Smoke hood and range hood containing it

Abstract

This utility model provides a smoke collection hood and a range hood containing the same. The smoke collection hood includes an inclined top plate and an oil collection box. The smoke collection hood also includes a cleaning unit disposed inside the smoke collection hood. The cleaning unit includes a steam generator and a nozzle. The nozzle is connected to the steam generator. The first end of the nozzle faces the top plate and has a spray groove. The nozzle sprays a fan-shaped fluid through the spray groove. The fan-shaped fluid includes a core area. Along the length direction of the top plate, the size of the core area is greater than or equal to half the length of the top plate. Along the width direction of the top plate, the size of the end of the core area away from the nozzle is greater than or equal to the width of the top plate. Two cleaning units are provided, and the two cleaning units are respectively disposed on opposite side plates of the smoke collection hood.

Description

Technical Field

[0001] This utility model specifically relates to a smoke collection hood and a range hood containing the same. Background Technology

[0002] To better capture kitchen fumes, the size of the fume hood is usually set to be large, so as to cover a wider area and ensure that the fumes can be quickly sucked into the fume hood after they are generated.

[0003] However, the large volume of the smoke collection chamber causes the speed and temperature of the fumes to drop rapidly upon entry, resulting in the fumes dispersing and adhering to the inner surface of the smoke hood's top plate. Although these oil droplets are small, they adhere firmly to the inner surface of the top plate under the combined effect of their own gravity and the adhesive force with the smoke hood's surface. While some range hoods employ an angled design for the top plate to allow the oil droplets to slide naturally into the drip tray, in practice, it often takes multiple accumulations or even several days for the oil droplets to gather and flow into the drip tray. Especially in winter, when temperatures are low and the intervals between cooking sessions are long, the oil droplets on the inner surface of the smoke hood cool more easily. Once cooled, the density of the oil droplets decreases while their volume increases, forming multiple localized bumps on the inner surface of the smoke hood. This roughens the inner surface of the top plate, further increasing the adhesive force of the fumes.

[0004] In the prior art, a scraper capable of reciprocating motion is usually used to scrape off the oil droplets on the top plate. However, due to the limited internal space of the fume hood, the scraper size is slightly smaller than the top plate, resulting in dead corners for oil droplet removal on the top plate. Furthermore, when the scraper scrapes off the oil droplets multiple times, there is a defect that the oil droplets are evenly spread on the top plate, making it difficult to remove the oil stains from the top plate. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of existing technology where oil droplets accumulate on the top plate of the smoke collection hood, creating cleaning dead corners and making it difficult to completely remove them, and to provide a smoke collection hood and a range hood containing the hood.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] A smoke collection hood, comprising an inclined top plate and an oil collection box, and further comprising:

[0008] A cleaning unit is disposed within the smoke hood. The cleaning unit includes a steam generator and a nozzle. The nozzle is connected to the steam generator. The first end of the nozzle faces the top plate and has a spray groove. The nozzle sprays a fan-shaped fluid through the spray groove. The fan-shaped fluid includes a core area. Along the length direction of the top plate, the size of the core area is greater than or equal to half the length of the top plate. Along the width direction of the top plate, the size of the end of the core area away from the nozzle is greater than or equal to the width of the top plate. Two cleaning units are provided, and the two cleaning units are respectively disposed on opposite side plates of the smoke hood.

[0009] In this solution, a cleaning unit is installed inside the fume hood to effectively clean the top panel of the hood. The cleaning unit includes a steam generator and nozzles, using the fluid generated by the steam generator to soften and clean stubborn oil droplets on the top panel. Furthermore, the core area of ​​the fan-shaped fluid sprayed from the nozzles is used to clean the top panel, improving cleaning efficiency and preventing oil residue. The core area covers half the length and width of the top panel. Two cleaning units are used to avoid cleaning blind spots.

[0010] Preferably, the included angle of the spray channel is θ, where θ = tanL / D, and D is the length of the top plate along its length direction, and L is the width of the top plate along its width direction.

[0011] In this solution, by limiting the included angle of the slot, the core area can cover half the length of the top plate and the width of the top plate.

[0012] Preferably, along the height direction of the smoke hood, the first end of the nozzle is inclined towards the top plate from a horizontal plane parallel to the bottom plate of the smoke hood.

[0013] In this solution, by setting the nozzle's first end towards the top plate, compared to setting the nozzle's first end parallel to the base plate, the cleaning effect can be improved.

[0014] Preferably, the inclination angle of the first end of the nozzle is α, where α = arctan2h1 / D1, and D1 is half the length of the top plate, and h1 is the height difference between the horizontal plane parallel to the bottom plate of the smoke hood and the first end of the nozzle along the height direction of the smoke hood.

[0015] In this solution, the above settings limit the tilt angle of the first end of the nozzle, thereby improving the cleaning effect and ensuring the coverage of the core area of ​​the nozzle.

[0016] Preferably, the cleaning unit further includes a drive unit and a rotating platform, the drive unit and the rotating platform are disposed on the side plate of the smoke collection hood, the output shaft of the drive unit is connected to one end of the rotating platform, and the second end of the nozzle is connected to the rotating platform.

[0017] In this solution, the above settings enable the nozzle to rotate, and the cleaning range of the rotating nozzle is further improved.

[0018] Preferably, the rotating platform includes a flange bearing seat and a rotating drum, with the flange bearing seat provided at both ends of the rotating drum. The rotating drum is mounted on the side plate of the smoke hood via the flange bearing seat, and the second end of the nozzle is connected to the rotating drum.

[0019] In this solution, the above settings are used to achieve nozzle rotation.

[0020] Preferably, the nozzle has a rotation range of 180°, and the nozzle reciprocates from the first end to the second end of the side plate of the smoke hood.

[0021] In this solution, the above settings enable the nozzle to reciprocate, thereby further improving the cleaning effect.

[0022] Preferably, the cleaning unit further includes a cleaning fluid storage tank, which is connected to the steam generator. Along the height direction of the fume hood, the cleaning fluid storage tank is installed at a higher height than the steam generator.

[0023] In this solution, the cleaning fluid in the cleaning fluid storage tank can flow to the steam generator along the height of the fume hood, eliminating the need for an additional pump to pump the cleaning fluid.

[0024] Preferably, the smoke hood further includes a door panel, which is disposed at the air inlet of the top plate. When the nozzle cleans the top plate, the door panel closes the air inlet.

[0025] In this solution, the above settings are used to seal the air inlet through the door panel when cleaning the top panel, preventing fluid from dripping from the air inlet and improving the user experience.

[0026] A range hood, the range hood comprising a smoke collection hood as described above.

[0027] In this solution, the range hood includes the aforementioned smoke collection hood, which cleans the top plate through a cleaning unit, preventing oil fumes from condensing into oil droplets on the top plate. This avoids the accumulation of oil droplets affecting the aerodynamic performance of the gas entering the smoke collection hood, ensuring that the range hood's smoke extraction efficiency remains consistently high.

[0028] The significant advantages of this invention are as follows: By placing the cleaning unit inside the fume hood, it effectively cleans the top plate of the hood. The cleaning unit includes a steam generator and nozzles, using the fluid generated by the steam generator to soften and clean stubborn oil droplets on the top plate. Furthermore, the core area of ​​the fan-shaped fluid sprayed from the nozzles cleans the top plate, enhancing the cleaning effect and preventing oil residue. The core area covers half the length and width of the top plate. Two cleaning units are provided to avoid cleaning dead zones. Attached Figure Description

[0029] Figure 1 This is a perspective view of a range hood according to a preferred embodiment of the present invention.

[0030] Figure 2 This diagram shows the positional relationship between the cleaning unit and the top plate in a preferred embodiment of the present invention.

[0031] Figure 3 This is a schematic diagram of the door panel according to a preferred embodiment of the present invention.

[0032] Figure 4 This is a diagram showing the positional relationship between the nozzle and the top plate in a preferred embodiment of the present invention.

[0033] Figure 5 This diagram shows the positional relationship between the steam generator and the cleaning fluid storage tank in a preferred embodiment of the present invention.

[0034] Figure 6 This is a perspective view of the nozzle of a preferred embodiment of the present invention.

[0035] Figure 7 This is a schematic diagram of the core area of ​​a preferred embodiment of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] Side panel 10

[0038] Core Area 20

[0039] Base plate 30

[0040] Horizontal plane 40

[0041] Top plate 1

[0042] Air inlet 11

[0043] Oil collection box 2

[0044] Cleaning Unit 3

[0045] Steam generator 31

[0046] Nozzle 32

[0047] Spray tank 321

[0048] Drive unit 33

[0049] Rotary platform 34

[0050] Flange bearing housing 341

[0051] Rotating drum 342

[0052] Cleaning fluid storage tank 35

[0053] Door panel 4

[0054] Length direction A

[0055] Width direction B

[0056] Height direction C Detailed Implementation

[0057] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0058] This embodiment provides a smoke collection hood, the specific structure of which is as follows: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the smoke hood includes an inclined top plate 1 and an oil collection box 2, and the smoke hood also includes:

[0059] Cleaning unit 3 is installed inside the smoke hood. Cleaning unit 3 includes a steam generator 31 and a nozzle 32. The nozzle 32 is installed on the side plate 10 of the smoke hood and communicates with the steam generator 31. The first end of the nozzle 32 faces the top plate 1. The first end of the nozzle 32 is provided with a spray groove 321. The nozzle 32 sprays out a fan-shaped fluid through the spray groove 321. The fan-shaped fluid includes a core area 20. Along the length direction A of the top plate 1, the size of the core area 20 is greater than or equal to half the length of the top plate 1. Along the width direction B of the top plate 1, the size of the end of the core area 20 away from the nozzle 32 is greater than or equal to the width of the top plate 1. In addition, there are two cleaning units 3. The two cleaning units 3 are respectively installed on the opposite side plates 10 of the smoke hood.

[0060] Specifically, the top plate 1 is used to contact the cooking fumes and introduce them into the fume hood through the air inlet 11 of the top plate 1. The top plate 1 is inclined and has an oil collection box 2 at the lower end. After cooking, the oil stains in the fumes accumulate on the top plate 1. By setting the cleaning unit 3 inside the fume hood, the top plate 1 of the fume hood can be effectively cleaned. The cleaning unit 3 includes a steam generator 31 and a nozzle 32. Both the steam generator 31 and the nozzle 32 are set on the side plate 10. The steam generator 31 is a steam generating device used in the prior art to generate steam. The nozzle 32 is used to spray the steam generated by the steam generator 31 or a fluid mixed with steam onto the top plate 1 to soften the oil stains with steam. It is particularly suitable for cleaning stubborn oil droplets when there is a long interval between cooking times and the oil stains have a long condensation time. Then, the core area 20 of the fan-shaped fluid generated by the nozzle 32 washes the top plate 1, so that the oil stains are quickly decomposed and guided into the oil collection box 2 through the top plate 1. The core area 20 covers half the length of the top plate 1 and the width of the top plate 1 to avoid cleaning dead spots.

[0061] It should be noted that, as Figure 7 As shown, when the nozzle 32 ejects fluid, the fluid forms a fan-shaped structure, and a potential core region, a core region 20, and a diffusion droplet region are formed sequentially from the first end of the nozzle 32. The core region, core region 20, and diffusion droplet region are different regions corresponding to the fluid in the prior art, and this embodiment does not improve upon them. Taking water as an example, the water in the core region 20 can be in the form of water droplets, that is, the water in contact with the top plate 1 is in the form of water droplets, which can effectively soften the oil stains and quickly wash away the softened oil stains from the top plate 1. The water in the potential core region is a water column, which has a large flow rate but a general softening effect. The water in the diffusion droplet region is a water mist, which has a poor rinsing effect. Therefore, the core area 20 is set to cover half the width and half the length of the top plate 1, completely covering the width direction B and covering half of the length direction A. There are two cleaning units 3, that is, there are two nozzles 32, and each of the two nozzles 32 covers half of the length direction A. By increasing the number of nozzles 32, full coverage is achieved, so that the cleaning unit 3 can thoroughly clean the top plate 1 and avoid cleaning dead corners.

[0062] Furthermore, in this embodiment, the included angle of the spray groove 321 is θ, where θ = tanL / D, and D is the length of the top plate 1 along the length direction A, and L is the width of the top plate 1 along the width direction B.

[0063] Specifically, the spray groove 321 is a V-shaped groove to ensure that the cleaning coverage area of ​​the fluid is maximized. The V-shaped groove is located in the middle area of ​​the first end of the nozzle 32. By substituting L and D into θ=tanL / D, the range of values ​​of θ is obtained so that the core area 20 can cover half the length of the top plate 1 and the width area of ​​the top plate 1.

[0064] like Figure 4 As shown, in this embodiment, along the height direction C of the smoke collection hood, the first end of the nozzle 32 is inclined towards the top plate 1 from the horizontal plane 40 parallel to the bottom plate 30 of the smoke collection hood.

[0065] Specifically, the base plate 30 is positioned above the top plate 1 and is parallel to the ground. The horizontal plane 40, which is parallel to the base plate 30, is the plane where the second end of the nozzle 32 is located. This plane is parallel to the base plate 30. The first end of the nozzle 32 is set at an angle to the horizontal plane 40 and is positioned towards the top plate 1. Compared to the first and second ends of the nozzle 32 being located on the same plane and parallel to the base plate 30, the first end of the nozzle 32 being positioned towards the top plate 1 can increase the impact force of the fluid impacting the oil stains, thereby improving the cleaning effect.

[0066] In this embodiment, the tilt angle of the first end of the nozzle 32 is α, where α = arctan2h1 / D1, D1 is half the length of the top plate 1, and h1 is the height difference between the horizontal plane 40 parallel to the bottom plate 30 of the smoke collection hood and the first end of the nozzle 32 along the height direction C of the smoke collection hood.

[0067] Specifically, by limiting the tilt angle of the first end of the nozzle 32, the core area 20 of the fluid ejected from the nozzle 32 is ensured to impact the surface of the top plate 1 in the far center area from the nozzle 32, thereby improving the cleaning effect and ensuring the coverage of the core area 20 of the nozzle 32.

[0068] In this embodiment, the cleaning unit 3 further includes a drive unit 33 and a rotating platform 34. The drive unit 33 and the rotating platform 34 are disposed on the side plate 10 of the smoke collection hood. The output shaft of the drive unit 33 is connected to one end of the rotating platform 34, and the second end of the nozzle 32 is connected to the rotating platform 34.

[0069] Specifically, the drive unit 33 is a drive motor in the prior art. One end of the rotating platform 34 is connected to the output shaft of the drive motor through a coupling so that the drive unit 33 can drive the rotating platform 34 to rotate. At the same time, the second end of the nozzle 32 is connected to the outer edge of the rotating platform 34 so that the nozzle 32 can rotate. Compared with the fixed nozzle 32, the cleaning range of the rotated nozzle 32 is further improved.

[0070] Furthermore, in this embodiment, the rotating platform 34 includes a flange bearing seat 341 and a rotating drum 342. Both ends of the rotating drum 342 are provided with flange bearing seats 341. The rotating drum 342 is mounted on the side plate 10 of the smoke hood through the flange bearing seats 341. The second end of the nozzle 32 is connected to the rotating drum 342.

[0071] Specifically, two flange bearing seats 341 are provided, which are respectively located at both ends of the rotating drum 342. One end of the rotating drum 342 is connected to the output shaft of the drive motor, so that the drive motor can drive the rotating drum 342 to rotate. The second end of the nozzle 32 is provided with an annular structure, which is sleeved on the outer edge of the rotating drum 342. The nozzle 32 is connected to the rotating drum 342 through the annular structure, thereby realizing the rotation of the nozzle 32.

[0072] In this embodiment, the nozzle 32 rotates within a range of 180°, and the nozzle 32 reciprocates from the first end to the second end of the side plate 10 of the smoke collection hood.

[0073] Specifically, the side plate 10 is arranged along the height direction C of the smoke collection hood, the cleaning unit 3 is disposed on the side plate 10, and the nozzle 32 can rotate relative to the side plate 10 via the drive unit 33 and the rotating platform 34. The rotation is a reciprocating rotation from the first end to the second end of the side plate 10, and the rotation range is 180°. By limiting the rotation range of the nozzle 32, the nozzle 32 can fully cover the top plate 1 for cleaning. At the same time, the nozzle 32 can reciprocate to further eliminate cleaning dead corners.

[0074] In this embodiment, the cleaning unit 3 also includes a cleaning fluid storage tank 35, which is connected to the steam generator 31. Along the height direction C of the smoke hood, the cleaning fluid storage tank 35 is set at a higher height than the steam generator 31.

[0075] Specifically, the cleaning solution storage tank 35 is used to store the cleaning solution. By setting the height of the cleaning solution storage tank 35 higher than the height of the steam generator 31, the cleaning solution in the storage tank 35 can flow along the height direction C of the fume hood to the steam generator 31, eliminating the need for an additional pump to deliver the cleaning solution. By pumping the cleaning solution into the steam generator 31, the cleaning solution is mixed with the steam generated by the steam generator 31. This allows for the softening of stubborn oil droplets by steam spray and the cleaning of newly accumulated oil droplets, further improving the cleaning effect and making it suitable for oil stains generated by different cooking environments and cooking habits.

[0076] like Figure 3 As shown, in this embodiment, the smoke hood also includes a door panel 4, which is located at the air inlet 11 of the top plate 1. When the nozzle 32 cleans the top plate 1, the door panel 4 closes the air inlet 11.

[0077] Specifically, the door panel 4 is a flat material and is slidably mounted on the top plate 1. Slide rails can be installed at both ends of the door panel 4, with both ends of the door panel 4 extending into the slide rails. Alternatively, a slider can be installed in the middle area of ​​the door panel 4, and a slide rail can be installed in the top plate 1 corresponding to the middle area of ​​the door panel 4. By installing the door panel 4 on the top plate 1, the air inlet 11 can be sealed by the door panel 4 when cleaning the top plate 1 to prevent fluid from dripping from the air inlet 11, thereby improving the user experience.

[0078] This embodiment also provides a range hood, which includes the above-mentioned smoke collection hood, so as to clean the top plate 1 through the cleaning unit 3, so that the oil fumes cannot condense into oil droplets on the top plate 1, avoid the accumulation of oil droplets and affect the aerodynamic performance of the gas entering the smoke collection hood, and keep the smoke extraction efficiency of the range hood always high.

[0079] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A fume hood comprising a top plate disposed at an angle and an oil collection box, characterized in that, The smoke collection hood also includes: A cleaning unit is disposed within the smoke hood. The cleaning unit includes a steam generator and a nozzle. The nozzle is connected to the steam generator, and its first end faces the top plate. The first end of the nozzle is provided with a spray groove, through which the nozzle sprays a fan-shaped fluid. The fan-shaped fluid includes a core area. Along the length direction of the top plate, the size of the core area is greater than or equal to half the length of the top plate. Along the width direction of the top plate, the size of the end of the core area away from the nozzle is greater than or equal to the width of the top plate. Two cleaning units are provided, and the two cleaning units are respectively disposed on opposite side plates of the smoke hood.

2. The hood of claim 1, wherein The included angle of the spray channel is θ, where θ = tanL / D, and D is the length of the top plate along its length direction, and L is the width of the top plate along its width direction.

3. The smoke collection hood as described in claim 2, characterized in that, Along the height direction of the smoke collection hood, the first end of the nozzle is inclined towards the top plate from the horizontal plane parallel to the bottom plate of the smoke collection hood.

4. The smoke collection hood as described in claim 3, characterized in that, The inclination angle of the first end of the nozzle is α, where α = arctan2h1 / D1, D1 is half the length of the top plate, and h1 is the height difference between the horizontal plane parallel to the bottom plate of the smoke hood and the first end of the nozzle along the height direction of the smoke hood.

5. The smoke collection hood as described in claim 4, characterized in that, The cleaning unit also includes a drive unit and a rotating platform. The drive unit and the rotating platform are disposed on the side plate of the smoke collection hood. The output shaft of the drive unit is connected to one end of the rotating platform, and the second end of the nozzle is connected to the rotating platform.

6. The smoke collection hood as described in claim 5, characterized in that, The rotating platform includes a flange bearing seat and a rotating drum. The flange bearing seat is provided at both ends of the rotating drum. The rotating drum is mounted on the side plate of the smoke hood through the flange bearing seat. The second end of the nozzle is connected to the rotating drum.

7. The smoke collection hood as described in claim 5, characterized in that, The nozzle has a rotation range of 180° and reciprocates from the first end to the second end of the side plate of the smoke collection hood.

8. The smoke collection hood as described in claim 7, characterized in that, The cleaning unit also includes a cleaning fluid storage tank, which is connected to the steam generator. Along the height direction of the fume hood, the cleaning fluid storage tank is installed at a higher height than the steam generator.

9. The smoke collection hood as described in claim 1, characterized in that, The smoke hood also includes a door panel, which is located at the air inlet of the top plate. When the nozzle cleans the top plate, the door panel closes the air inlet.

10. A range hood, characterized in that, The range hood includes a smoke collection hood as described in any one of claims 1-9.

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