A range hood and control method thereof

Abstract

The present invention discloses a range hood and a control method thereof, wherein the range hood comprises a fume collecting hood, the top of the fume collecting hood is connected to a box body, an air guide box is arranged in the box body, an air inlet plate for controlling the air inlet direction is arranged at the air inlet of the bottom of the air guide box, an eccentric air inlet hole is arranged on the air inlet plate, and the air inlet plate is rotated to turn the air inlet hole toward the direction with a large amount of oil pollution. The range hood of the present invention is provided with a rotatable air inlet plate, and when the amount of oil smoke generated by two stoves differs greatly, the air inlet hole of the air inlet plate is turned toward the direction with a large amount of oil smoke, thereby reducing the energy waste of the fan assembly and improving the extraction efficiency of the range hood.

Description

Technical Field

[0001] The invention relates to a range hood, and in particular to a range hood and a control method thereof. Background Art

[0002] Range hoods have become an essential appliance in the kitchen, removing the greasy feeling of the past. The commonly used top-mounted range hoods now have only one air inlet corresponding to the two burners of the gas stove below.

[0003] During cooking, people usually only use one burner or one burner for cooking and the other burner for frying. This results in the two burners producing inconsistent and large differences in the amount of oil smoke. Commonly used range hoods often do not adjust the air inlet according to the amount of oil smoke produced. When the amount of oil smoke produced is very different, they will still provide the same suction to the left and right burners, which results in energy waste in suction. Summary of the invention

[0004] The object of the present invention is to provide a range hood and a control method thereof, so as to solve the technical problem of low smoke extraction efficiency of existing range hoods.

[0005] To achieve the above-mentioned purpose, the specific technical scheme of a range hood and a control method thereof of the present invention is as follows:

[0006] A range hood comprises a smoke collecting hood, wherein the top of the smoke collecting hood is connected to a box body, an air guide box is arranged in the box body, an air inlet plate for controlling the air inlet direction is arranged at the air inlet of the bottom of the air guide box, an eccentric air inlet hole is arranged on the air inlet plate, and the air inlet plate is rotated to direct the air inlet hole toward the direction with a large amount of oil stains.

[0007] Furthermore, a fan assembly is provided in the box body, and an air guide box sleeve is provided at the lower part of the fan assembly.

[0008] Furthermore, the fan assembly includes a volute, the top of the air guide box is open, and the opposite sides of the air guide box in contact with the volute are respectively provided with flanges facing the volute, and the air guide box is sleeved on the volute through the flanges.

[0009] Furthermore, the air inlet plate includes a side wall and a bottom wall, the air inlet hole is eccentrically arranged on the bottom wall, the bottom end of the side wall is fixedly connected to the bottom wall, the side wall has a cylindrical structure, the top end of the side wall is folded outward to form an outer edge, the air inlet of the air guide box is folded inward to form an overlapping edge, the side wall is sleeved on the air inlet of the air guide box, and the outer edge is placed above the overlapping edge.

[0010] Furthermore, the air inlet disc also includes a top wall, which is an annular structure. The inner ring of the top wall is fixedly connected to the bottom wall at the air inlet hole, and the outer ring of the top wall is fixedly connected to the top of the side wall, so that the air inlet disc forms a hollow structure.

[0011] Furthermore, a connecting rod is provided on the top surface of the air inlet disc, the top end of the connecting rod is fixed on the driving device, and the driving device is fixed on the bottom surface of the fan assembly.

[0012] Furthermore, the driving device includes a shell, a driving motor is arranged in the shell, a driving wheel is arranged on the driving shaft of the driving motor, a connecting rod passes through the bottom surface of the shell and is rotatably fixed in the shell, a driven wheel is arranged on the connecting rod, and the driving wheel is meshed with the driven wheel.

[0013] Furthermore, the driving device also includes a telescopic rod, one end of which is fixed to the upper wall of the shell, the bottom end of the telescopic rod is connected to a lifting plate, the top end of the connecting rod is rotatably fixed to the bottom surface of the lifting plate, the driving motor is arranged on one side of the connecting rod, and the driving motor is fixed to the lifting plate.

[0014] Furthermore, it also includes two groups of oil fume detection devices, which are respectively arranged at the two ends of the smoke collecting hood and are used to detect the amount of oil fume in different areas. The oil fume detection devices are electrically connected to the controller respectively.

[0015] Furthermore, each group of oil fume detection devices includes a light emitter and a light receiver arranged relatively to each other. The light emitter emits light, the light receiver receives the light signal and converts it into an electrical signal, the light receiver is electrically connected to the controller, and the controller obtains the electrical signals of the two groups of light receivers respectively.

[0016] A control method for a range hood, the range hood comprising an air guide box, an air inlet plate for controlling the air inlet direction is provided at the air inlet at the bottom of the air guide box, and an eccentric air inlet hole is provided on the air inlet plate, the control method comprising:

[0017] Turn the air inlet plate so that the air inlet hole faces the direction with more oil stains.

[0018] Furthermore, the method also includes an oil fume detection step, in which the distribution of the oil fume amount is obtained by an oil fume detection device.

[0019] A range hood and a control method thereof of the present invention have the following advantages:

[0020] The range hood described in the present invention is provided with a rotatable air inlet disk. When the amount of oil smoke generated by two stoves differs greatly, the air inlet holes of the air inlet disk are turned toward the direction with the larger amount of oil smoke, thereby reducing energy waste of the fan assembly and improving the exhaust efficiency of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the range hood of the present invention;

[0022] Figure 2 is a cross-sectional view of the range hood of the present invention;

[0023] Figure 3 An exploded view of the range hood of the present invention;

[0024] Figure 4 is a cross-sectional view of the driving device of the present invention;

[0025] Figure 5 It is a cross-sectional view of the range hood of the present invention when the air inlet is mostly on the right side;

[0026] Figure 6 It is a cross-sectional view of the range hood of the present invention when the air inlet is mostly on the left side;

[0027] Figure 7 It is a cross-sectional view of the range hood of the present invention when air is simultaneously introduced from both sides;

[0028] Figure 8 for Figure 7 Enlarged view of point A in the middle.

[0029] Explanation of the numbers in the figure: 1. Box body; 2. Fan assembly; 3. Driving device; 31. Housing; 32. Driving motor; 33. Driving wheel; 34. Driven wheel; 35. Lifting plate; 36. Telescopic rod; 4. Connecting rod; 5. Air guide box; 51. Overlap edge; 52. Flanged edge; 6. Air inlet plate; 61. Air inlet hole; 62. Top wall; 63. Bottom wall; 64. Side wall; 65. Outer edge; 7. Smoke hood; 71. Air inlet; 8. Fume detection device; 81. Light transmitter; 82. Light receiver. DETAILED DESCRIPTION

[0030] In order to better understand the purpose, structure and function of the present invention, a range hood and a control method thereof of the present invention are further described in detail below with reference to the accompanying drawings.

[0031] like Figure 1-Figure 3 As shown, the present invention provides a range hood, comprising a smoke collecting hood 7 with an air inlet 71, the top of the smoke collecting hood 7 is connected to a box body 1, an air guide box 5 is arranged in the box body 1, an air inlet plate 6 for controlling the air inlet direction is arranged at the air inlet at the bottom of the air guide box 5, an eccentric air inlet hole 61 is arranged on the air inlet plate 6, and the air inlet plate 6 is rotated to turn the air inlet hole 61 toward the direction with a large amount of oil stains. A gas stove is arranged below the smoke collecting hood 7, and two burners are arranged on the gas stove. When the amount of oil smoke generated by the left and right burners differs greatly, the range hood still generates the same suction force in the direction of the two burners, resulting in energy waste of the fan assembly 2. By setting a rotatable air inlet plate 6, when the amount of oil smoke generated by the two burners differs greatly, the air inlet hole 61 of the air inlet plate 6 is turned toward the direction with a large amount of oil smoke, thereby reducing the energy waste of the fan assembly 2 and improving the smoke extraction efficiency of the range hood.

[0032] A fan assembly 2 is provided in the housing 1, and an air guide box 5 is sleeved at the lower part of the fan assembly 2. The fan assembly 2 includes a volute, an impeller and a motor. The impeller is accommodated in the volute, and the motor is fixed to a side plate of the volute and connected to the impeller in the volute. The top of the air guide box 5 is open, and the sides of the air guide box 5 opposite to the volute are respectively provided with flanges 52 facing the volute, and the air guide box 5 is sleeved on the volute through the flanges 52.

[0033] In order to reduce the weight of the air inlet plate 6, the air inlet plate 6 has a hollow columnar structure. The air inlet plate 6 includes a side wall 64 and a bottom wall 63. The bottom wall 63 is a circular plate. The air inlet hole 61 is eccentrically arranged on the bottom wall 63. The bottom end of the side wall 64 is fixedly connected to the bottom wall 63. The side wall 64 is a cylindrical structure. The middle part of the side wall 64 is concave. The top end of the side wall 64 is folded outward to form an outer edge 65. The air inlet of the air guide box 5 is folded inward to form an overlapping edge 51. The side wall 64 is sleeved at the air inlet, and the outer edge 65 is placed above the overlapping edge 51, so that the air inlet plate 6 and the air guide box 5 form a closed air duct structure.

[0034] In order to enhance the strength of the air inlet disk 6, the air inlet disk 6 also includes a top wall 62, which is an annular structure. The inner ring of the top wall 62 is fixedly connected to the bottom wall 63 at the air inlet hole 61, and the outer ring of the top wall 62 is fixedly connected to the top of the side wall 64, so that the air inlet disk 6 forms a hollow structure.

[0035] In order to make the air inlet disc 6 rotate automatically with the amount of oil smoke, a connecting rod 4 is provided on the top surface of the air inlet disc 6. The top end of the connecting rod 4 is fixed on the driving device 3, and the driving device 3 is fixed on the bottom surface of the fan assembly 2.

[0036] like Figure 4 As shown, the driving device 3 includes a shell 31, a driving motor 32 is arranged in the shell 31, a driving wheel 33 is arranged on the driving shaft of the driving motor 32, a connecting rod 4 passes through the bottom surface of the shell 31 and is rotatably fixed in the shell 31, a driven wheel 34 is arranged on the connecting rod 4, and the driving wheel 33 is meshed with the driven wheel 34 to drive the air inlet disc 6 to rotate.

[0037] like Figure 5-Figure 6 As shown, when the right stove produces more oil smoke, the drive motor 32 rotates to drive the air inlet 61 to turn to the top of the right stove; when the left stove produces more oil smoke, the drive motor 32 rotates to drive the air inlet 61 to turn to the top of the left stove; Figure 7 As shown, when two stoves are used at the same time, the driving motor 32 rotates to drive the air inlet 61 to be placed between the two stoves.

[0038] When two stoves are used at the same time, in order to increase the air intake, the driving device 3 further includes a telescopic rod 36, one end of which is fixed to the upper wall of the housing 31, and the bottom end of the telescopic rod 36 is connected to a lifting plate 35, the top end of the connecting rod 4 is rotatably fixed to the bottom surface of the lifting plate 35, and the driving motor 32 is arranged on one side of the connecting rod 4, and the driving motor 32 is fixed on the lifting plate 35. Figure 8 As shown, when two stoves are used at the same time, the telescopic rod 36 is shortened to make the air inlet plate 6 rise, thereby forming a gap for oil smoke to pass through between the side wall 64, the outer edge 65 and the flange 52, so as to increase the amount of smoke when the two stoves are used. The telescopic rod 36 can be an electric push rod, a cylinder, etc.

[0039] In order to detect the amount of oil smoke on both sides, the range hood also includes two groups of oil smoke detection devices 8, which are respectively arranged at both ends of the smoke collecting hood 7 to detect the amount of oil smoke in different areas. The oil smoke detection devices 8 are electrically connected to the controller respectively.

[0040] Each group of oil smoke detection devices 8 includes a light emitter 81 and a light receiver 82 that are relatively arranged. The light emitter 81 emits light, and the light receiver 82 receives the light signal and converts it into an electrical signal. The light receiver 82 is electrically connected to the controller. The controller obtains the electrical signals of the two groups of light receivers 82 respectively, and turns the air inlet 61 to the side where the electrical signal received by the light receiver 82 is larger.

[0041] The present application also provides a control method for a range hood, the range hood comprising an air guide box 5, an air inlet plate 6 for controlling the air inlet direction is provided at the air inlet at the bottom of the air guide box 5, and an eccentric air inlet hole 61 is provided on the air inlet plate 6, the control method comprising:

[0042] The air inlet plate 6 is rotated so that the air inlet hole 61 faces the direction with a large amount of oil stains.

[0043] The method further includes an oil fume detection step, in which the distribution of the oil fume amount is obtained through an oil fume detection device 8.

[0044] The range hood is provided with a rotatable air inlet disk 6. When the amount of oil smoke generated by two stoves differs greatly, the air inlet hole 61 of the air inlet disk 6 is turned to the direction with larger oil smoke amount, thereby reducing the energy waste of the fan assembly 2 and improving the exhaust efficiency of the range hood.

[0045] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A range hood, comprising a fume hood (7), the top of which is connected to a box (1), characterized in that: An air guide box (5) is provided in the box body (1), an air inlet plate (6) for controlling the air inlet direction is provided at the air inlet at the bottom of the air guide box (5), an eccentric air inlet hole (61) is provided on the air inlet plate (6), and the air inlet plate (6) is rotated to direct the air inlet hole (61) toward a direction with a large amount of oil stains; A fan assembly (2) is arranged in the box body (1); The fan assembly (2) comprises a volute, the top of the air guide box (5) is open, and the sides of the air guide box (5) opposite to the volute in contact with the volute are respectively provided with flanges (52) facing the volute, and the air guide box (5) is sleeved on the volute through the flanges (52); The air inlet plate (6) comprises a side wall (64) and a bottom wall (63); the air inlet hole (61) is eccentrically arranged on the bottom wall (63); the bottom end of the side wall (64) is fixedly connected to the bottom wall (63); the side wall (64) is a cylindrical structure; the top end of the side wall (64) is folded outward to form an outer edge (65); the air inlet of the air guide box (5) is folded inward to form an overlapping edge (51); the side wall (64) is sleeved at the air inlet of the air guide box (5); and the outer edge (65) is placed above the overlapping edge (51); A connecting rod (4) is provided on the top surface of the air inlet plate (6), the top end of the connecting rod (4) is fixed on the driving device (3), and the driving device (3) is fixed on the bottom surface of the fan assembly (2); The driving device (3) further comprises a telescopic rod (36); When the two stoves are used simultaneously, the telescopic rod (36) is shortened, causing the air inlet plate (6) to rise, thereby forming a gap between the side wall (64), the outer edge (65) and the flange (52) for oil smoke to pass through, thereby increasing the amount of smoke when the two stoves are used.

2. The range hood according to claim 1, characterized in that: The air guide box (5) is sleeved on the lower part of the fan assembly (2).

3. The range hood according to claim 1, characterized in that: The air inlet disk (6) further comprises a top wall (62), which is an annular structure, wherein the inner ring of the top wall (62) is fixedly connected to the bottom wall (63) at the air inlet hole (61), and the outer ring of the top wall (62) is fixedly connected to the top end of the side wall (64), so that the air inlet disk (6) forms a hollow structure.

4. The range hood according to claim 3, characterized in that: The driving device (3) comprises a housing (31), a driving motor (32) is arranged in the housing (31), a driving wheel (33) is arranged on the driving shaft of the driving motor (32), a connecting rod (4) passes through the bottom surface of the housing (31) and is rotatably fixed in the housing (31), a driven wheel (34) is arranged on the connecting rod (4), and the driving wheel (33) is meshed with the driven wheel (34).

5. The range hood according to claim 4, characterized in that: One end of the telescopic rod (36) is fixed to the upper wall of the housing (31); the bottom end of the telescopic rod (36) is connected to the lifting plate (35); the top end of the connecting rod (4) is rotatably fixed to the bottom surface of the lifting plate (35); the driving motor (32) is arranged on one side of the connecting rod (4); and the driving motor (32) is fixed on the lifting plate (35).

6. The range hood according to claim 1, characterized in that: It also includes two groups of oil fume detection devices (8), which are respectively arranged at two ends of the fume collecting hood (7) and are used to detect the amount of oil fume in different areas. The oil fume detection devices (8) are respectively electrically connected to the controller.

7. The range hood according to claim 6, characterized in that: Each group of oil smoke detection devices (8) comprises a light emitter (81) and a light receiver (82) arranged opposite to each other. The light emitter (81) emits light, and the light receiver (82) receives the light signal and converts it into an electrical signal. The light receiver (82) is electrically connected to a controller, and the controller obtains the electrical signals of the two groups of light receivers (82) respectively.

Images