CN213178508U - Lead cigarette subassembly and lampblack absorber - Google Patents

Abstract

The utility model provides a lead cigarette subassembly and lampblack absorber relates to kitchen appliances's technical field. A smoke guide assembly comprises a smoke guide cover, wherein a smoke outlet is formed in the middle of the smoke guide cover and is suitable for being communicated with a smoke collecting cavity of a range hood; first smoke inlet is seted up to the front portion of leading the petticoat pipe, and the second smoke inlet is seted up to the left part, and the third smoke inlet is seted up to the right part, just first smoke inlet's area is not equal to the area of second smoke inlet or the area of third smoke inlet. A range hood includes above-mentioned smoke guide assembly. The utility model discloses the lampblack absorber adsorption efficiency among the prior art is not high, technical problem such as oil smoke escape easily appears has been alleviated.

Description

Lead cigarette subassembly and lampblack absorber

Technical Field

The utility model belongs to the technical field of the kitchen appliance technique and specifically relates to a lead cigarette subassembly and lampblack absorber.

Background

At present, some range hoods on the market are easy to escape when in use, so that the air environment in a kitchen is influenced, the experience of a user is influenced for a long time, and the physical and mental health of the user is influenced. In order to solve the problem of oil smoke escape, the conventional range hood is provided with structures such as a smoke baffle plate, a negative pressure area is formed by the smoke baffle plate and the smoke collection cavity, so that the oil smoke can be sucked into the smoke collection cavity from the periphery of the smoke baffle plate, and the oil smoke suction effect is improved.

However, when oil smoke generated in the cooking process enters a negative pressure area around the smoke baffle, the mass concentration of each part is different, and the existing range hood is lack of a structural design aiming at the oil smoke with different mass concentrations, so that the adsorption efficiency of the oil smoke is not high, and the problem of oil smoke escape easily occurs.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lead cigarette subassembly and lampblack absorber to alleviate the lampblack absorber adsorption efficiency among the prior art not high, the easy technical problem such as oil smoke escape of appearing.

The utility model provides a smoke guide component, which comprises a smoke guide cover, wherein the middle part of the smoke guide cover is provided with a smoke outlet, and the smoke outlet is suitable for being communicated with a smoke collecting cavity of a range hood;

first smoke inlet is seted up to the front portion of leading the petticoat pipe, and the second smoke inlet is seted up to the left part, and the third smoke inlet is seted up to the right part, just first smoke inlet's area is not equal to the area of second smoke inlet or the area of third smoke inlet.

Furthermore, the smoke guide cover comprises a front side plate, a left side plate, a rear side plate and a right side plate, the front side plate, the left side plate, the rear side plate and the right side plate are sequentially connected end to form a closed ring, and the cross-sectional area of the closed ring is gradually reduced from one end far away from the smoke collection cavity to one end close to the smoke collection cavity;

the first smoke inlet is formed in the front side plate, the second smoke inlet is formed in the left side plate, and the third smoke inlet is formed in the right side plate.

Furthermore, the main end of the closed ring is suitable for being connected with a flow guide piece, the smoke guide cover and the flow guide piece are enclosed to form a smoke inlet flow channel, and the first smoke inlet, the second smoke inlet, the third smoke inlet and the smoke outlet are communicated with the smoke inlet flow channel.

Further, the included angle between the front side plate and the upper end face of the flow guide piece ranges from 0 degree to 20 degrees;

and/or the included angle between the left side plate and the upper end face of the flow guide piece ranges from 0 degree to 20 degrees;

and/or the included angle between the rear side plate and the upper end face of the flow guide piece ranges from 0 degree to 20 degrees;

and/or the included angle between the right side plate and the upper end face of the flow guide piece ranges from 0 degree to 20 degrees.

Further, the included angles between the front side plate, the left side plate, the rear side plate and the right side plate and the upper end face of the flow guide piece are all 7 degrees.

Further, at least one of the smoke inlet on the front side plate, the left side plate and the right side plate is a mesh-shaped opening to form a protective net;

or at least one of the first smoke inlet, the second smoke inlet and the third smoke inlet is covered with a protective net.

Further, the smoke guide assembly further comprises a fixing frame, the top of the fixing frame is suitable for being connected with a smoke collecting hood of the range hood, and the bottom of the fixing frame is suitable for being connected with the smoke guide hood or integrally formed.

Furthermore, the smoke outlet is located at the small end of the closed ring, a convex edge surrounding the smoke outlet is arranged at the small end of the closed ring, and the convex edge is fixedly connected with the fixed frame or detachably connected with the fixed frame.

Further, the ratio of the area of the first smoke inlet to the area of the second smoke inlet ranges from 0.6 to 2.5;

and/or the ratio of the area of the first smoke inlet to the area of the third smoke inlet is in the range of 0.6 to 2.5.

Further, the ratio of the area of the first smoke inlet to the area of the second smoke inlet is 0.82;

and/or the ratio of the area of the first smoke inlet to the area of the third smoke inlet is 0.82.

Further, the first smoke inlet is arranged on the left side area and the right side area of the front part of the smoke guide hood, so that a first closed area is formed in the middle of the front part of the smoke guide hood;

and/or a second closed area is formed at the rear upper side of the left part of the smoke guide hood;

and/or a third closed area is formed at the rear upper side of the right part of the smoke guide hood.

Furthermore, the first smoke inlet positioned in the left side area and the first smoke inlet positioned in the right side area of the front part of the smoke guide hood are both in a trapezoid-like shape;

and/or the second smoke inlet is in a trapezoid-like shape;

and/or the third smoke inlet is in a trapezoid-like shape.

Furthermore, the first smoke inlet, the second smoke inlet and the third smoke inlet are formed by splicing a plurality of strip holes.

The utility model also provides a range hood, lead the cigarette subassembly including the aforesaid.

Has the advantages that:

the utility model provides a pair of lead cigarette subassembly includes the guide smoke cover, and the different regions of this guide smoke cover set up into the mouth respectively, specifically do, and the front portion is seted up first into the mouth, and the second is seted up in the left part and is advanced the mouth, and the third is seted up in the right part and is advanced the mouth area inequality to, first into mouth and second, perhaps first into mouth and the area inequality of third intake mouth. Based on the special design of above-mentioned smoke inlet, can make the flue gas provide under the prerequisite of same flow at the entering spiral case system, carry out flow distribution according to the flue gas at the mass concentration difference that different regional distribute, especially between leading the anterior region of petticoat pipe and left part region, or carry out flow distribution between leading the anterior region of petticoat pipe and right part region, promoted smoking efficiency greatly, reduced to a certain extent because partial regional absorption untimely leads to partial flue gas escape rate often, guaranteed the smoking effect of lampblack absorber.

The utility model provides a pair of range hood, including the aforesaid lead the cigarette subassembly, so, technical advantage and effect that this range hood reached include the aforesaid equally and lead technical advantage and effect that the cigarette subassembly reached, and here is no longer repeated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is an exploded schematic view of a smoke guide assembly and a flow guide member provided in an embodiment of the present invention;

fig. 2 is a first perspective view of a smoke guide hood according to an embodiment of the present invention;

fig. 3 is a second perspective view of a smoke guide hood according to an embodiment of the present invention;

fig. 4 is the embodiment of the utility model provides a schematic diagram of lampblack absorber.

Icon:

100-a smoke guide hood; 110-front side panel; 120-left side panel; 130-right side plate; 140-convex edge; 150-rear side panel;

200-a fixing frame;

300-a flow guide member;

400-smoke collecting hood;

500-a fan;

600-a housing;

a-a first smoke inlet; b-a second smoke inlet; c-a third smoke inlet; d-a smoke outlet; e-a first enclosed area; f-a second enclosed area; g-a third enclosed area;

p-smoke collecting cavity; q-smoke inlet channel.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 4, the present embodiment provides a range hood, including a housing 600, a fan 500 disposed inside the housing 600, and a smoke collection cover 400 disposed at the bottom of the housing 600, wherein a flue is formed inside both the housing 600 and the smoke collection cover 400, and the fan 500 provides power for smoke discharge; in consideration of the smoke collection problem of the whole range hood, in the embodiment, the smoke guide assembly is arranged at the lower part of the smoke collection cover 400, specifically, the smoke guide assembly comprises the smoke guide cover 100, the middle part of the smoke guide cover 100 is provided with the smoke outlet d, and the smoke outlet d is communicated with the smoke collection cavity P of the smoke collection cover 400, so that smoke is guided into the smoke collection cavity P through the smoke outlet d and is finally discharged to the outside by the fan 500; further, the front part of the smoke guiding hood 100 is provided with a first smoke inlet a, the left part is provided with a second smoke inlet b, the right part is provided with a third smoke inlet c, and smoke generated by cooking can be sucked from multiple directions of the smoke guiding hood 100 through the first smoke inlet a, the second smoke inlet b and the third smoke inlet c; however, based on the analysis of the concentration distribution state of the cooking fume around the fume guiding hood 100, the fume concentrations at different positions of the fume guiding hood 100 are different, and therefore, in order to specifically absorb the fume with different concentrations in each region, in the present embodiment, the opening area of the first fume inlet a at the front of the fume guiding hood 100 is designed to be unequal to the opening area of the second fume inlet b at the left of the fume guiding hood 100, or the opening area of the second fume inlet b at the right of the fume guiding hood 100 is designed to be unequal, so when the fume reaches around the fume guiding hood 100, because the opening areas of the fume inlets at various positions of the fume guiding hood 100 are different, the flow distribution of the fume can be realized, and the fume absorption efficiency can be improved. For example, when the smoke concentration of the front portion of the smoke guide hood 100 is large and the smoke concentrations of the left and right portions are small through CAE analysis, the opening area of the first smoke inlet a may be designed to be the largest, and the opening areas of the second smoke inlet b and the third smoke inlet c may be designed to be small; also, when the smoke concentration of the front portion of the smoke guide hood 100 is small and the smoke concentrations of the left and right portions are large through CAE analysis, the opening area of the first smoke inlet a may be designed to be the minimum, and the opening areas of the second smoke inlet b and the third smoke inlet c may be designed to be large. Through the difference of the arrangement areas of the smoke inlets, the smoke is absorbed pertinently, so that the distribution and absorption efficiency of the smoke is greatly improved, and the smoke escape is reduced.

It should be noted here that, considering that the smoke collecting hood 400 of the range hood is almost designed in a bilateral symmetry manner, the smoke guide hood 100 in the present embodiment is preferably arranged in a bilateral symmetry manner, specifically, the opening area of the second smoke inlet b may be the same as the opening area of the third smoke inlet c, and the opening positions of the second smoke inlet b and the third smoke inlet c may be bilateral symmetry; of course, in other embodiments, the opening area of the second smoke inlet b and the opening area of the third smoke inlet c may be different, and the opening positions of the second smoke inlet b and the third smoke inlet c may not be left-right symmetrical, and may be specifically designed according to actual situations.

Based on the special design of above-mentioned smoke inlet, can make the flue gas provide under the prerequisite of same flow at the entering spiral case system, carry out flow distribution according to the flue gas at the mass concentration difference that different regional distribute, especially between leading the anterior region of petticoat pipe 100 and left part region, or carry out flow distribution between leading the anterior region of petticoat pipe 100 and right part region, promoted smoking efficiency greatly, reduced to a certain extent because partial region adsorbs and leads to partial flue gas escape rate often untimely, guaranteed the smoking effect of lampblack absorber.

As a more preferred embodiment, the smoke guiding cover 100 includes a front side plate 110, a left side plate 120, a rear side plate 150 and a right side plate 130, wherein the front side plate 110, the left side plate 120, the rear side plate 150 and the right side plate 130 are sequentially enclosed end to form a closed ring, the cross-sectional area of the closed ring is gradually reduced from one end far away from the smoke collecting cavity P to one end close to the smoke collecting cavity P, the first smoke inlet a is opened on the front side plate 110, the second smoke inlet b is opened on the left side plate 120, and the third smoke inlet c is opened on the right side plate 130.

As particularly shown in fig. 1 to 3, the hood 100 is generally funnel-shaped, that is, the hood 100 is gradually flared from top to bottom when the hood 100 is normally installed under the hood 400; in consideration of the overall shape of the range hood, it is preferable in the present embodiment that the smoke guide hood 100 is designed in a funnel shape having a trapezoidal longitudinal section. Further, set up first smoke inlet a on preceding curb plate 110, set up second smoke inlet b on the left side board 120, set up third smoke inlet c on the right side board 130, when the wall was installed to the lampblack absorber, rear side board 150 was closer with the wall distance, and the difficult space that flows between rear side board 150 and the wall of flue gas to generally not set up the smoke inlet on rear side board 150, of course, according to actual demand, also can set up the smoke inlet on rear side board 150.

Based on the above design, the smoke generated by cooking can enter the smoke guide hood 100 from the first smoke inlet a of the front side plate 110, the second smoke inlet b of the left side plate 120 and the third smoke inlet c of the right side plate 130, respectively, and is subject to the lower end flaring and the upper end necking of the smoke guide hood 100 to be collected and finally flows into the smoke guide hood 400 through the smoke outlet d at the upper end of the smoke guide hood 100.

Further, in order to ensure that the flue gas can flow into the smoke collecting cover 400 more smoothly after entering the smoke guiding cover 100, the flow guiding member 300 is disposed below the smoke guiding cover 100 in this embodiment, and the smoke inlet Q is defined between the flow guiding member 300 and the smoke guiding cover 100, and the first smoke inlet a, the second smoke inlet b, the third smoke inlet c and the smoke outlet d are all communicated with the smoke inlet Q, so that the flue gas sucked through the first smoke inlet a, the second smoke inlet b and the third smoke inlet c can directly flow to the smoke outlet d smoothly along the smoke inlet Q, thereby effectively relieving the flow efficiency of the flue gas caused by disordered flow inside the smoke guiding cover 100.

In order to ensure that a large enough space is provided between the smoke guide hood 100 and the flow guide 300 to accommodate and channel smoke, in this embodiment, it is preferable that an angle between the front side plate 110 of the smoke guide hood 100 and the upper end surface of the flow guide 300 is designed to be 0 ° to 20 °, specifically including 1 °, 5 °, 7 °, 10 °, 15 °, 20 °, and the like, an angle between the left side plate 120 of the smoke guide hood 100 and the upper end surface of the flow guide 300 is designed to be 0 ° to 20 °, specifically including 1 °, 5 °, 7 °, 10 °, 15 °, 20 °, and the like, and an angle between the right side plate 130 of the smoke guide hood 100 and the upper end surface of the flow guide 300 is designed to be 0 ° to 20 °, specifically including 1 °, 5 °, 7 °, 10 °, 15 °, 20 °, and the like; thereby, wedge-shaped spaces are formed between the front side plate 110 and the upper end face, between the left side plate 120 and the upper end face, and between the right side plate 130 and the upper end face, so that when smoke enters the wedge-shaped spaces from the first smoke inlet a, the second smoke inlet b and the third smoke inlet c, the smoke is subjected to dredging effect of the wedge-shaped spaces, the flow efficiency of the smoke is further improved, and the smoke can smoothly flow to the smoke outlet d.

Considering the overall design of the range hood and the flow efficiency of the smoke in the smoke guide hood 100 comprehensively, in this embodiment, the included angle between the front side plate 110 and the upper end surface, the included angle between the left side plate 120 and the upper end surface, and the included angle between the right side plate 130 and the upper end surface are all preferably designed to be 7 °, so as to achieve the above technical effects at the same time.

It should be noted that the flow guiding member 300 herein can serve as a baffle plate to guide the flue gas, and the flue gas can be respectively guided to the front part, the left part and the right part of the smoke guiding cover 100 by the smoke guiding member in the rising process of the flue gas, so as to improve the flow efficiency of the flue gas and effectively alleviate the problem of escape when the flue gas is not guided in time; and, this water conservancy diversion spare 300 is gone up to have seted up into the mouth equally, preferably, sets up in the middle part of water conservancy diversion spare 300, and this mouth of advancing also communicates with into cigarette runner Q, so, can also follow the mouth of advancing in the middle part of water conservancy diversion spare 300 and adsorb the flue gas to promote the adsorption efficiency of flue gas.

As a more preferable embodiment, the first smoke inlet a on the front side plate 110 is designed as a mesh opening to form a protective mesh, so that the mesh opening can filter smoke and can also play a role in protection to prevent external impurities from entering the smoke guide hood 100; in other embodiments, a layer of protective net can be laid at the first smoke inlet a, and the protective net can also play a role in filtering and protecting. Also, both the left and right side panels 120 and 130 may be designed with reference to the above-described protection net on the front side panel 110, thereby being capable of performing a filtering and shielding function from various aspects of the hood 100.

In addition, because the smoke inlets on the side plates of the smoke guiding hood 100 are all opened towards the smoke collecting hood 400, namely, are opened upwards or obliquely upwards, the smoke inlets and even the protective nets on the side plates are hidden, and the protective nets which are adhered with oil stains are not exposed in the visual field range of users, so that the oil stains are not visible.

As a preferred embodiment, the smoke guide assembly further comprises a fixing frame 200, the top of the fixing frame 200 is used for being installed at the bottom of the smoke collecting hood 400, and the smoke guide hood 100 is installed at the bottom of the fixing frame 200, so that the fixing frame 200 is used for installing the smoke guide hood 100 below the smoke collecting hood 400, and the installation stability is ensured.

Preferably, the fixing frame 200 is a ring-shaped body, in order to ensure the stability and the sealing performance of the installation between the fixing frame 200 and the smoke guide hood 100, in this embodiment, a circle of convex edges 140 are disposed at the side wall of the smoke outlet d of the smoke guide hood 100, and the bottom end of the fixing frame 200 can be inserted into the convex edges 140, and then fixed by fasteners. Specifically, the bottom end of the fixing frame 200 may be inserted into the inner side of the convex edge 140, or the bottom end of the fixing frame 200 may be sleeved on the outer side of the convex edge 140, and then may be fixed by fasteners such as a buckle or a screw, thereby achieving detachable connection and facilitating the disassembly and assembly of the smoke guide cover 100; of course, fixed connections, such as welding, riveting, bonding, etc., may also be used. In addition, the holder 200 may be integrally formed with the hood 100.

Based on the CAE analysis result, the concentrations of the flue gas at the side parts of the smoke guide hood 100 are different, and a user family generally uses a double-burner stove, for such a situation, the concentrations of the flue gas at the left side and the right side of the general range hood are relatively large, the concentration of the flue gas at the front part is relatively small, and the range of the specific concentration ratio can be known through CAE analysis; based on this, in the present embodiment, the ratio of the opening area of the smoke inlet at each side of the smoke guiding cover 100 is defined, specifically, the ratio of the opening area of the first smoke inlet a to the opening area of the second smoke inlet b is 0.6 to 2.5, including 0.6, 0.8, 1.0, 1.4, 1.7, 2.0, 2.3, 2.5, etc., and further analysis shows that the ratio is preferably 0.82. And the ratio of the opening area of the first smoke inlet a to the opening area of the third smoke inlet c is 0.6 to 2.5, including 0.6, 0.8, 1.0, 1.4, 1.7, 2.0, 2.3, 2.5, etc., and the ratio is preferably 0.82 by further analysis.

Based on the design of above-mentioned area ratio, guaranteed to set up the great cigarette inlet of area in the great region of flue gas concentration, the less cigarette inlet of area is set up in the less region of flue gas concentration to can promote the adsorption efficiency of flue gas, can effectively alleviate simultaneously because the flue gas adsorbs the problem that appears escaping in time untimely.

Considering that the flue gas concentration of each individual side area of the smoke guiding hood 100 is also different, in the present embodiment, the smoke inlet on a part of the side plate of the smoke guiding hood 100 is specially designed, as shown in fig. 1 to 3, for the front part of the smoke guiding hood 100, that is, the front side plate 110, a first smoke inlet a is respectively opened on the left side area and the right side area of the front side plate 110, while the first smoke inlet a is not opened on the middle area of the front side plate 110, a first closed area e is formed, which is mainly because two furnace ends are respectively close to the left side and the right side of the smoke guiding hood 100, and therefore, the flue gas concentration of the left side area and the right side area of the front part is relatively high, and the middle area is relatively; and the right upper side of the first smoke inlet a of the left side area is gradually inclined downwards, and similarly, the left upper side of the first smoke inlet a of the left side area is gradually inclined downwards, so that the first closed area e is in a shape similar to a big end up and a small end down, and the first closed area e is also designed in a pertinence mode by considering the factors that the smoke concentration in the middle of the front portion is relatively small and the like.

Regarding the left part of the smoke guide hood 100, that is, the left side plate 120, the second smoke inlet b is opened in most of the area of the left side plate 120, the second smoke inlet b is not opened at the rear upper side of the left side plate 120, and the second closed area f is formed, which is mainly because the concentration of the smoke in the left part of the smoke guide hood 100 is also different, that is, the concentration in the front area is relatively large, and the concentration in the rear area is relatively small, and the design is also designed specifically in consideration of the factors such as the relatively small concentration of the smoke in the rear area of the left part. Preferably, the rear upper side of the second smoke inlet b on the left side plate 120 is gradually inclined downward from front to rear, thereby forming a second closed region f like a triangle.

Similarly, for the right portion of the smoke guide hood 100, that is, the right side plate 130, the third smoke inlet c is opened in most of the area of the right side plate 130, and the third smoke inlet c is not opened at the rear upper side of the right side plate 130, and the third closed area g is formed therein, which is mainly because the smoke concentration in the right portion of the smoke guide hood 100 is also different, that is, the smoke concentration in the front area is relatively higher, and the smoke concentration in the rear area is relatively lower, and this design is also designed specifically in consideration of the fact that the smoke concentration in the rear area of the right portion is relatively lower. Preferably, the rear upper side of the third smoke inlet c on the right side plate 130 is gradually inclined downward from the front to the rear, thereby forming a third closed region g like a triangle.

Therefore, the smoke inlet on the side plate of the smoke guiding hood 100 is designed unevenly in the embodiment to adapt to the smoke concentration around each area, thereby improving the adsorption efficiency of the smoke to a certain extent and simultaneously alleviating the problem of smoke escape.

Preferably, the first smoke inlet a located in the left and right regions of the front side plate 110 is designed to be trapezoid-like, the second smoke inlet b located in the left side plate 120 is designed to be trapezoid-like, and the third smoke inlet c located in the right side plate 130 is designed to be trapezoid-like. It should be noted that, the trapezoid-like shape specifically refers to a shape of the smoke inlet with a substantially trapezoid shape, but not a strict trapezoid shape.

Further, the first smoke inlet a, the second smoke inlet b and the third smoke inlet c are formed by splicing a plurality of elongated holes, as shown in fig. 1 to 3, and preferably, the elongated holes are arranged side by side. It should be noted here that the shape of the elongated hole is adaptively adjusted at the intersection of the two adjacent side plates.

In conclusion, the smoke guiding assembly provided by the embodiment can adaptively design the smoke inlet according to the CAE analysis result of the surrounding smoke concentration, so that the smoke inlet is uniquely designed in the different areas of the smoke guiding cover 100 and the different positions of the same area, and the opening area and the shape of the smoke inlet are designed to maximally improve the smoke adsorption efficiency and reduce the smoke escape, and finally improve the smoke absorption quality of the whole range hood.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (14)

1. A smoke guide assembly is characterized by comprising a smoke guide hood (100), wherein a smoke outlet (d) is formed in the middle of the smoke guide hood (100) and is suitable for being communicated with a smoke collecting cavity (P) of a range hood;

first smoke inlet (a) is seted up to the front portion of leading petticoat pipe (100), and second smoke inlet (b) is seted up to the left part, and third smoke inlet (c) is seted up to the right part, just the area of first smoke inlet (a) is not equal to the area of second smoke inlet (b) or the area of third smoke inlet (c).

2. The smoke guide assembly according to claim 1, wherein the smoke guide hood (100) comprises a front side plate (110), a left side plate (120), a rear side plate (150) and a right side plate (130), wherein the front side plate (110), the left side plate (120), the rear side plate (150) and the right side plate (130) are sequentially enclosed end to form a closed ring, and the cross-sectional area of the closed ring is gradually reduced from one end far away from the smoke collection cavity (P) to one end close to the smoke collection cavity (P);

the first smoke inlet (a) is formed in the front side plate (110), the second smoke inlet (b) is formed in the left side plate (120), and the third smoke inlet (c) is formed in the right side plate (130).

3. The smoke guide assembly according to claim 2, wherein the large end of the closed ring is adapted to be connected with a flow guide (300), and a smoke inlet flow passage (Q) is defined between the smoke guide hood (100) and the flow guide (300), and the first smoke inlet (a), the second smoke inlet (b), the third smoke inlet (c) and the smoke outlet (d) are all communicated with the smoke inlet flow passage (Q).

4. A smoke guide assembly according to claim 3, wherein the angle between said front side plate (110) and the upper end face of said deflector (300) ranges from 0 ° to 20 °;

and/or the included angle between the left side plate (120) and the upper end face of the flow guide piece (300) ranges from 0 degree to 20 degrees;

and/or the included angle between the rear side plate (150) and the upper end face of the flow guide piece (300) ranges from 0 degree to 20 degrees;

and/or the included angle between the right side plate (130) and the upper end face of the flow guide piece (300) ranges from 0 degree to 20 degrees.

5. The smoke guide assembly of claim 4, wherein said front side plate (110), said left side plate (120), said rear side plate (150) and said right side plate (130) are all at an angle of 7 ° to the upper end surface of said deflector (300).

6. The smoke guide assembly of claim 2, wherein the smoke inlet on at least one of said front side plate (110), said left side plate (120) and said right side plate (130) is a mesh-like opening to form a protective mesh;

or at least one of the first smoke inlet (a), the second smoke inlet (b) and the third smoke inlet (c) is covered with a protective net.

7. The smoke guide assembly of claim 2, further comprising a mount (200), a top of said mount (200) adapted to connect to a smoke-collecting hood (400) of a range hood, a bottom of said mount (200) adapted to connect to or be integrally formed with said smoke guide hood (100).

8. The smoke guide assembly according to claim 7, wherein said smoke outlet (d) is located at the small end of said closed ring, and a protruding edge (140) surrounding said smoke outlet (d) is arranged at the small end of said closed ring, said protruding edge (140) is fixedly connected or detachably connected with said fixing frame (200).

9. The smoke guide assembly of any one of claims 1-8, wherein the ratio of the area of said first smoke inlet (a) to the area of said second smoke inlet (b) ranges from 0.6 to 2.5;

and/or the ratio of the area of the first smoke inlet (a) to the area of the third smoke inlet (c) ranges from 0.6 to 2.5.

10. The smoke guide assembly of claim 9, wherein the ratio of the area of said first smoke inlet (a) to the area of said second smoke inlet (b) is 0.82;

and/or the ratio of the area of the first smoke inlet (a) to the area of the third smoke inlet (c) is 0.82.

11. The smoke guide assembly according to claim 9, wherein the first smoke inlet (a) is opened at left and right side regions of a front portion of the smoke guide hood (100) to form a first closed region (e) at a middle of the front portion of the smoke guide hood (100);

and/or a second closed area (f) is formed at the rear upper side of the left part of the smoke guide hood (100);

and/or, the rear upper side of the right part of the fume guide hood (100) is formed with a third closed area (g).

12. The smoke guide assembly according to claim 11, wherein the first smoke inlet (a) located at the left and right side regions of the front portion of the smoke guide hood (100) are each shaped like a trapezoid;

and/or the second smoke inlet (b) is in a trapezoid-like shape;

and/or the third smoke inlet (c) is in a trapezoid-like shape.

13. The smoke guide assembly of claim 12, wherein said first smoke inlet (a), said second smoke inlet (b) and said third smoke inlet (c) are formed by splicing a plurality of elongated holes.

14. A range hood, characterized by comprising a smoke guide assembly according to any one of claims 1-13.

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