Range hood

Abstract

The utility model belongs to the technical field of kitchen electric appliances, and discloses a range hood. The range hood comprises an exhaust fume collecting hood assembly, a fan assembly and a first negative pressure plate, a fume inlet is formed in the front side face of the exhaust fume collecting hood assembly, the fan assembly is arranged in the exhaust fume collecting hood assembly, and an air inlet of the fan assembly is communicated with the fume inlet; the first negative pressure plate is connected with the exhaust fume collecting hood assembly and located on the front side of the exhaust fume inlet, a side flow channel is defined between the first negative pressure plate and the exhaust fume collecting hood assembly, and an air inlet gap is formed in at least one side of the circumferential direction of the side flow channel. The smoke inlet is always communicated with the outer side of the range hood through the side flow channel, and the first negative pressure plate does not need to turn over to open the smoke inlet, so that the problem of pot collision in a steamer scene is solved.

Description

Technical Field

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

[0002] The range hood is a smoke extraction device located above the stove. It can quickly remove the smoke and discharge it outdoors. It is an indispensable part of our family. Figure 1 As shown, the traditional range hood includes a main box 2000 and a fume hood assembly 100 arranged below the main box 2000. A fan is arranged inside the main box 2000. This type of range hood is large in size and occupies space in the kitchen cabinet. In order to reduce the size of the range hood, ultra-thin range hoods with bottom-mounted fans have emerged in the industry, such as Figure 2 As shown, the main box 2000 is omitted in the ultra-thin range hood, and the fan is located in the smoke collection chamber of the smoke hood assembly 100 below. The smoke inlet is opened or closed by a rotatable flap 3000. Because of its small size and ability to free up upper cabinet space, it is popular in the market.

[0003] Currently, if Figure 3 and Figure 4 As shown, most of the bottom-mounted fan range hoods have a single smoke inlet for smoking. In the wok 5000 scenario, the flap 3000 can rotate normally. In the steamer 6000 scenario, there is a problem that the flap 3000 opens and hits the pot, and it cannot work effectively. Utility Model Content

[0004] The purpose of the utility model is to provide a range hood that can solve the problem of pot collision in a steamer scenario.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A range hood, comprising:

[0007] A smoke collecting hood assembly, wherein a smoke inlet is provided on the front side of the smoke collecting hood assembly;

[0008] A fan assembly is disposed in the smoke collecting hood assembly, and an air inlet of the fan assembly is connected to the smoke inlet;

[0009] A first negative pressure plate is connected to the smoke hood assembly and is located in front of the smoke inlet. The first negative pressure plate and the front side surface of the smoke hood assembly are spaced apart and form a side flow channel, and an air inlet gap is formed on at least one side of the circumference of the side flow channel.

[0010] As an optional solution of the above range hood, the first negative pressure plate includes:

[0011] a main board body, the main board body being parallel to and spaced apart from the front side surface of the smoke collecting hood assembly;

[0012] A guide plate, the top of which is connected to the bottom of the main body, the guide plate is tilted toward the smoke hood assembly, and the bottom of which is in contact with or spaced from the front side of the smoke hood assembly.

[0013] As an optional solution for the above range hood, the bottom end of the fume hood assembly is connected to an oil cup, and the orthographic projection of the bottom end of the guide plate and the orthographic projection of the front side of the fume hood assembly are both located in the oil cup.

[0014] As an optional solution for the above-mentioned range hood, the size of the first negative pressure plate in the left and right directions is less than or equal to the size of the smoke hood assembly in the left and right directions, and the projection of the first negative pressure plate in the front and rear directions is located on the front side of the smoke hood assembly.

[0015] As an optional solution of the above-mentioned range hood, the first negative pressure plate and the fume hood assembly are detachably connected.

[0016] As an optional solution for the above-mentioned range hood, a first rotating part is provided at one end of the first negative pressure plate, and a first plug-in part is provided at the other end. The smoke hood assembly is provided with a second rotating part and a second plug-in part. The first rotating part and the second rotating part are detachable and rotatable, and the first plug-in part and the second plug-in part are plug-fitted.

[0017] As an optional solution of the above range hood, the range hood further includes:

[0018] a shielding portion connected to the top of the smoke collecting hood assembly and extending from the smoke collecting hood assembly toward the front side;

[0019] The second negative pressure plate is suspended below the shielding portion. The space between the shielding portion and the second negative pressure plate forms an upper flow channel, and the upper flow channel is communicated with the smoke inlet.

[0020] As an optional solution of the above-mentioned range hood, the number of the smoke inlet is set to one, the upper end of the smoke inlet extends above the second negative pressure plate, and part of the smoke inlet is arranged opposite to the first negative pressure plate.

[0021] As an optional solution of the above range hood, the rear end of the second negative pressure plate extends to the rear side of the top end of the first negative pressure plate;

[0022] And / or, the second negative pressure plate is arranged to be tilted downward from front to back;

[0023] And / or, the second negative pressure plate is detachably connected to the shielding portion;

[0024] And / or, an air inlet gap is provided at the top of the first negative pressure plate.

[0025] As an optional solution of the above range hood, the shielding portion includes:

[0026] an upper plate extending horizontally and connected to the smoke collecting hood assembly, wherein the second negative pressure plate is suspended below the upper plate;

[0027] The front plate is connected to the front end of the upper plate, the front plate extends downward from the upper plate, and the front end of the second negative pressure plate is spaced apart from the front plate.

[0028] Beneficial effects of the utility model:

[0029] In the range hood provided by the utility model, the first negative pressure plate is arranged at intervals on the front side of the smoke collection hood assembly, and forms a side flow channel with the smoke collection hood assembly. The smoke inlet is always connected with the outside of the range hood through the side flow channel. The first negative pressure plate does not need to be flipped over to open the smoke inlet, which solves the problem of the steamer touching the pot in the steamer scenario.

[0030] There are openings on the left and right sides and the top side of the side flow channel to let in smoke, forming an oil smoke suction effect with three sides surrounding it, and the oil smoke removal effect is good.

[0031] The shielding part and the second negative pressure plate form an upper flow channel, forming a smoking effect with three sides of the top surrounded by suction, realizing multi-dimensional smoking, preventing oil smoke from escaping, and improving the oil smoke suction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the structure of a traditional range hood;

[0033] Figure 2 It is a structural diagram of an existing ultra-thin range hood;

[0034] Figure 3 This is a structural diagram of an existing ultra-thin range hood in combination with a frying pan;

[0035] Figure 4 This is a structural diagram of an existing ultra-thin range hood and a steamer;

[0036] Figure 5 This is a first schematic diagram of the range hood provided by the present utility model;

[0037] Figure 6 This is a cross-sectional view of the range hood provided by the utility model;

[0038] Figure 7 This is a front view of the range hood provided by the utility model;

[0039] Figure 8 This is a second schematic diagram of the range hood provided by the present invention;

[0040] Figure 9This is a side view of the range hood provided by the utility model;

[0041] Figure 10 This is a partial structural diagram of the range hood provided by the utility model;

[0042] Figure 11 This is a cross-sectional view of the first negative pressure plate and the second negative pressure plate of the range hood provided by the present invention when they are not assembled.

[0043] In the picture:

[0044] 100. Smoke hood assembly; 110. Smoke inlet; 120. Second rotating part; 130. Second plug-in part; 200. First negative pressure plate; 210. Main body; 211. First rotating part; 212. First plug-in part; 213. Air inlet gap; 220. Air guide plate; 300. Fan assembly; 400. Oil cup; 500. Shielding part; 510. Upper plate; 511. Fourth plug-in part; 5111. Plug-in slot; 512. Fourth rotating part; 5121. Limiting plate; 5122. Hanging rod; 520. Front plate; 600. Second negative pressure plate; 610. Third plug-in part; 620. Third rotating part; 2000. Main box; 3000. Flip plate; 4000. Cooker; 5000. Wok; 6000. Steamer. DETAILED DESCRIPTION

[0045] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0046] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0047] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0048] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0049] like Figure 5 and Figure 6 As shown, this embodiment provides a range hood comprising a fume hood assembly 100 and a fan assembly 300. A fume collection chamber is formed within the fume hood assembly 100, and the fume hood assembly 100 is provided with a fume inlet 110 communicating with the fume collection chamber. The fan assembly 300 is disposed within the fume hood assembly 100, with the air inlet of the fan assembly 300 communicating with the fume inlet 110, thereby creating a negative pressure at the fume inlet 110 to draw fume outside the fume hood assembly 100 into the fume collection chamber. The location of the fan assembly 300 within the fume hood assembly 100 helps reduce the size of the range hood and free up space in the cabinet above.

[0050] The range hood also includes a first negative pressure plate 200, which is connected to the smoke hood assembly 100 and is located in front of the smoke inlet 110. The first negative pressure plate 200 and the smoke hood assembly 100 are spaced apart and form a side flow channel. An air inlet gap is formed on at least one side of the circumference of the side flow channel, and the air inlet gap is connected to the smoke inlet 110. In other words, the first negative pressure plate 200 is spaced apart in front of the smoke hood assembly 100, and the space between the two forms a side flow channel. It can be understood that, on the basis that the dimensions of the front side surfaces of the first negative pressure plate 200 and the smoke hood assembly 100 remain unchanged, the flow area of the side flow channel is determined by the distance between the first negative pressure plate 200 and the front side surface of the smoke hood assembly 100. The greater the distance between the first negative pressure plate 200 and the front side surface of the smoke hood assembly 100, the larger the side flow channel.

[0051] The smoke inlet 110 always maintains a flow state with the outside of the range hood through the side flow channel. After the fan assembly 300 is started, negative pressure is generated at the smoke outlet, which attracts the smoke outside the smoke hood assembly 100 into the side flow channel through the air inlet gap, and then enters the smoke hood assembly 100 through the smoke inlet 110, thereby realizing the function of sucking out the smoke. The first negative pressure plate 200 does not need to be flipped open to avoid interference between the first negative pressure plate 200 and the cookware.

[0052] The side flow channel surrounded by the first negative pressure plate 200 is located outside the smoke hood assembly 100, which is beneficial to reducing the size of the smoke hood assembly 100, making the entire range hood visually smaller, and helping to reduce processing costs.

[0053] In addition, the first negative pressure plate 200 can shield the smoke inlet 110 so that the smoke inlet 110 is not visible on the front side of the range hood, thereby realizing a hidden design of the smoke inlet 110 and improving the appearance of the range hood.

[0054] In some embodiments, at least the left and right sides of the first negative pressure plate 200 form an air inlet gap with the front side of the smoke hood assembly 100, so that when the range hood is working, a smoke-absorbing effect is formed on the left and right sides; the air inlet gap extends in the vertical direction, which can prevent the smoke from escaping upward and ensure the smoke absorption effect.

[0055] In some embodiments, as Figure 5 and Figure 6 As shown, the smoke hood assembly 100 is roughly a rectangular parallelepiped with a regular shape; the front side of the smoke hood assembly 100 is vertically arranged to avoid the pots on the stove 4000, and the cooking space reserved for the pots is larger, which is convenient for users to cook.

[0056] In order to reduce the size of the smoke hood assembly 100 along the front-to-back direction, in some embodiments, the axis of the fan assembly 300 extends along the front-to-back direction, the front axial end face of the fan assembly 300 is the air inlet face, and an air inlet is formed to facilitate facing and connecting with the smoke inlet 110; the outer peripheral surface of the fan assembly 300 is the air outlet face, so that the size of the smoke hood assembly 100 along the front-to-back direction can be adapted to the axial size of the fan assembly 300, so as to reduce the thickness of the smoke hood assembly 100 along the front-to-back direction and realize the ultra-thin design of the range hood.

[0057] It should be noted here that the thickness of the smoke hood assembly 100 (i.e., the dimension along the front-to-back direction) is adapted to the axial dimension of the fan assembly 300, which means that a smoke collecting chamber is formed in the smoke hood assembly 100, and the dimension of the smoke collecting chamber along the front-to-back direction can be equal to or slightly larger than the axial dimension of the fan assembly 300, as long as it can accommodate the fan assembly 300. This is beneficial to reducing the thickness of the smoke hood assembly 100 and is conducive to the development of range hoods towards ultra-thin models.

[0058] In order to visually reduce the thickness of the range hood, in some embodiments, as Figure 7 As shown, the dimension L of the first negative pressure plate 200 along the left-right direction is less than or equal to the dimension H of the smoke hood assembly 100 along the left-right direction, and the projections of the first negative pressure plate 200 along the front-to-back direction are both located on the front side of the smoke hood assembly 100, so that the size of the range hood along the front-to-back direction is visually smaller, thereby improving product competitiveness.

[0059] In some embodiments, the central axis of the first negative pressure plate 200 extending in the vertical direction can coincide with the central axis of the front side of the fume hood assembly 100 extending in the vertical direction, so that the range hood is a symmetrical structure when viewed from the front, making the range hood more beautiful.

[0060] In some embodiments, the distance between the first negative pressure plate 200 and the front side of the smoke hood assembly 100 may be 0.1-0.5 times the thickness of the smoke hood assembly 100 , so as to reduce the overall thickness of the range hood while ensuring the smoke extraction effect.

[0061] Illustratively, the distance between the first negative pressure plate 200 and the front side of the fume hood assembly 100 may be 0.1 times, 0.15 times, 0.2 times, 0.25 times, 0.3 times, 0.35 times, 0.4 times, 0.45 times or 0.5 times the thickness of the fume hood assembly 100 .

[0062] In order to filter the oil smoke, the range hood further includes a filter screen, which is connected to the smoke collecting hood assembly 100 and is arranged at the smoke inlet 110. When the range hood is working, the oil smoke passes through the filter screen to filter the oil stains and then enters the interior of the smoke collecting hood assembly 100.

[0063] As the range hood is used, grease accumulates on its surface. This grease collects and flows downward under gravity, posing a risk of dripping onto the stove 4000 or pots. To address this issue, a detachable oil cup 400 is attached to the bottom of the fume hood assembly 100. This cup is used to collect the grease. This allows grease attached to the filter to flow along the surface of the fume hood assembly 100 and into the cup, collecting the grease.

[0064] To facilitate the collection of oil stains adhering to the front side of the fume hood assembly 100, the front surface of the oil cup 400 is located in front of the front side of the fume hood assembly 100. In other words, the orthographic projection of the front side of the fume hood assembly 100 is located within the oil cup 400, ensuring that oil stains flowing along the front side of the fume hood assembly 100 can drip into the oil cup 400.

[0065] In some embodiments, the oil cup 400 can be fixed to the smoke hood assembly 100 by fasteners such as screws, or the oil cup 400 can be hung on the lower end of the smoke hood assembly 100 by a hook to facilitate the disassembly and assembly of the oil cup 400, thereby making it convenient for users to clean the oil cup 400 regularly.

[0066] Since the first negative pressure plate 200 is located at the front side of the smoke hood assembly 100, in order to prevent the oil stains attached to the first negative pressure plate 200 from dripping onto the stove 4000 or the pot, the first negative pressure plate 200 includes a main body 210 and a guide plate 220. The main body 210 is parallel to the front side of the smoke hood assembly 100 and is spaced apart. The left and right sides of the main body 210 and the smoke hood assembly 100 form an air inlet gap. The top of the guide plate 220 is connected to the bottom of the main body 210. The guide plate 220 is tilted from top to bottom toward the smoke hood assembly 100. The bottom of the guide plate 220 abuts or is spaced apart from the front side of the smoke hood assembly 100. By providing the guide plate 220, the oil stains attached to the main body 210 can be guided to flow toward the front side of the smoke hood assembly 100 under the action of gravity, so that the bottom end of the guide plate 220 is closer to the oil cup 400, which is conducive to guiding the oil stains into the oil cup 400.

[0067] In some embodiments, the orthographic projection of the bottom end of the guide plate 220 is located in the oil cup 400 to ensure that the oil flowing along the surface of the guide plate 220 can eventually fall into the oil cup 400 .

[0068] like Figure 9 As shown, during the operation of the range hood, the oil smoke will flow along the first negative pressure plate 200 and the second negative pressure plate 600, thereby adhering to oil stains on the first negative pressure plate 200 and the second negative pressure plate 600. The oil stains on the outer wall of the first negative pressure plate 200 can enter the oil cup 400 under the guiding action of the guide plate 220; the oil stains on the inner wall of the first negative pressure plate 200 pass through the bottom end of the front side of the smoke hood assembly 100 through the flow channel of the guide plate 220, and then flow along the front side of the smoke hood assembly 100, and finally enter the oil cup 400.

[0069] Since the first negative pressure plate 200 is fixed to the front side of the smoke hood assembly 100, it is far away from the stove 4000 in the front-to-back direction, so there is a problem that some oil smoke escapes from the front side. Figure 5-Figure 8As shown, the range hood further includes a shielding portion 500 and a second negative pressure plate 600. The shielding portion 500 is connected to the top of the smoke hood assembly 100 and extends forward from the smoke hood assembly 100. The second negative pressure plate 600 is suspended below the shielding portion 500. The space between the shielding portion 500 and the second negative pressure plate 600 forms an upper flow channel, which is connected to the smoke inlet 110. In other words, the upper flow channel is a space surrounded by the bottom surface of the shielding portion 500 and the top surface of the second negative pressure plate 600. It can be understood that, on the basis of the unchanged dimensions of the second negative pressure plate 600 and the shielding portion 500, the flow area of the upper flow channel is determined by the distance between the second negative pressure plate 600 and the shielding portion 500. The larger the distance between the shielding portion 500 and the second negative pressure plate 600, the larger the dimension of the upper flow channel.

[0070] The shielding portion 500 and the second negative pressure plate 600 form an upper flow channel, which not only increases the oil smoke suction channel and facilitates multi-dimensional suction, but also intercepts the escaping oil smoke above the stove 4000, greatly improving the suction capacity of the range hood.

[0071] In some embodiments, the left and right sides and the front side of the upper flow channel are all open structures, which can achieve three-sided suction on the top surface, provide a wider coverage area for the stove 4000, and achieve a better oil fume suction effect.

[0072] To allow both the upper flow channel and the side flow channel to communicate with the smoke inlet 110, only one smoke inlet 110 is provided on the front side of the smoke hood assembly 100. The smoke inlet 110 can be provided near the upper end of the smoke hood assembly 100, so that the upper end of the smoke inlet 110 extends above the second negative pressure plate 600. That is, the top of the smoke inlet 110 is higher than the height of the second negative pressure plate 600, and part of the smoke inlet 110 is arranged opposite the first negative pressure plate 200. This arrangement allows the smoke inlet 110 to respectively face part of the upper flow channel and the side flow channel, thereby facilitating communication between the upper flow channel and the side flow channel and the smoke inlet 110.

[0073] In some embodiments, the shielding portion 500 includes an upper plate 510 and a front plate 520. The upper plate 510 extends horizontally and is connected to the front top of the fume hood assembly 100. The second negative pressure plate 600 is suspended below the upper plate 510. The front plate 520 is connected to the front end of the upper plate 510 and extends downward from the upper plate 510. The upper plate 510 and the front plate 520 are generally in an inverted L-shape, which can gather and guide the oil smoke at the top. The upward-flowing oil smoke is blocked by the front plate 520 and flows along the bottom surface of the upper plate 510 to the rear side, thereby entering the upper flow channel and preventing the oil smoke from escaping.

[0074] Optionally, the top end of the second negative pressure plate 600 is spaced apart from the front plate 520 to form a front opening of the upper flow channel.

[0075] In some embodiments, the shielding portion 500 and the smoke hood assembly 100 may be integrally formed to reduce the number of parts and simplify assembly.

[0076] In some embodiments, reference Figure 5 and Figure 8 As shown, an air inlet notch 213 is provided at the top of the first negative pressure plate 200. The air inlet notch 213 can form an air outlet with the second negative pressure plate 600, through which oil smoke can be sucked into the side flow channel, thereby improving the oil smoke suction effect.

[0077] refer to Figure 6 and Figure 8 As shown, the side flow channel surrounded by the first negative pressure plate 200 and the smoke hood assembly 100 absorbs oil smoke through the openings on the left and right sides and the air inlet gap 213, forming a three-sided oil smoke extraction effect; the upper flow channel surrounded by the second negative pressure plate 600 and the shielding part 500 absorbs oil smoke through the front side and the left and right sides, forming a three-sided oil smoke extraction effect. Through the cooperation of the upper flow channel and the side flow channel, the flow path of the oil smoke is better covered, thereby improving the oil smoke extraction capacity.

[0078] To facilitate the flow of oil contamination from the second negative pressure plate 600 into the oil cup 400, in some embodiments, the second negative pressure plate 600 is tilted downward from front to back. This arrangement allows the oil contamination on the second negative pressure plate 600 to flow along the top or bottom surface of the second negative pressure plate 600 to the rear end of the second negative pressure plate 600 under the action of gravity, where it drips down under the action of gravity. This allows the oil contamination on the second negative pressure plate 600 to drip down at the rear end, thereby improving the collection efficiency of the oil contamination on the second negative pressure plate 600.

[0079] In some embodiments, as Figure 9 As shown, the rear end of the second negative pressure plate 600 extends to the rear side of the top end of the first negative pressure plate 200, so that part of the oil stains on the second negative pressure plate 600 can flow from its rear end to the first negative pressure plate 200, and then flow from the first negative pressure plate 200 and the smoke hood assembly 100 to the oil cup 400.

[0080] In order to facilitate cleaning of the first negative pressure plate 200 , the first negative pressure plate 200 and the smoke collecting hood assembly 100 are detachably connected to facilitate removal of the first negative pressure plate 200 for cleaning.

[0081] In some embodiments, a first rotating portion 211 and a first plug-in portion 212 are provided on the first negative pressure plate 200, and the first rotating portion 211 and the first plug-in portion 212 are respectively located at both ends of the first negative pressure plate 200; correspondingly, a second rotating portion 120 and a second plug-in portion 130 are provided on the front side of the smoke hood assembly 100, and the first rotating portion 211 and the second rotating portion 120 are detachably rotatably connected, and the first plug-in portion 212 and the second plug-in portion 130 are plugged in to fix the first negative pressure plate 200 to the smoke hood assembly 100.

[0082] When installing the first negative pressure plate 200, the first rotating part 211 can be matched with the second rotating part 120 first, and the first negative pressure plate 200 can be rotated with the matching position of the two as the hinge point, so that the first plug-in part 212 and the second plug-in part 130 are aligned and plug-fitted to complete the assembly.

[0083] In some embodiments, a first rotating portion 211 is provided on both sides of the top end of the first negative pressure plate 200, and a first plug-in portion 212 is provided on both sides of the bottom end of the first negative pressure plate 200 to improve the fixing effect of the first negative pressure plate 200 and the smoke hood assembly 100.

[0084] To facilitate cleaning of the second negative pressure plate 600 , the second negative pressure plate 600 and the shielding portion 500 are detachably connected, so that the second negative pressure plate 600 can be removed for cleaning according to the degree of oil stains attached to the second negative pressure plate 600 .

[0085] In some embodiments, the top surface of the second negative pressure plate 600 is provided with a third rotating portion 620 and a third plugging portion 610. Correspondingly, the bottom surface of the upper plate 510 is provided with a fourth rotating portion 512 and a fourth plugging portion 511. The third rotating portion 620 and the fourth rotating portion 512 can be rotatably matched, and the third plugging portion 610 and the fourth plugging portion 511 can be plugged together to suspend the second negative pressure plate 600 below the upper plate 510. When installing the second negative pressure plate 600, the third rotating portion 620 can be first matched with the fourth rotating portion 512, and the second negative pressure plate 600 can be rotated with the matching position of the two as a hinge point to align the third plugging portion 610 and the fourth plugging portion 511 and plug them together.

[0086] In some embodiments, a third rotating portion 620 is provided on both sides of the front end of the second negative pressure plate 600, and a third plug-in portion 610 is provided on both sides of the rear end of the second negative pressure plate 600 to improve the fixing effect of the second negative pressure plate 600 and the shielding portion 500.

[0087] In some embodiments, the first rotating portion 211 and the third rotating portion 620 have the same structure, and correspondingly, the second rotating portion 120 and the fourth rotating portion 512 have the same structure; the first plug-in portion 212 and the third plug-in portion 610 have the same structure, and correspondingly, the second plug-in portion 130 and the fourth plug-in portion 511 have the same structure.

[0088] For example, in combination Figure 9 and Figure 10 As shown, the third rotating part 620 is a hook, and the fourth rotating part 512 includes a hanging rod 5122. The hook can be hung on the hanging rod 5122 to achieve the initial positioning of the second negative pressure plate 600 and the shielding part 500, which facilitates the cooperation between the third plug-in part 610 and the fourth plug-in part 511.

[0089] Specifically, the fourth rotating part 512 also includes two limiting plates 5121 arranged opposite to each other, and the hanging rod 5122 is respectively connected to the two limiting plates 5121. When the hook is matched with the hanging rod 5122, it is located between the two limiting plates 5121 to limit the hook and improve the matching stability.

[0090] Exemplarily, the hook is located at the rear end of the second negative pressure plate 600, the third plug-in portion 610 is located at the front end of the second negative pressure plate 600, and the opening of the hook faces the rear side, thereby increasing the stability of the hook-to-hook cooperation and preventing separation.

[0091] Exemplarily, the fourth plug-in portion 511 can be a plug-in slot 5111, and the third plug-in portion 610 can be removed into the plug-in slot 5111 and snap-fit or interference-fit with the plug-in slot 5111 to achieve the purpose of fixing the second negative pressure plate 600.

[0092] In some embodiments, the third rotating portion 620 may include a hanging rod, and correspondingly, the fourth rotating portion 512 is a hook; the third plugging portion 610 may be a plugging slot, and correspondingly, the fourth plugging portion 511 is inserted into the plugging slot.

[0093] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A range hood, characterized in that: include: A smoke collecting hood assembly (100), wherein a smoke inlet (110) is provided on the front side of the smoke collecting hood assembly (100); A fan assembly (300) is disposed in the smoke collecting hood assembly (100), and an air inlet of the fan assembly (300) is in communication with the smoke inlet (110); A first negative pressure plate (200) is connected to the smoke hood assembly (100) and is located in front of the smoke inlet (110). The first negative pressure plate (200) and the front side of the smoke hood assembly (100) are spaced apart and enclose a side flow channel, and an air inlet gap is formed on at least one side of the side flow channel in a circumferential direction.

2. The range hood according to claim 1, characterized in that: The first negative pressure plate (200) comprises: a main board body (210), the main board body (210) being parallel to and spaced apart from the front side surface of the smoke collecting hood assembly (100); A guide plate (220), the top end of the guide plate (220) is connected to the bottom end of the main body (210), the guide plate (220) is tilted toward the smoke hood assembly (100), and the bottom end of the guide plate (220) is in contact with or spaced from the front side of the smoke hood assembly (100).

3. The range hood according to claim 2, characterized in that: The bottom end of the fume hood assembly (100) is connected to an oil cup (400), and the orthographic projection of the bottom end of the guide plate (220) and the orthographic projection of the front side of the fume hood assembly (100) are both located in the oil cup (400).

4. The range hood according to any one of claims 1 to 3, characterized in that: The size of the first negative pressure plate (200) in the left-right direction is smaller than or equal to the size of the smoke hood assembly (100) in the left-right direction, and the projection of the first negative pressure plate (200) in the front-back direction is located on the front side of the smoke hood assembly (100).

5. The range hood according to any one of claims 1 to 3, characterized in that: The first negative pressure plate (200) is detachably connected to the smoke collecting hood assembly (100).

6. The range hood according to claim 5, characterized in that: One end of the first negative pressure plate (200) is provided with a first rotating part (211), and the other end is provided with a first plug-in part (212); the smoke hood assembly (100) is provided with a second rotating part (120) and a second plug-in part (130); the first rotating part (211) and the second rotating part (120) are detachable and rotatable, and the first plug-in part (212) and the second plug-in part (130) are plug-in compatible.

7. The range hood according to any one of claims 1 to 3, characterized in that: The range hood further comprises: A shielding portion (500) is connected to the top end of the smoke collecting hood assembly (100) and extends from the smoke collecting hood assembly (100) toward the front side; A second negative pressure plate (600) is suspended below the shielding portion (500), and the space between the shielding portion (500) and the second negative pressure plate (600) forms an upper flow channel, which is communicated with the smoke inlet (110).

8. The range hood according to claim 7, characterized in that: The number of the smoke inlet (110) is set to one, the upper end of the smoke inlet (110) extends above the second negative pressure plate (600), and part of the smoke inlet (110) is arranged opposite to the first negative pressure plate (200).

9. The range hood according to claim 7, characterized in that: The rear end of the second negative pressure plate (600) extends to the rear side of the top end of the first negative pressure plate (200); And / or, the second negative pressure plate (600) is arranged to be tilted downward from front to back; And / or, the second negative pressure plate (600) is detachably connected to the shielding portion (500); And / or, an air inlet notch (213) is provided at the top end of the first negative pressure plate (200).

10. The range hood according to claim 7, characterized in that: The shielding portion (500) comprises: an upper plate (510), the upper plate (510) extending horizontally and connected to the smoke hood assembly (100), the second negative pressure plate (600) being suspended below the upper plate (510); The front plate (520) is connected to the front end of the upper plate (510), and the front plate (520) extends downward from the upper plate (510). The front end of the second negative pressure plate (600) is spaced apart from the front plate (520).

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