JPH0242981Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Industrial field of application) This invention is aimed at adsorbing and decomposing NOX indoors to render it harmless, and belongs to the industrial field of manufacturing and selling air conditioners.

(Prior Art) Conventionally, it has been common practice to set a filter for removing solids from intake air on the intake side of heating and cooling equipment.

(Problems to be solved through innovation) Filters used on the intake side of air-conditioning equipment conventionally used for home use are for removing dust, so NOX mixed in the intake air passes through as is. Therefore, the NOX concentration remained unchanged even after long-term use.

(Means for solving the problem) However, this idea focuses on the function of grass rush to contribute to the oxidation and denitrification of biological NOX (experimental report by Mr. Nishimura of the University of Tokyo), and uses a filter made of rush grass in air-conditioning equipment. NOx in indoor air can be reduced by installing it in the intake or exhaust part (indoor circulation type).
They succeeded in reducing the concentration.

That is, in this invention, a straw filter is provided in the intake or exhaust part of the air conditioner case to construct an air conditioner with NOX removal ability. The strawberry filter of this invention is made by packing cut or torn strawberries in a breathable packaging material, or by processing strawberry fibers into a sheet-shaped filter, or by filling a breathable case with broken strawberries. Various forms are possible, such as objects. In any case, the condition is that air can pass through easily and that it can come into contact with NOX gas over a relatively wide area.

The rush fiber filter may be, for example, a paper-like molded product, a non-woven fabric-like molded product, or a felt-like molded product. In addition, as a breathable case for putting broken strawberries, for example, between two ventilation plates with many small holes (or small slits arranged in parallel),
A structure in which broken straw grass is loosely filled and the periphery of the ventilation plate is sealed is considered.

Next, there are two ways to set the filter of this invention in air-conditioning equipment: one is to set it inside the casing of the air-conditioning equipment when it is manufactured at a factory, and the other is to set it removably outside the casing of the air-conditioning equipment. The former is difficult to modify existing heating and cooling equipment, but the latter can not only be removably installed in existing heating and cooling equipment, but also periodically replaced to maintain functionality. Of course, the former is also possible when it comes to replacing the filter.

The strawberry filter in this invention biologically oxidizes and denitrifies NOX, so it requires a moderate level of humidity.However, in normal living spaces, it has a moderate level of humidity, and humidity control for air-conditioning equipment. You can also use this function to supply water to the filter.

The rush filter is installed on the entire surface or a part of the intake or exhaust section of air conditioning equipment, and especially when attached to existing air conditioning equipment, it is necessary to take into consideration the increase in air resistance. For example, set the filter at 1/2 to 1/3 of the intake area, or
The air intake area of the filter itself is made larger than 1.5 times the intake area of the device to reduce air flow resistance.

Note that the filter area can be determined by calculating from the amount of indoor air passing through the filter that enters the air conditioning equipment. For example, it is sufficient to pass once every 24 hours.

The NOX reduction effect of the strawberry filter is as follows:
Since it is a biological oxidation and denitrification process, there is no risk of secondary pollution even if used for a long time, and there is no risk of adverse effects on the human body.

In addition, if dust adheres to the filter, its function can be restored by proper cleaning, so it can be used for a long time (for example, more than one year), and it can be supplied at a relatively low cost, so it is not a financial burden. That's not it.

(Effect of the invention) According to this invention, since a straw filter is attached to the intake or exhaust part of the air conditioning equipment, NOX in the passing air can be reduced. Denitrification is approximately proportional to the biological environment and the area of contact between grass and air.

(Example 1) A straw filter 2 was installed on the intake side of the air conditioner 1 to constitute the air conditioner A of this invention. The strawberry filter 2 is a synthetic resin rectangular case 3 that is loosely filled with broken strawberries 4, and the front and rear wall plates 5, 6 of the rectangular case 3 are provided with a large number of ventilation holes 7, 8 ( For example, diameter 5mm to 10mm or gap 5mm
slits are arranged in parallel), and a net 9 is stretched on the exhaust side. In the figure, 10 is an exhaust section.

In the embodiment, when the air conditioner 1 is started,
Indoor air is taken in as shown by arrow 11, denitrified by the straw filter 2, cooled, and discharged into the room from the exhaust section 10 as shown by arrow 12. Therefore,
NOX is reduced during indoor air circulation.

(Example 2) Next, FIG. 3 shows a rush filter 13. That is, a sheet 14 made of rush fibers
is stretched over the frame 15. Such a filter is used by being installed in a conventionally known ventilation fan or other intake or exhaust section.

(Embodiment 3) Further, in the embodiment shown in FIG. 4, a fiber board 16 is formed by pressure-forming rush fibers to a predetermined thickness (for example, about 3 mm). This fiberboard 16 is used by being attached to an intake section or an exhaust section of an air conditioner.

(Embodiment 4) Next, the embodiment shown in FIG. 5 shows a case where the present invention is applied to a central heating and cooling system.

In this embodiment, the case where the parent device 17 is installed in the strawberry filter case 18, and the case where the child device 19 is installed
In some cases, a filter case 20 is installed.
The former is a case where air is sucked in by the main device 17 and cooled or heated air is blown out from the child device 19, and the latter is a case where the main device 1 is used to blow out cooled or heated air.
Send the refrigerating medium adjusted in step 7 to the slave unit 19,
This is the case when heat exchange is performed.

In the embodiments described above, the filter cases are both of the externally installed type, but they can of course be of the internally installed type, and can also be of the cartridge type and replaced periodically.

Note that the moisture generated during heat exchange can be used as the moisture added to the rush grass in the filter case.

(Effects of the invention) According to this invention, since the grass filter is provided in the intake or exhaust part of the air conditioner, part or all of the air passing through the air conditioner passes through the grass filter, and the air contained in the air passes through the grass filter. This has the effect of removing (decomposing) all or part of the NOX that is produced. Therefore, NOX in the indoor air is automatically reduced, and a good environment can be achieved without any special effort.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the invention, FIG. 2 is an enlarged partial cross-sectional view, FIG. 3 is a partial cross-sectional perspective view of an embodiment of the filter, and FIG. 4 is a perspective view of another embodiment. A perspective view, FIG. 5 is a perspective view of an embodiment of a central heating and cooling system. 1... air conditioner, 2... strawberry filter, A...
Air conditioner, 4...cutted strawberry, 10...exhaust section.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. Air-conditioning and heating equipment with NOX removal ability, which is provided with a grass filter in the intake or exhaust part of the air-conditioning/heating machine. 2. The air-conditioning device with NOX removal ability as set forth in claim 1, wherein the strawberry filter is a filter made of packaged strawberry, which is made by wrapping broken pieces of strawberry in an air-permeable packaging material, or a filter made of a processed strawberry product. 3. The breathable packaging material is net, woven fabric, non-woven fabric, or paper as described in item 2 of the utility model registration claim.
Air conditioning equipment with NOX removal ability. 4. The filter made of a processed product of strawberry is a laminate of strawberry fibers as described in claim 2 of the utility model registration claim.
Air conditioning equipment with NOX removal ability.