CN114060880A

CN114060880A - Rotary filter screen and range hood

Info

Publication number: CN114060880A
Application number: CN202010790982.4A
Authority: CN
Inventors: 谭柏豪; 杨一川; 马世涛; 孙培原; 蒋济武
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2022-02-18

Abstract

The invention provides a rotary filter screen and a range hood. Wherein, rotary screen includes: a first filter screen; the second filter screens are continuously distributed along the edge of the first filter screen and extend in the direction far away from the first filter screen; wherein, first filter screen and second filter screen lock are connected. Through making the second filter screen along the marginal continuous distribution of first filter screen to the direction that keeps away from first filter screen extends, makes rotary filter screen have and constructs the first filter screen of roof or diapire, and constructs the second filter screen of lateral wall, is favorable to the oil smoke homoenergetic of a plurality of directions to collide with rotary filter screen. If the oil smoke flowing in the direction perpendicular to the first filter screen can collide with the first filter screen, the oil smoke flowing obliquely relative to the first filter screen, even the oil smoke flowing horizontally relative to the first filter screen, can collide with the second filter screen. The second filter screen of the first filter screen increases the area of the rotary filter screen for filtering the oil smoke, and is beneficial to improving the oil smoke filtering effect of the rotary filter screen.

Description

Rotary filter screen and range hood

Technical Field

The invention relates to the technical field of kitchen equipment, in particular to a rotary filter screen and a range hood.

Background

Most of filter screens of range hoods in the related art are welded into an integrated structure. But the filter screen is easy to rust at the welding position, and the filter screen is easy to deform due to uneven heating in the welding process.

Disclosure of Invention

The present invention is directed to improving at least one of the technical problems of the prior art or the related art.

To this end, a first aspect of the present invention is to provide a rotary screen.

A second aspect of the present invention provides a range hood.

In view of the above, an embodiment of the first aspect of the present invention provides a rotary filter screen for a range hood, the rotary filter screen comprising: a first filter screen; the second filter screens are continuously distributed along the edge of the first filter screen and extend in the direction far away from the first filter screen; wherein, first filter screen and second filter screen lock are connected.

The rotary filter screen provided by the embodiment of the invention comprises a first filter screen and a second filter screen. Through making the second filter screen along the marginal continuous distribution of first filter screen to the direction that keeps away from first filter screen extends, makes rotary filter screen have and constructs the first filter screen of roof or diapire, and constructs the second filter screen of lateral wall, is favorable to the oil smoke homoenergetic of a plurality of directions to collide with rotary filter screen. If the oil smoke flowing in the direction perpendicular to the first filter screen can collide with the first filter screen, the oil smoke flowing obliquely relative to the first filter screen, even the oil smoke flowing horizontally relative to the first filter screen, can collide with the second filter screen. The second filter screen of the first filter screen increases the area of the rotary filter screen for filtering the oil smoke, and is beneficial to improving the oil smoke filtering effect of the rotary filter screen. Moreover, the first filter screen and the second filter screen are buckled and connected, so that compared with the structure that the filter screens are welded into a whole in the related technology, on one hand, the connection mode is simple, the operation is easy, the processing is convenient, special equipment such as welding equipment is not needed, the investment of a die is small, and the production cost is low; on the other hand, the production of welding seams is avoided, the filter screen is prevented from rusting at a welding position, the filter screen is prevented from being deformed due to uneven heating in the welding process, and the yield is high.

Specifically, the rotary filter screen can rotate, and the air flow that drives the rotary filter screen to flow or the air flow that the rotation of rotary filter screen causes can guide the oil smoke to flow to the rotary filter screen, collide with the rotary filter screen, thereby being favorable to improving the oil smoke filter effect of the range hood applying the rotary filter screen.

In addition, the rotary filter screen provided by the technical scheme of the invention also has the following additional technical characteristics:

in one possible design, the edge of the first filter screen is provided with a first buckling part; the edge of the second filter screen close to the first filter screen is provided with a second buckling part which is buckled with the first buckling part.

In the design, the edge of the first filter screen is specifically limited to be provided with a first buckling part, and the edge of the second filter screen close to the first filter screen is provided with a second buckling part. The first buckling part is connected with the second buckling part in a buckling mode, and the first filter screen is connected with the first filter screen in a buckling mode. And because first buckling parts and second buckling parts are close, make things convenient for the two quick lock to connect, and do not disturb other structures.

In one possible design, the edge of the first filter screen is provided with a first flanging, the first flanging is bent and rolled to form a first slot, and the first flanging is configured into a first buckling part; the edge of the second filter screen is provided with a second flanging, the second flanging is bent and rolled to form a second slot, and the second flanging is constructed into a second buckling part; the opening directions of the first slot and the second slot are opposite, the end part of the first flanging is inserted into the second slot, and the end part of the second flanging is inserted into the first slot.

In this design, through making the edge of first filter screen have first turn-ups, construct first buckling parts with first turn-ups for first buckling parts and first filter screen integrated into one piece make things convenient for the machine-shaping of first buckling parts, ensure first buckling parts and first filter screen firm in connection moreover. The edge of the second filter screen is provided with the second flanging, and the second flanging is constructed into the second buckling part, so that the second buckling part and the second filter screen are integrally formed, the second buckling part is convenient to machine and form, the second buckling part and the first filter screen are firmly connected, and the first filter screen and the second filter screen are firmly connected.

And, through forming first slot with the first turn-ups curl, form the second slot with the second turn-ups curl to make the opening opposite direction of first slot and second slot, insert the second slot with the tip of first turn-ups, insert first slot with the tip of second turn-ups, be favorable to realizing the lock connection of first buckling parts and second buckling parts, the lock is firm.

In one possible design, the second screen comprises: the second filter screen body is bent and rolled to form a first connecting end and a second connecting end; the first connecting end and the second connecting end are connected through the connecting piece.

In this design, the second screen includes a second screen body and a connector. The first connecting end and the second connecting end are formed by bending and rolling the second filter screen body, so that on one hand, connecting gaps on the second filter screen are reduced, and the strength of the second filter screen is improved; on the other hand, the connecting gap is less, the filtering area of the second filter screen is larger, and the filtering capacity is stronger. In addition, the first connecting end and the second connecting end are connected through the connecting piece, and compared with an integrated structure formed by welding the filter screen in the related technology, on one hand, the connecting mode is simple, the operation is easy, the processing is convenient, special equipment such as welding equipment is not needed, the mold investment is small, and the production cost is low; on the other hand, the production of welding seams is avoided, the filter screen is prevented from rusting at a welding position, the filter screen is prevented from being deformed due to uneven heating in the welding process, and the yield is high.

In one possible design, the connector includes: the first pressing plate is bent to form a third slot and connected with the first connecting end; the second pressing plate is bent to form a fourth slot and is connected with the second connecting end; the opening directions of the third slot and the fourth slot are opposite, one end of the first pressing plate is inserted into the fourth slot, and one end of the second pressing plate is inserted into the third slot.

In this design, the connector includes a first pressure plate and a second pressure plate, wherein the first pressure plate is bent to form a third slot and the second pressure plate is bent to form a fourth slot. The opening directions of the third slot and the fourth slot are opposite, so that one end of the first pressing plate is inserted into the fourth slot, one end of the second pressing plate is inserted into the third slot, and firm connection of the first pressing plate and the second pressing plate is achieved. And because the first pressing plate is connected with the first connecting end, and the second pressing plate is connected with the second connecting end, the first connecting end and the second connecting end are connected together through the connecting piece, the second filter screen is bent and rolled, and the second filter screen maintains a cylindrical structure. The whole connection process is simple and convenient, easy to operate and high in installation efficiency.

In one possible design, the first connection end is inserted into the third slot, and the second connection end is inserted into the fourth slot; the first connecting end is provided with a first mounting platform, and the first mounting platform is attached to the groove wall of the third slot; the second connecting end is provided with a second mounting table, and the second mounting table is attached to the forehead groove wall of the fourth slot.

In the design, the first connecting end is inserted into the third slot, so that the first connecting end is connected with the first pressure plate, the third slot is utilized to the maximum extent, and the connection between the first pressure plate and the first connecting end is further simplified. In addition, the first connecting end is provided with a first mounting table, and the first mounting table is attached to the groove wall of the third slot, so that the contact area of the first connecting end and the third slot is increased, and the connection stability between the first connecting end and the first pressing plate is improved. The second connecting end and the second pressing plate have the technical effects when connected, and are not described again.

In one possible design, the first pressure plate is integrally formed with the first connection end; the second pressing plate and the second connecting end are integrally formed.

In this design, the first pressing plate and the first connecting end are integrally formed, and the second pressing plate and the second connecting end are integrally formed. On the one hand, reduced the processing degree of difficulty, improved the wholeness of product, on the other hand has improved the joint strength between first link and the second link. In addition, the connection process of the first connection end and the second connection end is further simplified, the operation is simpler, and the connection efficiency is further improved.

In one possible design, the connecting piece comprises a third pressing plate, the third pressing plate is bent to form a fifth slot and a sixth slot, and the opening direction of the fifth slot is opposite to that of the sixth slot; the first connecting end is inserted into the fifth slot, and the second connecting end is inserted into the sixth slot.

In this design, the connector includes a third pressure plate. The first connecting end and the second connecting end are respectively inserted into a fifth slot and a sixth slot which are formed by bending the third pressing plate, so that the first connecting end and the second connecting end are connected. The third pressing plate is simple in structure, easy to machine and low in machining precision requirement, and further production cost is reduced. In addition, the whole connecting process has few working procedures and is easy to operate, so that the production efficiency is further improved, and the production cost is reduced.

In one possible design, the first screen is located at one end of the second screen, with the middle of the first screen projecting in a direction away from the second screen.

In this design, through the middle part with first filter screen to the direction protrusion of keeping away from the second filter screen for the area of contact increase of oil smoke and first filter screen, and then improved the filter capacity of first filter screen. And the rotating filter screen is favorable for being passively rotated under the action of the airflow.

In one possible design, the first screen further comprises: the air guide inner ring is arranged on the inner side of the second filter screen and comprises a plurality of first blades which are distributed at intervals along the edge of the first filter screen.

In the design, the first filter screen further comprises an air guide inner ring. Through set up the wind-guiding inner circle in second filter screen inboard, be favorable to leading the oil smoke for first filter screen slope flows, and even the oil smoke of horizontal flow also can flow to the second filter screen, even flows to first filter screen via the second filter screen, realizes that the oil smoke realizes double-deck filtration through first filter screen and second filter screen, improves rotary filter screen's filtration oil smoke ability. Specifically, the air guide inner ring with the plurality of first blades is arranged, so that the air guide capacity of the air guide inner ring can be enhanced, more oil smoke can be guided into the second filter screen for filtering.

In one possible design, the first screen further comprises: the air guide outer ring is arranged on the outer side of the second filter screen and comprises a plurality of second blades which are distributed around the second filter screen at intervals.

In the design, the first filter screen further comprises an air guide outer ring. The oil smoke is guided by the air guide outer ring, so that the oil smoke flows obliquely relative to the first filter screen, even the oil smoke flowing horizontally can flow to the second filter screen, even the oil smoke flows to the first filter screen through the second filter screen, double-layer filtering of the oil smoke through the first filter screen and the second filter screen is realized, and the oil smoke filtering capacity of the rotary filter screen is improved. Specifically, the air guide outer ring with the second blades is arranged, so that the air guide capacity of the air guide outer ring can be enhanced, and more media to be filtered are guided into the second filter screen for filtering.

In one possible design, the first screen further comprises: the filter screen bracket is arranged on the inner side of the second filter screen; and the end cover is connected with the filter screen bracket and the first filter screen.

In this design, the first screen further includes a screen support and an end cap. Through setting up filter screen support, can provide certain holding power to the second filter screen, avoid the second filter screen to take place to warp because of external force at rotatory in-process, influence rotary filter's filter capacity. Connect filter screen support and first filter screen through the end cover, on the one hand, can avoid filter screen support to deviate from the second filter screen is inboard, influence the supporting effect, and on the other hand can fix a position filter screen support, makes the relative position between filter screen support and the second filter screen stable unchangeable, avoids filter screen support to take place the skew, influences the supporting effect to the second filter screen.

An embodiment of a second aspect of the present invention provides a range hood, including: the cigarette machine body is provided with an air inlet; the fan is arranged in the smoke machine body; and as above-mentioned any one of technical scheme's rotary filter screen, rotary filter screen sets up on the air inlet direction of air intake, and rotary filter screen can rotate under the effect of the air current that the fan drove.

The range hood provided by the embodiment of the invention comprises a range hood body, a fan and a rotary filter screen in any design. The rotary filter screen is arranged in the air inlet direction of the air inlet, so that the oil smoke is filtered through the rotary filter screen before entering the interior of the range hood, and the rotary filter screen filters out grease in the oil smoke, thereby avoiding the oil smoke from polluting a fan system. Can rotate under the effect of the air current that the fan drove through setting up rotary filter for rotary filter can carry the grease after the oil smoke of filtration to the oil cup rapidly at rotatory in-process, avoids the grease to block up rotary filter, causes frequently to unpick and wash rotary filter. In addition, the range hood provided by the embodiment of the invention comprises the rotary filter screen in any design, so that the technical effect realized by the rotary filter screen in any design can be realized, and the details are not repeated herein.

In one possible design, the range hood further comprises: the fixed filter screen is arranged at the air inlet; the rotating shaft is connected with the fixed filter screen, and the rotating filter screen is sleeved on the rotating shaft and rotates around the axis of the rotating shaft.

In the design, the range hood also comprises a fixed filter screen and a rotating shaft. Through set up fixed filter screen in air intake department, can carry out the secondary filter to the oil smoke that gets into range hood, improve range hood's filter capacity. Through setting up rotary filter screen and can rotate around the axis of pivot, the air current that the fan drove can make rotary filter screen when the axis of pivot is rotatory, can reduce the resistance when rotary filter screen is rotatory to guarantee that rotary filter screen can the steady rotation.

In one possible design, the range hood further comprises: the first condensation plate is arranged on one side, away from the fixed filter screen, of the rotary filter screen, and the first condensation plate shields the air inlet; and the second condensation plate is arranged on at least one side of the first condensation plate and can be close to or far away from the first condensation plate.

In this design, the range hood further includes a first condensation plate and a second condensation plate. Set up first condensing plate in the one side that rotary filter deviated from fixed filter screen for first condensing plate shelters from the air intake. On the one hand, first condensation plate can effectively block the inside material of range hood and flow out through the air intake, and on the other hand, first condensation plate can condense the oil smoke before the oil smoke gets into rotary filter for the oil smoke can be more easily intercepted by rotary filter and fixed filter screen after the condensation of first condensation plate, improves range hood's filtration oil smoke effect. In addition, through setting up the second condensing plate in at least one side of first condensing plate, can condense the oil smoke that the side flowed to the air intake on the one hand, avoid the oil smoke not just flow into rotary filter screen without condensing, influence rotary filter screen's filter effect, on the other hand can shelter from rotary filter screen, air intake to accept from the inside grease that drips of cigarette machine body, leading-in oil cup, avoid the inside oil smoke of cigarette machine body to drip outside the range hood.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 shows an exploded view of a rotary screen of one embodiment of the present invention;

FIG. 2 shows a schematic structural view of a rotary screen of one embodiment of the present invention;

FIG. 3 shows a partial enlarged view at A in FIG. 2;

FIG. 4 illustrates a first assembly process diagram of a first screen and a second screen of an embodiment of the present invention;

FIG. 5 illustrates a second assembly process diagram of a first screen and a second screen of an embodiment of the present invention;

FIG. 6 illustrates a third assembly process diagram of the first and second screens of one embodiment of the present invention;

FIG. 7 shows a schematic structural view of a rotary screen of yet another embodiment of the present invention;

FIG. 8 shows a partial enlarged view at B in FIG. 7;

FIG. 9 shows a schematic structural view of a rotary screen of yet another embodiment of the present invention;

FIG. 10 shows a partial enlarged view at C in FIG. 9;

FIG. 11 illustrates a first assembly process diagram of the first link end and the second link end of one embodiment of the present invention;

FIG. 12 illustrates a second assembly process diagram of the first link end and the second link end of one embodiment of the present invention;

FIG. 13 shows an exploded view of a rotary screen of yet another embodiment of the present invention;

figure 14 shows an exploded view of a range hood according to one embodiment of the present invention;

fig. 15 is a schematic structural diagram of a range hood according to an embodiment of the present invention;

fig. 16 shows a schematic structural diagram of a range hood according to another embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 16 is:

100 rotary filter screens, 102 first filter screens, 104 second filter screens, 106 first flanging, 108 first slots, 110 second flanging, 112 second slots, 114 second filter screen bodies, 116 connecting pieces, 118 first pressing plates, 120 third slots, 122 second pressing plates, 124 fourth slots, 126 first connecting ends, 128 second connecting ends, 136 air guide inner rings, 138 first blades, 140 air guide outer rings, 142 second blades, 144 filter screen supports, 146 end covers, 200 range hoods, 202 cigarette machine bodies, 206 fixed filter screens, 208 rotating shafts, 210 first condensation plates and 212 second condensation plates.

Detailed Description

So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Rotary screen 100 and range hood 200 of some embodiments of the present invention are described below with reference to fig. 1-16.

The first embodiment is as follows:

referring to fig. 1 and 2, a spin-on-screen 100 for a range hood 200, the spin-on-screen 100 includes a first screen 102 and a second screen 104. Wherein the second screen 104 is continuously distributed along the edge of the first screen 102 and extends away from the first screen 102. The first screen 102 and the second screen 104 are snap fit.

The rotary screen 100 according to an embodiment of the present invention includes a first screen 102 and a second screen 104. By having second screen 104 running continuously along the edge of first screen 102 and extending in a direction away from first screen 102, such that rotary screen 100 has first screen 102 configured as a top or bottom wall, and second screen 104 configured as a side wall, it is beneficial for multiple directions of soot to be able to collide with rotary screen 100. For example, the soot flowing in a direction perpendicular to the first screen 102 can collide with the first screen 102, and the soot flowing obliquely with respect to the first screen 102, even the soot flowing horizontally with respect to the first screen 102, can collide with the second screen 104. The existence of the second filter screen 104 of the first filter screen 102 increases the area of the rotary filter screen 100 for filtering the oil smoke, which is beneficial to improving the oil smoke filtering effect of the rotary filter screen 100. Moreover, by buckling and connecting the first filter screen 102 and the second filter screen 104, compared with the filter screen welded into an integral structure or the filter screen integrally stretched and formed in the related art, on one hand, the connection mode is simple, the operation is easy, the processing is convenient, no special equipment such as welding equipment is needed, the mold investment is small, and the production cost is low; on the other hand, the production of welding seams is avoided, the filter screen is prevented from rusting at a welding position, the filter screen is prevented from being deformed due to uneven heating in the welding process, and the yield is high.

Specifically, the rotary filter screen 100 can rotate, and the air flow driving the rotary filter screen 100 to flow or the air flow induced by the rotation of the rotary filter screen 100 can guide the oil smoke to flow to the rotary filter screen 100 and collide with the rotary filter screen 100, thereby being beneficial to improving the oil smoke filtering effect of the range hood 200 using the rotary filter screen 100.

Example two:

on the basis of the first embodiment, a first buckling part is further arranged on the edge of the first filter screen 102; the edge of the second filter screen 104 close to the first filter screen 102 is provided with a second buckling part, and the second buckling part is buckled with the first buckling part.

In this embodiment, it is specifically defined that the edge of the first screen 102 is provided with a first snap-fit portion, and the edge of the second screen 104 adjacent to the first screen 102 is provided with a second snap-fit portion. The first buckling part and the second buckling part are buckled and connected, so that the buckling and connection of the first filter screen 102 and the first filter screen 102 is realized. And because first buckling parts and second buckling parts are close, make things convenient for the two quick lock to connect, and do not disturb other structures.

As shown in FIG. 3, in one particular embodiment, the edge of the first screen 102 has a first flange 106, the first flange 106 is crimped to form a first slot 108, and the first flange 106 is configured as a first snap fit; the edge of the second filter screen 104 is provided with a second flange 110, the second flange 110 is bent to form a second slot 112, and the second flange 110 is configured as a second buckling part; the opening directions of the first slot 108 and the second slot 112 are opposite, the end of the first flange 106 is inserted into the second slot 112, and the end of the second flange 110 is inserted into the first slot 108.

In this embodiment, the first flange 106 is configured as a first snap-fit portion by providing the first flange 106 at the edge of the first screen 102, so that the first snap-fit portion is integrally formed with the first screen 102, which facilitates the forming of the first snap-fit portion and ensures that the first snap-fit portion and the first screen 102 are firmly connected. Through making the edge of second filter screen 104 have second turn-ups 110, construct second turn-ups 110 into the second buckling parts for second buckling parts and second filter screen 104 integrated into one piece make things convenient for the machine-shaping of second buckling parts, ensure moreover that second buckling parts and first filter screen 102 firm in connection, and then ensure first filter screen 102 and second filter screen 104 firm in connection.

Moreover, the first flanging 106 is bent to form the first slot 108, the second flanging 110 is bent to form the second slot 112, the opening directions of the first slot 108 and the second slot 112 are opposite, the end part of the first flanging 106 is inserted into the second slot 112, and the end part of the second flanging 110 is inserted into the first slot 108, so that the first buckling part and the second buckling part can be buckled and connected, and the buckling is firm.

During a particular assembly process, the first slot 108 may be caused to clamp an end of the second flange 110, such as by compressing the first flange 106 such that the first slot 108 clamps an end of the second flange 110. Similarly, the second slot 112 is made to grip the end of the first flange 106, e.g., by squeezing the second flange 110, so that the second slot 112 grips the end of the second flange 110. A secure attachment of first screen 102 and second screen 104 is achieved.

As shown in fig. 4, 5 and 6, in particular, the first flange 106 and the second flange 110 may be made to be substantially of a figure 7 type, and each of the first flange 106 and the second flange 110 includes a transverse extension and a vertical extension, the transverse extension of the first flange 106 is located on a first side of the transverse extension of the second flange 110, the vertical extension of the first flange 106 extends toward a second side of the second flange 110, and the vertical extension of the second flange 110 is located on a second side of the transverse extension thereof. During assembly, the vertically extending section of the first flange 106 may be bent and rolled first, so that a first slot 108 is formed between the horizontally extending section and the vertically extending section of the first flange 106, and the horizontally extending section of the second flange 110 is surrounded. The transversely extending section of the second flange 110 is then bent and rolled, such that a second slot 112 is formed between the transversely extending section and the vertically extending section of the second flange 110 and surrounds the vertically extending section of the first flange 106. The buckling connection of the two flanges is realized.

For example, when the second filter screen 104 and the first filter screen 102 are fastened to each other, the edge of the first filter screen 102 is provided with two-stage flanges, one end of each of the two-stage flanges extends in a direction away from the second filter screen 104, the other end of each of the two-stage flanges extends in a height direction of the second filter screen 104, the edge of the second filter screen 104 is also provided with two-stage flanges, one of the two-stage flanges extends continuously in the height direction of the second filter screen 104, and the other end of each of the two-stage flanges extends in a bent direction to the outside of the second filter screen 104. During buckling connection, a section of the flanging of the first filter screen 102 extending along the height direction of the second filter screen 104 is pressed obliquely upward, and the flanging is close to the flanging of the second filter screen 104 until the flanging is attached. To further snap-fit the first screen 102 to the second screen 104, thereby preventing the two screens from unthreading. Then, a pressure that is bent and rolled toward the inner side of the second filter screen 104 is applied to the outward extending flange of the second filter screen 104, so that the flange of the second filter screen 104 is tightly attached to the height-direction extending flange of the second filter screen 104. Finally, the two flanges are mutually occluded and buckled with each other, so that the looseness is prevented.

It should be noted that the bending of the present application means the change of the extending direction of the flange, and the bending position may be a cambered surface filter or may have a folded edge.

Example three:

as shown in fig. 7, in addition to any of the above embodiments, second screen 104 is further defined to include a second screen body 114 and a connector 116. The second screen body 114 is crimped to form a first connection end 126 and a second connection end 128. The first connection end 126 and the second connection end 128 are connected by the connection member 116.

In this embodiment, second screen 104 includes a second screen body 114 and a connector 116. The first connecting end 126 and the second connecting end 128 are formed by bending the second filter screen body 114, so that on one hand, connecting gaps on the second filter screen 104 are reduced, and the strength of the second filter screen 104 is improved; on the other hand, the connecting gaps are fewer, the filtering area of the second filter screen 104 is larger, and the filtering capacity is stronger. In addition, the first connecting end 126 and the second connecting end 128 are connected through the connecting piece 116, compared with the structure that the filter screen is welded into a whole in the related art, on one hand, the connecting mode is simple, the operation is easy, the processing is convenient, special equipment such as welding equipment is not needed, the mold investment is small, and the production cost is low; on the other hand, the production of welding seams is avoided, the filter screen is prevented from rusting at a welding position, the filter screen is prevented from being deformed due to uneven heating in the welding process, and the yield is high.

As shown in fig. 8, 9 and 10, in one particular embodiment, the connector 116 includes a first pressure plate 118 and a second pressure plate 122. The first pressing plate 118 is bent to form a third insertion groove 120, and the first pressing plate 118 is connected to the first connection end 126. The second pressing plate 122 is bent to form a fourth insertion groove 124, and the second pressing plate 122 is connected to the second connection end 128. The opening directions of the third slot 120 and the fourth slot 124 are opposite, one end of the first pressing plate 118 is inserted into the fourth slot 124, and one end of the second pressing plate 122 is inserted into the third slot 120.

In this embodiment, the connector 116 includes a first pressure plate 118 and a second pressure plate 122, wherein the first pressure plate 118 is bent to form a third slot 120 and the second pressure plate 122 is bent to form a fourth slot 124. The opening directions of the third slot 120 and the fourth slot 124 are opposite, so that one end of the first pressing plate 118 is inserted into the fourth slot 124, and one end of the second pressing plate 122 is inserted into the third slot 120, which is beneficial to realizing the firm connection of the first pressing plate 118 and the second pressing plate 122. Since the first pressing plate 118 is connected to the first connecting end 126 and the second pressing plate 122 is connected to the second connecting end 128, the first connecting end 126 and the second connecting end 128 are connected together through the connecting member 116, so that the second filter screen 104 is bent and rolled, and the second filter screen 104 maintains a cylindrical structure. The whole connection process is simple and convenient, easy to operate and high in installation efficiency.

As shown in fig. 11 and 12, during a particular assembly process, the third socket 120 may be caused to clamp an end of the second platen 122, e.g., to squeeze the second platen 122, such that the third socket 120 clamps an end of the second platen 122. Similarly, the fourth slot 124 is caused to clamp an end of the first platen 118, such as by pressing against the second platen 122, such that the fourth slot 124 clamps the end of the first platen 118. A secure connection of the first link end 126 and the second link end 128 is achieved.

For example, the two pressing plates may be inserted into each other, that is, the end of the first pressing plate 118 is inserted into the third slot 120, and the end of the second pressing plate 122 is inserted into the fourth slot 124; then, the first connection end 126 is preset in the third slot 120, so that the second connection section is preset in the fourth slot 124; finally, the first pressing plate 118 and the second pressing plate 122 are pressed to firmly connect the first connecting end 126 and the second connecting end 128.

Further, the first connection end 126 is inserted into the third slot 120, and the second connection end 128 is inserted into the fourth slot 124.

Further, the first connecting end 126 has a first mounting platform, and the first mounting platform is attached to the groove wall of the third slot 120; the second connecting end 128 has a second mounting platform, and the second mounting platform is attached to the wall of the forehead slot of the fourth slot 124.

By inserting the first connection end 126 into the third slot 120, the connection between the first connection end 126 and the first pressing plate 118 is realized, the third slot 120 is maximally utilized, and the connection between the first pressing plate 118 and the first connection end 126 is further simplified. In addition, the first connecting end 126 has a first mounting platform, and the first mounting platform is attached to the groove wall of the third slot 120, so that the contact area between the first connecting end 126 and the third slot 120 is increased, and the connection stability between the first connecting end 126 and the first pressing plate 118 is improved. The second connecting end 128 is connected to the second pressing plate 122, so that the above technical effects are also achieved, and the detailed description is omitted.

Further, the second presser plate 122 is integrally formed with the second connecting end 128 by integrally forming the first presser plate 118 with the first connecting end 126. On the one hand, the processing difficulty is reduced, the integrity of the product is improved, and on the other hand, the connection strength between the first connection end 126 and the second connection end 128 is improved. In addition, the connection process of the first connection end 126 and the second connection end 128 is further simplified, the operation is simpler, and the connection efficiency is further improved.

In another specific embodiment, the connecting member 116 includes a third pressing plate, the third pressing plate is bent to form a fifth slot and a sixth slot, and the opening direction of the fifth slot is opposite to the opening direction of the sixth slot; the first connection end 126 is inserted into the fifth slot and the second connection end 128 is inserted into the sixth slot.

In this embodiment, the connector 116 includes a third pressure plate. The connection of the first and

second connection terminals

126 and 128 is accomplished by inserting the first and

second connection terminals

126 and 128 into fifth and sixth insertion grooves, respectively, which are formed by bending the third pressing plate. The third pressing plate is simple in structure, easy to machine and low in machining precision requirement, and further production cost is reduced. In addition, the whole connecting process has few working procedures and is easy to operate, so that the production efficiency is further improved, and the production cost is reduced.

During a particular assembly process, the third pressure plate may be compressed such that the fifth slot clamps the first connection end 126 and the sixth slot clamps the second connection end 128.

Example four:

as shown in fig. 13, on the basis of any of the above embodiments, it is further defined that the first screen 102 further includes an air guiding inner ring 136. The air guide inner ring 136 is arranged inside the second filter screen 104, and the air guide inner ring 136 comprises a plurality of first blades 138, and the plurality of first blades 138 are distributed at intervals along the edge of the first filter screen 102.

In this embodiment, the first screen 102 further includes an air deflection collar 136. Through set up wind-guiding inner ring 136 in second filter screen 104 inboard, be favorable to leading the oil smoke for first filter screen 102 flows obliquely, and even the oil smoke of horizontal flow also can flow to second filter screen 104, flows to first filter screen 102 via second filter screen 104 even, realizes that the oil smoke realizes double-deck filtration through first filter screen 102 and second filter screen 104, improves the filtration oil smoke ability of rotary filter screen 100. Specifically, by providing the air guiding inner ring 136 with a plurality of first blades 138, the air guiding capability of the air guiding inner ring 136 can be enhanced, so that more oil smoke is guided into the second filter screen 104 for filtering.

Specifically, when the oil smoke flows through the second filter screen 104, the air guiding inner ring 136 can guide the oil smoke into the second filter screen 104, so that the oil smoke is filtered by the second filter screen 104 and the first filter screen 102 in sequence. By arranging the air guide inner ring 136 with the plurality of first blades 138, the air guide capability of the air guide inner ring 136 is enhanced, so that the filtering capability of the rotary filter screen 100 is improved, and the smoke containing grease is prevented from flowing into the range hood 200.

Further, the first screen 102 further includes an air guide outer ring 140. The air guide outer ring 140 is disposed outside the second filter screen 104, and the air guide outer ring 140 includes a plurality of second blades 142, and the plurality of second blades 142 are distributed around the second filter screen 104 at intervals. The oil smoke is guided by the air guide outer ring 140, so that the oil smoke flows obliquely relative to the first filter screen 102, even the oil smoke flowing horizontally can also flow to the second filter screen 104, and even flows to the first filter screen 102 through the second filter screen 104, so that the oil smoke is filtered in a double-layer mode through the first filter screen 102 and the second filter screen 104, and the oil smoke filtering capacity of the rotary filter screen 100 is improved. Specifically, by providing the air guide outer ring 140 with a plurality of second blades 142, the air guide capacity of the air guide outer ring 140 can be enhanced, so that more media to be filtered are guided into the second filter screen 104 for filtering.

Specifically, when the oil smoke flows through the second filter screen 104, the air guide outer ring 140 can guide the oil smoke into the second filter screen 104, so that the oil smoke is filtered by the second filter screen 104 and the second filter screen 104 in sequence. The air guide outer ring 140 is formed by the plurality of second blades 142, so that the air guide capacity of the air guide outer ring 140 is enhanced, the filtering capacity of the rotary filter screen 100 is further improved, and the smoke containing grease is prevented from flowing into the range hood 200.

In a specific application, the second filter screen 104 may be provided with an inner wind guiding ring 136 and an outer wind guiding ring 140 at the same time, so as to improve the wind guiding capability. In addition, only the inner wind guide ring 136 or the outer wind guide ring 140 may be provided on the second screen 104, as the case may be, to reduce the production cost.

Example five:

in any of the above embodiments, it is further defined that the first screen 102 is located at one end of the second screen 104, and a middle portion of the first screen 102 protrudes away from the second screen 104. The contact area between the oil smoke and the first filter screen 102 is increased, and the filtering capacity of the first filter screen 102 is improved. Moreover, passive rotation of rotary screen 100 by the airflow is facilitated.

Specifically, by disposing the first screen 102 at one end of the second screen 104, the first screen 102 and the second screen 104 may be enclosed into a cavity, thereby increasing the filtering area of the rotary screen 100. In addition, by projecting the middle of the first screen 102 away from the second screen 104, the volume of the cavity can be increased, and more oil smoke can be accommodated. In addition, after the middle of the first filter screen 102 protrudes towards the direction away from the second filter screen 104, the filtering surface of the first filter screen 102 is inclined, so that the contact area between the oil smoke and the first filter screen 102 is increased, and the filtering capacity of the first filter screen 102 is further improved.

Further, first screen 102 also includes a screen support 144 and an end cap 146. Screen support 144 is disposed inside second screen 104; an end cap 146 connects the screen support 144 and the first screen 102.

Through setting up filter screen support 144, can provide certain holding power to second filter screen 104, avoid second filter screen 104 to take place to warp because of external force in rotatory process, influence rotary filter 100's filter capacity. Connect filter screen support 144 and first filter screen 102 through end cover 146, on the one hand, can avoid filter screen support 144 to deviate from second filter screen 104 is inboard, influences the supporting effect, and on the other hand can fix a position filter screen support 144, makes the relative position between filter screen support 144 and the second filter screen 104 stable unchangeable, avoids filter screen support 144 to take place the skew, influences the supporting effect to second filter screen 104.

Example six:

as shown in fig. 14, 15 and 16, a range hood 200 includes: a cigarette maker body 202, a blower, and a rotary filter screen 100 as in any of the embodiments described above. The cigarette machine body 202 is provided with an air inlet; the fan is arranged in the cigarette machine body 202; rotary filter screen 100 sets up on the air inlet direction of air intake, and rotary filter screen 100 can rotate under the effect of the air current that the fan drove.

The range hood 200 provided by the embodiment of the invention comprises a range hood body 202, a fan and the rotary filter screen 100 in any one of the embodiments. The rotary filter screen 100 is arranged in the air inlet direction of the air inlet, so that the oil smoke is filtered by the rotary filter screen 100 before entering the interior of the range hood 200, and the rotary filter screen 100 filters out the grease in the oil smoke, thereby preventing the oil smoke from polluting a fan system. Can rotate under the effect of the air current that the fan drove through setting up rotary filter 100 for rotary filter 100 can carry the grease after the oil smoke of filtration to the oil cup rapidly at rotatory in-process, avoids grease to block up rotary filter 100, causes frequently to unpick and wash rotary filter 100. In addition, the range hood 200 provided in the embodiment of the present invention includes the rotary filter screen 100 in any of the embodiments, so that the technical effects achieved by the rotary filter screen 100 in any of the embodiments can be achieved, and the details are not repeated herein.

Moreover, by specifically limiting the ability of rotary screen 100 to rotate under the influence of airflow generated by a fan, rotary screen 100 is also passively rotated. On one hand, a driving device for driving the rotary filter screen 100 to rotate is omitted, the structure is simplified, and the cost is reduced; on the other hand, the rotary filter screen 100 can be driven by the airflow to rotate, so that the wind resistance can be reduced while the filtering effect is ensured, and the oil smoke filtering effect of the range hood 200 is improved. Moreover, the rotary filter screen 100 is disposed on the windward side of the fixed filter screen 206, and the wind speed at the front end of the inlet wind of the air inlet is fast, so that the rotary filter screen 100 can still rotate fast when the range hood 200 operates at a low gear, and the maximum rotating speed can be reached quickly.

In one embodiment, the range hood 200 further includes a stationary screen 206 and a rotating shaft 208. The fixed filter screen 206 is arranged at the air inlet; the rotating shaft 208 is connected to the fixed filter screen 206, and the rotating filter screen 100 is sleeved on the rotating shaft 208 and rotates around the axis of the rotating shaft 208.

In this embodiment, the range hood 200 further includes a stationary screen 206 and a rotating shaft 208. Through set up fixed filter screen 206 in air intake department, can carry out the secondary filter to the oil smoke that gets into range hood 200, improve range hood 200's filter capacity. Through setting up rotary filter screen 100 and can rotate around the axis of pivot 208, the air current that the fan drove can make rotary filter screen 100 when rotatory around the axis of pivot 208, can reduce the resistance when rotary filter screen 100 rotates to guarantee that rotary filter screen 100 can the steady rotation.

Specifically, set up fixed filter screen 206 in air intake department, when the oil smoke flows through fixed filter screen 206, can collide the condensation with the mesh on the fixed filter screen 206, filter the grease in the oil smoke. After the oil smoke is secondarily filtered by the rotary filter screen 100 and the fixed filter screen 206, the oil smoke residue in the oil smoke can be further reduced, and the filtering capacity of the range hood 200 is further improved.

In particular applications, the first screen 102 may be located at an end of the second screen 104 near the fixed screen 206, or at an end of the second screen 104 away from the fixed screen 206.

Further, the range hood 200 further includes an air guiding ring, and the air guiding ring is connected with the fixed filter screen 206. The wind-guiding circle is established on rotary filter screen 100, on the one hand, can protect rotary filter screen 100, prolongs rotary filter screen 100's life, and on the other hand, when rotary filter screen 100 revolves the axis of rotation 208 and rotates, can carry out spacingly to rotary filter screen 100, avoids rotary filter screen 100 to take place the skew when rotatory.

In one embodiment, the range hood 200 further includes a first condensation plate 210. The first condensation plate 210 is disposed on a side of the rotary filter screen 100 facing away from the fixed filter screen 206, and the first condensation plate 210 blocks the air inlet.

Further, the range hood 200 further includes a second condensation plate 212. The second condensation plate 212 is disposed at least one side of the first condensation plate 210, and the second condensation plate 212 can be close to or distant from the first condensation plate 210.

In this embodiment, first condensation plate 210 is disposed on a side of rotary screen 100 facing away from stationary screen 206 such that first condensation plate 210 blocks the intake vent. On the one hand, first condensation plate 210 can effectively block the inside material of range hood 200 and flow out through the air intake, and on the other hand, first condensation plate 210 can condense the oil smoke before the oil smoke gets into rotary filter screen 100 for the oil smoke can be intercepted by rotary filter screen 100 and fixed filter screen 206 more easily after the condensation of first condensation plate 210, improves range hood 200's filtration oil smoke effect. In addition, the second condensation plate 212 is arranged on at least one side of the first condensation plate 210, so that on one hand, oil smoke flowing to the air inlet from the side surface can be condensed, the oil smoke is prevented from flowing into the rotary filter screen 100 without being condensed, the filtering effect of the rotary filter screen 100 is prevented from being influenced, on the other hand, the rotary filter screen 100 and the air inlet can be shielded in a wider range, grease dropping from the inside of the range hood body 202 is received and guided into the oil cup, and the oil smoke dropping from the inside of the range hood body 202 is prevented from dropping to the outside of the range hood 200.

Specifically, the first condensation plate 210 shields the air inlet, and can effectively block oil and water dropping from the inside of the range hood 200. In addition, after the first condensation plate 210 blocks the air inlet, in the cooking process, the oil smoke firstly contacts the first condensation plate 210 in the rising process, and after the oil smoke is condensed by the condensation plate, the oil smoke is more easily intercepted by the rotary filter screen 100. In addition, the area of the first condensation plate 210 can be larger than that of the air inlet, and in the smoking process, because the area of the condensation plate is larger than that of the air inlet, the negative pressure area at the bottom of the range hood 200 is expanded, the smoking capability around the range hood 200 can be enhanced, and the oil smoke is prevented from overflowing.

Further, the range hood 200 further includes a smoke collection hood disposed at one end of the range hood body 202, and a flow guide plate disposed at an inner side arm of the smoke collection hood and inclined with respect to the fixed filter screen 206.

In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary filter screen for a range hood, the rotary filter screen comprising:

a first filter screen;

the second filter screens are continuously distributed along the edge of the first filter screen and extend in the direction far away from the first filter screen;

wherein, first filter screen with the second filter screen lock is connected.

2. The rotary screen of claim 1,

a first buckling part is arranged at the edge of the first filter screen;

the second filter screen is close to the edge of first filter screen is provided with the second buckling parts, the second buckling parts with first buckling parts lock is connected.

3. The rotary screen of claim 2,

the edge of the first filter screen is provided with a first flanging, the first flanging is bent and rolled to form a first slot, and the first flanging is constructed into a first buckling part;

the edge of the second filter screen is provided with a second flanging, the second flanging is bent and rolled to form a second slot, and the second flanging is constructed into a second buckling part;

the opening directions of the first slot and the second slot are opposite, the end part of the first flanging is inserted into the second slot, and the end part of the second flanging is inserted into the first slot.

4. The rotary screen of any one of claims 1 to 3,

the second screen includes:

the second filter screen body is bent and rolled to form a first connecting end and a second connecting end;

and the first connecting end and the second connecting end are connected through a connecting piece.

5. The rotary screen of claim 4,

the connector includes:

the first pressing plate is bent to form a third slot, and the first pressing plate is connected with the first connecting end;

the second pressing plate is bent to form a fourth slot and connected with the second connecting end;

the opening directions of the third slot and the fourth slot are opposite, one end of the first pressing plate is inserted into the fourth slot, and one end of the second pressing plate is inserted into the third slot.

6. The rotary screen of claim 5,

the first connecting end is inserted into the third slot, and the second connecting end is inserted into the fourth slot;

the first connecting end is provided with a first mounting platform, and the first mounting platform is attached to the groove wall of the third slot;

the second connecting end is provided with a second mounting platform, and the second mounting platform is attached to the forehead groove wall of the fourth slot.

7. The rotary screen of claim 5,

the first pressing plate and the first connecting end are integrally formed;

the second pressing plate and the second connecting end are integrally formed.

8. The rotary screen of claim 4,

the connecting piece comprises a third pressing plate, the third pressing plate is bent to form a fifth slot and a sixth slot, and the opening direction of the fifth slot is opposite to that of the sixth slot;

the first connecting end is inserted into the fifth slot, and the second connecting end is inserted into the sixth slot.

9. The rotary screen of any one of claims 1 to 3,

first filter screen is located the one end of second filter screen, the middle part of first filter screen is to keeping away from the direction protrusion of second filter screen.

10. The rotary screen of any one of claims 1 to 3,

the first screen further comprises:

the air guide inner ring is arranged on the inner side of the second filter screen and comprises a plurality of first blades which are distributed at intervals along the edge of the first filter screen; and/or

The air guide outer ring is arranged on the outer side of the second filter screen and comprises a plurality of second blades, and the second blades are distributed at intervals on the second filter screen.

11. The rotary screen of any one of claims 1 to 3,

the first screen further comprises:

the filter screen bracket is arranged on the inner side of the second filter screen;

an end cap connecting the screen support and the first screen.

12. A range hood, comprising:

the range hood comprises a range hood body, a smoke outlet and a smoke inlet, wherein the range hood body is provided with an air inlet;

the fan is arranged in the cigarette machine body; and

the rotary filter screen according to any one of claims 1 to 11, wherein the rotary filter screen is disposed in an air intake direction of the air inlet, and the rotary filter screen is capable of rotating under an air flow generated by the fan.

13. The range hood of claim 12, further comprising:

the fixed filter screen is arranged at the air inlet;

the pivot is connected fixed filter screen, rotatory filter screen cover is established in the pivot, and centers on the axis of pivot is rotatory.

14. The range hood of claim 13, further comprising:

the first condensation plate is arranged on one side, away from the fixed filter screen, of the rotary filter screen, and the first condensation plate shields the air inlet;

and the second condensation plate is arranged on at least one side of the first condensation plate and can be close to or far away from the first condensation plate.