Air duct structure and range hood

Abstract

The utility model relates to an air duct structure and a range hood, and relates to the technical field of range hoods. The utility model provides an air duct structure. The air duct structure comprises a volute and an oil guide part, an air duct is defined by the inner wall of the volute, the volute comprises an air duct ring, and an oil outlet is formed in the air duct ring and located in the bottom of the air duct ring; the oil guide part is arranged on the inner wall of the volute and extends towards the air duct along the inner wall of the volute. By arranging the oil guide part and the oil outlet, the oil guide part can collect oil stains in the air duct according to the oil way scheme of different oil guide routes in different areas, and guide the oil stains at all positions in the air duct to the oil outlet in the bottom of the air duct ring, so that the oil stains on the inner wall of the volute can be effectively guided to be discharged from the oil outlet; the deposition of oil dirt in the volute is reduced, the cleaning frequency of the air duct structure is reduced, and the service life of the range hood is prolonged.

Description

Technical Field

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

[0002] Range hoods are essential household appliances in modern kitchens, playing a vital role in purifying the cooking environment and creating a healthy and comfortable home environment. The performance of the range hood's ventilation system directly affects its smoke extraction efficiency and the quality of the kitchen environment.

[0003] Traditional range hoods typically consist of multiple components, including a fan impeller, a volute, ductwork, and an outlet connector. As cooking fumes rise, they enter the volute through the ductwork. With the high-speed rotation of the impeller, centrifugal force causes the oil mist to condense into droplets, which accumulate on the inner wall of the ductwork, forming grease that eventually collects in the grease cup.

[0004] If the oil passage is not smooth, a large amount of oil will accumulate on the inner wall of the air duct of the volute, which will affect the user experience, greatly increase the difficulty of cleaning, and also affect the performance of the range hood. Utility Model Content

[0005] The purpose of this utility model is to provide a duct structure and a range hood that can effectively guide the oil stains on the inner wall of the volute to be discharged from the oil outlet.

[0006] The embodiments of this utility model can be implemented as follows:

[0007] In a first aspect, this utility model provides a duct structure, including: a volute, the inner wall of which forms a duct, the volute including a duct ring, and an oil outlet on the duct ring, the oil outlet being located at the bottom of the duct ring;

[0008] The oil guide is located on the inner wall of the volute and extends along the inner wall of the volute towards the air duct.

[0009] In an optional embodiment, the volute also includes a volute front plate, which is detachably connected to the front side of the air duct ring.

[0010] The oil guiding part includes a first oil guiding part, which is disposed on the front edge of the air duct ring and extends along the air duct ring toward the air duct.

[0011] In an optional embodiment, the volute also includes a volute back plate, which is connected to the rear side of the air duct ring. The volute back plate is provided with a fan mounting part for installing a fan assembly, and the fan mounting part has an installation port inside.

[0012] The volute backplate and the air duct ring are integrally molded structures.

[0013] In an optional embodiment, the oil guiding part includes a second oil guiding part, which is disposed on the inner wall of the volute back plate and extends along the volute back plate toward the air duct, and the second oil guiding part is disposed along the inner ring of the fan mounting part.

[0014] In an optional implementation, the bottom of the air duct ring is sloped, and the oil outlet is located at the lowest point of the slope.

[0015] In an optional implementation, the slope is set at a first angle α with the horizontal line, and the range of the first angle α is: 3°≤α≤8°.

[0016] In an optional embodiment, the rear side of the air duct ring is higher than the front side of the air duct ring, so that the bottom of the air duct ring forms a slope, and the oil outlet is located near the front side of the air duct ring.

[0017] In an optional embodiment, the air duct structure further includes an oil guide bracket with an oil guide groove, the oil guide bracket being disposed below the volute, and the oil guide groove being connected to the oil outlet.

[0018] In an optional embodiment, the air duct structure is mounted on the main unit housing, the volute and the oil guide bracket are connected to the side wall of the main unit housing, and the oil guide groove is set at a second included angle β with the rear plate of the main unit housing, the range of the second included angle β being: 50°≤β≤70°.

[0019] Secondly, this utility model provides a range hood, including the air duct structure of any of the aforementioned embodiments.

[0020] The beneficial effects of the air duct structure and range hood provided in this embodiment of the utility model include:

[0021] By setting up an oil guide section and an oil outlet, the oil guide section can collect oil stains inside the duct according to different oil path schemes for different areas, and guide the oil stains from various locations inside the duct to the oil outlet located at the bottom of the duct ring. This setting can effectively guide the oil stains on the inner wall of the volute to be discharged from the oil outlet, reduce the deposition of oil stains in the volute, reduce the cleaning frequency of the duct structure, and extend the service life of the range hood. Attached Figure Description

[0022] 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.

[0023] Figure 1 This is a schematic diagram of the structure of the range hood provided in this embodiment;

[0024] Figure 2This is a schematic diagram of the air duct structure provided in this embodiment;

[0025] Figure 3 This is a schematic diagram of the air duct structure provided in this embodiment without the front plate of the volute.

[0026] Figure 4 This is a front view of the air duct structure provided in this embodiment;

[0027] Figure 5 This is a first cross-sectional view of the air duct structure provided in this embodiment;

[0028] Figure 6 This is a second cross-sectional view of the air duct structure provided in this embodiment.

[0029] Icons: 010-Range hood; 011-Duct structure; 012-Main unit box; 0121-Enclosure panel; 0122-Rear panel; 013-Smoke collection chamber; 0131-Oil cup; 0132-Smoke baffle; 014-Adapter; 100-Volume housing; 101-Air inlet; 102-Air outlet; 110-Duct ring; 111-Oil outlet; 112-Slope; 120-Volume housing front panel; 130-Volume housing back panel; 131-Fan mounting section; 132-Mounting port; 200-Oil guide section; 210-First oil guide section; 220-Second oil guide section; 300-Fan assembly; 400-Oil guide bracket; 410-Oil guide groove. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0035] 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.

[0036] The following describes in detail the overall structure, working principle, and technical effects of the air duct structure provided by this utility model through embodiments and in conjunction with the accompanying drawings.

[0037] Please refer to Figure 1 The air duct structure 011 provided by this utility model is applied inside the range hood 010.

[0038] Please refer to Figure 1 In this embodiment, the range hood 010 includes a duct structure 011, a main unit box 012, and a smoke collection chamber 013. The duct structure 011 is disposed inside the main unit box 012, and the main unit box 012 is disposed above the smoke collection chamber 013.

[0039] The main unit housing 012 includes a connecting panel 0121 and a rear panel 0122, and the air duct structure 011 is connected to the rear panel 0122 and located inside the main unit housing 012.

[0040] Optionally, a smoke baffle 0132 is provided on the front side of the smoke collection chamber 013, and an oil cup 0131 is provided on the rear side of the smoke collection chamber 013.

[0041] Understandably, as the fumes rise, they enter the main unit housing 012 through the fume collection chamber 013. As the impeller of the duct structure 011 rotates at high speed, under the action of centrifugal force, the fumes enter the volute 100 of the duct structure 011 through the main unit housing 012. The oil mist in the fumes condenses into oil droplets, which hit the inner wall of the volute 100 and accumulate to form oil stains. The oil stains then accumulate in the oil cup 0131 through the oil outlet 111 and the oil guide groove 410.

[0042] Please refer to Figure 1 and Figure 2This utility model provides a duct structure 011, including: a volute 100, the inner wall of the volute 100 forming a duct, the volute 100 including a duct ring 110, the duct ring 110 being provided with an oil outlet 111, the oil outlet 111 being located at the bottom of the duct ring 110.

[0043] An oil guiding part 200 is provided on the inner wall of the volute 100 and extends along the inner wall of the volute 100 toward the air duct.

[0044] Understandably, the fumes entering the duct are thrown onto various areas of the inner wall of the volute 100 by the centrifugal force of the fan assembly 300. The fumes thrown onto the inner wall of the volute 100 accumulate to form grease. By setting up the oil guide 200 and the oil outlet 111, the oil guide 200 can collect the grease inside the duct according to the oil path scheme of different areas and guide the grease from various locations inside the duct to the oil outlet 111 located at the bottom of the duct ring 110. This setting can effectively guide the grease on the inner wall of the volute 100 to be discharged from the oil outlet 111, reduce the deposition of grease in the volute 100, reduce the cleaning frequency of the duct structure 011, and extend the service life of the range hood 010.

[0045] In this embodiment, the air duct structure 011 includes a volute 100.

[0046] The inner wall of the volute 100 forms an air duct, and the volute 100 and the fan assembly 300 work together to discharge the oil fumes through the air duct.

[0047] In this embodiment, please refer to Figures 1-3 The volute 100 includes an air duct ring 110, a volute front plate 120, and a volute back plate 130. The volute front plate 120 is connected to the front side of the air duct ring 110, and the volute back plate 130 is connected to the rear side of the air duct ring 110. The connected air duct ring 110, volute front plate 120, and volute back plate 130 form an air duct. The air duct ring 110 is provided with an oil outlet 111, which is located at the bottom of the air duct ring 110.

[0048] Specifically, please refer to Figure 2 The volute 100 has an air inlet 101 and an air outlet 102. The air inlet 101 is located on the front plate 120 of the volute. The duct ring 110, the back plate 130 of the volute, and the front plate 120 of the volute are connected to form the air outlet 102. The air outlet 102 is located at the end of the duct and is used to exhaust oil fumes. A connector 014 is provided at the air outlet 102.

[0049] Specifically, please refer to Figure 1 and Figure 4The volute back plate 130 is provided with a fan mounting part 131, which is used to mount the fan assembly 300. The fan mounting part 131 has a mounting port 132 inside. The fan assembly 300 includes a motor and an impeller. The motor is mounted on the fan mounting part 131, and the output end of the motor is connected to the impeller to drive the motor to rotate the impeller at high speed and generate centrifugal force.

[0050] In one embodiment, please refer to Figure 3 , Figure 4 and Figure 6 The oil guiding section 200 includes a first oil guiding section 210, which is disposed on the front edge of the air duct ring 110 and extends along the air duct ring 110 into the air duct. It can be understood that the first oil guiding section 210 extends along the front edge of the air duct ring 110. The first oil guiding section 210 can prevent oil from flowing out from the front of the air duct ring 110 and the front plate 120 of the air duct ring 100, and can also guide the oil on the front plate 120 of the air duct ring 120 to flow along the inner wall of the front plate 120 of the air duct ring 110 to the oil outlet 111 at the bottom of the air duct ring 110.

[0051] In one embodiment, please refer to Figure 3 , Figure 4 and Figure 6 The oil guiding part 200 includes a second oil guiding part 220, which is disposed on the inner wall of the volute back plate 130 and extends along the volute back plate 130 toward the air duct, and the second oil guiding part 220 is disposed along the inner ring of the fan mounting part 131.

[0052] The side of the fan mounting section 131 facing the air duct is the inner side. Therefore, the arrangement of the second oil guide section 220 along the inner ring of the fan mounting section 131 can be understood as follows: the second oil guide section 220 is located on the side of the fan mounting section 131 facing the air duct, and the second oil guide section 220 surrounds the outermost ring of the fan mounting section 131.

[0053] Understandably, since the second oil guide part 220 is provided on the inner wall of the volute back plate 130 and extends along the inner ring of the fan mounting part 131 toward the air duct, the second oil guide part 220 can prevent the oil inside the volute 100 from flowing out from the mounting port 132 at the fan mounting part 131 on the rear side of the air duct ring 110, and can also guide the oil on the volute back plate 130 to flow along the inner wall of the volute back plate 130 to the oil outlet 111 at the bottom of the air duct ring 110.

[0054] Of course, in other embodiments, the oil guiding part 200 can be set at any position of the air duct ring 110, the front plate 120 of the volute and the back plate 130 of the volute according to the oil circuit scheme of different oil guiding routes in different areas, so that the oil guiding part 200 can guide the oil stains in various positions inside the volute 100 to the oil outlet 111 located at the bottom of the air duct ring 110.

[0055] In this embodiment, please refer to Figure 5 The bottom of the air duct ring 110 is sloped 112, and the oil outlet 111 is located at the lowest point of the slope 112. The rear side of the air duct ring 110 is higher than the front side of the air duct ring 110, so that the bottom of the air duct ring 110 forms a slope 112. The oil outlet 111 is located close to the front side of the air duct ring 110 and is located inside the first oil guiding part 210, so that oil can be guided to the oil outlet 111.

[0056] Optionally, the ramp 112 is set at a first angle α with the horizontal line. Considering the aerodynamic performance of the smoke machine, the range of the first angle α is: 3°≤α≤8°. The first angle α can be any one of 3°, 4°, 5°, 6°, 7°, and 8°.

[0057] It is understandable that by setting the bottom of the air duct ring 110 as an oil-guiding slope 112, the oil flowing from the rear plate 0122 of the volute 100 to the air duct ring 110 and the oil on the air duct ring 110 can be guided to the oil outlet 111 located on the front side.

[0058] It is worth mentioning that the current oil circuit of the air duct platform uses a unified oil circuit for oil guidance. The oil accumulated inside the volute 100 drips onto the oil collection box through the oil drain hole on the air duct ring 110. This method requires the addition of a separate oil box and multiple oil drain holes on the air duct ring 110 and the main unit housing 012, which makes the oil circuit less smooth, easily causing oil accumulation and making cleaning inconvenient.

[0059] Therefore, in this embodiment, please refer to Figures 1-4 The air duct structure 011 also includes an oil guide bracket 400 with an oil guide groove 410. The oil guide bracket 400 is located below the volute 100, and the oil guide groove 410 is connected to the oil outlet 111. The air duct structure 011 is located on the main unit housing 012, and the volute 100 and the oil guide bracket 400 are connected to the side wall of the main unit housing 012.

[0060] Among them, the volute 100 and oil guide bracket 400 of the air duct structure 011 are both connected to the rear plate 0122 of the main unit box 012.

[0061] Optionally, the oil guide groove 410 is set at a second included angle β with the rear plate 0122 of the main unit housing 012, and the range of the second included angle β is: 50°≤β≤70°. Among them, the second included angle β can be 50°, 55°, 60°, 65°, 70°, etc.

[0062] Understandably, oil enters the oil guide channel 410 from the oil outlet 111. The oil guide channel 410 guides the oil to the rear plate 0122, and then guides the oil to the oil cup 0131. This design of the oil guide channel 410 eliminates the need for a separate oil box. The oil passage in the oil guide channel 410 is unobstructed, preventing oil accumulation and ensuring that the oil is guided to the oil cup 0131 for easy cleaning.

[0063] It is worth mentioning that the connection between components such as the duct ring 110, the front plate 120 of the volute, and the back plate 130 of the volute may have poor sealing performance, and gaps are prone to appear at the connection points of these components. Firstly, this can easily lead to leakage of oil fumes and grease, increasing the amount of grease in the kitchen and making cleaning more difficult for users. Secondly, it also affects the smoke extraction efficiency and oil guiding effect, which may have an adverse impact on the air quality in the kitchen. Thirdly, due to the limitations of the connection method and structure of the above components, the airflow inside the duct is prone to turbulence and increased local resistance when passing through the connection points. This requires the fan assembly 300 to provide greater power to ensure the smoke extraction effect, thereby increasing the energy consumption and noise of the range hood 010. Fourthly, the installation of the above components requires precise positioning and connection operations, the installation process is cumbersome, and installation errors are prone to occur. Moreover, the compatibility and adaptability of different components may also have problems, reducing the production efficiency and quality stability of the product.

[0064] Therefore, in this embodiment, please refer to Figure 1 and Figure 2 The rear panel 0122, air duct ring 110, volute back plate 130, and oil guide bracket 400 of the main unit chassis 012 are integrally molded structures, which can be manufactured through an integral molding process. The rear panel 0122 is bolted to the enclosure plate 0121 of the main unit chassis 012, and the volute front plate 120 is detachably connected to the air duct ring 110. The air duct ring 110 has a smooth and continuous internal cavity.

[0065] Understandably, the integrated structure of the rear panel 0122, duct ring 110, volute back plate 130, and oil guide bracket 400 of the main unit 012 reduces oil leakage caused by gaps between components, thus improving the smoke extraction efficiency and oil guiding effect of the range hood 010. Simultaneously, the inner cavity shape of the duct ring 110 is designed and optimized according to the overall performance of the range hood 010. This design effectively reduces wind resistance and improves smoke extraction efficiency. The smooth and continuous internal cavity effectively avoids oil leakage caused by gaps between the aforementioned components, greatly improving the sealing performance of the duct structure 011, while also enhancing the oil guiding effect and reducing the impact of cooking fumes on the kitchen environment and user health.

[0066] The working principle and process of the air duct structure 011 provided in this embodiment of the utility model are as follows: Please refer to... Figure 3 , Figure 3 The straight arrows indicate the direction of oil flow. As the fumes rise, they enter the main unit housing 012 through the fume collection chamber 013. With the high-speed rotation of the impeller in the duct structure 011, under centrifugal force, the fumes pass through the main unit housing 012 into the volute 100 of the duct structure 011. The oil mist in the fumes condenses into oil droplets, which hit the inner wall of the volute 100 and accumulate to form oil stains. Specifically, the first oil guide section 210 guides the oil stains on the front plate 120 of the volute along the inner wall of the front plate 120 to the oil outlet 111 at the bottom of the duct ring 110. Similarly, the second oil guide section 220 guides the oil stains on the back plate 130 of the volute along the inner wall of the back plate 130 to the oil outlet 111 at the bottom of the duct ring 110.

[0067] Furthermore, the oil enters the oil guide groove 410 from the oil outlet 111. The oil guide groove 410 guides the oil to the rear plate 0122 and then guides the oil to the oil cup 0131 through the rear plate 0122.

[0068] In summary, the duct structure 011 provided in this embodiment of the present invention, by setting an oil guiding part 200 and an oil outlet 111, allows the oil guiding part 200 to collect oil stains inside the duct according to different oil guiding routes in different areas, and guides the oil stains in various positions inside the duct to the oil outlet 111 located at the bottom of the duct ring 110. This setting can effectively guide the oil stains on the inner wall of the volute 100 to be discharged from the oil outlet 111, reduce the deposition of oil stains in the volute 100, reduce the cleaning frequency of the duct structure 011, and extend the service life of the range hood 010.

[0069] 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 duct structure, characterized in that, The application relates to a wind channel structure (011), which comprises: a volute (100), an inner wall of the volute (100) surrounding a wind channel, the volute (100) comprising a wind channel ring (110), the wind channel ring (110) being provided with an oil outlet (111), the oil outlet (111) being located at the bottom of the wind channel ring (110); an oil guide part (200) arranged on the inner wall of the volute (100), the oil guide part (200) extending along the inner wall of the volute (100) to the wind channel.

2. The air duct structure according to claim 1, wherein The volute (100) further comprises a volute front plate (120) detachably connected with the front side of the wind channel ring (110). The oil guide part (200) comprises a first oil guide part (210) arranged on the front side edge of the wind channel ring (110) and extending along the wind channel ring (110) to the wind channel.

3. The air duct structure according to claim 1, wherein The volute (100) further comprises a volute back plate (130) connected with the rear side of the wind channel ring (110), the volute back plate (130) being provided with a fan mounting part (131) for mounting a fan assembly (300), the fan mounting part (131) being internally provided with a mounting opening (132). The volute back plate (130) and the wind channel ring (110) are integrally formed.

4. The air duct structure according to claim 3, wherein The oil guide part (200) comprises a second oil guide part (220) arranged on the inner wall of the volute back plate (130) and extending along the volute back plate (130) to the wind channel, and the second oil guide part (220) is arranged along the inner ring of the fan mounting part (131).

5. The air duct structure according to claim 1, wherein The bottom of the wind channel ring (110) is provided with a slope (112), and the oil outlet (111) is located at the lowest position of the slope (112).

6. The air duct structure according to claim 5, wherein The slope (112) is arranged at a first included angle alpha (alpha) with the horizontal line, and the range of the first included angle alpha (alpha) is 3 DEG ≤ alpha ≤ 8 DEG.

7. The air duct structure according to claim 5, wherein The rear side of the wind channel ring (110) is higher than the front side of the wind channel ring (110), so that the bottom of the wind channel ring (110) forms a slope (112), and the oil outlet (111) is arranged close to the front side of the wind channel ring (110).

8. The air duct structure according to claim 1, wherein The wind channel structure (011) further comprises an oil guide support (400) provided with an oil guide groove (410), the oil guide support (400) being arranged below the volute (100), and the oil guide groove (410) being in communication with the oil outlet (111).

9. The air duct structure according to claim 8, wherein The wind channel structure (011) is arranged on a main case (012), the volute (100) and the oil guide support (400) are connected with the side wall of the main case (012), the oil guide groove (410) is arranged at a second included angle beta (beta) with the rear plate (0122) of the main case (012), and the range of the second included angle beta (beta) is 50 DEG ≤ beta ≤ 70 DEG.

10. A range hood characterized by The application further relates to a wind channel structure (011) according to any one of claims 1-9. The application further relates to a wind channel structure (011) according to any one of claims 1-9.

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