JP2512116Y2 - Decontamination device for duct air conditioning equipment - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cleaning the inside of an air conditioner of a duct air conditioner and the duct by using an air flow.

[0002]

2. Description of the Related Art A so-called duct air conditioning system is generally used in office buildings and factories, in which a central air conditioner is provided with an air supply duct at the air outlet of each room to supply conditioned air. Return air (return air) and outside air from each room are introduced into the air conditioner, and the temperature and humidity of the air are adjusted by a filter and heat exchanger inside the machine and sent to the air outlet of each room through a duct.

In the air conditioning technology for forming a comfortable environment, the problem of deterioration of air quality has recently been pointed out. Taking offices as an example, gases and dust generated from indoor pollution sources (human body, copy machine, various OA equipments, smoking, etc.) are circulated through return air, and polluted outside air is introduced. As a result, the air quality of the supply air may also deteriorate. This is even more so because there are more sources of pollution in factories.

Particularly, in duct air conditioning, these pollutants adhere to the inner wall of the duct and the inside of the air conditioner to permanently deteriorate the air quality. For example, the generation of odors and the reproduction of bacteria also occur.

For this reason, although measures have been taken to improve the performance of the filter and to regenerate and replace it, the effect on the gas components and sterilization is small.

[0006]

[Problems to be Solved by the Invention] When odor-producing substances (organic substances) and bacteria adhere to the inner wall of the duct and the inside of the air conditioner, and have an adverse effect on the environment, it is necessary to perform cleaning. However, cleaning the inside of the duct once installed cannot be done easily. For this reason, cleaning robots have appeared, but there is a limit to this. The present invention aims to solve this problem.

[0007]

DISCLOSURE OF THE INVENTION The present invention relates to a duct air-conditioning system for sending air treated by an air conditioner to an air outlet of each room through a duct, and to an intake air passage to the air conditioner. An ozone generator is installed, and an ozone adsorber or an ozone decomposer can be attached / detached to / from the air outlet surface of each air outlet.
Installed in the Noh, and perform deodorizing operation for disinfection when the air conditioning operation is stopped.
Disclosed is a duct air-conditioning facility disinfecting and deodorizing device.

[0008]

[Operation] The deodorizing power and sterilizing power of ozone are already known.
That is, many substances that generate odors are aromatic compounds, but ozone has a deodorizing ability because it has a property of decomposing into unsaturated compounds having a carbon ring or double or triple bonds of aromatic compounds. In addition, ozone has a bactericidal ability because it can damage cell membranes of organisms and destroy proteins. An appropriate ozone concentration is required to obtain this effect, but it is said to be at least 5 ppm. Usually used at several hundred ppm.

Ozone is harmful to the human body, and ASHRAE STA
NDARD 62-1982 specifies 0.05 ppm as a guideline for indoor sources.

In the present invention, the ozone generator installed in the air intake passage of the air conditioner allows air having an ozone concentration of about several hundred ppm or higher to pass through the inside of the machine and the duct. That is, the ozone generator is operated while the blower of the air conditioner is operating. As a result, ozone is diffused and conveyed during air supply, acts on pollutants adhering to in-flight equipment and ducts, and is deodorized and sterilized.

The cleaning work for deodorization and sterilization is basically performed on holidays and nights when no one is in the room. However, all the air blown into the room through the duct is discharged to the air outlet. Since it passes through the provided ozone adsorber or ozone decomposer, ozone is decomposed when passing through these, and the effect on the human body is minimized.

By carrying out the deodorization and sterilization work for a predetermined time, the decomposition and sterilization of contaminants attached to the inner walls of the machine, the duct walls, dampers, etc. as well as the filters and heat exchangers in the machine progress Airflow can be used for automatic cleaning without disassembling the interior or ducts.

[0013]

FIG. 1 shows an embodiment of the device of the present invention.
1 is an air conditioner for duct air conditioning, 2 is an air outlet of each room, and 3 is an air supply duct from the air conditioner 1 to the air outlet 2. Reference numeral 4 is a return air duct, and the room air sucked from the air suction port 5 of each room is taken into the air conditioner 1 through the return air duct 4. Reference numeral 6 denotes an outside air duct, and outside air or ambient air is taken into the air conditioner 1 through this outside air duct 6.

In the air conditioner 1 of this embodiment, the air-mixing box 7, the filter 8, the heat exchange coils 9A and 9B,
An air blower 10 is provided inside the air blower, and the discharge air that has passed through the air blower 10 enters the air supply chamber 11 and is then sent to the air supply duct 1. A plurality of air supply ducts 1 may be connected to the air supply chamber 11.

In the present invention, in such duct air-conditioning equipment, the ozone generator 12 is installed in the intake air passage to the air conditioner 1, and the ozone adsorber ( Or an ozone decomposer) 13 is attached.

In the illustrated example, the ozone generator 12 is installed in the mixing box 7 in which the return air and the outside air are mixed. That is, it is installed on the most upstream side of the air conditioner 1. The ozone adsorber (or ozone decomposer) 13 is detachably attached to all the air outlets 2 of the duct terminals. Both the ozone adsorber and the ozone decomposer can be placed side by side. An ozone adsorber loaded with an activated carbon layer is used, and an ozone decomposer loaded with manganese oxide is used.

When the equipment of the present invention is used to clean the equipment, the blower 10 is driven to drive each room and the air conditioner 1.
The power of the ozone generator 12 is turned on while circulating the air in the air conditioner 1, the air supply chamber 11, the air supply duct 3
In addition, ozone is supplied to the positions of the air outlets 2 that come into contact with the supplied air by using the supplied air. The heat exchange coil 9
Although A and 9B are suspended, it does not matter if they are in operation. If the filter 8 is of the winding type, it is fed quickly so that the entire surface can be cleaned during the cleaning operation.

After a predetermined cleaning time, the ozone generator 1
2 is turned off, the ozone adsorber and / or the ozone decomposer 13 attached to each air outlet 2 is removed, and the operation is completed.

[0019]

As described above, according to the device of the present invention, cleaning for deodorizing and sterilizing the inside of the air conditioner or the duct in the duct air conditioning equipment can be performed unattended by using the air flow. Therefore, it is not necessary to disassemble the air conditioner, ducts, dampers, etc., and cleaning work is very easy.

Further, since the ozone adsorber or the ozone decomposer is installed at the air outlet facing the room, the desorption operation of the ozone adsorber or the ozone decomposer is simple, and all the ozone air is the ozone adsorber or the ozone decomposer. Since it will pass through, the effect of ozone on the human body can be avoided.

Therefore, the problem of the deterioration of the indoor air quality due to the contamination in the duct, which has been a problem in the duct air conditioning, can be avoided with a simple facility, which can greatly contribute to the formation of a comfortable environment.

[Brief description of drawings]

FIG. 1 is an equipment arrangement system diagram showing an example of a deodorizing and sterilizing apparatus of the present invention for duct air conditioning equipment.

[Explanation of symbols]

 1 Air conditioner 2 Air outlet 3 Air supply duct 4 Return air duct 6 Outside air duct 7 Air mixture box 8 Filter 9 Heat exchange coil 10 Blower 11 Air supply chamber 12 Ozone generator 13 Ozone adsorber or Ozone decomposer

Claims (4)

(57) [Scope of utility model registration request] 1. In a duct air-conditioning equipment for sending air treated by an air conditioner to an air outlet of each room through a duct, an ozone generator is installed in an intake air passage to the air conditioner, and An ozone adsorber or an ozone decomposer is detachably attached to the air outlet surface of each air outlet of
A disinfection deodorizer for duct air-conditioning equipment, which is characterized in that a disinfection deodorization operation is performed when stopped . 2. The air passage in which the ozone generator is installed,
The disinfection deodorizing device according to claim 1, which is a mixture box into which return air and outside air from the room are introduced. 3. The sterilization / deodorization device according to claim 1, wherein the ozone adsorber uses activated carbon as an adsorbent. 4. The disinfecting deodorizer according to claim 1, wherein the ozone decomposer uses manganese oxide as a decomposition catalyst.