A range hood and a control method thereof

Abstract

The application discloses an oil fume extractor and a control method thereof. The oil fume extractor comprises a housing assembly with a smoke collecting cavity, an air inlet opening communicated with the smoke collecting cavity is formed on the front surface of the housing assembly; a wind cabinet mechanism is arranged on the top of the housing assembly and communicated with the smoke collecting cavity; a wind guide assembly is movably arranged in the smoke collecting cavity, and the lower end of the wind guide assembly is movably connected with the bottom of the housing assembly; and a smoke gathering mechanism is movably arranged at the air inlet opening and movably connected with the upper end of the wind guide assembly. When the smoke gathering mechanism opens the air inlet opening, the wind guide assembly can be turned backward, and when the smoke gathering mechanism closes the air inlet opening, the wind guide assembly can be turned forward. The oil fume extractor can improve the smoke suction effect, and reduce the resonance and noise caused by the vortex of the oil fume in the housing assembly.

Description

Technical Field

[0001] This invention relates to the field of range hood technology, and in particular to a range hood and its control method. Background Technology

[0002] The shell thickness of a conventional ultra-thin wall-mounted range hood is less than 140mm. Compared with the traditional side-draft range hood with a shell thickness of 350mm, the shell and air intake channel of the ultra-thin wall-mounted range hood are significantly reduced. However, the reduced air intake channel size leads to a weakening of the ability to extract and exhaust fumes. As a result, the fumes cannot be exhausted, the air quality in the kitchen deteriorates, and this can harm people's physical and mental health.

[0003] The conventional approach to solving the above problems is to add a flip-up smoke collection plate. When the smoke collection plate is opened, it increases the smoke collection distance, thereby improving the smoke extraction effect. However, if the smoke collection distance exceeds 350mm when the smoke collection plate is open, it can easily obstruct the user's view while cooking and cause them to bump their heads; if the smoke collection distance is less than 350mm, there will be oil smoke overflow. Therefore, the main fan speed is usually increased to increase the exhaust volume and prevent oil smoke overflow, but this also increases the operating noise of the range hood, reducing the auditory comfort of using the product. Summary of the Invention

[0004] This invention aims to at least partially address one of the problems existing in the prior art. To this end, this invention proposes a range hood that improves smoke extraction efficiency and reduces resonance and increased noise caused by eddies generated within the outer casing of cooking fumes. This invention also provides a control method for the range hood.

[0005] The range hood described above achieves its function through the following technical solution:

[0006] A range hood includes: a housing assembly having a smoke collection chamber, with an air inlet communicating with the smoke collection chamber on the front of the housing assembly; a fan housing mechanism disposed on the top of the housing assembly and communicating with the smoke collection chamber; an air guide assembly disposed within the smoke collection chamber and movable back and forth, with its lower end movably connected to the bottom of the housing assembly; and a smoke collection mechanism movably disposed at the air inlet and movably connected to the upper end of the air guide assembly, wherein when the smoke collection mechanism opens the air inlet, it can cause the air guide assembly to flip backward, and when the smoke collection mechanism closes the air inlet, it can cause the air guide assembly to flip forward.

[0007] In some embodiments, the air guide assembly includes an air guide plate, two mounting brackets, and two connecting rods. The left and right sides of the lower end of the air guide plate are movably connected to the bottom of the housing assembly through the two mounting brackets, and the left and right sides of the upper end of the air guide plate are movably connected to the smoke collection mechanism through the two connecting rods.

[0008] In some embodiments, the smoke collection mechanism includes a drive assembly and a flap assembly. The upper and lower ends of the flap assembly are movably connected to the upper ends of the outer shell assembly and the air guide assembly, respectively. The drive assembly is installed in the smoke collection chamber and its output end is movably connected to the back of the flap assembly. It is used to drive the flap assembly to open or close the air inlet. When the flap assembly opens or closes the air inlet, it can rotate the air guide assembly backward and forward in conjunction with the air inlet.

[0009] In some embodiments, the smoke collection mechanism further includes an oil mesh assembly, which is movably disposed behind the flap assembly, and the flap assembly is movably connected to the upper end of the air guide assembly through the oil mesh assembly.

[0010] In some embodiments, the smoke collection mechanism includes a power component and a smoke guiding component. The smoke guiding component is movably disposed at the air inlet and is linked to the upper end of the air guiding component. The power component is installed in the smoke collection chamber and its output end is movably connected to the smoke guiding component. It is used to drive the smoke guiding component to move up to open or down to close the air inlet. When the smoke guiding component moves up and down, it can drive the air guiding component to flip backward and forward.

[0011] In some embodiments, the smoke collection mechanism further includes two guide rail assemblies, the left and right ends of which are slidably connected to the outer shell assembly via the two guide rail assemblies.

[0012] In some embodiments, the smoke collection mechanism includes a drive assembly, a flap assembly, and a smoke guide assembly. The smoke guide assembly is movably disposed at the lower end of the air inlet and is linked to the upper end of the air guide assembly, used to open or close the lower part of the air inlet. The flap assembly is disposed above the smoke guide assembly, and its upper and lower ends are respectively movably connected to the outer shell assembly and the upper end of the smoke guide assembly. The drive assembly is installed in the smoke collection chamber and its output end is connected to the flap assembly, used to drive the flap assembly to open or close the upper part of the air inlet. When the flap assembly is opened or closed, it can link the smoke guide assembly and the air guide assembly.

[0013] In some embodiments, the smoke gathering mechanism further includes an oil mesh assembly and / or two guide rail assemblies. The oil mesh assembly is movably disposed behind the flap assembly. The flap assembly is movably connected to the upper end of the smoke guiding assembly through the oil mesh assembly. The left and right ends of the smoke guiding assembly are slidably connected to the outer shell assembly through the two guide rail assemblies.

[0014] In some embodiments, the drive assembly includes a push rod motor, which includes a motor housing, a drive unit, a lead screw, a sliding rod, a Hall sensor, and multiple magnetic components. The lead screw is rotatably disposed within the motor housing. The drive unit is disposed on the motor housing and is drively connected to the lead screw. One end of the sliding rod is connected to the back of the flap assembly, and the other end is retractably sleeved on the end of the lead screw away from the drive unit. The multiple magnetic components are mounted at different positions on the motor housing. The Hall sensor is disposed on the sliding rod and is capable of sensing and contacting any of the magnetic components.

[0015] In some embodiments, smoke leakage sensors are provided at the bottom of the air handling unit and / or on the left and right side walls of the housing assembly.

[0016] In some embodiments, a cleaning mechanism is also included, with a water inlet provided at the bottom of the housing assembly. The cleaning mechanism is disposed in both the blower unit and the housing assembly and is connected to the water inlet for cleaning the blower unit.

[0017] The control method for a range hood provided above is achieved through the following technical solution:

[0018] A control method for a range hood, comprising the range hood as described above, the control method including the following steps:

[0019] S11, Start the oil absorption program and obtain preset control information, wherein the preset control information includes the cook's personal information or the selected dish program;

[0020] S12, Based on the preset control information, determine the preset rotation speed of the blower mechanism and the preset opening degree of the smoke collection mechanism;

[0021] S13, obtain and determine whether the concentration of escaped oil fume is within the standard concentration value. If not, continue to execute this step. If yes, increase the rotation speed of the fan mechanism and / or the opening of the smoke collection mechanism.

[0022] A control method for a range hood, comprising the range hood as described above, wherein the range hood is equipped with a cleaning mechanism for cleaning the blower unit mechanism, and the control method includes the following steps:

[0023] S21, Start the cleaning program, adjust the smoke collection mechanism to the minimum opening, and the air guide component will be rotated backward to the minimum angle under the drive of the smoke collection mechanism;

[0024] S22, control the cleaning mechanism to start working;

[0025] S23, After cleaning is completed, turn off the cleaning mechanism and the smoke collection mechanism.

[0026] Compared with the prior art, the present invention has at least the following beneficial effects:

[0027] 1. The range hood of the present invention, by movably arranging the air guide component in the smoke collection chamber of the outer shell component, and the smoke gathering mechanism movably arranged at the air inlet and linked with the air guide component, when the smoke gathering mechanism opens the air inlet, it can drive the air guide component to flip backward, thereby increasing the air intake angle between the air guide component and the air inlet, which is beneficial to improve the oil fume speed and smoke exhaust efficiency, and at the same time can reduce the resonance and noise amplification caused by the oil fume generating eddies in the outer shell component. When the smoke gathering mechanism closes the air inlet, the air guide component can flip forward, so that the upper end of the air guide component is close to the back of the smoke gathering mechanism, which can prevent oil or sewage from splashing and overflowing directly to the outside of the air inlet and causing pollution, while saving the cost of the drive component;

[0028] 2. When the range hood starts the cleaning program, the smoke collection mechanism can drive the air guide component to flip backward to the minimum air intake angle. At this time, the air guide component can isolate the sewage, so that the sewage generated by the cleaning air handling unit can flow smoothly from the air handling unit to the area behind the air guide component in the smoke collection chamber. This avoids the sewage dripping directly down onto the air guide component and prevents the sewage from splashing and overflowing outside the air inlet, causing pollution. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the range hood in the off state in Embodiment 1 of the present invention;

[0030] Figure 2 This is a cross-sectional view of the range hood in the closed state in Embodiment 1 of the present invention;

[0031] Figure 3 This is a schematic diagram of the range hood in the open state in Embodiment 1 of the present invention;

[0032] Figure 4 This is a cross-sectional view of the range hood in its minimum open state in Embodiment 1 of the present invention;

[0033] Figure 5 This is a cross-sectional view of the range hood in its fully open state in Embodiment 1 of the present invention;

[0034] Figure 6 This is a partial cross-sectional view of the range hood in the open state in Embodiment 1 of the present invention. Figure 1 ;

[0035] Figure 7 This is a partial cross-sectional view of the range hood in the open state in Embodiment 1 of the present invention. Figure 2 ;

[0036] Figure 8This is a schematic diagram of the driving component in Embodiment 1 of the present invention;

[0037] Figure 9 This is a cross-sectional view of the driving component in Embodiment 1 of the present invention;

[0038] Figure 10 This is a cross-sectional view of the range hood in the open state in Embodiment 1 of the present invention;

[0039] Figure 11 This is a partial cross-sectional view of the range hood in the open state in Embodiment 1 of the present invention. Figure 3 .

[0040] In the diagram: 1-Outer shell assembly, 11-Smoke collection chamber, 12-Air inlet, 13-Oil leakage hole, 14-Water inlet interface; 2-Air handling unit mechanism, 21-Box assembly; 3-Oil cup assembly;

[0041] 4-Air guide assembly, 41-Air guide plate, 42-Mounting bracket, 43-Connecting rod, 44-Pin;

[0042] 51-Drive assembly, 511-Motor housing, 512-Drive unit, 513-Lead screw, 514-Sliding rod, 515-Hall sensor, 516-Magnetic component, 517-Front bracket, 518-Rear bracket, 52-Flip plate assembly, 521-Glass flip plate, 522-Liner bracket, 523-Connecting bracket, 524-Hinge, 53-Oil mesh assembly, 531-Smoke hood, 532-Upper bracket, 533-Lower bracket, 54-Smoke guide assembly, 541-Glass panel, 542-Fixed bracket, 55-Guide rail assembly;

[0043] 6-Smoke leak sensor; 71-Switch operation component; 72-Control component. Detailed Implementation

[0044] The following embodiments illustrate the present invention, but the present invention is not limited to these embodiments. Modifications to the specific embodiments of the present invention or equivalent substitutions for some technical features, without departing from the spirit of the present invention, should all be covered within the scope of the technical solutions claimed in the present invention.

[0045] Example 1

[0046] refer to Figure 1-5This embodiment provides a range hood, including a housing assembly 1, a fan housing mechanism 2, an oil cup assembly 3, an air guide assembly 4, and a smoke collection mechanism (not shown in the figure). The housing assembly 1 has a smoke collection chamber 11, an air inlet 12 on the front of the housing assembly 1, an oil drain hole 13 at the bottom and a top mounting port (not shown in the figure) at the top, and the smoke collection chamber 11 is connected to the air inlet 12, the oil drain hole 13, and the top mounting port. The fan housing mechanism 2 is installed on the top of the housing assembly 1 and is connected to the smoke collection chamber 11. In this embodiment, the fan housing mechanism 2 includes a housing assembly 21 and a fan housing assembly (not shown in the figure). The housing assembly 21 is located at the top mounting port of the housing assembly 1 and is connected to the smoke collection chamber 11. The fan housing assembly is disposed inside the housing assembly 21 and has multiple working positions to form different smoke extraction levels. The oil cup assembly 3 is detachably installed at the bottom of the housing assembly 1, and it is connected to the smoke collection chamber 11 through the oil leakage hole 13 to receive the medium (such as oil) flowing down from the housing assembly 1.

[0047] The air guide assembly 4 is movable within the smoke collection chamber 11, and its lower end is movably connected to the bottom of the outer casing assembly 1. It is used to adjust the air intake angle between the air guide assembly 4 and the air inlet 12 to improve the speed and efficiency of smoke extraction. Simultaneously, it reduces the resonance and noise amplification caused by eddies generated by the smoke in the smoke collection chamber 11. It also isolates wastewater generated during the cleaning process to prevent it from splashing and overflowing between the air guide assembly 4 and the air inlet 12, thus preventing pollution. The smoke collection mechanism is movably mounted at the air inlet 12 and movably connected to the upper end of the air guide assembly 4. It is used to open or close the air inlet 12. When the smoke collection mechanism opens or closes the air inlet 12, it can cause the air guide assembly 3 to flip forward and backward.

[0048] refer to Figure 3-5 When the smoke collection mechanism opens the air inlet 12, it can cause the air guide component 4 to rotate backward, so that the upper end of the air guide component 4 is away from the air inlet 12, thereby increasing the air intake angle. This is beneficial to improving the speed of oil fumes and the efficiency of smoke exhaust. At the same time, it can reduce the resonance and noise caused by the eddies generated by oil fumes in the smoke collection chamber 11. When the smoke collection mechanism is opened to the minimum position (see...), Figure 4 When the upper end of the air guide assembly 4 is far from the back plate of the outer casing assembly 1, the rearward tilt angle and air inlet angle of the air guide assembly 4 are both at their minimum, and the distance between the air guide assembly 4 and the back of the outer casing assembly 1 is large. Oil or wastewater flowing from the air handling unit will not drip directly onto the air guide assembly 4, but will drip directly into the area of ​​the smoke collection chamber 11 located behind the air guide assembly 4. At this time, the air guide assembly 4 acts as an isolation device, preventing oil or wastewater from splashing or overflowing directly to the air inlet 12 and causing pollution. When the smoke collection mechanism is opened to its maximum position (see...), Figure 5When the upper end of the air guide assembly 4 abuts against the back plate of the outer shell assembly 1, the rearward tilt angle and air inlet angle of the air guide assembly 4 are at their maximum.

[0049] refer to Figure 1-2 Conversely, when the smoke collection mechanism closes the air inlet 12, the air guide component 4 can flip forward so that its upper end is close to the back of the smoke collection mechanism. At this time, the air guide component 4 is arranged vertically, tilted forward, or slightly tilted backward. The distance between the air guide component 4 and the back of the outer casing component 1 is at its maximum. Oil or sewage flowing down from the air handling unit will not drip directly onto the air guide component 4, but will only drip directly into the area of ​​the smoke collection chamber 11 located behind the air guide component 4. It can be seen that by movably setting the air guide component 4 in the smoke collection chamber 11 and linking it with the smoke collection mechanism, the air guide component 4 has the dual functions of air guiding, noise reduction, and isolation. Since the movement of the smoke collection mechanism can drive the air guide component 4, the cost of the drive component can be saved, and its space occupation inside the outer casing component can be reduced.

[0050] refer to Figure 1-6 The air guide assembly 4 includes an air guide plate 41, two mounting brackets 42, and two connecting rods 43. The air guide plate 41 is movably mounted in the smoke collection chamber 11, allowing it to flip back and forth. The left and right sides of the lower end of the air guide plate 41 are movably connected to the bottom of the outer shell assembly 1 via the two mounting brackets 42. The left and right sides of the upper end of the air guide plate 41 are movably connected to the smoke collection mechanism via the two connecting rods 43, thereby ensuring that the smoke collection mechanism can link the air guide plate 41 through the two connecting rods 43. In this embodiment, the left and right ends of the air guide plate 41 are bent forward to form side flanges. The lower end of the side flanges is rotatably connected to the corresponding mounting brackets 42 via pins 44, and the upper end of the side flanges is rotatably connected to the corresponding connecting rods 43 via pins 44.

[0051] Alternatively, the upper end of the air guide plate 41 can be bent backward to form an upward-curved edge. When the smoke collection mechanism is opened to its maximum position, the upward-curved edge of the air guide plate 41 is configured to abut against the back plate of the outer casing assembly 1. At this time, the air guide plate 41 can receive the oil stains flowing down from the air handling unit of the air handling unit 2, while the oil stains on the back plate of the outer casing assembly 1 can flow downward along the air guide plate 41. Alternatively, the lower end of the air guide plate 41 can be bent backward to form a downward-curved edge. Multiple oil drain holes are provided at the rear end of the downward-curved edge for oil stains to pass through, so that oil stains dripping onto the air guide plate 41 can be discharged from the oil drain holes and finally collected from the oil drain hole 13 into the oil cup assembly 3.

[0052] refer to Figure 1-11The smoke collection mechanism includes a drive assembly 51, a flap assembly 52, and a smoke guide assembly 54. The smoke guide assembly 54 is movably disposed at the lower end of the air inlet 12 and is linked to the upper end of the air guide assembly 4, used to open or close the lower part of the air inlet 12. The flap assembly 52 is disposed above the smoke guide assembly 54, and its upper and lower ends are respectively connected to the outer shell assembly 1 and the upper end of the smoke guide assembly 54, used to open or close the upper part of the air inlet 12. In this embodiment, the flap assembly 52 and the smoke guide assembly 54 cooperate to close the entire air inlet 12. The drive assembly 51 is installed inside the smoke collection chamber 11 and its output end is connected to the back of the flap assembly 52. ​​It is used to drive the flap assembly 52 to open or close the upper part of the air inlet 12. When the flap assembly 52 is switched on and off, it can move the smoke guide assembly 54 up and down and the air guide assembly 4 flip back and forth, so that the smoke guide assembly 54 moves up to open or moves down to close the lower part of the air inlet 12. When the smoke guide assembly 54 moves up and down, it can drive the air guide assembly 4 to flip back or forward, thereby adjusting the air inlet angle and air inlet area between the air guide assembly and the air inlet.

[0053] As can be seen, multi-level linkage can be achieved through a single drive component 51, saving drive component costs and reducing the space occupied inside the range hood. When the drive component 51 drives the flap component 52 to open to a set angle, the upper part of the air inlet 12 is opened to serve as an upper smoke inlet, mainly sucking and exhausting the oil fumes from the outside and the upper part; at the same time, the flap component 52 drives the smoke guide component 54 to move upward, opening or closing the lower part of the air inlet 12 to serve as a lower smoke inlet, mainly sucking and exhausting the oil fumes from the inner side of the wall and the lower position, forming a dual upper and lower suction. At this time, the air handling unit of the air handling unit mechanism 2 can be set to a lower speed and a smaller air volume to meet the requirements of smoke extraction effect and auditory comfort, improve the smoke extraction effect, and reduce operating noise.

[0054] In this embodiment, the flap assembly 52 is arranged at the upper end of the front of the outer shell assembly 1. When the flap assembly 52 is opened, the smoke collection distance does not exceed 350mm, so it will not obstruct the cooking view or cause head bumps. The first and second air inlets form a double suction from the top and bottom. The second air inlet mainly sucks and exhausts the oil fumes on the inner side of the wall and the lower position, while the first air inlet mainly sucks and exhausts the oil fumes on the outer side and the upper part. The main fan can be set to a low speed and a small air volume to meet the requirements of smoke extraction effect and auditory comfort.

[0055] refer to Figure 7-9The drive assembly 51 includes a push rod motor (not shown in the figure), a front bracket 517, and a rear bracket 518. The rear end of the push rod motor is fixedly mounted to the back plate or top plate of the housing assembly 1 via the rear bracket 518, and the front end is movably connected to the back of the flip plate assembly 52 via the front bracket 517. The push rod motor includes a motor housing 511, a drive unit 512, a lead screw 513, a sliding rod 514, a Hall sensor 515, and multiple magnetic components 516. The lead screw 513 is rotatably disposed inside the motor housing 511. The drive unit 512 is disposed on the motor housing 511 and is connected to the lead screw 513 for transmission. One end of the sliding rod 514 is connected to the back of the flip plate assembly 52, and the other end is retractably sleeved outside the end of the lead screw 513 away from the drive unit 512. When the drive unit 512 drives the lead screw to rotate, the rotation of the lead screw 513 can drive the sliding rod 514 to extend and retract, so that the sliding rod 514 extends and retracts along the length of the lead screw. Multiple magnetic components 516 are installed at different positions inside the motor housing 511. In this embodiment, the multiple magnetic components 516 are arranged at intervals along the length of the sliding rod 514. A Hall sensor 515 is disposed on the sliding rod 514 and can sense and contact any of the magnetic components 516. This allows the drive assembly 51 to have multiple different strokes, which in turn allows the flap assembly 52 and the air guide assembly 4 to have multiple different flipping and opening angles, and the smoke guide assembly 54 to have multiple different up-and-down movement strokes. This can adapt to cooking scenarios with different amounts of oil fumes, achieving the best match between the opening and closing angles and the rotation speed of the fan assembly, meeting the requirements for smoke extraction effect and low noise. When the oil fume concentration is low, the opening degree of the flap assembly 52, the smoke guide assembly 54, and the air guide assembly 4 is small; when the oil fume concentration is high, the opening degree of the flap assembly 52, the smoke guide assembly 54, and the air guide assembly 4 is large.

[0056] refer to Figure 7 and Figure 10-11 The flap assembly 52 includes a glass flap 521, a liner bracket 522, two connecting brackets 523, and two hinges 524. The upper end of the glass flap 521 is rotatably connected to the top of the outer casing assembly 1 via the two hinges 524. The liner bracket 522 is installed on the back of the glass flap 521 and is movably connected to the output end of the drive assembly 51, so that the drive assembly can reliably connect to the flap assembly 52 and effectively drive the flap assembly to flip and open. The two connecting brackets 523 are respectively installed on the left and right sides of the back of the glass flap 521, and are used to movably connect to the left and right sides of the upper end of the air guide assembly 4 or the upper end of the oil mesh assembly 53, so that the flap assembly 52 can reliably connect to the air guide assembly 4 or the oil mesh assembly 53 when the flap assembly 52 flips and opens.

[0057] Furthermore, the smoke collection mechanism also includes an oil mesh assembly 53 and / or two guide rail assemblies 55. The oil mesh assembly 53 is movably disposed behind the flap assembly 52. ​​The flap assembly 52 is movably connected to the upper end of the smoke guide assembly 54 through the oil mesh assembly 53. When the flap assembly 52 opens or closes the upper part of the air inlet 12, it can drive the oil mesh assembly 53 to extend or retract into the smoke collection chamber 11 of the outer shell assembly 1. When the oil mesh assembly 53 extends or retracts into the outer shell assembly 1, it can drive the smoke guide assembly 54 to move up and down. As the flap assembly 52 opens, the oil filter assembly 53 moves forward and downward, causing the upper smoke inlet and negative pressure zone to move from vertical to downward and forward, effectively preventing oil fumes from escaping. Additionally, oil stains adhering to the surface of the drive assembly and the switch operation assembly 71 mounted on the back of the flap assembly 52 can flow onto the oil filter assembly 53, which then guides the oil stains into the smoke collection chamber 11 of the outer casing assembly 1. This solves the oil circuit problem for the drive assembly and the switch operation assembly 71 mounted on the back of the flap assembly 52, preventing oil stains from dripping onto the stovetop. The left and right ends of the smoke guide assembly 54 are slidably connected to the outer casing assembly 1 via two guide rail assemblies 55, ensuring smoother and more stable vertical movement of the smoke guide assembly 54.

[0058] refer to Figure 11 The oil filter assembly 53 includes a smoke collection hood 531, two upper supports 532, and two lower supports 533. The smoke collection hood 531 is located behind the flap assembly and has multiple air inlet mesh holes. The left and right sides of the upper end of the smoke collection hood 531 are rotatably connected to the flap assembly 52 via the two upper supports 532, and the left and right sides of the lower end of the smoke collection hood 531 are movably connected to the outer shell assembly 1 and / or the smoke guide assembly 54 via the two lower supports 533.

[0059] refer to Figure 6 or Figure 11 The smoke guiding assembly 54 includes a glass panel 541 and two fixed brackets 542. The two fixed brackets 542 are fixedly installed on the left and right sides of the back of the glass panel 541. The fixed brackets 542 are slidably connected to the outer shell assembly 1 through the guide rail assembly 55. The lower bracket 533 of the oil mesh assembly 53 is movably connected to the upper end of the corresponding fixed bracket 542. The connecting rod 43 of the air guiding assembly 4 is movably connected to the lower end of the corresponding fixed bracket 542, thereby ensuring that the oil mesh assembly 53 can reliably drive the smoke guiding assembly 54 to move up and down when it moves.

[0060] refer to Figure 1-10Furthermore, it also includes a switch operation component 71 and a control component 72. The switch operation component 71 is located on the back of the flip plate component or the back of the smoke guide component of the smoke collection mechanism. The switch operation component 71 supports account login and pre-stored personal information. Account login methods include fingerprint login, facial recognition, password login, etc. Personal information mainly includes age, region, taste preferences, etc. The control component 72 is located on the top of the blower mechanism 2. The control component 72 is electrically connected to the switch operation component 71, the blower mechanism 2, and the smoke collection mechanism. Different recipes are set in the control component 72. During the initial verification and testing of the recipes, different smoke collection opening and closing angles and blower component speeds are set according to the amount of oil smoke for different dishes. The smoke collection opening and closing angle and speed information are bound to the dish program. When the user selects a specific dish to cook, the control component 72 opens the smoke collection plate mechanism to the opening and closing angle corresponding to the dish and executes the specific blower component speed.

[0061] refer to Figure 3 Furthermore, it also includes a smoke leakage sensor 6, which is provided on the bottom of the blower mechanism 2 and / or the left and right side walls of the outer casing assembly 1. The smoke leakage sensor 6 is electrically connected to the control assembly 72 and is used to detect the smoke leakage of the smoke machine. The control assembly 72 can adjust the smoke collection opening and closing angle of the smoke collection mechanism and / or the speed of the blower assembly of the blower mechanism 2 according to the smoke leakage.

[0062] refer to Figure 4-5 Furthermore, it also includes a cleaning mechanism (not shown in the figure), with a water inlet 14 provided at the bottom of the outer casing assembly 1. The cleaning mechanism is respectively located inside the blower unit 2 and the outer casing assembly 1 and is connected to the water inlet 14. It is used to clean the blower unit of the blower unit 2, thereby enabling the range hood to have a cleaning function.

[0063] Example 2

[0064] The difference between this embodiment and Embodiment 1 lies in the specific structure of the smoke-gathering mechanism. Specifically, the smoke-gathering mechanism omits the smoke-guiding component, and the flap assembly 52 is positioned lower. In this embodiment, the upper end of the front of the outer casing assembly 1 is closed, and the air inlet 12 is located at the lower end of the front of the outer casing assembly 1. The smoke-gathering mechanism includes a drive assembly 51 and a flap assembly 52. ​​The flap assembly 52 is rotatably positioned in front of the air-guiding component 4. Its upper and lower ends are movably connected to the upper end of the front of the outer casing assembly 1 and the upper end of the air-guiding component 4, respectively. The drive assembly 51 is installed inside the smoke collection chamber 11, with one end connected to the outer casing assembly 1 and the other end (i.e., the output end) movably connected to the back of the flap assembly 52. ​​This drive assembly drives the flap assembly 52 to open or close the air inlet 12. When the flap assembly 52 opens or closes the air inlet 12, it can rotate the air-guiding component 4 in conjunction with the flap assembly 4. Therefore, the flap assembly 52 does not require the smoke-guiding component to coordinate with the air-guiding component 4, thus eliminating the smoke-guiding component and simplifying the structure of the smoke-gathering mechanism, resulting in lower cost.

[0065] In this embodiment, the smoke collection mechanism also includes an oil mesh assembly 53, which is movably disposed behind the flap assembly 52. ​​The flap assembly 52 is movably connected to the upper end of the air guide assembly 4 via the oil mesh assembly 53. When the flap assembly 52 opens or closes the air inlet 12, it can drive the oil mesh assembly 53 to extend or retract into the smoke collection chamber 11 of the outer shell assembly 1. This facilitates the downward shift of negative pressure, improves the smoke collection effect, and makes it easier for the flap assembly 52 to link with the air guide assembly 4 via the oil mesh assembly 53. In addition, it facilitates the guidance of oil stains on the back of the flap assembly, the surface of the switch operation assembly 71, and the surface of the drive assembly 51 to the smoke collection chamber 11 of the outer shell assembly 1 through the oil fume assembly, which can solve the oil circuit problem of the drive assembly and the switch operation assembly 71 installed on the back of the flap assembly 52, and prevent oil stains from dripping onto the stove. In other embodiments, the oil mesh assembly 53 can be omitted; of course, it can also be replaced by detachably installing the oil mesh assembly 53 at the air inlet 12.

[0066] Example 3

[0067] The difference between this embodiment and embodiments 1 or 2 lies in the specific structure of the smoke collection mechanism. Specifically, the smoke collection mechanism omits the flap assembly. Correspondingly, the upper end of the front of the outer casing assembly 1 is closed, and the air inlet 12 is located at the lower end of the front of the outer casing assembly 1. The smoke collection mechanism includes a power component and a smoke guide assembly 54. The smoke guide assembly 54 is movably positioned at the air inlet 12 and is linked to the upper end of the air guide assembly 4. The power component is installed inside the smoke collection chamber 11, and its output end is movably connected to the smoke guide assembly 54. It drives the smoke guide assembly 54 to move upward to open or downward to close the air inlet 12. When the smoke guide assembly 54 moves up and down, it can cause the air guide assembly 4 to flip backward and forward. Therefore, by using a power component to directly drive the smoke guide assembly 54 to move up and down, the flap assembly is eliminated, resulting in a simpler structure and lower cost for the smoke collection mechanism. It also solves the problem of obstructed vision caused by the flap assembly.

[0068] In addition, the smoke collection mechanism also includes two guide rail assemblies 55, and the left and right ends of the smoke guide assembly 54 are slidably connected to the outer shell assembly 1 through the two guide rail assemblies 55.

[0069] Example 4

[0070] This embodiment provides a control method for a range hood, which has a range hood as described in any one of embodiments 1-3, and the control method includes the following steps:

[0071] S11, Start the oil absorption program and obtain preset control information, including the cook's personal information or the selected dish program;

[0072] S12, Based on the preset control information, determine the preset rotation speed of the air handling unit 2 and the preset opening degree of the smoke collection mechanism;

[0073] Specifically, the control component 72 executes the control program of the air handling unit 2 and the smoke collection mechanism according to the preset control information, adjusts the air handling unit of the air handling unit 2 to the preset speed corresponding to the preset control information, and opens the flap assembly 52 and / or the smoke guide assembly 54 of the smoke collection mechanism to the preset opening degree corresponding to the preset control information.

[0074] When the smoke collection mechanism has both a flap assembly 52 and a smoke guide assembly 52, the flap assembly 52 is opened to the preset opening degree corresponding to the preset control information to open the upper part of the air inlet; the flap assembly 52 drives the smoke guide assembly 52 to move upward and open to open the lower part of the air inlet, forming a double suction effect from top to bottom; when the smoke guide assembly 52 moves upward, it drives the air guide assembly 4 to rotate backward to adjust the air inlet angle and air inlet area, which helps to improve the oil fume speed and oil absorption effect.

[0075] When the smoke collection mechanism only has the flap assembly 52, the flap assembly 52 is opened to the preset opening degree corresponding to the preset control information to open the air inlet. The flap assembly 52 drives the air guide assembly 4 to flip backward. Alternatively, when the smoke collection mechanism only has the smoke guide assembly 52, the smoke guide assembly 52 is driven to move upward to the preset opening degree corresponding to the preset control information to open the air inlet. When the smoke guide assembly 52 moves upward, it drives the air guide assembly 4 to flip backward.

[0076] S13, obtain and determine whether the concentration of escaped oil fume is the standard concentration value. If not, continue to execute this step. If yes, increase the rotation speed of the air handling unit 2 and / or the opening of the smoke collection mechanism.

[0077] Specifically, the smoke leakage sensor 6 detects in real time whether the concentration of escaped oil fumes exceeds the standard. If not, it maintains the current opening and rotation speed; if so, it increases the rotation speed of the fan mechanism 2 and / or the opening of the smoke collection mechanism.

[0078] It is evident that when the oil suction program is started, the preset speed of the blower mechanism and the preset opening of the smoke collection mechanism are determined according to the preset control information, which helps to improve the product's adaptability and smoke extraction effect. In addition, by increasing the speed of the blower mechanism 2 and / or the opening of the smoke collection mechanism when the escaped oil fume concentration exceeds the standard, the smoke extraction effect and low noise are ensured, which can adapt to more cooking scenarios with different amounts of oil fume.

[0079] Furthermore, the specific steps for increasing the rotational speed of the air handling unit 2 and / or the opening degree of the smoke collection mechanism include:

[0080] The smoke collection mechanism maintains its current opening, the speed of the air handling unit component of the air handling unit 2 increases, the air volume increases, and it continues to run for a period of time; then it acquires and judges again whether the concentration of escaped oil fumes exceeds the standard. If there is still oil fume escaping, it maintains the increased air volume and further increases the opening of the smoke collection mechanism; this cycle continues until the amount of escaped oil fumes is detected to be within the normal range.

[0081] When the smoke collection mechanism opens to its maximum, and the fan assembly of the fan unit 2 reaches its maximum speed, if the smoke leakage sensor 6 detects that oil fumes are still escaping, the control component 72 will indicate a minor product malfunction. If the control component 72 detects that this phenomenon occurs frequently, more than three times a week, the abnormal data will be reported to after-sales service for processing.

[0082] Example 5

[0083] This embodiment provides a control method for a range hood, which has a range hood as described in any one of embodiments 1-3. The range hood is provided with a cleaning mechanism for cleaning the air handling unit assembly of the air handling unit 2. The control method includes the following steps:

[0084] S21, start the cleaning program, adjust the smoke collection mechanism to the minimum opening, and the air guide component 4 will be rotated backward to the minimum angle under the drive of the smoke collection mechanism;

[0085] refer to Figure 5 When the smoke collection mechanism has both a flap assembly 52 and a smoke guide assembly 52, the air guide assembly 4 is linked with the flap assembly 52 through the smoke guide assembly 52. ​​At this time, if the smoke machine starts the cleaning program, the flap assembly 52 is adjusted to the minimum opening angle. The flap assembly 52 drives the smoke guide assembly 52 to move up to the minimum upward position. When the smoke guide assembly 52 moves up, it drives the air guide assembly 4 to flip backward to the minimum angle.

[0086] When the smoke collection mechanism only has the flap assembly 52, the air guide assembly 4 is linked with the flap assembly 52. ​​If the range hood starts its cleaning program, the flap assembly 52 is adjusted to its minimum opening angle, causing the air guide assembly 52 to flip backward to its minimum angle. Alternatively, when the smoke collection mechanism only has the smoke guide assembly 52, the air guide assembly 4 is linked with the smoke guide assembly 52. ​​If the range hood starts its cleaning program, the smoke guide assembly 52 is driven upward to its minimum upward position, causing the air guide assembly 4 to flip backward to its minimum angle.

[0087] S22, control the cleaning mechanism to start working;

[0088] S23, After cleaning is completed, turn off the cleaning mechanism and the smoke collection mechanism.

[0089] As can be seen, during the cleaning process, when the smoke collection mechanism is adjusted to its minimum opening, the air guide component 4 is driven by the smoke collection mechanism to rotate backward to its minimum angle. At this time, the air guide component 4 does not obstruct the smoke collection chamber of the outer shell component 1, which not only ensures the smooth air intake when the air handling unit rotates during cleaning, but also ensures that the wastewater generated during cleaning flows smoothly from the air handling unit of the air handling unit to the area behind the air guide component in the smoke collection chamber, and is finally collected into the oil cup component 3. This prevents wastewater from dripping directly onto the air guide component, and the air guide component plays an isolation role, preventing wastewater from splashing and overflowing and causing pollution.

[0090] The above descriptions are merely some embodiments of the present invention. Those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A range hood, characterized in that, include: The outer shell assembly (1) has a smoke collection chamber (11) and an air inlet (12) connected to the smoke collection chamber (11) is provided on the front of the outer shell assembly (1). The air handling unit (2) is located on the top of the outer casing assembly (1) and is connected to the smoke collection chamber (11); The air guide assembly (4) is movable back and forth within the smoke collection chamber (11), and its lower end is movably connected to the bottom of the outer casing assembly (1); and The smoke collection mechanism is movably disposed at the air inlet (12) and movably connected to the upper end of the air guide assembly (4). When the smoke collection mechanism opens the air inlet (12), it can drive the air guide assembly (4) to flip backward, and when the smoke collection mechanism closes the air inlet (12), it can drive the air guide assembly (4) to flip forward. The air guide assembly (4) includes an air guide plate (41), two mounting brackets (42) and two connecting rods (43). The left and right sides of the lower end of the air guide plate (41) are movably connected to the bottom of the outer shell assembly (1) through the two mounting brackets (42), and the left and right sides of the upper end of the air guide plate (41) are movably connected to the smoke collection mechanism through the two connecting rods (43). The smoke collection mechanism includes a drive assembly (51), a flap assembly (52), and a smoke guide assembly (54). The smoke guide assembly (54) is movably disposed at the lower end of the air inlet (12) and linked with the upper end of the air guide assembly (4) to open or close the lower part of the air inlet (12). The flap assembly (52) is disposed above the smoke guide assembly (54), and its upper and lower ends are respectively movably connected to the outer shell assembly (1) and the upper end of the smoke guide assembly (54). The drive assembly (51) is installed in the smoke collection chamber (11), and its output end is connected to the flap assembly (52) to drive the flap assembly (52) to open or close the upper part of the air inlet (12). When the flap assembly (52) is switched on and off, it can link the smoke guide assembly (54) and the air guide assembly (4).

2. The range hood according to claim 1, characterized in that, The smoke collection mechanism further includes an oil mesh assembly (53) and / or two guide rail assemblies (55). The oil mesh assembly (53) is movably disposed behind the flap assembly (52). The flap assembly (52) is movably connected to the upper end of the smoke guide assembly (54) through the oil mesh assembly (53). The left and right ends of the smoke guide assembly (54) are slidably connected to the outer shell assembly (1) through the two guide rail assemblies (55).

3. The range hood according to claim 1, characterized in that, The drive assembly (51) includes a push rod motor, which includes a motor housing (511), a drive unit (512), a lead screw (513), a sliding rod (514), a Hall sensor (515), and a plurality of magnetic components (516). The lead screw (513) is rotatably disposed inside the motor housing (511). The drive unit (512) is disposed on the motor housing (511) and is connected to the lead screw (513) in a transmission connection. One end of the sliding rod (514) is connected to the back of the flip plate assembly (52), and the other end is retractably sleeved on the end of the lead screw (513) away from the drive unit (512). The plurality of magnetic components (516) are installed at different positions on the motor housing (511). The Hall sensor (515) is disposed on the sliding rod (514) and can sense contact with any of the magnetic components (516).

4. A range hood according to any one of claims 1-3, characterized in that, Smoke leakage sensors (6) are provided at the bottom of the air handling unit (2) and / or on the left and right side walls of the outer casing assembly (1).

5. A range hood according to any one of claims 1-3, characterized in that, It also includes a cleaning mechanism. A water inlet (14) is provided at the bottom of the outer casing assembly (1). The cleaning mechanism is respectively disposed in the blower mechanism (2) and the outer casing assembly (1) and is connected to the water inlet (14) for cleaning the blower mechanism (2).

6. A control method for a range hood, characterized in that, A range hood as described in any one of claims 1-5, wherein the control method comprises the following steps: S11, Start the fume extraction program and obtain preset control information, wherein the preset control information includes the cook's personal information or the selected dish program; S12, Based on the preset control information, determine the preset rotation speed of the air handling unit (2) and the preset opening degree of the smoke collection mechanism; S13, obtain and determine whether the concentration of escaped oil fume reaches the standard concentration value. If not, continue to execute this step. If yes, increase the rotation speed of the blower mechanism (2) and / or the opening of the smoke collection mechanism.

7. A control method for a range hood, characterized in that, A range hood as described in any one of claims 1-5, wherein the range hood is provided with a cleaning mechanism for cleaning the blower unit (2), and the control method includes the following steps: S21, start the cleaning program, adjust the smoke collection mechanism to the minimum opening, and the air guide component (4) will be rotated backward to the minimum angle under the drive of the smoke collection mechanism; S22, control the cleaning mechanism to start working; S23, After cleaning is completed, shut down the cleaning mechanism and the smoke collection mechanism.

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