Range hood

Abstract

The utility model relates to a range hood, which comprises: a smoke collecting hood, the interior of which is hollow to form a chamber, and the front side wall of the chamber is provided with an air inlet for external smoke to enter the chamber; the upper end of the smoke baffle is arranged at the air inlet in a front-back deflection mode, and the smoke baffle can deflect forwards to open the air inlet and deflect backwards to close the air inlet; the lighting lamp is arranged on the side, facing the air inlet, of the smoke barrier, and when the smoke barrier opens the air inlet, the lighting lamp is arranged to be capable of emitting light rays downwards; the sensor is used for detecting the opening angle of the smoke barrier; the controller is connected with the sensor; and the driving mechanism is connected with the controller, the output end of the driving mechanism acts on the illuminating lamp, and the driving mechanism is used for driving the illuminating lamp to deflect according to the signal detected by the sensor so as to adjust the illuminating angle. The LED lamp can improve the lighting effect.

Description

Technical Field

[0001] This utility model belongs to the field of kitchen appliance technology, specifically relating to a range hood. Background Technology

[0002] Existing range hoods rely on the operation of an internal fan system to create a negative pressure zone, allowing the kitchen fumes to escape outdoors under atmospheric pressure. To prevent fumes from escaping, a movable baffle is typically installed at the fumes inlet. A specific example is the Chinese invention patent application (application number 202310804283.4, publication number CN116734301A) entitled "Baffle Driving System, Baffle Driving Method, Range Hood, Storage Medium," which describes a baffle driving system connected to the baffle, including a motor; a transmission mechanism connected between the motor and the baffle, capable of converting the motor's rotational motion into a swinging motion of the baffle; and a hydraulic system connected to the transmission mechanism, used to provide resistance to the transmission mechanism to adjust the driving speed of the baffle.

[0003] The lighting of a range hood is usually achieved through lights (such as LED lights) installed on the hood. For models where the LED light is fixed to the back of the smoke baffle, the illumination angle of the LED light will generally remain fixed when the smoke baffle is opened to a predetermined angle.

[0004] The opening angle of the smoke baffle may vary depending on the model of the range hood. Some range hoods now offer adjustable smoke baffle angles, allowing users to adjust them to any angle based on preference, whether it obstructs their view, and the actual smoke extraction effect, thus meeting individual needs. However, changing the smoke baffle angle will also change the angle of the LED lights, potentially altering the lighting area below and resulting in poor illumination. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a range hood that can improve the lighting effect, based on the current state of the technology.

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

[0007] The smoke hood has a hollow interior forming a chamber, and the front side wall of the chamber has an air inlet for external smoke to enter the chamber.

[0008] The smoke baffle is located at the air inlet and its upper end can be deflected forward and backward. It can be deflected forward to open the air inlet and deflected backward to close the air inlet.

[0009] A lighting lamp is arranged on the side of the smoke baffle facing the air inlet, and when the smoke baffle opens the air inlet, the lighting lamp is arranged to emit light downward.

[0010] characterized in that it further comprises:

[0011] a sensor for detecting the opening angle of the smoke baffle;

[0012] a controller connected to the sensor;

[0013] a driving mechanism connected to the controller, and an output end of the driving mechanism acts on the lighting lamp to drive the lighting lamp to deflect and adjust the lighting angle according to the signal detected by the sensor.

[0014] Thus, the lighting angle of the lighting lamp can be automatically adjusted according to the opening angle of the smoke baffle, so that the lighting effect of the lighting lamp will not be affected by the different opening angles of the smoke baffle, thereby improving the lighting effect.

[0015] Preferably, the lighting lamp can rotate around the first axis extending left and right under the action of the driving mechanism.

[0016] More preferably, the lighting lamp can rotate around the second axis extending front and back under the action of the driving mechanism.

[0017] When the range hood is working, the double-head cooktop below it may only have the left side burner on fire for cooking, or only the right side burner on fire for cooking. In order to illuminate the burner on fire, preferably, the range hood further comprises:

[0018] an identifier for identifying the situation of the left and right burners on fire below the smoke hood, the identifier being connected to the controller, so that the driving mechanism can drive the lighting lamp to rotate and adjust the lighting angle according to the signal identified by the identifier.

[0019] Thus, when only one side of the burner is on fire for cooking, the driving mechanism drives the lighting lamp to rotate around the second axis extending front and back, so that the lighting lamp is inclined to the side of the burner on fire for concentrated illumination.

[0020] Preferably, the identifier is a camera.

[0021] In the above schemes, preferably, the lighting lamp comprises a plurality of lamp beads arranged side by side on the lower side of the PCB in the left and right directions, and the output end of the driving mechanism acts on the PCB. The connection between the PCB and the lamp beads is the same as the prior art to control the lighting work of the lamp beads.

[0022] Further, a lampshade is further included for the PCB with lamp beads to be constrained therein, and the bottom wall of the lampshade is a light-transmitting structure for light to pass through;

[0023] The driving mechanism is arranged in the lampshade and above the PCB.

[0024] Preferably, the driving mechanism comprises three telescopic mechanisms, i.e. a first telescopic mechanism, a second telescopic mechanism and a third telescopic mechanism, the lower ends of the first telescopic mechanism and the second telescopic mechanism are arranged on the left side and the right side of the PCB respectively and relatively close to one of the front and back edges of the PCB, and the lower end of the third telescopic mechanism is arranged on the center of the PCB and relatively close to the other of the front and back edges of the PCB.

[0025] The arrangement of the three telescopic mechanisms in the utility model can drive the PCB to rotate around the first axis extending leftward and rightward (e.g. the lower ends of the first telescopic mechanism and the second telescopic mechanism are retracted upward at the same time, and the lower end of the third telescopic mechanism is extended downward), and can also drive the PCB to rotate around the second axis extending frontward and back ward (e.g. the third telescopic mechanism is stationary, the lower end of the first telescopic mechanism is retracted upward, and the lower end of the second telescopic mechanism is extended downward).

[0026] Moreover, the lower ends of the three telescopic mechanisms are arranged in a triangle above the PCB, which can stably constrain the PCB so that the PCB can be maintained in a stable state after the angle adjustment.

[0027] Preferably, the lower end of the telescopic mechanism is spherical, and the upper side of the PCB is provided with a ball socket for inserting the lower end of the corresponding telescopic mechanism. In this way, the lower end of the telescopic mechanism can be rotatably constrained on the upper side of the PCB, so that the lower end of the telescopic mechanism can more stably drive the PCB to rotate.

[0028] The telescopic mechanism can adopt an existing electric push rod, and preferably comprises:

[0029] a motor, the rotating shaft of which extends downward, and the rotating shaft is provided with external threads;

[0030] a nut, which is sleeved on the outer periphery of the rotating shaft and is threadedly connected with the rotating shaft, and the bottom of the nut is provided with a connecting head as the lower end of the telescopic mechanism;

[0031] Meanwhile, the side of the nut is provided with a guide ring and an upward and downward extending guide column inserted in the guide ring, and the guide ring and the guide column are fixed relative to the nut and the motor shell respectively, so that the nut and the connecting head can move upward and downward under the drive of the rotating shaft of the motor.

[0032] Compared with the prior art, the advantages of the utility model lie in: through setting up the sensor for detecting the opening angle of the smoke baffle, the controller connected with the sensor, the driving mechanism connected with the controller, the output end of the driving mechanism acts on the lighting lamp, is used for driving the lighting lamp deflection according to the signal detected by the sensor and adjusts the lighting angle. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is the structure schematic diagram of the range hood of the utility model embodiment (the smoke baffle opens);

[0034] Figure 2 It is Figure 1 It is the sectional view of the range hood (the section is the vertical plane extending front and back);

[0035] Figure 3 It is Figure 1 It is the sectional view of the range hood (the section is the vertical plane extending left and right);

[0036] Figure 4 It is the structure schematic diagram of the lighting assembly of the utility model embodiment;

[0037] Figure 5 It is the sectional view of the lighting assembly of the utility model embodiment;

[0038] Figure 6 It is the three-dimensional exploded view of the lighting assembly of the utility model embodiment. DETAILED DESCRIPTION

[0039] The utility model is further described in detail below in combination with the embodiment of the accompanying drawings.

[0040] As Figures 1-6 Indicated, it is a preferred embodiment of the utility model of a range hood, and the range hood includes the smoke collecting cover 1, the smoke baffle 2 and the lighting assembly.

[0041] The smoke collecting cover 1 is hollow inside and forms the chamber 10, and the front side wall of the chamber 10 is provided with the air inlet 10a for the external flue gas to enter the chamber 10.

[0042] The upper end of the smoke baffle 2 is provided at the air inlet 10a and can be deflected forward and backward around the axis extending left and right, and can be deflected forward to open the air inlet 10a and deflected backward to close the air inlet 10a. And the smoke baffle 2 has a back face towards the air inlet 10a and a front face away from the air inlet 10a. In this embodiment, the smoke baffle 2 is driven to rotate by a push rod motor, and the opening angle of the smoke baffle 2 can be controlled by the Hall sensor of the push rod motor. This embodiment also includes a controller that obtains the current opening angle of the smoke baffle by obtaining the Hall sensor electrical signal of the push rod motor. At the same time, the side of the smoke baffle 2 of the embodiment towards the air inlet 10a is provided with a camera as an identifier 5, which is used to identify the fire situation of the left and right stove heads below the smoke hood 1, and the identifier 5 is connected to the controller.

[0043] The above lighting assembly includes a lampshade 6, a lighting lamp 3, a PCB board 31 and a driving mechanism 4. The lampshade 6 is provided on the side of the smoke baffle 2 towards the air inlet 10a, and the bottom wall of the lampshade 6 is a light-transmitting structure for light to pass through. The lighting lamp 3, the PCB board 31 and the driving mechanism 4 are arranged in the lampshade 6, and the lighting lamp 3 includes a plurality of lamp beads 30 arranged side by side on the lower side of the PCB board 31 in the left and right directions, which can emit light downward. The driving mechanism 4 is arranged above the PCB board 31 in the lampshade 6, and the driving mechanism 4 is connected to the controller, which is used to drive the PCB board 31 to deflect around the first axis extending left and right or around the second axis extending forward and backward to adjust the lighting angle according to the signals detected by the Hall sensor and the signals obtained by the identifier 5. Specifically, the driving mechanism 4 includes three telescopic mechanisms that can be telescoped up and down, which are a first telescopic mechanism 41, a second telescopic mechanism 42 and a third telescopic mechanism 43. The lower ends of the first telescopic mechanism 41 and the second telescopic mechanism 42 are arranged corresponding to the left and right sides of the PCB board 31 and relatively close to the rear edge of the PCB board 31, and the lower end of the third telescopic mechanism 43 is arranged corresponding to the center of the PCB board 31 and relatively close to the front edge of the PCB board 31. And the lower end of each telescopic mechanism is spherical, and the upper side of the PCB board 31 is provided with a ball socket 311 for the lower end of the corresponding telescopic mechanism to insert, please refer to Figure 5 、 6, so that the PCB 31 is driven to deflect by the extension and retraction of the lower ends of the telescopic mechanisms. For example, when the opening angle of the smoke baffle 2 changes, the controller receives the signal sent by the sensor and controls the lower ends of the first and second telescopic mechanisms to retract upward and the lower end of the third telescopic mechanism 43 to extend downward, so as to drive the PCB 31 and the lamp beads 30 to deflect around the first axis extending left and right to adjust the illumination angle. When the identifier 5 identifies that only the left or right single-side burner is fired, the controller receives the signal sent by the identifier 5 and controls the lower end of the first telescopic mechanism to retract upward and the lower end of the second telescopic mechanism to extend downward (or the lower end of the first telescopic mechanism to extend downward and the lower end of the second telescopic mechanism to retract upward), so as to drive the PCB 31 and the lamp beads 30 to deflect around the second axis extending front and back to concentrate the illumination on the fired burner side.

[0044] In the embodiment, each telescopic mechanism has the same structure and comprises a motor 44 and a nut 45. The motor 44 is fixed relative to the lampshade 6, and the rotating shaft 441 of the motor 44 extends downward and is provided with external threads. The nut 45 is sleeved on the outer periphery of the rotating shaft 441 and is threadedly connected with the rotating shaft 441, and the bottom of the nut 45 is provided with a spherical connecting head 451 as the lower end of the telescopic mechanism. Meanwhile, a guide ring 46 is arranged beside the nut 45, and an up-and-down extending guide column 47 is inserted into the guide ring 46. The guide ring 46 is fixed relative to the nut 45, and the guide column 47 is fixed relative to the shell of the motor 44, so that the nut 45 and the connecting head 451 can move up and down under the drive of the rotating shaft of the motor.

[0045] In the description and claims of the present application, terms used for indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc. are used to describe various example structural parts and elements of the present application, but these terms are used herein only for the purpose of convenient description and are determined based on the example orientation shown in the drawings. Since the disclosed embodiments of the present application can be arranged in different directions, these terms indicating directions are only used for description and should not be regarded as limitation, for example, "upper" and "lower" are not necessarily limited to the direction opposite or consistent with the direction of gravity.

Claims

1. An extractor hood, comprising: a hood (1) having a chamber (10) formed in the interior thereof, a front side wall of the chamber (10) being provided with an air inlet (10a) for external flue gas to enter the chamber (10); a baffle (2) having an upper end pivotally arranged at the air inlet (10a) and being able to pivot forward to open the air inlet (10a) and pivot backward to close the air inlet (10a); a lighting lamp (3) arranged on a side of the baffle (2) facing the air inlet (10a) and being able to emit light downward when the baffle (2) opens the air inlet (10a); characterized in that further comprising: a sensor for detecting an opening angle of the baffle (2); a controller connected to the sensor; a driving mechanism (4) connected to the controller and having an output end acting on the lighting lamp (3) for driving the lighting lamp (3) to pivot and adjust a lighting angle according to a signal detected by the sensor.

2. The hood according to claim 1, characterized in that: The lighting lamp (3) is able to rotate around a first axis extending leftward and rightward under the action of the driving mechanism (4).

3. The hood according to claim 2, characterized in that: The lighting lamp (3) is able to rotate around a second axis extending forward and backward under the action of the driving mechanism (4).

4. The hood according to claim 3, characterized in that: Further comprising: an identifier (5) for identifying whether a left or right cooking head below the hood (1) is ignited, the identifier (5) being connected to the controller so that the driving mechanism (4) is able to drive the lighting lamp (3) to rotate and adjust the lighting angle according to a signal identified by the identifier (5).

5. The hood according to claim 4, characterized in that: The identifier (5) is a camera.

6. The hood according to any one of claims 1-5, characterized in that: The lighting lamp (3) comprises a plurality of lamp beads (30) arranged side by side on a lower side surface of a PCB (31) in a leftward and rightward direction, and the output end of the driving mechanism (4) acts on the PCB (31).

7. The hood according to claim 6, characterized in that: Further comprising a lampshade (6) for confining the PCB (31) with the lamp beads (30) therein, and a bottom wall of the lampshade (6) being a light-transmitting structure for light to pass through; The driving mechanism (4) is arranged in the lampshade (6) above the PCB (31).

8. The hood according to claim 7, characterized in that: The driving mechanism (4) comprises three telescopic mechanisms, i.e., a first telescopic mechanism (41), a second telescopic mechanism (42), and a third telescopic mechanism (43), the lower ends of the first telescopic mechanism (41) and the second telescopic mechanism (42) being arranged on the left and right sides of the PCB (31) respectively and relatively close to one of the front and back edges of the PCB (31), and the lower end of the third telescopic mechanism (43) being arranged on the center of the PCB (31) and relatively close to the other of the front and back edges of the PCB (31).

9. The hood according to claim 8, characterized in that: The lower end of each telescopic mechanism is spherical, and the upper side surface of the PCB (31) is provided with a ball socket (311) for the lower end of the corresponding telescopic mechanism to be inserted into.

10. The hood according to claim 8, characterized in that: The telescopic mechanism comprises: a motor (44) having a rotating shaft (441) extending downward and being provided with an external thread on the rotating shaft (441). The nut (45) is sleeved on the outer periphery of the rotating shaft (441) and is threadedly connected with the rotating shaft (441), and the bottom of the nut (45) is provided with a connecting head (451) as the lower end of the telescopic mechanism; Meanwhile, the side of the nut (45) is provided with a guide ring (46) and an up-and-down extending guide column (47) inserted in the guide ring (46), the guide ring (46) and the guide column (47) are respectively fixed opposite to the nut (45) and the motor (44) shell, so that the nut (45) and the connecting head (451) can move up and down under the driving of the motor rotating shaft.

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