Range hood with fan in the middle

Abstract

The utility model discloses a fan middle -positioned type range hood, including casing, main case and fan, form in the casing smoke collection cavity, and the casing includes top plate, oil guide plate, front side plate and back plate, and the front side plate includes first inclined surface part and is located in the recessed portion of the first inclined surface part slanting top and recessing inward, and the first inclined surface part forms the smoke inlet, and the main case is established on the top plate of casing, and the upper part of fan is located in the main case, and the lower part is located in the smoke collection cavity, the utility model discloses fan middle -positioned type range hood, and the front side plate includes first inclined surface part and is located in the recessed portion of the first inclined surface slanting top and recessing inward, and the recessed portion provides the avoidance space for the head of user, and effectively reduces the risk of head -to -head, and simultaneously, the recessed portion can also reduce the occupation of casing to space, is favorable to satisfy the installation requirement in small -sized kitchen.

Description

Technical Field

[0001] This utility model belongs to the field of kitchen appliance technology, specifically, it relates to an improved structure of a range hood with a centrally located fan. Background Technology

[0002] The main structure of a range hood includes a main box, a shell (also called a smoke hood), a fan, and an oil filter. The main box has a smoke exhaust port. The shell is located below the main box, and the main box is located on the top plate of the shell. A smoke collection chamber is formed inside the shell, which 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 installed on the smoke inlet of the shell.

[0003] Depending on the installation location of the fan, range hoods can generally be divided into three types: top-mounted, center-mounted, and bottom-mounted. A top-mounted fan is where the fan is entirely within the main housing; a bottom-mounted fan is where the fan is entirely within the smoke collection chamber; and a center-mounted fan has its upper part inside the main housing and its lower part inside the smoke collection chamber. Center-mounted and bottom-mounted range hoods are typically side-suction type, meaning the front panel of the housing is angled, and the fan is installed at a corresponding angle.

[0004] In related technologies, for range hoods with a centrally located fan, such as Figure 1 and Figure 2 Except for the top vertical plane 12, the front panel of the housing 10 is basically a single sloping section 11. The top edge of the sloping section connects to the bottom edge of the top vertical plane 12, and the bottom edge of the sloping section connects to the front edge of the bottom oil guide plate 13 of the housing. This results in a large volume of the housing 10, and the top area of ​​the sloping section 11 of the front panel of the housing often causes users to bump their heads. In addition, the large volume of the range hood housing makes it difficult to meet the installation requirements of small kitchens.

[0005] 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

[0006] This utility model proposes a centrally located fan-type range hood, which can solve the problems of large casing volume, risk of head bumping, and difficulty in installation in small kitchens in related technologies.

[0007] To address the aforementioned technical problems, in some embodiments of this application, a centrally located fan-type range hood is provided, comprising:

[0008] The housing has a smoke collection chamber inside. The housing includes a top plate, an oil guide plate, a front side plate, and a rear back plate. The front side plate includes a first inclined part and a recessed part located obliquely above the first inclined part and recessed inward. A smoke inlet is formed on the first inclined part.

[0009] The main box is located on the top plate of the shell, and a smoke exhaust port is formed on the top of the main box. The internal space of the main box is in communication with the smoke collection chamber.

[0010] The fan includes a duct casing and an impeller. The duct casing has an air inlet and an air outlet. The air inlet is connected to the smoke collection chamber, and the air outlet is connected to the smoke exhaust port. The fan is installed at an angle, with the same angle as the first inclined section. The upper part of the fan is located inside the main housing, and the lower part is located inside the smoke collection chamber.

[0011] In some embodiments of this application, the recess extends from the left end of the housing to its right end.

[0012] In some embodiments of this application, the recess is formed by a second inclined surface and a third inclined surface that intersect at an obtuse angle. The first inclined surface, the second inclined surface and the third inclined surface are arranged sequentially from bottom to top and have the same inclination direction. The inclination angle of the second inclined surface is greater than the inclination angle of the first inclined surface.

[0013] In some embodiments of this application, the tilt angle α of the second inclined surface ranges from 75° to 90°.

[0014] In some embodiments of this application, the centrally located fan range hood further includes a control panel, which is disposed on the second inclined surface and has the same tilt direction and angle as the second inclined surface.

[0015] In some embodiments of this application, the impeller shaft is located above the top plate of the housing.

[0016] In some embodiments of this application, the distance between the highest point of the upper part of the fan and the top plate of the housing is H1, and the distance between the lowest point of the lower part of the fan and the top plate of the housing is H2, where 1 < H1 / H2 < 2.

[0017] In some embodiments of this application, the value of H2 is in the range of 100mm < H2 < 200mm.

[0018] In some embodiments of this application, the bottom of the front side plate of the air duct volute is inclined, and the inclined direction is the same as that of the first inclined surface, and the inclined angle is greater than that of the first inclined surface.

[0019] In some embodiments of this application, the longitudinal depth D of the housing ranges from 300mm < D < 400mm, and the height H of the housing ranges from 200mm < H < 250mm.

[0020] In some embodiments of this application, an oil mesh assembly is installed on the smoke inlet. 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 are separated by a partition and connected as a whole.

[0021] Compared with the prior art, the centrally mounted fan range hood provided in this application no longer has a single sloping front panel, but rather a portion that is sloping, namely the first sloping section. The upper part of the first sloping section is a recessed area, and the smoke inlet is located on the first sloping section. The recessed area effectively reduces the corresponding part of the front panel of the casing, providing headroom for the user and reducing the risk of head bumps. At the same time, the recessed area also reduces the space occupied by the casing, which is beneficial for meeting the installation requirements of small kitchens.

[0022] 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

[0023] 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.

[0024] Figure 1 This is a structural diagram of a range hood with a centrally located fan in related technologies;

[0025] Figure 2 This is a partial structural diagram of a range hood with a centrally located fan in related technologies;

[0026] Figure 3 This is a perspective view of the front side of the centrally located fan range hood in this embodiment of the present invention;

[0027] Figure 4 This is a perspective view of the rear side of the centrally located fan range hood in this embodiment of the present invention;

[0028] Figure 5 This is a side view of the centrally located fan range hood in this embodiment of the present invention;

[0029] Figure 6 This is a side view of the centrally mounted fan range hood in this embodiment of the present invention, omitting the left side panel and the smoke collection chamber panel;

[0030] Figure 7 This is a front-view perspective view of the centrally mounted fan range hood in this embodiment of the present invention, omitting the control panel and flip panel;

[0031] Figure 8 This is a rear perspective view of the centrally mounted fan 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.

[0032] Figure 9 This is a three-dimensional view of the rear side of the centrally mounted fan range hood in this embodiment of the present invention, omitting the rear back panel of the housing, the rear back panel of the main box, and the fan.

[0033] Figure 10 This is a perspective view of the smoke collection chamber plate of the centrally located fan range hood in this utility model embodiment;

[0034] 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 centrally located fan range hood in this embodiment of the present utility model.

[0035] Figure 12 This is a perspective view of another angle showing the assembly structure of the smoke collection chamber plate, oil screen, oil guide plate and oil cup of the centrally located fan range hood in this utility model embodiment;

[0036] Figure 13 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 centrally located fan range hood in this utility model embodiment.

[0037] Figure 14 This is a perspective view of the front side of the oil filter assembly of the fan-centered range hood in this embodiment of the present invention;

[0038] Figure 15 This is a perspective view of the oil filter assembly of the fan-centered range hood in this embodiment of the present invention.

[0039] Figure 16 This is an exploded view of the oil filter assembly of the centrally located fan range hood in this embodiment of the present invention;

[0040] Figure 17 This is a schematic diagram of the oil baffle structure of the centrally located fan range hood in this embodiment of the present invention.

[0041] Figure 1 and Figure 2 Chinese figure labels:

[0042] 10. Shell; 11. Angled section; 12. Top vertical plane section; 13. Oil guide plate; 14. Top plate;

[0043] 20. Fan;

[0044] 30. Main box;

[0045] Figures 3 to 17 Chinese figure labels:

[0046] 100. Main box; 110. Smoke vent; 120. Through section; 130. Main box enclosure; 140. Oil baffle;

[0047] 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; 233. Recess; 234. Second inclined section; 235. Third inclined section; 240. Rear back plate;

[0048] 300. Oil mesh assembly; 310. First oil mesh; 320. Second oil mesh; 330. Partition plate; 331. Central oil guide groove;

[0049] 400, oil cup;

[0050] 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;

[0051] 600. Fan; 610. Duct volute; 611. Bottom of front side plate of duct volute; 620. Impeller; 630. Air inlet; 640. Air outlet;

[0052] 700. Control Panel;

[0053] 800, flip board. Detailed Implementation

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0059] Reference Figures 3 to 17 In some embodiments of this application, a centrally located fan 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.

[0060] The centrally located 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 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 drip 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.

[0061] The main housing 100 is located on the top plate 210 of the housing 200, above the housing 200.

[0062] The centrally located fan-type 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.

[0063] The centrally located fan-type 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 drip 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.

[0064] The centrally located fan-type 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.

[0065] The centrally mounted fan 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 smoke exhaust port 110. The fan 600 is installed at an angle, with the same inclination direction as the first inclined section 231. After the oil fume undergoes the first oil-fume separation by the oil mesh, 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 smoke exhaust port 110.

[0066] In some embodiments of this application, the upper part of the fan 600 is located inside the main box 100, and the lower part is located inside the smoke collection chamber, forming a fan-centered range hood.

[0067] In some embodiments of the application, the front side plate 230 of the housing 200 also includes a recessed portion 233 located obliquely above the first inclined portion 231 and recessed inward (i.e., on the side where the smoke collection chamber is located).

[0068] By setting the front panel 230 of the housing 200 to include a first inclined portion 231 and a recess 233 located obliquely above the first inclined portion 231, and setting the smoke inlet 232 on the first inclined portion 231, the side suction requirement is met; the recess 233 is equivalent to making the corresponding part of the front panel 230 of the housing 200 recessed, providing avoidance space for the user's head and effectively reducing the risk of head bumping. At the same time, the recess 233 can also reduce the space occupied by the housing 200, which is conducive to meeting the installation requirements of small kitchens.

[0069] In some embodiments of this application, such as Figures 3 to 9 As shown, the recessed portion 233 extends from the left end of the housing 200 to its right end, that is, its two ends penetrate through the left and right sides of the housing 200, further improving the avoidance effect.

[0070] In some embodiments of this application, such as Figure 5 As shown, the recessed portion 233 is surrounded by a second inclined portion 234 and a third inclined portion 235 that intersect at an obtuse angle. The first inclined portion 231, the second inclined portion 234 and the third inclined portion 235 are arranged sequentially from bottom to top and have the same inclination direction, so that the front side plate 230 of the housing 200 is stepped. The inclination angle of the second inclined portion 234 is greater than the inclination angle of the first inclined portion 231, that is, the inclination angle is larger. For example, it can be set to be close to perpendicular to the horizontal plane to improve the avoidance effect.

[0071] In some embodiments of this application, the tilt angle α of the second inclined surface 234 is in the range of 75° < α < 90°.

[0072] In some embodiments of this application, the centrally located fan range hood also includes a control panel 700, which is disposed on the second inclined surface 234 and has the same tilt direction and angle as the second inclined surface 234.

[0073] The control panel 700 can utilize an existing glass control panel to improve its appearance. The control panel 700 is mounted on the second inclined section 234, which has a large angle of inclination, nearly perpendicular to the horizontal plane, facilitating user operation.

[0074] In related technologies, refer to Figure 2 Most of the impeller shaft I of the fan 20 is located below the top plate 14 of the housing 10, with only a small portion at the rear end located above the top plate 14 of the housing 10. This results in the height ratio of the lower part of the fan 20 inside the housing 10 to the upper part inside the main box 30 along the height direction of the range hood being approximately 1:1. That is, about half of the outline of the fan 20 is located inside the housing 10, which also results in a large volume of the housing 10, with the front end often extending beyond the kitchen cabinet, increasing the risk of bumping one's head.

[0075] In some embodiments of this application, without increasing the volume of the housing 200, the recess 233 in the front panel 230 of the housing 200 reduces the internal space of the housing 200 and the smoke collection chamber space, which may affect the installation of internal components (such as the fan 600, which occupies the most space). To ensure the normal installation of the fan 600, in some embodiments of this application, such as... Figure 6 As shown, in this application, the entire shaft II of the impeller 620 is located above the top plate 210 of the housing 200. By configuring the fan 600 such that the entire shaft II of the impeller 620 is located above the top plate 210 of the housing 200, compared with existing related technologies, only a small portion of the lower outline of the fan 600 is located inside the housing 200, while the majority of its outline is located inside the main box 100. This is equivalent to lifting the fan 600, which also helps to reduce the volume of the housing 200. At this time, only the volume of the main box 100 needs to be increased accordingly to achieve smooth installation of the fan 600. When the range hood is installed, the main box 100 is hidden inside the kitchen cabinet and is not exposed. Its increased volume will not cause the user to bump their head, and it does not occupy the space between the stove and the kitchen cabinet.

[0076] In some embodiments of this application, such as Figure 6 As shown, the distance between the highest point of the upper part of the fan 600 and the top plate 210 of the casing 200 is H1, and the distance between the lowest point of the lower part of the fan 600 and the top plate 210 of the casing 200 is H2, where 1 < H1 / H2 < 2.

[0077] In some embodiments of this application, the value of H2 is in the range of 100mm < H2 < 200mm, so as to minimize the height of the lower part of the fan 600, thereby minimizing the height H of the housing 200.

[0078] In some embodiments of this application, the height H of the housing 200 ranges from 200mm < H < 250mm, whereas in existing related technologies, such as... Figure 1 and Figure 2 The range hood shown is typically no less than 300mm in height.

[0079] Since only a small portion of the lower outline of the fan 600 is located within the housing 200, and this portion of the fan 600 is relatively thin, the longitudinal depth D of the housing 200 can be reduced accordingly, ensuring it does not extend beyond the kitchen cabinet and further reducing the risk of head bumping. In some embodiments of this application, the longitudinal depth D of the housing 200 ranges from 300mm to 400mm.

[0080] To further reduce the space occupied by the lower part of the fan 600 within the housing 200, in some embodiments of this application, such as Figure 6 and Figure 17As shown, the bottom 611 of the front side plate of the air duct casing is a slope, which has the same inclination direction as the first slope 231, and its inclination angle is greater than that of the first slope 231. Therefore, compared to... Figure 2 In the related art shown, the fan 600 (the bottom of the front side plate 230 of its duct volute 610 is a plane perpendicular to the axis of the impeller 620) is a plane. In some embodiments of this application, the bottom 611 of the front side plate of the duct volute is set as an inclined surface. This part is equivalent to bending towards the side where the rear back plate 240 of the housing 200 is located, saving some space. This space can be used to avoid the installation of other components, making the structure more compact and more conducive to the installation of internal components of the small-volume housing 200.

[0081] In some embodiments of this application, the tilt angle β of the first inclined portion 231 is preferably 15°-30°, and the tilt angle γ of the bottom of the front side plate 611 of the air duct volute is preferably 30°-50°.

[0082] In some embodiments of this application, such as Figure 7 , Figure 9 , Figures 11 to 16 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.

[0083] 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.

[0084] To facilitate processing and ensure universal installation, the first oil mesh 310 and the second oil mesh 320 are completely identical.

[0085] In some embodiments of this application, the centrally located fan-type range hood further includes a flap assembly. The flap assembly includes a flap 800 and a flap drive mechanism. The flap drive mechanism is installed inside the housing and located outside the smoke collection chamber. The flap 800 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 800 to drive the flap 800 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.

[0086] Because the housing 200 is relatively small, the distance between the front panel 230 and the top panel 210 of the housing 200 may be smaller. As a result, the distance between the oil mesh assembly 300 and the top panel 210 of the housing 200 is small, and the distance between the oil mesh assembly 300 and the main box 100 is also small. After the first oil fume separation by the oil mesh assembly 300, some of the oil fume will directly reach the top panel 210 or the main box 100 of the housing 200 and 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 mesh assembly 300, resulting in a poor user experience.

[0087] 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.

[0088] In some embodiments of this application, such as Figures 8 to 13 As shown, the smoke collection chamber is formed by the smoke collection chamber plate 500 and the back plate 240 of the shell 200.

[0089] Taking the smoke inlet 232 of the housing 200 as a rectangular opening and the outer contour of the oil mesh assembly 300 as a corresponding rectangle, 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, the left sealing plate 520 and the right sealing plate 530 are located on the front, left and right sides of the through part 120, respectively. The bottoms of the front sealing plate 510, the left sealing plate 520 and the right sealing plate 530 are located on the outer sides of the front, left and right sides of the oil mesh assembly 300, respectively. The rear ends of the left sealing plate 520 and the right sealing plate 530 are both attached and fixed to the rear back plate 240 of the housing 200.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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 11 to 13 The arrows indicate the location of the top left guide oil groove 521 and the top right guide oil groove 531.

[0094] 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 9 As shown.

[0095] 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.

[0096] 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.

[0097] 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 12 and Figure 13 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.

[0098] In some embodiments of this application, the front sealing plate 510 includes a fourth 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 fourth 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 fourth 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 fourth inclined portion 512. Oil accumulated at the front of the main box 100 enclosure flows onto the fourth inclined portion 512 of the front sealing plate 510, and under the guiding action of the fourth inclined portion 512, it can flow smoothly and quickly to the bottom front guide oil groove 511, improving oil collection efficiency.

[0099] In some embodiments of this application, the same applies. Figures 11 to 13 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.

[0100] 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.

[0101] The partition 330 can be a sheet metal structure, formed by bending or stamping to create a central oil guide groove 331.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] In some embodiments of this application, such as Figure 17 As shown, an oil baffle 140 is provided on the bottom surface of the top plate of the main housing 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, with its inclination direction being the same as that of the first inclined section 231. The rear side of the oil baffle 140 is in contact with the air duct volute 610, so that a portion of the oil accumulated on the top plate of the main housing 100 can be guided along the oil baffle 140 to the surface of the air duct volute 610, and then flow into the oil cup 400 along the surface of the volute. The oil flow direction is as follows: Figure 17 As indicated by the arrows on the middle oil baffle 140 and the air duct housing 610, this reduces the occurrence of oil dripping from the top plate of the main box 100 onto the stove or into the pot.

[0106] 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 centrally located fan type range hood, characterized in that, include: The housing has a smoke collection chamber inside. The housing includes a top plate, an oil guide plate, a front side plate, and a rear back plate. The front side plate includes a first inclined part and a recessed part located obliquely above the first inclined part and recessed inward. A smoke inlet is formed on the first inclined part. The main box is located on the top plate of the shell, and a smoke exhaust port is formed on the top of the main box. The internal space of the main box is in communication with the smoke collection chamber. The fan includes a duct casing and an impeller. The duct casing has an air inlet and an air outlet. The air inlet is connected to the smoke collection chamber, and the air outlet is connected to the smoke exhaust port. The fan is installed at an angle, with the same angle as the first inclined section. The upper part of the fan is located inside the main housing, and the lower part is located inside the smoke collection chamber.

2. The centrally located fan-type range hood according to claim 1, characterized in that, The recessed portion extends from the left end of the housing to its right end.

3. The centrally located fan-type range hood according to claim 1 or 2, characterized in that, The recessed portion is surrounded by a second inclined portion and a third inclined portion that intersect at an obtuse angle. The first inclined portion, the second inclined portion and the third inclined portion are arranged sequentially from bottom to top and have the same inclination direction. The inclination angle of the second inclined portion is greater than the inclination angle of the first inclined portion.

4. The centrally located fan-type range hood according to claim 3, characterized in that, The range of the tilt angle α of the second inclined surface is: 75° < α < 90°; The centrally located fan range hood also includes a control panel, which is located on the second inclined surface and has the same tilt direction and angle as the second inclined surface.

5. The centrally located fan-type range hood according to claim 1, characterized in that, The impeller shaft is located above the top plate of the housing.

6. The centrally located fan-type range hood according to claim 5, characterized in that, The distance between the highest point of the upper part of the fan and the top plate of the casing is H1, and the distance between the lowest point of the lower part of the fan and the top plate of the casing is H2, where 1 < H1 / H2 < 2.

7. The centrally located fan-type range hood according to claim 6, characterized in that, The value range of H2 is: 100mm < H2 < 200mm.

8. The centrally located fan-type range hood according to claim 5, characterized in that, The bottom of the front side plate of the air duct volute is inclined, and its inclination direction is the same as that of the first inclined surface, but the inclination angle is greater than that of the first inclined surface.

9. The centrally located fan-type range hood according to claim 5, characterized in that, The longitudinal depth D of the shell ranges from 300mm to 400mm, and the height H of the shell ranges from 200mm to 250mm.

10. The centrally located fan-type range hood according to claim 5, characterized in that, An oil mesh assembly is installed on the smoke inlet. 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 are separated by a partition and connected as a whole.

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