CN111457439A - Combined type oil smoke interception net disc, range hood and no fan oil smoke machine - Google Patents

Abstract

The invention discloses a combined type oil smoke intercepting net disc, a range hood and a fan-free range hood, wherein the combined type oil smoke intercepting net disc comprises a framework disc and a fan blade disc, the framework disc comprises a plurality of framework spokes which are circumferentially arranged, the fan blade disc comprises a plurality of fan blade-shaped spokes which are circumferentially arranged, the framework disc is used for being installed at one side close to the incoming direction of an air flow, and the fan blade disc is used for being installed at one side away from the incoming direction of the air flow. The combined type oil smoke intercepting net disc provided by the invention utilizes the framework disc to intercept pollutants, and utilizes the cyclone generated when the fan blade disc rotates to separate the pollutants, so that the filtering efficiency is better compared with the traditional framework type intercepting disc; meanwhile, the fan blades of the net disc have a one-way driving function on the airflow; under certain conditions, the fan blade disc drives the airflow, a fan in the system can be partially or completely replaced, and compared with the traditional wire mesh type intercepting disc and the traditional plate mesh type intercepting disc, the rigidity of the framework spokes and the fan blade-shaped spokes is better, and the advantages of the existing intercepting discs are integrated.

Description

Combined type oil smoke interception net disc, range hood and no fan oil smoke machine

Technical Field

The invention relates to the technical field of industrial oil mist and commercial oil fume filtration, in particular to a composite oil fume intercepting screen disc, a range hood and a fan-free range hood.

Background

The intercepting disc is one of the most important structural components in the range hood, influences the filtration efficiency of the range hood, the maintenance and repair cycle of the range hood, the service life of the range hood and the like, and the common structural forms are three, namely: wire mesh type intercepting disc, plate mesh type intercepting disc and framework type intercepting disc.

Wherein, the structure of the wire mesh type intercepting disc is shown in figure 1, and comprises: filter screen silk 1, screen disc support body 2 and position sleeve 3, screen disc support body 2 includes wheel rim 17 and fixed chuck 4, and wheel rim 17 is through radial strengthening rib 6 fixed connection on fixed chuck 4, and the contained angle between two radial strengthening ribs 6 is an, and the scope of contained angle an is 30 ~ 45.

The structure of the plate-net type intercepting pan is shown in fig. 2 and 3, and comprises: a front plate 3 (as shown in fig. 2) and a rear plate 6 (as shown in fig. 3), wherein the front plate 3 and the rear plate 6 are respectively provided with a front through hole 4 and a rear through hole 7, and the front through hole 4 and the rear through hole 7 are respectively formed by punching a thin plate used as the front plate 3 and the rear plate 6.

As shown in fig. 4 and 5, the skeleton-type intercepting pan includes: a first filter 1 and a second filter 2. The first filter screen 1 is connected with a first driving structure and can rotate under the driving of the first driving structure; second filter screen 2 with first filter screen 1 relative setting, second filter screen 2 is connected with second drive structure, can rotary motion is done under the drive of second drive structure, first filter screen 1 with all be provided with brush hair 8 on second filter screen 2, and set up first filter screen 1 or second filter screen 2 the head top of brush hair 8 is in second filter screen 2 or on the wire side of first filter screen 1.

The wire mesh type intercepting disc has small filtering gap, high probability of friction and collision with pollutant molecules, moderate separation efficiency, easy blockage, poor rigidity and unsatisfactory continuous separation effect; the filtering gap of the plate-net type intercepting disc is moderate, the spiral spoke separation efficiency is moderate, but the spiral spoke separation efficiency is easy to block and the rigidity is poor; the two catch disks are the mainstream catch disks in the current market and occupy nearly 90% of the current market sales volume. Compared with the two intercepting discs, the framework type intercepting disc has relatively good rigidity, but has large filtering clearance, small probability of friction and collision with pollutant molecules, easy occurrence of air leakage, and the separation efficiency and effect are the worst of the three structures.

It can be seen that the existing three intercepting discs respectively have advantages and disadvantages, the filtering effect is good but the rigidity is poor, the rigidity is good but the filtering effect is not good, and how to integrate the advantages of the existing intercepting discs ensures that the filtering effect is ensured while the rigidity of the intercepting discs is good becomes a technical problem to be solved urgently at present.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a combined type oil smoke intercepting screen disc, a range hood and a fan-free range hood, and aims to integrate the advantages of the existing intercepting disc, so that the intercepting disc has good rigidity and ensures the filtering effect.

The technical scheme of the invention is as follows:

a composite oil smoke intercepting net disk, which comprises: skeleton dish and flabellum dish, the skeleton dish includes the skeleton spoke that a plurality of circumference was arranged, the flabellum dish includes the flabellum shape spoke that a plurality of circumference was arranged, the skeleton dish is used for installing and comes to one side near the air current, the flabellum dish is used for installing and comes to one side deviating from the air current.

In a further preferred scheme, one end, close to the middle of the framework disc, of each framework spoke deviates from the fan blade disc, and one end, close to the edge of the framework disc, of each framework spoke is close to the fan blade disc.

In a further preferred embodiment, the skeleton spokes are arc-shaped, and the bent portions are arranged away from the blade disc.

In a further preferred scheme, a fixing plate is arranged in the middle of the framework disc, the middle of the fixing plate is sunken towards the fan blade disc and is provided with a shaft hole, and the framework disc is connected with the fan blade disc through the shaft hole in a shaft mode.

In a further preferred scheme, the skeleton disc comprises inner ring spokes and outer ring spokes, and isolation rings are arranged between the inner ring spokes and the outer ring spokes.

In a further preferred version, the number of inner ring spokes is less than the number of outer ring spokes.

In a further preferred scheme, the height of the outer ring spoke is increased from one end close to the outer edge of the framework disc to one end close to the outer edge of the framework disc.

In a further preferred version, the height of the inner ring spokes ranges from 9mm to 15 mm.

In a further preferred embodiment, the end of the fan-shaped spoke close to the middle of the fan-shaped disk faces away from the skeleton disk, and the end close to the edge of the fan-shaped disk is close to the skeleton disk.

In a further preferred embodiment, the fan-shaped spokes are curved and the curved portion is arranged away from the skeleton disk.

In a further preferred scheme, the width of the fan-shaped spokes increases from one end close to the middle of the fan-shaped disc to one end close to the edge of the fan-shaped disc.

In a further preferred embodiment, at least one of the skeleton disk and the fan blade disk is made of ABS material.

In a further preferred embodiment, the fan blade disc is used for connecting a dc motor.

In a further preferred scheme, the combined type oil smoke intercepting mesh disc further comprises: the barrel is sleeved on the outer edge of at least the fan blade disc.

A range hood comprises the composite oil smoke intercepting net disc. Therefore, the range hood can have all the characteristics and effects of the combined type oil smoke intercepting net disk, and the description is omitted.

A ventilator-less lampblack absorber comprising the composite lampblack intercepting screen disc as claimed in the claim, wherein the fan disc in the composite lampblack intercepting screen disc is used for driving airflow to pass through the framework disc and the fan disc in sequence. Therefore, the range hood can have all the characteristics and effects of the combined type oil smoke intercepting net disk, and the description is omitted.

Compared with the prior art, the combined type oil smoke intercepting net disc provided by the invention comprises: skeleton dish and flabellum dish, the skeleton dish includes the skeleton spoke that a plurality of circumference was arranged, the flabellum dish includes the flabellum shape spoke that a plurality of circumference was arranged, the skeleton dish is used for installing and comes to one side near the air current, the flabellum dish is used for installing and comes to one side deviating from the air current. The combined type oil smoke intercepting net disc provided by the invention utilizes the framework disc to intercept pollutants, and utilizes the cyclone generated when the fan blade disc rotates to separate the pollutants, so that the filtering efficiency is better compared with the traditional framework type intercepting disc; meanwhile, the fan blades of the net disc have a one-way driving function on the airflow; under certain conditions, the fan blade disc drives the airflow, a fan in the system can be partially or completely replaced, and compared with the traditional wire mesh type intercepting disc and the traditional plate mesh type intercepting disc, the rigidity of the framework spokes and the fan blade-shaped spokes is better, and the advantages of the existing intercepting discs are integrated.

Drawings

Fig. 1 is a schematic structural view of a prior art wire mesh type intercepting pan.

Fig. 2 is a schematic structural view of a front side plate used in a plate-net type intercepting pan in the prior art.

Fig. 3 is a schematic structural view of a rear side plate used in a mid-plate type intercepting pan in the prior art.

Fig. 4 is a schematic structural diagram of a range hood with a framework-type intercepting plate in the prior art.

Fig. 5 is a schematic view showing the structure of a first filter used in a prior art framework type intercepting pan.

Fig. 6 is a schematic structural view of the composite oil smoke intercepting screen disc of the present invention.

Fig. 7 is an exploded view of the composite soot intercepting screen disc of the present invention.

Fig. 8 is an enlarged view of a portion a in fig. 7.

Fig. 9 is a first perspective view of a framework plate for an intercepting net plate according to the present invention.

Fig. 10 is a second perspective view of the framework plate for the intercepting net plate according to the present invention.

Fig. 11 is a schematic view of parameters of an intercepting surface of two adjacent spokes of a conventional skeleton-type intercepting disk.

FIG. 12 is a schematic view of parameters of the intercepting surfaces of two adjacent framework spokes according to the present invention.

Fig. 13 is a first view structural diagram of a fan disc for an intercepting screen disc according to the present invention.

Fig. 14 is a second perspective view of a fan disc for an intercepting screen disc according to the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Pollutants in the oil smoke are mostly sticky particles, when a certain sticky particle is adhered to a certain position of the intercepting disc, other sticky particles and non-sticky particles are continuously adhered, and finally, the pollutants are scaled at the position (similar to a snowball effect). Because the mass of the wire mesh type intercepting disc and the mass of the plate mesh type intercepting disc are smaller, once a certain part is scaled, the dynamic balance of the wire mesh type intercepting disc and the plate mesh type intercepting disc is greatly influenced, and the dynamic balance is unbalanced. Therefore, the wire mesh type intercepting pan and the plate mesh type intercepting pan have the defects of low rigidity and high maintenance and repair frequency, but because the wire mesh is extremely fine (the same principle is applied to the plate mesh), the wire mesh type intercepting pan and the plate mesh type intercepting pan are not only troublesome to clean but also easy to hurt hands of users, and more importantly, the wire mesh type intercepting pan and the plate mesh type intercepting pan are deformed by dirt with excessive weight, so that the defects are extremely large.

The framework type intercepting disc is obviously not greatly influenced by scaling, and the reason is that compared with the wire mesh type intercepting disc and the plate mesh type intercepting disc, the framework type intercepting disc has larger gaps between spokes and smaller scaling probability, the framework type intercepting disc has larger mass, the weight of a scale body is larger than that of the framework type intercepting disc, and the dynamic balance is basically not influenced. But the interception effect is not good, so the utility model is not popular with consumers and the sales volume is not good.

If the advantages of the three intercepting discs can be integrated, a better intercepting effect can be kept under the condition that the rigidity of the intercepting discs is ensured, the service life of the intercepting discs can be prolonged (the deformed wire mesh type intercepting discs and the deformed plate mesh type intercepting discs cannot be repaired basically and need to be scrapped), the cleaning frequency of the intercepting discs can be reduced, the cleaning convenience of the intercepting discs is improved, and the sales volume of the range hood is increased.

Therefore, the present invention provides a composite oil smoke intercepting net disk, as shown in fig. 6 and 7, comprising: skeleton dish 200 and flabellum dish 300, skeleton dish 200 is used for installing and comes to one side near the air current, flabellum dish 300 is used for installing and deviates from the air current and comes to one side, that is to say, the air current will pass through skeleton dish 200 and flabellum dish 300 in proper order, and after skeleton dish 200 filtered the air current, flabellum dish 300 will carry out the secondary separation of pollutant to the air current after the first filtration. The skeleton disk 200 includes a plurality of skeleton spokes arranged circumferentially, and the fan blade disk 300 includes a plurality of fan blade-shaped spokes 320 arranged circumferentially, as shown in fig. 13 and 14.

It is emphasized that the currently available wire-mesh intercepting discs are basically divided into seven parts by interception and three parts by disturbance (disturbing airflow to realize the separation of pollutants and gas) when the pollutants are separated; the plate-net type intercepting disc is divided into six parts by interception and four parts by disturbance, and compared with other two intercepting discs, the skeleton type intercepting disc has larger difference, and the components occupied by disturbed airflow are far larger than those of intercepted separation.

The fan blade disc 300 adopted by the invention is completely different from the three intercepting discs, the fan blade disc utilizes the principle of rotation separation, and because fan blade-shaped spokes capable of driving air flow are added, the air flow can be actively driven, the air flow speed is improved, the high-speed air flow collides and rubs with the inner wall (shown in figures 6 and 7) of the cylinder body 100, and the filtering effect of the intercepting screen disc is further improved. That is to say, the skeleton disk in the invention mainly depends on the mechanism of disturbing air flow and intercepting particulate matters to carry out primary filtration of air, the particles separated by disturbance are thrown to the edge of the cylinder under the action of centrifugal force, and are separated from the air flow after multiple times of friction and collision; the intercepted and separated particles move to the edge of the framework disc along the framework spokes (the framework disc has low scale formation probability, and because the scale increases the collision frequency and probability of the interception disc and the particles, the scale formation can improve the particle interception efficiency of the framework disc on the contrary, and when the scale is large enough, the scale is separated from the framework disc in high-speed rotation, so the required cleaning frequency of the framework disc is extremely low); the fan blade disc has the main function of driving airflow as described above, so that the purification efficiency of the whole intercepting screen disc is improved, and for the range hoods with few filter levels (some range hoods need to add other filter mechanisms, such as electrostatic filter mechanisms, which are called as range hoods with multiple filter levels) the arrangement of the fan blade disc can completely omit the arrangement of a negative pressure fan at the rear end, and for the range hoods with multiple filter levels, the pressure difference which is continuously lost can be offset, so that the negative pressure fan at the rear end is partially replaced (the required power or the number of the negative pressure fans is reduced, and the like).

Preferably, the blade disc of the present invention is further used for connecting a dc motor, and it should be noted here that the conventional intercepting disc is often driven by an ac motor, and here, the ac motor is replaced by the dc motor, and on the one hand, the use of a capacitor is eliminated, so that the problem of rotation speed attenuation caused by the change of the capacitive energy can be effectively avoided; the rotating speed of the direct current motor can reach 2600 revolutions or even 3600 revolutions, and is even higher (the high rotating speed improves the airflow driving capability of the fan blade disc, and the effect is better); and thirdly, the noise is smaller, and the influence of the noise of the alternating current motor on the environment is avoided.

In the preferred embodiment of the present invention, the specific shape of the fan-shaped spokes 320 is not limited in this invention, and the rotating blades of the commercially available fans can be used in the fan disc 300 according to the present invention after being adjusted in size according to the installation space, and besides, spokes with other structures that can disturb the airflow and make the pollutant particles can also be used as the fan-shaped spokes 320 in the present invention.

The fan blade disc 300 can drive airflow except the effect of disturbing and separating pollutant particles, namely, the airflow flows from the outside to the deep part of the range hood, the effect of the fan and the negative pressure fan in the traditional range hood is replaced, the range hood can be omitted by the fan or the negative pressure fan, the cost is saved, the requirement of the installation space of the range hood is reduced, and the trouble of cleaning the fan of the traditional range hood is omitted.

The skeleton disk 200 may be a disk of a conventional skeleton intercepting disk, such as the lower intercepting layer 502 and the upper intercepting layer 505 of fig. 4, but preferably has the following structure: the end of the skeleton spoke near the middle of the skeleton disk 200 is away from the fan blade disk 300, and the end near the edge of the skeleton disk 200 (i.e. the end connected with the outer ring body 210) is near the fan blade disk 300. That is, preferably skeleton spoke slope sets up, and skeleton dish 200 evagination (the middle part is to keeping away from fan disc 300 one side protrusion), under the unchangeable condition of installation width, the skeleton spoke length that the slope set up is greater than spoke length in lower floor's interception layer 502, and spoke length value is big more, and is also big more with pollutant particle's collision probability, and is corresponding, and skeleton dish 200's filter effect is also better.

In specific implementation, the same obliquely arranged skeleton spokes have various available shapes, such as strip spokes (that is, the whole skeleton spoke has no bend), such as regular arc spokes (specifically, there are two structures, the bent portion is close to the fan blade disc 300, and the bent portion is away from the fan blade disc 300), and such as irregular spoke shapes (this situation has too much possibility, cannot be exhausted, and is not described any more).

Preferably, the frame spokes are arc-shaped with the curved portion disposed away from the blisk 300; the effect of this setting lies in: under the condition that the diameter of the skeleton disk 200 is unchanged, the length of the spokes is further increased, and the filtering effect of the skeleton disk 200 is improved (under the condition that the distance between two points is unchanged, the length of an arc line is larger than that of a straight line).

In practice, a wide variety of materials may be used for the backbone disc 200 and the fan disc 300, such as metal materials used in conventional interceptor discs, or hard plastics with moderate strength and stiffness. In a further preferred embodiment, the present invention preferably uses ABS plastic, which is wear-resistant, has high strength, can resist high temperature of 200 degrees, can meet most of the requirements of working conditions, and has very high safety, and even under high-speed rotation, the framework disc 200 is touched by hand and still will not be damaged (the silk screen type interception disc has thin silk threads, the plate screen type interception disc has small thickness, even under non-rotation state, still easily hurt hand, and has very great safety difference from the interception disc provided by the present invention). Of course, other materials may be selected by those skilled in the art according to the working conditions, and the present invention is not particularly limited.

According to another aspect of the present invention, a fixing plate is disposed in the middle of the frame plate 200, the middle of the fixing plate is recessed toward the fan blade plate 300 and is provided with a shaft hole 260, and the frame plate 200 is connected to the fan blade plate 300 through the shaft hole 260. The purpose of this setting lies in shortening the axial length of connecting axle, material saving, more importantly, under the unchangeable condition of other conditions, improves the rigidity and the intensity of connecting axle. The middle portion of the skeleton disk 200 does not substantially participate in the filtering of contaminant particles, and therefore, the arrangement of the fixation plate does not reduce the filtering effect of the skeleton disk 200. Specifically, a slope is disposed between the inner ring and the outer ring of the recessed portion 250, and the airflow flowing to the recessed portion 250 enters the filtering region (i.e., the framework spoke installation region) along the slope.

As shown in fig. 7 and 8, preferably, the frame plate 200 and the fan blade plate 300 are coaxially arranged, the frame plate 200 is connected with the fan blade plate 300 through a connecting shaft 420 and a nut 410, when cleaning is needed, the frame plate 200 can be easily detached by manually screwing the nut 410, and the whole intercepting screen plate can be completely detached to clean each part, so that the convenience is very high.

Preferably, the skeleton disk 200 includes an inner ring spoke 220 and an outer ring spoke 240, and a spacer 230 is disposed between the inner ring spoke 220 and the outer ring spoke 240.

Further, the number of inner ring spokes 220 is less than the number of outer ring spokes 240.

The height of the inner ring spokes 220 is preferably in the range of 9mm to 15 mm (which may be scaled up according to specifications), in particular 13 mm. The height of the outer ring spoke 240 increases from the end near the outer edge of the skeleton disk 200 to the end near the outer edge of the skeleton disk 200, i.e., the height decreases toward the outside (preferably, the height of the outer ring spoke 240 facing the end of the inner ring spoke 220 is equal to the height of the inner ring spoke 220); the reason for the arrangement is that the tangential speed of the inner edge is slow, the tangential speed of the outer edge is fast, and in order to ensure the balance of the intercepting effect, the height of the spokes gradually changes from inside to outside; meanwhile, the device can also play a role in strengthening rigidity.

It should be noted that the setting of the spoke size is not a simple adjustment, the larger the height value of the skeleton spoke is, the larger the number and probability of intense friction and collision with pollutant particles are, and the average value of the interception surface height of the planar spoke (i.e. the conventional spoke) and the average value of the interception surface height of the three-dimensional spoke (i.e. the skeleton spoke in the present invention) can be calculated by referring to the two simple calculation models as follows:

as shown in fig. 11, a single planar spoke has a section height H, an angular velocity ω, and a distance M between two spokes (x1 and x2 are the two spokes, respectively), and the time required when spoke 1 rotates to spoke 2 is T1. And the time for the pollutant molecules in the air flow to pass through the spokes is T2 ═ H/V₀(ii) a Therefore, the pollutant molecules in the gas flow can be effectively intercepted and separated by the spokes when T2 is more than T1.

As shown in fig. 12, 280a and 280b represent two adjacent solid spokes, respectively, and the solid spokes have an arc-shaped structure, and have a minimum section h of 5mm and a maximum section h of 13mm, so that the average value is 9 mm. While the section H of the planar spokes is 0.85 mm. Therefore, when M is M and ω is the same, and T2 is greater than T1, H is greater than H, the time for pollutant molecules in the air flow of the three-dimensional spokes to pass through the spokes is longer than that of the planar spoke, and therefore the interception effect of the three-dimensional spokes is far better than that of the planar spokes.

Minimum section height M of single three-dimensional spoke₁Maximum cross-sectional height M of 6mm₂16mm, and 11mm of average section height M; minimum linear velocity V of three-dimensional spoke₀7.54m/s, maximum linear velocity V₀20.11m/s, and 13.825 m/s. And the speed of the intake air is V₀Less than or equal to 4 m/s. The structure of the three-dimensional spoke can be obtained through calculation, and the interception effect is better.

In practical application, the root of the inner ring spoke 220 facing the side of the disk 300 is provided with a rib 270, as shown in fig. 10, to reinforce the strength of the inner ring spoke 220.

When the air current gets into first layer three-dimensional interception spoke, three-dimensional arc spoke under high-speed effect, the molecule of big granule will adhere on the spoke with the production friction and the collision of the molecule that needs to intercept many times repeatedly, then under the effect of centrifugal force, get rid of on the inner wall of shell, and at last under the effect of gravity, the gathering is in the lowest of shell, and the collection is unified, and this structure can reach 30% ~ 40% separation treatment effect.

According to another aspect of the invention, the fan-shaped spokes 320 are directed away from the skeleton disk 200 near the middle of the disk and are directed towards the skeleton disk 200 near the edge of the disk. That is, the fan-shaped spokes 320 are obliquely arranged, and the middle part of the fan-shaped disk 300 protrudes away from the skeleton disk 200, the length of the obliquely arranged fan-shaped spokes 320 is greater than that of the spokes in the lower interception layer 502, and the larger the length value of the spokes is, the greater the collision probability with the pollutant particles is, and accordingly, the better the filtering effect of the fan-shaped disk 300 is.

Further, the fan-shaped spokes 320 are arc-shaped, and the bending parts are arranged away from the skeleton disk 200, and the setting has the following effects: under the condition that the diameter of the fan blade disc 300 is not changed, the length of the fan blade-shaped spokes 320 is further increased, and the filtering effect of the fan blade disc 300 is improved (under the condition that the distance between two points is not changed, the arc length is larger than a straight line).

Preferably, the width of the fan-shaped spokes 320 increases from the end near the middle of the fan-shaped disc to the end near the edge of the fan-shaped disc; the air flow can be better driven by the arrangement, and the air speed of the air flow reaches the optimal speed of cyclone separation.

Preferably, the middle of the fan blade disc 300 is provided with a receiving groove 330, as shown in fig. 14, the opening direction of the receiving groove 330 is away from the skeleton disc 200, and the middle is provided with a shaft hole; this holding tank 330 is used for holding the motor, and the motor drives flabellum dish 300 and skeleton dish 200 and rotates, can realize that fan or negative-pressure air fan's effect in traditional lampblack absorber when realizing that the interception filters and the disturbance is filterable, saves the setting of fan.

The outer rim body 310 is disposed at the edge of the fan blade disc 300, as shown in fig. 13, the outer rim body 310 may be engaged with or connected to the outer rim body 210 at the edge of the skeleton disc 200 by other methods.

A range hood comprises the composite oil smoke intercepting net disc. Therefore, the range hood can have all the characteristics and effects of the combined type oil smoke intercepting net disk, and the description is omitted.

The utility model provides a no fan oil smoke machine, its includes as above combined type oil smoke interception net dish, and need not to set up the fan, flabellum dish in the combined type oil smoke interception net dish is used for driving the air current, makes the air current pass through skeleton dish and flabellum dish in proper order. Therefore, the range hood can have all the characteristics and effects of the combined type oil smoke intercepting net disk, and the description is omitted.

It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.

Claims (16)

1. The utility model provides a combined type oil smoke interception net dish which characterized in that includes: skeleton dish and flabellum dish, the skeleton dish includes the skeleton spoke that a plurality of circumference was arranged, the flabellum dish includes the flabellum shape spoke that a plurality of circumference was arranged, the skeleton dish is used for installing and comes to one side near the air current, the flabellum dish is used for installing and comes to one side deviating from the air current.

2. The composite soot intercepting screen of claim 1, wherein the ends of the spokes of the skeleton that are close to the middle of the skeleton pan are away from the louver pan, and the ends that are close to the edge of the skeleton pan are close to the louver pan.

3. The composite soot intercepting screen of claim 2, wherein the spokes of the skeleton are arc-shaped and the curved portion is disposed away from the fan blade disc.

4. The composite oil smoke intercepting screen disc of claim 1, wherein a fixing plate is disposed in the middle of the frame disc, the middle of the fixing plate is recessed toward the fan disc and is provided with a shaft hole, and the frame disc is connected with the fan disc through the shaft hole.

5. The composite lampblack intercepting mesh disc as claimed in any one of claims 1 to 4, wherein the skeleton disc comprises inner ring spokes and outer ring spokes, and isolation rings are arranged between the inner ring spokes and the outer ring spokes.

6. The composite soot intercepting screen of claim 5, wherein the number of spokes of said inner ring is less than the number of spokes of said outer ring.

7. The composite soot intercepting screen of claim 5, wherein the outer spokes have a height that increases from the end near the outer edge of the skeleton disk to the end near the outer edge of the skeleton disk.

8. The composite soot intercepting screen of claim 5, wherein the height of the spokes of the inner ring ranges from 9mm to 15 mm.

9. The composite soot intercepting screen of claim 1, wherein the ends of the fan-shaped spokes near the middle of the fan-shaped disc are away from the skeleton disc, and the ends near the edge of the fan-shaped disc are near the skeleton disc.

10. The composite soot intercepting screen of claim 9, wherein the fan-shaped spokes are curved and the curved portion is disposed away from the skeleton disk.

11. The composite soot intercepting screen of claim 9, wherein the width of the fan-shaped spokes increases from the end near the middle of the fan-shaped disc to the end near the edge of the fan-shaped disc.

12. The composite soot intercepting screen of claim 1, wherein at least one of the skeleton disk and the fan blade disk is made of ABS material.

13. The composite soot intercepting screen of claim 1, wherein said fan blade tray is configured to be connected to a dc motor.

14. The composite soot intercepting screen of claim 1, further comprising: the barrel is sleeved on the outer edge of at least the fan blade disc.

15. A range hood, characterized by comprising the composite oil smoke intercepting screen disc of any one of claims 1 to 14.

16. A ventilator-free oil smoke machine, comprising the composite oil smoke intercepting screen disc as claimed in any one of claims 1 to 14, wherein the fan disc of the composite oil smoke intercepting screen disc is used for driving the airflow to pass through the framework disc and the fan disc in sequence.

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