KR100547073B1 - Refrigerator - Google Patents

Abstract

SUMMARY OF THE INVENTION An object of the present invention is to provide a refrigerator which enables deodorization of not only methyl mercaptan but also trimethylamine, and is provided with a maintenance-free deodorizing antibacterial material having a long service life.

A deodorizing antibacterial material containing a polyphenol compound component and the negative ion generator which consists of minerals is provided.

Cold room, vegetable room, vegetable container, deodorant antibacterial material, cold passage

Description

Refrigerator {REFRIGERATOR}

1 is a longitudinal sectional view of the refrigerator of the present invention;

FIG. 2 is a perspective view showing a lattice-shaped molded article according to the embodiment of the deodorizing antibacterial material of FIG. 1; FIG.

3 is a top view of the lattice-shaped molded body shown in FIG.

Figure 4 is a perspective view of another embodiment deodorant antibacterial material.

5 is a top view of the deodorizing antimicrobial agent shown in FIG.

<Explanation of symbols for main parts of the drawings>

1: refrigerator body

2: cold storage room

3: cold storage door

4: Vegetable Room

4a: vegetable container cover

4b: vegetable container

5: vegetable compartment door

6: refrigerator compartment fan

7: refrigerator compartment cooler

8a: upper freezer

8b: lower freezer

11: freezer cooler

12: compressor

13: cold passage

14-16: deodorant antibacterial material

This invention relates to the refrigerator provided with the deodorizing antibacterial material which can remove a bad smell and can prevent propagation of various germs.

As a refrigerator having a conventional deodorizing function, as described in Japanese Patent Laid-Open No. 2001-91145, a moisture-absorbing fiber that absorbs and releases moisture in a storage compartment, and a deodorizing fiber that decomposes and deodorizes a malodorous component in the storage compartment are used. The deodorizing material formed by mixing and integrally adsorbs and retains moisture and malodorous components in the storage chamber, and decomposes and deodorizes malodorous components to release clean water.

Moreover, what is described in Unexamined-Japanese-Patent No. 5-203336 forms the deodorizing antibacterial filter which carries out deodorization and antibacterial by incorporating silver into the catalyst which has a manganese oxide as a main component, and a deodorizing antibacterial filter in the cold air circulation passage in a refrigerator. It is possible to remove odor and various germs when contaminated cold air passes through.

 However, the mixture of the hygroscopic fiber and the deodorant fiber described in Japanese Unexamined Patent Publication No. 2001-91145 is chemical adsorption of only sulfur-based components, which are the main components of vegetable decay odor, in the refrigerator odor, and amine-based odor, which is the main component of fish decay odor. Can not be deodorized.

In addition, the deodorizing reaction requires an action of adsorbing odors, and water is used as the adsorbent. However, the hygroscopic fibers sensitive to ambient moisture are dependent on the humidity environment in the refrigerator, and the moisture must be absorbed when there are many odors to be removed. I cannot say that there are many.

In addition, since the reaction with the odor is caused by contact with the deodorizing antibacterial material, the surface area of the deodorizing antibacterial material is greatly affected, but since the fiber is used as the deodorizing antibacterial material, a large filter is required to secure a large surface area. there is a problem.

On the other hand, what is described in Unexamined-Japanese-Patent No. 5-203336 uses the honeycomb molded structure mixed with the ceramics which has a porous structure, and is compact and has a large surface area. However, this prior art uses a manganese catalyst which exhibits a catalytic reaction only to methyl mercaptan, like Japanese Unexamined Patent Application Publication No. 2001-91145, and thus cannot deodorize trimethylamine.

In general, the catalytic reaction is said to have a higher performance in the dry state than in the wet state, and it is unclear whether the effect of the manganese catalyst is maximized in the refrigerator in a high humidity environment.

It is a first object of the present invention to provide a refrigerator having deodorant antibacterial material which is capable of deodorizing not only methyl mercaptan but also trimethylamine, and has a long service life.

Moreover, the 2nd object of this invention is to provide the refrigerator provided with the deodorizing antibacterial material which is compact and has high deodorizing antibacterial performance.

The said 1st objective is achieved by providing the deodorizing antibacterial material containing the polyphenol compound type component and the negative ion generator which consists of minerals. Moreover, it is preferable that a polyphenol compound type component is green tea polyphenol.

The said 2nd objective is achieved by a deodorizing antimicrobial material mixing and baking a polyphenol compound type component, a sepionite, a 1st copper oxide, the negative ion generator which consists of a mineral, and a silica. Moreover, it is preferable that a deodorizing antimicrobial material makes the specific surface area 100-300 m <2> / g.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

1 is a longitudinal sectional view of a refrigerator which is an embodiment of the present invention. The refrigerator main body 1 is equipped with the refrigerator compartment 2, the vegetable compartment 4, the upper freezer compartment 8a, and the lower end freezer compartment 8b from the upper part, The refrigerator compartment door 3 becomes a rotating door, and the vegetable compartment door ( 5) and freezer door are withdrawable door.

In the inside of the vegetable chamber 4, the vegetable container 4b which improves sealing property and indirectly cools, and the vegetable container cover 4a are arrange | positioned, and indirect cooling is performed in the state which kept the vegetables to be stored at high humidity.

The rear part of the vegetable compartment 4 arrange | positions the refrigerator compartment fan 6 and the refrigerator compartment cooler 7, and the air cooled by the refrigerator compartment cooler 7 flows into the refrigerator compartment 2 via the cold passage 13. The cold air in the refrigerator compartment 2 flows out from the hole provided between the refrigerator compartment 2 and the vegetable compartment 4, flows into the vegetable compartment 4, and is cooled by the refrigerator compartment cooler 7 after that. The refrigerating chamber cooler 7 and the freezing chamber cooler 11 are connected to the compressor 12 by a pipe to form a refrigerating cycle.

The aforementioned cold air passage 13 is a portion where cold air for cooling the refrigerating compartment 2 and the vegetable compartment 4 is concentrated, and the deodorizing antibacterial material 14 can be effectively deodorized and antibacterial by being installed in this cold air passage 13. have.

The deodorizing antibacterial material 14 contains a polyphenol compound-based component, a sepiolite, a cuprous oxide, a negative ion generator composed of a mineral, and silica. As a result, the deodorizing antibacterial material 14 can remove not only sulfur-based components but also amine-based odors that have been difficult to remove.

Table 1 shows the compressive strength, deodorizing performance, and comprehensive evaluation by forming a deodorizing antimicrobial material having a mixture ratio of polyphenol compound-based components, sepiolite, cuprous oxide, mineral ion, and silica mixed in proportion. .

The deodorizing antibacterial material was formed as a box member having a grid-like wall, as shown in the perspective view of FIG. 2 and the top view of FIG. 3, and was installed in the cold air passage 13 shown in FIG. Deodorization performance is obtained by introducing methyl mercaptan as a malodorous substance into the refrigerator, analyzing the methyl mercaptan concentration by gas chromatography, and determining the concentration of the methyl mercaptan by changing the concentration in the refrigerator in the elapsed time. The methyl mercaptan residual ratio after 60 minutes has been set to 20% or less.

The compressive strength is evaluated when the force is applied from the direction indicated by the arrow of Fig. 2 by an Amsler type universal testing machine, and is set to 1.47 MPa or more in which no crack or the like occurs in the assembling work or the like.

Comprehensive evaluation sets it as (double-circle) when both compressive strength and deodorization performance are (double-circle), and makes x the other than that.

additive Composition of the molded article (wt%) Polyphenol Compound Component One One 5 5 5 15 20 30 30 Sepiolite 90 80 80 70 60 60 60 50 40 Cuprous oxide 5 10 5 5 20 10 10 5 10 Negative ion generator composed of mineral 3 4 5 15 10 10 7 10 5 Silica One 5 5 5 5 5 3 5 15 Compressive strength ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ × Deodorization performance × ◎ × × ◎ ◎ ◎ × ◎ Total evaluation × ◎ × × ◎ ◎ ◎ × ×

The polyphenol compound component is a component that improves the deodorizing antibacterial performance, and in particular, the deodorizing performance of the sulfur-based component can be greatly improved by coexisting copper oxide.

The polyphenol compound-based component also leads to an improvement in product image that it is preferable to use tea-derived components such as tea powder, tea extract, tea tannin, tea saponin and the like. In addition, these tea-derived components have good antibacterial properties, and have been used for drinking for a long time and are very safe. In this embodiment, green tea polyphenol is used as the polyphenol compound-based component.

When the polyphenol compound component is less than 1% by weight, deodorizing antibacterial performance cannot be expected. When the polyphenol compound component exceeds 15% by weight, it becomes gradually difficult to secure the strength required as a molded article.

Sepiolite is a component which ensures the strength required as a molded body, and a zeolite can also be used. In addition, you may use either a natural mineral or an artificial mineral for sepiolite.

If it is 40 weight% or less, the intensity | strength will gradually weaken, and if it is less than 20 weight%, the effect cannot be anticipated and it will lack strength. In addition, if the content of sepiolite exceeds 83% by weight, the content of the component having a deodorizing antibacterial action is relatively reduced, so that the deodorizing antibacterial performance gradually decreases.

Copper oxide is a component that improves the deodorizing performance and the antibacterial performance. In particular, the copper oxide can significantly improve the deodorizing effect of the sulfur-based component by coexisting with the polyphenol compound-based component.

If the cuprous oxide is less than 10% by weight, deodorizing antibacterial performance cannot be expected. If the cuprous oxide is more than 30% by weight, it is difficult to secure the strength required as the molded body.

A negative ion generator composed of minerals is a component that improves deodorizing performance and antibacterial performance, and in particular, coexists with a polyphenol compound-based component to greatly improve the regeneration of polyphenol after reacting with malodor.

As a specific mineral, tall marine, garnet, etc. can be used suitably, and it is preferable to mix the pulverized tall marine and monazite among these, since the generation amount of negative ions is large.

When the negative ion generator made of mineral is less than 5% by weight, the deodorizing antibacterial performance is weak, and when the negative ion generator made of the mineral exceeds 15% by weight, it becomes gradually difficult to secure the strength required as the molded body.

Silica is a component that improves deodorizing performance and antibacterial performance. In particular, the polyphenol compound-based component is inherently familiar with water solubility or water, so that the antimicrobial or deodorizing component can be eluted and prevented from being obtained.

If the silica is less than 1% by weight, deodorizing antibacterial performance cannot be expected, and if the silica is more than 10% by weight, it becomes increasingly difficult to secure the strength required as the molded body.

The means for mixing and kneading the five components described above is not particularly limited, and a known kneader may be used as appropriate. After kneading | mixing, it shape | molds to a target shape, and it drys and bakes to become a deodorizing antibacterial material.

The shape of the deodorizing antibacterial material can be made into various shapes such as pallets, beads, rings, honeycombs, lattice, integrated mass of linear extrusion molding.

The reaction between the antimicrobial deodorant and the odor is caused by the odor component coming into contact with the deodorant antibacterial material, and thus the surface area of the deodorant antibacterial material greatly influences. Moreover, since the contact efficiency with cold air containing a bad smell is improved, when a deodorizing antimicrobial material is arrange | positioned so that a cold air path may be clogged, ventilation resistance will become large and cooling performance will fall. Therefore, the deodorizing antibacterial material is preferably one in which the hole in the ventilation passage is open.

Since the strength of a molded article made into a deodorizing antimicrobial material can be obtained so that drying temperature is high, it is preferable to bake at high temperature. However, when fired at a high temperature, the surface of Sepiolite [Si ₁₂ Mg ₈ 0 ₃₀ (OH) ₄ (OH ₂ ) ₄ · 8H ₂ 0] having a three-layer structure in which the octahedral magnesium layer is sandwiched by the tetrahedral silica layer is vitrified It loses the high surface area that a hole is formed between three layers which are characteristic of sepiolite and discontinuously arrange.

Thus, 13 molded articles were prepared under the same conditions of mixing and drying the above five components, and fired at 180 ° C, 250 ° C, 400 ° C, 500 ° C and 800 ° C as shown in Table 2. The deodorizing antibacterial material (16) of the honeycomb structure shown in 5 was obtained. And, these 13 deodorizing antibacterial materials 16 were evaluated by measuring the specific surface area, deodorizing performance, and compressive strength. As a result, it is preferable that the temperature at the time of baking is 400-500 degreeC, and it is preferable that a specific surface area is 100-300 m <2> / g.

number Firing temperature Specific surface area Deodorization performance Compressive strength One 180 ℃ 700 ◎ × 2 500 ◎ × 3 650 ◎ × 4 250 ℃ 500 ◎ × 5 480 ◎ × 6 520 ◎ × 7 400 ℃ 500 ◎ ◎ 8 280 ◎ ◎ 9 500 ℃ 420 ◎ ◎ 10 80 × ◎ 11 250 ◎ ◎ 12 800 ℃                                              80 × ◎ 13 30 × ◎

When the deodorizing mechanism is explained, the deodorizing antibacterial material containing polyphenol has many OH groups, for example, chemically reacts with methyl mercaptan which is a main component of the decaying smell of vegetables, and performs deodorization by following formula.

ROH + CH ₃ SH → (2H ₂ O) → ROSH + CO ₂ + 4H ₂

Similarly, ammonia, which is a main component of the decaying smell of fish and meat, is chemically reacted and deodorized as in the following formula.

ROH + NH ₃ → RONH ₄

However, this has a limit in deodorization and decomposition of organic substance which exist in a large amount. However, polyphenols deodorize and decompose chemically with odors or organic substances, but OH groups are regenerated by moisture in the refrigerator. Regeneration of the thing which chemically reacted with methyl mercaptan is shown by a following formula.

ROSH + 2H ₂ O → ROH + sulfur oxide + 2H ₂

In addition, the regeneration of the chemical reaction with ammonia is shown in the following formula.

RONH ₄ + H ₂ O → ROH + NH ₄ OH

Therefore, since much moisture generated from food exists in the refrigerator, the polyphenol can be regenerated.

Here, the role of the negative ion generator which consists of minerals is demonstrated. The negative ion generator used in the present invention is derived from natural minerals and spontaneously generates negative ions. The negative ion generator, which is a mineral, was considered to be capable of producing a lattice-shaped molded product, and as a result of earnest examination, a molded product having a large specific surface area could be prepared by mixing with a polyphenol compound-based component. And negative ions always generate | occur | produce from this molded object, and since this negative ion is easy to adsorb | suck with moisture, the circumference | surroundings of a molded object become high humidity. This molded article has fine pores like activated carbon and has a large specific surface area, so that the surrounding water is physically adsorbed, and the adsorbed water is effectively utilized for the regeneration reaction of polyphenols reacted with malodor. Therefore, since negative ions are always generated without being affected by the humidity in the refrigerator, it is possible to always supply the molded body with the moisture necessary for the regeneration of the polyphenol, and the deodorizing antibacterial material of the present embodiment adsorbs the odor component. And regeneration is repeated and a long life is maintenance free.

 As described above, the present invention enables the deodorization of not only methyl mercaptan but also trimethylamine, and can provide a refrigerator provided with a maintenance-free deodorizing antibacterial material having a long life. In addition, the present invention can provide a deodorizing antibacterial material having a compact and high deodorizing antibacterial performance.

Claims (4)

A refrigerator comprising: a deodorizing antibacterial material comprising a polyphenol compound component and a negative ion generator composed of a mineral mixed with the polyphenol compound component and a negative ion generator. The refrigerator according to claim 1, wherein the polyphenol compound-based component is green tea polyphenol. The refrigerator according to claim 1, wherein the deodorizing antibacterial material is calcined by mixing a polyphenol compound-based component, a sepiolite, a cuprous oxide, a negative ion generator composed of a mineral, and silica. The refrigerator according to any one of claims 1 to 3, wherein the deodorizing antibacterial material has a specific surface area of 100 to 300 m 2 / g.

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