KR0145808B1 - Apparatus and method for air-purifying in automobiles - Google Patents

Abstract

An effective and safer vehicle air purifying apparatus using a multilayer filter means is provided. The air purifier for a vehicle according to the present invention is very effective because it uses a multi-layered filter means for selectively purifying each pollution cause, and not only has no adverse function such as ozone generation, but also purifies before air enters the vehicle. In a preferred embodiment according to the present invention, the air purifying apparatus is composed of a multi-layer filter means including simultaneously a filtration filter, activated carbon, hopcalite, and zeolite. Since the air purifying device according to the present invention is mounted on the air inlet inside the vehicle air conditioning system, there is no protruding portion on the outside, so there is no fear of secondary injury in the event of an accident, and the air purification is performed before the air is introduced into the vehicle. Even higher. When the air purification apparatus according to the present invention is used for a long time and the air purification ability is lowered, the filter means can be regenerated and used semi-permanently by replacing a part of the filter means or by removing the air adsorbed to the filter means by the heating means. .

Description

Vehicle air purifier and method

1 is a schematic plan view of the interior of a motor vehicle in which a preferred embodiment according to the invention is shown;

2 is a schematic side view of the interior of the motor vehicle shown in FIG.

3 is a schematic cross-sectional view showing an air purification device with a multilayer filter means according to the present invention.

* Explanation of symbols for main parts of the drawings

10: air purification device 12: air flow

30: multilayer filter means 32: suction port

34: first filter means 36: second filter means

38: third filter means 40: fourth filter means

42: outlet 44: fixing means

46: outer wall 48: heating means

The present invention relates to a vehicle interior air purification apparatus and method, and more particularly, to a vehicle interior air purification apparatus and method for preventing the introduction of contaminants into the vehicle interior by means of a multilayer filter means.

Today, air pollution has reached a level that seriously affects human health. In particular, air pollutants around roads are mostly caused by combustion gases of automobiles, and largely particulate matter such as dust, volatile organic pollutants and carbon monoxide (CO), sulfur dioxide (SO ₂ ), nitrogen dioxide (NO ₂ ), and ozone (O). ₃ ) It can be classified into gaseous substances. Various air purifiers have been proposed to prevent these air pollutants from entering the vehicle. Apparatuses for purifying air in a vehicle can be classified into air purifiers using an electric dust collecting method and air purifiers using anion generators. Electrostatic precipitating means that the particles in the atmosphere are charged with the negative electrode or the positive electrode through the discharge, and the charged particles are attached to the conductive plate having the opposite electrode charged by the electrical attraction to remove the particles causing the contamination. Say the way. When air purification is performed according to the electric dust collection method, ozone (O ₃ ) is generated in the process of charging particles such as dust. Ozone is a pollutant that irritates the bronchus and mucous membranes and has been published in atmospheric environmental standards. Therefore, when the electrostatic precipitating method is used, a problem occurs that ozone generated by the air purifier increases air pollution.

Anion generators are devices that ionize particles in the atmosphere by releasing electrons into the atmosphere. When the electrons emitted from the negative ion generating device interact with the floating dust in the atmosphere, the dust is ionized with anions, and the ionized floating dust is deposited on the surrounding objects and removed from the atmosphere. However, when the negative ion generating device is used in a high concentration of suspended dust, it is known that the amount of dust deposited in the lung increases, which adversely affects health. In addition, there is a problem that ozone is generated in the negative ion generator as in the electrostatic precipitator.

These conventional air purifiers have a limitation in the air purifying function since they aim to remove air pollutants that have already entered the vehicle. In addition, the conventional air purifier is designed to be mounted on a dashboard in front of the front passenger seat, which is likely to cause the injury of the occupant in the event of a crash.

SUMMARY OF THE INVENTION The present invention has been made to solve such problems, and an object thereof is to provide an improved air purifying device that performs an air purifying action before air is introduced into a vehicle.

Another object of the present invention is to provide a semi-permanent automotive indoor air purifying apparatus including a multilayer filter means for selectively purifying according to the cause of air pollution.

It is yet another object of the present invention to provide a safe air purification device that eliminates the secondary cause of injury in an accident.

According to the present invention, unlike the conventional electric dust collection method or anion generating device, it is possible to purify all the various pollutants by performing the air purification by the multi-layer filter means including the filter means which is the purification layer for each air pollution cause. And no additional contaminants such as ozone are produced. In addition, the air purifying apparatus according to the present invention is semi-permanent because the filter is heated by a heating means after use for a certain period of time, so that the pollutant adsorbed on the filter means can be reused after desorption. According to the present invention, since the purified air is circulated in the vehicle as it is purified before the air is introduced into the vehicle, the purification effect can be further enhanced.

According to a preferred embodiment of the present invention, there is provided an air purification device of a multi-layer filter means consisting of a filtration filter device, an activated carbon layer, a hopcalite catalyst layer, and a zeolite layer at an air inlet of an automotive indoor air conditioning system. In addition, effective air purification is performed by removing particulates and gaseous pollutants in the air flowing into the vehicle before entering the vehicle interior. In addition, since the device according to the invention is mounted inside an automotive air conditioning system, there is no risk of injury due to a collision as compared to a conventional air purification device mounted on a dashboard. After being used for a certain time, the activated carbon layer, the hopcalite layer, and the zeolite layer of the apparatus can be used semi-permanently because the adsorbed contaminant is desorbed when heated above a certain temperature by a heating means.

Other objects, features or advantages of the present invention will become apparent from the following detailed description set forth in conjunction with the accompanying drawings. In the drawings, the same reference numerals are given to the same elements.

1 and 2 are schematic diagrams showing air flow in a vehicle equipped with an air purifying apparatus according to the present invention. Here, the air purifying apparatus according to the present invention is indicated by the reference numeral 10, and the air flow direction is indicated by the reference numeral 12. 3 is a schematic cross-sectional view of an air purifying apparatus according to the present invention. The air introduced in the direction of the arrow 12 passes through the first filter means 34 which is the first filter through the inlet 32. The first filter means 34 filters particulate matter such as dust in the air. A regenerated dry filter may be used as the filtration filter, and the form of the filter may be a pleated shape or a random mat type. When the pleated filtration filter is used for the first filter means 34, the surface area is large, so that the dust removal efficiency is high and the pressure loss is low. As the first filter means, a filtration filter preferably having a weight of about 150 g / m ² and having a removal efficiency of 70-99.99% with respect to particles having a particle size of 0.3 μm can be used. The pleated filtration filter is fixed by fastening means 44 such as rubber packing. Air passing through the first filter means 34 flows into the second filter means 36. The second filter means 36 includes activated carbon and removes volatile substances, ozone, sulfur dioxide, odors, and the like from the atmosphere. The second filter means preferably comprises activated carbon having a particle size of 6 to 80 mesh, and the pressure drop does not exceed 40 mmH ₂ O, and air passes at a flow rate of 100 lpm or more. Air passing through the second filter means 36 passes through the third filter means 38. The third filter means 38 comprises a Hopcalite catalyst that can be used to remove carbon monoxide at room temperature. The third filter means preferably comprises hopcalite having a size of 50 to 400 mesh, and the pressure drop does not exceed 40 mmH ₂ O, and the air passes at a flow rate of 100 lpm or more. Air passing through the third filter means 38 flows into the fourth filter means 40. The fourth filter means 40 comprises zeolite. Nitrogen oxides such as nitrogen dioxide contained in the air are reduced when passing through the zeolite to be nitrogen and oxygen. In a preferred embodiment, the fourth filter means comprises 50 to 400 mesh zeolites, the pressure drop does not exceed 40 mmH ₂ O, and the air passes at a flow rate of 100 lpm or more. The air purified through the four filter means is introduced into the vehicle through the outlet 42.

As shown in FIG. 3, a fifth filter means made of a filtration filter is disposed between the fourth filter means 40 and the outlet 42 so that the air passing through the fourth filter means is filtered again before being discharged. You may.

After the air purification apparatus according to the present invention has been used for a long time, the filtration filter used for the first filter means 34 is replaced with a new filter to perform the filtration function. On the other hand, foreign matter is adsorbed on the surfaces of the second filter means 36, the third filter means 38, and the fourth filter means 40, which have been used for a long time, so that catalytic substances such as hopcalite or zeolite are sufficiently in contact with the inhaled air. As a result, the purification efficiency is reduced. The air purifying device according to the present invention is equipped with a heating means 48, for example an electric heating wire, which encloses the filter means inside the outer wall 46 of the filter means 36, 38, 40, so that the filter means 36, 38, 40 are equipped with. Can play. That is, when the second filter means 36, the third filter means 38 and the fourth filter means 40 are heated to a temperature of 200 to 500 ° C. by the heating means 48, the adsorbed contaminants are detached and air is removed. Since the function of the purification device is restored, the purification can be performed smoothly.

Therefore, the air purifying apparatus according to the present invention performs the selective purification according to the cause of the air pollution by the multi-layer filter means, there is an effect that can be used semi-permanently as a replacement or regeneration filter means after a long time use. The air purifier according to the present invention is different from the conventional vehicle air purifier, in which the polluted air is purged after being introduced into the vehicle interior, and thus, the air purifier is purified before the air is introduced into the vehicle, thereby obtaining a more effective air purification effect. In addition, since it does not have a protruding portion as in a conventional vehicle air purifying apparatus mounted on a dashboard or the like, the cause of secondary injuries in a collision is eliminated, which has the advantage of being safer.

Those skilled in the art will understand that the present invention can be implemented in other specific forms than the above embodiments. For example, the arrangement order of the filter means 34, 36, 38, 40 may be reversed. Accordingly, the above embodiments are illustrative and not restrictive, and the invention should not be construed as limited to the embodiments set forth herein.

Claims (14)

An apparatus for purifying air entering a vehicle interior, the apparatus comprising: first filter means comprising an exchangeable filter for filtering particulate contaminants in the air, volatile and gaseous contaminants A second filter means comprising activated carbon for filtering phosphorus ozone and sulfur dioxide, a third filter means including a hopcalite catalyst for filtering carbon monoxide, a gaseous pollutant, and nitrogen dioxide for filtering gaseous pollutants, And a fourth filter means comprising zeolite, wherein the first, second, third and fourth filter means are stacked to form a multilayer filter means. 2. The filter according to claim 1, wherein the multi-layer filter means further comprises fifth filter means comprising an exchangeable filtration filter for filtering particulate contaminants in the air, wherein the fifth filter means comprises: the first filter means; And filtering the air passing through the second, third and fourth filter means. The vehicle air purifier of claim 1, wherein the filtration filter is in a pleated form. 4. The vehicular air purifier according to claim 3, wherein the filtration filter has a basis weight of about 150 g / m ² and has a removal efficiency of 70 to 99.99% for particles having a particle size of 0.3 µm. The method of claim 1, wherein the second filter means comprises activated carbon particles having a particle size of 60 to 80 mesh (mesh), the pressure drop does not exceed 40mmH ₂ O, the air can pass through at a flow rate of 100lpm or more Car air purifier. The vehicle air purification of claim 1, wherein the third filter means comprises hopcalite having a particle size of 50 to 400 mesh, the pressure drop does not exceed 40 mmH ₂ O, and air can pass at a flow rate of 100 lpm or more. Device. The vehicle air purifier of claim 1, wherein the fourth filter means comprises a zeolite having a particle size of 50 to 400 mesh, the pressure drop does not exceed 40 mmH ₂ O, and the air can pass at a flow rate of 100 lpm or more. . 2. The vehicular air purifier of claim 1, wherein the vehicular air purifier is installed at an air inlet of the vehicular air conditioning system. 8. The heating apparatus according to any one of claims 1 and 5 to 7, comprising heating means for desorbing pollutants adsorbed by heating the second, third, or fourth filter means. The air filter for a vehicle. 10. The air purification apparatus for a vehicle according to claim 9, wherein said heating means heats said second, third, or fourth filter means to a temperature of 200 to 500 deg. 10. The vehicular air purifier of claim 9, wherein the heating means is an electric heating wire surrounding the second, third or fourth filter means. A method for purifying air in a vehicle, the method comprising: filtering particulate contaminants in air by a first filter means before air enters the vehicle, volatiles, and gaseous pollutants Filtering phosphorus ozone and sulfur dioxide by a second filter means, filtering by removing carbon monoxide, a gaseous pollutant, by a third filter means, and reducing and filtering nitrogen dioxide, a gaseous pollutant, by a fourth filter means Air purification method comprising the step of. 13. The method of claim 12, wherein said second, third and fourth filter means are reused by heating to remove adsorbed contaminants. The method of claim 13, wherein the second, third and fourth filter means are heated to a temperature of 200 to 500 ° C.