CN110715335A

CN110715335A - Range hood and control method thereof

Info

Publication number: CN110715335A
Application number: CN201910993328.0A
Authority: CN
Inventors: 王发银; 何立博
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-01-21
Anticipated expiration: 2039-10-18
Also published as: CN110715335B

Abstract

The invention discloses a range hood, which comprises a smoke collecting hood, a front smoke baffle, a first side smoke baffle and a second side smoke baffle, wherein the front smoke baffle is rotatably arranged below the front side of the smoke collecting hood and can be positioned at a first position extending transversely and a second position extending longitudinally; the first side keeps off the cigarette board and the second side keeps off the cigarette board and sets up in the front and keeps off both ends about the cigarette board respectively with rotating to keep off the third position that the cigarette board syntropy extended with preceding and keep off the fourth position that the cigarette board turned over respectively to collection petticoat pipe left and right sides below longitudinal extension before relatively. Also discloses a control method of the range hood. Compared with the prior art, the invention has the advantages that: through setting up three sides and keeping off the cigarette board and adopt the folding scheme of substep, reach trilateral protection and reduce the purpose of managing area and time, on the one hand the substep is folding to promote under the prerequisite that can make the product outward appearance guarantee and is held together the cigarette effect, and on the other hand folding structure has reduced the quantity at gap, dead angle, reduces the management time by a wide margin.

Description

Range hood and control method thereof

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. Generally, the range hood comprises a top suction type range hood and a side suction type range hood, and the top suction type range hood has more and more extensive application due to the advantages of neatness, lightness, small occupied space and the like.

At present, the integral installation height of the top-suction type range hood determines that the range hood is far away from a pot generating oil smoke, the negative pressure loss is large, and the oil smoke rising above the pot easily escapes from the two sides and the front side of a smoke collecting cover, so that the oil smoke suction effect is poor. In order to improve the effect of the range hood, people improve the structure of the range hood, wherein a fan system of the range hood is improved by a common method, for example, the power of a fan is increased, for example, the structure of an impeller is improved, and the like.

Among the prior art, there is a range hood that prevents the oil smoke from escaping by setting up a baffle on both sides and front side of the smoke collecting hood to collect the smoke, such as a range hood disclosed in chinese patent application No. 201320021818.2, and such as a novel range hood with an intelligent overturn smoke baffle disclosed in chinese patent application No. 201611216640.1, all can be opened when needed, closed and collected. However, if the baffles on the two sides and the baffle on the front side are arranged at the same time, the oil smoke cannot be folded inwards and retracted when the oil smoke collecting hood is not used due to structural interference, so that inconvenience is brought to use, the attractiveness of the product is also influenced, gaps are formed between the left side and the right side of the oil smoke collecting hood and can be stained with oil stains, oil smoke eddy currents are easily formed at the positions of the gaps, the oil smoke eddy currents can aggravate the staining of the oil stains, a cleaning dead angle is formed, the oil smoke is difficult to clean after entering the oil smoke collecting hood, and the cleaning time is prolonged; in addition, the fender cigarette board independent control of each side respectively can increase a clean dead angle in the left and right sides, and it is many three times that single front side of work load is managed, keeps away from the user because of the clean dead angle of the left and right sides again, more can increase its clean degree of difficulty, and the clean experience of user is extremely poor, can form three containing area moreover, and the structure is complicated, still can influence the outward appearance of product.

Disclosure of Invention

The first technical problem to be solved by the invention is to provide a range hood aiming at the defects in the prior art, which can improve the smoke gathering effect on the premise of ensuring the appearance, and simultaneously reduce the number of gaps and dead corners and shorten the cleaning time.

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, keeps off cigarette board, first side and keeps off cigarette board and second side and keep off cigarette board, its characterized in that including collection petticoat pipe, preceding fender cigarette board:

the front smoke baffle is rotationally arranged below the front side of the smoke collecting cover and can be positioned at a first position extending transversely and a second position extending longitudinally;

the first side keeps off the cigarette board and the second side keeps off the cigarette board and sets up in the front and keeps off both ends about the cigarette board respectively with rotating to keep off the third position that the cigarette board syntropy extended with preceding and keep off the fourth position that the cigarette board turned over respectively to collection petticoat pipe left and right sides below longitudinal extension before relatively.

Still including first drive arrangement and the gear train that is used for keeping off the cigarette board before the drive, the gear train includes by first drive arrangement drive pivoted first gear and with first gear engagement's second gear, the axis of rotation of first gear and second gear all extends in left right direction, the second gear is connected with preceding cigarette board.

Still include with collection petticoat pipe fixed connection's support, first drive arrangement and first gear all set up in collection petticoat pipe top, be close to the position of collection petticoat pipe front side, the second gear is located collection petticoat pipe below, is close to the position of collection petticoat pipe front side, first gear pass collection petticoat pipe and with the meshing of second gear, the support extends collection petticoat pipe below from collection petticoat pipe top, first gear and second gear are connected with rotate bracket respectively.

The gear train has two sets ofly, and two first gears set up respectively in the position that corresponds with the left and right sides both ends of preceding fender cigarette board, and two second gears set up respectively in the left and right sides both ends of preceding fender cigarette board, connect through the synchronizing bar between two first gears.

Still keep off the second drive arrangement that the cigarette board overturns before being used for driving first side and keeping off cigarette board, second side fender cigarette board relatively, second drive arrangement has two, sets up both ends about keeping off the cigarette board in the front respectively, first side keeps off the front end of cigarette board and has the first connecting portion of being connected with corresponding second drive arrangement's output, the second side keeps off the front end of cigarette board and has the second connecting portion of being connected with corresponding second drive arrangement's output.

Thereby still including being used for detecting the infrared induction subassembly of two second drive arrangement synchronization actions of current culinary art environment control, the infrared induction subassembly sets up on the collection cigarette cover, the infrared induction subassembly is integrated to be used for detecting and is located the infrared distance measuring sensor of the distance between the cooking utensils of range hood below and is used for detecting the infrared temperature sensor of cooking utensils top temperature variation.

Thereby still including the infrared induction subassembly that is used for detecting two second drive arrangement independent motions of current culinary art environment control, the infrared induction subassembly has two, sets up respectively in the left and right sides of collection petticoat pipe, the infrared induction subassembly is integrated to have the infrared distance measuring sensor who is used for detecting and is located the distance between the corresponding side cooking utensils of range hood below and is used for detecting the infrared temperature sensor who correspondingly inclines cooking utensils top temperature variation.

The first side keeps off and has seted up the through-hole on cigarette board and the second side keeps off the cigarette board respectively, and when first side keeps off cigarette board and second side and keeps off the cigarette board and be in the fourth position, the through-hole is in the top that first side kept off cigarette board and second side kept off the cigarette board.

The first technical solution adopted by the present invention to solve the second technical problem is: 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 front smoke baffle is positioned at a first position extending transversely, and the first side smoke baffle and the second side smoke baffle are positioned at a third position extending in the same direction as the front smoke baffle;

2) the first driving device is started to drive the first gear of the gear set to rotate, so that the second gear is driven to rotate, and the front smoke baffle is turned from the first position to the longitudinally extending second position by taking the rotating shaft of the second gear as a rotating shaft;

3) when the two second driving devices work synchronously, the infrared distance measuring sensor of the infrared sensing assembly detects whether an obstacle exists on any stove, if so, the step 4 is carried out, and if not, the step is repeated;

4) when the two second driving devices work synchronously, the infrared temperature sensor of the infrared sensing assembly detects the real-time temperature T of the barrier, judges whether the T is greater than a preset temperature T0, if so, judges that a large amount of oil smoke is generated soon, and enters the step 5), and if not, repeats the step;

5) when the two second driving devices work synchronously, the second driving devices are started to drive the first side smoke baffle plate and the second side smoke baffle plate to turn backwards to a fourth position below the left side and the right side of the smoke collecting hood by taking an output shaft of the second driving device as a rotating shaft;

6) the range hood is closed, the second driving device runs in the reverse direction, the first side smoke baffle and the second side smoke baffle are retracted to the third position, then the first driving device runs in the reverse direction, the front smoke baffle is retracted to the first position, and the first driving device and the second driving device both rotate to the overcurrent protection state to complete one-time work.

The second technical solution adopted by the present invention to solve the second technical problem is: a control method of the range hood is characterized in that: the method comprises the following steps:

3) detecting whether barriers exist on the corresponding side cooker by an infrared distance measuring sensor of the infrared sensing assembly, if so, entering the step 4), and if not, repeating the step;

4) detecting the real-time temperature T of the obstacle by an infrared temperature sensor of an infrared sensing assembly at one side of the obstacle, judging whether the T is greater than the preset temperature T0, if so, entering the step 5), and if not, repeating the step;

5) the second driving device on the side opposite to the side where the obstacle with T & gt T0 is detected is started, and the side smoke baffle on the corresponding side of the second driving device is driven to turn backwards to a fourth position below the left side and the right side of the smoke collecting hood by taking the output shaft of the second driving device as a rotating shaft;

6) the range hood is closed, the second driving device runs in the reverse direction, the first side smoke baffle and/or the second side smoke baffle are/is retracted to the third position, then the first driving device runs in the reverse direction, the front smoke baffle is retracted to the first position, and the first driving device and the second driving device both rotate to an overcurrent protection state to complete one-time work.

Compared with the prior art, the invention has the advantages that: by arranging the three-side smoke baffle and adopting a step-by-step folding scheme, the aims of protecting three sides and reducing the cleaning area and time are fulfilled, on one hand, the cigarette collecting effect can be improved on the premise of ensuring the product appearance by step-by-step folding, on the other hand, the number of gaps and dead corners is reduced by the folding structure, and the cleaning time is greatly reduced; meanwhile, the gaps between the two side smoke baffles and the smoke collecting cavity form an air supplementing channel, so that the oil smoke on the left outer edge and the right outer edge can be sucked as soon as possible, and the oil smoke adhesion caused by the rotation of the oil smoke is avoided; the infrared sensing assembly is adopted, and a pre-judging system formed by the infrared sensing assembly pre-judges the temperature according to the existence and the temperature of the cooking pot, so that the front, the left and the right smoke baffles can be turned in place before a large amount of oil smoke is generated in a short time, and the defect of lag caused by an oil smoke concentration sensor is avoided; after opening through making preceding smoke baffle, open two side smoke baffles again, the oil smoke of gathering in the collection smoke chamber when having avoided big oil smoke state is concentrated in the front side and is spilled over for the oil smoke gushes out user's face, greatly reduces user's use and experiences.

Drawings

Fig. 1 is a schematic view illustrating an installation of a range hood and a cooking bench according to an embodiment of the present invention;

FIG. 2 is a schematic view of a closed state of a smoke baffle of the range hood according to the embodiment of the invention;

FIG. 3 is a partial schematic view of the range hood of FIG. 2;

FIG. 4 is an exploded view of the smoke barrier and the moving mechanism thereof of the range hood of FIG. 2;

fig. 5 is a schematic view of the opening state of the front smoke baffle of the range hood according to the embodiment of the invention;

FIG. 6 is a partial schematic view of the range hood of FIG. 5;

FIG. 7 is a schematic view of the range hood according to the embodiment of the present invention showing the front and side smoke baffles in an open state;

FIG. 8 is a partial schematic view of the extractor hood of FIG. 7;

fig. 9 is a control flowchart of the range hood according to the embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

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," "lateral," "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 indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Referring to fig. 1, a cooking bench 100 is disposed below the range hood, cooking utensils 101 are disposed on the cooking bench 100, the cooking utensils 101 are preferably disposed at left and right intervals, and a pot 102 can be placed on any cooking utensil 101 for cooking.

Referring to fig. 2 to 4, a range hood includes a smoke collecting hood 1 and a fan frame 2 disposed above the smoke collecting hood 1, an air inlet 11 is disposed on the smoke collecting hood 1, a smoke collecting cavity 12 recessed upwards is formed inside the smoke collecting hood 1, and a fan system is disposed in the fan frame 2, so as to suck and discharge oil smoke from the lower portion of the range hood to a common flue.

In order to improve the effect of absorbing oil smoke and prevent the oil smoke from escaping from the front side and the left and right sides of the smoke collecting cover 1, the range hood further comprises a front smoke baffle 3, a first side smoke baffle 41 and a second side smoke baffle 42. Wherein, preceding cigarette board 3 can be opened in the front side below of collection petticoat pipe 1, and first side keeps off cigarette board 41 can open in the left side below of collection petticoat pipe 1, and second side keeps off cigarette board 42 can open in the right side below of collection petticoat pipe 1, and first side keeps off cigarette board 41 and second side and keeps off cigarette board 42 and constitute side and keep off cigarette board subassembly.

In order to realize that the opening and closing of the front smoke baffle 3, the first side smoke baffle 41 and the second side smoke baffle 42 can be automatically controlled according to the cooking state, the range hood further comprises a moving mechanism and an infrared sensing assembly 6 for detecting the current cooking environment so as to control the moving mechanism to operate, and the infrared sensing assembly 6 can be arranged on the left side or the right side of the smoke collecting hood 1 or in the middle of the smoke collecting hood 1. The infrared sensing component 6 integrates an infrared distance measuring sensor and an infrared temperature sensor, and can sense the distance change (whether an obstacle such as a cooker 102 exists) between the cookers 101 and detect the change of the temperature above the cookers 101.

The movement mechanism comprises a first driving device 51, a gear set 52, a synchronizing rod 53 and a second driving device 54, wherein the gear set 52 comprises two groups which are respectively arranged at the positions corresponding to the left end and the right end of the front smoke baffle 3 and comprise a first gear 521 and a second gear 522. The first driving device 51 is disposed above the smoke collecting hood 1 at a position close to the front side of the smoke collecting hood 1, and is fixedly connected with the smoke collecting hood 1. The first drive device 51 is disposed near one of the gear sets 52, and the output shaft of the first drive device 51, the first gear 521, and the second gear 522 all have their rotational axes extending in the left-right direction. The first gear 521 is also disposed above the smoke collecting hood 1 near the front side of the smoke collecting hood 1, the second gear 522 is disposed below the smoke collecting hood 1 near the front side of the smoke collecting hood 1, and the first gear 521 passes through the smoke collecting hood 1 and is meshed with the second gear 522, so that when the first gear 521 rotates, the second gear 522 is driven to rotate. In the present embodiment, the first driving device 51 and the first gear 521 are provided behind the front panel of the hood 1. The second gear 522 is rotatably connected to the corresponding end of the front smoke barrier 3. Preferably, the second gear 522 is provided at the top end of both left and right end portions of the front smoke barrier 3. The movement mechanism further comprises a bracket 55 fixedly connected with the smoke collecting hood 1, the bracket 55 extends from the upper part of the smoke collecting hood 1 to the lower part of the smoke collecting hood 1, and the first gear 521 and the second gear 522 are respectively and rotatably connected with the bracket 55, so that the positioning and the movement of the gear set 52 are facilitated.

In the present embodiment, the first driving device 51 is a dual-output motor, wherein one output shaft is connected to the first gear 521 of the adjacent gear set 52, and the other output shaft is connected to the first gear 521 of the other gear set 52 through a synchronization rod 53, so as to drive the gear set 52 to rotate. Alternatively, the first driving device 51 may also be a single-output motor, an output shaft of the single-output motor drives the first gears 521 to rotate through a transmission mechanism such as a worm gear, a gear set, and the like, and the two first gears 521 are connected through the synchronization rod 53 to realize synchronous rotation.

The second driving means 54 is preferably a motor having two, which are respectively disposed at the left and right ends of the front smoke barrier 3, such as being embedded in the end portion of the front smoke barrier 3, and the output end extends out of the front smoke barrier 3. The second driving device 54 is more preferably a dual output motor, the front end of the first side smoke barrier 41 has first connecting parts 411 connected to the output ends of the second driving device 54 and respectively disposed at both sides of the corresponding second driving device 54, and the front end of the second side smoke barrier 42 has second connecting parts 421 connected to the output ends of the second driving device 54 and respectively disposed at both sides of the corresponding second driving device 54. The output of the second drive 54 extends in the fore-aft direction when the side flaps are closed. The first connecting portions 411 are respectively located at the front and rear sides of the second driving device 54, and the second connecting portions 421 are respectively located at the front and rear sides of the corresponding second driving device 54.

The first connecting portion 411 and the second connecting portion 421 respectively have a certain angle of bending, so that in a furled state, the first side smoke barrier 41 and the second side smoke barrier 42 are dislocated with the front smoke barrier 3 and are accommodated above the front smoke barrier 3. This connection structure is similar to a hinge structure. The sum of the lengths (the size in the left-right direction in the folded state) of the first side smoke baffle 41 and the second side smoke baffle 42 does not exceed the length of the front smoke baffle 3 so as to prevent the two side smoke baffles from interfering in the folded state, and the lengths of the first side smoke baffle 41 and the second side smoke baffle 42 are respectively adapted to the widths (the size in the front-back direction) of the left side and the right side of the smoke collecting hood 1.

The first driving device 51, the second driving device 54 and the infrared sensing assembly 6 are electrically connected to a controller of the range hood, respectively. When the two second driving devices 54 are controlled to work synchronously, the infrared sensing assembly 6 can be arranged at the middle of the bottom of the smoke collecting hood 1. When the two second driving devices 54 are controlled to work independently, the infrared sensing assemblies 6 may be respectively disposed at the left and right sides of the smoke collecting hood 1.

In order to reduce the oil smoke vortex at the right and left sides and right angle, the first side smoke baffle 41 and the second side smoke baffle 42 are respectively provided with a through hole 43. The position of through-hole 43 is defined as, when first side keeps off cigarette board 41 and second side and keeps off cigarette board 42 and be in the open mode, is in the position that is close to collection smoke chamber 12, and first side keeps off the top that cigarette board 41 and second side kept off cigarette board 42 promptly, makes along collection smoke chamber 12 have a small amount of oil smoke to mend from the outside, can eliminate the rotatory whirlpool of oil smoke simultaneously, and the oil smoke that reduces the dead angle position is stained with and attaches, sparingly arranges the time.

The control method of the range hood comprises the following steps:

1) when the range hood is opened, the front smoke baffle 3, the first side smoke baffle 41 and the second side smoke baffle 42 are horizontally gathered below the front side of the smoke collecting hood 1 at the moment, see fig. 2 and 3; at this time, the front smoke barrier 3 is in a first position in which it is closed and extends transversely, preferably horizontally, and the first side smoke barrier 41 and the second side smoke barrier 42 are in a third position in which they are closed and extend closely to and in the same direction as the front smoke barrier 3;

2) when the first driving device 51 is turned on, the first gear 521 of the driving gear set 52 rotates, so as to drive the second gear 522 meshed with the first gear to rotate, so that the front smoke baffle 3 is turned from the first position stored below the smoke collecting hood 1 to the second longitudinally extending, preferably vertical, open position by taking the rotating shaft of the second gear 522 as a rotating shaft, and the second position is shown in fig. 5 and 6; in the process, the first driving device 51 can be controlled to drive the front smoke barrier 3 to rotate by 90 degrees by arranging a stroke detection mechanism, such as a hall element and magnet, on the first driving device 51;

3) detecting whether any kitchen range 101 has an obstacle such as a pot 102 by an infrared distance measuring sensor of the infrared sensing assembly 6, if so, entering the step 4), and if not, repeating the step; in the process, if an obstacle exists, the distance between the infrared distance measuring sensor and the cooker 101 changes, and the infrared distance measuring sensor is shielded and reflected by the cooker 102 in advance;

4) detecting the real-time temperature T of the obstacle by an infrared temperature sensor of the infrared sensing assembly 6, judging whether the T is greater than a preset temperature T0, if so, prejudging that a large amount of oil smoke is generated soon, entering the step 5), and if not, repeating the step;

5) the second driving device 54 is started to drive the first side smoke baffle plate 41 and the second side smoke baffle plate 42 to turn backwards to a fourth position which is longitudinally extended and preferably vertical and is opened at the lower part of the left side and the right side of the smoke collecting hood 1 by taking an output shaft of the second driving device 54 as a rotating shaft, and the fourth position is shown in fig. 7 and 8; in the process, the second driving device 54 can be controlled to drive the first side smoke baffle plate 41 and the second side smoke baffle plate 42 to rotate by 90 degrees by arranging a stroke detection mechanism, such as the cooperation of a hall element and a magnet, on the second driving device 54;

6) the range hood is closed, the second driving device 54 runs in reverse, the first side smoke baffle plate 41 and the second side smoke baffle plate 42 are retracted to the third position behind the front smoke baffle plate 3, then the first driving device 51 runs in reverse, the front smoke baffle plate 3 is retracted to the first position in the horizontal state, and the first driving device 51 and the second driving device 54 both rotate to the overcurrent protection state to complete one-time operation.

The third position is a position where the side smoke barrier and the front smoke barrier 3 are tightly attached and extend in the same direction, and is independent of whether the front smoke barrier 3 is in the first position or the second position.

The above control method takes the synchronous operation of the two second driving devices 54 as an example. When the two second driving devices 54 work independently, if a user uses the left cooker 101 and detects that the temperature exceeds a preset temperature, the second side smoke baffle 42 on the opposite side is opened, so that the right air supply is reduced, the left air supply is increased, the oil smoke is deflected to the right under the action of the left air flow, and the oil smoke is prevented from escaping from the left. The control scheme is similar when the user uses the right-hand hob 101.

The infrared sensing assembly 6 is adopted, and a pre-judging system formed by the infrared sensing assembly 6 pre-judges the temperature according to the existence and the temperature of the cooking pot, so that the front smoke baffle, the left smoke baffle and the right smoke baffle can be turned in place before a large amount of oil smoke is generated in a short time, and the defect of lag caused by an oil smoke concentration sensor is avoided, namely the oil smoke concentration sensor can receive feedback when detecting large oil smoke, and the large oil smoke reaches the position of the sensor, so that the rotation of the smoke baffles loses the intelligent significance because the time of the large oil smoke process in the cooking process is short.

In the present invention, after the front smoke barrier 3 is opened, the two side smoke barriers are opened because: present traditional range hood, its race cigarette operating mode is like: the oil smoke can not escape during cooking of small oil smoke at ordinary times and can be basically sucked by the range hood, when a user puts dishes into a pot during instant large oil smoke, the oil smoke is continuously generated in a short time at the moment, the oil smoke is accelerated to rise under the action of heat, the volume of the oil smoke expands due to large oil smoke concentration during the rising process and is gathered in the smoke collection cavity within 3 seconds, the oil smoke is gathered in a short time because the suction amount of the range hood is unchanged in unit time at the moment, and the smoke collection cavity is filled after several seconds and overflows from the front side and the left side and the right side; if open two side smoke baffles this moment, and do not open preceding smoke baffle 3, the oil smoke of gathering in the collection smoke chamber can concentrate on the front side and spill over, and the consequence that causes is that the oil smoke gushes out user's face, has hurt user's health, has greatly reduced user's use and has experienced. Therefore, based on the actual situation of oil smoke escape and the user experience, the best form of the smoke baffle plate is to open the front smoke baffle plate 3 to protect the user and then open the two side smoke baffle plates to avoid the oil smoke escape.

The invention adopts the scheme that the smoke baffles are folded step by step to achieve the purposes of protecting three surfaces and reducing the cleaning area and time, on one hand, the smoke collecting effect can be improved on the premise of ensuring the appearance of the product by folding step by step, on the other hand, the number of gaps and dead corners is reduced by the folding structure, the cleaning time is greatly reduced, and simultaneously, the air supplementing channels are formed by the gaps of the two side smoke baffles and the smoke collecting cavity, so that the oil smoke on the left outer edge and the right outer edge can be sucked as soon as possible, and the oil smoke adhesion caused by the rotation of the oil smoke is avoided.

Claims

1. The utility model provides a range hood, keeps off cigarette board (41) and second side and keeps off cigarette board (42), its characterized in that including collection petticoat pipe (1), preceding fender cigarette board (3), first side:

the front smoke baffle (3) is rotationally arranged below the front side of the smoke collecting cover (1) and can be in a first position extending transversely and a second position extending longitudinally;

the first side keeps off cigarette board (41) and second side and keeps off cigarette board (42) and set up in the front with rotating respectively and keep off both ends about cigarette board (3) to can be in with preceding cigarette board (3) syntropy extended third position and relative preceding cigarette board (3) turn over respectively to collection petticoat pipe (1) left and right sides below longitudinal extension's fourth position.

2. The range hood of claim 1, wherein: the cigarette box is characterized by further comprising a first driving device (51) and a gear set (52) which are used for driving the front cigarette blocking plate (3), wherein the gear set (52) comprises a first gear (521) driven by the first driving device (51) to rotate and a second gear (522) meshed with the first gear (521), rotating shafts of the first gear (521) and the second gear (522) extend in the left-right direction, and the second gear (522) is connected with the front cigarette blocking plate (3).

3. The range hood of claim 2, wherein: still include with collection petticoat pipe (1) fixed connection's support (55), first drive arrangement (51) and first gear (521) all set up in collection petticoat pipe (1) top, be close to the position of collection petticoat pipe (1) front side, second gear (522) are located collection petticoat pipe (1) below, are close to the position of collection petticoat pipe (1) front side, first gear (521) pass collection petticoat pipe (1) and mesh with second gear (522), support (55) extend to collection petticoat pipe (1) below from collection petticoat pipe (1) top, first gear (521) and second gear (522) rotate with support (55) respectively and are connected.

4. The range hood of claim 2, wherein: the gear set (52) is provided with two groups, two first gears (521) are respectively arranged at positions corresponding to the left end and the right end of the front smoke baffle (3), two second gears (522) are respectively arranged at the left end and the right end of the front smoke baffle (3), and the two first gears (521) are connected through a synchronizing rod (53).

5. The range hood of claim 2, wherein: still including being used for driving second drive arrangement (54) that keep off cigarette board (3) upset before first side keeps off cigarette board (41), second side keeps off cigarette board (42) relatively, second drive arrangement (54) have two, set up respectively and keep off both ends about cigarette board (3) in the front, the front end that first side kept off cigarette board (41) has first connecting portion (411) of being connected with the output of corresponding second drive arrangement (54), the front end that second side kept off cigarette board (42) has second connecting portion (421) of being connected with the output of corresponding second drive arrangement (54).

6. The range hood of claim 5, wherein: thereby still including infrared induction subassembly (6) that are used for detecting current culinary art environment control two drive arrangement (54) synchronous working, infrared induction subassembly (6) set up on collection petticoat pipe (1), infrared induction subassembly (6) are integrated to be used for detecting and are located the infrared distance measuring sensor of the distance between cooking utensils (101) of range hood below and be used for detecting the infrared temperature sensor of cooking utensils (101) top temperature variation.

7. The range hood of claim 5, wherein: thereby still including infrared induction subassembly (6) that are used for detecting two second drive arrangement (54) independent workings of current culinary art environment control, infrared induction subassembly (6) have two, set up respectively in the left and right sides of collection petticoat pipe (1), infrared induction subassembly (6) are integrated to be used for detecting and are located the infrared distance measuring sensor of the distance between the corresponding side cooking utensils (101) of range hood below and be used for detecting the infrared temperature sensor of corresponding side cooking utensils (101) top temperature variation.

8. The range hood according to any one of claims 1 to 7, wherein: through-hole (43) have been seted up on first side cigarette board (41) and the second side cigarette board (42) respectively, when first side cigarette board (41) and second side cigarette board (42) are in the fourth position, through-hole (43) are in the top that first side cigarette board (41) and second side cigarette board (42) were kept off.

9. A control method of a range hood as claimed in claim 6, wherein: the method comprises the following steps:

1) the range hood is started, the front smoke baffle (3) is located at a first position extending transversely, and the first side smoke baffle (41) and the second side smoke baffle (42) are located at a third position extending in the same direction as the front smoke baffle (3);

2) the first driving device (51) is started, the first gear (521) of the gear set (52) is driven to rotate, so that the second gear (522) is driven to rotate, and the front smoke baffle (3) is turned from the first position to the second position extending longitudinally by taking the rotating shaft of the second gear (522) as a rotating shaft;

3) when the two second driving devices (54) work synchronously, the infrared distance measuring sensor of the infrared sensing assembly (6) detects whether an obstacle exists on any cooker (101), if so, the step 4 is carried out, and if not, the step is repeated;

4) when the two second driving devices (54) work synchronously, the infrared temperature sensor of the infrared sensing assembly (6) detects the real-time temperature T of the obstacle, judges whether the T is greater than the preset temperature T0, if yes, the step 5 is carried out, and if not, the step is repeated;

5) when the two second driving devices (54) work synchronously, the second driving devices (54) are started to drive the first side smoke baffle plate (41) and the second side smoke baffle plate (42) to turn backwards to a fourth position below the left side and the right side of the smoke collecting hood (1) by taking an output shaft of the second driving devices (54) as a rotating shaft;

6) the range hood is closed, the second driving device (54) runs in the reverse direction, the first side smoke baffle plate (41) and the second side smoke baffle plate (42) retract to the third position, then the first driving device (51) runs in the reverse direction, the front smoke baffle plate (3) retracts to the first position, and the first driving device (51) and the second driving device (54) rotate to the overcurrent protection state to complete one-time work.

10. A control method of a range hood as claimed in claim 7, wherein: the method comprises the following steps:

3) an infrared distance measuring sensor of the infrared sensing assembly (6) detects whether an obstacle exists on the stove (101) on the corresponding side, if so, the step 4 is carried out, and if not, the step is repeated;

4) detecting the real-time temperature T of the obstacle by an infrared temperature sensor of an infrared sensing assembly (6) at one side of the obstacle, judging whether the T is greater than the preset temperature T0, if so, entering the step 5), and if not, repeating the step;

5) the second driving device (54) opposite to the side where the obstacle with T & gt T0 is detected is opened, and the side smoke baffle plate on the corresponding side of the second driving device (54) is driven to turn backwards to a fourth position below the left side and the right side of the smoke collecting hood (1) by taking the output shaft of the second driving device (54) as a rotating shaft;

6) the range hood is closed, the second driving device (54) runs in the reverse direction, the first side smoke baffle plate (41) and/or the second side smoke baffle plate (42) retracts to the third position, then the first driving device (51) runs in the reverse direction, the front smoke baffle plate (3) retracts to the first position, and the first driving device (51) and the second driving device (54) rotate to the overcurrent protection state to complete one-time operation.