KR20120058075A - carbon dioxide decreasing apparatus - Google Patents

Abstract

PURPOSE: An apparatus for reducing carbon dioxide is provided to eliminate fine dust in addition to carbon dioxide by including a filtering part composed of a pre-filter, a first absorbing filter, a second absorbing filter, and a high-efficiency particulate air(HEPA) filter. CONSTITUTION: An apparatus for reducing carbon dioxide includes a main body(100), a carbon dioxide sensor(160), a pre-filter, a first absorbing filter, a second absorbing filter, and a HEPA filter. The main body includes a filtering part and a fan. The filtering part absorbs carbon dioxide from air. The fan sucks external air. The carbon dioxide sensor measures the concentration of carbon dioxide by being installed at an indoor part. A controlling part controls the operation of the fan. The pre-filter eliminates dust. The absorbing filters absorb carbon dioxide. The HEPA filter eliminates fine dust. The pre-filter, the absorbing filters, and the HEPA filter are stacked.

Description

Carbon dioxide reducing apparatus

The present invention relates to a carbon dioxide reduction device, and more particularly, to a carbon dioxide reduction device capable of providing comfortable air by increasing a carbon dioxide reduction rate and removing fine dust by providing a filter of a physical type and a chemical type.

In general, carbon dioxide is a gas that is naturally generated by breathing activities of plants and animals or is generated as a by-product through the combustion process of materials. In recent years, carbon dioxide is increasing due to the increase in the number of people and the use of coal and petroleum.

As the carbon dioxide increases, the biggest problem is global warming, which causes the temperature of the earth to rise by preventing carbon dioxide from radiating out of the earth (earth radiant heat), which causes the glaciers to melt or become unusual in many parts of the world. Other abnormal climate events are taking place.

In addition, when the carbon dioxide concentration increases in the indoor space, adverse effects such as headache, drowsiness, drowsiness, and decreased concentration appear to people in the indoor space, and ventilation is essential in the indoor space.

However, in a crowded indoor space, it is impossible to match the ventilation capacity, so that the concentration of carbon dioxide in the room increases rapidly. In addition, there is a fear that excessive heating and heating energy is consumed in summer and winter when ventilation is continuously performed to prevent this.

Thus, in order to solve this problem, the technology described in Patent No. 10-0856709 as shown in Figure 1 was developed, the technical feature of the air purifier 11 for removing carbon dioxide and harmful gases, indoors An air intake 18 for sucking contaminated air of the air, an air intake fan 14 for inhaling indoor contaminated air through the air intake 18, and an air intake air included by the air intake fan 14. Carbon dioxide and noxious gas removal filter (16) and the filter (16) produced by embedding a medicine prepared by mixing titanium oxide, nickel, and zeolite powder in a box free of air circulation in order to decompose and adsorb and remove carbon dioxide and noxious gas. ) Decomposes and removes carbon dioxide and harmful gases by the high temperature generated when ultraviolet rays reflect from the surface of titanium oxide mixed in UV lamp), a heater 15 for heating the air to inject hot air into the medicine built in the filter to remove and remove the carbon dioxide and harmful gas adsorbed to the filter 16, the air purifier 11 It characterized in that the device control unit consisting of a control board with a built-in memory and electronic control circuit and a microprocessor and a control program to control the automatic control or manual control.

By the way, the technology described in the Patent No. 10-0856709 has the advantage that can reduce the carbon dioxide even if not separately ventilated, but the filter configuration is formed by simply mixing titanium oxide, nickel and zeolite powder to reduce the carbon dioxide efficiency There is a problem falling.

In addition, there is no configuration that can reduce the fine dust generated in the zeolite in the process of adsorbing carbon dioxide, there is a problem that can increase the concentration of fine dust, and the filter is always in contact with the outside air of the filter There is a problem that the life is reduced.

The present invention has been made to solve the above problems, an object of the present invention is a first filter and a second adsorption filter for adsorbing carbon dioxide and a pre-filter for removing dust of a predetermined size or more; It is to provide a carbon dioxide reduction apparatus that can remove not only carbon dioxide but also fine dust by providing a HEPA filter for removing fine dust to provide more comfortable air.

Another object of the present invention is that the first adsorption filter is formed of a hydroxide adsorbent so as to adsorb carbon dioxide by chemical action, and the second adsorption filter is formed of zeolite to adsorb carbon dioxide by physical action. It is to provide a carbon dioxide reduction device that can increase the reduction rate of the.

In addition, another object of the present invention is to form a blocking portion between the first adsorption filter and the pre-filter, the second adsorption filter and the HEPA filter to prevent contact with the outside air by blocking the blocking portion when the filter is not in use. In addition to extending the life of the filter, the first adsorption filter and the second adsorption filter to form a cartridge to provide a carbon dioxide reduction device that is easy to replace.

The present invention for solving this problem;

Characterized in that the body is provided with a filter unit, and a carbon dioxide sensor installed in the room to measure the carbon dioxide concentration.

Here, the main body is characterized in that it comprises a fan for sucking outside air, a filter unit for adsorbing carbon dioxide in the air, and a control unit for controlling the driving of the fan.

In addition, the filter unit provided in the main body includes a pre-filter for removing dust, a first adsorption filter and a second adsorption filter for adsorbing carbon dioxide, and a HEPA filter for removing fine dust. Characterized in that it is made.

At this time, the first adsorption filter is characterized in that consisting of a hydroxide adsorbent.

And, the second adsorption filter is characterized in that made of zeolite.

On the other hand, it is characterized in that the blocking portion is formed between the first adsorption filter and the pre-filter, the second adsorption filter and the HEPA filter.

In addition, an air supply part is formed on a lower surface of the main body, an exhaust part is formed on a side surface, and each of the air supply part and the exhaust part is provided with a dust sensor.

Here, the air supply unit is characterized in that the carbon dioxide sensor is further provided.

In addition, the zeolite is supported on an organic solvent in which the hydroxide is dispersed, and then dried at a temperature of 150 ° C. to 200 ° C. for 6 hours.

On the other hand, the carbon dioxide sensor is characterized in that it is arranged dispersed in the room.

According to the present invention of the above configuration, the filter unit pre-filter (Pre filter) for removing the dust of a predetermined size or more, the first adsorption filter for adsorbing carbon dioxide and the second adsorption filter and HEPA filter for removing fine dust (HEPA filter) ) Can remove not only carbon dioxide but also fine dust, thereby providing more comfortable air.

In addition, the first adsorption filter is formed of a hydroxide adsorbent to adsorb carbon dioxide by chemical action, and the second adsorption filter is formed of zeolite to adsorb carbon dioxide by physical action, thereby reducing the carbon dioxide reduction rate. It can increase the effect.

In addition, the present invention forms a blocking portion between the first adsorption filter and the pre-filter, the second adsorption filter and the HEPA filter to block the blocking portion when the filter is not in use, thereby preventing the outside air from contacting the filter, thereby extending the life of the filter. In addition to increasing, the first and second adsorption filters and the second adsorption filter in the form of a cartridge can be easily replaced.

1 is a conceptual diagram of a conventional air purifying apparatus for removing carbon dioxide.
2 is a conceptual diagram in which the carbon dioxide reduction device according to the present invention is installed indoors.
3 is a conceptual diagram of a main body of a carbon dioxide reduction device according to the present invention.
4 is a graph showing the distribution of carbon dioxide in the indoor space.
5 is a graph showing carbon dioxide adsorption performance of modified zeolites.
6 is a graph showing the carbon dioxide removal rate of the modified zeolite.
7 is a conceptual diagram of a blocking unit of the filter unit of the carbon dioxide reduction device according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. The same reference numerals are used for the same constituent elements in the drawings and redundant explanations for the same constituent elements are omitted. It is to be understood that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

2 is a conceptual diagram of a carbon dioxide reduction device according to the present invention installed in a room, FIG. 3 is a conceptual view of a main body of a carbon dioxide reduction device according to the present invention, FIG. 4 is a graph showing the distribution of carbon dioxide in an indoor space, and FIG. 6 is a graph showing the carbon dioxide adsorption performance of the modified zeolite, Figure 6 is a graph showing the carbon dioxide removal rate of the modified zeolite, Figure 7 is a conceptual diagram of the blocking portion of the filter unit of the carbon dioxide reduction device according to the present invention.

The present invention relates to a carbon dioxide reduction device that can be installed indoors to reduce the carbon dioxide without additional ventilation as shown in Figures 2 and 3, the configuration is the main body 100 is provided with a filter unit 150 therein And installed at various locations in the room consists of a carbon dioxide sensor 160 for measuring the carbon dioxide concentration.

Here, the main body 100 is installed in the center and the upper portion of the indoor space, which is measured as the carbon dioxide concentration of the upper portion than the lower portion of the indoor space as shown in Figure 4, the upper portion of the carbon dioxide concentration of the center than the edge Since the high is measured by installing the main body 100 in the center of the upper portion of the indoor space where a large amount of carbon dioxide is distributed it is possible to reduce the carbon dioxide more quickly.

In addition, the carbon dioxide sensor 160 is distributed and installed at various locations in the room to measure the carbon dioxide concentration at each location, and the measured carbon dioxide concentration is transmitted to the controller 130 provided inside the main body 100. .

Thus, the controller 130 compares the transmitted carbon dioxide concentration with a set reference concentration (the standard value of the normal indoor carbon dioxide concentration is 1000 ppm), and when a portion having a high concentration of the transmitted carbon dioxide is generated, the controller 130 is provided inside the main body 100. By operating the fan 140 to suck outside air to adsorb carbon dioxide in the filter unit 150 to reduce the concentration of carbon dioxide in the room.

On the other hand, when the concentration of carbon dioxide transmitted in real time from the carbon dioxide sensor 160 is lowered again below the reference value, the controller 130 stops the operation of the carbon dioxide reduction device.

In addition, the filter unit 150 provided in the main body 100 may include a prefilter (152), a first adsorption filter (154), a second adsorption filter (156), and a HEPA filter (158). ) Is sequentially stacked, and the prefilter 152 is composed of a filter for filtering general dust to remove dust over a certain size.

Therefore, the dust of the second adsorption filter 156 made of zeolite to be described later prevents the dust of a predetermined size or more from being blocked, thereby increasing the carbon dioxide adsorption power of the second adsorption filter 156.

The first adsorption filter 154 and the second adsorption filter 156 adsorb carbon dioxide. The first adsorption filter 154 adsorbs carbon dioxide in a chemical manner, and the second adsorption filter 156. Since the carbon dioxide is adsorbed in a physical manner, the carbon dioxide is adsorbed in a physical and chemical manner, thereby effectively reducing the carbon dioxide.

Here, the first adsorption filter 154 is made of an alkali metal hydroxide (lithium hydroxide, potassium hydroxide, sodium hydroxide, etc.) adsorbent to adsorb carbon dioxide by chemical reaction with carbon dioxide by adsorbing carbon dioxide.

In addition, the second adsorption filter 156 uses zeolite to adsorb carbon dioxide in a physical manner in which carbon dioxide is adsorbed to micropores formed on the surface of the zeolite.

At this time, the zeolite may use a zeolite which is commonly used, but by using a modified zeolite to increase the adsorption power of carbon dioxide.

Here, the modified zeolite is formed by supporting zeolite in a suspension in which an alkali metal hydroxide (lithium hydroxide, potassium hydroxide, sodium hydroxide, etc.) is physically and evenly dispersed in an organic solvent (toluene, benzene, methanol, or a mixed solvent thereof). Done.

In this case, the mixing ratio of the alkali metal hydroxide and the physical carbon dioxide adsorbent (zeolite) is preferably 1: 0.5 to 1 because a sufficient amount of the metal hydroxide can penetrate into the pore of the zeolite, and the amount of the organic solvent is the sum of the two components. The amount of organic solvent is preferably 2 to 3 ml per g, because if the amount of the organic solvent is too small, the adsorbent is not sufficiently submerged in the solvent.

On the other hand, the solubility of the hydroxide in the organic solvent is very low, it is important to ensure that the hydroxide can be evenly dispersed in the organic solvent as possible.

Therefore, the mixing allows the hydroxide to be well adsorbed to the physical adsorbent while allowing the hydroxide to be evenly dispersed in the organic solvent in the presence of more than 0 to 1 parts by weight of surfactant relative to 100 parts by weight of the organic solvent.

In this way, when the zeolite is supported on the suspension, the zeolite has a property of adsorbing the organic solvent very well, so that the organic solvent is quickly adsorbed into the pores of the zeolite, and the hydroxide evenly dispersed in the organic solvent is also adsorbed together. do.

When the zeolite supported on the suspension is dried at a temperature of 150 ° C. to 200 ° C. for a predetermined time (6 hours or more), all the organic solvents adsorbed to the pores of the zeolite are evaporated and only the hydroxide remains.

At this time, when the drying temperature is less than 150 ℃ takes too much time for the evaporation of the organic solvent, if it exceeds 200 ℃ tends to weaken the bond of the zeolite and hydroxide by the carbonization of the surfactant.

Hereinafter, the modified zeolite will be described in more detail with reference to Examples, but the scope of the present invention is not limited to the following Examples.

Example 1

Dissolve 100 g of lithium hydroxide and 1 g of anionic surfactant (Aldrich, sodium dodecyl sulfate:) in 200 ml of toluene, and add 100 g of a solid granular zeolite having a diameter of 2 to 5 mm to add the hydroxide to the zeolite. Supported by Then, the carbon dioxide adsorbent of the present invention was prepared by drying at about 170 ° C. for about 6 hours.

The modified zeolite thus formed has a superior carbon dioxide adsorption capacity than conventional zeolite, which is initially reduced when using a conventional zeolite and hydroxide as shown in FIG. While carbon dioxide is reduced (desorbed) again to increase the concentration of carbon dioxide, the modified zeolite continuously decreases the concentration of carbon dioxide over time, and carbon dioxide is not reduced (desorbed) again over time. It is possible to adsorb carbon dioxide stably. That is, it can be seen that the modified zeolite shows superior adsorption performance than when using the conventional hydroxide and zeolite, respectively.

Examples 2 to 3

In Example 1, the surfactant is a cationic surfactant (cetyltrimethylammonium bromide (CTABr (Example 2)) and a nonionic surfactant (Triton X-114: Example 3) from anionic surfactant (sodium dodecyl sulfate (SDS)) The same procedure was followed except for changing to. The removal rate of CO _{2 over} time is shown in FIG. 6. It was confirmed from FIG. 6 that the removal rate of CO ₂ of the anionic surfactant was excellent.

In the process of adsorbing carbon dioxide using a hydroxide adsorbent in the first adsorption filter 154, a strong basic irritant odor may be generated by a chemical reaction of carbon dioxide and hydroxide, and the second adsorption filter 156 may be modified. By using a zeolite, the irritating odor can be stably adsorbed.

In addition, the first and second adsorption filters 154 and 156 may be formed in the form of a cartridge, and may be replaced with new filters when they reach the end of their lifespan. The adsorbed carbon dioxide can be removed and reused to minimize waste of resources.

In addition, a HEPA filter 158 is installed at an upper end of the filter unit 150. The HEPA filter 158 is fine dust and contaminants that are not removed from the prefilter 152, and the second adsorption filter ( In 156, it is possible to supply more pleasant air to the room by removing fine dust that may occur in the process of adsorbing carbon dioxide.

Meanwhile, blocking parts 153 and 157 are formed between the first adsorption filter 154 and the prefilter 152, and the second adsorption filter 156 and the HEPA filter 158, and the blocking parts 153 and 157 are illustrated in FIG. 7. As shown in the figure consists of a fixed panel (153a, 157a) fixed to the inside of the filter unit 150 and the movable panel (153b, 157b) formed to be movable below the fixed panel (153a, 157a).

In addition, through holes 153c, 157c, 153d, and 157d are formed in the fixed panels 153a and 157a and the movable panels 153b and 157b, and the fixed panels 153a and 157a are moved in accordance with the movement of the movable panels 153b and 157b. ) Through holes 153c and 157c and through holes 153d and 157d of moving panels 153b and 157b are communicated with each other or blocked.

Thus, when the carbon dioxide reduction device of the present invention is operating, the through holes 153c, 157c, 153d, and 157d communicate with each other by the control of the controller 130 to maintain the open state, and when the operation stops, the controller 130 By moving the control panel (153b, 157b) by the control of the block to maintain the closed state by blocking the through holes (153c, 157c, 153d, 157d).

By blocking the blocking parts 153 and 157 as described above, the outside air and the first and second adsorption filters 154 and 156 are prevented from contacting each other, thereby extending the life of the first and second adsorption filters 154 and 156.

Meanwhile, an air supply unit 110 is formed on a lower surface of the main body 100, and an exhaust unit 120 is formed on both sides of the main body 100, and dust sensors 112 and 122 are respectively provided on the air supply unit 110 and the exhaust unit 120. Is formed.

Thus, by comparing the concentration of dust measured by the dust sensor 112 of the air supply unit 110 and the concentration of dust measured by the dust sensor 122 of the exhaust unit 120, the dust concentration of the air supply unit 110 is compared. If the measurement is high, it is determined that the normal operation, and if the dust concentration of the exhaust unit 120 is measured high, it is determined that the filter unit 150 is abnormal, and the controller 130 stops the operation of the carbon dioxide reduction device of the present invention and The warning light (not shown) installed on the lower surface of the 100 is turned on to inform the user that there is an error.

On the other hand, the air supply unit 110 is further provided with a carbon dioxide sensor 114 to more precisely measure the concentration of carbon dioxide in each part of the indoor space to maintain the indoor carbon dioxide concentration below the appropriate value.

Hereinafter, the operation relationship of the carbon dioxide reduction device of the present invention described above, in the carbon dioxide sensor 160 installed in each part of the indoor space to measure the carbon dioxide concentration of each part to the controller 130 formed in the main body 100 in real time. When the concentration of the transmitted carbon dioxide is higher than the reference value, the controller 130 operates the fan 140 installed inside the main body 100 so that the concentration of the transmitted carbon dioxide is higher than the reference value. The air is sucked in to filter carbon dioxide from the filter unit 150.

In this case, the filter unit 150 may include a pre-filter 152, a first adsorption filter 154, a second adsorption filter 156, a HEPA filter 158, and the first adsorption filter 154. ) And the preliminary filter 152, the second adsorption filter 156 and the hepatic filter 158 formed between the blocking portion (153, 157), the control unit 130 is suctioned by opening the blocking portion (153, 157) Carbon dioxide is adsorbed by bringing the external air into contact with the first adsorption filter 154 and the second adsorption filter 156.

At this time, the concentration of dust measured by the dust sensor 112 of the air supply unit 110 formed on the lower surface of the main body 100 and measured at the remote line 122 of the exhaust unit 120 formed on both sides of the main body 100. If the concentration of the dust is measured in the air supply unit 110 by comparing the concentration of the dust is determined to be normal operation, and the concentration of the dust measured in the exhaust unit 120 is high filter unit 150 It is determined that there is an error in the carbon dioxide reduction device is stopped, and the warning lamp (not shown) formed on the lower surface of the main body 100 is turned on.

Although the preferred embodiments of the present invention have been described above, the scope of the present invention is not limited thereto, and the scope of the present invention extends to the scope of the present invention to those which are substantially equivalent to the embodiments of the present invention. Various modifications can be made by those skilled in the art without departing from the scope of the present invention.

The present invention relates to a carbon dioxide reduction device, and more particularly, to a carbon dioxide reduction device capable of providing comfortable air by increasing a carbon dioxide reduction rate and removing fine dust by providing a filter of a physical type and a chemical type.

100: main body 110: air supply
112,122 Dust sensor 114,160 Carbon dioxide sensor
120: exhaust unit 130: control unit
140: fan 150: filter unit
152: pre-filter 154: first adsorption filter
153,157: blocking part 153a, 157a: fixed panel
153b, 157b: Mobile panel 153c, 157c, 153d, 157d: Through hole
156: second adsorption filter 158: hepa filter
170: warning light

Claims (10)

A main body provided with a filter unit,
Carbon dioxide reduction device, characterized in that consisting of a carbon dioxide sensor installed in the room to measure the carbon dioxide concentration.
The method of claim 1,
The main body and the fan for sucking the outside air,
A filter unit for adsorbing carbon dioxide in the air,
Carbon dioxide reduction device comprising a control unit for controlling the drive of the fan.
The method according to claim 1 or 2,
The filter unit provided in the main body and a pre-filter (Pre filter) for removing dust,
A first adsorption filter and a second adsorption filter for adsorbing carbon dioxide,
Carbon dioxide reduction device, characterized in that the HEPA filter (fine dust) is removed is laminated.
The method of claim 3,
The first adsorption filter is a carbon dioxide reduction device, characterized in that consisting of a hydroxide adsorbent.
The method of claim 3,
The second adsorption filter is a carbon dioxide reduction device, characterized in that made of zeolite.
The method of claim 3,
Carbon dioxide reduction device, characterized in that the blocking portion is formed between the first adsorption filter and the pre-filter, the second adsorption filter and the HEPA filter.
The method according to claim 1 or 2,
An air supply unit is formed on the lower surface of the main body,
The exhaust part is formed on the side,
Carbon dioxide reduction device, characterized in that each of the air supply and the exhaust unit is provided with a dust sensor.
The method of claim 7, wherein
Carbon dioxide reduction device, characterized in that the air supply is further provided with a carbon dioxide sensor.
The method of claim 5,
The zeolite is supported on an organic solvent in which the hydroxide is dispersed, and then carbon dioxide reduction device, characterized in that the drying for 6 hours at 150 ℃ ~ 200 ℃ temperature.
The method of claim 1,
The carbon dioxide sensor is a carbon dioxide reduction device, characterized in that the dispersed arrangement in the room.

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