke collecting plate assembly is rotatably connected to the front side of the shell assembly, and the inner side surface of the smoke collecting plate assembly is provided with a plurality of open grooves, wherein, when the smoke collecting plate assembly is configured to be in a closed state, the inner side surface of the smoke collecting plate assembly abuts against the outer surface of the shell assembly, and the open grooves and the outer surface of the shell assembly enclose a connecting exhaust channel, and the exhaust channel connects the smoke collecting chamber and the outside. The present invention can effectively improve the suction and exhaust efficiency and capacity, form a larger smoke collecting area, improve the oil smoke suction and exhaust capacity, and prevent the adhesion of a large amount of oil stains.

Description

Technical Field

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

[0002] With the continuous iteration of new forms and new appearances of products in the industry, more and more ultra-thin-wall embedded range hood products have appeared on the market. Ultra-thin means that the size of the range hood's shell and air inlet channel is compressed, and the reduction in the thickness of the air inlet channel will lead to a weakening of the ability to absorb and exhaust oil fumes. In response to the adverse effects of smoke exhaust caused by the reduction in shell thickness, the conventional design is to add a flip smoke collection plate on the front side of the range hood shell. The smoke collection plate is opened to expand the negative pressure area forward to enhance the smoke collection effect, thereby improving the smoke exhaust effect. However, the shell thickness of conventional ultra-thin-wall embedded range hoods is mostly over 130mm. Before the oil smoke is sucked into the air inlet channel, part of the oil smoke is blocked by the shell, resulting in an unsmooth air intake streamline, which easily causes the oil smoke to escape and the exhaust effect is poor. After long-term use, a large amount of oil stains are easily adhered to the back side of the smoke collection plate, causing the oil stains to drip and contaminate the stove. Therefore, there is a need for a range hood that increases the smoke collection area and improves the oil smoke suction and exhaust capacity. Summary of the Invention

[0003] The first technical problem to be solved by the present invention is to provide a range hood that can effectively improve the suction and exhaust efficiency and capacity, form a larger smoke collection area, improve the oil fume suction and exhaust capacity and prevent the adhesion of a large amount of oil stains based on the current status of the existing technology.

[0004] The second technical problem to be solved by the present invention is to provide a control method applied to the range hood.

[0005] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: a range hood, the range hood comprising:

[0006] The housing assembly comprises an outer shell and a smoke collecting hood, wherein the smoke collecting hood and the outer shell are jointly arranged to form a smoke collecting chamber, and the thickness of the top of the housing assembly is greater than the thickness of the bottom thereof;

[0007] A smoke collecting plate assembly is rotatably connected to the front side of the shell assembly, and a plurality of open grooves are provided on the inner side surface of the smoke collecting plate assembly, wherein when the smoke collecting plate assembly is configured to be in a closed state, the inner side surface of the smoke collecting plate assembly abuts against the outer surface of the shell assembly, and the open grooves and the outer surface of the shell assembly are surrounded to form a connecting exhaust channel, and the exhaust channel connects the smoke collecting chamber and the outside.

[0008] According to one embodiment of the present invention, the cigarette holding plate assembly includes a cigarette holding plate, a lining plate, and a back plate connected in sequence from the outside to the inside, and a first groove recessed backward is provided in the middle of the back plate. When the cigarette holding plate assembly is configured in a closed state, the bottom of the first groove can abut against the front end of the housing assembly, so that the cigarette holding plate assembly is suspended on the front side of the housing assembly.

[0009] Wherein, the bottom of the first groove is recessed toward the lining plate to form a plurality of open grooves.

[0010] According to one embodiment of the present invention, a hinge assembly is connected between the smoke collecting plate assembly and the smoke collecting hood, and the hinge assembly includes:

[0011] A first bracket includes a connecting portion and a fixing portion, wherein the connecting portion is connected between the top wall and the side wall of the smoke collecting hood, and the fixing portion is fixed to the connecting portion;

[0012] a rotating arm, one end of which is fixedly connected to the fixing portion;

[0013] A second bracket is fixed to the smoke collecting plate assembly;

[0014] The rotating shaft assembly is connected between the second bracket and the rotating arm so that the second bracket and the other end of the rotating arm are rotatably connected.

[0015] According to an embodiment of the present invention, the connecting portion includes a top plate connected to the smoke hood, a front end of the top plate is bent downward to form a first flange, and the first flange is connected to the front side wall of the smoke hood.

[0016] According to one embodiment of the present invention, the fixing portion includes:

[0017] a vertical plate, vertically connected between the top plate and the first flange;

[0018] A fixed arm has one end connected to the lower portion of the vertical plate on one side close to the first flange, and the other end extending toward the direction of the rotating arm.

[0019] According to one embodiment of the present invention, the second bracket includes:

[0020] An L-shaped plate fixed to the front side of the lining plate, the lining plate being provided with an L-shaped groove corresponding to the L-shaped plate, the L-shaped plate being inserted into and connected to the L-shaped groove;

[0021] a connecting arm connected to a side of the vertical section of the L-shaped plate close to the rotating arm and passing through the lining plate, wherein the connecting arm is rotatably connected to the rotating arm;

[0022] The L-shaped block is connected to the horizontal section of the L-shaped plate, passes through the lining plate, and is fixed to the front side of the back plate.

[0023] According to one embodiment of the present invention, the smoke collecting plate assembly further includes a U-shaped frame, and the U-shaped frame is located between the lining plate and the back plate, and is sleeved on the outer periphery of the rotating arm.

[0024] According to one embodiment of the present invention, the lining plate and the smoke collecting plate are glued together, and the lining plate is further provided with at least one boss and / or an exhaust hole for weight reduction and exhaust during the gluing process;

[0025] The boss is provided below the lining plate and protrudes toward the first groove, and the boss is screw-connected to the bottom of the first groove.

[0026] According to one embodiment of the present invention, the range hood further comprises:

[0027] The switch assembly is detachably connected to the lining plate. The lining plate is further provided with a first mounting hole corresponding to the switch assembly. The switch assembly is inserted into the first mounting hole and abuts against the back of the smoke collecting plate.

[0028] According to one embodiment of the present invention, the bottom of the first groove is recessed forward in an area corresponding to the switch assembly to form a second groove, and a second mounting hole corresponding to the switch assembly is formed in the bottom of the second groove, and the switch assembly is inserted into the first groove and the first mounting hole through the second mounting hole;

[0029] The bottom of the second groove is connected to a mounting plate, and the mounting plate cover is arranged on a side of the second mounting hole away from the switch assembly.

[0030] According to one embodiment of the present invention, the range hood further includes a driving assembly for driving the smoke collecting plate assembly to rotate, the driving assembly includes a motor and a connecting rod assembly, the housing of the motor is fixed to the outer casing, and the connecting rod assembly connects the motor end of the motor and the back plate.

[0031] According to one embodiment of the present invention, the range hood further comprises:

[0032] a smoke sensor connected to the bottom of the housing assembly;

[0033] A temperature sensor is connected to the rear side of the cigarette collecting plate assembly to detect the temperature of the cigarette collecting plate assembly.

[0034] The technical solution adopted by the present invention to solve the second technical problem is: a range hood control method, the range hood control method comprising:

[0035] After the stove is ignited, the fan is started and the current fire power is monitored in real time;

[0036] If the current firepower is greater than the preset gear, the smoke collecting plate is opened; if the current firepower is less than or equal to the preset gear, the smoke collecting plate is closed;

[0037] When the smoke collecting plate is closed, the smoke escape amount and the temperature of the smoke collecting plate are detected to obtain a smoke amount value and a first detected temperature value respectively; if the smoke amount value is greater than a preset smoke value or the first detected temperature is greater than its preset temperature, the smoke collecting plate is opened; if the smoke amount value is less than or equal to the preset smoke value and the first detected temperature is less than or equal to its preset temperature, the current state is maintained;

[0038] When the smoke collecting plate is opened, the temperature of the smoke collecting plate is continuously measured to obtain a second detected temperature. If the second detected temperature is greater than the preset temperature, the air volume of the fan is increased to the maximum air volume until the second detected temperature drops to the preset temperature, and the fan maintains the maximum air volume operation; if the second detected temperature is less than or equal to the preset temperature, the fan maintains the current state;

[0039] After the air volume of the fan is increased, the temperature of the smoke collecting plate needs to be further detected until the second detected temperature drops to its preset temperature.

[0040] According to one embodiment of the present invention, when the second detected temperature is less than or equal to the preset temperature, the method further comprises:

[0041] Obtaining a third detected temperature at a preset time interval;

[0042] If the third detected temperature remains unchanged, the current air volume is maintained;

[0043] If the third detected temperature continues to decrease, and the decrease between the current value of the third detected temperature and the previous detected value reaches 20%, the air volume of the fan is reduced by one level until the air volume of the fan is reduced to the lowest level;

[0044] If the third detected temperature continues to rise after being lowered, and the increase between the current value of the third detected temperature and the previous detected value reaches 20%, the air volume of the fan is increased by one level until the air volume of the fan is adjusted to the highest level.

[0045] Compared with the prior art, the present invention has the following advantages or beneficial effects:

[0046] The front wall of the housing of the present invention tilts backward from top to bottom, allowing the air inlet to extend further downward, closer to the smoke source, resulting in a smoother air flow and effectively improved suction and exhaust efficiency. The smoke collecting plate assembly creates a larger smoke collecting area, enhancing fume suction and exhaust capabilities and preventing the adhesion of large amounts of oil and dirt. The opening slots allow the smoke collecting plate assembly to exhaust smoke even when closed, as long as the fan is turned on. This meets the needs of Western cooking with low levels of fume and users using multi-layer steamers, which require special cooking space below the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The above and other features and advantages of the present invention will become more apparent by describing in detail example embodiments thereof with reference to the accompanying drawings.

[0048] Figure 1 is a schematic diagram of a range hood according to an exemplary embodiment.

[0049] Figure 2 FIG. 1 is a diagram showing a working state of a range hood according to an exemplary embodiment.

[0050] Figure 3 yes Figure 2 Cross-sectional view in longitudinal direction.

[0051] Figure 4 1 is a schematic diagram showing the connection between a hinge structure, a housing assembly and a smoke collecting plate assembly according to an exemplary embodiment.

[0052] Figure 5 FIG1 is a schematic diagram showing the connection between the cigarette collecting plate assembly and the hinge assembly according to an exemplary embodiment.

[0053] Figure 6 FIG. 1 is an exploded view of a cigarette collecting plate assembly and a hinge assembly according to an exemplary embodiment.

[0054] Figure 7 1 is a connection diagram of a smoke collecting plate, a lining plate and a hinge assembly according to an exemplary embodiment.

[0055] Figure 8 FIG. 1 is a connection diagram of a hinge assembly according to an exemplary embodiment.

[0056] Figure 9 FIG. 1 is a first exploded schematic diagram illustrating a hinge assembly according to an exemplary embodiment.

[0057] Figure 10 FIG. 1 is a first exploded schematic diagram illustrating a hinge assembly according to an exemplary embodiment.

[0058] Figure 11 is a flowchart showing a control method according to an exemplary embodiment. Description of the drawings:

[0060] 1. Shell assembly; 11. Housing; 12. Fume hood;

[0061] 2. Smoke collecting plate assembly; 20. Opening slot; 21. Smoke collecting plate; 22. Lining plate; 221. L-shaped slot; 222. Boss; 223. Exhaust hole; 224. First mounting hole; 225. First through hole; 226. Second through hole; 227. Raised rib; 23. Back plate; 231. First groove; 24. U-shaped frame; 232. Second groove; 233. Second mounting hole; 234. Mounting plate; 235. Third through hole;

[0062] 3. Hinge assembly; 31. First bracket; 311. Connecting portion; 3111. Top plate; 3112. First flange; 312. Fixing portion; 3121. Vertical plate; 31211. Second flange; 31212. Third flange; 31213. Reinforcing rib; 3122. Fixed arm; 32. Rotating arm; 33. Second bracket; 331. L-shaped plate; 332. Connecting arm; 333. Mounting block; 34. Rotating shaft assembly;

[0063] 4. Switch assembly;

[0064] 5. Drive assembly; 51. Motor; 52. Connecting rod assembly;

[0065] 6. Fan. DETAILED DESCRIPTION

[0066] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0067] The terms "a", "an", "the", "" are used to indicate that there are one or more elements / components / etc.; the terms "including" and "having" are used to express open-ended inclusion and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc.

[0068] The embodiment of the present invention provides a range hood, such as Figure 1-10As shown, the range hood includes a shell assembly 1, including an outer shell 11 and a smoke collecting hood 12, the smoke collecting hood 12 and the shell 11 are jointly arranged to form a smoke collecting chamber, and the front wall of the shell 11 is inclined backward from top to bottom so that the top thickness of the shell assembly 1 is greater than the bottom thickness thereof; a smoke collecting plate assembly 2 is rotatably connected to the front side of the shell assembly 1, and the inner side surface of the smoke collecting plate assembly 2 is provided with a plurality of open grooves 20, wherein, when the smoke collecting plate assembly 2 is configured to be in a closed state, the inner side surface of the smoke collecting plate assembly 2 abuts against the outer surface of the shell assembly 1, and the open grooves 20 and the outer surface of the shell assembly 1 are arranged to form a connecting exhaust channel, and the exhaust channel connects the smoke collecting chamber and the outside.

[0069] like Figure 1-6 The outer side of the housing 11 is provided with an openable and closable smoke collecting plate assembly 2, and a smoke collecting hood 12 is provided on the rear side of the smoke collecting plate 21. The smoke collecting hood 12 divides the housing 11 into two independent upper and lower parts. In this way, the oil smoke is concentrated only in the smoke collecting chamber. The smoke collecting plate assembly 2 is turned outward. When the smoke collecting plate 21 is opened, the air inlet corresponds to the oil smoke position below, which can quickly absorb the oil smoke generated from the left and right directions. In this way, the oil smoke during cooking rises and enters the range hood air duct directly through the above-mentioned air inlet, achieving a smoke collection effect. The range hood in this application is a side-suction and ultra-thin range hood. The overall form of the present application is a side suction structure. The front wall of the shell 11 is inclined backward from top to bottom, that is, the lower side of the front wall of the shell 11 is inclined toward the wall. The thickness of the upper part of the shell is T, and the thickness of the lower part is D. T>2D. The shell 11 has a structure that is wide at the top and narrow at the bottom. Compared with the traditional ultra-thin flat embedded structure, the air inlet is further downward, closer to the smoke source, making the air intake streamline smoother, and the suction and exhaust efficiency and capacity are effectively improved.

[0070] In the prior art, when the smoke collecting plate 21 is closed, the smoke collecting plate 21 is inserted into the outer shell 11 and the surface of the smoke collecting plate 21 is aligned with the surface of the outer shell 11; the improvement of the present application is that the smoke collecting plate assembly 2 is located in front of the outer shell 11 even when it is closed, that is, the smoke collecting plate assembly 2 is higher than the outer shell 11 by a certain distance H after installation, instantly forming a floating effect higher than the outer shell 11. In this way, the smoke collecting plate 21 rotates outward around the hinge assembly 3 to a set angle. Compared with the traditional smoke collecting plate 21, the smoke collecting area of ​​this solution is increased by H*W when the smoke collecting plate 21 is opened at the same angle. Setting the width of the smoke collecting plate 21 to W can form a larger smoke collecting area to prevent oil smoke from escaping. In addition, after the smoke collecting plate assembly 2 is opened, the distance between the back panel 23 and the air inlet is increased by H compared to conventional range hoods, which reduces the probability of the back panel 23 coming into contact with oil smoke, reduces the amount of adhered oil stains, and reduces the risk of oil stains dripping. In addition, by setting an open groove 20 on the rear side of the smoke collecting plate assembly 2, preferably there are three open grooves 20, respectively on the left side, right side and bottom of the smoke collecting plate assembly 2. In this way, even if the smoke collecting plate 21 is closed, the smoke can be discharged from the exhaust channel between the open groove 20 and the outer shell 11 by turning on the fan 6, meeting the needs of Western cooking with less smoke and users using multi-layer steamers and other scenarios with special requirements for the cooking space below the range hood.

[0071] In a preferred embodiment of the present invention, Figure 1-7 The illustrated cigarette collecting plate assembly 2 includes a cigarette collecting plate 21, a lining plate 22, and a back plate 23, connected sequentially from the outside to the inside. A first recessed groove 231 is provided in the middle of the back plate 23. When the cigarette collecting plate assembly 2 is in the closed position, the bottom of the first recessed groove 231 can abut the front end of the housing assembly 1, allowing the cigarette collecting plate assembly 2 to be suspended from the front side of the housing assembly 1. The bottom of the first recessed groove 231 is recessed toward the lining plate 22 to form a plurality of open grooves 20. Since the conventional cigarette collecting plate assembly 2 is only as thick as a glass panel, in order to set the cigarette collecting plate assembly 2 to a certain thickness, the present application achieves a thicker effect by using the lining plate 22 and back plate 23. First, a first recessed groove 231 is provided in the middle of the back plate 23. The rear side of the bottom of the first recessed groove 231 can abut the front side of the housing 11 when the cigarette collecting plate assembly 2 is in the closed position, allowing the cigarette collecting plate assembly 2 to be suspended above the front side of the housing 11 and at a certain distance H. In addition, by providing a plurality of opening grooves 20 on the back plate 23, the open end of each opening groove 20 abuts against the surface of the shell 11 and forms an exhaust channel therewith. Specifically, the bottom of the first groove 231 is recessed forward to form an opening groove 20 with the opening facing the rear side of the smoke collecting plate 21, so that when the smoke collecting plate 21 is closed, smoke can be exhausted even if the smoke collecting machine 21 is not turned on. Preferably, the present application provides opening grooves 20 on the left, right and bottom of the smoke collecting plate assembly 2 (such as Figure 1-6 This can optimize the smoke exhaust path and enhance the smoke exhaust effect.

[0072] In a preferred embodiment of the present invention, Figure 1-10 A hinge assembly 3 is shown connected between the smoke collecting plate assembly 2 and the smoke collecting hood 12. The hinge assembly 3 includes a first bracket 31, a rotating arm 32, a second bracket 33, and a rotating shaft assembly 34. The first bracket 31 includes a connecting portion 311 and a fixing portion 312. The connecting portion 311 is connected between the top wall and the side wall of the smoke collecting hood 12, and the fixing portion 312 is fixed to the connecting portion 311. One end of the rotating arm 32 is fixed to the fixing portion 312, and the second bracket 33 is fixed to the smoke collecting plate assembly 2. The rotating shaft assembly 34 is connected between the second bracket 33 and the rotating arm 32 to enable the second bracket 33 to be rotatably connected to the other end of the rotating arm 32. The rotating shaft assembly 34 includes rivets, plastic bushings, and plastic washers. The rotating shaft assembly 34 between the second bracket 33 and the rotating arm 32 is riveted together through a riveting process. Through the cooperation of the first bracket 31, the rotating arm 32, the second bracket 33 and the rotating shaft group / 34, not only can the rotation of the cigarette collecting plate assembly 2 be realized, but also the first bracket 31 and the outer shell 11 are fixed on both sides. Compared with the single-sided fixing method, the structural stability of the bracket is improved, and it can also prevent the cigarette collecting plate 21 from being deformed by external force when rotating around the rotating shaft assembly 34, causing the cigarette collecting plate 21 to open and close unsmoothly.

[0073] In a preferred embodiment of the present invention, Figure 4-10 The connecting portion 311 shown includes a top plate 3111 connected to the smoke hood 12. The front end of the top plate 3111 is bent downward to form a first flange 3112, and the first flange 3112 is connected to the front side wall of the smoke hood 12. The top plate 3111 and the first flange 3112 of the present application are respectively fixed to the top wall and side wall of the range hood housing 11, thereby improving the connection stability between the first bracket 31 and the range hood housing 11, ensuring smooth opening and closing of the smoke collecting plate 21, and improving the user experience.

[0074] In a preferred embodiment of the present invention, Figure 4-10 The fixed portion 312 shown includes a vertical plate 3121 and a fixed arm 3122. The vertical plate 3121 is vertically connected between the top plate 3111 and the first flange 3112. One end of the fixed arm 3122 is connected to the lower portion of the vertical plate 3121 near the first flange 3112, and the other end of the fixed arm 3122 extends toward the rotating arm 32. The force applied during the opening and closing of the smoke collecting plate 21 is transmitted to the vertical plate 3121 through the fixed wall 3122. By interconnecting the top plate 3111, the first flange 3112, and the vertical plate 3121 and then connecting them to the range hood housing 11, a stable triangular structure is formed, effectively improving the structural strength and stability of the first bracket 31.

[0075] Preferably, the side of the vertical plate 3121 away from the fixed arm 3122 is bent toward the interior of the housing 11 to form a second flange 31211, and the bottom of the vertical plate 3121 is bent toward the interior of the housing 11 to form a third flange 31212. The second flange 31211 and the third flange 31212 can enhance the structural strength of the vertical plate 3121 itself, preventing deformation of the cigarette collecting plate 21 after repeated opening and closing.

[0076] Preferably, the vertical plate 3121 is provided with reinforcing ribs 31213. This application utilizes sheet metal profiling to provide reinforcing ribs 31213 in the middle portion of the vertical plate 3121 to increase the structural strength of the vertical plate 3121. The reinforcing ribs 1213 can be provided on either or both of the inner and outer sides of the vertical plate 3121, as long as they enhance the mechanical strength of the vertical plate 3121. This application is not limited thereto.

[0077] In a preferred embodiment of the present invention, Figure 4-10 The second bracket 33 shown includes an L-shaped plate 331, a connecting arm 332 and an L-shaped block 333. The L-shaped plate 331 is fixed to the front side of the lining plate 22. The lining plate 22 is provided with an L-shaped groove 221 corresponding to the L-shaped plate 331. The L-shaped plate 331 is inserted into and connected to the L-shaped groove 221. The connecting arm 332 is connected to the vertical section of the L-shaped plate 331 on the side close to the rotating arm 32 and passes through the lining plate 22. The connecting arm 332 and the rotating arm 32 are rotatably connected. The L-shaped block 333 is connected to the horizontal section of the L-shaped plate 331 and passes through the lining plate 22, and is fixed to the front side of the back plate 23. The present application connects the second bracket 33 between the lining plate 22 and the back plate 23, and then combines the cigarette collecting plate 21, the lining plate 22 and the back plate 23 together, effectively improving the connection strength of the cigarette collecting plate assembly 2 and the second bracket 33, and improving the stability of the hinge assembly 3.

[0078] The lining plate 22 is provided with a first through hole 225 corresponding to the connecting arm 332, the back plate 23 is provided with a third through hole 235 corresponding to the connecting arm 332, and the lining plate 22 is further provided with a second through hole 226 corresponding to the mounting block 333. The connecting arm 332 passes through the first through hole 235 and the third through hole 235 and is connected to the rotating arm 32, and the mounting block 333 passes through the second through hole 226 and is fixed to the back plate 23. The L-shaped plate 331 is inserted into the L-shaped slot 221, the connecting arm 332 passes through the first through hole 225 and the third through hole 235 in sequence, and the mounting block 333 passes through the second through hole 226. After the second bracket 33 is connected to the lining plate 22, the lining plate 22 is glued and fixed to the cigarette collecting plate 21, the connecting arm 332 is connected to the rotating arm 32, the mounting block 333 is connected to the back plate 23, and the back plate 23 is screwed to the boss 222. This completes the connection between the second bracket 33 and the cigarette collecting plate assembly 2. Next, the hinge assembly's rotating arm 32 is fastened to the fixed arm 3122 on the first bracket 31 with screws, completing the installation of the cigarette collecting plate assembly 2 and the housing 11. This ensures smooth opening and closing of the cigarette collecting plate 21. Preferably, the L-shaped plate 331 is loosely fitted within the L-shaped groove 221, facilitating the connection between the L-shaped plate 331, the lining plate 22, and the cigarette collecting plate 21.

[0079] In a preferred embodiment of the present invention, Figure 6-7 The illustrated smoke collecting plate assembly 2 further includes a U-shaped frame 24, which is located between the lining plate 22 and the back plate 23 and is sleeved around the outer periphery of the rotating arm 32. The U-shaped frame 24 of the present application can support the lining plate 22 and the back plate 23, and because it is sleeved around the outer periphery of the rotating arm 32, it can also shield the hinge assembly 3.

[0080] In a preferred embodiment of the present invention, Figure 1-7 The liner 22 shown is glued to the smoke collecting plate 21. The liner 22 also has at least one boss 222 and / or vent holes 223 for weight reduction and exhaust during the gluing process. The boss 222 is located below the liner 22 and protrudes toward the first groove 231. The boss 222 is screwed to the bottom of the first groove 231. In this application, the liner 22 is fixed to the smoke collecting plate 21 by glue. The vent holes 223 not only reduce the weight of the smoke collecting plate assembly 2 but also allow for the exhaust of the glue. The boss 222 not only enhances the structural strength of the liner 22 but also allows for screw fastening to the back plate 23, increasing the contact area and securing effect between the liner 22 and back plate 23. Furthermore, the four corners of the back plate 23 are contacted with the smoke collecting plate 21 by rubber pads on the boss 22 of the liner 22. Therefore, the liner 22 must include at least one of the boss 222 and the vent hole 223.

[0081] Preferably, a convex rib 227 is also provided on the lining plate 22. The convex rib 227 of the present application is a long strip-shaped groove structure formed by the lining plate 22 backward during injection molding and lamination. On the one hand, it can enhance the strength of the lining plate 22. On the other hand, by injecting colloid on the side of the convex rib 227 close to the smoke collecting plate 2, the bonding strength between the lining plate 22 and the smoke collecting plate 21 can be effectively increased.

[0082] In a preferred embodiment of the present invention, Figure 6-7 The illustrated range hood also includes a switch assembly 4, which is detachably connected to a liner 22. Liner 22 also defines a first mounting hole 224 corresponding to switch assembly 4. Switch assembly 4 is inserted into first mounting hole 224 and abuts the back of smoke control panel 21. The display screen of switch assembly 4 abuts against smoke control panel 21. Since smoke control panel 21 is typically made of glass, it displays some of the functions of switch assembly 4 and facilitates operation, enhancing the technological feel of smoke control panel 21.

[0083] In a preferred embodiment of the present invention, Figure 4-10 The bottom of the first groove 231 shown is recessed forward in the area corresponding to the switch assembly 4 to form a second groove 232. A second mounting hole 233 corresponding to the switch assembly 4 is defined at the bottom of the second groove 232. The switch assembly 4 is inserted into the first groove 231 and the first mounting hole 224 through the second mounting hole 233. A mounting plate 234 is connected to the bottom of the second groove 232. The mounting plate 234 covers the side of the second mounting hole 233 away from the switch assembly 4. After the lining plate 22 and the cigarette collecting plate 21 are hinged, the switch assembly 4 is connected to the lining plate 22, and then the back plate 23 is assembled with the lining plate 22. Finally, the mounting plate 234 is inserted into the bottom of the second groove 232. The second groove 232 can limit and fix the mounting plate 234, and can also place the mounting plate 234 close to the switch assembly 4, making it easier to connect it to the switch assembly 4 and facilitate subsequent maintenance of the switch assembly 4.

[0084] In a preferred embodiment of the present invention, Figure 1-4 The range hood shown also includes a drive assembly 5 for driving the smoke collecting plate assembly 2 to rotate. The drive assembly 5 includes a motor 51 and a connecting rod assembly 52. ​​The shell of the motor 51 is fixed to the outer shell 11, and the connecting rod assembly 52 connects the motor end of the motor 51 and the back plate 23. The drive assembly 5 of the present application is arranged in the middle position of the entire machine outer shell 11. The shell of the motor 51 is fixed to the back plate of the outer shell 11 and is fixed to the smoke collecting plate assembly 2 through the connecting rod assembly 52, so that the drive assembly 5 is fixed to the entire machine outer shell 11 and the smoke collecting plate assembly 2. Since the drive assembly 5 is located in the middle position, the left and right sides of the smoke collecting plate assembly 2 are evenly stressed during movement, and the gap between the smoke collecting plate assembly 2 and the left and right sides of the outer shell 11 is even when the smoke collecting plate assembly 2 is closed, which can avoid the situation where one side is closed tightly while the other side is not closed in place.

[0085] In a preferred embodiment of the present invention, Figure 1-4 The range hood shown also includes a smoke sensor and a temperature sensor. The smoke sensor is connected to the bottom of the housing assembly 1 and is used to monitor the amount of oil smoke. When the amount of oil smoke exceeds the normal range, it can be linked to the control module, and the control module can drive the smoke collecting plate assembly 2 to open to increase the smoke exhaust effect. In addition, a temperature sensor is connected to the back side of the smoke collecting plate assembly 2 to detect the temperature of the smoke collecting plate assembly 2. Because when the range hood is in the state where the fan 6 is turned on and the smoke collecting plate assembly 2 is turned off, the smoke collecting plate 21 is close to the cooking area and is subject to high heat radiation generated by the cooking stove. The surface temperature of the smoke collecting plate assembly 2 rises rapidly. When it rises to a certain level, it is easy to cause the glass to burn and crack, and the switch to malfunction due to high temperature. Therefore, it is necessary to measure the temperature of the smoke collecting plate. When the temperature of the smoke collecting plate assembly 2 is too high, the smoke collecting plate assembly 2 is opened in time to keep the smoke collecting plate assembly 2 away from the heat source. The air volume of the fan 6 can also be increased to increase the exhaust to achieve the effect of cooling the surface of the smoke collecting plate assembly 2 and preventing the glass from cracking and the switch from being damaged by high temperature.

[0086] The embodiment of the present invention provides a control method for a range hood, such as Figure 11 The control methods shown include:

[0087] Step s100: After the stove is ignited, the fan 6 is activated and the current heat level is monitored in real time. The range hood control module is connected to the stove via Bluetooth, WiFi, or other means. When the range hood control module detects that the stove is ignited, it activates the fan 6 and monitors the stove's current heat level A in real time. The current heat level A is compared with a preset level A0, and the possible cooking methods and amount of oil smoke generated can be predicted based on the different heat levels.

[0088] Step 200: If the current firepower is greater than the preset gear, the smoke collecting plate 21 is opened; if the current firepower is less than or equal to the preset gear, the smoke collecting plate 21 is closed. The preset gear A0 in this application is preferably medium or high heat. Generally, food is processed by stir-frying, frying, or deep-frying at medium or high heat, and a large amount of oil smoke will be generated in this process. If the oil smoke cannot be completely exhausted only through the gap between the smoke collecting plate 21 and the shell 11, that is, the smoke inlet channel, then it is necessary to open the smoke collecting plate 21 for exhaust. If the current firepower A is low or micro heat, it can be suitable for scenarios where the amount of oil smoke in Western cooking is small and users use multi-layer steamers and have special requirements for the cooking space below the range hood. In this application, it is only necessary to turn on the fan 6 and use the smoke inlet channel between the smoke collecting plate 21 and the shell 11 to absorb the cooking gas. Of course, a switch button that only turns on the fan without turning on the smoke collecting plate 21 can also be set on the range hood operator, and the user can turn on this function with one button.

[0089] Step 300: When the smoke collecting plate 21 is closed, the smoke escape amount and the temperature of the smoke collecting plate 21 are detected and the smoke amount value and the first detection temperature value are obtained respectively. If the smoke amount value is greater than the preset smoke value or the first detection temperature is greater than its preset temperature, the smoke collecting plate 21 is opened; if the smoke amount value is less than or equal to the preset smoke value and the first detection temperature is less than or equal to its preset temperature, the current state is maintained.

[0090] When the smoke collecting plate 21 is closed, and when the range hood is in the state where the fan 6 is started and the smoke collecting plate 21 is closed, the smoke collecting plate 21 is close to the cooking area and is subject to high heat radiation generated by the cooking stove. The surface temperature of the smoke collecting plate 21 rises rapidly. When it rises to a certain level, it is easy to cause the glass to be scalded or broken, and the switch to be damaged by high temperature and malfunction. Therefore, it is also necessary to measure the temperature of the smoke collecting plate 21. The switch assembly 4 on the back of the smoke collecting plate 21 is provided with a temperature sensor for detecting the temperature of the smoke collecting plate 21. The temperature sensor monitors the surface temperature data of the smoke collecting plate 21 in real time and feeds back the temperature to the control module. A smoke sensor is provided on the bottom plate of the range hood housing 11 for detecting the amount of escaping oil smoke Y1, where the preset amount of oil smoke is Y0, and the preset temperature of the smoke collecting plate 21 is T0, and the preset temperature T0 is 50℃-60℃. When the smoke collecting plate 21 is closed, the temperature of the smoke collecting plate 21 is the first detection temperature T1; if the smoke sensor detects that the amount of oil smoke Y1 is greater than Y0 at the same time, it means that the exhaust channel between the smoke collecting plate 21 and the housing 11 cannot completely exhaust the oil smoke, and the amount of escaping oil smoke exceeds the standard. At this time, the smoke collecting plate is driven to open and the smoke is quickly exhausted; if the first detection temperature T1 is greater than the preset temperature T0, the system determines that the temperature of the smoke collecting plate 21 has exceeded the normal range. The control module will send a control signal to the drive component 5 to drive the smoke collecting plate 21 to open to the set angle, so that the smoke collecting plate 21 is away from the heat source and the exhaust is increased to reduce the temperature of the smoke collecting plate 21. Regardless of whether the amount of oil smoke Y1 or the first detection temperature T1 is too large, the smoke collecting plate 21 needs to be opened. Otherwise, it means that the exhaust channel between the smoke collecting plate 21 and the housing 11 can absorb and exhaust oil smoke and the temperature of the smoke collecting plate 21 meets the design value, and the smoke collecting plate 21 does not need to be opened.

[0091] Step 400: When the smoke collecting plate is opened, the temperature of the smoke collecting plate 21 is continuously measured and a second detection temperature is obtained. If the second detection temperature is greater than the preset temperature, the air volume of the fan 6 is increased to the maximum air volume until the second detection temperature drops to the preset temperature, and the fan 6 maintains the maximum air volume operation; if the second detection temperature is less than or equal to the preset temperature, the fan 6 maintains the current state.

[0092] When the smoke collecting plate 21 is opened, the temperature of the smoke collecting plate 21 is the second detection temperature T2. Regardless of whether the current fire power of the stove is large or the amount of oil smoke is large, the temperature of the smoke collecting plate 21 needs to be continued to be detected. If the second detection temperature T2 is less than or equal to the preset temperature T0, the fan 6 maintains the current air volume; when the second detection temperature T2 is still greater than the preset temperature T0, the air volume of the fan 6 continues to be increased to the maximum air volume until the current temperature value T4 is detected to be ≤ T0, and the range hood air volume maintains the maximum air volume.

[0093] Step 500: After increasing the air volume of the fan 6, the temperature of the smoke collecting plate 21 needs to be further tested until the second detected temperature drops to its preset temperature, so that the smoke collecting plate 21 and the switch component 4 thereon are always within the normal range, thereby improving the sensitivity, product life and user experience of the product.

[0094] In a preferred embodiment of the present invention, Figure 10 When the second detected temperature is less than or equal to the preset temperature, the method further includes:

[0095] The third detection temperature is obtained at a preset time interval; since the temperature of the smoke collecting plate 21 is already less than or equal to the preset temperature T0, it is only necessary to obtain the temperature of the smoke collecting plate 21 at a fixed interval. This can reduce the calculation of the controller and avoid the smoke collecting plate temperature detection occupying too many resources.

[0096] If the third detection temperature remains unchanged, the current air volume is maintained; if the third detection temperature remains unchanged, it means that the air volume of the fan 6 can effectively avoid the influence of heat radiation generated by cooking on the smoke collecting plate 21, so the current air volume can be maintained.

[0097] If the third detection temperature continues to decrease, and the current value of the third detection temperature drops by 20% compared with the previous detection value, the air volume of the fan 6 will be lowered by one level until the air volume of the fan 6 is reduced to the lowest level; if the third detection temperature continues to decrease, it means that the air volume of the fan 6 is large, and it is only necessary to adjust the air volume according to the temperature drop of the smoke collecting plate 21, which can effectively avoid wasting electricity and improve the thermal efficiency of the stove.

[0098] If the third detected temperature continues to rise after being lowered, and the increase between the current value of the third detected temperature and the previous detected value reaches 20%, the fan air volume is increased by one level until the fan air volume is adjusted to the highest level. Since the user may increase the heat power as needed during the cooking process, even if the temperature of the smoke trap 21 drops below the preset temperature T0, further testing is required to promptly discharge the heat radiation generated by cooking on the stove to avoid damage to the smoke trap 21 and the switch, thereby improving the product's sensitivity, product life, and user experience.

[0099] In the embodiments of the present invention, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art will understand the specific meanings of these terms in the embodiments of the present invention based on specific circumstances.

[0100] In the description of the embodiments of the present invention, it should be understood that the terms "upper" and "lower" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the embodiments of the present invention.

[0101] Throughout this specification, terms such as "one embodiment" and "a preferred embodiment" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0102] The above is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible in the present invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A range hood, characterized in that: include: A shell assembly (1) comprises an outer shell (11) and a smoke collecting hood (12), wherein the smoke collecting hood (12) and the outer shell (11) are jointly arranged to form a smoke collecting chamber, and the thickness of the top of the shell assembly (1) is greater than the thickness of the bottom thereof; A smoke collecting plate assembly (2) is rotatably connected to the front side of the shell assembly (1), and a plurality of opening slots (20) are provided on the inner side surface of the smoke collecting plate assembly (2), wherein when the smoke collecting plate assembly (2) is configured to be in a closed state, the inner side surface of the smoke collecting plate assembly (2) abuts against the outer surface of the shell assembly (1), and the opening slots (20) and the outer surface of the shell assembly (1) are surrounded to form a communicating exhaust channel, and the exhaust channel communicates with the smoke collecting chamber and the outside; The cigarette holding plate assembly (2) comprises a cigarette holding plate (21), a lining plate (22) and a back plate (23) connected in sequence from outside to inside, a first groove (231) recessed backward is provided in the middle of the back plate (23), and when the cigarette holding plate assembly (2) is configured in a closed state, the bottom of the first groove (231) can abut against the front end of the housing assembly (1), so that the cigarette holding plate assembly (2) is suspended on the front side of the housing assembly (1); The bottom of the first groove (231) is recessed toward the lining plate (22) to form a plurality of open grooves (20).

2. The range hood according to claim 1, characterized in that: A hinge assembly (3) is connected between the smoke collecting plate assembly (2) and the smoke collecting hood (12), and the hinge assembly (3) comprises: A first bracket (31) comprises a connecting portion (311) and a fixing portion (312), wherein the connecting portion (311) is connected between the top wall and the side wall of the smoke collecting hood (12), and the fixing portion (312) is fixed to the connecting portion (311); A rotating arm (32), one end of which is fixedly connected to the fixing portion (312); A second bracket (33) is fixed to the smoke collecting plate assembly (2); The rotating shaft assembly (34) is connected between the second bracket (33) and the rotating arm (32), so that the second bracket (33) and the other end of the rotating arm (32) are rotatably connected.

3. The range hood according to claim 2, characterized in that: The connecting portion (311) comprises a top plate (3111) connected to the smoke collecting hood (12), the front end of the top plate (3111) being bent downward to form a first flange (3112), and the first flange (3112) being connected to the front side wall of the smoke collecting hood (12).

4. The range hood according to claim 3, characterized in that: The fixing portion (312) includes: A vertical plate (3121) vertically connected between the top plate (3111) and the first flange (3112); A fixed arm (3122) has one end connected to the lower portion of the vertical plate (3121) on a side close to the first flange (3112), and the other end extending in the direction of the rotating arm (32).

5. The range hood according to claim 2, characterized in that: The second bracket (33) comprises: An L-shaped plate (331) is fixed to the front side of the lining plate (22), the lining plate (22) is provided with an L-shaped groove (221) corresponding to the L-shaped plate (331), and the L-shaped plate (331) is inserted into and connected to the L-shaped groove (221); a connecting arm (332) connected to a side of the vertical section of the L-shaped plate (331) close to the rotating arm (32) and passing through the lining plate (22), wherein the connecting arm (332) and the rotating arm (32) are rotatably connected; An L-shaped block (333) is connected to the horizontal section of the L-shaped plate (331), passes through the lining plate (22), and is fixed to the front side of the back plate (23).

6. The range hood according to claim 2, characterized in that: The smoke collecting plate assembly (2) further comprises a U-shaped frame (24), wherein the U-shaped frame (24) is located between the lining plate (22) and the back plate (23), and is sleeved on the outer periphery of the rotating arm (32).

7. The range hood according to claim 1, characterized in that: The lining plate (22) and the smoke collecting plate (21) are glued together, and the lining plate (22) is further provided with at least one boss (222) and / or an exhaust hole (223) for weight reduction and exhaust during the gluing process; The boss (222) is provided below the lining plate (22) and protrudes toward the first groove (231), and the boss (222) is screw-connected to the bottom of the first groove (231).

8. The range hood according to claim 1, characterized in that: Also includes: The switch assembly (4) is detachably connected to the lining plate (22); the lining plate (22) is further provided with a first mounting hole (224) corresponding to the switch assembly (4); the switch assembly (4) is inserted into the first mounting hole (224) and abuts against the back of the smoke collecting plate (21).

9. The range hood according to claim 8, characterized in that: The bottom of the first groove (231) is recessed forward in an area corresponding to the switch assembly (4) to form a second groove (232); a second mounting hole (233) corresponding to the switch assembly (4) is formed at the bottom of the second groove (232); the switch assembly (4) is inserted into the first groove (231) and the first mounting hole (224) through the second mounting hole (233); The bottom of the second groove (232) is connected to a mounting plate (234), and the mounting plate (234) is covered on a side of the second mounting hole (233) away from the switch assembly (4).

10. The range hood according to claim 8, characterized in that: The invention also includes a driving assembly (5) for driving the cigarette collecting plate assembly (2) to rotate, wherein the driving assembly (5) includes a motor (51) and a connecting rod assembly (52), wherein the housing of the motor (51) is fixed to the outer shell (11), and the connecting rod assembly (52) connects the motor end of the motor (51) and the back plate (23).

11. The range hood according to claim 1, characterized in that: Also includes: A smoke sensor connected to the bottom of the housing assembly (1); A temperature sensor is connected to the rear side of the cigarette collecting plate assembly (2) to detect the temperature of the cigarette collecting plate assembly (2).

12. A range hood control method, characterized in that: The control method is applied to the range hood according to any one of claims 2 to 11, and the control method includes: After the stove is ignited, the fan (6) is started and the current fire power is monitored in real time; If the current firepower is greater than a preset gear, the smoke collecting plate (21) is opened; if the current firepower is less than or equal to the preset gear, the smoke collecting plate (21) is closed; When the smoke collecting plate (21) is closed, the smoke escaping amount and the temperature of the smoke collecting plate (21) are detected and the smoke amount value and the first detection temperature value are obtained respectively; if the smoke amount value is greater than a preset smoke value or the first detection temperature is greater than its preset temperature, the smoke collecting plate (21) is opened; if the smoke amount value is less than or equal to the preset smoke value and the first detection temperature is less than or equal to its preset temperature, the current state is maintained; When the smoke collecting plate (21) is opened, the temperature of the smoke collecting plate (21) is continuously measured to obtain a second detection temperature. If the second detection temperature is greater than a preset temperature, the air volume of the fan (6) is increased to a maximum air volume until the second detection temperature drops to a preset temperature, and the fan (6) maintains operation at the maximum air volume. If the second detection temperature is less than or equal to the preset temperature, the fan (6) maintains the current state. After the air volume of the fan (6) is increased, the temperature of the smoke collecting plate (21) needs to be further detected until the second detected temperature drops to its preset temperature.

13. The control method according to claim 12, characterized in that: When the second detected temperature is less than or equal to the preset temperature, the following step is further included: Obtaining a third detected temperature at a preset time interval; If the third detected temperature remains unchanged, the current air volume is maintained; If the third detected temperature continues to decrease, and the current value of the third detected temperature decreases by 20% compared with the previous detected value, the air volume of the fan (6) is reduced by one gear until the air volume of the fan (6) is reduced to the lowest gear; If the third detected temperature continues to rise after being lowered, and the increase between the current value of the third detected temperature and the previous detected value reaches 20%, the air volume of the fan (6) is increased by one level until the air volume of the fan (6) is adjusted to the highest level.

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