CN214172339U - Smoke inlet opening and closing mechanism and range hood - Google Patents

Abstract

The utility model discloses a smoke inlet opening and closing mechanism and a range hood with the same, wherein the smoke inlet opening and closing mechanism comprises a side smoke inlet cabinet and a power transmission mechanism, the side smoke inlet cabinet is provided with an inner cavity and a smoke inlet communicated with the inner cavity, and a cover plate assembly is arranged on the smoke inlet; the cover plate assembly is hinged with the side smoke inlet cabinet, a hinge shaft at the hinged position is called a first hinge shaft, and the first hinge shaft is arranged on the upper side of the smoke inlet; the power transmission mechanism comprises at least one power transmission unit, the power transmission unit comprises a transmission rod and a vertically arranged linear driver, the linear driver is arranged in the side smoke cabinet and is provided with a driver main body and a driving rod, and two ends of the transmission rod are respectively hinged with the driving rod and the cover plate assembly. Through setting up first hinge in the upside of advancing the mouth, the apron subassembly can be followed supreme side upset toward the side of advancing the cigarette cabinet and opened, and the apron subassembly after opening extends, has the effect of drawing in the oil smoke in the place ahead from the top of advancing the mouth, makes the effect that advances the mouth and absorb the oil smoke better.

Description

Smoke inlet opening and closing mechanism and range hood

Technical Field

The utility model relates to a range hood technical field, in particular to advance mouth mechanism and range hood that opens and shuts.

Background

The range hood of traditional model mainly hangs and establishes directly over the kitchen range, but its occupation space is not too reasonable, in the use, causes the interference of head easily to the cook, hits the head easily.

Therefore, an L-shaped range hood has been gradually derived later, which generally comprises a top fume inlet cabinet and a side fume inlet cabinet, wherein the side fume inlet cabinet is arranged at the rear side of the bottom of the top fume inlet cabinet, the top fume inlet cabinet is provided with a top fume inlet, the side fume inlet cabinet is provided with a side fume inlet, the side fume inlet is arranged at the front side of the side fume inlet cabinet, the top fume inlet cabinet is arranged at a higher position, the interference of the head of a cook can not be caused, but only a small part of fume can be sucked, so that the function of sucking the fume is mainly completed by the side fume inlet, for example, the range hood disclosed by the chinese patent "L-shaped range hood with the bottom air inlet capable of being opened and closed and the structure of being manually operated buckle structure" (publication No. CN206247441U), the side fume inlet is also provided with an opening and closing mechanism, so that the side fume inlet is opened when the range hood is used, and the side fume inlet is closed when the range hood is not used. However, the side smoke inlet of the range hood has poor smoke collecting effect, and a large amount of oil smoke floats upwards when the range hood is used, so the prior art still has defects.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a mechanism and range hood open and shut of advance mouth of cigarette.

The smoke inlet opening and closing mechanism comprises a side smoke inlet cabinet and a power transmission mechanism, wherein the side smoke inlet cabinet is provided with an inner cavity and a smoke inlet communicated with the inner cavity, and a cover plate assembly is arranged on the smoke inlet; the cover plate assembly is hinged with the side smoke inlet cabinet, a hinge shaft at the hinged position is called a first hinge shaft, the first hinge shaft is arranged on the upper side of the smoke inlet, and the first hinge shaft is transversely arranged; the power transmission mechanism comprises at least one power transmission unit, the power transmission unit comprises a transmission rod and a vertically arranged linear driver, the linear driver is provided with a driver main body and a driving rod, the driver main body is connected with the side-feeding cigarette cabinet, two ends of the transmission rod are respectively hinged with the driving rod and the cover plate assembly, so that when the driving rod moves vertically, the cover plate assembly can turn over to the outer side of the side-feeding cigarette cabinet.

According to the utility model discloses advance the mechanism that opens and shuts of cigarette mouth of first aspect embodiment has following technological effect at least: the first hinge shaft is arranged on the upper side of the smoke inlet, the cover plate assembly can be turned and opened from bottom to top to the outer side of the side smoke inlet cabinet, and the opened cover plate assembly extends from the top of the smoke inlet to the front and has the function of collecting oil smoke, so that the effect of absorbing the oil smoke by the smoke inlet is better; the linear driver is vertical, and the front and back size of linear driver is less, and the front and back size that sets up the required space of power transmission mechanism is less for the side smoke box can make into the cuboid form that the front and back size is less, and is less to occuping of culinary art space, is applicable to L type range hood.

In some embodiments of the present invention, an upper edge of the smoke inlet is referred to as a first edge, and the first hinge shaft is disposed inside the side-feeding smoke box; the cover plate assembly is provided with a cover plate main body and a connecting piece, one end of the connecting piece is hinged with the side smoke feeding cabinet through the first hinge shaft, the other end of the connecting piece is connected with the cover plate main body, and the joint of the other end of the connecting piece and the cover plate main body is called a first joint; the connecting piece is provided with a first notch, the first notch is located between the first hinge shaft and the first joint, and the first edge is arranged at the first notch. Through the arrangement of the connecting piece, the cover plate main body is conveniently hinged and installed on the side smoke inlet cabinet; the outer surface of the side-inlet cigarette cabinet can be kept flat when the cover plate main body is closed, and the side-inlet cigarette cabinet is convenient to clean and clean while being convenient for packaging and transporting.

According to some embodiments of the invention, the one end of the transmission rod is articulated with the drive rod, the other end of the transmission rod is articulated with the connecting piece. The structure is simple and compact, the first hinge point and the second hinge point are arranged on the same component, the number of parts of the cigarette inlet opening and closing mechanism is reduced, and the production is convenient.

According to some embodiments of the present invention, the power transmission unit, the first hinge shaft and the connecting member are called a motion unit, and the motion unit includes two motion units, two motion units are respectively disposed on the left side and the right side of the cover plate main body. The two first hinge shafts only need to bear shear stress and do not need to bear bending moment, and the structure is more stable and not easy to damage.

According to some embodiments of the present invention, the connecting member has a first section, a second section and a third section, the second section is disposed between the first section and the third section, the third section is connected to the top of the cover plate main body, and the first hinge shaft is disposed on the first section; the vertical connection line between any point on the second segment and the first hinge shaft is called a second segment, the vertical connection line between any point on the third segment and the first hinge shaft is called a third segment, the vertical connection line between the first hinge shaft and the first edge is called a fourth segment, the length of the second segment is equal to that of the fourth segment, the length of the third segment is greater than that of the fourth segment, and the included angle between the second segment and the fourth segment is not less than ninety degrees. When the oil smoke exhausting device is used, the cover plate main body can be overturned to the horizontal position and even continuously overturned upwards, the overturning angle of the cover plate main body is large enough, the smoke inlet can be fully opened, and the effect of sucking oil smoke from the smoke inlet is good.

According to the utility model discloses a some embodiments, be equipped with on the connecting piece and bump the touch multitouch, the below of first hinge is equipped with the stopper, the stopper fixed set up in the inboard of side cigarette cupboard, bump the touch multitouch with the perpendicular line of first hinge is called the fifth line segment, the stopper with the perpendicular line of first hinge is called the sixth line segment, the length of fifth line segment with the length of sixth line segment equals, the fifth line segment with the contained angle of sixth line segment equals ninety degrees. When the cigarette collecting cover is used, the cover body is opened and is perpendicular to the front wall plate, the cover body is far away from the distance extending from the front wall plate in a forward turning mode, and the cigarette collecting effect is good.

According to some embodiments of the invention, the touch block is provided on the first section. The motion range of the touch block is small, the touch block cannot hinder the operation of other components, and the structure is compact and reasonable.

According to some embodiments of the invention, the linear actuator is an electric push rod. The electric push rod has the advantages of low cost, easy acquisition and convenient installation.

According to the utility model discloses range hood of second aspect embodiment, including lampblack absorber main part and foretell inlet flue opening and shutting mechanism, side smoke cabinet locates the bottom rear side of lampblack absorber main part, the lampblack absorber main part has the collection smoke chamber, the collection smoke chamber with be equipped with first passageway between the inner chamber, the inner chamber with the collection smoke chamber passes through first passageway intercommunication.

According to the utility model discloses advance the mechanism that opens and shuts of cigarette mouth of second aspect embodiment has following technological effect at least: through adopting the mechanism that opens and shuts of inlet flue, its apron main part has certain cigarette effect of holding together, and the effect that the inlet flue absorbed the oil smoke is better.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view of a range hood according to an embodiment of the second aspect of the present invention;

fig. 2 is a right side view of the structure of the smoke inlet opening and closing mechanism according to the embodiment of the first aspect of the present invention;

FIG. 3 is a right side elevational view of the side cabinet of FIG. 1;

FIG. 4 is a front view of the side-feeding smoke cabinet of FIG. 1;

FIG. 5 is an enlarged partial schematic view of region B in FIG. 3;

FIG. 6 is a schematic view of the connector of FIG. 2;

fig. 7 is a structural diagram of the touch block of fig. 2.

In the drawings:

100-a range hood main body; 110-a mounting surface; 200-side smoke-feeding cabinet; 210-a free bearing; 212-a stop block; 220-a connector; 221-first stage; 222-a second segment; 223-third section; 224-a touch block; 225-a first notch; 230-a first hinge axis; 240-lumen; 241-a smoke inlet; 242-a first edge; 243-first contact; 251-a driver body; 252-a drive rod; 260-a cover plate body; 270-a transmission rod; 272-a second hinge point; 273-third hinge point; 280-a front wall panel; 302-a second line segment; 303-third line segment; 304-fourth line segment; 305-a fifth line segment; 306-a sixth line segment; 310-first circle.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "a" or "an" mean one or more, the terms "a" or "an" mean two or more, the terms larger than, smaller than, exceeding, and the like are understood to include the number, and the terms "larger than, smaller than, within, and the like are understood to include the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

The following describes a smoke inlet opening and closing mechanism and a range hood according to an embodiment of the present invention with reference to fig. 1 to 7.

According to the utility model discloses smoke inlet opening and closing mechanism of first aspect embodiment, including side cigarette cabinet 200 and power transmission mechanism, side cigarette cabinet 200 has inner chamber 240 and the smoke inlet 241 who communicates with inner chamber 240, and smoke inlet 241 locates on the chamber wall of inner chamber 240, and with the position of smoke inlet 241 relative to inner chamber 240 as the front, smoke inlet 241 runs through the preceding chamber wall of inner chamber 240 around, is equipped with the apron subassembly on smoke inlet 241; the cover plate assembly is hinged with the side-feeding cigarette case 200, a hinge shaft at the hinged position is called as a first hinge shaft 230, the first hinge shaft 230 is installed on the side-feeding cigarette case 200 through a hinge seat 210, the first hinge shaft 230 is arranged on the upper side of the cigarette inlet 241, and the first hinge shaft 230 is transversely arranged; the power transmission mechanism comprises at least one power transmission unit, the power transmission unit comprises a transmission rod 270 and a vertically arranged linear driver, the linear driver is arranged in the side-feeding cigarette cabinet 200 and is provided with a driver main body 251 and a driving rod 252, the driving direction of the driving rod 252 is vertical, the driver main body 251 is fixedly connected with the side-feeding cigarette cabinet 200, two ends of the transmission rod 270 are respectively hinged with the driving rod 252 and the cover plate assembly, the hinged part of the transmission rod 270 and the driving rod 252 is called a third hinge point 273, and the hinged part of the transmission rod 270 and the cover plate assembly is called a second hinge point 272; the driving rod 252 can drive the driving rod 270 to move, and the driving rod 270 can drive the connecting piece 220 to move so as to drive the cover plate assembly, so that when the driving rod 252 vertically moves, the cover plate assembly can turn over towards the outer side of the side smoke box 200; the second hinge point 272 and the third hinge point 273 are both provided at the rear of the first hinge shaft 230, and the driving lever 270 is vertically oriented.

For example, as shown in fig. 1, the present invention can be disposed on an L-shaped range hood, the rear side of the L-shaped range hood is a mounting surface 110 installed on a wall surface, the rear end of the side-feeding smoke cabinet 200 is close to the mounting surface 110 of the L-shaped range hood, and the smoke inlet 241 located at the front side of the side-feeding smoke cabinet 200 faces the cooking bench and can suck the cooking fumes generated. The transmission rod 270 may be disposed on the upper side of the second hinge point 272, and the linear actuator may be disposed on the upper side of the transmission rod 270, or the transmission rod 270 may be disposed on the lower side of the second hinge point 272, and the linear actuator may be disposed on the lower side of the transmission rod 270, so that the connection line between the second hinge point 272 and the third hinge point 273 is kept substantially vertical, and further, when the driving rod 252 of the linear actuator moves up and down, the transmission rod 270 can move up and down instead of swinging around the second hinge point 272; the transmission rod 270 may be a straight rod or a curved rod, and a connection line between the second hinge point 272 and the third hinge point 273 is substantially vertical; the second hinge point 272 and the third hinge point 273 are both arranged at the rear of the first hinge shaft 230, so that a large gap does not need to flow out between the first hinge shaft 230 and the front cavity wall of the inner cavity 240, the structure of the side-feeding cigarette cabinet 200 is more compact, and when the driving rod 252 moves up and down, the driving rod 270 also moves up and down along with the first hinge shaft 230, so that the second hinge point 272 rotates around the first hinge shaft 230, and the cover plate assembly is turned over; the hinge mount 210 may be disposed inside and outside the side-feeding smoke box 200 or between the cover plate assembly and the upper edge of the smoke inlet 241, and the cover plate assembly may be turned over from bottom to top to the outside of the side-feeding smoke box 200.

By arranging the first hinge shaft 230 on the upper side of the smoke inlet 241, the cover plate assembly can be turned over and opened from bottom to top to the outer side of the side smoke cabinet 200, and the opened cover plate assembly extends from the top of the smoke inlet 241 to the front and has the function of collecting oil smoke, so that the effect of absorbing the oil smoke by the smoke inlet 241 is better; the linear driver is vertically arranged, the front and back sizes of the linear driver are smaller, and the front and back sizes of the space required by the power transmission mechanism are smaller, so that the side smoke cabinet 200 can be manufactured into a cuboid shape with a smaller front and back size, occupies a smaller cooking space, and is suitable for an L-shaped range hood.

In some embodiments of the present invention, the upper edge of the smoke inlet 241 is referred to as a first edge 242, and the first hinge shaft 230 is disposed inside the side-feeding cigarette cabinet 200; the cover plate assembly is provided with a cover plate main body 260 and a connecting piece 220, one end of the connecting piece 220 is hinged with the side-feeding cigarette cabinet 200 through a first hinge shaft 230, the hinged position is called a first hinge point, and the other end of the connecting piece 220 is connected with the cover plate main body 260, and the connected position is called a first joint 243; the connector 220 is provided with a first notch 225, the first notch 225 is located between the first hinge shaft 230 and the first joint 243, and the first edge 242 is located at the first notch 225. As shown in fig. 2 to 4, the hinge base 210 is disposed at the inner side of the side-feeding cigarette cabinet 200, the connecting element 220 may be in a hook shape, a hook opening of the hook is the first notch 225, when the cover plate main body 260 is turned over by the arrangement of the first notch 225, the connecting element 220 and the cover plate main body 260 do not touch the first edge 242, the cover plate main body 260 can be smoothly turned over outwards, and the outer surface of the side-feeding cigarette cabinet 200 can be kept flat when the cover plate main body 260 is closed, so that the side-feeding cigarette cabinet 200 is convenient to be cleaned and transported; in order to facilitate cleaning, the cover plate main body 260 can be made of glass, and is difficult to be directly hinged to the side smoke box 200 at the moment, and the connecting piece 220 is arranged, so that the connecting piece 220 can be bonded to the cover plate main body 260, and the cover plate main body 260 is conveniently hinged to the side smoke box 200.

In some embodiments of the present invention, one end of the transmission rod 270 is hinged to the driving rod 252, and the other end of the transmission rod 270 is hinged to the connecting member 220, where the hinge is referred to as a second hinge point 272. The structure is simple and compact, the first hinge point and the second hinge point 272 are arranged on the same component, the number of parts of the cigarette inlet opening and closing mechanism is reduced, and the production is convenient; of course, a connecting seat is fixedly disposed on the cover plate main body 260, and the other end of the transmission rod 270 may be hinged to the connecting seat instead of the connecting member 220.

In order to make the opening and closing of the cover plate main body 260 smoother and the operation of the power transmission mechanism more stable, in some embodiments of the present invention, one power transmission unit, one first hinge shaft 230 and one connecting member 220 are called as two motion units, and the two motion units are respectively disposed on the left side and the right side of the cover plate main body 260. The two first hinge shafts 230 only need to bear shearing stress and do not need to bear bending moment, so that the structure is more stable and is not easy to damage.

In some embodiments of the present invention, the first edge 242 is transversely disposed, the connecting member 220 has a first section 221, a second section 222 and a third section 223, the second section 222 is disposed between the first section 221 and the third section 223, the third section 223 is fixedly connected to the top of the cover plate main body 260, and the first hinge shaft 230 is disposed on the first section 221; a vertical connection line between any point on the second segment 222 and the first hinge shaft 230 is referred to as a second segment 302, a vertical connection line between any point on the third segment 223 and the first hinge shaft 230 is referred to as a third segment 303, a vertical connection line between the first hinge shaft 230 and the first edge 242 is referred to as a fourth segment 304, the length of the second segment 302 is equal to that of the fourth segment 304, the length of the third segment 303 is greater than that of the fourth segment 304, and an included angle between the second segment 302 and the fourth segment 304 is not less than ninety degrees. As shown in fig. 6, a first circle 310 is drawn by taking the first hinge point as a center and the fourth line 304 as a radius, the portion of the connecting element 220 located inside the first circle 310 is a first segment 221, the portion of the connecting element 220 overlapping the first circle 310 is a second segment 222, the portion of the connecting element 220 located outside the first circle 310 is a third segment 223, and the third segment 223 does not touch the first edge 242 in the process of the connecting element 220 rotating around the first hinge point; through setting up the contained angle of second line segment 302 and fourth line segment 304 not less than ninety degrees, connecting piece 220 rotates around first hinge point and just can touch with first edge 242 after exceeding ninety degrees, and apron main part 260 can overturn to the level during the use and continue upwards upset even, and the angle of apron main part 260 upset is enough big, can fully open into smoke inlet 241, and smoke inlet 241 absorbs the effect of oil smoke better.

In some embodiments of the present invention, the connecting member 220 is provided with a touch block 224, the lower portion of the first hinge shaft 230 is provided with a limit block 212, the limit block 212 is fixedly disposed at the inner side of the side-feeding cigarette case 200, a vertical connection line between the touch block 224 and the first hinge shaft 230 is referred to as a fifth line segment 305, a vertical connection line between the limit block 212 and the first hinge shaft 230 is referred to as a sixth line segment 306, the length of the fifth line segment 305 is equal to the length of the sixth line segment 306, and an included angle between the fifth line segment 305 and the sixth line segment 306 is equal to ninety degrees. As shown in fig. 4 and 7, the side-feeding cigarette cabinet 200 has a front wall plate 280, a rectangular cigarette inlet 241 is opened on the front wall plate 280, a hinge base 210 can be welded on the back of the front wall plate 280, a limit block 212 can be fixed on the back of the front wall plate 280, the limit block 212 is also arranged on the hinge base 210, and the limit block 212 can be the front wall plate 280 itself or the hinge base 210 itself and can abut against the touch block 224; the included angle between the fifth line segment 305 and the sixth line segment 306 is equal to ninety degrees, so that when the connecting member 220 rotates ninety degrees around the first hinge point, the touch block 224 touches the limit block 212 to limit the maximum turning stroke of the cover plate main body 260, so that the cover plate main body 260 is perpendicular to the front wall plate 280, and at this time, the cover plate main body 260 is turned forward from the front wall plate 280 for a longer distance, so that the cigarette gathering effect is better.

In some embodiments of the present invention, the bump block 224 is disposed on the first section 221. The first section 221 is closer to the first hinge point, and the touch block 224 is arranged on the first section 221, so that the motion range of the touch block 224 is smaller, the touch block 224 cannot hinder the operation of other components, and the structure is compact and reasonable; the bump block 224 and the connector 220 may be formed as an integral component by casting.

In some embodiments of the present invention, the linear actuator is an electric push rod. The electric push rod has lower cost, is easy to obtain and is convenient to install; of course, the linear actuator may be a linear motor, an air cylinder, or other suitable device.

According to the utility model discloses range hood of second aspect embodiment, including lampblack absorber main part 100 and foretell inlet flue opening and shutting mechanism, the bottom rear side of lampblack absorber main part 100 is located to side smoke cabinet 200, and lampblack absorber main part 100 has the collection smoke chamber, is equipped with first passageway between collection smoke chamber and the inner chamber 240, and inner chamber 240 communicates through first passageway with collection smoke chamber.

As shown in fig. 1, the range hood body 100 may be rectangular, the rear side surface of the range hood body 100 is an installation surface 110 installed on a wall surface, the side-entry smoke box 200 is rectangular with a smaller front-rear size, the rear end of the side-entry smoke box 200 is close to the installation surface 110 of the range hood body 100, and the smoke inlet 241 located at the front side of the side-entry smoke box 200 faces the cooking bench and can suck the cooking fumes; by adopting the opening and closing mechanism of the smoke inlet, the cover plate main body 260 has certain smoke gathering effect, and the smoke inlet 241 has better effect of absorbing oil smoke.

The above description is for the purpose of illustrating the preferred embodiments of the present invention, but the present invention is not limited to the illustrated embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are included in the scope of the present invention defined by the appended claims.

Claims (9)

1. The utility model provides a mechanism that opens and shuts at advances cigarette mouth which characterized in that includes:

the side-feeding cigarette cabinet (200) is provided with an inner cavity (240) and a cigarette inlet (241) communicated with the inner cavity (240), and a cover plate assembly is arranged on the cigarette inlet (241); the cover plate assembly is hinged with the side smoke inlet cabinet (200), a hinge shaft at the hinged position is called as a first hinge shaft (230), the first hinge shaft (230) is arranged on the upper side of the smoke inlet (241), and the first hinge shaft (230) is transversely arranged;

the power transmission mechanism comprises at least one power transmission unit, the power transmission unit comprises a transmission rod (270) and a vertically arranged linear driver, the linear driver is provided with a driver main body (251) and a driving rod (252), the driver main body (251) is connected with the side smoke inlet cabinet (200), two ends of the transmission rod (270) are respectively hinged to the driving rod (252) and the cover plate assembly, so that when the driving rod (252) vertically moves, the cover plate assembly can be turned to the outer side of the side smoke inlet cabinet (200).

2. The smoke inlet opening and closing mechanism according to claim 1, wherein: the upper edge of the smoke inlet (241) is called as a first edge (242), and the first hinge shaft (230) is arranged on the inner side of the side smoke box (200); the cover plate assembly is provided with a cover plate main body (260) and a connecting piece (220), one end of the connecting piece (220) is hinged with the side-feeding cigarette case (200) through the first hinge shaft (230), and the other end of the connecting piece (220) is connected with the cover plate main body (260) at a position which is called a first joint (243); the connecting piece (220) is provided with a first notch (225), the first notch (225) is positioned between the first hinge shaft (230) and the first joint (243), and the first edge (242) is arranged at the first notch (225).

3. The smoke inlet opening and closing mechanism according to claim 2, wherein: one end of the transmission rod (270) is hinged with the driving rod (252), and the other end of the transmission rod (270) is hinged with the connecting piece (220).

4. The smoke inlet opening and closing mechanism according to claim 3, wherein: the power transmission unit, the first hinge shaft (230) and the connecting piece (220) are called as two moving units, and the two moving units are respectively arranged on the left side and the right side of the cover plate main body (260).

5. The smoke inlet opening and closing mechanism according to claim 3, wherein: the connecting piece (220) is provided with a first section (221), a second section (222) and a third section (223), the second section (222) is arranged between the first section (221) and the third section (223), the third section (223) is connected with the top of the cover plate main body (260), and the first hinge shaft (230) is arranged on the first section (221); a vertical connection line between any point on the second segment (222) and the first hinge shaft (230) is called a second segment (302), a vertical connection line between any point on the third segment (223) and the first hinge shaft (230) is called a third segment (303), a vertical connection line between the first hinge shaft (230) and the first edge (242) is called a fourth segment (304), the length of the second segment (302) is equal to that of the fourth segment (304), the length of the third segment (303) is greater than that of the fourth segment (304), and an included angle between the second segment (302) and the fourth segment (304) is not less than ninety degrees.

6. The smoke inlet opening and closing mechanism according to claim 5, wherein: be equipped with on connecting piece (220) and bump touch-sensitive material (224), the below of first hinge (230) is equipped with stopper (212), stopper (212) fixed set up in the inboard of side cigarette case (200), bump touch-sensitive material (224) with the perpendicular line of first hinge (230) is called fifth line segment (305), stopper (212) with the perpendicular line of first hinge (230) is called sixth line segment (306), the length of fifth line segment (305) with the length of sixth line segment (306) equals, fifth line segment (305) with the contained angle of sixth line segment (306) equals ninety degrees.

7. The cigarette inlet opening and closing mechanism according to claim 6, characterized in that: the contact block (224) is arranged on the first section (221).

8. The smoke inlet opening and closing mechanism according to claim 1, wherein: the linear driver is an electric push rod.

9. A range hood, its characterized in that: including lampblack absorber main part (100) and according to any one of claims 1 to 8 smoke inlet opening and closing mechanism, side fume chamber (200) are located the bottom rear side of lampblack absorber main part (100), lampblack absorber main part (100) have the collection smoke chamber, collection smoke chamber with be equipped with first passageway between inner chamber (240), inner chamber (240) with the collection smoke chamber passes through first passageway intercommunication.

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