JPH08193724A - Blower fan - Google Patents

Abstract

PURPOSE: To improve an antibacterial activity and a fungus resistance effect property by a method wherein a conductive material containing a carbon fiber as a main constituent is mixed in a synthetic resin material so that surface resistivity be a specified value or below and a voltage of a specified value or below is impressed on the material thus prepared. CONSTITUTION: A blower fan made of a synthetic resin and having a plurality of vane parts 4 is constructed. This synthetic resin material is constituted of an AS resin (acrylonitrile-styrene). A conductive material 5 containing CF (carbon fiber) as a main constituent is mixed in this synthetic resin material so that surface resistivity be 10<5> Ω or below, and a voltage of 12V or below is impressed on the synthetic resin thus prepared. As another embodiment, a blower fan made of a metal and having a plurality of vane parts 4 is constructed, a coated steel sheet prepared by coating the structural material of the fan with a semiconductive coating material 6 making the surface resistivity 10<5> Ω or below is used and the voltage of 12V or below is impressed on this coated steel sheet. Effects of an electric germicidal action by the voltage impression and of a heating germicidal action by heating of the structural material by the voltage impression are obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower fan for an air conditioner which prevents the generation of mold during long-term use.

[0002]

2. Description of the Related Art Conventionally, in this type of resin blower fan, as is known from, for example, Japanese Utility Model Laid-Open No. 54-20004, the blade portion and the end plate are integrally structured, and AS (acrylonitrile-styrene) for synthetic resin materials
For example, a resin having glass fiber mixed in about 20 to 30% to improve strength is used.

A resin fan or a painted metal fan is used.
The surface resistivity of the fan is generally 10 ¹⁶Ω
With a resin fan for air conditioners and a metal painting fan,
Applying a voltage to the surface of the constituent materials to electrically sterilize or heat kill
Surface resistance of 10 to treat bacteria^FiveΩ or less
There is nothing.

[0004]

In such a conventional structure, static electricity generated when the fan is rotated or dew condensation of moisture in the air causes dust and other nutrients for the mold to adhere to the wing portion. Depending on the type, as shown in FIG.
There is a problem that the mold 102 is generated in a limited portion (inner wall surface) of No. 1. This is not good in terms of hygiene in the case of an air conditioner, because mold spores and the like are scattered in the air during operation.

Further, there is a drawback that the resistance of the blast passage increases due to the growth of fungi, leading to a decrease in the blast capacity and a decrease in the capacity of the air conditioner. Further, there is also a drawback that the blower sound is increased due to the mold surface of the fan blades being increased, and the noise of the air conditioner is increased.

Therefore, the present invention reduces the surface resistivity of the fan to 1
The present invention provides a blower fan in which a constituent material of 0 ⁵ Ω or less is used and an antibacterial and antifungal effect is obtained by applying a voltage to the surface of the fan.

[0007]

Means for Solving the Problems The technical means of the present invention for solving the above problems constitutes a blower fan made of synthetic resin having a plurality of blades, and the synthetic resin material is made of AS resin. , CF (carbon fiber, hereinafter C) so that the surface resistivity of the synthetic resin material becomes 10 ⁵ Ω or less.
A conductive material containing F) as a main component is mixed and a voltage of 12 V or less is applied to this synthetic resin. Moreover, a metallic blower fan having a plurality of blades is formed, and the surface resistance of the constituent materials is increased. A coated steel sheet coated with a semi-conductive paint having a rate of 10 ⁵ Ω or less is used, and a voltage of 12 V or less is applied to the coated steel sheet.

[0008]

According to the present invention, a conductive material containing CF as a main component is mixed in the constituent material of the resin fan so that the surface resistivity becomes 10 ⁵ Ω or less, and in the case of the metal blower fan, By using a coated steel sheet coated with a conductive paint and applying a voltage of 12 V or less to the constituent material, electrical sterilization by voltage application and heat sterilization effect by heat generation of the constituent material by voltage application are obtained. By adjusting the temperature of the fan to about 40 to 80 ° C., sterilization and the growth of mold are prevented, and the hygiene comfort is improved.

[0009]

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

First, the first embodiment will be described. In FIGS. 3 and 4, reference numeral 1 denotes a cross flow fan made of a synthetic resin made of an AS (acrylonitrile styrene) resin material mixed with CF in an amount of 10 to 30%, and includes an end plate 2, a plurality of partition plates 3, and an end plate 2. And a plurality of blades 4 provided between the partition plate 3 and the partition plate 3.

As the material of the cross flow fan 1, as shown in FIG. 1, 10 to 3 CF of the conductive material 5 is contained in the material.
It is mixed with 0% and processed so that the surface resistivity becomes 10 ⁵ Ω or less.

The AS (acrylonitrile styrene) resin containing 10 to 30% CF of the conductive material 5 has a lower crossflow fan density than AS + GF (glass fiber) and higher rigidity (for example, AS + 1).
About 100,000 kgf / cm ² at 0% CF, AS + 20
% CF about 150000 kgf / cm ² ), excellent in heat resistance, rigidity, ultrasonic fusion when joining each partition plate, etc. Especially, there is little deformation and balance change of the fan due to heat during heating, and heat creep resistance It is excellent and has a surface resistivity of 10 ⁵ Ω or less so that it does not easily get dust and is one of the most suitable materials for a cross flow fan in an air conditioner room.

The method of mixing the conductive material into the resin material is as follows (AS (acrylonitrile / styrene)) when manufacturing the resin material.
It is possible to mix CF into the resin.

The antibacterial and antifungal prescription is carried out by periodically applying a direct current voltage of, for example, about 12 V to both ends of the end plate 2 of the cross flow fan 1 made of this resin material.

Next, a second embodiment will be described. In FIGS. 3 and 4, reference numeral 1 denotes a metal blower fan using a coated steel plate coated with a semi-conductive paint, for example, a steel plate or a PCM steel plate is used as an end plate 2, a plurality of partition plates 3, A plurality of wings 4 provided between the end plate 2 and the partition plate 3
It is composed of

A semiconductive coating 6 is applied to the surface of this steel sheet. The semi-conductive coating material 6 is a coating material containing carbon powder or metal powder such as copper or zinc as a main component, and is a material coated on a steel plate or a PCM (pre-coated metal) steel plate.

The paint used for this steel plate is processed so that the surface resistivity of the semiconductive paint 6 of FIG. 2 is 10 ⁵ Ω or less. The surface resistivity can be adjusted by using the conductive material 5
It can be easily changed by changing the contents of the carbon powder and the metal powder such as copper and zinc.

The antibacterial and antifungal prescription is carried out by periodically applying a direct current voltage of, for example, about 12 V to both ends of the end plate 2 of the cross flow fan 1 as in the first embodiment. is there.

The applied voltage may be DC or AC,
DC voltage is preferred from the mold sterilization state. Further, a voltage of about 12 V or less is sufficient from the viewpoint of antibacterial and antifungal, and about 12 V or less is desirable from the viewpoint of safety. The application time for one application is preferably about 1 minute to 10 minutes. 1
If it is less than a minute, the effect is low, and if it is more than 10 minutes, the antibacterial and antifungal effects are not so different.

Next, the operation of the structure of this embodiment will be described. When the cross flow fan of FIG. 3 is used for a long period of time and the nutrient source of dust and mold in the air adheres to the blade portion 4 of FIG. 1 and FIG. For example, it is possible to prevent the generation of bacteria and mold by periodically applying a DC voltage of 12V.

Although the function of preventing the growth of bacteria and mold has not been clarified, it is due to electric sterilization by voltage application and due to the heat generation effect of the constituent materials. By controlling the temperature to about 80 ° C, the generation of bacteria and mold is prevented.

As a result, it is possible to prevent the generation of bacteria and fungi for a long period of time, and there is a great hygienic effect without the spores of fungi and the like being scattered in the air. Further, the propagation of fungi does not increase the resistance of the air passage, which lowers the air blowing capacity and thus the air conditioner. Further, since the fan blade surface is covered with mold, the blowing noise is increased and the noise of the air conditioner is not increased.

In this embodiment, the cross-flow fan has been explained, but other resin multi-blade fans such as sirocco fans, propeller fans and the like can be implemented in the same manner, and the same effects can be obtained.

[0024]

The blower fan for the air conditioner of the present invention is
By periodically applying a direct current voltage of, for example, about 12 V to both ends of the end plate 2 of the cross flow fan 1 having a plurality of blade portions processed to have a surface resistivity of 10 ⁵ Ω or less, It is possible to prevent the generation of bacteria and mold for a long period of time, and it is highly effective in terms of hygiene without the mold spores scattering in the air. Further, the propagation of fungi does not increase the resistance of the air passage, which lowers the air blowing capacity and thus the air conditioner. Further, since the fan blade surface is covered with mold, the blowing noise is increased and the noise of the air conditioner is not increased.

Further, a material obtained by mixing CF as the conductive material 5 into the AS (acrylonitrile / styrene) resin material is less likely to have dust and has moldability, heat resistance, rigidity, and ultrasonic fusion when joining the partition plates. It excels in wearability, and in particular, it has little heat deformation and balance change due to heat during heating, and has excellent heat-resistant creep resistance, making it the most suitable material for a cross-flow fan in an air conditioner room.

In addition, a metal blower fan using a coated steel sheet coated with a semiconductive paint can easily perform antibacterial and antifungal prescription by changing the surface to a semiconductive paint. It can be processed without significantly changing the shape.

[Brief description of drawings]

FIG. 1 is an enlarged vertical cross-sectional view of a blade portion of a resin cross flow fan according to a first embodiment of the present invention.

FIG. 2 is an enlarged vertical sectional view of a blade portion of a metal cross-flow fan according to a second embodiment of the present invention.

FIG. 3 is an external perspective view of the resin cross flow fan.

FIG. 4 is a vertical sectional view of the same cross flow fan.

FIG. 5 is an enlarged vertical sectional view of a wing portion showing a conventional mold generation state.

[Explanation of symbols]

 1 Cross-flow fan 4 Blade 5 Conductive material 6 Semi-conductive paint

Claims (2)

[Claims] 1. A blower fan made of synthetic resin having a plurality of blades, wherein the synthetic resin material is an AS resin,
The synthetic resin material is mixed with a conductive material containing carbon fiber as a main component so that the surface resistivity is 10 ⁵ Ω or less, and a voltage of 12 V or less is applied to the synthetic resin to obtain an antibacterial and antifungal effect. A blower fan for an air conditioner. 2. The blower fan according to claim 1, wherein a coated steel sheet coated with a semiconductive paint having a surface resistivity of 10 ⁵ Ω or less is used as a constituent material.