JP2005049067A - Deodorizing device and refrigerator using the same - Google Patents

Abstract

[PROBLEMS] To effectively deodorize a room in a deodorizing apparatus capable of decomposing and deodorizing an odor component without using an ultraviolet lamp and a catalyst always in an excited state, and a refrigerator using the deodorizing apparatus. In addition, it is equipped with a dedicated control device that can decompose and deodorize odor components in the refrigerator without obstructing the circulation of cold air, and does not require power, and has a deodorizing device that improves assembly and saves energy Provide a refrigerator.
SOLUTION: A deodorizing device 18 is a honeycomb made of an ion plate 19 having a hole shape obtained by kneading natural ore that generates a trace amount of radiation in a synthetic resin, and a special paper coated or impregnated with titanium oxide powder. The deodorizing device 18 is arranged in the upper cover 16 in the return ventilation path 17 through which the cold air circulated in the refrigerator compartment 3 and the vegetable compartment 5 passes.
[Selection] Figure 2

Description

  The present invention relates to a deodorizing apparatus and a refrigerator using the deodorizing apparatus, and more particularly to a structure of a deodorizing apparatus that improves assembly and saves energy.

  FIG. 1 is a side cross-sectional view of a main part showing a refrigerator compartment in a refrigerator.

  A door 2 that can be freely opened and closed is provided on the front surface of the refrigerator body 1, and a storage place including a shelf 4 is provided inside the refrigerator compartment 3. An evaporator 12 and a blower 13 are provided behind the refrigerating chamber 3, and the cool air sent from the blower 13 is blown out from the front upper portion into the cabinet, and an inlet 15 is provided for each shelf 4 in the refrigerating chamber 3. The cool air is sucked into the return ventilation path 17 from the rear in the cabinet, and the cold air circulated from the refrigerator compartment 3 through the vegetable compartment 5 returns to the lower side of the evaporator 12 through the return ventilation path 17. Yes. The return passage 17 is provided with a deodorizing device for deodorizing the inside of the cabinet.

  In addition, a freezer compartment 6 that can be pulled out is arranged below the refrigerating compartment 3 by a partition wall, and is provided with an evaporator 7 and a blower 8 behind the freezer compartment 6. Is blown through the ventilation path 9 and blown out from the air outlet 9a provided in the upper part or rear part of the freezer compartment 6.

  By the way, since the catalytic reaction represented by titanium oxide has a very strong oxidizing power, harmful substances such as malodor can be decomposed even with relatively weak ultraviolet rays. Therefore, a deodorizing apparatus using such a catalyst is also used in a refrigerator. A catalyst layer is formed on the surface of an adsorbent that adsorbs odorous components, and light is emitted from a light source that excites the catalyst layer. The odor component adsorbed by the adsorbent is decomposed to maintain the deodorizing effect for a long period of time (see, for example, Patent Document 1).

However, an ultraviolet lamp is used as an excitation source for exciting the catalyst. Since the ultraviolet lamp causes discoloration and deterioration of plastics or the like, a plurality of light shielding plates are provided before and after the apparatus so that ultraviolet rays do not leak outside the apparatus. It was a fairly complicated structure. For this reason, there existed a problem which may become the cost increase by the difficulty of workability | operativity and the increase in a number of parts. Therefore, an excitation source that excites the catalyst without using an ultraviolet lamp has been awaited.
JP-A-1-189322 (page 2-5, FIG. 8)

  In view of the above-described problems, the present invention provides a deodorizing apparatus that does not use an ultraviolet lamp and the catalyst is always in an excited state and can decompose and deodorize odor components, and a refrigerator using the deodorizing apparatus. Effective deodorization and decomposition and deodorization of odor components in the refrigerator without hindering the circulation of cold air, eliminating the need for a dedicated control device and power, improving assembly and saving energy It aims at providing the refrigerator provided with the intended deodorizing apparatus.

  In order to solve the above-mentioned problems, the present invention has a configuration in which a plate containing ore that generates radiation and a filter containing a metal oxide are combined in a deodorizing apparatus for removing odor.

  Further, in a refrigerator comprising a deodorizing device for deodorizing the inside of a refrigerator in a cold air circulation path, a deodorizing device that combines a plate containing radiation ore and a filter containing a metal oxide. Is provided.

  The filter has a structure in which titanium oxide powder is applied or impregnated on special paper formed in a honeycomb shape.

  According to the deodorizing apparatus of the present invention, by using ore that generates radiation without using an ultraviolet lamp, the radiation emitted from the ore can always excite the catalyst and decompose and deodorize odor components. A dedicated control device that can effectively deodorize the room indoors and decompose and deodorize the odor components in the refrigerator without hindering the circulation of cold air. It is a refrigerator equipped with a deodorizing device that does not require any electric power and improves assembly and saves energy.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail as examples based on the attached drawings.

  FIG. 1 is a side sectional view of a main part of a refrigerator of the present invention, FIG. 2 is an enlarged perspective view of a main part showing the arrangement of a deodorizing apparatus according to the present invention, and FIG. 3 is a honeycomb filter constituting the deodorizing apparatus of the present invention. FIG. 4 is a top view of an ion plate in which ore that generates radiation constituting the deodorizing apparatus of the present invention is incorporated, and FIG. 5 is an enlarged view of a main part for explaining the excitation source of the catalyst according to the present invention. It is sectional drawing.

  FIG. 1 shows a sectional side view of a main part of a refrigerator compartment in the refrigerator of the present invention. This will be described with reference to the drawings. A front and rear door 2 that can be opened and closed is provided on the front surface of the refrigerator main body 1 that is formed of a heat-insulated box that is open on the front surface, and a storage space that includes a shelf 4 is provided inside the refrigerator compartment 3.

  The refrigerator compartment 3 is arranged in the upper part, and the vegetable compartment 5 or the freezer compartment 6 configured to be freely drawn out is arranged in the lower part. The freezer compartment 6 is provided with an evaporator 7 and a blower 8 behind the freezer compartment 6. The cool air is blown through the ventilation path 9 formed of a duct by the air 8 and blown out from the cool air outlet 9a provided at the upper part or the rear part of the freezer compartment 6.

  A second evaporator 12 for generating cold air is provided on the back side of the upper part inside the heat insulating box 1 in the rear of the refrigerator compartment 3, and a second blower 13 for delivering the generated cold air is provided on the upper part to provide heat insulation. The cool air sent out from the second blower 13 is blown out from the front upper outlet 14a into the cabinet through the ventilation path 14 formed of a duct provided in the vertical direction on the back side of the box 1, and each shelf Cool air is returned from the cover 16 provided with the suction port 15 at the back of the interior every four times, and circulated by sucking it into the ventilation passage 17. Further, the cold air circulated from the refrigerator compartment 3 through the vegetable compartment 5 is returned to the lower side of the second evaporator 12 through the return ventilation path 17.

  FIG. 2 is an enlarged perspective view of the main part seen from the back surface of the cover 16 showing the location of the deodorizing device according to the present invention. As shown in the figure, the deodorizing device 18 according to the present invention is a natural ore that generates a small amount of radiation. An ion plate 19 made of the above and a honeycomb filter 20 containing titanium oxide are combined, and the upper cover 16 in the return ventilation path 17 through which the cold air circulated in the refrigerator compartment 3 and the vegetable compartment 5 passes is provided. The cold air from the second evaporator 12 circulates in the refrigerator compartment 3 and the vegetable compartment 5, then passes through the return ventilation path 17, passes through the deodorizing device 18, and is placed below the second evaporator 12. I'm going back.

  As shown in FIG. 3, the honeycomb filter 20 of the deodorizing device 18 is a honeycomb body 20a made of special paper coated or impregnated with titanium oxide powder, and functions to quickly adsorb a large amount of odor. When titanium oxide is irradiated with energy greater than the band gap, two carriers of electrons and holes are generated. The generated electrons and holes react with oxygen and water present on the contact surface to generate hydroradicals (.OH) and superoxide anions (O2￣), which react with various harmful organic compounds and decompose. To do.

  As shown in FIG. 4, an ion plate 19 made of a natural ore that generates a small amount of radiation d is a plate made by kneading a rare earth natural ore containing a radioactive material such as radium or thorium oxide in a synthetic resin. Thus, by making the ion plate 19 into a shape with holes 19a and 19b (or mesh structure or the like), the ventilation resistance can be reduced and the radiation d can be evenly distributed throughout the honeycomb filter 20. . Therefore, the odor easily contacts and decomposes with the titanium oxide of the honeycomb filter 20 and can be efficiently deodorized.

  As shown in the enlarged cross-sectional view (A) of the main part for explaining the excitation source of the catalyst according to the present invention in FIG. 5 and the schematic diagram (B) of the deodorizing mechanism, the deodorizing device 18 is a natural substance that generates a small amount of radiation d. This is a combination of an ion plate 19 kneaded with ore and a honeycomb filter 20 coated or impregnated with titanium oxide, adsorbs the passing odorous substance a, ethylene gas b and airborne bacteria c, and produces a trace amount of radiation. Radiation d of ion plate 19 kneaded with natural ore that generates d activates the surface of titanium oxide of honeycomb filter 20 to form a superoxide anion and a hydroxy radical, which is combined with odorous substance a to produce odor Change substance a to odorless substance e.

  The radiation d from the ion plate 19 kneaded with natural ore that generates a trace amount of radiation d excites the titanium oxide of the honeycomb filter 20 and decomposes the adsorbed odorous substance a, ethylene gas b, and airborne bacteria c. The deodorizing device 18 is constituted by both of them. The present invention makes it possible to achieve high deodorization performance at low cost without deteriorating the cooling performance of the refrigerator, without giving a high volumetric disadvantage.

  The honeycomb filter 20 may be a honeycomb body 20a made of special paper coated or impregnated with a powder of metal oxide such as tungsten oxide or zinc oxide instead of titanium oxide.

  Further, instead of the ion plate 19 in which a natural ore that generates a small amount of radiation d is kneaded, paper or a metal plate coated with a natural ore that generates a small amount of radiation d may be used.

  Although the deodorizing device 18 according to the present invention is disposed at the upper cover 16 in the return ventilation path 17 in the above embodiment, it is disposed below the second evaporator 12, or in the ventilation path 14 or the outlet 14a. (Not shown).

  Furthermore, in this embodiment, the refrigerator deodorizing device 18 is used, but it can also be used as a deodorizing device for other products.

  In the above-described configuration, the natural radiation-containing ore powder is formed into a plate shape with latticed holes and combined with a honeycomb filter carrying titanium oxide to reduce ventilation resistance and equalize radiation d. Can be distributed in the honeycomb filter. Therefore, even if it is installed in the return ventilation path 17 of the refrigerator, the odor can be easily contacted and decomposed with the honeycomb filter without deteriorating the cooling performance, and can be efficiently deodorized. In addition, no dedicated control device or electric power is required, and wasteful energy is not consumed. Titanium oxide is always in an excited state, and it is possible to decompose and deodorize odor components in the refrigerator. Problems that may increase costs due to an increase in the number of points can be eliminated.

It is principal part side sectional drawing in one Example of the refrigerator of this invention. It is a principal part expansion perspective view which shows arrangement | positioning of the deodorizing apparatus by this invention. It is a top view (A) of the honeycomb filter which comprises the deodorizing apparatus of this invention, and is a principal part enlarged top view (B) showing a honeycomb form. It is a top view of the ion plate which kneaded the ore which generates the radiation which comprises the deodorizing apparatus of this invention. It is the principal part expanded sectional view (A) explaining the excitation source of the catalyst by this invention, and the figure (B) which modeled the deodorizing mechanism.

Explanation of symbols

1 Refrigerator body (insulation box)
2 Door 3 Refrigerated room 4 Shelf 5 Vegetable room 6 Freezer room 7 Evaporator 8 Blower 9 Ventilation path 9a Air outlet
12 Evaporator
13 Blower
14 Ventilation path
14a outlet
15 Suction port
16 Cover
17 Return ventilation
18 Deodorizer
19 Ion plate
20 Honeycomb filter

Claims (3)

  A deodorizing apparatus for removing odor, comprising a combination of a plate containing ore that generates radiation and a filter containing a metal oxide. In the refrigerator comprising a deodorizing device for deodorizing the inside of the refrigerator in the cold air circulation path,
A refrigerator comprising a deodorizing device in which a plate containing an ore that generates radiation and a filter containing a metal oxide are disposed.   3. The deodorizing apparatus and refrigerator according to claim 1, wherein the filter is formed by applying or impregnating a special paper in which a titanium oxide powder is formed in a honeycomb shape.

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