CN217004598U - Oil absorption is bellows device for cigarette and uses its integrated kitchen - Google Patents

Abstract

The utility model relates to an air box device for absorbing oil smoke and an integrated stove using the same, comprising: the top of the air box is provided with a mounting port, the side part of the air box is provided with an air outlet, and the inner wall of the air box is provided with a support frame; the centrifugal fan is placed on the supporting frame of the air box through a mounting opening in the top of the air box and comprises a volute, and the volute is provided with an air outlet; an air outlet flange is arranged at the position of an air outlet of the volute, a positioning groove is arranged at the position, close to the bottom edge of the air outlet, on the inner wall of the air box, a positioning groove is formed in the position, on the supporting frame, of the centrifugal fan, the air outlet of the volute is opposite to the air outlet of the air box, the bottom of the air outlet flange is limited in the positioning groove, and the bottom of the air outlet flange abuts against the inner side of the periphery of the air outlet of the air box. The positioning groove arranged at the air outlet of the air box facilitates quick installation of the volute of the centrifugal fan, and simultaneously ensures that the volute air outlet can be accurately aligned with the air outlet of the air box after the centrifugal fan is placed in place, so that quick positioning is realized, and the installation time of the centrifugal fan is greatly saved.

Description

Oil absorption is bellows device for cigarette and uses its integrated kitchen

Technical Field

The utility model relates to the technical field of kitchen appliances, in particular to an air box device for absorbing oil smoke and an integrated stove using the same.

Background

The integrated kitchen range is a kitchen appliance integrating multiple functions of a range hood, a gas stove, a disinfection cabinet, a storage cabinet and the like, and has the advantages of space saving, good oil fume extraction effect, energy saving, low consumption, environmental protection and the like.

Integrated cookers typically include a windbox and a fan system disposed within the windbox. The traditional fan system of the integrated stove is arranged in a mode that the air outlet of the fan is downward, and the air outlet of the cabinet is arranged in a lateral mode, for example, the fan system of the traditional integrated stove is in a side-suction and bottom-discharge type integrated stove with the application number of CN201020589085.9 (the authorized bulletin number is CN201875781U) and discloses a wind box structure. At present, a horizontal straight-line type air box structure with a fan air outlet directly facing to the side part is also provided, for example, a Chinese utility model patent with the application number of CN201821091291.X (with the authorized publication number of CN208720307U) discloses an integrated stove, the air outlet of a centrifugal fan of the integrated stove is in the same direction with the air flow discharge direction of a bottom air channel, and straight-line emission of smoke can be realized without reversing.

In order to facilitate the installation of the fan system, most of the existing integrated cookers are provided with a mounting opening at the top of the air box, and the fan system is installed into the air box from top to bottom through the mounting opening, as disclosed in the chinese utility model with application number 201820050679.9 (publication number: CN207763022U), however, the air outlet of the fan cannot be guaranteed to be effectively aligned with the air outlet at the side of the air box when the fan is initially placed into the air box in the existing integrated cooker air box structure, so that multiple position adjustments are required to complete the assembly, and the assembly process is relatively complicated. Secondly, because the air outlet of the volute in the air box is horizontally arranged, in the running process of the fan, oil liquid stored at the air outlet can be directly blown out of a public flue, and fire hazard exists; especially, after long-term use, a large amount of greasy dirt accumulated at the air outlet is easy to generate peculiar smell, and the use experience of a user is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the present invention is to provide an air box device for oil smoke absorption, which can realize accurate positioning between an air outlet of a fan and an air outlet of an air box, thereby realizing quick installation of the fan, aiming at the current situation of the prior art.

The second technical problem to be solved by the utility model is to provide the air box device for the oil smoke suction, which can lead out the oil liquid stored at the air outlet of the volute in time aiming at the current situation of the prior art.

The third technical problem to be solved by the utility model is to provide an integrated stove using the air box device, aiming at the current situation of the prior art.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: an air box device for absorbing oil smoke, comprising:

the top of the air box is provided with a mounting port, the side part of the air box is provided with an air outlet, and the inner wall of the air box is provided with a support frame;

the centrifugal fan is placed on the supporting frame of the air box through a mounting opening in the top of the air box and comprises a volute, and the volute is provided with an air outlet;

an air outlet flange is arranged at an air outlet of the volute, a positioning groove is arranged at the edge of the bottom of the inner wall of the air box, which is adjacent to the air outlet, under the state that the centrifugal fan is placed on the supporting frame, the air outlet of the volute is opposite to the air outlet of the air box, and the bottom of the air outlet flange is limited in the positioning groove and is abutted against the inner side of the periphery of the air outlet of the air box.

In order to ensure that the bottom of an air outlet flange of the volute can be quickly and accurately placed in the positioning groove when the centrifugal fan is placed from top to bottom, the caliber of the upper part of the positioning groove is gradually enlarged from bottom to top to form a guide opening structure.

In order to form foretell constant head tank and simplify bellows structure consideration, be close to on the inner wall of bellows bottom border department of air exit is equipped with the locating plate, this locating plate including be used for with the base plate of the inner wall laminating of bellows and from the last border of this base plate extend the extension board that forms towards bellows inside, this extension board has relative first side and second side and the third side of connecting first side and second side in the front and back direction, first side, second side and the third side of extension board all upwards extend and form first board, second board and third board in proper order, the first board, second board, third board, the extension board of locating plate with the corresponding part of the inner wall of bellows encloses jointly and closes and form the constant head tank.

In order to form the above-mentioned pilot hole structure, the first plate of the positioning plate is adjacent to the front side wall of the windbox, and the upper portion thereof is inclined from bottom to top toward the front portion of the windbox, the second plate of the positioning plate is adjacent to the rear side wall of the windbox, and the upper portion thereof is inclined from bottom to top toward the rear portion of the windbox, the upper portion of the third plate of the positioning plate is inclined from bottom to top toward the inside of the windbox, and the inclined portion of the first plate, the inclined portion of the second plate, and the inclined portion of the third plate and the corresponding portion of the inner wall of the windbox together enclose the pilot hole structure.

In order to realize the rapid assembly of the air outlet flange and the volute, the air outlet flange comprises a frame body and a connecting plate arranged along the circumferential direction of the frame body, a first positioning hole is formed in the connecting plate, a matched positioning bulge is arranged on the outer side wall of the edge of the air outlet of the volute, the connecting plate is arranged outside the circumferential edge of the volute air outlet, and the positioning bulge is clamped in the first positioning hole.

In order to avoid the problem of air leakage or oil leakage at the joint of the air outlet of the volute and the air outlet of the air box, the air-saving device further comprises a first sealing gasket connected to the frame body of the air outlet flange, and the first sealing gasket is attached to the inner side of the periphery of the air outlet of the air box.

In order to ensure the stability of the centrifugal fan placed in the air box, the air box comprises a front side plate and a rear side plate which are opposite, supporting frames extending towards the inside of the air box are arranged on the inner walls of the front side plate and the rear side plate which are opposite, a connecting frame matched with the supporting frames is arranged on the outer wall of the volute, and the connecting frame is placed on the supporting frames and fixed through fasteners.

In order to ensure that an air outlet of the volute can be accurately aligned with an air outlet of the air box after the centrifugal fan is placed in the volute, the volute is provided with an air inlet, the connecting frames are arranged on the outer wall of the volute and correspond to the left side and the right side of the air inlet, and the connecting frames are also arranged on the outer peripheral wall of the volute and are close to the air outlet;

and the front side plate and the rear side plate of the air box are provided with matched support frames corresponding to the positions of the connecting frames.

For the installation needs, bellows include relative left side board and right side board, the air exit has two, offers respectively on the left side board and the right side board of bellows, and be symmetrical arrangement. The air outlet of the volute of the centrifugal fan can be connected with one of the air outlets on the left side and the right side according to actual needs, and various installation requirements of users are met.

In order to ensure that oil smoke entering the air box from top to bottom can smoothly enter the centrifugal fan, the air box comprises a left side plate and a right side plate which are opposite, at least the lower part of the left side plate inclines rightwards from top to bottom, and at least the lower part of the right side plate inclines leftwards from top to bottom. The air box is of a structural design with a wide upper part and a narrow lower part, plays a role in guiding oil smoke, reduces air flow turbulence, and ensures that the oil smoke is smoother when entering the volute.

In order to simplify bellows structure to and make things convenient for the centrifugal fan dismouting to consider, bellows include the roof, the roof shirks the formula and connects the top installing port department of bellows, roof top-down slopes forward to shelter from the front portion of top installing port, thereby make the rear portion part of top installing port forms the inlet scoop that supplies the flue gas to get into in the bellows.

The technical scheme adopted by the utility model for solving the second technical problem is as follows: the air outlet of spiral case with the air exit links to each other, the air outlet of spiral case with the bottom of the air exit junction of bellows has the oil groove that keeps off of recessed formation, has first oil leak mouth on the diapire of this oil groove that keeps off.

The design of the oil blocking groove at the air outlet of the volute can prevent oil in the volute from being blown into the common flue, so that potential safety hazards are eliminated; on the other hand, stay fluid in keeping off the oil groove and can in time derive downwards through first oil leak, avoided a large amount of greasy dirt that store up in air outlet department, produce the peculiar smell, seriously influenced user's use and experienced.

In order to form the oil retaining groove, the bottom edge of the air outlet of the volute is bent downwards and then faces the air outlet of the air box, a section of distance is extended to form a bent part, and the bent part is extended to the bottom edge of the air outlet of the air box, so that the oil retaining groove is defined by the corresponding part of the bottom edge of the air outlet.

In order to be connected with an external smoke pipe, the smoke exhaust device also comprises an air outlet cover connected to the outer side of the periphery of the air outlet of the air box, and a second sealing gasket is arranged between the air outlet cover and the outer side of the periphery of the air outlet of the air box.

The technical scheme adopted by the utility model for solving the third technical problem is as follows: an integrated kitchen, is including foretell oil absorption wind box device for cigarette.

Compared with the prior art, the utility model has the advantages that: the positioning groove arranged at the air outlet of the air box facilitates quick installation of the volute of the centrifugal fan, and simultaneously ensures that the volute air outlet can be accurately aligned with the air outlet of the air box after the centrifugal fan is placed in place, so that quick positioning is realized, and the installation time of the centrifugal fan is greatly saved. In the preferred scheme, an oil blocking groove is arranged at the connecting position of the air outlet of the fan and the air outlet of the air box, and oil in the volute of the centrifugal fan can be blocked in the oil blocking groove when flowing through the air outlet along with oil smoke, so that the oil is prevented from being directly blown out of a common flue, and fire hazard is eliminated; on the other hand, the first oil leak mouth that this oil baffle's diapire set up can in time derive the fluid that stores up in the oil baffle groove, has avoided long-term use to store up a large amount of fluid in air outlet department, is difficult to produce the peculiar smell, has improved user's use and has experienced.

Drawings

FIG. 1 is a schematic perspective view of a bellows apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of another angle of a bellows apparatus according to an embodiment of the present invention;

FIG. 3 is a vertical sectional view in the left-right direction of an air box device of the embodiment of the present invention;

FIG. 4 is an enlarged view of FIG. 3 at A;

FIG. 5 is a schematic perspective view of the centrifugal fan of FIG. 1 not placed in the bellows;

FIG. 6 is an exploded view of FIG. 1;

fig. 7 is a schematic perspective view of a centrifugal fan, an air outlet flange, and a first seal gasket in a separated state according to an embodiment of the present invention;

FIG. 8 is a schematic perspective view of the inside of a wind box according to an embodiment of the present invention;

fig. 9 is a schematic perspective view of a positioning plate according to an embodiment of the utility model.

Detailed Description

The utility model is described in further detail below with reference to the following examples of the drawings.

Directional terms such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", and the like are used in the description and claims of the present invention to describe various example structural parts and elements of the present invention, but these terms are used herein for convenience of description only and are determined based on example orientations shown in the drawings. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity.

Referring to fig. 1 to 9, a bellows apparatus for absorbing oil smoke includes a bellows 10 and a centrifugal fan 40 disposed in the bellows 10.

Referring to fig. 5, the wind box 10 may be fixed relative to the integrated stove body, and the whole structure of the wind box is a square box structure, specifically including a left side plate 13, a right side plate 14, a front side plate 11, a rear side plate 12, a top plate 16, and a bottom plate 15. The top of the wind box 10 is provided with a mounting port 18 for loading the centrifugal fan 40 into the wind box 10 from top to bottom, the top plate 16 of the wind box 10 is detachably connected with the top mounting port 18 of the wind box 10, and the top plate 16 inclines forwards from top to bottom and is shielded in the front area of the top mounting port 18, so that the rear side part of the top mounting port 18 forms an air suction port 180 for allowing smoke to enter into the wind box 10, the air suction port 180 is a strip-shaped port arranged in a left-right extending mode, and a protective net 181 covers the air suction port 180. Specifically, the rear side of the top plate 16 of the air box 10 has an upturned flange, and the flange of the top plate 16 defines an air intake passage communicating the air suction opening 180 with the inner space of the air box 10 together with the rear side portion of the left side plate 13, the rear side portion of the right side plate 14, and the rear side plate 12.

Referring to fig. 3, at least the lower portion of the left side plate 13 of the wind box 10 is inclined from top to bottom to right, and at least the lower portion of the right side plate 14 is inclined from top to bottom to left, so that the wind box 10 has a structural design with a wide top and a narrow bottom, and the structure can guide oil smoke, reduce air flow turbulence, and ensure that the oil smoke is smoother when entering the volute 41.

The two air outlets 17 of this embodiment are formed on the left side plate 13 and the right side plate 14 of the air box 10, respectively. The air outlet 17 on the left side plate 13 and the air outlet 17 on the right side plate 14 are symmetrically arranged. The user can connect the air outlet 413 of the volute 41 of the centrifugal fan 40 with one of the air outlets 17 on the left and right sides according to actual needs, thereby meeting various installation requirements of the user.

Referring to fig. 6, an air outlet cover 70 is disposed at the air outlet 17 of the wind box 10, and the air outlet cover 70 can be connected to an external smoke pipe. A second gasket 82 is further provided between the port of the outlet cover 70 and the outer side of the periphery of the air outlet 17 of the air box 10, and the second gasket 82 can prevent the leakage problem at the joint position of the outlet cover 70 and the air outlet 17 of the air box 10.

The centrifugal fan 40 includes a scroll 41, an impeller 42, and a motor. The volute 41 includes a front cover plate 414, a rear cover plate 415, and an annular wall 416 connected between the front cover plate 414 and the rear cover plate 415, and both ends of the annular wall 416, together with the front cover plate 414 and the rear cover plate 415, define an air outlet 413. The front cover plate 414 and the rear cover plate 415 of the volute 41 are both provided with an air inlet 411. The impeller 42 is disposed in the volute 41 and can be driven by the motor to rotate, thereby providing a negative pressure for sucking and exhausting the oil smoke. The structure and the working principle of the centrifugal fan 40 are the prior art and are not described herein.

Referring to fig. 6, a support frame 19 is provided on the inner wall of the wind box 10, and the centrifugal fan 40 can be placed on the support frame 19 of the wind box 10. Specifically, the inner walls of the front side plate 11 opposite to the rear side plate 12 are each provided with a support frame 19 extending toward the inside of the air box 10, wherein the support frame 19 may adopt a conventional corner bracket structure.

The outer wall of the volute 41 of the centrifugal fan 40 is provided with a connecting frame 43 matched with the supporting frame 19. When the centrifugal fan is installed, the connecting frame 43 on the volute 41 can be placed on the supporting frame 19 and fixed through the vertically installed screws, wherein the connecting frame 43 of the volute 41 and the supporting frame 19 of the bellows 10 are correspondingly provided with screw holes, when the centrifugal fan is assembled, the centrifugal fan 40 is placed in place, and then the screws are screwed from top to bottom.

Referring to fig. 7, the connection frame 43 on the scroll 41 has a plurality of connection frames including first connection frames 43 correspondingly disposed at left and right sides of the air inlet 411 and second connection frames 43 disposed adjacent to the air outlet 413. Wherein, the front side plate 11 and the rear side plate 12 of the air box 10 are provided with a supporting frame 19 corresponding to the positions of the first connecting frame 43 and the second connecting frame 43. In addition, since the left-right direction of the air outlet 413 of the scroll 41 of the centrifugal fan 40 of the present embodiment is changeable, the support frame 19 on the inner wall of the air box 10 is also designed appropriately corresponding to the above two states of the centrifugal fan 40.

In order to facilitate the user to take the centrifugal fan 40 for assembly, the top of the volute 41 of the centrifugal fan 40 is further provided with a handle 46, and the handle 46 has two handles, which are both arranged on the top of the annular wall 416 of the volute 41.

With continued reference to fig. 7, an air outlet flange 50 is disposed at the air outlet 413 of the volute 41. The outlet flange 50 includes a frame 51 and a connecting plate 52 arranged along a circumferential direction of the frame 51, the frame 51 of the outlet flange 50 of this embodiment is a square frame 51, and is consistent with the shape of the outlet 413 of the scroll 41, wherein the number of the connecting plates 52 is four, and the four connecting plates are respectively correspondingly connected to four sides of the frame 51. Each connecting plate 52 also has a first positioning hole 520, and correspondingly, the outer side wall of the edge of the air outlet 413 of the volute 41 has a matching positioning projection 417. During assembly, the connecting plate 52 is attached to the outer periphery of the air outlet 413 of the scroll 41, and the positioning protrusion 417 is correspondingly clamped into the first positioning hole 520 of the connecting plate 52, so that the air outlet flange 50 and the air outlet 413 of the scroll 41 are quickly assembled.

Referring to fig. 4, the frame 51 of the outlet flange 50 is further provided with a first gasket 81. The four frames of the frame body 51 of the air outlet flange 50 are also provided with second positioning holes 510, the first sealing gasket 81 is also square, and is provided with positioning columns 810 and annular clamping grooves 811, the positioning columns 810 can be correspondingly embedded into the second positioning holes 510, and the peripheral edge of the frame body 51 of the air outlet flange 50 is provided with annular flanges which can be correspondingly clamped into the annular clamping grooves 811, so that the connection between the air outlet flange 50 and the first sealing gasket 81 is realized. It is contemplated that the first gasket 81 may be adhesively connected to the outlet flange 50.

Referring to fig. 8, a positioning groove 20 is provided on the inner wall of the bellows 10 adjacent to the bottom edge of the exhaust port 17. When the centrifugal fan 40 is placed on the support frame 19, the air outlet 413 of the volute 41 is opposite to the air outlet 17 of the air box 10, and the bottom of the air outlet flange 50 is limited in the positioning groove 20 and abuts against the inner side of the periphery of the air outlet 17 of the air box 10.

Referring to fig. 8 and 9, a positioning plate 30 is disposed on the inner wall of the bellows 10 adjacent to the bottom edge of the exhaust port 17. The positioning plate 30 includes a base plate 31 for being attached to the inner wall of the bellows 10, and an extension plate 32 formed by extending from an upper edge of the base plate 31 toward the inside of the bellows 10, the extension plate 32 having first and second sides opposing in the front-rear direction and a third side connecting the first and second sides. The first side edge of the extension plate 32 extends upward to form a first plate 33, the second side edge of the extension plate 32 extends upward to form a second plate 34, and the third side edge of the extension plate 32 extends to form a third plate 35. The first plate 33, the second plate 34, the third plate 35, the extension plate 32 of the positioning plate 30 and the corresponding portions of the inner wall of the bellows 10 together enclose the positioning slot 20. More specifically, the first plate 33 of the positioning plate 30 is adjacent to the front side plate 11 of the windbox 10, and the upper portion thereof is inclined forward from bottom to top, the second plate 34 of the positioning plate 30 is adjacent to the rear side plate 12 of the windbox 10, and the upper portion thereof is inclined backward from bottom to top, and the upper portion of the third plate 35 of the positioning plate 30 is inclined inward of the windbox 10 from bottom to top, whereby the upper inclined portion of the first plate 33, the upper inclined portion of the second plate 34, and the upper inclined portion of the third plate 35 and the corresponding portion of the inner wall of the windbox 10 together enclose a guide opening structure 21, the diameter of the guide opening structure 21 is gradually increased from bottom to top, and when the centrifugal fan 40 is placed from top to bottom, the bottom of the outlet flange 50 of the volute 41 can be quickly and accurately placed in the positioning groove 20.

When the centrifugal fan 40 is placed in place, the first sealing gasket 81 on the air outlet flange 50 of the volute 41 is attached to the inner side of the periphery of the air outlet 17 of the air box 10, so that the problem of air leakage or oil leakage at the joint of the air outlet 413 of the volute 41 and the air outlet 17 of the air box 10 can be effectively solved.

Referring to fig. 4, another important point of the present embodiment is: the bottom of the connection part of the air outlet 413 of the volute 41 and the air outlet 17 of the air box 10 is provided with a concave oil blocking groove 60, and the bottom wall of the oil blocking groove 60 is provided with a first oil leakage port 61. When oil in the volute 41 of the centrifugal fan 40 flows through the air outlet 413 along with oil smoke, the oil can be trapped in the oil blocking groove 60, so that the oil is prevented from being directly blown out of a common flue, and fire hazards are eliminated. Keep off the first oil leak 61 that the diapire of oil groove 60 set up and can in time derive the fluid that stores up in keeping off oil groove 60, avoided long-term use to store up a large amount of fluid in air outlet 413 department, be difficult to produce the peculiar smell, improved user's use and experienced.

The number of the first oil leakage ports 61 in this embodiment is at least two, and each of the first oil leakage ports 61 is arranged at intervals along the length direction of the oil baffle groove 60. In addition, the diapire that keeps off oil groove 60 is along the flue gas flow direction downward sloping of air outlet 413 department, and the lowest position department of the diapire that keeps off oil groove 60 is located to first oil leak mouth 61, like this, can in time, discharge fast the fluid of gathering in keeping off oil groove 60.

Referring to fig. 7, in order to form the oil retaining groove 60, the bottom edge of the air outlet 413 of the volute 41 is bent downward and extends a distance towards the air outlet 17 of the air box 10 to form a bent portion 418, and the bent portion 418 and the corresponding portion of the bottom edge of the air outlet 17 of the air box 10 define the oil retaining groove 60. One end of the annular wall 416 of the scroll 41 forms a bottom edge of the air outlet 413 of the scroll 41, and the above-mentioned bent portion 418 is formed thereon.

Referring to fig. 3, a third oil leakage port 45 is formed at the bottom of the volute 41, so that the oil on the inner wall of the volute 41 can flow out through the third oil leakage port 45 and drop on the bottom plate 15 of the air box 10 correspondingly below the volute 41. The bottom plate 15 of the bellows 10 is inclined downward from the outer periphery thereof to the middle region thereof, and a second oil leakage port 150 is formed at the middle region. The bottom of the scroll 41 also has a wind-blocking cap 44 shielded below the third oil drain port 45. The design of the wind-shield cap 44 at the bottom of the volute 41 can reduce the pressure relief of the volute 41 and ensure the static pressure of the air duct system, thereby ensuring the oil smoke suction effect.

On the other hand, in order to ensure that the oil in the oil blocking groove 60 can smoothly drop downwards through the first oil leakage port 61, the connecting plate 52 of the air outlet flange 50 is provided with a first notch 521 at a position corresponding to the position covering the first oil leakage port 61, and a second notch 350 is provided at a position of the third plate 35 of the positioning bag, which is correspondingly located right below the first oil leakage port 61.

The embodiment also discloses an integrated kitchen, and the integrated kitchen adopts foretell bellows device.

Claims (15)

1. Air box device for oil absorption cigarette includes:

the top of the air box (10) is provided with a mounting port (18), the side part of the air box is provided with an air outlet (17), and the inner wall of the air box (10) is provided with a support frame (19);

the centrifugal fan (40) is placed on the supporting frame (19) of the air box (10) through a mounting opening (18) in the top of the air box (10), the centrifugal fan (40) comprises a volute (41), and the volute (41) is provided with an air outlet (413);

the method is characterized in that: air outlet (413) department of spiral case (41) is equipped with air outlet flange (50), the bottom border department of neighbouring air exit (17) on bellows (10) inner wall is equipped with constant head tank (20) centrifugal fan (40) are placed under the state on support frame (19), air outlet (413) of spiral case (41) with air exit (17) of bellows (10) are just right, the bottom of air outlet flange (50) is spacing be in constant head tank (20) in, and with the week of air exit (17) of bellows (10) is along inboard offseting.

2. The range hood device according to claim 1, wherein: the caliber of the upper part of the positioning groove (20) is gradually enlarged from bottom to top to form a guide opening structure (21).

3. The range hood device according to claim 2, wherein: a positioning plate (30) is arranged on the inner wall of the air box (10) and is close to the bottom edge of the air outlet (17), the positioning plate (30) comprises a base plate (31) which is attached to the inner wall of the air box (10) and an extension plate (32) which is formed by extending from the upper edge of the base plate (31) to the inside of the air box (10), the extension plate (32) has first and second side edges opposed in the front-rear direction and a third side edge connecting the first and second side edges, the first side edge, the second side edge and the third side edge of the extension plate (32) extend upwards to form a first plate (33), a second plate (34) and a third plate (35) in sequence, the first plate (33), the second plate (34), the third plate (35), the extension plate (32) and the corresponding parts of the inner wall of the air box (10) of the positioning plate (30) are enclosed together to form the positioning groove (20).

4. The range hood device according to claim 3, wherein: a first plate (33) of the positioning plate (30) is adjacent to the front side wall of the air box (10), the upper portion of the first plate is inclined towards the front portion of the air box (10) from bottom to top, a second plate (34) of the positioning plate (30) is adjacent to the rear side wall of the air box (10), the upper portion of the second plate is inclined towards the rear portion of the air box (10) from bottom to top, the upper portion of a third plate (35) of the positioning plate (30) is inclined towards the interior of the air box (10) from bottom to top, and the inclined portion of the first plate (33), the inclined portion of the second plate (34) and the inclined portion of the third plate (35) and the corresponding portion of the inner wall of the air box (10) jointly enclose to form the guide opening structure (21).

5. The range hood device according to claim 1, wherein: the air outlet flange (50) comprises a frame body (51) and a connecting plate (52) arranged along the circumferential direction of the frame body (51), a first positioning hole (520) is formed in the connecting plate (52), a matched positioning bulge (417) is formed in the outer side wall of the edge of the air outlet (413) of the volute (41), the connecting plate (52) is arranged outside the circumferential edge of the air outlet (413) of the volute (41), and the positioning bulge (417) is clamped into the first positioning hole (520).

6. The range hood device according to claim 1, wherein: the air outlet flange structure is characterized by further comprising a first sealing gasket (81) connected to the frame body (51) of the air outlet flange (50), wherein the first sealing gasket (81) is attached to the inner side of the periphery of the air outlet (17) of the air box (10).

7. The range hood device according to any one of claims 1 to 6, wherein: the air box (10) comprises a front side plate (11) and a rear side plate (12) which are opposite, supporting frames (19) which extend towards the inside of the air box (10) are arranged on the inner walls, opposite to the front side plate (11) and the rear side plate (12), of the air box, a connecting frame (43) which is matched with the supporting frames (19) is arranged on the outer wall of the volute (41), and the connecting frame (43) is placed on the supporting frames (19) and fixed through fasteners.

8. The range hood device according to claim 7, wherein: the volute (41) is provided with an air inlet (411), the connecting frames (43) are arranged on the outer wall of the volute (41) corresponding to the left side and the right side of the air inlet (411), and the connecting frames (43) are also arranged on the outer peripheral wall of the volute (41) adjacent to the air outlet (413);

and the front side plate (11) and the rear side plate (12) of the air box (10) are provided with support frames (19) which are matched with the positions of the connecting frames (43).

9. The range hood device according to claim 7, wherein: bellows (10) are including relative left side board (13) and right side board (14), air exit (17) have two, set up respectively on left side board (13) and the right side board (14) of bellows (10), and be symmetrical arrangement.

10. The range hood device according to claim 7, wherein: the air box (10) comprises a left side plate (13) and a right side plate (14) which are opposite to each other, at least the lower part of the left side plate (13) inclines rightwards from top to bottom, and at least the lower part of the right side plate (14) inclines leftwards from top to bottom.

11. The range hood device according to any one of claims 1 to 6, wherein: the air box (10) comprises a top plate (16), the top plate (16) is detachably connected to a top mounting opening (18) of the air box (10), the top plate (16) inclines forwards from top to bottom and is shielded in the front of the top mounting opening (18), and therefore the rear side portion of the top mounting opening (18) forms an air suction opening (180) for smoke to enter the air box (10).

12. The range hood device according to any one of claims 1 to 6, wherein: the air outlet (413) of the volute (41) is connected with the air outlet (17), a concave oil blocking groove (60) is formed in the bottom of the joint of the air outlet (413) of the volute (41) and the air outlet (17) of the air box (10), and a first oil leakage opening (61) is formed in the bottom wall of the oil blocking groove (60).

13. The range hood device according to claim 12, wherein: the bottom edge of an air outlet (413) of the volute (41) is bent downwards and then extends for a certain distance towards the air outlet (17) of the air box (10) to form a bent part (418), and the bent part (418) extends to the bottom edge of the air outlet (17) of the air box (10), so that the corresponding part of the bottom edge of the air outlet (17) defines the oil blocking groove (60).

14. The range hood device according to any one of claims 1 to 6, wherein: still including connecting air-out gauze mask (70) in the outside on the week edge of air exit (17) of bellows (10), air-out gauze mask (70) with be equipped with the sealed pad (82) of second between the week edge outside of air exit (17) of bellows (10).

15. An integrated kitchen, its characterized in that: the range hood device for absorbing oil smoke according to any one of claims 1 to 12.

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