JP2004101051A - Storage warehouse - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the appearance and multiplication of bacteria on a surface of a heat exchanger installed inside a warehouse main body of a storage warehouse and put in wet environment. <P>SOLUTION: This storage warehouse is provided with the heat exchanger 14 inside the warehouse main body 11 to adjust inside temperature in the warehouse main body 11 by cooling action or heating action of the heat exchanger 14. The surface of the heat exchanger 14 is covered with a paint layer in which metallic powders having antibacterial action are uniformly dispersed to give the antibacterial action to the surface of the heat exchanger 14. Preferably, aluminum flake powder produced by plating silver or copper on flakelike aluminum is used as the metallic powder having the antibacterial action. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a storage, such as a refrigerator or a refrigerator, provided with a heat exchanger inside a refrigerator main body, wherein the internal temperature of the refrigerator main body is adjusted by a cooling action or a heating action of the heat exchanger.
[0002]
[Prior art]
Storages such as refrigerators and condensers are provided with heat exchangers such as coolers and condensers that constitute a refrigeration circuit inside the refrigerator main body. In refrigerators, cooling of the coolers that are heat exchangers is performed. By the action, the internal temperature of the refrigerator main body is adjusted to a predetermined cold temperature. In a warm storage, the inside of the refrigerator main body is heated by a heating action of a condenser which is a heat exchanger. The temperature is adjusted to a predetermined warm temperature.
[0003]
However, in these refrigerators and storages such as hot storages, heat exchangers such as coolers and condensers are not parts that are frequently cared for on a daily basis, and are therefore installed in hard-to-care parts. It is common. However, the heat exchanger is in a humid environment where bacteria such as various bacteria and molds are likely to be generated. , The antibacterials may be proliferated. For this reason, in the heat exchanger, it is desired that bacteria are not generated and bacteria do not grow even in a humid environment.
[0004]
As for the heat exchanger constituting the refrigeration circuit, it has been proposed to provide a means for preventing the generation of bacteria in an evaporator which is a heat exchanger of a vehicle air conditioner, which is a field completely different from a storage. (See, for example, Patent Document 1). Further, regarding the condenser in the refrigerating apparatus, since the condenser is installed outside the refrigerator and organic substances such as oil and garbage generated from kitchen equipment such as a kitchen adhere to the condenser, it decomposes the organic substances that adhere to the condenser. It has been proposed to provide a means for preventing contamination by the use of such a device (for example, see Patent Document 2).
[0005]
[Patent Document 1]
JP-A-10-185357
[Patent Document 2]
JP-A-9-152230
[Problems to be solved by the invention]
However, with respect to the heat exchanger installed inside the main body of the storage and placed in a humid environment, effective means for preventing the generation and growth of bacteria has not yet been proposed. Therefore, an object of the present invention is to provide an effective means for preventing the generation and growth of bacteria in the heat exchanger.
[0008]
[Means for Solving the Problems]
The present invention relates to a storage, and is intended to be applied to a storage provided with a heat exchanger inside a storage main body, wherein the internal temperature of the storage main body is adjusted by a cooling action or a heating action of the heat exchanger.
[0009]
Thus, the heat exchanger in the storage according to the present invention is characterized in that the surface thereof is coated with a paint layer, and the metal powder having antibacterial activity is uniformly dispersed in the paint layer. Things. In the storage according to the present invention, aluminum flake powder (aluminum flake powder) obtained by plating flake aluminum with silver or copper can be used as the metal powder in the paint layer, and silver or copper can be used. As such, fine powder (silver fine powder, copper fine powder) can be used.
[0010]
The storage according to the present invention is a refrigerator having a cooler as a heat exchanger, and a warm storage having a condenser as a heat exchanger. In the refrigerator, the surface of the cooler is characterized by being coated with a paint layer in which metal powder having antibacterial activity is uniformly dispersed, and in the storage, The surface of the condenser is covered with a paint layer in which metal powder having antibacterial activity is uniformly dispersed.
[0011]
[Action and Effect of the Invention]
In the storage according to the present invention, a heat exchanger such as a cooler or a condenser disposed inside the storage body is covered with a paint layer in which metal powder having antibacterial activity is uniformly dispersed. Thus, the surface of the heat exchanger has an antibacterial action. For this reason, even when the heat exchanger is in a humid environment and bacteria are easily generated and the environment where bacteria are easily proliferated, bacteria may be generated on the surface of the heat exchanger. It does not proliferate.
[0012]
In the storage according to the present invention, as the metal powder having an antibacterial property dispersed in the paint layer covering the surface of the heat exchanger, fine powder of silver or copper itself can be used, and flakes can be used. Aluminum flake powder obtained by plating silver or copper on aluminum in a shape can be used.
[0013]
Metals such as silver and copper have a higher specific gravity than paints and are difficult to disperse uniformly in paints.However, by making these metals into fine powders, uniform dispersibility in paints can be improved. it can. Aluminum flake powder obtained by plating silver or copper on aluminum in the form of flakes has a relatively small specific gravity of aluminum as compared with silver or copper, and the difference in specific gravity with paint is smaller. Therefore, the aluminum flake powder has an advantage that the uniform dispersibility in the paint can be further improved.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention relates to a storage, and FIG. 1 schematically shows the inside of a refrigerator which is an example of the storage according to the present invention. The refrigerator includes a refrigerator main body 11, an opening / closing door 12 for opening and closing a front opening of the refrigerator main body 11, a refrigerator 13, a cooler 14, and a fan 15 for the refrigerator. The refrigerator 13 and the cooler 14 are components that constitute a refrigeration circuit. The refrigerator 13 is disposed on the upper surface side of the upper wall of the refrigerator main body 11, and the cooler 14 is disposed inside the refrigerator main body 11. Is arranged at the upper part. The cooler 14 constitutes a heat exchanger in the refrigeration circuit, and is cooled by the operation of the refrigerator 13. The cooled cooler 14 discharges cold air and exchanges heat with the surrounding air to cool the surrounding air. The cooled air (cold air) is circulated and supplied to the cooling chamber R inside the refrigerator main body 11 through the duct 16 by the drive of the fan 15, and cools the food items F and the like stored in the cooling chamber R. In addition, the code | symbol 17 in a figure is a shelf network for mounting the foodstuffs F etc.
[0015]
In the refrigerator, during the operation of the refrigerator 13, the moisture inside the refrigerator main body 11 freezes in a frost form on the surface of the cooler 14, and when the operation of the refrigerator 13 is stopped, frost-like icing occurs. Dissolves into water droplets. Therefore, the surface of the cooler 14 is in a state where it is always exposed to a humid environment, and bacteria are easily generated and bacteria are easily proliferated. In the refrigerator, the surface of the cooler 14 is coated with a paint layer having an antibacterial activity in order to prevent the generation and growth of bacteria on the surface of the cooler 14, and the surface of the cooler 14 has an antibacterial action. Has been granted.
[0016]
As a paint forming a paint layer covering the surface of the cooler 14, a paint obtained by uniformly dispersing a metal powder having an antibacterial activity in a clear paint or an enamel paint is employed. As the metal powder, aluminum flake powder obtained by plating silver or copper on flake aluminum is adopted. Silver and copper are known as metals having antibacterial activity, but have specific gravities of 10.5 (silver) and 8.93 (copper), which are larger than paints. In contrast, aluminum has a specific gravity of 2.7, which is smaller than silver and copper.
[0017]
Therefore, the aluminum flake powder has an antibacterial activity due to silver or copper, but is considerably smaller than the specific gravity of silver or copper. Thereby, the aluminum flake powder is close to the specific gravity of the paint to be dispersed, and has good dispersibility in the paint. Therefore, the aluminum flake powder is substantially uniformly dispersed in the paint layer, imparts antibacterial activity to the paint layer, and imparts an antibacterial action to the surface of the cooler 14 evenly.
[0018]
As described above, in the refrigerator, the cooler 14 is disposed in the duct 16 inside the refrigerator main body 11 and is hardly cared for, and various bacteria and bacteria such as molds are generated. It is located in an easily humid environment. However, since the surface of the cooler 14 is covered with a paint layer having an antibacterial activity and has an antibacterial action, the generation of antibacterials on the surface of the cooler 14 and its proliferation are prevented.
[0019]
The storage according to the present invention is applied not only to a refrigerator but also to a refrigerator. In the refrigerator, a condenser as a heat exchanger is disposed at substantially the same position as a cooler 14 as a heat exchanger of the refrigerator shown in FIG. In other words, similarly to the cooler 14, the condenser of the refrigerator is located in the duct 16 inside the refrigerator main body 11 and is located at a site that is difficult to care for. It is placed in a humid environment where bacteria are likely to develop. For this reason, in the present invention, the surface of the condenser is covered with a paint layer in which the aluminum flake powder is substantially uniformly dispersed. As a result, the surface of the condenser has an antibacterial action due to the paint layer, similarly to the surface of the cooler 14, so that the generation and proliferation of antibacterials on the surface are prevented.
[0020]
In the refrigerator 14 of the refrigerator and the condenser of the storage room, a paint in which the aluminum flake powder is substantially uniformly dispersed is employed as a paint for forming a paint layer covering the surface. However, in the present invention, a paint in which silver or copper fine powder (metal fine powder) is substantially uniformly dispersed can be used instead.
[0021]
When silver and copper are adopted as the metal having antibacterial activity, the specific gravity of silver is 10.5 and the specific gravity of copper is 8.93, which is extremely large as compared with the specific gravity of the paint. It is a big problem. In the present invention, when silver and copper are employed as the metal having antibacterial activity, these metals are prepared into fine powder to improve the dispersibility. However, the dispersibility of the metal fine powder in the paint does not reach the aluminum flake powder.
[Brief description of the drawings]
FIG. 1 is a side view schematically showing the inside of a refrigerator main body as an example of a storage according to the present invention.
[Explanation of symbols]
11 ... refrigerator main body, 12 ... opening and closing door, 13 ... refrigerator, 14 ... cooler, 15 ... refrigerator fan, 16 ... duct, 17 ... shelf net, F ... food, R ... cooling room.

Claims (5)

A storage provided with a heat exchanger inside the refrigerator main body, wherein the internal temperature of the refrigerator main body is adjusted by a cooling action or a heating action of the heat exchanger, and a surface of the heat exchanger is coated with a paint layer. And a metal powder having an antibacterial activity uniformly dispersed in the paint layer. 2. The storage according to claim 1, wherein the metal powder in the paint layer is aluminum flake powder obtained by plating silver or copper on flake aluminum. 2. The storage according to claim 1, wherein the metal powder in the paint layer is a silver or copper fine powder. The storage according to any one of claims 1 to 3, wherein the storage is a refrigerator having a cooler as a heat exchanger, and the surface of the cooler has metal powder having antibacterial activity dispersed uniformly. A storage, characterized by being coated with a coating layer. The storage according to any one of claims 1 to 3, wherein the storage is a warm storage having a condenser as a heat exchanger, and the surface of the condenser has a uniform antibacterial metal powder. Characterized by being coated with a paint layer dispersed in the storage.

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