Linkage control method for smoke gathering assembly of range hood and range hood

Abstract

The application relates to the field of household appliances, in particular to a linkage control method for a smoke gathering assembly of an extractor hood and the extractor hood. The extractor hood comprises a fan, a smoke gathering assembly and an oil fume concentration detection unit, the fan is provided with an air inlet below, the smoke gathering assembly comprises a smoke baffle, a flow guide plate and a connecting rod. The smoke baffle is rotationally arranged at the air inlet, the oil fume concentration detection unit is used for detecting oil fume concentration information, the bottom end of the flow guide plate is movably connected with the inner wall of the smoke baffle, and the top end of the flow guide plate is movably connected with the connecting rod. The method comprises the following steps: acquiring current oil fume concentration information detected by the oil fume concentration detection unit; based on the oil fume concentration information, the smoke baffle is controlled to rotate to a corresponding position by a corresponding angle, the height of the flow guide plate is linkage controlled by the connecting rod, so as to realize linkage adjustment of a smoke gathering area and a negative pressure height. By adopting the method, linkage adjustment of the smoke gathering area and the negative pressure height can be realized, and the oil fume suction effect of the extractor hood is improved.

Description

Technical Field

[0001] This application relates to the field of home appliances, and in particular to a method for linkage control of the smoke collection component of a range hood and the range hood itself. Background Technology

[0002] Range hoods work by utilizing the principles of fluid dynamics. They use a centrifugal fan installed inside the hood to draw in and exhaust cooking fumes, and a filter screen to remove some of the grease particles.

[0003] To expand the smoke collection area, some existing range hoods use rotating smoke baffles. However, because the triangular area formed by the baffle is far from the smoke source and has a higher negative pressure, the smoke collection area and negative pressure height cannot be simultaneously optimized, resulting in a less than ideal smoke extraction effect. Furthermore, gaps exist at the connection between the top edge of the baffle and the range hood body, allowing some smoke to escape as it enters the cavity along the inner wall of the baffle. This leads to a buildup of grease at the bottom of the fan housing over the years, reducing smoke extraction efficiency and affecting the user experience. Summary of the Invention

[0004] Therefore, it is necessary to provide a method for linkage control of the smoke collection component of a range hood and a range hood that can simultaneously adjust the smoke collection range and negative pressure height and change the path of oil fumes to prevent them from escaping from gaps in the machine body, in order to address the above-mentioned technical problems.

[0005] In a first aspect, embodiments of this application provide a method for linkage control of a smoke-collecting component of a range hood. The range hood includes a fan, a smoke-collecting component, and a smoke concentration detection unit. A smoke inlet is located below the fan. The smoke-collecting component includes a smoke baffle, a guide plate, and a connecting rod. The smoke baffle is rotatably disposed at the smoke inlet. The smoke concentration detection unit is used to detect smoke concentration information. The bottom end of the guide plate is movably connected to the inner wall of the smoke baffle, and the top end of the guide plate is movably connected to the connecting rod. The method includes:

[0006] Obtain the current oil fume concentration information detected by the oil fume concentration detection unit;

[0007] Based on the oil fume concentration information, the smoke baffle is rotated to the corresponding position by a corresponding angle, and the height of the guide plate is controlled by the connecting rod to achieve the linkage adjustment of the smoke collection area and the negative pressure height.

[0008] In one embodiment, controlling the smoke baffle to rotate to a corresponding position by a corresponding angle based on the oil fume concentration information includes:

[0009] Based on the oil fume concentration information, the oil fume concentration level is determined;

[0010] Based on the oil fume concentration level, the smoke baffle is controlled to rotate to the corresponding position by the corresponding angle.

[0011] In one embodiment, the oil fume concentration detection unit includes an image acquisition unit, which acquires an image containing oil fumes and uses an image detection algorithm to obtain oil fume concentration information in the image.

[0012] In one embodiment, the method further includes:

[0013] Obtain the speed rating information of the fan;

[0014] Based on the oil fume concentration information and rotation speed level information, the smoke baffle is controlled to rotate to the corresponding position by the corresponding angle.

[0015] In one embodiment, the method further includes:

[0016] Obtain the firepower level information of the stove;

[0017] Based on the information on oil fume concentration, rotation speed, and firepower, the smoke baffle is controlled to rotate to the corresponding position by the corresponding angle.

[0018] In one embodiment, the rotation angle of the smoke baffle is determined based on the oil fume concentration information, rotation speed level information, firepower level information and their respective weights.

[0019] Secondly, this application provides a range hood, including a fan box, a smoke collection chamber, and a smoke gathering assembly. The fan box is used to house a fan, the smoke collection chamber is located below the fan box, and the smoke collection chamber has a smoke inlet for the entry of cooking fumes. The smoke gathering assembly includes a smoke baffle, a guide plate, and a connecting rod. The smoke baffle is rotatably disposed at the smoke inlet, the bottom end of the guide plate is movably connected to the inner wall of the smoke baffle, and the guide plate is movably connected to the connecting rod.

[0020] In one embodiment, the range hood further includes a controller and an oil fume concentration detection unit. The oil fume concentration detection unit is electrically connected to the controller and is used to detect oil fume concentration information. The controller is used to acquire the current oil fume concentration information detected by the oil fume concentration detection unit. Based on the oil fume concentration information, the controller controls the smoke baffle to rotate to a corresponding position by a corresponding angle, and controls the height of the guide plate in a coordinated manner to achieve the linkage adjustment of the smoke collection area and the negative pressure height.

[0021] In one embodiment, the controller determines the fume concentration level based on the fume concentration information; and controls the fume baffle to rotate to the corresponding position by a corresponding angle based on the fume concentration level.

[0022] In one embodiment, the controller is used to acquire the fan speed level information; based on the speed level information, it controls the smoke baffle to rotate to the corresponding position by a corresponding angle.

[0023] In one embodiment, the controller is used to acquire the firepower level information of the stove; based on the firepower level information, it controls the smoke baffle to rotate to the corresponding position by a corresponding angle.

[0024] Compared with the prior art, this application has the following beneficial effects:

[0025] (1) By setting a guide plate on the inner wall of the smoke baffle, the path of the oil fume is changed. That is, the oil fume is quickly sucked away by the negative pressure generated by the fan during the upward process after entering the cavity along the guide plate, which greatly reduces the oil fume escaping through the gap at the connection between the top of the smoke baffle and the body. Furthermore, as the smoke baffle rotates and opens to expand the smoke collection area, it also drives the guide plate to move downward, causing the negative pressure area to move downward. This achieves synchronous adjustment of the smoke collection area and the negative pressure height, effectively improving the oil fume extraction effect.

[0026] (2) The current oil fume concentration information is obtained in real time through the oil fume concentration detection unit. The controller controls the smoke baffle to rotate to the corresponding position according to the oil fume concentration information. During the rotation of the smoke baffle, the connecting rod controls the height of the guide plate in linkage, realizing the precise linkage adjustment of the smoke collection area and the negative pressure height (guide plate height), which improves the oil fume extraction effect of the range hood. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a range hood in one embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the smoke collection component in the state of the range hood when it is not in operation, according to one embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the smoke collection component in operation of a range hood according to an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of a fan-shaped foldable side plate in one embodiment of the present invention;

[0031] Figure 5 This is a flowchart illustrating the linkage control method of the smoke collection component of a range hood in one embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of the process of controlling the smoke baffle to rotate to a corresponding position based on the oil fume concentration information in one embodiment of the present invention;

[0033] Figure 7This is a schematic diagram of a process in one embodiment of the present invention, which controls the smoke baffle to rotate to a corresponding position by a corresponding angle based on oil fume concentration information and rotation speed level information.

[0034] Figure 8 This is a schematic diagram illustrating the process of controlling the smoke baffle to rotate to a corresponding position by a corresponding angle based on information on oil fume concentration, rotation speed level, and firepower level in one embodiment of the present invention. Detailed Implementation

[0035] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of the present invention. For those skilled in the art, the present invention can be applied to other similar scenarios based on these drawings without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0036] As indicated in this invention and the claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0037] While this invention makes various references to certain modules in systems according to embodiments of the invention, any number of different modules can be used and run on computing devices and / or processors. Modules are merely illustrative, and different aspects of the system and method may use different modules.

[0038] It should be understood that when a unit or module is described as "connected" or "coupled" to other units, modules, or blocks, it may refer to a direct connection or coupling, or communication with other units, modules, or blocks, or the presence of intermediate units, modules, or blocks, unless the context explicitly indicates otherwise. The term "and / or" as used herein may include any and all combinations of one or more of the related listed items.

[0039] This invention provides a range hood, such as... Figure 1 As shown, the range hood includes a fan box 10, a smoke collection chamber 20, and a smoke collection assembly 30.

[0040] The fan box 10 is used to house the fan, and the smoke collection chamber 20 is located below the fan box 10. The smoke collection chamber 20 is provided with a smoke inlet for oil fumes to enter.

[0041] The smoke collection assembly 30 includes a smoke baffle 301, a flow guide 302, and a connecting rod 303. The smoke baffle 301 is rotatably disposed at the smoke inlet; a flow guide 32 is movably disposed on the inner wall of the smoke baffle 301, and the bottom end of the flow guide 302 is movably connected to the inner wall of the smoke baffle; the flow guide 302 is movably connected to the connecting rod 303.

[0042] Thus, by setting a guide plate on the inner wall of the smoke baffle, the path of the oil fume is changed. As the oil fume rises along the guide plate into the cavity, it is quickly sucked away by the negative pressure generated by the fan, which greatly reduces the oil fume escaping through the gap at the connection between the top of the smoke baffle and the body. Furthermore, as the smoke baffle rotates and opens to expand the smoke collection area, it also drives the guide plate to move downward, causing the negative pressure area to shift downward. This achieves synchronous adjustment of the smoke collection area and the negative pressure height, effectively improving the oil fume extraction effect.

[0043] In one embodiment, the range hood further includes an oil fume concentration detection unit (not shown in the figure) and a controller (not shown in the figure). The oil fume concentration detection unit is electrically connected to the controller. The oil fume concentration detection unit is used to detect oil fume concentration information. The controller is used to acquire the current oil fume concentration information detected by the oil fume concentration detection unit. Based on the oil fume concentration information, the controller controls the smoke baffle to rotate to the corresponding position by a corresponding angle, and controls the height of the guide plate in a coordinated manner.

[0044] In this way, the current oil fume concentration information is obtained in real time through the oil fume concentration detection unit. Based on the oil fume concentration information, the controller controls the smoke baffle to rotate to the corresponding position. During the rotation of the smoke baffle, the connecting rod controls the height of the guide plate in linkage, realizing the precise linkage adjustment of the smoke collection area and the negative pressure height (guide plate height), thereby improving the oil fume extraction effect of the range hood.

[0045] In one embodiment, the controller determines the fume concentration level based on the fume concentration information; and controls the fume baffle to rotate to the corresponding position by a corresponding angle based on the fume concentration level.

[0046] In one embodiment, the controller is used to acquire the fan speed level information; based on the speed level information, it controls the smoke baffle to rotate to the corresponding position by a corresponding angle.

[0047] In one embodiment, the controller is used to acquire the firepower level information of the stove; based on the firepower level information, it controls the smoke baffle to rotate to the corresponding position by a corresponding angle.

[0048] The oil fume concentration detection unit can be installed on the guide plate 302.

[0049] When the range hood is not in operation, the state of the smoke collection assembly 30 is as follows: Figure 2 As shown, the smoke baffle 301 closes the smoke inlet, and the guide plate 302 and the connecting rod 303 are housed in the smoke collection chamber 20.

[0050] When the range hood is working, the state of the smoke collection component 30 is as follows: Figure 3 As shown, the smoke baffle 301, driven by the controller, moves from... Figure 2 Rotate to the closed position as shown. Figure 3 The image shows the fully open state. In the fully open state, the angle β between the extension line of the guide plate 302 and the back plate 201 of the smoke collection chamber 20 is no greater than 90°.

[0051] Optionally, to prevent oil fumes from entering from the triangular areas on both sides of the smoke baffle 301 and the guide plate 302, and to maintain aesthetics, connections are made on both sides of the smoke baffle 301 and the guide plate 302 along their length, such as... Figure 4 The fan-shaped foldable side panel 60 is shown.

[0052] The fan-shaped foldable side panel 60 includes at least two fan-shaped plates 601. The arc segment of the fan-shaped plate 601 is provided with a sliding member 602 and a sliding groove 603. The fan-shaped foldable side panel extends in conjunction with the rotation of the smoke baffle 301, thereby closing the triangular areas on both sides of the smoke baffle 301 and the guide plate 302 when the range hood is working.

[0053] like Figure 5 As shown, a method for linkage control of the smoke collection component of a range hood is provided, applicable to, for example... Figure 1 The controller of the range hood shown includes the following steps:

[0054] S101, Obtain the current oil fume concentration information detected by the oil fume concentration detection unit.

[0055] Specifically, the oil fume concentration information includes the magnitude of the oil fume concentration. The oil fume concentration detection unit includes an image acquisition unit, which acquires an image containing oil fumes and uses an image detection algorithm to obtain the oil fume concentration information in the image.

[0056] For example, the image acquisition unit may be a camera or an infrared sensor.

[0057] S102, based on the oil fume concentration information, control the smoke baffle to rotate to the corresponding position by a corresponding angle, and use the connecting rod to control the height of the guide plate in linkage, so as to realize the linkage adjustment of the smoke collection area and the negative pressure height.

[0058] Specifically, after the range hood is turned on, the current oil fume concentration information is obtained in real time through the oil fume concentration detection unit. The controller controls the smoke baffle to rotate to the corresponding position according to the oil fume concentration information. During the rotation of the smoke baffle, the connecting rod controls the height of the guide plate in linkage, so as to realize the linkage adjustment of the smoke collection area and the negative pressure height (guide plate height).

[0059] In one embodiment, such as Figure 6 As shown, S102, based on the oil fume concentration information, controls the smoke baffle to rotate to the corresponding position by a corresponding angle, specifically including the following steps:

[0060] S201, Based on the oil fume concentration information, determine the oil fume concentration level.

[0061] S202, based on the oil fume concentration level, control the smoke baffle to rotate to the corresponding position by the corresponding angle.

[0062] Specifically, oil fume concentration levels are set according to the concentration of oil fumes. Each oil fume concentration level has a corresponding baffle rotation angle. After determining the current oil fume concentration level based on the current concentration, the controller controls the baffle to rotate to the corresponding position by the corresponding angle.

[0063] It should be noted that if the current fume concentration level changes, the corresponding angle of the control fume baffle will be adjusted accordingly.

[0064] For example, when the oil fume concentration is less than a%, the oil fume concentration level is low, and the corresponding smoke baffle rotation angle is α1; when the oil fume concentration is greater than or equal to a% and less than or equal to b%, the oil fume concentration level is medium, and the corresponding smoke baffle rotation angle is α2; when the oil fume concentration is greater than or equal to b%, the oil fume concentration level is high, and the corresponding smoke baffle rotation angle is α3. Where a < b.

[0065] In this embodiment, by setting the fume concentration level and the corresponding baffle rotation angle, the controller adjusts the position of the baffle in real time according to the current fume concentration, thereby achieving precise control of the fume collection area and negative pressure height.

[0066] In one embodiment, such as Figure 7 As shown, the method further includes the following steps:

[0067] S301, Obtain the speed rating information of the fan.

[0068] S302, based on the oil fume concentration information and rotation speed level information, control the smoke baffle to rotate to the corresponding position by the corresponding angle.

[0069] Specifically, the controller acquires the current oil fume concentration information and the fan speed level information in real time, calculates the current comprehensive score based on the preset weights of the two, and controls the smoke baffle to rotate to the corresponding position according to the comprehensive score.

[0070] Optionally, the priority of oil fume concentration information and rotation speed level information can be set, and the smoke baffle can be rotated to the corresponding position according to the priority. For example, the oil fume concentration information can be set as the first priority and the rotation speed level information as the second priority. After adjusting the rotation angle of the smoke baffle to the first position according to the oil fume concentration information, when the fan speed is detected to increase, the smoke baffle will automatically adjust the rotation angle to increase based on the first position or the adjusted current position; when the fan speed is detected to decrease or stop rotating, the smoke baffle will automatically adjust the rotation angle to decrease based on the second position or the adjusted current position, or the entire smoke collection assembly will be stored in the smoke collection chamber.

[0071] It should be noted that the speed level information can also be set separately to control the rotation angle of the smoke baffle. That is, when the fan speed increases, the rotation angle of the smoke baffle will be automatically adjusted to increase. When the fan speed decreases or stops rotating, the rotation angle of the smoke baffle will be automatically adjusted to decrease or the smoke collection assembly will be completely stored in the smoke collection chamber.

[0072] For example, the fan speed level information includes slow speed, standard speed, and fast speed. Based on the oil fume concentration information and the speed level information, the current comprehensive score is calculated. If the comprehensive score is less than n, the controller controls the smoke baffle to rotate by an angle α4; if the comprehensive score is greater than or equal to n and less than m, the controller controls the smoke baffle to rotate by an angle α5; if the comprehensive score is greater than or equal to m, the controller controls the smoke baffle to rotate by an angle α6. Where n is less than m, and α4 < α5 < α6.

[0073] In this embodiment, the oil fume concentration information and the fan speed level information are combined to comprehensively determine the rotation angle of the smoke baffle, thereby further improving the precise control of the smoke collection area and negative pressure height.

[0074] In one embodiment, such as Figure 8 As shown, the method further includes the following steps:

[0075] S401, obtain the firepower level information of the stove.

[0076] S402, based on the oil fume concentration information, rotation speed level information, and firepower level information, control the smoke baffle to rotate to the corresponding position by the corresponding angle.

[0077] The oil fume concentration information can be combined with the firepower level information to control the rotation of the smoke baffle to the corresponding position by a specific angle. After adjusting the rotation angle of the smoke baffle to the second position based on the oil fume concentration information, when the knob selects high firepower, the smoke baffle automatically adjusts its rotation angle to increase based on the second position or the adjusted current position; when the knob selects low firepower or turns off the fire, the smoke baffle automatically adjusts its rotation angle to decrease based on the second position or the adjusted current position, or the entire smoke collection assembly is retracted into the smoke collection chamber.

[0078] It should be noted that the firepower level information can be used as a separate control condition for the rotation angle of the smoke baffle. That is, the correspondence between the firepower of the stove knob and the rotation angle of the smoke baffle is defined. When the knob is selected for high firepower, the smoke baffle is automatically adjusted to the rotation angle corresponding to high firepower. When the knob is selected for low firepower or when the fire is turned off, the smoke baffle is automatically adjusted to the rotation angle corresponding to low firepower, or the smoke collection assembly is completely stored in the smoke collection chamber 20.

[0079] Specifically, the oil fume concentration information can also be combined with the rotation speed level information and the firepower level information to control the smoke baffle to rotate to the corresponding position by a corresponding angle. That is, the rotation angle of the smoke baffle is determined based on the oil fume concentration information, firepower level information, rotation speed level information, and their respective weights.

[0080] Optionally, in addition to setting the weights of the fume concentration information, rotation speed level information, and firepower level information to adjust the rotation angle of the smoke baffle, a priority relationship can also be set for these information. The rotation angle of the smoke baffle can be adjusted according to the priority. For example, the fume concentration information is the first priority, and the rotation speed level information and firepower level information are the second priority. After adjusting the rotation angle of the smoke baffle to the third position based on the current fume concentration information, the rotation speed level information and firepower level information of the fan are weighted and summed to obtain an adjustment score. Based on the adjustment score, the angle of the smoke baffle in the third position or the adjusted current position is finely adjusted to improve the adjustment accuracy of the smoke collection area and negative pressure height.

[0081] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for linkage control of a smoke-collecting component of a range hood, the range hood comprising a fan, a smoke-collecting component, and a smoke concentration detection unit, wherein a smoke inlet is provided below the fan, the smoke-collecting component comprises a smoke baffle, a guide plate, and a connecting rod, the smoke baffle is rotatably disposed at the smoke inlet, the smoke concentration detection unit is used to detect smoke concentration information, the bottom end of the guide plate is movably connected to the inner wall of the smoke baffle, and the top end of the guide plate is movably connected to the connecting rod, characterized in that... The method includes: Obtain the current oil fume concentration information detected by the oil fume concentration detection unit; Based on the oil fume concentration information, the smoke baffle is rotated to the corresponding position by a corresponding angle, and the height of the guide plate is controlled by the connecting rod to achieve the linkage adjustment of the smoke collection area and the negative pressure height.

2. The method according to claim 1, characterized in that, The step of controlling the smoke baffle to rotate to the corresponding position by a corresponding angle based on the oil fume concentration information includes: Based on the oil fume concentration information, the oil fume concentration level is determined; Based on the oil fume concentration level, the smoke baffle is controlled to rotate to the corresponding position by the corresponding angle.

3. The method according to claim 2, characterized in that, The oil fume concentration detection unit includes an image acquisition unit, which acquires images containing oil fumes and uses an image detection algorithm to obtain oil fume concentration information in the images.

4. The method according to claim 1, characterized in that, The method further includes: Obtain the speed rating information of the fan; Based on the oil fume concentration information and rotation speed level information, the smoke baffle is controlled to rotate to the corresponding position by the corresponding angle.

5. The method according to claim 4, characterized in that, The method further includes: Obtain the firepower level information of the stove; Based on the information on oil fume concentration, rotation speed, and firepower, the smoke baffle is controlled to rotate to the corresponding position by the corresponding angle.

6. The method according to claim 5, characterized in that, Based on the information on oil fume concentration, rotation speed level, and firepower level, and their respective weights, the rotation angle of the smoke baffle is determined.

7. A range hood, characterized in that, Includes fan housing, smoke collection chamber, and smoke collection assembly; The fan box is used to house the fan, and the smoke collection chamber is located below the fan box. The smoke collection chamber is provided with a smoke inlet for oil fumes to enter. The smoke collection assembly includes a smoke baffle, a flow guide plate, and a connecting rod; The smoke baffle is rotatably mounted at the smoke inlet; The bottom end of the guide plate is movably connected to the inner wall of the smoke baffle, and the guide plate is movably connected to the connecting rod; The range hood also includes an oil fume concentration detection unit and a controller. The oil fume concentration detection unit is electrically connected to the controller. The oil fume concentration detection unit is used to detect oil fume concentration information. The controller is used to acquire the current oil fume concentration information detected by the oil fume concentration detection unit. Based on the oil fume concentration information, the controller controls the smoke baffle to rotate to the corresponding position by a corresponding angle, and controls the height of the guide plate in a coordinated manner to achieve the linkage adjustment of the smoke collection area and the negative pressure height.

8. The range hood according to claim 7, characterized in that, The controller determines the oil fume concentration level based on the oil fume concentration information; based on the oil fume concentration level, it controls the smoke baffle to rotate to the corresponding position by the corresponding angle.

9. The range hood according to claim 7, characterized in that, The range hood also includes a controller, which is used to acquire the fan speed level information or the stove firepower level information; based on the speed level information or firepower level information, the controller controls the smoke baffle to rotate to the corresponding position by a corresponding angle.

Images