A drainage structure and a range hood

Abstract

The utility model relates to the technical field of household appliances, and it discloses a drainage structure and a range hood, which comprise a shell, the top of the shell is provided with an air outlet, and the front end of the shell is provided with an air inlet; a glass panel is arranged at the front end of the shell; a plurality of peripheral drainage plates are arranged on the back side of the glass panel; a central drainage plate is arranged on the inner side of the peripheral drainage plates and is spliced with the peripheral drainage plates; two side drainage assemblies are arranged in the shell; each drainage assembly comprises at least one inclined surface for guiding the flow direction of oil fume to the air outlet; the plurality of peripheral drainage plates are arranged on the back side of the glass panel in an inclined manner, form a drainage system with the central drainage plate, and guide the flow direction of oil fume to the air outlet in cooperation with the two side drainage assemblies, so that the oil fume flows along a predetermined path, vortex and turbulent flow are avoided at the back of the glass panel, and the oil fume is efficiently discharged.

Description

Technical Field

[0001] This utility model relates to the field of household appliances, and in particular to a flow-guiding structure and a range hood. Background Technology

[0002] Traditional range hoods often experience backflow of cooking fumes and weakened suction power after prolonged use, primarily due to inefficient internal airflow organization. Specifically, the space between the outer casing and the glass panel of most current range hoods is not optimized, causing vortices and turbulence to form behind the glass panel after cooking fumes are drawn in. This chaotic airflow not only reduces the range hood's efficiency in capturing fumes but also allows some fumes to linger behind the glass panel, or even escape back into the kitchen, significantly impacting kitchen cleanliness and user experience. Utility Model Content

[0003] The technical problem to be solved by this utility model is to solve at least one of the technical problems mentioned above.

[0004] The solution to the technical problem of this utility model is: The first aspect of this utility model provides a drainage structure, including: The outer casing has an air outlet at the top and an air inlet at the front. A glass panel is disposed at the front end of the housing; Multiple peripheral drainage plates are provided, all of which are inclinedly arranged on the rear side of the glass panel; a central drainage plate is provided on the inner side of all the peripheral drainage plates and is spliced ​​with all the peripheral drainage plates. Two side-drainage assemblies are disposed within the housing; each side-drainage assembly includes at least one inclined surface for guiding the oil fumes toward the air outlet.

[0005] As some sub-solutions of the above technical solution, it also includes a first hinge; one end of the glass panel is hinged to the outer shell through the first hinge; the glass panel can rotate around the front end of the outer shell through the first hinge.

[0006] As some sub-solutions of the above technical solution, the side air diversion assembly includes a first connecting plate, a second connecting plate, and an inclined air diversion plate; the inclined air diversion plate is fixedly connected to the first connecting plate and the second connecting plate, the first connecting plate is fixedly connected to the inner side wall of the outer casing, the second connecting plate is fixedly connected to the inner top wall of the outer casing, and the inclined air diversion plate is fixedly connected to the inner rear wall of the outer casing; the inclined air diversion plate has an inclined surface that is inclined towards the air outlet; the inclination angle of the inclined surface is greater than the inclination angle of the peripheral air diversion plates.

[0007] As some sub-solutions of the above technical solution, the first connecting plate is connected to the inner side wall of the outer shell by screws, the second connecting plate is connected to the inner top wall of the outer shell by screws, and the inclined drainage plate is connected to the inner rear wall of the outer shell by screws.

[0008] As some sub-solutions of the above technical solution, it also includes an oil trough, an inclined plate, and a horizontal plate; the oil trough is disposed at the bottom of the outer casing; one end of the horizontal plate is connected to the inner wall of the outer casing, the other end of the horizontal plate extends horizontally toward the front end of the outer casing and is connected to one end of the inclined plate, the other end of the inclined plate is inclined toward the inner wall of the outer casing and is connected to the inner wall of the outer casing; the horizontal plate is located above the oil trough and at least partially covers the oil trough.

[0009] As some sub-solutions of the above technical solution, the horizontal plate and the inclined plate are integrally formed; the horizontal plate is connected to the inner wall of the outer shell by screws, and the inclined plate is connected to the inner wall of the outer shell by screws.

[0010] As some sub-solutions of the above technical solution, the horizontal plate has an oil leakage hole, the outer casing has an oil return hole, and the oil leakage hole and the oil return hole are connected by a pipe.

[0011] As some sub-solutions of the above technical solution, it also includes a grille, which covers the air outlet and is connected to the housing by screws.

[0012] As some sub-solutions of the above technical solution, the connection points of the multiple peripheral drainage plates are rounded.

[0013] The beneficial effects of the first aspect of this utility model are as follows: by designing multiple peripheral diversion plates that are inclinedly arranged on the back side of the glass panel and spliced ​​with the central diversion plate to form an integrated diversion system; this combination of inclined peripheral diversion plates and central diversion plates can guide the oil fumes to concentrate smoothly in the central area, avoiding the formation of eddies and turbulence behind the glass panel; at the same time, the two side diversion components inside the housing work together with the peripheral diversion plates and the central diversion plate to further guide the oil fumes to the air outlet through their inclined surfaces, ensuring that the oil fumes flow along a predetermined path, thereby significantly improving the oil fume capture efficiency, solving the problem of chaotic airflow inside traditional range hoods, and achieving efficient exhaust of oil fumes.

[0014] A second aspect of this utility model provides a range hood, including the airflow structure described in any of the preceding claims.

[0015] The range hood of the second aspect of this utility model, since it includes the airflow structure of the above-mentioned technical solution, also has corresponding beneficial effects. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the drainage structure of this utility model; Figure 2 This is a schematic diagram of the structure behind the glass panel; Figure 3 This is a schematic diagram of the side drainage component and the outer shell; Figure 4 This is a structural diagram of an inclined plate and a horizontal plate; Figure 5 This is a structural schematic diagram of the range hood of this utility model.

[0017] Reference numerals in the attached drawings: 1-outer shell, 11-grid, 12-oil return hole, 13-first hinge, 2-glass panel, 3-peripheral drainage plate, 4-central drainage plate, 5-side drainage assembly, 51-first connecting plate, 52-second connecting plate, 53-inclined drainage plate, 6-first hinge, 7-oil trough, 8-sloping plate, 9-horizontal plate, 91-oil leakage hole. Detailed Implementation

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments have been briefly explained above. Obviously, the described drawings are only a part of the embodiments of this utility model, not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0019] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0020] Reference Figures 1 to 5 The embodiments of this utility model are described below; The first aspect of this utility model provides a drainage structure, including: The outer casing 1 has an air outlet at its top and an air inlet at its front end. Glass panel 2, which is disposed at the front end of the outer casing 1; Multiple peripheral drainage plates 3 are inclinedly arranged on the rear side of the glass panel 2; a central drainage plate 4 is arranged inside all the peripheral drainage plates 3 and spliced ​​with all the peripheral drainage plates 3. Two side-drainage components 5 are disposed within the housing 1; each side-drainage component 5 includes at least one inclined surface for guiding the oil fumes to the air outlet.

[0021] In this embodiment, the outer shell 1 serves as the basic component of the air diversion structure, with an air outlet at the top and an air inlet at the front. The air outlet is connected to the exhaust system of the range hood to ensure that the fumes can be discharged smoothly. The air inlet is the main channel for the fumes to enter the range hood. The glass panel 2 is installed at the front end of the outer shell 1. Its main function is to cool the oil fume mixture, reduce the temperature, and cause the oil droplets to condense and fall into the oil tank 7 at the bottom of the outer shell 1. When the oil fume passes through the glass panel 2, the temperature drop causes the oil droplets to condense rapidly and flow along the glass panel 2 to the bottom oil tank 7 under the action of gravity. On the rear side of the glass panel 2, multiple peripheral guide plates 3 are arranged at an angle of approximately 40° to guide the remaining oily fumes after condensation towards the central area. This design is based on Bernoulli's principle, which states that when a fluid flows on an inclined surface, its pressure distribution changes, causing the fluid to accelerate along the surface. After the oily fumes condense on the glass panel 2, using fluid dynamics principles, the inclined peripheral guide plates 3 guide the lighter oily fumes along the surface of the peripheral guide plates 3 towards the central guide plate 4, forming a negative pressure zone and further promoting the absorption of oily fumes. The design incorporates a central airflow guide plate 4 located inside the peripheral airflow guide plates 3, tightly integrated with them to form a unified airflow system. The central airflow guide plate 4 is designed to further concentrate the fumes guided by the peripheral airflow guide plates 3 and direct them to the air outlet. The central airflow guide plate 4 is parallel to the glass panel 2, with a smooth surface to reduce airflow resistance and optimize airflow direction, ensuring smooth flow of fumes to the air outlet. Furthermore, the joint between the central airflow guide plate 4 and the peripheral airflow guide plates 3 features a rounded corner design to reduce airflow disturbance at the joint, minimize energy loss, and improve airflow efficiency. When the oil fume mixture enters the drainage structure, it first encounters the glass panel 2. The oil droplets in the oil fume condense due to the temperature drop and flow along the glass panel 2 to the bottom oil tank 7 under the action of gravity, achieving preliminary oil fume separation. After being cooled by the glass panel 2, the remaining oil fume gas enters the inclined channel formed by the peripheral drainage plates 3. According to Bernoulli's principle, the oil fume accelerates its flow on the inclined peripheral drainage plates 3, forming a negative pressure zone, which enhances the ability to draw in oil fumes. The peripheral drainage plates 3 guide the oil fume to the central drainage plate 4, and then further concentrate it to the air outlet, thereby achieving efficient oil fume drainage.

[0022] Specifically, it also includes a first hinge 13; one end of the glass panel 2 is hinged to the outer shell 1 through the first hinge 13; the glass panel 2 can rotate around the front end of the outer shell 1 through the first hinge 13.

[0023] In this embodiment, the rotation function of the glass panel 2 allows users to easily clean and maintain it. Users can rotate the glass panel 2 to easily access and clean the oil fume collection area on the back of the panel, thereby improving cleaning efficiency. The first hinge 13 can be a built-in adjustable damping angle hinge, such as the DTC Dongtai C82 series snap-on angle hinge (C82 series eccentric adjustment snap-on 135° angle hinge). The built-in adjustable damping angle hinge can fix the glass panel 2 connected to it at different angles. Therefore, users can adjust the tilt angle of the glass panel 2 according to the actual cooking situation to change the effective air intake area of ​​the air inlet. When a large amount of oil fume is generated during cooking, the angle of the glass panel 2 can be adjusted appropriately to increase the area of ​​the air inlet and improve the smoke extraction efficiency.

[0024] Specifically, the side airflow assembly 5 includes a first connecting plate 51, a second connecting plate 52, and an inclined airflow plate 53; the inclined airflow plate 53 is fixedly connected to the first connecting plate 51 and the second connecting plate 52, the first connecting plate 51 is fixedly connected to the inner side wall of the outer casing 1, the second connecting plate 52 is fixedly connected to the inner top wall of the outer casing 1, and the inclined airflow plate 53 is fixedly connected to the inner rear end wall of the outer casing 1; the inclined airflow plate 53 has an inclined surface that is inclined towards the air outlet; the inclination angle of the inclined surface is greater than the inclination angle of the peripheral airflow plate 3.

[0025] In this embodiment, the inclined guide plate 53 is designed with an inclined surface that tilts towards the air outlet. The tilt angle of this inclined surface is larger than that of the surrounding guide plate 3, thereby forming a gradually widening channel between the inclined guide plate 53 and the surrounding guide plate 3. Because the fluid velocity increases in the constricting channel and decreases in the expanding channel, the oil fume airflow slows down as it passes through the inclined guide plate 53 due to the gradual widening of the channel, which is conducive to the settling of oil fume particles and the separation of oil droplets. At the same time, the widened included angle design helps to form a more stable negative pressure zone, which can effectively capture and draw in more oil fumes and reduce the possibility of oil fume escape.

[0026] Specifically, the first connecting plate 51 is connected to the inner side wall of the outer casing 1 by screws, the second connecting plate 52 is connected to the inner top wall of the outer casing 1 by screws, and the inclined drainage plate 53 is connected to the inner rear end wall of the outer casing 1 by screws.

[0027] In this embodiment, the components are connected by screws. This connection method not only ensures the stability of the structure, but also facilitates disassembly and maintenance. Users or maintenance personnel can easily remove the side drainage component 5 for cleaning or replacement without complicated tools or steps, which improves the convenience and efficiency of maintenance.

[0028] Specifically, it also includes an oil trough 7, an inclined plate 8, and a horizontal plate 9; the oil trough 7 is disposed at the bottom of the outer casing 1; one end of the horizontal plate 9 is connected to the inner wall of the outer casing 1, the other end of the horizontal plate 9 extends horizontally toward the front end of the outer casing 1 and is connected to one end of the inclined plate 8, the other end of the inclined plate 8 is inclined toward the inner wall of the outer casing 1 and is connected to the inner wall of the outer casing 1; the horizontal plate 9 is located above the oil trough 7 and at least partially covers the oil trough 7.

[0029] In this embodiment, the oil tank 7 is located at the bottom of the outer casing 1. Its main function is to collect the oil droplets that condense and separate from the glass panel 2. The inclined design of the inclined plate 8 allows it to guide the oil fumes along its inclined surface into the channel between the glass panel 2 and the outer casing 1. At the same time, the inclined plate 8 is also used to slide the oil droplets separated from the glass panel 2 down its inclined surface into the oil tank 7. The structure composed of the inclined plate 8 and the horizontal plate 9 together blocks the air above the oil tank 7, preventing the oil droplets from dripping directly into the oil tank 7. Instead, they slide down along the inclined plate 8, further optimizing the collection and processing of the oil droplets.

[0030] Specifically, the horizontal plate 9 and the inclined plate 8 are integrally formed; the horizontal plate 9 is connected to the inner wall of the outer shell 1 by screws, and the inclined plate 8 is connected to the inner wall of the outer shell 1 by screws.

[0031] In this embodiment, the horizontal plate 9 is connected to the inner wall of the outer casing 1 by screws, and the inclined plate 8 is also connected to the inner wall of the outer casing 1 by screws. This connection method provides a solid fixation, while facilitating disassembly and maintenance, making cleaning and inspection more convenient. The screw connection also allows for easy replacement or repair of the horizontal plate 9 and the inclined plate 8 when needed, improving the maintainability of the entire drainage structure.

[0032] Specifically, the horizontal plate 9 has an oil leakage hole 91, and the outer casing 1 has an oil return hole 12. The oil leakage hole 91 and the oil return hole 12 are connected by a pipe.

[0033] In this embodiment, the horizontal plate 9 has an oil leakage hole 91 and the outer shell 1 has an oil return hole 12, which are connected by a pipe. The oil separated by the range hood is first injected into the oil return hole 12 through the external pipe, and then flows into the oil tank 7 through the pipe between the oil leakage hole 91 and the oil return hole 12, thereby reducing the accumulation of oil droplets inside the range hood.

[0034] Specifically, it also includes a grille 11, which covers the air outlet and is connected to the outer casing 1 by screws.

[0035] In this embodiment, the grille 11 covers the air outlet, and its main function is to prevent large particles of debris or grease from directly entering the exhaust system, thereby protecting the fan and extending the service life of the range hood. At the same time, the grille 11 allows airflow to pass smoothly, guiding the fumes to the air outlet with minimal resistance, ensuring exhaust efficiency. The grille 11 is connected to the outer casing 1 by screws, ensuring the stability of the grille 11 and facilitating installation and disassembly. The grille 11 is usually made of metal, such as stainless steel, which has good corrosion resistance and heat resistance, making it suitable for use in kitchen environments.

[0036] Specifically, the connection points of the plurality of peripheral drainage plates 3 are rounded.

[0037] In this embodiment, the rounded corner transition helps reduce airflow disturbance at the connection of the deflector plate, thereby reducing noise and improving smoke extraction efficiency. Sharp edges may cause airflow turbulence, while the rounded corner design can effectively avoid this situation. At the same time, because sharp corners are prone to accumulating grease and dirt, the rounded corner design makes it easier for maintenance personnel to wipe and clean these areas.

[0038] A second aspect of this utility model provides a range hood, including the airflow structure described in any of the preceding claims.

[0039] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A drainage structure, characterized in that, include: The outer casing has an air outlet at the top and an air inlet at the front. A glass panel is disposed at the front end of the housing; Multiple peripheral drainage plates are provided, all of which are inclinedly arranged on the rear side of the glass panel; a central drainage plate is provided on the inner side of all the peripheral drainage plates and is spliced ​​with all the peripheral drainage plates. Two side-drainage assemblies are disposed within the housing; each side-drainage assembly includes at least one inclined surface for guiding the oil fumes toward the air outlet.

2. The drainage structure according to claim 1, characterized in that: It also includes a first hinge; one end of the glass panel is hinged to the outer casing via the first hinge; the glass panel can rotate around the front end of the outer casing via the first hinge.

3. The drainage structure according to claim 1, characterized in that: The side airflow assembly includes a first connecting plate, a second connecting plate, and an inclined airflow plate; the inclined airflow plate is fixedly connected to the first connecting plate and the second connecting plate, the first connecting plate is fixedly connected to the inner side wall of the housing, the second connecting plate is fixedly connected to the inner top wall of the housing, and the inclined airflow plate is fixedly connected to the inner rear wall of the housing; the inclined airflow plate has an inclined surface that is inclined towards the air outlet; the inclination angle of the inclined surface is greater than the inclination angle of the peripheral airflow plates.

4. The drainage structure according to claim 3, characterized in that: The first connecting plate is connected to the inner side wall of the outer casing by screws, the second connecting plate is connected to the inner top wall of the outer casing by screws, and the inclined drainage plate is connected to the inner rear wall of the outer casing by screws.

5. The drainage structure according to claim 1, characterized in that: It also includes an oil trough, an inclined plate, and a horizontal plate; the oil trough is disposed at the bottom of the housing; one end of the horizontal plate is connected to the inner wall of the housing, the other end of the horizontal plate extends horizontally toward the front end of the housing and is connected to one end of the inclined plate, the other end of the inclined plate is inclined toward the inner wall of the housing and is connected to the inner wall of the housing; the horizontal plate is located above the oil trough and at least partially covers the oil trough.

6. The drainage structure according to claim 5, characterized in that: The horizontal plate and the inclined plate are integrally formed; the horizontal plate is connected to the inner wall of the outer shell by screws, and the inclined plate is connected to the inner wall of the outer shell by screws.

7. The drainage structure according to claim 5, characterized in that: The horizontal plate has an oil leakage hole, and the outer casing has an oil return hole. The oil leakage hole and the oil return hole are connected by a pipe.

8. The drainage structure according to claim 1, characterized in that: It also includes a grille that covers the air outlet and is connected to the housing by screws.

9. The drainage structure according to claim 1, characterized in that: The joints of the multiple peripheral drainage plates are rounded.

10. A range hood, characterized in that, Includes the drainage structure as described in any one of claims 1 to 9.

Images