CN218379539U

CN218379539U - Fume exhaustor

Info

Publication number: CN218379539U
Application number: CN202222003281.9U
Authority: CN
Inventors: 慕缘鹏; 龚东巧; 谷海洋; 王中妮
Original assignee: Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2023-01-24
Anticipated expiration: 2032-07-29

Abstract

The application relates to the technical field of intelligent household appliances, and discloses a range hood, include: a housing; the fresh air component is arranged in the shell; the fresh air component comprises a first fresh air outlet, a second fresh air outlet and an air deflector, and the first fresh air outlet and the second fresh air outlet are respectively arranged on two sides of the shell; the first fresh air outlet and the second fresh air outlet are respectively provided with an air deflector; the air deflector can open or close the corresponding first fresh air outlet and the second fresh air outlet; and when the air deflector is in an open state, the opening angle of the air deflector can adjust the fresh air outlet angle and the fresh air quantity. This lampblack absorber adjusts new trend air-out angle and fresh air volume through the angle of opening of adjusting the aviation baffle. And the fresh air at the two sides forms air curtains near the range hood so as to prevent the oil smoke from escaping towards the two sides. In addition, the range of the air curtain can be adjusted by the air guide plate according to the size of the oil smoke area so as to adapt to different oil smoke conditions. Therefore, the airflow structure of the smoke suction area of the range hood is improved, and the performance of the range hood is optimized.

Description

Fume exhaust fan

Technical Field

The application relates to the technical field of intelligent household appliances, for example to a range hood.

Background

In the carbon neutral background, low energy consumption buildings are rapidly developing. The residential building has higher and higher air tightness, so that indoor air cannot be supplemented in time when the user range hood discharges oil smoke. Further causing the increase of indoor negative pressure and the reduction of smoke discharge performance of the range hood. When the flue pressure is higher, even the oil smoke flows back into the room.

In the related art, a range hood is disclosed, which comprises a fume collecting hood and a fresh air purifying assembly arranged on the fume collecting hood; the fresh air purification assembly comprises a box body, a fresh air fan and a filter piece, wherein the fresh air fan and the filter piece are arranged in the box body; and an air outlet is arranged on the box body and/or the smoke collecting cover.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

the fresh air purification assembly in the related art is used for improving the comfort of a kitchen user and cannot improve the smoke exhaust performance of the range hood.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended to be a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a range hood to improve the smoke exhaust performance of the range hood.

In some embodiments, the range hood includes: a housing; and (c) and (d),

the fresh air component is arranged in the shell; the fresh air component comprises a first fresh air outlet, a second fresh air outlet and an air deflector, and the first fresh air outlet and the second fresh air outlet are respectively arranged on two sides of the shell;

air deflectors are arranged on the first fresh air outlet and the second fresh air outlet respectively;

the air deflector can open or close the corresponding first fresh air outlet and the second fresh air outlet; and when the air deflector is in an open state, the opening angle of the air deflector can be adjusted to adjust the fresh air outlet angle and the fresh air volume.

Optionally, the air deflector of the range hood includes:

a plurality of blades, the blades being rotatable; the fresh air outlet angle and the fresh air outlet quantity are adjusted by adjusting the rotation angle of the blades.

Optionally, the housing of the range hood comprises:

and the oil net is arranged in the shell, and the first fresh air outlet and the second fresh air outlet are arranged on two sides of the oil net.

Optionally, the range hood further comprises:

the smoke baffle is arranged on the shell above the oil screen; the smoke baffle is used for preventing oil smoke from escaping upwards and can increase the oil smoke suction by matching with the fresh air outlet.

Optionally, the fresh air component further comprises:

the fresh air fan is arranged in the shell;

the fresh air inlet is arranged on the shell, the inner side of the fresh air inlet is communicated with the air inlet of the fresh air fan, and the outer side of the fresh air inlet is connected with the outdoor environment through an air pipe;

the fresh air duct comprises a first fresh air duct and a second fresh air duct which are communicated with the air outlet of the fresh air fan; the first fresh air channel is communicated with the first fresh air outlet, and the second fresh air channel is communicated with the second fresh air outlet.

Optionally, a fresh air valve is arranged on the fresh air inlet and can be controlled to be opened or closed; when the fresh air component works, the fresh air valve is controlled to be opened and the opening degree of the fresh air valve can be adjusted so as to adjust the fresh air quantity.

Optionally, the housing further comprises:

the oil smoke outlet is arranged above the shell and is connected with the public flue through a pipeline;

the oil smoke fan is arranged in the shell and provides power for oil smoke suction.

Optionally, the range hood further comprises:

the first pressure sensor is used for detecting the pressure of the indoor environment where the range hood is located; so as to control the start or the close of the fresh air component according to the detected pressure.

Optionally, the range hood further comprises:

and the second pressure sensor is arranged at the fresh air inlet and used for detecting the pressure of the outdoor environment so as to adjust the fresh air volume of the fresh air component.

Optionally, the range hood further comprises:

the controller is arranged at the top of the shell and is electrically connected with the first pressure sensor and the second pressure sensor; and is electrically connected with the controlled structural part of the fresh air component; is configured to control a fresh air component according to a pressure difference between the first pressure sensor and the second pressure sensor.

The range hood provided by the embodiment of the disclosure can realize the following technical effects:

in the embodiment of the disclosure, the fresh air component is provided with two fresh air outlets which are respectively arranged on two sides of the shell of the range hood. And the fresh air outlet is provided with an air deflector, so that the fresh air outlet angle and the fresh air quantity can be adjusted. Like this, the new trend subassembly introduces the kitchen with outdoor new trend, adjusts the atmospheric pressure of the interior air of kitchen. Meanwhile, fresh air on two sides forms an air curtain near the range hood so as to prevent oil smoke from escaping towards two sides. In addition, the range of the air curtain can be adjusted by the air guide plate according to the size of the oil smoke area so as to adapt to different oil smoke conditions. Therefore, the airflow structure of the smoke suction area of the range hood is improved, and the performance of the range hood is optimized.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

fig. 1 is an overall schematic view of a range hood provided by an embodiment of the present disclosure;

fig. 2 is a schematic view of a part of a structure of a range hood provided by the embodiment of the disclosure;

fig. 3 is a schematic cross-sectional structure diagram of a range hood provided by the embodiment of the disclosure;

fig. 4 is a schematic diagram illustrating a flow direction of fresh air of a range hood provided by the embodiment of the disclosure;

fig. 5 is a schematic structural diagram of another range hood provided by the embodiment of the disclosure.

Reference numerals:

10: a housing; 20: a fresh air component; 30: a controller; 11: an oil screen; 12: an oil fume fan; 13: an oil smoke outlet; 14: a smoke baffle; 21: a first fresh air outlet; 22: a second fresh air outlet; 23: a blade; 24: a fresh air inlet; 25: a fresh air fan; 26: a first fresh air duct; 27: a second fresh air duct; 28: a fresh air valve; 31: a first pressure sensor; 32: a second pressure sensor.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more, unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

At present, low energy consumption buildings are rapidly developed, and the air tightness of residential buildings is higher and higher, so that outdoor air cannot permeate into the room when a user range hood discharges oil smoke. Further, the indoor negative pressure is increased, the smoke exhaust performance of the range hood is reduced, and even when the flue pressure is large, the oil smoke flows backward. In order to improve the smoke exhaust effect, the air quantity and the air pressure of the range hood are increased. The pressure of the flue of the residential building is further increased, the difficulty of smoke exhaust is increased, and a vicious circle is formed.

In order to solve the above problems, referring to fig. 1 to 5, an embodiment of the present disclosure provides a range hood, which includes a housing 10 of the range hood and a fresh air component 20. The fresh air component 20 is arranged inside the shell 10 of the range hood and used for introducing outdoor fresh air into a room. The fresh air module 20 includes a first fresh air outlet 21, a second fresh air outlet 22 and an air deflector, and the two fresh air outlets are respectively disposed at two sides of the casing 10. Here, if the range hood is a top-suction range hood, the two sides of the housing mean two opposite inner side walls of the housing near the oil screen. If the range hood is a side-draft range hood, the two sides of the shell are on the shell on the two sides of the oil screen. Like this, the new trend of two new trend exports can form the air curtain and enclose the oil smoke in the smoking area of lampblack absorber, reduces the excessive of oil smoke when lampblack absorber smoke discharge performance is not good. Meanwhile, the air quantity of the building is reduced by supplementing fresh air, and the energy saving performance of the building is promoted.

The first fresh air outlet 21 and the second fresh air outlet 22 are respectively provided with an air deflector which can open or close the corresponding first fresh air outlet and the second fresh air outlet; and when the air deflector is in an open state, the opening angle of the air deflector can be adjusted to adjust the fresh air outlet angle and the fresh air volume. So, can adjust the opening angle of aviation baffle based on the oil smoke to realize the regulation of fresh air volume and the regulation of wind curtain scope. So that the fresh air volume and the air curtain meet the smoking requirement of the current oil smoke volume. Specifically, when the amount of oil smoke is large, the range hood is generally in a large-air-volume smoke exhaust state. At the moment, the indoor negative pressure is large, the pressure of the flue is also large, and the opening angle of the air deflector can be adjusted to enable the opening angle of the air deflector to be in a large angle. In order to improve the air output, help reducing indoor negative pressure on the one hand, on the other hand helps the scope of increase air curtain. Thereby enhancing the air flow of the smoke suction area and optimizing the performance of the range hood. When the oil smoke amount is small, the range hood is in a smoke exhaust state with small air quantity. The indoor negative pressure is relatively small, the flue pressure is also relatively small, and the opening angle of the air deflector can be adjusted to be at a small angle. Therefore, the range of the air output and the air curtain is matched with the oil smoke volume, the indoor pressure is balanced, and the smoke exhaust effect is optimized.

In addition, it should be noted that the fresh air component 20 not only provides fresh air when the range hood works, but also provides fresh air indoors when the range hood does not work. At the moment, the rotation angle of the air deflector can be adjusted according to the indoor fresh air requirement.

In the embodiment of the present disclosure, the fresh air component 20 is provided with two fresh air outlets respectively disposed on two sides of the housing of the range hood. And the fresh air outlet is provided with an air deflector, so that the air outlet direction of the fresh air can be adjusted. Like this, the new trend subassembly introduces the kitchen with outdoor new trend, adjusts the atmospheric pressure of the interior air of kitchen. Meanwhile, the fresh air on the two sides forms an air curtain for the accessories of the range hood so as to prevent the oil smoke from escaping towards the two sides. In addition, the range of the air curtain can be adjusted by the air guide plate according to the size of the oil smoke area so as to adapt to different oil smoke conditions. Therefore, the airflow structure of the smoke suction area of the range hood is improved, and the performance of the range hood is optimized.

Alternatively, as shown in fig. 2 and 4, the air deflector comprises a plurality of blades 23, and the blades 23 can rotate. The fresh air outlet angle and the fresh air outlet quantity are adjusted by adjusting the rotation angle of the blades 23.

Here, the air deflector includes a plurality of rotatable blades 23, and the blades 23 of the first fresh air outlet 21 and the second fresh air outlet 22 may be respectively provided with a driving member, or may share one driving member. When the driving members are respectively disposed on the blades 23 of the first fresh air outlet 21 and the second fresh air outlet 22, the rotation angles of the corresponding blades 23 may be the same or different. As an example, when the blades 23 of the two fresh air outlets are respectively adjusted, only one gas stove of the cooking bench is in operation, and the oil smoke is mainly concentrated above the operating gas stove. That is to say, the oil smoke mainly concentrates on one side of lampblack absorber, and at this moment, the air outlet angle of the blade 23 of the fresh air outlet close to the oil smoke region can be adjusted to be large, and the air outlet angle of the blade 23 of the fresh air outlet far away from the oil smoke region can be adjusted to be small. Like this for the air curtain of air-out is suitable and can surround the oil smoke region. So, the turned angle of the blade of two new trend exports can be adjusted according to the oil smoke position.

As another example, when the blades 23 of two fresh air outlets share the same driving member, the adjustment directions of the rotation angles of the blades are opposite, as shown in fig. 4. In this case, two sets of blades are adjusted based on the greater of the blade rotation angles. Similarly, when the oil smoke is mainly concentrated on one side of the oil press, the rotation angle of the blade of the fresh air outlet close to the oil smoke area needs to be adjusted to be larger, and the rotation angle of the blade of the fresh air outlet far away from the oil smoke area needs to be adjusted to be smaller. Then adjust according to great air-out angle, adjust according to the turned angle of the blade of the nearer new trend export in distance oil smoke region promptly.

In addition, the number of the blades 23 of each fresh air outlet can be 2-3. When the fresh air component 20 is operated, i.e. fresh air is introduced, the blades 23 are in an open state. When the fresh air component 20 is not in operation, the vanes 23 are in a closed state. Like this, avoid indoor oil smoke to get into new trend subassembly 20, to the inside pollution that causes of new trend subassembly 20.

Optionally, the range hood further comprises an oil screen 11 disposed within the housing. The first fresh air outlet 21 and the second fresh air outlet 22 are disposed on two sides of the oil net 11.

Here, the range hood is a side-draft range hood, and the oil screen 11 is a curved surface or is disposed on a front panel of the housing. In this case, the first fresh air outlet 21 and the second fresh air outlet 22 are disposed on the casing 10 at two sides of the oil net 11, that is, the first fresh air outlet 21 and the second fresh air outlet 22 are located on the same curved surface or plane as the oil net 11. After the fresh air of the two fresh air outlets is sent out, the fresh air is sucked into the flue by the range hood around the periphery of the oil smoke. The flow direction of the fresh air can be seen in detail in fig. 3. Therefore, the oil smoke can be surrounded by the wind at the fresh air outlet, and the oil smoke is prevented from escaping. Simultaneously, increase oil smoke suction speed also helps improving user's comfort.

In addition, the first fresh air outlet 21 and the second fresh air outlet 22 are located on the same curved surface or plane with the oil screen 11, so that the included angle between the maximum rotation angle of the blades 23 of the fresh air outlets and the curved surface is smaller than 90 degrees. When the included angle between the vane 23 and the curved surface is 90 degrees, the vane 23 is perpendicular to the curved surface. In this case, although the air curtain range formed by the air outlet of the fresh air is the largest, the fresh air loss is larger. The effect of improving the oil smoke suction speed is reduced. Therefore, the included angle between the maximum rotation angle of the blade 23 of the fresh air outlet and the curved surface can be smaller than 90 degrees.

Optionally, the range hood further comprises a smoke barrier 14. The smoke baffle 14 is arranged on the shell above the oil screen 11, and the smoke baffle 14 is used for blocking the upward escape of the oil smoke.

Here, the range hood is a side-draft range hood, and it can be understood that a front panel of a housing of the side-draft range hood is mainly an oil screen. Although the front panel is usually a cambered surface structure, part of the oil smoke can escape from the upper part. In order to reduce the escape of the oil smoke from the upper part of the oil screen, a smoke baffle plate 14 is arranged above the oil screen, and the smoke baffle plate 14 is fixed on the shell. Therefore, the fresh air at the left side and the right side of the oil screen and the smoke baffle plate 14 above the fresh air form an enclosure ring, and oil smoke can be effectively blocked. The oil fume suction speed of the range hood is improved, and the performance of the range hood is improved.

Optionally, the fresh air assembly further includes a fresh air inlet 24, a fresh air blower 25 and a fresh air duct. Wherein, the fresh air inlet 24 is disposed on the casing 10, and the outside thereof is communicated with the outdoor environment through an air duct. The fresh air fan 25 is disposed in the casing 10, and has an air inlet communicated with the inner side of the fresh air inlet 24 and an air outlet communicated with the fresh air duct. The fresh air duct is disposed in the casing 10 and includes a first fresh air duct 26 and a second fresh air duct 27 communicated with an air outlet of the fresh air blower. The first fresh air duct 26 and the second fresh air duct 27 are connected in parallel and are disposed along the inner wall of the casing 10. The end of the first fresh air duct 26 is communicated with the first fresh air outlet 21, and the end of the second fresh air duct 27 is communicated with the second fresh air outlet 22. Thus, the outdoor fresh air enters the fresh air inlet 24 from the air pipe under the action of the fresh air fan 25. Then the air is sent into a first fresh air duct 26 and a second fresh air duct 27 by a fresh air fan 25. Sent out by a first fresh air outlet 21 and a second fresh air outlet 22.

In addition, because of new trend subassembly 20 sets up inside the lampblack absorber, the lampblack absorber still includes parts such as oil smoke fan 12, fan spiral case and exhaust fume channel. Therefore, the position of the fresh air component 20 is positioned at one side of the range hood. The first fresh air duct 26 and the second fresh air duct 27 have different lengths, and the air output of the two fresh air outlets may be slightly different under the same opening degree.

Optionally, a fresh air valve 28 is disposed on the fresh air inlet 24. The fresh air valve 28 can be controlled to open or close. When the fresh air component 20 works (i.e. fresh air needs to be introduced due to large indoor negative pressure), the fresh air valve 28 can be controlled to be opened and the opening degree can be adjusted. Therefore, the fresh air volume can be adjusted so as to be matched with the indoor pressure requirement. Specifically, when the indoor oil smoke amount is large, the wind shield of the range hood is also large. The indoor negative pressure is relatively large, and at the moment, a large fresh air volume is needed indoors. The fresh air valve 28 is controlled to open a larger opening degree so as to introduce more fresh air and relieve the indoor negative pressure. When the indoor oil smoke amount is small, the wind shield of the range hood is small, and the indoor negative pressure is small. At this time, a small fresh air volume is required in the room, and the fresh air valve 28 is controlled to open by a small opening degree. And fresh air volume matched with the indoor negative pressure is introduced to relieve the indoor negative pressure. Thereby enhancing the smoke exhaust performance of the range hood.

Furthermore, when the indoor fresh air volume is adjusted, the rotation angle of the fresh air outlet blade 23 can be synchronously adjusted according to the oil smoke volume. For example, the larger the amount of soot, the larger the rotation angle of the vane 23. The larger the air output is, and the larger the range of the air curtain formed by the two fresh air outlets is, so as to surround the oil smoke. The smaller the amount of oil smoke, the smaller the rotation angle of the vane 23. The air output is smaller, and the range of the air curtain formed by the two fresh air outlets is smaller. Therefore, the rotation angle of the vane 23 and the opening degree of the fresh air valve 28 are different under different oil smoke conditions so as to adapt to corresponding working conditions.

Further, when the indoor fresh air volume is adjusted, the rotation speed of the fresh air fan 25 can be adjusted according to the opening degree of the fresh air valve 28. Generally, the greater the opening of the fresh air valve 28, the faster the rotation speed of the fresh air fan 25. Here, a relation table between the opening of the fresh air valve 28 and the rotation speed of the fresh air fan 25 may be established, that is, different opening ranges of the fresh air valve 28 correspond to different rotation speeds of the fresh air fan 25. In this way, in the case of determining the current opening degree of the fresh air valve 28, the rotation speed of the fresh air fan 25 can be obtained by looking up the table. And then the fresh air fan 25 is controlled to operate at the determined rotating speed.

Optionally, the range hood further comprises a smoke outlet 13 and a smoke fan 12. The oil smoke outlet 13 is connected with the public flue through a smoke exhaust pipeline. The oil smoke blower 12 is disposed inside the oil net 11 and fixed to the housing 10. The oil smoke generated by indoor cooking is discharged into the public flue through the oil screen 11, the oil smoke fan 12 and the oil smoke outlet 13. As shown in fig. 2, the oil smoke blower 12 is disposed inside the casing and faces the oil mesh 11. The volute outlet of the oil smoke blower 12 is connected with an oil smoke outlet 13, and the oil smoke outlet 13 is arranged at the top of the shell 10 and is communicated with a common flue through an oil smoke pipeline.

Optionally, as shown in fig. 5, the range hood further includes a first pressure sensor 31. The first pressure sensor 31 is disposed on the housing 10 of the range hood and is used for detecting the pressure of the indoor environment where the range hood is located. To control the activation or deactivation of the fresh air component 20 in response to the sensed pressure.

Here, the first pressure sensor 31 may be provided on the smoke barrier 14, or on the housing above the smoke barrier 14. Therefore, the indoor pressure detection point is close to the oil smoke area of the range hood, and the negative pressure formed indoors when the range hood smokes can be accurately reflected. Meanwhile, the influence of wind pressure formed by the flow of fresh air or oil smoke on the pressure detection value is avoided.

Further, on the basis of the detected pressure value, the start or the shut-off of the fresh air component 20 is controlled. Specifically, a pressure threshold may be set, and the fresh air component 20 is controlled to start when the detected pressure is less than the pressure threshold. The pressure threshold is the corresponding indoor negative pressure value when the smoke exhaust performance of the range hood is deteriorated, namely, the indoor pressure is continuously smaller than the pressure threshold, the smoke exhaust performance of the range hood is affected, and the smoke exhaust difficulty is increased. At this time, the fresh air module 20 needs to be turned on. When the indoor pressure is greater than or equal to the pressure threshold, the indoor pressure is relatively high, and the great influence on the emission of indoor oil smoke cannot be generated. In this case, the fresh air component 20 may be turned off. Wherein, the fresh air component 20 is started, that is, the fresh air valve 28 is opened, and the blade 23 of the fresh air outlet is opened. When the fresh air component 20 is closed, the fresh air valve 28 is closed, and the blade 23 of the fresh air outlet is in a closed state.

Further, the fresh air component 20 can be adjusted according to the magnitude of the detection value of the first pressure sensor 31. Specifically, the smaller the detection value of the first pressure sensor 31 is, the larger the opening degree of the fresh air valve 28 of the fresh air component 20 is, and the larger the air outlet angle of the blade 23 of the fresh air outlet of the fresh air component 20 is. Therefore, the indoor pressure can be increased as soon as possible, so that the airflow in a smoke suction area is improved, and the smoke discharge performance of the range hood is optimized. In addition, the rotation speed of the fresh air fan 25 of the fresh air component 20 can be adjusted based on the detection value of the first pressure sensor 31. The smaller the detection value of the first pressure sensor 31 is, the faster the rotation speed of the fresh air fan 25 of the fresh air module 20 is.

Optionally, the range hood further comprises a second pressure sensor 32. The second pressure sensor 32 is arranged at the fresh air inlet 24 and used for detecting the pressure of the outdoor environment; to adjust the fresh air volume of the fresh air module 20.

Here, the second pressure sensor 32 is provided outside the fresh air valve 28. The pressure of the outdoor environment is detected, and the fresh air volume of the fresh air component 20 is adjusted based on the pressure of the indoor environment and the pressure of the outdoor environment. Specifically, if the difference between the pressure detection value of the second pressure sensor 32 and the pressure detection value of the first pressure sensor is greater than the pressure difference threshold, it indicates that fresh air is needed indoors. The fresh air component 20 is controlled to start, and the parameter of the fresh air component 20 is adjusted according to the difference value. For example: the larger the difference is, the larger the opening degree of the fresh air valve 28 is, the higher the rotation speed of the fresh air fan 25 is, and the larger the opening degree of the blade of the fresh air outlet is.

Optionally, the range hood further comprises a controller 30. The controller 30 is disposed on the top of the housing, electrically connected to the first pressure sensor 31 and the second pressure sensor 32, and electrically connected to the controlled structure of the fresh air component. The controller 30 is configured to control the fresh air component 20 according to a pressure difference between the first pressure sensor 31 and the second pressure sensor 32.

Here, the controller 30 is electrically connected to the fresh air valve 28 of the fresh air module 20 and the driving member of the blade 23 (i.e., the controller is electrically connected to the controlled structure of the fresh air module) for adjusting the controlled structure of the fresh air module according to the pressure difference between the first pressure sensor 31 and the second pressure sensor 32. Specifically, in the case that the first pressure sensor detects that the pressure in the chamber is smaller than the pressure threshold, the fresh air component 20 is controlled to start (i.e. the fresh air valve 28 is opened, and the blade 23 rotates by a certain angle). Fresh air is introduced into the fresh air component 20, and the indoor pressure is gradually improved. During the chamber pressure adjustment, the pressure difference between the first pressure sensor 31 and the second pressure sensor 32 is further acquired. If the absolute value of the pressure difference is smaller than the lower limit value of the preset pressure range, the indoor negative pressure is large, and the fresh air valve 28 needs to be opened to the maximum opening degree. If the opening of the fresh air valve 28 does not reach the maximum opening, the opening of the fresh air valve 28 needs to be increased. If the absolute value of the pressure difference is larger than the upper limit value of the preset pressure range, the negative pressure in the room is reduced and is recovered to the allowable normal pressure, and the fresh air valve 28 is required to be closed. If the opening of the fresh air valve 28 is not completely closed, the opening of the fresh air valve 28 needs to be reduced. In this way, the chamber pressure is maintained within a reasonable range. Meanwhile, the rotation angle of the vanes is adjusted according to the oil smoke as shown in the foregoing.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and illustrated in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A range hood, comprising:

a housing;

the first fresh air outlet and the second fresh air outlet are respectively provided with the air deflectors; the air deflector can open or close the corresponding first fresh air outlet and the second fresh air outlet; and when the air deflector is in an open state, the opening angle of the air deflector can be adjusted to adjust the fresh air outlet angle and the fresh air volume.

2. The range hood of claim 1, wherein the air deflector comprises:

3. The range hood of claim 1, further comprising:

the oil net is arranged in the shell, and the first fresh air outlet and the second fresh air outlet are arranged on the shell on two sides of the oil net.

4. A range hood as set forth in claim 3, further comprising:

5. The range hood of claim 1, wherein the fresh air assembly further comprises:

the fresh air fan is arranged in the shell;

6. A fume exhaustor according to claim 5,

the fresh air inlet is provided with a fresh air valve which can be controlled to be opened or closed; when the fresh air component works, the fresh air valve is controlled to be opened and the opening degree of the fresh air valve can be adjusted so as to adjust the fresh air quantity.

7. The range hood of claim 1, wherein the housing further comprises:

the oil smoke outlet is arranged above the shell and is connected with a public flue through a pipeline;

and the oil fume fan is arranged in the shell and provides power for oil fume suction.

8. A range hood according to any of claims 1 to 7, further comprising:

the first pressure sensor is arranged on the shell; the pressure sensor is used for detecting the pressure of the indoor environment where the range hood is located; so as to control the start or the close of the fresh air component according to the detected pressure.

9. The range hood of claim 8, further comprising:

10. A range hood as set forth in claim 9, further comprising:

the controller is arranged at the top of the shell, is electrically connected with the first pressure sensor and the second pressure sensor, and is electrically connected with a controlled structural member of the fresh air assembly; is configured to control the fresh air component according to a pressure difference between the first pressure sensor and the second pressure sensor.