Range hood

Abstract

The utility model relates to a range hood, which comprises an exhaust fume collecting hood provided with a top wall and a bottom wall, the bottom wall is provided with a fume inlet, and the top wall is provided with a fume outlet; the light guide pipe is vertically arranged in the exhaust fume collecting hood and is provided with an upper end opening and a lower end opening; a first light-transmitting window is arranged on the top wall of the exhaust fume collecting hood corresponding to the upper end opening, and the first light-transmitting window is positioned on the periphery of the exhaust fume outlet; a second light-transmitting window is formed in the position, corresponding to the lower end opening, of the bottom wall of the exhaust fume collecting hood, and the second light-transmitting window is located on the periphery of the exhaust fume inlet; the light collector is arranged at an opening in the upper end of the light guide pipe and is used for collecting light rays above the exhaust fume collecting hood into the light guide pipe; the diffuser is arranged at the opening in the lower end of the light guide pipe and is used for downwards scattering light in the light guide pipe so as to illuminate the space below the exhaust fume collecting hood; meanwhile, the inner side face of the light guide pipe is provided with a light reflecting layer capable of reflecting light collected into the light guide pipe to the light diffuser. Compared with the prior art, the energy consumption can be reduced while illumination is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of kitchen appliances, and in particular relates to a range hood. Background Art

[0002] Existing range hoods, such as the Chinese utility model patent "A range hood and its kitchen hood system" with patent number 202222839171.6 (authorization announcement number CN218884050U), include: a smoke hood with an air inlet on the front side; a smoke baffle, which is arranged in front of the air inlet in a manner such that its top edge can be deflected around a straight line extending left and right as a rotation axis, thereby opening or closing the air inlet; and also include: at least two lighting lamps arranged at intervals on the left and right, which are arranged in one of the following three positions: the back of the smoke baffle, or the front part of the smoke hood opposite to the smoke baffle, or when the smoke baffle is in the open state, in the space between the back of the smoke baffle and the corresponding front part of the smoke hood, and are arranged so that when the smoke baffle is in the open state, each lighting lamp can be turned on selectively or simultaneously, and each lighting lamp only illuminates the local area corresponding to its lower side.

[0003] Another example is the Chinese utility model patent No. 202121494344.4, "A rectifier plate assembly for a range hood and a range hood using the same" (authorization announcement No. CN216079950U). The rectifier plate assembly for the range hood includes a rectifier plate arranged under the air intake port of the smoke hood, a noise reduction structure is arranged on the back of the rectifier plate, and a lighting device is arranged on the front of the rectifier plate.

[0004] Currently, most range hoods use power to supply lamps to provide lighting, which consumes a certain amount of energy. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a range hood that can realize lighting and reduce energy consumption at the same time, in view of the current status of the prior art.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a range hood, comprising:

[0007] The smoke collecting hood comprises a top wall and a bottom wall, wherein the bottom wall is provided with a smoke inlet, and the top wall is provided with a smoke outlet;

[0008] It is characterized by also including:

[0009] The light guide tube is vertically arranged in the smoke collecting hood and has an upper opening and a lower opening;

[0010] A first light-transmitting window for light to pass through is provided on the top wall of the smoke collecting hood corresponding to the upper opening, and the first light-transmitting window is located at the periphery of the smoke outlet; a second light-transmitting window is provided on the bottom wall of the smoke collecting hood corresponding to the lower opening, and the second light-transmitting window is located at the periphery of the smoke inlet;

[0011] The range hood also includes:

[0012] A light collector is provided at the upper opening of the light guide tube and is used to collect the light above the smoke collecting hood into the light guide tube;

[0013] A diffuser is provided at the lower opening of the light guide tube, and is used to scatter the light in the light guide tube downward to illuminate the space below the smoke collecting hood;

[0014] At the same time, the inner side surface of the light guide tube is provided with a reflective layer which can reflect the light collected in the light guide tube to the diffuser.

[0015] In this way, the light above the smoke hood (such as natural light and light emitted by the kitchen ceiling light) can be collected into the light guide tube by the light collector, reflected to the diffuser through the reflective layer, and finally scattered through the diffuser to illuminate the space below the smoke hood, thereby achieving lighting; and the utility model can achieve lighting without using a power supply, thus saving energy.

[0016] In the present invention, the bottom wall is not limited to being located at the bottom of the smoke hood, and the bottom wall can be arranged horizontally or inclined, such as with the side of the smoke hood facing the user as the front side, and the bottom wall is arranged to be inclined downward from front to back.

[0017] To achieve light focusing, preferably, the light collector is a first lens that arches upward.

[0018] To achieve scattered light, preferably, the diffuser is a second lens that arches downward.

[0019] Furthermore, the first lens and / or the second lens is a plano-convex lens.

[0020] In the above solution, preferably, the first light-transmitting window is a through hole penetrating the top wall of the smoke hood, and the edge of the through hole is connected to the edge of the upper opening of the light guide tube; the first lens is located above the light guide tube.

[0021] Furthermore, a light-transmitting protective cover is provided above the first lens to surround the first lens, thereby protecting the first lens from being scratched by foreign objects and preventing the first lens from being polluted by oil smoke.

[0022] Preferably, the bottom wall of the smoke collecting hood is provided with a through hole penetrating the wall thickness and a light-transmitting plate is horizontally placed in the through hole as the above-mentioned second light-transmitting window;

[0023] The lower end of the light guide tube is located above the light-transmitting plate and the two are spaced apart;

[0024] The second lens is supported on the light-transmitting plate.

[0025] The light-transmitting plate can transmit light while protecting the second lens.

[0026] Furthermore, the light transmittance of the light-transmitting plate is arranged to be adjustable according to the intensity of the scattered light. In order to sense the intensity of the scattered light, a photosensitive material may be coated on the surface of the light-transmitting plate. In order to make the light transmittance of the light-transmitting plate adjustable, the light-transmitting plate may be made of dimming glass, wherein the dimming glass is a material that can switch between transparent and opaque states of glass by various methods such as electrical control, temperature control, light control, and voltage control. Taking the electrical control method as an example, the dimming glass is in an opaque state in the power-off state, and the dimming glass switches to a transparent state in the power-on state, and the transparency can be adjusted by changing the power-on voltage.

[0027] In the above schemes, preferably, an energy storage device is further included, which is arranged outside the light guide tube and is arranged to convert the unscattered light in the light guide tube into electrical energy for storage.

[0028] Preferably, the light guide is made of a deformable material and has the following three states:

[0029] In the initial state, its tube wall extends vertically;

[0030] In the first deformation state, the tube wall gradually bulges inward from both ends to the center, so that the diameter of the light guide tube is large at the ends and small in the center;

[0031] In the second deformation state, the tube wall gradually bulges outward from both ends to the center, making the end diameter of the light guide tube small and the center diameter large;

[0032] The reflective layer is a coating coated on the inner side of the light guide tube.

[0033] In this way, the deformation of the light guide can be controlled according to the amount of electrical energy stored in the energy storage device. For example, when the stored electrical energy is small, the light guide can be controlled to deform to the second deformation state, so that the light entering the light guide will be more concentrated in the light guide, thereby accelerating the input of light for energy storage; when the stored electrical energy is large, the light guide can be controlled to deform to the first deformation state, so that the light entering the light guide will be scattered as much as possible through the diffuser; when the electrical energy stored in the energy storage device is appropriate, the light guide can be controlled to return to the initial state.

[0034] Preferably, the diameters of the ends of the light guide tubes in the three states are consistent and are denoted as a;

[0035] In the first deformation state, the horizontal distance between the center of the tube wall of the light guide tube and the corresponding tube wall end of the light guide tube is ≤ a / 4;

[0036] In the second deformation state, the horizontal distance between the center of the tube wall of the light guide tube and the corresponding tube wall end of the light guide tube is ≤a / 4.

[0037] In this way, the deformation of the light pipe will not affect its lighting intensity.

[0038] Preferably, it also includes a detection member for detecting the amount of electrical energy stored in the energy storage device, a controller electrically connected to the output end of the detection member, and a driving member electrically connected to the output end of the controller, wherein the driving member acts on the light guide to drive the light guide to deform.

[0039] Compared with the prior art, the advantages of the present invention are: by arranging a light guide tube, a light collector, a diffuser and a reflective layer, the light above the smoke hood (such as natural light, light emitted by the kitchen ceiling light) can be collected into the light guide tube by the light collector, and reflected to the diffuser through the reflective layer, and finally scattered out through the diffuser to illuminate the space below the smoke hood, thereby realizing lighting; and the present invention can realize lighting without using a power supply, thus saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0041] Figure 2 It is a structural schematic diagram of another viewing angle of the embodiment of the utility model;

[0042] Figure 3 It is a cross-sectional view of an embodiment of the utility model (the light guide tube is in an initial state);

[0043] Figure 4 is a cross-sectional view of the light guide assembly in an initial state;

[0044] Figure 5 is a cross-sectional view of the light guide assembly in a first deformation state;

[0045] Figure 6 is a cross-sectional view of the light guide assembly in the second deformation state. DETAILED DESCRIPTION

[0046] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0047] like Figures 1 to 6 As shown, a preferred embodiment of a range hood of the utility model is shown, and the range hood comprises a fume collecting hood 1, a fan cover 6, a fan system 7 and a light guide component.

[0048] The smoke hood 1 has a top wall 11 and a bottom wall 12, a smoke inlet 120 is provided in the center of the bottom wall 12, and a smoke outlet 110 is provided in the center of the top wall 11. The fan cover 6 is arranged above the smoke hood 1 and is arranged in an inverted T shape between the smoke hood 1, and the bottom of the fan cover 6 is open and is opposite to and connected to the smoke outlet 110 on the smoke hood 1, and a smoke outlet is provided on the top of the fan cover 6. The fan system 7 is arranged in the fan cover 6, and is used to drive the oil smoke airflow to be sucked into the smoke hood 1 from the smoke inlet 120 and discharged from the smoke outlet. In this embodiment, the smoke hood 1, the fan cover 6 and the fan system 7 are all prior art, and are not described in detail here.

[0049] The light guide assembly comprises a light guide tube 2, a light collector 3, a light diffuser 4, and a protective cover 5.

[0050] The light guide 2 is vertically arranged in the smoke hood 1 and has an upper opening and a lower opening. The inner side of the light guide 2 is coated with a reflective layer, which can reflect the light entering the light guide 2 from the upper opening to the lower opening of the light guide 2. At the same time, the light guide 2 is a deformable material and has the following three states:

[0051] In the initial state, the tube wall extends vertically. For details, see Figure 3 , 4 ;

[0052] In the first deformation state, the tube wall gradually bulges inward from both ends to the center, making the end diameter of the light guide tube 2 larger and the center diameter smaller. For details, please refer to Figure 5 ;

[0053] In the second deformation state, the tube wall gradually bulges outward from both ends to the center, making the end diameter of the light guide 2 small and the center diameter large. For details, please refer to Figure 6 .

[0054] The diameter of the end of the light guide 2 is the same in the three states and is recorded as a; in the first deformation state, the horizontal distance between the center of the tube wall of the light guide 2 and the corresponding tube wall end of the light guide 2 is ≤ a / 4; in the second deformation state, the horizontal distance between the center of the tube wall of the light guide 2 and the corresponding tube wall end of the light guide 2 is ≤ a / 4. In this way, the light output intensity will not be affected in any state.

[0055] At the same time, a through hole penetrating the wall thickness is provided on the top wall 11 of the smoke hood 1 corresponding to the upper opening as the first light-transmitting window 111, the edge of the through hole is connected with the edge of the upper opening of the light guide 2, and the through hole is located at the periphery of the smoke outlet 110. A through hole penetrating the wall thickness is provided at the position corresponding to the lower opening on the bottom wall 12 of the smoke hood 1, and a light-transmitting plate for light to pass through is placed horizontally in the through hole as the second light-transmitting window 121, the second light-transmitting window 121 is located at the periphery of the smoke inlet 120, the second light-transmitting window 121 is located below the lower end of the light guide 2, and the two are arranged at intervals. In this embodiment, the light transmittance of the light-transmitting plate is arranged to be adjustable according to the intensity of the light passing through, such as when the light intensity is too large, the light transmittance of the light-transmitting plate is reduced; when the light intensity is small, the light transmittance of the light-transmitting plate is increased.

[0056] The light collector 3 is an upwardly arched first lens (a plano-convex lens), which is disposed above the upper opening of the light guide 2 and is used to collect light above the smoke hood 1 into the light guide 2. A light-transmitting protective cover 5 is disposed on the first lens to enclose the first lens therein.

[0057] The diffuser 4 is a second lens (a plano-convex lens) that arches downward, which is disposed at the lower opening of the light guide 2 and supported on the light-transmitting plate, and is used to scatter the light in the light guide 2 downward to illuminate the space below the smoke hood 1.

[0058] The range hood of this embodiment further comprises an energy storage device, a detection device, a controller and a driving device. The energy storage device is arranged outside the light guide tube 2 and is arranged to convert the unscattered light in the light guide tube 2 into electrical energy for storage. The detection device is used to detect the amount of electrical energy stored in the energy storage device. The input end of the controller is electrically connected to the output end of the detection device. The output end of the controller is electrically connected to the driving device. The driving device acts on the light guide tube 2 to drive the light guide tube 2 to deform (for example, the light guide tube 2 is made of shape memory alloy, and the driving device is a temperature regulating device for regulating the temperature of the light guide tube).

[0059] In this way, the deformation of the light guide 2 can be controlled according to the amount of electrical energy stored in the energy storage device. For example, when the stored electrical energy is small (the actual stored energy is reduced to 30% of the rated energy storage), the light guide 2 can be controlled to deform to the second deformation state, so that the light entering the light guide will be more concentrated in the light guide, thereby accelerating the input of light for energy storage; when the stored electrical energy is large (the actual stored energy is increased to 80% of the rated energy storage), the light guide can be controlled to deform to the first deformation state, so that as much light entering the light guide as possible will be scattered out through the diffuser; when the electrical energy stored in the energy storage device is appropriate (the actual stored energy is 50% of the rated amount), the light guide can be controlled to return to the initial state.

[0060] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations 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.

[0061] The term "vertical" is also used in the specification and claims of the present utility model, which means basically along the up and down direction, and is not limited to the vertical direction only, and can also be slightly inclined relative to the vertical direction.

[0062] The term "radial" is also used in the specification and claims of the present utility model, which means basically along the inward and outward direction, and is not limited to the radial direction passing through the center of the circle, and can also be slightly deviated from the radial direction.

Claims

1. A range hood, comprising: A smoke collecting hood (1) comprises a top wall (11) and a bottom wall (12); the bottom wall (12) is provided with a smoke inlet (120), and the top wall (11) is provided with a smoke outlet (110); Features Also included are: The light guide tube (2) is vertically arranged in the smoke collecting hood (1) and has an upper opening and a lower opening; A first light-transmitting window (111) for light to pass through is provided on the top wall (11) of the smoke collecting hood (1) at a position corresponding to the upper opening, and the first light-transmitting window (111) is located at the periphery of the smoke outlet (110); a second light-transmitting window (121) is provided on the bottom wall (12) of the smoke collecting hood (1) at a position corresponding to the lower opening, and the second light-transmitting window (121) is located at the periphery of the smoke inlet (120); The range hood also includes: A light collector (3) is arranged at the upper opening of the light guide tube (2) and is used to collect light above the smoke collecting hood (1) into the light guide tube (2); A diffuser (4) is arranged at the lower opening of the light guide tube (2) and is used to scatter the light in the light guide tube (2) downward to illuminate the space below the smoke collecting hood (1); At the same time, the inner side surface of the light guide tube (2) is provided with a reflective layer capable of reflecting the light collected in the light guide tube (2) to the diffuser (4).

2. The range hood according to claim 1, characterized in that: The light collector (3) is a first lens that arches upward.

3. The range hood according to claim 2, characterized in that: The diffuser (4) is a second lens that arches downward.

4. The range hood according to claim 3, characterized in that: The first lens and / or the second lens is a plano-convex lens.

5. The range hood according to claim 2, characterized in that: The first light-transmitting window (111) is a through hole penetrating the top wall (11) of the smoke collecting hood (1), and the edge of the through hole is connected to the edge of the upper opening of the light guide tube (2); the first lens is located above the light guide tube (2).

6. The range hood according to claim 5, characterized in that: It also comprises a light-transmitting protective cover (5), which is arranged above the first lens to surround the first lens.

7. The range hood according to claim 3, characterized in that: The bottom wall (12) of the smoke collecting hood (1) is provided with a through hole penetrating the wall thickness, and a light-transmitting plate is horizontally placed in the through hole as the above-mentioned second light-transmitting window (121); The lower end of the light guide tube (2) is located above the light-transmitting plate and the two are arranged at an interval; The second lens is supported on the light-transmitting plate.

8. The range hood according to claim 7, characterized in that: The light transmittance of the light-transmitting plate is arranged to be adjustable according to the intensity of the scattered light.

9. The range hood according to any one of claims 1 to 8, characterized in that: It also includes an energy storage device, which is arranged on the outside of the light guide tube (2) and is arranged to convert the unscattered light in the light guide tube (2) into electrical energy for storage.

10. The range hood according to claim 9, characterized in that: The light guide (2) is made of a deformable material and has the following three states: In the initial state, its tube wall extends vertically; In the first deformation state, the tube wall gradually arches inward from both ends to the center, so that the end diameter of the light guide tube (2) is large and the center diameter is small; In the second deformation state, the tube wall gradually arches outward from both ends to the center, so that the diameter of the light guide tube (2) is small at the ends and large at the center; The reflective layer is a coating coated on the inner side surface of the light guide tube (2).

11. The range hood according to claim 10, characterized in that: The diameter of the end of the light guide tube (2) is the same in the three states and is denoted as a; In the first deformation state, the horizontal distance between the center of the tube wall of the light guide tube (2) and the corresponding tube wall end of the light guide tube (2) is ≤ a / 4; In the second deformation state, the horizontal distance between the center of the tube wall of the light guide tube (2) and the corresponding tube wall end of the light guide tube (2) is ≤ a / 4.

12. The range hood according to claim 11, characterized in that: It also includes a detection member for detecting the amount of electric energy stored in the energy storage device, a controller electrically connected to the output end of the detection member, and a driving member electrically connected to the output end of the controller, wherein the driving member acts on the light guide (2) to drive the light guide (2) to deform.

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