CN220119441U - Bellows subassembly and have its range hood - Google Patents

Abstract

The utility model discloses a bellows assembly and a range hood with the bellows assembly, wherein the bellows assembly comprises a bellows frame main body, a panel connected with the front side of the bellows frame main body and a box body rear plate connected with the rear side of the bellows frame main body, a long air suction port is horizontally arranged on the panel, the bellows frame main body comprises a top plate, a left side plate and a right side plate which are integrally connected with the top plate, the left side plate and the right side plate are respectively and hermetically connected with the top plate, and the panel, the left side plate, the right side plate and the box body rear plate jointly enclose an air flue communicated with the long air suction port to a smoke outlet on the top plate; compared with the prior art, the air box assembly is not provided with the air box, the structure of the air box assembly is simplified, the long air suction openings on the panel are directly communicated with the air channel, the structure of the long air suction openings is simplified, and the air inlet effect is better.

Description

Bellows subassembly and have its range hood

Technical Field

The utility model relates to the technical field of range hoods, in particular to an air box assembly and a range hood with the same.

Background

The prior range hood comprises a shell and a wind collecting box arranged in the shell, wherein the wind collecting box is arranged in the shell, a smoke exhaust fan of the range hood is arranged in the wind collecting box, a panel is arranged on the front side of the shell, an air inlet is arranged on the panel, a wind box air inlet communicated with the panel air inlet is arranged on the wind collecting box, when the range hood works, the smoke exhaust fan is started, negative pressure is formed in the wind collecting box, and external air enters the wind collecting box through the air inlet on the panel and is then exhausted by the smoke exhaust fan of the range hood. When the panel is connected with the air collecting box, the air inlet on the panel is required to be completely aligned with the air inlet of the air box on the air collecting box, and the air inlet on the panel and the air inlet of the air box on the air collecting box can not leak air through the connection of the sealing piece.

Disclosure of Invention

The utility model aims to provide an air box assembly and a range hood with the same, which are used for solving the technical problems.

A bellows subassembly for range hood, includes bellows frame body, the panel that bellows frame body front side is connected and the box back plate that bellows frame body rear side is connected, and the level is provided with long inlet scoop on the panel, and bellows frame body includes roof and the left side board and the right side board that link to each other with the roof an organic whole, left side board and right side board respectively with roof sealing connection, panel, left side board, right side board and box back plate enclose jointly into the wind channel of intercommunication from long inlet scoop to the exhaust port on the roof.

According to one embodiment of the utility model, an exhaust box connecting part is arranged at the exhaust port on the top plate, the exhaust box connecting part is used for connecting a corresponding connecting structure of the exhaust box, an electric control cavity is arranged between the top plate and the front side of the panel, an air curtain fan assembly is arranged in the electric control cavity, an air inlet hole is formed in the top plate, and the exhaust port of the air curtain fan assembly faces to the panel exhaust port at the corresponding position on the panel.

According to one embodiment of the utility model, the left side plate and the right side plate are in sealing connection with the top plate through the circular arc section, the smoke exhaust fan forms a negative pressure area at the smoke exhaust port of the top plate, and the top plate, the panel, the left side plate, the right side plate and the rear plate of the box body enclose a pressure equalizing area which is horizontally arranged at two sides of the negative pressure area, and the pressure equalizing area is connected with the negative pressure area.

According to one embodiment of the utility model, the panel has a first panel section and a second panel section, the first panel section is inclined relative to the horizontal plane at an angle of 0.1 to 10 degrees to the horizontal plane, the second panel section is inclined relative to the vertical plane at an angle of 1 to 25 degrees to the vertical plane; the first panel section and the second panel section are connected through a bending section; the long air suction inlet is positioned at the middle upper part of the second panel section.

According to one embodiment of the utility model, the included angle between the second panel section and the vertical surface is 3-15 degrees, the lower part of the second panel section is provided with a horizontal bending part, the second panel section, the left side plate, the right side plate and the rear plate of the box body form an air duct cavity with one inclined side and the other vertical side, the part of the air duct above the long air suction inlet is a ventilation area, and a pressure maintaining area is arranged between the long air suction inlet and the horizontal bending part.

According to one embodiment of the utility model, the included angle between the second panel section and the vertical surface is 5-9 degrees, the horizontal bending part is provided with an oil leakage hole for connecting the air duct with the outside, and the horizontal bending part is respectively and hermetically connected with the rear plate of the box body, the lower end of the left side plate and the lower end of the right side plate.

According to one embodiment of the utility model, the inner sides of the rear vertical mounting surfaces of the left side plate and the right side plate are provided with connecting rods which are respectively fixedly connected with the corresponding positions of the left side plate and the right side plate.

The range hood comprises the bellows assembly, a display panel, wherein the panel is in sealing connection with the lower side of the display panel, at least one panel air outlet is horizontally arranged at the position, close to the display panel, of the panel, and air exhausted from the panel air outlet enters the long air suction opening.

According to one embodiment of the utility model, the inner wall surface of the panel is provided with a vertical support plate along the left-right direction, and/or the inner side surface of the top plate is provided with a shielding plate along the left-right direction, and the vertical support plate is connected with the shielding plate.

According to one embodiment of the utility model, the air curtain device further comprises an air curtain base, an air curtain air outlet is formed on the air curtain base, the air curtain air outlet is divided into a plurality of long and thin strip-shaped air inlets, the long and thin strip-shaped air inlets are arranged in 2-3 rows, the air curtain fan assembly comprises a cross flow wind wheel, a motor for driving the cross flow wind wheel, and a volute forming vertical air guide on the air outlet side, and the air guide end of the volute is close to one side of the air curtain air outlet.

Compared with the prior art, the bellows assembly of the utility model has the following advantages:

the bellows assembly of the utility model does not have a separate air collecting box, simplifies the structure of the bellows assembly, and the long air suction inlet on the panel is directly communicated with the air duct, so that the structure of the long air suction inlet is simplified, and the air inlet effect is better.

Drawings

FIG. 1 is an exploded view of a range hood having a bellows assembly of the present utility model;

fig. 2 is a front view of a range hood having a bellows assembly of the present utility model;

FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 2;

FIG. 4 is an enlarged view of a portion of B in FIG. 3;

FIG. 5 is a schematic illustration of the air curtain blower assembly and air curtain base of FIG. 1;

in the figure: 1. the main body of the bellows frame 11, top plate 111, exhaust port 112, exhaust box connection 113, air inlet opening 114, shielding plate 12, left side plate 13, right side plate 14, connecting rod 2, panel 2, first panel section 2b, second panel section 2c, bent section 2d, horizontal bent section 21, long air inlet 22, panel exhaust opening 23, vertical support plate 3, box rear plate 4, exhaust box 5, air curtain fan assembly 51, cross flow fan 52, motor 53, volute 531, induced air end 532, clamping end 54, end side plate 55, tail side plate 56, volute tongue 6, display panel 7, air curtain base 71, elongated strip air inlet 72, clamping groove 73

The implementation and advantages of the functions of the present utility model will be further described with reference to the accompanying drawings.

Detailed Description

Various embodiments of the utility model are disclosed in the following drawings, in which details of the practice are set forth in the following description for the purpose of clarity. However, it should be understood that these practical details are not to be taken as limiting the utility model. That is, in some embodiments of the utility model, these practical details are unnecessary. Moreover, for the purpose of simplifying the drawings, some conventional structures and components are shown in the drawings in a simplified schematic manner.

It should be noted that all directional indicators (such as up, down, left and right, front and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions of the "first," "second," and the like, herein are for descriptive purposes only and are not intended to be specifically construed as order or sequence, nor are they intended to limit the utility model solely for distinguishing between components or operations described in the same technical term, but are not to be construed as indicating or implying any relative importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

For a further understanding of the nature, features, and efficacy of the present utility model, the following examples are set forth in order to provide a further understanding of the utility model, and are intended to be described in connection with the accompanying drawings:

referring to fig. 1 to 3, the present utility model discloses a bellows assembly for a range hood, which comprises a bellows frame body 1, a panel 2 connected to the front side of the bellows frame body 1, and a box back plate 3 connected to the back side of the bellows frame body 1, wherein a long air intake 21 is horizontally provided on the panel 2, the bellows frame body 1 comprises a top plate 11, and a left side plate 12 and a right side plate 13 integrally connected to the top plate 11, the left side plate 12 and the right side plate 13 are respectively and hermetically connected to the top plate 11, and the panel 2, the left side plate 12, the right side plate 13, and the box back plate 3 together enclose an air duct communicating the long air intake 21 to the air intake 111 on the top plate 11. In the bellows assembly of the present utility model, the panel 2 is assembled on the front side of the bellows frame body 1, and left and right sides of the panel are respectively connected with the left side plate 12 and the right side plate 13, the upper end of the panel 2 is connected with the lower edge of the front side of the top plate 11, then the box back plate 3 is connected to the rear side of the bellows frame body 1, and left and right sides of the box back plate 3 are respectively connected with the left side plate 12 and the right side plate 13, the upper end of the box back plate 3 is connected with the lower edge of the rear side of the top plate 11, the lower side of the box back plate 3 is connected with the lower end of the panel 2, and then the left side plate 12, the right side plate 13, the panel 2 and the box back plate 3 enclose a chamber which is used as an air duct when the bellows assembly is applied to a range hood, and communicates with the outside through the long air suction port 21 on the panel 2 and the exhaust port 111 on the top plate 11. When the bellows assembly is used on a range hood, a smoke exhaust fan of the range hood is started, the smoke exhaust fan extracts air in an air channel and forms negative pressure in the air channel, a long air suction opening 21 on a panel 2 is communicated with the air channel, negative pressure is formed at the long air suction opening 21, external air enters the air channel through the long air suction opening 21 on the panel 2 under the action of the negative pressure at the long air suction opening 21 on the panel 2, then flows towards a smoke exhaust opening 111 under the action of the smoke exhaust fan, and is discharged out of the air channel by the smoke exhaust fan. The bellows assembly of the utility model does not have a separate air collecting box, simplifies the structure of the bellows assembly, and the long air suction port 21 on the panel 2 is directly communicated with the air duct, so that the structure of the long air suction port 21 is simplified, and the air inlet effect is better.

Referring to fig. 1, in the bellows assembly of the present utility model, an exhaust box connection portion 112 is disposed at a smoke outlet 111 on a top plate 11, the exhaust box connection portion 112 is used for connecting a corresponding connection structure of an exhaust box 4, an electric control cavity is disposed between the top plate 11 and a front side of a panel 2, an air curtain fan assembly 5 is disposed in the electric control cavity, an air inlet 113 is disposed on the top plate 11, and an air outlet of the air curtain fan assembly 5 faces a panel air outlet 22 at a corresponding position on the panel 2. The exhaust box connecting portion 112 at the exhaust port 111 is a flange turned upwards along the exhaust port 111, a connecting hole is formed in the flange, a fixing hole corresponding to the connecting hole on the flange is formed in the lower end of the wall surface of the exhaust box 4, when the exhaust box 4 is connected with the top plate 11, the exhaust box 4 is arranged on the top plate 11, the lower end of the wall surface of the exhaust box 4 stretches into the exhaust port 111, the flange at the exhaust port 111 is attached to the lower end of the wall surface of the exhaust box 4, the connecting hole on the flange is aligned with the fixing hole on the lower end of the wall surface of the exhaust box 4, the exhaust box 4 can be fixed on the top plate 11 by sequentially penetrating the connecting hole and the fixing hole through screws, and an air channel is communicated with the exhaust box 4. The region that roof 11 and the preceding side wall of panel 2 become is automatically controlled chamber, is provided with air curtain fan assembly 5 in the automatically controlled intracavity, is equipped with the air inlet 113 with automatically controlled chamber intercommunication on the roof, be equipped with on the panel 2 with automatically controlled chamber intercommunication and with the panel air exit 22 that air curtain fan assembly 5 corresponds, when air curtain fan assembly 5 starts, air curtain fan assembly 5 forms the negative pressure in automatically controlled intracavity, the air of roof 11 top gets into automatically controlled chamber from air inlet 113, then is discharged and is formed the air curtain from panel air exit 22 under the effect of air curtain fan assembly 5. When the bellows assembly is applied to the range hood, the smoke exhaust fan is started when the range hood works, negative pressure is formed in the air duct by the smoke exhaust fan, polluted air enters the air cavity through the long air suction opening 21 on the panel 2, meanwhile, the smoke exhaust fan is started, air flow is exhausted by the smoke exhaust fan through the panel air outlet 22, an air curtain is formed, and the air curtain can prevent the polluted air from escaping outwards in the flowing process of the long air suction opening 21.

Referring to fig. 1 and 3, in the bellows assembly of the present utility model, the left side plate 12 and the right side plate 13 are hermetically connected to the top plate 11 through arc segments, the smoke exhaust fan forms a negative pressure region at the smoke exhaust port 111 of the top plate 11, and the top plate 11, the panel 2, the left side plate 12, the right side plate 13 and the back plate 3 of the box body enclose a pressure equalizing region horizontally arranged at two sides of the negative pressure region, and the pressure equalizing region is connected to the negative pressure region. The exhaust fan is arranged in the exhaust box 4, when the exhaust fan is started, the exhaust fan extracts air in the exhaust box 4 and discharges air outwards, a negative pressure area is formed in the exhaust box 4, and the air channel is communicated with the exhaust box 4 through the exhaust port 111, so that when the exhaust fan is started, the exhaust fan forms negative pressure at the exhaust port 111, external air flows into the air channel through the long air suction port 21 on the panel 2, enters the exhaust box 4 through the exhaust port 111, and is finally discharged out of the exhaust box 4 by the exhaust fan. In the process that the smoke exhaust fan sucks air in the smoke exhaust box 4 and discharges the air outwards, the air in the smoke exhaust box 4 flows towards the air inlet of the smoke exhaust fan in a concentrated mode, the negative pressure is larger at the position close to the air inlet of the smoke exhaust fan, and similarly, the air flow entering the air channel through the long air suction opening 21 on the panel 2 flows towards the smoke exhaust opening 111 in a concentrated mode, part of the air flow can diffuse into the air channel, and pressure equalizing areas are formed on two sides of the smoke exhaust opening 111, the pressure equalizing areas can protect the air box frame body 1, the fact that all areas in the air channel are negative pressure areas is avoided, and the top plate 11, the left side plate 12 and the right side plate 13 of the air box frame body 1 deform.

Referring to fig. 1 and 3, the bellows assembly of the present utility model, the panel 2 has a first panel section 2a and a second panel section 2b, the first panel section 2a is inclined with respect to the horizontal plane at an angle of 0.1 to 10 degrees, and the second panel section 2b is inclined with respect to the vertical plane at an angle of 1 to 25 degrees; the first panel section 2a and the second panel section 2b are connected by a folded section 2 c; the long suction opening 21 is located at the middle upper portion of the second panel section 2 b. The left side plate 12 and the right side plate 13 comprise a joining portion joined with the top plate and a side plate portion formed by the joining portion extending downward, the width of the side plate portion is smaller than the width of the joining portion, the distance from the side of the side plate portion facing the user side to the box back plate 3 is smaller than the distance from the side of the top plate 11 facing the user side to the box back plate 3, the shape of the panel 2 is matched with the left side plate 12 and the right side plate 13, when the panel 2 is connected with the bellows frame body 1, two sides of the panel 2 are respectively connected with the left side plate 12 and the right side plate 13, two sides of a first panel section 2a of the panel 2 are respectively connected with the side of the joining portion of the left side plate 12 and the right side plate 13 away from the side of the top plate 11, the side of the joining portion away from the top plate 11 and the side of the side plate portion facing the user side have an arc section with an arc section of the arc section 2c of the panel 2, and the bending section 2c of the panel 2 is connected. The angle between the first panel section 2a of the panel 2 and the horizontal plane is adapted to the angle between the edge of the engagement portion facing away from the top plate 11 and the horizontal plane, and the angle between the second panel section 2b of the panel 2 and the vertical plane is adapted to the edge of the side plate portion facing the user and the clip of the vertical plane. The included angle between the first panel section 2a and the horizontal plane is 0.1-10 degrees, the height of one end of the first panel section 2a, which is far away from the box back plate 3, is larger than the height of one end of the first panel section 2a, which is close to the box back plate 3, so that after the first panel section 2a gathers, the mixture of oil and water in the oil smoke flows along the first panel section 2a to the second panel section 2b, in addition, the electric control cavity is enclosed by the connection part of the first panel section 2a of the panel 2 and the left side plate 12 and the right side plate 13 and the top plate 11, the air curtain fan assembly 5 is arranged in the electric control cavity, and as the panel air outlet 22 is arranged at the front end of the first panel section 2a, the air curtain of the air curtain fan assembly 5, which is discharged through the panel air outlet 22, is perpendicular to the first panel section 2a and forms an included angle of 0.1-10 degrees relative to the vertical plane, and the distance from the part of the air curtain, which is close to the kitchen range, to the box back plate 3 is larger than the distance from the panel outlet 22 to the body back plate 3, so that the barrier effect to the escaping oil smoke is better. The included angle between the second panel section 2b and the vertical surface is 1-25 degrees, the distance from the upper end of the second panel section 2b to the box back plate 3 is greater than the distance from the lower end of the second panel section 2b to the box back plate 3, and thus the side plate parts of the box back plate 3, the left side plate 12 and the right side plate 13 and the second panel section 2b of the panel 2 enclose an air channel with a large top and a small bottom, when air enters the air channel through the long air inlet 21 on the panel 2, oil smoke enters the air discharging box 4 through the smoke outlet 111 on the top plate 11, and is discharged by the smoke discharging fan. The larger the included angle between the second panel section 2b and the vertical surface is, the smaller the cross-sectional width of the lower part of the formed air duct is, after the air flow enters the air duct through the long air suction port 21 on the panel 2, the air flow is smoothly discharged by the smoke exhaust fan, the better the purifying effect of the smoke exhaust fan on the oil smoke is, and the air duct structure with the big top and the small bottom is achieved, the volume of the air box assembly is simplified, and the cost can be reduced.

In other embodiments of the bellows assembly, the included angle between the second panel section 2b and the vertical surface is 3 to 15 degrees, the lower portion of the second panel section 2b has a horizontal bending portion 2d, the second panel section 2b, the left side plate 12, the right side plate 13 and the box back plate 3 form an air duct cavity with one inclined side and one vertical side, the portion of the air duct above the long air suction port 21 is a ventilation area, and a pressure maintaining area is formed between the long air suction port 21 and the horizontal bending portion 2 d. The included angle between the side of the side plate part of the left side plate 12 and the side plate part of the right side plate 13 facing the user and the vertical direction is 3-15 degrees, the side plate parts of the left side plate 12 and the right side plate 13 form a structure with wide upper part and narrow lower part, the width of the lower ends of the left side plate 12 and the right side plate 13 is matched with the width of the horizontal bending part 2d, when the panel 2 is connected with the bellows frame main body 1, two sides of the first panel section 2a of the panel 2 are respectively connected with the joint parts of the left side plate 12 and the right side plate 13, the bending section 2c between the first panel section 2a and the second panel section 2b of the panel 2 is connected with the arc section between the joint parts of the left side plate 12 and the right side plate 13 and the side plate part, two sides of the second panel section 2b of the panel 2 are respectively connected with the side plate parts of the left side plate 12 and the right side plate 13, two sides of the horizontal part 2d of the panel 2 are respectively connected with the lower end edges of the left side plate 12 and the right side plate 13, and after the rear panel 3 is connected with the rear side edges of the left side plate 12 and the right side plate 13, the rear panel 12, the rear panel 13 and the rear panel 2 have large upper and lower bottoms and small air channels. Because the long air suction port 21 on the panel 2 is arranged at the middle upper part of the second panel section 2b, the smoke exhaust fan is arranged in the air exhaust box 4, when the smoke exhaust fan is started, external air enters the air duct through the long air suction port 21 on the panel 2 and flows to the air exhaust box 4 along the air duct, the part of the air duct above the long air suction port 21 is a ventilation area, air can flow in the ventilation area and flow to the air exhaust box 4, a pressure maintaining area is arranged between the long air suction port 21 and the horizontal bending part 2d, the air pressure is stable in the pressure maintaining area, and the left side plate 12, the right side plate 13, the box body rear plate 3 and the panel 2 cannot deform due to unbalanced air pressure in the air duct and external air pressure.

In other embodiments of the bellows assembly, the second panel section 2b has an angle of 5 degrees to 9 degrees with respect to the vertical plane, the horizontal bending portion 2d has an oil leakage hole connecting the air duct with the outside, and the horizontal bending portion 2d is respectively and hermetically connected with the lower ends of the rear panel 3, the left side panel 12, and the right side panel 13. The length of the second panel section 2b is adapted to the width of the box body rear plate 3, the width of the second panel section 2b is adapted to the lower ends of the left side plate 12 and the right side plate 13, when the panel 2 is connected with the bellows frame body 1, the front end of the first panel section 2a of the panel 2 is connected with the front end lower edge of the top plate 11, the left and right sides of the first panel section 2a of the panel 2 are respectively connected with the joint parts of the left side plate 12 and the right side plate 13, the bending section 2c of the panel 2 is connected with the arc parts of the left side plate 12 and the right side plate 13, the left and right sides of the second panel section 2b of the panel 2 are respectively connected with the side plate parts of the left side plate 12 and the right side plate 13, the left and right sides of the horizontal bending part 2d of the panel 2 are respectively connected with the lower ends of the side plate parts of the left side plate 12 and the right side plate 13, one side of the horizontal bending part 2d of the panel 2, which is close to the box back plate 3, is connected with the lower edge of the box back plate 3, after the panel 2 is connected with the bellows frame body 1, the panel 2, the bellows frame body 1 and the box back plate 3 enclose an air duct which takes the horizontal bending part 2d of the panel 2 as a bottom surface, takes the left side plate 12 and the right side plate 13 as side surfaces, takes the box back plate 3 as a back plate and takes the second panel section 2b of the panel 2 as a front plate, the included angle between the second panel section 2b and the vertical surface is 5-9 degrees, and the distance from the upper end of the second panel section 2b to the box back plate 3 is greater than the distance from the lower end of the second panel section 2b to the box back plate 3, and the formed air duct is of a structure with big top and small bottom. In the process that the smoke exhaust fan is started and the smoke on the user side facing the panel 2 enters the air duct through the long air suction opening 21 on the panel 2, the mixture of oil and water in the smoke exhaust fan is attached to the inner wall surface of the air duct, the mixture of oil and water in the smoke exhaust fan is attached to the impeller and the volute of the smoke exhaust fan in the process that the smoke exhaust fan enters the smoke exhaust fan, when a certain amount of the mixture of oil and water in the smoke exhaust fan is accumulated, the mixture of oil and water flows downwards along the wall surface of the air duct, the mixture of oil and water on the smoke exhaust fan also drops downwards, the oil and water on the wall surface of the air duct flow onto the bottom wall surface of the air duct, the oil drops dropping on the smoke exhaust fan also drop onto the bottom wall surface of the air duct, the bottom wall surface of the air duct is the horizontal bent part 2d of the panel 2, so that the mixture of oil and water can be finally gathered on the horizontal bent part 2d of the panel 2, and the mixture of oil and water gathered on the horizontal bent part 2d of the panel 2 is discharged. In addition, because the oil dropping hole on the horizontal bending part 2d of the panel 2 is communicated with the outside, when the smoke exhaust fan is started and negative pressure is formed in the air duct, the outside air can enter the air duct from the oil dropping hole to supplement the air in the air duct, so that the part of the air duct from the long air suction port 21 to the horizontal bending part 2d forms a pressure maintaining area.

In actual use, in order to avoid the mixture of oil and water discharged from the oil drop hole to directly drop onto the kitchen table, the oil collecting groove is connected below the horizontal bending part 2d, the oil collecting groove is detachably connected with the horizontal bending part 2d, the mixture of oil and water discharged from the oil drop hole on the horizontal bending part 2d drops into the oil collecting groove and is collected by the oil collecting groove, and after a certain amount of the mixture of oil and water in the oil collecting groove is accumulated, the oil collecting groove is taken down from the lower part of the horizontal bending part 2d, so that the mixture of oil and water in the oil collecting groove can be treated.

Referring to fig. 1, in the bellows assembly of the present utility model, connecting rods 14 are disposed inside rear vertical mounting surfaces of a left side plate 12 and a right side plate 13, and the connecting rods 14 are fixedly connected to corresponding positions of the left side plate 12 and the right side plate 13, respectively. The connecting rod 14 connects left side plate 12 and right side plate 13, not only can strengthen the intensity of left side plate 12 and right side plate 13 to when box back plate 3 is connected with bellows frame main part 1, be connected with box back plate 3, strengthened the intensity of box back plate 3, make the structure of whole bellows subassembly more stable.

The air box component of the utility model eliminates the air box, the air channel is directly surrounded by the left side plate 12, the right side plate 13, the panel 2 and the box body rear plate 3, the structure of the air box component is simplified, the long air suction opening 21 on the panel 2 is directly communicated with the air channel, the structure of the long air suction opening 21 is simplified, and the air inlet effect is better.

The utility model also discloses a range hood, which comprises the bellows assembly and further comprises a display panel 6, wherein the panel 2 is in sealing connection with the lower side of the display panel 6, at least one panel air outlet 22 is horizontally arranged at the position, close to the display panel 6, of the panel 2, and air exhausted by the panel air outlet 22 enters the long air inlet 21. The display panel 6 is connected to one side of the top plate 11 facing the user, the height of the display panel 6 is adapted to the width of the side, close to the user, of the extending portions of the left side plate 12 and the right side plate 13, when the display panel 6 is connected to one side of the top plate 11 facing the user, the upper edge of the display panel 6 is connected to the side, close to the user, of the top plate 11, the left side and right side edges of the display panel 6 are connected to the extending portions of the left side plate 12 and the right side plate 13, the lower edge of the display panel 6 is connected to the front end of the first panel section 2a of the panel 2, the display panel 6, the top plate 11, the extending portions of the left side plate 12 and the right side plate 13, and the first panel section 2a of the panel 2 enclose an electric control cavity, electric control devices connected to the display panel 6 and the air curtain fan assembly 5 are arranged in the electric control cavity, at least one panel air outlet 22 is arranged at the position, close to the first panel section 2a of the panel 2, close to the display panel 6, of the panel air outlet 22 is aligned to the air outlet of the air curtain fan assembly 5, and when the air curtain fan assembly 5 is started, the panel air outlet 22 discharges air flow and forms an electric air flow, and the air curtain perpendicular to the first panel section 2a of the first panel 2.

The number of the panel air outlets 22 on the first panel section 2a of the panel 2 of the range hood is adapted to the number of the air curtain fan assemblies 5, if only one air curtain fan assembly 5 is arranged, the first panel section 2a of the panel 2 is provided with a panel air outlet 22 corresponding to the air outlet of the air curtain fan assembly 5, and at this time, the panel air outlets 22 should be arranged on the first panel section 2a of the panel 2 along the width direction of the first panel section 2a of the panel 2; if the range hood is provided with two air curtain fan assemblies 5, the first panel section 2a of the panel 2 is provided with two panel air outlets 22, each air curtain air outlet 22 is aligned with one air curtain fan assembly 5, the two panel air outlets 22 are bilaterally symmetrical, and when the range hood is started, the exhaust air flows form an air curtain.

Referring to fig. 1, in the range hood of the present utility model, a vertical support plate 23 is disposed on an inner wall surface of a panel 2 along a left-right direction, and/or a shielding plate 114 is disposed on an inner wall surface of a top plate 11 along the left-right direction, and the vertical support plate 23 is connected to the shielding plate 114. The vertical support plate 23 is arranged on the first panel section 2a of the panel 2, and the downward projection distance of the vertical support plate 23 from the box back plate 3 is smaller than the downward projection distance from the panel air outlet 22 to the box back plate 3, so that when the panel 2 is connected with the bellows frame main body 1, the vertical support plate 23 is connected with the shielding plate 114, the area of the vertical support plate 23 facing the front side of a user and the area of the vertical support plate 23 facing the box back plate 3 are mutually sealed, that is, the parts of the vertical support plate 23 and the top plate 11 positioned in front of the vertical support plate 23, the parts of the first panel section 2a of the panel 2 positioned in front of the vertical support plate 23, the parts of the left side plate 12 and the right side plate 13 and the area surrounded by the display panel 6 together are electric control cavities, the electric control cavities are not communicated with the areas of the air duct and the vertical support plate 23 facing the box back plate 3, so that when the smoke exhaust fan is started, the air flow above the top plate 11 enters the electric control cavities, that the air flow enters the electric control cavities through the holes 113 above the top plate 11, and then is exhausted out of the electric control cavities through the panel air curtain assembly 5.

Referring to fig. 1 and 3 to 5, the range hood of the present utility model further includes an air curtain base 7, an air curtain exhaust port is formed on the air curtain base 7, the air curtain exhaust port is divided into a plurality of elongated strip-shaped air ports 71, the plurality of elongated strip-shaped air ports 71 are arranged in 2-3 rows, the air curtain fan assembly 5 includes a through-flow wind wheel 51, a motor 52 driving the through-flow wind wheel 51, and a volute 53 forming a vertical air guide at the air outlet side, and an air introducing end 531 of the volute 53 is close to one side of the air curtain exhaust port. According to the range hood, the cross flow wind wheel 51 is arranged along the length direction of an air curtain air outlet, when the motor 52 is started, the cross flow wind wheel 51 is started by the motor 52 and rotates, external air enters the air inlet side of the cross flow wind wheel 51 under the action of the cross flow wind wheel 51 and flows towards the air outlet side of the cross flow wind wheel 51, when the external air flows out of the air outlet side of the cross flow wind wheel 51, the external air is guided by the volute 53 and flows towards the air introducing end 531 of the volute 53, then flows towards the air curtain air outlet through the air introducing end 531 of the volute 53, and finally is discharged by a plurality of long strip-shaped air inlets 71 forming the air curtain air outlet. In the range hood, as the cross-flow wind wheel 51 is arranged along the length direction of the air curtain base 7, the plurality of strip-shaped air inlets 71 forming the air curtain air outlet are also arranged along the length direction of the air curtain base 7, when air flow is stirred by the cross-flow wind wheel 51 and is discharged to the air curtain air outlet, the air outlet quantity of each strip-shaped air inlet 71 is the same, the formed air curtain is relatively stable, and the polluted air can be effectively prevented from escaping outwards through the air curtain. In addition, when the power of the cross flow wind wheel 51 is fixed, the larger the effective air outlet area of the air curtain air outlet is, the smaller the air pressure at each of the elongated strip-shaped air openings 71 is, and the smaller the flow velocity of the air flow discharged through the elongated strip-shaped air openings 71 is; the smaller the effective air outlet area of the air curtain air outlet is, the greater the air pressure at each of the elongated strip-shaped air inlets 71 is, and the greater the flow velocity of the air flow discharged through the elongated strip-shaped air inlets 71 is; the better the air curtain formed by the air flow discharged through the air curtain air outlet has the blocking effect on the escaped polluted air. According to the range hood provided by the utility model, the air curtain exhaust outlets are formed by arranging 2-3 rows of the elongated strip-shaped air inlets 71 along the length direction of the air curtain base 7, and the intervals exist between the elongated strip-shaped air inlets 71 in the same row and between the elongated strip-shaped air inlets 71 in adjacent rows, so that the effective exhaust area of the air curtain exhaust outlets can be reduced, the wind pressure and the exhaust speed at the elongated strip-shaped air inlets 71 are improved, and the air curtain formed by the air flow exhausted through the elongated strip-shaped air inlets 71 can better block the escaped polluted air.

It should be understood that, in order to make the air curtain formed by the air flow discharged through the elongated strip-shaped air openings 71 have continuity, the elongated strip-shaped air openings 71 of two adjacent rows are staggered, that is, the interval between the two adjacent elongated strip-shaped air openings 71 of the first row is aligned with one elongated strip-shaped air opening 71 of the second row, and the interval between the two adjacent elongated strip-shaped air openings 71 of the second row is aligned with one elongated strip-shaped air opening 71 of the third row, and so on, so that the air flow discharged through the plurality of elongated strip-shaped air openings 71 has continuity in the length direction of the air curtain base 7, and can effectively block the escape of polluted air.

According to the range hood, the length-width ratio of the slender strip-shaped air port 71 is 2-12, the slender strip-shaped air port 71 is provided with a height extending along the air outlet direction, and the ratio of the width to the height of the slender strip-shaped air port 71 is 0.3-0.5; the elongated strip-shaped air openings 71 and the adjacent elongated strip-shaped air openings 71 are provided with grid plates, the ratio of the length of the air channel corresponding to the elongated strip-shaped air opening 71 to the width of the elongated strip-shaped air opening 71 is 2-12, and the thickness is 5-10 mm. Wherein the ratio of the length of the air channel corresponding to the elongated strip tuyere 71 to the width of the elongated strip tuyere 71 is 2,3.5,5,7,9, 12 in some embodiments; under the condition of adopting a smaller length-width ratio, for example, when adopting a length-width ratio of 2 to 5, relatively concentrated air outlet is formed, so that a user can sense that the air is blown out; moreover, the air is blown out from a relatively long distance, and a plurality of air supply strip-shaped air openings are arranged at positions facing consumers; when a larger length-width ratio is adopted, for example, when a length-width ratio of 9 to 12 is adopted, a longer air curtain is formed, the air outlet is narrower, so that the local air speed is higher, the air supply distance is shorter, the high local air speed is favorable for guiding overflowed oil smoke to return to a negative pressure area of the air inlet, and the overflowed oil smoke enters the air inlet and is taken away by the smoke exhaust fan; the air port is narrower, and the length direction of the air port is correspondingly arranged in parallel with the air suction port, so that drainage is facilitated.

It should be noted that, when the power of the cross-flow wind wheel 51 is constant, the smaller the effective area of the air curtain air outlet, the greater the wind pressure at the air curtain air outlet, the greater the flow velocity of the air flow discharged through the air curtain air outlet, the stronger the stability of the formed air curtain, and the better the blocking effect on the escaped polluted air. In addition, when the effective exhaust area of the air curtain exhaust outlet is fixed, the smaller the width of the air curtain exhaust outlet is, the larger the length is, and the larger the wind pressure at the air curtain exhaust outlet is. On the basis, since the effective air outlet area of the air curtain air outlet consists of the areas of a plurality of elongated strip-shaped air inlets 71 which are arranged in a plurality of rows, in order to improve the air outlet speed of the air curtain air outlet, the length of the elongated strip-shaped air inlets 71 is far greater than the width of the air curtain air outlet, that is, the ratio of the width to the length of the elongated strip-shaped air inlets 71 is too large, that is, the length of the elongated strip-shaped air inlets 71 is not far greater than the width of the elongated strip-shaped air inlets 71, when the width of the air curtain base 7 is constant, the number of columns of the elongated strip-shaped air inlets 71 which can be formed on the air curtain base 7 is relatively small, and the air outlet speed of the elongated strip-shaped air inlets 71 cannot be improved; however, if the ratio of the width to the length of the elongated strip-shaped air openings 71 is too small, that is, the length of the elongated strip-shaped air openings 71 is much longer than the width of the elongated strip-shaped air openings, the same row needs to be composed of a plurality of elongated strip-shaped air openings 71, and each elongated strip-shaped air opening 71 is spaced, the weight and the material cost of the air curtain base 7 are increased, and in addition, too many gaps between the air curtains of each layer affect the stability of the air curtain finally formed. According to the range of the aspect ratio of the long and thin strip-shaped air openings 71 of the range of 2-12, a plurality of rows of long and thin strip-shaped air openings 71 can be formed on the air curtain base 7, the strength of the air curtain base 7 is not affected, the air outlet speed of the long and thin strip-shaped air openings 71 is ensured, the stability of the formed air curtain is ensured, and escaped polluted air can be effectively blocked.

Because the air curtain base 7 has a certain thickness, the elongated strip-shaped air openings 71 have a height extending along the air outlet direction, and the ratio of the width to the height of the elongated strip-shaped air openings 71 ranges from 0.3 to 0.5, so that the air curtain air channel formed by each elongated strip-shaped air opening 71 has a certain depth and is relatively narrow in width, and when air passes through the elongated strip-shaped air openings 71, the flow velocity of the air is increased, and the air outlet speed of the elongated strip-shaped air openings 71 can be ensured. The air channel corresponding to the long strip-shaped air opening 71 is an air curtain air channel formed by the long strip-shaped air opening 71 along the thickness direction of the air curtain base 7, and the length of the air channel corresponding to the long strip-shaped air opening 71 is the length of the long strip-shaped air opening 71, so that the width ratio of the air channel corresponding to the long strip-shaped air opening 71 to the width ratio of the long strip-shaped air opening 71 is consistent with the length-width ratio of the long strip-shaped air opening 71 and is 2-12, the wind pressure at the long strip-shaped air opening 71 can be ensured within the thickness range of the air curtain base 7, the formed air curtain is relatively high in stability, and the polluted air can be effectively prevented from escaping.

It should be noted that, when the air curtain assembly of the range hood is applied to the range hood, the air curtain base 7 is arranged above the panel of the range hood, so that the thickness of the air curtain base 7 cannot be too large, the cost is increased, the weight is too large, the installation is not easy, but the thickness of the air curtain base 7 cannot be too small, the thickness is too small, the strength is not enough, and the air curtain fan assembly 5 cannot be supported; in addition, since the elongated strip-shaped air port 71 penetrates the air curtain base 7 along the thickness of the air curtain base 7, the thickness of the elongated strip-shaped air port 71 is consistent with the thickness of the air curtain base 7, if the thickness of the air curtain base 7 is too large, the air duct formed by the elongated strip-shaped air port 71 is too large in thickness, the air resistance when downwards exhausting air to form an air curtain is too large, the thickness of the air curtain base 7 is too small, the air duct formed by the elongated strip-shaped air port 71 is too small, the air flow exhausted by the through-flow wind wheel 51 is too easy to be exhausted through the elongated strip-shaped air port 71, the wind pressure is limited, and the flow rate cannot be increased. Therefore, in the embodiment, the thickness of the air curtain base 7 ranges from 5mm to 10mm, so that the fan assembly 5 can be supported with enough strength, and the thickness of the air curtain base 7 cannot be excessively large, and the cost is excessively high; meanwhile, the thickness range of the air curtain base 7 is 5mm-10mm, the thickness range of the air channel corresponding to the slender strip-shaped air port 71 is 5mm-10mm correspondingly, the air flow is not affected, the flow speed of the air flow passing through the air channel corresponding to the slender strip-shaped air port 71 can be improved, the formed air curtain is high in strength, and the blocking effect on escaping polluted air can be guaranteed.

Referring to fig. 4 and 5, in the range hood of the present utility model, the volute 53 extends outward at the air inducing end 531 to form a clamping end 532, and the air curtain base 7 has a clamping groove 72 at a position corresponding to the clamping end 532, where the clamping end 532 is inserted into the clamping groove 72. The induced air end 531 of spiral case 53 and wind curtain base 7 butt, then induced air end 531 outwards extends and forms joint end 532, when the equipment is used for the wind curtain subassembly of lampblack absorber, makes induced air end 531 of spiral case 53 towards the wind curtain air exit place side on the wind curtain base 7, then makes joint end 532 and the draw-in groove 72 joint on the wind curtain base 7, can accomplish the connection of spiral case 53 and wind curtain base 7, makes the whole wind curtain subassembly simple structure that is used for the lampblack absorber, easy dismounting, can effectively reduce cost.

In the range hood of the present utility model, the air curtain blower assembly 5 has the end side plate 54 and the tail side plate 55 defining the position of the cross flow wind wheel 51, and the end side plate 54 and/or the tail side plate 55 are detachably connected with the fixing position 73 of the corresponding structure of the air curtain base 7. The cross flow wind wheel 51 is arranged along the length direction of the wind curtain base 7, one end of the cross flow wind wheel 51 connected with the motor 52 is the end side of the cross flow wind wheel 51, the other end is the tail side of the cross flow wind wheel 51, the end side plate 54 and the tail side plate 55 are respectively arranged at the end side and the tail side of the cross flow wind wheel 51, the cross flow wind wheel 51 is arranged between the end side plate 54 and the tail side plate 55, one end of the cross flow wind wheel 51, which is arranged at the end side plate 54, extends out of the end side plate 54 and is connected with the motor 52, and the tail end of the cross flow wind wheel 51 is rotatably connected with the tail side plate 55; when the air curtain component for the range hood is assembled, the air curtain fan component 5 can be installed on the air curtain base 7 by respectively connecting the end side plate 54 and the tail side plate 55 with the fixing position 73 on the air curtain base 7, so that the whole air curtain component for the range hood is simple in structure, convenient to assemble and disassemble and capable of effectively reducing cost. In the illustrated embodiment, the end side plate 54 and the tail side plate 55 are provided with connecting positions, the fixing positions 73 corresponding to the air curtain base 7 are connecting pieces, and the screws pass through screw holes on the connecting positions and the connecting pieces to detachably connect the end side plate 54 and the tail side plate 55 with the air curtain base 7 and corresponding structures.

Referring to fig. 4 and 5, in the range hood of the present utility model, the air curtain fan assembly 5 has a volute tongue 56, the volute tongue 56 is disposed opposite to the volute 53, and the volute tongue 56 extends toward the air curtain air outlet and extends to the other side of the air curtain air outlet; the extension of the volute tongue 56 is close to the upper surface of the air curtain base 7 and is connected with the upper surface of the air curtain base by a fastener. The air inducing end 531 of the scroll case 53 extends to one side of the air curtain exhaust port, the scroll tongue 56 extends to the air curtain exhaust port, and extends to the other side of the air curtain exhaust port, so that when the motor 52 drives the cross flow wind wheel 51 to rotate, the air flow exhausted from the cross flow wind wheel 51 flows between the scroll case 53 and the scroll tongue 56, and flows to the air curtain exhaust port under the guidance of the air inducing end 531 of the scroll case 53 and one end of the scroll tongue 56 extending to the air curtain exhaust port, and finally is exhausted from the plurality of elongated strip-shaped air ports 71 constituting the air curtain exhaust port. In addition, the air inlet side of the cross-flow wind wheel 51 is formed at one end of the volute 53 and the volute tongue 56 far away from the air curtain base 7, and when the cross-flow wind wheel 51 is driven by the motor 52 and rotates, air flow enters from one end of the volute 53 and the volute tongue 56 far away from the air curtain base 7 under the driving of the cross-flow wind wheel 51, is discharged from one side of the volute 53 and the volute tongue 56 near the air curtain base 7, and is discharged from an air curtain air outlet on the air curtain base 7 to the outer side of the air curtain base 7.

Referring to fig. 5, in the range hood of the present utility model, a volute 53 has an outwardly extending clamping end 532, and a compressible noise reduction sealing layer is disposed between the clamping end 532 and the upper surface of the air curtain base 7; the air curtain fan assembly 5 is provided with a volute tongue 56, the volute tongue 56 is arranged opposite to the volute 53, the volute tongue 56 is provided with an extension section extending towards an air curtain exhaust outlet, and a compressible noise reduction sealing layer is arranged between the extension section of the volute tongue 56 and the upper surface of the air curtain base 7. When the cross-flow wind wheel 51 is driven by the motor 52 and rotates, air flow enters from one end of the volute 53 and the volute tongue 56, which is far away from the air curtain base 7, flows between the volute 53 and the volute tongue 56, is discharged from one end of the volute 53 and the volute tongue 56, which is close to the air curtain base 7, and is discharged from an air curtain air outlet on the air curtain base 7 to the outer side of the air curtain base 7; because the clamping end 532 extending outwards on the volute 53 is connected with the clamping groove 72 on the air curtain base 7, and the extension section of the volute tongue 56 is close to the upper surface of the air curtain base 7 and is connected with the upper surface of the air curtain base 7 through a fastener, when the cross-flow wind wheel 51 is driven by the motor 52 and rotates, the cross-flow wind wheel 51 can vibrate, so that the volute 53 and the volute tongue 56 vibrate; when the air flow flows between the volute 53 and the volute tongue 56, the impact force of the air flow also enables the volute 53 and the volute tongue 56 to vibrate, larger contrast is generated, user experience is affected, and in the long-term use and vibration process, the connection part of the volute 53 and the volute tongue 56 and the air curtain base 7 is loosened, so that the service life of the air curtain assembly for the range hood is affected; in addition, in the process of the cross flow wind wheel 51, the airflow vibration volute 53 and the volute tongue 56, airflow discharged through an air curtain exhaust outlet on the air curtain base 7 can leak from gaps between the volute 53 and the air curtain base 7 and between the volute tongue 56 and the air curtain base 7, so that the flow rate and the flow velocity of the airflow discharged from the air curtain exhaust outlet are influenced; according to the air curtain component for the range hood, the compressible noise reduction sealing layer is arranged between the clamping end 532 and the upper surface of the air curtain base 7, the compressible noise reduction sealing layer is arranged between the extension section of the volute tongue 56 and the upper surface of the air curtain base 7, when the through-flow wind wheel 51 is driven by the motor 52 and rotates, the volute 53 and the volute tongue 56 vibrate due to vibration of the through-flow wind wheel 51, and the compressible noise reduction sealing layer is arranged between the clamping end 532 and the upper surface of the air curtain base 7, so that vibration and noise between the clamping end 532 of the volute 53 and the air curtain base 7 can be reduced, and air leakage from the clamping end 532 and the air curtain base 7 is avoided; a compressible noise-reducing sealing layer is arranged between the extension of the volute tongue 56 and the upper surface of the air curtain base 7, and the noise-reducing sealing layer can reduce vibration and noise between the extension of the volute tongue 56 and the air curtain base 7 and prevent air flow from leaking between the extension of the volute tongue 56 and the air curtain base 7.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, or alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. A bellows subassembly for range hood, its characterized in that: including bellows frame body (1), panel (2) and bellows frame body (1) front side connection and box back plate (3) that bellows frame body (1) rear side is connected, the level is provided with long inlet scoop (21) on panel (2), bellows frame body (1) include roof (11) and with integrative left side board (12) and right side board (13) that link to each other of roof (11), left side board (12) and right side board (13) respectively with roof (11) sealing connection, panel (2), left side board (12), right side board (13) and box back plate (3) enclose jointly the intercommunication and follow long inlet scoop (21) to the wind channel of exhaust port (111) on roof (11).

2. The bellows assembly according to claim 1, wherein an exhaust box connecting portion (112) is arranged at a smoke outlet (111) on the top plate (11), the exhaust box connecting portion (112) is used for connecting a corresponding connecting structure of the exhaust bellows (4), an electric control cavity is arranged between the top plate (11) and the front side of the panel (2), an air curtain fan assembly (5) is arranged in the electric control cavity, an air inlet hole (113) is formed in the top plate (11), and an air outlet of the air curtain fan assembly (5) faces a panel air outlet (22) at a corresponding position on the panel (2).

3. The bellows assembly according to claim 1, wherein the left side plate (12) and the right side plate (13) are in sealing connection with the top plate (11) through a circular arc section, a smoke exhaust fan forms a negative pressure zone at a smoke exhaust port (111) of the top plate (11), and a horizontal pressure equalizing zone is defined by the top plate (11), the face plate (2), the left side plate (12), the right side plate (13) and the box back plate (3) at two sides of the negative pressure zone, and the pressure equalizing zone is connected with the negative pressure zone.

4. The bellows assembly according to claim 1, wherein the panel (2) has a first panel section (2 a) and a second panel section (2 b), the first panel section (2 a) being inclined to the horizontal at an angle of 0.1 to 10 degrees to the horizontal and the second panel section (2 b) being inclined to the vertical at an angle of 1 to 25 degrees to the vertical; the first panel section (2 a) and the second panel section (2 b) are connected by a bending section (2 c); the long air suction opening (21) is positioned at the middle upper part of the second panel section (2 b).

5. The bellows assembly according to claim 4, wherein an included angle between the second panel section (2 b) and the vertical surface is 3 degrees to 15 degrees, a horizontal bending portion (2 d) is arranged at the lower portion of the second panel section (2 b), an air duct cavity with one inclined side and one vertical side is formed by the second panel section (2 b), the left side plate (12), the right side plate (13) and the rear case plate (3), a part of the air duct above the long air suction inlet (21) is a ventilation area, and a pressure maintaining area is arranged between the long air suction inlet (21) and the horizontal bending portion (2 d).

6. The bellows assembly according to claim 5, wherein the second panel section (2 b) has an angle of 5 degrees to 9 degrees with respect to the vertical surface, the horizontal bending portion (2 d) has an oil leakage hole connecting the air duct with the outside, and the horizontal bending portion (2 d) is respectively and hermetically connected with the box back plate (3), the lower end of the left side plate (12) and the lower end of the right side plate (13).

7. The bellows assembly according to claim 1, wherein a connecting rod (14) is provided inside the rear vertical mounting surfaces of the left side plate (12) and the right side plate (13), and the connecting rod (14) is fixedly connected to corresponding positions of the left side plate (12) and the right side plate (13), respectively.

8. A range hood comprising a bellows assembly according to any one of claims 1 to 7, and further comprising a display panel (6), wherein the panel (2) is in sealing connection with the underside of the display panel (6), at least one panel air outlet (22) is horizontally arranged at a position of the panel (2) close to the display panel (6), and air discharged from the panel air outlet (22) enters the long air suction inlet (21).

9. The range hood according to claim 8, wherein an inner wall surface of the panel (2) is provided with a vertical support plate (23) along a left-right direction, and/or an inner wall surface of the top plate (11) is provided with a shielding plate (114) along the left-right direction, and the vertical support plate (23) is connected with the shielding plate (114).

10. The range hood according to claim 8, further comprising an air curtain base (7), wherein an air curtain exhaust port is formed on the air curtain base (7), the air curtain exhaust port is divided into a plurality of elongated strip-shaped air ports (71), the plurality of elongated strip-shaped air ports (71) are arranged in 2-3 rows, the air curtain fan assembly (5) comprises a through-flow wind wheel (51), a motor (52) for driving the through-flow wind wheel (51), and a volute (53) for forming a vertical air guide on an air outlet side, and an air introducing end (531) of the volute (53) is close to one side of the air curtain exhaust port.