CN114763913A - Range hood and control method thereof - Google Patents
Range hood and control method thereof Download PDFInfo
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- CN114763913A CN114763913A CN202110028884.1A CN202110028884A CN114763913A CN 114763913 A CN114763913 A CN 114763913A CN 202110028884 A CN202110028884 A CN 202110028884A CN 114763913 A CN114763913 A CN 114763913A
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- Prior art keywords
- air inlet
- guide plate
- fan
- oil guide
- smoke baffle
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000000779 smoke Substances 0.000 claims description 99
- 238000010411 cooking Methods 0.000 claims description 10
- 230000004888 barrier function Effects 0.000 description 20
- 230000000694 effects Effects 0.000 description 8
- 239000004519 grease Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a range hood, which comprises a hollow box body and a fan system, wherein the box body comprises a left side plate and a right side plate, and is characterized in that: the air conditioner is characterized in that a first air inlet is formed in the left side plate, a second air inlet is formed in the right side plate, the fan systems are arranged in the box body, the fan systems are provided with two fans which are arranged in a left-right mode to form double parallel-connected fans, each fan system is provided with a fan air inlet, the fan air inlet of the fan system on the left side faces the first air inlet on the left side plate, and the fan air inlet of the fan system on the right side faces the second air inlet on the right side plate. Also discloses a control method of the range hood. Compared with the prior art, the invention has the advantages that: air inlets are directly formed in the left side and the right side of the box body, so that the air inlets can be opposite to the upper side of the center of the stove, the fan system adopts double fans which are connected in parallel, the air inlets of the fans are opposite to the air inlets of the box body, and negative pressure on the two sides is distributed in a concentrated mode.
Description
Technical Field
The invention relates to an oil fume purification device, in particular to a range hood and a control method of the range hood.
Background
The range hood has become one of the indispensable kitchen household electrical appliances in modern families. The range hood works by utilizing the fluid dynamics principle, sucks and exhausts oil smoke through a centrifugal fan arranged in the range hood, and filters partial grease particles by using a filter screen. The centrifugal fan comprises a volute, an impeller arranged in the volute and a motor driving the impeller to rotate. When the impeller rotates, negative pressure suction is generated in the center of the fan, oil smoke below the range hood is sucked into the fan, accelerated by the fan and then collected and guided by the volute to be discharged out of a room.
Range hoods are generally classified into a top suction type, a side suction type, and a low suction type. The top-suction type range hood adopts an oil smoke rising principle, generates a negative pressure area right above a cooking bench, and sucks and exhausts naturally rising oil smoke generated during cooking.
The side-draft and low-draft range hoods adopt a mode that an air inlet moves downwards, although the air inlet moves downwards, a fan frame is still in a cabinet, and meanwhile, the air inlet is fixed, so that the oil smoke suction effect under the cooking condition of a double-stove cannot be met.
In order to solve the problems, the air volume is mainly lifted or the air volume is discharged downwards at present. The mode of promoting the amount of wind can bring the noise, influence indoor heat balance scheduling problem: the lower exhaust type needs to destroy the table board, needs to open a hole in the public flue again, is influenced by other floors, is not suitable for the primary and secondary type public flues, also violates the upward rising rule of the oil smoke, needs to do more extra work and wastes energy; the promotion of the amount of wind brings the noise, influences indoor heat balance scheduling problem.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a range hood to improve the range hood oil smoke absorption effect without affecting the cooking operation experience of the user.
The second technical problem to be solved by the present invention is to provide a control method for the above range hood.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides a range hood, includes hollow box and fan system, the box includes left side board and right side board, its characterized in that: the air conditioner is characterized in that a first air inlet is formed in the left side plate, a second air inlet is formed in the right side plate, the fan systems are arranged in the box body, the fan systems are arranged in a left-right mode to form two parallel fans, each fan system is provided with a fan air inlet, the fan air inlet of the fan system on the left side faces the first air inlet in the left side plate, and the fan air inlet of the fan system on the right side faces the second air inlet in the right side plate.
In order to facilitate the collection of smoke and prevent the escape of oil smoke, the range hood further comprises a first smoke baffle capable of opening or closing the first air inlet and a second smoke baffle capable of opening or closing the second air inlet, the first smoke baffle is arranged on the left side plate, the second smoke baffle is arranged on the right side plate, so that an air inlet channel for forming the ring suction is formed between the first smoke baffle and the first air inlet when the first smoke baffle is opened to the direction movement outside the box body, and an air inlet channel for forming the ring suction is formed between the second smoke baffle and the second air inlet when the second smoke baffle is opened to the direction movement outside the box body.
For the convenience of the air inlet and the cooking range corresponding, the left side plate is gradually inclined to the right from top to bottom, and the right side plate is gradually inclined to the left from top to bottom.
Preferably, the first air inlet, the second air inlet, the first smoke baffle and the second smoke baffle are circular.
Preferably, the parallel double-fan structure is that the shaft of each fan system extends in the left-right direction, each fan system comprises a volute, an impeller arranged in the volute and a motor for driving the impeller to rotate, and the two fan systems share one motor.
In order to facilitate filtering and grease separation of oil smoke entering the fan system, a rotary net disc is arranged at the air inlet of each fan and is fixed with the impeller to rotate synchronously.
In order to guide oil smoke to smoothly enter a fan system and guide oil grease to the bottom of a box body, a first oil guide plate and a second oil guide plate are further arranged in the box body, the right end of the first oil guide plate is located on the left side of the left fan system and connected with the box body, the right end of the first oil guide plate is not lower than a corresponding fan air inlet, and the left end of the first oil guide plate is close to a left side plate and is not lower than a first air inlet; the left end of the second oil guide plate is located on the right side of the fan system on the right side and is connected with the box body, the left end of the second oil guide plate is not lower than a corresponding fan air inlet, and the right end of the second oil guide plate is close to the right side plate and is not lower than a second air inlet.
In order to adjust according to oil smoke concentration conveniently, the right-hand member and the box of first oil guide plate rotate to be connected, the left end and the box of second oil guide plate rotate to be connected, the axis of rotation of first oil guide plate and second oil guide plate all extends in the front and back direction.
The technical scheme adopted by the invention for solving the second technical problem is as follows: a control method of the range hood is characterized in that: the method comprises the following steps:
1) when the range hood is started, the first smoke baffle is at an initial position for closing the first air inlet, and the second smoke baffle is at an initial position for closing the second air inlet;
2) detecting the oil smoke concentration of the cooking range on the left side and the oil smoke concentration n1 on the right side and the oil smoke concentration n2 on the right side respectively, and performing corresponding control according to n1 and n 2:
2.1) if | n1-n2| < ═ x1, controlling the first smoke baffle to translate a1 outward from the initial position, controlling the second smoke baffle (32) to translate a distance a2 outward from the initial position, and satisfying a1 ═ a2, and a1 size proportional to n1 value; the first oil guide plate is controlled to be turned upwards by an angle theta 1, the second oil guide plate is controlled to be turned upwards by an angle theta 2, and the condition that the angle theta 1 is equal to the angle theta 2 is satisfied, and the angle theta 1 is proportional to the size of a 1; wherein x1 is a preset concentration deviation;
2.2) if n1> n2, the first smoke barrier is controlled to translate outward from the initial position by a distance a1, the second smoke barrier is controlled to translate outward from the initial position by a distance a2, and a1> a2 is satisfied, the size of a1-a2 is proportional to the value of n 1; in addition, the first oil guide plate is controlled to turn upwards by an angle theta 1, and the theta 1 is in direct proportion to a 1;
2.3) if n1< ═ n2, controlling the first smoke baffle to translate outward by a1 from the initial position, controlling the second smoke baffle to translate outward by a2 from the initial position, and satisfying a1< ═ a2, the size of a2-a1 is proportional to the value of n 2; and moreover, the second oil guide plate is controlled to flip upwards by an angle theta 2, and the theta 2 is proportional to the magnitude of a 2.
Compared with the prior art, the invention has the advantages that: the air inlets are directly formed in the left side and the right side of the box body, so that the air inlets can be over against the center of the stove, the oil smoke absorption effect can be improved, the cooking operation experience of a user is not influenced, and the fan system is arranged in the box body, so that the structure is compact, the size is small, the hanging cabinet space is saved, the fan system adopts double fans connected in parallel, the air inlets of the fans are over against the air inlets of the box body, and negative pressures at the two sides are intensively distributed; the smoke blocking plate of the air inlet which can be opened or closed is arranged, so that the smoke collecting effect can be improved; by arranging the oil guide plate, not only can the grease be guided to the bottom of the box body, but also the oil fume flow can be smoothly guided into the fan system; multiple oil smoke separation, the oil separation degree is improved comprehensively, the oil smoke purification effect is improved, and the service life of a fan system is prolonged.
Drawings
Fig. 1 is a front view of a range hood according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a range hood in accordance with an embodiment of the present invention;
FIG. 3 is a sectional view of the range hood according to the embodiment of the present invention in an initial state;
fig. 4 is a sectional view of the range hood according to the embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships illustrated in the drawings for the purposes of convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must be in a particular orientation, construction and operation, and that the disclosed embodiments of the invention are arranged in different orientations, so that the directional terms are exemplary only and are not to be construed as limiting, e.g., "upper," "lower than," and the same, "" lower than, "etc., where the same, and the same than the like in the same than the other than the same than the other than the same in the same than the same in the same than in the same direction of the same, "lower" is not necessarily limited to a direction opposite to or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
Referring to fig. 1 and 2, a range hood includes a box 1 and a fan system 2 disposed in the box 1. The case 1 has a substantially inverted trapezoidal shape, and the width of the bottom of the case 1 in the left-right direction is smaller than the width of the top of the case 1 in the left-right direction. The box body 1 is hollow and comprises a left side plate 11, a right side plate 12 and a bottom plate 13, and the bottom plate 13 is connected between the bottom ends of the left side plate 11 and the right side plate 12. The left side plate 11 is inclined from top to bottom to the right gradually, and the right side plate 12 is inclined from top to bottom to the left gradually. The left side plate 11 and the right side plate 12 are symmetrically distributed, so that the box body 1 has a structure which is wide at the top and narrow at the bottom.
The left side plate 11 is provided with a first air inlet 111, the right side plate 12 is provided with a second air inlet 121, and the range hood further includes a first smoke baffle 31 capable of opening or closing the first air inlet 111 and a second smoke baffle 32 capable of opening or closing the second air inlet 121. The first smoke barrier 31 extends forward and backward and is provided on the left side plate 11 to be inclined as much as the left side plate 11, and preferably, the first smoke barrier 31 is parallel to the left side plate 11. The second smoke barrier 32 extends back and forth and is disposed on the right side panel 12 at the same incline as the right side panel 12, preferably with the second smoke barrier 32 parallel to the right side panel 12.
The first smoke barrier 31 is matched with the first air inlet 111 in shape and size, and the second smoke barrier 32 is matched with the second air inlet 121 in shape and size. The first smoke baffle 31 can move horizontally relative to the left side plate 11 so as to open or close the first air inlet 111, and when the first air inlet 111 needs to be opened, the first smoke baffle moves horizontally leftwards (towards the outside of the box body 1) in the direction away from the left side plate 11 to form an air inlet channel for circular suction; when it is required to close the first air inlet 111, it is translated rightward in a direction approaching the left side plate 11. The second smoke baffle 32 can move horizontally relative to the right side plate 12 so as to open or close the second air inlet 121, and when the second air inlet 121 needs to be opened, the second smoke baffle moves horizontally to the right (towards the outside of the box body 1) in the direction away from the right side plate 12 to form an air inlet channel for circular suction; when the second air inlet 121 needs to be closed, the second air inlet is translated to the right in the direction of approaching the right side plate 12. The first smoke baffle 31 and the second smoke baffle 32 can also open the corresponding air inlets by other existing methods, such as turning, or turning in combination with translation.
The first air inlet 111, the second air inlet 121, the first smoke baffle 31 and the second smoke baffle 32 are circular or similar circular structures, and the center positions of the first air inlet and the second air inlet are opposite to the upper parts of the cooking ranges on the corresponding sides. The first smoke baffle 31 and the second smoke baffle 32 mainly function as a flow guide wall, contact the corresponding smoke baffles in the oil smoke rising process, and enter the box body 1 along the circular air suction channel around the corresponding smoke baffles.
The first smoke barrier 31 translates in a direction perpendicular to the left side panel 11 as indicated by the left side arrow in fig. 3, and the second smoke barrier 32 translates in a direction perpendicular to the right side panel 12 as indicated by the right side arrow in fig. 3. The first smoke barrier 31 and the second smoke barrier 32 can be driven by a linear driving module to move horizontally, and the linear driving module is preferably an electric push rod.
The fan systems 2 have two arranged in parallel left and right, and the axis of each fan system 2 extends in the left-right direction. Each fan system 2 includes a volute 21, an impeller 22 disposed in the volute 21, and a motor 23 for driving the impeller 22 to rotate, and the two volutes 21 may be integrally formed. The motor 23 is a dual output shaft motor, and the two fan systems 2 share the same motor 23, with the output shaft of the motor 23 preferably extending horizontally. The volute casing 21 is provided with a fan inlet 211, wherein the fan inlet 211 of the left fan system 2 faces the first inlet 111 on the left side plate 11, and the fan inlet 211 of the right fan system 2 faces the second inlet 121 on the right side plate 12. The volute casing 21 is further provided with a fan air outlet 212, and the fan air outlet 212 is located at the top of the volute casing 21.
And a rotary net disc 24 is arranged at each fan air inlet 211, the rotary net disc 24 is fixed with the impeller 22 and is driven to rotate by the motor 23, and the space and the cost are saved. The rotary screen disc 24 may be of any conventional type, such as a circular or spoke type structure, and is capable of dynamically blocking the oil-smoke separation. The rotating net discs 24 and the impellers 22 are matched in parallel, inflow wind speed is reduced, interception effect of the rotating net discs 24 is increased, and meanwhile, separation effect of oil smoke is further enhanced due to synchronous effect of the two rotating net discs 24.
The box body 1 is further internally provided with a first oil guide plate 41 and a second oil guide plate 42, the right end of the first oil guide plate 41 is positioned on the left side of the left fan system 2 and is rotatably connected with the box body 1, the right end of the first oil guide plate 41 is not lower than a corresponding fan air inlet 211, and the left end of the first oil guide plate 41 is close to the left side plate 11 and is not lower than the first air inlet 111. The left end of the second oil guide plate 42 is located on the right side of the right fan system 2 and is rotatably connected with the box body 1, the left end of the second oil guide plate 42 is not lower than the corresponding fan air inlet 211, and the right end of the second oil guide plate 42 is close to the right side plate 12 and is not lower than the second air inlet 121. The rotational axes of the first oil guide plate 41 and the second oil guide plate 42 each extend in the front-rear direction. The first oil guide plate 41 and the second oil guide plate 42 may be driven to rotate by a motor or the like. The first oil guide plate 41 is located above the first air inlet 111 at the left end in the initial position, and the second oil guide plate 42 is located above the second air inlet 121 at the right end in the initial position.
Every leads the cooperation inlet air channel of oiled-plate, will get into the air current in the box 1 and lead fan air intake 211 more smoothly, inside grease with the condensation leads box 1 simultaneously.
The oil smoke passes through the triple separating device, firstly the first is condensed and separated at each smoke baffle, secondly the second is dynamically separated at the rotary net disc 24, and finally the third is centrifugally thrown and sucked and separated through the impeller 22.
The invention discloses a control method of a range hood, which comprises the following steps:
1) when the range hood is started, the first smoke barrier 31 is at an initial position for closing the first air inlet 111, and the second smoke barrier 32 is at an initial position for closing the second air inlet 121; see fig. 3;
2) detecting the oil smoke concentration of the cooking range on the left side and the oil smoke concentration n1 on the right side and the oil smoke concentration n2 on the right side respectively, and performing corresponding control according to n1 and n 2:
2.1) if | n1-n2| < ═ x1, where x1 is a preset one concentration deviation, then control the first smoke barrier 31 to translate outward a1 from the initial position, control the second smoke barrier 32 to translate outward a2 from the initial position, and a1 ═ a2, and a1 size is proportional to the n1 value; the left first oil guide plate 41 is controlled to be turned upwards by an angle theta 1, the right second oil guide plate 42 is controlled to be turned upwards by an angle theta 2, and the turned angle theta 1 is equal to theta 2 and is proportional to the size of a 1; see fig. 4;
2.2) if n1> n2, the first smoke barrier 31 is controlled to translate outward from the initial position by a distance a1, the second smoke barrier 32 is controlled to translate outward from the initial position by a distance a2, and a1> a2, (a1-a2) is proportional in magnitude to the value of n 1; in addition, the first oil guide plate 41 on the left side is controlled to turn upwards by an angle theta 1, and the turning angle theta 1 is in direct proportion to a 1;
2.3) if n1< ═ n2, then the first smoke barrier 31 is controlled to translate outward a1 from the initial position, the second smoke barrier 32 is controlled to translate outward a2 from the initial position, and a1< ═ a2, (a2-a1) size is proportional to n2 value; in addition, the left second oil deflector 42 is controlled to turn upwards by an angle theta 2, and the turning angle theta 2 is proportional to the size of a 2.
Claims (9)
1. The utility model provides a range hood, includes hollow box (1) and fan system (2), box (1) includes left side board (11) and right side board (12), its characterized in that: first air intake (111) have been seted up on left side board (11), second air intake (121) have been seted up on right side board (12), fan system (2) set up in box (1), fan system (2) have about two of arranging and constitute parallelly connected double fan, every fan system (2) have fan air intake (211), be located fan air intake (211) of left fan system (2) first air intake (111) on left side board (11), fan air intake (211) of fan system (2) that is located the right side then towards second air intake (121) on right side board (12).
2. The range hood of claim 1, wherein: the range hood is characterized by further comprising a first smoke baffle (31) capable of opening or closing the first air inlet (111) and a second smoke baffle (32) capable of opening or closing the second air inlet (121), wherein the first smoke baffle (31) is arranged on the left side plate (11), the second smoke baffle (32) is arranged on the right side plate (12), so that an air inlet channel for sucking is formed between the first smoke baffle (31) and the first air inlet (111) when the first smoke baffle (31) is opened to the outer direction movement of the box body (1), and an air inlet channel for sucking is formed between the second smoke baffle (32) and the second air inlet (121) when the second smoke baffle (32) is opened to the outer direction movement of the box body (1).
3. The range hood of claim 2, wherein: the left side board (11) is inclined to the right from top to bottom gradually, and the right side board (12) is inclined to the left from top to bottom gradually.
4. A range hood as claimed in claim 3, wherein: the first air inlet (111), the second air inlet (121), the first smoke baffle (31) and the second smoke baffle (32) are circular.
5. The range hood according to any one of claims 1 to 4, wherein: the shaft of each fan system (2) extends in the left-right direction, each fan system (2) comprises a volute (21), an impeller (22) arranged in the volute (21) and a motor (23) used for driving the impeller (22) to rotate, and the two fan systems (2) share one motor (23).
6. The range hood of claim 5, wherein: and a rotary net disc (24) is arranged at the air inlet (211) of each fan, and the rotary net disc (24) and the impeller (22) are fixed and can synchronously rotate.
7. The range hood according to any one of claims 1 to 4, wherein: a first oil guide plate (41) and a second oil guide plate (42) are further arranged in the box body (1), the right end of the first oil guide plate (41) is located on the left side of the left fan system (2) and is connected with the box body (1), the right end of the first oil guide plate (41) is not lower than a corresponding fan air inlet (211), and the left end of the first oil guide plate (41) is close to the left side plate (11) and is not lower than the first air inlet (111); the left end of the second oil guide plate (42) is located on the right side of the right fan system (2) and connected with the box body (1), the left end of the second oil guide plate (42) is not lower than a corresponding fan air inlet (211), and the right end of the second oil guide plate (42) is close to the right side plate (12) and is not lower than a second air inlet (121).
8. The range hood of claim 7, wherein: the right-hand member of first oil guide plate (41) rotates with box (1) to be connected, the left end and the box (1) of second oil guide plate (42) rotate to be connected, the axis of rotation of first oil guide plate (41) and second oil guide plate (42) all extends in the front and back direction.
9. A control method of a range hood as claimed in claim 8, wherein: the method comprises the following steps:
1) when the range hood is started, the first smoke baffle (31) is in an initial position for closing the first air inlet (111), and the second smoke baffle (32) is in an initial position for closing the second air inlet (121);
2) detecting the oil smoke concentration of the cooking range on the left side and the oil smoke concentration n1 on the right side and the oil smoke concentration n2 on the right side respectively, and performing corresponding control according to n1 and n 2:
2.1) if | n1-n2| < ═ x1, controlling the first smoke baffle (31) to translate outward from the initial position by a distance a1, controlling the second smoke baffle (32) to translate outward from the initial position by a2, and satisfying a1 ═ a2, and the a1 size is proportional to the value of n 1; the first oil guide plate (41) is controlled to be turned upwards by an angle theta 1, the second oil guide plate (42) is controlled to be turned upwards by an angle theta 2, and the condition that the theta 1 is equal to the theta 2 and the theta 1 is proportional to the size of a1 is met; wherein x1 is a preset concentration deviation;
2.2) if n1> n2, controlling the first smoke baffle (31) to translate outward from the initial position by a distance a1, controlling the second smoke baffle (32) to translate outward from the initial position by a distance a2, and satisfying a1> a2, the size of a1-a2 is proportional to the value of n 1; in addition, the first oil guide plate (41) is controlled to turn upwards by an angle theta 1, and the theta 1 is in direct proportion to a 1;
2.3) if n1< ═ n2, controlling the first smoke baffle (31) to translate outward from the initial position by a distance a1, controlling the second smoke baffle (32) to translate outward from the initial position by a distance a2, and satisfying that a1< ═ a2, the size of a2-a1 is proportional to the value of n 2; and moreover, the second oil guide plate (42) is controlled to turn upwards by an angle theta 2, and the theta 2 is proportional to the size of a 2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110028884.1A CN114763913A (en) | 2021-01-11 | 2021-01-11 | Range hood and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110028884.1A CN114763913A (en) | 2021-01-11 | 2021-01-11 | Range hood and control method thereof |
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| CN114763913A true CN114763913A (en) | 2022-07-19 |
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| CN108826411A (en) * | 2018-09-29 | 2018-11-16 | 中山市樱雪集团有限公司 | Range hood structure with multidirectional air inlet function |
| CN111219757A (en) * | 2018-11-26 | 2020-06-02 | 宁波方太厨具有限公司 | Fume exhaust fan |
| CN110397970A (en) * | 2019-07-29 | 2019-11-01 | 宁波方太厨具有限公司 | A kind of range hood and its control method |
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