Range hood

Abstract

The invention discloses a range hood, comprising: a box body, the bottom of which is provided with a decorative plate, and the decorative plate is a light-transmitting panel; the lighting device is arranged on the decorative plate; the smoke barrier is provided with a shading barrier strip, the barrier strip is provided with edges, the smoke barrier can turn over relative to the box body and can be in a closed state and an open state, and when the smoke barrier is in the open state, at least part of the edges make contact with the decorative plate; the decorative plate comprises a light-transmitting area located below the lighting device, a light-proof area is formed in the area, located in front of the lighting device, of the upper surface of the decorative plate, a refraction light-transmitting area is formed forwards from the light-transmitting area on the lower surface of the decorative plate, and when the smoke barrier is in an open state, the edges of the smoke barrier are located in the refraction light-transmitting area.

Description

Technical Field

[0001] The invention relates to an oil fume purification device, in particular to a range hood. Background Art

[0002] Chinese cooking produces a lot of oil smoke. In order to keep the kitchen environment clean and maintain human health, range hoods have become one of the indispensable appliances in modern family kitchens. As the application rate of range hoods increases, people pay more and more attention to the oil smoke extraction effect of range hoods.

[0003] In order to improve the oil fume extraction effect, a common method is to set up a smoke shield, thereby improving the oil fume extraction effect by expanding the smoke collection range. This range hood with a smoke shield effectively blocks the escape of oil fume through the smoke shield, such as the range hood disclosed in the Chinese patent application number 202410967469.6 of the applicant, which includes: a housing, a first air inlet and a second air inlet are opened on the front side wall, and the first air inlet and the second air inlet are arranged in sequence from bottom to top; a smoke guide plate, rotatably connected to the first air inlet; a smoke shield, rotatably connected to the second air inlet, and a lighting device is also provided in the area above the second air inlet. When the smoke shield is in the state of opening the second air inlet, the vertical projection of the lighting device is located behind the vertical projection of the smoke shield.

[0004] However, there will inevitably be a gap between the smoke baffle and the range hood housing, and some oil smoke will overflow from this gap. In order to improve the oil smoke absorption effect and prevent the escape of oil smoke, some range hoods with smoke baffles reduce the gap by reducing the fitting gap. Due to the processing and molding errors of the smoke baffle, the deformation caused by local support on the left and right ends, and gravity, the controllability of the gap is poor. In particular, when the above-mentioned lighting device is arranged on the rear side of the smoke baffle, the light of the lighting device will intensify the problem of uneven gaps, affecting the texture of the whole machine and the user's cooking experience.

[0005] Therefore, there is room for further improvement. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a range hood to improve the uniformity of lighting output in view of the deficiencies in the above-mentioned prior art.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: a range hood comprising:

[0008] The box body has a decorative panel at the bottom, and the decorative panel is a light-transmitting panel;

[0009] a lighting device, disposed on the decorative panel; and

[0010] a smoke baffle having a light-shielding baffle strip having an edge; the smoke baffle can be flipped relative to the box body to be in a closed state and an open state; when in the open state, the edge is at least partially in contact with the decorative panel;

[0011] Its characteristics are:

[0012] The decorative panel includes a light-transmitting area located below the lighting device, an area on the upper surface of the decorative panel located in front of the lighting device forms a light-opaque area, and a refractive light-transmitting area is formed on the lower surface of the decorative panel from the light-transmitting area forward. When the smoke shield is in an open state, the edge of the smoke shield is located in the refractive light-transmitting area.

[0013] Since the smoke damper has a light-blocking bar, the bar is formed with an edge. When the smoke damper is opened, it can block the gap between the smoke damper and the decorative panel. Due to the uneven deformation of the bar itself or the processing error of the smoke damper, as well as the deformation caused by the local support at the left and right ends and gravity, the edge is in at least partial contact with the decorative panel but cannot be in full contact along the entire length. As a result, the light of the lighting device leaks from the non-contact position, while the contact position blocks the light, resulting in intermittent light emission at this position. To this end, setting the edge in the refractive light-transmitting area of the decorative panel can have the following advantages: ① Ensure that the light of the lighting device can be derived from the refractive light-transmitting area, regardless of whether the edge is in contact with the decorative panel, solve the problem of discontinuous light leakage caused by contact interruption, and make the light output uniform; ② The refracted light is softer, avoiding the exposure of strong light and affecting the user's cooking experience; ③ When looking directly at the lighting device area, its boundary is completely inside the smoke damper, improving the refinement of the entire machine.

[0014] Furthermore, the range of the refractive light-transmitting area is, the width of the refractive light-transmitting area is W, and satisfies: W=t*tanβ, where t is the thickness of the decorative plate, and β is the critical angle of refraction of the decorative plate.

[0015] Preferably, β satisfies the following relationship: β≤50°.

[0016] Furthermore, a light-shielding layer is provided on the upper surface of the decorative plate, the area of the upper surface of the decorative plate covered by the light-shielding layer constitutes the light-opaque area, and the area of the decorative plate located behind the light-shielding layer constitutes the light-transmitting area.

[0017] Therefore, a light-proof area is formed by providing a light-shielding layer on the upper surface of the decorative plate.

[0018] Furthermore, the rear end of the light-shielding layer extends to the light-emitting area of the lighting device, and the front end of the light-transmitting area is located behind the front end of the light-emitting area of the lighting device.

[0019] As a result, the light-emitting area of the lighting device covers the light-transmitting area of the decorative panel, thereby ensuring that the light-transmitting area is illuminated after the lighting device is turned on.

[0020] Furthermore, the structure of the lighting device is that the lighting device includes a lampshade, a lamp board and a light-transmitting plate, the lampshade is a hollow cover body with an opening on one side, the light-transmitting plate is arranged at the opening of the lampshade, the light board is arranged in the lampshade and opposite to the light-transmitting plate, and the corresponding area of the light-transmitting plate constitutes the light-emitting area.

[0021] Furthermore, to ensure that the light from the luminous area covers the light-transmitting area, the rear end of the light-shielding layer is located before the front end of the light-transmitting plate, so that part of the luminous area is located before the light-transmitting area.

[0022] Furthermore, the installation structure of the lighting device is that the box body further includes a mounting plate located above the decorative plate, the mounting plate is provided with a through hole, and the light-transmitting plate is located in the through hole.

[0023] In order to prevent oil from entering the lampshade, the portion of the lampshade located at the periphery of the opening side is provided with a lampshade rubber bag, and the lampshade rubber bag conflicts with the mounting surface of the mounting plate located at the periphery of the through hole.

[0024] Preferably, the light-shielding layer is silk-screened on the upper surface of the decorative plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the range hood in the open state according to an embodiment of the present invention;

[0026] Figure 2 This is a cross-sectional view of the range hood in an open state according to an embodiment of the present invention;

[0027] Figure 3 This is a cross-sectional view of the range hood in the open state according to an embodiment of the present invention (cross-sectional view and Figure 3 parallel);

[0028] Figure 4 for Figure 3 A schematic diagram of the partial I enlargement;

[0029] Figure 5 Schematic diagram of a smoke baffle (including baffle bars) of a range hood according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present invention can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0032] See also Figures 1 to 5 A range hood includes a housing 1, a lighting device 2 and a smoke baffle 3.

[0033] A fan (not shown) may be provided in the box 1, which may be open at the bottom or have an air inlet component provided at the bottom of the box 1. A decorative panel 11 is provided at the front bottom of the box 1, and the lighting device 2 is provided on the decorative panel 11.

[0034] The box body 1 also includes a mounting plate 12 (i.e., the mounting base of the lighting device 2) located above the decorative plate 11, and a through hole 121 is provided on the mounting plate 12 for installing the lighting device 2. The lighting device 2 includes a lampshade 21, a lamp board 22, and a light-transmitting plate 23, wherein the lampshade 21 is a hollow cover body with an opening on one side. When installed, its open side faces the direction where lighting is required. For example, in this embodiment, the opening of the lampshade 21 is downward. The light-transmitting plate 23 is arranged at the opening of the lampshade 21, and the two can be fixed by ultrasonic welding. The lamp board 22 is arranged in the lampshade 21, opposite to the light-transmitting plate 23. The portion of the lampshade 21 located on the outer periphery of the opening side is provided with a lampshade rubber bag 24, and the lampshade rubber bag 24 and the lampshade 21 are preferably completed by injection molding using an integrated process.

[0035] The light-transmitting plate 23 is positioned in correspondence with the through-hole 121 and is positioned within the through-hole 121 to allow light to escape. The end of the lampshade 21, which is used to position the light-transmitting plate 23, is also inserted into the through-hole 111. The lampshade rubber coating 24 contacts the mounting surface of the mounting plate 12 located outside the through-hole 121, thereby creating a sealed area between the lampshade 21 and the mounting plate 12 to prevent oil ingress.

[0036] The smoke damper 3 is installed at the bottom of the box body 1 and can be flipped relative to the box body 1, thereby being in an open state and a closed state. In this embodiment, when closed, it is flush with the bottom of the box body 1, achieving a completely flat closed state, and is located as a whole on the rear side of the decorative panel 11. In the closed state, it is flipped forward more than 90° to open, so that the upper end of the smoke damper 3 is located below the decorative panel 11 and corresponds to the front side of the lighting device 2, and the lower end of the smoke damper 3 is located in front of its upper end, that is, the smoke damper 3 is vertical or tilted forward.

[0037] The smoke damper 3 includes a light-blocking (opaque) barrier strip 31 with a ridge 311. When the smoke damper 3 is open, the barrier strip 31 blocks the gap between the smoke damper 3 and the decorative panel 11, preventing smoke from leaking there. The barrier strip 31 can be a separate rubber, plastic, or silicone strip, or it can be a raised portion of the back panel of the smoke damper 3 itself. Ideally, when the smoke damper 3 is open, the ridge 311 of the barrier strip 31 contacts the lower surface of the decorative panel 11 (narrow contact, close to line contact). However, due to uneven deformation of the barrier strip itself, errors in the processing and molding of the smoke damper 3, deformation caused by localized support at the left and right ends, and gravity, the ridge 311 of the barrier strip 31 may not maintain contact with the decorative panel 11 along its entire length (along the left and right sides of the range hood), but may only partially contact it. As a result, light from the lighting device 2 leaks from non-contacting locations, while light is blocked in contacting locations, resulting in intermittent light output at these locations.

[0038] Therefore, in the present invention, the decorative plate 11 is a light-transmitting panel, such as a glass panel, a plastic panel, etc., and the upper surface of the decorative plate 11 is silk-screened with a light-shielding layer 111, such as an ink silk-screen layer, a light-shielding film, etc. For clarity, Figure 3 and Figure 4 The thickness of the light shielding layer 111 relative to the decorative plate 11 is magnified in FIG. The portion of the decorative plate 11 behind the light shielding layer 111 constitutes a light-transmitting area M1. The area on the upper surface of the decorative plate 11 covered by the light shielding layer 111 constitutes a light-impermeable area.

[0039] The rear end of the light-shielding layer 111 is located behind the front end of the light-transmitting plate 23, so that the portion of the light-emitting area M2 corresponding to the light-transmitting plate 23 is located in front of the light-transmitting area M1, thereby ensuring that after the lighting device 2 is turned on, the light-transmitting area M1 is illuminated.

[0040] According to the optical path characteristics, when light enters the glass, it will be distributed within the critical angle β. That is to say, when the light emitted from the luminous area M2 reaches the upper surface of the decorative plate 11 (after being averaged by the light-transmitting plate 23, the angle between it and the upper surface of the decorative plate 11 is between 0 and 90 degrees), the maximum refraction angle is β. Then, the light incident from the rear end of the shading layer 111 will be refracted and emitted from the front side of the position corresponding to the rear end of the shading layer 111. Therefore, the emission position corresponding to the maximum refraction angle β constitutes the boundary point M, and the bottom surface of the decorative plate 11 between the boundary point M and the light-transmitting area M1 forms a refractive light-transmitting area M3, whose width W = t*tanβ, where t is the thickness of the decorative plate 11. β is related to the glass material. In this embodiment, β≤50°.

[0041] The light intensity within the refractive light-transmitting area M2 is significantly lower than that within the light-transmitting area M1 without the light-shielding screen. When the smoke damper 3 is open, the edge 311 of the baffle 31 on its upper end is located within the corresponding range of the refractive light-transmitting area M2. For example, in this embodiment, since the decorative panel 11 is horizontal, the projection of the upper end of the smoke damper 3 on the horizontal plane is located within the projection range of the refractive light-transmitting area M2 on the horizontal plane. This arrangement has the following advantages: 1) It ensures that the light of the lighting device can be drawn out from the refractive light-transmitting area M2, regardless of whether the edge 311 is in contact with the decorative panel 11, thus solving the problem of discontinuous light leakage caused by intermittent contact and ensuring uniform light output; 2) The refracted light is relatively soft, avoiding the exposure of strong light that affects the user's cooking experience; 3) When looking directly at the lighting device 2 area, its boundary is completely inside the smoke damper 3, improving the refinement of the entire machine.

[0042] In the above embodiment, the decorative panel 11 is horizontal. Alternatively, the decorative panel 11 may be inclined, as shown in the background art.

Claims

1. A range hood comprising: The box body (1) has a decorative panel (11) at its bottom, and the decorative panel (11) is a light-transmitting panel; A lighting device (2) is provided on the decorative panel (11); and A smoke baffle (3) having a light-shielding baffle (31), wherein the baffle (31) has an edge (311); the smoke baffle (3) can be flipped relative to the box body (1) and can be in a closed state and an open state; when in the open state, the edge (311) at least partially contacts the decorative plate (11); Its characteristics are: The decorative plate (11) comprises a light-transmitting area (M1) located below the lighting device (2); an area on the upper surface of the decorative plate (11) located in front of the lighting device (2) forms a light-proof area; a lower surface of the decorative plate (11) forms a refractive light-transmitting area (M3) extending forward from the light-transmitting area (M1); and when the smoke shield (3) is in an open state, the edge (311) of the smoke shield (3) is located within the refractive light-transmitting area (M3).

2. The range hood according to claim 1, characterized in that: The width of the refractive light-transmitting area (M3) is W, and satisfies the following relationship: W=t*tanβ, wherein t is the thickness of the decorative plate (11), and β is the critical angle of refraction of the decorative plate (11).

3. The range hood according to claim 2, characterized in that: β satisfies the following relationship: β≤50°.

4. The range hood according to any one of claims 1 to 3, characterized in that: The upper surface of the decorative plate (11) is provided with a light-shielding layer (111); the area of the upper surface of the decorative plate (11) covered by the light-shielding layer (111) constitutes the light-impermeable area; and the area of the decorative plate (11) located behind the light-shielding layer (111) constitutes the light-transmitting area (M1).

5. The range hood according to claim 4, characterized in that: The rear end of the light-shielding layer (111) extends to the light-emitting area (M2) of the lighting device (2), and the front end of the light-transmitting area (M1) is located behind the front end of the light-emitting area (M2) of the lighting device (2).

6. The range hood according to claim 5, characterized in that: The lighting device (2) comprises a lampshade (21), a lamp panel (22) and a light-transmitting plate (23); the lampshade (21) is a hollow housing with an opening on one side; the light-transmitting plate (23) is arranged at the opening of the lampshade (21); the lamp panel (22) is arranged inside the lampshade (21) and opposite to the light-transmitting plate (23); and the corresponding area of the light-transmitting plate (23) constitutes the light-emitting area (M2).

7. The range hood according to claim 6, characterized in that: The rear end of the light-shielding layer (111) is located in front of the front end of the light-transmitting plate (23), so that part of the light-emitting area (M2) is located in front of the light-transmitting area (M1).

8. The range hood according to claim 6, characterized in that: The box body (1) further comprises a mounting plate (12) located above the decorative plate (11); a through hole (121) is provided on the mounting plate (12); and the light-transmitting plate (23) is located in the through hole (121).

9. The range hood according to claim 8, characterized in that: The portion of the lampshade (21) located on the outer periphery of the opening side is provided with a lampshade rubber package (24), and the lampshade rubber package (24) is in conflict with the mounting surface of the mounting plate (12) located on the outer periphery of the through hole (121).

10. The range hood according to claim 6, characterized in that: The light-shielding layer (111) is silk-screened on the upper surface of the decorative plate (11).

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