KR101704304B1

KR101704304B1 - Method for reducing odor from evaporator core

Info

Publication number: KR101704304B1
Application number: KR1020150178635A
Authority: KR
Inventors: 이태희
Original assignee: 현대자동차주식회사
Priority date: 2015-12-14
Filing date: 2015-12-14
Publication date: 2017-02-08

Abstract

The present invention relates to a method for reducing odor from an evaporator core. The method for reducing odor from an evaporator core according to an aspect of the present invention comprises a step of flowing current of predetermined intensity for the predetermined time at a predetermined time interval to the evaporator core. The method for reducing odor from an evaporator core according to the present invention destroys microorganisms on a surface of the evaporator core by flowing current to the evaporator core of a metallic material, and continuously prevents the propagation of microorganisms on the surface of the evaporator core, thereby being able to reduce the odor of the evaporator core.

Description

{METHOD FOR REDUCING ODOR FROM EVAPORATOR CORE}

The present invention relates to a method for reducing odor of an eva core, and more particularly, to a method for destroying microbes on an eva core surface to reduce the odor of the eva core.

Clean air is recognized as the basis for human health and well-being, and unpleasant odors or polluted air are the main factors that hinder the pleasant environment. Unsatisfactory air quality in enclosed conditions is caused by two important factors: One is the indoor air pollutant generated directly from the constituent material itself (building, vehicle, etc.) constituting the enclosed environment and the other factor is the smell generated by the substance caused by human activity or the influx from the outside .

On the other hand, the air conditioning system is a system that optimizes the indoor environment by lowering the indoor temperature by aiming to harmonize air temperature, humidity, air flow and cleanliness in buildings, vehicles, railways, ships and aircraft. These air conditioning systems are increasing in penetration rate due to the improvement of living standards. There have been many improvements in the basic functions due to the increase of the air conditioning system, but there are still many problems to solve due to the environmental aspect for the indoor air quality.

One of the air conditioning systems, air conditioners, is known to be responsible for the metabolism of fungi and bacteria.

Due to the structure of the air conditioning system, all the air passes through the EVA core. During the heat exchange between the cold refrigerant and the air, condensation condensation occurs due to the temperature difference on the EVA core surface. If the condensation is continued, And environment in which bacteria can form and propagate. When fungi and bacteria are proliferated on the EVA core exposed to the outside air, volatile organic compounds (mVOCs) of the microorganisms are generated as the metabolites of the bacteria that have proliferated on the EVA core surface, and air passing through the EVA core is blown into the room The volatile organic compounds generated by the microorganisms may expose the room to odors caused by fungi and bacteria during long-term use.

The EVA core surface, which generates odor, is covered with biofilm for a long period of use. These are composed of bacteria, cell clusters and EPS, EPS is a protein, polysaccharide, polyuronic acid, nucleic acid and lipid. On the surface of the EVA core, various bacteria and fungi multiply as biofilms, and organic compounds (mVOCs) produced by microorganisms are discharged as metabolic materials. It is known as one of many factors of air conditioner odor.

On the other hand, when a wind tunnel, which is one of the air conditioning systems, is also used for a long time, a biofilm is formed on the surface of the EVA core (heat exchanger), and the odor due to the metabolism of the microorganisms is generated. Basically metal has antibacterial power, but it is about general microorganisms, and some microorganisms live on the surface irrespective of the antimicrobial activity of metal.

Various kinds of fragrances are commercially available to remove the odor. However, the fragrance and the germs of the ephacore are not fundamentally removed, and they are merely a role of temporarily diluting an unpleasant smell. Have not been developed specifically to act on specific microorganisms in the Eva core.

The present inventors have disclosed in Korean Patent Laid-Open No. 10-2012-0020309 that a biofilm formed of an odorless or fragrant specific microorganism on the surface of Eva core in order to prevent deposition and propagation of germs and fungi on the Eva core surface, A method for manufacturing an EVA core is disclosed.

However, the above-described invention is insufficient to demonstrate the effect of coating microorganisms on viability of the eva core and preventing the formation or smell of microorganisms causing odors such as actual odors.

Accordingly, there has been a need for research on a technology capable of creating a pleasant indoor air environment by reducing the odor generated in the EVA core by specifically blocking or preventing the propagation of microorganisms in the EVA core.

1. Korean Patent Publication No. 10-2012-0020309

The present invention relates to an eva core odor reduction method capable of reducing microbes on the surface of an eva core by flowing electric current through a metal eva core to reduce the odor that can be generated in the eva core.

According to an aspect of the present invention, there is provided a method for reducing the odor of an EVA core, comprising flowing a current of a predetermined intensity for a predetermined period of time to the EVA core at predetermined time intervals.

In addition, the current may be repeatedly flowed at 0.1 to 0.5 amps for 0.1 to 1 second at intervals of 10 to 19 minutes.

And, the eva core can be used as a heat exchanger in a wind tunnel, and the eva core can be used in a room air conditioning system.

On the other hand, the odor can be generated by the microbial biofilm formed on the surface of the EVA core, and the microbial cell wall can be destroyed by reducing the odor.

The material of the eva core may be copper.

The method for reducing the eva core odor according to the present invention is a method for reducing microbes on the surface of an eva core by flowing a current to the eva core made of a metal to continuously prevent the propagation of microorganisms on the surface of the eva core to reduce the odor of the eva core There is an effect that can be.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The present invention provides a method for reducing the odor of an eva core, which comprises flowing an electric current of a constant intensity to the eva core at a predetermined time interval for a predetermined period of time.

Hereinafter, a method for reducing the odor of Eva core according to a specific embodiment of the present invention will be described in detail.

Conventionally, biofilms formed by a specific microorganism on the surface of the core of EVA have been coated to prevent the deposition and propagation of bacteria and fungi which cause the offensive odor. There is insufficient evidence to demonstrate the effect of preventing the formation or smell of microorganisms causing odors such as odor. Thus, the inventors of the present invention confirmed that when a constant current is flowed at periodic intervals in the eva core, microbes and the like can be destroyed on the eva core surface and the propagation can be prevented, and the odor can be reduced.

In the present specification, the term "air conditioning system" is generally used to mean a system for comfortably maintaining temperature, humidity, air cleanliness, and flow in a space partially or wholly separated from the external environment. Preferable examples of the separated space may be an internal space partially or totally separated from the outside such as inside of a building or inside of a vehicle, a railroad, a ship, an aircraft, and the like. Examples of the air conditioning system include a wind tunnel, an air conditioner, and the like.

In the air conditioning system, all the air that passes through the air conditioning system passes through the EVA core, and the condensation condensation phenomenon due to the temperature difference continues on the EVA core surface, so that the environment becomes good for the growth of the microorganisms. . At this time, the microorganisms metabolize various substances in the air, which are indoor and outdoor, as nutrients, and the odor is generated by the volatile organic compounds (mVOCs) generated as a result of metabolism.

A method for reducing the odor of an eva core according to an aspect of the present invention is a method for reducing the odor generated by microbial metabolism in a microbial biofilm formed on the surface of an eva core, By flowing the current for a certain period of time, the cell wall of the microorganism can be destroyed and the smell can be reduced.

That is, current can be periodically flowed on the surface of the EVA core to destroy the cell walls of microorganisms, thereby destroying the microorganisms.

For the microbial removal effect through the current, the material of the EVA core is preferably a metal, more preferably copper. As the material of the EVA core, aluminum or the like which is nonconductive by a surface oxide film and the like among metals can not be used, and a metal such as copper which does not form an oxide film is preferable.

On the other hand, in the present invention, the current applied to the eva core may flow from 0.1 to 0.5 amperes at intervals of 10 to 19 minutes for 0.1 to 1 second.

The intensity of the current is preferably 0.1 to 0.5 amperes. This is because the microbial cell wall is not destroyed when it is less than 0.1 amperes, and there is a problem that it may cause energy loss and human body if it exceeds 0.5 ampere.

It is preferable that the interval for flowing the current is 10 to 19 minutes. This is because general microorganisms have a growth period of about 20 to 40 minutes, so that it is possible to effectively prevent microbial propagation by periodically flowing an electric current at intervals less than the minimum growth period.

The time for flowing the current is preferably 0.1 to 1 second. This is because microbial cell walls are not destroyed in the case of less than 0.1 second, and energy loss and human injury are caused in the case of exceeding 1 second.

On the other hand, the present invention can be more preferably applied when the eva core is copper. That is, it can be preferably applied to a wind tunnel in which a copper electrode core is used, or a room air conditioning system. In this wind tunnel, or in the room air conditioning system, the EVA core is responsible for the heat exchange.

In order to maintain the cleanliness by utilizing the sterilization characteristics of copper, air conditioner of the room often uses copper eva core. However, microorganisms can also live on the copper EVA core, so that the above-described technology can more effectively maximize the sterilizing effect of the air conditioner EVA core.

Hereinafter, preferred embodiments of the present invention will be described in detail. It should be understood, however, that these examples are for illustrative purpose only and are not to be construed as limiting the scope of the present invention

Example

The current supply was connected to the eva core (heat exchanger) of a wind tunnel which was used for a long period of time, and a 0.5 amp current was applied to the EVA core for 1 second, and the current was periodically applied every 19 minutes. After 5 hours, the degree of the odor was measured, and it was possible to measure that the odor was significantly decreased.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, those skilled in the art will appreciate that such specific embodiments are merely preferred embodiments and that the scope of the present invention is not limited thereby. something to do. It is therefore intended that the scope of the invention be defined by the claims appended hereto and their equivalents.

Claims

And repeatedly flowing 0.1 to 0.5 amperes current to the eva core at intervals of 10 to 19 minutes for 0.1 to 1 second.

delete

The method of claim 1, wherein the eva core is used as a heat exchanger in a wind tunnel.

The method of claim 1, wherein the eva core is used in a room air conditioning system.

The method according to claim 1, wherein the odor is generated by microbial biofilm formation on the surface of the EVA core and metabolism of the microorganism.

The method of claim 7, wherein the microbial cell wall is destroyed to reduce the odor.

The method for reducing odor according to any one of claims 1 to 8, wherein the eva core is made of copper.