JPS62252875A - Refrigerator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a refrigerator, and particularly to a refrigerator suitable for deodorizing and sterilizing cold air inside the refrigerator for a long period of time.

[Conventional technology]

Conventional deodorizing devices attempt to remove bad odors by attaching a case containing a deodorizing agent such as activated carbon to a cold air passage. However, in this case, if the deodorizer came into contact with a gas with a slightly higher concentration, the adsorption ability of the deodorizer would immediately decrease, and its effectiveness would diminish in a short period of time. Regarding sterilization, conventional methods have been available in which sterilizing steam is released into the refrigerator, or there has been no deodorizer and sterilizer that has both deodorizing and sterilizing effects. Examples of this rice cultivation apparatus include Japanese Utility Model Application Publication No. 47-22566 and Japanese Utility Model Application Publication No. 58-9692.

[Problem that the invention attempts to solve]

The above-mentioned conventional technology does not give consideration to the long-term stability of the deodorizing and sterilizing effects, and there is a fear that the deodorizing agent and the sterilizing agent may not be highly effective for a long period of time.

An object of the present invention is to provide a refrigerator that can exhibit deodorizing and sterilizing effects for a long period of time.

[Means for solving problems]

The above object is achieved in a cold air forced circulation type refrigerator by installing an ultraviolet edge lamp and a photocatalyst half body in a cold air passage constituting the refrigerator.

[Effect]

At the same time, the sterilizing power of the ultraviolet edge of the ultraviolet edge lamp decomposes the foul-smelling gas contained in the cold air passing through the cold air passage.
Produces long-term stable deodorizing and sterilizing effects.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

1 is a forced cold air circulation refrigerator, 2 is a freezer compartment, 3 is a refrigerator compartment,
4 is a fan for blowing cold air, 5 is a cooler, 6 is a partition, 7 is a cold air passage, 8 is a deodorizing/sterilizing device, and 9 is a cover.

The cold air generated by the cooler 5 circulates within the refrigerator as indicated by the arrows in FIG. The deodorizing/killing m'Jt IIL8 is installed in the cold air passage 7 of the partition 6.

The deodorizing/sterilizing device 8 includes an ultraviolet edge lamp 8a, a photocatalyst 8b divided into upper and lower parts, an aluminum plate 8C for fixing it, and a heat insulating material 8.
It is mainly composed of d. With the deodorizing/sterilizing device 8 installed in the partition 6, by applying an alternating current voltage through a ballast to the electrode 8f via the electric wire &8e, the ultraviolet edge lamp 8a is lit, and the ultraviolet edge is emitted upward and downward. The installed photocatalyst 8b is almost uniformly irradiated and excited. The ultraviolet edge lamp 8a is turned on in synchronization with the cold air blowing fan 4, and is turned on only when the stirring fan 4 is operating.

That is, a photocatalyst is a substance that converts light energy into chemical energy and is a semiconductor. When energy above the band gap is applied to the photocatalyst, the electrons in the valence band jump to the conduction band, creating a polarized state, and the excited electrons in the conductor and the holes generated in the valence body are chemically activated. It will provoke a reaction.

For example, the hydroxyl group OH- on the photocatalyst surface becomes OH due to holes.
The oxidizing power of these OH radicals, which become radicals and have a greater oxidizing power than ozone, causes malodorous components to be oxidized and decomposed.

Furthermore, ultraviolet light is used as the light beam for photocatalytic excitation;
The ultraviolet rays originally have sterilizing power, and can inactivate and destroy nucleic acids in the cells of airborne bacteria in the air passing through it, thereby sterilizing the air it passes through.

To remove the deodorizing/sterilizing device IL8, open the cover 9 by turning the thumb screw 8g by hand, wait for the handle 8h, and then pull it out downward. When assembling, when the deodorizing/sterilizing device 8 is inserted into the partition 6, it is pressed against the cold air passage side by the convex (support) foot odor 8j pushed by the coil spring 81, and the cover 9 is further identified with the hand screw 8g. It is completely fixed by the plate spring 8k.

The cold air that circulates around the refrigerator compartment 3 passes through a deodorizing/sterilizing device 8 and then returns to the cooler through a cold air passage 7.

〔Effect of the invention〕

According to the present invention, it is possible to obtain a refrigerator that exhibits deodorizing and sterilizing effects over a long period of time using an ultraviolet lamp and a photocatalytic semiconductor.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of a refrigerator according to an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the deodorizing/sterilizing device portion of Fig. 1, and Fig. 3 is a sectional view taken along line A-A in Fig. 2. be. 1... Refrigerator, 2... Freezer room, 3... Refrigerator room, 4
... Stirring fan, 5... Cooler, 6... Medium partition, 7... Cold air passage, 8... Deodorizing/sterilizing device, 8a
...Ultraviolet lamp, 8b...Photocatalyst, 8C...Aluminum plate, 8d...Insulating material, 8e...Electrode, 8f...
・Electrode, 8g...Paper hand screw, 8h...Handle, 8
1...Coil spring, 8j...Convex fixture, 8k...
- Plate spring, 9...Cover. -1-1 Figure j

Claims (1)

[Claims] 1. A cold air forced circulation type refrigerator, characterized in that an ultraviolet edge lamp and a photocatalytic semiconductor are installed in the cold air passage constituting the refrigerator.