CN111237833A - A range hood with air purification function - Google Patents

Abstract

The utility model provides a take lampblack absorber of air purification function which characterized in that: the range hood comprises a range hood body, an air inlet and an air outlet, wherein the air inlet and the air outlet are arranged on the range hood body; the air purification module comprises an air guide cover, a fan, an electrostatic dust collector and a filter screen, wherein the fan is installed at an air inlet of the air guide cover, the electrostatic dust collector is installed at an air outlet of the air guide cover, the filter screen covers the air outlet end of the electrostatic dust collector and covers the air outlet of the range hood body, and the electrostatic dust collector is electrically connected with the static electricity and anion generator. The invention has the beneficial effects that: the ultrahigh specific surface and the peculiar electrostatic adsorption capacity of the graphene that utilize high-voltage static to switch on in the present case can produce excellent adsorption capacity, and dust and grease of the granule of littleer in the separation air reach better purifying effect.

Description

A range hood with air purification function

technical field

The invention relates to a range hood, in particular to a range hood with an air purification function.

Background technique

During the cooking process, edible oil will form a mixture of gaseous, liquid and solid organic matter forms under high temperature conditions, that is, soot. According to the different forms, the mixture of liquid particles and solid particles is called oil mist, and these particles are divided into settleable particles and inhalable particles; the gaseous part is volatile organic compounds (VOCs), and the gaseous pollutants in domestic kitchens are also There is combustion exhaust. The particle size of settleable particles in oil fume is mainly distributed between 10-400um. These particles will settle to the ground and other surfaces under the action of their own gravity and the interaction between particles and other utensils, and will not have a lasting effect on the kitchen air environment. Sexual pollution. Particles with a particle size below 10um are usually called inhalable particles, namely PM10. These particles are not easy to settle and always float in the kitchen air environment. They can be inhaled by the human body and deposited in the respiratory tract, alveoli and other parts to cause diseases. endanger human health. The smaller the particle size, the deeper the site of entry into the respiratory tract. Among the respirable particles, particles with a diameter of less than or equal to 2.5um are called lung-infiltrating particles, namely PM2.5. Compared with particles with a particle size greater than 2.5um and less than 10um, PM2.5 is more harmful to the human body, while VOCs can also form PM2.5 through chemical reactions in the air.

Now cooking oil fume pollution and its harmful effects on human health has become a very important indoor environmental problem. As an electrical appliance that purifies the kitchen environment, the range hood can quickly remove the exhaust gas from the stove and the oil fumes generated during the cooking process and discharge it to the outside, which reduces the pollution to the air environment in the kitchen, but it is hoped that the range hood can only be used by the range hood. It is still very difficult to completely remove the exhaust gas, oil fume and odor, because there will always be parts that escape during the smoking process, and the exhaust gas, oil fume and odor that cannot be discharged will stay in the kitchen, threatening people's health. Health, and the use of a range hood does not improve the existing air quality in the home kitchen. At the same time, consumers now have a strong demand for the opening of the home kitchen, but during the cooking process, once the kitchen is opened, the air environment of the dining room and living room will be affected even if the range hood is used.

In recent years, as the public pays more attention to air quality and their own health, the market for air purifier products has expanded rapidly. But so far, there are no air purifier products specially suitable for home kitchens. This is mainly because the air environment of home kitchens is relatively special. Compared with the general indoor air environment, there are more oil droplets and edible oils in the kitchen air environment. Decomposition products (VOCs), combustion exhaust gases (carbon monoxide and nitrogen oxides, etc.) that undergo chemical changes with food during heating, and are more humid. In such an indoor air environment, general air purifiers cannot complete the task.

If the general air purifier is used in the air environment of the home kitchen, for the air purifier using the granular activated carbon filter, the activated carbon filter will first contact the incoming air. And the air is more humid. During use, the activated carbon particles will absorb a lot of water, which is easy to produce peculiar smell. At the same time, the oil droplets directly contacted will stick to the surface of the particles to block the adsorption holes, so that the use of a very short period of time After time, its effect of absorbing harmful gases and removing odor will be greatly reduced or even completely invalid. For air purifiers using activated carbon fiber filters, the HEPA high-efficiency filter will first contact the incoming air, which will block a large number of oil droplets, solid particles and absorb moisture in the air. Since the fiber filaments used in the HEPA high-efficiency filter are not lipophilic or hydrophilic (the oil droplets blocked by them and the absorbed moisture stay on the surface of the fibers), the oil droplets in the air will be wrapped on the fiber filaments. Coupled with the solid particles retained by it, in this case, the filaments and filaments will be quickly glued and adhered together. After a short period of use, the wind resistance of the HEPA high-efficiency filter will become large. , which seriously affects the normal use; the inside of the filter screen becomes wet due to inhalation of a large amount of water, which will provide a convenient environment for a large number of bacteria to breed. In addition, for the photolysis link of general air purifiers, its catalytic layer is very afraid of oil. If the oil cannot be removed through the previous links of photolysis, the catalytic layer will be covered by oil stains and the photolysis will lose its effect. Therefore, for the general air purifier, if you want to use it in the kitchen air environment, the above problems are unavoidable. The service life of the air purifier will be greatly shortened due to the particularity of the use environment, and its normal use will be seriously affected. and restrictions, and after a short period of use, it will itself become a source of pollution, so there is an urgent need to come up with a solution to improve the existing kitchen air pollution problem.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the shortcomings of the prior art, and to provide a range hood with an air purification function that is simple in structure, easy to use, and can effectively improve the air pollution problem in the kitchen environment.

The object of the present invention is achieved in the following manner: a range hood with an air purification function, characterized in that: it comprises a range hood body and an air inlet and an air outlet arranged on it, and an air inlet and an air outlet are installed between the air inlet and the air outlet. An air purification module; wherein, the air purification module includes an air guide hood, a fan, an electrostatic precipitator and a filter screen, wherein the fan is installed at the air inlet of the air guide hood, and the electrostatic precipitator is installed at the air outlet of the air guide hood, The filter screen covers the air outlet end of the electrostatic precipitator and covers the air outlet of the range hood body, and the electrostatic precipitator is electrically connected with the electrostatic and negative ion generators.

The electrostatic precipitator includes a hollow support, on which a plurality of cathode adsorption sheets and anode adsorption sheets are distributed at horizontal intervals, and a plurality of adsorption sheets of the same polarity are connected in parallel with electrostatic and negative ion generators.

Both the cathode adsorption sheet and the anode adsorption sheet include a conductive plate, two ends of the conductive plate are fixed with the bracket, and a graphene layer is sprayed on the surface of the conductive plate.

The front and rear ends of the bracket are also provided with ultraviolet lamps, and the ultraviolet lamps illuminate the cathode adsorption sheet and the anode adsorption sheet.

A mounting plate is arranged at the rear of the air guide cover, and the fan, static electricity and negative ion generator are mounted on the mounting plate.

The front end of the air guide hood is provided with a concave installation area, the electrostatic precipitator is fixed in the installation area, and an air guide port is arranged at the bottom of the installation area to connect with the fan.

The installation area is provided with a hinge hole, the bottom of the filter screen is provided with a hinge shaft, the filter screen is hinged with the hinge hole in the installation area through the hinge seat, and the top of the filter screen is provided with a self-bouncing door suction to connect with the air guide cover to close.

The electrostatic and negative ion generators are built in the bracket of the electrostatic precipitator, and the electrostatic precipitator is detachably installed in the air guide hood.

The beneficial effects of the invention are as follows: 1. The structure is simple, the production cost is low, and the market competitiveness is improved. 2. In this case, the ultra-high specific surface and unique electrostatic adsorption capacity of graphene through high-voltage electrostatic conduction can produce excellent adsorption capacity, block dust and grease from smaller particles in the air, and achieve better purification effect. 3. Equipped with a negative ion generator, which can generate a large amount of negative oxygen ions during the working process and discharge them into the kitchen along with the airflow, which plays a role in freshening the air and further improves the air quality of the kitchen. 4. The air purification module and the range hood are highly integrated, so there is no need to find another place to place the air purifier. When the work of the range hood is finished, the air purification function is automatically activated, which not only improves the utilization of kitchen space, but also facilitates users. operation.

Description of drawings

FIG. 1 is a diagram showing the assembly effect of the present invention and a range hood.

FIG. 2 is an enlarged view of the structure of part A of FIG. 1 in the present invention.

Figures 3, 4 and 5 are structural and assembly views of the air purification module in the present invention.

FIG. 6 is a schematic structural diagram of an electrostatic precipitator in the present invention.

7 is a cross-sectional view of the structure of the electrostatic precipitator in the present invention.

FIG. 8 is a radial cross-sectional view of the structure of the present invention in a reversed state.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings. A range hood with air purification function is characterized in that: it comprises a range hood body 1 and an air inlet 2 and an air outlet 3 arranged thereon, and an air purification module 4 is installed between the air inlet 2 and the air outlet 3; The air purification module 4 includes an air guide hood 41, a fan 42, an electrostatic precipitator 43 and a filter screen 44, wherein the fan 42 is installed at the air inlet of the air guide hood 41, and the electrostatic precipitator 43 is installed on the air guide hood The air outlet 3 of 41, the filter screen 44 covers the air outlet end of the electrostatic precipitator 43 and covers the air outlet 3 of the range hood body 1, and the electrostatic precipitator 43 is electrically connected with the static electricity and the negative ion generator 45, wherein static electricity occurs. The generator and the negative ion generator can be integrated into one module, or can be divided into two independent modules, which can be selected according to the actual situation during production.

The electrostatic precipitator 43 includes a hollow support 431 , a plurality of cathode suction sheets 432 and anode suction sheets 433 are distributed horizontally on the support 431 , and a plurality of suction sheets of the same polarity are connected in parallel with an electrostatic generator.

The cathode adsorption sheet 432 and the anode adsorption sheet 433 both include a conductive plate 434, two ends of the conductive plate 434 are fixed with the bracket 431, and a graphene layer 435 is sprayed on the surface of the conductive plate 434.

The front and rear ends of the bracket 431 are also provided with ultraviolet lamps, and the ultraviolet lamps illuminate the cathode adsorption sheet 432 and the anode adsorption sheet 433 .

A mounting plate 46 is provided at the rear of the air guide hood 41 , and the fan 42 , the electrostatic and negative ion generator 45 are mounted on the mounting plate 46 .

The front end of the air guide cover 41 is provided with a concave installation area, the electrostatic precipitator 43 is fixed in the installation area, and the bottom of the installation area is provided with an air guide port to connect with the fan 42 .

The installation area is provided with a hinge hole 5, the bottom of the filter screen 44 is provided with a hinge shaft 6, the filter screen 44 is hinged with the hinge hole 5 in the installation area through the hinge seat, and the top of the filter screen 44 is provided with a self-bouncing door suction 7. It is closed by docking with the wind guide cover 41 .

The electrostatic and negative ion generator 45 is built in the bracket 431 of the electrostatic precipitator 43, and the electrostatic precipitator 43 is detachably installed in the air guide hood.

Working principle: In this case, the installation space of the existing range hood shape and structure is fully utilized, and the air purification module is embedded and installed inside the range hood. When the range hood work is completed, the system automatically or manually activates the air Purification function.

After the air purification module is powered on, the fan, static electricity and negative ion generator 45 are powered on. The fan sucks the air in the kitchen from the air inlet 2, pours it into the air guide hood through the air duct, and enters the electrostatic precipitator 43. The electrostatic precipitator 43 includes a hollow bracket 431 , a plurality of cathode adsorption sheets 432 and anode adsorption sheets 433 are distributed laterally on the bracket 431 . When the electrostatic and negative ion generator 45 is working, high-voltage direct current is connected to the electrostatic precipitator 43, so that a strong electrostatic field is generated in the electrostatic precipitator 43. After being ionized, the soot particles have a positive or negative charge, and when the air flow contains charged particles, they can be adsorbed on the cathode adsorption sheet 432 and the anode adsorption sheet 433 .

It should be noted that: in order to enhance the adsorption capacity, the surfaces of the cathode adsorption sheet 432 and the anode adsorption sheet 433 in this case are sprayed with a graphene layer 435. Using graphene's ultra-high specific surface and unique electrostatic adsorption capacity, it can block smaller particles in the air, achieve better purification effect, and prevent bacterial growth at the same time. The electrostatic and negative ion generator 45 will also generate a large amount of negative oxygen ions and enter the kitchen environment through the flow of air flow. Viruses, bacteria, harmful substances, harmful gases and dusts containing various components in the air are all positive. Electric charge, floating in the kitchen with the air, is the root cause of various diseases. There are a lot of harmful substances in the air, when they and negative ions can meet with them, they will fall down after polymerization, and make them inactive, thus achieving the purpose of freshening and purifying the air in the kitchen.

It should be noted that: in this case, ultraviolet lamps are also provided at the front and rear ends of the bracket 431 , and the ultraviolet lamps illuminate the cathode adsorption sheet 432 and the anode adsorption sheet 433 . Here, two ultraviolet lamps with dominant wavelengths of 254nm and 365nm are preferred as the light source, wherein the 254nm wavelength ultraviolet light itself is very destructive to microorganisms. Nucleic acids will strongly absorb the energy of this band, and the binding state of proteins and nucleic acids will be broken, resulting in the death of bacteria or viruses. Therefore, the ultraviolet lamp can sterilize the air flowing through it, and can also sterilize the inside of the air purifier, especially the stains adsorbed on the surface of the cathode adsorption sheet 432 and the anode adsorption sheet 433, so as to avoid the user not cleaning the air purification module in time. Bacteria multiply and cause secondary air pollution.

It should be noted that: the installation area in this case is provided with a hinge hole 5, the bottom of the filter screen 44 is provided with a hinge shaft 6, the filter screen 44 is hinged with the hinge hole 5 in the installation area through the hinge seat, and the top of the filter screen 44 is provided with a The self-bounce door suction 7 is docked with the air guide hood 41 to close. When the user needs to clean the interior of the air purifier, he only needs to press the filter, and the filter can be opened by the rebound function of the self-bounce door suction 7. The user can remove the electrostatic precipitator from the inside of the module for cleaning. After the electrostatic precipitator is disassembled, it is also convenient for the user to clean the inside of the air guide hood and the inside of the filter screen, thereby avoiding the reduction of the purification effect of the air purification module due to long-term use. When the cleaning is completed, the user only needs to put the electrostatic dust removal module back, and the filter only needs to be closed when the filter is closed, which greatly facilitates the user's operation, thus eliminating the need for professional after-sales operation and reducing the user's later use cost.

To sum up the above, the structure in this case integrates the air purifier into the interior of the range hood, which has the advantages of being convenient to use and will not affect the internal layout of the home kitchen. It starts automatically after the cooking operation in the kitchen is completed. The use of this purifier can continuously purify the air environment in the kitchen, remove particulate pollutants in the air, eliminate odors and harmful gases in the kitchen, kill viruses and bacteria in the air, and effectively protect It can be widely used because of the health of users.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the description are only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have Various changes and modifications fall within the scope of the claimed invention.

Claims (8)

1. The utility model provides a take lampblack absorber of air purification function which characterized in that: the range hood comprises a range hood body (1), an air inlet (2) and an air outlet (3) which are arranged on the range hood body, wherein an air purification module (4) is arranged between the air inlet (2) and the air outlet (3); the air purification module (4) comprises an air guide cover (41), a fan (42), an electrostatic dust collector (43) and a filter screen (44), wherein the fan (42) is installed at an air inlet of the air guide cover (41), the electrostatic dust collector (43) is installed at an air outlet (3) of the air guide cover (41), the filter screen (44) covers an air outlet end of the electrostatic dust collector (43) and covers the air outlet (3) of the range hood body (1), and the electrostatic dust collector (43) is electrically connected with an electrostatic and negative ion generator (45).

2. A range hood with an air purification function according to claim 1, characterized in that: the electrostatic dust collector (43) comprises a hollow bracket (431), a plurality of cathode adsorption sheets (432) and anode adsorption sheets (433) are transversely distributed on the bracket (431) at intervals, and a plurality of adsorption sheets with the same polarity are connected with an access electrostatic and negative ion generator (45) in parallel.

3. A range hood with an air purification function according to claim 2, characterized in that: the cathode adsorption sheet (432) and the anode adsorption sheet (433) both comprise a conductive plate (434), two ends of the conductive plate (434) are fixed with the bracket (431), and the graphene layer (435) is sprayed on the surface of the conductive plate (434).

4. A range hood with an air purification function according to claim 1, characterized in that: the front end and the rear end of the bracket (431) are also provided with ultraviolet lamps which irradiate the cathode adsorption sheet (432) and the anode adsorption sheet (433).

5. A range hood with an air purification function according to claim 1, characterized in that: the rear part of the wind scooper (41) is provided with an installation plate (46), and the fan (42), the static generator and the negative ion generator (45) are installed on the installation plate (46).

6. A range hood with an air purification function according to claim 1, characterized in that: the front end of the air guide cover (41) is provided with an inwards concave mounting area, the electrostatic dust collector (43) is fixed in the mounting area, and the bottom of the mounting area is provided with an air guide opening which is in butt joint with the fan (42).

7. A range hood with an air purification function according to claim 6, wherein: the air conditioner is characterized in that a hinge hole (5) is formed in the mounting area, a hinge shaft (6) is arranged at the bottom of the filter screen (44), the filter screen (44) is hinged with the hinge hole (5) of the mounting area through the hinge seat, and a self-bouncing door stopper (7) is arranged at the top of the filter screen (44) and is in butt joint with the air guide cover (41) for closing.

8. A range hood with an air purification function according to claim 1, characterized in that: the static and negative ion generator is arranged in a bracket (431) of the static dust collector (43), and the static dust collector is detachably arranged in the wind guide cover.

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