JPH0539932A - Air conditioner - Google Patents

Abstract

PURPOSE:To prevent propagation of bacteria in a cooling heat exchanger. CONSTITUTION:A water header 9 to drop down ozone water on a cooling heat exchanger 4 is provided above the cooling heat exchanger 4. The cooling heat exchanger 4 is earthed, and at the same time, a discharging electrode 3 is provided on the upstream side of the cooling heat exchanger 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner which prevents microorganisms from propagating in a cooling heat exchanger.

[0002]

2. Description of the Related Art In a conventional air conditioning system, during cooling operation, water in the air adheres to the heat exchanger for cooling in the air conditioner as condensed water and is drained as drain.

[0003]

By the way, this condensed water contains dust in the air and is discharged as a drain during operation, but when it is stopped, the heat exchanger for cooling has This condensed water is attached and remains. When the condensed water remaining on the heat exchanger for cooling contains microorganisms, there is a problem that the microorganisms easily propagate.
In particular, this heat exchanger for cooling is housed in a casing or the like, and is kept in an anaerobic atmosphere for microorganisms while the operation is stopped, so that it is in an environment where it easily breeds, and there is a problem that the breeding cannot be prevented.

Therefore, an object of the present invention is to solve the above problems and to provide an air conditioner capable of preventing the growth of microorganisms in a heat exchanger for cooling.

[0005]

In order to achieve the above object, the present invention provides a cooling water heat header on the upper part of a cooling heat exchanger, the water header flowing down ozone water to the cooling heat exchanger, Further, the cooling heat exchanger is grounded, and a discharge electrode is provided on the upstream side of the cooling heat exchanger.

[0006]

According to the above construction, by flowing ozone water from the water header to the cooling heat exchanger, even if microorganisms are attached to the cooling heat exchanger, the ozone water can be sterilized or sterilized. it can. Therefore, for example, by making ozone water flow down to the heat exchanger for cooling before or after the start of operation, it is possible to prevent the growth of microorganisms. In addition, by grounding this heat exchanger for cooling and providing a discharge electrode on the upstream side, microorganisms are more likely to be collected by the heat exchanger for cooling due to electrostatic force, and sterilization or sterilization with ozone water is more efficient. You can do it.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a casing of an air conditioner, which includes a pre-filter 2, a discharge electrode 3, a cooling heat exchanger 4, and a heating heat exchanger 5, which are arranged from the upstream side to the downstream side of the casing. At 6, the suction air is introduced into the casing 1, the dust is removed by the filter 2, the heat is exchanged by the heat exchanger 4 for cooling or the heat exchanger 5 for heating, and then the cool air or the warm air is sent through the blower 6. The wind is sent to the air-conditioned room.

The cooling heat exchanger 4 and the heating heat exchanger 5 are composed of fins and tubes, which are connected to a cold water tank and a hot water tank, respectively, which are not shown, and the cold water in the cold water tank is cooled during the cooling operation. The hot water in the hot water tank is circulated and supplied to the heating heat exchanger 4, and the hot water in the hot water tank is circulated and supplied during the heating operation.

The discharge electrode 3 has a large number of needle electrodes 6 facing the heat exchanger 4 for cooling and is connected to a negative or positive high voltage source 7, while the heat exchanger 4 for cooling is grounded 8. , Corona discharge is made from the needle electrode 6 toward the cooling heat exchanger 4.

A water header 9 is provided above the cooling heat exchanger 4.
Is provided, and the drain pan 1 is provided below the heat exchanger 4 for cooling.
The water storage tank 11 is arranged through 0. The stored water w in the water storage tank 11 is supplied to the water header 9 by the circulation pump 13 via the filter 12. An ozone generator 14 for supplying ozone or ozone water to the stored water w is connected to the water storage tank 11.

Next, the operation of the embodiment will be described.

First, in the normal cooling operation, the ozone generator 14
Without supplying ozone or ozone water to the water tank 11,
The stored water w in the water storage tank 11 is simply supplied to the header 9 and allowed to flow into the cooling heat exchanger 4. In this case, the cooling heat exchanger 4
Cools the air and serves as a wet electrostatic precipitator for fine particles not removed by the filter 2, and captures fine particles charged with corona ions from the discharge electrode 11.

Next, after the cooling operation is completed, the ozone generator 1
Ozone or ozone water is supplied from 4 to the water tank 11. The stored water w containing the ozone water in the water storage tank 11 is supplied to the header 9 and is supplied from the header 9 so as to flow down the fin plate of the cooling heat exchanger 4. At this time, the microorganisms adhering to the cooling heat exchanger 4 are sterilized or sterilized by ozone water. After completion of this operation, the cooling heat exchanger 4
Since a relatively large amount of microorganisms are attached to, the sterilization becomes possible by flowing ozone water after the completion. In this case, since the cooling operation is stopped, there is no problem even if the ozone water concentration is increased. Similarly, by sterilizing with ozone water even before the start of cooling operation, the growth of microorganisms can be more completely prevented.

In the above embodiment, the ozone water is supplied to the cooling heat exchanger 4 before or after the cooling operation is started. However, the ozone water may be supplied during the cooling operation. Good. In this case, ozone also flows into the air-conditioning room, and a high concentration adversely affects the human body. Therefore, if ozone water with a low ozone concentration (for example, the concentration of stored water is 50 ppm or less) is allowed to flow, there is no problem and sterilization is possible.

In the above embodiment, the cooling water is used as the cooling heat exchanger, but the cooling heat exchanger may be an evaporator of a heat pump type air conditioner.

[0017]

In summary, according to the present invention, by flowing ozone water from the water header to the cooling heat exchanger,
Even if microorganisms adhere to the cooling heat exchanger, they can be sterilized or sterilized with ozone water. Therefore, for example, by making ozone water flow down to the heat exchanger for cooling before or after the start of operation, it is possible to prevent the growth of microorganisms.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of the present invention.

[Explanation of symbols]

 3 Discharge electrode 4 Heat exchanger for cooling 9 Water header 11 Water tank 14 Ozone generator

Front page continuation (72) Inventor Kazuhiro Iijima 6-17-16 Higashi Narashino, Narashino City, Chiba Prefecture, Research Institute, Asahi Kogyo Co., Ltd. (72) Inventor Nicanor Buenconseho 6-17-16 Higashi Narashino, Narashino City, Chiba Prefecture Asahi Corporation (72) Inventor Akira Shibuya 6-17-16 Higashi Narashino, Narashino City, Chiba Prefecture Asahi Industry Co., Ltd.

Claims (2)

[Claims] 1. An air conditioner comprising a cooling water heat exchanger having an upper portion provided with a water header for allowing ozone water to flow down to the cooling heat exchanger. 2. The air conditioner according to claim 1, wherein the cooling heat exchanger is grounded, and a discharge electrode is provided on the upstream side of the cooling heat exchanger.