CN214501378U - Smoke exhaust ventilator - Google Patents

Abstract

The utility model discloses a range hood, this range hood includes: a cigarette machine main body; the air purification device is arranged on the cigarette machine main body and comprises a purification shell and a filter assembly, the purification shell is provided with an air inlet, an air outlet and a purification air channel communicated with the air inlet and the air outlet, and the filter assembly is arranged at the air inlet; the filter assembly includes a photolysis module for degrading volatile gases. The utility model discloses technical scheme aims at degrading the volatile gaseous in the kitchen environment to promote the air cleanliness factor in the kitchen environment.

Description

Smoke exhaust ventilator

Technical Field

The utility model relates to a kitchen appliance field, in particular to range hood.

Background

In the culinary art in-process, range hood can arrange outdoor fast with the waste gas of kitchen range burning and the oil smoke that the culinary art in-process produced, has reduced air circumstance pollution in the kitchen, however, present range hood can't thoroughly solve waste gas, oil smoke and peculiar smell scheduling problem totally, often has a large amount of oil smoke granules not to be siphoned away by the range hood and stops in air circumstance. Volatile gas in the escaping oil smoke can cause damage to the respiratory tract of a human body and affect the health of the human body.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a range hood aims at degrading the volatile gas in the kitchen environment to promote the air cleanliness factor in the kitchen environment.

In order to achieve the above object, the utility model provides a range hood, include:

a cigarette machine main body; and

the air purification device is arranged on the cigarette machine main body and comprises a purification shell and a filter assembly, the purification shell is provided with an air inlet, an air outlet and a purification air channel communicated with the air inlet and the air outlet, and the filter assembly is arranged at the air inlet;

the filter assembly includes a photolysis module for degrading volatile gases.

Air purification device is arranged in getting rid of the escape oil smoke in the kitchen to the air cleanliness factor among the kitchen environment, thereby avoid the oil smoke to air circumstance's pollution and the harm to human health effectively, the photodissociation module wherein can produce the material of strong oxidizing property, and the volatile gas in the degradable kitchen environment can further promote the air cleanliness factor among the kitchen environment.

Optionally, the photolysis module includes a carrier, a photocatalytic material and an excitation light source, the photocatalytic material is attached to the carrier, and a light emitting direction of the excitation light source faces the photocatalytic material to excite the photocatalytic material.

Therefore, under the irradiation of the excitation light source, the photocatalytic material fixed on the carrier can generate substances with strong oxidizing property so as to promote the decomposition of volatile gas, thereby improving the cleanliness of kitchen air.

Optionally, the filter assembly further comprises a filter box, the filter box is provided with a filter inlet, a filter outlet and a filter cavity communicating the filter inlet and the filter outlet, the filter inlet is communicated with the chamber, and the filter outlet is communicated with the air inlet; the filter component also comprises a filter element for adsorbing oil smoke particles, and the filter element and the carrier are both arranged in the filter cavity.

So, under the cooperation of filter core and photodissociation module, harmful component in the kitchen air of thorough filtration purification to promote the air cleanliness factor in the kitchen.

Optionally, the carrier is provided on a side of the filter element remote from the filter inlet.

Therefore, the surface of the carrier is not covered with the oil smoke particles, so that the photolysis module can effectively purify volatile gas in escaping oil smoke.

Optionally, the photocatalytic material is attached to a side of the support facing away from the filter element.

Therefore, the photocatalytic material can be conveniently exposed to excitation light emitted by the excitation light source, so that the photolysis module can be ensured to effectively degrade the volatile gas.

Optionally, the filter cartridge further includes an air frame disposed at the filtering outlet, and the excitation light source is disposed on the air frame.

Therefore, the emitted sterilizing light can just face the surface of the carrier, so that the photocatalytic material on the surface of the carrier can receive stronger irradiation to increase the strong oxidizing substances generated on the surface of the carrier, and the efficiency of degrading volatile gas by the photolysis module is improved.

Optionally, the photolysis module includes a plurality of excitation light sources, and the excitation light sources are distributed at intervals in the longitudinal direction of the wind-passing frame.

Therefore, the excitation light rays of the excitation light sources can cover the surface of the carrier, so that the photocatalytic material on the surface of the carrier is fully activated, and more strong oxidizing substances can be generated.

Optionally, the support is a reticulated porous structure.

Therefore, more photocatalytic materials can be attached to the carrier to generate more strong oxidizing substances, so that the efficiency of the photolysis module for degrading the volatile gas is improved.

Optionally, the carrier comprises a metal foam or a honeycomb ceramic or a ceramic foam.

The material is of a porous structure, has good adhesiveness, is good in acid and alkali resistance and high-temperature resistance, is suitable for serving as a carrier of a photocatalytic material, and can effectively improve the contact area of the photocatalytic material and volatile gas, so that the degradation efficiency of the photolysis module on the volatile gas is improved.

Optionally, the photocatalytic material includes a modifying dopant and/or an electron conductivity enhancer and/or an adsorbent, each of which can be used to enhance the photocatalytic activity of the photocatalytic material.

Therefore, the photocatalytic material can be excited by the laser light source more easily, the spectral response range can be expanded while the activity is improved, and the utilization rate of excitation light rays emitted by the excitation light source is improved.

Optionally, the excitation light source comprises an LED lamp and/or a discharge lamp.

Both are suitable for being used as excitation light sources to excite the photocatalytic material, and technicians can use one of the materials alone or the two materials in combination to be used as the excitation light source.

Optionally, the excitation light source comprises a first excitation light source having a wavelength in a range of 360nm to 390 nm.

Under the light irradiation of this wave band, photocatalytic material's photocatalytic activity is stronger, and photocatalytic material can produce more strong oxidizing substance to promote the degradation efficiency of photolysis module to volatile gas.

Optionally, the excitation light source comprises a second excitation light source having a wavelength in a range of 200nm to 300 nm.

The light of this wave band is deep ultraviolet light, can effectively kill the bacterium in the air, further promotes the cleanliness factor in the kitchen air.

Optionally, the excitation light source comprises a third excitation light source having a wavelength of less than 200 nm.

The light of the wave band is vacuum ultraviolet light, and can generate ozone, and the ozone can effectively kill bacteria and promote the decomposition of volatile gas.

Optionally, the air purification device is further provided with a germicidal lamp component, and the germicidal lamp component is used for sterilizing and disinfecting the air flow path from the air inlet to the air outlet.

The sterilizing lamp can emit ultraviolet rays which can kill pathogens such as microorganisms by radiating and damaging nucleic acid functions of the microorganisms, has high sterilizing strength of the ultraviolet rays, can kill bacteria and viruses in a short time, belongs to a pure physical sterilizing method, and has no secondary pollution. Therefore, the air flow path from the air inlet to the air outlet can be sterilized and disinfected through the sterilizing lamp piece, so that the bacterial content in the air flowing out from the air outlet is reduced, and the air cleanliness in a kitchen is further improved.

The technical scheme of the utility model is that the small part of the oil smoke escaping to other spaces in the kitchen is removed by the air purification device, wherein, the purification air channel and the oil smoke absorption air channel of the air purification device are not communicated with each other, namely the purification air channel and the oil smoke absorption air channel are independent, the air inlet and the air outlet are both communicated with the room, the air inlet is used for sucking the air in the kitchen, and the air outlet is used for discharging the filtered and purified air back to the kitchen room, so as to achieve the purpose of purifying the air; and locate the filtering component of air intake department and add the photodissociation module, the photodissociation module can produce the material of strong oxidizing property, can be with volatile gaseous decomposition for carbon dioxide and water, decompose into carbon dioxide, water and hydrogen chloride with chlorine-containing organic matter, the photodissociation module can be thoroughly innovated with volatile gaseous even more, consequently, the volatile gaseous of photodissociation module degradable kitchen environment, can promote the air cleanliness factor among the kitchen environment, reduce the harm of the escape oil smoke in the kitchen to human health.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 front view of an embodiment of the range hood of the present invention;

fig. 2 is a side view of an embodiment of the range hood of the present invention;

FIG. 3 is a front view of an embodiment of the air purification device of the range hood of the present invention;

fig. 4 is an exploded view of an air purification device of a range hood according to an embodiment of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

fig. 6 is an exploded view of an embodiment of a filter assembly of the range hood of the present invention at a viewing angle;

fig. 7 is a schematic view of the filter cassette of fig. 6 from another perspective.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described 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 accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments 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 appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "A and/or B" as an example, including either the A aspect, or the B aspect, or both A and B satisfied aspects. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a range hood.

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

a cigarette maker main body 100; and

the air purification device 200 is arranged on the cigarette machine main body 100, the air purification device 200 comprises a purification shell 210 and a filter assembly 300, the purification shell 210 is provided with an air inlet 211, an air outlet 212 and a purification air channel communicated with the air inlet 211 and the air outlet 212, and the filter assembly 300 is arranged at the air inlet 211;

the filter assembly 300 includes a photolysis module for degrading volatile gases.

In the embodiment of the present invention, the cigarette machine body includes a decoration cover 110 and a smoke collecting cover 120 disposed below the decoration cover 110. An oil smoke suction air duct is arranged in the decorative cover 110, the oil smoke suction air duct is provided with an oil smoke inlet and an oil smoke outlet, the oil smoke inlet is communicated with the indoor space, and the oil smoke inlet is usually hung above the kitchen range, so that oil smoke is sucked into the oil smoke suction air duct; the smoke outlet is communicated with the outside to discharge the oil smoke in the oil smoke suction channel to the outside. Without loss of generality, the range hood body 100 includes a smoke blower disposed within the smoke suction duct for driving airflow from the smoke inlet into the smoke suction duct and out the smoke outlet. It can be understood that the range hood main body 100 has the function of the conventional range hood, and can suck most of the oil smoke generated in the cooking process into the oil smoke suction duct and discharge the oil smoke to the outside.

The air purification device 200 is mainly used for removing a small part of oil smoke escaping to other spaces in a kitchen, thereby effectively avoiding the pollution of the oil smoke to the air environment and the damage to the health of human bodies. The purifying air duct and the oil smoke suction air duct of the air purifying device 200 are not communicated with each other, that is, the purifying air duct and the oil smoke suction air duct are independent from each other. The air inlet 211 and the air outlet 212 are communicated with the room, the air inlet 211 is used for sucking air in the kitchen room, and the air outlet 212 is used for discharging filtered and purified air back to the kitchen room so as to achieve the purpose of purifying air. The air purification apparatus 200 further comprises a purification fan disposed in the purification air duct for driving air to enter from the air inlet 211 and to be discharged from the air outlet 212.

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. Among them, VOCs have an influence on human health, mainly stimulate eyes and respiratory tract, cause skin allergy, and cause symptoms such as headache, pharyngalgia, hypodynamia and the like.

The utility model discloses in, filtering component 300 has add the photodissociation module, the photodissociation module can produce the material of strong oxidizing property (like hydroxyl free radical, oxygen etc.), can be with volatile gaseous decomposition for carbon dioxide and water, decompose chlorine-containing organic matter into carbon dioxide, water and hydrogen chloride, the photodissociation module can thoroughly be innovated volatile gaseous promptly, consequently, volatile gas (also be VOCs) in the photodissociation module degradable kitchen environment, can promote the air cleanliness factor in the kitchen environment, reduce the harm of the escape oil smoke in the kitchen to the health.

Further, in the present embodiment, as shown in fig. 6, the photolysis module includes a carrier 510, a photocatalytic material attached to the carrier 510, and an excitation light source 520, wherein the excitation light source 520 emits light toward the photocatalytic material for exciting the photocatalytic material. Alternatively, the photocatalytic material used to purify VOCs may be one or a combination of more than one of TiO2, WO3, CuO, Cu2O, ZnS, ZnO, CdS, CdSe, Fe3O4, Fe2O3, FeTiO3, Bi2O3, biooi, BiOCl, BiOBr, BiOF, BiVO4, BiWO4, Bi2MoO6, CdWO4, In2O3, Ag3PO4, AgCl, AgBr, AgI, MoO3, MoS2, SrTiO3, V2O5, SnO2, PbO, Co3O4, NiO, CeO2, MnOx, Cr2O3, or ZrO 2. The carrier 510 is used for fixing the photocatalytic material to prevent the photocatalytic material from losing, so as to improve the utilization rate of the photocatalytic material; the photocatalytic material can convert light energy into chemical energy, and can generate substances with strong oxidizing property under the irradiation of the excitation light source 520 so as to promote the decomposition of volatile gas and improve the cleanliness of kitchen air.

Further, in the present embodiment, as shown in fig. 6, the carrier 510 is a mesh-like porous structure to increase the specific surface area of the carrier 510, so that more photocatalytic materials can be attached to the carrier 510 to generate more strongly oxidizing substances, thereby improving the efficiency of the photolysis module in degrading volatile gases.

Further, in the present embodiment, the carrier 510 includes a metal foam or a honeycomb ceramic or a ceramic foam. Specifically, the carrier 510 may be Ni, Cu, Al, Fe-based foamed metal, cordierite, mica-based honeycomb ceramic, SiC, Al2O 3-based foamed ceramic, and the like. The material is of a porous structure, has good adhesiveness and good acid-base resistance and high temperature resistance, is suitable for serving as a carrier 510 of a photocatalytic material, and can effectively increase the contact area of the photocatalytic material and volatile gas, thereby increasing the degradation efficiency of the photolysis module on the volatile gas. Of course, in other embodiments, the carrier 510 may be a foam-like or metal-like photocatalytic mesh structure made of other materials.

Further, in the present embodiment, the photocatalytic material includes a modifying dopant and/or an electron conduction enhancer and/or an adsorbent, and the modifying dopant, the electron conduction enhancer and the adsorbent can be used to enhance the photocatalytic activity of the photocatalytic material.

Wherein the modified dopant includes metal doping (e.g., Fe, Co, Ni, Cu, Ag, V, Mg, Ce, etc.), non-metal doping (e.g., F, S, N, P, etc.), noble metal deposition (e.g., Au, Ag, Pt, Rh, Pd, etc.), semiconductor recombination (e.g., recombination between the above-listed photocatalytic materials); the electron conduction enhancer includes: graphene, carbon nanotubes, football alkene or other high molecular polymers containing graphite materials, polyaniline, polypyrrole and the like; the adsorbent comprises: activated alumina, activated carbon, hydroxyapatite, diatomaceous earth, and the like.

The substances can be added into the photocatalytic material and organically combined with the photocatalytic material to improve the photocatalytic activity of the photocatalytic material, so that the photocatalytic material can be easily excited by a laser light source, the spectral response range of the photocatalytic material can be expanded, and the utilization rate of excitation light emitted by an excitation light source 520 is improved.

Further, in the present embodiment, the excitation light source 520 includes an LED lamp and/or a discharge lamp. The LED lamp has excellent directivity and environmental protection, and has the advantages of high switching speed, narrow spectrum, long service life and the like; the discharge lamp has mature technology, low price, high brightness, higher radiation efficiency and longer service life. Both of them are suitable for being used as the excitation light source 520 of the photolysis module, alternatively, the excitation light source 520 may be a single type of light source, or may be a combination of different types of light sources, and in practical applications, the suitable excitation light source 520 may be selected according to different requirements.

Further, in the present embodiment, the excitation light source 520 includes a first excitation light source 520, and the wavelength of the first excitation light source 520 is in a range of 360nm-390 nm. Under the light irradiation of this wave band, photocatalytic material's photocatalytic activity is stronger, and photocatalytic material can produce more strong oxidizing substance to promote the degradation efficiency of photolysis module to volatile gas.

Further, in the present embodiment, the excitation light source 520 includes a second excitation light source 520, and the wavelength of the second excitation light source 520 is in the range of 200nm-300 nm. The light of this wave band is the deep ultraviolet light, and the ultraviolet ray of this wave band can be absorbed by nucleic acid can be strong, causes DNA in the microbial cells such as bacterium and virus or RNA adjacent pyrimidine intermolecular formation unusual chemical bond, hinders the reproduction of DNA or RNA, finally causes the death of microbial cells to reach the purpose of disinfecting to further promote the cleanliness factor of kitchen air.

Further, in this embodiment, the excitation light sources 520 include a third excitation light source 520, and the wavelength of the third excitation light source 520 is less than 200 nm. The light of this wave band is vacuum ultraviolet light, and oxygen in the ionized air produces the oxygen ion, and free oxygen ion is unstable, can combine with the oxygen in the air, produces the ozone that has strong oxidation effect, and ozone not only can kill the bacterium effectively, can also promote the decomposition of volatile gas to further promote volatile gas's degradation efficiency, thereby further promote the air cleanliness factor in the kitchen.

Further, in this embodiment, the excitation light sources 520 may be a combination of different numbers of the first excitation light source 520, the second excitation light source 520 and the third excitation light source 520, so as to achieve better air purification effect.

Further, in this embodiment, the filter assembly 300 further includes a filter box 320, the filter box 320 is provided with a filter inlet, a filter outlet, and a filter cavity 323 communicating the filter inlet and the filter outlet, the filter inlet communicates with the chamber, and the filter outlet communicates with the air inlet 211; the filter assembly 300 further includes a filter element 310 for adsorbing soot particles, and both the filter element 310 and the carrier 510 are installed in the filter cavity 323. Kitchen air enters the filter chamber 323 from the filter inlet, passes through the filter element 310 and the carrier 510, and then flows into the clean air duct from the filter outlet. Specifically, the air passes through filter element 310, can make the PME composition in the oil smoke (also be the oil smoke granule) adsorbed, and the air passes through carrier 510, can make the VOCS composition in the oil smoke (also be volatile gas) decomposed, and like this, filter element 310 and photolysis module cooperate, can thoroughly filter the harmful component in the purification kitchen air to promote the air cleanliness factor in the kitchen.

Further, in this embodiment, as shown in fig. 6, the carrier 510 is disposed on a side of the filter element 310 away from the filter inlet. When air in a kitchen enters the air purification apparatus 200, the air passes through the filter element 310 first, so that the oil smoke particles are filtered to prevent the oil smoke particles from attaching to the carrier 510. It can be understood that if the soot particles are attached to the surface of the carrier 510, the photocatalytic material is blocked from receiving light, and thus, the photocatalytic material cannot generate enough strongly oxidizing substances, which will affect the decomposition of the volatile gas. In this embodiment, filter core 310 is closer to and filters the import setting, can avoid the emergence of above-mentioned condition to guarantee that the photodissociation module can effectively purify the volatile gas in the escape oil cigarette, thereby promote the air cleanliness factor in the kitchen. Of course, in other embodiments, the support 510 may be disposed on the side of the filter element 310 near the filter inlet, and the photolysis module may be guaranteed to effectively degrade the volatile gas by replacing the support 510.

Further, in this embodiment, the photocatalytic material is attached to a surface of the carrier 510 facing away from the filter element 310, so that the photocatalytic material is exposed to the excitation light emitted from the excitation light source 520, thereby ensuring effective degradation of the volatile gas by the photolysis module. In addition, in order to improve the compactness of the filter assembly 300, the carrier 510 can be tightly attached to the filter element 310, and the photolysis process of the photolysis module is not affected. Of course, in other embodiments, the photocatalytic material may be attached to a surface of the carrier 510 near the filter element 310, and the excitation light source 520 may be disposed between the carrier 510 and the filter element 310, which may also ensure effective degradation of the volatile gas by the photolysis module.

Further, in this embodiment, as shown in fig. 6, the filter box 320 further includes an air passing frame 324 disposed at the filtering outlet, the excitation light source 520 is disposed on the air passing frame 324, the emitted sterilization light can be directly opposite to the surface of the carrier 510, so that the photocatalytic material on the surface of the carrier 510 can receive stronger irradiation, so as to increase the strong oxidizing substance generated on the surface of the carrier 510, and thus the efficiency of the photolysis module in degrading the volatile gas is improved. Without loss of generality, the excitation light sources 520 may be adhered or embedded on the air frame 324 to be stably fixed on the air frame 324. Of course, in other embodiments, the excitation light sources 520 may be mounted on the inner top wall and the inner bottom wall of the filter cartridge 320, and the light emitted therefrom may be irradiated on the surface of the carrier 510.

Further, in the present embodiment, the photolysis module includes a plurality of excitation light sources 520, and the excitation light sources 520 are spaced apart from each other in the longitudinal direction of the wind flowing frame 324. Thus, the excitation light of the excitation light sources 520 can cover the surface of the carrier 510, so that the photocatalytic material on the surface of the carrier 510 is fully activated, more strong oxidizing substances can be generated, the efficiency of the photolysis module for degrading the volatile gas can be improved, and the cleanliness of the kitchen air can be improved.

Further, in this embodiment, the air purification apparatus 200 is further provided with a germicidal lamp unit 400, and the germicidal lamp unit 400 is used for sterilizing and disinfecting an air flow path from the air inlet 211 to the air outlet 212. The germicidal lamp unit 400 can emit ultraviolet rays which can kill pathogens such as microorganisms by radiating to damage and destroy the nucleic acid function of the microorganisms, and the ultraviolet rays have high germicidal intensity and can kill bacteria and viruses in a short time, belonging to a pure physical disinfection method without secondary pollution. Therefore, the germicidal lamp unit 400 disposed in the air purification apparatus 200 can sterilize and disinfect the air in the air purification apparatus 200 to reduce the bacteria content in the air flowing out from the air outlet 212, thereby further purifying the air in the kitchen. And through the drive of purification fan, the air in the kitchen can get into air purification device 200, accepts the bactericidal effect of sterilamp spare 400, and the air after the disinfection of disinfecting also can continuously be discharged from air outlet 212, so, can form the air cycle flow path in the kitchen to make sterilamp spare 400 can continuously disinfect the disinfection to the air in the kitchen, further promote the air cleanliness factor in the kitchen.

Further, in this embodiment, the germicidal lamp unit 400 is disposed in the purification air duct to sterilize the air in the purification air duct. It can be understood that, in the air purification apparatus, the air needs to flow to the air outlet through the purification air channel, so the germicidal lamp assembly 400 disposed in the purification air channel can sterilize the air in the purification air channel, thereby reducing the bacterial content in the air flowing out from the air outlet 212.

Further, in this embodiment, as shown in fig. 4, the germicidal lamp unit 400 is disposed near the air outlet 212. The germicidal lamp unit 400 is disposed near the air outlet 212, so that the air after being sterilized is prevented from being secondarily polluted in a purification air duct at the downstream of the germicidal lamp unit 400 to the maximum extent, and the bacterial content in the air flowing out from the air outlet 212 is further reduced.

Further, in this embodiment, as shown in fig. 3 to fig. 5, the air purification apparatus 200 further includes an air guiding cover 800 disposed on the purification air duct, and the air guiding cover 800 is communicated with the air outlet 212; the wind scooper 800 is provided with an installation groove 810, and the germicidal lamp unit 400 is disposed in the installation groove 810. The wind scooper 800 of the present embodiment is connected between the purification fan and the wind outlet 212, so that the air flowing out from the purification fan is converted into a flow path and plays a role of converging wind force, and the purification efficiency of the air purification apparatus 200 can be improved to a certain extent; the germicidal lamp unit 400 of the present embodiment is mounted in the mounting groove 810 of the wind guiding cover 800, so that the germicidal lamp unit can sterilize the air flowing out of the air outlet 212, thereby reducing the bacteria content in the air flowing out of the air outlet 212.

Further, in this embodiment, as shown in fig. 4, the germicidal lamp assembly 400 includes a lamp body 420 and a seat body 410, the seat body 410 is installed in the installation slot 810, and the lamp body 420 is exposed outside the installation slot 810, so that the ultraviolet light emitted by the lamp body 420 is not blocked by the slot wall of the installation slot 810, and the irradiation range of the germicidal lamp assembly 400 is increased. Of course, in other embodiments, the wall of the mounting groove 810 can be made of a light-transmitting material, so that even though the lamp body 420 cannot be exposed out of the mounting groove 810, the light emitted from the lamp body 420 can be irradiated into the purification air duct.

Further, in this embodiment, the light emitting direction of the lamp body 420 faces the inner wall surface of the air guiding cover 800, so as to prevent the light of the lamp body 420 from leaking from the air outlet 212. Because the light-emitting direction of the lamp body 420 of the germicidal lamp unit 400 does not face the air outlet 212, the ultraviolet light for sterilization does not irradiate the skin or eyes of the human body through the air outlet 212, so as to prevent the germicidal lamp unit 400 from generating side effects of damaging the health of the human body, and thus the user can safely use the germicidal function of the germicidal lamp unit 400.

Further, in the embodiment, as shown in fig. 3 to 5, the mounting groove 810 is disposed through the wall surface of the wind scooper 800, so that the mounting groove 810 has a notch on the outer surface of the wind scooper 800, and the germicidal lamp assembly 400 can be mounted into the mounting groove 810 from the notch, thereby improving the mounting convenience of the germicidal lamp assembly 400.

Further, in this embodiment, the seat body 410 is in interference fit with the mounting groove 810, so that the germicidal lamp unit 400 can be stably mounted in the mounting groove 810 to continuously sterilize and disinfect the air flowing through the air guide cover 800, and in addition, ultraviolet rays for sterilization can be prevented from leaking from the wall surface of the air guide cover 800 to damage the health of the human body.

Further, in this embodiment, as shown in fig. 3, the wind scooper 800 has a first end 801 and a second end 802 opposite to each other, the second end 802 is close to the wind outlet 212, the cross-sectional area of the first end 801 is smaller than that of the second end 802, and the mounting groove 810 is disposed close to the first end 801. It can be understood that the first end 801 is connected to the purifying fan, the second end 802 is connected to the air outlet 212, and the first end 801 is located upstream of the second end 802, wherein the germicidal lamp assembly 400 is disposed near the first end 801, and because the cross-sectional area of the first end 801 is smaller, the germicidal lamp assembly 400 can sterilize and disinfect air more intensively at the installation slot 810, thereby further reducing the bacterial content in the air flowing out from the air outlet 212; and the cross-sectional area of second end 802 is bigger, more is favorable to the air diffusion after the disinfection to promote the air cleanliness factor in the kitchen environment.

Further, in this embodiment, a plurality of mounting grooves 810 and a plurality of germicidal lamp units 400 are disposed in the air guiding cover 800, the mounting grooves 810 are disposed at intervals in the circumferential direction of the first end 801, and one mounting groove 810 is disposed with at least one germicidal lamp unit 400, so that the germicidal lamp units 400 can be disposed at intervals on the circumferential wall of the first end 801 of the air guiding cover 800, and thus, ultraviolet rays emitted by the germicidal lamp units 400 can cover the first end 801 of the air guiding cover 800 in all directions, so as to sufficiently sterilize and disinfect air passing through the first end 801, thereby further reducing the bacteria content in the air flowing out from the air outlet 212. Optionally, a plurality of germicidal lamp units 400 can be installed in one installation groove 810, the irradiation angle of the germicidal lamp units 400 is effective, the germicidal lamp units 400 are installed in the installation groove 810 at different installation angles, the illumination radiation angle of the installation groove 810 can be enlarged, and the first end 801 can be covered without arranging too many installation grooves 810 in the wind scooper 800, so that the structure of the wind scooper 800 is simpler, and the production and processing of the wind scooper 800 are facilitated.

Further, in this embodiment, the germicidal lamp assembly 400 is fixedly connected to the mounting groove 810 by a snap fit or an insertion or a screw locking manner, so as to improve the connection stability between the germicidal lamp assembly 400 and the mounting groove 810. It can be understood that the germicidal lamp unit 400 installed in the purification air duct will be impacted by the air flow, so it is necessary to ensure the connection stability with the installation groove 810 to ensure that it can stably perform the sterilization and disinfection function in the purification air duct. In addition, in this way, the detachable connection of the germicidal lamp unit 400 and the lamp unit mounting groove 810 can be realized, so as to facilitate the replacement of the germicidal lamp unit 400. Of course, in other embodiments, the housing of the germicidal lamp unit 400 may be integrally formed with the mounting groove 810, and the mounting groove 810 may be fixedly connected to the inner wall of the air guiding cover 800, so that the germicidal lamp unit 400 and the air guiding cover 800 may be fixedly connected.

Further, in this embodiment, as shown in fig. 7, the germicidal lamp unit 400 is also disposed on the filter assembly 300; and the light emitting direction of the germicidal lamp unit 400 faces the filter element 310, so as to sterilize the filter element 310. In this embodiment, the germicidal light emitted by the germicidal lamp fixture 400 can not only sterilize the air flowing through the air inlet 211, but also effectively kill bacteria in the filter element 310, thereby avoiding bacterial growth in the filter element 310 and ensuring the cleanliness of the air flowing out of the air outlet 212.

Further, in the present embodiment, as shown in fig. 4, the filter assembly 300 is detachably installed at the intake vent 211. It can be understood that the filter assembly 300 has a limited ability to absorb soot particles, and the filter assembly 300 needs to be replaced or cleaned periodically to enable the air purification apparatus 200 to continue filtering soot particles. The filter assembly 300 in this embodiment is detachably installed at the air inlet 211, so that the cigarette maker main body 100 does not need to be disassembled when the filter assembly 300 of the air purification device 200 is cleaned or replaced, thereby improving the disassembling and assembling efficiency of the filter assembly 300. Here, the size and shape of the mounting opening may be adapted to the size and shape of the filter assembly 300. Optionally, the filter assembly 300 further comprises a handle 326 for being held by a hand to disassemble and assemble the filter assembly 300. There are many configurations for the grip portion 326, for example, the grip portion 326 may be, but is not limited to, a grip post, a grip rod, a grip groove, and the like.

Further, in this embodiment, the filter element 310 includes a particle filtering layer 311, and the germicidal lamp assembly 400 is disposed on the filter box 320 and emits light toward the particle filtering layer 311, so as to sterilize and disinfect the particle filtering layer 311. Because particle filter layer 311 is used for adsorbing the PME in the oil smoke, so the particle filter layer 311 surface will be attached with the oil smoke granule, for avoiding these oil smoke granules to breed the bacterium, the luminous direction of sterilamp spare 400 sets up towards particle filter layer 311 to disinfect particle filter layer 311, thereby ensure that the air through particle filter layer 311 can not carry the bacterium that comes from particle filter layer 311, avoid the secondary pollution to the kitchen air. In particular, the Particulate filtering layer includes HEPA (High Efficiency Air filtration) Filter paper containing a PP (polypropylene) meltblown layer subjected to electrostatic electret treatment, glass fiber, electrospun nanofiber or PTFE (polytetrafluoroethylene) membrane, and the Particulate filtering layer 311 made of these materials has High filtering Efficiency and is more favorable for adsorption of soot particles.

Further, in this embodiment, as shown in fig. 7, the filter box 320 further includes an air inlet grille 325 disposed at the filter inlet, and the germicidal lamp unit 400 is mounted to the air inlet grille 325 to sterilize the particle filtering layer 311. The air inlet grille 325 can prevent foreign matters from entering the purification air duct through the filtering inlet, the germicidal lamp unit 400 is mounted on the air inlet grille 325, the germicidal light emitted by the germicidal lamp unit can be over against the surface of the particle filter layer 311, and the particle filter layer 311 is arranged closer to the air inlet grille 325, so that the particle filter layer 311 can also receive stronger irradiation, and the germicidal intensity of the germicidal lamp unit 400 is further improved. Without loss of generality, the germicidal lamp assembly 400 may be attached to the grille 325 by means of adhesive or embedding, so as to be stably fixed to the grille 325. Of course, in other embodiments, the germicidal lamp unit 400 may be mounted on the inner top wall and the inner bottom wall of the filter box 320, and the light emitted from the germicidal lamp unit may be irradiated onto the particle filtering layer 311.

Further, in the present embodiment, as shown in fig. 7, the germicidal lamp assembly 400 is provided in a plurality, and the germicidal lamp assembly 400 is distributed at intervals along the longitudinal direction of the air intake grille 325. It can be understood that germicidal lamp fixture 400 has a certain irradiation angle, and the ultraviolet ray that single germicidal lamp fixture 400 sent hardly covers filter core 310, in this embodiment, filter assembly 300 is equipped with a plurality of germicidal lamp fixtures 400, can more conveniently cover filter core 310 in germicidal lamp fixture 400's irradiation range to carry out the omnidirectional abundant disinfection of disinfecting to filter core 310, thereby ensure the cleanliness factor of the air that air outlet 212 flows. The plurality of germicidal lamp units 400 are distributed along the longitudinal direction of the air inlet grille 325 at intervals, so that germicidal light rays of the plurality of germicidal lamp units 400 can cover the surface of the particle filter layer 311 to realize omnibearing disinfection and sterilization of the particle filter layer 311, thereby ensuring that no bacteria are bred on the particle filter layer 311.

Further, in the present embodiment, as shown in fig. 6, the filter cavity 323 has an opening 327, and the particle filtering layer 311 is installed in the filter cavity 323 in a manner of being drawable from the opening 327. It can be understood that the adsorption of the particle filtering layer 311 to the soot particles is limited, the germicidal lamp unit 400 can only inactivate bacteria thereon, and cannot decompose the soot particles, and when the adsorption of the particle filtering layer 311 to the soot particles reaches saturation, the soot particles can be extracted from the opening 327 and replaced with a new particle filtering layer 311, so as to ensure that the air purification apparatus 200 can effectively purify the escaping soot. Thus, the replacement of the entire filter assembly 300 is avoided, and the cost can be saved.

Further, in the present embodiment, the germicidal lamp assembly 400 is an LED germicidal lamp assembly and/or a discharge germicidal lamp assembly. The LED germicidal lamp has excellent directivity and environmental protection, and has the advantages of high switching speed, narrow spectrum, long service life and the like; the discharge sterilizing lamp is mainly a mercury vapor discharge ultraviolet lamp, has mature technology, low price, high brightness, higher ultraviolet radiation efficiency and longer service life. Therefore, both of them are suitable for sanitary disinfection to exert the sterilization effect. In this embodiment, the germicidal lamp unit 400 may be a single type, or a combination of different numbers and different types, and in practical applications, technicians may select different combinations according to their needs.

Further, in the present embodiment, the germicidal lamp unit 400 includes a UVC ultraviolet lamp unit and/or a vacuum ultraviolet lamp unit. Generally, long-wave ultraviolet rays with the wavelength of 315-390 nm are abbreviated as UVA, medium-wave ultraviolet rays with the wavelength of 280-315 nm are abbreviated as UVB, short-wave ultraviolet rays with the wavelength of 200-280 nm are abbreviated as UVC, and short-wave ultraviolet rays with the wavelength of 10-200 nm are abbreviated as vacuum ultraviolet rays. The UVC ultraviolet lamp can emit short-wave ultraviolet rays with the wavelength of 200-280 nm, and nucleic acid can strongly absorb the ultraviolet rays with the wave band, so that abnormal chemical bonds are formed between DNA or RNA adjacent pyrimidine molecules in microbial cells such as bacteria, viruses and the like, the replication of the DNA or RNA is hindered, the microbial cells are killed, and the aims of sterilization and disinfection are fulfilled. The vacuum ultraviolet lamp can emit short-wave ultraviolet rays with the wavelength of 10-200 nm, the ultraviolet rays in the wave band can ionize oxygen in the air to generate oxygen ions, free oxygen ions are unstable and then are combined with the oxygen in the air to generate ozone with strong oxidation effect, and the ozone can also effectively kill bacteria. The germicidal lamp unit 400 in this embodiment may be one or more UVC ultraviolet lamp units or vacuum ultraviolet lamp units of a single type, or a combination of different numbers of UVC ultraviolet lamp units or vacuum ultraviolet lamp units to kill bacteria in various ways.

Further, in this embodiment, as shown in fig. 4, the air inlet 211 is disposed on a side surface of the purification housing. It can be understood that the oil smoke that the culinary art produced escapes from range hood's side easily, and in this embodiment, air intake 211 locates the side of purifying housing, more is favorable to installing in the filtering component 300 of air intake 211 purifying escaping the oil smoke to promote the cleanliness factor of kitchen air.

Further, in this embodiment, as shown in fig. 4, the air inlets 211 are disposed on two opposite side surfaces of the purifying housing, so as to further improve the purifying efficiency of the filtering assembly 300 for escaping lampblack; two filter assemblies 300 are correspondingly arranged, and each filter assembly 300 is provided with the germicidal lamp unit 400, so that the filter element 310 of each filter assembly 300 can receive the germicidal effect of the germicidal lamp unit 400.

Further, in this embodiment, the air purification device 200 includes a plurality of control switches, and the opening and closing of the air purification device 200, the germicidal lamp unit 400, and the photolysis module are controlled by different control switches respectively.

Firstly, when the air cleanliness of the kitchen is high, the air purification device 200 can be independently started without starting the germicidal lamp 400 arranged in the purification air duct, so that the air purification of the kitchen can be satisfied, and the energy waste can be avoided.

Secondly, the air purification device 200 can purify escaping oil smoke and the sterilizing and disinfecting of the filter element 310 by the germicidal lamp unit 400 arranged at the air inlet can be respectively and independently performed without affecting each other. It can be understood that bacterial growth needs certain conditions, therefore, as long as regularly open germicidal lamp spare 400, can make particle filter layer 311 not possess the condition of breeding the bacterium for a long time, thereby effectively avoid bacterial growth on particle filter layer 311, and needn't open germicidal lamp spare 400 for a long time, cause the waste of the energy, and germicidal light of germicidal lamp spare 400 has certain injury to the human body, although its germicidal light is towards filter core 310, but under certain angle, the user probably has the risk of exposing under germicidal light, therefore, optionally, the user can select to open germicidal lamp spare 400 alone after cooking finishes at every turn, disinfect to particle filter layer 311, neither can receive ultraviolet radiation, can avoid breeding the bacterium on filter core 310 again.

Moreover, it can be understood that when the cooking generates a small amount of oil smoke, the oil smoke escaping from the air in the kitchen is not too much, and at this time, the filter element 310 of the air purification device 200 is enough to filter and absorb the oil smoke particles and volatile gas in the escaping oil smoke, and the photolysis module is not required to be used, so that the cleanliness of the air in the kitchen can reach the standard without damaging the health of the human body.

Therefore, different functions of the air purification apparatus 200 are controlled by different control switches, so that more purification modes can be provided for the user to select. Of course, in other embodiments, the air purification apparatus 200 may be provided with only one control switch, and the user may select a desired function in the function menu by means of the control switch.

The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims (13)

1. A range hood, comprising:

a cigarette machine main body; and

the air purification device is arranged on the cigarette machine main body and comprises a purification shell and a filter assembly, the purification shell is provided with an air inlet, an air outlet and a purification air channel communicated with the air inlet and the air outlet, and the filter assembly is arranged at the air inlet;

the filter assembly includes a photolysis module for degrading volatile gases.

2. The range hood of claim 1, wherein the photolysis module comprises a carrier, a photocatalytic material and an excitation light source, the photocatalytic material is attached to the carrier, and the excitation light source emits light toward the photocatalytic material for exciting the photocatalytic material.

3. The range hood of claim 2, wherein the filter assembly further comprises a filter box, the filter box is provided with a filter inlet, a filter outlet, and a filter cavity communicating the filter inlet and the filter outlet, the filter inlet is communicated with the chamber, and the filter outlet is communicated with the air inlet;

the filter component also comprises a filter element for adsorbing oil smoke particles, and the filter element and the carrier are both arranged in the filter cavity.

4. The range hood of claim 3 wherein the carrier is disposed on a side of the filter element remote from the filter inlet.

5. The range hood of claim 4 wherein the photocatalytic material is attached to a side of the support facing away from the filter element.

6. The range hood of claim 3, wherein the filter box further comprises an air frame disposed at the filter outlet, and the excitation light source is disposed on the air frame.

7. The range hood of claim 6, wherein the photolysis module comprises a plurality of excitation light sources, and the excitation light sources are distributed at intervals in the longitudinal direction of the air-passing frame.

8. The range hood of claim 2 wherein the carrier is a mesh-like porous structure.

9. The range hood of claim 8 wherein the carrier comprises a metal foam or a ceramic honeycomb or a ceramic foam.

10. The range hood of claim 2 wherein the photocatalytic material comprises a modifying dopant and/or an electron conductivity enhancer and/or an adsorbent, wherein the modifying dopant, the electron conductivity enhancer, and the adsorbent are operable to enhance the photocatalytic activity of the photocatalytic material.

11. The range hood of claim 2, wherein the excitation light source comprises an LED lamp and/or a discharge lamp.

12. The range hood of claim 2, wherein the excitation light source comprises a first excitation light source having a wavelength in a range of 360nm to 390 nm;

and/or the excitation light source comprises a second excitation light source, and the wavelength range of the second excitation light source is 200nm-300 nm;

and/or the excitation light source comprises a third excitation light source with a wavelength less than 200 nm.

13. The range hood according to any one of claims 1 to 12, wherein the air purification device is further provided with a germicidal lamp for sterilizing and disinfecting the air flow path from the air inlet to the air outlet.

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