CN113898991A

CN113898991A - Smoke exhaust ventilator

Info

Publication number: CN113898991A
Application number: CN202010644584.1A
Authority: CN
Inventors: 刘智; 梁泽锋; 曲绍鹤; 李忠华
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: a cigarette machine main body; and air purification device, including establishing separately two of the relative both sides of cigarette machine main part purify the module, purify the module including establishing cigarette machine main part outer purification shell and establishing filter piece and purification fan in the purification shell, purification shell is equipped with air intake and air outlet, filter the piece with purification fan all locates the air intake with between 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:

a cigarette machine main body; and

air purification device is established including dividing two of the relative both sides of cigarette machine main part purify the module, it includes establishing to purify the module cigarette machine main part outer purification shell and establishing filter piece and purification fan in the purification shell, purification shell is equipped with air intake and air outlet, filter the piece with purification fan all locates the air intake with between 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, two purification modules of the air purification device are respectively arranged on two opposite sides of the range hood body, so that when double-burner cookers are used below the range hood, the two purification modules can be correspondingly positioned above the two burners one by one, and the purification modules on the corresponding sides can better purify escaping oil smoke generated when the corresponding burners are used for cooking, so that the air quality is improved to a greater extent.

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

So, after purification module opens, it can be air-out forward or have forward air-out component at least, and the air-out is favorable to carrying the air after purifying to user's breathing zone forward to be favorable to improving the air quality in user's breathing zone, reduce the probability that the user inhales the oil smoke, reduce the harm that the oil smoke is healthy to the user.

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 lower opening is formed between the air outlet direction of the air outlet and the vertical surface, and the adjustable inclination angle is not less than 30 degrees and is not more than 150 degrees.

So, the air-out direction of air outlet has great adjustment range, can satisfy the demand of more operating modes.

Optionally, the air outlet is provided with an air outlet grille;

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 grid is provided with a plurality of air outlet grids, the air outlet grids are fixedly provided with air guide grid bars, the air guide grid bars of different air outlet grids are different from the inclination angle between the vertical surface, and one air outlet grid is selected to be installed at the air outlet.

The air outlet direction of the air outlet can be continuously adjusted by arranging the rotatable air guide grid bars; and through the configuration of a plurality of air outlet grids with different inclination angle air guide grid bars, the air outlet direction of the air outlet can be changed when different air outlet grids are replaced.

Optionally, the air inlet is disposed on a top surface of the purification shell.

Therefore, the oil smoke escaping to the upper part of the purification module is favorably sucked and purified.

Optionally, for any of the purification modules, the side of the purification housing facing away from the other purification module is provided with the air inlet.

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 range hood main body comprises a fan cover and a smoke collecting cover arranged below the fan cover, and the two purification modules are respectively arranged on two opposite sides of the fan cover and are arranged above the smoke collecting cover.

The purification module positioned on the left side of the fan cover can better purify the oil smoke escaping upwards from the left side of the smoke collecting cover, and the purification module positioned on the right side of the fan cover can better purify the oil smoke escaping upwards from the right side of the smoke collecting cover.

Optionally, the filter element includes a HEPA filter and an activated carbon filter, and in the air flow direction, the HEPA filter is located upstream of the activated carbon filter.

The HEPA filter screen is mainly used for filtering particulate matters (liquid and solid) in the oil smoke, and the active carbon filter screen is mainly used for filtering volatile organic compounds (smell) in the oil smoke; locate the HEPA filter screen at the active carbon filter screen upper reaches, can avoid the particulate matter in the oil smoke to attach to on the active carbon filter screen to the life of extension active carbon filter screen.

Optionally, the circulating air volume of the purification fan is greater than or equal to 10 cubic meters per hour.

The circulating air quantity is large, and the realization of air circulating purification in a kitchen is facilitated.

Optionally, purify the shell and include the wind channel shell, the wind channel shell is including being used for supplying filter the filter shell portion of installing and be used for supplying purify the fan shell portion of fan installation, filter the shell portion and have relative first side and second side, the first side of filtering the shell portion is equipped with the air intake, the fan shell portion connect in filter the second side of shell portion, the air outlet is located the fan shell portion.

The filtering element shell is beneficial to guiding airflow to the filtering element, and the airflow purification efficiency is improved; and to the fan shell, when purifying the fan and adopting centrifugal fan, the shape of centrifugal spiral case can be made to the fan shell to make the compact structure of purification module, be favorable to purifying the miniaturization of module volume.

Optionally, purify the shell and still include the protective housing, the protective housing splice in filter the second side of piece shell, and shroud the fan shell, just correspond on the protective housing the air outlet is equipped with and dodges the mouth.

So, on the one hand the protective housing can give the fan shell in case collision protection to reduce the collision probability in each bight of fan shell, on the other hand with strain a shell concatenation after, can make the whole surface of purifying the shell more regular, thereby reduce the corner structure of easily depositing the dust, improve the installation stability between purifying shell and the cigarette machine main part simultaneously.

Optionally, the range hood further comprises a control switch, and the range hood main body and the two purification modules share one control switch; or the cigarette machine main body uses one control switch, and the two purification modules share the other control switch; or, the cigarette machine main body uses one control switch, one purification module uses the other control switch, and the other purification module uses the other control switch.

The control switch is shared, and the cooperative work of starting the cigarette machine main body and the air purification device by one key can be realized; the cigarette machine main body and the air purification device (two purification modules) respectively use different control switches, so that a user can more flexibly use the respective functions of the cigarette machine main body and the air purification device; the cigarette machine main body, the purification module and the other purification module respectively use different control switches, so that the cigarette machine main body and the two purification modules can be controlled to be started and stopped independently, and the control is more flexible.

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 is through establishing two purification module branch of air purification device in the relative both sides of cigarette machine main part, so, when using two furnace end cooking utensils to the range hood below, can make two purification module one-to-ones be located two furnace end tops, can understand, left purification module more is favorable to purifying the produced oil smoke that escapes that uses left furnace end to cook, the purification module on right side then more is favorable to purifying the produced oil smoke that escapes that produces when using right side furnace end to cook to improve the air quality in the kitchen to a great extent.

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 a schematic top view of the range hood of FIG. 1;

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

fig. 4 is a schematic structural view of an air outlet grille of the purification module in fig. 3;

fig. 5 is a schematic structural view of an air guiding grid of the air outlet grid of fig. 4;

FIG. 6 is a schematic view of an air circulation path of a purification module of the range hood of FIG. 1;

FIG. 7 is a schematic structural diagram of a range hood according to another embodiment of the present invention;

FIG. 8 is a schematic view of the air circulation path of the purification module of the range hood of FIG. 7;

FIG. 9 is a schematic structural diagram of a range hood according to yet another embodiment of the present invention;

fig. 10 is a schematic view of an air circulation path of a purification module of the range hood of fig. 9.

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
				20	Purification module	21	Purifying shell
21a	Air inlet		21b					Air outlet
				211	Air duct shell	211a	Filter element shell
211b	Blower casing		212					Protective shell
				212a	Dodging 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

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 21 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.

Referring also to fig. 3, the air purifying device 21 includes two purifying modules 20 respectively disposed at two opposite sides of the cigarette maker body 1, each purifying module 20 includes a purifying housing 21 disposed outside the cigarette maker body 1, and a filter 22 and a purifying fan 23 disposed inside the purifying housing 21, wherein the purifying housing 21 is provided with an air inlet 21a and an air outlet 21b, and the filter 22 and the purifying fan 23 are both disposed between the air inlet 21a and the air outlet 21 b. It can be appreciated that for the two purification modules 20: a purification air channel is formed in each purification shell 21, and the purification air channel and the oil smoke suction air channel are mutually independent; the purifying fan 23 is used for making the airflow 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 21 and the range hood main body 1 work cooperatively, most of the oil smoke generated in the cooking process is discharged to the outside through the oil smoke suction air duct in the range hood main body 1, a small part of the oil smoke can escape to other spaces in a kitchen, and the small part of the oil smoke can be further removed through the purification air duct in the air purification device 21, 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 one hand, the air purification device 21 is arranged outside the range hood main body 1, so that the range hood main body 1 does not need to be disassembled and assembled when parts (such as the filter piece 22) of the air purification device 21 are replaced or the air purification device 21 is maintained, and the range hood main body 1 and the air purification device 21 can be assembled together after being independently assembled respectively, so that the range hood is favorable for modular assembly of a range hood and the assembly efficiency of the range hood can be improved; on the other hand is through establishing two purification module 20 with air purification device 21 in the relative both sides of cigarette machine main part 1 separately, so, when using two furnace end cooking utensils to range hood below, can make two purification module 20 be located two furnace end tops one-to-one, can understand, left purification module 20 more is favorable to purifying the produced oil smoke that escapes when using left furnace end to cook, purification module 20 on right side then more is favorable to purifying the produced oil smoke that escapes when using right side furnace end to cook, thereby improve the air quality in the kitchen to a greater extent.

Optionally, the range hood main body 1 and the air purification device 21 are connected to the same controller, that is, the range hood controls the range hood main body 1 and the air purification device 21 through the same controller; the controller 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 21, so that there is more space and location for the controller to be installed. However, the design is not limited thereto, in other embodiments, the range hood may also be provided with two different controllers to respectively control the range hood main body 1 and the air purification device 21, and at this time, the controller controlling the air purification device 21 may simultaneously control the two purification modules 20. In other embodiments, the range hood may also be provided with three different controllers to control the range hood body 1, one purification module 20 and another purification module 20 respectively.

Optionally, the cigarette maker main body 1 and the air cleaning device 21 share one control switch, so that when the cigarette maker main body 1 is turned on through the control switch to work, the two cleaning modules 20 of the air cleaning device 21 are automatically turned on at the same time to work, that is, the cooperative work of turning on the cigarette maker main body 1 and the air cleaning device 21 by one key can be realized. The control switch is usually electrically connected to the controller to control the on/off of the engine. When one control switch is shared, the control switch is usually arranged on the cigarette machine main body 1.

However, the design is not limited thereto, in other embodiments, the cigarette machine main body 1 uses one control switch, and the two purification modules 20 of the air purification device 21 share another control switch, so as to implement independent on-off control of the cigarette machine main body 1 and the air purification device 21, so that a user can use respective functions of the cigarette machine main body 1 and the air purification device 21 more flexibly; at this time, the two control switches can be both arranged on the cigarette machine main body 1; of course, the two control switches may also be correspondingly arranged on any one of the smoke machine main body 1 and the air purification module 20 of the air purification device 21. In yet other embodiments, the following may be provided: the cigarette machine main body 1 uses one control switch, one purification module 20 uses the other control switch, and the other purification module 20 uses the other control switch, so that the two purification modules 20 can be independently controlled to be started and stopped, and the control is more flexible; at this time, the three control switches can be all arranged on the cigarette machine main body 1; of course, the three control switches may also be correspondingly disposed on the two purification modules 20 of the cigarette maker main body 1 and the air purification device 21, respectively.

Referring to fig. 1 and 6, in an embodiment, the air outlet 21b is disposed on a front surface of the purification housing 21, so that after the purification module 20 is opened, it blows air forward or at least has a forward air-out 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, reducing the probability of the user sucking the oil smoke and reducing the damage of the oil smoke to the health of the user.

However, the design is not limited thereto, in other embodiments, referring to fig. 9 and 10, the air outlet 21b may also be disposed on the top surface of the purification housing 21, so that after the purification module 20 is opened, it will wind upwards or at least have an upward wind 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 purification module 20, 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.

Optionally, the air outlet direction of the air outlet 21b is adjustable, so that, for the air outlet 21b arranged on the front surface of the purifying housing 21, the air outlet direction can be changed to meet more air outlet requirements of the user on the air purifying device 21, for example, the requirements of users with different heights for direct blowing or non-direct blowing are met.

Optionally, the air outlet 21b is provided with an air outlet grille 25 (see fig. 1 and 3) to prevent foreign matters from protruding into the purifying housing 21 from the air outlet 21 b. Further optionally, 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 inclination angles between the air guiding grills 251 and the vertical surface of different air outlet grills 25 are different, and the air outlet grille 25 having the air guiding grills 251 with the 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 front surface of the purifying housing 21, optionally, an adjustable inclination angle with a downward opening is formed between the air outlet direction of the air outlet 21b and the vertical surface, the adjustable inclination angle is not less than 30 degrees and is not more than 150 degrees, so that the air outlet direction of the air outlet 21b has a large adjusting range, and the requirements of more working conditions can be met. It should be noted that, when the adjustable inclination angle is smaller than 90 °, the air outlet 21b is inclined downward to discharge air, which is beneficial to improving the air quality in the breathing zone of the user. When the adjustable inclination angle is greater than 90 °, the air outlet 21b is inclined upward to discharge air, so that the air outlet 21b has an upward air discharge component, and the upward air discharge component can push the oil smoke in the upper half part of the kitchen space to flow downward, and the oil smoke is sucked and purified by the air inlet 21a of the air purification device 21, so that the oil smoke in the upper half part of the kitchen space is brought into the air circulation purification, and the oil smoke in the kitchen can be further reduced.

Referring to fig. 2 and 6, in an embodiment, the air inlet 21a is disposed on the top surface of the purifying housing 21; thus, the oil smoke escaping to the upper part of the purification module 20 is favorably sucked and purified. It can be understood that the oil smoke tends to escape upwards due to the action of the thermal plume during the cooking process, so that more oil smoke is gathered above the purification module 20, and the air inlet 21a is arranged on the top surface of the purification shell 21, so that the oil smoke can be conveniently sucked.

However, the design is not limited thereto, in other embodiments, referring to fig. 7 and 8, for any one purification module 20, the side of the purification housing 21 away from the other purification module 20 is provided with the air inlet 21a, that is, the air inlet 21a can also be provided on the side of the purification housing 21, so as to facilitate the oil smoke escaping to the side of the range hood to be sucked into the purification housing 21, so as to reduce the oil smoke at the side of the range hood. In other embodiments, for any one of the purification modules 20, the air inlet 21a may be disposed on the front surface of the purification housing 21 and the side surface of the purification module 20 away from the other purification module, so as to reduce the oil smoke in front of and on the side of the range hood.

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 two purification modules 20 are disposed on opposite sides of the fan guard 11 and both disposed above the smoke collecting hood 12. 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 purification module 20. Two purification module 20 branch locate fan guard 11's relative both sides, can understand, be located the left purification module 20 of fan guard 11 and can purify the oil smoke that upwards escapes from collection petticoat pipe 12 left side better, the purification module 20 that is located fan guard 11 right side can purify the oil smoke that upwards escapes from collection petticoat pipe 12 right side better, thus, when two purification module 20 can open alone separately, when only using left furnace end to cook, can only open left purification module 20 and purify, and when only using right furnace end to cook, then can only open the purification module 20 on right side and purify, thereby realize satisfying the purification demand in a flexible way, can also reduce range hood's energy consumption.

Generally, the range hood main body 1 is provided with a control panel located on the front of the smoke collecting hood 12, and when the range hood main body 1 and the two purification modules 20 share one control switch, the control switch is generally integrated on the control panel, that is, the control switch is located on the front of the smoke collecting hood 12, and the position can be more convenient for a user to operate.

Optionally, the purification module 20 is provided at the lower part of the fan guard 11; it can be understood that the lower part of the fan cover 11 is closer to the breathing zone of the user, which is more beneficial to sucking and purifying the oil smoke escaping to the breathing zone of the user and can be more beneficial to improving the air quality of the breathing zone of the user. However, the design is not limited to this, in some other embodiments, the purification module 20 may also be disposed on the upper portion of the fan cover 11, so that the position of the purification module 20 is higher, and the position of the air outlet 21b is higher, so that the purified air blown out from the air outlet 21b can be blown to a higher space in the kitchen, and therefore, the oil smoke close to the ceiling of the kitchen can be pushed by the purified air to flow downward, and the range of air circulation purification in the kitchen is wider, and the purification is more thorough. In other embodiments, the purification module 20 can be disposed in the middle of the fan guard 11, so as to improve the air quality in the user's breathing zone and to increase the range of air circulation purification in the kitchen to some extent.

Optionally, the purification module 20 is removably mounted to the cigarette machine body 1 and may be, but is not limited to, mounted to the cigarette machine body 1 using one or more of a screw locking arrangement, a snap-fit arrangement, or other removable arrangement to facilitate maintenance removal of the purification module 20. Further optionally, the lower portion, the middle portion and the upper portion of the fan guard 11 are respectively provided with a detachable mounting position for selectively mounting the purifying module 20, so that a user can conveniently change the upper and lower positions of the purifying module 20 according to different air purifying requirements.

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. 3). 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 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. Optionally, the purification fan 23 is configured as a centrifugal fan, which has a large air volume and a low noise, so that the purification module 20 can realize far air supply at a low noise.

Referring to fig. 3, in one embodiment, for each purification module 20, the purification housing 21 includes an air duct housing 211, the air duct housing 211 including a filter housing 211a for mounting the filter 22 and a fan housing 211b for mounting the purification fan 23; the filter shell 211a has a first side and a second side opposite to each other, the first side of the filter shell 211a is provided with the air inlet 21a, the fan shell 211b is connected to the second side of the filter shell 211a, and the air outlet 21b is provided in the fan shell 211 b. The filter element shell 211a is beneficial for guiding the airflow to the filter element 22, and the purification efficiency of the airflow is improved; and for the blower housing part 211b, when the centrifugal blower is adopted as the cleaning blower 23, the blower housing part 211b can be made into the shape of a centrifugal volute, so that the structure of the cleaning module 20 is compact, and the miniaturization of the volume of the cleaning module 20 is facilitated. It should be noted that, for the purification module 20 in which the air inlet 21a is disposed on the top surface of the purification housing 21, the first side and the second side of the filter element housing 211a are the top surface and the bottom surface of the filter element housing 211a, respectively; and for the purification module 20 in which the air inlet 21a is provided at the side of the purification casing 21, the first side and the second side of the filter housing portion 211a are the left side and the right side of the filter housing portion 211a, respectively.

Optionally, the purifying housing 21 further comprises a protective housing 212, the protective housing 212 is spliced to the second side of the filter member housing 211a and covers the fan housing 211b, so that on one hand, the protective housing 212 can protect the fan housing 211b from collision to reduce the probability of collision of each corner of the fan housing 211b, and on the other hand, after being spliced with the filter member housing 211a, the whole outer surface of the purifying housing 21 can be more regular, thereby reducing the corner structures prone to dust deposition and improving the installation stability between the purifying housing 21 and the cigarette machine body 1. Without loss of generality, an avoidance port 212a is formed in the protective shell 212 corresponding to the air outlet 21 b.

In an embodiment, optionally, the air inlet 21a is an opening formed on a first side of the filter element housing 211a, and the air inlet 21a is detachably provided with an air inlet grille 24, so that the filter element 22 can be easily detached and assembled after the air inlet grille 24 is detached, thereby facilitating the removal, cleaning or replacement of the filter element 22.

However, the design is not limited thereto, and in other embodiments, the filter housing portion 211a may be provided with a filter mounting opening through which the filter 22 is detachably mounted into the filter housing portion 211 a. Optionally, the filter element 22 is drawably disposed at the filter element mounting opening; it will be appreciated that removal cleaning or replacement of the filter element 22 can be more easily performed by means of pulling. Further optionally, a filter cover is arranged on the filter mounting opening; so, will filter piece 22 certainly filter a mounting hole and pack into and strain a shell portion 211a after, will strain a lid and close and strain a mounting hole, can avoid filtering piece 22 and shake out, improve the structural stability of product, can also avoid foreign matter etc. to get into from straining a mounting hole simultaneously and strain in a shell portion 211 a.

Relevant experimental data for two specific examples are provided below:

in the first embodiment, the air outlet 21b of the purification module 20 of the range hood is arranged on the front surface of the purification casing 21, the air inlet 21a is arranged on the top surface of the purification casing 21, and the purification module 20 is installed at the lower part 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. Relevant experimental data are shown in table 1:

TABLE 1 Experimental data relating to the air outlets 21b and the front inlets 21a and the top of the purification module 20

In the second embodiment, the air outlet 21b of the purification module 20 of the range hood is arranged on the front surface of the purification casing 21, the air inlet 21a is arranged on the side surface of the purification casing 21, and the purification module 20 is installed at the lower part 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 shown in table 2:

TABLE 2 Experimental data relating to the air outlets 21b and the front inlets 21a and the side inlets of the cleaning module 20

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 of the invention is started (certainly, both the range hood main body 1 and the two purification modules 20 are started), compared with the starting of the transmission range hood, the oil smoke smell concentration in the respiratory area and the oil smoke smell concentration in the 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 21 is, the more favorable the improvement of the air quality of the whole space of the user breathing area and the kitchen.

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:

a cigarette machine main body; and

2. The range hood of claim 1 wherein the air outlet is disposed on a front 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 downward opening is formed between the air outlet direction of the air outlet and a vertical surface, and the adjustable inclination angle is not less than 30 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;

5. The range hood of claim 2 wherein the air intake is disposed in a top surface of the clean-up enclosure; alternatively, the first and second electrodes may be,

for any one of the purification modules, the side of the purification shell, which faces away from the other purification module, is provided with the air inlet.

6. The range hood according to claim 1, wherein the range hood body comprises a fan hood and a smoke collecting hood disposed below the fan hood, and the two purification modules are disposed on opposite sides of the fan hood and above the smoke collecting hood.

7. The range hood of claim 1, wherein the filter member comprises a HEPA filter and an activated carbon filter, and the HEPA filter is located upstream of the activated carbon filter in an air flow direction; and/or the presence of a catalyst in the reaction mixture,

and the circulating air volume of the purification fan is more than or equal to 10 cubic meters per hour.

8. The range hood of claim 1 wherein the purification housing comprises an air duct housing, the air duct housing comprising a filter housing for mounting the filter element and a fan housing for mounting the purification fan, the filter housing having opposite first and second sides, the first side of the filter housing having the air inlet, the fan housing coupled to the second side of the filter housing, the air outlet being disposed in the fan housing.

9. The range hood of claim 8, wherein the purification housing further comprises a protective shell, the protective shell is spliced on the second side of the filter shell and covers the fan shell, and an avoidance port is formed in the protective shell and corresponds to the air outlet.

10. The range hood according to any one of claims 1 to 9, further comprising a control switch, wherein the range hood main body and the two purification modules share one control switch; or the cigarette machine main body uses one control switch, and the two purification modules share the other control switch; or, the cigarette machine main body uses one control switch, one purification module uses the other control switch, and the other purification module uses the other control switch.