Range hood capable of automatically adjusting smoke blocking cloud plate

Abstract

The utility model discloses a range hood capable of automatically adjusting a smoke blocking cloud plate. The range hood comprises a range hood main body, and the range hood main body comprises a shell and a smoke exhaust pipeline located above the shell; the bottom of the shell is provided with a smoke collecting cavity which is sunken upwards, and an adjustable smoke blocking cloud plate is arranged in the smoke collecting cavity. The adjustable cigarette blocking cloud plate comprises a fixed cloud plate, a movable cloud plate and an adjusting device for controlling the movable cloud plate to act; wherein the fixed cloud plate is hung at the bottom of the smoke collecting cavity through the fixing rod, the adjusting device is installed on the top face of the fixed cloud plate, the movable cloud plate is movably connected with the fixed cloud plate, and air inlet gaps are reserved between the fixed cloud plate and the inner edge of an opening in the bottom of the smoke collecting cavity and between the movable cloud plate and the inner edge of an opening in the bottom of the smoke collecting cavity. A control panel is further arranged on the front side face of the shell, and the adjusting device is controlled to drive the movable cloud plate to turn over according to the actual cooking fume amount. The range hood is simple in structure, and the angle is changed by controlling the smoke blocking cloud plate to rotate, so that the purpose of changing the position of a negative pressure area of the range hood is achieved, and the smoke gathering effect of the range hood is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to a range hood capable of automatically adjusting a smoke cloud shielding plate. Background Art

[0002] Range hoods are used to improve ventilation conditions in the kitchen and exhaust fumes and exhaust gases generated during cooking. They have become one of the indispensable kitchen appliances in modern families. Common range hoods include top suction and side suction types. Top suction range hoods are more and more widely used due to their advantages such as being neat, light and small in space. Traditional top suction range hoods usually include a fume hood and a fan housing located on the fume hood. The fan housing is equipped with a volute, an impeller and a motor for driving the impeller. The smoke baffle is installed at the entrance of the fume hood. When the fan of the range hood is in operation, negative pressure is formed on the back of the smoke baffle, so that the surrounding fume enters the interior of the range hood to achieve a good fume extraction effect. However, most of the smoke baffles on the market are similar to flat plates, and their smoke collection effect is poor. When the air volume is small, the fume cannot be completely absorbed by the range hood, and smoke leakage is likely to occur. Therefore, it is necessary to further optimize and improve the structure of the smoke baffle. Utility Model Content

[0003] The purpose of the utility model is to solve the deficiencies of the above-mentioned prior art and to provide a range hood capable of automatically adjusting the smoke cloud shielding plate.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a range hood capable of automatically adjusting a smoke cloud plate, comprising a range hood body, the range hood body comprising a shell, a smoke exhaust pipe located above the shell, and a fan fixedly installed inside the smoke exhaust pipe. The bottom of the shell is provided with a smoke collecting chamber recessed upward, the top of the smoke collecting chamber is provided with an air inlet connected to the smoke exhaust pipe, the inside of the smoke collecting chamber is provided with an adjustable smoke cloud plate, the adjustable smoke cloud plate comprises a fixed cloud plate, a movable cloud plate and an adjusting device for controlling the movement of the movable cloud plate, the fixed cloud plate is suspended at the bottom of the smoke collecting chamber by a fixing rod, the adjusting device is installed on the top surface of the fixed cloud plate, the movable cloud plate is movably connected with the fixed cloud plate, and an air inlet gap is left between the fixed cloud plate and the movable cloud plate and the inner edge of the bottom opening of the smoke collecting chamber; an oil smoke concentration detection device is installed at the inner bottom of the smoke collecting chamber, a control panel is provided on the front side of the shell, the oil smoke concentration detection device is connected to the control panel, and the control panel can control the adjusting device to drive the movable cloud plate to flip.

[0005] Furthermore, the adjusting device includes a driving motor, a rocker arm and a connecting rod, wherein the driving motor is fixedly mounted on the top surface of the fixed cloud plate, the rocker arm is L-shaped, and its rotating end is coaxially mounted on the output end of the driving motor, the swinging end of the rocker arm is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to a connecting seat fixed on the top surface of the movable cloud plate.

[0006] Furthermore, the connection between the movable cloud plate and the fixed cloud plate is hinge-type rotationally connected.

[0007] Furthermore, the output shaft of the driving motor is parallel to the center line of the rotation axis of the movable cloud plate.

[0008] Furthermore, a crossbeam is added in the middle of the bottom of the smoke collecting chamber, and the oil smoke concentration detection device is fixedly installed at the bottom of the crossbeam; the adjustable smoke cloud plates are provided with two groups, which are symmetrically arranged and located on the left and right sides of the crossbeam respectively, and the two groups of adjustable smoke cloud plates operate relatively independently.

[0009] Furthermore, the installation angle of the fixed cloud plate is flush with the plane of the bottom opening of the smoke collecting chamber; the flip angle of the movable cloud plate is from being in the same horizontal plane as the fixed cloud plate to being 90° upwardly perpendicular to the fixed cloud plate, forming a variable negative pressure area.

[0010] Furthermore, the oil fume concentration detection device includes an oil fume concentration detection sensor, which is fixedly installed on the bottom of the fixed cloud board and connected to the control panel through a signal.

[0011] Furthermore, a filter is fixedly installed at the air inlet.

[0012] Furthermore, an oil return cup is detachably mounted on the rear bottom of the shell.

[0013] Furthermore, a one-way check valve is fixedly installed at the upper air outlet of the smoke exhaust duct.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the utility model has a simple overall structure, and the smoke shielding cloud plate of the traditional T-type range hood is arranged into two sections. According to the actual oil fume concentration and through the adjustment device, one section of the smoke shielding cloud plate is controlled to rotate, and the angle of the cloud plate is changed to achieve the purpose of changing the position of the negative pressure area of ​​the range hood, thereby enhancing the smoke collection effect of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the adjustable smoke cloud shield in the utility model;

[0017] Figure 3It is a schematic diagram of the swing rod structure of the adjusting device in the utility model;

[0018] In the figure: 1. shell, 2. smoke exhaust duct, 3. smoke collecting chamber, 4. control panel, 5. adjustable smoke baffle cloud plate, 6. oil return cup, 7. one-way check valve, 8. crossbeam, 9. oil smoke concentration detection device, 10. air inlet gap, 51. fixed cloud plate, 52. movable cloud plate, 53. fixed rod, 54. driving motor, 55. swing rod, 56. connecting rod, 57. connecting seat, 58. rotating end, 59. swing end. DETAILED DESCRIPTION

[0019] It should be noted that, in the description of the present invention, terms such as "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 relational words determined only for the convenience of describing the structural relationships of the various components in the present invention, and do not specifically indicate that any component in the present invention must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as a limitation on the present invention.

[0020] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings:

[0021] Embodiment 1,

[0022] like Figures 1 to 3As shown, a range hood capable of automatically adjusting a smoke cloud shield is particularly suitable for a range hood with a double air suction port structure, comprising a range hood main body, wherein the range hood main body comprises a shell 1 and a smoke exhaust duct 2 fixedly installed above the shell 1, wherein the smoke exhaust duct 2 is composed of a plurality of sets of enclosures, a fan is fixedly installed inside thereof, and a one-way check valve 7 is installed at the top air outlet of the smoke exhaust duct 2; a smoke collecting chamber 3 recessed upward is provided at the bottom of the shell 1, an air inlet connected to the lower end of the smoke exhaust duct 2 is provided at the top of the smoke collecting chamber 3, a filter is installed at the air inlet; a crossbeam 8 is also fixedly installed at the bottom opening of the smoke collecting chamber 3, dividing the smoke collecting chamber 3 into two left and right air suction ports, which respectively correspond to the installation positions of the two stoves. A set of adjustable smoke cloud shields 5 are installed at each air inlet of the smoke collecting chamber 3, and the two sets of adjustable smoke cloud shields 5 are symmetrically arranged with the cross beam 8 as the center line; each set of adjustable smoke cloud shields 5 includes a fixed cloud board 51, a movable cloud board 52 and an adjusting device capable of controlling the movable cloud board 52 to flip, wherein the fixed cloud board 51 is fixedly suspended inside the smoke collecting chamber 3 by two fixing rods 53, and its installation position and angle are flush with the plane where the bottom opening of the smoke collecting chamber 3 is located One side edge of the movable cloud plate 52 is hinged to one side edge of the fixed cloud plate 51 close to the cross beam 8 through a hinge structure, and when the movable cloud plate 52 and the fixed cloud plate 51 are on the same plane, there is also a circle of air inlet gap 10 between the periphery of the movable cloud plate 52 and the fixed cloud plate 51 and the inner edge of the opening of the smoke collecting chamber 3. When the fan in the smoke exhaust duct 2 is running, a negative pressure space is formed on the upper part of the smoke shielding cloud plate, and the oil smoke is sucked into the exhaust duct 2 through the air inlet gap 10 for discharge.

[0023] The adjusting device is arranged above the fixed cloud plate 51 and the movable cloud plate 52, and includes a driving motor 54, a swing rod 55 and a connecting rod 56. The driving motor 54 is fixedly installed on the top surface of the fixed cloud plate 51, and the central axis of its output shaft is parallel to the rotation axis of the movable cloud plate 52; the swing rod 55 is an L-shaped structure, and its rotating end 58 is coaxially fixed on the output shaft of the driving motor 54, and swings with the rotation of the output shaft, and the swing end 59 of the swing rod 55 is hinged to one end of the connecting rod 56 through a pin shaft. The connecting rod 56 is a straight rod, and the other end of the connecting rod is hinged to a connecting seat 57 fixed on the top surface of the movable cloud plate 52 through a pin shaft. The swing of the swing rod 55 drives the movable cloud plate 52 to flip upward through the connecting rod 56. The flipping angle of the movable cloud plate 52 is adjustable, and its range is from being in the same plane with the fixed cloud plate 51 to being 90° upward and perpendicular to the fixed cloud plate 51.

[0024] A control panel 4 is fixedly installed on the front side of the housing 1; an oil fume concentration detection device 9 is fixedly installed on the bottom of the crossbeam 8. The detection device uses an oil fume concentration detection sensor and is connected to the control panel 4 through a signal. After the internal system of the control panel 4 receives the oil fume concentration signal, it transmits the signal to the drive motor 54 and controls its operation based on comparison and judgment, and controls the drive motor 54 to drive the swing rod 55 to rotate, thereby adjusting the upward flip angle of the movable cloud plate 52 in real time. Furthermore, the two drive motors 54 in the two sets of adjustable smoke cloud plates 5 are relatively independently controlled, and can be controlled to operate independently through the control panel 4, thereby controlling the relatively independent flipping of the movable cloud plates 52 on the left and right sides.

[0025] In order to prevent oil from dripping and contaminating, a detachable long strip oil return cup 6 is installed at the bottom of the rear side of the shell 1 to facilitate subsequent disassembly and cleaning.

[0026] The specific working principle is as follows: when the range hood is in working state, the oil fume concentration detection device 9 can monitor the amount of oil fume generated according to the actual cooking environment of the user, judge the amount of oil fume by comparing it with the preset value, transmit the signal to the drive motor 54, and automatically adjust the rotation amount and direction of the drive motor 54, thereby controlling the movable cloud plate 52 to flip upward at a certain angle from the initial state (the movable cloud plate 52 and the fixed cloud plate 51 are in the same plane). The greater the amount of oil fume, the greater the flipping angle of the movable cloud plate 52, and the larger and deeper the variable negative pressure area formed between the movable cloud plates 52 on both sides, thereby achieving the smoke extraction effect for high oil fume depth and ensuring the user's cooking experience; when the amount of oil fume is small, the drive motor 54 drives the movable cloud plate 52 to return to the initial state, and also achieves smoke extraction.

[0027] Embodiment 2,

[0028] A range hood capable of automatically adjusting a smoke shielding cloud plate, the overall structural features of which are roughly the same as the technical solution described in the above-mentioned embodiment 1, including a range hood body, and the difference in technical features between the two is that the oil fume concentration detection device 9 uses an oil fume concentration detection sensor, which is fixedly installed on the bottom of the fixed cloud plate 51, and is connected to the control panel 4 through a signal to monitor the amount of oil fume generated during the cooking process in real time.

[0029] Embodiment 3,

[0030] In the range hood capable of automatically adjusting the smoke cloud plate in the above-mentioned embodiment 1, the adjustable smoke cloud plate 5 is an auxiliary adjustment structure, and its movable cloud plate 52 and the fixed cloud plate 51 are two relatively independent cloud plate individuals, and the adjacent edges between the two are not connected to each other; the adjustment device also includes a driving motor 54, a rocker arm 55 and a connecting rod 56, the driving motor 54 is fixedly mounted on the top surface of the fixed cloud plate 51, the rotating end of the rocker arm 55 is coaxially fixed to the output shaft end of the driving motor 54, and the swinging end is hinged to one end of the connecting rod 56 through a pin shaft; the connecting rod 56 is a straight rod, and the other end of the connecting rod is fixedly connected to the connecting seat 57 on the top surface of the movable cloud plate 52; the operation of the driving motor 54 drives the rocker arm 55 to swing, thereby driving the movable cloud plate 52 to slide parallel to the fixed cloud plate 51 above it and to the right through the connecting rod 56, so as to adjust the variable negative pressure area and achieve the smoke collection effect for high oil smoke concentration. When the amount of oil smoke is small, the movable cloud plate 52 can be adjusted to be in a parallel extended state relative to the fixed cloud plate 51, so as to realize the normal smoke collection function of the traditional cloud plate type range hood.

[0031] The relevant technical features that have not been mentioned or described in detail in the above embodiments can be implemented by adopting or referring to the corresponding technical solutions in the prior art.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "set", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A range hood capable of automatically adjusting a smoke cloud shield, comprising a range hood body, the range hood body comprising a shell, a smoke exhaust duct located above the shell, a fan fixedly installed inside the smoke exhaust duct, characterized in that: The bottom of the shell is provided with a smoke collecting chamber which is recessed upward, and the top of the smoke collecting chamber is provided with an air inlet which is connected to a smoke exhaust duct, and the interior of the smoke collecting chamber is provided with an adjustable smoke shielding cloud plate, and the adjustable smoke shielding cloud plate includes a fixed cloud plate, a movable cloud plate and an adjusting device for controlling the movement of the movable cloud plate, the fixed cloud plate is suspended at the bottom of the smoke collecting chamber by a fixing rod, and the adjusting device is installed on the top surface of the fixed cloud plate, the movable cloud plate is movably connected with the fixed cloud plate, and an air inlet gap is left between the fixed cloud plate and the movable cloud plate and the inner edge of the bottom opening of the smoke collecting chamber; an oil fume concentration detection device is installed at the bottom inner side of the smoke collecting chamber, and a control panel is provided on the front side of the shell, and the oil fume concentration detection device is connected to the control panel, and the control panel can control the adjusting device to drive the movable cloud plate to flip.

2. The range hood capable of automatically adjusting the smoke cloud plate according to claim 1, characterized in that: The adjusting device includes a driving motor, a rocker arm and a connecting rod, wherein the driving motor is fixedly mounted on the top surface of the fixed cloud plate, the rocker arm is L-shaped, and its rotating end is coaxially mounted on the output end of the driving motor, the swinging end of the rocker arm is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to a connecting seat fixed on the top surface of the movable cloud plate.

3. The range hood capable of automatically adjusting the smoke cloud shield according to claim 2, characterized in that: The connection between the movable cloud plate and the fixed cloud plate is hinge-type rotationally connected.

4. The range hood capable of automatically adjusting the smoke cloud shield according to claim 2, characterized in that: The output shaft of the driving motor is parallel to the center line of the rotating shaft of the movable cloud plate.

5. The range hood capable of automatically adjusting the smoke cloud shield according to claim 1, characterized in that: A crossbeam is added in the middle of the bottom of the smoke collecting chamber, and the oil smoke concentration detection device is fixedly installed at the bottom of the crossbeam; the adjustable smoke cloud plates are provided with two groups, which are symmetrically arranged and located on the left and right sides of the crossbeam respectively, and the two groups of adjustable smoke cloud plates operate relatively independently.

6. The range hood capable of automatically adjusting the smoke cloud shield according to claim 1, characterized in that: The installation angle of the fixed cloud plate is flush with the plane of the bottom opening of the smoke collecting chamber; the flip angle of the movable cloud plate is from being in the same horizontal plane as the fixed cloud plate to being 90° upwardly perpendicular to the fixed cloud plate, forming a variable negative pressure area.

7. The range hood capable of automatically adjusting the smoke cloud shield according to claim 1, characterized in that: The oil fume concentration detection device comprises an oil fume concentration detection sensor, which is fixedly installed at the bottom of the fixed cloud board and is connected to the control panel through a signal.

8. The range hood capable of automatically adjusting the smoke cloud shield according to claim 1, characterized in that: A filter screen is fixedly installed at the air inlet.

9. The range hood capable of automatically adjusting the smoke cloud shield according to claim 1, characterized in that: An oil return cup is detachably mounted on the rear bottom of the shell.

10. The range hood capable of automatically adjusting the smoke cloud shield according to claim 1, characterized in that: A one-way check valve is fixedly installed at the upper air outlet of the smoke exhaust pipe.

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