Range hood

Abstract

Disclosed in the present application is a range hood. The range hood comprises: a housing, wherein the housing has an accommodating cavity formed therein; the housing comprises a smoke extraction panel, and the smoke extraction panel is provided with an air inlet in communication with the accommodating cavity; the distance between the smoke extraction panel and a cooktop surface gradually decreases in a direction from the rear end to the front end of the smoke extraction panel; and when the range hood is in a mounted state, the rear end of the smoke extraction panel is arranged close to a wall surface. In the range hood provided by the present application, the smoke extraction panel features an inverted configuration with a lower front and a higher rear. In this way, the pressure radiation direction of the range hood can be optimized, and the area of a negative-pressure zone can be increased, thus enhancing the smoke extraction effect.

Description

A type of range hood

[0001] This application claims priority to Chinese Patent Application No. 202510206552.6, filed on February 24, 2025, entitled "A Range Hood", the entire contents of which are incorporated herein by reference.

[0002] [Technical Field]

[0003] This application relates to the field of household appliance technology, and in particular to a range hood.

[0004] [Background Technology]

[0005] A range hood, also known as a kitchen exhaust hood, is a kitchen appliance used to purify the kitchen environment. Typically, household range hoods are installed above the kitchen stove. They quickly remove combustion waste and harmful fumes produced during cooking and vent them outdoors. Simultaneously, they condense and collect the fumes, reducing pollution, purifying the air, and providing safety features such as protection against toxic substances and explosions.

[0006] [Summary of the Invention]

[0007] This application provides a range hood that optimizes the pressure radiation direction, increases the negative pressure zone area, and improves smoke extraction.

[0008] One technical solution adopted in this application is: to provide a range hood, which includes: a housing, the housing having a accommodating cavity, the housing including a smoke extraction plate, the smoke extraction plate having an air inlet communicating with the accommodating cavity; wherein, the distance between the smoke extraction plate and the stove surface gradually decreases along the direction from the rear end to the front end of the smoke extraction plate, and the rear end of the smoke extraction plate is positioned close to the wall when the range hood is installed.

[0009] In some embodiments, the air inlet includes a first air inlet and a second air inlet spaced apart, with the first air inlet located on the side of the second air inlet near the rear end of the smoke plate.

[0010] In some embodiments, the area of ​​the first air inlet is larger than the area of ​​the second air inlet.

[0011] In some embodiments, the area of ​​the first air inlet and the area of ​​the second air inlet satisfy the following relationship: S1≥3S2, where S1 is the area of ​​the first air inlet and S2 is the area of ​​the second air inlet.

[0012] In some embodiments, the housing includes a back panel that is bent to the rear end of a smoke extraction plate, the smoke extraction plate and the back panel having an included angle β, wherein 60°≤β≤80°.

[0013] In some embodiments, the shape of the air inlet includes at least one of elongated, circular, or square shapes.

[0014] In some embodiments, the range hood includes an oil collection tank located at the front end of the smoke extraction plate for collecting oil droplets on the smoke extraction plate.

[0015] In some embodiments, the oil storage tank includes a first tank wall and a second tank wall connected to the first tank wall, wherein the first tank wall is disposed near the wall surface, the first tank wall is inclined, and the first tank wall has an included angle α with the smoke plate, wherein 90°≤α≤180°.

[0016] In some embodiments, the second groove wall of the range hood is vertically arranged in the installed state.

[0017] In some embodiments, the distance between the first groove wall and the air inlet is greater than or equal to 0 and less than or equal to 40 mm.

[0018] In the range hood provided by this application, the smoke extraction plate is inverted with the front lower and the back higher. This optimizes the pressure radiation direction of the range hood, increases the area of ​​the negative pressure zone, and improves the smoke extraction effect. Moreover, the range hood of this application has a simple structure, small size, and low cost.

[0019] [Attached Image Description]

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 is a structural schematic diagram of an embodiment of the range hood provided in this application;

[0022] Figure 2 is a side view of the range hood shown in Figure 1;

[0023] Figure 3 is a schematic diagram of the simulated airflow radiation structure of a range hood in the prior art;

[0024] Figure 4 is a schematic diagram of the simulated airflow radiation structure of the range hood provided in this application;

[0025] Figure 5 is a bottom view of the range hood shown in Figure 1;

[0026] Figure 6 is a structural schematic diagram of the range hood provided in this application in the installed state.

[0027] Figure descriptions: 10. Range hood; 11. Housing; 21. Fan; 111. Smoke extraction plate; 112. Back panel; 113. Top panel; 115. Front panel; 100. Air inlet; 101. First air inlet; 102. Second air inlet; 12. Oil collection tank; 121. First tank wall; 122. Second tank wall; 123. Bottom wall.

[0028]

Detailed Implementation Methods

[0029] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0030] The terms "first," "second," etc., used in this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such processes, methods, products, or apparatus.

[0031] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0032] A range hood is a kitchen appliance that purifies the kitchen environment. Installed above the stove, it quickly removes waste from combustion and harmful fumes produced during cooking, expelling them outdoors. It also condenses and collects these fumes, reducing pollution, purifying the air, and providing safety features such as protection against toxic substances and explosions.

[0033] The applicant found that the smoke extraction effect of a range hood is generally positively correlated with the smoke collection area of ​​the hood. In order to ensure the smoke extraction effect of the range hood, improvements are generally made in two aspects. One is to increase the thickness of the hood head to increase the smoke collection area, but this approach will take up front and back space and make it easy for users to bump their heads. The other is to reduce the thickness of the hood head and add an opening and closing smoke collection plate, but this method will increase costs.

[0034] This application proposes a novel range hood design. The range hood features an inverted trapezoidal structure, meaning that when installed, the angle between the suction surface and the wall is acute. This design increases the negative pressure zone area, improving suction efficiency. The range hood eliminates the need for a hinged panel, and the thickness of the hood head can be designed to be smaller, reducing its size and saving costs. Furthermore, the oil collection tank is positioned at the front for easy access and provides some flow guidance. The structure of the range hood provided in this application will be described in detail below.

[0035] Please refer to Figure 1, which is a structural schematic diagram of an embodiment of a range hood provided in this application. Specifically, the range hood 10 includes a housing 11 and a fan 21.

[0036] As shown in Figure 1, the housing 11 includes a smoke extraction panel 111, a back panel 112, a top panel 113, side panels (not shown), and a front panel 115. One end of the smoke extraction panel 111 is connected to the back panel 112, and the other end is connected to the front panel 115. One end of the top panel 113 is connected to the back panel 112, and the other end is connected to the front panel 115. The two ends of the smoke extraction panel 111, back panel 112, top panel 113, and front panel 115 are respectively connected to the side panels on both sides. The smoke extraction panel 111, back panel 112, top panel 113, side panels, and front panel 115 form a receiving cavity.

[0037] When the range hood 10 is installed, the back panel 112 is vertically positioned so that it can be flush against the wall, while the front panel 115 is positioned on the outside, close to the user. The front panel 115 can also be vertically positioned. After the range hood 10 is installed, the front panel 115, back panel 112, and side panels can all be stored in a cabinet, thus making the kitchen more tidy.

[0038] In some embodiments, as shown in FIG1, the smoke extraction plate 111 is provided with an air inlet 100 communicating with the accommodating cavity. The accommodating cavity is part of the air duct of the range hood 10, and a fan 21 is provided in the air duct. A check valve can be installed at the rear end of the fan 21 to connect to the rear exhaust pipe. When the range hood 10 is working, a negative pressure is generated at the air inlet 100 under the action of the fan 21 to draw the smoke out through the accommodating cavity. The configuration of the fan 21 is within the scope of what those skilled in the art can understand, and will not be described in detail here.

[0039] As shown in Figure 1, in this application, the distance between the smoke extraction plate 111 and the cooktop surface gradually decreases from the rear end to the front end of the smoke extraction plate 111. When the range hood 10 is installed, the rear end of the smoke extraction plate 111 is positioned close to the wall, and the front end is positioned close to the user. The cooktop surface is the surface on which the cooktop is installed, including the cooking area where smoke is generated during cooking. That is, unlike the prior art where the angle between the smoke extraction plate 111 and the wall is obtuse, in this application, the angle between the smoke extraction plate 111 and the wall is acute, and the angle between the smoke extraction plate 111 and the back panel 112 is also acute. In this configuration, the side view of the housing 11 is an inverted trapezoid, with the shorter side of the trapezoid close to the wall and the longer side located at the front end, close to the user.

[0040] An air inlet 100 is provided on the smoke extraction plate 111. Under the action of negative pressure, the smoke enters the air duct through the air inlet 100. In this application, the smoke extraction plate 111 is tilted in the opposite direction. In this way, the pressure radiation direction of the range hood 10 can be optimized and the area of ​​the negative pressure zone can be increased. When the smoke extraction plate 111 is tilted in the forward direction (the conventional structure in the prior art), the pressure radiation direction is as shown in Figure 3, and the negative pressure area is small. Therefore, in order to achieve the desired smoke extraction effect, the range hood needs to be designed to be larger and more expensive. When the smoke extraction plate 111 is tilted in the reverse direction (the solution of this application), the pressure radiation direction is as shown in Figure 4, and the negative pressure area is significantly increased. Therefore, the size of the range hood 10 can be designed to be smaller and the cost of the range hood can be reduced.

[0041] In the above embodiments, the smoke extraction plate 111 of the range hood 10 is inverted (lower in the front and higher in the back), which can optimize the negative pressure radiation direction of the range hood 10, increase the area of ​​the negative pressure zone, and improve the smoke extraction effect of the range hood 10. In addition, the range hood 10 provided in this application does not need to be equipped with a hinged plate, and the thickness of the head of the housing 11 can be designed to be smaller, thereby reducing the volume of the range hood 10 and saving manufacturing costs.

[0042] Optionally, the shape of the air inlet 100 includes at least one of elongated, circular, or square shapes. Preferably, the shape of the air inlet 100 can be elongated to allow oil droplets to flow along the air inlet mesh at the air inlet 100, facilitating the collection of oil droplets.

[0043] In some embodiments, the smoke extraction plate 111 can be provided with multiple air inlets 100 at different heights. For example, as shown in Figures 1 and 5, Figure 5 is a bottom view of the range hood shown in Figure 1. The air inlets 100 can include a first air inlet 101 and a second air inlet 102 arranged at intervals. The first air inlet 101 is located on the side of the second air inlet 102 near the rear end of the smoke extraction plate 111. That is, the first air inlet 101 is located near the wall, and the second air inlet 102 is located near the user side. The first air inlet 101 is located behind the second air inlet 102. By providing two air inlets 100, the air intake area of ​​the smoke can be increased, thereby improving the smoke extraction effect of the range hood 10.

[0044] Optionally, the number of first air inlets 101 and second air inlets 102 can correspond to the number of stoves. For example, when there are two stoves, two horizontally arranged first air inlets 101 and two horizontally arranged second air inlets 102 can be set to correspond to the two stoves respectively. In this way, the suction power can be more concentrated in the area of ​​the stove, improving the smoke extraction effect.

[0045] In some embodiments, the area of ​​the first air inlet 101 is larger than the area of ​​the second air inlet 102. That is, the first air inlet 101 is the main air inlet of the range hood 10, and the second air inlet 102 is the secondary air inlet of the range hood 10. Smoke mainly enters the range hood through the rear-side first air inlet 101. In this way, the smoke is dragged towards the wall, thus reducing the smoke at the front and moving it away from the user. Specifically, the function of the first air inlet 101 is to provide a backward dragging force to pull the smoke as far back as possible, closer to the wall. The second air inlet is an auxiliary air inlet, responsible for sucking away some of the smoke that is not dragged to the rear, reducing smoke overflow and improving the smoke extraction effect.

[0046] In this application, by setting two types of air inlets 100 (first air inlet 101 and second air inlet 102), the smoke can be dragged backward, reducing smoke overflow and allowing more smoke to be absorbed, thereby improving the smoke extraction effect of the range hood 10. It is understood that the smoke extraction plate 111 can also be provided with 3, 4, or other air inlets 100 at different heights, so that the smoke can enter the air duct through more air inlets 100.

[0047] In some embodiments, the area of ​​the first air inlet 101 and the area of ​​the second air inlet 102 satisfy the following relationship: S1 ≥ 3S2, where S1 is the area of ​​the first air inlet 101 and S2 is the area of ​​the second air inlet 102. That is, the area of ​​the first air inlet 101 is at least three times the area of ​​the second air inlet 102. This arrangement allows more smoke to be drawn back, and the remaining smoke enters the interior of the range hood 10 through the second air inlet 102, thus reducing smoke overflow and improving the smoke extraction effect of the range hood 10.

[0048] As shown in Figure 2, which is a side view of the range hood shown in Figure 1, the housing 11 includes a back panel 112. The back panel 112 is bent and connected to the rear end of the smoke extraction plate 111, as shown in Figure 2. An angle β exists between the smoke extraction plate 111 and the back panel 112, where 60°≤β≤80°. Specifically, the angle between the smoke extraction plate 111 and the back panel 112 can be 60 degrees, 65 degrees, 70 degrees, 75 degrees, or 80 degrees, etc. This arrangement allows for a larger negative pressure area formed by the range hood 10, improving the smoke extraction effect and facilitating the flow of oil droplets on the smoke extraction plate 111.

[0049] In some embodiments, as shown in FIG2, the range hood 10 may include an oil collection tank 12, which is located at the front end of the smoke extraction plate 111. The oil collection tank 12 is detachably connected to the front end of the smoke extraction plate 111 and is used to collect oil droplets on the smoke extraction plate 111. The oil collection tank 12 is located at the front end of the housing 11 for easy access by the user.

[0050] Optionally, the oil storage tank 12 and the housing 11 can be slidably connected. The oil storage tank 12 is located at the front end of the housing 11, allowing the user to pull it out from the front end of the housing 11. This connection method offers high reliability, ease of handling and installation, and low cost. In other embodiments, the oil storage tank 12 can be connected to the housing 11 via a snap-fit ​​connection. The user can adjust the snap-fit ​​to fix or remove the oil storage tank 12, providing convenient operation for the user.

[0051] Specifically, as shown in Figures 1 and 2, the oil storage tank 12 may include a first tank wall 121, a side wall (not shown), a bottom wall 123, and a second tank wall 122. One end of the bottom wall 123 is connected to the first tank wall 121, and the other end of the bottom wall 123 is connected to the second tank wall 122. The two ends of the first tank wall 121, the bottom wall 123, and the second tank wall 122 are respectively connected to the side walls on both sides. The first tank wall 121, the side wall, the bottom wall 123, and the second tank wall 122 form an oil storage cavity (not shown in the figures). The oil storage cavity is located at the front bottom of the smoke extraction plate 111 and is used to collect oil droplets dripping from inside the cavity. The first tank wall 121 is located close to the wall, and the second tank wall 122 is located at the front end of the range hood 10.

[0052] Optionally, the oil storage tank 12 may have a guide slope, which has a good guiding effect and can better deliver the flue gas to the air inlet 100. The guide slope of the oil storage tank 12 will be described in detail below.

[0053] In some embodiments, the first groove wall 121 is inclined, and its outer surface can serve as a guide slope for the flow of flue gas. As shown in Figure 2, there is an angle α between the first groove wall 121 and the smoke extraction plate 111, where 90°≤α≤180°. That is, the angle between the first groove wall 121 and the smoke extraction plate 111 can be 90 degrees, 100 degrees, 120 degrees, 130 degrees, 150 degrees, 160 degrees, or 180 degrees, etc.

[0054] As shown in Figures 1 and 6, in the installed state, the second wall 122 of the oil storage tank 12 is vertically arranged, and the outer edge of the second wall 122 is flush with the outer edge of the housing 11, so that the range hood 10 can be installed as a whole inside the cabinet. In other embodiments, one end of the second wall 122 of the oil storage tank 12 is connected to the housing 11, and the other end of the second wall 122 is inclined towards the side closer to the wall. In this way, more space is left on the outside, preventing the user from touching the oil storage tank 12 during operation.

[0055] In some embodiments, to ensure the airflow guiding effect, the distance between the first groove wall 121 and the air inlet 100 should be as small as possible, but this distance should be greater than 0 to avoid obstructing the air inlet 100. Specifically, the distance between the connection point of the first groove wall 121 and the smoke extraction plate 111 and the air inlet 100 is greater than or equal to 0 and less than or equal to 40mm. For example, the distance between the first groove wall 121 and the air inlet 100 (referring to the connection point of the first groove wall 121 and the smoke extraction plate 111) can be 10mm, 20mm, 30mm, or 40mm, etc. This arrangement enables the first groove wall 121 to have a better airflow guiding effect.

[0056] The distance between the bottom of the housing 11 (the end of the housing 11 closest to the stove surface) and the stove surface can be 750mm. As shown in Figure 6, the entire range hood 10 can be hidden inside the cabinet, with only the oil storage tank 12 remaining on the outside, so that users can easily disassemble the oil storage tank 12 to empty waste oil.

[0057] Alternatively, the oil storage tank 12 can be made into a lift-up type, so that the entire range hood 10 can be completely embedded in the cabinet to improve the cleanliness of the kitchen.

[0058] In summary, the range hood 10 provided in this application has a simple structure, low cost, and small size. Furthermore, by tilting the smoke extraction plate 111 in the opposite direction, the pressure radiation direction of the range hood can be optimized, the negative pressure zone area can be increased, and the smoke extraction effect can be improved. In addition, the oil collection tank 12 is located at the front end of the housing 11 for easy access by the user, and the oil collection tank 12 is equipped with a guide surface to guide the smoke to the air inlet 100, thereby further enhancing the smoke extraction effect of the range hood 10.

[0059] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A range hood, wherein, The range hood includes: The housing has a receiving cavity, and the housing includes a smoke extraction plate, which has an air inlet communicating with the receiving cavity; The distance between the smoke extraction plate and the stove surface gradually decreases from the rear end to the front end of the smoke extraction plate. When the range hood is installed, the rear end of the smoke extraction plate is positioned close to the wall.

2. The range hood according to claim 1, wherein, The air inlet includes a first air inlet and a second air inlet spaced apart, with the first air inlet located on the side of the second air inlet near the rear end of the smoke plate.

3. The range hood according to claim 2, wherein, The area of ​​the first air inlet is larger than the area of ​​the second air inlet.

4. The range hood according to claim 3, wherein, The area of ​​the first air inlet and the area of ​​the second air inlet satisfy the following relationship: S1≥3S2, where S1 is the area of ​​the first air inlet and S2 is the area of ​​the second air inlet.

5. The range hood according to any one of claims 1-4, wherein, The housing includes a back panel, which is bent and connected to the rear end of the smoking plate. The smoking plate and the back panel have an included angle β, wherein 60°≤β≤80°.

6. The range hood according to any one of claims 1-5, wherein, The shape of the air inlet includes at least one of the following: elongated, circular, or square.

7. The range hood according to any one of claims 1-6, wherein, The range hood includes an oil storage tank located at the front end of the smoke extraction plate, which is used to collect oil droplets on the smoke extraction plate.

8. The range hood according to claim 7, wherein, The oil storage tank includes a first tank wall and a second tank wall connected to the first tank wall. The first tank wall is located near the wall and is inclined. The first tank wall and the smoking plate have an included angle α, where 90°≤α≤180°.

9. The range hood according to claim 8, wherein, When the range hood is installed, the second groove wall is set vertically.

10. The range hood according to any one of claims 8-10, wherein, The distance between the first groove wall and the air inlet is greater than or equal to 0 and less than or equal to 40mm.

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