KR102355094B1 - Highly efficint sterilzation type removing appatus for fine dust - Google Patents

Abstract

The present invention provides a high-efficiency sterilization type atmospheric fine dust removal device capable of sterilizing harmful bacteria with high efficiency in the process where the outdoor air mixed with environmentally harmful substances such as ultrafine dust, fine dust, carbon dioxide, and nitrogen oxides is forcibly introduced into a purification tank. The present invention comprises: a water tank for purified water provided with a supplemental water pipe and a drain pipe for discharging contaminated water and sediment; a high-performance suction fan for blowing a large amount of outside air into the water tank; an outdoor air inlet pipe for guiding the outdoor air blown in through the high-performance suction fan to be ejected into the purified water of the water tank; a cap for forming an air pocket installed on the outdoor air inlet pipe; a drain/exhaust pipe attached to an upper end of the cap; and a sheath heater consisting of a breakwater plate installed below the cap and installed in the outdoor air inlet pipe in an atmospheric find dust removal device using lime water as purified water.

Description

High Efficiency Sterilization Type Air Fine Dust Removal Device

The present invention relates to a high-efficiency sterilization type atmospheric fine dust removal device capable of efficiently sterilizing harmful bacteria in the process of forcibly introducing outdoor air mixed with environmental harmful substances such as fine dust, carbon dioxide, and nitrogen oxides into a purification water tank.

The present invention is to add a new function to the applicant's earlier application Patent No. 10-2108134.

The previously registered patent states that when lime water is injected into the water tank enough to submerge the lower part of the cap, and external air is blown into the water tank by operating a high-performance suction fan (turbo fan), a large amount of air bubbles are generated in the lime water in the breakwater area at one end. Fine dust and noxious gases are removed, and then the air of the bubbles rising to the surface of the lime water in the cap gathers above the water surface in the cap to form an air pocket, and the fine dust passing through the air pocket is internally with the air pocket It escapes through the connected exhaust pipe, rises as bubbles in the lime water in the tank, and is removed again in the process of explosion.

It is possible because carbon dioxide, a greenhouse gas, can be converted into calcium carbonate or calcium hydrogen carbonate through the calcium hydroxide reaction of limewater.

In the prior art, it is insufficient to sterilize harmful bacteria remaining in the air discharged after removing fine dust by blowing in a large amount with a small sterilizer installed in the exhaust duct.

In addition, there are fine dust removers or air purifiers including Patent Registration No. 10-1773371 to which UV LED for photocatalyst that sterilizes harmful bacteria in the air through the catalytic reaction of ultraviolet light and photocatalyst.

The catalytic reaction of ultraviolet light emitted from the UV LED and photocatalyst is useful for removing and sterilizing indoor fine dust with a very slow flow rate and low flow rate, but high-speed blowing in a large amount of polluted air from the atmosphere and passing it into purified water to remove fine dust It is not suitable for application to atmospheric fine dust removal equipment.

The lower half of the outdoor air inlet pipe is immersed in purified water, so the inside of the pipe is humid. The UV LED panel terminals are exposed to moisture and are easily corroded and have a short lifespan.

(Document 1) Registered Patent No. 10-2108134 (Document 2) Registered Patent No. 10-1773371 (Document 3) Patent Publication No. 10-2011-0090538

The present invention provides a high-efficiency sterilization type atmospheric fine dust removal device that can sterilize harmful bacteria with high efficiency in the process of forcibly introducing outdoor air mixed with environmental harmful substances such as ultrafine dust, fine dust, carbon dioxide, and nitrogen oxides into a water tank for purified water. it is intended to provide

The above object is a water tank for purified water provided with a supplementary water pipe and a drain pipe for discharging contaminated water and sediment, a high-performance suction fan that blows a large amount of outside air into the water tank, and the outside air blown in through the high-performance suction fan is purified water in the tank It consists of an outdoor air inlet pipe guiding it to be ejected into the middle, a cap for forming an air pocket installed on the outdoor air inlet pipe, a drainage/exhaust pipe attached to the upper end of the cap, and a breakwater installed below the cap, and lime water is purified water As an atmospheric fine dust removal device,

It can be implemented as a high-efficiency sterilization type atmospheric fine dust removal device in which a sheath heater is installed in the outdoor air introduction tube.

The sheath heater incinerates combustible fine dust in the atmosphere and sterilizes a large number of harmful bacteria at once.

On the other hand, the temperature of the purified water is unavoidable due to the heat of the sheath heater. If this is neglected, the replenishment frequency of the make-up water increases and purified water is wasted.

Therefore, a cooling water pipe is installed on the outside of the water tank to prevent the purified water from rising above the set temperature due to the heat of the sheath heater.

Combustible fine dust is incinerated by the heat of the sheath heater and is converted into ash with a small specific gravity among the outdoor air blown through the outdoor air inlet pipe, and the removal efficiency is improved compared to non-incineration because it is put into the purified water.

Moreover, since a large amount of various harmful bacteria mixed into the atmosphere is also sterilized, cleaner purified air can be diffused into the atmosphere.

In the sheath heater, the heating wire is located at the inner center of the high heat and corrosion resistance metal tube, and the space around it is filled with an insulating material (magnesia) so that the heating wire is always placed in the center of the metal tube regardless of the radius of curvature, and the cross section of the bent part It is made to have the same roundness as the cross section of this non-bending part, and it is widely used in electric heating devices such as electric rice cookers and instantaneous water heaters.

When the sheath heater is energized at the same time as the outside air is introduced, the inside of the outside air introduction tube is created in a high-temperature atmosphere of 100°C or higher.

Even if a large amount of outside air passes through these high-temperature parts at a fast flow rate, it is sufficient to incinerate organic matter and sterilize harmful bacteria.

If the air is sterilized together with the incineration of organic matter before the air is purified, sterilization that the existing small sterilizer installed at the exhaust port cannot handle can be achieved perfectly.

If you focus on sterilization, the water temperature of the purified water rises more than necessary, and the evaporation amount increases, which increases the replenishment frequency of the make-up water.

In consideration of this, the cooling water pipe installed on the outside of the water tank maintains the water temperature of the purified water at an appropriate level to prevent the water temperature rise and save purified water.

1 is a partial cut-away front view of a device for reducing sterilization power and reducing purified water according to a preferred embodiment of the present invention. FIG. 2 is a configuration diagram of a sheath heater.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings prepared based on preferred embodiments.

1 is a partially cut-away front view of a high-efficiency sterilization type atmospheric fine dust removal device according to an embodiment of the present invention. In this figure, the high-efficiency sterilization type atmospheric fine dust removal device is based on a water tank (1), a high-performance suction fan (2), an outdoor air inlet pipe (3), a cap (4), lime water (5) and a sterilizer (6). do.

The tank 1 has a large capacity suitable for efficiently removing fine dust and harmful gases in the outdoor air with a large inflow per minute, and is for large-capacity purified water.

The water tank 1 is provided with a supplementary water pipe 11 for replenishing lime water and a drain pipe 12 for discharging the precipitated calcium carbonate and the contaminated lime water 5 . The drain pipe 12 is also useful when discharging the precipitated calcium carbonate out of the water tank.

The high-performance suction fan 2 has a very strong suction power of outside air, so that it blows a large amount of outside air in all directions to effectively remove fine dust, ultra-fine dust and carbon dioxide in the atmosphere, and is installed in the center of the water tank 1 It is installed at the front end of the transverse portion (3a) of the giyeok-type blowing pipe (3).

The high-performance suction fan 2 is either a large suction fan or a turbo fan. Considering the weight, operation and installation cost burden, it is desirable to have a turbofan that is compact and can exhibit various performance without any regrets.

The high-performance suction fan (2) is installed in the suction inductor (14) that can suck the outside air in a wide area.

The outdoor air introduction pipe 3 guides the outdoor air blown in by the high-performance suction fan 2 to a place close to the bottom of the water tank 1 to be ejected into the lime water, and is located in the center of the flat surface of the water tank 1 It is installed so that the lower end is close to the bottom of (1).

The cap (4) forms an air pocket in the water tank (1) to limit the level of purified water flowing into the lower end of the cap (4), thereby forming an air pocket ( 9), it is an inverted U-shaped cup that looks like an upside down cup, and is dusted off by the lime water (5) near the lower end of the outdoor air inlet pipe (3) from the outside air ejected to the lower end of the outdoor air inlet pipe (3) and rises. It is suitable for trapping flue gases.

The lime water 5 is purified water that removes harmful substances such as ultra-fine dust and fine dust in the outdoor air. When carbon dioxide mixed with external air is mixed with lime water (5), it is converted into calcium carbonate or calcium hydrogen carbonate.

The sterilizer 6 is installed in the exhaust duct 7 , and sterilizes the exhaust gas collected in the space above the water surface of the lime water 5 in the process of being discharged to the exhaust duct 7 . Depending on the type of the sterilizer 6, the ultrafine dust that is not even filtered may be incinerated. If it is, the odor mixed in the exhaust is also burned and deodorized.

In such a device for removing atmospheric fine dust, in the present invention, a sheath heater 20 is built in the outside air introduction pipe 3 , and a cooling water pipe 30 is additionally installed on the outside of the water tank 1 .

The sheath heater 20, which is a kind of electric heater, sterilizes harmful bacteria contained in the outdoor air entering the outdoor air inlet pipe 3 with its heat, and at the same time incinerates combustible fine dust mixed with the outdoor air to lower the specific gravity, thereby increasing the removal rate by purified water. suitable for

Since the sheath heater 20 is a stainless steel tube, it does not corrode even if it is built in the humid outdoor air introduction tube 3, so the mechanical lifespan is long enough to be comparable to a photocatalytic UV LED. By checking the heating temperature of the sheath heater 20 with the built-in temperature sensor 21, if the set heating temperature is overheated above the upper limit, the power is cut off, and if it drops to the lower limit, it is energized and reheated.

A cooling water pipe 30 is installed on the outside of the water tank 1 . This cooling water pipe 30 saves water by preventing excessive evaporation of purified water by maintaining the purified water in the water tank 1 at an appropriate temperature even with the heat of the sheath heater 20, and reducing the moisture content of the clean air flowing out through the exhaust pipe 7 In order not to cause an exhaust disturbance phenomenon.

A water temperature sensor 33 is installed in the water tank 1 where it is placed under the surface of the purified water, and the water temperature sensor 33 is operated outside the water tank 1 according to the detection signal of the water temperature sensor 33 to supply the cooling water in the cooling water tank 32 to the cooling water pipe. A circulation pump (31) for circulating to (30) is provided.

As a result of testing with a pilot facility, it was found that it is desirable to set the water temperature sensing range of the water temperature sensor 33 to 2 to 5° C. in order to prevent freezing and to minimize evaporation of purified water.

Reference numeral 34 indicates an On/Off switch that operates and stops the circulation pump 31 in response to the water temperature sensor 33 .

In FIG. 2 , the sheath heater 20 may include a plurality of heater units H1 , H2 , and H3 . The heating temperature of the sheath heater 20 is detected by the temperature sensor 21, and when the heating temperature reaches the upper limit, the thermostat (THT) is turned off to cut off the sheath heater (20), and when the heating temperature reaches the lower limit, the thermostat (THT) is turned off. ) is turned on to energize the sheath heater 20 to reheat. The thermostat (THT) is a configuration necessary for overheating prevention and power saving of the sheath heater 20 .

In FIG. 1, when lime water (5) enough to submerge the lower part of the cap (4) is injected, and external air is blown into the water tank (1) by operating the high-performance suction fan (2) and the sheath heater (20), in the atmosphere After the mixed harmful bacteria are sterilized and combustible fine dust is burned, it enters into the lime water in the area of the breakwater 10, and bubbles are generated and aerated to remove ultrafine dust, fine dust, ash, and carbon dioxide, and then the bubbles are ) of the lime water (5a) in the surface, the water droplets bounce off as they burst, and the air gathers above the water surface of the lime water (5a) in the cap (4) to form an air pocket (9).

The water droplets falling on the ceiling of the cap (4) and those falling without touching the cap (4) are mixed with the lime water (5a), and in the process, ultrafine dust, fine dust, ash, and carbon dioxide are removed.

The minute fine dust, fine dust, and carbon dioxide collected in the air pocket 9 are removed even in the process of surfacing and exploding in the lime water 5b of the water tank 1 by swirling the lower end of the cap 4 .

The purified and sterilized clean air floating above the lime water 5b is diffused into the atmosphere through the exhaust duct 7, and the carbon dioxide contained in the outside air is removed through calcium carbonate or hydrogen carbonate calcium formation by the calcium hydroxide of the lime water, and calcium carbonate Alternatively, calcium bicarbonate settles to the bottom of the tank.

In this process, when the sheath heater 20 reaches the upper limit set temperature, the temperature sensor 21 that detects the fact turns off the thermostat (TST) to cut off the power, and when the sheath heater 20 drops to the lower limit set temperature The thermostat (TST) is turned on to energize the sheath heater (20).

On the other hand, when the water temperature rises above the set value due to heat generated by the sheath heater 20, the circulation pump 31 operates according to the detection signal of the water temperature sensor 33 that senses this to circulate the cooling water through the cooling water pipe 30. lower the water temperature When the water temperature reaches the lower limit, the water temperature sensor 33 detects the fact and stops the circulation pump 31 .

As described above, in the present invention, in removing outdoor air using lime water in the water tank, the sheath heater in the outdoor air inlet pipe incinerates combustible fine dust, etc. It can effectively sterilize harmful bacteria.

In addition, the cold water pipe can suppress evaporation by preventing the rise in the water temperature of lime water at an excessively high temperature under the influence of the sheath heater, so the water saving effect obtained by reducing the replenishment frequency of replenishment water is also great.

1: Tank 2: Suction fan
3: Outside air intake tube 4: Gad
5,5a,5b: lime water 9: air pocket
10: break plate 20: sheath heater
21: temperature sensor 30: cooling water pipe
31: circulation pump 33: water temperature sensor
TST: Thermostat

Claims (3)

A water tank for purified water provided with a supplemental water pipe and a drain pipe for discharging contaminated water and sediment, a high-performance suction fan that blows a large amount of outside air into the tank, and a high-performance suction fan to induce the outside air blown into the purified water of the tank It consists of an outdoor air inlet pipe, a cap for forming an air pocket installed on the outdoor air inlet pipe, a drainage/exhaust pipe attached to the upper end of the cap, and a breakwater installed below the cap, and lime water is used as purified water, and the As an atmospheric fine dust removal device in which a sheath heater is installed in the outside air inlet pipe,
A high-efficiency sterilization type atmospheric fine dust removal device, characterized in that it is configured to control the heating temperature of the sheath heater with a thermostat that turns ON/OFF in response to a temperature sensor.
The high-efficiency sterilization type atmospheric fine dust removal device according to claim 1, wherein a cooling water pipe is installed on the outside of the water tank, and a water temperature of purified water is sensed by a water temperature sensor installed in the water tank, and the cooling water is circulated in the cooling water pipe with a circulation pump. .
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