JP2005214460A - Anti-bacteria and anti-mold resin mold, and air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anti-bacteria and anti-mold resin mold, usable as a drain plate for an air conditioner, for example, in which generation of slime in drain water can be restricted for a long period, and an air conditioner, in which failure due to slime is not generated. <P>SOLUTION: In this anti-bacteria and anti-mold resin mold, mix of anti-bacteria and anti-mold agent with wax and resin material are used for a base material, where dispersion quantity of the anti-bacteria and anti-mold agent is set to be 10-60 wt%, instead of addition of filler. The air conditioner comprises a resin mold for an air conditioner composed of the anti-bacteria and anti-mold resin mold. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention provides a mold-proof and anti-bacterial / resin-molded resin molded body having a use as a drain pan for an air conditioner that can suppress generation of slime in drain water over a long period of time, and failure due to slime. The present invention relates to an air conditioner that does not generate.

  When the air conditioner is cooled, the air introduced into the apparatus is cooled by the heat exchanger, and moisture contained in the air is condensed on the surface of the heat exchanger. Condensed water (drain water) is temporarily stored in a drain pan disposed below the heat exchanger and discharged outside the system by a drain pump and drain hose. The drain water stored in this drain pan In some cases, microorganisms propagate and sticky substances (slime) are generated. The slime generated in the drain water causes the failure of the air conditioner such as the drain pump and the drain hose being blocked and the drain water leaking in due course.

  As a method for solving such a problem, there is a concept of disinfecting an antibacterial and antifungal agent in a drain pan so that microorganisms do not propagate in the drain water. However, when the drain pan is composed of a resin molded body, if a large amount of the antibacterial / antifungal agent is dispersed in the drain pan, the molding of the antibacterial / antifungal agent and the resin base material is reduced. Since the performance deteriorates, even a drain pan in which 3% by weight of the antibacterial / antifungal agent is dispersed cannot be produced with high molding accuracy. Since the amount of the agent dispersed was limited, the evaluation was inferior in the sustainability of the effect.

Therefore, in Patent Document 1, the resin base material contains an antibacterial / antifungal agent and a filler that improves the dispersion of the antibacterial / antifungal agent and facilitates the dissolution of the antibacterial / antifungal agent into drain water. There has been proposed a method for preventing the generation of slime in the drain water by disposing the antibacterial and antifungal plate for the air conditioner in the drain pan. However, even with this method, the sustainability of the effect is not always satisfactory, and there is a problem that the addition of a filler adversely affects the moldability of the resin molded body.
JP 7-103500 A

  Therefore, the present invention provides a mold-proof and anti-fungus resin molded product with high molding accuracy and a slime, which can be used as a drain pan for an air conditioner capable of suppressing generation of slime in drain water over a long period of time. An object of the present invention is to provide an air conditioner that does not cause a failure.

  As a result of various studies in view of the above points, the present inventors have dispersed a large amount of the antifungal and antifungal agent by using a mixture of the antifungal and antifungal agent and the wax and a resin base material as raw materials. It became possible to manufacture the drain pan made with high shaping | molding precision, and it discovered that generation | occurrence | production of slime in drain water could be suppressed over a long period of time, and came to complete this invention.

That is, the antibacterial / antifungal resin molded article of the present invention, as described in claim 1, uses a mixture of the antifungal / antifungal agent and wax and a resin base material as raw materials, and the amount of the antibacterial / antifungal agent dispersed is It is formed without adding a filler so as to be 10 to 60% by weight.
Further, the antibacterial / antifungal resin molded product according to claim 2 is the antibacterial / antifungal resin molded product according to claim 1, wherein the antibacterial / antifungal resin molded product generates slime in drain water. It is a resin molded product for an air conditioner in which a fungicide and fungicide for suppression are dispersed.
The antibacterial / antifungal resin molded product according to claim 3 is the antibacterial / antifungal resin molded product according to claim 2, wherein the resin molded product for an air conditioner is a drain pan for an air conditioner. Features.
The antibacterial / antifungal resin molded article according to claim 4 is the antibacterial / antifungal resin molded article according to any one of claims 1 to 3, wherein the antifungal / antifungal agent is zinc pyrithione. And
Further, the antibacterial / antifungal resin molded article according to claim 5 is the antibacterial / antifungal resin molded article according to any one of claims 1 to 4, wherein the mixing ratio of the antifungal / antifungal agent and the wax is A mixture having a ratio of 9: 1 to 7: 3 is used as a raw material.
Moreover, the air conditioner of this invention has arrange | positioned the resin molding for air conditioners of Claim 2 as described in Claim 6, It is characterized by the above-mentioned.

  ADVANTAGE OF THE INVENTION According to this invention, the antibacterial and antifungal resin molded object and slime with the high shaping | molding precision which have a use as a drain pan for air conditioners etc. which can suppress generating slime in drain water over a long period of time. It is possible to provide an air conditioner that does not cause a failure due to the above.

  When the antibacterial / antifungal resin molded article of the present invention is used, for example, as a drain pan for an air conditioner, as an antibacterial / antifungal agent that serves as an active ingredient for suppressing the generation of slime in the drain water, It is desirable to use an organic antifungal agent having a decomposition temperature of 200 ° C. or higher. By using such an antibacterial / antifungal agent, decomposition of the antibacterial / antifungal agent due to high heat during molding of the resin molded article can be prevented. Zinc pyrithione, 1- (diiodomethylsulfonyl) -4-methylbenzene, 3-iodo-2-propargylbutylcarbamic acid, etc. can be used as the organic antibacterial / antifungal agent having a decomposition temperature of 200 ° C. or higher. . Among them, zinc pyrithione which is excellent in antibacterial and antifungal properties and has low solubility in water can be suitably used. Moreover, 1,1'-hexamethylenebis [5- (4-chlorophenyl) biguanide] dihydrochloride, 1,1'-hexamethylenebis [5- is used as an organic antifungal agent having a decomposition temperature of 200 ° C. or higher. (4-chlorophenyl) biguanide], 2,4,4′-trichloro-2′-hydroxydiphenyl ether and other antibacterial agents, and 2- (4-thiazolyl) benzimidazole, methyl 2-benzimidazolylcarbamate, Using an agent having excellent antifungal properties such as 2,4,5,6-tetrachloroisophthalonitrile, N-fluorodichloromethylthiophthalimide, 2,3,5,6-tetrachloro-4- (methylsulfonyl) pyridine Also good. In addition, an antibacterial and antifungal agent may be used alone or in combination of two or more.

  The antibacterial / antifungal resin molded article of the present invention is prepared in advance by mixing an antibacterial / antifungal agent and a wax, using the mixture and a resin base material as raw materials, and without adding a filler. It is manufactured by molding into Synthetic waxes such as polyolefin waxes or natural waxes such as carnauba waxes may be used as the wax used in preparing the mixture with the antibacterial and antifungal agent. The mixing ratio of the antibacterial / antifungal agent and the wax is preferably 9: 1 to 7: 3. The mixing ratio of the antibacterial / antifungal agent to the wax may be difficult to ensure excellent moldability by mixing the wax, while the antibacterial / antifungal agent has a too high mixing ratio. This is because the sustainability of the antifungal effect may be adversely affected. A synthetic resin lubricant may be added to the mixture of the antibacterial / antifungal agent and the wax as a dispersion aid for the resin base so that the content in the mixture is 1 to 5% by weight. As the resin substrate, polystyrene, vinyl chloride, polyethylene, polypropylene, polyester, or the like can be suitably used. These have a molding temperature as low as about 200 ° C., have little influence on the thermal stability of the antibacterial / antifungal agent at the time of molding, and have a relatively low hardness when molded. It can be smoothly eluted into drain water.

  The molding of the resin molding may be performed by using a molding technique known per se such as injection molding without adding a filler, using, for example, a mixture of antibacterial / antifungal agent and wax and a resin base material as raw materials. The dispersion amount of the antibacterial / antifungal agent in the resin molding is defined as 10 to 60% by weight. If the dispersion amount of the antibacterial / antifungal agent is less than 10% by weight, the sustainability of the effect may be adversely affected. On the other hand, when the dispersion amount of the antibacterial / antifungal agent exceeds 60% by weight, the effect of securing excellent moldability by using the wax may be reduced. The dispersion amount of the antibacterial / antifungal agent in the resin molded body is desirably 30 to 50% by weight, and more desirably 35 to 45% by weight.

  The antibacterial / antifungal resin molded article of the present invention thus produced is excellent in antibacterial / antifungal properties and moldability, and for example, suppresses generation of slime in drain water over a long period of time. Although it can be used as a resin molded body for an air conditioner such as a drain pan for an air conditioner, the use of the antibacterial and antifungal resin molded body of the present invention is limited to the resin molded body for an air conditioner. It can be used for various applications that require antibacterial and antifungal properties.

  FIG. 1 is a cross-sectional view of one embodiment of an air conditioner in which the resin molded body for an air conditioner of the present invention is disposed. The air flow through the machine is caused by the blower fan 1, and the air introduced from the suction grill 2 into the machine is cooled by the heat exchanger 3, and is discharged to the outside through the blower fan 1 and the blowout flap 4. The Moisture contained in the air introduced into the machine is condensed on the surface of the heat exchanger 3 to become drain water, and is supplied to the drain pan 5 of the present invention disposed below the heat exchanger 3. It is temporarily stored and discharged out of the system by a drain pump and a drain hose (not shown). FIG. 2 is a perspective view of the drain pan 5. Since this drain pan 5 is obtained by dispersing a large amount of antibacterial / antifungal agent, even if drain water is stored at the bottom of the drain pan, the antibacterial / antifungal agent elutes smoothly and for a long time from the drain pan. Therefore, generation | occurrence | production of slime in drain water can be suppressed over a long period of time. In addition, if the drain pan installed by making it fit in the bottom part of the drain pan 5 of FIG. 2 is prepared separately, and this fitting installation drain pan is comprised with the antibacterial and antifungal resin molded object of this invention, the said drain pan will be said. Does not require as complex molding as the drain pan 5, so when selecting a resin base material, a resin base material that exhibits superior antibacterial and antifungal properties than selection of a resin base material with excellent moldability Can be prioritized.

  EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is limited to this and is not interpreted.

Example: Production of air conditioner drain pan in which antibacterial and antifungal agents are dispersed 80% by weight of zinc pyrithione, 18% by weight of polyolefin wax, and 2% by weight of lubricant for synthetic resin are uniformly mixed at 70 ° C. to prepare a mixture The mixture and polypropylene were mixed at a ratio of 1: 1 at room temperature, and a drain pan in which the amount of zinc pyrithione having the shape shown in FIGS. 1 and 2 was 40% by weight was manufactured by injection molding. The drain pan had a hardness (ASTM D2240) of 70 to 72 (actual value measured by Durometer D type manufactured by Kobunshi Keiki Co., Ltd.), and was in a range of hardness (55 to 85) appropriate for eluting zinc pyrithione ( The hardness of the polypropylene molded product in which zinc pyrithione is not dispersed is 74 to 75).

Test Example: Effect of Drain Dish for Air Conditioner Dispersed with Antibacterial and Antifungal Agent A standard agar medium (NA medium) was injected into a petri dish having a diameter of 9 cm, and zinc pyrithione produced in the example was dispersed in the center. A 1 cm × 1 cm test piece cut out from the air conditioner drain pan was placed. The slime was collected from the drain water in which the slime was generated, and dissolved in sterilized water, 1 mL was sprayed on the surface of the standard agar medium and left at 32 ° C. for 1 day. As a result, no slime was generated near the periphery of the test piece, but slime was generated in other portions, and a halo phenomenon was observed. Accordingly, the air conditioner drain pan in which zinc pyrithione produced in the example is dispersed effectively suppresses generation of slime by smoothly eluting zinc pyrithione in water, and zinc pyrithione has low solubility in water. Therefore, it was found that the effect of the drain pan in which zinc pyrithione was dispersed in a large amount was long-lasting.

  The present invention provides a mold-proof and anti-bacterial / resin-molded resin molded body having a use as a drain pan for an air conditioner that can suppress generation of slime in drain water over a long period of time, and failure due to slime. The present invention has industrial applicability in that an air conditioner without generation can be provided.

It is sectional drawing of the one aspect | mode of the air conditioner formed by arrange | positioning the drain tray for air conditioners of this invention. It is a perspective view of one mode of a drain pan for an air conditioner of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Blower fan 2 Suction grill 3 Heat exchanger 4 Blowout flap 5 Anti-bacterial and anti-mold resin molding (drain pan)

Claims (6)

  Using a mixture of antibacterial / antifungal agent and wax and a resin base material as raw materials, the antibacterial / antifungal agent is molded without adding a filler so that the dispersion amount is 10 to 60% by weight. Characteristic antibacterial and antifungal resin molded product.   The antibacterial / antifungal resin molded article is a resin molded article for an air conditioner in which an antibacterial / antifungal agent for suppressing generation of slime in drain water is dispersed. Antibacterial and antifungal resin molded product.   The antibacterial and antifungal resin molded product according to claim 2, wherein the resin molded product for an air conditioner is a drain pan for an air conditioner.   The antibacterial / antifungal resin molded article according to any one of claims 1 to 3, wherein the antibacterial / antifungal agent is zinc pyrithione.   The antibacterial / antifungal resin molding according to any one of claims 1 to 4, wherein a mixture in which a mixing ratio of the antibacterial / antifungal agent and the wax is 9: 1 to 7: 3 is used as a raw material. body.   An air conditioner comprising the resin molded body for an air conditioner according to claim 2.

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