Range hood and control method thereof

Abstract

The invention provides a range hood and a control method thereof, and belongs to the technical field of kitchen appliances, the range hood comprises a shell assembly and a smoke gathering plate assembly, the shell assembly comprises a shell and a smoke collecting hood, the smoke collecting hood and the shell jointly define a smoke collecting cavity, and the thickness of the top of the shell assembly is larger than that of the bottom of the shell assembly; the smoke gathering plate assembly is rotationally connected to the front side of the shell assembly, a plurality of opening grooves are formed in the inner side face of the smoke gathering plate assembly, when the smoke gathering plate assembly is configured to be in a closed state, the inner side face of the smoke gathering plate assembly abuts against the outer surface of the shell assembly, and a communicating exhaust channel is defined by the opening grooves and the outer surface of the shell assembly; the exhaust channel communicates with the smoke collecting cavity and the outside. The suction and exhaust efficiency and capacity can be effectively improved, a larger smoke gathering area is formed, the oil smoke suction and exhaust capacity is improved, and adhesion of a large amount of oil dirt is prevented.

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 and achieve the effect of improving smoke exhaust. However, the shell thickness of conventional ultra-thin wall embedded range hoods is mostly over 130mm. Before the oil fume is sucked into the air inlet channel, part of the oil fume is blocked by the shell, resulting in an unsmooth air intake streamline, which is easy to cause oil fume to escape and poor smoking effect. After long-term use, a large amount of oil stains are easily adhered to the back side of the smoke collection plate, causing oil stains to drip and pollute the stove. Therefore, there is a need for a range hood that increases the smoke collection area and improves the oil fume 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 shell 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 cavity, and the thickness of the top of the shell 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 an embodiment of the present invention, the cigarette holding plate assembly comprises a cigarette holding plate, a lining plate and a back plate connected in sequence from outside to inside, and a first groove recessed backward is provided in the middle of the back plate. When the cigarette holding plate assembly is configured to be in a closed state, the bottom of the first groove can abut against the front end of the shell assembly, so that the cigarette holding plate assembly is suspended on the front side of the shell 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 comprises 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 fixedly connected 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 a front side wall of the smoke hood.

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

[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 one side of the vertical plate 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 comprises:

[0020] An L-shaped plate fixedly connected 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 an embodiment of the present invention, the smoke collecting plate assembly further comprises a U-shaped frame, wherein 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 also provided with at least one boss and / or an exhaust hole for weight reduction and exhaust during the gluing process;

[0025] Wherein, the boss is arranged 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 also 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 side of the smoke collecting plate.

[0028] According to an 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 at 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] Wherein, a mounting plate is connected to the bottom of the second groove, 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 comprises a driving assembly for driving the smoke collecting plate assembly to rotate, the driving assembly comprises 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 above 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 detection temperature value 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 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;

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

[0041] Acquire 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 is tilted backward from top to bottom, so that the air inlet is further downward and closer to the smoke source, making the air intake streamline smoother, and effectively improving the suction and exhaust efficiency and capacity. The smoke collecting plate assembly can form a larger smoke collecting area, improve the oil smoke suction and exhaust capacity, and prevent a large amount of oil stains from adhering. The opening groove allows the smoke collecting plate assembly to exhaust smoke even when it is in the closed state as long as the fan is turned on, meeting the needs of scenarios where there is less oil smoke in Western cooking and users use multi-layer steamers and have special requirements for the 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 exemplary embodiments thereof with reference to the attached drawings.

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

[0049] Figure 2 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 It is a schematic diagram showing the connection of a hinge structure, a shell assembly and a smoke collecting plate assembly according to an exemplary embodiment.

[0052] Figure 5 FIG. 1 is a schematic diagram showing the connection between a smoke collecting plate assembly and a hinge assembly according to an exemplary embodiment.

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

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

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

[0056] Fig. 9 is a first exploded schematic diagram of a hinge assembly according to an exemplary embodiment.

[0057] Fig.10 is a first exploded schematic diagram of a hinge assembly according to an exemplary embodiment.

[0058] Fig.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 groove; 21. Smoke collecting plate; 22. Lining plate; 221. L-shaped groove; 222. Boss; 223. Exhaust hole; 224. First mounting hole; 225. First through hole; 226. Second through hole; 227. Protruding 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 part; 3111. Top plate; 3112. First flange; 312. Fixing part; 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. driving 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 implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

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

[0068] An 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 outer shell 11 are jointly arranged to form a smoke collecting chamber, the front wall of the outer 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 a plurality of open grooves 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 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 shell 11 is provided with an openable and closable smoke collecting plate assembly 2, and a smoke collecting hood 12 is provided at the rear side of the smoke collecting plate 21. The smoke collecting hood 12 divides the shell 11 into two independent upper and lower parts, so that the oil smoke is only concentrated in the smoke collecting cavity. 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, and the oil smoke generated in the left and right directions can be quickly sucked away. In this way, the oil smoke in the cooking process rises and directly enters the range hood air duct through the above-mentioned air inlet, achieving a smoke collecting 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, and 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 dimension of the upper part of the shell is T, and the thickness dimension of the lower part is D, T>2D, and 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 at the front side 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, and immediately forms a suspension 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, when the smoke collecting plate 21 is opened at the same angle, the smoke collecting area of ​​the present solution is increased by H*W. The width dimension of the smoke collecting plate 21 is set to W, which 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 with the conventional range hood, so that the probability of the back panel 23 contacting with oil smoke is reduced, the amount of oil stains adhering is less, and the risk of oil stains dripping is reduced. In addition, by setting an opening groove 20 on the rear side of the smoke collecting plate assembly 2, preferably there are three opening grooves 20, which are respectively located 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 opening groove 20 and the outer shell 11 as long as the fan 6 is turned on, 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 cigarette collecting plate assembly 2 shown includes a cigarette collecting plate 21, a lining plate 22 and a back plate 23 connected in sequence from the outside to the inside, and a first groove 231 is provided in the middle of the back plate 23, which is recessed backwards. When the cigarette collecting plate assembly 2 is configured to be in a closed state, the bottom of the first groove 231 can abut against the front end of the shell assembly 1, so that the cigarette collecting plate assembly 2 is suspended on the front side of the shell assembly 1; wherein, the bottom of the first groove 231 is recessed in the direction of the lining plate 22 to form a plurality of open grooves 20. Since the thickness of the conventional cigarette collecting plate assembly 2 is only the thickness of the glass panel, in order to set the cigarette collecting plate assembly 2 to a certain thickness, the present application achieves a thickening effect through the lining plate 22 and the back plate 23. First, a first groove 231 recessed backwards is provided in the middle of the back plate 23, and the rear side of the bottom of the first groove 231 can abut against the front side of the shell 11 when the cigarette collecting plate assembly 2 is configured to be in a closed state, so that the cigarette collecting plate assembly 2 is suspended above the front side of the shell 11 and has a certain distance H. In addition, by providing a plurality of open grooves 20 on the back plate 23, the open end of each open groove 20 abuts against the surface of the housing 11 and forms an exhaust channel therewith. Specifically, the bottom of the first groove 231 is recessed forward to form an open groove 20 with an opening toward 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 open grooves 20 (such as the left side, right side and bottom of the smoke collecting plate assembly 2) on the left side, right side and bottom of the smoke collecting plate assembly 2. 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 The hinge assembly 3 is connected between the smoke collecting plate assembly 2 and the smoke collecting hood 12, and 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, so that the second bracket 33 and the other end of the rotating arm 32 are rotatably connected. The rotating shaft assembly 34 includes rivets, plastic sleeves, and plastic gaskets. The rotating shaft assembly 34 between the second bracket 33 and the rotating arm 32 is riveted and fixed together through a riveting process. Through the cooperation of the first bracket 31, the rotating arm 32, the second bracket 33 and the shaft assembly / 34, not only can the rotation of the cigarette collecting plate assembly 2 be realized, but also the double-sided fixation between the first bracket 31 and the outer shell 11 is improved compared with the single-sided fixing method. The cigarette collecting plate 21 can also be prevented from being deformed by external force when rotating around the 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 collecting 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 collecting hood 12. The top plate 3111 and the first flange 3112 of the present application are respectively fixed to the top wall and the side wall of the smoke collecting hood housing 11, so as to improve the connection stability between the first bracket 31 and the smoke collecting hood housing 11, ensure the smooth opening and closing of the smoke collecting plate 21, and improve the user experience.

[0074] In a preferred embodiment of the present invention, Figure 4-10 The fixing part 312 shown includes a vertical plate 3121 and a fixing arm 3122. The vertical plate 3121 is vertically connected between the top plate 3111 and the first flange 3112. One end of the fixing arm 3122 is connected to the lower part of the vertical plate 3121 near the first flange 3112, and the other end of the fixing arm 3122 extends in the direction of the rotating arm 32. The force of the smoke collecting plate 21 during the opening and closing process will be transmitted to the vertical plate 3121 through the fixing wall 3122. The present application can form a stable triangular structure by connecting the top plate 3111, the first flange 3112 and the vertical plate 3121 to each other and then to the smoke machine housing 11, thereby 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 inside of the housing 11 to form a second flange 31211, and the bottom of the vertical plate 3121 is bent toward the inside 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, thereby preventing the cigarette collecting plate 21 from deforming after multiple openings and closings.

[0076] Preferably, the vertical plate 3121 is provided with a reinforcing rib 31213. The present application uses sheet metal profiling to provide a reinforcing rib 31213 in the middle of the vertical plate 3121 to increase the structural strength of the vertical plate 3121. The reinforcing rib 1213 can be provided on one of the inner and outer sides of the vertical plate 3121, or on both the inner and outer sides, as long as the mechanical strength of the vertical plate 3121 can be enhanced, and the present application does not limit this.

[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 fixedly connected 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, close to the side of 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, passes through the lining plate 22, and is fixedly connected 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 the cigarette collecting plate 21, the lining plate 22 and the back plate 23 are combined together, which effectively improves the connection strength between the cigarette collecting plate assembly 2 and the second bracket 33, and improves 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 also provided with a second through hole 226 corresponding to the mounting block 333, wherein 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 groove 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 22, so that the second bracket 33 and the cigarette collecting plate assembly 2 can be connected together. Next, the rotating arm 32 of the hinge assembly is fastened to the fixed arm 3122 on the first bracket 31 by screws, and the installation of the cigarette collecting plate assembly 2 and the housing 11 is completed. The smoothness of the opening and closing of the cigarette collecting plate 21 is ensured. Preferably, the L-shaped plate 331 and the L-shaped groove 221 are clearance-matched, which facilitates 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 smoke collecting plate assembly 2 shown also includes a U-shaped frame 24, which is located between the lining plate 22 and the back plate 23 and is sleeved on 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 on 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, and the liner 22 is also provided with at least one boss 222 and / or an exhaust hole 223 for weight reduction and exhaust during the gluing process; wherein the boss 222 is arranged below the liner 22 and protrudes toward the first groove 231, and the boss 222 is screwed to the bottom of the groove of the first groove 231. The liner 22 of the present application is fixed to the smoke collecting plate 21 by glue, and the exhaust hole 223 can not only reduce the weight of the smoke collecting plate assembly 2, but also exhaust the glue. The boss 222 not only enhances the structural strength of the liner 22, but also can be fastened to the back plate 23 by screws, thereby increasing the contact area and fixing effect between the liner 22 and the back plate 23. On the boss 222 of the liner 22, in addition, the four corners of the back plate 23 are also contacted and limited with the smoke collecting plate 21 by glue pads, so the liner 22 must include at least one of the boss 222 and the exhaust 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 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 into the side of the convex rib 227 close to the smoke collecting plate 21, 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 range hood shown also includes a switch assembly 4, which is detachably connected to the lining plate 22. The lining plate 22 is also 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. The display screen of the switch assembly 4 abuts against the smoke collecting plate 21. Since the smoke control plate 21 is generally made of glass, some functions of the switch assembly 4 can be displayed and the operation is convenient, thereby improving the technological sense of the smoke collecting plate 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, and the bottom of the second groove 232 is provided with a second mounting hole 233 corresponding to the switch assembly 4, and the switch assembly 4 is inserted into the first groove 231 and the first mounting hole 224 through the second mounting hole 233; wherein, the bottom of the second groove 232 is connected with a mounting plate 234, and the mounting plate 234 is covered on 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, and finally the mounting plate 234 is inserted into the bottom of the second groove 232, and the second groove 232 can limit and fix the mounting plate 234, and can also make the mounting plate 234 close to the switch assembly 4, so as to facilitate its connection with the switch assembly 4 and facilitate the maintenance of the switch assembly 4 in the later stage.

[0084] In a preferred embodiment of the present invention, Figure 1-4 The range hood shown also includes a driving assembly 5 for driving the smoke collecting plate assembly 2 to rotate, and the driving assembly 5 includes a motor 51 and a connecting rod assembly 52. ​​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. The driving assembly 5 of the present application is arranged in the middle position of the whole machine housing 11, and the housing 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 driving assembly 5 is fixed to the whole machine housing 11 and the smoke collecting plate assembly 2. Since the driving assembly 5 is located in the middle position, the left and right sides of the smoke collecting plate assembly 2 are evenly stressed during the 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 it 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 to monitor the amount of oil smoke. When the amount of oil smoke exceeds the normal range, it can be linked with 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, the temperature sensor is connected to the rear 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 started and the smoke collecting plate assembly 2 is in the closed state, 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 quickly. When it rises to a certain degree, it is easy to cause the glass to be scalded and broken, and the operation fails due to damage to the high temperature of the switch. Therefore, it is also 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, so as to achieve the effect of cooling the surface of the smoke collecting plate assembly 2 and preventing the glass from breaking 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 Fig.11 The control methods shown include:

[0087] Step s100: After the stove is ignited, the fan 6 is started, and the current firepower is monitored in real time. The range hood control module is interconnected with the stove through Bluetooth, WiFi, etc. When the range hood control module detects that the stove is ignited, the range hood control module drives the fan 6 to start, and monitors the current firepower A of the stove in real time, and compares the current firepower A with the preset gear A0. Possible cooking methods and the amount of oil smoke can be predicted according to different firepowers.

[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 the present application is preferably medium or high heat. Generally, food is processed by stir-frying, frying, or deep-frying at medium or high heat. This process will generate a large amount of oil smoke. 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, at this time, the smoke collecting plate 21 needs to be opened for exhaust; if the current firepower A is low or micro fire, it can be suitable for scenes with less oil smoke in Western cooking and users using multi-layer steamers and other scenes with special requirements for the cooking space under the range hood. In the present application, it is only necessary to turn on the fan 6, and the smoke inlet channel between the smoke collecting plate 21 and the shell 11 can be used to absorb the gas in cooking; of course, a switch button for only turning on the fan without turning on the smoke collecting plate 21 can also be set on the operator of the range hood, 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, 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 quickly. When it rises to a certain degree, it is easy to cause the glass to be scalded and broken, and the switch to be damaged by high temperature and fail to operate. 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 surface temperature data of the smoke collecting plate 21 is monitored in real time through the temperature sensor, and the temperature is fed back to the control module; a smoke sensor is provided on the bottom plate of the range hood housing 11 for detecting the escaped oil smoke amount Y1, wherein the preset oil smoke amount 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 smoke cannot be completely exhausted through the smoke exhaust channel between the smoke collecting plate 21 and the shell 11, 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 exhausted quickly; 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, and the control module will send a control signal to the drive component 5 to drive the smoke collecting plate 21 to open to a set angle, so that the smoke collecting plate 21 is away from the heat source, and the smoke exhaust is increased to reduce the temperature of the smoke collecting plate 21. 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 shell 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 collection plate 21 is opened, the temperature of the smoke collection plate 21 is the second detection temperature T2. Regardless of whether the current firepower of the stove is large or the amount of oil smoke is large, it is necessary to continue to detect the temperature of the smoke collection plate 21. 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≤T0 is detected, 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 detected until the second detected temperature drops to its preset temperature, so that the smoke collecting plate 21 and the switch assembly 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, Fig.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 detected temperature remains unchanged, the current air volume is maintained; if the third detected temperature remains unchanged, it means that the air volume of the fan 6 at this time can effectively avoid the influence of the heat radiation generated by the cooking stove on the smoke collecting plate 21, so the current air volume can be maintained.

[0097] If the third detected temperature continues to decrease, and the current value of the third detected temperature drops by 20% compared with the previous detected value, the air volume of the fan 6 is lowered by one level until the air volume of the fan 6 is reduced to the lowest level; if the third detected 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 air volume of the fan is increased by one level until the air volume of the fan is adjusted to the highest level. During the cooking process, the user may increase the firepower as needed, so even when the temperature of the smoke collecting plate 21 drops below the preset temperature T0, further detection is required to discharge the heat radiation generated by the cooking stove in time to avoid damage to the smoke collecting plate 21 and the switch, thereby improving the sensitivity, product life and user experience of the product.

[0099] In the embodiments of the present invention, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The terms "installation", "connection", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0100] In the description of the embodiments of the present invention, it needs to be understood that the directions or positional relationships indicated by the terms "upper" and "lower" are 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 orientation. Therefore, it cannot be understood as a limitation on the embodiments of the present invention.

[0101] In the description of this specification, the description of the terms "one embodiment", "a preferred embodiment", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0102] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope 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 grooves (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 grooves (20) and the outer surface of the shell assembly (1) are surrounded to form a connecting exhaust channel, and the exhaust channel connects the smoke collecting chamber and the outside.

2. The range hood according to claim 1, characterized in that: The cigarette holding plate assembly (2) comprises a cigarette holding plate (21), a lining plate (22) and a back plate (23) which are connected in sequence from outside to inside, and a first groove (231) which is recessed backward is provided in the middle of the back plate (23). 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 shell assembly (1), so that the cigarette holding plate assembly (2) is suspended on the front side of the shell assembly (1); The bottom of the first groove (231) is recessed toward the lining plate (22) to form a plurality of open grooves (20).

3. The range hood according to claim 2, 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 a top wall and a side wall of the smoke collecting hood (12), and the fixing portion (312) is fixedly connected 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 fixedly connected 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.

4. The range hood according to claim 3, 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).

5. The range hood according to claim 4, characterized in that: The fixing portion (312) comprises: 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 one side of the vertical plate (3121) close to the first flange (3112), and the other end extending in the direction of the rotating arm (32).

6. The range hood according to claim 3, characterized in that: The second bracket (33) comprises: An L-shaped plate (331) is fixedly connected 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); 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; The 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).

7. The range hood according to claim 3, 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).

8. The range hood according to claim 2, characterized in that: The lining plate (22) and the smoke collecting plate (21) are glued together, and the lining plate (22) is also 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 arranged 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).

9. The range hood according to claim 2, characterized in that: Also includes: The switch assembly (4) is detachably connected to the lining plate (22); the lining plate (22) is also 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 side of the smoke collecting plate (21).

10. The range hood according to claim 9, 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); the bottom of the second groove (232) is provided with a second mounting hole (233) corresponding to the switch assembly (4); 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 arranged to cover a side of the second mounting hole (233) away from the switch assembly (4).

11. The range hood according to claim 9, characterized in that: It also includes a driving assembly (5) for driving the cigarette collecting plate assembly (2) to rotate, the driving assembly (5) including 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).

12. 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).

13. A control method for a range hood, characterized in that: The control method is applied to the range hood according to any one of claims 2 to 12, and the control method comprises: 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 escape amount and the temperature of the smoke collecting plate (21) are detected to obtain a smoke amount value and a first detection temperature value 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 detected temperature; if the second detected temperature is greater than a preset temperature, the air volume of the fan (6) is increased to a maximum air volume until the second detected temperature drops to a preset temperature, and the fan (6) maintains operation at the maximum air volume; if the second detected 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.

14. The control method according to claim 13, characterized in that: When the second detected temperature is less than or equal to the preset temperature, the following further comprises: Acquiring 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 decrease between the current value of the third detected temperature and the previous detected value reaches 20%, the air volume of the fan (6) is reduced by one level until the air volume of the fan (6) is reduced to the lowest level; 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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