CN114060876A - Smoke exhaust ventilator - Google Patents
Smoke exhaust ventilator Download PDFInfo
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- CN114060876A CN114060876A CN202010760176.2A CN202010760176A CN114060876A CN 114060876 A CN114060876 A CN 114060876A CN 202010760176 A CN202010760176 A CN 202010760176A CN 114060876 A CN114060876 A CN 114060876A
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- filter screen
- rotary
- screen
- range hood
- fixed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2035—Arrangement or mounting of filters
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
The invention provides a range hood, comprising: the cigarette machine body is provided with an air inlet; the fan is arranged in the smoke machine body; the fixed filter screen is arranged at the air inlet; the rotary filter screen subassembly sets up in the windward side of fixed filter screen, and the rotary filter screen subassembly can be rotatory for fixed filter screen, and the rotary filter screen subassembly includes: the rotary filter screen comprises at least two rotary filter screens, wherein each rotary filter screen is provided with a plurality of protruding parts which are distributed at intervals, and any two adjacent rotary filter screens are mutually meshed through the protruding parts. According to the range hood provided by the invention, the oil smoke can fully collide with the rotary filter screen assembly and then collide with the fixed filter screen, so that the oil smoke filtering effect of the range hood is improved, and the pollution of the oil smoke to the fan in the range hood body is reduced. Moreover, the rotary filter screen assembly can shield the fixed filter screen in a wider range, so that a large amount of oil smoke can be effectively prevented from avoiding the rotary filter screen at the front end and directly flowing to the fixed filter screen, and the fixed filter screen is prevented from being blocked by the oil smoke.
Description
Technical Field
The invention relates to the technical field of kitchen equipment, in particular to a range hood.
Background
At present, in order to improve the oil fume filtering capacity of the range hood, a single-layer filter screen or a double-layer filter screen is mostly fixed at an air inlet, so that the oil fume continuously collides and condenses with meshes of the filter screen when flowing through the filter screen, and the oil fume is filtered. However, the single-layer filter screen has small meshes, and the meshes are blocked after long-term use, so frequent cleaning is needed, the collision between the oil smoke and the filter screen is insufficient, and the oil smoke filtering effect is poor. And the multi-purpose crisscross grid stack each other of double-deck filter screen, in order to reduce the windage, one section distance of interval between the double-deck filter screen, nevertheless make the collision between filter screen and the oil smoke not enough like this, the filter oil smoke effect is relatively poor.
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.
Therefore, the invention aims to provide the range hood.
In view of the above, an embodiment of an 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; the fixed filter screen is arranged at the air inlet; the rotary filter screen subassembly sets up in the windward side of fixed filter screen, and the rotary filter screen subassembly can be rotatory for fixed filter screen, and the rotary filter screen subassembly includes: the rotary filter screen comprises at least two rotary filter screens, wherein each rotary filter screen is provided with a plurality of protruding parts which are distributed at intervals, and any two adjacent rotary filter screens are mutually meshed through the protruding parts.
The range hood that this embodiment provided, including cigarette machine body, fan, fixed filter screen and rotary filter screen subassembly. The fan sets up inside the cigarette machine body for absorb the oil smoke. The air intake department through at the cigarette machine body sets up fixed filter screen, and set up the rotary filter screen subassembly in the windward side of fixed filter screen, also the rotary filter screen subassembly sets up the one side of keeping away from the fan at fixed filter screen, the rotary filter screen subassembly shelters from at least part of fixed filter screen, make the oil smoke can flow through fixed filter screen behind the rotary filter screen subassembly, and make the rotary filter screen subassembly can be rotatory for fixed filter screen, compare with setting up fixed double-deck filter screen in the correlation technique, be favorable to the oil smoke to fully collide with the rotary filter screen subassembly, then collide with fixed filter screen again, make the oil smoke before getting into the air intake, can fully filter through rotary filter screen subassembly and fixed filter screen, the oil smoke filtering effect of range hood is improved, reduce the pollution of oil smoke to the inside fan of cigarette machine body.
Specifically, through making rotary filter screen subassembly include two at least rotary filter screens, can shelter from fixed filter screen more extensively, can effectively avoid a large amount of oil smoke to avoid being located the rotary filter screen of front end and directly flow to fixed filter screen, ensure range hood's oil smoke filtering effect, avoid fixed filter screen to be blockked up by the oil smoke. Especially, under the condition that the shape of the fixed filter screen is not matched with that of the rotary filter screen, if the fixed filter screen is mostly rectangular or oval, and the rotary filter screen does circular motion, a single rotary filter screen is not easy to shield the fixed filter screen in a large range. And the quantity through making rotary filter screen be at least two, can shelter from fixed filter screen by wider scope to avoid a large amount of oil smoke directly to pass fixed filter screen.
In addition, each rotary filter screen is provided with a plurality of protruding parts which are distributed at intervals, and any two adjacent rotary filter screens are meshed with each other through the protruding parts, so that synchronous rotation of at least two rotary filter screens is facilitated, the phenomenon that the oil fume filtering effect of the range hood is influenced by the fact that the two adjacent rotary filter screens rotate at different rotating speeds to interfere airflow is avoided, and the phenomena that the whole range hood shakes and the noise is increased due to the fact that the two adjacent rotary filter screens rotate at different rotating speeds are also avoided. Moreover, one of the rotary filter screens can be driven to rotate, and the other rotary filter screens can be driven to rotate, so that the whole rotary filter screen assembly is easier to rotate, and the oil smoke can collide with the rotary filter screen assembly conveniently.
In addition, the range hood provided by the technical scheme of the invention also has the following additional technical characteristics:
in one possible design, the rotary screen assembly is capable of rotating relative to the stationary screen under the influence of a fan-induced airflow.
In this design, it is specifically defined that the rotary screen assembly rotates relative to the stationary screen under the action of the airflow driven by the fan, i.e. the rotary screen assembly is passively rotated. On one hand, a driving device for driving the rotary filter screen assembly to rotate is omitted, the structure is simplified, and the cost is reduced; on the other hand, the rotary filter screen component can rotate under the driving of the airflow, so that the wind resistance can be reduced while the filtering effect is ensured, and the oil smoke filtering effect of the range hood is improved. And the rotary filter screen component is arranged on the windward side of the fixed filter screen, and the wind speed of the air inlet front end of the air inlet is high, so that the rotary filter screen component can still rotate quickly when the range hood operates at a low gear, and the maximum rotating speed can be quickly reached.
Specifically, because two arbitrary adjacent rotary filter pass through the bulge intermeshing, even initial time quantum, the air current probably drives different rotary filter and rotates with the speed small amplitude of difference, even with the direction small amplitude rotation of difference, but when two bulge intermeshing back, the rotary filter that starts soon or the rotational speed is fast can drive all the other rotary filter rotatory, finally can realize two adjacent rotary filter with the same speed, opposite direction is rotatory, realizes two at least rotary filter's synchronous rotation.
In one possible design, each rotary screen includes: a first filter screen; and the second filter screen is continuously distributed along the edge of the first filter screen and surrounds the first filter screen to form an installation cavity.
In this design, specifically make every rotary filter screen include first filter screen and second filter screen, make the second filter screen along the marginal continuous distribution of first filter screen in order to enclose with first filter screen and form the installation cavity, also every rotary filter screen has the first filter screen that constructs into roof or diapire promptly, and construct the second filter screen of lateral wall, be favorable to the oil smoke homoenergetic of a plurality of directions to collide with rotary filter screen, for example with the oil smoke of the direction flow of the fixed filter screen of perpendicular to, or for the oil smoke of the oblique flow of fixed filter screen, even for the oil smoke of the fixed filter screen horizontal flow, homoenergetic collides with rotary filter screen's first filter screen or second filter screen, ensure the effect of filtering the oil smoke.
In one possible embodiment, a portion of the second screen projects outward in the form of a projection.
In the design, a part of the second filter screen is specially limited to be protruded outwards to form a convex part, so that the convex part is not additionally arranged on the second filter screen, and the connection strength of the convex part and the second filter screen is ensured. Moreover, the second filter screens are continuously distributed along the edge of the first filter screen, so that the two adjacent second filter screens are favorably meshed with each other through the convex parts.
In one possible design, each of the protrusions is formed of two opposite side surfaces in a rotation direction of the rotary filter screen, one side surface is a mesh surface having mesh holes, and the other side surface is a wind guide surface.
In this design, one of the two opposite side surfaces of each protruding portion in the rotation direction of the rotary filter screen is a mesh surface with meshes, and the other is an air guide surface without meshes, so that the airflow can impact the mesh surface and the air guide surface to generate different thrust after flowing to the rotary filter screen, and the rotary filter screen can be ensured to rotate under the action of the airflow.
Further, in any two projections engaged with each other, the wind guide surface of one projection is in contact with the mesh surface of the other projection.
Because any two adjacent rotary filter screens can rotate in opposite directions, the air guide surface of one bulge is in contact with the mesh surface of the other bulge in any two meshed bulges, and even if the two rotary filter screens rotate at different speeds and/or directions in the initial time period, after the two bulges are meshed with each other and the mesh surfaces are in contact with the air guide surface, the two adjacent rotary filter screens can be ensured to rotate at the same rotating speed and in opposite directions.
In one possible design, each rotary screen further comprises: the supporting frame is arranged in the mounting cavity and is connected with the second filter screen; the first end of pivot is connected with fixed filter screen rotation, and the second end of pivot passes the support frame to be connected with first filter screen.
In this design, it is specifically defined that each rotary screen further comprises a support frame disposed in the mounting cavity and connected to an inner side surface of the second screen, and a rotary shaft connecting the support frame and the fixed screen. The first end through making the pivot is connected with fixed filter screen rotation, makes the second end of pivot pass the support frame and is connected with first filter screen, has realized the stable connection of first filter screen and second filter screen.
In one possible embodiment, the support frame has a plurality of spaced-apart projecting brackets, each supporting a projection.
In the design, the support frame is specifically limited to be provided with a plurality of protruding frames which are distributed at intervals, and the supporting effect of the support frame is improved by enabling each protruding frame to support one protruding part.
In one possible design, the range hood further comprises: the fixed seat is arranged on the fixed filter screen; the connecting seat is connected with the fixed seat; the bearing is arranged on the connecting seat; the first end of the rotating shaft is connected with the connecting seat through a bearing.
In this design, through set up the fixing base on fixed filter screen, make the first end of pivot be connected with the connecting seat through the bearing, make the connecting seat be connected with the fixing base again, realized the indirect connection of pivot and fixed filter screen. Wherein, the existence of fixing base and connecting seat makes things convenient for the assembly of pivot on the one hand, and on the other hand is favorable to fixed filter screen stable support pivot.
In one possible design, at least two rotary screens are of the same or different size.
In the design, the sizes of at least two rotary filter screens are limited to be identical, so that the production and the processing are convenient, and the replacement is convenient. It is also defined that the dimensions of at least two rotary screens may also be different, including the dimensions of each rotary screen being different, and the dimensions of some rotary screens being different. The rotary filter screens with different sizes can be adopted to better shield and fix the filter screens.
In one possible design, at least two rotary screens do not overlap in a direction perpendicular to the stationary screen.
In this design, through making two at least rotary filter screen not overlap in the direction of the fixed filter screen of perpendicular to, the tiling is in the windward side of fixed filter screen, is favorable to sheltering from fixed filter screen more extensively, ensures range hood's effect of filtering the oil smoke.
In one possible design, at least two rotary screens are distributed in a single row in the width direction of the fixed screen; or at least two rotary filter screens are distributed in a plurality of rows in the width direction of the fixed filter screen; or one rotary filter screen in the at least two rotary filter screens corresponds to the middle part of the fixed filter screen, and the rest rotary filter screens are distributed around the rotary filter screen corresponding to the middle part of the fixed filter screen.
In this design, the arrangement of at least two rotary screens is specifically defined. At least two rotary filter screens can be distributed in a single row in the width direction of the fixed filter screen; or at least two rotary filter screens are distributed in a plurality of rows such as two rows, three rows and the like in the width direction of the fixed filter screen; the remaining rotary screens may also be distributed around one rotary screen. Can adopt multiple mode of arranging, can combine the size of every rotary filter screen and the size of fixed filter screen to select suitable mode of arranging, realize that rotary filter screen subassembly shelters from fixed filter screen on a large scale. For example, when the inner diameter or the outer diameter of each rotary screen is equal to or greater than the width of the fixed screen, the rotary screen assembly can shield the fixed screen in a large range by distributing at least two rotary screens in a single row in the width direction of the fixed screen. And under the condition that the inner diameter or the outer diameter of each rotary filter screen is smaller than the width of the fixed filter screen, the plurality of rotary filter screens can be distributed in double rows in the width direction of the fixed filter screen so as to make up the condition that the size of one rotary filter screen is not as large as the width of the fixed filter screen. And under the condition that the outer diameter or the inner diameter of a rotary filter screen with a larger size is equal to the width of the fixed filter screen, the rotary filter screens with other smaller sizes are distributed around the rotary filter screen with the larger size, so that the shielding of the middle area of the rotary filter screen is realized, the shielding of the corner area of the fixed filter screen is also realized, and the shielding of the fixed filter screen in a larger range is realized. Of course, the arrangement of the rotary filter screens is not limited to the above examples.
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 a schematic structural diagram of a range hood according to an embodiment of the present invention;
figure 2 shows a partially broken away schematic view of a range hood according to an embodiment of the invention;
fig. 3 is a partial structural schematic diagram of a range hood according to an embodiment of the invention;
figure 4 shows another partially broken away schematic view of a range hood according to an embodiment of the invention;
figure 5 shows a further partially broken away schematic view of a range hood according to an embodiment of the invention;
fig. 6 is another partial structural schematic diagram of a range hood according to an embodiment of the invention;
fig. 7 is a schematic structural diagram of a rotary filter screen of a range hood according to an embodiment of the invention;
figure 8 shows a schematic cross-sectional view of a rotary screen of a range hood according to one embodiment of the present invention;
fig. 9 is a schematic structural diagram of two rotary filter screens of a range hood according to an embodiment of the present invention;
fig. 10 is a partial structural schematic view of two rotary filter screens of a range hood according to an embodiment of the invention;
fig. 11 is a partial structural schematic view of a range hood according to an embodiment of the present invention;
fig. 12 is a partial structural schematic view of a range hood according to another embodiment of the invention;
fig. 13 is a partial structural schematic diagram of a range hood according to still another embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 13 is:
110 cigarette machine body, 111 air intakes, 112 collection petticoat pipe, 113 guide plate, 120 fixed filter screen, 130 rotatory filter screen, 131 first filter screen, 132 second filter screen, 133 bulge, 1331 mesh face, 1332 wind-guiding face, 134 installation cavity, 135 support frames, 1351 bulge frame, 1352 supporting platform, 136 pivot, 137 lock mother, 140 fixing bases, 150 connecting seats, 160 bearings, 170 first condensation plate, 171 support.
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.
A range hood according to some embodiments of the present invention will be described with reference to fig. 1 to 13.
The first embodiment is as follows:
as shown in fig. 1, 2 and 3, a range hood comprises a range hood body 110, a fan, a fixed filter screen 120 and a rotary filter screen assembly. The cigarette machine body 110 is provided with an air inlet 111, the fan is arranged in the cigarette machine body 110, the fixed filter screen 120 is arranged at the air inlet 111, and the rotary filter screen assembly is arranged on the windward side of the fixed filter screen 120. The spin screen assembly is capable of rotating relative to the stationary screen 120 and includes at least two spin screens 130, each spin screen 130 having a plurality of protrusions 133 spaced apart from one another, and any two adjacent spin screens 130 are engaged with one another by the protrusions 133.
The range hood provided by the embodiment comprises a range hood body 110, a fan, a fixed filter screen 120 and a rotary filter screen assembly. The fan is arranged inside the cigarette machine body 110 and used for sucking oil smoke. The fixed filter screen 120 is arranged at the air inlet 111 of the range hood body 110, the rotary filter screen assembly is arranged on the windward side of the fixed filter screen 120, namely the rotary filter screen assembly is arranged on one side, far away from the fan, of the fixed filter screen 120, the rotary filter screen assembly shields at least one part of the fixed filter screen 120, oil smoke can flow through the fixed filter screen 120 after passing through the rotary filter screen assembly, the rotary filter screen assembly can rotate relative to the fixed filter screen 120, compared with a double-layer filter screen fixed in the related art, the full collision of the oil smoke and the rotary filter screen assembly is facilitated, then the collision of the oil smoke and the fixed filter screen 120 is realized, the oil smoke can fully filter through the rotary filter screen assembly and the fixed filter screen 120 before entering the air inlet 111, the oil smoke filtering effect of the range hood is improved, and the pollution of the oil smoke to the fan inside the range hood body 110 is reduced.
Specifically, through making the rotary filter screen subassembly include two at least rotary filter screens 130, can shelter from fixed filter screen 120 more extensively, can effectively avoid a large amount of oil smoke to avoid being located the rotary filter screen 130 of front end and directly flow to fixed filter screen 120, ensure range hood's filtration oil smoke effect, avoid fixed filter screen 120 to be blockked up by the oil smoke. Especially, in the case that the shape of the fixed screen 120 is not matched with that of the rotary screen 130, for example, the fixed screen 120 is mostly rectangular or oval, and the rotary screen 130 performs a circular motion, so that the single rotary screen 130 is not easy to cover the fixed screen 120 in a wide range. And the number of the rotary filter screens 130 is at least two, so that the fixed filter screens 120 can be shielded in a larger range, and a large amount of oil smoke is prevented from directly passing through the fixed filter screens 120.
In addition, each rotary filter screen 130 is provided with a plurality of protruding portions 133 distributed at intervals, and any two adjacent rotary filter screens 130 are meshed with each other through the protruding portions 133, so that synchronous rotation of at least two rotary filter screens 130 is facilitated, the phenomenon that the oil fume filtering effect of the range hood is influenced by the fact that the two adjacent rotary filter screens 130 rotate at different rotating speeds to interfere with airflow is avoided, and the phenomena that the whole range hood shakes and the noise is increased due to the fact that the two adjacent rotary filter screens 130 rotate at different rotating speeds are also avoided. Moreover, one of the rotary filter screens 130 can be driven to rotate, and the other rotary filter screens 130 can be driven to rotate, so that the whole rotation of the rotary filter screen assembly is easier, and the oil smoke can collide with the rotary filter screen assembly conveniently.
Further, as shown in fig. 4, the side surface of each spin screen 130 has a plurality of protrusions 133 spaced apart, and the plurality of protrusions 133 are evenly distributed circumferentially around the center line of rotation of the spin screen 130.
In one particular embodiment, the rotary screen assembly is capable of rotating relative to the stationary screen 120 under the influence of a fan-induced airflow.
In this embodiment, the rotary screen assembly is specifically defined to rotate relative to the stationary screen 120 under the influence of the airflow generated by the fan, i.e., the rotary screen assembly is passively rotated. On one hand, a driving device for driving the rotary filter screen assembly to rotate is omitted, the structure is simplified, and the cost is reduced; on the other hand, the rotary filter screen component can rotate under the driving of the airflow, so that the wind resistance can be reduced while the filtering effect is ensured, and the oil smoke filtering effect of the range hood is improved. Moreover, the rotary filter screen assembly is arranged on the windward side of the fixed filter screen 120, and the wind speed of the front end of the inlet wind of the air inlet 111 is high, so that the rotary filter screen assembly can still rotate fast when the range hood operates at a low gear, and the maximum rotating speed can be reached quickly.
Specifically, since any two adjacent rotary screens 130 are engaged with each other through the protruding portions 133, even in an initial period of time, the airflow may drive different rotary screens 130 to rotate at different speeds and in different directions, but after the two protruding portions 133 are engaged with each other, the rotary screens 130 that are started quickly or rotate at a high speed may drive the remaining rotary screens 130 to rotate, and finally, the two adjacent rotary screens 130 may rotate at the same speed and in opposite directions, so as to achieve synchronous rotation of at least two rotary screens 130.
Of course, in other embodiments, a motor may be used to rotate the rotary screen assembly. Specifically, the motor drives one rotary screen 130 of the at least two rotary screens 130 to rotate, thereby driving the area rotary screen 130 to rotate.
Example two:
on the basis of the first embodiment, as shown in fig. 4, it is further defined that each rotary screen 130 includes a first screen 131 and a second screen 132. The second screen 132 is continuously distributed along the edge of the first screen 131, and encloses with the first screen 131 to form an installation cavity 134.
In this embodiment, each of the rotating strainers 130 specifically includes a first strainer 131 and a second strainer 132, and the second strainers 132 are continuously distributed along an edge of the first strainer 131 to form an installation cavity 134 with the first strainer 131 in an enclosing manner, that is, each of the rotating strainers 130 has the first strainer 131 configured as a top wall or a bottom wall, and the second strainers 132 configured as side walls, so that lampblack in multiple directions can collide with the rotating strainers 130, such as lampblack flowing in a direction perpendicular to the fixed strainers 120, lampblack flowing obliquely relative to the fixed strainers 120, and even lampblack flowing horizontally relative to the fixed strainers 120, and can collide with the first strainer 131 or the second strainer 132 of the rotating strainers 130, thereby ensuring a lampblack filtering effect.
Specifically, the second screen 132 extends in a direction away from the first screen 131.
Further, the second screen 132 is located on a side of the first screen 131 adjacent to the fixed screen 120. The middle part of first filter screen 131 is sunken to holding the intracavity, is favorable to reducing the windage, is favorable to being driven by the air current moreover and rotates.
Or further, as shown in fig. 4 and 6, the second screen 132 is located on a side of the first screen 131 away from the fixed screen 120.
Example three:
on the basis of the second embodiment, as shown in fig. 7, a portion of the second filter mesh 132 is further defined to be outwardly protruded to form a protrusion 133.
In this embodiment, a portion of the second screen 132 is configured to protrude outward as the protrusion 133, and the protrusion 133 is not additionally provided on the second screen 132, so that the connection strength of the protrusion 133 and the second screen 132 is ensured. Moreover, since the second sieves 132 are continuously distributed along the edge of the first sieve 131, the engagement between the adjacent second sieves 132 by the protrusions 133 is facilitated.
In a specific embodiment, as shown in fig. 7, 9 and 10, each of the protrusions 133 is formed of a mesh surface 1331 having mesh holes and a wind guide surface 1332 on two opposite sides of the rotary screen 130 in the rotation direction.
In this embodiment, one of two opposite side surfaces of each protrusion 133 in the rotation direction of the rotary screen 130 is a mesh surface 1331 having meshes, and the other is a wind guide surface 1332 having no meshes, so that after the airflow flows to the rotary screen 130, the airflow collides with the mesh surface 1331 and the wind guide surface 1332 to generate different thrust forces, thereby ensuring that the rotary screen 130 can rotate under the airflow.
Further, as shown in fig. 9 and 10, in any of the two projections 133 engaged with each other, the wind guide surface 1332 of one projection 133 is in contact with the mesh surface 1331 of the other projection 133.
Since any two adjacent rotary screens 130 rotate in opposite directions, by bringing the air guide surface 1332 of one projection 133 into contact with the mesh surface 1331 of the other projection 133 in any two projections 133 that are engaged with each other, even if two rotary screens 130 rotate at different speeds and/or directions in the initial period, after the two projections 133 are engaged with each other and the mesh surface 1331 comes into contact with the air guide surface 1332, it is possible to ensure that the two adjacent rotary screens 130 rotate at the same rotational speed and in opposite directions.
Of course, in other embodiments, a protrusion 133 may be additionally disposed on the second screen 132. Alternatively, a plurality of protrusions 133 may be formed on the first screen 131, and in this case, the protrusions 133 may be protruded beyond the edge of the first screen 131 to be engaged with the protrusions 133 of the other rotary screen 130.
Example four:
on the basis of the second or third embodiment, as shown in fig. 4, 5 and 8, each rotary screen 130 further includes a support frame 135 and a rotating shaft 136. The supporting frame 135 is arranged in the mounting cavity 134 and connected with the second filter screen 132; the first end of the rotating shaft 136 is rotatably connected to the fixed filter screen 120, and the second end of the rotating shaft 136 passes through the supporting frame 135 and is connected to the first filter screen 131.
In this embodiment, each rotary screen 130 is further defined to include a support bracket 135 disposed within the mounting cavity 134 and coupled to an inner side of the second screen 132, and a shaft 136 coupling the support bracket 135 and the stationary screen 120. The first end of the rotating shaft 136 is rotatably connected to the fixed filter screen 120, and the second end of the rotating shaft 136 passes through the supporting frame 135 to be connected to the first filter screen 131, so that the first filter screen 131 and the second filter screen 132 are stably connected.
Further, as shown in fig. 4, the number of the support frames 135 is two, and the two support frames are disposed on two opposite sides of the second filter screen 132, so that the support effect is good. Moreover, the rotating shaft 136 is connected to the two supporting frames 135 at the same time, so that the connection stability of the first filter screen 131, the second filter screen 132 and the rotating shaft 136 is improved.
In one particular embodiment, as shown in FIG. 5, the support bracket 135 has a plurality of spaced apart projecting brackets 1351, each projecting bracket 1351 supporting a single projection 133.
In this embodiment, the supporting frame 135 is specifically defined to have a plurality of protruding frames 1351 distributed at intervals, and the supporting effect of the supporting frame 135 is improved by making each protruding frame 1351 support one protruding portion 133.
Further, as shown in fig. 5, a support platform 1352 is provided at an end of each of the protruding frames 1351, and a support platform 1352 is also provided between two adjacent protruding frames 1351, and is in surface contact with an inner side of the second screen 132 through the support platform 1352.
Further, the outer profile of the support frame 135 matches the inner profile of the second screen 132.
In a specific embodiment, as shown in fig. 4, 5 and 8, the range hood further includes a fixing base 140, a connecting base 150 and a bearing 160. A fixing seat 140 disposed on the fixed filter screen 120; a connecting seat 150 connected with the fixing seat 140; a bearing 160 disposed on the connection seat 150; the first end of the rotation shaft 136 is connected to the connection seat 150 through a bearing 160.
In this embodiment, the fixing base 140 is disposed on the fixed filter screen 120, so that the first end of the rotating shaft 136 is connected to the connecting base 150 through the bearing 160, and then the connecting base 150 is connected to the fixing base 140, thereby achieving the indirect connection between the rotating shaft 136 and the fixed filter screen 120. Wherein, the existence of fixing base 140 and connecting seat 150 facilitates the assembly of pivot 136 on the one hand, and on the other hand is favorable to fixed filter screen 120 to stably support pivot 136.
Example five:
on the basis of any of the above embodiments, as shown in fig. 11, 12 and 13, it is further defined that at least two rotary screens 130 are the same or different in size.
In this embodiment, it is specifically defined that at least two rotary screens 130 may be identical in size, facilitating manufacturing and replacement. It is further defined that at least two spin screens 130 may also be different sizes, including different sizes for each spin screen 130 and different sizes for portions of the spin screens 130. It is advantageous to use different sizes of rotary screens 130 to better obscure the stationary screen 120.
Furthermore, at least two rotary filter screens 130 are not overlapped in the direction perpendicular to the fixed filter screen 120 and are tiled on the windward side of the fixed filter screen 120, so that the range hood can shield the fixed filter screen 120 in a wider range, and the oil smoke filtering effect of the range hood is ensured.
In a specific embodiment, at least two rotary screens 130 are distributed in a single row in the width direction of the stationary screen 120.
In another specific embodiment, as shown in fig. 11 and 13, at least two rotary screens 130 are distributed in a plurality of rows in the width direction of the stationary screen 120. For example, four or six rotary screens 130 are arranged in a double row in the width direction of the stationary screen 120.
In another embodiment, as shown in fig. 12, one of the at least two rotary screens 130 corresponds to a middle portion of the fixed screen 120, and the remaining rotary screens 130 are distributed around the rotary screen 130 corresponding to the middle portion of the fixed screen 120. For example, one rotary screen 130 corresponds to the middle of the fixed screen 120, and four rotary screens 130 are distributed around the rotary screen 130 corresponding to the middle of the fixed screen 120.
Example six:
on the basis of any of the above embodiments, as shown in fig. 2, it is further defined that the range hood further includes a first condensation plate 170, the first condensation plate 170 is disposed on a side of the rotary filter screen assembly departing from the fixed filter screen 120 assembly, and the first condensation plate 170 can shield the rotary filter screen assembly. In the process of cooking food, the oil smoke rises and contacts the first condensation plate 170 first, and the oil smoke is more easily intercepted by the rotary filter screen assembly and the fixed filter screen 120 after being condensed by the first condensation plate 170, so that the oil smoke filtering effect of the range hood is improved.
Further, as shown in fig. 2, the range hood further includes at least one bracket 171, and the first condensation plate 170 is connected to the hood body 110 through the at least one bracket 171.
Further, the range hood further includes a second condensation plate (not shown in the figure), the second condensation plate is distributed on at least one side of the first condensation plate 170, and the second condensation plate can be close to or far away from the first condensation plate 170, so that the oil smoke enters the range hood body 110 through a gap between the first condensation plate 170 and the second condensation plate.
Further, as shown in figure 1, the cigarette maker body 110 further comprises a smoke collecting hood 112 disposed on one side of the cigarette maker body 110.
Further, as shown in figure 1, the cigarette maker body 110 further comprises a guide plate 113 which is arranged on the inner side wall of the smoke collecting hood 112 and is obliquely arranged relative to the fixed filter screen 120.
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.
Example seven:
a range hood according to an embodiment of the present invention is described in detail below. As shown in fig. 2 to 10, the range hood includes a hood body 110, a blower, a fixed screen 120 and a rotary screen assembly. The cigarette making machine body 110 is provided with an air inlet 111, the fan is arranged in the cigarette making machine body 110, and the fixed filter screen 120 is rectangular and is arranged at the air inlet 111. The rotary screen assembly is disposed on the windward side of the stationary screen 120. The rotary screen assembly is capable of rotating relative to the fixed screen 120 under the influence of the fan-induced airflow. The rotary filter screen assembly comprises two rotary filter screens 130, the two rotary filter screens 130 are distributed in the length direction of the fixed filter screen 120 in a left-right mode, when the two rotary filter screens 130 are started, the two rotary filter screens 130 are driven by air flow driven by a fan, and the protruding portions 133 on the peripheral side surfaces of the rotary filter screens 130 can be pushed mutually, so that the rotary filter screens 130 can rotate more easily.
The second screen 132 (i.e., the side screen) surface of each rotary screen 130 is evenly distributed with protrusions 133. The supporting frames 135 are distributed and installed inside the second filter 132, and are connected to the inner side of the second filter 132. The first filter screen 131 (i.e., the bottom screen) is used for covering the bottom of the second filter screen 132 and supporting the second filter screen 132, the second end of the rotating shaft 136 penetrates through the supporting frame 135 and is fixed at the bottom of the rotary filter screen 130 through the locking nut 137, i.e., fixed on the first filter screen 131, the first end of the rotating shaft 136 is installed on the bearing 160 in the connecting seat 150, and the rotary filter screen 130 is fixed on the fixing seat 140 on the fixed filter screen 120 through the connecting seat 150.
Two rotary screens 130 are fixed under the stationary screen 120, and the two rotary screens 130 are engaged with each other by the protrusions 133 in a staggered mating manner. If the fan in the whole range hood is located at the rear side of the range hood, the air flow in front of the air inlet 111 is larger, most of the oil smoke flows through the front end of the air inlet 111 and enters the range hood, and the rotary filter screen 130 is pushed when the oil smoke flows through the front end of the air inlet 111. Since the rotation directions of the two rotary screens 130 are opposite to each other, the installation directions of the mesh surfaces 1331 and the air guide surfaces 1332 of the rotary screens 130, which are in contact with each other, are also opposite to each other, and finally the rotation direction of the rotary screens 130 is changed.
The mutually contacted rotary filter screens 130 are continuously matched in a staggered way, the rotating speeds are synchronous, and the phenomena that the whole machine shakes and the like due to the fact that the rotating speeds of the two rotary filter screens 130 are asynchronous can be effectively prevented. In addition, when the air intake amounts of the two rotary filters 130 are not uniform, it is easy to cause that the two rotary filters 130 cannot be started simultaneously, in this embodiment, the two rotary filters 130 are in contact with each other, and the one that is started quickly can drive the one that is started slowly, so as to finally realize synchronous rotation.
In addition, in other embodiments, the number of the rotary screen 130 may be one. In order to allow the rotary screen 130 to cover the fixed screen 120 more widely. The rotary screen 130 may be made to shield at least a portion of the widthwise edge of the fixed screen 120. Thereby preventing a large amount of oil smoke from avoiding the front end of the rotatable rotary filter screen 130 and directly colliding with the fixed filter screen 120, which causes the fixed filter screen 120 to be easily blocked and affects the oil smoke filtering effect. Wherein the direction indicated by the double arrow in fig. 11 represents the width direction of the fixed screen 120.
In a particular application, the length of the rotary screen 130 beyond the stationary screen 120 may be at least 10% of the width of the stationary screen 120. The oil fume filtering effect is good.
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 (10)
1. 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;
the fixed filter screen is arranged at the air inlet;
a rotary screen assembly disposed on the windward side of the stationary screen, the rotary screen assembly being rotatable relative to the stationary screen, the rotary screen assembly comprising:
the rotary filter screen comprises at least two rotary filter screens, wherein each rotary filter screen is provided with a plurality of protruding parts distributed at intervals, and any two adjacent rotary filter screens are mutually meshed through the protruding parts.
2. The range hood of claim 1,
the rotary filter screen component can rotate relative to the fixed filter screen under the action of air flow driven by the fan.
3. The range hood of claim 1 or 2,
each rotary screen includes:
a first filter screen;
and the second filter screen is continuously distributed along the edge of the first filter screen and surrounds the first filter screen to form an installation cavity.
4. The range hood of claim 3,
a portion of the second screen projects outwardly to form the projection.
5. The range hood of claim 4,
each protruding part is arranged on two opposite side surfaces in the rotating direction of the rotary filter screen, one side surface is a mesh surface with meshes, and the other side surface is an air guide surface;
in any of the two projections engaged with each other, the wind guide surface of one projection is in contact with the mesh surface of the other projection.
6. The range hood of claim 3,
each rotary screen further comprises:
the supporting frame is arranged in the mounting cavity and is connected with the second filter screen;
the first end of pivot with fixed filter screen rotates and connects, the second end of pivot passes the support frame, and with first filter screen is connected.
7. The range hood of claim 6,
the support frame is provided with a plurality of protruding frames distributed at intervals, and each protruding frame supports one protruding part.
8. The range hood of claim 6,
the range hood further comprises:
the fixed seat is arranged on the fixed filter screen;
the connecting seat is connected with the fixed seat;
the bearing is arranged on the connecting seat;
the first end of the rotating shaft is connected with the connecting seat through the bearing.
9. The range hood of claim 1 or 2,
the at least two rotary screens are the same or different in size; and/or
The at least two rotary screens do not overlap in a direction perpendicular to the stationary screen.
10. The range hood of claim 9,
the at least two rotary filter screens are distributed in a single row in the width direction of the fixed filter screen; or
The at least two rotary filter screens are distributed in a plurality of rows in the width direction of the fixed filter screen; or
Among at least two rotary filter screen, one rotary filter screen with the middle part of fixed filter screen corresponds, all the other rotary filter screen distribute with fixed filter screen middle part corresponds rotary filter screen's all around.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010760176.2A CN114060876B (en) | 2020-07-31 | 2020-07-31 | Fume exhaust fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010760176.2A CN114060876B (en) | 2020-07-31 | 2020-07-31 | Fume exhaust fan |
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| CN114060876A true CN114060876A (en) | 2022-02-18 |
| CN114060876B CN114060876B (en) | 2023-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010760176.2A Active CN114060876B (en) | 2020-07-31 | 2020-07-31 | Fume exhaust fan |
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| CN111351092A (en) * | 2020-04-28 | 2020-06-30 | 佛山市顺德区美的洗涤电器制造有限公司 | Smoke exhaust ventilator |
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| CN109780598A (en) * | 2017-11-10 | 2019-05-21 | 宁波方太厨具有限公司 | A kind of range hood |
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| CN114060876B (en) | 2023-07-18 |
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