Range hood

Abstract

The range hood comprises a main box, a shell, an oil net assembly, an oil cup, a smoke collecting cavity and a fan, the top of the smoke collecting cavity is wound around the periphery of a through part, and the bottom of the smoke collecting cavity is wound around the periphery of the oil net assembly and the periphery of the oil cup; a top oil guide structure located below the through opening is formed in the top of the smoke collecting cavity, a bottom oil guide structure is formed in the bottom of the smoke collecting cavity, and the top oil guide structure and the bottom oil guide structure are used for guiding oil into the oil cup. The top oil guide structure positioned below the through hole is formed at the top of the smoke collecting cavity, and the bottom oil guide structure is formed at the bottom of the smoke collecting cavity, so that accumulated oil in the range hood can be effectively guided into an oil cup and is prevented from being agglutinated on the top plate of the shell; and the risk that oil drops on the coaming of the main box drop on a cooking bench or in a pot through the meshes of the oil net is reduced, and the user experience is improved.

Description

Technical Field

[0001] This utility model belongs to the field of kitchen appliance technology, specifically, it relates to a range hood. Background Technology

[0002] The main structure of a range hood includes a main box, a shell (also called a smoke hood), a fan, an oil filter, and an oil cup. The main box has a smoke exhaust port. The shell is located below the main box, which is situated on the top plate of the shell. A smoke collection chamber is formed inside the shell and is connected to the internal space of the main box. A smoke inlet is formed on the front side plate of the shell, which is connected to the smoke collection chamber. The fan includes a duct casing and an impeller. The duct casing has an air intake and an air outlet. The air intake is connected to the smoke collection chamber, and the air outlet is connected to the smoke exhaust port. The oil filter is placed on the smoke inlet of the shell. The oil cup is located below the bottom oil guide plate of the shell. The oil guide plate has multiple drip holes, through which the condensed oil droplets flow into the oil cup for collection during use.

[0003] Based on their installation location and exhaust method, range hoods are divided into side-draft range hoods and top-draft range hoods. Side-draft range hoods are typically installed against the wall, located on the side of the smoke source. Their front panel is angled, and the fan is also installed at a corresponding angle. During operation, the fan impeller rotates at high speed, creating a negative pressure zone in the space above the stove. This draws the fumes into the range hood, where they undergo initial oil-fume separation through an oil filter. Then, they enter the fan's volute duct, where the impeller's rotation performs a second oil-fume separation. The fumes in the duct are subjected to centrifugal force, causing the oil mist to condense into oil droplets. These droplets are collected in an oil cup, and the purified fumes are finally discharged through the exhaust duct.

[0004] In related technologies, side-suction range hoods have high oil fume extraction efficiency due to their proximity to the smoke source. Their oil circuit design is usually relatively simple, typically with multiple oil guide holes arranged along the length direction below the bottom edge of the oil screen, oil guide holes set at the lowest position of the air duct volute, and oil dripping holes set on the oil guide plate of the shell.

[0005] For side-draft range hoods with small housing volume, the distance between the front panel and the top panel of the housing is small, which in turn results in a small distance between the oil filter and the top panel, and a small distance between the oil filter and the main chamber. After the oil and smoke are separated by the oil filter for the first time, some of the oil and smoke will directly reach the top panel or the main chamber, where it will condense into oil droplets. Some of these oil droplets will drip onto the stove or into the pot through the mesh of the oil filter, resulting in a poor user experience.

[0006] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0007] This utility model proposes a range hood that can solve the problem in related technologies where side-suction range hoods with small housing volume cause some oil fumes to condense into oil droplets on the top plate or main enclosure of the housing and fall onto the stove or into the pot.

[0008] To address the aforementioned technical problems, some embodiments of this application provide a range hood, comprising:

[0009] The main box has a smoke exhaust port at the top and a through section at the bottom;

[0010] The housing includes a top plate, a front side plate, a rear back plate, and a bottom oil guide plate, wherein the front side plate includes a first inclined portion on which a smoke inlet is formed;

[0011] An oil mesh assembly is installed on the smoke inlet and has the same inclination direction as the first inclined portion;

[0012] An oil cup is installed below the oil guide plate;

[0013] A smoke collection chamber is formed within the housing. The top of the smoke collection chamber surrounds the periphery of the through-hole to communicate with the internal space of the main box. The bottom of the smoke collection chamber surrounds the periphery of the oil mesh assembly and the oil cup. A top oil guiding structure is formed on the top of the smoke collection chamber below the through-hole, and a bottom oil guiding structure is formed on the bottom of the smoke collection chamber to guide the oil into the oil cup.

[0014] A fan includes a duct casing and an impeller. The duct casing has an air intake and an air outlet. The air intake is connected to the smoke collection chamber, and the air outlet is connected to the smoke exhaust port.

[0015] In some embodiments of this application, the smoke collection chamber is formed by a smoke collection chamber plate and the rear back plate of the housing. The outer contour of the oil mesh assembly is rectangular. The smoke collection chamber plate includes a front sealing plate, a left sealing plate, and a right sealing plate. The tops of the front sealing plate, the left sealing plate, and the right sealing plate are located outside the front side, the left side, and the right side of the through portion, respectively. The bottoms of the front sealing plate, the left sealing plate, and the right sealing plate are located outside the front side, the left side, and the right side of the oil mesh assembly, respectively. The rear ends of the left sealing plate and the right sealing plate are both fitted and fixedly connected to the rear back plate of the housing.

[0016] In some embodiments of this application, the top oil guiding structure includes a top left oil guiding groove formed on the top inner wall of the left sealing plate and a top right oil guiding groove formed on the top inner wall of the right sealing plate; both the top left oil guiding groove and the top right oil guiding groove are inclined straight grooves extending back and forth, and their inclination direction is the same as the inclination direction of the first inclined surface; the top left oil guiding groove is located below the left side of the through portion and its rear end is located above the oil cup, and the top right oil guiding groove is located below the right side of the through portion and its rear end is located above the oil cup.

[0017] In some embodiments of this application, the bottom oil guiding structure includes a bottom front oil guiding groove, a bottom left oil guiding groove, and a bottom right oil guiding groove located on the outer sides of the front, left, and right sides of the oil mesh assembly, respectively. The bottom left oil guiding groove and the bottom right oil guiding groove are both inclined straight grooves extending back and forth, and their inclination direction is the same as that of the first inclined surface. The left and right ends of the bottom front oil guiding groove are connected to the front end of the bottom left oil guiding groove and the front end of the bottom right oil guiding groove, respectively. The rear end of the bottom left oil guiding groove and the rear end of the bottom right oil guiding groove are connected to the oil cup.

[0018] In some embodiments of this application, the front sealing plate includes a second inclined portion, the inclination direction of which is the same as that of the first inclined portion; the two ends of the second inclined portion are respectively connected to the left sealing plate and the right sealing plate as a whole, and the bottom edge of the second inclined portion is connected to the bottom front guide oil groove.

[0019] In some embodiments of this application, the oil mesh assembly includes a first oil mesh and a second oil mesh arranged on the left and right sides, the first oil mesh and the second oil mesh being separated by a partition and connected as a whole.

[0020] In some embodiments of this application, the bottom oil guiding structure further includes a central oil guiding groove formed on the partition plate. The central oil guiding groove is an inclined straight groove extending front and back, and its inclination direction is the same as that of the first inclined surface. A first connecting hole is formed in the middle of the bottom front oil guiding groove, and a second connecting hole is formed in the middle of the oil guiding plate. The two ends of the central oil guiding groove are respectively connected to the bottom front oil guiding groove and the oil guiding plate through the first connecting hole and the second connecting hole.

[0021] In some embodiments of this application, both the left sealing plate and the right sealing plate are inclined, and their inclination direction is the same as that of the first inclined surface.

[0022] In some embodiments of this application, an oil baffle is provided on the bottom surface of the top plate of the main box, and the oil baffle is located in front of the air outlet of the air duct volute; the oil baffle extends to the left and right and is inclined, and its inclination direction is the same as the inclination direction of the first inclined part, and the rear side of the oil baffle is in contact with the air duct volute.

[0023] In some embodiments of this application, the fan is installed at an angle, with the same tilt direction as the first inclined section.

[0024] Compared with the prior art, the range hood provided in this application, by forming a top oil guiding structure below the through-hole at the top of the smoke collection chamber and a bottom oil guiding structure at the bottom of the smoke collection chamber, can effectively guide the oil accumulated inside the range hood into the oil cup, prevent oil from condensing on the top plate of the shell, and reduce the risk of oil droplets on the main box enclosure dripping onto the stove or pot through the oil mesh, thus improving the user experience.

[0025] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a perspective view of the front side of the range hood in this embodiment of the utility model;

[0028] Figure 2 This is a perspective view of the rear side of the range hood in this embodiment of the utility model;

[0029] Figure 3 This is a side view of the range hood in an embodiment of this utility model;

[0030] Figure 4 This is a side view of the range hood in this embodiment of the invention, omitting the left side panel and the smoke collection chamber panel;

[0031] Figure 5 This is a front-view perspective view of the range hood in this embodiment of the present invention, omitting the control panel and the flip panel;

[0032] Figure 6 This is a rear perspective view of the range hood in this embodiment of the present invention, omitting the rear back panel of the housing and the rear back panel of the main box.

[0033] Figure 7This is a rear perspective view of the range hood in this embodiment of the utility model, omitting the rear panel of the housing, the rear panel of the main box, and the fan.

[0034] Figure 8 This is a perspective view of the smoke collection chamber plate of the range hood in this embodiment of the utility model;

[0035] Figure 9 This is a perspective view of the assembly structure of the smoke collection chamber plate, oil screen, oil guide plate and oil cup of the range hood in this embodiment of the present utility model.

[0036] Figure 10 This is a perspective view of another angle of the assembly structure of the smoke collection chamber plate, oil screen, oil guide plate and oil cup of the range hood in this embodiment of the present utility model;

[0037] Figure 11 This is a perspective view of the assembly structure of the smoke collection chamber plate, oil screen, oil guide plate and oil cup of the range hood in this embodiment of the utility model.

[0038] Figure 12 This is a perspective view of the front side of the oil filter assembly of the range hood in this embodiment of the present invention;

[0039] Figure 13 This is a perspective view of the oil filter assembly of the range hood in this embodiment of the present invention from the rear side.

[0040] Figure 14 This is an exploded view of the oil filter assembly of the range hood in this embodiment of the present invention;

[0041] Figure 15 This is a schematic diagram of the oil baffle structure of the range hood in this embodiment of the utility model.

[0042] In the picture:

[0043] 100. Main box; 110. Smoke vent; 120. Through section; 130. Main box enclosure; 140. Oil baffle;

[0044] 200. Housing; 210. Top plate; 220. Oil guide plate; 221. Oil drip hole; 222. Second connecting hole; 230. Front side plate; 231. First inclined section; 232. Smoke inlet; 240. Rear back plate;

[0045] 300. Oil mesh assembly; 310. First oil mesh; 320. Second oil mesh; 330. Partition plate; 331. Central oil guide groove;

[0046] 400, oil cup;

[0047] 500. Smoke collecting chamber plate; 510. Front sealing plate; 511. Bottom front oil guide groove; 512. Second inclined section; 513. First connecting hole; 520. Left sealing plate; 521. Top left oil guide groove; 522. Bottom left oil guide groove; 530. Right sealing plate; 531. Top right oil guide groove; 532. Bottom right oil guide groove;

[0048] 600. Fan; 610. Air duct casing; 620. Impeller; 630. Air intake; 640. Air outlet;

[0049] 700, flip board. Detailed Implementation

[0050] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0051] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0052] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. In the description of the embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0053] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0054] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0055] Reference Figures 1 to 15 In some embodiments of this application, a range hood is proposed, including a main box 100, with a smoke exhaust port 110 formed at the top and a through portion 120 formed at the bottom.

[0056] The range hood also includes a housing 200, which includes a top plate 210, an oil guide plate 220, a front side plate 230, and a rear plate 240. The oil guide plate 220 is located at the bottom of the housing 200 and is arranged opposite to the top plate 210, which is equivalent to the bottom plate of the housing 200. The oil guide plate 220 is provided with oil dripping holes 221. The front side plate 230 includes a first inclined part 231, and a smoke inlet 232 is formed on the first inclined part 231.

[0057] The main housing 100 is located on the top plate 210 of the housing 200, above the housing 200.

[0058] The range hood also includes an oil filter assembly 300, which is installed on the smoke inlet 232 to filter the oily fumes drawn into the range hood, achieving initial oil-fume separation. Correspondingly, the oil filter assembly 300 is also inclined, with the same inclination direction as the first inclined section 231.

[0059] In some embodiments of this application, such as Figure 5 , Figure 7 , Figures 9 to 14 As shown, the oil mesh assembly 300 includes a first oil mesh 310 and a second oil mesh 320 arranged on the left and right sides. The first oil mesh 310 and the second oil mesh 320 are separated by a partition 330 and connected as a whole by the partition 330.

[0060] In some embodiments of this application, the oil mesh is not a single component, but rather consists of two oil mesh components, a first oil mesh 310 and a second oil mesh 320, connected as one unit by an intermediate connector, namely a partition 330, which can be achieved by screws. The partition 330 separates the first oil mesh 310 and the second oil mesh 320, effectively dividing the smoke inlet 232 into left and right sections, thereby increasing the negative pressure at both smoke inlets and improving the smoke extraction effect.

[0061] To facilitate processing and ensure universal installation, the first oil mesh 310 and the second oil mesh 320 are completely identical.

[0062] The range hood also includes an oil cup 400, which is installed below the oil guide plate 220. Oil accumulated on the oil guide plate 220 flows into the oil cup 400 through the oil dripping holes 221 on the oil guide plate 220 for unified collection. The oil cup 400 and the oil guide plate 220 are detachable and installable. The specific installation structure can be found in existing technology and will not be described in detail here.

[0063] The range hood also includes a smoke collection chamber, which is formed inside the housing 200. The top of the smoke collection chamber is arranged around the periphery of the bottom through-hole 120 of the main housing 100 so that the smoke collection chamber communicates with the internal space of the main housing 100; the bottom of the smoke collection chamber is arranged around the periphery of the oil filter assembly 300 and the oil cup 400.

[0064] The range hood also includes a fan 600, which comprises a duct housing 610 and an impeller 620. The duct housing 610 has an air intake 630 and an air outlet 640. The air intake 630 is connected to the smoke collection chamber, and the air outlet 640 is connected to the exhaust port 110. After the oil fume undergoes a first oil-fume separation by the oil filter, it enters the smoke collection chamber and then enters the duct housing 610 of the fan 600. The rotation of the impeller 620 performs a second oil-fume separation on the oil fume gas. The oil fume in the duct housing 610 is subjected to centrifugal force, and the oil mist condenses into oil droplets, which are collected in the oil cup 400. The purified smoke is finally discharged through the exhaust port 110.

[0065] In some embodiments of this application, the fan 600 is installed at an angle, with the same inclination direction as the first inclined portion 231 of the front side plate 230, forming a side-suction range hood. The smoke inlet 232 of the side-suction range hood is positioned low to more effectively capture and remove cooking fumes.

[0066] In some embodiments of this application, the upper part of the fan 600 is located inside the main housing 100, and the lower part is located inside the smoke collection chamber, forming a side-suction range hood with the fan in the center, such as... Figure 4 and Figure 6 As shown.

[0067] In some embodiments of this application, the range hood further includes a flap assembly, which includes a flap 700 and a flap drive mechanism. The flap drive mechanism is installed inside the housing and located outside the smoke collection chamber. The flap 700 is rotatably connected to the first inclined surface 231 to open or close the oil filter. The flap drive mechanism is connected to the flap 700 to drive the flap 700 to rotate. The specific structure of the flap assembly is the same as in the prior art and will not be described in detail here.

[0068] For range hoods with a smaller housing 200, the distance between the front panel 230 and the top panel 210 of the housing 200 may be reduced. Consequently, the distance between the oil filter assembly 300 and the top panel 210 of the housing 200, as well as the distance between the oil filter assembly 300 and the main box 100, will be smaller. After the first oil fume separation by the oil filter assembly 300, some of the oil fume will directly reach the top panel 210 or the main box 100 of the housing 200, where it will condense into oil droplets on the top panel 210 or the main box enclosure 130. Some of these oil droplets will drip onto the stove or into the pot through the mesh of the oil filter assembly 300, resulting in a poor user experience.

[0069] To address this issue, in some embodiments of this application, a top oil guiding structure is formed at the top of the smoke collection chamber below the through opening of the main box 100, and a bottom oil guiding structure is formed at the bottom of the smoke collection chamber. Both the top and bottom oil guiding structures are used to guide oil into the oil cup 400.

[0070] In some embodiments of this application, such as Figures 6 to 11 As shown, the smoke collection chamber is formed by the smoke collection chamber plate 500 and the back plate 240 of the shell 200.

[0071] Taking the smoke inlet 232 of the housing 200 as rectangular and the outer contour of the oil mesh assembly 300 as correspondingly rectangular, the smoke collection chamber plate 500 includes a front sealing plate 510, a left sealing plate 520, and a right sealing plate 530. The tops of the front sealing plate 510, left sealing plate 520, and right sealing plate 530 are located on the front, left, and right sides of the through portion 120, respectively; the bottoms of the front sealing plate 510, left sealing plate 520, and right sealing plate 530 are located on the outer sides of the front, left, and right sides of the oil mesh assembly 300, respectively; and the rear ends of the left sealing plate 520 and right sealing plate 530 are both fitted and fixedly connected to the rear back plate 240 of the housing 200. The front sealing plate 510, left sealing plate 520, and right sealing plate 530 can prevent oil droplets from condensing on the top plate 210 of the housing 200.

[0072] In some embodiments of this application, the smoke collection chamber plate 500 may be a single sheet metal piece, or it may be multiple sheet metal pieces connected together by fasteners.

[0073] Furthermore, the tops of the front sealing plate 510, the left sealing plate 520, and the right sealing plate 530 are all fixedly connected to the top plate 210 of the housing 200, and the bottoms of the front sealing plate 510, the left sealing plate 520, and the right sealing plate 530 are all fixedly connected to the front side plate 230 of the housing 200, so as to stabilize the smoke collection chamber structure.

[0074] In some embodiments of this application, the top oil guiding structure includes a top left oil guiding groove 521 formed on the top inner wall of the left sealing plate 520 and a top right oil guiding groove 531 formed on the top inner wall of the right sealing plate 530; both the top left oil guiding groove 521 and the top right oil guiding groove 531 are inclined straight grooves extending back and forth, and their inclination direction is the same as the inclination direction of the first inclined part 231; the top left oil guiding groove 521 is located on the lower left side of the through part 120 and its rear end is located above the oil cup 400, and the top right oil guiding groove 531 is located on the lower right side of the through part 120 and its rear end is located above the oil cup 400.

[0075] Oil dripping from the inner walls of the left and right sides of the main enclosure 130 into the top left oil guide groove 521 and the top right oil guide groove 531 flows backward under the guidance of the top left oil guide groove 521 and the top right oil guide groove 531 to their rear ends, and finally flows downward into the oil guide plate 220, and then into the oil cup 400. The oil flow direction is as follows: Figures 9 to 11 The arrows indicate the location of the top left guide oil groove 521 and the top right guide oil groove 531.

[0076] In some embodiments of this application, the main housing 100 has a rectangular cross-section, and its through portion 120 corresponds to a rectangular through hole. The top left oil guide groove 521 is located directly below the left side of the through portion 120, and the top right oil guide groove 531 is located directly below the right side of the through portion 120. Figure 7 As shown.

[0077] In some embodiments of this application, the bottom oil guiding structure includes a bottom front oil guiding groove 511, a bottom left oil guiding groove 522, and a bottom right oil guiding groove 532. The bottom front oil guiding groove 511 is formed on the front sealing plate 510 and is located on the outer side of the front side of the oil mesh assembly 300. The bottom left oil guiding groove 522 is formed on the left sealing plate 520 and is located on the outer side of the left side of the oil mesh assembly 300. The bottom right oil guiding groove 532 is formed on the right sealing plate 530 and is located on the outer side of the right side of the oil mesh assembly 300.

[0078] The bottom left guide oil groove 522 and the bottom right guide oil groove 532 are both inclined straight grooves extending back and forth, and their inclination direction is the same as that of the first inclined surface 231; the bottom front guide oil groove 511 extends left and right, and its left and right ends are respectively connected to the front end of the bottom left guide oil groove 522 and the front end of the bottom right guide oil groove 532, and the rear end of the bottom left guide oil groove 522 and the rear end of the bottom right guide oil groove 532 are connected to the oil cup 400.

[0079] The oil accumulated at the front of the main box panel 130 flows into the bottom front guide oil groove 511, and then flows to the bottom left guide oil groove 522 and bottom right guide oil groove 532 on both sides. From the bottom left guide oil groove 522 and bottom right guide oil groove 532, the oil flows to the oil cup 400. The oil flow direction is as follows: Figure 10 and Figure 11 The arrows on the bottom front guide oil groove 511, bottom left guide oil groove 522, and bottom right guide oil groove 532 indicate that the oil accumulated on the inner walls of the left sealing plate 520 and the right sealing plate 530 can also flow to the oil cup 400 through the bottom left guide oil groove 522 and the bottom right guide oil groove 532.

[0080] In some embodiments of this application, the front sealing plate 510 includes a second inclined portion 512, the inclination direction of which is the same as that of the first inclined portion 231; the left and right ends of the second inclined portion 512 are respectively connected to the left sealing plate 520 and the right sealing plate 530 as a single unit, and the bottom edge of the second inclined portion 512 is connected to the bottom front guide oil groove 511, the left and right ends of the bottom front guide oil groove 511 being located at the left and right ends of the second inclined portion 512 respectively. Oil accumulated at the front of the main box 100 enclosure flows onto the second inclined portion 512 of the front sealing plate 510, and under the guiding action of the second inclined portion 512, it can flow smoothly and quickly to the bottom front guide oil groove 511, improving oil collection efficiency.

[0081] In some embodiments of this application, the same applies. Figures 9 to 11 As shown, the bottom oil guiding structure also includes a central oil guiding groove 331 formed on the partition 330 of the oil mesh assembly 300.

[0082] Specifically, the middle oil guide groove 331 is an inclined straight groove extending front and back, and its inclination direction is the same as that of the first inclined part 231; a first connecting hole 513 is formed in the middle of the bottom front oil guide groove 511, and a second connecting hole 222 is formed in the middle of the oil guide plate 220. The two ends of the middle oil guide groove 331 are connected to the bottom front oil guide groove 511 and the oil guide plate 220 through the first connecting hole 513 and the second connecting hole 222, respectively.

[0083] The partition 330 can be a sheet metal structure, formed by bending or stamping to create a central oil guide groove 331.

[0084] By setting a central oil guide groove 331, which works in conjunction with the bottom left oil guide groove 522 and the bottom right oil guide groove 532, the oil accumulated at the front of the main box 100 panel flows into the bottom front oil guide groove 511. The oil near the left and right ends of the bottom front oil guide groove 511 flows into the bottom left oil guide groove 522 and the bottom right oil guide groove 532 respectively, and then flows to the oil cup 400. The oil near the middle of the bottom front oil guide groove 511 flows into the central oil guide groove 331, and then into the oil cup 400, so that the oil in the bottom front oil guide groove 511 flows into the oil cup 400 as quickly and thoroughly as possible, thereby improving the oil guiding effect.

[0085] In some embodiments of this application, the bottom surface of the bottom front guide oil groove 511 may also be provided with a certain slope so that the oil inside can flow smoothly into the bottom left guide oil groove 522, the bottom right guide oil groove 532 and the middle guide oil groove 331.

[0086] To facilitate the smooth flow of oil accumulated on the inner walls of the left sealing plate 520 and the right sealing plate 530 into the bottom left oil guide groove 522 and the bottom right oil guide groove 532, and then into the oil cup 400, in some embodiments of this application, the left sealing plate 520 and the right sealing plate 530 are both inclined, and their inclination direction is the same as that of the first inclined surface 231. This allows the oil accumulated on the inner walls of the left sealing plate 520 and the right sealing plate 530 to flow along the inclined surface to the back plate 240, and then into the oil cup 400, preventing oil from dripping onto the stove or into the pot.

[0087] In some embodiments of this application, such as Figure 4 and 15 As shown, an oil baffle 140 is provided on the bottom surface of the top plate of the main box 100. The oil baffle 140 is located in front of the air outlet 640 of the air duct volute 610. The oil baffle 140 extends to the left and right and is inclined. Its inclination direction is the same as that of the first inclined part 231. The rear side of the oil baffle 140 is in contact with the air duct volute 610, so that a part of the oil accumulated on the top plate of the main box 100 can be guided along the oil baffle 140 to the surface of the air duct volute 610 and flow into the oil cup 400 along the surface of the volute, thereby reducing the occurrence of oil dripping from the top plate of the main box 100 onto the stove or pot.

[0088] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by this utility model.

Claims

1. A range hood characterized by, include: The main box has a smoke exhaust port at the top and a through section at the bottom; The housing includes a top plate, a front side plate, a rear back plate, and a bottom oil guide plate, wherein the front side plate includes a first inclined portion on which a smoke inlet is formed; An oil mesh assembly is installed on the smoke inlet and has the same inclination direction as the first inclined portion; An oil cup is installed below the oil guide plate; A smoke collection chamber is formed within the housing. The top of the smoke collection chamber surrounds the periphery of the through portion to communicate with the internal space of the main box. The bottom of the smoke collection chamber surrounds the periphery of the oil mesh assembly and the oil cup. A top oil guiding structure is formed on the top of the smoke collection chamber below the through portion, and a bottom oil guiding structure is formed on the bottom of the smoke collection chamber to guide the oil into the oil cup. A fan includes a duct casing and an impeller. The duct casing has an air intake and an air outlet. The air intake is connected to the smoke collection chamber, and the air outlet is connected to the smoke exhaust port.

2. The range hood according to claim 1, characterized in that, The smoke collection chamber is formed by a smoke collection chamber plate and the rear back plate of the housing. The outer contour of the oil mesh assembly is rectangular. The smoke collection chamber plate includes a front sealing plate, a left sealing plate, and a right sealing plate. The tops of the front sealing plate, the left sealing plate, and the right sealing plate are located on the front, left, and right sides of the through portion, respectively. The bottoms of the front sealing plate, the left sealing plate, and the right sealing plate are located on the outer sides of the front, left, and right sides of the oil mesh assembly, respectively. The rear ends of the left sealing plate and the right sealing plate are both fitted and fixed to the rear back plate of the housing.

3. The range hood according to claim 2, characterized in that, The top oil guiding structure includes a top left oil guiding groove formed on the top inner wall of the left sealing plate and a top right oil guiding groove formed on the top inner wall of the right sealing plate; both the top left oil guiding groove and the top right oil guiding groove are inclined straight grooves extending back and forth, and their inclination direction is the same as that of the first inclined part; the top left oil guiding groove is located on the lower left side of the through part and its rear end is located above the oil cup, and the top right oil guiding groove is located on the lower right side of the through part and its rear end is located above the oil cup.

4. The range hood according to claim 2, characterized in that, The bottom oil guiding structure includes a bottom front oil guiding groove, a bottom left oil guiding groove, and a bottom right oil guiding groove located on the outer sides of the front, left, and right sides of the oil mesh assembly, respectively. The bottom left oil guiding groove and the bottom right oil guiding groove are both inclined straight grooves extending back and forth, and their inclination direction is the same as that of the first inclined surface. The left and right ends of the bottom front oil guiding groove are connected to the front end of the bottom left oil guiding groove and the front end of the bottom right oil guiding groove, respectively. The rear end of the bottom left oil guiding groove and the rear end of the bottom right oil guiding groove are connected to the oil cup.

5. The range hood according to claim 4, characterized in that, The front sealing plate includes a second inclined section, the inclination direction of which is the same as that of the first inclined section; the two ends of the second inclined section are respectively connected to the left sealing plate and the right sealing plate as a whole, and the bottom edge of the second inclined section is connected to the bottom front guide oil groove.

6. The range hood according to claim 4, characterized in that, The oil mesh assembly includes a first oil mesh and a second oil mesh arranged on the left and right sides, and the first oil mesh and the second oil mesh are separated by a partition and connected as a whole.

7. The range hood according to claim 6, characterized in that, The bottom oil guiding structure also includes a central oil guiding groove formed on the partition plate. The central oil guiding groove is an inclined straight groove extending back and forth, and its inclination direction is the same as that of the first inclined surface. A first connecting hole is formed in the middle of the bottom front oil guiding groove, and a second connecting hole is formed in the middle of the oil guiding plate. The two ends of the central oil guiding groove are connected to the bottom front oil guiding groove and the oil guiding plate through the first connecting hole and the second connecting hole, respectively.

8. The range hood according to claim 2, characterized in that, Both the left and right sealing plates are inclined, and their inclination direction is the same as that of the first inclined surface.

9. The range hood according to claim 1, characterized in that, An oil baffle is provided on the bottom surface of the top plate of the main box. The oil baffle is located in front of the air outlet of the air duct volute. The oil baffle extends to the left and right and is inclined. Its inclination direction is the same as that of the first inclined part. The rear side of the oil baffle is in contact with the air duct volute.

10. The range hood according to any one of claims 1 to 9, characterized in that, The fan is installed at an angle, with its tilt direction being the same as that of the first inclined section.

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