CN111351092B

CN111351092B - Smoke exhaust ventilator

Info

Publication number: CN111351092B
Application number: CN202010352262.XA
Authority: CN
Inventors: 谭柏豪; 马世涛; 何新奎; 王春旭; 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: 2020-04-28
Filing date: 2020-04-28
Publication date: 2022-02-18
Anticipated expiration: 2040-04-28
Also published as: CN111351092A

Abstract

The invention belongs to the field of household appliances, and discloses a range hood, wherein the range hood (100) comprises: the smoke collecting hood (1) is provided with an air inlet (1 a); a condensing plate (13) detachably mounted on an upstream side of the air inlet (1a) along a soot path; rotatory filter mechanism, set up air intake (1a) with between condensing plate (13), rotatory filter mechanism include along pivot axle (3) that the up-and-down direction in oil smoke route extends and cup joint in pivot axle (3) are in order can be under the air current drive pivoted rotary screen (4), rotary screen (4) can be followed the downstream of oil smoke route is followed to the upstream direction in pivot axle (3) are pulled out. According to the oil fume separation device, the rotary filter screen can pivot under the driving of the air flow to intercept a large amount of oil fume outside the air inlet, and the rotary filter screen is convenient to disassemble, so that the oil fume separation effect is effectively improved, and the time and cost required by cleaning and maintenance are reduced.

Description

Smoke exhaust ventilator

Technical Field

The invention relates to the technical field of household appliances, in particular to a range hood.

Background

In order to improve the oil smoke filtering capability of the filter screen of the air inlet, the existing range hood can be realized by prolonging the contact time between oil smoke and the filter screen or increasing the contact area between the oil smoke and the filter screen, for example, the existing range hood can adopt measures of overlapping multiple layers of filter screens or reducing the meshes of the filter screens to increase the surface area of the filter screens.

However, reducing the mesh size only improves the oil smoke separation effect for a short time, and after a long time of use, the mesh size is easily clogged, so that the filter screen needs to be frequently disassembled and washed, resulting in an increase in maintenance time and cost. In addition, although the contact time between the oil smoke and the filter screens can be prolonged by adopting a multi-layer filter screen overlapping structure, a small amount of oil smoke can still enter the interior of the range hood without being filtered due to the fact that meshes of each layer of filter screen are large.

Disclosure of Invention

Aiming at the defects or shortcomings of the prior art, the invention provides the range hood which can intercept a large amount of oil smoke outside the air inlet and is easy to disassemble and clean, so that the user experience is effectively improved.

In order to achieve the above object, the present invention provides a range hood, comprising:

the smoke collecting hood is provided with an air inlet;

a condensing plate detachably installed at an upstream side of the air inlet along a soot path;

the rotary filtering mechanism is arranged between the air inlet and the condensing plate and comprises a pivot shaft extending along the upstream direction and the downstream direction of the oil smoke path and a rotary filter screen sleeved on the pivot shaft and capable of pivoting under the driving of air flow, and the rotary filter screen can be detached from the pivot shaft along the downstream direction and the upstream direction of the oil smoke path.

Optionally, the rotary filter mechanism further includes an air guide frame fixedly sleeved outside the rotary filter screen, and an upstream end bracket detachably mounted at an upstream end of the air guide frame along the soot path, and a fixed connection is formed between an upstream end of the pivot shaft and the upstream end bracket along an upstream and downstream direction of the soot path.

Optionally, a rotary snap connection is formed between the upstream end bracket and the air guide frame.

Optionally, the rotary filter mechanism further includes an upstream bearing sleeve seat fixedly connected to the upstream end bracket and an upstream bearing fixedly sleeved in the upstream bearing sleeve seat, and the upstream bearing is detachably sleeved outside the upstream end portion of the pivot shaft.

Optionally, the rotary filter mechanism further comprises a fastener sleeved between the pivot shaft and the upstream bearing, and the fastener is used for limiting the rotary filter screen to move towards the upstream of the oil smoke path.

Optionally, the range hood further includes a flow guide member fixedly disposed on a downstream end surface of the condensation plate for preventing cross air flow from rushing towards each other.

Optionally, the range hood further includes an air inlet filter screen fixedly disposed outside the air inlet, a downstream end portion of the air guide frame is fixedly connected to the air inlet filter screen, and a downstream end portion of the pivot shaft is fixedly connected to the air inlet filter screen in an upstream-downstream direction along the oil smoke path.

Optionally, the rotary filter mechanism further comprises a downstream bearing sleeve seat fixedly connected to the air inlet filter screen and a downstream bearing fixedly sleeved in the downstream bearing sleeve seat, an annular limiting portion extending in the transverse direction is formed at the downstream end of the pivot shaft, and a bearing inner ring of the downstream bearing abuts against the upstream end of the annular limiting portion.

Optionally, rotary filter screen includes can be under the horizontal air drive the cylindrical filter screen portion of pivot and can be under the vertical air drive the conical cylinder shape filter screen portion of pivot, conical cylinder shape filter screen portion with fixed connection and coaxial setting about the cylindrical filter screen portion.

Optionally, a smoke collecting cavity inlet is formed between the condensation plate and the lateral side wall of the smoke collecting hood, and the range hood further comprises a cut-off plate located at the smoke collecting cavity inlet and a displacement mechanism for driving the cut-off plate to move;

the range hood can be switched between a common smoking state and a powerful smoking state, the opening plate and the condensation plate are transversely butted in the common smoking state, and the displacement mechanism drives the opening plate to move towards the direction capable of expanding the inlet of the smoke collection cavity in the process of switching to the powerful smoking state.

In the invention, the rotary filter screen can pivot under the driving of the airflow, so that a large amount of oil smoke is intercepted outside the air inlet, the amount of the oil smoke entering the interior of the range hood is reduced, and the oil smoke separation effect is effectively improved. In addition, the rotary filter screen can be detached from the pivot shaft along the downstream direction and the upstream direction of the oil smoke path, so that the rotary filter screen can be taken out for cleaning without disassembling more components, and the time and the cost for cleaning and maintaining can be reduced.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of a range hood according to an embodiment of the present invention, wherein the range hood is in a normal smoking state;

FIG. 2 is another schematic view of the range hood of FIG. 1, shown in a heavy smoking state;

fig. 3 is an exploded view of the range hood of fig. 1;

FIG. 4 is a partial cross-sectional view A-A of the range hood of FIG. 1;

FIG. 5 is a schematic view of an air intake screen and air deflection frame according to an embodiment of the present invention;

fig. 6 is a schematic view of the air guide frame and the upstream end bracket according to the embodiment of the present invention, in which the hook of the upstream end bracket hooks the upstream frame portion of the air guide frame;

fig. 7 is another schematic view of the air guide frame and the upstream end bracket according to the embodiment of the present invention, in which the hook of the upstream end bracket is vertically aligned with the avoiding notch of the upstream frame portion;

FIG. 8 is a schematic view of a rotary screen according to an embodiment of the present invention;

FIG. 9 is a partial schematic view of the rotary screen of FIG. 8.

Description of reference numerals:

100 range hood

1 smoke collecting hood 2 air inlet filter screen

3 pivoting shaft 4 rotary filter screen

5 wind guide frame 6 upstream end support

7 downstream bearing sleeve seat 8 downstream bearing

9 upstream bearing cartridge 10 upstream bearing

11 fastener 12 diversion part

13 condensation plate 14 open-close plate

1a air inlet and 2a filter screen inserting hole

3a annular limiting part and 4a conical cylindrical filter screen part

4c filter screen center support of 4b cylindrical filter screen part

4d guide vane 4e filter screen body

5a downstream frame portion 5b upstream frame portion

5c air guide piece 5d avoiding notch

5e frame insert 6a bracket center

6b support spoke part 6c trip

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In embodiments of the invention, where the context requires otherwise, the use of directional terms such as "upper, lower, top and bottom" is generally intended in the orientation shown in the drawings or the positional relationship of the various components in a vertical, vertical or gravitational orientation.

The invention will be described in detail below with reference to exemplary embodiments and with reference to the accompanying drawings.

As shown in fig. 1 to 9, an exemplary embodiment of the present invention provides a range hood 100.

It should be noted that, for the range hood 100 in the drawings, the oil smoke enters the interior of the range hood from bottom to top (with respect to the orientation in fig. 1) during smoking, so for convenience of description, the orientation will be described based on the placement of the range hood 100 in fig. 1, that is, the upstream of the oil smoke path corresponds to the lower part in the drawings, and the downstream of the oil smoke path corresponds to the upper part in the drawings. Therefore, when describing each component in the range hood, if the description relates to the up-down positional relationship, the description of "up, down, upper end, lower end, upper end portion, lower end portion, up-down direction, etc. is used in common, and the description of" downstream, upstream, downstream end, upstream end, downstream end portion, upstream-downstream direction, downstream-upstream direction ", etc. is not used for the time being.

Specifically, with continued reference to the drawings, the range hood 100 includes a smoke collection hood 1, a condensation plate 13, and a rotary filter mechanism. Wherein, be equipped with in the collection petticoat pipe 1 and collect the smoke chamber and be located the air intake 1a at the top of collection smoke chamber, the oil smoke in the external environment can loop through collection smoke chamber and air intake and get into the cigarette machine inside. The condensation plate 13 is detachably arranged below the air inlet 1a, and when the components in the cigarette machine need to be disassembled, the condensation plate 13 can be disassembled firstly, and then the components above the condensation plate are more conveniently disassembled. The rotary filtering mechanism is arranged between the air inlet 1a and the condensing plate 13 for separating oil smoke, wherein the rotary filtering mechanism comprises a pivot shaft 3 extending along the up-down direction and a rotary filter screen 4 sleeved on the pivot shaft 3, so that the rotary filter screen 4 can pivot under the driving of air flow (such as oil smoke gas flow). For example, the rotary screen 4 may include a screen center bracket 4c, and a center portion of the screen center bracket 4c is provided with a socket hole in which the pivot shaft 3 is internally fitted, thereby fixing the rotary screen 4 and the pivot shaft 3. In addition, when the rotary filter 4 needs to be disassembled for cleaning, the condensation plate 13 is disassembled first, and then the rotary filter 4 can be disassembled from the pivot shaft 3 from top to bottom without disassembling more other components such as the pivot shaft 3.

Therefore, when the range hood 100 sucks smoke, the external oil smoke gas flow does not directly flow into the air inlet 1a after entering the smoke collection cavity, but drives the rotary filter screen 4 to pivot firstly, and when the rotary filter screen 4 pivots, a large amount of oil stains in the oil smoke gas flow can be intercepted, so that the oil stain amount flowing into the interior of the range hood through the air inlet 1a is greatly reduced, the oil stain amount adhered to important components such as a fan can be effectively reduced, the reliability of the components in the range hood is ensured, the service life of the components in the range hood is prolonged, and the cleaning and maintenance frequency can be reduced due to low pollution degree.

In addition, after the range hood 100 works for a long time, the rotary filter 4 is adhered with a large amount of greasy dirt, which causes the rotary filter 4 to have an excessive weight and not to be driven by airflow easily, and the mesh of the filter may be blocked, so that the rotary filter 4 needs to be removed and cleaned in time. And because the rotary filter screen 4 can be detached from the pivot shaft 3 from top to bottom, more other parts in the rotary filter mechanism such as the pivot shaft 3 do not need to be detached, thereby reducing the time and cost for cleaning and maintenance.

In summary, the range hood 100 in the exemplary embodiment of the present invention can improve the oil-smoke separation effect outside the air inlet, and is convenient to disassemble and clean, so as to effectively improve the user experience.

In one embodiment, the rotary filter mechanism further comprises a wind guide frame 5 and an upstream end bracket 6. Specifically, the air guide frame 5 is fixedly arranged and sleeved outside the rotary filter screen 4, the air guide frame 5 is provided with an air guide structure, air flow can be guided to flow through the rotary filter screen 4, the rotary filter screen 4 is ensured to pivot continuously under a large enough air flow driving force, and therefore the reliability of the rotary filter mechanism is improved. In addition, the upstream end bracket 6 is detachably mounted on the bottom of the air guide frame 5, and a fixed connection in the up-down direction is formed between the bottom of the pivot shaft 3 and the upstream end bracket 6, that is, the pivot shaft 3 and the upstream end bracket 6 are fixedly connected in the up-down direction, but the pivot shaft 3 can still perform a pivoting motion. In this configuration, when the rotary screen 4 needs to be removed, the upstream end bracket 6 needs to be removed from the bottom of the air guide frame 5.

In one embodiment, the upstream end bracket 6 forms a rotational snap connection with the air guide frame 5. The rotation buckle connection means that when the upstream end support 6 is assembled to the bottom of the air guide frame 5, the upstream end support 6 can be buckled with each other through the rotation movement of the upstream end support 6, and the upstream end support 6 and the air guide frame 5 are buckled with each other only through the self structure without using other fixing pieces. In other words, when the upstream end bracket 6 needs to be detached from the bottom of the air guide frame 5, the upstream end bracket 6 can be rotated to disengage the two from each other without detaching other fixing members. Therefore, by forming the rotary snap connection, it is advantageous to further improve the efficiency of washing and disassembling the rotary strainer 4.

In one embodiment, the upstream end bracket 6 includes a bracket central portion 6a and a plurality of bracket spoke portions 6b, the plurality of bracket spoke portions 6b respectively protruding in the lateral direction from the outer periphery of the bracket central portion 6a and arranged at intervals in the circumferential direction in order. The number of the bracket spokes 6b need not be so large as to ensure sufficient support strength for supporting the pivot shaft 3 and sufficient connection strength with the air guide frame 5. With a larger ventilation area between adjacent bracket spokes 6b, airflow circulation may be enhanced to maintain pivoting of the rotary screen 4.

Furthermore, the air guiding frame 5 includes a downstream frame portion 5a and an upstream frame portion 5b which are arranged at intervals up and down, and a plurality of air guiding sheets 5c which are connected between the downstream frame portion 5a and the upstream frame portion 5b and are arranged at intervals in the circumferential direction in sequence, and the plurality of air guiding sheets 5c are part of the air guiding structure in the air guiding frame 5, and may be provided in the shape and arrangement shown in fig. 5, so that the air can be guided to the rotary screen 4 when the air passes through, so that the rotary screen 4 can keep pivoting in the same direction.

In order to realize the rotary buckle connection between the upstream end support 6 and the air guide frame 5, a clamping hook 6c can be formed at the transverse outer end of the support spoke part 6b, and a plurality of avoidance gaps 5d can be formed on the upstream frame part 5b, wherein the avoidance gaps 5d are sequentially arranged at intervals along the circumferential direction and are arranged in one-to-one correspondence with the clamping hooks 6 c. After the upstream end bracket 6 and the air guide frame 5 are assembled, referring to fig. 6, the upstream end bracket 6 is hooked to the upstream frame portion 5b by a plurality of hooks 6 c. When the upstream end bracket 6 needs to be detached from the upstream frame portion 5b, referring to fig. 7, the upstream end bracket 6 may be rotated in the circumferential direction until the plurality of hooks 6c and the plurality of escape notches 5d are aligned one by one in the vertical direction, and at this time, the hooks 6c and the upstream frame portion 5b are disconnected, so that the upstream end bracket 6 may be detached from the upstream frame portion 5 b. When the upstream end support 6 and the air guide frame 5 need to be reassembled, the plurality of hooks 6c and the plurality of avoidance notches 5d can be aligned one by one in the vertical direction, and then the upstream end support 6 is rotated in the circumferential direction to enable the plurality of hooks 6c to hook the upstream frame portion 5b again.

Of course, in some other embodiments, the rotary snap-fit connection between the upstream end bracket 6 and the air guide frame 5 has other implementation manners, and the present invention does not limit the specific implementation manners.

In one embodiment, the rotary filter mechanism further comprises an upstream bearing sleeve seat 9 fixedly connected to the upstream end bracket 6 and an upstream bearing 10 fixedly sleeved in the upstream bearing sleeve seat 9, wherein the upstream bearing 10 is detachably sleeved outside the bottom of the pivot shaft 3. For example, the upstream bearing sleeve mount 9 may be fixedly attached to the upstream end bracket 6 by a fixing member such as a nut, and the upstream bearing 10 is tightly fitted into the upstream bearing sleeve mount 9. When the upstream end bracket 6 is removed from the air guide frame 5, the upstream bearing sleeve seat 9 and the upstream bearing 10 are removed together with the upstream end bracket 6, so that the removal process is saved, and the efficiency of removing and washing the rotary filter screen 4 is further improved.

In one embodiment, the rotary filter mechanism further comprises a fastener 11 disposed between the pivot shaft 3 and the upstream bearing 10, wherein the fastener 11 is used for limiting the downward movement of the rotary filter screen 4. For example, referring to fig. 4, the fastening member 11 is sleeved on the bottom end of the pivot shaft 3 and sleeved in the upstream bearing 10, wherein the fastening member 11 and the pivot shaft 3 can be held fixed by a direct fastening sleeve or a threaded connection. At this time, after the upstream end bracket 6 is detached from the air guide frame 5, the downward movement of the rotary screen 4 is not limited by only rapidly detaching the fastening member 11, so that the rotary screen 4 can be detached downward from the pivot shaft 3.

In one embodiment, the range hood 100 further includes a flow guide 12 fixedly disposed on a top surface of the condensation plate 13 for preventing the cross air flow from colliding. For example, referring to fig. 3 and 4, the flow guide 12 may be tapered, and the transverse air flow can be guided to bend upward when passing through the tapered outer surface of the flow guide 12, so as to prevent the phenomenon of multiple transverse air flows colliding with each other from affecting the pivoting of the rotary screen 4. And to make the cigarette machine more compact and to improve the overall structural stability, the deflector 12 may be made to support the bottom of the upstream end bracket 6 to reduce the supporting pressure of the upstream end bracket 6. In addition, because the diversion piece 12 is fixedly connected with the condensing plate 13, when the condensing plate 13 is disassembled, the diversion piece 12 can be disassembled together with the condensing plate 13, so that the disassembling process is saved, and the disassembling and washing efficiency of the rotary filter screen 4 is further improved.

Generally, the range hood 100 further includes an air inlet filter screen 2 fixedly disposed outside the air inlet 1a, in order to make the overall structure of the range hood more compact and simplified, in an embodiment, the top of the air guiding frame 5 may be fixedly connected to the air inlet filter screen 2, and a fixed connection along the up-down direction is formed between the top of the pivot shaft 3 and the air inlet filter screen 2, that is, the pivot shaft 3 and the air inlet filter screen 2 form a fixed connection along the up-down direction, and the pivot shaft 3 can still perform a pivoting motion.

In one embodiment, a frame insertion portion 5e is formed at one lateral side of the top of the air guiding frame 5, and a frame positioning portion is formed at the other lateral side of the top of the air guiding frame, and the air inlet screen 2 is formed with a screen insertion hole 2a corresponding to the frame insertion portion 5e and a screen positioning portion corresponding to the frame positioning portion. When assembling the air guide frame 5 and the air inlet filter screen 2, the frame inserting portion 5e may be inserted into the filter screen inserting hole 2a, and then the frame positioning portion and the filter screen positioning portion may be detachably connected, for example, the frame positioning portion and the filter screen positioning portion may be a screw connection structure or a buckle connection structure, etc. With this structure, the number of fixing members such as screws can be reduced, and the attachment/detachment process of the air guide frame 5 can be simplified.

In one embodiment, the rotary filter mechanism further comprises a downstream bearing sleeve mount 7 fixedly attached to the intake screen 2 and a downstream bearing 8 fixedly nested within the downstream bearing sleeve mount 7. For example, referring to fig. 3 to 5, a vertical through hole may be formed in the air intake screen 2 for the top of the pivot shaft 3 to pass through upward, at this time, the downstream bearing sleeve seat 7 may be fixedly mounted on the top surface of the air intake screen 2 by a fixing member such as a screw, and the top end of the pivot shaft 3 passes through the downstream bearing 8. In order to avoid disassembling the pivot shaft 3, an annular limiting part 3a extending in the transverse direction can be formed at the top of the pivot shaft 3, and at the moment, the bearing inner ring of the downstream bearing 8 is supported at the bottom of the annular limiting part 3a, so that the downward movement of the pivot shaft 3 is limited, and therefore, when the rotary filter screen 4 is disassembled, the pivot shaft 3 is always kept at the original position without being disassembled and assembled.

In one embodiment, referring to fig. 8 and 9, the rotary screen 4 includes a cylindrical screen part 4b capable of pivoting under the driving of a transverse air flow and a conical screen part 4a capable of pivoting under the driving of a vertical air flow, and the conical screen part 4a and the cylindrical screen part 4b are fixedly connected up and down and are coaxially arranged. In other words, the conical-cylindrical screen section 4a and the cylindrical screen section 4b can pivot synchronously regardless of whether a transverse air flow or a vertical air flow passes through the rotary screen 4.

With continued reference to the drawings, the rotary screen 4 may include a screen body 4e provided with a plurality of mesh openings and a plurality of guide vanes 4d fixedly mounted within the screen body 4 e. Wherein, the part of filter screen body 4e in awl cylindric filter screen portion 4a is awl cylindric, and a plurality of guide vane 4d in awl cylindric filter screen portion 4a are along circumference interval arrangement in proper order, and respective top interconnect for a plurality of guide vane 4d are arranged with similar swirl form. Further, the part of the screen body 4e in the cylindrical screen section 4b is cylindrical, and a plurality of guide vanes 4d in the cylindrical screen section 4b are sequentially arranged at intervals in the circumferential direction.

Each guide vane 4d of the conical cylindrical screen part 4a and the cylindrical screen part 4b is provided with a windward driving surface, and each windward driving surface can drive the rotary screen 4 to pivot towards the same direction when being impacted by airflow. As can be seen from the drawings, the conical filter screen part 4a and the cylindrical filter screen part 4b can be driven to pivot synchronously no matter whether the airflow acting on the guide vanes 4d in the conical filter screen part 4a is transverse airflow or vertical airflow. In fact, when the air flow passing through the rotary screen 4 is neither a transverse air flow nor a vertical air flow, it can be regarded as an oblique air flow which can still drive the rotary screen 4 to pivot by impacting the windward driving surface in the conical-cylindrical screen portion 4 a.

It can be seen that, by providing the above-described structure, the pivoting of the rotary screen 4 is not restricted by the direction of the air flow, and the rotary screen 4 can be driven to pivot as long as the air flow having a sufficiently large driving force passes through the rotary screen 4, thereby improving the reliability of the rotary filter mechanism.

Specifically, a smoke collection chamber inlet is formed between the condensation plate 13 and the lateral side wall of the smoke collection cover 1, and the oil smoke in the external environment can flow into the smoke collection chamber through the smoke collection chamber inlet.

In one implementation, the range hood 100 further includes an opening plate 14 located at the inlet of the smoke collection chamber and a displacement mechanism for driving the opening plate 14 to move, for example, the displacement mechanism may include a pivot mechanism for driving the opening plate 14 to pivot. The range hood 100 can be switched between a normal smoking state and a powerful smoking state, the opening plate 14 and the condensation plate 13 are transversely butted in the normal smoking state, and the displacement mechanism drives the opening plate 14 to move towards the direction capable of expanding the inlet of the smoke collection cavity in the process of switching to the powerful smoking state.

Through the arrangement of the structure, when the oil smoke in the external environment is more, the range hood 100 can be switched to a strong smoking state, and at the moment, the opening-closing plate 14 moves towards the direction of enlarging the inlet of the smoke collection cavity, so that the oil smoke entering the inlet of the smoke collection cavity in unit time is increased, and the smoking speed is increased. When the amount of oil smoke in the external environment is small, the smoke collection efficiency can be ensured by keeping the size of the smoke collection cavity inlet normal, so that the range hood 100 can be switched to a common smoke collection state, and at the moment, the opening plate 14 and the condensing plate 13 are in butt joint along the transverse direction to reduce the smoke collection cavity inlet. Therefore, the range hood 100 can adjust the size of the smoke collection cavity inlet according to different oil smoke conditions, thereby effectively improving the smoking efficiency.

Further, the smoke collection chamber inlet may include a first smoke collection chamber inlet and a second smoke collection chamber inlet formed at both lateral sides of the condensation plate 13, respectively, the opening plate 14 may include a first opening plate located at the first smoke collection chamber inlet and a second opening plate located at the second smoke collection chamber inlet, the displacement mechanism may include a first displacement mechanism for driving the first opening plate to move and a second displacement mechanism for driving the second opening plate to move, and the first displacement mechanism and the second displacement mechanism may be configured to operate independently of each other.

Under the condition that the first displacement mechanism and the second displacement mechanism can operate independently, when the oil smoke generated at the two transverse sides of the cooking bench is less, referring to fig. 1, the range hood 100 can efficiently smoke while keeping a common smoking state. When the oil smoke generated at one side of the cooking bench is more and the oil smoke generated at the other side is less, the open-close plate 14 (one of the first open-close plate or the second open-close plate) at one side of the range hood 100 can be opened, and the open-close plate 14 (the other of the first open-close plate or the second open-close plate) at the other side can be kept closed, so that the smoking speed at one side can be effectively increased, and the smoke can be more specifically smoked. When the oil smoke generated at the two transverse sides of the cooking bench is more, referring to fig. 2, the first opening plate and the second opening plate can be opened, so that the smoking speed at the two sides is increased.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.

It should be noted that, in the foregoing embodiments, various features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described in further detail in the embodiments of the present invention.

In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.

Claims

1. A range hood, characterized in that the range hood (100) comprises:

the smoke collecting hood (1) is provided with an air inlet (1 a);

a condensing plate (13) detachably mounted on an upstream side of the air inlet (1a) along a soot path;

rotatory filtering mechanism sets up air intake (1a) with between condensing plate (13), rotatory filtering mechanism includes the edge pivot axle (3) that the last downstream direction in oil smoke route extends and cup joint in pivot axle (3) are with can be under the air current drive pivoted rotary screen (4), rotary screen (4) can be followed the low reaches of oil smoke route are followed to the upstream direction in pivot axle (3) are torn open, rotary screen (4) are including can be under the drive of horizontal air current pivot cylindric filter screen portion (4b) and can be under the drive of vertical air current pivot awl section of thick bamboo form filter screen portion (4a), awl section of thick bamboo form filter screen portion (4a) with fixed connection and coaxial setting about cylindric filter screen portion (4 b).

2. The range hood according to claim 1, wherein the rotary filter mechanism further comprises an air guide frame (5) fixedly sleeved outside the rotary filter screen (4) and an upstream end bracket (6) detachably mounted at an upstream end of the air guide frame (5) along the soot path, and a fixed connection along an upstream direction and a downstream direction of the soot path is formed between an upstream end of the pivot shaft (3) and the upstream end bracket (6).

3. The range hood according to claim 2, wherein a rotary snap connection is formed between the upstream end bracket (6) and the air guide frame (5).

4. The range hood according to claim 2, wherein the rotary filter mechanism further comprises an upstream bearing sleeve seat (9) fixedly connected to the upstream end bracket (6) and an upstream bearing (10) fixedly sleeved in the upstream bearing sleeve seat (9), and the upstream bearing (10) is detachably sleeved outside the upstream end of the pivot shaft (3).

5. The extractor hood according to claim 4, wherein the rotary filter mechanism further comprises a fastener (11) sleeved between the pivot shaft (3) and the upstream bearing (10), and the fastener (11) is used for limiting the rotary filter screen (4) to move towards the upstream of the oil smoke path.

6. The range hood according to claim 1, wherein the range hood (100) further comprises a flow guide (12) fixedly arranged on a downstream end surface of the condensation plate (13) for preventing cross air flow from rushing.

7. The range hood according to claim 2, wherein the range hood (100) further comprises an air inlet filter screen (2) fixedly disposed outside the air inlet (1a), a downstream end portion of the air guide frame (5) is fixedly connected to the air inlet filter screen (2), and a fixed connection along an upstream direction and a downstream direction of the soot path is formed between a downstream end portion of the pivot shaft (3) and the air inlet filter screen (2).

8. The range hood according to claim 7, wherein the rotary filter mechanism further comprises a downstream bearing sleeve seat (7) fixedly connected to the air inlet filter screen (2) and a downstream bearing (8) fixedly sleeved in the downstream bearing sleeve seat (7), an annular limiting portion (3a) extending in the transverse direction is formed at the downstream end of the pivot shaft (3), and a bearing inner ring of the downstream bearing (8) abuts against the upstream end of the annular limiting portion (3 a).

9. The range hood according to any one of claims 1 to 8, wherein a smoke collection chamber inlet is formed between the condensation plate (13) and the lateral side wall of the smoke collection chamber (1), the range hood (100) further comprises an open-close plate (14) positioned at the smoke collection chamber inlet and a displacement mechanism for driving the open-close plate (14) to move;

the range hood (100) can be switched between a common smoking state and a powerful smoking state, the opening plate (14) and the condensation plate (13) are in butt joint along the transverse direction in the common smoking state, and the displacement mechanism drives the opening plate (14) to move towards the direction capable of expanding the inlet of the smoke collection cavity in the process of switching to the powerful smoking state.