Range hood back panel and range hood

Abstract

The utility model relates to range hood technical field, more particularly, range hood backplate and range hood are related. The inner side surface of range hood backplate is equipped with the oil guide oil circuit, and the inner side surface of range hood backplate is divided into multiple oil collection surfaces by oil guide oil circuit. The oil liquid collected by each oil collection surface all flows to the oil guide oil circuit, and the oil liquid in the oil guide oil circuit flows to the range hood oil collection groove. The range hood backplate is applied to the range hood, which can collect oil liquid and guide it to the range hood oil collection groove, thereby reducing oil liquid dripping and dripping, and improving the overall cleanliness of the range hood, reducing the difficulty of cleaning and maintenance, and improving the user experience.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, and more specifically, to a range hood back panel and a range hood. Background Technology

[0002] Currently, oil leakage, dripping, and other oil problems in range hoods have long plagued users. This is because after the oil congeals on the back panel surface, it flows slowly under the influence of gravity, and its path is uncontrollable. It is easy for it to drip off the edge of the back panel, contaminating the stove and cabinets, and increasing the difficulty for users to clean and maintain the range hood. Utility Model Content

[0003] The purpose of this utility model is to provide a range hood back panel and range hood that can collect oil and guide it to the oil collection tank of the range hood, thereby reducing oil dripping and spillage, which helps to improve the overall cleanliness of the range hood, reduce the difficulty of cleaning and maintenance, and thus improve the user experience.

[0004] The embodiments of this utility model can be implemented as follows: In the first aspect, this utility model provides a range hood back panel, the inner side of which is provided with an oil guiding passage, which divides the inner side of the range hood back panel into multiple oil collecting surfaces. The oil collected at each oil collection surface flows into the oil guide path, and the oil in the oil guide path flows into the oil collection tank of the range hood.

[0005] In an optional embodiment, the oil guiding circuit includes an oil guiding channel and multiple oil collecting channels; Multiple oil collection channels are arranged at intervals along the height direction of the back panel of the range hood, and the bottom of each oil collection surface corresponds to at least one oil collection channel; the oil guide channel extends along the height direction of the back panel of the range hood and is connected to all the oil collection channels. The oil guide channel is connected to all the oil collection channels to collect the oil in multiple oil collection channels, and the oil in the oil guide channel flows to the oil collection tank of the range hood.

[0006] In an optional implementation, the oil collection channel bends or extends obliquely along the width direction of the back panel of the range hood.

[0007] In an optional embodiment, the oil collection channel includes an oil collection trough formed on the back panel of the range hood or an oil collection platform protruding from the back panel of the range hood.

[0008] In an optional embodiment, the oil collection channel includes an oil collection groove that extends and bends along the width direction of the back panel of the range hood, and the oil guiding channel includes an oil guiding groove formed on the back panel of the range hood, and the lowest point of each oil collection groove is connected to the oil guiding groove.

[0009] In an optional implementation, the depth of the oil collecting trough is greater than the depth of the oil guiding trough.

[0010] In an optional implementation, an arc-shaped transition surface is provided at the critical point between each oil collecting groove and the corresponding oil collecting surface.

[0011] In an optional embodiment, the bottom of the back panel of the range hood is provided with an oil collection channel communicating with the oil guide channel, and an oil outlet communicating with the oil collection channel. The oil outlet is used to guide the oil collected in the oil collection channel to the oil collection tank of the range hood.

[0012] In an optional embodiment, an oil outlet platform is provided at the bottom of the back panel of the range hood, and an oil outlet hole is opened on the oil outlet platform.

[0013] Secondly, this utility model provides a range hood, which includes a range hood body and the aforementioned range hood back plate; the range hood back plate is connected to the range hood body.

[0014] The beneficial effects of the range hood back panel and range hood provided in this embodiment of the invention include: The inner side of the range hood's back panel is equipped with oil guiding channels, which divide the inner side of the back panel into multiple oil collection surfaces. Oil collected on each surface flows through these channels to the oil collection trough. This back panel, when used in a range hood, effectively collects oil and directs it to the oil collection trough, reducing dripping and spillage. This improves the overall cleanliness of the range hood, reduces the difficulty of cleaning and maintenance, and ultimately enhances the user experience. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the range hood back panel provided in this embodiment; Figure 2 for Figure 1 A partial schematic diagram of point A in the middle.

[0017] Icons: 100 - Range hood back panel; 110 - Oil guide path; 120 - Oil collection surface; 111 - Oil guide channel; 112 - Oil collection channel; 113 - Oil collection groove; 114 - Oil guide groove; 115 - Arc-shaped transition surface; 116 - Oil confluence channel; 117 - Oil outlet hole; 118 - Oil outlet platform. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, 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, and therefore should not be construed as a limitation of this utility model.

[0022] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0023] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0024] When the range hood is running, its internal centrifugal fan starts, creating negative pressure in the air intake area. This allows most of the cooking fumes to be drawn in through the air intake and eventually exhausted outdoors through the duct. However, due to the diffusion of airflow, a small amount of fumes still comes into contact with the range hood's back panel 100, gradually adhering to and accumulating on its inner surface. Under the influence of gravity, these fumes flow slowly and uncontrollably, easily dripping from the edges of the back panel, forming oil drips. These accumulated oil stains eventually drip down the back panel onto the stove or wall, staining the stove and cabinets, affecting not only aesthetics but also increasing the cleaning burden.

[0025] For the reasons mentioned above, please refer to Figure 1This embodiment provides a range hood back panel 100, which can effectively reduce oil accumulation and dripping. Specifically, the inner side of the range hood back panel 100 is provided with an oil guiding passage 110, which divides the inner side of the range hood back panel 100 into multiple oil collecting surfaces 120. The oil collected at each oil collecting surface 120 flows into the oil guiding passage 110, and the oil in the oil guiding passage 110 flows into the oil collecting tank of the range hood.

[0026] Please refer to Figure 1 The working principle of the back panel 100 of the range hood is as follows: First, the inventors discovered through research that oil splashed onto the back panel eventually forms irregular drips on its inner wall. Due to the lack of an oil-guiding structure, the oil eventually drips down the lower edge of the back panel, causing cleaning problems for users. The range hood back panel 100 is used in a range hood, and the inner side of the range hood back panel 100 is equipped with an oil-guiding passage 110, which divides the inner side of the range hood back panel 100 into multiple oil-collecting surfaces 120. The oil collected on each oil-collecting surface 120 flows into the oil-guiding passage 110. The inner side of the range hood back panel 100 is the side that comes into contact with the flue gas inside the range hood. The oil guide passage 110 divides the inner side of the range hood back panel 100 into multiple oil collection surfaces 120 with reduced size. This arrangement reduces the size of each oil collection surface 120, which helps to reduce the accumulation and adhesion of oil. It also allows the accumulated oil to be quickly guided on the oil collection surface 120 to the oil guide passage 110. In this way, the oil can be quickly gathered on the range hood back panel 100, flow in the oil guide passage 110, and flow quickly towards the range hood oil collection tank under the guidance of the oil guide passage 110. Therefore, the range hood back panel 100 can collect oil and guide it to the range hood oil collection tank, thereby reducing oil dripping and spillage, which helps to improve the overall cleanliness of the range hood, reduce the difficulty of cleaning and maintenance, and thus improve the user experience.

[0027] Further, please refer to Figure 1 In this embodiment, when configuring the oil guiding passage 110, the oil guiding passage 110 includes an oil guiding channel 111 and a plurality of oil collecting channels 112. Multiple oil collection channels 112 are arranged sequentially at intervals along the height direction of the back panel 100 of the range hood, and the bottom of each oil collection surface 120 corresponds to at least one oil collection channel 112; the oil guide channel 111 extends along the height direction of the back panel 100 of the range hood and is connected to all the oil collection channels 112. The oil guide channel 111 is connected to all the oil collection channels 112 to collect the oil in the multiple oil collection channels 112, and the oil in the oil guide channel 111 flows to the oil collection tank of the range hood.

[0028] Therefore, through the above-described configuration, the inner surface of the range hood back panel 100 can be divided by the oil guide channel 111 and multiple oil collection channels 112, thereby forming multiple oil collection surfaces 120. Each oil collection surface 120 corresponds to one or more oil collection channels 112, which allows the oil on each oil collection surface 120 to flow quickly into its corresponding oil collection channel 112, thereby reducing the dripping of oil on the range hood back panel 100. Furthermore, since the oil guide channel 111 is connected to all the oil collection channels 112, the oil in the multiple oil collection channels 112 can be collected through the oil guide channel 111 and transported to the range hood oil collection tank.

[0029] It should be noted that in this embodiment, when configuring the oil collection channels 112, they are arranged at intervals along the height direction of the range hood back plate 100, and the bottom of each oil collection surface 120 corresponds to at least one oil collection channel 112. The purpose of this arrangement is that the oil on each wet oil collection surface 120 can flow into its corresponding oil collection channel under the action of gravity. On this basis, the oil guide channel 111 extends along the height direction of the range hood back plate 100, so it can connect with all the oil collection channels 112. When collecting oil, the oil can flow along the path of the oil guide channel 111, so as to quickly guide it into the oil collection tank 113 of the range hood.

[0030] It should also be noted that in this embodiment, the example is that multiple oil collecting channels 112 are arranged sequentially at intervals along the height direction of the back panel 100 of the range hood, and the oil guiding channels 111 extend along the height direction of the back panel 100 of the range hood. In other embodiments of this utility model, when configuring the oil guiding channels 111 and the oil collecting channels 112, their number can be adjusted so that they form a grid-like structure on the inner side of the back panel 100 of the range hood in an array.

[0031] Furthermore, based on the aforementioned structure, the oil collecting channel 112 serves to collect oil from the corresponding oil collecting surface 120. The oil collecting channel 112 can be bent along the width of the range hood back panel 100. This creates a height variation along the path of the oil collecting channel 112, allowing the oil to flow from high to low under gravity, thus acting as a guide. By connecting the guide channel 111 to the lowest point of the oil collecting channel 112, the oil can flow towards the oil collecting channel 112 under gravity and then flow along the guide channel 111, achieving rapid collection. In other embodiments of this invention, the oil collecting channel 112 can also extend obliquely along the width of the range hood back panel 100. The principle behind this is the same as the aforementioned bending extension, and therefore will not be repeated here.

[0032] Based on the above structure, when configuring the oil collecting channel 112, its function is to collect the oil on the corresponding oil collecting surface 120. Therefore, please refer to... Figure 1 and Figure 2 The oil collection channel 112 may include an oil collection trough 113 formed on the back plate 100 of the range hood or an oil collection platform protruding from the back plate 100 of the range hood. In this embodiment, the oil collection channel 112 is described as an oil collection trough 113.

[0033] Further, please refer to Figure 1 and Figure 2 Based on the above, this embodiment uses an oil collection channel 112 that includes an oil collection trough 113 that extends and bends along the width direction of the back panel 100 of the range hood. Correspondingly, an oil guiding channel 111 includes an oil guiding trough 114 formed in the back panel 100 of the range hood. The lowest point of each oil collection trough 113 is connected to the oil guiding trough 114. The purpose of this arrangement is to ensure that the oil in each oil collection trough 113 can flow from high to low under the action of gravity, thereby flowing into the oil guiding trough 114 to improve the efficiency of collection and guiding.

[0034] It should be noted that the flow of oil on the back panel 100 of the range hood satisfies the kinetic equations of viscous fluids:

[0035] in, For the density of the oil, Let t be the velocity vector field of the oil motion, and t be time. For pressure, The dynamic viscosity of the oil. This is a volumetric force (mainly gravity); while the volumetric flow rate of the oil film per unit width is... It can be represented as:

[0036] The maximum flow velocity of the oil film can be expressed as:

[0037] Where g is the acceleration due to gravity. This refers to the local thickness of the oil film. The angle between the oil flow surface and the horizontal plane ( ).

[0038] As can be seen from the above formula analysis, the oil film flow rate is affected by the oil film height. The higher the oil film height, the greater its flow velocity. However, the existing backplate lacks an oil guiding structure design, which prevents waste oil from being collected, resulting in limited oil film height, poor flowability, and inability to discharge waste oil in a timely and effective manner. Over time, this eventually leads to visible oil circuit problems. Based on this, this embodiment configures the oil collection channel 112 as an oil guiding groove 114 and the oil guiding channel 111 as an oil guiding groove 114. In this way, the oil can be initially collected in the oil collection groove 113. As the amount of oil in the oil collection groove 113 increases, the height of the oil increases, thereby increasing its flowability in the oil collection groove 113. The oil collection groove 113 is connected to the oil guiding groove 114, so that the oil in the oil collection groove 113 can be quickly introduced into the oil guiding groove 114.

[0039] Furthermore, when configuring the oil collection tank 113 and the oil guide tank 114, the depth of the oil collection tank 113 is greater than the depth of the oil guide tank 114. The purpose of this configuration is to reduce the flow of oil in the oil collection tank 113. Moreover, when configuring the guide tank, the guide tank extends along the height direction of the back plate 100 of the range hood. Therefore, after the oil enters the guide tank 114, it can flow downward quickly in the guide tank.

[0040] When the oil on the oil collecting surface 120 flows into its corresponding oil collecting groove 113, in order to improve the smoothness of the flow, an arc-shaped transition surface 115 is provided at the critical point between each oil collecting groove 113 and the corresponding oil collecting surface 120.

[0041] Further, please refer to Figure 1 and Figure 2Based on the above structure, in order to guide the oil on the back plate 100 of the range hood to the oil collection tank, an oil collecting channel 116 communicating with the oil guiding channel 111 and an oil outlet 117 communicating with the oil collecting channel 116 can be provided at the bottom of the back plate 100. The oil outlet 117 is used to guide the oil collected in the oil collecting channel 116 to the oil collection tank. That is, in this way, the oil collecting channel 116 is used for oil collection and temporary storage, and then the oil in the oil guiding channel 111 can be collected through the oil collecting channel 116 and guided to the oil collection tank through the oil outlet 117. It should be noted that when configuring the oil collection channel 116, it is placed at the bottom of the range hood back panel 100 and extends along the width direction of the range hood back panel 100. Moreover, the oil collection channel 112 in this embodiment is arranged in a curved manner. Therefore, the oil collection channel 116 located at the bottom of the range hood back panel 100 can also collect the oil on the inner side of the range hood back panel 100 above it. That is, it can prevent the oil from not entering the oil collection channel 112 or the oil from dripping from the bottom of the range hood back panel 100.

[0042] To facilitate the guidance of oil from the oil outlet 117 to the oil collection tank of the range hood, an oil outlet platform 118 is provided at the bottom of the range hood back plate 100, and the oil outlet 117 is opened on the oil outlet platform 118. With this arrangement, the oil can be directed to the oil collection tank of the range hood through the relatively protruding oil outlet platform 118.

[0043] Based on the above, please refer to Figure 1 and Figure 2 This embodiment also provides a range hood, which includes a range hood body and the aforementioned range hood back plate 100; the range hood back plate 100 is connected to the range hood body.

[0044] By adopting the aforementioned back plate 100, the range hood can collect oil through multiple oil collection tanks 113 during operation, and then guide the oil introduced by the multiple oil collection tanks 113 into the oil collection channel 116 through the oil guide channel 114, so that the oil flows to the range hood oil collection tank. This method allows for the collection of oil and its redirection to the oil collection tank of the range hood, thereby reducing oil dripping and spillage. This improves the overall cleanliness of the range hood, reduces the difficulty of cleaning and maintenance, and ultimately enhances the user experience.

[0045] In summary, in this embodiment, the height direction of the range hood back panel 100 is the vertical direction. The inner side of the range hood back panel 100 is provided with an oil guide groove 114, an oil collection channel 116, and multiple oil collection grooves 113. The multiple oil collection grooves 113 are spaced apart along the height direction of the range hood back panel 100, and the oil collection grooves 113 are curved and extended. The oil guide groove 114 is arranged along the height direction of the range hood back panel 100 and is connected to all the oil collection grooves 113. Its bottom end is connected to the oil collection channel 116. Thus, the oil on the oil collection surface 120 can be collected into each oil collection groove 113. After being collected in the oil collection grooves 113, it flows through the oil guide groove 114 to the oil collection channel 116, and then flows through the oil outlet 117 to the range hood oil collection groove.

[0046] Furthermore, the thickness of the range hood back panel 100 can be 8mm-12mm, the height of the range hood back panel 100 can be 400mm-600mm, the width of the oil collection groove 113 can be 18mm-30mm, the width of the oil guide groove 114 can be 18mm-30mm, the height of the oil confluence channel 116 can be 0mm-40mm, and the diameter of the oil outlet hole 117 is 2mm-6mm. When configuring the range hood back panel 100, since this embodiment uses the method of slotting the inner side of the range hood back panel 100 to form the oil guiding passage 110, in order to improve the structural strength of the range hood back panel 100, the range hood back panel 100 is thickened. In this embodiment, the thickness of the range hood back panel 100 is set to 10mm. Based on the thickness of the range hood back panel 100, when setting the oil collection groove 113 and the oil guide groove 114, since the groove depth of the oil guide groove 114 is greater than the groove depth of the oil collection groove 113, the groove depth of the oil collection groove 113 used in this embodiment is 7mm, and the groove depth of the oil guide groove 114 is 9mm, both of which are less than the thickness of the range hood back panel 100.

[0047] In addition, the height of the range hood back panel 100 is set to 450mm, the width of the oil collection groove 113 is set to 20mm, the width of the oil guide groove 114 is set to 20mm, the height of the oil confluence channel 116 is set to 30mm, and the diameter of the oil outlet hole 117 is set to 5mm. Therefore, the above-mentioned structural design facilitates the smooth flow and effective collection of oil in the oil guide path 110. During the operation of the range hood, oil fumes adhere to the oil collection surface 120. As the fumes accumulate, under the influence of gravity, the oil will gather in the oil collection trough 113, then be collected in the oil guide trough 114, and after being introduced into the oil collection channel 116, it will be collected and temporarily stored within the oil collection channel 116. When the oil level in the oil collection channel 116 exceeds 5mm, the oil will enter the oil collection trough 113 of the range hood through the oil outlet 117, and will ultimately be collected in the oil cup of the range hood.

[0048] As can be seen from the above, the maximum flow velocity of the oil is proportional to the square of the local oil film height. The multi-stage oil collection tank 113 design in this embodiment can significantly increase the local oil film height, greatly improving the oil collection speed and thus significantly enhancing the oil collection efficiency of the range hood back panel 100. Secondly, the hydrostatic pressure... It can be represented as:

[0049] In the oil collection tank 113, the effective aggregation of oil increases the thickness of the oil film, thereby increasing the static pressure head in the oil collection tank 113, forming an oil path for rapid oil discharge, and eliminating the randomness of oil flow on the original back plate.

[0050] Therefore, the range hood back panel 100 not only solves the problem of oil dripping and spilling of existing back panels, but also achieves the oil collection tank in the range hood back panel 100, thus realizing the oil circuit problem of the range hood back panel 100 without cleaning.

[0051] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A range hood back panel, characterized in that: The inner side of the range hood back panel is provided with an oil guiding channel, which divides the inner side of the range hood back panel into multiple oil collecting surfaces. The oil collected at each of the oil collecting surfaces flows to the oil guiding path, and the oil in the oil guiding path flows to the oil collecting tank of the range hood.

2. The back panel of the range hood according to claim 1, characterized in that: The oil guiding circuit includes an oil guiding channel and multiple oil collecting channels; Multiple oil collection channels are arranged sequentially at intervals along the height direction of the back panel of the range hood, and the bottom of each oil collection surface corresponds to at least one oil collection channel; the oil guide channel extends along the height direction of the back panel of the range hood and is connected to all the oil collection channels. The oil guide channel is connected to all the oil collection channels to collect oil from the multiple oil collection channels, and the oil in the oil guide channel flows to the oil collection tank of the range hood.

3. The back panel of the range hood according to claim 2, characterized in that: The oil collection channel bends or extends obliquely along the width direction of the back plate of the smoke machine.

4. The back panel of the range hood according to claim 3, characterized in that: The oil collection channel includes an oil collection trough formed on the back plate of the range hood or an oil collection platform protruding from the back plate of the range hood.

5. The back panel of the range hood according to claim 4, characterized in that: The oil collection channel includes an oil collection groove that extends and bends along the width direction of the back panel of the range hood, and the oil guiding channel includes an oil guiding groove formed on the back panel of the range hood, and the lowest point of each oil collection groove is connected to the oil guiding groove.

6. The back panel of the range hood according to claim 5, characterized in that: The depth of the oil collecting groove is greater than the depth of the oil guiding groove.

7. The back panel of the range hood according to claim 4, characterized in that: An arc-shaped transition surface is provided at the boundary between each oil collecting groove and the corresponding oil collecting surface.

8. The back panel of the range hood according to claim 6, characterized in that: The bottom of the back panel of the range hood is provided with an oil collection channel communicating with the oil guide channel, and an oil outlet communicating with the oil collection channel. The oil outlet is used to guide the oil collected in the oil collection channel to the oil collection tank of the range hood.

9. The back panel of the range hood according to claim 8, characterized in that: The bottom of the back panel of the range hood is provided with an oil outlet platform, and the oil outlet hole is opened on the oil outlet platform.

10. A range hood, characterized in that: The range hood includes a main body and a back panel as described in any one of claims 1-9; the back panel is connected to the main body.

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