CN111780183B

CN111780183B - Smoke exhaust ventilator

Info

Publication number: CN111780183B
Application number: CN202010644631.2A
Authority: CN
Inventors: 梁泽锋; 刘智; 曲绍鹤; 李忠华; 张野
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2023-04-11
Anticipated expiration: 2040-07-06
Also published as: CN111780183A

Abstract

The invention discloses a range hood, comprising: the range hood main body comprises a decoration cover and a smoke collecting cover arranged below the decoration cover, wherein a smoke suction duct is arranged in the decoration cover; the air purification device comprises a purification air channel which is arranged in the decoration cover and is not communicated with the oil fume suction air channel, and a filtering piece and a purification fan which are arranged in the purification air channel; the outer surface of the cigarette machine main body is provided with an air inlet communicated with the purification air channel and an air outlet communicated with the purification air channel. The technical scheme of the invention can further reduce the pollution of the oil smoke to the air environment and the damage to the health of human bodies.

Description

Smoke exhaust ventilator

Technical Field

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

Background

During the cooking process, oil smoke is generated, and the oil smoke not only pollutes the air environment, but also damages the health of human bodies. The traditional range hood can rapidly discharge oil smoke to the outside, and reduces the pollution to the air environment in a kitchen and the damage to the health of human bodies. However, during cooking, there is always oil smoke escaping from the conventional range hood and dissipating into the kitchen space. The escaping oil smoke can still cause oil smoke pollution and harm to the health of human bodies.

Disclosure of Invention

The invention mainly aims to provide a range hood, aiming at further reducing the pollution of oil smoke to the air environment and the damage to the health of human bodies.

In order to achieve the above object, the range hood provided by the present invention comprises:

the range hood main body comprises a decorative cover and a smoke collecting cover arranged below the decorative cover, wherein a smoke suction air duct is arranged in the decorative cover; and

the air purification device comprises a purification air channel which is arranged in the decoration cover and is not communicated with the oil fume suction air channel, and a filter element and a purification fan which are arranged in the purification air channel;

the outer surface of the cigarette machine main body is provided with an air inlet communicated with the purification air channel and an air outlet communicated with the purification air channel.

On one hand, through the cooperative work of the air purification device and the smoke machine main body, most of the oil smoke can be discharged outdoors, and a small part of the oil smoke can be circularly purified and removed, so that the pollution of the oil smoke to the air environment and the damage to the health of a human body are further reduced; on the other hand, the air purification device is hidden in the decorative cover, so that the appearance of the range hood is simpler.

Optionally, the air inlet is arranged on the side surface of the decorative cover to facilitate the oil smoke escaping to the side of the range hood to be sucked into the purification air duct, so as to reduce the oil smoke at the side of the range hood; alternatively, the first and second liquid crystal display panels may be,

the air inlet is arranged at the upper part of the front surface of the decorative cover or the top of the main body of the range hood so as to be beneficial to sucking the oil smoke accumulated in the upper space of the kitchen due to the thermal plume effect.

Optionally, two opposite side surfaces of the decorative cover are respectively provided with one air inlet.

Therefore, the oil smoke escaping upwards from the two sides of the range hood can be sucked and purified.

Optionally, the air outlet is arranged on the front side of the decorative cover, so that forward air outlet is easy to realize, and the forward air outlet is favorable for conveying purified air to a breathing area of a user, so that the air quality of the breathing area of the user is favorably improved; alternatively, the first and second liquid crystal display panels may be,

the air outlet is arranged at the top of the cigarette machine main body so as to be beneficial to pushing down the oil smoke accumulated in the upper space of the kitchen to be sucked and purified by the air purifying device; alternatively, the first and second liquid crystal display panels may be,

the air outlet is arranged on the side surface of the decoration cover or the bottom of the cigarette machine main body, so that purified air can be discharged.

Optionally, the air outlet direction of the air outlet is adjustable.

Therefore, the air outlet direction can be changed to meet more air outlet requirements of the air outlet.

Optionally, the decorative cover is provided with a filter mounting port, and the filter element is detachably arranged in the purification air duct through the filter mounting port.

Thus, the filter element can be conveniently detached, cleaned or replaced.

Optionally, a filter cover is arranged on the filter mounting opening.

So, will filter a piece certainly strain a piece installing port and pack into and purify the wind channel after, will strain a lid and close and strain a piece installing port, can avoid filtering a piece and shake out, improve the structural stability of product, can also avoid foreign matter etc. to get into in the purification wind channel from straining a piece installing port simultaneously.

Optionally, the air purification device further comprises a purification housing arranged in the decoration cover, the purification air duct is at least partially defined by the purification housing, and the purification housing is provided with an air inlet through opening communicated with the air inlet and an air outlet through opening communicated with the air outlet; purify the casing and correspond it is equipped with the installation mouth to strain a mounting hole, it passes through to filter the piece mounting hole with the installation mouth with purify the casing and can dismantle the connection.

It can be understood that the independent purification shell is arranged, the purification air channel can be more accurately limited, and therefore the trend of the purified air flow is accurately guided, and the purification efficiency is improved.

Optionally, the range hood body further comprises a fan guard disposed within the decorative cover, the range hood duct is at least partially defined by the fan guard, and the purge shell is disposed on a front surface of the fan guard.

So, can make to purify the casing more be close to decorate and cover the air outlet setting to shorten and purify the casing with distance between the air outlet can conveniently purify on the casing air-out through mouthful with intercommunication between the air outlet.

Optionally, the purification fan is a centrifugal fan, a centrifugal volute for installing the centrifugal fan is arranged in the purification shell, an air outlet side of the centrifugal volute faces downwards and is bent forwards to extend an air guide section, and the air guide section extends to a position connected with the air outlet; and one end of the air guide section, which is far away from the centrifugal volute, is provided with the air outlet.

Through bending and extending the setting of the air guide section can realize forward air supply under the condition that the axial direction of the centrifugal fan is vertical or nearly vertical to the fan cover, at the moment, the mounting space of the front and back directions required by the centrifugal fan is small, and the size of the decorative cover can be avoided being too large.

According to the technical scheme, on one hand, the air purification device is additionally arranged, so that most of oil smoke generated in the cooking process is discharged to the outside through the oil smoke suction air duct when the air purification device and the smoke machine main body work cooperatively, a small part of oil smoke can escape to other spaces in a kitchen, and the small part of oil smoke can be further removed through the purification air duct of the air purification device, so that the pollution of the oil smoke to the air environment and the damage to the health of a human body are further reduced; on the other hand, the air purification device is hidden in the decorative cover, so that the appearance of the range hood is simpler.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural view of a range hood according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the range hood of FIG. 1 with the decorative cover and the filter member removed;

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

FIG. 4 is an enlarged schematic view at A in FIG. 3;

FIG. 5 is a schematic cross-sectional view of another perspective of the range hood of FIG. 1;

FIG. 6 is an enlarged schematic view at B of FIG. 5;

FIG. 7 is a schematic cross-sectional view of a portion of the range hood of FIG. 1 from another perspective;

FIG. 8 is an enlarged schematic view at C of FIG. 7;

fig. 9 is a schematic view of the air circulation path of the range hood of fig. 1.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Cigarette machine main body	11	Decorative cover
12	Exhaust fume collecting hood	13	Fan cover
				111	Air inlet	112	Air outlet
113	Filter element mounting port	100	Air guide vane
				2	Air purifying device	21	Purifying shell
22	Filter element	23	Purifying fan
				24	Filter cover	211	Air inlet
212	Air outlet	213	Mounting through opening
				214	Centrifugal volute	215	Wind guide section
216	Guide rail	221	HEPA filter screen
				222	Active carbon filter screen	3	Controller
4	Control switch

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that if directional indications (such as up, down, left, right, front, back, 8230) \8230;) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components in a specific posture, the motion situation, etc., and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, if the meaning of "and/or" and/or "appears throughout, the meaning includes three parallel schemes, for example," A and/or B "includes scheme A, or scheme B, or a scheme satisfying both schemes A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a range hood.

Referring to fig. 1 to 3, in an embodiment of the present invention, the range hood includes:

the range hood main body 1 comprises a decoration cover 11 and a smoke collecting cover 12 arranged below the decoration cover 11, wherein a smoke suction duct is arranged in the decoration cover 11; and

the air purification device 2 comprises a purification air channel which is arranged in the decoration cover 11 and is not communicated with the oil smoke suction air channel, and a filtering piece 22 and a purification fan 23 which are arranged in the purification air channel;

the outer surface of the cigarette machine main body 1 is provided with an air inlet 111 communicated with the purification air channel and an air outlet 112 communicated with the purification air channel.

In the embodiment, the smoke inlet of the oil smoke suction duct is communicated with the indoor and is usually suspended above a kitchen range so as to suck oil smoke into the oil smoke suction duct; the smoke outlet of the oil smoke suction duct is communicated with the outside so as to discharge oil smoke to the outside; of course, the oil fume suction duct is internally provided with an oil fume fan for enabling the airflow to flow from the fume inlet to the fume outlet. It can be understood that the range hood main body 1 has the functions of the traditional range hood.

The cleaning fan 23 of the air cleaning device 2 is used to make the air flow from the air inlet 111 to the air outlet 112 through the cleaning air duct. The air inlet 111 with the air outlet 112 all communicates indoorly, the air inlet 111 is used for inhaling the indoor air in kitchen, and the filter piece 22 of air purification device 2 is used for filtering the air of inhaling and purifying, the air outlet 112 is used for discharging the air after filtering the purification back to in kitchen indoorly. When air purification device 2 and cigarette machine main part 1 collaborative work, the produced oil smoke of culinary art process mostly passes through oil absorption cigarette wind channel discharges to outdoors, and other spaces in the kitchen can be escaped to the tiny part oil smoke, and this tiny part oil smoke accessible air purification device 2's purification wind channel obtains further getting rid of to further reduce the pollution of oil smoke to air environment and the harm to health.

In addition, in the embodiment, the air purifying device 2 is hidden in the decoration cover 11, so that the appearance of the range hood is simpler.

Optionally, the air inlet 111 is disposed on a side surface of the decoration cover 11 to facilitate oil smoke escaping to a side of the range hood to be sucked into the purification air duct, so as to reduce oil smoke at the side of the range hood; particularly, when a dual-burner kitchen range is used below the range hood, the cooking fumes generated during cooking easily escape from the side of the range hood, and the air inlet 111 disposed on the side of the decorative cover 11 is more beneficial to sucking the cooking fumes.

Optionally, two opposite side surfaces of the decoration cover 11 are respectively provided with one air inlet 111, so as to reduce oil smoke on two sides of the range hood. Of course, the air inlet 111 may be provided only on one of the two sides of the trim cover 11. Optionally, an air inlet grille is arranged on the air inlet 111 to prevent hands and other foreign objects from extending into the decoration cover 11.

Optionally, two filter elements 22 are provided, and each filter element 22 is disposed adjacent to one of the air inlets 111; thus, once the air with oil smoke enters the purifying air duct, the air with oil smoke can be filtered by the filter element 22, and the probability that the air with oil smoke pollutes other devices in the purifying air duct is reduced. However, the design is not limited thereto, and in other embodiments, only one filtering element 22 may be disposed near the air outlet 112, so as to purify and discharge the oil smoke in the air.

In this embodiment, the air inlet 111 is disposed on a side surface of the decoration cover 11; however, the design is not limited thereto, and in other embodiments, the air inlet 111 may also be disposed at the upper portion of the front surface of the decoration cover 11 or at the top of the main body 1 of the range hood, so as to facilitate the suction of the oil smoke accumulated in the upper space of the kitchen due to the thermal plume effect, thereby facilitating the air circulation and purification of the whole space of the kitchen. When the air inlet 111 is arranged at the top of the cigarette maker body 1, it is usually arranged on the top plate of the cigarette maker body 1 connected with the decorative cover 11; of course, in some other embodiments, when the top of the decorative cover 11 is bent to form a wider top flange, the air inlet 111 may be formed on the top flange.

Optionally, the smoke ventilator of the smoke ventilator main body 1 and the purification fan 23 of the air purification device 2 are connected to the same controller 3, that is, the smoke ventilator controls the smoke ventilator main body 1 and the air purification device 2 through the same controller 3. However, the design is not limited thereto, and in other embodiments, the range hood may also be provided with two different controllers 3 to respectively control the oil smoke blower of the range hood main body 1 and the purification blower 23 of the air purification device 2.

Optionally, the smoke ventilator of the smoke ventilator main body 1 and the purifying fan 23 of the air purifying device 2 share one control switch 4, so that when the smoke ventilator of the smoke ventilator main body 1 is turned on through the control switch 4 to work, the purifying fan 23 of the air purifying device 2 is automatically turned on to work at the same time, that is, the cooperative work of turning on the smoke ventilator main body 1 and the air purifying device 2 by one key can be realized. The control switch 4 is usually electrically connected to the controller 3 to realize the on/off control. The control switch 4 is normally provided on the smoke collecting hood 12. However, the design is not limited to this, in other embodiments, the oil smoke blower of the cigarette machine main body 1 and the purification blower 23 of the air purification device 2 may also use different control switches 4 respectively, so as to realize the independent on/off control of the cigarette machine main body 1 and the air purification device 2, so that the user can use the oil smoke exhaust function and the air purification function of the range hood more flexibly.

Referring to fig. 1 to 3, in an embodiment, the air outlet 112 is disposed on a front surface of the trim cover 11; thus, after the purifying fan 23 of the air purifying device 2 is turned on, the air outlet 112 blows forward or at least has a forward wind component. In the cooking process, a user usually stands in front of the range hood, and the space in front of the range hood can be defined as a user breathing zone. It can be understood that the forward air outlet is favorable for conveying the purified air to the user breathing area, thereby being favorable for improving the air quality of the user breathing area, further reducing the probability of the user sucking the oil smoke, and reducing the harm of the oil smoke to the health of the user.

Optionally, the air outlet 112 is located at the lower part of the trim cover 11; it will be appreciated that the lower portion of the trim cover 11 is closer to the user's breathing zone, which is more conducive to delivering purified air to the user's breathing zone.

However, the design is not limited thereto, in some other embodiments, the air outlet 112 may also be disposed at the top of the smoke machine body 1 to facilitate pushing down the oil smoke accumulated in the upper space of the kitchen for being sucked and purified by the air purifying device 2, so as to bring the oil smoke in the upper part of the kitchen space into the air circulation purification, thereby further reducing the oil smoke in the kitchen; similarly, the outlet 112 is typically provided in the top panel of the cigarette maker body 1 that is attached to the trim cover 11, although the inlet 111 may be provided in the top flap of the trim cover 11 when the flap is folded to provide a wider top flap.

In other embodiments, the air outlet 112 may be disposed at the side of the decoration cover 11 or at the bottom of the cigarette maker body 1, so as to discharge the purified air. It should be noted that when the air outlet 112 is arranged at the bottom of the main body 1 of the cigarette making machine, it is usually arranged at the bottom of the smoke collecting hood 12; it will be appreciated that the clean air duct is also partially disposed within the hood 12 at this time. Optionally, the air outlet direction of the air outlet 112 is adjustable; therefore, the air outlet direction can be changed to meet more air outlet requirements of the air outlet 112 for users, for example, the requirements of users with different heights for direct blowing or non-direct blowing are met.

Referring to fig. 5 and fig. 6 together, optionally, the air purification apparatus 2 further includes a wind guiding blade 100, where the wind guiding blade 100 is rotatably disposed at the air outlet 112, so as to adjust the wind outlet direction of the air outlet 112 by rotating the wind guiding blade 100, and the wind outlet direction of the air outlet 112 is continuously adjustable. However, the design is not limited to this, and in other embodiments, a plurality of air guiding frames for fixing the air guiding blades 100 may be installed on the air outlet 112, and the air guiding frames are configured, and the inclination angles of the air guiding blades 100 of different air guiding frames are different, so that the air outlet direction of the air outlet 112 can be changed by replacing different air guiding frames.

When the air outlet 112 is arranged on the front surface of the decorative cover 11, optionally, for the technical scheme that the air guide vane 100 is rotatable, the air guide vane 100 extends along the transverse direction, and in the rotating process of the air guide vane 100, the included angle between the air guide vane 100 and the horizontal plane ranges from-90 degrees to 90 degrees; it can be understood that when the included angle between the wind guide vane 100 and the horizontal plane is less than zero, it indicates that the wind guide vane 100 is inclined downward for guiding wind, and when the included angle between the wind guide vane 100 and the horizontal plane is greater than zero, it indicates that the wind guide vane 100 is inclined upward for guiding wind; in this embodiment, the wind guiding direction of the wind guiding blade 100 can be continuously adjustable from approximately vertical downward to approximately vertical upward.

Further optionally, an included angle between the air guide vane 100 and the horizontal plane ranges from-45 ° to 45 °, and under the included angle, the air guide direction of the air guide vane 100 can ensure a larger ventilation rate of the air outlet 112 while considering a user breathing area and an oil smoke accumulation area in front of and above the range hood; it can be understood that the wind resistance generated by the wind guide vane 100 is larger as the included angle between the wind guide vane 100 and the horizontal plane is closer to-90 ° or 90 °.

In other embodiments, the angle between the wind-guiding blade 100 and the horizontal plane may range from 30 ° to 75 °. It can be understood that, in this rotation range, the wind guiding vanes 100 are all extending obliquely upward, so that the wind blown out from the wind outlet 112 is mainly delivered in an obliquely upward direction, and thus has a large upward wind outlet component, and the upward wind outlet component can push the oil smoke in the upper half part of the kitchen space to flow downward, so as to be sucked and purified by the wind inlet 111, and thus the oil smoke in the upper half part of the kitchen space is taken into the air circulation purification (as shown in fig. 9), which can further reduce the oil smoke in the kitchen.

During cooking, edible oil and food undergo a series of chemical reactions such as oxidation, cracking and polymerization at high temperature, a large amount of organic smoke is evaporated, and partial decomposition products are emitted into air in the form of oil mist to form oil smoke. The oil fume includes both edible oil and its heated decomposed or cracked product and the physical and chemical reaction of protein, high molecular compound and various seasonings in food, and is one kind of matter containing gas, liquid and solid. Generally, the Particulate Matter Emission (PME) composed of liquid and solid in the oil smoke emission is defined as PME, and the Volatile Organic Compounds emission (VOCs) is defined as VOCs, and the oil smoke is composed of the above two substances.

In one embodiment, the filter 22 includes a HEPA filter 221 (high efficiency air filter) and an activated carbon filter 222 (see fig. 4). Wherein, HEPA filter screen 221 mainly used filters particulate matter (liquid and solid) in the oil smoke, and its material can include PP filter paper (polypropylene filter paper), glass fiber, PTFE filter paper (polytetrafluoroethylene filter paper), nanofiber, melt-blown dacron non-woven fabrics etc. and it is big to have the dust holding capacity, characteristics that the filter fineness is high, and filtration efficiency to the oil smoke particulate matter can exceed 90% to can process into required size and shape according to the model needs. The activated carbon filter screen 222 is mainly used for filtering volatile organic compounds (odors) in the oil smoke, and the material of the activated carbon filter screen may include activated carbon fibers, activated carbon particles, and the like, and the adopted activated carbon material may be coconut shells, fruit shells, coal-based carbon, and the like, which has a large specific surface area, or the adopted activated carbon material may be a molecular sieve material, which has a good adsorption effect. Optionally, the HEPA filter 221 is located upstream of the activated carbon filter 222 in the airflow direction, so that the particles in the oil smoke can be prevented from adhering to the activated carbon filter 222, thereby prolonging the service life of the activated carbon filter 222.

Optionally, in the direction of the air flow, the filter element 22 is located upstream of the purge fan 23; so, can make the air current through purification fan 23 be the air current after the purification, avoid the oil smoke to be in purification fan 23 is last to gather, prolongs purification fan 23 life-span.

Referring to fig. 1 to 4, 7 and 8, in an embodiment, the decoration cover 11 is provided with a filter mounting opening 113, and the filter 22 is detachably disposed on the purification air duct through the filter mounting opening 113; in this manner, removal, cleaning or replacement of the filter element 22 may be facilitated. It will be appreciated that the filter element 22 generally has a certain life, for example, the HEPA filter 221 used in the present embodiment has a design life of generally more than 1 month, and needs to be replaced after the life is reached, so as to ensure the good purification capability of the air purification apparatus 2, and in addition, the filter element is periodically or aperiodically removed for cleaning or cleaning, which is beneficial to prolong the life.

Optionally, a filter cover 24 is arranged on the filter mounting port 113; so, will filter piece 22 certainly filter a mounting hole 113 and pack into and purify the wind channel after, will filter a lid 24 lid and close and filter a mounting hole 113, can avoid filtering piece 22 and shake out, improve the structural stability of product, can also avoid foreign matter etc. to get into from filtering a mounting hole 113 simultaneously and purify in the wind channel.

Optionally, the air purifying device 2 further includes a purifying housing 21 disposed in the decorative cover 11, the purifying air duct is at least partially defined by the purifying housing 21, and the purifying housing 21 is provided with an air inlet 211 communicating with the air inlet 111 and an air outlet 212 communicating with the air outlet 112. It can be understood that the independent purifying shell 21 can limit the purifying air channel more accurately, so as to guide the trend of the purifying air flow accurately and improve the purifying efficiency, and in addition, the purifying shell 21 can more conveniently provide attachment for the filtering element 22 and the purifying fan 23; however, the design is not limited to this, and in other embodiments, a partition plate or the like may be simply provided in the decoration cover 11 to separate the purification air duct. Without loss of generality, the purifying housing 21 is provided with a mounting through hole 213 corresponding to the filter mounting hole 113, and the filter 22 is detachably connected with the purifying housing 21 through the filter mounting hole 113 and the mounting through hole 213.

In this embodiment, the filter cover 24 provided in the filter attachment port 113 is connected to the purge case 21. However, the design is not limited thereto, and in other embodiments, the filter cover 24 may be connected to the decorative cover 11. In addition, in this embodiment, optionally, one side of the filter cover 24 is rotatably connected to the purifying housing 21, and the other side is detachably connected to the purifying housing 21; in this way, after the filter cover 24 is opened, the filter cover 24 is still attached to the purge housing 21, and the filter cover 24 is prevented from being lost. Further alternatively, the other side of the filter cover 24 can be connected to the purification housing 21, but not limited thereto, by a push-type snap switch assembly, so that the filter cover 24 can be opened and closed by pressing, which is convenient.

Optionally, the filter element 22 is provided in the purification housing 21 in a drawable manner; it will be appreciated that removal, cleaning or replacement of the filter element 22 can be more easily performed by means of a pull-out. Optionally, a guide rail 216 is provided in the purification housing 21, which extends toward the mounting opening 213, and the filter element 22 is inserted into the purification housing 21 along the guide rail 216; the guide rail 216 has a good guiding and mounting function, and can facilitate the drawing, dismounting and mounting of the filter member 22.

Referring to fig. 2-6, in one embodiment, the range hood body 1 further includes a fan guard 13 disposed within the trim cover 11, the range hood duct being at least partially defined by the fan guard 13, and the purge housing 21 being disposed on a front side of the fan guard 13. In this embodiment, the purifying housing 21 is located on the front surface of the fan cover 13, so that the purifying housing 21 is closer to the air outlet 112 on the decorative cover 11, thereby shortening the distance between the purifying housing 21 and the air outlet 112, facilitating the communication between the air outlet 212 on the purifying housing 21 and the air outlet 112, and making the wind speed of the purified wind blown from the air outlet 112 larger and the air supply farther. Optionally, purify casing 21 and can dismantle the front of connecting in fan guard 13, promptly, purify casing 21 and depend on fan guard 13 and install, compare in purifying casing 21 and depend on the technical scheme that decorate cover 11 and install, this technical scheme can reduce the probability of decorating cover 11 deformation, simultaneously, the removable mounting that purifies casing 21 can be convenient for the change of its inside device.

Optionally, the purification fan 23 is a centrifugal fan, on one hand, the centrifugal fan has a large air volume and a small noise, so that far air supply can be realized at a low noise; on the other hand, the centrifugal fan has the function of changing the wind direction (axial air inlet and radial air outlet), and is favorable for realizing air inlet at two sides and front air outlet.

Further, a centrifugal volute 214 for installing a centrifugal fan is arranged in the purification housing 21, an air outlet side of the centrifugal volute 214 faces downward and is bent forward to extend an air guide section 215, and the air guide section 215 extends to a position connected with the air outlet 112. It can be understood that the end of the wind guiding section 215 away from the centrifugal volute 214 is provided with the wind outlet 212. In this embodiment, by arranging the air guide section 215 extending in a bent manner, forward air supply can be achieved when the axial direction of the centrifugal fan is perpendicular or nearly perpendicular to the fan guard 13, and at this time, the installation space in the front-rear direction required by the centrifugal fan is small. It will be appreciated that if the radial direction of the centrifugal fan is perpendicular or nearly perpendicular to the fan guard 13, the required front-to-back installation space for the centrifugal fan is large, since the diameter of the centrifugal fan is typically larger than the axial thickness of the centrifugal fan. Optionally, the centrifugal volute 214 includes a volute body and volute cover that are joined to facilitate installation of the centrifugal fan into the centrifugal volute 214.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, which are directly or indirectly applied to the present invention, are included in the scope of the present invention.

Claims

1. A range hood, comprising:

the range hood main body comprises a decoration cover and a smoke collecting cover arranged below the decoration cover, wherein a smoke suction duct is arranged in the decoration cover; and

the air purification device comprises a purification air channel which is arranged in the decorative cover and is not communicated with the oil fume suction air channel, and a filtering piece and a purification fan which are arranged in the purification air channel;

the outer surface of the cigarette machine main body is provided with an air inlet communicated with the purification air channel and an air outlet communicated with the purification air channel;

the air purification device further comprises a purification shell arranged in the decoration cover, at least part of the purification air channel is limited by the purification shell, the purification shell is provided with an air inlet through hole communicated with the air inlet and an air outlet through hole communicated with the air outlet, the cigarette machine main body further comprises a fan cover arranged in the decoration cover, at least part of the oil-suction smoke channel is limited by the fan cover, the purification shell is arranged on the front side of the fan cover, the purification fan is a centrifugal fan, a centrifugal volute used for installing the centrifugal fan is arranged in the purification shell, the axial direction of the centrifugal fan is vertical or nearly vertical to the fan cover, the air outlet is arranged on the front side of the decoration cover and is positioned at the lower part of the decoration cover, the air outlet side of the centrifugal volute faces downwards and is bent forwards to extend to form an air guide section, the air guide section extends to a position connected with the air outlet, and one end, far away from the centrifugal volute, of the air guide section is provided with the air outlet through hole; the air purification device also comprises a wind guide blade, the wind guide blade extends along the transverse direction and is rotatably arranged at the air outlet, so that the wind guide blade can guide wind obliquely downwards and wind obliquely upwards in the rotating process;

the air inlet is formed in the side face of the decorative cover; alternatively, the first and second electrodes may be,

the air inlet is formed in the upper part of the front side of the decorative cover; alternatively, the first and second electrodes may be,

the air inlet is formed in the top of the cigarette machine main body.

2. The range hood of claim 1, wherein when the air inlet is disposed on a side of the decorative cover, two opposite sides of the decorative cover are respectively provided with one air inlet.

3. The range hood according to claim 1 or 2, wherein the decorative cover is provided with a filter mounting opening, and the filter member is detachably disposed in the purifying air duct through the filter mounting opening.

4. A range hood as claimed in claim 3 wherein said filter mounting opening is provided with a filter cover.

5. The range hood of claim 3 wherein the cleaning housing defines a mounting opening corresponding to the filter mounting opening, and the filter element is removably coupled to the cleaning housing via the filter mounting opening and the mounting opening.