CN113898988A

CN113898988A - Smoke exhaust ventilator

Info

Publication number: CN113898988A
Application number: CN202010644581.8A
Authority: CN
Inventors: 刘智; 梁泽锋; 曲绍鹤
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: 2022-01-07

Abstract

The invention discloses a range hood, comprising: the smoke machine main body comprises a fan cover and a smoke collecting hood arranged below the fan cover; and the air purification device comprises a purification shell covering the front surface of the fan cover, and a filtering piece and a purification fan which are arranged in the purification shell, wherein the purification shell is provided with an air inlet and an air outlet, and the filtering piece and the purification fan are arranged between the air inlet and the air outlet. 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 smoke machine main body comprises a fan cover and a smoke collecting hood arranged below the fan cover; and

the air purification device comprises a purification shell covering the front face of the fan cover, and a filtering piece and a purification fan which are arranged in the purification shell, wherein the purification shell is provided with an air inlet and an air outlet, and the filtering piece and the purification fan are arranged between the air inlet and the air outlet.

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 purifying shell is positioned on the front surface of the fan cover, so that the air inlet of the purifying shell is arranged relatively more forwards, and the oil smoke escaping to the breathing area of the user can be sucked into the purifying shell more favorably; on the other hand, the purifying shell covers the front surface of the fan cover, so that corner parts on the front surface of the range hood, which are easy to deposit oil smoke and dust, can be reduced, and the difficulty in using and cleaning the range hood is reduced.

Optionally, the air outlet is disposed on a top surface of the purification housing.

So, can realize the air-out upwards, the air-out upwards is favorable to blowing the air after purifying to the first half in kitchen space to through air-purifying so that the lampblack of first half in kitchen space under the promotion of the clean air that blows upwards, the downstream, to being inhaled and purifying by air purification device's air intake, thereby realize the air cycle in the kitchen and purify.

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

So, the accessible changes its air-out direction, satisfies the user to air purification device's more air-out demands.

Optionally, an adjustable inclination angle with a front opening is formed between the air outlet direction of the air outlet and the horizontal plane, the adjustable inclination angle is not less than 10 degrees and not more than 150 degrees, so that the air outlet direction of the air outlet has a large adjustment range, and the requirements of more working conditions can be met; and/or

The air outlet is provided with an air outlet grid;

the air outlet grille comprises an air guide grille strip which can be arranged in a rotating way, so that the air outlet direction of the air outlet is continuously adjustable; or, the air-out grid disposes a plurality ofly, the air-out grid sets firmly the wind-guiding grid strip, and the inclination between the wind-guiding grid strip of different air-out grids and the horizontal plane is different, and the alternative air-out grid install in the air outlet, so, when changing different air-out grids, can change the air-out direction of air outlet.

Optionally, the air inlet is arranged on the side surface of the purification shell.

Therefore, the oil smoke escaping to the side of the range hood can be sucked into the purifying shell, and the oil smoke at the side of the range hood can be reduced.

Optionally, the air inlet extends from a lower end to an upper end of the side of the purification housing.

Therefore, the air inlet can have a larger air inlet area, and the air inlet efficiency is higher.

Optionally, the air inlets are disposed on two opposite side surfaces of the purification shell.

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

Optionally, there are two filter elements, each filter element being disposed adjacent to one of the air inlets.

Therefore, the air with the oil smoke can be filtered by the filter element once entering the purifying shell, and the probability that the air with the oil smoke pollutes other devices in the purifying shell is reduced.

Optionally, the filter element is removably attached to the purification housing.

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

Optionally, the purifying shell is provided with a filter element mounting port, and the filter element is detachably mounted in the purifying shell through the filter element mounting port, and it can be understood that the filter element mounting port can be arranged at the position closest to the filter element, so that the travel of the filter element required to move in the mounting and dismounting process is shortened; alternatively, the first and second electrodes may be,

it is close to filter the piece the air intake sets up, the air intake be equipped with the air-inlet grid of connection can be dismantled to the purification shell, filter the piece and pass through the air intake is packed into the purification shell, so, directly utilize the air intake that purifies the shell to install and remove filter the piece to need not to set up the special filtration installing port that is used for installing and removing filter, can make the structure of purifying the shell more simple clean and tidy, easier processing.

According to the technical scheme, on one hand, the air purification device is arranged on the cigarette machine main body, so that most of oil smoke generated in the cooking process is discharged to the outside through the oil smoke suction air channel in the cigarette machine main body when the air purification device and the cigarette 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 channel in 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 purifying shell is positioned on the front side of the fan cover, so that the air inlet of the purifying shell is arranged relatively more forwards, and the oil smoke escaping to the breathing area of the user can be sucked into the purifying shell more favorably, so that the oil smoke at the breathing area of the user is reduced, and the damage of the oil smoke to the health of the user is further reduced; on the other hand, the purifying shell covers the front face of the fan cover, so that corner parts on the front face of the range hood, which are easy to deposit oil smoke and dust, can be reduced, the difficulty in using and cleaning the range hood is reduced, and meanwhile, the air purifying device and the range hood main body can be integrated in appearance, so that the range hood is more attractive and concise.

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 diagram of a range hood according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of the air cleaning device of the range hood in fig. 1;

fig. 3 is a schematic structural view of an air outlet grille of the air purification apparatus in fig. 2;

fig. 4 is a schematic structural view of an air guiding grid of the air outlet grid of fig. 3;

FIG. 5 is a schematic view of an air circulation path of the air cleaning device of the range hood of FIG. 1;

fig. 6 is a schematic structural diagram of another embodiment of the range hood of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Cigarette machine main body	11	Fan cover
12	Exhaust fume collecting hood	2	Air purifying device
				21	Purifying shell	21a	Air inlet
21b	Air outlet	210	Filter element mounting port
				22	Filter element	221	HEPA filter screen
222	Active carbon filter screen	23	Purifying fan
				24	Air inlet grille	25	Air outlet grille
251	Wind-guiding grid	252	Grille frame
				220	Mounting groove	220a	Mounting through opening
26	Filter cover	28	Filter element mounting box
				281	Guide rail	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 clearly and completely described below 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, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.

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 such 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 and 2, in an embodiment of the present invention, the range hood includes a range hood body 1, and an air cleaning device 2 disposed outside the range hood body 1. Wherein:

the range hood main body 1 is provided with an oil fume suction duct, the smoke inlet of the oil fume suction duct is communicated with the indoor and is usually suspended above a kitchen range so as to suck oil fume into the oil fume 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 cigarette machine body 1 is further provided with a smoke exhaust fan for making the airflow flow from the smoke inlet to the smoke outlet. It can be understood that the range hood main body 1 has the functions of the traditional range hood.

The air purifying device 2 comprises a purifying shell 21 arranged outside the cigarette machine body 1, and a filtering piece 22 and a purifying fan 23 arranged in the purifying shell 21, wherein the purifying shell 21 is provided with an air inlet 21a and an air outlet 21b, and the filtering piece 22 and the purifying fan 23 are both arranged between the air inlet 21a and the air outlet 21 b. It can be understood that a purifying air duct is formed in the purifying housing 21, and the purifying air duct and the oil smoke suction duct are independent from each other. The cleaning fan 23 is used to make the air flow from the air inlet 21a to the air outlet 21 b. The air inlet 21a and the air outlet 21b are communicated with each other indoors, the air inlet 21a is used for sucking air in a kitchen, the filter 22 is used for filtering and purifying the sucked air, and the air outlet 21b is used for discharging the filtered and purified air back to the kitchen indoors. When the air purification device 2 and the cigarette machine main body 1 work cooperatively, most of oil smoke generated in the cooking process is discharged to the outside through the oil smoke suction air duct in the cigarette machine main body 1, 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 in the air purification device 2, 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.

In the embodiment, the air purification device 2 is arranged outside the cigarette machine main body 1, so that the cigarette machine main body 1 does not need to be disassembled and assembled when parts (such as the filter 22) of the air purification device 2 are replaced or the air purification device 2 is maintained, and the convenience is achieved; in addition, the range hood main body 1 and the air purification device 2 can be assembled together after being assembled independently in modules, so that the modular assembly of the range hood is facilitated, and the assembly efficiency of the range hood can be improved.

Optionally, the purifying housing 21 is detachably mounted on the cigarette machine body 1, and may be, but is not limited to, mounted on the cigarette machine body 1 by using one or more detachable structures such as screw locking structures, snap structures, etc. to facilitate the maintenance and disassembly of the air purifying device 2.

Optionally, the range hood main body 1 and the air purification device 2 are connected to the same controller 3, that is, the range hood controls the range hood main body 1 and the air purification device 2 through the same controller 3; the controller 3 is typically provided on the cigarette maker body 1, and the cigarette maker body 1 is typically larger in volume than the air cleaning device 2, so that there is more space and location for the controller 3 to be installed. 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 range hood body 1 and the air purification device 2.

Optionally, the cigarette machine main body 1 and the air purification device 2 share one control switch 4, so that when the cigarette machine main body 1 is turned on through the control switch 4 to work, the air purification device 2 can be turned on automatically at the same time to work, that is, the cooperative work of turning on the cigarette machine main body 1 and the air purification 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. When one control switch 4 is shared, the control switch 4 is normally provided on the cigarette maker main body 1.

However, the design is not limited thereto, in other embodiments, the cigarette maker main body 1 and the air purification device 2 may also use different control switches 4, respectively, to implement independent on/off control of the cigarette maker main body 1 and the air purification device 2, so that a user may use respective functions of the cigarette maker main body 1 and the air purification device 2 more flexibly. When different control switches 4 are respectively used, the two control switches 4 can be arranged on the cigarette machine main body 1; of course, the two control switches 4 can also be correspondingly arranged on the cigarette machine main body 1 and the air cleaning device 2 respectively.

Referring to fig. 1 and 2, in one embodiment, the range hood body 1 includes a fan guard 11 and a smoke collecting hood 12 disposed below the fan guard 11, and a clean case 21 covers a front surface of the fan guard 11. 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. In this embodiment, the smoke inlet of the range hood main body 1 is disposed below the smoke collecting hood 12. The oil smoke below the smoke collecting hood 12 is mainly sucked by the smoke inlet, that is, is mainly discharged to the outside by the oil smoke suction duct. The oil smoke escaping upwards from the edge of the smoke-collecting hood 12 is mainly sucked and processed by the air inlet 21a of the purifying shell 21. In this embodiment, on one hand, the purifying housing 21 is located on the front side of the fan guard 11, so that the air inlet 21a of the purifying housing 21 is arranged relatively more forward, which is more favorable for sucking the oil smoke escaping to the breathing area of the user into the purifying housing 21, thereby reducing the oil smoke at the breathing area of the user and further reducing the damage of the oil smoke to the health of the user; on the other hand, the purifying shell 21 covers the front surface of the fan cover 11, so that corner parts on the front surface of the range hood, which are easy to deposit oil smoke and dust, can be reduced, the difficulty in using and cleaning the range hood is reduced, and meanwhile, the air purifying device 2 and the range hood main body 1 can be integrated in appearance, so that the range hood is more attractive and concise. Typically, the top surface of the purge shell 21 is flush with the top of the fan guard 11, and the two sides of the purge shell 21 are correspondingly flush with the two sides of the fan guard 11.

Generally, the cigarette maker main body 1 is provided with a control panel located on the front of the smoke collecting hood 12, and when the cigarette maker main body 1 and the air cleaning device 2 share one control switch 4, the control switch 4 is generally integrated on the control panel, that is, the control switch 4 is located on the front of the smoke collecting hood 12, which may be more convenient for a user to operate.

Referring to fig. 1, 3 and 5, in an embodiment, the air outlet 21b is disposed on a top surface of the purifying housing 21, so that after the air purifying device 2 is opened, the air purifying device 2 blows air upwards or at least has an upward air flow component. It can be understood that, due to the effect of the thermal plume in the cooking process, the oil smoke tends to gather at the upper half portion of the kitchen space, and the upward air outlet is beneficial to blowing the purified air to the upper half portion of the kitchen space, so that the oil smoke at the upper half portion of the kitchen space is pushed by the upward blowing purified air to flow downward and be sucked and purified by the air inlet 21a of the air purifying device 2, thereby realizing the air circulation purification in the kitchen, further reducing the oil smoke in the kitchen, and further reducing the pollution of the oil smoke to the air environment and the damage to the human health.

However, the design is not limited thereto, and in other embodiments, the air outlet 21b may also be disposed on the front surface of the purifying housing 21, so that after the air purifying device 2 is opened, the air purifying device 2 blows forward or at least has a forward wind component. 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, reducing the probability of the user sucking the oil smoke and reducing the damage of the oil smoke to the health of the user.

Optionally, the air outlet direction of the air outlet 21b is adjustable, so that, for the air outlet 21b arranged on the top surface of the purifying housing 21, the circulation path in the air circulation purifying process can be changed by changing the air outlet direction, so as to realize air circulation purifying in different circulation paths. It can be understood that, for the air outlet 21b disposed on the top surface of the purifying housing 21, the air outlet has an upward air outlet component no matter how the air outlet direction is adjusted.

Optionally, the air outlet 21b is provided with an air outlet grille 25 to prevent foreign matters from falling into the purifying housing 21 from the air outlet 21 b. Further alternatively, referring to fig. 3 and 4, the air outlet grille 25 includes a rotatable air guiding bar 251, so that the air outlet direction of the air outlet 21b is adjusted by rotating the air guiding bar 251, and the air outlet direction of the air outlet 21b is continuously adjustable. However, the design is not limited thereto, in other embodiments, a plurality of air outlet grills 25 fixedly provided with the air guiding grills 251 may be configured, and the air outlet grills 25 with different air outlet grills 251 and the horizontal plane have different inclination angles, and the air outlet grille 25 with the air guiding grills 251 with corresponding inclination angles is selected to be installed on the air outlet 21b according to the requirement of the air outlet direction, so that the air outlet direction of the air outlet 21b can be changed by replacing different air outlet grills 25; in addition, optionally, the air outlet grille 25 further includes a grille frame 252, the air guiding grills 251 are connected to the grille frame 252, and the grille frame 252 is usually detachably connected to the air outlet 21b and can be mounted on the air outlet 21b by using one or more detachable structures, such as screw locking structures, snap fastening structures, and the like, but not limited thereto.

For the air outlet 21b arranged on the top surface of the purifying housing 21, optionally, an adjustable inclination angle with a front opening is formed between the air outlet direction of the air outlet 21b and the horizontal plane, the adjustable inclination angle is not less than 10 degrees and not more than 150 degrees, so that the air outlet direction of the air outlet 21b has a large adjustment range, and the requirements of more working conditions can be met.

It should be noted that, for the rotatable air guiding grid 251, the air guiding grid 251 is usually rotated to a position perpendicular to the horizontal plane, that is, the adjustable inclination angle is 90 ° to wind air vertically upwards, so that the air outlet distance is increased, and the air circulation purification in the kitchen is further facilitated. Similarly, for the arrangement of a plurality of air outlet grills 25 with the air guiding grills 251 fixed thereto, the air outlet grills 25 with an inclination angle of 90 ° between the air guiding grills 251 and the horizontal plane are generally selected to be installed to the air outlet 21 b.

Referring to fig. 1 and 2, in an embodiment, the air inlet 21a is disposed on a side surface of the purifying housing 21, so that the oil smoke escaping to the side of the range hood can be sucked into the purifying housing 21, and the oil smoke at the side of the range hood can be reduced. Particularly, when a dual-burner kitchen range is used below the range hood, the oil smoke generated during cooking easily escapes from the side direction of the range hood, and the air inlet 21a located on the side surface of the purifying housing 21 is more beneficial to sucking the oil smoke. Optionally, the air inlets 21a are disposed on two opposite sides of the purifying housing 21, so as to reduce oil smoke on two sides of the range hood. Of course, the air inlet 21a may be provided only on one of the two sides of the purification casing 21. Optionally, an air inlet grille 24 is disposed on the air inlet 21a to prevent hands and other foreign objects from extending into the purifying housing 21.

However, the design is not limited thereto, in other embodiments, when the air outlet 21b is disposed on the top surface of the purifying housing 21, the air inlet 21a may also be disposed on the front surface of the purifying housing 21, so as to facilitate the oil smoke escaping to the front of the range hood to be sucked into the purifying housing 21, so as to reduce the oil smoke in front of the range hood; particularly, when the air outlet 21b is located at a lower position, the oil smoke escaping to the breathing area of the user can be sucked into the purifying housing 21, so as to reduce the oil smoke in the breathing area of the user, and further reduce the damage of the oil smoke to the health of the user. In addition, in other embodiments, the air inlets 21a may be disposed on both the front and the side of the purifying housing 21, so as to reduce the oil smoke in front and at the side of the range hood.

For the technical solution that the air inlet 21a is disposed on the side surface of the purifying housing 21, optionally, the air inlet 21a extends from the lower end to the upper end of the side surface of the purifying housing 21 (see fig. 2); therefore, the air inlet 21a can have a larger air inlet area, and the air inlet efficiency is higher. Further alternatively, the air inlet 21a covers the entire side surface of the purification casing 21 to have a larger air inlet area.

For the technical solution that the opposite two side surfaces of the purifying housing 21 are provided with the air inlets 21a, optionally, two filter elements 22 are provided, and each filter element 22 is disposed near one of the air inlets 21 a; therefore, once the air with the oil smoke enters the purifying shell 21, the air can be filtered by the filter element 22, and the probability that the air with the oil smoke pollutes other devices in the purifying shell 21 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 21b, so that the oil smoke in the air can be purified and then discharged.

In an embodiment, the purifying fan 23 is configured as a centrifugal fan (see fig. 2), on one hand, the centrifugal fan has a large air volume and low noise, so that the air purifying device 2 can realize far air supply under low noise; on the other hand, centrifugal fan has the turning characteristic of axial air inlet, side direction air-out, can make when purifying shell 21's relative both sides face all is equipped with air intake 21a, can only adopt a centrifugal fan, with two different air drive that the air intake 21a got into to same air outlet 21b, so, the structure of product is simpler.

Optionally, the circulating air volume of the purifying fan 23 is not less than 10 cubic meters per hour; it can be understood that if the circulating air volume is too small, the realization of the air circulation purification in the kitchen is not facilitated. The circulation air volume in the present embodiment means an air volume per unit time. In this embodiment, generally, the larger the area of the kitchen, the larger the circulating air volume of the purifying fan 23 needs to be, and the purifying fan 23 with a circulating air volume of 50 cubic meters/hour, 100 cubic meters/hour, 150 cubic meters/hour, 200 cubic meters/hour, 250 cubic meters/hour, or 300 cubic meters/hour may be selected according to the needs of the kitchen area. Of course, the larger the circulating air volume of the cleaning fan 23 is, the more advantageous the air circulation cleaning in the kitchen is.

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 heating decomposition or cracking product and also includes the physical and chemical reaction product of protein, polymer compound and various seasoning matters 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. 2). The HEPA filter screen 221 is mainly used for filtering particulate matters (liquid and solid) in oil smoke, and the material of the HEPA filter screen can comprise PP filter paper (polypropylene filter paper), glass fiber, PTFE filter paper (polytetrafluoroethylene filter paper), nano fiber, melt-blown polyester non-woven fabric and the like, so that the HEPA filter screen has the characteristics of large dust holding capacity and high filter precision, the filter efficiency of the oil smoke particulate matters can exceed 90%, and the HEPA filter screen can be processed into required size and shape according to the machine type requirements. The activated carbon filter screen 222 is mainly used for filtering volatile organic compounds (smell) 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.

In one embodiment, the filter element 22 is removably attached to the purifier housing 21, thereby facilitating removal, cleaning or replacement of the filter element 22. 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.

Alternatively, referring to fig. 1 and 2, the purification housing 21 is provided with a filter mounting port 210, and the filter member 22 is detachably mounted into the purification housing 21 through the filter mounting port 210. In this embodiment, the filter mounting opening 210 and the air inlet 21a are not the same opening, and the filter mounting opening 210 and the air outlet 21b are not the same opening, but are specially provided with openings for mounting and dismounting the filter element 22, so that it can be disposed at the position closest to the filter element 22, thereby shortening the travel of the filter element 22 required to move during mounting and dismounting.

As for the filter member 22 including both the HEPA filter 221 and the activated carbon filter 222, optionally, the HEPA filter 221 and the activated carbon filter 222 thereof are generally produced as one module so as to be modularly assembled to the purification housing 21 at a time, reducing the assembly process and improving the assembly efficiency.

Optionally, the filter element 22 is drawably disposed in the filter element mounting opening 210; it will be appreciated that removal cleaning or replacement of the filter element 22 can be more easily performed by means of pulling.

Optionally, the air purifying device 2 further comprises a filter mounting box 28 disposed in the purifying housing 21, the filter mounting box 28 is provided with a mounting opening 220a corresponding to the filter mounting opening 210, a mounting groove 220 extending toward the mounting opening 220a is disposed in the filter mounting box 28, and the filter 22 is mounted in the mounting groove 220 through the mounting opening 210 and the mounting opening 220a of the filter 22 in sequence; it will be appreciated that the mounting slot 220 extends toward the mounting aperture 220a to provide a guided mounting that facilitates the extraction of the filter element 22 relative to the filter element mounting aperture 210. Of course, the side wall of the filter mounting box 28 opposite the filter element 22 is hollow or otherwise free to allow air flow through the filter element 22. Alternatively, the bottom wall and the top wall of the filter mounting box 28 are each convexly provided with two parallel guide rails 281 extending toward the mounting opening 220a, and the mounting groove 220 is formed between the two guide rails 281.

Optionally, a filter cover 26 is disposed on the filter mounting opening 210; so, will strain a piece 22 certainly strain a piece installing port 210 and pack into the purification shell 21 after, will strain a piece lid 26 lid and close and strain a piece installing port 210, can avoid filtering a piece 22 and shake out, improve the structural stability of product, can also avoid foreign matter etc. to get into in the purification shell 21 from straining a piece installing port 210 simultaneously.

In one embodiment, the filter cover 26 is rotatably coupled to the filter mounting opening 210 on a first side and removably coupled to the filter mounting opening 210 on a second side; in this manner, after opening the filter cover 26, the filter cover 26 remains attached to the filter mounting opening 210, preventing the filter cover 26 from being lost. However, the design is not limited thereto, and in other embodiments, the filter cover 26 can be integrally and detachably connected to the filter mounting opening 210.

With respect to the embodiment wherein the first side of the filter cover 26 is rotatably connected to the filter mounting opening 210, optionally, the second side of the filter cover 26 is connected to the filter mounting opening 210 by a push-button type snap-on switch assembly, thereby facilitating the opening of the filter cover 26. The pressing type snap switch assembly generally includes a self-locking switch disposed at the filter mounting opening 210, and a snap portion disposed at the filter cover 26 and engaged with the self-locking switch. When the filter cover 26 is in an open state, rotating the filter cover 26 to a position where the second side is close to the filter mounting port 210, then pressing the filter cover 26 until the buckling part enters the self-locking switch, so that the self-locking switch locks the buckling part, and the filter cover 26 and the purification shell 21 can be fixed; then, when the filter cover 26 is pressed again, the latching portion is released by the self-locking switch, so that the filter cover 26 can be rotated and opened relative to the filter mounting opening 210. However, the design is not limited thereto, and in other embodiments, the second side of the filter cover 26 can be detachably connected to the filter mounting opening 210 by, but not limited to, a screw locking structure, a wrench structure, etc.

In the above embodiment, the purifying housing 21 is provided with the filter mounting opening 210 for mounting and dismounting the filter 22. However, the design is not limited thereto, in the technical solution that the filter element 22 is disposed near the air inlet 21a, optionally, referring to fig. 6, the air inlet 21a is provided with an air inlet grille 24 detachably connected with the purification housing 21, and after the air inlet grille 24 is detached, the filter element 22 enters and exits the purification housing 21 through the air inlet 21 a; it can be understood that in the embodiment, the air inlet 21a of the purifying housing 21 is directly utilized to assemble and disassemble the filtering element 22, so that a filtering installation port specially used for assembling and disassembling the filtering element 22 is not required to be arranged, and the structure of the purifying housing 21 is simpler and tidier and is easier to process.

Alternatively, the air inlet grille 24 is connected to the air inlet 21a by a push-button type snap switch assembly (not shown), that is, the air inlet grille 24 can be detached from the purifying housing 21 and the filter member 22 can be detached by simply pressing the air inlet grille 24 in the assembled state of the air inlet grille 24; after the cleaned or new filter element 22 is installed in the purification shell 21 again, the air inlet grille 24 can be lifted to the position where the air inlet 21a is in butt joint with the air inlet grille 24, and then the air inlet grille 24 and the purification shell 21 can be fixed by pressing the air inlet grille 24, so that the whole assembling and disassembling process is convenient.

Further alternatively, the upper end and the lower end of the air inlet grille 24 are connected to the air inlet 21a through at least one pressing type snap switch assembly, so that the air inlet grille 24 and the air inlet 21a can be stably and reliably connected.

Experimental data relating to one embodiment is provided below:

in this embodiment, the air outlet 21b of the air purification device 2 of the range hood is disposed on the top surface of the purification casing 21, the air inlet 21a is disposed on the side surface of the purification casing 21, and the purification casing 21 covers the front surface of the fan housing 11; and introduce a traditional range hood that only has the function of smoking and discharging fume and compare, certainly, carry out the experiment to same kitchen space. The relevant experimental data are as follows:

when the oil smoke concentration reduction rate of the kitchen space is calculated, the oil smoke in the kitchen space except the interior of the range hood and the cooking area is calculated; the oil smoke smell concentration test point of the breathing zone is the middle position of the double cooking benches in front of the range hood with the height of 1.45-1.50 m away from the ground.

As is evident from the data in the table above:

1. when the range hood provided by the invention is started (certainly, both the range hood main body 1 and the air purification device 2 are started), compared with the starting of the transmission range hood, the oil smoke smell concentration in a respiratory area and the oil smoke smell concentration in a kitchen space are both greatly reduced, so that the air quality in the respiratory area of a user and the whole kitchen space can be obviously improved.

2. For the range hood of the invention, the larger the circulating air volume of the purifying fan 23 of the air purifying device 2 is, the more favorable the improvement of the air quality of the whole space of the user breathing area and the kitchen.

3. For the range hood disclosed by the invention, the air outlet in the vertical upward direction is more favorable for improving the air quality of the whole space of a user breathing area and a kitchen compared with the air outlet in the inclined forward direction.

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 modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A range hood, comprising:

2. The range hood of claim 1 wherein the air outlet is disposed on a top surface of the clean-up housing.

3. The range hood of claim 2, wherein the outlet direction of the outlet is adjustable.

4. The range hood according to claim 3, wherein an adjustable inclination angle with a front opening is formed between the air outlet direction of the air outlet and a horizontal plane, and the adjustable inclination angle is not less than 10 degrees and not more than 150 degrees; and/or the presence of a catalyst in the reaction mixture,

the air outlet is provided with an air outlet grid;

the air outlet grille comprises air guide grille strips which are arranged in a rotatable mode; alternatively, the first and second electrodes may be,

the air outlet grille is provided with a plurality of air outlet grilles, the air outlet grille is fixedly provided with air guide grilles, the air guide grilles of different air outlet grilles have different inclination angles with the horizontal plane, and the air outlet grille is selected to be installed at the air outlet.

5. The range hood of claim 1 wherein the air inlet is disposed in a side of the clean-up enclosure.

6. The range hood of claim 5 wherein the air inlet extends from a lower end to an upper end of the side of the clean housing.

7. The range hood of claim 5, wherein the air inlets are disposed on two opposite sides of the purification housing.

8. The range hood of claim 7 wherein there are two of said filter members, each of said filter members being disposed adjacent one of said air intakes.

9. The range hood of any one of claims 1-8 wherein the filter element is removably attached to the purifier housing.

10. The range hood of claim 9 wherein the purification housing defines a filter mounting opening through which the filter element is removably mounted within the purification housing; alternatively, the first and second electrodes may be,

it is close to filter the piece the air intake sets up, the air intake be equipped with purify the shell and can dismantle the air-inlet grille of connection, filter the piece and pass through the air intake is packed into purify the shell.