JPH0614829U - Decontamination deodorizer for duct air conditioning equipment - Google Patents

Abstract

(57) [Summary] [Purpose] Unattended cleaning of air conditioners and ducts in duct air-conditioning equipment for deodorization and sterilization. [Composition] In a duct air-conditioning system that sends air treated by an air conditioner to the air outlet of each room via a duct,
An ozone generator is installed in the intake air passage to the air conditioner, and an ozone adsorber or an ozone decomposer is attached to each of the air outlets.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for cleaning the inside of an air conditioner of a duct air conditioner and the duct by using an air flow.

[0002]

[Prior art]

 A so-called duct air conditioning system is generally used in office buildings and factories to install a supply duct from the central air conditioner to 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 purified air are adjusted by a filter and heat exchanger inside the room, and the air is sent to the air outlet of each room via 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, copying machines, OA equipments, smoking, etc.) are circulated through return air and polluted outside air. If introduced, the air quality of the supply air may 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, causing permanent deterioration of the air quality. For example, the occurrence of odors and the reproduction of bacteria also occur.

For this reason, although improvement of the performance of the filter and recovery / replacement of the filter have been taken, the effect on the gas component, sterilization, etc. is small.

[0006]

[Problems to be solved by the device]

 If odor-producing substances (organic substances) or bacteria adhere to the inner wall of the duct or the inside of the air conditioner, and have a negative impact on the environment, cleaning is necessary. However, cleaning the inside of the duct once installed cannot be done easily. For this reason, cleaning robots are also on the scene, but there are limits to this. The present invention aims to solve this problem.

[0007]

[Means for Solving the Problems]

 The present invention is a duct air-conditioning equipment that sends air treated by an air conditioner to the air outlet of each room through a duct, and an ozone generator is installed in the intake air passage to the air conditioner. A sterilizing and deodorizing device for duct air-conditioning equipment, characterized in that an ozone adsorber or an ozone decomposer is attached to each of the air outlets.

[0008]

[Action]

 The deodorizing power and sterilizing power of ozone are already known. In other words, many of the substances that generate odors are aromatic compounds, but ozone has a deodorizing ability because it has the property of decomposing to unsaturated compounds having carbon rings and double or triple bonds of aromatic compounds. In addition, ozone has a bactericidal ability because it can damage the 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 in ASHRAE STANDARD 62-1982, it is set at 0.05 ppm as a guideline for indoor emission 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 inside of 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 transported during the air supply, and acts on the pollutants adhering to the equipment and ducts in the aircraft to deodorize and disinfect.

The cleaning work for the deodorization and sterilization is basically performed on holidays and nights when there are no people 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 ozone adsorber or ozone decomposer provided, ozone is decomposed when passing through these, and the effect on the human body is minimized.

By performing this deodorization and sterilization work for a predetermined time, the decomposition and sterilization of contaminants adhering to the inner walls, duct walls, dampers, etc. as well as the in-machine filters, heat exchangers, and blowers progress, It can be automatically cleaned by using the airflow without disassembling the inside of the machine or the duct.

[0013]

【Example】

 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, 3 is an air supply duct from the air conditioner 1 to the air outlet 2. Is shown. Reference numeral 4 is a return air duct, and the indoor air sucked from the air intake 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 the 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 example, an air-mixing box 7, a filter 8, heat exchange coils 9A and 9B, and a blower 10 are provided in the inside of the air flow order, and the discharge air that has passed through the blower 10 is supplied. After entering the chamber 11, air is supplied to the air supply duct 1. A plurality of air supply ducts 1 may be connected to the air supply chamber 11.

According to the present invention, in such a duct air-conditioning equipment, an ozone generator 12 is installed in an intake air passage to the air conditioner 1, and an ozone adsorber is provided on the outlet surface of the air outlet 2 of the duct terminal. (Or 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 end. 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 circulate the air in each room and the air conditioner 1, and the ozone generator 12 is turned on to turn on the air conditioner. 1. Air supply chamber 11, air supply duct 3, and air supply of each air outlet 2 Ozone is supplied to the positions in contact with air by using air supply. At that time, the heat exchange coils 9A and 9B are stopped, but it does not matter even if they are operated. 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 has passed, the power of the ozone generator 12 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]

[Effect of device]

 As described above, according to the device of the present invention, cleaning for deodorizing and sterilizing the inside of the air conditioner and 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 decomposing device is installed at the air outlet facing the room, the desorption operation of the ozone adsorbing device or the ozone decomposing device is also easy. Since it will pass through the vessel, the effects of ozone on the human body can be avoided.

Therefore, the problem of deterioration of indoor air quality due to contamination in the duct, which has been a problem in duct air conditioning, can be avoided with simple equipment, and it 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)

[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 A sterilizing and deodorizing device for duct air-conditioning equipment, characterized in that an ozone adsorber or an ozone decomposer is attached to each air outlet. 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.