CN116772252A - Air collecting box assembly and range hood with same - Google Patents

Abstract

The invention discloses a wind collecting box assembly and a range hood with the same, wherein the wind collecting box assembly comprises a front side plate and a vertically arranged rear plate, the front side plate comprises an inclined section and a vertical section, the upper part of the inclined section is forwards inclined, the lower part of the inclined section is horizontally provided with a strip-shaped wind box air inlet, a smoke exhaust fan is arranged in a part, aligned with the vertical section, of the wind collecting box assembly, and a wind guiding and oil blocking plate is arranged between the smoke exhaust fan and the wind box air inlet; compared with the prior art, the air collecting box assembly has the advantages that the air guide oil baffle plate is arranged between the smoke exhaust fan and the air inlet of the air box, and waste oil attached to the front side plate cannot flow out of the panel through the air inlet of the air box when flowing downwards along the front side plate, so that the range hood is attractive in appearance, and the sanitary condition of a kitchen can be improved.

Description

Air collecting box assembly and range hood with same

Technical Field

The invention relates to the technical field of range hoods, in particular to a wind collecting box assembly and a range hood with the wind collecting box assembly.

Background

The range hood is disposed above the kitchen range for extracting and discharging oil smoke generated during cooking of food when a user cooks the food. The range hood is used for extracting oil smoke and accomplishes by album bellows subassembly, album bellows subassembly is including the casing that is equipped with the cavity, cavity part in the casing is used for installing the fan main part that the oil smoke was used, another part is used for forming the wind chamber, during the range hood operation, the fan starts, draw in the wind chamber with the oil smoke, but in long-term use, the waste oil that the oil smoke was collected can follow the oil drip hole of exhaust fan and fall down, part waste oil still can flow down along album bellows subassembly's inner wall face, be equipped with the bellows air intake on album bellows subassembly's the front panel, the bellows air intake is connected with the panel air intake on the range hood panel, when waste oil flows down along album bellows subassembly's the front panel inner wall, if flow to the front panel be equipped with the panel air intake the position department of bellows, the condition that the panel air intake outwards falls out from the bellows air intake can appear in waste oil, the panel air intake can follow panel outward face and continue to flow, and drip down on the kitchen range hood, the health condition is still influenced.

Disclosure of Invention

The invention aims to provide a wind collecting box assembly and a range hood with the same, which are used for solving the technical problems.

The utility model provides an album bellows subassembly for lampblack absorber, back plate including preceding curb plate and vertical setting, preceding curb plate is including setting up incline section and the vertical face section of a positive upper portion forward rake, is provided with rectangular bellows air intake in the lower part level of incline section, is provided with the exhaust fan in the portion that album bellows subassembly and vertical face section are aligned, is provided with wind-guiding oil baffle between exhaust fan and bellows air intake.

According to one embodiment of the invention, the air guide oil baffle forms an inclined angle with a high front side and a low rear side, the smoke exhaust fan is provided with an oil dropping hole, the air guide oil baffle is provided with an oil receiving part at a position vertically corresponding to the oil dropping hole and/or an air inlet of the air box, one side close to the rear plate is provided with an air guide part, and the air guide part is an air guide strip of a plurality of long oval Kong Daofeng parts which are arranged at intervals and are arranged on the air guide oil baffle which is obliquely arranged.

According to one embodiment of the invention, a wind guiding strip is formed between two adjacent wind guiding parts, and the wind guiding strip comprises a base surface and wind guiding sections which are integrally formed on two sides of the base surface and bent upwards by round corners; the air guide oil baffle plate is connected with one side of the rear plate, and a first oil leakage hole is formed near the rear plate and is used for enabling oil to flow down along the rear plate; the base surface of the air guide strip which is obliquely arranged is connected with the oil receiving part and the first oil leakage hole.

According to one embodiment of the invention, the left side and the right side of the air collecting box assembly are air box side plates in sealing connection, an air box bottom plate provided with at least one second oil leakage hole is arranged below the air collecting box assembly, and a connecting structure is arranged on the outward side of the inclined section and used for connecting an air port fixing part corresponding to a panel of the range hood.

According to one embodiment of the invention, the rear plate and the inclined section are provided with a wind collecting cavity with a large side surface and a small side surface, an exhaust cavity for arranging a smoke exhaust fan is formed between the vertical section and the rear plate, a wind box air inlet is positioned at the lower part of the wind collecting cavity, and the distance between the lower edge of the wind box air inlet and a wind box bottom plate is 2.5-10 cm; one side of the wind-guiding oil baffle is connected with the rear plate, and the other side is connected with the front side plate.

According to one embodiment of the invention, the air box side plate of the air box assembly is provided with a vertical section and an expansion section, the vertical section is positioned at the upper part of the air box side plate, the expansion section is positioned at the lower part of the air box side plate, the expansion section extends to the left side and the right side, a fan cavity for arranging a smoke exhaust fan is formed between the air box side plates at the left side and the right side, and the fan cavity is communicated with an air inlet of the air box.

According to one embodiment of the invention, the wind-guiding oil baffle plate is arranged on the upper side of the expansion section of the side plate and is arranged in the center of the air inlet of the air box, the central air flow passing through the plurality of wind-guiding parts and the air flow on two sides flowing from the left side and the right side along the expansion section of the side plate of the air box on the left side and the right side are formed by the baffle plate of the wind-guiding oil baffle plate, and the ratio of the width of the air channel surface of the width of the wind-guiding oil baffle plate at the position of the wind-guiding oil baffle plate is 0.6-1.2 times of the actual size.

According to one embodiment of the invention, the air inlet of the air box assembly is obliquely arranged, the air flow passing through the air box assembly is opposite to the air guiding part, and the angle between the air guiding part and the air flow is an obtuse angle.

The range hood comprises the air collecting box assembly and further comprises a shell, wherein the air collecting box assembly is arranged in the shell and comprises an oil collecting structure, and oil flowing down from the air guide oil baffle plate is collected in the oil collecting structure and enters the oil collecting groove through the oil drain hole.

According to one embodiment of the invention, the shell comprises a panel, a top cover and a back plate, wherein the panel is provided with a panel air inlet corresponding to the air inlet of the bellows, and one side of the panel facing the front side plate is provided with an air inlet fixing part for being connected with the connecting structure; the top cap includes the top cap body, with the top cap curb plate of the left and right sides body coupling and the supporting part of the top cap curb plate of the left and right sides of connection, be equipped with at least one third oil leak hole on the supporting part, the oil drain structure is the supporting part and locates the third oil leak hole on the supporting part.

Compared with the prior art, the air collecting box assembly has the following advantages:

according to the air collecting box assembly, the air guide oil baffle plate is arranged between the smoke exhaust fan and the air inlet of the air box, and waste oil attached to the front side plate cannot flow out of the panel through the air inlet of the air box when flowing downwards along the front side plate, so that the range hood can be attractive in appearance, and the sanitary condition of a kitchen can be improved.

Drawings

FIG. 1 is a schematic view of the structure of a bellows assembly of the present invention;

FIG. 2 is an exploded view of the bellows assembly of the present invention;

FIG. 3 is a schematic view of the structure of the air guide and oil baffle plate of the air collection box assembly of the present invention;

fig. 4 is a front view of a range hood having a bellows assembly of the present invention;

FIG. 5 is a cross-sectional view taken along the direction A-A in FIG. 4;

FIG. 6 is an enlarged view of a portion of FIG. 5A;

FIG. 7 is a cross-sectional view taken along the direction B-B in FIG. 4;

FIG. 8 is an enlarged view of a portion of B in FIG. 7;

FIG. 9 is a cross-sectional view taken along the direction C-C in FIG. 4;

FIG. 10 is an enlarged view of a portion of C in FIG. 9;

fig. 11 is a schematic structural view of a panel of the range hood according to the present invention;

fig. 12 is a schematic view of another direction of a panel of the range hood according to the present invention;

fig. 13 is a schematic structural view of a top cover of a range hood according to the present invention

In the figure: 11. front side plate, 111 inclined section, 1111, bellows inlet, 1112, connecting structure, 112, vertical section, 12, bellows side plate, 121, vertical section, 122, expansion section, 123, arc section, 13, bellows bottom plate, 131, second oil leakage hole, 14, rear plate, 2, smoke exhaust fan, 21, oil drop hole, 3, air guide oil baffle, 31, oil receiving portion, 32, air guide portion, 33, air guide strip, 331, base surface, 332, air guide section, 34, first oil leakage hole, 4, panel, 41, inclined section, 411, panel inlet, 412, tuyere fixing portion, 413, fixed connecting portion, 42, horizontal section, 421, strip through hole, 43, upper connecting portion, 431, fastener, 432 connecting piece. Lower end face, 441, bump, 442, second connecting hole, 45, bent connecting face, 46, first bend, 5, top cover, 51, top cover body, 511, duct via, 512, access opening, 513, bellows assembly connecting portion, 514, shroud connecting portion, 52, top cover side plate, 521, first bend, 5211, first connecting face, 5212, second connecting face, 53, support portion, 531, third oil drain hole, 532, connecting groove, 533, first connecting hole, 54, access cover, 541, detected air hole, 55, front plate, 551, second bend, 5511, first bend, 5512, second bend, 56, smoke baffle, 6, back plate, 7, guide fan, 8, outer shroud

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

Detailed Description

Various embodiments of the invention 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 invention. That is, in some embodiments of the invention, 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 invention 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 invention 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 invention.

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

the range hood is disposed above the kitchen range for extracting and discharging oil smoke generated during cooking of food when a user cooks the food. The traditional range hood comprises a wind collecting box assembly and a panel, wherein a wind channel is formed in the wind collecting box assembly, a smoke exhaust fan of the range hood is arranged in the wind channel of the wind collecting box assembly, the wind channel is provided with the smoke exhaust fan and a smoke exhaust wind channel section above the smoke exhaust fan, the part of the wind channel below the smoke exhaust fan is a wind collecting cavity, a wind box air inlet communicated with the wind collecting cavity is further formed in a front side plate of the wind collecting box assembly, a panel air inlet is formed in the panel, the panel is connected with a front side plate of the range hood and is communicated with the wind box air inlet, the smoke exhaust fan is started when the range hood works, smoke generated in the cooking process is extracted, the smoke enters the wind box air inlet through the panel air inlet and then enters the wind channel of the wind collecting box assembly, and waste oil firstly enters the wind collecting cavity and then is discharged out of the wind channel of the wind collecting box assembly through the smoke exhaust wind channel section under the action of the smoke exhaust fan. In the long-term working process of the range hood, waste oil in the oil smoke can be collected, the oil smoke collected in the smoke exhaust fan can drop downwards along an oil drop hole on the smoke exhaust fan and is collected on a bellows bottom plate of the air collecting box assembly, part of the oil smoke can be collected on the inner wall of the air collecting box assembly and flows towards the bellows bottom plate along the inner wall of the air collecting box assembly, as the front side plate of the air collecting box assembly is provided with the bellows air inlet, waste oil flowing through the bellows air inlet along the front side plate of the air collecting box assembly flows towards the panel air inlet through the bellows air inlet and then flows out along the panel air inlet and flows downwards along the appearance surface of the panel, and finally drops on a cooking bench, because how to avoid the waste oil collected in an air flue of the air collecting box assembly from flowing towards the outer side of the panel is a technical problem which is solved continuously.

The invention relates to a wind collecting box assembly, which is designed and developed for solving the problems that part of waste oil in the wind collecting box assembly is collected by a front side plate and then enters a panel air inlet through a wind box air inlet, and then flows out of the panel through the panel and the air inlet. Referring to fig. 1 to 3, the wind collecting box assembly of the present invention includes a front side plate 11 and a vertically disposed rear plate 14, the front side plate 11 includes an inclined section 111 and a vertical section 112 disposed at an upper portion of a front surface, a long-strip wind box air inlet 1111 is horizontally disposed at a lower portion of the inclined section 111, a smoke exhaust fan 2 is disposed in a portion of the wind collecting box assembly aligned with the vertical section 112, and a wind guiding oil baffle 3 is disposed between the smoke exhaust fan 2 and the wind box air inlet 1111. That is, the vertical surface section 112 of the front side plate 11 and the vertical surface section 112 of the rear plate 14 are aligned to form a smoke exhaust duct section of the air collecting box assembly, the smoke exhaust fan 2 is arranged in the smoke exhaust duct section, the inclined section 111 of the front side plate 11 and the inclined section 111 are aligned to form an air collecting cavity of the air collecting box assembly, the air inlet 1111 of the air box is communicated with the air collecting cavity, and the air guiding oil baffle 3 is arranged in the air collecting cavity and is positioned between the air inlets 1111 of the air box. When the range hood works, the smoke exhaust fan 2 is started, the smoke exhaust fan 2 extracts air in the air collecting cavity and discharges the air, negative pressure is formed in the air collecting cavity, the air inlet 1111 of the air box starts to suck kitchen oil smoke to the air collecting cavity, after the oil smoke enters the air inlet 1111 of the air box, the oil smoke enters the part of the air collecting cavity above the air guide oil baffle 3 through the air guide oil baffle 3, and the oil smoke is discharged along the smoke exhaust air channel section under the action of the smoke exhaust fan 2. After the range hood works for a long time, most waste oil can be collected on the impeller of the smoke exhaust fan 2, then the waste oil drops downwards from the smoke exhaust fan 2 to the air guide oil baffle plate 3, and part of the waste oil can be adsorbed to the inner wall surface of the air collection box assembly, and flows downwards along the inner wall surface of the air collection box assembly when the waste oil is accumulated, and flows to the air guide oil baffle plate 3, and then the waste oil collected on the front side plate 11 of the air collection box assembly drops downwards from the air guide oil baffle plate 3, and cannot flow to the panel air inlet through the air inlet of the air box 1111, so that the waste oil cannot flow out from the panel air inlet and flows downwards along the panel. In addition, when the oil smoke flows to the wind-guiding oil baffle plate 3 through the air inlet 1111 of the air box, the wind-guiding oil baffle plate 3 can guide the flow direction of the oil smoke, so that the oil smoke inclines towards the rear plate 14 of the air box assembly, and the collection of waste oil on the front side plate 11 of the air box assembly can be reduced.

Referring to fig. 1 to 5, in the air collecting box assembly of the present invention, the air guiding and oil blocking plate 3 forms an inclined angle with a high front side and a low rear side, the smoke exhaust fan 2 has an oil dropping hole 21, the air guiding and oil blocking plate 3 is provided with an oil receiving portion 31 at a position vertically corresponding to the oil dropping hole 21 and/or the air inlet 1111 of the air box, one side close to the rear plate 14 is provided with an air guiding portion 32, and the air guiding portion 32 is a plurality of long oval holes which are arranged at intervals and are formed on the air guiding and oil blocking plate 3 and are obliquely arranged. The air guide oil baffle 3 is arranged between the front side plate 11 and the rear side plate 14 of the air collection box assembly, when the oil smoke enters the air collection cavity from the air inlet 1111 of the air collection box and flows to the smoke exhaust air duct section under the action of the smoke exhaust fan 2, the oil smoke can be prevented from being blocked by the air guide oil baffle 3 by arranging the air guide part 32 on the air guide oil baffle 3, and the air guide part 32 is arranged on one side of the air guide oil baffle 3 close to the rear plate 14, so that the oil smoke passing through the air guide part 32 is inclined to the rear plate 14, and the collection amount of the oil smoke on the front side plate 11 of the air collection box assembly can be reduced; the air-guiding and oil-blocking plate 3 forms an inclined angle with a high front side and a low rear side, that is, the height of one end of the air-guiding and oil-blocking plate 3 connected with the front side plate 11 of the air-collecting box assembly is higher than that of one end of the air-guiding and oil-blocking plate connected with the rear plate 14, so that when waste oil drops from the oil dropping hole 21 of the smoke exhaust fan 2 onto the air-guiding and oil-blocking plate 3 or the waste oil flows onto the air-guiding and oil-blocking plate 3 from the inner wall of the front side plate 11 of the air-collecting box assembly, the waste oil can flow from the side with the high position to the side with the low position; the oil receiving portion 31 is provided at a position vertically corresponding to the oil drop hole 21 and the bellows air intake 1111, so that it is ensured that the waste oil dropped from the oil drop hole 21 can be received by the oil receiving portion 31 of the air guide oil baffle 3 without entering the bellows air intake 1111.

Referring to fig. 3, in the wind collecting box assembly of the present invention, a wind guiding strip 33 is formed between two adjacent wind guiding parts 32 on the wind guiding oil baffle 3, and the wind guiding strip 33 includes a base 331 and wind guiding sections 332 integrally formed on two sides of the base 331 and bent upwards by rounded corners; the wind-guiding oil baffle plate 3 is connected with one side of the rear plate 14, and a first oil leakage hole 34 is arranged near the rear plate 14, and the first oil leakage hole 34 is used for enabling oil to flow down along the rear plate 14; the base surface 331 of the air guide strip 33, which is obliquely disposed, connects the oil receiving portion 31 and the first oil drain hole 34. The wind guide sections 332 of the two wind guide strips 33 on both sides of the wind guide portion 32 encircle the long oval holes forming the wind guide portion 32, so that the waste oil flowing down from the oil receiving portion 31 can be prevented from dripping from the wind guide portion 32, so that the waste oil flowing down from the oil receiving portion 31 can only flow along the base surface 331 of the wind guide strip 33 toward one end of the wind guide baffle plate 3 near the rear plate 14 of the wind collecting box assembly, and collect there, and the waste oil collected there drips from the first oil leakage holes 34 provided at the position of the wind guide baffle plate 3 near the rear plate 14 of the wind collecting box assembly and then flows downward along the rear plate 14 of the wind collecting box assembly. The wind-guiding oil baffle 3 is bent at two ends of the front side plate 11 close to the wind collecting box assembly and the rear plate 14 close to the wind collecting box assembly to form an upper connecting part and a lower connecting part, the upper connecting part is connected with the front side plate 11, the lower connecting part is connected with the rear plate 14, and the first oil leakage holes 34 penetrate through part of the lower connecting part, so that waste oil can flow downwards along the rear plate 14 after dropping from the first oil leakage holes 34. In order to avoid that the existence of the wind-guiding oil-blocking plate 3 affects the flow speed of the oil smoke, the area of a plurality of long oval holes forming the wind-guiding parts 32 on the wind-guiding oil-blocking plate 3 is larger than the area of the wind-guiding strips 33 formed between two adjacent wind-guiding parts 32.

Referring to fig. 1 and 2, the left and right sides of the air collecting box assembly of the present invention are air box side plates 12 in sealing connection, a bottom plate 13 with at least one second oil leakage hole 131 is arranged below the air collecting box assembly, and a connection structure 1112 is arranged on the outward side of the inclined section 111 for connecting with a corresponding air port fixing portion of a panel of a range hood. The front side plate 11, the air box side plate 12, the air box bottom plate 13 and the rear plate 14 enclose an air channel in the air box collecting assembly, the parts of the air box side plate 12 and the rear plate 14 corresponding to the vertical surface section 112 and the vertical surface section 112 enclose a smoke exhaust air channel section of the air box collecting assembly, the parts of the air box side plate 12, the air box bottom plate 13 and the rear plate 14 corresponding to the inclined section 111 and the inclined section 111 enclose a wind collecting cavity of the air box collecting assembly, when the range hood works, the smoke exhaust fan 2 is started, the smoke in a kitchen enters the air box air inlet 1111 from the panel air inlet, enters the air collecting cavity through the air box air inlet 1111, then enters the smoke exhaust air channel section through the air guide oil baffle plate 3 under the action of the smoke exhaust fan 2, and is discharged, the waste oil in the smoke is dropped onto the oil receiving part 31 of the air guide oil baffle plate 3 through the oil dropping hole 21 of the smoke exhaust fan 2, the waste oil collected on the front side plate 11 flows down along the front side plate 11 to the oil receiving portion 31 of the air guiding and oil retaining plate 3, the waste oil on the oil receiving portion 31 of the air guiding and oil retaining plate 3 flows toward the base surface 331 of the air guiding strip 33, and is collected along the end of the base surface 331 of the air guiding strip 33 where the air guiding and oil retaining plate 3 is connected with the rear plate 14, finally, the waste oil collected on the rear plate 14 flows down along the rear plate 14 directly to the end of the air guiding and oil retaining plate 3 where the rear plate 14 is connected, then, the waste oil collected from the first oil drain hole 34 drops down along the rear plate 14 of the air collecting and retaining plate 14 and is collected on the bottom plate 13 of the air collecting and retaining plate 13, finally, the air flows out of the air duct of the air collection box assembly along the second oil leakage hole 131 on the air box bottom plate 13. The outside of the inclined section 111 of the front side plate 11 of the air collection box assembly is provided with a connecting structure 1112, which is used for connecting the panel of the range hood with the front side plate 11 of the air collection box assembly, aligning and connecting the panel air inlet on the panel with the air box air inlet 1111, and normally arranging an air inlet fixing part on one side of the panel facing the air collection box assembly, wherein the air inlet fixing part is connected with the connecting structure 1112, so that the panel air inlet is communicated with the air box air inlet 1111, and the joint of the panel air inlet and the air box air inlet 1111 is sealed.

Referring to fig. 1 to 5, in the wind collecting box assembly of the present invention, a rear plate 14 and an inclined section 111 are formed with a wind collecting cavity with a side projection of which the upper part is big and the lower part is small, a wind discharging cavity for arranging a smoke discharging fan 2 is formed between a vertical section 112 and the rear plate 14, a wind box air inlet 1111 is positioned at the lower part of the wind collecting cavity, and the distance between the lower edge of the wind box air inlet 1111 and a wind box bottom plate 13 is 2.5 to 10 cm; one side of the air guide oil baffle 3 is connected with the rear plate 14, and the other side is connected with the front side plate 11. Since the distance from the upper end of the inclined section 111 of the front side plate 11 to the rear plate 14 is greater than the distance from the lower end of the inclined section 111 to the rear plate 14, the projection of the rear plate 14 and the inclined section 111 to the side is a trapezoid, the length of the top edge of the trapezoid is greater than the length of the bottom edge of the trapezoid, the vertical section 12 is vertically arranged, the distances from the upper end and the lower end of the vertical section to the rear plate 14 are equal, the projection of the vertical section 12 to the side is square or rectangular, the chamber between the vertical section 12 and the rear plate 14 is an exhaust cavity, and the part of the wind collecting box component corresponding to the exhaust cavity is a smoke exhaust air channel section. The interval of the lower edge of the air inlet 1111 of the bellows from the bottom plate 13 of the bellows is 2.5 to 10 cm, make the position of the air inlet 1111 of the bellows on the air collecting box assembly as low as possible, when the oil smoke enters the air collecting cavity through the air inlet of the bellows, there is longer distance with the exhaust fan 2, can make some waste oil in the oil smoke get the deposition in the air collecting cavity, and the space between lower edge of the air inlet 1111 of the bellows and bottom plate 13 of the bellows and the space of the connecting piece for the air collecting box assembly and panel of the range hood.

Referring to fig. 1 and 2, a wind box side plate 12 of the wind box assembly of the present invention has a vertical section 121 and an expansion section 122, the vertical section 121 is located at an upper portion of the wind box side plate 12, the expansion section 122 is located at a lower portion of the wind box side plate 12, the expansion section 122 extends to left and right sides, a fan cavity for arranging a smoke exhaust fan 2 is formed between the wind box side plates 12 at the left and right sides, and the fan cavity is communicated with a wind box air inlet 1111. After the oil smoke enters the wind collecting cavity through the wind box air inlet 1111, the expansion section 122 of the wind box side plate 12 flows upwards, passes through the wind guide part 32 of the wind guide oil baffle plate 3 and enters the exhaust cavity, and is discharged out of the exhaust cavity by the exhaust fan 2. The vertical section 121 of the bellows side plate 12 corresponds to the vertical section 112 of the front side plate 11, the expansion section 122 of the bellows side plate 12 corresponds to the inclined section 111 of the front side plate 12, an arc section 123 is further arranged between the vertical section 121 and the expansion section 122, and the arc section 123 enables the connection between the vertical section 121 and the expansion section 122 to be smooth. The shape of one side of the expansion section 122 of the bellows side plate 12, which is close to the inclined section 111 of the front side plate 11, is adapted to the inclined section 111 of the front side plate 11, the two sides of the front side plate 11 are bent back to form a first connecting edge, the front end of the bellows side plate 12 is connected with the first connecting edge, the two sides of the rear plate 14 are bent back to form a second connecting edge, the rear end of the bellows side plate 12 is connected with the second connecting edge of the corresponding side, the edge of the bellows bottom plate 13 is bent upward to form a third connecting edge, and the lower ends of the bellows side plate 12 and the rear plate 14 at the lower end of the front side plate 11 are connected with the third connecting edges of the corresponding side respectively. The bellows bottom plate 13 is integrally bent, the height of the surface of the bellows bottom plate 13 near the rear plate 14 is lower than the surface of the bellows bottom plate 13 near the front plate 11, the second oil leakage holes 131 are formed in the surface of the bellows bottom plate 13 near the rear plate 14, and waste oil left along the rear plate 14 is collected at the side of the bellows bottom plate 13 near the rear plate 14 and then drops through the second oil leakage holes 131.

Referring to fig. 5, in the wind collecting box assembly of the present invention, the wind guiding and oil blocking plate 3 is located at the upper side of the expansion section 122 of the side plate, and is disposed at the center of the wind inlet 1111 of the wind box, and forms a central air flow passing through the wind guiding portions 32 and two side air flows flowing from the left and right sides along the expansion section 122 of the wind box side plate 12 of the left and right sides by the wind guiding and oil blocking plate 3, and the ratio of the width of the wind channel surface of the wind guiding and oil blocking plate 3 at the location thereof is 0.6-1.2 times of the actual size. That is, although the air guide portions 32 are provided in the air guide oil baffle 3, since the air guide strips 33 are formed between the adjacent two air guide portions 32, when the oil smoke passes through the air guide portions 32, the oil smoke blocked by the air guide strips 33 flows from the expansion sections 122 of the windbox side plates 12 on the left and right sides of the windbox assembly, and the air flows along the expansion sections 122 of the windbox side plates 12 on the left and right sides are formed, and the air flow blocked by the air guide oil baffle 3 flows along the expansion sections 122 of the windbox side plates 12, the flow velocity is reduced, and the noise generated in the air collecting chamber by the oil smoke can be reduced. The existence of the wind-guiding oil baffle plate 3 can not only prevent waste oil flowing downwards along the front side plate 11 of the wind-collecting box assembly from entering the wind-collecting box air inlet 1111, but also change the popularity of oil fume entering the wind-collecting cavity of the wind-collecting box assembly, so that when the oil fume enters the wind-collecting cavity of the wind-collecting box assembly, the oil fume tends to face the rear plate 14 of the wind-collecting box assembly, and the width of the wind-guiding oil baffle plate 3 is only 0.5 times larger than the width of the wind channel surface, so that the effect of changing the flow direction of the oil fume is more obvious and effective.

Referring to fig. 5, in the wind collecting box assembly of the present invention, the wind inlet 1111 of the wind collecting box assembly is inclined, the air flow passing through it is opposite to the air guiding portion 32, and the angle between the air guiding portion 32 and the air flow is an obtuse angle. Since the air guide oil baffle 3 forms an inclination angle with a high front side and a low rear side, the air guide portion 32 on the air guide oil baffle 3 also has an inclination angle with a low front side, and the air guide oil baffle 3 is connected with the front side plate 11, and one end of the air guide oil baffle 3 connected with the rear plate 14 is located at the upper portion of the air box air inlet 1111, if the inclination of the air guide oil baffle 3 is large enough, one end of the air guide oil baffle 3 connected with the rear plate 14 is located at the lower end of the air box air inlet 1111 or aligned with the lower end of the air box air inlet 1111, and since the air guide portion 32 on the air guide oil baffle 3 is located at one side of the air guide oil baffle 3 close to the rear plate 14, even if the end of the air guide oil baffle 3 connected with the rear plate 14 is aligned with the lower end of the air box air inlet 1111, the height of the air guide portion 32 is higher than the height of the air box air inlet 1111, the air box air inlet 1111 is inclined, and the air outlet direction of the air box 1111 is made upward, and the air guide portion 32 is located in the flowing direction of the oil smoke flowing out from the air inlet 1111, and the exhaust fan 2 can be increased in efficiency when the oil smoke passes through the air guide portion 32 and the exhaust fan. The oil smoke flowing out of the air box air inlet 1111 and the air guide portion 32 form a right angle, the air flow vertically passes through the air guide portion 32, the air flow passing through the air guide portion 32 is smaller, the oil smoke density is larger, the flowing angle of the air guide portion 32 and the air is obtuse, and the air passing through the uppermost end of the air guide portion 32 can still pass through other parts of the air guide portion 32 in the sinking process.

Referring to fig. 4 and 5, the present invention further relates to a range hood, which includes the above-mentioned air collecting box assembly, and further includes a housing, wherein the air collecting box assembly is disposed in the housing, includes an oil collecting structure, and oil flowing down from the air guiding and oil blocking plate 3 is collected in the oil collecting structure and enters an oil collecting groove of the range hood through an oil drain hole of the range hood. According to the range hood provided by the invention, due to the adoption of the air collecting box assembly, waste oil collected by the air guide oil baffle plate 3 drops through the first oil leakage holes 34 on the air guide oil baffle plate 3 and flows downwards along the rear plate 14 of the air collecting box assembly, finally flows onto the air box bottom plate 13 of the air collecting box assembly, then drops into the oil collecting structure through the second oil leakage holes 131 on the air box bottom plate 13, finally enters the oil collecting groove of the range hood through the oil drain hole of the oil collecting structure, and the oil fume cannot flow out through the air box air inlet 1111 of the air collecting box assembly and flows downwards to the cooking bench along the panel of the range hood, so that the range hood is attractive in appearance, and the sanitary condition of a kitchen can be improved.

Referring to fig. 4 to 13, the range hood of the present invention includes a housing including a panel 4, a top cover 5 and a back plate 6, wherein the panel 4 is provided with a panel air inlet 411 corresponding to a bellows air inlet 1111, and a side of the panel 4 facing the front side plate 11 is provided with an air inlet fixing portion 412 for connecting with a connecting structure 1112; the top cover 5 comprises a top cover body 51, a top cover side plate 52 integrally connected with the left side and the right side of the top cover body 51, and a supporting part 53 connected with the top cover side plate 52 on the left side and the right side, wherein the supporting part 53 is provided with at least one third oil leakage hole 531, and the oil collecting structure comprises the supporting part 53 and the third oil leakage hole 531 arranged on the supporting part 53.

Referring to fig. 11 to 13, in the range hood according to the present invention, a panel 4 is integrally bent, left and right sides of the panel 4 are respectively connected with a top cover side plate 52 at a corresponding side, a lower end of the panel 4 is connected with a supporting portion 53, a horizontally extending strip-shaped panel air inlet 411 is provided in the panel 4, an air inlet fixing portion 412 for connecting a wind collecting box assembly is provided at an inner side of the panel air inlet 411, an upper connecting portion 43 is provided at an upwardly extending end of the panel 4, and at least one elongated through hole 421 is formed at a position close to the upper connecting portion 43 of the panel 4. According to the range hood, the panel 4 is a thin-wall panel with a bent shape, so that the bending performance of the panel 4 is improved, after the air port fixing part 412 is connected with the connecting structure 1112 on the front side plate 11 of the air collecting box assembly, if other parts do not correspond, the panel 4 can be deformed within an acceptable range by properly bending the panel 4, other mounting positions can be corresponding, and other mounting positions can also correspond to each other; and the panel 4 is provided with the horizontally extending strip-shaped panel air inlets 411, so that the bending strength of the panel 4 at the position is reduced, the panel 4 is easier to bend, and the panel 4 is convenient to connect with the top cover side plate 52; the upper connecting portion 43 of the panel 4 is connected with the top cover body 51, and at least one long through hole 421 is formed in the position, close to the upper connecting portion 43, of the panel 4, so that bending strength of the panel 4 at the position can be reduced, and when the upper connecting portion 43 of the panel 4 is connected with the top cover body 51, the bending degree between the position, close to the upper connecting portion 43, of the panel 4 and the upper connecting portion 43 can be adjusted to enable the upper connecting portion 43 to better correspond to the top cover body 51.

Referring to fig. 11 to 13, the panel 4 includes an inclined section 41, a horizontal section 42 and an upper connecting portion 43, the front end of the horizontal section 42 is connected with the upper connecting portion 43, the rear end of the horizontal section 42 is connected with the upper end of the inclined section 41, the lower end of the inclined section 41 is formed with a lower end surface 44 by bending inwards, the left and right sides of the panel 4 between the lower end surface 44 and the upper connecting portion 43 are formed with bending connecting surfaces 45, the bending connecting surfaces 45 are used for connecting a top cover side plate 52, the horizontal section 42 is horizontally arranged, the inclined section 41 is inclined from top to bottom to back, so that the panel 4 is in a bent shape, the panel air inlet 411 is arranged on the inclined section 41 and is positioned at the lower end of the inclined section 41, the panel 411 is arranged along the width direction of the inclined section 41, the strip through hole 421 is positioned on the horizontal section 42, the strip through hole 421 is arranged along the width direction of the horizontal section 42, the horizontal section 42 and the upper connecting portion 43 are connected with a top cover body 51, and after the panel 411 is connected with the top cover 1111 at the front side plate 11 of the air collecting assembly, the panel air inlet 411 is connected with the top cover body through the bending section 42 and the inclined section 42 to the upper connecting portion 43 correspondingly to the upper connecting portion 43 b and the horizontal section 43.

Referring to fig. 5 and 6, in the range hood of the present invention, a plurality of fixing connection portions 413 are disposed on the inner wall surface of the panel 4 along the panel air inlet 411, the air inlet fixing portions 412 are connected by the fixing connection portions 413, the thickness of the plate wall of the air collecting box assembly is greater than that of the panel 4, and the width of the air collecting box assembly at the panel air inlet 411 is smaller than that of the panel 4. When the panel 4 is connected with the air collecting box assembly, an air port fixing part 412 arranged around the panel air inlet 411 on the back surface of the inclined section 41 of the panel 4 is connected with the inclined section 111 of the front side plate 11 of the air collecting box assembly, and the panel air inlet 411 is communicated with the air box air inlet 1111; the tuyere fixing portion 412 is a part independent of the panel 4, the appearance of the panel 4 is not affected by the integral processing of the panel 4, and because the panel 4 is a thin-wall panel, the material is relatively thin and the hardness is relatively small, the tuyere fixing portion 412 and the panel 4 are mutually independent, the tuyere fixing portion 412 can be processed by adopting a material with relatively high strength according to the assembly requirement, and the tuyere fixing portion 412 is connected to one side of the inclined section 41 of the panel 4 facing the air collecting box assembly through a plurality of fixing connection portions 413 on the panel 4; of course, in other embodiments, the tuyere fixing portion 412 may be fixed to the inclined portion 41 of the panel 4 by welding, screwing or screwing, and when the inclined portion 41 of the panel 4 is not provided with the tuyere fixing portion 412, the inclined portion 41 of the panel 4 may also be connected to the inclined portion 111 of the air collecting box assembly by bonding, so that in summary, the connection between the inclined portion 41 of the panel 4 and the inclined portion 111 of the air collecting box assembly needs to be firm, and it is ensured that the soot entering the panel air inlet 411 can only enter the air collecting chamber of the air collecting box assembly through the air collecting box air inlet 1111, but cannot leak from the connection between the panel air inlet 411 and the air collecting box air inlet 1111. When the inclined section 41 of the panel 4 is connected with the inclined section 111 of the air collecting box assembly, the panel 4 is a thin-wall panel, the strength is lower, the wall thickness of the air collecting box assembly needs to be larger than that of the panel 4 in order to prevent the whole range hood from being deformed, and therefore the connection position of the panel 4 can be corresponding to the air collecting box assembly, deformation of the air collecting box assembly in the connection process can be avoided, and the appearance of the range hood is influenced. Furthermore, since the bellows assembly is mounted within the housing, the width of the bellows assembly at the panel inlet 411 is smaller than the width of the panel 4 at that location, i.e., the width of the angled section 111 is no greater than the width of the angled section 41, such that the angled section 41, after connection with the angled section 111 of the bellows assembly, may also be connected on both sides to the roof side panels 52.

Referring to fig. 11 and 12, in the range hood of the present invention, a first bend 46 with an arc-shaped side projection is formed between a panel air inlet 411 and an upper connecting portion 43 on a panel 4, and a long through hole 421 is located between the first bend 46 and the upper connecting portion 43; the elongated through holes 421 are two or three in parallel and sequentially arranged, wherein the central lines of at least two elongated through holes 421 are the same. That is, between the first bending 46 and the inclined section 41 and the horizontal section 42, the inclined section 41 is attached to the inclined section 111 of the air collecting box assembly, and both sides thereof are connected to the top cover side plate 52, the horizontal section 42 and the upper connecting portion 43 are connected to the top cover body 51, after the inclined section 41 is connected to the inclined section 111 and the top cover side plate 52, if the connection between the horizontal section 42 and the upper connecting portion 43 and the top cover body 51 is not over, the connection between the horizontal section 42 and the horizontal section 42 can be made to correspond to the connection between the horizontal section 42 and the upper connecting portion 43 and the top cover body 51 by bending the first bending 46 between the inclined section 41 and the horizontal section 42, thereby improving the bending performance of the panel 4 and improving the appearance of the connected rear panel 4. The elongated through hole 421 of the horizontal segment 42 is disposed along the width direction of the horizontal segment 42 and is close to the upper connecting portion 43, so that the bending strength of the horizontal segment 42 can be reduced, and the horizontal segment 42 can better correspond to the top cover body 51 when being connected with the top cover body 51, so that the upper connecting portion 43 can be connected with the corresponding position of the top cover body 51. The two or three strip through holes 421 are arranged in parallel in sequence and are arranged along the width direction of the horizontal section 42, when the horizontal section 42 is connected with the top cover body 51, the bending strength of the horizontal section 42 can be reduced, the strip through holes 421 correspond to the guiding fans of the range hood, and the guiding fans exhaust air to the lower part of the horizontal section 42 of the panel 4 through the strip through holes 421; when rectangular through hole 421 is three, the central line of two at least rectangular through holes 421 is the same, in the horizontal direction of panel 4 to section 42, three rectangular through holes 421 set gradually to only the clearance department of three rectangular through holes 421 links up, can make panel 4's horizontal to section 42 bending strength reduce like this, makes horizontal to section 42 better be connected with top cap body 51. Of course, when the number of the elongated through holes 421 is two, the two elongated through holes 421 are sequentially arranged along the horizontal segment 42 of the panel 4 and the center lines are the same, so that only the gaps of the two elongated through holes 421 are engaged with each other, and the bending strength of the horizontal segment 42 of the panel 4 can be reduced.

Referring to fig. 13, in the range hood of the present invention, an air duct via hole 511 is formed on the rear side of a top cover body 51, an air collecting box assembly connecting portion 513 connected to the side wall of the air collecting box assembly is formed on the top cover body 51 extending upward at the left and right side edges of the air duct via hole 511, a smoke exhaust duct section of the air collecting box assembly passes through the air duct via hole 511 and is connected to the air collecting box assembly connecting portion 513, an air inlet gap a is formed between the air duct via hole 511 and the outer wall surface of the smoke exhaust duct section, an access hole 512 is further provided on the front side of the air duct via hole 511, an access cover 54 is sealed on the access hole 512, and a detection air hole 541 is provided on the access cover 54. According to the range hood, the access cover 54 is aligned with the electric control cavity b, and the electric control cavity b is internally provided with the device for detecting the air quality, other electric devices and the guide fan 7, and when the electric devices need to be maintained, the electric control cavity b can be opened by opening the access cover 54, so that the electric devices are convenient to maintain; in addition, the device for detecting air quality comprises a guide fan 7 and a detection piece, when the range hood works, the guide fan 7 can extract air in a kitchen to the detection piece, so that the detection piece can detect the air quality in the kitchen, when the guide fan 7 extracts the air in the kitchen, the air enters an air inlet of the guide fan 7 through a detection air hole 541 in an access cover 54 and is blown to the detection piece, the air is discharged after being detected by the detection piece, and when the detection piece detects that the air quality is unqualified, the wind power of a fan main body of the range hood can be enhanced, so that the extraction of the range hood on the oil fume is strong. The air inlet gap a and the detection air hole 541 are both communicated with the electric control cavity b, the guide fan 7 is started when the range hood works, the guide fan 7 is used for extracting air in the electric control cavity b and discharging the air in the electric control cavity b, negative pressure is formed in the electric control cavity b after the air in the electric control cavity b is extracted by the guide fan 7, the air in a kitchen can enter the electric control cavity b through the air inlet gap a and the detection air hole 541, the air in the electric control cavity b is timely supplemented, and meanwhile, the quality of the air entering the air inlet gap a and the detection air hole 541 just represents the real-time air quality in the kitchen when the range hood works.

Referring to fig. 7 to 10, the blower 7 is guided to exhaust air outwards through the long through holes 421 provided on the panel 4; when the guiding fan 7 operates, a negative pressure area is formed in the electric control cavity b, and external air enters the electric control cavity b through the detection air hole 541 and the air inlet gap a. When the range hood works, the fan main body in the air collecting box assembly is started, oil smoke generated in the cooking process of a user enters the air inlet 1111 of the air collecting box through the air inlet of the panel and is discharged, as the fan main body extracts the oil smoke, a negative pressure area is formed near the air inlet of the panel, the fan 7 is guided to extract air in the electric control cavity b and is discharged through the long strip through hole 421 on the panel, the other negative pressure area is formed in the electric control cavity b, external air enters the electric control cavity b through the detection air hole 541 and the air inlet gap a to be detected by a detection piece, meanwhile, the air is discharged downwards through the long strip through hole 421 on the panel, the oil smoke generated in the cooking process of the user is impacted downwards by the air flow of the discharged air, and the oil smoke generated in the cooking process is prevented from continuously rising and being inhaled by the user. When the range hood works, waste oil entering the air duct of the air collecting box assembly is collected in the oil receiving part 31 of the air guiding and oil blocking plate 3, then flows along one end of the air guiding strip 33, which is connected with the rear plate 14, finally drops through the first oil leakage holes 34 on the air guiding and oil blocking plate 3, flows downwards along the rear plate 14, finally flows onto the air box bottom plate 13, then drops to the supporting part 53 through the second oil leakage holes 131 on the air box bottom plate 13, and finally drops into the oil collecting groove through the third oil leakage holes 531 on the supporting part 53. The support portion 53 and the third oil drain hole 531 provided on the support portion 53 form an oil collecting structure of the range hood.

Referring to fig. 5, 7, 9 and 13, the front side of the hood side plate 52 of the present invention is inclined from top to bottom to the rear side and forms a plate-like structure with a large top and a small bottom. The top end of the top cover side plate 52 has a larger width than the lower end thereof, that is, the front side of the top cover side plate 52, which is close to the user, is an inclined surface, and the distance from the upper end of the inclined surface to the rear end of the range hood is larger than the distance from the lower end of the inclined surface to the rear end of the range hood. Generally, the range between the top cover side plates 52 on the left side and the right side of the top cover assembly is aligned with the kitchen range and adapted to the kitchen range, and the low-level oil smoke flows upwards under the action of the heat emitted by the kitchen ware in the cooking process of a user, at this time, the condensation degree of the oil smoke is relatively high, the oil smoke is not easy to disperse, and the oil smoke can be slowly dispersed in the upward flowing process, so that a baffle is required to limit the air flow, the oil smoke is prevented from being diffused, the top cover side plates 52 form a plate-shaped structure with large top and small bottom, the operation space of the user is not influenced, the width of the top cover side plates 52 is enlarged when the oil smoke starts to be diffused, and the oil smoke can be prevented from overflowing from the space between the two top cover side plates 52. The front side of the top cover body 51 extends downward to form a front plate 55 having an outer surface, and the left and right ends of the front plate 55 extend toward the top cover side plate 52 on the corresponding side and engage with the top cover side plate 52 on the corresponding side. That is, the front plate 55 is a U-shape, both ends of the U-shape are connected to the roof side plate 52 on the corresponding side, and the roof body 51, the roof side plate 52 and the front plate 55 are integrally formed.

Referring to fig. 7 to 13, the top cover side plate 52 is turned towards one side of the user to form a first folded edge 521 with an L-shaped cross section, the first folded edge 521 includes a first connection surface 5211 connected with the top cover side plate 52 and a second connection surface 5212 connected with the first connection surface 5211, the first connection surface 5211 is perpendicular to the top cover side plate 52, the second connection surface 5212 is parallel to the top cover side plate 52, the second connection surface 5212 of the first folded edge 521 parallel to the top cover side plate 52 is used for connecting with the bending connection surfaces 45 on two sides of the inclined section 41, and the first folded edge 521 and the second folded edge can be connected through screws or can be bonded through an adhesive layer; the front plate 55 is folded to form a second folded edge 551 with an L-shaped cross section, the second folded edge 551 comprises a first folded surface 5511 connected with the front plate 55 and a second folded surface 5512 connected with the first folded surface 5511, the first folded surface 5511 is perpendicular to the front plate 55, the second folded surface 5512 is parallel to the front plate 55, the folded connection surfaces 45 on two sides of the horizontal section 42 are connected with the second folded surfaces 5512 in the parts of the second folded edge 551 on two sides of the front plate 55, the upper connection part 43 comprises a buckle 431 and a connecting piece 432 arranged at the front end of the horizontal section 42, a buckle hole corresponding to the buckle 431 is formed in the first folded surface 5511 of the part of the second folded edge 551 on the front plate 55, the first folded surface 5511 of the part of the second folded edge 551 on the front plate 55 is connected with the connecting piece 432 through a screw, when the horizontal section 42 is connected with the front plate 55, the folded connection surfaces 45 on two sides of the horizontal section 42 are connected with the second folded surfaces 5512 in the parts of the two sides of the front plate 55 through the screw, and can also be connected through the screw, and the second folded connection surfaces 431 can be connected with the connecting piece 432 through the adhesive layer and the second folded surface by stretching into the second folded surface 431 on the front plate 55 through the second folded surface 5511 on the part of the horizontal section 55. The supporting portion 53 is provided with a connection groove 532 and first connection holes 533, each first connection hole 533 is aligned with one connection groove 532, the lower end surface 44 of the panel 4 is provided with a projection 441 corresponding to the connection groove 532 and a second connection hole 442 corresponding to the first connection hole 533, and when the lower end surface 44 of the panel 4 is connected to the supporting portion 53, the projection 441 is engaged into the connection groove 532, and then the first connection hole 533 and the second connection hole 442 are fixed by screws passing through them. The top cover 5 further comprises smoke baffle plates 56 arranged on the left side and the right side of the top cover body 51, the smoke baffle plates 56 are connected with the first connecting surface 5211, the part between the two smoke baffle plates 56 is a lampblack space, and meanwhile, in order to enable a user to have better experience, the smoke baffle plates 56 are made of transparent glass materials.

Referring to fig. 4, 5 and 9, the range hood of the present invention further includes a peripheral plate 8, the top cover body 51 is provided with a peripheral plate connecting portion 514 around the edge of the air duct via hole 511, the lower end of the peripheral plate 8 is connected with the peripheral plate connecting portion 514, two free ends of the peripheral plate 8 are connected with the air collecting box assembly, a C-shaped thin air inlet channel C is formed between the peripheral plate 8 and the outer wall surface of the exhaust air channel section, and the thin air inlet channel C is communicated with the air outside the range hood and the electric control cavity b. In the illustrated embodiment, the peripheral plate connecting portion 514 is a groove provided along the air duct via hole 511, the groove is provided around the air duct via hole 511, the lower end of the peripheral plate 8 is disposed in the groove, the free end of the peripheral plate 8 is provided with a connecting surface parallel to the rear plate 14 of the air collecting box assembly, and the connecting surface is connected with the rear plate 14 of the air collecting box assembly. According to the range hood, since the smoke exhaust duct section of the air collecting box assembly is arranged in the duct through hole 511 and extends out of the duct through hole 511, noise is generated in the smoke exhaust duct section when smoke is exhausted from the smoke exhaust duct section, heat of the smoke is conducted to the wall surface of the smoke exhaust duct section, the peripheral plate 8 surrounds the front side and the left side and the right side of the smoke exhaust duct section, a C-shaped thin air inlet channel C is formed between the peripheral plate and the outer wall surface of the smoke exhaust duct section, external air enters the thin air inlet channel C to form a layer, the noise generated by the smoke flow of the smoke exhaust duct section can be isolated, and the heat conduction to the outside of the wall surface of the smoke exhaust duct section can be reduced due to the existence of the air layer.

The foregoing description of the preferred embodiments of the invention 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 invention.

Claims (10)

1. An album of bellows subassembly for lampblack absorber, its characterized in that: including preceding curb plate (11) and back plate (14) of vertical setting, preceding curb plate (11) are including setting up incline section (111) and vertical section (112) of positive upper portion anteversion the lower part level of incline section (111) is provided with rectangular bellows air intake (1111) collect bellows subassembly with be provided with in the portion that vertical section (112) are aligned exhaust fan (2) with be provided with wind-guiding oil baffle (3) between bellows air intake (1111).

2. The wind collecting box assembly according to claim 1, wherein the wind guiding oil baffle plate (3) forms an inclined angle with a high front side and a low rear side, the smoke exhaust fan (2) is provided with an oil dropping hole (21), the wind guiding oil baffle plate (3) is provided with an oil receiving part (31) at a position vertically corresponding to the oil dropping hole (21) and/or a wind box air inlet (1111), one side close to the rear plate (14) is provided with a wind guiding part (32), and the wind guiding part (32) is a plurality of long oval Kong Daofeng parts (32) wind guiding strips (33) which are arranged at intervals and are arranged on the wind guiding oil baffle plate (3) which are obliquely arranged.

3. The wind collecting box assembly according to claim 2, wherein a wind guiding strip (33) is formed between two adjacent wind guiding parts (32), and the wind guiding strip (33) comprises a base surface (331) and wind guiding sections (332) which are integrally formed at two sides of the base surface (331) and bent upwards by round corners; the air guide oil baffle (3) is connected with one side of the rear plate (14), a first oil leakage hole (34) is formed near the rear plate (14), and the first oil leakage hole (34) is used for enabling oil to flow down along the rear plate (14); the base surface (331) of the air guide strip (33) is obliquely arranged and is connected with the oil receiving part (31) and the first oil leakage hole (34).

4. A bellows assembly according to any one of claims 1 to 3, wherein the bellows assembly is provided with bellows side plates (12) on both sides thereof for sealing connection, a bellows bottom plate (13) provided with at least one second oil drain hole (131) is provided below the bellows side plates, and a connection structure (1112) is provided on an outward side of the inclined section (111) for connecting with a corresponding tuyere fixing portion of a panel of a range hood.

5. The wind collecting box assembly according to claim 4, wherein the rear plate (14) and the inclined section (111) form a wind collecting cavity with a side projection of which the upper part is big end down, an exhaust cavity for arranging a smoke exhaust fan (2) is formed between the vertical section (112) and the rear plate (14), the wind collecting box air inlet (1111) is positioned at the lower part of the wind collecting cavity, and the distance between the lower edge of the wind collecting box air inlet (1111) and the wind box bottom plate (13) is 2.5-10 cm; one side of the air guide oil baffle plate (3) is connected with the rear plate (14), and the other side of the air guide oil baffle plate is connected with the front side plate (11).

6. The wind collecting box assembly according to claim 4, wherein the wind collecting box side plate (12) of the wind collecting box assembly is provided with a vertical section (121) and an expansion section (122), the vertical section (121) is located at the upper part of the wind collecting box side plate (12), the expansion section (122) is located at the lower part of the wind collecting box side plate (12), the expansion section (122) extends to the left side and the right side, a fan cavity for arranging a smoke exhaust fan (2) is formed between the wind collecting box side plates (12) at the left side and the right side, and the fan cavity is communicated with the wind collecting box air inlet (1111).

7. The wind collecting box assembly according to claim 6, wherein the wind guiding oil baffle plate (3) is located at the upper side of the expansion section (122) of the side plate, and is arranged at the center position of the wind box air inlet (1111), and is formed with a central air flow passing through a plurality of wind guiding parts (32) and two side air flows flowing from the left side and the right side along the expansion section (122) of the wind box side plate (12) at the left side and the right side, and the ratio of the width of the wind channel surface of the wind guiding oil baffle plate (3) at the position where the wind guiding oil baffle plate is located is 0.6-1.2 times of the actual size.

8. The air collection box assembly according to claim 4, wherein the air collection box air inlet (1111) of the air collection box assembly is obliquely arranged, the air flow passing through the air collection box assembly is opposite to the air guiding portion (32), and the angle of the air guiding portion (32) and the air flow is an obtuse angle.

9. A range hood comprising a bellows assembly according to any one of claims 1 to 8, and further comprising a housing, wherein the bellows assembly is disposed within the housing and comprises an oil collection structure in which oil flowing down from the air-guiding and oil-retaining plate (3) is collected and passed through an oil drain hole into an oil collection sump.

10. The range hood according to claim 9, wherein the housing comprises a panel (4), a top cover (5) and a back plate (6), a panel air inlet (411) corresponding to a bellows air inlet (1111) is provided on the panel (4), and an air inlet fixing portion (412) for connecting with the connecting structure (1112) is provided on a side of the panel (4) facing the front side plate (11); the top cover (5) comprises a top cover body (51), a top cover side plate (52) integrally connected with the left side and the right side of the top cover body (51) and a supporting portion (53) connected with the left side and the right side of the top cover side plate (52), wherein at least one third oil leakage hole (531) is formed in the supporting portion (53), and the oil collecting structure comprises the supporting portion (53) and the third oil leakage hole (531) formed in the supporting portion (53).