A range hood

Abstract

The application discloses a range hood, comprising a main box, a smoke collecting shell and a first oil guide part, wherein the main box comprises a first main box side wall on both sides of the main box and a second main box side wall on the rear side of the main box, a connecting part is arranged at the bottom of the first main box side wall, the smoke collecting shell is arranged below the main box and fixedly connected with the main box, an oil groove is arranged on the smoke collecting shell, the first oil guide part is connected with the connecting part and comprises an oil receiving and guiding part for receiving oil flowing down from the first main box side wall, the oil receiving and guiding part is arranged from one end of the first main box side wall to the other end of the first main box side wall, and a second connecting part is arranged at the bottom of the second main box side wall and close to the end of the first oil guide part, and the second connecting part is used for guiding oil in the oil receiving and guiding part into the oil groove. The oil path for collecting oil drops of the range hood in the prior art neglects the oil drops adhered to the inside of the main box, and the problem that the oil drops are prone to falling is solved.

Description

Technical Field

[0001] This invention belongs to the technical field of household kitchen appliances, specifically relating to an improvement in the structure of a range hood. Background Technology

[0002] Range hoods are an indispensable kitchen appliance in daily life. Cooking produces a large amount of oily fumes, and the range hood's function of removing and collecting these fumes solves kitchen health problems. The collection of oil from the internal filtration system is a crucial aspect of the range hood's function; improper design or structural problems in the internal oil filtration system can lead to oil leakage.

[0003] Most existing range hoods use a volute-oil guide groove-oil filter-oil cup oil circuit, which ignores the situation where oil droplets adhering to the inner wall of the main chamber slide down as the fumes are drawn in. Oil droplets that slide down the inner wall of the main chamber will pass through the inner and outer oil filters of the range hood and drip onto the stove, affecting the user experience. Summary of the Invention

[0004] This invention addresses the problem in existing range hoods where the oil droplet collection system neglects the issue of oil droplets adhering to the inside of the main chamber, leading to easy oil dripping. The invention proposes a novel range hood structure with a separate first oil guide for collecting oil droplets from the side wall of the main chamber, and a corresponding second connector. This not only collects oil droplets adhering to the inner wall of the main chamber but also, through the relevant oil path design, directly guides the oil into the oil trough, preventing oil droplets from falling along the side wall of the main chamber, passing through the inner and outer oil filters, and dripping onto the stovetop.

[0005] To achieve the above-mentioned objectives, the present invention employs the following technical solution:

[0006] A range hood includes:

[0007] The main container includes: a first main container side wall located on both sides of the main container and a second main container side wall located on the rear side of the main container, and a first connector is provided at the bottom of the first main container side wall;

[0008] A smoke collection shell is disposed below the main box and is fixedly connected to the main box;

[0009] An oil trough is fitted onto the smoke collection shell;

[0010] An external oil screen is located above the oil tank;

[0011] An inner oil mesh is fixedly connected to the outer oil mesh, and a first oil inlet channel is formed between the inner oil mesh and the outer oil mesh, and a second oil inlet channel is formed between the outer oil mesh and the oil tank.

[0012] The first oil guide element, connected to the first connector, includes:

[0013] An oil-collecting and guiding part is used to collect and guide the oil flowing down the side wall of the first main tank. The oil-collecting and guiding part extends from one end of the side wall of the first main tank to the other end of the side wall of the first main tank.

[0014] The second connector is connected to the bottom of the side wall of the second main box, near the end of the first oil guide, and is used to guide the oil in the oil-bearing and oil-guiding part into the oil tank through the first oil inlet channel and the second oil inlet channel.

[0015] Furthermore, the first connector includes a first connecting portion and a second connecting portion, the first connecting portion being connected to the side wall of the first main tank, and the second connecting portion being connected to the first oil guide.

[0016] Furthermore, the first oil guide includes:

[0017] First connecting member;

[0018] The second connecting member is connected to the first connecting member and is inclined towards the inside of the main box;

[0019] The third connecting member is inclined and connected to the second connecting member, forming the oil-bearing and oil-guiding part between them. The third connecting member is located on the inner side of the side wall of the first main box.

[0020] Furthermore, the oil-bearing and guiding part is an oil-bearing and guiding groove, which is inclined towards the second connecting member side.

[0021] Furthermore, the second connector includes:

[0022] The third connecting part is used to connect and fix the second connecting piece and the side wall of the second main box;

[0023] The second guide portion is connected to the first connecting portion and is inclined toward the oil tank side;

[0024] The fourth connecting part is connected and fixed to the second guide part and the smoke collection shell.

[0025] Furthermore, the oil trough is located below the fourth connecting part, and the orthographic projection of the fourth connecting part on the bottom surface of the oil trough is located within the area formed by the outline of the bottom surface of the oil trough.

[0026] Furthermore, it also includes: a third main tank sidewall, which is positioned opposite to the second main tank sidewall, and the orthographic projection of the third main tank sidewall onto the bottom wall of the oil tank is located within the area formed by the outline of the bottom wall of the oil tank.

[0027] Furthermore, an oil guiding cavity with one side open is formed in the first oil guiding member, and the inner diameter of the oil guiding cavity gradually increases from the direction away from the second connecting member to the direction closer to the second connecting member.

[0028] Furthermore, the third connecting part is fitted to the side wall of the second main box and is locked and fixed to the side wall of the second main box by a locking member.

[0029] Furthermore, the second guide portion and the third connecting portion have an included angle of 110-130 degrees.

[0030] Compared with the prior art, the advantages and positive effects of the present invention are:

[0031] The range hood structure proposed in this invention includes a first oil guide component located below the side wall of the first main box, which can collect oil droplets adhering to the side wall of the first main box.

[0032] Correspondingly, the present invention also provides a second connector, which can receive oil droplets in the first oil guide and collect oil droplets on the side wall of the second main tank. Finally, the collected oil droplets are guided into the oil tank after passing through the first oil inlet channel and the second oil inlet channel. This realizes the collection and drainage of oil droplets on the side wall of the main tank, effectively avoiding the problem of oil droplets adhering to the side wall of the main tank falling off, resulting in a good user experience.

[0033] Other features and advantages of the present invention will become clearer after reading the detailed embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 The overall structure of the range hood in this embodiment of the invention. Figure 1 ;

[0036] Figure 2 The overall structure of the range hood in this embodiment of the invention. Figure 2 ;

[0037] Figure 3 This is an exploded view of the range hood in an embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of the structure of the range hood's shell body in an embodiment of the present invention. Figure 1 ;

[0039] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0040] Figure 6 This is a schematic diagram of the structure of the range hood's casing in an embodiment of the invention. Figure 2 ;

[0041] Figure 7 This is an exploded view of the main casing structure of the range hood in an embodiment of the present invention;

[0042] Figure 8 This is a schematic diagram of the oil guiding component of the main box of the range hood in an embodiment of the present invention;

[0043] Figure 9 This is a schematic diagram of the connection between the main oil guiding component and the volute of the main casing of the range hood in an embodiment of the present invention;

[0044] Figure 10 This is a schematic diagram of the structure of the volute oil-guiding component of the range hood in an embodiment of the present invention. Figure 1 ;

[0045] Figure 11 This is a schematic diagram of the structure of the volute oil-guiding component of the range hood in an embodiment of the present invention. Figure 2 ;

[0046] Figure 12 This is a schematic diagram of the structure of the first oil guiding component of the range hood in an embodiment of the present invention;

[0047] Figure 13 This is a schematic diagram of the connection structure of the range hood, the first oil guide, and the main housing in an embodiment of the present invention. Figure 1 ;

[0048] Figure 14 This is a schematic diagram of the connection structure of the range hood, the first oil guide, and the main housing in an embodiment of the present invention. Figure 2 ;

[0049] Figure 15 This is a schematic diagram of the connection between the first connector, the first oil guide, and the side wall of the first main box of the range hood in an embodiment of the present invention;

[0050] Figure 16 This is a schematic diagram of the connection components of the range hood in an embodiment of the present invention;

[0051] Figure 17 This is a schematic diagram of the structure of the oil tank of the range hood in an embodiment of the present invention;

[0052] Figure 18 This is a schematic diagram of the structure of the oil filter inside the range hood in an embodiment of the present invention. Figure 1 ;

[0053] Figure 19 This is a schematic diagram of the structure of the oil filter inside the range hood in an embodiment of the present invention. Figure 2 ;

[0054] Figure 20 This is a force analysis diagram of oil droplets on the external oil screen of the range hood in an embodiment of the present invention;

[0055] Figure 21 This is a force analysis diagram of oil droplets on the external oil screen of the range hood in the first direction in an embodiment of the present invention;

[0056] Figure 22 This is a force analysis diagram of oil droplets on the outer oil screen of the range hood in the second direction in an embodiment of the present invention;

[0057] Figure 23 This is a diagram illustrating the direction of the resultant force on the oil droplets on the external oil screen of the range hood in an embodiment of the present invention.

[0058] Figure 24 This is a schematic diagram of the oil droplet and oil path structure of the range hood in an embodiment of the present invention. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0060] It should be noted that in the description of this invention, the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0061] This invention proposes an embodiment of a range hood, with reference to... Figures 1-24 As shown, it includes:

[0062] The smoke collection shell 110 has a cavity 111 inside it. A smoke collection chamber 120 is formed on the smoke collection shell 110 and is inclined towards the cavity 111. The smoke collection chamber 120 is used to collect and gather smoke. The depth of the smoke collection chamber 120 gradually decreases from the side closer to the user to the side farther away from the user.

[0063] In this embodiment, the side closer to the user refers to the side of the range hood that is closest to the user when it is assembled, which corresponds to the front side of the range hood. Conversely, the side farther from the user corresponds to the rear side of the range hood.

[0064] An installation port 131 is provided on the side of the smoke collection chamber 120 facing the stove, and an oil filter assembly 300 is installed at the installation port 131.

[0065] In this embodiment, the smoke collection chamber 120 is set at an angle. By setting the smoke collection chamber 120 at an angle from the front to the rear of the range hood, it can guide the oil fumes better, directing the large amount of oil fumes generated at the front to the oil mesh assembly 300 located at the installation port 131, so that the oil fumes can be quickly sucked away.

[0066] The smoke collection chamber 120 is deeper near the user and gradually decreases in depth as it moves further away from the user. This is because when the range hood is working, most of the fumes are concentrated in the area near the front. Setting the smoke collection chamber 120 at the front to be deeper improves the smoke collection effect and achieves better smoke gathering.

[0067] Specifically, the smoke collection chamber 120 includes:

[0068] The first component 121 is inclined, and its height near the user is greater than its height away from the user.

[0069] The first component 121 corresponds to the base plate of the smoke collection chamber 120, which is inclined from front to back, so as to achieve a better guiding effect on the oil fumes.

[0070] The second component 122 is connected to one side of the first component 121 and is inclined. Its orthographic projection onto the first component 121 is located outside the outline of the first component 121. The second component 122 corresponds to the front plate of the smoke collection chamber 120. It is also inclined and is offset outward relative to the first component 121.

[0071] The third component 123 is disposed opposite to the second component 122 and is connected to the other side of the first component 121. It is inclined and its orthogonal projection onto the first component 121 is located outside the outline of the first component 121. Correspondingly, the third component 123 is the rear plate of the smoke collection chamber 120 and is also inclined outward from the first component 121.

[0072] The fourth component 124 is provided in two parts, which are connected to the opposite side of the first component 121. Its two ends are respectively connected to the end connections of the second component 122 and the third component 123. Its orthographic projection onto the first component 121 is located outside the outline of the first component 121.

[0073] The fourth component 124 corresponds to the side plate of the smoke collection chamber 120, and there are two of them, which are offset outward relative to the first component 121.

[0074] The space corresponding to the smoke collection cavity 120, which is a kind of square pyramid structure formed by the second component 122, the third component 123, the fourth component 124, which are all set around the first component 121 and are offset outward from the first component 121, is increased, forming a large space smoke collection cavity 120 structure. In this way, more oil fumes can be collected, and a large amount of smoke collection effect is achieved.

[0075] Furthermore, since multiple components are inclined, during use, the second component 122, the third component 123, and the fourth component 124 around the perimeter can guide the oil fumes from all directions, directing the oil fumes into the smoke collection chamber 120, thus achieving a better smoke guiding effect.

[0076] Specifically, the installation port 131 is opened on the first component 121 of the smoke collection chamber 120, which can be used to discharge the oil fumes in the smoke collection chamber 120 to the outside.

[0077] Since the second component 122 and the third component 123 are respectively connected to the two opposite sides of the first component 121, their lengths are equal.

[0078] Preferably, the width of the second component 122 is greater than the width of the third component 123, and the included angle between the second component 122 and the first component 121 is greater than the included angle between the third component 123 and the first component.

[0079] The second component 122, located near the front of the range hood, is wider and has a larger tilt angle, which can effectively collect and guide the fumes from the front.

[0080] The first component 121, the second component 122, the third component 123 and the fourth component 124 are preferably integrally formed with the shell body 130.

[0081] Specifically, in this embodiment, the smoke collection shell 110 includes: a shell body 130, a back plate 140, and a cover plate 150, which together form the cavity 111.

[0082] The shell body 130 is composed of a shell bottom plate 134 and a shell surrounding plate 135 arranged around the shell bottom plate 134. The smoke collection chamber 120 is formed by recessing the shell bottom plate 134.

[0083] The shell enclosure 135 includes a front enclosure 1351 and side enclosures 1352 connected together. The front enclosure 1351 is connected to the front side of the bottom shell 134 and the front ends of the two side enclosures 1352. The side enclosures 1352 are connected to the two left and right sides of the bottom shell 134. The rear back plate 140 is correspondingly connected to the other two ends of the side enclosures 1352 and the rear side of the bottom shell 134.

[0084] The side panel 1352 is preferably inclined, and its height increases as it approaches the rear side.

[0085] An installation window 1353 is provided at the front panel 1351, and a touch screen is provided at the installation window 1353. The touch screen is equipped with touch control buttons and a main controller integrated into the touch screen. The main controller can be electrically connected to the touch control buttons and can be used to realize the relevant control of the range hood.

[0086] In specific connection, its bottom end is connected and fixed to the side panel 1352 and the bottom plate 134 by screws. In some embodiments, a folded edge can be provided at the side panel 1352 and a folded edge can be provided on the back plate 140. The two can be fixed and connected by screws. The back plate 140 is connected and fixed to the smoke collection shell 110 to form a cavity with an open top.

[0087] An upwardly extending section 141 is formed at the middle position of the rear panel 140, and an avoidance notch is provided on the extension section 141.

[0088] The left side, bottom side and right side of the back panel 140 are connected and fixed to the side panel 1352 and the bottom plate 134 of the shell, respectively. Its extension 141 extends upward and is fixedly connected to the main box 200. In some embodiments, it can be fixedly connected to the main box 200 by screws or bolts.

[0089] To enhance the overall strength of the range hood, a reinforcing rib 160 is connected to the back panel 140 and the shell body 130 on the side opposite to the back panel 140, spanning the entire smoke collection chamber 120. Multiple reinforcing ribs 160 are provided and are evenly spaced along the length of the back panel 140.

[0090] A first connecting foot is provided on the back panel 140, and a second connecting foot is provided on the shell body 130. The two ends of the reinforcing rib 160 plate are respectively locked and fixed to the first connecting foot and the second connecting foot by screws.

[0091] A cover plate 150 is provided at the assembly opening to seal the open position.

[0092] A ring-shaped engaging step 170 is formed on the top of a plurality of shell plates 135 of the shell body 130. The ring-shaped engaging step 170 includes a first horizontal step surface and a first vertical step surface. A locking hole is provided at the connection position of the first horizontal step surface and the first vertical step surface. The cover plate 150 includes a front side, a left side, a right side, and a rear side. A front flange, a rear flange, a left flange, and a right flange are respectively provided on the front side, the left side, the right side, and the rear side. A pin is provided on the front flange, the left flange, and the right flange. The height of the front flange, the left flange, and the right flange is the same as the height of the first vertical step surface. When connected, the front flange, the left flange, and the right flange are respectively inserted into the locking hole on the step of the smoke collection shell 110 through the pin. At the same time, the rear flange is wrapped around the outside of the back plate 140 and is connected and fixed to the back plate 140 by screws.

[0093] To facilitate the connection and fixation of the smoke collection shell 110, the back panel 140 and the main box 200, an assembly clearance opening 151 is provided on the cover plate 150 in this embodiment so that the smoke collection shell 110 and the back panel 140 can pass through for assembly.

[0094] A main box 200 is provided above the smoke collection shell 110. Preferably, in this embodiment, the main box 200 is a rectangular box with an accommodating space inside, and a volute assembly is provided inside the accommodating space.

[0095] Specifically, the main box 200 in this embodiment includes: a first main box side wall 211 located on both sides of the main box 200, a second main box side wall 212 located on the rear side of the main box 200, a main box top wall 214, and a third main box side wall 213 disposed opposite to the second main box side wall 212. The second main box side wall 212 and the third main box side wall 213 are disposed opposite to each other, that is, in this embodiment, the third main box side wall 213 is located on the front side of the main box 200 facing the user.

[0096] The volute 220 assembly includes a volute 220 and an impeller located inside the volute 220. To drive the impeller, the range hood in this embodiment also includes a motor. The motor and the impeller are connected by a transmission. The motor and the volute 220 assembly constitute a smoke extraction device. In use, the motor rotates at a high speed, driving the impeller to rotate and generating a negative pressure adsorption force to adsorb the generated oil fumes.

[0097] When the connection is fixed, the main box 200 is connected to the smoke collection shell 110 through the connecting component 500, and a corresponding smoke guiding chamber is formed inside the connecting component 500.

[0098] Specifically, the connection component 500 includes:

[0099] The first connector 510 has two parts, including:

[0100] The first connecting part 511 is connected to the first main box side wall 211. Preferably, the first connecting part 511 is a first vertical connecting plate, which is set to fit the outer side surface of the first main box side wall 211. During connection, it can be connected and fixed to the first main box side wall 211 by screwing.

[0101] The second connecting part 512 is formed by bending from the first connecting part 511 toward the side away from the main box 200. The second connecting part 512 can be configured as a second horizontal connecting plate that is perpendicular to the first vertical connecting plate and extends outward.

[0102] The first guide portion 513 is connected to the second connecting portion 512 and is inclined to the side away from the main box 200. The first guide portion 513 can be configured as a first inclined connecting plate that is inclined outward relative to the side wall 211 of the first main box, so as to guide the oil fumes.

[0103] In some preferred embodiments, the first inclined connecting plate is inclined along the width direction corresponding to the left and right sides of the main box 200 and the front and back directions corresponding to the front and back sides. By setting the first guide part to be inclined to the left and right sides and to the front and back sides, it can guide the oil fumes in both the front and back and left and right directions, thereby achieving a better smoke guiding effect.

[0104] The guide connecting part 514 is connected and fixed to the first guide part 513 and the smoke collection shell 110. It may be provided with a guide connecting plate, and may be set vertically or inclined, as long as it can be matched and connected with the smoke collection shell 110.

[0105] The second connector 520 is mated with the two first connectors 510 and is fixedly connected to the second main box side wall 212 and the smoke collection shell 110 respectively.

[0106] Specifically, the second connector 520 includes:

[0107] The third connecting part 521 is used to connect the second main box side wall 212. The third connecting part 521 can be configured as a third connecting plate.

[0108] The second guide portion 522 is connected to the third connecting portion 521 and is inclined toward the oil tank 310. The second guide portion 522 can be configured as a second guide plate.

[0109] The fourth connecting part 523 is connected and fixed to the second guide part 522 and the smoke collection shell 110. The fourth connecting part 523 can be configured as a fourth connecting plate for connecting purposes.

[0110] Furthermore, the connection component 500 in this embodiment also includes a third connector 530.

[0111] To connect the smoke collection shell 110 and the main housing 200, a folded connecting portion 180 is formed by folding upwards from the mounting opening 131. The folded connecting portion 180 includes a first connecting flange 181, a second connecting flange 182, and a third connecting flange 183 arranged circumferentially along the mounting opening 131. There are two first connecting flanges 181, which are arranged opposite to each other.

[0112] During connection, the two first connectors 510 are respectively attached to the guide connector 514 and the two first connecting flanges 181 and fixed with screws between them.

[0113] The second connecting flange 182 corresponds to and is attached to the fourth connecting part 523 and fixed by screws.

[0114] The third connecting flange 183 is partially attached to the third connecting piece 530 and fixed by screws. The other end of the third connecting piece 530 is fixedly connected to the side wall 213 of the third main box.

[0115] When setting the third connector 530, it can be set as an inclined plate or as a bent plate structure with multiple inclined sections and vertical sections alternating. No specific restrictions are made here.

[0116] In this embodiment, the first connector 510, the second connector 520 and the third connector 530 can be integrally formed during installation, or they can be formed separately and then fixed together by welding or screwing.

[0117] When forming the parts separately, the two ends of the second connector 520 can be connected and fixed to the two first connectors 510 respectively, and the third connector 530 can be connected and fixed to the other ends of the two first connectors 510 respectively.

[0118] To facilitate connection, matching and fitting folded edges can be provided at the mating positions of the first connector 510, the second connector 520, and the third connector 530. During connection, the folded edges are fitted together and then screwed in for fixation.

[0119] A first groove is provided on the outer wall of the main box 200 along the height direction of the main box 200.

[0120] A second groove is provided on the second connector 520, and the position of the second groove corresponds to the notch on the back panel 140 so that the second groove on the second connector 520 can be just exposed.

[0121] This allows the cables on the main box 200 to pass sequentially through the first cable tray on the main box 200 and the second cable tray on the second connector 520.

[0122] After the smoke collection shell 110 and the main box 200 are connected by the connecting component 500, a smoke guiding channel is formed between the main box 200, the connecting component 500 and the smoke collection shell 110.

[0123] When the range hood is working, the oil fumes are absorbed by the negative pressure generated by the high-speed rotation of the suction device. The oil fumes pass through the oil mesh assembly 300 and enter the smoke guide chamber formed by the connecting assembly 500. Then, they are guided into the main box 200 through the smoke guide chamber and finally discharged from the exhaust port at the top of the main box 200 after being absorbed.

[0124] The smoke guide cavity formed by the connecting component 500 in this embodiment increases the space for smoke storage inside the range hood, thus meeting the needs of the range hood for large-capacity smoke extraction.

[0125] The inner diameter of the smoke guiding cavity, which is formed by the connection of the first connector 510, the second connector 520 and the third connector 530, is constantly changing. Along the direction of oil fume flow, the inner diameter is larger near the smoke collecting shell 110, and the inner diameter is the largest when it reaches the middle position. Then, the closer it is to the main box 200, the smaller its inner diameter becomes.

[0126] In the structural design of range hoods, the main casing 200 is generally of a fixed size and relatively small. To meet the demand for larger smoke extraction, the installation port 131 should be made larger. This allows for the installation of a larger oil filter assembly 300, achieving better smoke extraction. However, a direct connection between the installation port 131 and the main casing 200 would not be compatible. The connecting component 500 in this embodiment provides a good transition. The inner diameter of the smoke guiding cavity, formed by the first connector 510, the second connector 520, and the third connector 530, changes continuously along the direction of smoke flow. It is larger near the smoke collection shell 110, reaches its maximum at the middle, and then decreases towards the main casing 200. This achieves both connection and meets the design requirements for a large smoke extraction volume.

[0127] Meanwhile, because the first connector 510 includes a first guide portion 513 that is inclined to the outside of the main box 200, and the second connector 520 also includes a second guide portion 522 that is inclined, the smoke guide cavity formed by the first connector 510 and the second connector 520 and the third connector 530 connected thereto makes the width of the entire smoke guide channel wider, making the air intake smoother, the amount of oil fume adsorbed is greater, and the adsorption effect is better.

[0128] By tilting the first connector 510 and the second connector 520 in the connecting assembly 500, a better smoke guiding effect can be achieved. For example, the two opposing first connectors 510, which are set on the two first main box side walls 211, can guide the smoke in an arc. Similarly, the second guide part 522 of the second connector 520 can also play a guiding role, so that the oil fumes can quickly enter the interior of the main box 200 along the tilted walls of the first connector 510 and the second connector 520, achieving a better oil fume absorption effect.

[0129] The specific structure of the outer oil mesh 320 in this embodiment includes an outer oil mesh diversion component 327, which includes two oppositely arranged first side edges 3271 and two oppositely arranged second side edges 3272. Preferably, the length of the first side edge 3271 is greater than that of the second side edge 3272. In this embodiment, the first side edge 3271 is located on the left and right sides of the outer oil mesh diversion component 327 when the range hood is installed. Correspondingly, the second side edge 3272 is located on the front and rear sides of the outer oil mesh diversion component 327.

[0130] The outer oil mesh enclosure is used to connect around the outer oil mesh diversion component 327. The connection between the outer oil mesh enclosure and the outer oil mesh diversion component 327 forms an inwardly concave recess. When the outer oil mesh 320 is assembled into the mounting port 131 of the smoke collection shell 110, the concave cavity structure on the outer oil mesh 320 is connected to the smoke collection chamber 120, thereby increasing the smoke collection space of the entire smoke collection chamber 120 and enabling the entire range hood to achieve a better smoke collection effect.

[0131] The outer oil mesh enclosure specifically includes:

[0132] Two first outer oil mesh enclosures 328 are provided, which are respectively connected to two first side panels 3271. Multiple first air inlets 3281 are provided on the first outer oil mesh enclosures 328, which are inclinedly arranged above them.

[0133] Preferably, the first outer oil mesh enclosure 328 is arranged at an angle, and its orthographic projection onto the outer oil mesh diversion component 327 is located outside the outline formed by the first side 3271 and the second side 3272 of the outer oil mesh diversion component 327. That is, the first outer oil mesh enclosure 328 in this embodiment is arranged at an angle to the outside.

[0134] By tilting the design, the space of the entire recessed cavity can be increased; in addition, by tilting the design, the fumes on the left and right sides of the range hood can be better guided.

[0135] In some preferred embodiments, the first air inlet 3281 is a first oblique elongated hole provided on the first outer oil mesh enclosure 328. The first oblique elongated hole is evenly distributed on the first outer oil mesh enclosure 328, and the length of the first oblique elongated hole corresponding to the center position of the first outer oil mesh enclosure 328 gradually decreases from the center position to the two sides.

[0136] In this embodiment, the first outer oil mesh enclosure 328 can be configured as a trapezoid, with its first oblique elongated hole opened along the diagonal of the trapezoid. The first oblique elongated hole at the middle position is the longest, and then the length of the first oblique elongated hole on both sides gradually becomes shorter.

[0137] Preferably, the longest first oblique hole is 280mm.

[0138] Two second outer oil mesh enclosures 329 are provided, which are respectively connected to two opposite second side panels 3272. The two second outer oil mesh enclosures 329 are symmetrically arranged, and multiple second air inlets 3291 are provided on the second outer oil mesh enclosures 329 at an angle above them.

[0139] Preferably, the second outer oil mesh enclosure 329 is arranged at an angle, and its orthographic projection onto the outer oil mesh diversion component 327 is located outside the outline formed by the first side 3271 and the second side 3272 of the outer oil mesh diversion component 327. That is, the second outer oil mesh enclosure 329 in this embodiment is also arranged at an angle to the outside.

[0140] By tilting the design, the space of the entire recessed cavity can be increased; in addition, by tilting the design, the fumes on the front and back sides of the range hood can be better guided.

[0141] In some preferred embodiments, the second air inlet 3291 is a second oblique elongated hole provided on the second outer oil mesh enclosure 329. The second oblique elongated hole is evenly distributed on the second outer oil mesh enclosure 329, and the length of the second oblique elongated hole corresponding to the center position of the second outer oil mesh enclosure 329 gradually shortens from the center position to the two sides.

[0142] In this embodiment, the second outer oil mesh enclosure 329 can be configured as a trapezoid, with its second oblique elongated holes arranged obliquely along the two parallel sides of the trapezoid. The second oblique elongated hole at the middle position has the longest length, and then the length of the corresponding second oblique elongated holes on both sides gradually becomes shorter.

[0143] When the range hood is working, the fumes rise and reach the outer oil mesh diversion component 327. The airflow is blocked and diverted by the outer oil mesh diversion component 327, causing the airflow to disperse in all directions. The fumes will flow to the first outer oil mesh enclosure 328 and the second oil mesh enclosure located around the outer oil mesh diversion component 327.

[0144] At the same time, the negative pressure in the area around the external oil mesh diversion component 327 is increased by the external oil mesh diversion component 327, which makes it easier for the oil fumes to be quickly sucked away.

[0145] Preferably, in this embodiment, the area of ​​the second outer oil mesh enclosure 329 is smaller than the area of ​​the first outer oil mesh enclosure 328.

[0146] Since the area of ​​the first outer oil mesh enclosure 328 in this embodiment is larger than the area of ​​the second outer oil mesh enclosure 329, after the action of the outer oil mesh diversion component 327, most of the oil fume flow flows out from the first outer oil mesh enclosure 328 at both sides.

[0147] The outer oil mesh diversion component 327 mainly increases the negative pressure in the area corresponding to the first outer oil mesh enclosure 328 on both sides, making the smoke extraction effect more significant.

[0148] After the oil fume airflow passes through the obstruction of the outer oil mesh diversion component 327, its flow direction will be deflected. In this embodiment, by opening the first oblique elongated hole and the second oblique elongated hole on the first outer oil mesh enclosure 328 and the second outer oil mesh enclosure 329 respectively, the direction of the deflectable airflow can be matched, so that the deflected airflow can pass through smoothly and is less likely to generate airflow turbulence problems, thereby making the adsorption of oil fumes smoother.

[0149] Meanwhile, a first oblique long hole and a second oblique long hole are respectively opened on the first outer oil mesh enclosure 328 and the second outer oil mesh enclosure 329. Compared with the method of directly opening a long straight hole, the area of ​​the opening is increased, thereby increasing the air intake area and making the air intake speed faster.

[0150] The external oil filter diversion component 327 is located below the main box 200, which can also block and catch oil, preventing oil from dripping directly onto the stovetop.

[0151] The outer oil mesh diversion component 327 is a smoothly transitioned curved surface segment plate. Preferably, the outer oil mesh diversion component 327 is an arc-shaped segment plate. Setting the outer oil mesh diversion component 327 to an arc shape can achieve oil guidance. Oil droplets dripping from the main box 200 onto the outer oil mesh 320 can flow along the arc-shaped segment plate to the surrounding outer oil mesh enclosure.

[0152] Due to the obstruction effect of the outer oil mesh diversion component 327 and the large area of ​​the first outer oil mesh enclosure 328, the oil fumes mainly enter the areas on both sides of the first outer oil mesh enclosure 328. In this embodiment, the angle between the centerline of the second air inlet 3291 and its adjacent second side 3272 is greater than the angle between the centerline of the first air inlet 3281 and its adjacent first side 3271. That is, the tilt angle of the first air inlet 3281 is larger than the tilt angle of the second air inlet 3291.

[0153] In this embodiment, the second outer oil mesh enclosure 329, which is set at the front and rear, is designed with a small tilt angle and short holes; the first outer oil mesh enclosure 328 has a larger tilt angle to the left and right and adopts a long hole design. This can meet the usage requirements of large air volume intake on both sides.

[0154] When cooking, oil fumes begin to be generated and rise to the rising zone. Because the two pots are placed side by side when cooking, the external oil mesh structure with large left and right air intakes in this embodiment can achieve a large amount of adsorption of oil fumes.

[0155] At the same time, multiple air intakes on the left and right sides can also avoid affecting the user's use due to multiple air intakes from the front and back. For example, if the fumes come in from the front and back, it will cause the user to be choked by the fumes.

[0156] In this embodiment, oblique holes are provided on the outer oil mesh panel to achieve air intake from all four sides (left, right, front, and back), resulting in a large air intake area.

[0157] Due to the function of the outer oil mesh diversion component 327, the generated oil fumes mainly diffuse to the two sides. The oil fumes are also mainly discharged outward through the first outer oil mesh enclosure 328 located on the left and right sides of the outer oil mesh diversion component 327. In this embodiment, for ease of description, the following focuses on the structural arrangement of the first oil guide path 3282 and the first outer oil mesh enclosure 328.

[0158] Preferably, in this embodiment, the first outer oil mesh enclosure 328 is inclined along the first direction and the second direction, the inclination angle of the first outer oil mesh enclosure 328 along the first direction is 12-15°, and the inclination angle of the first outer oil mesh enclosure 328 along the second direction is 15-17°.

[0159] In this embodiment, the first direction is the left-right direction, and the second direction is the front-back direction.

[0160] The angle at which the first outer oil mesh enclosure 328 is tilted along the first direction corresponds to the angle between the first outer oil mesh enclosure 328 in the left and right extension direction and the horizontal plane.

[0161] The tilt angle of the first outer oil mesh enclosure 328 along the second direction corresponds to the angle between the first outer oil mesh enclosure 328 in the front-to-back extension direction and the horizontal plane.

[0162] In this embodiment, by setting the first outer oil mesh enclosure 328 to be tilted forward and backward and tilted left and right, when oil droplets fall onto the first outer oil mesh enclosure 328, they can flow downward along the first outer oil mesh enclosure 328. At the same time, by reasonably setting the tilt angle, the oil droplets and the first outer oil mesh enclosure 328 can maintain a suitable friction force when flowing downward, so that they will not drip everywhere due to too fast a flow rate, nor will they fail to enter the oil tank 310 due to too slow a flow rate.

[0163] A first oil guide passage 3282 is formed between adjacent first air inlets 3281, and a second oil guide passage 3292 is formed between adjacent second air inlets 3291.

[0164] Specifically, this embodiment uses a single oil droplet as an example for analysis and explanation:

[0165] like Figure 1 As shown, when an oil droplet falls onto the first outer oil mesh enclosure 328, F1 is the component of the oil droplet's unit weight in the left-right tilting direction of the first outer oil mesh enclosure 328; F2 is the component of the oil droplet's unit weight in the front-back tilting direction of the first outer oil mesh enclosure 328; α is the left-right tilting angle of the first outer oil mesh enclosure 328 under normal installation conditions, preferably α is 13.6°; β is the front-back tilting angle of the first outer oil mesh enclosure 328 under normal installation conditions, preferably β is 16°.

[0166] F1=mg*sin13.6=0.235, F2=mg*sin16=0.276

[0167] When the optimal oil droplet flow direction is achieved, the force composition is: γ = arctan(F1 / F2) = 40.4°, where γ is the angle between the flow direction of the oil droplet on the first outer oil mesh enclosure 328 and the first side 3271.

[0168] The direction of the resultant force of the oil droplet in the first and second directions corresponds to the direction of the force on the oil droplet on the inclined surface of the first outer oil mesh 328. When the oil droplet is subjected to force, the direction of the force corresponds to the direction of the oil droplet flow. When the oil droplet falls, it will flow downward along the inclined surface of the first outer oil mesh 320 in the direction of the resultant force.

[0169] To ensure that the oil droplets flow down along the first oil guide path 3282, the resultant force on the oil droplets should be in the same direction as the first oil guide path 3282 during the setting process. That is, the oil path through which the oil droplets flow should be at the optimal oil path angle, ensuring that the collected oil droplets are smoothly guided.

[0170] In a specific setting, the angle between the center line of the first oil guide path 3282 and the first side 3271 is set to 40.4°, so that the direction of the resultant force of the oil droplet is the same as the angle between the first side 3271 and the oil droplet. This way, the oil droplet falling on the outer oil mesh 320 can flow down along the first oil guide path 3282.

[0171] To achieve safety protection, this embodiment also provides an outer oil mesh flange on the outer oil mesh enclosure, and an annular folding rib 325 is provided on the outer oil mesh flange. An annular oil guide groove 326 is formed between the annular folding rib 325, the outer oil mesh flange and the outer oil mesh enclosure. A folded protective edge that bends inward toward the annular oil guide groove 326 is formed on the top surface of the annular folding rib 325.

[0172] The inner oil mesh 330 is adapted to the shape of the outer oil mesh 320, and the inner oil mesh 330 includes:

[0173] The inner oil mesh diversion component 333 and the inner oil mesh enclosure 334 disposed around the inner oil mesh diversion component 333 have multiple mesh holes 335 evenly arranged on the inner oil mesh enclosure 334. The size of the mesh holes 335 is much smaller than the size of the first oblique elongated hole and the second oblique elongated hole, which can achieve a certain degree of shielding of oil droplets.

[0174] In this embodiment, the double-layer oil mesh structure can increase the air intake area and achieve a large air volume intake by using multiple first oblique elongated holes and multiple second oblique elongated holes on the first outer oil mesh enclosure 328 and the second outer oil mesh enclosure 329.

[0175] Meanwhile, the inner oil mesh 330 forms a mesh 335 plate structure with multiple mesh holes 335, which can block most of the oil droplets that are about to drip, thus preventing a large number of oil droplets from dripping directly onto the stove. In this embodiment, the inner oil mesh 330 with mesh holes 335 and the outer oil mesh 320 with oblique elongated holes work together to block most of the oil droplets while ensuring the air intake of the entire range hood, thus preventing too many oil droplets from dripping directly onto the stove.

[0176] Specifically, the inner oil mesh enclosure 334 in this embodiment also includes two oppositely arranged first inner oil mesh enclosures 3341 and two oppositely arranged second inner oil mesh enclosures 3342. The first inner oil mesh enclosures 3341 and the first outer oil mesh enclosure 328 are positioned correspondingly and adapted to their shapes. Multiple inclined first protrusions 3343 are provided on the outer side wall of the first inner oil mesh enclosure 3341. A first inner oil mesh guiding oil passage 3345 is formed between adjacent first inclined protrusions 3343. Oil flowing down along the inner oil mesh diversion component 333 or oil droplets directly condensed on the inner oil mesh 330 can flow down along the first inner oil mesh guiding oil passage 3345 to the outer oil mesh 320 and then enter the oil tank 310.

[0177] The first inclined protrusion 3343 forms the first inner oil mesh guide oil passage 3345, which can achieve a better guiding effect on the oil and prevent the oil on the inner oil mesh 330 from flowing around.

[0178] Multiple second inclined protrusions 3344 are provided on the outer wall of the second inner oil mesh enclosure 3342, and a second inner oil mesh guiding oil passage 3346 is formed between two adjacent second inclined protrusions 3344. The second inner oil mesh guiding oil passage 3346 can guide the oil.

[0179] Preferably, the centerline of the first inclined protrusion 3343 is adapted to the shape of the first air inlet 3281 and corresponds to the position of the first air inlet 3281, and the second inclined protrusion 3344 and the second air inlet 3291 are adapted to the shape and correspond to the position of the second air inlet 3291.

[0180] Specifically, in this embodiment, when the range hood is running, the oily fumes drawn in by the volute 220 assembly located inside the main box 200 are thrown into the volute 220 by the high-speed rotating impeller and accumulate inside the volute 220. This can cause oil accumulation inside the volute 220, which may directly drip through the oil filter onto the stovetop.

[0181] Similarly, the absorbed fumes will enter the main box 200 through the smoke guide channel between the connecting component 500 and the main box 200. Small oil droplets will inevitably adhere to the side wall of the main box 200. After the oil droplets accumulate, they may pass through the oil filter component 300 and drip onto the stovetop, affecting the user's use.

[0182] Meanwhile, when the range hood is working and adsorbing oil fumes, the adsorbed oil fumes will inevitably pass through the oil filter. The oil fumes that condense and accumulate in the oil filter and flow back are also one of the main sources of oil fumes generated by the range hood.

[0183] In order to guide the oil droplets on the top of the main tank 200, this embodiment provides a main tank oil guiding component 240, which is connected to the top wall 214 of the main tank and the volute 220, and is used to guide the oil on the top wall 214 of the main tank to the volute 220.

[0184] In a specific configuration, the main tank oil guiding component 240 includes:

[0185] The inclined guide arm 241 is connected and fixed to the top wall 214 of the main box. The inclined guide arm 241 can be fixed to the top wall 214 of the main box by screws. Its inclined setting can not only be used to receive oil droplets dripping from the top wall 214 of the main box, but also to guide the oil droplets.

[0186] The connecting arm 242 is connected to the inclined guide arm 241 and is set to fit against the end face of the volute 220.

[0187] Oil droplets dripping from the inclined guide arm 241 can be guided to the connecting arm 242 that fits the end face of the volute 220, and the guided oil droplets will drip downwards along the direction of the connecting arm 242.

[0188] The oil guiding component 230 of the volute is located below the volute 220 and is used to receive oil droplets dripping from the volute 220 opening and the oil guiding component of the main box 200.

[0189] Oil droplets dripping from the connecting arm 242 of the main tank oil guide component 240 will drip onto the volute oil guide component 230 and be collected by the volute oil guide component 230. At the same time, oil droplets in the mouth of the volute 220 are also collected into the volute oil guide component 230.

[0190] Specifically, the volute oil guiding component 230 and the volute 220 are fixedly connected, and an oil guiding groove 231 is formed inside the volute oil guiding component 231 that is inclined toward the second connecting member 520. The inclined arrangement of the oil guiding groove 231 can achieve a better guiding effect on the oil droplets.

[0191] The volute oil guide groove 231 has a volute oil inlet 232 and a volute oil outlet 233. A volute oil guide tongue is also provided at the volute oil outlet 233 to guide the oil towards the second connector 520.

[0192] The oil inlet 232 of the volute is located at the top of the oil guiding component 230 of the volute. Connecting arms 242 are provided on both sides of the oil inlet 232 of the volute. The connecting arms 242 are connected and fixed to the bottom of the volute 220. The length of the oil guiding component 230 of the volute extends beyond the outer contour of the volute 220 so that the oil droplets on the main oil guiding component 240 can fall into its interior.

[0193] The oil outlet 233 of the volute is located at the other end of the oil guide component 230 of the volute, and is used to discharge the oil in the oil guide component 230 of the volute. In order to guide the oil droplets, the oil guide tongue of the volute is inclinedly located at the oil outlet 233 of the volute and inclined towards the second connector 520. Preferably, the second guide part 522 of the second connector 520 is located below the oil guide tongue of the volute, so that the oil droplets dripping from the oil guide tongue of the volute can just drip onto the second connector 520 and be discharged downward by the second connector 520.

[0194] To guide the oil droplets on the side wall 211 of the first main tank and prevent them from falling onto the stovetop, this embodiment also includes:

[0195] The first oil guide 250 is disposed at the bottom end of the first main box side wall 211 and is used to collect oil droplets on the first main box side wall 211.

[0196] The oil-collecting and guiding part 251 extends from one end of the first main tank side wall 211 to the other end of the first main tank side wall 211, and can completely collect the oil droplets on the first main tank side wall 211, preventing the oil droplets on the first main tank side wall 211 from falling.

[0197] The second connector 520 is disposed near the end of the first oil guide 250 and can be used to receive oil droplets in the first oil guide 250.

[0198] Specifically, the first oil guide 250 includes:

[0199] The first connecting member 252 is connected to the first connecting piece 510. Preferably, in this configuration...

[0200] The first connector 510 is configured as a first connecting plate comprising a first connecting portion 511, a second connecting portion 512, a first guide portion 513, and a guide connecting portion 514, and is an integrally formed part. The first connecting member 252 is connected to the second connecting portion 512, which is folded outward relative to the main box 200.

[0201] The first connecting member 252 is preferably a first oil guide connecting plate, which is attached to the second connecting part 512 and fixedly connected by screws and the second connecting part 512.

[0202] The second connecting member 253 is connected to the first connecting member 252 and is inclined toward the inside of the main box 200. The second connecting member 253 is preferably a second oil guide connecting plate, which is connected to the first oil guide connecting plate.

[0203] The third connecting member 254 is inclined and connected to the second connecting member 253. The oil-bearing and oil-guiding part 251 is formed between the third connecting member 254 and the second connecting member 253. The third connecting member 254 is located on the inner side of the first main box side wall 211.

[0204] The second connecting member 253 is inclined, with part of it located outside the main box 200 and part located inside the main box 200. The third connecting member 254 is located inside the main box 200. This ensures that oil droplets dripping from the side wall 211 of the first main box will fall into the oil receiving and guiding part 251, thus achieving effective oil collection.

[0205] Preferably, the oil-bearing and guiding part 251 is an oil-bearing and guiding groove 310, which is inclined toward the second connecting member 520.

[0206] The third connecting member 254 is preferably a third oil guide connecting plate.

[0207] Furthermore, an oil guiding cavity with one side open is formed in the first oil guiding member 250, and the minimum inner diameter of the cross-section of the cavity 111 corresponding to the direction away from the second connector 520 and towards the second connector 520 gradually increases.

[0208] The internal space of the cavity 111 corresponding to the oil guiding cavity formed by the first oil guiding component 250 is larger as it gets closer to the second connecting component 520. This allows the oil droplets collected in the oil-collecting and guiding groove 310 to be quickly and smoothly guided into the second connecting component 520, thus achieving a rapid guiding effect.

[0209] To ensure that oil droplets on the side wall 213 of the third main tank can also be collected and prevented from dripping, this embodiment is designed such that the orthographic projection of the side wall 213 of the third main tank onto the bottom wall of the oil tank 310 lies within the area formed by the outline of the bottom wall of the oil tank 310. This guarantees that oil droplets dripping from the side wall 213 of the third main tank can drip directly into the oil tank 310 without overflowing.

[0210] To guide the oil droplets on the third main box side wall 213 located in front of the main box 200, this embodiment can be achieved by guiding them through the third connector 530 connected to the third main box side wall 213.

[0211] Of course, the third connector 530 structure can be omitted during setup, allowing the oil droplets to fall directly into the oil tank 310.

[0212] The second connector 520 can also be used to receive oil droplets discharged from the second main box side wall 212. It is located at the bottom of the second main box side wall 212 and can directly receive oil droplets dripping from the second main box side wall 212.

[0213] Oil droplets on the volute oil guide component 230, the first oil guide component 250, and the second main box side wall 212 mainly drip onto the second guide part 522, i.e. the second guide plate, and then continue to drip down along the wall of the second guide plate.

[0214] The oil filter assembly 300 is mounted on the smoke collection shell 110 and located below the main box 200;

[0215] A first oil inlet channel is formed between the inner oil mesh 330 and the outer oil mesh 320, and a second oil inlet channel connected to the oil trough 310 is formed between the outer oil mesh 320 and the oil trough 310.

[0216] The outer oil mesh 320 has an annular oil guide groove 326 around its perimeter. The first oil inlet channel is a first oil guide hole located on the inner oil mesh flange 331 and connected to the annular oil guide groove 326. The second oil inlet channel is a second oil guide hole located on the annular guide groove and connected to the oil groove 310.

[0217] Oil droplets entering the inner oil mesh 330 will be guided to both sides by the action of the inner oil mesh diversion component 333, and guided to the first inner oil mesh oil guide path 3345 or the second inner oil mesh oil guide path 3346 on the outer wall of the inner oil mesh. Finally, they will flow into the inner oil mesh flange 331 at the bottom of the inner oil mesh 330, and then enter the annular oil guide groove 326 around the outer oil mesh 320 through the first oil guide hole, and finally flow into the oil groove 310 through the second oil guide hole.

[0218] The oil droplets that fall onto the outer oil mesh 320 can be guided by the outer oil mesh diversion component 327 to the first oil guide path 3282 and the second oil guide path 3292, and finally fall into the annular oil guide groove 326 at the bottom of the outer oil mesh 320, and then enter the oil groove 310 through the second oil guide hole.

[0219] A first oil guiding channel is formed between the main tank oil guiding component 240, the volute oil guiding component 230, the second connector 520, and the oil mesh assembly 300. That is, the oil droplets collected at the top of the main tank 200 will pass through the main tank oil guiding component 240 and enter the volute oil guiding component 230. The oil droplets in the volute oil guiding component 230 will drip onto the second connector 520. Guided by the second connector 520, they will drip onto the inner oil mesh flange 331. Through the first oil guiding hole of the inner oil mesh flange 331, they will enter the annular oil guiding groove 326, and then through the second oil guiding hole, they will enter the oil groove 310, thus realizing the collection of oil droplets on the top wall 214 of the main tank.

[0220] Meanwhile, the oil droplets collected on the oil guide component 230 in the volute 220 are collected through the oil guide component 230, the second connector 520 and the oil mesh assembly 300.

[0221] A second oil guiding channel is formed between the first oil guiding component 250, the second connecting component 520, and the oil mesh assembly 300;

[0222] Oil droplets dripping from the side wall 211 of the first main tank are collected by the first oil guide 250 and then slide onto the second connector 520. They then enter the first oil guide hole of the inner oil mesh 330 and the second oil guide hole of the outer oil mesh 320, thus collecting the oil droplets on the side wall 211 of the first main tank.

[0223] Meanwhile, when the range hood is in operation, the fumes will pass through the oil filter assembly 300. Some of the fumes will condense on the oil filter assembly 300 after the range hood is turned off. Since both the outer oil filter 320 and the inner oil filter 330 in this embodiment are conical structures, the oil on the inner oil filter 330 will flow out downwards along the wall of the inner oil filter 330, and then enter the oil tank 310 through the first oil guide hole and the second oil guide hole.

[0224] Similarly, the oil collected on the outer oil mesh 320 will flow to the annular oil guide groove 326 of the outer oil mesh 320, and then enter the oil groove 310 through the second oil guide hole.

[0225] The oil droplets collected on the inner oil mesh 330 and the outer oil mesh 320 eventually all flow into the oil tank 310.

[0226] In this embodiment, the range hood uses a first oil guiding channel to collect oil from the top wall 214 of the main chamber and the volute 220, a second oil guiding channel to collect oil from the side wall 211 of the first main chamber, and a third oil guiding channel to collect oil from the external oil filter 320 and the internal oil filter 330. These multiple cooperating oil guiding channels effectively collect oil from components of the range hood where oil may accumulate, thus preventing oil dripping and improving the user experience.

[0227] Preferably, in this embodiment, the oil tank 310 is located below the fourth connecting part 523, and the orthographic projection of the fourth connecting part 523 on the bottom surface of the oil tank 310 is located within the area formed by the outline of the bottom surface of the oil tank 310. This ensures that all the oil collected and guided from the second connecting member 520 can flow into the oil tank 310 without oil leakage.

[0228] To achieve better oil guiding effect, in this embodiment, the second guide portion 522 and the third connecting portion 521 are arranged at an angle of 110-130 degrees.

[0229] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention 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 the present invention.

Claims

1. A range hood, characterized in that, Including: The main container includes: a first main container side wall located on both sides of the main container and a second main container side wall located on the rear side of the main container, and a first connector is provided at the bottom of the first main container side wall; A smoke collection shell is disposed below the main box and is fixedly connected to the main box; An oil trough is fitted onto the smoke collection shell; An external oil screen is located above the oil tank; An inner oil mesh is fixedly connected to the outer oil mesh, and a first oil inlet channel is formed between the inner oil mesh and the outer oil mesh, and a second oil inlet channel is formed between the outer oil mesh and the oil tank. The first oil guide element, connected to the first connector, includes: An oil-collecting and guiding part is used to collect and guide the oil flowing down the side wall of the first main tank. The oil-collecting and guiding part extends from one end of the side wall of the first main tank to the other end of the side wall of the first main tank. The second connector is connected to the bottom of the side wall of the second main box, near the end of the first oil guide, and is used to guide the oil in the oil-bearing and oil-guiding part into the oil tank through the first oil inlet channel and the second oil inlet channel. An oil guiding cavity with one side open is formed in the first oil guiding member, and the inner diameter of the oil guiding cavity gradually increases from the direction away from the second connecting member to the direction closer to the second connecting member.

2. The range hood according to claim 1, characterized in that, The first connector includes a first connecting part and a second connecting part. The first connecting part is connected to the side wall of the first main box, and the second connecting part is connected to the first oil guide.

3. The range hood according to claim 2, characterized in that, The first oil guide includes: First connecting member; The second connecting member is connected to the first connecting member and is inclined towards the inside of the main box; The third connecting member is inclined and connected to the second connecting member, forming the oil-bearing and oil-guiding part between them. The third connecting member is located on the inner side of the side wall of the first main tank.

4. The range hood according to claim 3, characterized in that, The oil-bearing and oil-guiding part is an oil-bearing and oil-guiding groove, which is inclined toward the second connecting member.

5. The range hood according to claim 4, characterized in that, The second connector includes: The third connecting part is used to connect and fix the second connecting piece and the side wall of the second main box; The second guide portion is connected to the first connecting portion and is inclined toward the oil tank side; The fourth connecting part is connected and fixed to the second guide part and the smoke collection shell.

6. The range hood according to claim 5, characterized in that, The oil tank is located below the fourth connecting part, and the orthographic projection of the fourth connecting part on the bottom surface of the oil tank is located within the area formed by the outline of the bottom surface of the oil tank.

7. The range hood according to claim 1, characterized in that, It also includes: a third main tank sidewall, which is positioned opposite to the second main tank sidewall, and the orthographic projection of the third main tank sidewall onto the bottom wall of the oil tank is located within the area formed by the outline of the bottom wall of the oil tank.

8. The range hood according to claim 5, characterized in that, The third connecting part is fitted to the side wall of the second main box and is locked and fixed to the side wall of the second main box by a locking member.

9. The range hood according to claim 5, characterized in that, The second guide portion and the third connecting portion have an included angle of 110-130 degrees.

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