CN104289049A - Filtering screen and range hood - Google Patents

Abstract

The invention provides a filtering screen and a range hood. The filtering screen comprises an outer rectifying layer and an inner filtering layer, wherein a first through hole is formed in the outer rectifying layer; a plurality of rectifying plates which are arranged in parallel are arranged in the first through hole; the inner filtering layer is positioned on the inner side of the outer rectifying layer; a plurality of filtering screen holes are formed in the inner filtering layer. The filtering screen can effectively divide, rectify and guide airflow passing through the outer rectifying layer through the plurality of rectifying plates which are arranged in parallel and arranged on the outer rectifying layer, reduces the amount of turbulence in the airflow, forms smooth airflow to enter a range hood body, effectively prevents problems that turbulence is produced in the range hood body, and noise is caused by the collision between the turbulence and the inner wall of the range hood body, and has good oil fume filtering effect through the plurality of filtering screen holes formed in the inner filtering layer.

Description

Filters and range hoods

technical field

The invention relates to the field of kitchen utensils, and more specifically, to a filter screen and a range hood including the filter screen.

Background technique

The filter screen of the range hood is installed at the air inlet of the range hood. It is one of the core components of the range hood. Layers of staggered filter screens are used for enhanced smoke filtration. Secondly, the existing condensing plate can also replace the filter screen to realize the functions of smoke filter and oil guide.

In the prior art, the following two schemes are mainly used to realize the functions of filtering smoke and guiding oil. One is to use a condensation plate structure, which is installed at the air inlet of the range hood to condense the oil fume and guide the condensed oil into the oil cup. The other is to use a filter with a double U mesh structure, so that when the oil fume passes through the double U mesh, the oil fume can be separated by the collision between the oil fume and the sheet metal parts of the range hood. However, the use of the condensing plate structure cannot effectively guide the airflow, which makes the airflow at the air inlet of the range hood chaotic and the wind speed is low, and it is easy to cause turbulent flow and noise inside the body; the double U mesh structure is adopted, The structure of the filter screen is complicated and difficult to clean.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art.

Therefore, an object of one aspect of the present invention is to provide a filter that can effectively separate and rectify the airflow, thereby reducing the noise inside the body.

Another object of the present invention is to provide a range hood comprising the above filter.

In order to achieve the above object, an embodiment of one aspect of the present invention provides a filter net, comprising: an outer rectifying layer, on which a first through hole is opened, and a plurality of rectifying plates arranged in parallel are arranged in the first through hole and an inner filter layer, located on the inner side of the outer rectifying layer, and the inner filter layer is provided with a plurality of filter mesh holes.

The filter screen provided by the above-mentioned embodiments of the present invention includes an outer rectifying layer and an inner filter layer, and a first through hole is provided on the outer rectifying layer, and a plurality of rectifying plates arranged in parallel are arranged in the first through hole, which can pass through The airflow in the outer rectifying layer is effectively separated, rectified and guided to reduce turbulence and turbulence in the airflow and form a smooth airflow, effectively avoiding turbulence and turbulence after the airflow enters the body, and the turbulence and turbulence caused by turbulence and turbulence. The noise and other problems caused by the collision between the inner walls of the body, compared with the traditional technology of using the condensation plate structure to filter smoke, effectively avoids the air flow disorder caused by the condensation plate cannot effectively guide the air flow, and the body The occurrence of problems such as large internal noise; through the arrangement of multiple filter mesh holes on the inner filter layer, combined with the setting of the outer rectification layer, a good smoke filtering effect can be achieved.

In addition, the filter net provided according to the above-mentioned embodiments of the present invention also has the following additional technical features:

According to an embodiment of the present invention, along the direction from outside to inside, the gap between two adjacent rectifying plates first decreases and then increases or the gap between two adjacent rectifying plates decreases gradually.

In the above embodiment, along the direction from outside to inside, the gap between two adjacent rectifying plates first decreases and then increases or the gap between two adjacent rectifying plates gradually decreases, so that the Venturi can be fully utilized The inner effect increases the flow velocity of the airflow entering the outer rectifying layer, thereby increasing the smoke filtering speed of the filter, and facilitating the smooth discharge of the filtered gas to the outside.

According to an embodiment of the present invention, the left and right sides of the rectifying plates are arc-shaped, and along the direction from outside to inside, the gap between two adjacent rectifying plates first decreases and then increases.

In the above embodiments, the left and right sides of the rectifying plates are arc-shaped, and along the direction from outside to inside, the gap between two adjacent rectifying plates decreases first and then increases, so that the Venturi effect can be fully utilized, and the gas When flowing through the space where the gap is reduced, the flow velocity increases, the dynamic pressure increases, and the static pressure decreases. The amount of oil fume is reduced, so that the filtered gas can be discharged to the outside smoothly.

According to an embodiment of the present invention, the windward surface of the rectifying plate is an outwardly convex arc surface.

In the above embodiment, the windward surface of the rectifying plate is an outwardly convex arc surface, and the two ends of the arc surface are inclined inward, so that the airflow can flow along the outwardly convex arc surface and smoothly enter the external rectification layer, thereby increasing the air flow into the outer rectifying layer, so that the oil fume can be absorbed by the filter faster and the filtered gas is discharged to the outside, which can effectively prevent the rectifying plate with the windward side as a plane, which is caused by the barrier of the plane. The problem of low air flow into the outer fairing layer.

According to an embodiment of the present invention, the outer rectifying layer is generally in the shape of an arc convex outward.

In the above-mentioned embodiment, the outer rectifying layer is in the shape of an arc convex outward as a whole. Compared with the outer rectifying layer which is generally planar, the arc-shaped outer rectifying layer can increase its air intake area, so that more directions Soot can enter the outer rectifying layer, which increases the air intake.

According to an embodiment of the present invention, the inner filter layer is in a planar shape, and the plurality of filter mesh holes are in a hexagonal shape.

In the above embodiment, the inner filter layer is flat, and the plurality of filter mesh holes are hexagonal, which can simplify the structure while ensuring the air intake area, and the flat inner filter layer is easy to clean, which effectively solves the problem of traditional technology. The structure of the filter net caused by the double U net structure is complex and difficult to clean.

According to an embodiment of the present invention, the upper and lower sides of the outer rectifying layer are provided with ribs, and the upper and lower sides of the inner filter layer are correspondingly provided with first grooves, and the ribs are inserted into the first In the groove, the inner filter layer is supported on the ribs.

In the above embodiment, the upper and lower sides of the outer rectifying layer are provided with ribs, and the upper and lower sides of the inner filter layer are correspondingly provided with first grooves, and the ribs can be inserted into the first grooves, so that the inner filter layer can Supported on the ribs, the inner filter layer is limited between the ribs on the outer rectifying layer, so as to realize the firm assembly of the outer rectifying layer and the inner filter layer, and the structure is simple, which is convenient for disassembly and installation of the inner filter layer .

According to an embodiment of the present invention, the outer rectifying layer is detachably fixed on the installation part through an elastic buckle.

According to an embodiment of the present invention, the elastic buckle includes: a support seat, which is fixedly connected with the installation part, and a stepped through hole is provided on the support seat; a push pin is inserted into the stepped pass In the hole, and one end of the ejector pin abuts against the stepped surface of the stepped through hole, and the other end extends out of the stepped through hole, and the rib of the outer rectifying layer is provided with a second groove , the other end of the ejector pin extends into the second groove; a spring; one end of the spring abuts against one end of the ejector pin; and a cover, the cover is fixed on the support seat , and cover the stepped through hole, and the other end of the spring leans against the cover.

In the above-mentioned embodiment, the outer rectifying layer is detachably fixed on the installation part through elastic buckles, which facilitates the smooth installation or removal of the outer rectifying layer on the installation part, thereby facilitating the disassembly and cleaning of the inner filter layer; specifically Ground, the elastic buckle includes a support seat, a push pin, a spring and a cover body, and a stepped through hole is provided on the support seat, and a second groove is provided on the rib of the outer rectifying layer, so that one end of the push pin rests against the On the step surface of the step through hole, the other end protrudes from the step through hole and extends into the second groove, so as to realize the firm assembly of the support seat and the outer rectifying layer, and the support seat is fixedly connected with the mounting part, thereby realizing the elastic clip The buckle securely assembles the outer rectifying layer to the mounting part; by setting a spring between the top pin and the cover, one end of the spring abuts against one end of the top pin, and the other end abuts against the cover, so that the elastic force of the spring The function realizes the firm assembly of the outer rectifying layer and the mounting part, and the ejector pin can compress the spring to retract, and then separate from the second groove, so that the outer rectifying layer can be smoothly installed on or removed from the mounting part.

According to an embodiment of the present invention, the rib protrudes toward the inner side of the outer rectifying layer, and the second groove is opened on the rib.

In the above-mentioned embodiment, by protruding the ribs to the inner side of the outer rectifying layer, and the second groove is set on the ribs, since the upper and lower ends of the outer rectifying layer are provided with ribs, the upper and lower ribs are matched with each other. The top pin supports the outer rectification layer, which realizes the fixing of the outer rectification layer and the installation parts; the convex rib protrudes to the inner side of the outer rectification layer, on the one hand, it is convenient to support the inner filter layer, on the other hand, it makes the appearance of the outer rectification layer beautiful.

According to an embodiment of the present invention, a bracket is provided on the mounting part, and the bracket is fixedly connected with the support base. The seat screw holes are used to fix the bracket and the support seat by screws.

According to an embodiment of the present invention, the bracket is provided with buckles, the support seat is provided with a third groove, and the buckle is limited in the third groove.

In the above embodiment, a bracket is provided on the mounting part, a buckle is provided on the bracket, and a third groove is provided on the support seat, and the positioning of the bracket and the support seat is realized through the cooperation of the buckle and the third groove. , and then the bracket can be fixedly connected to the support base through screws, so that the outer rectifying layer can be firmly installed on the installation part through the setting of the bracket and the support base.

In the above embodiment, the outer rectifying layer is assembled to the installation part through the elastic buckle and the bracket. When disassembling, it is only necessary to disconnect the ejector pin of the elastic buckle from the second groove of the outer rectifying layer, and the outer rectifying layer and the outer rectifying layer can be realized. The inner filter layer fixedly connected with the outer rectifying layer is removed from the installation parts, which makes the disassembly and installation of the filter screen more convenient; because the inner filter layer is supported on the ribs of the outer rectifying layer, the inner filter layer can be easily removed from the outer rectifying layer It is easy to disassemble and clean the inner filter layer.

An embodiment of another aspect of the present invention provides a range hood, including the filter screen described in any one of the above embodiments, the filter screen is fixed on the deflector of the range hood, and has the above-mentioned embodiment All the beneficial effects of the filter described in the example.

Additional aspects and advantages of the invention will become apparent in the description which follows, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and comprehensible from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a schematic diagram of the assembly structure of the filter screen and the installation parts according to an embodiment of the present invention;

Fig. 2 is a schematic diagram of an exploded structure of Fig. 1;

Fig. 3 is an enlarged schematic diagram of the structure of part A of Fig. 2;

Fig. 4 is a schematic diagram of an exploded structure of the elastic buckle in Fig. 3;

Fig. 5 is a schematic cross-sectional structure diagram of Fig. 1;

Fig. 6 is an enlarged schematic diagram of the structure of part B of Fig. 5;

Fig. 7 is a schematic structural view of the outer rectifying layer shown in Fig. 2;

Fig. 8 is a schematic diagram of a cross-sectional structure along the direction C-C of Fig. 7;

Fig. 9 is an enlarged schematic diagram of the structure of part E of Fig. 8, wherein the arrows indicate the flow direction of the airflow;

FIG. 10 is a schematic diagram of a cross-sectional structure along the line D-D of FIG. 7 .

Wherein, the corresponding relationship between reference numerals and component names in Fig. 1 to Fig. 10 is:

1 filter screen, 10 outer rectifying layer, 100 first via hole, 101 rectifying plate, 102 convex rib, 1020 second groove, 20 inner filter layer, 200 filter mesh hole, 201 first groove, 30 elastic buckle, 300 support seat, 3000 step through hole, 3001 third groove, 3002 support seat screw hole, 301 top pin, 302 spring, 303 cover body, 40 deflector, 50 bracket, 500 buckle, 501 bracket screw hole

Detailed ways

In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways than described here. Therefore, the protection scope of the present invention is not limited by the specific implementation disclosed below. Example limitations.

A filter screen and a range hood provided according to some embodiments of the present invention are described below with reference to the accompanying drawings.

As shown in FIG. 1 and FIG. 2 , a filter screen 1 provided according to some embodiments of the present invention includes: an outer rectifying layer 10 and an inner filter layer 20 .

Wherein, as shown in FIG. 2 and FIG. 7, a first via hole 100 is opened on the outer rectifying layer 10, and a plurality of rectifying plates 101 arranged in parallel are arranged in the first via hole 100;

As shown in FIG. 2 , the inner filter layer 20 is located inside the outer rectifying layer 10 , and the inner filter layer 20 is provided with a plurality of filter mesh holes 200 .

The filter screen provided by the above-mentioned embodiments of the present invention includes an outer rectifying layer and an inner filter layer, and a first through hole is provided on the outer rectifying layer, and a plurality of rectifying plates arranged in parallel are arranged in the first through hole, which can pass through The airflow in the outer rectifying layer is effectively separated, rectified and guided to reduce turbulence and turbulence in the airflow and form a smooth airflow, effectively avoiding turbulence and turbulence after the airflow enters the body, and the turbulence and turbulence caused by turbulence and turbulence. The noise and other problems caused by the collision between the inner walls of the body, compared with the traditional technology of using the condensation plate structure to filter smoke, effectively avoids the air flow disorder caused by the condensation plate cannot effectively guide the air flow, and the body The occurrence of problems such as large internal noise; through the arrangement of multiple filter mesh holes on the inner filter layer, combined with the setting of the outer rectification layer, a good smoke filtering effect can be achieved.

Further, along the direction from outside to inside, the gap between two adjacent rectifying plates 101 first decreases and then increases or the gap between two adjacent rectifying plates 101 decreases gradually.

In the above embodiment, along the direction from outside to inside, the gap between two adjacent rectifying plates first decreases and then increases or the gap between two adjacent rectifying plates gradually decreases, so that the Venturi can be fully utilized The inner effect increases the flow velocity of the airflow entering the outer rectifying layer, thereby increasing the smoke filtering speed of the filter, and facilitating the smooth discharge of the filtered gas to the outside.

In a specific example, as shown in FIG. 8 and FIG. 9 , the left and right side surfaces of the rectifying plates 101 are arc-shaped, and along the direction from outside to inside, the gap between two adjacent rectifying plates 101 decreases first. After small increase.

In the above embodiments, the left and right sides of the rectifying plates are arc-shaped, and along the direction from outside to inside, the gap between two adjacent rectifying plates decreases first and then increases, so that the Venturi effect can be fully utilized, and the gas When flowing through the gap reduction, the flow velocity increases, the dynamic pressure increases, and the static pressure decreases. Under the action of atmospheric pressure, more gas can enter the gap between the rectifying plates (the arrow in Figure 9 indicates the flow direction of the airflow) , thus improving the speed of filtering smoke and the amount of oil fume filtered by the filter, and facilitating the smooth discharge of the filtered gas to the outside.

Preferably, as shown in FIG. 10 , the windward surface of the rectifying plate 101 is an outwardly convex arc surface.

In the above embodiment, the windward surface of the rectifying plate is an outwardly convex arc surface, and the two ends of the arc surface are inclined inward, so that the airflow can flow along the outwardly convex arc surface and smoothly enter the external rectification layer, thereby increasing the air flow into the outer rectifying layer, so that the oil fume can be absorbed by the filter faster and the filtered gas is discharged to the outside, which can effectively prevent the rectifying plate with the windward side as a plane, which is caused by the barrier of the plane. The problem of low air flow into the outer fairing layer.

Further, the outer rectifying layer 10 is generally in the shape of an arc convex outward.

In the above-mentioned embodiment, the outer rectifying layer is in the shape of an arc convex outward as a whole. Compared with the outer rectifying layer which is generally planar, the arc-shaped outer rectifying layer can increase its air intake area, so that more directions Soot can enter the outer rectifying layer, which increases the air intake.

In a specific example of the present invention, as shown in FIG. 2 , the inner filter layer 20 is planar, and the inner filter layer is a single-layer filter mesh, and the plurality of filter mesh holes on the inner filter layer 20 200 is in the shape of a hexagon.

In the above embodiment, the inner filter layer is planar, and the plurality of filter meshes are hexagonal in shape, which can simplify the structure while ensuring the air intake area, and the flat single-layer inner filter layer is easy to clean, effectively solving the problem of traditional The structure of the filter screen caused by the double U network structure in the technology is complicated and difficult to clean.

In one embodiment of the present invention, as shown in FIG. 2 , ribs 102 are provided on the upper and lower sides of the outer rectifying layer 10, and first grooves 201 are correspondingly arranged on the upper and lower sides of the inner filter layer 20. , the rib 102 is inserted into the first groove 201 , and the inner filter layer 20 is supported on the rib 102 .

In the above embodiment, the upper and lower sides of the outer rectifying layer are provided with ribs, and the upper and lower sides of the inner filter layer are correspondingly provided with first grooves, and the ribs can be inserted into the first grooves, so that the inner filter layer can Supported on the ribs, the inner filter layer is limited between the ribs on the outer rectifying layer, so as to realize the firm assembly of the outer rectifying layer and the inner filter layer, and the structure is simple, which is convenient for disassembly and installation of the inner filter layer .

Further, the outer rectifying layer 10 is detachably fixed on the installation part through the elastic buckle 30. In the example shown in FIG. 2, FIG. 5 and FIG. 6, the outer rectifying layer 10 is detachable through the elastic buckle 30 Fixed on the deflector 40 of the range hood.

Specifically, as shown in FIGS. 3 and 4 , the elastic buckle 30 includes: a support base 300 , a push pin 301 , a spring 302 and a cover 303 .

Wherein, the support base 300 is fixedly connected with the deflector 40, and the support base 300 is provided with a stepped through hole 3000;

The ejector pin 301 is inserted into the stepped through hole 3000, and one end of the ejector pin 301 abuts against the stepped surface of the stepped through hole 3000, and the other end extends out of the stepped through hole 3000, and the outer The rectifying layer 10 is provided with a second groove 1020, and the other end of the ejector pin 301 extends into the second groove 1020;

One end of the spring 302 leans against one end of the ejector pin 301;

The cover 303 is fixed on the supporting base 300 and covers the stepped through hole 3000 , and the other end of the spring 302 leans against the cover 303 .

In the above-mentioned embodiments, the outer rectifying layer is detachably fixed on the deflector through elastic buckles, which facilitates the smooth installation or removal of the outer rectifying layer on the deflector, thereby facilitating the disassembly and assembly of the inner filter layer. Cleaning; specifically, the elastic buckle includes a support seat, a jack pin, a spring and a cover body, and a stepped through hole is provided on the support seat, and a second groove is provided on the rib of the outer rectifying layer, so that one end of the jack pin leaning against the step surface of the step through hole, the other end extends out of the step through hole, and extends into the second groove, so as to realize the firm assembly of the support seat and the outer rectifying layer, and the support seat is fixedly connected with the deflector, and then The outer rectifying layer is firmly assembled to the deflector through the elastic buckle; by setting a spring between the top pin and the cover, one end of the spring is against one end of the top pin, and the other end is against the cover. Therefore, the firm assembly of the outer rectifying layer and the deflector is realized through the elastic force of the spring, and the ejector pin can compress the spring to retract, and then separate from the second groove, which facilitates the smooth installation of the outer rectifying layer on the deflector or from the Remove the deflector.

Further, as shown in FIG. 2 , the rib 102 protrudes toward the inner side of the outer rectifying layer 10 , and the second groove 1020 is set on the rib 102 .

In the above-mentioned embodiment, by protruding the ribs to the inner side of the outer rectifying layer, and the second groove is set on the ribs, since the upper and lower ends of the outer rectifying layer are provided with ribs, the upper and lower ribs are matched with each other. The top pin supports the outer rectification layer, which realizes the fixing of the outer rectification layer and the deflector; the convex rib protrudes to the inner side of the outer rectification layer, on the one hand, it is convenient to support the inner filter layer, and on the other hand, the outer rectification layer Beautiful appearance.

In a specific example of the present invention, as shown in FIG. 2 and FIG. 3 , a bracket 50 is provided on the deflector 40 , and the bracket 50 is fixedly connected with the support base 300 .

Specifically, as shown in FIG. 3 , the bracket 50 is provided with a bracket screw hole 501, and correspondingly, the support base 300 is provided with a support base screw hole 3002, and the bracket 50 and the support base 300 are fixed by screws; the deflector 40 It can also be fixedly connected with the bracket 50 by screws.

Further, as shown in FIG. 3 and FIG. 4 , the bracket 50 is provided with a buckle 500 , the support base 300 is provided with a third groove 3001 , and the buckle 500 is limited in the third groove within 3001.

In the above-mentioned embodiment, a bracket is provided on the deflector, a buckle is provided on the bracket, and a third groove is provided on the support seat. Through the cooperation of the buckle and the third groove, the bracket and the support seat are connected positioning, and then the bracket can be fixedly connected to the support base through the screw deflector, so that the outer rectifying layer can be firmly installed on the deflector through the setting of the bracket and the support base.

In the above embodiment, the outer rectifying layer is assembled to the deflector through the elastic buckle and the bracket. When the deflector is disassembled, it is only necessary to disconnect the top pin of the elastic buckle from the second groove of the outer rectifying layer. The outer rectifying layer and the inner filter layer fixedly connected with the outer rectifying layer are removed from the deflector, which makes the removal and installation of the filter easy; because the inner filter layer is supported on the ribs of the outer rectifying layer, the inner filter can be easily The layer is removed from the outer rectifying layer, allowing easy removal of the inner filter layer for easy cleaning.

Another embodiment of the present invention provides a range hood (not shown in the figure), including the filter 1 described in any of the above embodiments, the filter 1 is fixed on the range hood The deflector plate has all the beneficial effects of the filter screen described in the above embodiments.

In summary, the filter screen provided by the present invention can effectively separate, rectify and guide the airflow passing through the outer rectifying layer by providing a plurality of parallel rectifying plates on the outer rectifying layer, and reduce turbulence and turbulence in the airflow. Turbulent flow, forming a smooth airflow, effectively avoiding turbulent flow and turbulent flow when the airflow enters the body, as well as noise caused by collisions between turbulent flow and turbulent flow and the inner wall of the body; There are multiple filter mesh holes on the filter layer, and the plurality of filter mesh holes are in a hexagonal shape, which can simplify the structure while ensuring the air intake area, and facilitate the cleaning of the inner filter layer; through the elastic buckle and bracket, the external rectification is realized The detachable connection between the layer and the installation parts makes the disassembly and installation of the filter screen easy. Through the ribs and the first groove, the detachable connection between the inner filter layer and the outer rectifying layer is realized, and it is convenient to remove the inner filter layer. And clean it.

In the description of the present invention, the term "plurality" refers to two or more; unless otherwise specified or explained, the terms "installation", "connection", "fixation" and so on should be understood in a broad sense, for example, " "Connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", "lower", "left", "right" etc. is based on the orientation shown in the drawings Or positional relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or unit must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as a limitation of the present invention.

In the description of this specification, descriptions of the terms "one embodiment", "some embodiments", "specific embodiments" and the like mean that specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in the present invention In at least one embodiment or example of . In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. a screen pack, is characterized in that, comprising:

Outer rectification layer, it offers the first via hole, is provided with multiple cowling panel be arranged in parallel in described first via hole; With

Inner filtration layer, be positioned at the inner side of described outer rectification layer, and described inner filtration layer is provided with multiple filter mesh.

2. screen pack according to claim 1, is characterized in that,

Along direction from outside to inside, the gap that the gap described in adjacent two between cowling panel first reduces described in rear increase or adjacent two between cowling panel reduces gradually.

3. screen pack according to claim 2, is characterized in that,

Described cowling panel left and right sides are arcwall face, and along direction from outside to inside, the gap described in adjacent two between cowling panel first reduces rear increase.

4. screen pack according to claim 1, is characterized in that,

The windward side of described cowling panel is cambered outwards arcwall face.

5. screen pack according to claim 1, is characterized in that,

Described outer rectification layer is cambered outwards arc-shaped.

6. screen pack according to claim 1, is characterized in that,

Described inner filtration layer is plane, and multiple described filter mesh is hexagonal configuration.

7. screen pack according to any one of claim 1 to 6, is characterized in that,

The both sides up and down of described outer rectification layer are equipped with convex tendon, and the both sides up and down of described inner filtration layer are correspondingly provided with the first groove, and described convex tendon inserts in described first groove, and described inner filtration layer is supported on described convex tendon.

8. screen pack according to claim 7, is characterized in that,

Described outer rectification layer is removably fixed on installing component by Elastic buckle.

9. screen pack according to claim 8, is characterized in that, described Elastic buckle comprises:

Supporting seat, is fixedly connected with described installing component, and described supporting seat is provided with a step through-hole;

Ejector pin, described ejector pin inserts in described step through-hole, and one end of described ejector pin is resisted against on the step surface of described step through-hole, and the other end stretches out described step through-hole, described outer rectification layer is provided with the second groove, and the other end of described ejector pin stretches in described second groove;

Spring; One end of described spring is resisted against one end of described ejector pin; With

Lid, described lid is fixed on described supporting seat, and covers described step through-hole, and the other end of described spring is resisted against on described lid.

10. a range hood, is characterized in that, includes screen pack as claimed in any one of claims 1-9 wherein, and described screen pack is fixed on the deflector of described range hood.