CN111473386A

CN111473386A - Smoke collecting hood and range hood

Info

Publication number: CN111473386A
Application number: CN202010401392.8A
Authority: CN
Inventors: 任富佳; 高少华; 陈建卫; 班永; 唐裴; 李丹丹
Original assignee: Hangzhou Robam Appliances Co Ltd
Current assignee: Hangzhou Robam Appliances Co Ltd
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2020-07-31

Abstract

The invention discloses a smoke collecting hood which is arranged on a range hood and comprises an oil screen assembly, wherein the oil screen assembly comprises a drainage plate and an oil screen arranged on the drainage plate, the oil screen is circumferentially arranged at the edge of the drainage plate at intervals, and an air inlet suitable for the installation of the oil screen is arranged on the drainage plate; the oil net is of a V-shaped structure and comprises an air inlet cavity formed by two air inlet surfaces, and the effective air inlet area of the oil net is larger than that of the air inlet. By arranging the oil net with the V-shaped structure, the effective air inlet area of the smoke collecting hood is enlarged, and the smoking effect is improved; through setting up the oil net interval on the limit portion of drainage plate, initiatively distribute the negative pressure region that the range hood during operation formed, mainly distribute the negative pressure in the periphery of collection petticoat pipe, avoid the oil smoke to escape on collection petticoat pipe chamber limit portion.

Description

Smoke collecting hood and range hood

Technical Field

The invention relates to the technical field of range hoods, in particular to a smoke collecting hood and a range hood.

Background

The smoke leakage phenomenon of the existing range hood becomes a main problem of scaling of consumers, and in order to improve the smoke absorption effect of the range hood, people adopt various methods, for example, the power of a fan system is improved so as to improve the suction force and the air inlet amount of the range hood, and the smoke leakage phenomenon of the range hood can be relieved to a certain extent by the method, but the improvement of the fan is involved, and the cost is higher; the smoke baffle plates are arranged on the left side and the right side of the smoke collecting hood, or the smoke guide plates which guide the oil smoke to the air inlet are arranged, so that the effect of preventing the oil smoke from leaking is very little.

The negative pressure area formed when the range hood works is the key for sucking away oil smoke, after the oil smoke is generated during cooking, the rising process begins to diffuse, one part of the oil smoke enters the negative pressure area formed by the range hood to be sucked away, and the other part of the oil smoke escapes to the outside of the negative pressure area to form smoke leakage, so that how to effectively enlarge the negative pressure coverage area is a necessary means for solving the problem of oil smoke escape.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a fume collecting hood which can actively distribute negative pressure generated by a range hood, improve the area and the use efficiency of a negative pressure area when the range hood works, avoid the escape of oil fume and improve the smoking effect.

The invention also provides a range hood adopting the smoke collecting hood.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a smoke collecting hood is installed on a range hood and comprises an oil screen assembly, wherein the oil screen assembly comprises a drainage plate and an oil screen installed on the drainage plate, the oil screen is circumferentially arranged at intervals on the edge of the drainage plate, and an air inlet suitable for installation of the oil screen is formed in the drainage plate; the oil net is of a V-shaped structure and comprises an air inlet cavity formed by two air inlet surfaces, the open end of the oil net is installed on the air inlet downwards, and the effective air inlet area of the oil net is larger than that of the air inlet.

Further, the middle part of collection petticoat pipe is provided with the connecting plate, oil net subassembly mirror image is arranged the both sides of connecting plate.

Furthermore, the oil net corresponds to the air inlets one by one, and oil smoke enters the smoke collecting cavity of the smoke collecting hood through the oil net.

Further, the width of the air inlet is larger than 20 mm.

Further, the oil nets comprise a front oil net and a rear oil net which are arranged on the front side and the rear side of the smoke collecting hood, outer oil nets which are arranged on the left side and the right side of the smoke collecting hood and inner oil nets which are arranged on the two sides of the connecting plate; each oil net comprises an outer side face close to the edge of the smoke collecting hood and an inner side face opposite to the outer side face; the included angle between the outer side surface of the outer oil net and the drainage plate is 35-90 degrees, and the included angle between the inner side surface of the outer oil net and the drainage plate is 110-160 degrees; the included angle between the outer side surface of the front oil net and the flow guide plate is 110-160 degrees, and the included angle between the inner side surface of the front oil net and the flow guide plate is 35-90 degrees.

Furthermore, the included angle between the outer side surface of the inner oil net and the drainage plate is 35-90 degrees, and the included angle between the inner side surface of the inner oil net and the drainage plate is 35-90 degrees.

Further, constitute overall structure through the oil net connecting plate between the oil net, the oil net connecting plate with the drainage plate passes through the buckle and connects, installs overall structure's oil net between collection smoke chamber and the drainage plate.

Further, a gap is formed between the oil net connecting plate and the drainage plate.

Further, the oil net subassembly to the back side of collection petticoat pipe inclines to set up, the back side bottom of collection petticoat pipe is provided with the oil cup, the terminal setting of slope of oil net subassembly is in the upper portion of oil cup.

A range hood provided with the smoke collecting hood.

According to the invention, the oil net with the V-shaped structure is arranged, so that the effective air inlet area of the smoke collecting hood is enlarged, and the smoking effect is improved; through setting up the oil net interval on the limit portion of drainage plate, initiatively distribute the negative pressure region that the range hood during operation formed, mainly distribute the negative pressure in the periphery of collection petticoat pipe, avoid the oil smoke to escape on collection petticoat pipe chamber limit portion.

In the preferred technical scheme of the invention, different included angles are arranged between the two air inlet surfaces of the oil screen with the V-shaped structure and the drainage plate according to the diffusion path in the rising process of the oil smoke, so that the use efficiency of a negative pressure area is improved in a targeted manner, the escape of the oil smoke at the periphery of the smoke collecting hood is further reduced, and the occurrence of a smoke leakage phenomenon is avoided.

In a further preferred technical scheme, the oil screen assembly which is obliquely arranged can play a good oil guiding effect, so that condensed oil stains are arranged on the surface of the drainage plate and along the oil cup at the bottom of the rear side of the fume collecting cover, oil drops generated by the oil screen in use can be collected more conveniently, dripping of the oil stains is effectively reduced, and the use experience of a user is improved.

The effective air inlet area of the oil net is defined as follows: and multiplying the sum of the area of the outer side surface and the area of the inner side surface of the oil screen by the through hole rate of the oil screen.

Drawings

FIG. 1 is a schematic structural diagram of a range hood according to the present invention;

FIG. 2 is a schematic view of the installation of an oil screen on a fume collecting hood;

FIG. 3 is a diagram of the mating relationship of the oil screen assemblies;

FIG. 4 is a schematic view of the structure of an oil screen;

FIG. 5 is a schematic view of the installation of the front oil screen and the flow guide plate;

FIG. 6 is a schematic view of the installation of the outer oil screen and the flow guide plate;

FIG. 7 is a schematic view of the installation of the inner oil net and the flow guide plate;

FIG. 8 is a schematic view of the structure of a flow guide plate.

In the figure, 1 outer shell of the cigarette machine, 2 oil net components,

21 flow guide plates, 211 a cofferdam,

22 an oil net connecting plate is arranged on the oil net,

221 front oil net, 2211 front oil net outside air inlet surface, 2212 front oil net inside air inlet surface,

222 of the rear oil screen, the oil screen,

223 an outer oil net, 2231 an outer oil net outer air inlet surface, 2232 an outer oil net inner air inlet surface,

224 inner oil screen, 2241 inner oil screen outer air inlet surface, 2242 inner oil screen inner air inlet surface,

225 the path of the cooking fumes,

23 on the inner side of the inner side surface,

24 the outer side of the body is provided with a plurality of grooves,

25, buckling the two ends of the steel wire rope,

3 smoke collecting hood, 4 oil cup, 5 oil smoke pipeline, 6 connecting plate.

Detailed Description

In the description of the present embodiment, the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as specifically indicating or implying relative importance.

To clearly illustrate the idea of the present invention, the present invention is described below with reference to examples.

The smoke collecting hood is arranged on a range hood and comprises an oil screen assembly, wherein the oil screen assembly comprises a drainage plate and an oil screen arranged on the drainage plate, the oil screen is circumferentially arranged at intervals on the edge of the drainage plate, and an air inlet suitable for the installation of the oil screen is formed in the drainage plate; the oil net is of a V-shaped structure and comprises an air inlet cavity formed by two air inlet surfaces, and the effective air inlet area of the oil net is larger than that of the air inlet.

According to the invention, the negative pressure area is actively distributed through the oil nets arranged at intervals according to the diffusion path in the oil smoke rising process, so that the use efficiency of the negative pressure in the working process of the range hood is improved; the original single air inlet surface is improved into double air inlet surfaces through the oil net with the V-shaped structure, so that the existing oil smoke suction path is changed, and the coverage surface of a negative pressure area is enlarged; the effective air inlet area of the oil screen is larger than the area of the air inlet, so that the fluid performance index of the range hood is ensured on the premise of achieving negative pressure distribution, and the air suction volume of the range hood is not influenced.

In order to more clearly illustrate the technical solution of the present invention, the following description is made in the form of specific embodiments.

Examples

Referring to fig. 1-4, the smoke collecting hood of the present embodiment is installed at the bottom of a range hood, the range hood includes a hood outer shell 1, a smoke collecting hood 3 is installed at the lower part of the hood outer shell 1, and an oil screen assembly 2 and an oil cup 4 are installed inside the smoke collecting hood 3. The collection petticoat pipe 3 in this embodiment includes that the left and right sides is two sets of oil net subassembly 2 of mirror symmetry, connects through the connecting plate 6 that sets up at collection petticoat pipe 3 middle part in the middle of oil net subassembly 2, and the collection petticoat pipe 3 of oil net subassembly 2 inboard is inside, constitutes the collection smoke chamber of oil smoke on collection petticoat pipe 3, and the oil smoke is discharged by oil smoke pipeline 5 after getting into collection smoke chamber through oil net subassembly 2.

Referring to fig. 3, the oil screen assembly 2 includes a flow guide plate 21 and an oil screen installed on the flow guide plate 21, the oil screen is circumferentially arranged at intervals on the edge of the flow guide plate 21, the flow guide plate 21 is a whole panel, air inlets are formed around the flow guide plate 21, and the oil screens are installed on the air inlets in a one-to-one correspondence manner. The oil screens are arranged at intervals, and the purpose is to actively distribute the negative pressure area of the smoke collecting hood 3 to form a negative pressure space with relatively independent positions of each oil screen, so that the negative pressure coverage surface of an air inlet cavity where the independent oil screens are positioned can be conveniently and pertinently adjusted by changing the structure of the oil screens; in the embodiment, according to the rising path of the oil smoke generated by the gas stove, when the oil smoke reaches the smoke collecting cover 3, the oil smoke is easy to turn down along the edge of the smoke collecting cover 3, so that the escaping phenomenon is caused. Through setting up the oil net respectively at the limit portion of drainage plate 21, more specifically, set up in the front side and both sides of collection petticoat pipe 3, can effectively prevent that the oil smoke from escaping from the border of collection petticoat pipe 3, improve the smoking effect. The mode that the oil net interval set up has avoided the pressure that communicates each other and cause to establish ties, has promoted the availability factor that range hood during operation produced the negative pressure.

The oil screen is of a V-shaped structure and comprises two air inlet surfaces, namely an inner side surface 23 and an outer side surface 24, an opening is formed between the bottom ends of the two air inlet surfaces, and an air inlet cavity of the oil screen is formed among the opening, the inner side surface 23 and the outer side surface 24. The sum of the area of the inner side surface 23 and the area of the outer side surface 24 of the oil screen is multiplied by the through hole rate of the oil screen to obtain the effective air inlet area of the oil screen, and the effective air inlet area of each V-shaped oil screen is larger than the area of the air inlet corresponding to the installation position of the oil screen.

The oil net is the type of falling V mounting mode specifically, and two air inlet faces stretch into the collection cigarette chamber in the collection petticoat pipe 3, and uncovered installation is in the air intake position that corresponds on drainage plate 21. When the range hood works, oil smoke firstly enters the air inlet cavity of the oil screen through the opening and then enters the smoke collecting cavity of the smoke collecting cover 3 through the two air inlet surfaces. The oil screen structure of two air inlet surfaces improves the existing single-surface oil screen form, and effectively improves the air inlet area of the oil smoke fluid; in addition, the oil smoke enters the smoke collecting cavity from the two inclined air inlet surfaces after passing through the opening, the unidirectional suction channel of the existing oil smoke is changed, the air inlet channel of the oil smoke is widened under the condition of the same negative pressure, and the use efficiency of the negative pressure is greatly improved from the aspect, so that the smoking effect is obviously improved. The air inlet surface is arranged in the smoke collection cavity, and can reduce the noise generated by collision between oil smoke fluid and an oil screen when the range hood works, so that the noise is mainly limited in the smoke collection cavity, and the use environment of the range hood during working is improved.

In the existing smoke collecting hood, an air inlet is formed in a drainage plate, and an oil screen with oil filtering holes is installed at the position of the air inlet. In the invention, the effective air inlet area of the oil screen is larger than the area of the air inlet by increasing the air inlet surface of the oil screen, so that the air inlet amount of the existing range hood is greatly improved, and the air performance index is reliably ensured. The oil smoke does not produce the pressure loss when the uncovered position of oil net, and gets into the collection cigarette chamber through different suction directions, has improved the suction path of oil smoke, has enlarged the regional cover surface of negative pressure, has effectively avoided the oil smoke to run the cigarette in the collection petticoat pipe outside, the condition emergence such as cigarette leaks. It should be noted that the width of the air inlet on the flow guide plate 21 is greater than 20mm, and in this embodiment is 38 mm. The width setting mainly has two considerations, and on one hand, the flow of the fluid is influenced by the excessively small width, so that the cigarette gathering effect is further influenced; on the other hand, under the condition of narrow width, oil is easy to hang on the edge of the air inlet to cause clogging, and the structure of the flow guide plate is shown in figure 8 in detail.

Referring to fig. 4, two sets of oil screen assemblies 2 are arranged in the fume collecting hood 3, each oil screen assembly comprises a left oil screen assembly and a right oil screen assembly, and the oil screen assemblies 2 are respectively arranged on a left drainage plate and a right drainage plate corresponding to the oil screen assemblies. Two sets of oil net subassemblies are the mirror image and distribute in the connecting plate 6 both sides at collection petticoat pipe 3 middle part, all install the oil net in drainage plate 21 four peripheral parts. Specifically, the oil nets on the front and rear sides of the hood 3 are a front oil net 221 and a rear oil net 222, the outer oil nets 223 are installed on the left and right sides of the hood 3, and the inner oil nets 224 are distributed on both sides of the connecting plate 6. The air inlet surface of each oil net close to the edge of the smoke collecting cover 3 is an outer side air inlet surface, and the air inlet surface opposite to the outer side air inlet surface, namely the air inlet surface positioned on the inner side of the edge of the smoke collecting cover 3, is an inner side air inlet surface. In the existing range hood, oil smoke mainly escapes from the edge of the smoke collecting cover 3, the invention aims to capture the oil smoke to a greater extent and enlarge the negative pressure coverage area, and aims to set and adjust the oil nets at the edge of the smoke collecting cover 3, and mainly adjusts the inclination angles of two air inlet surfaces of the front oil net 221 and the outer oil net 223 so as to more effectively capture the oil smoke which easily escapes from the edge of the smoke collecting cover 3. In the specific installation, the included angle a between the outer side air inlet surface 2231 of the outer oil screen and the drainage plate 21 is 35-90 degrees, and the angle is 73 degrees in this embodiment; the included angle B between the air inlet surface 2232 at the inner side of the outer oil screen and the flow guide plate 21 is 110-; the included angle C between the outer air inlet surface 2211 of the front oil screen and the drainage plate 21 is 110 degrees and 160 degrees, and the angle is 149 degrees in the embodiment; the included angle D between the inner air inlet surface 2212 of the front oil screen and the drainage plate 21 is 35-90 degrees, and the angle is 69 degrees in the embodiment. Meanwhile, in order to match and assist the edge oil screens of the fume collecting hood, the included angle E between the outer side air inlet surface 2241 of the inner oil screen and the drainage plate 21 is 35-90 degrees, and the angle is 66 degrees in the embodiment; the included angle F between the inner oil screen inner air inlet surface 2242 and the drainage plate 21 is 35-90 degrees, the included angle is 59 degrees in the embodiment, and the inclined angle is shown in figures 5-7. Of course, the angle of the included angle between the air inlet surface and the drainage plate is not limited to the specific angle, and can be adjusted as required in the setting range. Through setting up different inclination, especially to the comparatively skew setting of preceding oil net 221 outside air inlet face and the inboard air inlet face of outer oil net 223, enlarged the regional coverage area of negative pressure that the oil net corresponds, make gathering together the cigarette area increase of collection petticoat pipe air intake, satisfy the prerequisite that produces equal negative pressure under, can carry out more effectual seizure to the oil smoke, reduce the oil smoke and rise the emergence of the in-process from the outside condition of escaping of collection petticoat pipe 3.

According to the oil fume collection device, the two obliquely arranged air inlet surfaces of each oil screen improve the path of oil fume fluid, weaken the impact blocking of the existing single-sided oil screen on the oil fume during entering, and reduce the pressure loss of the fluid at the position of an air inlet.

In this embodiment, the oil screen assembly 2 is provided with four spaced oil screens, which form an integral structure through the oil screen connecting plate 22, the oil screen connecting plate 22 is an integral panel, the four oil screens are respectively installed on the edge of the oil screen connecting plate 22, and the opening structure of the oil screens is arranged on the oil screen connecting plate 22. The oil screen connecting plate 22 is connected with the drainage plate 21 through a buckle 25, and an integral oil screen structure formed by the oil screen and the oil screen connecting plate 22 is arranged between the smoke collection cavity and the drainage plate 21. During the specific installation, at first with whole oil net embedding collection petticoat pipe 3's inner chamber to fix the oil net on collection petticoat pipe 3, then install drainage plate 21 on the oil net through buckle 25, thereby accomplish and install overall structure's oil net between collection petticoat pipe chamber and drainage plate 21. Because oil drops in the oil smoke can be gradually condensed in the smoking process, the oil net needs to be opened periodically for more convenient cleaning. The installation form that buckle 25 is connected makes the dismouting between oil net and the drainage plate 21 more convenient, the work load when reducing the clearance. The drainage plate 21 is installed in the lower part of oil net connecting plate 22, and the oil drops after condensation firstly hang on oil net or oil net connecting plate 22, then drop to and assemble along the incline direction on the drainage plate 21, finally collect in the oil cup 4 that the slope bottom set up. This embodiment is provided with between oil net connecting plate 22 and drainage plate 21 and supplies the oil droplet to assemble the space that flows on drainage plate 21 surface, prevents to appear gluing of ageing sump oil.

According to the invention, the oil screen component 2 is inclined towards the rear side of the fume collecting hood 3, wherein the installation planes of the oil screen and the flow guide plate 21 are parallel and are inclined to the rear end along the depth direction of the fume collecting hood 3. The purpose that sets up that collection petticoat pipe 3 rear end is less than the front end has increased the operating space of user when the culinary art of collection petticoat pipe 3 front end on the one hand, reduces the sheltering from of collection petticoat pipe 3 to user's sight, and another important aspect has realized assembling of condensation sump oil, and condensation oil drips and can flow along the slope and assemble to the rear end of collection petticoat pipe 3, has avoided dripping on the gas-cooker. The oil cup 4 is arranged at the bottom of the rear side of the fume collecting hood 3, and the inclined tail end of the oil screen and the drainage plate 21 is arranged on the upper part of the oil cup 4, so that the condensation oil drops are effectively collected in the oil cup 4, and the practicability of the range hood is improved. In addition, cofferdams 211 for preventing dirty oil from dripping are arranged at the connecting part of the air inlet surface of each oil screen and the drainage plate 21, particularly on the drainage plate 21 at the inner side of the opening of the oil screen; the mounting position of outer oil net 223 is higher than inner oil net 224, and the mounting position of preceding oil net 221 is higher than back oil net 222, can make the dirty oil of condensation assemble to connecting plate 6 rear end, and then effectively get into in oil cup 4.

The range hood provided with the smoke collecting hood actively distributes negative pressure generated in working on the premise of ensuring fluid performance indexes, can effectively increase the coverage of a negative pressure area under the condition of outputting the same suction force, greatly improves the use efficiency of the negative pressure, greatly reduces the escape of oil smoke, and powerfully improves the smoke collecting effect.

It is important to point out that the pressure loss of the oil smoke at the air inlet is effectively reduced through the oil net with the V-shaped structure, the oil guiding effect of the oil net is enhanced through the specific structure of the oil net, and the oil hanging on the oil net is reduced.

It should be noted that, in addition to the four oil screens arranged on the circumferential direction of the drainage plate, three or more oil screens can be arranged according to the inner side shape of the specific smoke collecting hood according to the design idea of the invention; aiming at the air inlet surface of the oil screen, the air inlet surface can be properly adjusted according to the installation angle of the smoke collection cover, and the inclination direction and the included angle are adjusted by increasing the angle of the negative pressure covering surface; besides forming an integral structure with the oil screen connecting plate, the oil screen can be mounted by clamping each independent V-shaped oil screen at the air inlet of the drainage plate, which is also a substitute change that can be made by a person skilled in the art according to the design concept of the invention and is not described again.

Finally, it is to be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not intended to be limiting. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention, and these changes and modifications are to be considered as within the scope of the invention.

Claims

1. A smoke collecting hood is installed on a range hood and is characterized by comprising an oil screen assembly (2), wherein the oil screen assembly (2) comprises a drainage plate (21) and an oil screen installed on the drainage plate (21), the oil screen is circumferentially arranged at the edge of the drainage plate (21) at intervals, and an air inlet suitable for installation of the oil screen is formed in the drainage plate (21); the oil net is of a V-shaped structure and comprises an air inlet cavity formed by two air inlet surfaces, the open end of the oil net is installed on the air inlet downwards, and the effective air inlet area of the oil net is larger than that of the air inlet.

2. A fume collecting hood according to claim 1, characterized in that the fume collecting hood is provided with a connecting plate (6) in the middle, and the oil screen assemblies (2) are arranged in mirror image on both sides of the connecting plate (6).

3. A fume collecting hood according to claim 1, wherein the oil nets correspond to the air inlets one by one, and fume enters the fume collecting chamber of the fume collecting hood through the oil nets.

4. A fume collecting hood according to claim 3 wherein the width of the air inlet is greater than 20 mm.

5. A fume collecting hood according to any of the claims 1-4, characterized in that the oil nets comprise a front oil net (221) and a rear oil net (222) installed at the front and rear sides of the fume collecting hood, an outer oil net (223) installed at the left and right sides of the fume collecting hood, and an inner oil net (224) installed at both sides of the connecting plate (6); each oil net comprises an outer side face (24) close to the edge of the fume collecting hood and an inner side face (23) opposite to the outer side face (24); an included angle (A) between the outer side surface of the outer oil net (223) and the drainage plate (21) is 35-90 degrees, and an included angle (B) between the inner side surface of the outer oil net (223) and the drainage plate (21) is 110-160 degrees; an included angle (C) between the outer side surface of the front oil net (221) and the flow guide plate (21) is 110-160 degrees, and an included angle (D) between the inner side surface of the front oil net (221) and the flow guide plate (21) is 35-90 degrees.

6. A fume collecting hood according to claim 5, characterized in that the included angle (E) between the outer side of the inner oil net (224) and the flow guide plate (21) is 35-90 degrees, and the included angle (F) between the inner side of the inner oil net (224) and the flow guide plate (21) is 35-90 degrees.

7. A fume collecting hood according to claim 5, characterized in that the oil nets are integrally formed by oil net connecting plates (22), the oil net connecting plates (22) are connected with the flow guide plates (21) through buckles (25), and the oil nets of the integral structure are installed between the fume collecting cavity and the flow guide plates (21).

8. A fume collecting hood according to claim 7, characterized in that a gap is provided between the oil net connecting plate (22) and the flow guide plate (21).

9. A fume collecting hood according to claim 1, characterized in that the oil net component (2) is obliquely arranged towards the rear side of the fume collecting hood, an oil cup (4) is arranged at the bottom of the rear side of the fume collecting hood, and the oblique tail end of the oil net component (2) is arranged at the upper part of the oil cup (4).

10. A range hood incorporating a smoke collecting hood as claimed in any one of claims 1 to 9.