JP2573045B2 - Blower - Google Patents

Description

The present invention relates to a blower. More specifically, the present invention relates to an air conditioner that cools and heats a room and a blower such as a circulation fan that circulates room air.

(B) Conventional technology When the room is kept in a closed state, air conditioning is used to cool or heat the room, or a circulating fan is operated in combination with a hot air heater to heat and humidify the room.
Mold is air conditioner and air filter of circulation fan,
The mold is generated on the surface of the members that come into contact with the airflow, such as the intake grill, fan, and fan casing, and this mold is blown out into the room, causing people in the room to suffer from respiratory illness such as asthma and harm their health. Has occurred.

For this reason, as disclosed in Japanese Utility Model Application Laid-Open No. Sho 61-7729, it has been proposed to apply a commercially available fungicide to the blowing section of an air conditioner by spraying. There is a drawback that the fungicide flows down due to the dew water adhering to the blowing wall of the mold, and the fungicide effect is not maintained.

On the other hand, various synthetic resin molded products are used as members that come into contact with the air flow as described above. Therefore, for the purpose of preventing the occurrence of the above-mentioned mold, it has been proposed to use a synthetic resin molded article molded by adding an antibacterial agent such as a fungicide as such a member (Japanese Patent Application Laid-Open No. 62-106231 and Japanese Patent Application Laid-Open No. 62-106231). Kaisho
57-179522).

(C) Problems to be Solved by the Invention The synthetic resin molded article to which the antibacterial agent is added is intended to have a long-term fungicidal effect by gradually bleeding out the contained antibacterial agent to the surface. It is used as

Among the synthetic resin molded products, a so-called non-crystalline resin having a low crystallinity or an amorphous material such as polystyrene resin, acrylonitrile-styrene resin (AS resin), and acrylonitrile-butadiene-styrene resin (ABS resin) was used. In the case of molded articles, even if an antibacterial agent is added, bleed-out hardly occurs, and as a result, there is a drawback that the antifungal effect is not maintained or the durability is low.

The present invention has been made in view of such circumstances,
In particular, it is an object of the present invention to provide a blower that can exhibit a good antifungal effect over a long period of time.

(D) Means for solving the problem From the above viewpoint, the present inventors have conducted intensive research, and as a result,
By using a synthetic resin molded product obtained by adding a water-supplying resin to a molding resin material together with an antibacterial agent as the member, the agent in the air bleeds out of the resin due to moisture in the air, and the durability of the antifungal effect is maintained. Was found to be significantly improved, and the present invention was reached.

Thus, according to the present invention, there is provided a blower, wherein the synthetic resin member in contact with the airflow in the blower is formed of a synthetic resin molded product to which an antibacterial agent and a water-absorbing resin are added. .

"Synthetic resin member in contact with airflow" in the present invention
Means the front panel of the blower, the intake / outlet grill, the main casing, the fan casing, the cross flow fan,
It means an air filter or the like. In particular, a net of an air filter is a suitable object. Typical examples of the synthetic resin constituting the material of these molded products are polyethylene resin (PE resin), polypropylene resin (PP resin), acrylonitrile-butadiene-styrene resin (ABS resin), acrylonitrile-styrene resin (AS resin), and polystyrene resin. (PS resin), polyamide resin (PA resin) and the like. Among them, it is preferable to use a so-called non-crystalline resin such as PS resin, AS resin and ABS resin.

It is desirable that the antibacterial agent in the present invention does not substantially decompose at the molding temperature of the synthetic resin (about 200 to 250 ° C.) and has an antibacterial action against various kinds of bacteria and fungi. Further, from the viewpoint of not imparting plasticity, a solid powder is preferred. From this viewpoint, diphenyl ethers, N-
It is preferable to use haloalkylthios, benzimidazoles, organic arsenic compounds, or hydrated metal salts of alumina silica.

Here, typical examples of diphenyl ethers are 2,4,4 ′
- trichloro-2'-hydroxydiphenyl ether _{(C 12 H 7 Cl 3 O} 2), which is hexachloro-hydroxydiphenyl ether _{(C 12 H 3 Cl 6 O} 2). A typical example of the N-haloalkylthio compound is N- (fluorodichloromethylthio)
- phthalimide _{(C 9 H 4 Cl 2 FNO} 2 S), N, N'- dimethyl -
N'- phenyl -N'- fluorodichloromethylthio sulfamide _{(C 6 H 12 Cl 2 FN} 2 O 2 S 2), an N- trichloromethylthio tetrahydrophthalimide _{(C 6 H 8 Cl 3 NO} 2 S). Representative examples of benzimidazoles include 2- (4-thiazolyl) benzimidazole (C ₁₀ H ₇ N ₃ S) and 2- (methoxycarbonylamino) benzimidazole (C ₉ H ₉ N
₃ O ₂ ). Representative examples of organic arsenic compounds, 10,10'-oxy-bis phenoxy sialic Shin _{(C 24 H 16 As 2 O} 3), there is Arusuchinoru _{(C 11 H 14 AsNO 3 S} 2). Alumina-silica hydrated metal salt of the formula _{^{Me 2 / nO · Al 2 O}} 3 · xSiO 2 · yH 2 O [ wherein Me ²
Is a salt represented by Cu ⁺⁺ , Ag ⁺⁺ , Zn ⁺ ; n, x and y are natural numbers]. Each of these antibacterial agents is a known solid compound at normal temperature. These antibacterial agents may be used alone or in a mixture of two or more.

As the water-absorbing resin in the present invention, a resin having the ability to absorb water of about several hundred times its own weight or more, and a so-called super-absorbent resin, a known resin called a highly hygroscopic resin is used. Is suitable. Specific examples of such a water-absorbent resin include acrylic acid (salt) graft starch, vinyl alcohol / acrylate copolymer, cross-linked polyacrylate, hydrolyzate of polyacrylonitrile, modified polyvinyl alcohol, cross-linked carxymethyl cellulose, and the like. No. These are usually available in powdered form.

By adding the antibacterial agent and the water-absorbing resin into the synthetic resin molded product, the molded product used in the present invention can be obtained.

Here, the addition of the antimicrobial agent and the water-absorbent resin to the molded article is usually performed by adding and kneading the synthetic resin before molding, followed by molding. For example, a pellet is formed in advance with a predetermined amount of an antibacterial agent and a water-absorbent resin and a synthetic resin, and the pellet and the synthetic resin pellet are heated to about 200 to 250 ° C. and melted,
Extrusion molding may be used. As the molding method itself, a method that matches a desired molded product is selectively used. The antibacterial agent and the water-absorbing resin may be separately added to the synthetic resin for molding, but usually, in order to obtain uniform dispersion in the resin,
It is preferable to mix both at a predetermined ratio in advance, and then add this mixture. Further, the amount of the antibacterial agent to be added is preferably 0.2 to 5.0% by weight in the synthetic resin, and the amount of the water-absorbing resin is also suitably to be 5 to 30% by weight. If the amount of the water-absorbing resin is too small, the effect of improving bleed-out is insufficient.

(E) Operation The water-absorbing resin added to the synthetic resin molded product absorbs the moisture of the outside air and the moisture condensed on the surface of the molded product into the molded product, thereby forming the surface of the antibacterial agent contained therein. Acts to promote bleed-out to As a result, the durability of the antifungal effect is improved.

In addition, since the above-mentioned water absorbing action and bleed-out promoting action are particularly strongly exhibited in the state where water is condensed on the surface of the molded article, the antibacterial agent can be effectively acted on in the dew condensation state where mold is most likely to be generated or propagated. Therefore, the water-absorbing resin also exerts a control action of adjusting the bleed-out amount according to the environment.

(F) Example An example of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a front panel attached to the front of a main body 2 of an air conditioner (blower), and a suction grill 3
And a blowout grill 5 with a wind direction changing blade 4 are provided.

FIG. 2 is a cross-sectional view of the air conditioner taken along the line II-II 'of FIG. 1, and a heat exchanger 7 acting as an evaporator during cooling and as a condenser during heating is provided in a casing 6 of the main body 2.
A cross-flow fan 9 for blowing room air sucked from the suction grill 3 through the air filter 8 and the heat exchanger 7 from the blow grill 5; and a fan casing 10 for guiding room air from the suction grill 3 to the blow grill 5. And a drain pan 11 for receiving drain water dropped from the heat exchanger 7 during cooling.

The casing 6, the front panel 1, the cross flow fan 9, the fan casing 10, the wind direction changing blade 4 and the air filter 8 are each made of alumina as an antibacterial agent.
Silica hydrated metal salt [Bactekiller, Kanebo Co., Ltd.] 2 wt% and acrylic acid (salt) graft starch as a water absorbing resin [Trade name Sunwet IM-1000MPS, Sanyo Chemical Co., Ltd.] 25 wt% Is added.

In addition, each such molded product is made of alumina resin in the material resin.
It was prepared by adding a mixed powder of a silica-containing metal salt and a water-absorbing resin, kneading the mixture, and then molding the mixture into the respective shapes.

In such an air conditioner, as described above, since a water-absorbing resin is added together with an antibacterial agent to each synthetic resin molded product that comes into contact with an air flow, a molded product containing only an antibacterial agent is used. As a result, the durability of the antifungal effect is remarkably improved. In particular, the outlet grill 5 to which dew condensation water adheres during cooling, the wind direction changing blades 4 and the drain pan 11 in which drain water accumulates, and the casing 6, the front panel 1, the suction grill 3, which receives moisture during heating and humidification,
No mold is generated on the cross flow fan 9, the fan casing 10, and the element 12 of the air filter 8.

In addition, among the above-mentioned molded products, the air filter was recognized for the anti-mold effect according to JIS Z2911 after the test for maintaining the anti-mold effect (acceleration test: 70 ° C., 7 days). For comparison, the following table also shows the results of a test conducted on an air filter molded in the same manner except that the water absorbent resin was not added.

Thus, it can be seen that the antifungal effect is significantly improved in the examples.

(G) Effects of the Invention According to the air blower of the present invention, mold is generated on the surface of the synthetic resin member that comes into contact with the air flow by being wetted by dew or drain water during cooling or by being moistened during heating and humidification. And the antibacterial agent is kneaded together with the water-absorbing resin, so that the antifungal effect can be exhibited for a long period of time.

In particular, if the present invention is applied to an air filter element or a cross flow fan in which water is frequently washed or dew is likely to be generated, the fungicide effect is semi-permanently maintained, which is extremely useful.

[Brief description of the drawings]

1 is a perspective view of an air conditioner, and FIG. 2 is a perspective view of the air conditioner cut along a line II-II 'in FIG. 1 front panel 3 suction grille 4 wind direction changing blades 5 blowout grille 6 body casing 9 cross flow fan 10 fan casing 11 drain pan 12 …… Air filter element.

Claims (1)

(57) [Claims] 1. A blower, wherein the synthetic resin member in contact with the air flow in the blower is made of a synthetic resin molded product to which an antibacterial agent and a water-absorbing resin are added.