CN220541165U - Fume exhaust fan - Google Patents

Abstract

The utility model provides a range hood, and belongs to the technical field of kitchen equipment. The range hood comprises a main machine part and a fume collecting hood, wherein the fume collecting hood is arranged on the main machine part, a negative pressure cavity is formed in the fume collecting hood in a surrounding mode, a first air inlet is formed in a wall plate of the fume collecting hood, a first drainage inclined surface is further arranged on the wall plate of the fume collecting hood in a surrounding mode, the caliber of the first drainage inclined surface is gradually reduced in the air inlet direction, and the first drainage inclined surface is configured to be used for reducing the corner of air inlet so as to reduce wind resistance. When the oil smoke rises, the oil smoke is smoothly guided into the air inlet along the inclination angle direction of the first drainage inclined plane, so that the smoke is more smoothly guided, and the wind resistance is reduced.

Description

Fume exhaust fan

Technical Field

The utility model relates to the technical field of kitchen equipment, in particular to a range hood.

Background

The air inlet of the existing range hood is rectangular or square, and the corners between the wall plates and the hole wall of the air inlet are 90 degrees, so that smoke flowing on the wall plates needs to turn 90 degrees to enter the negative pressure cavity of the range hood when entering the air inlet, and the problems of high air inlet resistance, high air noise and low air inlet efficiency are caused.

Disclosure of Invention

The utility model aims to provide a range hood, which can smoothly guide smoke, thereby reducing wind resistance and improving air inlet efficiency.

In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme:

according to one aspect of the utility model, there is provided a range hood comprising a main machine part and a fume collecting hood, wherein the fume collecting hood is arranged on the main machine part, a negative pressure cavity is arranged around the fume collecting hood, a first air inlet is formed in a wall plate of the fume collecting hood, a first drainage inclined plane is further arranged around the first air inlet on the wall plate of the fume collecting hood, the caliber of the first drainage inclined plane is gradually reduced in the air inlet direction, and the first drainage inclined plane is configured to reduce corners of fume.

According to one embodiment of the utility model, the smoke collecting hood further comprises a first guide plate, and the first guide plate is movably installed on the smoke collecting hood up and down corresponding to the first air inlet.

According to one embodiment of the utility model, the first guide plate is located outside the negative pressure cavity, and the first air inlet is a round opening.

According to one embodiment of the utility model, the wall plate of the fume collecting hood is further provided with a second air inlet, the second air inlet is arranged left and right with the first air inlet, the wall plate of the fume collecting hood is further provided with a second drainage inclined plane surrounding the second air inlet, and the caliber of the second drainage inclined plane is gradually reduced in the air inlet direction.

According to one embodiment of the utility model, the smoke collecting hood further comprises a second guide plate, and the second guide plate is movably arranged on the smoke collecting hood up and down corresponding to the second air inlet.

According to one embodiment of the utility model, the second guide plate is located in the negative pressure cavity, and the second air inlet is a round opening.

According to one embodiment of the utility model, the wall plate of the fume collecting hood is further provided with a third air inlet, the first air inlet is positioned between the third air inlet and the second air inlet, the wall plate of the fume collecting hood is further provided with a third drainage inclined plane surrounding the third air inlet, and the caliber of the third drainage inclined plane is gradually reduced in the air inlet direction.

According to one embodiment of the utility model, the smoke collecting hood further comprises a third guide plate, and the third guide plate is movably arranged on the smoke collecting hood up and down corresponding to the third air inlet.

According to an embodiment of the utility model, the third guide plate is located in the negative pressure cavity, and the third air inlet is a round opening.

According to one embodiment of the utility model, the oil collecting box is arranged at the rear lower end of the fume collecting hood, and the wall plate of the fume collecting hood gradually inclines downwards from front to back so as to guide oil stains into the oil collecting box.

According to one embodiment of the utility model, the lower end edge of the first guide plate is provided with a first annular chamfer, and the inclined surface of the first annular chamfer gradually inclines towards the edge direction in the air inlet direction.

According to one embodiment of the utility model, the lower end edge of the second guide plate is provided with a second annular chamfer, and the inclined surface of the second annular chamfer gradually inclines towards the edge direction in the air inlet direction.

According to one embodiment of the utility model, a third annular chamfer is formed at the edge of the lower end of the third guide plate, and the inclined surface of the third annular chamfer gradually inclines towards the edge direction in the air inlet direction.

One embodiment of the present utility model has the following advantages or benefits:

the fume exhaust fan comprises a main machine part and a fume collecting cover, wherein the fume collecting cover is arranged on the main machine part, a negative pressure cavity is formed in the periphery of the fume collecting cover, a first air inlet is formed in a wall plate of the fume collecting cover, a first drainage inclined plane is further arranged on the wall plate of the fume collecting cover around the first air inlet, the caliber of the first drainage inclined plane is gradually reduced in the air inlet direction, the first drainage inclined plane is configured to be used for reducing air inlet corners, and fume is smoothly guided into the air inlet along the inclination angle direction of the first drainage inclined plane when rising, so that fume is more smoothly guided, the wind resistance is reduced, and the air inlet efficiency is improved.

Drawings

The above and other features and advantages of the present utility model will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

Fig. 1 is a front sectional view of a range hood according to an exemplary embodiment.

Fig. 2 is a schematic view showing a drainage slope angle of a range hood according to an exemplary embodiment.

Fig. 3 is a side sectional view of a range hood according to an exemplary embodiment.

Wherein reference numerals are as follows:

1. a main unit; 11. a chassis; 12. a blower; 2. a fume collecting hood; 21. a negative pressure chamber; 22. a first air inlet; 23. a first drainage ramp; 24. a second air inlet; 25. a second drainage ramp; 26. a third air inlet; 27. a third drainage ramp; 3. a first deflector; 31. a first annular chamfer; 4. a second deflector; 41. a second annular chamfer; 5. a third deflector; 51. a third annular chamfer; 6. and an oil receiving box.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.

The terms "a," "an," "the," and "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. in addition to the listed elements/components/etc.

As shown in fig. 1 to 3, a range hood according to an embodiment of the present utility model includes a main body part 1 and a smoke collecting hood 2.

The main unit 1 includes a housing 11 and a fan 12 provided in the housing 11.

Under the condition of upper exhaust air intake, the fume collecting hood 2 is arranged at the bottom of the case 11, the fume collecting hood 2 is surrounded by a negative pressure cavity 21 communicated with the cavity of the case 11, a first air inlet 22 is formed in a wall plate at the bottom of the fume collecting hood 2, a first drainage inclined surface 23 is further arranged on the wall plate at the bottom of the fume collecting hood 2 in a surrounding manner, the caliber of the first drainage inclined surface 23 is gradually reduced in the air intake direction, the first drainage inclined surface 23 is configured into a corner for reducing air intake, and when fume rises, the fume is smoothly guided into the air inlet along the inclination direction, so that the fume is smoothly led into the negative pressure cavity 21 through the first drainage inclined surface 23 and the first air inlet 22.

In the case of side air intake, the fume collecting hood 2 is located at one side of the main machine part 1, and a person skilled in the art can select the position of the fume collecting hood 2 relative to the main machine part 1 according to actual needs.

As shown in fig. 2, in the cross-sectional view, the included angle Y between the wall surface of the first drainage inclined surface 23 and the horizontal plane is an acute angle, and when the included angle Y is 40 degrees, the air inlet resistance is minimum.

As shown in fig. 1, in a preferred embodiment of the present utility model, the present utility model further includes a first baffle 3, where the first baffle 3 is movably mounted on the fume collecting hood 2 up and down corresponding to the first air inlet 22, so as to realize adjustable air volume and static pressure and reduce the escape rate of oil smoke.

The position of the first guide plate 3 is adjusted according to the requirement, so that the air inlet space of the first air inlet 22 can be adjusted to meet the requirements of smoke discharge in different cooking. The first guide plate 3 guides the oil smoke, so that air inlet is smoother and more uniform, the first guide plate 3 also has the effect of condensing the smoke, the smoke discharging environment-friendly type is improved, and the service life of the fan is prolonged.

For example, when the distance between the first baffle 3 and the first air inlet 22 is reduced, the air inlet space of the first air inlet 22 is reduced.

When the distance between the first guide plate 3 and the first air inlet 22 is enlarged, the air inlet space of the first air inlet 22 is enlarged.

For example, the fume collecting hood 2 is provided with a threaded rod at the axis of the first air inlet 22, a threaded hole is formed in the center of the first guide plate 3, and the first guide plate 3 can be movably mounted on the fume collecting hood 2 up and down through the cooperation of the threaded hole and the threaded rod.

Of course, the installation mode of the first baffle 3 is not limited to the above embodiment, and a person skilled in the art may select the installation mode of the first baffle 3 according to actual needs.

In a preferred embodiment of the utility model, the first baffle 3 has an optimal air guiding and condensing effect when it is adjusted outside the negative pressure chamber 21.

Of course, the first baffle 3 may also be located in the negative pressure cavity 21, and a person skilled in the art may select the position of the first baffle 3 according to actual needs.

Preferably, when the first air inlet 22 is a round opening, the air inlet resistance is minimum, and in addition, the first air inlet 22 is round and attractive in shape, so that higher attractive demands of consumers are met.

As shown in fig. 1, in a preferred embodiment of the present utility model, a second air inlet 24 is further formed on a wall plate of the fume collecting hood 2, and the second air inlet 24 is arranged left and right with the first air inlet 22, so as to improve the air intake and further improve the anti-escape performance.

As shown in fig. 1, the wall plate of the fume collecting hood 2 surrounds the second air inlet 24 and is further provided with a second drainage inclined plane 25, the caliber of the second drainage inclined plane 25 is gradually reduced in the air inlet direction, the air inlet efficiency is further improved, and the fume escape is further reduced. The function and principle of the second drainage slope 25 are the same as those of the first drainage slope 23, and will not be described again here.

In a preferred embodiment of the present utility model, as shown in fig. 1, the air collecting hood further comprises a second deflector 4, and the second deflector 4 is movably mounted on the air collecting hood 2 up and down corresponding to the second air inlet 24. The second guide plate 4 is used for guiding and condensing the oil smoke at the second air inlet 24, so that the smoke exhaust environment friendliness is improved.

In a preferred embodiment of the present utility model, as shown in fig. 1, when the first baffle 3 is located outside the negative pressure chamber 21 and the second baffle 4 is located inside the negative pressure chamber 21, the air intake efficiency and the smoke exhaust environmental protection are optimized.

Of course, the second baffle 4 is not limited to being located in the negative pressure chamber 21, and a person skilled in the art may select the position of the second baffle 4 according to actual needs.

Preferably, when the second air inlet 24 is a round opening, the air inlet resistance is minimum, and in addition, the second air inlet 24 is round and attractive in shape, so that higher attractive demands of consumers are met.

As shown in fig. 1, in a preferred embodiment of the present utility model, a third air inlet 26 is further formed on a wall plate of the fume collecting hood 2, the first air inlet 22 is located between the third air inlet 26 and the second air inlet 24, a third drainage inclined plane 27 is further disposed around the wall plate of the fume collecting hood 2 around the third air inlet 26, and the caliber of the third drainage inclined plane 27 is gradually reduced in the air inlet direction, so as to further improve the air inlet quantity and further reduce the escape of fume.

The structure and principle of the third drainage inclined plane 27 are the same as those of the second drainage inclined plane 25 and the first drainage inclined plane 23, and will not be described again here.

In a preferred embodiment of the present utility model, as shown in fig. 1, the air collecting hood further comprises a third deflector 5, and the third deflector 5 is movably mounted on the air collecting hood 2 up and down corresponding to the third air inlet 26. The third deflector 5 is used for guiding and condensing the oil smoke at the third air inlet 26, so as to further improve the environmental protection of the exhausted smoke.

In a preferred embodiment of the utility model, as shown in fig. 1, the smoke evacuation effect is optimal when the first baffle 3 is located outside the vacuum chamber 21, the second baffle 4 is located inside the vacuum chamber 21, and the third baffle 5 is located inside the vacuum chamber 21.

Preferably, the first guide plate 3, the second guide plate 4 and the third guide plate 5 are circular plates correspondingly, so that air inlet resistance is further improved.

As shown in fig. 1, preferably, the lower end edge of the first baffle 3 is provided with a first annular chamfer 31, the inclined surface of the first annular chamfer 31 gradually inclines to the edge direction in the air inlet direction, and the section of the first baffle 3 is in an isosceles trapezoid shape with wider upper part and narrower lower part. Thereby reducing the separation resistance of the flue gas and the first guide plate 3 and further improving the air inlet efficiency.

Preferably, when the first baffle 3 is circular, the air inlet resistance is minimum and the oil fume absorption efficiency is optimal.

As shown in fig. 1, preferably, the lower end edge of the second baffle 4 is provided with a second annular chamfer 41, the inclined surface of the second annular chamfer 41 gradually inclines towards the edge direction in the air inlet direction, and the section of the second baffle 4 is in an isosceles trapezoid shape with wider upper part and narrower lower part. Thereby reducing the separation resistance of the smoke and the second guide plate 4 and further improving the air inlet efficiency.

Preferably, when the second baffle 4 is circular, the air inlet resistance is minimum and the oil fume absorption efficiency is optimal.

As shown in fig. 1, preferably, the lower end edge of the third baffle 5 is provided with a third annular chamfer 51, the inclined surface of the third annular chamfer 51 gradually inclines towards the edge direction in the air inlet direction, and the section of the third baffle 5 is in an isosceles trapezoid shape with wider upper part and narrower lower part. Thereby reducing the separation resistance of the flue gas and the third guide plate 5 and further improving the air inlet efficiency.

Preferably, when the third baffle 5 is circular, the air intake resistance is the smallest and the oil fume absorption efficiency is the best.

As shown in fig. 3, in a preferred embodiment of the present utility model, the oil collecting device further comprises an oil collecting box 6, the oil collecting box 6 is detachably mounted at the lower end of the rear part of the fume collecting hood 2, the opening of the oil collecting box 6 faces upwards, the wall plate of the fume collecting hood 2 gradually inclines downwards from front to back, the wall plate of the fume collecting hood 2 is provided with an oil passing hole corresponding to the opening of the oil collecting box 6, oil dirt flows backwards from front to back along the inclined surface and flows into the oil collecting box 6 through the oil passing hole, and when the oil collecting box 6 is full of oil, the oil collecting box 6 can be detached from the fume collecting hood 2 to pour out the oil dirt, so as to achieve the effect of convenient cleaning.

Preferably, the first, second and third drainage inclined surfaces 23, 25 and 27 have an axial depth of 10-100mm, and the oil-smoke absorption efficiency is optimal.

In embodiments of the present utility model, the term "plurality" refers to two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly attached, detachably attached, or integrally attached. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

In the description of the embodiments of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and to simplify the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the embodiments of the present utility model.

In the description of the present specification, the terms "one embodiment," "a preferred embodiment," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present utility model and is not intended to limit the embodiment of the present utility model, and various modifications and variations can be made to the embodiment of the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present utility model should be included in the protection scope of the embodiments of the present utility model.

Claims (10)

1. A range hood, comprising:

a main unit (1),

the smoke collecting cover (2) is arranged on the main machine part (1), a negative pressure cavity (21) is formed by encircling the smoke collecting cover (2), a first air inlet (22) is formed in a wall plate of the smoke collecting cover (2), a first drainage inclined plane (23) is further arranged on the wall plate of the smoke collecting cover (2) in a surrounding mode, surrounding the first air inlet (22), and the caliber of the first drainage inclined plane (23) is gradually reduced in the air inlet direction.

2. The range hood according to claim 1, further comprising a first baffle (3), wherein the first baffle (3) is movably mounted on the fume collecting hood (2) up and down corresponding to the first air inlet (22), a first annular chamfer (31) is formed at the edge of the lower end of the first baffle (3), and the inclined surface of the first annular chamfer (31) is gradually inclined towards the edge direction in the air inlet direction.

3. The range hood according to claim 2, wherein the first baffle (3) is located outside the negative pressure cavity (21), and the first air inlet (22) is a circular opening.

4. The range hood according to claim 1, wherein a second air inlet (24) is further formed in a wall plate of the fume collecting hood (2), the second air inlet (24) is arranged left and right with the first air inlet (22), a second drainage inclined surface (25) is further arranged around the second air inlet (24) by the wall plate of the fume collecting hood (2), and the caliber of the second drainage inclined surface (25) is gradually reduced in the air inlet direction.

5. The range hood according to claim 4, further comprising a second baffle (4), wherein the second baffle (4) is movably mounted on the fume collecting hood (2) up and down corresponding to the second air inlet (24), a second annular chamfer (41) is formed at the edge of the lower end of the second baffle (4), and the inclined surface of the second annular chamfer (41) is gradually inclined towards the edge direction in the air inlet direction.

6. The range hood according to claim 5, wherein the second baffle (4) is located in the negative pressure cavity (21), and the second air inlet (24) is a circular opening.

7. The range hood according to claim 4, wherein a third air inlet (26) is further formed in a wall plate of the fume collecting hood (2), the first air inlet (22) is located between the third air inlet (26) and the second air inlet (24), a third drainage inclined surface (27) is further arranged around the third air inlet (26) on the wall plate of the fume collecting hood (2), and the caliber of the third drainage inclined surface (27) is gradually reduced in the air inlet direction.

8. The range hood according to claim 7, further comprising a third deflector (5), wherein the third deflector (5) is movably mounted on the fume collecting hood (2) up and down corresponding to the third air inlet (26), a third annular chamfer (51) is formed at the edge of the lower end of the third deflector (5), and the inclined surface of the third annular chamfer (51) is gradually inclined towards the edge direction in the air inlet direction.

9. The range hood according to claim 8, wherein the third baffle (5) is located in the negative pressure cavity (21), and the third air inlet (26) is a circular opening.

10. The range hood according to claim 1, further comprising an oil receiving box (6), wherein the oil receiving box (6) is mounted at the rear lower end of the fume collecting hood (2), and a wall plate of the fume collecting hood (2) is gradually inclined downwards from front to back.