CN216448231U

CN216448231U - Lampblack absorber air curtain system and lampblack absorber

Info

Publication number: CN216448231U
Application number: CN202122365449.6U
Authority: CN
Inventors: 覃进武; 张涛; 龚圆杰
Original assignee: Guangdong Chunmi Electrical Technology Co Ltd
Current assignee: Guangdong Chunmi Electrical Technology Co Ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-05-06
Anticipated expiration: 2031-09-28

Abstract

The disclosure relates to a range hood air curtain system and a range hood, and belongs to the technical field of range hoods. Lampblack absorber air curtain system includes: the air curtain device comprises a panel, an air inlet device, an air curtain fan assembly, a flow guide device and an air curtain nozzle; the panel is a flat plate with the external dimension matched with a matched range hood; the air inlet device, the air curtain fan assembly, the flow guide device and the air curtain nozzle are all arranged on the panel; the air inlet device comprises a main body, wherein a plurality of air inlet channels which are parallel to each other are arranged in the main body along the air inlet direction to form a grid-shaped air inlet; the air curtain fan assembly comprises an air curtain fan, the input end of the air curtain fan assembly is connected with the output end of the air inlet device, and the output end of the air curtain fan assembly is connected with the flow guide device; the flow guide device guides the air output by the air curtain fan assembly to the air curtain nozzle to be sprayed out, so that an air curtain is formed. The range hood provided by the utility model has good smoking and odor leakage prevention effects.

Description

Lampblack absorber air curtain system and lampblack absorber

Technical Field

The utility model relates to a lampblack absorber technical field especially relates to a lampblack absorber air curtain system and lampblack absorber.

Background

The existing range hood products are generally divided into a top-suction range hood, a side-suction range hood, a near-suction range hood and the like, and the existing different smoking modes have different smoking effects. However, even if the smoking effect of the existing range hood is good, the phenomena of smoke leakage and smell leakage still occur.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a range hood air curtain system and a range hood, and solves the problems in the prior art. The technical scheme provided by the utility model is as follows:

in a first aspect, the present disclosure provides a range hood air curtain system, comprising: the air curtain device comprises a panel, an air inlet device, an air curtain fan assembly, a flow guide device and an air curtain nozzle;

the panel is a flat plate with the shape and size matched with a matched range hood; the air inlet device, the air curtain fan assembly, the flow guide device and the air curtain nozzle are all arranged on the panel;

the air inlet device comprises a main body, wherein a plurality of air inlet channels which are parallel to each other are arranged in the main body along the air inlet direction to form a grid-shaped air inlet;

the air curtain fan assembly comprises an air curtain fan, the input end of the air curtain fan assembly is connected with the output end of the air inlet device, and the output end of the air curtain fan assembly is connected with the flow guide device;

the flow guide device guides the air output by the air curtain fan assembly to the air curtain nozzle to be sprayed out, so that an air curtain is formed.

In one embodiment of the first aspect, the curtain fan assembly further comprises: an air inlet interface of the air curtain fan and an air outlet interface of the air curtain fan;

the air curtain fan air inlet interface and the air curtain fan air outlet interface are arranged on the first surface of the panel;

the upper side of the air inlet interface of the air curtain fan is provided with a first channel which is concave relative to the first surface, an input end formed between the upper side of the air inlet interface of the air curtain fan and the first surface is butted with a grid-shaped air inlet of the air inlet device, the lower side of the air inlet interface of the air curtain fan is provided with a circular outlet communicated with the first channel, and the circular outlet is connected with an input port of the air curtain fan;

the upper side of the air outlet interface of the air curtain fan is provided with a circular inlet, and the circular inlet is connected with an output port of the air curtain fan; the lower side of the air curtain fan air outlet interface is provided with a second channel which is concave relative to the first surface, the second channel is communicated with the circular inlet, a first interface is formed between the lower side of the air curtain fan air outlet interface and the first surface, and the first interface is in butt joint with the flow guide device.

In one embodiment of the first aspect, the flow guiding device comprises a box body, a second interface is formed at the upper end of the box body, and the second interface is in butt joint with the first interface; the lower end of the box body is provided with a third interface, and the third interface is in butt joint with the input end of the air curtain nozzle; the effective air outlet area of the third interface is larger than the effective air inlet area of the second interface.

In one embodiment of the first aspect, the air curtain nozzle comprises a housing and a plurality of ribs;

the shell is a strip-shaped hollow shell, a rectangular opening is formed in the upper side of the shell along the length direction of the shell, and the rectangular opening is in butt joint with the third interface; the lower side of the shell is provided with a slit-shaped air curtain outlet along the length direction of the shell, and the width of the air curtain outlet is smaller than that of the rectangular opening;

the plurality of reinforcing ribs are arranged inside the shell along the length direction of the shell at equal intervals.

In one embodiment of the first aspect, the plane of the air curtain output by the air curtain nozzle forms an included angle with the panel within a preset range, and the preset range is 20-25 °.

In a second aspect, the present disclosure provides a range hood, comprising: the system comprises a host, a smoke collecting cavity and an air curtain system;

the main machine comprises a main machine box shell and a smoke machine fan; the fan of the range hood is positioned in the main case shell;

the smoke collecting cavity is arranged at the lower part of the main case shell so as to surround a smoke inlet at the lower part of the main case shell;

the air curtain system is any one of the above embodiments of the range hood air curtain system, the upper portion of the panel is installed on the smoke collection cavity, and the panel is installed with one side of the air curtain fan facing the smoke collection cavity.

In one embodiment of the second aspect, the upper portion of the panel is connected to the smoke collection chamber by a first rotation shaft;

the range hood further comprises a rotary supporting assembly, and the rotary supporting assembly comprises a push rod device, a rotary supporting seat and a connecting rod;

the push rod device is arranged on the inner wall of the back of the main case shell and is close to the bottom of the main case shell;

the push rod device includes: the push rod, the push rod groove and the push rod motor;

the push rod is in nested sliding connection with the push rod groove, and the axis of the push rod is perpendicular to the top surface of the shell of the main case;

the rotary supporting seat is fixedly arranged on the inner side of the panel and is close to the lower end of the panel;

one end of the connecting rod is hinged to the bottom end part of the push rod, and the other end of the connecting rod is hinged to the rotary supporting seat;

the push rod motor drives the push rod to linearly move in the push rod groove, so that the panel is driven to rotate around the first rotating shaft to be opened and closed through the connecting rod.

In one embodiment of the second aspect, the maximum angle of rotation of the panel open about the first axis of rotation is 53 °.

In an embodiment of the second aspect, the range hood further comprises: the left baffle and the right baffle are respectively positioned at the left side and the right side of the smoke collection cavity;

the left baffle and the right baffle are both of hinge structures; the central line of the unfolded left baffle and the right baffle can be bent; one end of the left baffle is fixed on the left edge of the panel, and the other end of the left baffle is fixed on the smoke collection cavity; one end of the right baffle is fixed at the edge of the right side of the panel, and the other end of the right baffle is fixed on the smoke collection cavity.

In an embodiment of the second aspect, the range hood further comprises: a human body induction sensor, a lighting lamp, a loudspeaker and a microphone;

the human body induction sensor sends a high level to the illuminating lamp to turn on the illuminating lamp when acquiring a human body induction signal, and sends a low level to the illuminating lamp to turn off the illuminating lamp when the human body induction signal disappears for a predetermined time;

the microphone and the loudspeaker are used for man-machine interaction with a user.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

the utility model provides an air curtain system of a range hood, which can be arranged on a smoke collection cavity of the range hood and can output an air curtain at the front side of the smoke collection cavity, when the range hood works, a smoke inlet, a wall and the air curtain of the range hood can enclose a negative pressure area, oil smoke and peculiar smell are isolated by the air curtain and can only enter the range hood through the smoke inlet and then be discharged outdoors, and compared with the existing common range hood, the air curtain system of the range hood can improve the oil smoke removing effect of the range hood, prevent odor from escaping and improve the use experience of users. In addition, this air curtain system passes through the grid shape air intake air, can make the air inlet of air curtain fan even, and the noise reduction improves the fan performance.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural diagram of an air curtain system of a range hood provided by an embodiment of the utility model;

FIG. 2 is a schematic structural view of an air curtain fan assembly provided in the present invention;

FIG. 3 is a schematic view of the structure of the deflector 14 of FIG. 1;

FIG. 4 is a schematic view of the construction of the air curtain nozzle 15 of FIG. 1;

FIG. 5 is a front view of a range hood provided by an embodiment of the present invention;

FIG. 6 is a front view of the range hood shown in FIG. 5;

FIG. 7 is a left side view of the range hood shown in FIG. 5;

fig. 8 is a bottom view of the range hood shown in fig. 5.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The upper, lower, left and right in this embodiment are the upper, lower, left and right after the range hood is installed, the back refers to the side of the range hood against the wall after installation, and the front is the side opposite to the back.

Fig. 1 is a schematic structural diagram of an air curtain system of a range hood according to an embodiment of the present invention, and as shown in fig. 1, the air curtain system of the range hood includes: panel 11, air inlet 12, air curtain fan assembly 13, guiding device 14 and air curtain nozzle 15. The panel 11 is a flat plate with the shape and size matched with a matched range hood; the air inlet device 12, the air curtain fan assembly 13, the flow guide device 14 and the air curtain nozzle 15 are all arranged on the panel 11; the air intake device 12 includes a main body 121, and the main body 121 has a plurality of air intake channels 122 parallel to each other along an air intake direction to form a grid-shaped air intake; the air curtain fan assembly 13 comprises an air curtain fan 131, the input end of the air curtain fan assembly 13 is connected with the output end of the air inlet device 12, and the output end of the air curtain fan assembly 13 is connected with the flow guide device 14; the guiding device 14 guides the wind output by the wind curtain fan assembly 13 to the wind curtain nozzle 15 to be sprayed out, so as to form a wind curtain.

The lampblack absorber air curtain system that this embodiment provided can install on the collection smoke chamber of lampblack absorber, can be at collection smoke chamber front side output air curtain, at this lampblack absorber during operation, the smoke inlet of lampblack absorber, wall and air curtain can enclose into a negative pressure region, oil smoke and peculiar smell are isolated by the air curtain, can only enter into this lampblack absorber through the smoke inlet and discharge outdoors, for current ordinary lampblack absorber, can improve the lampblack absorber and remove the oil smoke effect, prevent to run the flavor, promote user use and experience. In addition, this air curtain system passes through the grid shape air intake air, can make the air inlet of air curtain fan even, and the noise reduction improves the fan performance.

Fig. 2 is a schematic structural diagram of the air curtain fan assembly provided in the present invention, and as shown in fig. 2, the air curtain fan assembly 13 further includes: air curtain fan air inlet interface 132, air curtain fan air outlet interface 133. The air curtain fan air inlet 132 and the air curtain fan air outlet 133 are both mounted on the first surface 111 of the panel 11. The upper side of the air inlet interface 132 of the air curtain fan is provided with a first channel which is concave relative to the first surface 111, and an input end is formed between the upper side of the air inlet interface 132 of the air curtain fan and the first surface 111 and is butted with a grid-shaped air inlet of the air inlet device 12; the lower side of the air curtain fan air inlet port 132 is provided with a circular outlet 134 communicated with the first channel, and the circular outlet 134 is connected with an input port of the air curtain fan 131. An air curtain fan 131 (not shown in fig. 2) is mounted between the air curtain fan inlet port 132 and the air curtain fan outlet port 133. The upper side of the air curtain fan air outlet 133 has a circular inlet 135, and the circular inlet 135 is connected to the outlet of the air curtain fan 131. The lower side of the air curtain fan outlet port 133 has a second channel recessed relative to the first surface 111, the second channel is communicated with the circular inlet 135, a first port 136 is formed between the lower side of the air curtain fan outlet port 133 and the first surface 111, and the first port 136 is abutted to the flow guide device 14.

As shown in fig. 2, bolt mounting holes may be further disposed on the air curtain fan inlet port 132 and the air curtain fan outlet port 133, and the air curtain fan inlet port 132 and the air curtain fan outlet port 133 are fixedly mounted on the first surface 111 of the panel 11 through a bolt assembly and the bolt mounting holes. In this embodiment, the interfaces at the two ends of the air curtain fan 131 are independent of the air curtain fan 131, so that the interfaces of different specifications can be conveniently disassembled and replaced.

Fig. 3 is a schematic structural diagram of the air guiding device 14 in fig. 1, and as shown in fig. 3, the air guiding device 14 includes a box 141, an upper end of the box 141 has a second interface 142, and the second interface 142 is connected to the first interface 136; the lower end of the box body 141 is provided with a third interface 143, and the third interface 143 is butted with the input end of the air curtain nozzle 15; the effective air outlet area of the third interface is larger than the effective air inlet area of the second interface. As can be seen from fig. 3, the guiding device 14 transports the wind output by the wind curtain fan assembly 13 through the small aperture to the large aperture third interface 143, and the shape and the interface size of the specific box 141 may be designed according to the needs, which is not described herein again.

Preferably, in the range hood air curtain system provided by the utility model, as shown in fig. 1, the system comprises two air curtain fan assemblies 13, correspondingly, as shown in fig. 3, the guiding device 14 comprises a left box body 141 and a right box body 141 which are respectively used for butting the left air curtain fan assembly 13 and the right air curtain fan assembly 13, the upper end of each box body 141 is provided with a first connector 142, the interiors of the two box bodies 141 on the left side and the right side can be communicated or not communicated, and outlets 143 at the lower ends of the two box bodies 141 can be communicated or not communicated.

Fig. 4 is a schematic structural view of the air curtain nozzle 15 of fig. 1, and as shown in fig. 4, the air curtain nozzle 15 includes a housing 151 and a plurality of ribs 152. The housing 151 is a strip-shaped hollow housing, the upper side of the housing 151 has a rectangular opening 153 along the length direction thereof, and the rectangular opening 153 is in butt joint with the third port 143; the lower side of the housing 151 has a slit-shaped curtain outlet 154 along its length, the width of the curtain outlet 154 being less than the width of the rectangular opening 153. Preferably, a plurality of strengthening rib 152 is in the casing is inside to be followed casing length direction equidistant setting can strengthen the structure steadiness of the hollow shell of rectangular shape on the one hand, and another convenience can make the wind that gets into air curtain nozzle 15 become even, with the output casing length direction wind speed, the even air curtain of amount of wind are in to further improve the air curtain quality, improve the isolated effect of oil smoke.

Fig. 5 is a front view of a range hood according to an embodiment of the present invention, fig. 6 is a front view of the range hood shown in fig. 5, fig. 7 is a left view of the range hood shown in fig. 5, and fig. 8 is a bottom view of the range hood shown in fig. 5. As shown in fig. 5 to 8, the range hood includes: air curtain system 1, host computer 2, collection smoke chamber 3.

As shown in fig. 5, the main unit 2 includes a main unit case housing 21 and a cigarette machine blower 22; a cigarette maker fan 22 is located within the main chassis housing 21. In addition, the main body 2 may further include other common accessories, such as an electric control box, and the like, which are not described herein.

As shown in fig. 5 and 7, the smoke collection chamber 3 is installed at the lower portion of the main cabinet housing 21 to surround the smoke inlet at the lower portion of the main cabinet housing 21.

The air curtain system in the range hood provided by the embodiment is any one of the range hood air curtain systems provided by the above embodiments of the present invention, as shown in fig. 5 and 7, the upper part of the panel 11 of the air curtain system 1 is installed on the smoke collection chamber 3, and one side of the panel 11 where the air curtain fan 131 is installed faces the smoke collection chamber 3. Preferably, the air inlet of the air inlet device 12 of the air curtain system 1 is arranged at the joint where the smoke collecting cavity 3 and the panel 11 are connected, and the air inlet is arranged upward.

The working principle of the range hood shown in fig. 5-8 is as follows: after the smoke machine fan 22 is started, the smoke machine fan 22 generates negative pressure suction during operation, the negative pressure suction can suck the lampblack above the kitchen range into the smoke collection cavity 3 from a smoke inlet at the lower part of the main case shell 21, then the negative pressure suction generated by the smoke machine fan 22 can continuously suck the lampblack in the smoke collection cavity 3 into the smoke machine fan 22, and finally the lampblack is discharged out of a room through a discharge flue of the smoke machine fan 22. The lampblack absorber that this embodiment provided is owing to set up air curtain system 1, at this lampblack absorber during operation, smoke inlet, wall and the air curtain between preceding baffle and the cooking utensils plane can enclose into a negative pressure zone, oil smoke and peculiar smell are isolated by this air curtain, most enter into this lampblack absorber through smoke inlet, then it is outdoor through cigarette machine fan 22 discharge, for current ordinary lampblack absorber, can improve the lampblack absorber and remove the oil smoke effect, prevent to run the flavor, especially showing and having reduced the positive inspiratory oil smoke volume of cooking utensils operating personnel, be favorable to protecting the user healthy, promote user's use and experience. The air curtain air outlet sets up in panel 11 lower extreme, the air curtain that can make the formation forms one with panel 11 and shelters from planar extension, the oily flue gas stream that is blockked by this "plane" is along with the comparatively level and smooth flow in this plane, the air current is undulant less, when receiving the negative pressure effect that cigarette machine fan 22 formed, these oil smoke can be inhaled collection smoke chamber 3 fast, further solved between each plane of air curtain air outlet setting air curtain plane and lampblack absorber when other positions because the contained angle can lead to oily flue gas stream to be blockked the reflection by a plurality of planes greatly, form the problem that stranded turbulent air current and influence the smoking effect in the negative pressure zone.

In an optional embodiment, in order to ensure that the air curtain output by the air curtain system and the stove form a better oil smoke blocking effect, an included angle in a preset range is formed between an air curtain plane output by the air curtain nozzle 15 at the lower end of the air curtain system and the panel 11. Preferably, as shown in fig. 7, the plane of the air curtain output by the air curtain nozzle 15 is at an angle of between 20 ° and 25 ° to the panel 11.

Preferably, in the range hood provided by the embodiment of the present invention, the panel 11 of the air curtain system 1 has a function of being rotatably opened or closed, so that the panel 11 can be rotatably opened to form an included angle with a vertical plane according to a specific oil smoke removing requirement. As shown in fig. 7, the upper part of the panel 11 is connected to said smoke-collecting chamber 3, the panel 11 being rotatable about a first rotation axis 51. In this embodiment, the lampblack absorber still includes the rotation support subassembly, the rotation support subassembly includes push rod device, rotation supporting seat 61, connecting rod 62. Wherein, the push rod device is installed on the back inner wall of the range hood main case shell 21 and is close to the bottom of the main case shell. The push rod device includes: a push rod 63, a push rod groove 64 and a push rod motor 65; the push rod 63 is in nested sliding connection with the push rod groove 64, and the axis of the push rod 63 is perpendicular to the top surface of the main cabinet shell 21, that is, the axis of the push rod 63 is located in a vertical plane; the push rod motor 65 is connected with the push rod 63; the rotary supporting seat 61 is fixedly arranged on the inner side of the panel 11 and is close to the lower end of the panel 11; one end of the connecting rod 62 is hinged to the bottom end of the push rod 63, and the other end is hinged to the rotary supporting seat 61. In this embodiment, the working principle of the rotation support assembly is as follows: the push rod motor 65 drives the push rod 63 to move linearly in the push rod groove 64, so as to drive the panel 11 to rotate around the first rotating shaft 51 through the connecting rod 62 to open and close.

Preferably, as shown in fig. 8, the panel 11 is connected to the smoke collection chamber 3 by means of a hinge 5, the hinge 5 having a first rotation axis 51.

Preferably, as shown in fig. 7, the maximum angle of opening of the rotation of the panel 11 about the first rotation axis 51 is 53 °.

In an alternative embodiment, as shown in fig. 5, the range hood provided by the present invention further includes: the left side baffle 4 and the right side baffle 7 are respectively positioned at the left side and the right side of the smoke collection cavity 3. As shown in fig. 5 and 7, in the range hood provided by the embodiment of the utility model, the left baffle 4 and the right baffle 7 are both of hinge structures, and the central line of the expanded left baffle 4 and the expanded right baffle 7 can be bent; to accommodate the rotatable opening and closing of the panel 11. Specifically, one end of the left baffle 4 is fixed on the left edge of the panel 11, and the other end is fixed on the smoke collection cavity 3; one end of the right baffle 7 is fixed on the right edge of the panel 11, and the other end is fixed on the smoke collection cavity 3.

Preferably, as shown in fig. 7, the range hood may further include: an oil screen 8 and an oil cup 9; wherein, the oil screen 8 is arranged at the bottom of the smoke collecting cavity 3, and the oil screen 8 is used for filtering the sucked oil smoke; the oil cup 9 is arranged at the lower end of the oil screen 8 and used for collecting the oil smoke filtered by the oil screen 8. Through setting up oil net and oil cup, can play certain purification effect to getting into the oil smoke in collection smoke chamber 3 and the host computer 2 especially the cigarette machine fan 22, avoid the interior deposit of cigarette machine fan 22, thereby influence the wind wheel rotational speed influence effect of induced drafting on the cigarette machine fan 22, avoid the oil smoke to deposit and the inconvenient problem of cleaning in collection smoke chamber 3 simultaneously.

Further preferably, as shown in fig. 5, the range hood provided by the present invention may further include: the human body induction sensor 10, the illumination lamp 20, the speaker 30 and the microphone 40. When the human body induction sensor 10 collects a human body induction signal, it sends a high level to the illuminating lamp 20 to turn on the illuminating lamp 20, and when the human body induction signal disappears for a predetermined time, the human body induction sensor 10 sends a low level to the illuminating lamp 20 to turn off the illuminating lamp 20; loudspeaker 30 is used for broadcasting speech signal to the user, and microphone 40 is used for receiving user's speech signal, and loudspeaker 30 and microphone 40 are used for carrying out human-computer interaction with the user to realize the intelligent voice control function of lampblack absorber. In this embodiment, through setting up human induction sensor 10, can realize the auto-induction formula switch of lampblack absorber light 20, can realize the artificial intelligence control between user and the lampblack absorber through loudspeaker 30 and microphone 40, the intelligent degree of lampblack absorber is high. Specific artificial intelligence control software can be written in advance according to the required control logic and stored in a control box of the range hood, and the description is omitted here.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice in the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A lampblack absorber air curtain system, its characterized in that includes: the air curtain device comprises a panel, an air inlet device, an air curtain fan assembly, a flow guide device and an air curtain nozzle;

the panel is a flat plate with the external dimension matched with a matched range hood; the air inlet device, the air curtain fan assembly, the flow guide device and the air curtain nozzle are all arranged on the panel;

the guiding device guides the air output by the air curtain fan assembly to the air curtain nozzle to be sprayed out so as to form an air curtain.

2. The range hood air curtain system of claim 1, wherein the air curtain fan assembly further comprises: an air inlet interface of the air curtain fan and an air outlet interface of the air curtain fan;

3. The range hood air curtain system of claim 2, wherein the flow guide device comprises a box body, a second interface is formed at the upper end of the box body, and the second interface is in butt joint with the first interface; the lower end of the box body is provided with a third interface, and the third interface is in butt joint with the input end of the air curtain nozzle; the effective air outlet area of the third interface is larger than the effective air inlet area of the second interface.

4. The range hood air curtain system of claim 3, wherein the air curtain nozzle comprises a housing and a plurality of ribs;

5. A range hood air curtain system as set forth in claim 1, wherein the air curtain plane outputted from the air curtain nozzle forms an included angle of a preset range with the panel, and the preset range is 20 ° to 25 °.

6. A range hood, comprising: the smoke collection system comprises a host, a smoke collection cavity and an air curtain system;

the air curtain system is any one of the range hood air curtain systems of claims 1-5, the upper portion of the panel is installed on the smoke collection cavity, and one side of the air curtain fan, which is installed on the panel, faces the smoke collection cavity.

7. A hood according to claim 6, characterized in that the upper part of said panel is connected to said smoke collection chamber by a first rotation shaft;

8. A range hood as claimed in claim 7, characterized in that the maximum angle of rotation of the panel open about the first axis of rotation is 53 °.

9. The range hood of claim 6, further comprising: the left baffle and the right baffle are respectively positioned at the left side and the right side of the smoke collection cavity;

10. A range hood according to any of claims 6-9, characterized in that the range hood further comprises: a human body induction sensor, a lighting lamp, a loudspeaker and a microphone;