Range hood and adaptive control method
By adjusting the telescopic smoke baffle and drive mechanism of the ultra-thin range hood, the problem of poor smoke extraction caused by cookware or visual interference has been solved, achieving efficient smoke extraction even in areas with limited negative pressure smoke collection, thus improving user experience and safety performance.
Patent Information
- Application Number
- CN202410934860.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2044-07-12
AI Technical Summary
Existing ultra-thin range hoods suffer from poor smoke extraction performance and negatively impact user experience due to factors such as the low position of the smoke inlet and the obstruction of cookware or line of sight, which restricts the extension of the smoke baffle.
It adopts a telescopic smoke baffle and a drive mechanism, and by adjusting the internal and external flow fields of the smoke inlet channel, it prevents the smoke baffle from flipping, ensures a negative pressure smoke collection area, and enhances the smoke extraction effect.
Even with limited negative pressure smoke collection areas, it can still ensure good smoke extraction performance, avoid performance degradation, and improve safety and applicability.
Smart Images
Figure CN118935476B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of kitchen equipment, in particular to an extractor hood and an adaptive control method. BACKGROUND
[0002] With the development of science and technology and the progress of society, people's requirements for the quality of life are also constantly improving. As an important part of home life, the intelligent and humanized design of kitchen electrical equipment has become an important research direction at present. Among them, the design and function optimization of the extractor hood, as one of the essential electrical appliances in the kitchen, has always been an important task in the kitchen electrical industry. In recent years, with the popularity of ultra-thin design, the design of the extractor hood body, especially the smoke collection box, is becoming thinner and thinner, which can save kitchen space and improve the overall aesthetics of the kitchen.
[0003] For an ultra-thin extractor hood, its ultra-thin smoke collection box is in a relatively far state from the pot when it is attached to the wall, and the smoke inlet is usually arranged in the lower region of the smoke collection box, which causes the smoke inlet to be usually far away from the pot, unlike the traditional top suction or side suction type extractor hood, whose smoke inlet is located above the pot, having strong oil fume capturing ability. Therefore, some existing extractor hoods are provided with a flip baffle to reduce the negative pressure area and improve the oil fume suction effect, and some extractor hoods are further provided with an extension baffle on the basis of the flip baffle to expand the smoke gathering area and enhance the oil fume suction effect.
[0004] However, although the existing extractor hood can reduce the negative pressure area and expand the smoke gathering area by arranging the baffle to enhance the oil fume suction effect to a certain extent, the baffle covering the smoke inlet is prone to hitting the pot during the flip opening process due to the low position of the smoke inlet in the vertical direction. In addition, the existing extractor hood can only control the outflow field outside the smoke collection box by adjusting the flip angle or extension size of the baffle, and cannot regulate the inflow field inside the smoke collection box. If the extension of the baffle is limited due to factors such as pot or line of sight interference, the oil fume suction effect will be poor due to the lack of sufficient smoke gathering negative pressure area, resulting in a decrease in the performance of the extractor hood. SUMMARY
[0005] Therefore, it is necessary to solve the problem that the existing extractor hood is prone to poor oil fume suction effect due to the lack of sufficient smoke gathering negative pressure area when the extension of the baffle is limited due to factors such as pot or line of sight interference, which seriously affects the user's experience. The present application provides an extractor hood and an adaptive control method, which can simultaneously regulate the inflow field and outflow field of the smoke inlet, and avoid the decrease in the performance of the extractor hood.
[0006] According to one aspect of the present application, one embodiment of the present application provides an extractor hood, comprising:
[0007] The fan system comprises a fan box and a fan body arranged in the fan box.
[0008] The smoke collecting box is arranged below the fan box, and has a front smoke inlet, a front opening above the front smoke inlet, and a smoke passage communicating the front smoke inlet with the fan box.
[0009] The smoke blocking assembly comprises a telescopic smoke blocking plate arranged in the smoke passage and corresponding to the front opening, and a driving mechanism drivingly connected with the telescopic smoke blocking plate; the telescopic smoke blocking plate is driven by the driving mechanism to extend or retract from the front opening, so as to simultaneously regulate the outer flow field and the inner flow field of the smoke passage.
[0010] In an embodiment of the present application, the telescopic smoke blocking plate is capable of switching between a first state and a second state under the driving of the driving mechanism; when the telescopic smoke blocking plate is in the first state, the telescopic smoke blocking plate is completely retracted from the front opening into the smoke passage; when the telescopic smoke blocking plate is in the second state, the telescopic smoke blocking plate is partially extended from the front opening into the smoke passage.
[0011] In an embodiment of the present application, the telescopic smoke blocking plate is capable of being completely extended from the front opening into the smoke passage under the driving of the driving mechanism, so that the telescopic smoke blocking plate is in a third state.
[0012] In an embodiment of the present application, the smoke collecting box comprises a front panel having the front opening, a back panel arranged in a spaced-apart manner with the front panel, a pair of side panels fixedly connected with the left and right sides of the front panel and the back panel and oppositely arranged to enclose the smoke passage, and a bottom panel fixedly connected with the bottom edges of the front panel and the back panel.
[0013] In an embodiment of the present application, the telescopic smoke blocking plate comprises a plurality of smoke blocking plate segments slidably connected in sequence, and the plurality of smoke blocking plate segments are unfolded or gathered under the action of the driving mechanism to extend or retract into the smoke passage through the front opening.
[0014] In an embodiment of the present application, the telescopic smoke blocking plate comprises a first smoke blocking plate segment slidably inserted into the front opening, a second smoke blocking plate segment slidably inserted into the first smoke blocking plate segment, and a third smoke blocking plate segment slidably inserted into the second smoke blocking plate segment; the driving mechanism comprises a telescopic push rod arranged in the smoke collecting box and connected with the third smoke blocking plate segment.
[0015] In an embodiment of the present application, the first and second smoke baffle segments each have a hollow structure; the first push rod motor is connected to the third smoke baffle segment in sequence through the first and second smoke baffle segments.
[0016] In an embodiment of the present application, the telescopic smoke baffle further comprises a cover plate matched with the front opening, the cover plate being connected to the third smoke baffle segment and arranged in parallel with the front panel to block the front opening.
[0017] In an embodiment of the present application, the telescopic smoke baffle comprises a first smoke baffle segment slidably inserted into the front opening, a second smoke baffle segment slidably sleeved outside the first smoke baffle segment, and a third smoke baffle segment slidably sleeved outside the second smoke baffle segment; the drive mechanism comprises a telescopic push rod arranged in the smoke collection box and connected to the third smoke baffle segment.
[0018] In an embodiment of the present application, the telescopic smoke baffle comprises a first smoke baffle segment, a second smoke baffle segment, and a third smoke baffle segment slidably stacked in sequence; wherein the first smoke baffle segment is slidably connected to the front panel, and the third smoke baffle segment is drivingly connected to the drive mechanism.
[0019] In an embodiment of the present application, the first, second, and third smoke baffle segments are sequentially provided with limit plates to abut against each other when unfolded to the limit position.
[0020] In an embodiment of the present application, the drive mechanism is a pair of telescopic guide rails arranged in the smoke collection box, and the two telescopic guide rails are arranged on the two side walls of the third smoke baffle segment, respectively.
[0021] In an embodiment of the present application, the front smoke inlet is located between the bottom plate and the front panel; and the front opening is arranged on the front panel adjacent to the front smoke inlet.
[0022] In an embodiment of the present application, the smoke collection box further comprises a flow guide plate matched with the front smoke inlet, the flow guide plate being rotatably connected to the bottom plate to switch between a closed state and a flow guiding state; when the flow guide plate is in the closed state, the flow guide plate is flipped forward relative to the bottom plate to close the front smoke inlet; when the flow guide plate is in the flow guiding state, the flow guide plate is flipped backward into the smoke inlet channel relative to the bottom plate to open the front smoke inlet.
[0023] In an embodiment of the present application, a lower edge of the baffle is pivotally connected to a front edge of the bottom plate, so that the baffle extends vertically upward from the front edge of the bottom plate to close the front smoke inlet when the baffle is in the closed state, and the baffle extends obliquely upward from the front edge of the bottom plate to be in the smoke inlet channel when the baffle is in the guiding state.
[0024] According to another aspect of the present application, another embodiment of the present application further provides a self-adaptive control method, comprising:
[0025] detecting oil fume data, fan rotating speed and / or fire power of a stove knob selection in real time to collect oil fume signals, rotating speed signals and / or fire power signals correspondingly;
[0026] judging current oil fume grade, current rotating speed grade and / or current fire power grade in real time based on the collected oil fume signals, rotating speed signals and / or fire power signals correspondingly; and
[0027] controlling the telescopic baffle to extend forward to a position corresponding to the current oil fume grade, the current rotating speed grade and / or the current fire power grade based on the current oil fume grade, the current rotating speed grade and / or the current fire power grade.
[0028] In summary, the telescopic baffle of the range hood of the present application can extend or retract from the front opening without turning under the driving of the driving mechanism, which can avoid the phenomenon of hitting a pot and help to improve safety performance and application range. In particular, when the telescopic baffle is limited in extension due to factors such as avoiding hitting a pot or interfering with the user's line of sight, the telescopic baffle extends from the front opening to form a limited negative pressure smoke gathering area at the front smoke inlet, thereby controlling the outflow field of the smoke inlet channel. At the same time, part of the telescopic baffle is still left in the smoke inlet channel, resulting in a smaller minimum flow area of the smoke inlet channel than the flow area of the channel outside the smoke inlet channel where the baffle is arranged, so that the oil fume undergoes a Venturi effect when entering the smoke inlet channel through the front smoke inlet, thereby increasing the flow rate of the oil fume in the smoke inlet channel and controlling the inflow field of the smoke inlet channel, so that better oil fume suction effect can be ensured and the performance of the range hood can be improved even if the negative pressure smoke gathering area is limited. BRIEF DESCRIPTION OF DRAWINGS
[0029] Figure 1 a perspective view of a range hood according to an embodiment of the present application;
[0030] Figure 2 a state diagram showing the telescopic baffle of the range hood according to the above embodiment of the present application in a first state;
[0031] Figure 3 Fig. 6 shows a state diagram of the telescopic smoke baffle in the range hood according to the above embodiment of the present application in the second state;
[0032] Figure 4 Fig. 7 shows a state diagram of the telescopic smoke baffle in the range hood according to the above embodiment of the present application in the third state;
[0033] Figure 5 Fig. 8 shows a first variant of the range hood according to the above embodiment of the present application;
[0034] Figure 6 Fig. 9 shows a first variant of the telescopic smoke baffle in the range hood according to the above embodiment of the present application;
[0035] Figure 7 Fig. 10 shows a second variant of the telescopic smoke baffle in the range hood according to the above embodiment of the present application;
[0036] Figure 8 Fig. 11 shows a second variant of the range hood according to the above embodiment of the present application;
[0037] Figure 9 Fig. 12 shows a flow diagram of the adaptive control method according to the first embodiment of the present application;
[0038] Figure 10 Fig. 13 shows a flow diagram of the adaptive control method according to the second embodiment of the present application;
[0039] Figure 11 Fig. 14 shows a flow diagram of the adaptive control method according to the third embodiment of the present application.
[0040] Main element symbol explanation: 1, range hood; 10, fan system; 11, fan box; 20, smoke collecting box; 201, forward smoke inlet; 202, forward opening; 203, smoke inlet passage; 21, front panel; 22, back panel; 23, side panel; 24, bottom panel; 25, flow guide panel; 30, smoke baffle assembly; 31, telescopic smoke baffle; 311, first smoke baffle segment; 312, second smoke baffle segment; 313, third smoke baffle segment; 314, cover panel; 315, limiting panel; 32, driving mechanism; 321, telescopic push rod; 322, telescopic guide rail.
[0041] The above main element symbol explanation is further explained in detail in combination with the drawings and specific embodiments. DETAILED DESCRIPTION
[0042] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, the specific embodiments of the present application will be described below in detail with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in many different ways from what is described herein, and should not be construed as being limited to the embodiments set forth herein, but should be understood to include all possible embodiments.
[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for the purpose of facilitating the description of the present application and simplifying the description, and therefore should not be construed as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application.
[0044] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implying a specified number of technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified.
[0045] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0046] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or it can only mean that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or it can only mean that the horizontal height of the first feature is less than that of the second feature.
[0047] It is to be understood that when an element such as a layer, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. It will be understood that, when a member is referred to as being "coupled" or "connected" to another member, it can be directly coupled or connected to the other member or intervening members can be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.
[0048] It is to be understood that when an element such as a layer, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. It will be understood that, when a member is referred to as being "coupled" or "connected" to another member, it can be directly coupled or connected to the other member or intervening members can be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.
[0049] Specifically, referring to FIG. 1, Figures 1 to 4 As shown in FIG. 1, one embodiment of the present application provides a range hood 1, which can include a fan system 10, a smoke collecting box 20 and a smoke blocking assembly 30. The fan system 10 includes a fan box 11 and a fan body (not shown in the figure) arranged in the fan box 11. The smoke collecting box 20 is arranged below the fan box 11, and the smoke collecting box 20 has a front smoke inlet 201, a front opening 202 above the front smoke inlet 201, and a smoke inlet channel 203 communicating the front smoke inlet 201 with the fan box 11. The smoke blocking assembly 30 includes a telescopic smoke blocking plate 31 arranged in the smoke inlet channel 203 and corresponding to the front opening 202, and a driving mechanism 32 drivingly connected with the telescopic smoke blocking plate 31; the telescopic smoke blocking plate 31 is driven by the driving mechanism 32 to extend out of or retract into the front opening 202, so as to simultaneously regulate the outer flow field and the inner flow field of the smoke inlet channel 203. It can be understood that the inner flow field referred to in the present application refers to the flow field located in the smoke collecting box 20 (i.e. in the smoke inlet channel 203); the outer flow field referred to in the present application refers to the flow field located outside the smoke collecting box 20 (i.e. outside the smoke inlet channel 203).
[0050] In this way, the telescopic baffle 31 can avoid the phenomenon of hitting the pot and improve the safety performance and the application range when being extended or retracted from the front opening 202 under the driving of the driving mechanism 32 without turning over. In particular, when the telescopic baffle 31 is limited in extension due to the factors such as avoiding hitting the pot or interfering with the user's line of sight of the range hood 1, the telescopic baffle 31 is partially extended from the front opening 202 to form a limited negative pressure smoke gathering area at the front smoke inlet 201, so as to control the outflow field of the smoke inlet channel 203. At the same time, the telescopic baffle 31 is still partially left in the smoke inlet channel 203, so that the minimum flow area of the smoke inlet channel 203 is smaller than the flow area of the channel with the baffle arranged outside the smoke inlet channel, so that the oil fume has a Venturi effect when entering the smoke inlet channel 203 through the front smoke inlet 201, the flow rate of the oil fume in the smoke inlet channel 203 is increased, the inner flow field of the smoke inlet channel 203 is controlled, and thus the oil smoke effect is still good under the condition that the negative pressure smoke gathering area is limited, and the performance of the range hood is avoided.
[0051] More specifically, as shown in Figure 2 and Figure 3 , the telescopic baffle 31 can be switched between the first state and the second state under the driving of the driving mechanism 32. When the telescopic baffle 31 is in the first state, the telescopic baffle 31 is completely retracted into the smoke inlet channel 203 from the front opening 202, so as to better hide the telescopic baffle 31 and ensure the ultra-thin structure and overall aesthetics of the range hood 1. When the telescopic baffle 31 is in the second state, the telescopic baffle 31 is partially extended from the front opening 202 into the smoke inlet channel 203, so that the telescopic baffle 31 is still partially left in the smoke inlet channel 203, so as to simultaneously regulate the inner flow field and the outer flow field of the smoke inlet channel 203.
[0052] Optionally, as shown in Figure 4 , the telescopic baffle 31 can be completely extended from the front opening 202 into the smoke inlet channel 203 under the driving of the driving mechanism 32, so that the telescopic baffle 31 is in the third state. At this time, the telescopic baffle 31 is completely outside the smoke inlet channel 203, so as to form a larger negative pressure smoke gathering area at the front smoke inlet 201, and facilitate the adaptation to the scene with larger extension space and larger oil fume.
[0053] According to the above embodiments of the present application, as Figures 1 to 4As shown, the smoke collecting box 20 comprises a front panel 21 provided with the front opening 202, a back panel 22 arranged in spaced relation with the front panel 21, a pair of side panels 23 fixedly connected with the left and right sides of the front panel 21 and the back panel 22 and oppositely arranged to enclose the smoke inlet passage 203, and a bottom panel 24 fixedly connected with the bottom edges of the front panel 21 and the back panel 22.
[0054] Optionally, as shown, Figures 1 to 4 As shown, the front smoke inlet 201 is located between the bottom panel 24 and the front panel 21, and the front opening 202 is arranged on the front panel 21 adjacent to the front smoke inlet 201, so as to ensure that the position of the front smoke inlet 201 is as low as possible to be close to the cooking bench, while making the telescopic smoke baffle 31 as close as possible to the front smoke inlet 201 after extending out of the smoke inlet passage 203, avoiding the accumulation of oil fume between the telescopic smoke baffle 31 and the front smoke inlet 201, and facilitating to improve the oil fume suction effect. For example, the vertical distance between the front opening 202 and the bottom panel 24 is less than or equal to one third of the vertical length of the smoke inlet passage 203, so as to limit the telescopic smoke baffle 31 within the lower region of the smoke inlet passage 203, so that the negative pressure smoke gathering area is as low as possible, the oil fume suction effect is improved, and meanwhile, the front smoke inlet 201 is prevented from being too large in opening to affect the aesthetics.
[0055] Optionally, as shown, Figure 2 As shown, when the telescopic smoke baffle 31 is in the first state, the telescopic smoke baffle 31 is located within the smoke inlet passage 203 and arranged in spaced relation with the back panel 22 of the smoke collecting box 20, so as to form a gap between the telescopic smoke baffle 31 and the back panel 22 for the oil fume to pass through. In this way, when the telescopic smoke baffle 31 is in the first state, the range hood 1 can still perform the oil fume suction function, facilitating to adapt to the small-flow oil fume scene.
[0056] Optionally, as shown, Figures 2 to 4 As shown, the telescopic smoke baffle 31 comprises a plurality of smoke baffle segments slidably connected in sequence, which are unfolded or gathered by each other under the action of the driving mechanism 32 to extend out of or retract into the smoke inlet passage 203 through the front opening 202, so that the telescopic smoke baffle 31 is switched between the first state, the second state and the third state to meet different oil fume scenes. It can be understood that the plurality of smoke baffle segments mentioned in the present application can be two or more smoke baffle segments, preferably three smoke baffle segments.
[0057] It is worth noting that the plurality of smoke baffle segments in the telescopic smoke baffle 31 of the present application can be but not limited to implemented as smoke baffles stacked or sleeved / plugged with each other, which can have various unfolded forms as long as they can be unfolded with each other to extend into the smoke passage 203 to form a larger smoke baffle. In addition, the driving mechanism 32 of the present application can be implemented as a push rod mechanism or a guide rail mechanism and its combination mechanism, or other common driving mechanisms. Those skilled in the art can select a suitable driving mechanism according to the structure of the telescopic smoke baffle 31 described above, and the present application will not be described hereinafter.
[0058] Exemplarily, as shown in Figures 2 to 4 , the telescopic smoke baffle 31 can include a first smoke baffle segment 311 slidably plugged into the front opening 202, a second smoke baffle segment 312 slidably plugged into the first smoke baffle segment 311, and a third smoke baffle segment 313 slidably plugged into the second smoke baffle segment 312; the driving mechanism 32 includes a telescopic push rod 321 arranged in the smoke collecting box 20 and connected with the third smoke baffle segment 313, so as to make the first smoke baffle segment 311, the second smoke baffle segment 312 and the third smoke baffle segment 313 unfolded or gathered with each other under the action of the telescopic push rod 321. It can be understood that the telescopic push rod 321 mentioned in the present application can be but not limited to implemented as, for example, an electric push rod, a pneumatic push rod or a hydraulic push rod, etc., so as to realize automatic driving.
[0059] Optionally, as shown in Figures 2 to 4 , the first smoke baffle segment 311, the second smoke baffle segment 312 and the third smoke baffle segment 313 all have a hollow structure to form a hollow smoke baffle; at this time, the telescopic push rod 321 can be connected to the front side wall of the third smoke baffle segment 313 after passing through the first smoke baffle segment 311 and the second smoke baffle segment 312 in sequence. It can be understood that in other examples of the present application, the third smoke baffle segment 313 can also have a solid structure, and at this time the telescopic push rod 321 can be connected to the rear side wall of the third smoke baffle segment 313 after passing through the first smoke baffle segment 311 and the second smoke baffle segment 312 in sequence.
[0060] Optionally, as shown in Figures 2 to 4 , the telescopic smoke baffle 31 can further include a cover plate 314 matched with the front opening 202, the cover plate 314 being connected to the third smoke baffle segment 313 and arranged in parallel with the front panel 21 of the smoke collecting box 20, so that when the telescopic smoke baffle 31 is in the first state, the cover plate 314 blocks the front opening 202, avoiding oil fume leakage while maintaining the overall appearance of the range hood. It can be understood that the cover plate 314 can also be provided with an interactive interface so as to be controlled by the user.
[0061] It is worth mentioning that, in the first variant embodiment of the present application, as shown in Figure 5 the first smoke baffle segment 311, the second smoke baffle segment 312 and the third smoke baffle segment 313 can all have a hollow structure; at the same time, the second smoke baffle segment 312 is slidably sleeved outside the first smoke baffle segment 311, and the third smoke baffle segment 313 is slidably sleeved outside the second smoke baffle segment 312. In this way, the telescopic push rod 321 can still pass from the inside of the first smoke baffle segment 311 and the second smoke baffle segment 312 to connect with the third smoke baffle segment 313, and the required unfolding and gathering requirements can still be achieved. It can be understood that, in other examples of the present application, the first smoke baffle segment 311 can also have a solid structure, at which time the telescopic push rod 321 does not need to pass from the inside of the first smoke baffle segment 311 and the second smoke baffle segment 312, but directly connects with the third smoke baffle segment 313 outside the first smoke baffle segment 311 and the second smoke baffle segment 312, and the required unfolding and gathering requirements can still be achieved.
[0062] It is worth noting that, in the first variant example of the present application, as shown in Figure 6 the first smoke baffle segment 311, the second smoke baffle segment 312 and the third smoke baffle segment 313 all have a solid structure to be implemented as solid plates; at the same time, the first smoke baffle segment 311, the second smoke baffle segment 312 and the third smoke baffle segment 313 are slidably stacked in sequence, wherein the first smoke baffle segment 311 is slidably connected to the front panel 21 of the smoke collecting box 20, and the third smoke baffle segment 313 is drivingly connected to the driving mechanism 32, and can still be unfolded or gathered with each other under the action of the driving mechanism 32.
[0063] In addition, in order to prevent the first smoke baffle segment 311, the second smoke baffle segment 312 and the third smoke baffle segment 313 from being separated from each other during unfolding, the first smoke baffle segment 311 and the second smoke baffle segment 312 are provided with a limiting structure at the limit unfolding position, and the second smoke baffle segment 312 and the third smoke baffle segment 313 are also provided with a limiting structure at the limit unfolding position. For example, in one variant example of the present application, as shown in Figure 7 the first smoke baffle segment 311, the second smoke baffle segment 312 and the third smoke baffle segment 313 are respectively provided with a limiting plate 315 to abut against each other when unfolded to the limit position, avoiding being separated from each other. It can be understood that the limiting structure mentioned in the present application can be implemented as a conventional limiting block or a limiting groove, which will not be described herein.
[0064] In addition, in order to prevent the plurality of smoke baffle segments from being misaligned when being unfolded or gathered, the telescopic smoke baffle 31 of the present application can be provided with guide rails between adjacent two smoke baffle segments, so as to avoid the smoke baffle segments from being stuck. For example, in the second variant embodiment of the present application, as shown in Figure 8 the driving mechanism 32 is implemented as a pair of telescopic guide rails 322 arranged on the smoke collecting box 20, and the two telescopic guide rails 322 are arranged on the two side walls of the third smoke baffle segment 313, so as to achieve smooth unfolding or gathering by means of the telescopic guide rails 322. It can be understood that the telescopic guide rails 322 mentioned in the present application can be implemented as an electric guide rail mechanism to achieve automatic telescoping, or as a manual guide rail mechanism to achieve manual telescoping. In addition, in the above-mentioned embodiments and various variant embodiments of the present application, as shown in Figure 4 、 Figure 5 and Figure 8 the first smoke baffle segment 311, the second smoke baffle segment 312 and the third smoke baffle segment 313 can also be respectively provided with limit plates 315 to abut against each other when unfolded to the limit position, so as to avoid being separated from each other, which will not be described in detail herein.
[0065] According to the above-mentioned embodiments of the present application, as shown in Figures 1 to 8 the smoke collecting box 20 can further include a flow guide plate 25 matched with the front smoke inlet 201, and the flow guide plate 25 is rotatably connected to the bottom plate 24 to switch between a closed state and a flow guiding state; when the flow guide plate 25 is in the closed state, the flow guide plate 25 is flipped forward relative to the bottom plate 24 to close the front smoke inlet 201; when the flow guide plate 25 is in the flow guiding state, the flow guide plate 25 is flipped backward into the smoke inlet channel 203 relative to the bottom plate 24, so as to guide the oil fume sucked in through the front smoke inlet 201 while opening the front smoke inlet 201, which helps to further enhance the oil fume suction effect.
[0066] It is worth noting that since the flow guide plate 25 of the present application is flipped only in the smoke inlet channel 203 when switching between the closed state and the flow guiding state, and does not flip out of the smoke inlet channel 203 through the front smoke inlet 201, the flow guide plate 25 of the present application does not have the problem of hitting the pot when closing or opening the front smoke inlet 201.
[0067] Optionally, as shown in Figures 1 to 8As shown, the lower edge of the baffle 25 is pivotally connected to the front edge of the bottom plate 24, so that when the baffle 25 is in the closed state, the baffle 25 extends vertically upward from the front edge of the bottom plate 24 to flush with the front panel 21 to close the front smoke inlet 201; and when the baffle 25 is in the flow guiding state, the baffle 25 extends obliquely upward from the front edge of the bottom plate 24 to be inside the smoke inlet channel 203, playing a better flow guiding role. It can be understood that the baffle 25 can be flipped relative to the bottom plate 24 by a driving mechanism to switch between the closed state and the flow guiding state, for example, when the range hood 1 is in a non-working state, the baffle 25 is switched to the closed state to close the front smoke inlet 201 to prevent foreign matter from entering the range hood 1; and when the range hood 1 is in a working state, the baffle 25 is switched to the flow guiding state to improve the oil fume suction effect.
[0068] It is worth mentioning that, according to another aspect of the present application, as Figure 9 shown, the first embodiment of the present application can further provide an adaptive control method, which can include the steps of:
[0069] S110: Real-time detection of oil fume data to collect oil fume signals;
[0070] S120: Real-time judgment of the current oil fume level based on the collected oil fume signals; and
[0071] S130: Adaptive control of the telescopic smoke baffle to extend forward to a position corresponding to the current oil fume level based on the current oil fume level.
[0072] It is worth noting that the corresponding relationship between the position of the telescopic smoke baffle extending forward and the oil fume level can be pre-built in the control system of the range hood according to experience or test results.
[0073] Optionally, the length of the telescopic smoke baffle extending forward is positively correlated with the high and low of the oil fume level; that is, the higher the current oil fume level, the longer the length of the telescopic smoke baffle extending forward; the lower the current oil fume level, the shorter the length of the telescopic smoke baffle extending forward.
[0074] In addition, during the operation of the range hood, if a change in the oil fume level is detected, the adaptive control method of the present application can also synchronously control the telescopic smoke baffle to extend forward to a position corresponding to the changed oil fume level, which will not be described herein. It can be understood that the present application can but is not limited to using oil fume recognition devices such as infrared sensors or image sensors to detect oil fume concentration data to accurately collect the current oil fume signal and accurately judge the current oil fume level for accurate execution of the subsequent adaptive control step.
[0075] Similarly, asFigure 10 As shown, the second embodiment of the present application can further provide an adaptive control method, which can include steps of:
[0076] S210: detecting the fan speed in real time to collect a speed signal;
[0077] S220: judging a current speed level in real time based on the collected speed signal; and
[0078] S230: adaptively controlling the telescopic smoke baffle to extend forward to a position corresponding to the current speed level based on the current speed level.
[0079] Notably, the corresponding relationship between the position of the telescopic smoke baffle extending forward and the speed level can be pre-embedded in the control system of the range hood according to experience or test results.
[0080] Optionally, the length of the telescopic smoke baffle extending forward is positively correlated with the level of the speed level; that is, the higher the current speed level is, the longer the length of the telescopic smoke baffle extending forward is; the lower the current speed level is, the shorter the length of the telescopic smoke baffle extending forward is. For example, when the fan speed becomes larger, the length of the telescopic smoke baffle extending forward becomes larger; when the fan speed becomes smaller, the length of the telescopic smoke baffle extending forward becomes smaller; when the fan body stops rotating, the telescopic smoke baffle is gathered to be entirely hidden in the smoke collecting box.
[0081] In addition, the adaptive control method of the present application can be linked to control the fire of the stove. Specifically, as shown, the adaptive control method of the third embodiment of the present application can include steps of: Figure 11
[0082] S310: detecting the fire selected by the stove knob in real time to collect a fire signal;
[0083] S320: judging a current fire level in real time based on the collected fire signal; and
[0084] S330: adaptively controlling the telescopic smoke baffle to extend forward to a position corresponding to the current fire level based on the current fire level.
[0085] More specifically, the length of the telescopic smoke baffle extending forward is positively correlated with the level of the fire level; that is, the higher the current fire level is, the longer the length of the telescopic smoke baffle extending forward is; the lower the current fire level is, the shorter the length of the telescopic smoke baffle extending forward is. For example, when the fire selected by the stove knob becomes larger, the length of the telescopic smoke baffle extending forward becomes larger; when the fire selected by the stove knob becomes smaller, the length of the telescopic smoke baffle extending forward becomes smaller; when the stove knob is turned off, the telescopic smoke baffle is gathered to be entirely hidden in the smoke collecting box.
[0086] It is worth noting that the adaptive control method of the present application can also be based on the oil fume level, the speed level and the firepower level at the same time, such as defining the priority relationship among the three levels or establishing a weighted control relationship for joint control, so as to more accurately absorb oil fume, which will not be described herein.
[0087] The technical features of the above embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.
[0088] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application.
Claims
1. A range hood, characterized by The fan system comprises a fan box and a fan body arranged in the fan box. The smoke collecting box is arranged below the fan box and has a front smoke inlet, a front opening above the front smoke inlet, and a smoke passage communicating the front smoke inlet with the fan box. The smoke blocking assembly comprises a telescopic smoke blocking plate arranged in the smoke passage and corresponding to the front opening, and a driving mechanism drivingly connected with the telescopic smoke blocking plate. The telescopic smoke blocking plate is driven by the driving mechanism to extend or retract from the front opening, so as to simultaneously regulate the outer flow field and the inner flow field of the smoke passage. The telescopic smoke blocking plate is switched between the first state and the second state by the driving mechanism. When the telescopic smoke blocking plate is in the first state, the telescopic smoke blocking plate is completely retracted into the smoke passage from the front opening. When the telescopic smoke blocking plate is in the second state, the telescopic smoke blocking plate is partially extended into the smoke passage from the front opening. The telescopic smoke blocking plate is driven by the driving mechanism to be completely extended into the smoke passage from the front opening, so that the telescopic smoke blocking plate is in the third state. The smoke collecting box comprises a front panel having the front opening, a back panel arranged in parallel with the front panel, a pair of side panels fixedly connected with the left and right sides of the front panel and the back panel and arranged in opposite to each other to enclose the smoke passage, and a bottom panel fixedly connected with the bottom edges of the front panel and the back panel.
2. The range hood according to claim 1, characterized in that The telescopic smoke blocking plate comprises a plurality of smoke blocking plate segments slidably connected in sequence, which are unfolded or gathered by the driving mechanism to extend or retract into the smoke passage through the front opening.
3. The range hood according to claim 1 or 2, characterized in that The telescopic smoke blocking plate comprises a first smoke blocking plate segment slidably inserted into the front opening, a second smoke blocking plate segment slidably inserted into the first smoke blocking plate segment, and a third smoke blocking plate segment slidably inserted into the second smoke blocking plate segment; the driving mechanism comprises a telescopic push rod arranged in the smoke collecting box and connected with the third smoke blocking plate segment.
4. The range hood according to claim 3, characterized in that The first smoke blocking plate segment and the second smoke blocking plate segment both have a hollow structure; the telescopic push rod is connected to the third smoke blocking plate segment in sequence through the first smoke blocking plate segment and the second smoke blocking plate segment.
5. The range hood according to claim 3, wherein The telescopic smoke blocking plate further comprises a cover plate matched with the front opening, which is connected to the third smoke blocking plate segment and arranged in parallel with the front panel to block the front opening.
6. The range hood according to claim 5, wherein The telescopic smoke blocking plate comprises a first smoke blocking plate segment slidably inserted into the front opening, a second smoke blocking plate segment slidably sleeved outside the first smoke blocking plate segment, and a third smoke blocking plate segment slidably sleeved outside the second smoke blocking plate segment; the driving mechanism comprises a telescopic push rod arranged in the smoke collecting box and connected with the third smoke blocking plate segment.
7. The range hood according to claim 5, wherein 8. The range hood according to claim 3, wherein 9. The range hood according to claim 3, wherein The telescopic smoke baffle comprises a first smoke baffle section, a second smoke baffle section and a third smoke baffle section which are sequentially and slidably stacked; wherein the first smoke baffle section is slidably connected to the front panel, and the third smoke baffle section is drivingly connected to the driving mechanism.
10. The range hood according to claim 9, characterized in that The first smoke baffle section, the second smoke baffle section and the third smoke baffle section are sequentially provided with limit plates to abut against each other when unfolded to the limit position.
11. The range hood according to claim 10, characterized in that The driving mechanism is a pair of telescopic guide rails arranged on the smoke collecting box, and the two telescopic guide rails are arranged on the two side walls of the third smoke baffle section respectively.
12. The range hood according to claim 3, wherein, The front smoke inlet is located between the bottom plate and the front panel; and the front opening is arranged on the front panel adjacent to the front smoke inlet.
13. The range hood according to claim 12, characterized in that The smoke collecting box further comprises a flow guide plate matched with the front smoke inlet, and the flow guide plate is rotatably connected to the bottom plate to switch between a closed state and a flow guiding state; when the flow guide plate is in the closed state, the flow guide plate is flipped forward relative to the bottom plate to close the front smoke inlet; When the flow guide plate is in the flow guiding state, the flow guide plate is flipped backward into the smoke inlet channel relative to the bottom plate to open the front smoke inlet.
14. The range hood according to claim 13, characterized in that The lower edge of the flow guide plate is pivoted to the front edge of the bottom plate, so that when the flow guide plate is in the closed state, the flow guide plate vertically extends upward from the front edge of the bottom plate to close the front smoke inlet, and when the flow guide plate is in the flow guiding state, the flow guide plate extends upward from the front edge of the bottom plate to be in the smoke inlet channel.
15. A method of adaptive control, characterized by The method for the range hood as claimed in any one of claims 1 to 14 comprises the steps of: detecting the oil fume data, the fan speed and / or the fire power selected by the knob of the cooking appliance in real time to collect the oil fume signal, the speed signal and / or the fire power signal correspondingly; judging the current oil fume level, the current speed level and / or the current fire power level in real time based on the collected oil fume signal, the speed signal and / or the fire power signal correspondingly; and based on the current oil fume level, the current speed level and / or the current fire power level, adaptively controlling the telescopic smoke baffle to extend forward to the position corresponding to the current oil fume level, the current speed level and / or the current fire power level.
Citation Information
Patent Citations
Range hood
CN111006291A
Gather petticoat pipe and range hood with telescopic fender cigarette board
CN205037392U