A range hood

Abstract

The present application discloses a range hood. The range hood comprises a fume collection hood including a first fume extraction plate, the first fume extraction plate being provided with a plurality of front air inlets communicating with a receiving chamber and a plurality of rear air inlets communicating with the receiving chamber. The plurality of front air inlets are located in front of the first fume extraction plate, and the plurality of rear air inlets are located in rear of the first fume extraction plate. Among the plurality of front air inlets, the area of ​​the front air inlet located in the middle of the first fume extraction plate is larger than the area of ​​the front air inlets located at both ends of the first fume extraction plate, and / or, among the plurality of rear air inlets, the area of ​​the rear air inlet located in the middle of the first fume extraction plate is smaller than the area of ​​the rear air inlets located at both ends of the first fume extraction plate. At least one front air inlet is provided with a front guide vane, and / or at least one rear air inlet is provided with a rear guide vane. The range hood of the present application has a good extraction effect.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a range hood. Background Art

[0002] A range hood, also known as a cooker hood, is a kitchen appliance that purifies the kitchen environment. Typically, a household range hood is installed above the kitchen stove. It quickly extracts waste from the stove and harmful cooking fumes, exhausting them outdoors. It also condenses and collects the fumes, reducing pollution, purifying the air, and providing safety features like anti-toxicity and explosion protection.

[0003] The smoking effect of traditional European range hoods is generally positively correlated with the smoke-collecting area of ​​the machine body. In order to ensure the smoking effect, the thickness of the machine head is generally increased to enlarge the smoke-collecting area. However, this method will occupy the front and rear space and is easy to hit the head. Summary of the Invention

[0004] The present application provides a range hood that can improve the smoke extraction effect of the range hood by designing a flow channel of an air intake portion of the range hood.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide a range hood, the range hood includes: a smoke collection hood, the smoke collection hood is formed with a accommodating chamber, the smoke collection hood includes a first smoking plate, the first smoking plate is provided with a plurality of front air inlets communicated with the accommodating chamber and a plurality of rear air inlets communicated with the accommodating chamber, the plurality of front air inlets are located on the front side of the first smoking plate, and the plurality of rear air inlets are located on the rear side of the first smoking plate, wherein the front side of the first smoking plate is the side close to the user, and the rear side of the first smoking plate is away from the front side of the first smoking plate, and among the plurality of front air inlets, the front air inlet located in the middle position of the first smoking plate The area of ​​the rear air inlet is larger than the area of ​​the front air inlet located at both ends of the first smoking plate, and / or, among the plurality of rear air inlets, the area of ​​the rear air inlet located in the middle of the first smoking plate is smaller than the area of ​​the rear air inlets located at both ends of the first smoking plate; at least one front air inlet is provided with a leading guide vane, one end of each leading guide vane is connected to an end of the corresponding front air inlet away from the middle of the first smoking plate, and the other end of the leading guide vane extends toward the accommodating cavity; and / or, at least one rear air inlet is provided with a rear guide vane, one end of the rear guide vane is connected to an end of the rear air inlet away from the middle of the first smoking plate, and the other end of the rear guide vane extends toward the accommodating cavity.

[0006] In some specific embodiments, a plurality of front air inlets are arranged side by side along a first direction, and the areas of the plurality of front air inlets gradually decrease from the middle position of the first smoking plate to the two ends of the first smoking plate, and a plurality of rear air inlets are arranged side by side along the first direction, and the areas of the plurality of rear air inlets gradually increase from the middle position of the first smoking plate to the two ends of the first smoking plate, wherein the first direction is perpendicular to the spacing direction between the front side and the rear side of the first smoking plate.

[0007] In some specific embodiments, a line connecting ends of the plurality of front air inlets facing away from the rear air inlet is parallel to the first direction.

[0008] In some specific embodiments, a line connecting ends of the plurality of rear air inlets facing away from the front air inlet is parallel to the first direction.

[0009] In some specific embodiments, the plurality of front air inlets include a plurality of first front air inlets and a plurality of second front air inlets that are spaced apart, and the plurality of rear air inlets include a plurality of first rear air inlets and a plurality of second rear air inlets that are spaced apart.

[0010] In some specific embodiments, the angle between the leading guide vane and the plane where the front air inlet is located is α, where 45°≤α≤90°, and the angle between the trailing guide vane and the plane where the rear air inlet is located is β, where 45°≤β≤90°.

[0011] In some specific embodiments, the ratio of the area of ​​the orthographic projection of each leading guide vane on the plane where the corresponding front air inlet is located to the area of ​​the corresponding front air inlet is less than 0.5, and the ratio of the area of ​​the orthographic projection of each trailing guide vane on the plane where the corresponding rear air inlet is located to the area of ​​the corresponding rear air inlet is less than 0.5.

[0012] In some specific embodiments, the smoke collecting hood has a front side facing the user and a rear side opposite to the front side, and the distance between the first smoking plate and the stove top gradually increases from the front side to the rear side of the smoke collecting hood.

[0013] In some specific embodiments, the range hood further includes a second smoking plate, which is arranged side by side with the first smoking plate and spaced apart from each other, and the second smoking plate is arranged in the accommodating cavity. The second smoking plate is provided with a plurality of first internal air inlets connected to the accommodating cavity and a plurality of second internal air inlets connected to the accommodating cavity, the plurality of first internal air inlets are located on the front side of the second smoking plate, and the plurality of second internal air inlets are located on the rear side of the second smoking plate; the plurality of first internal air inlets are staggered with the plurality of front air inlets, and the plurality of second internal air inlets are staggered with the plurality of rear air inlets.

[0014] In some specific embodiments, the distance between the first smoking plate and the second smoking plate is d, wherein 12 mm≤d≤20 mm.

[0015] The beneficial effects of the present application are as follows: Different from the prior art, the range hood provided by the present application includes: a smoke collection hood, the smoke collection hood is formed with a accommodating chamber, the smoke collection hood includes a first smoking plate, the first smoking plate is provided with a plurality of front air inlets communicated with the accommodating chamber and a plurality of rear air inlets communicated with the accommodating chamber, the plurality of front air inlets are located on the front side of the first smoking plate, and the plurality of rear air inlets are located on the rear side of the first smoking plate, wherein the front side of the first smoking plate is the side close to the user, and the rear side of the first smoking plate is away from the front side of the first smoking plate, and among the plurality of front air inlets, the front air inlet located in the middle position of the first smoking plate has a larger area. The area of ​​the front air inlets at both ends of the first smoke-intake plate, and / or the area of ​​the rear air inlets located in the middle of the first smoke-intake plate, among the plurality of rear air inlets, is smaller than the area of ​​the rear air inlets located at both ends of the first smoke-intake plate. At least one front air inlet is provided with a front guide vane, one end of each front guide vane being connected to an end of the corresponding front air inlet away from the middle of the first smoke-intake plate, and the other end of the front guide vane extending into the accommodating cavity. And / or at least one rear air inlet is provided with a rear guide vane, one end of the rear guide vane being connected to an end of the rear air inlet away from the middle of the first smoke-intake plate, and the other end of the rear guide vane extending into the accommodating cavity. The range hood provided in the present application is provided with air inlets on both the front and rear sides of the first smoke-intake plate, thereby increasing the smoke intake area and improving the smoke-intake effect. Furthermore, when the front air inlet is larger in the middle and smaller on both sides, the airflow efficiency can be improved, allowing the front pressure to be shifted forward as much as possible, reducing smoke escaping from the front. When the rear air inlet is larger in the middle and smaller on both sides, the pressure can be distributed to the left and right sides to correspond to the position of the pot during cooking, directional pressure radiation and flow enhancement can be achieved on both sides, achieving a better extraction effect on both sides. In addition, the range hood of the present application can guide the smoke by providing front and / or rear guide vanes, directing the airflow into the air duct in a more orderly direction, thereby further improving the extraction effect of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a structural diagram of an embodiment of the range hood provided by the present application;

[0018] Figure 2 yes Figure 1 A schematic structural diagram of the range hood from another perspective is shown;

[0019] Figure 3 yes Figure 2 A schematic structural diagram of the first suction plate of a medium-sized range hood;

[0020] Figure 4 yes Figure 3 A schematic diagram of the enlarged structure at the center circle A;

[0021] Figure 5 yes Figure 1 FIG. 1 is a structural schematic diagram of an embodiment of an oil storage tank of a range hood. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It will be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some, rather than all, structures related to the present application are shown in the accompanying drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0023] The terms "first," "second," and the like in this application are used to distinguish between different objects, not to describe a particular order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0024] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0025] The purpose of designing a range hood is to collect the fumes generated by cooking and discharge them out of the kitchen. Its main working principle is: by exhausting the air in the kitchen, the fumes are driven to flow with the exhausted air, and then are collected and discharged out of the kitchen through the range hood.

[0026] This application proposes a new range hood configuration. The front of the range hood's smoke extraction panel is equipped with a front air inlet and a rear air inlet. The front air inlet is wide in the middle and narrow on both sides, allowing the front inlet pressure to be further forward, reducing smoke escaping from the front. The rear air inlet is narrow in the middle and wide on both sides, distributing the pressure to the left and right sides to correspond to the position of the pot during cooking. The range hood of this application has a good oil absorption effect. The structure of the range hood provided by this application is described in detail below.

[0027] See also Figure 1 As shown, Figure 1 1 is a schematic structural diagram of an embodiment of a range hood provided in the present application. Specifically, the range hood 10 includes a fume hood 100 and a fan 20 .

[0028] The smoke hood 100 is formed with a accommodating chamber 301. The smoke hood 100 may include a front panel 30, a back panel 50, and a side panel 40. One end of the side panel 40 is connected to the front panel 30, and the other end of the side panel 40 is connected to the back panel 50. The front panel 30, the back panel 50, and the side panel 40 are arranged to form the accommodating chamber 301. The accommodating chamber 301 is part of the air duct of the range hood 10. The air duct is provided with a fan 20. A check valve may be provided at the rear end of the fan 20 to connect to the rear exhaust pipe. Figure 2 As shown, Figure 2 yes Figure 1 The schematic structural diagram of the range hood from another perspective shows that the fume hood 100 further includes a first smoke extraction panel 101. The first smoke extraction panel 101 is provided with a plurality of front air inlets 11 communicating with the accommodating chamber 301 and a plurality of rear air inlets 12 communicating with the accommodating chamber 301. The plurality of front air inlets 11 are located on the front side of the first smoke extraction panel 101, and the plurality of rear air inlets 12 are located on the rear side of the first smoke extraction panel 101. The front side of the first smoke extraction panel 101 is positioned toward the user, while the rear side of the first smoke extraction panel 101 is positioned away from the user.

[0029] Under the action of the fan 20, negative pressure is generated at the front air inlet 11 and the rear air inlet 12 to draw the smoke out through the accommodating chamber 301. The configuration of the fan 20 is within the scope that can be understood by those skilled in the art and will not be elaborated on here.

[0030] The front air inlets 11 are located on the front side of the first smoke-intake plate 101, and the rear air inlets 12 are located on the rear side of the first smoke-intake plate 101. By providing two air inlets, both air inlets can be used to take in smoke, which can increase the ventilation area of ​​the range hood and improve the smoke-intake effect of the range hood 10.

[0031] exist Figure 2In the illustrated embodiment, among the several front air inlets 11, the area of ​​the front air inlets 11 located in the middle of the first smoke-inhaling plate 101 is larger than the area of ​​the front air inlets 11 located at both ends of the first smoke-inhaling plate 101. This improves airflow utilization efficiency, shifts the front inlet pressure further forward, reduces smoke escaping from the front, and minimizes the impact of smoke on users at the front. Among the several rear air inlets 12, the area of ​​the rear air inlet 12 located in the middle of the first smoke-inhaling plate 101 is smaller than the area of ​​the rear air inlet 12 located at both ends of the first smoke-inhaling plate 101. This distributes pressure to the left and right sides to correspond to the position of the pots during cooking, allowing smoke generated by the pots on both sides to be drawn in more quickly and improving the suction effect.

[0032] In the above embodiment, the front air inlet 11 of the range hood 10 is wide in the middle and narrow on both sides, while the rear air inlet 12 is narrow in the middle and wide on both sides. In this way, the smoke escaping from the front can be reduced, and the smoke generated by the pots on both sides can be absorbed more quickly, thereby improving the smoke extraction effect of the range hood 10.

[0033] It is understood that in some embodiments, the front air inlet 11 of the range hood 10 can be configured to be larger in the middle and smaller on both sides, while the rear air inlets 12 can be of equal size in the middle and at both ends to reduce the escape of smoke from the front. In other embodiments, the front air inlets 11 can be configured to be of equal size in the middle and at both ends, while the rear air inlets 12 can be larger in the middle and smaller on both sides to distribute pressure to the left and right sides corresponding to the position of the pot during cooking, thereby more quickly absorbing smoke generated by the pots on both sides.

[0034] like Figure 1 As shown, the smoke hood 100 has a front side facing the user and a rear side disposed opposite to the front side. Figure 1 As shown, the distance between the first extraction panel 101 and the cooktop gradually increases from the front to the rear of the fume hood 100. When the range hood 10 is installed, the rear side of the first extraction panel 101 is positioned closer to the wall, while the front side is positioned closer to the user. Unlike conventional range hoods, where the angle between the extraction panel and the wall is obtuse, the angle between the first extraction panel 101 and the wall in this application is acute.

[0035] Under the influence of negative pressure, smoke enters the air duct through the front air inlet 11 and the rear air inlet 12. In this application, the first extraction plate 101 is tilted in the opposite direction compared to conventional range hoods. This approach optimizes the pressure radiation direction of the range hood 10 and increases the area of ​​the negative pressure zone. When the extraction plate is tilted in the forward direction, the negative pressure zone is smaller. Therefore, to achieve the desired extraction effect, the range hood needs to be designed to be larger. When the first extraction plate 101 is tilted in the reverse direction, the negative pressure zone is larger, allowing the range hood 10 to be designed to be smaller.

[0036] In the above embodiment, the first smoke extraction plate 101 of the range hood 10 is inverted (lower in the front and higher in the back). This optimizes the direction of the negative pressure radiation from the range hood 10, thereby increasing the area of ​​the negative pressure zone and improving the smoke extraction efficiency of the range hood 10. Furthermore, this arrangement eliminates the need for an opening and closing plate, reducing the thickness of the smoke collection hood 100 and, consequently, the size of the range hood 10.

[0037] It is understood that in other embodiments, the first smoke extraction plate 101 may also be tilted in a positive direction, that is, the distance between the first smoke extraction plate 101 and the stove top gradually decreases from the front to the rear of the smoke collection hood 100. This approach also has a better smoke extraction effect.

[0038] Optionally, the plurality of front air inlets 11 are arranged side by side along a first direction X, which is perpendicular to the spacing between the front and rear sides of the fume hood 100. The area of ​​the plurality of front air inlets 11 gradually decreases from the middle of the first extraction plate 101 toward its ends. This allows for more efficient use of the space in front of the first extraction plate 101, increases pressure in the middle of the front, and reduces fume escaping from the front of the range hood.

[0039] Optionally, the plurality of rear air inlets 12 are arranged side by side along the first direction X, with the area of ​​the plurality of rear air inlets 12 gradually increasing from the middle of the first smoke-inhaling plate 101 toward both ends of the first smoke-inhaling plate 101. This allows for more efficient use of the space behind the first smoke-inhaling plate 101, distributing pressure to the left and right sides corresponding to the position of the pot during cooking, thereby improving the smoke-inhaling effect.

[0040] The line connecting the ends of the plurality of front air inlets 11 away from the rear air inlets 12 is parallel to the first direction X, and the line connecting the ends of the plurality of rear air inlets 12 away from the front air inlets 11 is parallel to the first direction X. In this way, the ends of the air inlets can better cooperate with the oil storage tank 200 to collect oil droplets, and the space of the first smoking plate 101 can be fully utilized to achieve a better smoking effect.

[0041] Preferably, the first smoking plate 101 has a centerline, which is parallel to the spacing direction between the front and rear sides of the smoke collecting hood 100. The front air inlets 11 are symmetrically arranged relative to the centerline of the first smoking plate 101, and the rear air inlets 12 are symmetrically arranged relative to the centerline of the first smoking plate 101. In this way, the front and rear air inlets on the left and right sides can be symmetrically arranged, ensuring uniform smoke distribution on both sides.

[0042] Specifically, if Figure 2 and Figure 3 As shown, Figure 3 yes Figure 2Schematic diagram of the first extraction panel of a mid-range range hood. The front air inlets 11 include spaced-apart first and second front air inlets 111 and 112, respectively. The rear air inlets 12 include spaced-apart first and second rear air inlets 121 and 122, respectively. The first and second front air inlets 111 and 112 are symmetrically arranged relative to the midline of the first extraction panel 101, while the first and second rear air inlets 121 and 122 are symmetrically arranged relative to the midline of the first extraction panel 101. This allows for four-zone smoke intake, front, back, and left, while also providing directional pressure radiation and enhanced flow on both sides, resulting in better smoke extraction.

[0043] Alternatively, as Figure 3 and Figure 4 As shown, Figure 4 yes Figure 3 The enlarged structural diagram at center circle A shows that at least some of the front air inlets 11 may be equipped with leading guide vanes 113. One end of the leading guide vane 113 is connected to the middle end of the corresponding front air inlet 11, away from the first smoking plate 101, and the other end of the leading guide vane 113 extends into the accommodating cavity 301. The leading guide vane 113 can be used to guide the smoke entering from the front air inlet 11.

[0044] The included angle between the front guide vane 113 and the plane where the corresponding front air inlet 11 is located is α, wherein 45°≤α≤90°. In this way, the ventilation area of ​​the front air inlet 11 can be guaranteed while having a guiding effect on the flue gas.

[0045] In some embodiments, the front guide vane 113 is rotatably disposed on one side of the corresponding front air inlet 11 to adjust the opening angle of the front guide vane 113. For example, when smoke is high, the angle between the front guide vane 113 and the plane containing the corresponding front air inlet 11 can be increased, while when smoke is low, the angle between the front guide vane 113 and the plane containing the corresponding front air inlet 11 can be decreased. In this way, the front guide vane 113 can adapt to various usage scenarios of the range hood 10.

[0046] A rear guide vane 123 is provided at at least one rear air inlet 12, one end of the rear guide vane 123 is connected to the end of the corresponding rear air inlet 12 away from the middle position of the first smoking plate 101, and the other end of the rear guide vane 123 extends toward the accommodating cavity 301. The rear guide vane 123 can be used to guide the smoke entering from the rear air inlet 12.

[0047] The angle between the rear guide vane 123 and the plane where the corresponding rear air inlet 12 is located is β, where 45°≤β≤90°. In this way, the ventilation area of ​​the front air inlet can be guaranteed while having a guiding effect on the flue gas.

[0048] The range hood 10 of the present application is capable of guiding the smoke by providing the front guide vanes 113 and the rear guide vanes 123 , and directing the airflow into the air duct in a more orderly direction, so as to further improve the smoke extraction effect of the range hood 10 .

[0049] In some embodiments, the rear guide vane 123 is rotatably disposed on one side of the rear air inlet 12, away from the center of the first inlet panel 101. The rear guide vane 123 can be used to adjust its opening angle. For example, when smoke is high, the angle between the rear guide vane 123 and the plane containing the rear air inlet 12 can be increased. When smoke is low, the angle between the rear guide vane 123 and the plane containing the rear air inlet 12 can be decreased. In this way, the rear guide vane 123 can adapt to various usage scenarios of the range hood 10.

[0050] Furthermore, the ratio of the area of ​​the orthographic projection of the front guide vane 113 on the plane where the corresponding front air inlet 11 is located to the area of ​​the front air inlet 11 is less than 0.5, and the ratio of the area of ​​the orthographic projection of the rear guide vane 123 on the plane where the corresponding rear air inlet 12 is located to the area of ​​the rear air inlet 12 is less than 0.5. This arrangement ensures the ventilation area of ​​the front air inlet 11 and the rear air inlet 12 while ensuring a certain pressure radiation and diversion effect.

[0051] Furthermore, if Figure 1 As shown, the range hood 10 may further include a second smoking plate 102, which is spaced apart and arranged side by side with the first smoking plate 101 and disposed in the accommodating cavity 301. The second smoking plate 102 is provided with an inner air inlet (not shown) communicating with the accommodating cavity.

[0052] By providing two layers of smoke extraction panels, the efficiency of smoke extraction and the rate of oil smoke extraction can be greatly improved. Specifically, by providing a double-layer smoke extraction panel, the range hood 10 can have a larger smoke collection range. The first smoke extraction panel 101 is closer to the cookware, allowing for initial interception and guidance of oil smoke as it is generated. The second smoke extraction panel 102 is positioned higher or further back, forming a wider "negative pressure zone" that can effectively cover a larger cooking area and prevent oil smoke from spreading and escaping in all directions during its rise. Moreover, the use of a double-layer smoke extraction panel can give the range hood 10 a stronger oil smoke guiding capability: the double-layer smoke extraction panel design can more effectively guide the oil smoke airflow to the core negative pressure area of ​​the air intake, improving suction and exhaust efficiency.

[0053] The internal air inlets include several first internal air inlets (not shown) communicating with the accommodating chamber 301 and several second internal air inlets (not shown). The first internal air inlets are located in front of the second smoking plate 102, while the second internal air inlets are located in the rear of the second smoking plate 102. The first internal air inlets are staggered with the front air inlets 11, while the second internal air inlets are staggered with the rear air inlets 12. In other words, the holes in the outer layer are blocked by the inner layer, and vice versa. This prevents oil droplets in the accommodating chamber 301 from dripping through the air inlets.

[0054] The distance between the first smoking plate 101 and the second smoking plate 102 is d, where 12 mm ≤ d ≤ 20 mm. The double-layer smoking plate structure can reduce the risk of oil dripping.

[0055] Furthermore, if Figure 1 As shown, the range hood 10 may further include an oil storage tank 200, which is provided at the front side of the first and second smoking plates 101, 102 for collecting oil droplets on the smoking plates. The oil storage tank 200 is provided at the front side for easy access by the user.

[0056] The entire range hood 10 can be hidden inside a cabinet, that is, the front panel 30, the side panel 40 and the back panel 50 of the range hood 10 are all hidden inside the cabinet, and only the oil storage tank 200 is retained on the outside to facilitate users to disassemble the oil storage tank 200 to pour out waste oil.

[0057] Optionally, the oil storage tank 200 can be made into a liftable type, and the entire range hood 10 (including the oil storage tank 200) can be completely embedded in the cabinet. When the oil storage tank 200 needs to be maintained, the oil storage tank 200 can be lowered to improve the cleanliness of the kitchen.

[0058] The oil storage tank 200 and the smoke hood 100 can be slidably connected, and the user can pull the oil storage tank 200 forward, backward or downward from the smoke hood 100. In other embodiments, the oil storage tank 200 can be connected to the smoke hood 100 by a buckle.

[0059] like Figure 5 As shown, Figure 5 yes Figure 1 The diagram shows a schematic diagram of an embodiment of an oil storage tank for a range hood. In some embodiments, the oil storage tank 200 may include a front tank wall 21, a rear tank wall 23, and a bottom wall 22. The front tank wall 21 is connected to the front end of the bottom wall 22, and the rear tank wall 23 is connected to the rear end of the bottom wall 22. The front tank wall 21, the bottom wall 22, and the rear tank wall 23 enclose an oil storage chamber 201.

[0060] In other embodiments, the oil storage tank 200 may not be provided with the bottom wall 22, and the oil storage tank 200 includes a front tank wall 21 and a rear tank wall 23 connected to the front tank wall 21. The front tank wall 21 and the rear tank wall 23 enclose an oil storage cavity 201.

[0061] Optionally, the distance between the rear wall 23 of the oil storage tank 200 and the stove top gradually increases from the front to the rear of the smoke hood 100, so that the rear wall 23 can serve as a guide surface to guide the smoke to the front air inlet 11. Preferably, the angle between the rear wall 23 and the horizontal plane can be less than or equal to 45 degrees.

[0062] In the present application, the outer surface of the rear side groove wall 23 of the oil storage tank 200 can be used as a guide surface to guide the smoke to the first smoking plate 101, so that the smoke enters the air duct through the front air inlet 11 and the rear air inlet 12 of the first smoking plate 101. The oil storage tank 200 cooperates with the smoke collection hood 100 to improve the smoking effect of the range hood 10.

[0063] The angle between the rear wall 23 and the horizontal plane is less than or equal to 45 degrees. The greater inclination of the rear wall 23 allows the negative pressure from the front air inlet 11 of the range hood 10 to be transferred to a greater depth, thereby improving the extraction efficiency. Because the air inlet at the same depth provides a deeper extraction efficiency, the depth of the oil storage chamber 201 can be greater than that of conventional designs, reducing the number of times the user needs to maintain the oil storage tank 200.

[0064] When the range hood 10 is installed, the front wall 21 of the oil storage tank 200 can be arranged vertically, and the bottom wall 22 can be arranged horizontally, so that the oil storage tank 200 can be accommodated in a cabinet.

[0065] Furthermore, since the rear wall 23 of the oil storage tank 200 has a large slope, the center of gravity of the oil storage tank 200 may be located outside the oil storage tank 200 when it is full. When the user places the oil storage tank 200 on a table, it is easy to tip over and the waste oil will overflow from the oil storage cavity. Figure 5 As shown, in some embodiments, the oil storage tank 200 may further include a support frame 24, which is connected to the rear side tank wall 23. In this way, the oil storage tank 200 naturally has a smaller tilt angle when placed so as not to cause the waste oil in the oil storage cavity 201 to overflow.

[0066] exist Figure 5 In the embodiment shown, the oil storage tank 200 includes two support frames 24, and the two support frames 24 are arranged at intervals on the rear side groove wall 23 of the oil storage tank 200 to make the force on the oil storage tank 200 more uniform. In other embodiments, the oil storage tank 200 may also include three support frames 24, etc., which can be determined according to the length of the oil storage tank 200.

[0067] exist Figure 5 In the illustrated embodiment, the support frame 24 is shaped like a triangular prism. Specifically, the support frame 24 includes a first side surface 241, a second side surface 242, and a third side surface 243. One end of the second side surface 242 is connected to one end of the first side surface 241, the other end of the second side surface 242 is connected to one end of the third side surface 243, and the other end of the third side surface 243 is connected to the other end of the first side surface 241. This configuration simplifies the structure of the support frame 24 and reduces its size. This reduces the impact of the support frame 24 on the diversion of the rear wall 23 of the oil storage tank 200 and provides stable support for the oil storage tank 200.

[0068] When the support frame 24 is in the supporting state, the second side surface 242 of the oil storage tank 200 can be flush with the bottom wall 22 of the oil storage tank 200. In this way, when the oil storage tank 200 is supported, the second side surface 242 and the bottom wall 22 of the oil storage tank 200 can contact the table at the same time, so that the oil storage tank 200 will not tilt when placed, and the waste oil can be prevented from overflowing.

[0069] In some embodiments, the support frame 24 and the rear wall 23 of the oil storage tank 200 can be fixedly connected, thereby reducing the number of assembly parts when installing the range hood 10.

[0070] In other embodiments, the support frame 24 and the oil storage tank 200 can also be detachably connected. For example, the rear side wall 23 of the oil storage tank 200 can only have a mounting groove (not shown), and one end of the support frame 24 can be detachably connected to the mounting groove. When the oil storage tank 200 is removed, the support frame 24 can be installed through the mounting groove. For example, one end of the support frame 24 can be connected to the mounting groove to support the oil storage tank 200. When the oil storage tank 200 is connected to the smoke hood 100, the support frame 24 can be removed from the mounting groove to avoid affecting the diversion function of the rear side wall 23.

[0071] In other embodiments, the support frame 24 can be rotatably connected to the rear side groove wall 23. For example, the support frame 24 can be connected to the rear side groove wall 23 of the oil storage tank 200 through a rotating shaft so that the support frame 24 has a supporting state and a closed state. In this way, the support frame 24 has a supporting function while not affecting the diversion function of the rear side groove wall 23 of the oil storage tank 200.

[0072] In some embodiments, when the support frame 24 is in the supporting position, the support frame 24 protrudes from the outer surface of the rear wall 23 of the oil storage tank 200 to support the oil storage tank 200 when the oil storage tank 200 is placed on a table. When the support frame 24 is in the closed position, the support frame 24 is flush with the outer surface of the rear wall 23 of the oil storage tank 200. This reduces protrusions on the rear wall 23 of the oil storage tank 200 and reduces the impact of the support frame 24 on the diversion function of the rear wall 23 of the oil storage tank 200.

[0073] In the above embodiment, a support frame 24 is provided on the oil storage tank 200 . The support frame 24 can support the oil storage tank 200 when the oil storage tank 200 is placed on a table, thereby preventing waste oil in the oil storage tank 200 from flowing out.

[0074] In summary, the range hood 10 provided in the present application has a simple structure and low cost. The front air inlet 11 is large in the middle and small on both sides, which can improve the utilization efficiency of the airflow, move the front pressure forward as much as possible, and reduce the escape of smoke on the front side; the rear air inlet 12 is large in the middle and small on both sides, which can distribute the pressure to the left and right sides to correspond to the position of the pots during cooking, and can perform directional pressure radiation and flow enhancement on the left and right sides to achieve a better smoking effect on both sides.

[0075] The above description is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A range hood, characterized in that: The range hood comprises: a fume collection hood, the fume collection hood forming a receiving cavity, the fume collection hood comprising a first smoking plate, the first smoking plate being provided with a plurality of front air inlets communicating with the receiving cavity and a plurality of rear air inlets communicating with the receiving cavity, the plurality of front air inlets being located on a front side of the first smoking plate, and the plurality of rear air inlets being located on a rear side of the first smoking plate, wherein the front side of the first smoking plate is a side closer to a user, and the rear side of the first smoking plate faces away from the front side of the first smoking plate; Among the plurality of front air inlets, the area of ​​the front air inlet located in the middle of the first smoking plate is larger than the area of ​​the front air inlets located at both ends of the first smoking plate; among the plurality of rear air inlets, the area of ​​the rear air inlet located in the middle of the first smoking plate is smaller than the area of ​​the rear air inlets located at both ends of the first smoking plate, the plurality of front air inlets are arranged side by side along a first direction, and the areas of the plurality of front air inlets gradually decrease from the middle of the first smoking plate to the two ends of the first smoking plate; the plurality of rear air inlets are arranged side by side along the first direction, and the areas of the plurality of rear air inlets gradually increase from the middle of the first smoking plate to the two ends of the first smoking plate; wherein the first direction is perpendicular to the spacing direction between the front side and the rear side of the first smoking plate; At least one of the front air inlets is provided with a leading guide vane, one end of each of the leading guide vanes is connected to one end of the corresponding front air inlet away from the middle position of the first smoking plate, and the other end of the leading guide vane extends toward the accommodating cavity; and / or, at least one of the rear air inlets is provided with a rear guide vane, one end of the rear guide vane is connected to one end of the rear air inlet away from the middle position of the first smoking plate, and the other end of the rear guide vane extends toward the accommodating cavity.

2. The range hood according to claim 1, characterized in that: A line connecting ends of the plurality of front air inlets facing away from the rear air inlet is parallel to the first direction.

3. The range hood according to claim 1, characterized in that: A line connecting ends of the plurality of rear air inlets facing away from the front air inlet is parallel to the first direction.

4. The range hood according to claim 1, characterized in that: The plurality of front air inlets include a plurality of first front air inlets and a plurality of second front air inlets that are spaced apart, and the plurality of rear air inlets include a plurality of first rear air inlets and a plurality of second rear air inlets that are spaced apart.

5. The range hood according to claim 1, characterized in that: The included angle between the leading guide vane and the plane where the front air inlet is located is α, wherein 45°≤α≤90°; The included angle between the rear guide vane and the plane where the rear air inlet is located is β, wherein 45°≤β≤90°.

6. The range hood according to claim 5, characterized in that: The ratio of the area of ​​the orthographic projection of each of the leading guide vanes on the plane where the corresponding front air inlet is located to the area of ​​the corresponding front air inlet is less than 0.5; The ratio of the area of ​​the orthographic projection of each rear guide vane on the plane where the corresponding rear air inlet is located to the area of ​​the corresponding rear air inlet is less than 0.

5.

7. The range hood according to claim 1, characterized in that: The smoke collecting hood has a front side facing a user and a rear side opposite to the front side. From the front side to the rear side of the smoke collecting hood, the distance between the first smoking plate and the stove top gradually increases.

8. The range hood according to claim 1, characterized in that: The range hood further comprises a second smoking plate, wherein the second smoking plate is arranged side by side with the first smoking plate and spaced apart; The second smoking plate is disposed in the accommodating cavity, and is provided with a plurality of first inner air inlets communicating with the accommodating cavity and a plurality of second inner air inlets communicating with the accommodating cavity, wherein the plurality of first inner air inlets are located at the front side of the second smoking plate, and the plurality of second inner air inlets are located at the rear side of the second smoking plate; The plurality of first inner air inlets are arranged alternately with the plurality of front air inlets, and the plurality of second inner air inlets are arranged alternately with the plurality of rear air inlets.

9. The range hood according to claim 8, characterized in that: The distance between the first smoking plate and the second smoking plate is d, wherein 12 mm ≤ d ≤ 20 mm.

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