CN113108345B

CN113108345B - Range hood, working method of range hood and kitchen appliance

Info

Publication number: CN113108345B
Application number: CN202110427358.2A
Authority: CN
Inventors: 马志豪; 孙斌; 翁建松
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2022-05-17
Anticipated expiration: 2041-04-21
Also published as: CN113108345A

Abstract

The invention relates to a range hood, which comprises a casing and a fan arranged in the casing, wherein a smoke collection port for oil smoke to enter is formed in the casing, at least two plate bodies which can be opened and closed and can swing relative to the plane where the smoke collection port is located are covered on the smoke collection port, and a detector is arranged on the side wall of the casing corresponding to each plate body. The oil smoke sucking machine can solve the problem of oil smoke escape caused by side blowing. The invention also relates to a working method of the range hood, when the range hood works, the smoke collection port is controlled to be opened; and when detecting that the side blows, the inclined swinging of the plate body that this side corresponds is controlled, and the inclined swinging direction is: the air is guided to flow to the direction of the smoke collecting port area between the plate body and the adjacent plate body. The working method of the range hood can avoid the escape of the oil smoke. The invention also relates to a cooking appliance which comprises the range hood and a cooking machine arranged in the shell. The cooking appliance has rich functions and good oil fume suction effect.

Description

Range hood, working method of range hood and kitchen appliance

Technical Field

The invention relates to a range hood, a working method of the range hood and kitchen appliances integrally applied with the range hood.

Background

The range hood is used as an indispensable kitchen appliance for people, and has the main functions of sucking oil smoke generated during cooking by a user from an air inlet through an impeller of a fan system, filtering the oil smoke by using an air inlet filter screen and the impeller, and discharging the filtered oil smoke from an air outlet, thereby completing the purification work of the kitchen environment. When daily lampblack absorber used, the side wind can appear and blow away the condition with the oil smoke from the side, very big influence range hood's oil absorption cigarette effect on the one hand, on the other hand, can make a large amount of oil smoke be detained in the kitchen, seriously influence the healthy of culinary art person.

The existing range hood mainly solves the problems by means of large air volume, and the large air volume effect of the range hood is realized by means of arranging two fans in the range hood or means of changing the structure of the fans in the prior art. For example, in the extractor hood of the chinese utility model with the granted publication number CN208170469U (application number 201820240288.3), two fans are used, and the extractor hood with such a structure has a large overall structure and high cost. If the chinese utility model patent with the publication number CN20825368U (application number 201820673248.8) is also entitled "large air volume fan for range hood", the scheme therein increases the oil smoke suction air volume by improving the fan structure, and the structure has a limited effect on solving the problem of oil smoke escape caused by side blowing.

Disclosure of Invention

The first technical problem to be solved by the invention is to provide a range hood capable of effectively solving the problem of oil smoke escape caused by side blowing aiming at the prior art.

The second technical problem to be solved by the present invention is to provide a working method of a range hood capable of effectively improving the oil smoke absorption effect under the condition of a side wind, aiming at the above prior art.

The third technical problem to be solved by the present invention is to provide a kitchen appliance with more abundant functions and better oil smoke absorption effect aiming at the prior art.

The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides a range hood, includes casing, the fan of setting in the casing, the collection mouth that fuel feeding cigarette got into has on the casing, its characterized in that: the smoke collection port is covered with at least two plate bodies which can be opened and closed and can swing relative to the plane where the smoke collection port is located, and a detector for detecting the lateral blowing parameters is arranged on the side wall of the casing corresponding to each plate body.

In order to conveniently and pertinently suck the oil smoke in different areas, at least two oil smoke channels are arranged in the machine shell, and the air inlet of each oil smoke channel is correspondingly provided with one plate body.

As an improvement, the air inlets of the oil smoke channels are communicated to form the smoke collecting port; the air outlets of the oil smoke channels are communicated, and the fan is arranged in the communication area of the air outlets.

In order to facilitate the independent suction of oil smoke in each cooking area, an oil smoke channel is arranged in the machine shell corresponding to each cooking area on the stove, and an air inlet of the oil smoke channel is arranged facing the cooking area.

In order to better guide the side airflow to flow to the range capable of being sucked and further avoid the oil smoke from escaping, the plate body comprises a base plate, a deformable deformation membrane which is connected with the base plate and a driving mechanism which is arranged between the base plate and the deformation membrane and is used for driving the deformation membrane to deform.

Preferably, the driving mechanism comprises a driving source fixedly arranged on the substrate and an elastic plate in transmission connection with the driving source through a transmission assembly, and the elastic plate can arch towards the deformation film under the action of the driving source to drive the deformation film to deform.

The structure is simple, and the driving source is a first motor;

the transmission assembly comprises a screw rod connected to the first motor and a pair of sliding blocks sleeved on the screw rod corresponding to two sides of the elastic plate, and the pair of sliding blocks move along opposite directions along with the rotation of the screw rod.

Preferably, the number of the elastic plates is at least three;

the distance between the two corresponding sliding blocks of each elastic plate is the same, and the width of the elastic plates arranged outwards from the center position in the arrangement direction of the elastic plates is gradually reduced;

or the width of each elastic plate is the same, and in the arrangement direction of the elastic plates, the screw pitch on the screw rod is gradually reduced corresponding to the elastic plates arranged outwards from the central position.

In order to ensure the reliability of the sliding direction of the sliding blocks, guide rails are arranged on the base plate corresponding to each pair of sliding blocks, guide grooves are formed in the guide rails, and guide parts capable of being placed in the guide grooves are arranged on the sliding blocks.

Preferably, a driving assembly for driving the plate body to swing is further disposed on the substrate.

Simple in structure, the drive assembly comprises

The telescopic rod can perform telescopic motion along the opening and closing direction of the smoke collecting port, and the lower end of the telescopic rod is hinged with the plate body through a hinge shaft;

the second motor is fixedly arranged on the telescopic rod, and the driving end of the second motor is connected with one end of the hinged shaft;

and the transmission block is fixedly arranged on the base plate and is connected with the other end of the hinge shaft.

The technical scheme adopted by the invention for solving the second technical problem is as follows: when the range hood carries out the oil absorption cigarette during operation, real-time detection acquires the wind pressure data P of each side of range hood, if the wind pressure data P of range hood one side surpassed the side-blown wind pressure threshold value P0 of settlement, then judge that there is the side direction to blow, the control is opened at the plate body on the side direction route of blowing to the control is close to the plate body slope swing of the incoming wind direction, and the slope swing direction of plate body is: the air is guided to flow to the smoke collecting port area between the opening plate bodies.

In order to further reduce the oil smoke escape volume, the surface of the plate body is controlled to arch towards the airflow direction while the plate body is controlled to tilt and swing, and the arch height parameter of the surface of the plate body is adjusted according to the wind pressure data.

The technical scheme adopted by the invention for solving the third technical problem is as follows: an electric cooking appliance characterized in that: the range hood comprises the range hood, a cooking machine is further arranged in the casing, the cooking machine separates the space in the casing into two oil smoke channels, the cooking machine is arranged at the upstream of the fan, and a door body of the cooking machine is embedded in the front end face of the casing.

As an improvement, the oil fume channel is positioned on two sides of the cooking machine.

As an improvement, the cooking appliance applies the working method of the range hood.

Compared with the prior art, the invention has the advantages that: the range hood is provided with the plurality of plate bodies at the smoke collection port, so that different plate bodies can be opened to suck oil smoke aiming at the oil smoke generated in different areas, and the range hood has stronger oil smoke suction pertinence and more suction force. On this basis, when detecting that there is the side direction to blow, the plate body on the route of should blowing can be through the swing cooperation, and then the guiding air current flows to the range that the oil smoke can be smoked, avoids the side direction to blow away the oil smoke and the oil smoke escape condition that leads to, has promoted the oil absorption cigarette effect that has under the side direction condition of blowing greatly, has promoted user experience.

The working method of the range hood in the invention provides a method for adjusting the swing of the plate body on the lateral blowing airflow path, and the method can reduce the escape of oil smoke, even completely avoid the escape of oil smoke, and improve the effect of absorbing the oil smoke.

And applied the cooking appliance of aforementioned lampblack absorber, the function is abundanter and little in kitchen occupation space, and the oil absorption cigarette effect is better, has promoted user experience.

Drawings

Fig. 1 is a perspective view of a cooking appliance in an embodiment of the present invention.

Fig. 2 is an internal structure diagram of the range hood in the embodiment of the present invention.

Fig. 3 is an exploded perspective view of a plate body according to an embodiment of the present invention.

Fig. 4 is another view of fig. 3.

Fig. 5 is a usage state diagram of a side plate body in a tilted swinging state according to an embodiment of the present invention.

Fig. 6 is a view showing the flow of air flow and soot when the left plate 2 is not tilted and swung when the side air blowing is performed from left to right.

Fig. 7 is a view showing the flow of air flow and soot in a state where the left plate 2 is tilted when the air is blown from left to right.

Detailed Description

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

As shown in fig. 1 and fig. 2, the range hood in this embodiment includes a casing 1 and a fan disposed in the casing 1, a smoke collection port 11 for oil smoke to enter is generally disposed on the casing 1 and facing a cooking area of a kitchen range, and a filter screen is disposed on the smoke collection port 11 so as to implement oil smoke separation.

In addition, at least two plate bodies 2 which can be opened and closed and can swing relative to the plane where the smoke collection port 11 is located are covered outside the filter screen of the smoke collection port 11, so that different areas of the smoke collection port 11 can be controlled to be communicated through the opening and closing of the plate bodies 2, and the oil smoke is sucked into the internal oil smoke channel 12 of the machine shell 1 through the opened smoke collection port 11.

At least two oil smoke channels 12 are arranged in the machine shell 1 in the embodiment, in order to better perform oil smoke suction on different cooking areas of the cooker, the oil smoke suction is more targeted, one oil smoke channel 12 is arranged in the machine shell 1 corresponding to each cooking area on the cooker, and an air inlet of each oil smoke channel 12 faces the cooking area. In the prior art, a kitchen range is usually provided with a left burner and a right burner, and a left cooking area and a right cooking area exist correspondingly, so that two oil smoke channels 12 in a casing 1 can be arranged and distributed along the left and right directions. The air inlet of each oil smoke channel 12 is correspondingly provided with the plate body 2 which can open and close the air inlet and can obliquely swing left and right relative to the air inlet. The air inlets of the oil smoke channels 12 are communicated to form the smoke collecting port 11, so that the structural integrity of the range hood exposed in the visual range of users is better. Simultaneously, the air outlets of the oil smoke channels 12 are communicated, and the fan is arranged in the communication area of each air outlet, so that the smoke exhaust requirements of the oil smoke channels 12 can be guaranteed only by arranging one fan, the disturbance when the oil smoke channels 12 simultaneously discharge smoke is avoided, and the possibility of oil smoke escape is correspondingly reduced.

In addition, the swing arrangement mode of the plate body 2 is to reduce the influence of side blowing on oil smoke, and then solve the problem of oil smoke escape caused by side blowing. In order to effectively detect the side blowing condition, a detector for detecting the side blowing parameter is arranged on the side wall of the casing 1 corresponding to each plate body 2, so that the side blowing condition at each plate body 2 can be detected. The detector in this embodiment adopts the wind pressure sensor, also can select to use other detection products that can detect the side blow condition as required. In the product research and development stage, can confirm suitable wind pressure threshold value through experimental test, and then compare through the wind pressure value with real-time detection and the wind pressure threshold value that sets up, and then judge the side condition of blowing of each plate body 2 side.

As shown in fig. 3 and 4, the plate body 2 in the present embodiment includes a substrate 21, a deformable film 22 connected to the substrate 21 and deformable, and a driving mechanism disposed between the substrate 21 and the deformable film 22 to drive the deformable film 22 to deform. The peripheral phase deformation film 22 of the base plate 21 is bent in the direction to form flanges, so that the flanges surround a mounting space for mounting the drive mechanism. The driving mechanism comprises a driving source 23 fixedly arranged on the substrate 21 and an elastic plate 25 in transmission connection with the driving source 23 through a transmission assembly 24, wherein the elastic plate 25 can arch towards the deformation film 22 under the action of the driving source 23 to drive the deformation film 22 to deform. The number and distribution positions of the elastic plates 25 are set according to the deformation requirement of the deformation film 22 as required. In order to ensure that the deformation film 22 can be protruded well, the elastic plate 25 in this embodiment is provided with at least three. It is generally required that the projection height of the center portion of the deformed film 22 is larger than the projection heights of both sides.

Specifically, the driving source 23 is a first motor, the transmission assembly 24 includes a screw 241 connected to the first motor, and a pair of sliders 242 sleeved on the screw 241 corresponding to two sides of each elastic plate 25, and the pair of sliders 242 moves in opposite directions along with the rotation of the screw 241, that is, two sliders 242 of the pair of sliders 242 are relatively close to each other to arch the elastic plate 25, or two sliders 242 of the pair of sliders 242 are relatively separated from each other to reset the elastic plate 25. Since the bulging curve of the deformable film 22 is adapted to the air flow guiding requirements, the bulging height of the deformable film 22 at each position is different, and the bulging height of the respective elastic plates 25 is different. However, since the lead screws 241 simultaneously act on the respective pairs of sliders 242 during the driving of the elastic plate 25, the requirements of the elastic plate 25 for different bulging heights can be satisfied by the following two arrangements. One way is as follows: the distance between the two sliders 242 corresponding to each of the elastic plates 25 is the same, and the width of the elastic plates 25 arranged outward from the center position in the arrangement direction of the elastic plates 25 is gradually reduced. The other mode is as follows: each of the elastic plates 25 has the same width, and the pitch of the screw 241 is gradually reduced in the arrangement direction of the elastic plates 25 corresponding to the elastic plates 25 arranged outward from the center position. One setting mode is selected according to specific situations.

In order to ensure the stability of the moving direction of each slider 242, a guide rail 211 is disposed on the base plate 21 corresponding to each pair of sliders 242, a guide slot 2111 is disposed on the guide rail 211, and a guide part 2421 capable of being placed in the guide slot 2111 is disposed on the slider 242, so that the slider 242 moves along the sliding slot on the guide rail 211 under the driving action of the screw rod 241, and the arching and resetting of the elastic plate 25 are further achieved.

In order to swing the plate body 2, a driving unit for driving the plate body 2 to swing is further provided on the base plate 21. This drive assembly includes telescopic link 4, second motor 5 and transmission piece 6, and wherein telescopic link 4 sets up in casing 1 and can carry out concertina movement along the direction that opens and shuts of collection cigarette mouth 11, and the lower extreme of telescopic link 4 passes through the articulated shaft and is articulated mutually with plate body 2. The telescopic rod 4 can be driven by various existing drivers, for example, the telescopic rod 4 can be driven by an air cylinder. When the telescopic rod 4 is unfolded, the plate body 2 is pushed to be away from the smoke collection port 11, then the smoke collection port 11 is opened, and oil smoke can enter the oil smoke channel 12 through the smoke collection port 11. When the telescopic rod 4 retracts, the plate body 2 covers the smoke collecting port 11 in the corresponding range, and the oil smoke cannot enter the oil smoke channel 12 through the smoke collecting port 11 corresponding to the position of the plate body 2. The second motor 5 is fixedly arranged on the telescopic rod 4, and the driving end of the second motor is connected with one end of the hinged shaft. The transmission block 6 is fixedly arranged on the base plate 21 and is connected with the other end of the hinge shaft. So need swing plate body 2 under the state that plate body 2 was opened and when making plate body 2 be in the tilt state, then control second motor 5 work, second electrode drive articulated shaft rotates, and then drives base plate 21 and carry out the slope and rotate.

When the range hood works, whether each plate body 2 is opened or not can be controlled according to specific requirements. For the range hood with two oil smoke channels 12 distributed on the left and right, when only the left burner or only the right burner on the range is used for cooking and the oil smoke generated in the working process is small, the telescopic rod 4 can be controlled only to push the plate body 2 on the side to be opened, so that the oil smoke is discharged from the oil smoke channel 12 on the corresponding side, the oil smoke is sucked in a targeted manner, and the oil smoke suction effect is good. When the oil smoke concentration is large or two burners on the stove are used for cooking, the plate bodies 2 on two sides can be controlled to be opened, so that the oil smoke can be sufficiently sucked, and the oil smoke is prevented from escaping.

As shown in fig. 5, in order to avoid the influence of the side blowing on the oil smoke suction, the operating method of the range hood includes: when the range hood carries out the oil absorption cigarette during operation, real-time detection acquires the wind pressure data P of each side of range hood, if the wind pressure data P of range hood one side surpassed the side-blown wind pressure threshold value P0 of settlement, then judge that there is the side direction to blow, the control is opened at the plate body 2 on the side direction route of blowing to the control is close to the 2 slope swings of plate body of the incoming wind direction, and the slope swing direction of plate body 2 is: the air is directed in the direction of flow towards the area of the smoke collection opening 11 between the opening plates 2. For the existing kitchen range, because the kitchen range is provided with a left cooking range and a right cooking range, the range hood is provided with two plate bodies 2, the two plate bodies 2 are distributed along the left and right directions, and the lateral blowing mainly refers to the wind blowing from the left to the right or the wind blowing from the right to the left. Use the side direction of turning right from a left side to blow and blow as the example, when detecting the side direction of this direction and blow, two plate bodies 2 are all opened, and the right portion of this plate body 2 in control left side upwards lifts and realizes the slope swing, so the air current can have the trend of left side plate body 2 right side and rebound under the slope direction of this plate body 2, and then can drive the oil smoke and also regional removal before the left and right sides plate body 2, and then the oil smoke is more in the oral area from the 2 left sides of right side plate body enters into range hood's casing 1.

In addition, the surface of the plate body 2 is controlled to be arched in the air flow direction while the plate body 2 is controlled to be tilted, that is, the arched operation of the surface of the plate body 2 is performed by the arching drive of the deformable film 22. The arching height parameter on the surface of the plate body 2 is adjusted according to the wind pressure data, the larger the wind pressure data is, the higher the arching height is, so that in the process of guiding the air flow to move upwards in an inclined mode, the angle of the air flow flowing upwards is guided to bend through the arc-shaped arching of the plate body 2, the angle of the air flow moving upwards is larger, the probability of the air flow moving towards the lateral direction is reduced, and the probability of oil smoke escaping towards the lateral direction is reduced. Fig. 6 is a view showing the flow of air flow and soot when the left plate 2 is not tilted and swung when the side air blowing is performed from left to right. Fig. 7 is a view showing the flow of air flow and soot in a state where the left plate 2 is tilted when the air is blown from left to right. As compared with fig. 6 and 7, when the left plate body 2 swings obliquely, the possibility of lateral escape of the soot is lower.

The oil smoke channel 12 in the casing 1 of the range hood can be specially formed by surrounding, or can be formed by distributing and surrounding the components in the casing 1. As disclosed in this embodiment, the cooking appliance applies the range hood, and on the basis of the structure of the range hood, as shown in fig. 1 and fig. 2, the cooking machine 100 is further disposed in the casing 1, and a hole corresponding to a door portion of the cooking machine 100 is formed in the front end surface of the casing 1, so that the door portion of the cooking machine 100 can be embedded in the front end surface of the casing 1 to perform opening and closing actions relative to the cooking machine 100. This cooking machine 100 sets up in the region that is close to the lampblack absorber air inlet, still is provided with in the left and right sides of cooking machine 100 and leads the oiled-plate in casing 1, leads the both sides outer wall of oiled-plate, cooking machine 100, the front and back lateral wall of casing 1 then encloses jointly and establishes two oil smoke passageways 12 that form, these two oil smoke passageways 12 are located the left and right sides of cooking machine 100 respectively. And a fan is disposed downstream of the cooking machine 100 in the discharge direction of the smoke. The cooking appliance can also work by applying the working method of the range hood.

The cooking machine 100 may be a steam box, an oven, a microwave oven, a steaming and baking all-in-one machine, or a steaming and baking all-in-one machine. With culinary art machine 100 setting in the lampblack absorber, can not influence the normal work of lampblack absorber, effectively saved the space of putting in the kitchen simultaneously, the space utilization in kitchen is higher.

According to the range hood disclosed by the invention, the plurality of plate bodies 2 are arranged at the smoke collection port 11, so that different plate bodies 2 can be opened to suck oil smoke aiming at the oil smoke generated in different areas, and the range hood is stronger in oil smoke suction pertinence and more in suction force. On this basis, when detecting that there is the side direction to blow, the plate body 2 on the route of should blowing can be through the swing cooperation, and then the guiding air current flows to the range that the oil smoke can be smoked, avoids the side direction to blow away the oil smoke and the oil smoke escape condition that leads to, has promoted the oil absorption cigarette effect that has under the side direction condition of blowing greatly, has promoted user experience.

The working method of the range hood in the invention provides a method for adjusting the swing of the plate body 2 on the lateral blowing airflow path, and the method can reduce the escape of oil smoke, even completely avoid the escape of oil smoke, and improve the effect of absorbing the oil smoke.

Claims

1. The utility model provides a range hood, includes casing (1), sets up the fan in casing (1), the collection mouth (11) that have the confession oil smoke on casing (1) and get into, its characterized in that: the smoke collection port (11) is covered with at least two plate bodies (2) which can be opened and closed and can swing relative to the plane where the smoke collection port (11) is located, and the side wall of the machine shell (1) is provided with a detector corresponding to each plate body (2) and used for detecting lateral blowing parameters;

the plate body (2) comprises a substrate (21), a deformable deformation film (22) which is connected with the substrate (21), and a driving mechanism which is arranged between the substrate (21) and the deformation film (22) and drives the deformation film (22) to deform;

the driving mechanism comprises a driving source (23) fixedly arranged on the substrate (21) and an elastic plate (25) in transmission connection with the driving source (23) through a transmission assembly (24), wherein the elastic plate (25) can arch towards the deformation film (22) under the action of the driving source (23) to drive the deformation film (22) to deform.

2. The range hood of claim 1, wherein: at least two oil smoke channels (12) are arranged in the machine shell (1), and one plate body (2) is correspondingly arranged on an air inlet of each oil smoke channel (12).

3. The range hood of claim 2, wherein: the air inlets of the oil smoke channels (12) are communicated to form the smoke collecting port (11); the air outlets of the oil smoke channels (12) are communicated, and the fan is arranged in the communication area of the air outlets.

4. The range hood of claim 2, wherein: an oil smoke channel (12) is arranged in the machine shell (1) corresponding to each cooking area on the kitchen range, and an air inlet of the oil smoke channel (12) faces the cooking area.

5. The range hood according to any one of claims 1 to 4, wherein: the driving source (23) is a first motor;

the transmission assembly (24) comprises a screw rod (241) connected to the first motor, and a pair of sliding blocks (242) sleeved on the screw rod (241) corresponding to two sides of the elastic plate (25), wherein the pair of sliding blocks (242) move along opposite directions along with the rotation of the screw rod (241).

6. The range hood of claim 5, wherein: the number of the elastic plates (25) is at least three;

the distance between the two corresponding sliding blocks (242) of each elastic plate (25) is the same, and the width of the elastic plates (25) arranged outwards from the center in the arrangement direction of the elastic plates (25) is gradually reduced;

or the width of each elastic plate (25) is the same, and the screw pitch on the screw rod (241) is gradually reduced corresponding to the elastic plates (25) arranged outwards from the central position in the arrangement direction of the elastic plates (25).

7. The range hood of claim 5, wherein: the base plate (21) is provided with guide rails (211) corresponding to each pair of sliding blocks (242), the guide rails (211) are provided with guide grooves (2111), and the sliding blocks (242) are provided with guide parts (2421) capable of being placed into the guide grooves (2111).

8. The range hood according to any one of claims 1 to 4, wherein: the base plate (21) is also provided with a driving assembly for driving the plate body (2) to swing.

9. The range hood of claim 8, wherein: the drive assembly comprises

The telescopic rod (4) can perform telescopic motion along the opening and closing direction of the smoke collecting port (11), and the lower end of the telescopic rod (4) is hinged with the plate body (2) through a hinged shaft;

the second motor (5) is fixedly arranged on the telescopic rod (4), and the driving end of the second motor is connected with one end of the hinged shaft;

and the transmission block (6) is fixedly arranged on the base plate (21) and is connected with the other end of the hinge shaft.

10. A method of operating a range hood as claimed in any one of claims 1 to 9, wherein: when the range hood carries out the oil absorption cigarette during operation, the wind pressure data P of each side of lampblack absorber is acquireed to real-time detection, if the wind pressure data P of lampblack absorber one side surpasss the side-blown wind pressure threshold value P0 of settlement, then judges that there is the side direction to blow, and control plate body (2) on the side direction is blown the route and is opened to the control is close to plate body (2) slope swing of incoming wind direction, and the slope swing direction of plate body (2) is: the air is guided in the direction of flow to the area of the smoke collection opening (11) between the opening plate bodies (2).

11. The operating method of a range hood according to claim 10, wherein: the control plate body (2) is controlled to obliquely swing, meanwhile, the surface of the plate body (2) is controlled to arch towards the airflow direction, and the arching height parameter of the surface of the plate body (2) is adjusted according to the wind pressure data.

12. An electric cooking appliance characterized in that: the range hood comprises the range hood of any one of claims 2 to 9, a cooking machine (100) is further arranged in the machine shell (1), the cooking machine (100) separates the space in the machine shell (1) into two oil fume channels (12), the cooking machine (100) is arranged at the upstream of the fan, and the door body of the cooking machine (100) is embedded in the front end face of the machine shell (1).

13. The cooking appliance according to claim 12, wherein: the cooking fume passage (12) is located at both sides of the cooking machine (100).

14. The cooking appliance according to claim 12, wherein: the operating method of the range hood according to claim 10 or 11 is applied.