Range hood

Abstract

The utility model relates to a range hood, which comprises a casing, the lighting device is arranged at the bottom of the machine shell; the lighting device comprises a lamp holder with a light outlet at the bottom; the light-emitting lamp panel is arranged in the lamp holder; the light reflecting plate is arranged in the lamp holder, located above the light emitting lamp panel and used for reflecting light emitted by the light emitting lamp panel downwards, the posture of the light reflecting plate in the lamp holder is adjustable, and the light emitting angle of reflected light at the light emitting opening of the lamp holder can be changed.

Description

Technical Field

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

[0002] A range hood is a kitchen appliance for purifying the kitchen environment. Range hoods generally include top-suction type and side-suction type. The side-suction type range hood uses the principle of eddy current air pressure to absorb most of the oil fumes close to the cooking range in an arc shape, which can reduce the adverse effects on human health. Moreover, since the power source is close to the cooking range, the suction effect of the power source is basically not reduced.

[0003] For a side-suction type range hood, the lighting lamp is generally installed on the side of the cavity. When turning on the light in the shutdown state, the smoke baffle needs to be opened to illuminate. However, users generally need to clean or prepare for cooking. When the user approaches from a distance, glare is likely to occur. For this reason, the Chinese utility model patent application with the application number 202022717611.1 (the authorized announcement number is: CN214370448U) discloses a range hood, which includes a housing and a panel arranged on the front side of the housing. An air inlet is opened on the panel. The range hood further includes a lighting device and a smoke baffle capable of flipping open or closing the air inlet. The lighting device is connected to the smoke baffle so that it can be in a first position when the smoke baffle is opened and can be in a second position when the smoke baffle is closed. In the first position, the lighting device is located outside the housing, and the irradiation direction of the lighting device faces downward; in the second position, the lighting device is located inside the housing to hide the lighting device and will not cause irritation to the user's eyes, and can improve the brightness at the position of the pot mouth, and the utilization rate of the light is high.

[0004] However, the lighting device of the range hood in the above patent application still has certain deficiencies: the irradiation angle range of the above lighting device is limited. Due to the relatively large flexibility in the installation height of the range hood, generally there is an adjustable height range of at least 50 to 100 mm (to facilitate matching different wall cabinets and user heights), and different hanging heights of the hanging brackets result in different lighting coverage angles when the user is cooking. For some machines, the light may not be able to cover the pot area, seriously affecting the user's cooking experience.

[0005] Therefore, the existing range hoods still need to be further improved. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is to provide a range hood with a wider light-emitting angle adjustment range and capable of adapting to the lighting needs of different hanging heights in view of the current situation of the prior art.

[0007] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0008] A range hood, comprising:

[0009] A housing;

[0010] A lighting device disposed at the bottom of the housing;

[0011] The lighting device includes:

[0012] A lamp holder having a light outlet at its bottom;

[0013] A light-emitting lamp panel disposed within the lamp holder;

[0014] A reflector disposed within the lamp holder and above the light-emitting lamp panel for reflecting the light emitted by the light-emitting lamp panel downward. The attitude of the reflector within the lamp holder is adjustable and can change the light-emitting angle of the reflected light at the light outlet of the lamp holder.

[0015] The "adjustable attitude" of the above-mentioned reflector can be understood as that the reflector can rotate and adjust relative to the lamp holder around a rotation center (point or rotation axis), or can move linearly relative to the lamp holder (such as linear movement in the front-back, left-right, or up-down directions), or a combination of the above rotation adjustment and linear movement adjustment.

[0016] The attitude of the reflector within the lamp holder of the lighting device can be adjusted, so as to change the light-emitting angle of the reflected light at the light outlet of the lamp holder. When actually installing the range hood, according to environmental factors such as the installation height of the user's home and the size of the cookware (input during installation and debugging), the above-mentioned light angle can be automatically or manually adjusted, so that the irradiation angle can just cover the cooking area, reducing the dazzling effect of the overflowing light on the line of sight, and also avoiding the situation that the user cannot see the cooking area clearly due to insufficient lighting, thereby improving the user experience.

[0017] To ensure the lighting effect, both the reflector and the light-emitting lamp panel are strip-shaped and their extending directions are the same.

[0018] To better reflect the light downward, the cross-section of the reflector is a circular arc structure concave upward.

[0019] To simplify the installation structure of the light-emitting lamp panel, at least two connecting arms extending downward and spaced along the length direction of the reflector are provided on the lower side wall of the reflector, and the light-emitting lamp panel is installed on each connecting arm. The above installation structure of the light-emitting lamp panel can enable the light-emitting lamp panel to adjust its attitude together with the reflector, so that the lighting effect of the reflected light of the reflector in different attitudes remains basically unchanged.

[0020] Considering that the cooktops at the bottom of the range hood are generally two burners arranged successively from left to right, in order to ensure the lighting effects on the left and right sides at the bottom of the range hood, the light-emitting lamp panel extends in the left-right direction, and the reflector is rotatably connected to the lamp holder in a manner that can rotate around an axis extending in the left-right direction.

[0021] In order to simplify the rotational connection structure between the reflector and the lamp holder, the left and right sides of the reflector respectively extend outward along its length direction with rotating pin shafts on the same straight line, and the reflector is rotatably connected to the lamp holder through the two rotating pin shafts.

[0022] Generally speaking, the attitude adjustment of the reflector can be manually adjusted by the user or adjusted by being driven by a driving mechanism. For the convenience of operation, a driving mechanism is further included and arranged on the lamp holder. The power output shaft of the driving mechanism is in transmission connection with the reflector, so as to drive the reflector to rotate relative to the lamp holder.

[0023] The driving mechanism can adopt an electric push rod or a driving device directly driven by a driving motor or a driving device in which the driving motor is in transmission cooperation with a transmission mechanism, etc. Preferably, the driving mechanism includes a driving motor, and the output shaft of the driving motor is in transmission connection with the reflector.

[0024] In order to adaptively adjust the attitude of the reflector of the lighting device according to the actual installation environment, a distance sensor for detecting the installation height of the casing is further included. The distance sensor is electrically connected to the driving mechanism and the controller of the range hood. The controller can control the driving mechanism to act according to the installation height signal of the casing transmitted by the distance sensor, so as to adjust the reflector to an attitude adapted to the installation height of the casing.

[0025] As an improvement, the distance sensor is arranged inside the lamp holder. It can be imagined that the distance sensor can also be arranged at other positions of the casing.

[0026] In order to facilitate the disassembly and assembly of the lighting device, the top of the lamp holder is detachably connected to the bottom of the casing through a buckle assembly. The buckle assembly can adopt a sliding fit manner between a buckle and a slot or a snap-fastening manner in which an elastic claw is matched with a hole position opened on a wall, etc.

[0027] In order to ensure the overall aesthetics of the range hood, especially to avoid the influence that the light leakage of the lighting device on the front side may cause irritation to the user's eyes, an oil cup is further arranged at the bottom of the casing. The lighting device is located at the rear side of the oil cup, and the lowest position of the lighting device is flush with the bottom wall of the oil cup or higher than the bottom wall of the oil cup, so that the lighting device is blocked by the oil cup and is not visible from the front side.

[0028] Generally, the rear side of the oil cup installed at the bottom of the casing is basically in contact with the wall. To facilitate the installation of the lighting device, the rear side of the oil cup has an installation concave area formed by recessing forward, and the lighting device is arranged in this installation concave area.

[0029] The lighting device of the range hood of the present application can be applicable to a side-suction range hood, a top-suction range hood or a thin-type range hood with a vertically extending air inlet cavity. Preferably, it is suitable for installation on a side-suction range hood. Specifically, the front side wall of the casing is inclined backward from top to bottom, an air inlet is formed on the front side wall of the casing, and a smoke baffle capable of rotating forward and backward relative to the casing to open and close the air inlet is arranged at the air inlet.

[0030] Compared with the prior art, the advantages of the present utility model are as follows: the attitude of the reflector in the lamp holder of the lighting device can be adjusted, so as to change the light-emitting angle of the reflected light at the light-emitting port of the lamp holder. When actually installing the range hood, the above-mentioned light angle can be automatically or manually adjusted according to the installation height of the user's home and the size of the cookware (input during installation and debugging), so that the irradiation angle can just cover the cooking area, reducing the dazzling effect of the overflowing light on the line of sight, and also avoiding the situation that the user cannot see the cooking area clearly due to insufficient lighting, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional structural schematic diagram of the range hood according to the embodiment of the present utility model;

[0032] Figure 2 It is a structural schematic diagram of the main body and the lighting device of the range hood according to the embodiment of the present utility model in a separated state;

[0033] Figure 3 It is a vertical sectional view of the range hood according to the embodiment of the present utility model cut along the front-rear direction (the reflector is in the first attitude);

[0034] Figure 4 It is a vertical sectional view of the range hood according to the embodiment of the present utility model cut along the front-rear direction (the reflector is in the second attitude);

[0035] Figure 5 It is an exploded view of the lighting device according to the embodiment of the present utility model;

[0036] Figure 6 It is a rear view of the components of the lighting device according to the embodiment of the present utility model in a separated state;

[0037] Figure 7 It is a three-dimensional structural schematic diagram of the oil cup according to the embodiment of the present utility model;

[0038] Figure 8This is a comparison diagram of the light-emitting angles of the lighting devices of the range hood according to the embodiments of the present invention at different installation heights. Detailed implementation manners

[0039] The present invention will be further described in detail below in conjunction with the embodiments with reference to the drawings.

[0040] In the description and claims of the present invention, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention. However, these terms are used here only for the purpose of convenient description and are determined based on the exemplary orientations shown in the drawings. Since the embodiments disclosed by the present invention can be arranged in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to the directions opposite to or consistent with the direction of gravity.

[0041] Figures 1-8 An exemplary embodiment of the range hood of the present invention is shown. The range hood includes a housing 10 and a centrifugal fan disposed inside the housing 10. The housing 10 generally includes a fan frame 11 and a smoke collecting hood 12 disposed at the bottom of the fan frame 11. The inner cavity of the fan frame 11 is communicated with the inner cavity of the smoke collecting hood 12. The front side wall of the smoke collecting hood 12 is inclined backward from top to bottom, and an air inlet 120 is formed thereon. External smoke can enter the smoke collecting hood 12 through the air inlet 120. The centrifugal fan (not shown) is disposed inside the fan frame 11. When the centrifugal fan operates, a negative pressure is generated, and external cooking fumes can be sucked into the smoke collecting hood 12 through the air inlet 120. An oil net is also disposed at the air inlet 120 of the smoke collecting hood 12 for filtering cooking fumes. An oil cup 20 is disposed at the bottom of the smoke collecting hood 12. The oil cup 20 is in a long strip shape extending left and right and is used for receiving the oil stains flowing down from the smoke collecting hood 12. A baffle 13 capable of deflecting forward and backward relative to the smoke collecting hood 12 is further disposed at the front part of the smoke collecting hood 12. The baffle 13 is connected to the main body of the smoke collecting hood 12 through a hinge movement mechanism and can specifically deflect forward to open the above-mentioned air inlet 120 and deflect backward to block and close the above-mentioned air inlet 120. The hinge movement mechanism for driving the baffle 13 to deflect can adopt a conventional hinge movement mechanism in the prior art and will not be described in detail herein.

[0042] The range hood of this embodiment further includes a lighting device 3. Among them, the lighting device 3 is disposed at the bottom of the smoke collecting hood 12. In an exemplary embodiment, it is disposed at the rear side of the oil cup 20. As Figure 7 shown, the rear part of the oil cup 20 of this embodiment has an installation area recessed forward, specifically formed by the rear side wall of the oil cup 20 recessing towards the inside of the oil cup 20. The shape of the installation area is in a long strip shape extending left and right, which is adapted to the shape of the lighting device 3 and can accommodate the whole of the lighting device 3 therein. AsFigure 3 and Figure 4 As shown in Figure 4 , the lowest position of the lighting device 3 (generally referring to the position of the lamp cover 32 at the light outlet 310 at the bottom of the lamp base 31) is flush with or slightly higher than the bottom wall of the oil cup 20. Thus, the lighting device 3 can be blocked by the oil cup 20 at the front side and is not visible from the front side, ensuring the overall aesthetics of the range hood. In particular, it avoids the influence that the light leakage of the lighting device 3 at the front side may cause irritation to the user's eyes.

[0043] For the convenience of disassembly and assembly of the oil cup 20, the tops of the left and right side walls of the oil cup 20 are both provided with inserts 22 that are folded inward toward the inside of the oil cup 20. The bottom of the smoke collecting hood 12 is usually provided with a connecting seat, and the connecting seat is provided with a socket that extends in the front-back direction for the above-mentioned inserts 22 to be inserted therein.

[0044] Generally, the rear side of the oil cup 20 installed at the bottom of the housing 10 is basically in contact with the wall. The installation concave area 21 on the rear side of the above-mentioned oil cup 20 can be understood as a relief concave area for placing the lighting device 3. The relief concave area is open at the rear side, and it is convenient for the oil cup 20 to be moved and disassembled in the front-back direction without disassembling the lighting device 3. It can be understood that in other alternative embodiments, the installation concave area 21 on the oil cup 20 is not limited to its opening at the rear side. For example, the installation concave area 21 can be open on the left or right side of the oil cup 20, or even a circular (enclosed on all sides) installation concave area 21 can be defined in the middle area of the oil cup 20 to install the lighting device 3.

[0045] The lighting device 3 is integrally in a long strip shape extending left and right, and it includes a lamp base 31, a lamp cover 32, a reflector 33, a driving motor 35, a distance sensor 36, and a light-emitting lamp board 34.

[0046] The lamp base 31 has an opening at the bottom, and this bottom opening is the light outlet 310. The lamp cover 32 is a light-transmitting cover and is arranged at the bottom opening of the lamp base 31. The reflector 33, the light-emitting lamp board 34, the driving motor 35, and the distance sensor 36 are all arranged inside the lamp base 31.

[0047] Both the reflector 33 and the light-emitting lamp board 34 are in a long strip shape, and the extending directions of the two are the same, that is, they both extend in the left-right direction. The reflector 33 and the light-emitting lamp board 34 extending in the left-right direction can ensure the lighting effects on the left and right sides at the bottom of the range hood. In order to better reflect the light downward, the cross-section of the reflector 33 is a circular arc structure that is concave upward. The reflector 33 generally uses an aluminum-plastic board reflector 33.

[0048] On the lower sidewall (i.e., the concave sidewall) of the reflector 33, there are at least two connecting arms 332 that extend downward and are spaced along the length direction of the reflector 33. The light-emitting lamp panel 34 is mounted on each connecting arm 332, specifically, it can be connected to the lower end of each connecting wall. The installation structure of the above-mentioned light-emitting lamp panel 34 enables the light-emitting lamp panel 34 to adjust its posture together with the reflector 33, so that the lighting effect of the reflected light of the reflector 33 in different postures remains basically unchanged.

[0049] On the left and right sides of the reflector 33 of this embodiment, rotating pin shafts 331 that extend outward along its length direction and are on the same straight line are respectively provided. The reflector 33 is rotatably connected to the lamp base 31 through the two rotating pin shafts 331. Specifically, the reflector 33 and the light-emitting lamp panel 34 of this embodiment can be driven by a driving mechanism to deflect forward and backward to adjust the posture. The driving mechanism includes a driving motor 35, and the output shaft of the driving motor 35 is connected to the rotating pin shaft 331 on one side of the reflector 33, thereby driving the reflector 33 to deflect forward and backward around the straight line where the rotating pin shaft 331 is located.

[0050] The distance sensor 36 of this embodiment is used to detect the installation height of the machine shell 10, and generally an infrared sensor is used. The distance sensor 36 is electrically connected to the driving mechanism and the controller of the range hood. The controller can control the driving mechanism to act according to the installation height signal of the machine shell 10 transmitted by the distance sensor 36, so as to adjust the reflector 33 to a posture adapted to the installation height of the machine shell 10. For example, when the range hood is installed at home, the above-mentioned lighting device 3 with adjustable light-emitting angle can automatically adjust the light angle according to the installation height of the user's home (generally the distance H from the lighting device 3 at the bottom of the machine shell 10 to the tabletop), the size of the cookware such as the diameter D, and the distance from the top edge of the cookware to the tabletop such as Figure 8 h1 in Figure 8 and the distance L1 from the center of the burner to the rear wall such as

[0051] Specifically refer to Figure 8 , after obtaining the size of the cookware such as the diameter D, the distance h1 from the top edge of the cookware to the tabletop, and the distance L1 from the center of the burner to the rear wall, the distance from the edge of the pot to the wall can be calculated: L0 = L1 + D / 2, and the height between the lighting device 3 and the edge of the pot is: h0 = H - h1. Then, according to the trigonometric function relationship, the lighting angle required for the current height can be calculated: arctan(L0 / h0).

[0052] Of course, the lighting device 3 of the range hood in this embodiment is not limited to automatically adjusting the light-emitting angle when the range hood is installed at home. The above-described method for automatically adjusting the light-emitting angle is also applicable to the adjustment process in which the bottom height position of the smoke collecting hood 12 changes during use. For example, for a lift range hood, the height position of the smoke collecting hood 12 is different in different cooking states (or in use and non-use states), and the distance sensor 36 can identify this. The controller can control the driving mechanism to act according to the installation height signal of the smoke collecting hood 12 transmitted by the distance sensor 36, so as to adjust the reflector 33 to a posture adapted to the height of the smoke collecting hood 12.

[0053] The distance sensor 36 in this embodiment is provided in the lamp holder 31, and its sensing end faces downward for detecting the installation height of the housing 10 downward. It can be imagined that the distance sensor 36 can also be provided at other positions of the housing 10.

[0054] The top of the lamp holder 31 in this embodiment is detachably connected to the bottom of the housing 10 through a snap component. Specifically, the top of the lamp holder 31 is provided with an upwardly extending elastic claw 311, and a hole 121 is formed in the bottom wall of the smoke collecting hood 12 for the above-mentioned elastic claw 311 to be snapped into from bottom to top and achieve limiting.

[0055] As used in the present invention, "driving connection" means that two components are directly connected or indirectly connected through a transmission mechanism.

Claims

1. A range hood, comprising: Housing (10); A lighting device (3) is arranged at the bottom of the housing (10); The lighting device (3) is characterized in that it comprises: A lamp holder (31) having a light outlet (310) at its bottom; A light-emitting lamp panel (34) is arranged in the lamp holder (31); A reflector (33) is arranged in the lamp holder (31) and located above the light emitting lamp panel (34), and is used to reflect the light emitted by the light emitting lamp panel (34) downward. The reflector (33) is adjustable in position in the lamp holder (31), and can change the light emission angle of the reflected light at the light outlet (310) of the lamp holder (31).

2. The range hood according to claim 1, characterized in that: The reflective plate (33) and the light-emitting lamp plate (34) are both in the shape of long strips, and their extension directions are consistent.

3. The range hood according to claim 2, characterized in that: The cross section of the reflective plate (33) is an upwardly concave arc-shaped structure.

4. The range hood according to claim 3, characterized in that: The lower side wall of the reflective plate (33) is provided with at least two connecting arms (332) extending downward and arranged at intervals along the length direction of the reflective plate (33), and the light emitting lamp panel (34) is mounted on each connecting arm (332).

5. The range hood according to claim 2, characterized in that: The light-emitting lamp panel (34) extends in the left-right direction, and the reflective plate (33) is rotatably connected to the lamp holder (31) around an axis extending left-right.

6. The range hood according to claim 5, characterized in that: The left and right sides of the reflector (33) are respectively provided with rotating pins (331) extending outwards in the same straight line along the length direction thereof, and the reflector (33) is rotatably connected to the lamp holder (31) via the two rotating pins (331).

7. The range hood according to claim 5, characterized in that: It also includes a driving mechanism disposed on the lamp holder (31), wherein a power output shaft of the driving mechanism is transmission-connected to the reflector (33), thereby driving the reflector (33) to rotate relative to the lamp holder (31).

8. The range hood according to claim 7, characterized in that: The driving mechanism comprises a driving motor (35), the output shaft of which is drivingly connected to the reflecting plate (33).

9. The range hood according to claim 7, characterized in that: It also includes a distance sensor (36) for detecting the installation height of the casing (10), the distance sensor (36) being electrically connected to the driving mechanism and a controller of the range hood, and the controller being capable of controlling the operation of the driving mechanism according to the installation height signal of the casing (10) transmitted by the distance sensor (36), thereby adjusting the reflective plate (33) to a posture that matches the installation height of the casing (10).

10. The range hood according to claim 9, characterized in that: The distance sensor (36) is arranged in the lamp holder (31).

11. The range hood according to any one of claims 1 to 10, characterized in that: The top of the lamp holder (31) is detachably connected to the bottom of the housing (10) via a snap-fit ​​assembly.

12. The range hood according to any one of claims 1 to 10, characterized in that: An oil cup (20) is also provided at the bottom of the housing (10), the lighting device (3) is located at the rear side of the oil cup (20), and the lowest position of the lighting device (3) is flush with or higher than the bottom wall of the oil cup (20), so that the lighting device (3) is blocked by the oil cup (20) and cannot be seen from the front side.

13. The range hood according to claim 12, characterized in that: The rear side of the oil cup (20) has a mounting recessed area (21) formed by being recessed forward, and the lighting device (3) is arranged in the mounting recessed area (21).

14. The range hood according to any one of claims 1 to 10, characterized in that: The front side wall of the casing (10) is inclined backward from top to bottom, an air inlet (120) is provided on the front side wall of the casing (10), and a smoke baffle (13) is provided at the air inlet (120) and can be rotated forward and backward relative to the casing (10) to open and close the air inlet (120).

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