JP7109501B2 - refrigerator - Google Patents

Description

Embodiments of the present invention relate to refrigerators.

Conventionally, in order to cool and store vegetables and food in a good condition in a vegetable compartment, which is an example of a storage compartment in a refrigerator, to prevent deterioration, the container in the vegetable compartment is made to be a sealed container with high humidity, and the outside of the container is kept inside the closed container. It is said that it is effective to prevent cold air from entering the vegetables directly. However, if cold air is not put into the closed container, condensation will occur due to the moisture that comes out of the vegetables.

Therefore, as disclosed in Patent Document 1, a refrigerator is provided with a partition plate in order to maintain the humidity at a predetermined value. are placed.

JP 2015-124964 A

However, in the refrigerator disclosed in Patent Document 1, the airtight container is filled with odorous substances generated from vegetables and food and ethylene gas, which is a plant aging hormone. Or, ethylene gas will reduce the freshness of vegetables in a closed container. Moreover, odorous substances and ethylene gas may pass through the moisture-permeable membrane of the partition plate and diffuse from inside the closed container into the vegetable compartment and throughout the refrigerator.

The present invention has been made in view of the above, and its object is to deodorize odorous substances and decompose gases such as ethylene in a closed container arranged in a storage room such as a vegetable room, and to store it. To provide a refrigerator capable of improving the freshness of fresh vegetables.

A refrigerator according to an embodiment of the present invention includes a main body having a storage chamber, and an airtight container arranged in the storage chamber, air purification means being arranged on a front side surface of the airtight container, and A moisture-permeable sheet is arranged on the side surface on the rear side.

BRIEF DESCRIPTION OF THE DRAWINGS It is a longitudinal cross-sectional view of the refrigerator concerning 1st Embodiment of this invention. It is a figure which shows typically the structural example of vegetable compartment vicinity shown in FIG. FIG. 4 is an exploded perspective view showing a preferred structural example of the air purifying means; FIG. 3 is a schematic diagram showing an example of a powdery (granular) thermal catalyst carried on a granular structure of the air purifier. FIG. 4 is a schematic diagram showing a nonwoven fabric as a support for supporting a catalyst. FIG. 2 is a schematic diagram showing a net as a carrier that carries a catalyst; FIG. 3 is a schematic diagram showing a three-dimensional multilayer net formed by stacking nets in multiple layers; FIG. 5 is a diagram showing a second embodiment of the present invention; FIG. 10 is a diagram showing a third embodiment of the present invention; It is a figure which shows 4th Embodiment of this invention.

EMBODIMENT OF THE INVENTION Hereinafter, the form (it is hereafter called embodiment) for implementing this invention is demonstrated using drawing.

<First embodiment>
FIG. 1 is a longitudinal sectional view showing the entire refrigerator according to the first embodiment of the present invention.

A refrigerator 1 shown in FIG. 1 has a main body 1A. A main body 1A of the refrigerator 1 has an outer case made up of outer side plates and an inner case made up of inner side plates. It is configured. A plurality of storage chambers are formed inside the main body 1A.

As the plurality of storage compartments, as shown in FIGS. 1 and 2, a refrigerating compartment 2 and a vegetable compartment 3 are provided in order from the top as refrigerating compartments. Under the vegetable compartment 3, an ice making compartment 4 and an upper freezing compartment 5 as freezing compartments are provided side by side, and a lower freezing compartment 6 as a freezing compartment is provided at the bottom.

As shown in FIG. 1 , left and right doors 7 and 8 are provided on the front surface of the refrigerator compartment 2 to open and close the front opening of the refrigerator compartment 2 . The left and right doors 7 and 8 are double doors. Drawer-type doors 9, 10, 11 and 12 for opening and closing the respective front openings are provided on the front surfaces of the vegetable compartment 3, the ice making compartment 4, the upper freezer compartment 5 and the lower freezer compartment 6, respectively.

A structural example of the refrigerator 1 will be further described with reference to FIG. As shown in FIG. 1, a machine room 22 is provided behind the lower freezer compartment 6 of the main body 1A, and a compressor 23 and the like are arranged in the machine room 22. A refrigerator/vegetable compartment cooler 24, an air duct 25, and a cold air circulation fan 26 for refrigeration are arranged behind the vegetable compartment 3 on the rear side of the main body 1A.

In addition, on the rear side of the main body 1A, an ice making compartment (storage compartment) 4, an upper freezing compartment (storage compartment) 5, and a lower freezing compartment 6 are provided with a freezer compartment cooler 27, an air duct 28, and a freezer compartment. A cool air circulation fan 29 is arranged.

The refrigerator/vegetable compartment cooler 24 and the freezer cooler 27 are cooled by the refrigerant supplied from the compressor 23 . The refrigerating compartment 2 and the vegetable compartment 3 are each cooled and maintained at a predetermined set temperature by a refrigerating cool air circulation fan 26 , a refrigerating compartment/vegetable compartment cooler 24 , and an air duct 25 . The ice making chamber 4, the upper freezing chamber 5, and the lower freezing chamber 6 are each cooled and maintained at a predetermined set temperature by a cold air circulation fan 29 for freezing, a cooler 27 for the freezing chamber, and an air duct 28.

Next, a preferable structural example inside the vegetable compartment 3 will be described with reference to FIGS. 1 and 2. FIG. FIG. 2 schematically shows a structural example around the vegetable compartment 3 shown in FIG.

As shown in FIG. 1, in the vegetable compartment 3, a first airtight container 30 and a second airtight container 40 are accommodated in a vertically stacked manner. The first closed container 30 and the second closed container 40 are preferably transparent or translucent plastic containers, and the storage capacity of the first closed container 30 is larger than that of the second closed container 40 . The first closed container 30 is the lower container, and the second closed container 40 is the upper container arranged above the first closed container 30 .

The first airtight container 30 is a box-shaped container having four sides 31 and a bottom surface 32 , and has an upper opening 33 . The second airtight container 40 is a box-shaped container having four side surfaces 41 and a bottom surface 42 , and has an upper opening 43 .

The upper opening portion 33 of the first closed container 30 is closed by the bottom portion 42 of the second closed container 40 so as to be openable and closable. However, the rear side of the upper opening portion 33 of the first sealed container 30 is opened as a rear area opening portion 34 . The rear region opening portion 34 is formed between the rear side portion 31 and the left and right side portions 31 of the first closed container 30 and the bottom portion 42 of the second closed container 40 . An upper opening portion 43 of the second sealed container 40 is closed by a lid member 44 so as to be openable and closable.

Thus, the top opening 33 of the first closed container 30 is substantially sealed by the bottom surface 42 of the second closed container 40, and the top opening 43 of the second closed container 40 is closed by the lid member 44. It is

As shown in FIG. 2, the vegetable compartment 3 is provided in front of the cooling duct 25, which is a cooler compartment. As shown in FIGS. 1 and 2, a moisture-permeable sheet 50 and an air purifier 60 are arranged vertically on the inner surface of the front side portion 31 of the first sealed container 30 . An opening 77 is preferably provided in the front side surface portion 31 , and the moisture permeable sheet 50 and the air purification means 60 are arranged corresponding to the opening 77 . That is, the moisture-permeable sheet 50 and the air purification means 60 are provided inside the front side portion 31 near the drawer-type door 9 side.

Similarly, another moisture-permeable sheet 50 and an air purifier 60 are arranged horizontally in the rear region opening 34 of the first sealed container 30 so as to block the rear region opening 34. It is Accordingly, two sets of the moisture permeable sheet 50 and the air purification means 60 are provided in the first sealed container 30 .

First, the moisture permeable sheet 50 shown in FIGS. 1 and 2 will be described.

The moisture-permeable sheet 50 shown in FIGS. 1 and 2 is, for example, a moisture-permeable waterproof sheet obtained by laminating a polyester long fiber nonwoven fabric and a polyethylene porous film, and has a stable waterproof function, a moisture-permeable function, and a wind ( cold air). This polyester long fiber nonwoven fabric is a base material for arranging a polyethylene porous film.

This moisture permeable sheet 50 has a plurality of holes, and these holes have a plurality of holes with a diameter of, for example, 0.5 μm to 3 μm, and allow water vapor particles of, for example, 0.0004 μm or less to pass through. However, it does not allow water molecules larger than 0.5 μm to 3 μm to pass through. Therefore, the moisture-permeable sheet 50 has both a moisture-permeable function and a waterproof function, which are contradictory.

Cool air circulation fan 26 for refrigerating shown in FIG. At this time, since the moisture permeable sheet 50 is arranged in the rear area opening portion 34 of the first sealed container 30 inside the vegetable compartment 3 shown in FIG. Since the inflow is blocked, the cold air that has flowed into the vegetable compartment 3 will not flow into the first sealed container 30. - 特許庁In addition, since the moisture permeable sheet 50 is arranged corresponding to the opening 77 on the inner surface of the front side surface portion 31 of the first closed container 30, the moisture permeable sheet 50 prevents the inflow of cold air. , the cold air that has flowed into the vegetable compartment 3 does not flow into the first sealed container 30. - 特許庁As a result, the vegetables do not dry out due to the cold air, and the vegetables do not wither.

Moreover, each moisture-permeable sheet 50 has a plurality of holes with a diameter of, for example, 0.5 μm to 3 μm, and water vapor particles can pass through these holes. Therefore, even if the temperature inside the first closed container 30 drops, the water vapor molecules pass through the moisture permeable sheet 50 on the front side and the moisture permeable sheet 50 on the rear region opening 34 to the vegetables from the inside of the first closed container 30 . It can go out into the chamber 3, the saturated water vapor amount is not exceeded in the first sealed container 30, and dew condensation in the first sealed container 30 can also be prevented.

As described above, the plurality of moisture-permeable sheets 50 are positioned at the front side surface portion 31 of the first closed container 30 and the rear region opening portion 34 of the first closed container 30, and are positioned inside the first closed container 30. are placed in Therefore, cold air is prevented from flowing in due to the presence of the plurality of moisture permeable sheets 50 , so cold air does not flow into the first closed container 30 through the rear region opening 34 of the first closed container 30 .

However, odorous substances smaller than the plurality of holes in the moisture permeable sheet 50 of the front side surface portion 31 and the moisture permeable sheet 50 of the rear region opening portion 34, and gases such as ethylene, which is a plant aging hormone, are trapped in the rear region opening portion. It gently passes through the holes of the moisture permeable sheet 50 at 34. Therefore, if the concentration of the odorous substance and the concentration of the gas such as ethylene in the first closed container 30 increases, the odorous substance and the gas such as ethylene will be absorbed into the moisture permeable sheet 50 of the front side surface portion 31 and the rear region opening portion 34. , into the vegetable compartment 3 housing the first closed container 30 and into the refrigerator 1 as a whole.

Therefore, preferably, the air purifying means 60 are provided in the vicinity of each moisture permeable sheet 50 , so that each air purifying means 60 can easily come into contact with the odorant and gas such as ethylene in the first sealed container 30 . As a result, each air purifier 60 can more efficiently purify the malodorous substances and gases such as ethylene in the first sealed container 30, and deodorize and decompose ethylene.

Next, a preferred structural example of the air purifying means 60 shown in FIGS. 1 and 2 will be described.

The air purification means 60 is a catalyst capable of decomposing odorous substances and gases such as ethylene, preferably a thermal catalyst. The thermal catalyst is a noble metal, a metal oxide, or the like capable of decomposing an odorous substance or a gas such as ethylene.

The position where the air purifying means 60 is attached may be inside the first closed container 30 or outside the first closed container 30 as long as it is near the moisture-permeable sheet 50 where odorous substances and gases such as ethylene flow out. can be It is more preferable to install the air purifying means 60 inside the first closed container 30 where food and vegetables are stored in the first closed container 30 and odor substances and gases such as ethylene tend to become highly concentrated. .

As a result, when the concentration of the odorous substance and the concentration of the gas such as ethylene in the first sealed container 30 increases, the air purifying means 60 decomposes the odorous substance and the gas such as ethylene. , from inside the first closed container 30, through the moisture-permeable sheet 50, into the vegetable compartment 3 housing the first closed container 30, and outflow to the entire refrigerator 1 can be prevented.

As the air purifying means 60, a photocatalyst such as titanium oxide or tungsten oxide that exhibits a catalytic action when exposed to light, or a radical or ozone that exhibits an oxidizing action may be used. In this case, for example, an LED (light-emitting diode) can be used as the light-emitting element that irradiates the photocatalyst of the air purification means 60, but it is not particularly limited.

In addition, as the thermal catalyst of the air purification means 60 described above, by using a thermal catalyst made of noble metals such as Pt, Pd, and Au, and metal oxides such as manganese dioxide and copper oxide, the thermal catalyst is different from the photocatalyst. In contrast, it is not necessary to prepare electricity such as a light source or high voltage for causing catalytic action. For this reason, the structure of the refrigerator 1 can be simplified by using a thermal catalyst.

FIG. 3 is an exploded perspective view showing a preferred structural example of the air cleaning means 60. As shown in FIG. FIG. 4 shows an example of a powdery (granular) thermal catalyst 100 carried on a granular structure (catalyst carrier) 65 of the air purification means 60 .

The air purification means 60 shown in FIG. 3 has a granular structure 65 and a case 70 . Ceramics, for example, can be used as the material of the granular structure 65 shown in FIGS. The size of the thermal catalyst 100 is considerably smaller than the size of the granular structures 65 .

The thermal catalyst 100 is in powder form so as to facilitate contact with reaction target substances such as odorous substances and gases such as ethylene. If the thermal catalyst 100 remains in powder form, it will be blown away by cold air. For this reason, since the thermal catalyst 100 is supported on the granular structure 65, the thermal catalyst 100 is not blown away even if cold air blows. Inside and outside, catalysis can be maintained.

A case 70 shown in FIG. 3 is, for example, a plastic container that accommodates the granular structure 65 . The case 70 includes a body portion 71 and a lid portion 72. The lid portion 72 is detachably fitted into the body portion 71, so that the lid portion 72 and the body portion 71 are integrated.

The lid portion 72 has a plurality of elongated holes 72A for ventilation over substantially the entire surface, and the body portion 71 has a plurality of elongated holes 71A for ventilation over substantially the entire surface. Also, as shown in FIG. 3, the lid portion 72 has a plurality of protrusions 72B. These projections 72B allow the case 70 to be detachably attached to the inner surface or the outer surface of the first sealed container 30 shown in FIG. 2, for example.

The minimum dimensions of the ventilation holes 71A and 72A shown in FIG. 3 are set smaller than the dimensions of the granular structure 65 described above. This prevents the granular structure 65 including the thermal catalyst 100 from dropping out of the case 70 and reliably holds the granular structure 65 inside the case 70 . Moreover, since the case 70 has a plurality of elongated holes 72A and 71A for ventilation, the case 70 maintains air permeability, and odorants and gases such as ethylene are carried on the granular structure 65. can be reliably brought into contact with the thermal catalyst 100 that is

Although the granular structures 65 shown in FIGS. 3 and 4 are spheres of the same size, the granular structures 65 may have different diameters. Further, the granular structure 65 is not limited to a sphere, and may have another shape, and is not particularly limited.

By the way, the support for carrying a catalyst such as a thermal catalyst is not limited to the case 70 made of plastic. For example, as shown in FIGS. You may use what was formed in the shape.

FIG. 5 shows a non-woven fabric 110 as a carrier for carrying the catalyst. The nonwoven fabric 110 carries the powdery (granular) thermal catalyst 100 . The nonwoven fabric 110 is formed into a three-dimensional object such as a bag having a volume. As a result, the nonwoven fabric 110 can carry many thermal catalysts 100 .

FIG. 6 shows a net 120 as a support for supporting the catalyst. The mesh 120 carries the powdery (granular) thermal catalyst 100 . More preferably, as shown in FIG. 7, the net 120 can be formed into a three-dimensional multi-layered net 130 by stacking the nets 120 in multiple layers. This allows the multi-layer mesh 130 to support a larger number of thermal catalysts 100 .

In addition, the shape of the structure (support) for supporting the catalyst is not limited to a sphere, and may be a plate-like shape such as a louver or a tubular shape. The support (structure) for supporting the catalyst has a honeycomb shape, and the powdery thermal catalyst 100 is supported on the honeycomb-shaped support. Deodorization and ethylene decomposition rate may be improved by increasing the contact area with the gas such as. However, since the gas permeation rate of the moisture permeable sheet 50 is slow, a granular structure 65 as shown in FIGS. 3 and 4 can be preferably used.

In the refrigerator 1 of the first embodiment of the present invention described above, a part of the sealed container 30 is provided with a moisture permeable sheet 50 having a waterproof function, a moisture permeable function, and a wind (cold air) impermeable function. Arranged in the vicinity of the moisture permeable sheet 50, an air purifying means 60 capable of decomposing odorous substances and gases such as ethylene is provided. As a result, the air purifier 60 can deodorize malodorous substances and decompose gases such as ethylene in the first closed container 30, thereby improving the freshness of the stored vegetables.

<Second embodiment>
Next, a second embodiment of the refrigerator of the present invention will be described with reference to FIG.

FIG. 8 schematically shows a structural example around the vegetable compartment 3 of the second embodiment. Elements in the second embodiment shown in FIG. 8 that are the same as elements in the first embodiment shown in FIG.

A first sealed container 30 and a second sealed container 140 are accommodated in the vegetable compartment 3 shown in FIG. The first closed container 30 and the second closed container 140 are preferably transparent or translucent plastic containers, and the storage capacity of the first closed container 30 is larger than that of the second closed container 140 . The first closed container 30 is the lower container, and the second closed container 140 is the upper container arranged above the first closed container 30 .

The first airtight container 30 is a box-shaped container having four sides 31 and a bottom surface 32 , and has an upper opening 33 . The second airtight container 140 is a box-shaped container having four side portions 141 and a bottom portion 142 , and has an upper opening portion 143 . The upper opening portion 33 of the first closed container 30 is closed by the bottom portion 142 of the second closed container 140 so as to be openable and closable. The upper opening portion 143 is sealed with a lid member (not shown).

A moisture-permeable sheet 50 is arranged on the outer surface of the front side portion 31 of the first closed container 30 , and an air cleaning means 60 is arranged on the inner surface of the front side portion 31 of the first closed container 30 . The moisture permeable sheet 50 and the air purifier 60 are provided at corresponding positions with the front side portion 31 of the first sealed container 30 interposed therebetween.

Cool air circulation fan 26 for refrigerating shown in FIG. 1 operates, and cool air flows into vegetable compartment 3 from the refrigerator compartment/vegetable compartment cooler through fan duct 25 of the cooler compartment. This cool air does not flow into the first sealed container 30 . Since the moisture-permeable sheet 50 is arranged on the outer surface of the sealed first closed container 30 in the vegetable compartment 3, the vegetables and food in the vegetable compartment 30 are not dried.

However, if the concentration of the odorous substance and the concentration of the gas such as ethylene in the first closed container 30 increases, the first closed container 30 is filled with the odorous substance and the gas such as ethylene. Food may wither, and odorous substances and gases such as ethylene may flow out into the vegetable compartment 3 and the refrigerator 1 as a whole.

Therefore, the air purifying means 60 arranged in the first closed container 30 comes into contact with the odorous substances and gas such as ethylene in the first closed container 30 , and the air purifying means 60 is removed from the inside of the first closed container 30 . odor substances and gases such as ethylene can be purified more efficiently to deodorize the interior of the first sealed container 30 and decompose ethylene.

<Third Embodiment>
Next, a refrigerator according to a third embodiment of the present invention will be described with reference to FIG.

FIG. 9 schematically shows a structural example around the vegetable compartment 3 of the third embodiment. Elements in the third embodiment shown in FIG. 9 that are the same as elements in the first embodiment shown in FIG.

A first airtight container 30 housed in the vegetable compartment 3 shown in FIG. The second airtight container 140 is a box-shaped container having four side portions 141 and a bottom portion 142 , and has an upper opening portion 143 . The upper opening portion 33 of the first closed container 30 is closed by the bottom portion 142 of the second closed container 140 so as to be openable and closable. The upper opening portion 143 is sealed with a lid member (not shown).

A moisture-permeable sheet 50 is arranged on the inner surface of the front side portion 31 of the first closed container 30 , and an air purification means 60 is arranged on the inner surface of the bottom portion 32 of the first closed container 30 . The air purifier 60 arranged on the bottom surface portion 32 has a size that is arranged substantially over the entire inner surface of the bottom surface portion 32 . The moisture permeable sheet 50 and the air purifying means 60 are provided in the vicinity of each other in the first closed container 30 .

Cool air circulation fan 26 for refrigeration is activated, and cool air flows into vegetable compartment 3 from the refrigerator compartment/vegetable compartment cooler through air duct 25 of the cooler compartment. This cool air does not directly flow into the first sealed container 30 . Since the moisture-permeable sheet 50 is arranged on the outer surface of the sealed first sealed container 30 in the vegetable compartment 3, the vegetables and food in the vegetable compartment 30 do not dry out.

However, if the concentration of the odorous substance and the concentration of the gas such as ethylene in the first closed container 30 increases, the first closed container 30 is filled with the odorous substance and the gas such as ethylene. Food may wither, and odorous substances and gases such as ethylene may flow out from the interior of the vegetable compartment 3 to the entire refrigerator 1 .

Therefore, the large-sized air purification means 60 arranged on the inner surface side of the bottom portion 32 of the first closed container 30 comes into contact with the odorous substances and gases such as ethylene in the first closed container 30, and the air purification means 60 can more efficiently purify the malodorous substances and gases such as ethylene in the first closed container 30 to deodorize and decompose ethylene.

<Fourth Embodiment>
Next, with reference to FIG. 10, a refrigerator according to a fourth embodiment of the present invention will be described.

FIG. 10 schematically shows a structural example around the vegetable compartment 3 of the fourth embodiment. Elements in the fourth embodiment shown in FIG. 10 that are the same as elements in the first embodiment shown in FIG.

A first airtight container 30 and a second airtight container 140 are accommodated in the vegetable compartment 3 shown in FIG. The first sealed container 30 and the second sealed container 140 are preferably transparent or translucent plastic containers.

Moisture-permeable sheets 50 and air purification means 60 are arranged on the inner surface of the front side portion 31 and the inner surface of the rear side portion 31 of the first sealed container 30 . Another relatively large air purification means 60 is arranged on the inner surface of the bottom surface portion 32 of the first closed container 30, and the lower surface of the bottom surface portion 142 of the second closed container 140 (on the ceiling surface of the first closed container 30). corresponding), another relatively large air purification means 60 is arranged. Furthermore, moisture permeable sheets 50 are preferably arranged on the outer surface of the front side portion 31 and the outer surface of the rear side portion 31 of the first sealed container 30 .

A plurality of moisture-permeable sheets 50 and a plurality of air purifiers 60 are provided at adjacent positions inside and outside the first sealed container 30 . By providing a plurality of air purifying means 60 in the first sealed container 30, the air purifying means can contribute to air purification in the first sealed container 30 compared to providing one air purifying means 60. The total volume of 60 can be increased.

Cool air circulation fan 26 for refrigeration is activated, and cool air flows into vegetable compartment 3 from the refrigerator compartment/vegetable compartment cooler through air duct 25 of the cooler compartment. This cool air does not flow into the first sealed container 30 . Since the moisture-permeable sheet 50 is arranged on the outer surface of the sealed first closed container 30 in the vegetable compartment 3, the interior of the vegetable compartment 30 does not dry out.

However, if the concentration of odorous substances and the concentration of gases such as ethylene in the first closed container 30 increases, the odorous substances and gases such as ethylene may cause the vegetables and food in the first closed container 30 to wither. Gases such as ethylene may flow into the vegetable compartment 3 .

Therefore, the plurality of large-sized air purification means 60 arranged in the first closed container 30 come into contact with the odorous substance and gas such as ethylene in the first closed container 30, and the air purification means 60 Odor substances and gas such as ethylene in the sealed container 30 can be purified more efficiently to deodorize and decompose ethylene. Therefore, if the concentration of the odorous substance and the gas such as ethylene in the first closed container 30 increases, the plurality of large air purifying means 60 removes the odorous substance and the gas such as ethylene generated in the first closed container 30. can be decomposed more efficiently.

Note that the moisture permeable sheet 50 can be arranged at any position inside the first closed container 30 or outside the first closed container 30 . The air purifier 60 can be arranged at any position near the moisture permeable sheet 50 inside the first sealed container 30 . The number of arranged moisture-permeable sheets 50 and the number of air purifiers 60 are not particularly limited.

As described above, the refrigerator 1 of the embodiment of the present invention has a main body 1A having a vegetable compartment 3 as a storage compartment, and a closed container 30 arranged in the storage compartment (vegetable compartment) 3. A moisture-permeable sheet 50 is arranged in a part of 30 , and an air cleaning means 60 is provided in the vicinity of the moisture-permeable sheet 50 . As a result, the air purifier 60 can deodorize odorous substances in the air leaking from the moisture permeable sheet 50 and decompose gases such as ethylene, thereby improving the freshness of stored vegetables.

The air purification means 60 is provided inside the first sealed container 30 . As a result, since the air purifying means 60 is provided in the first sealed container 30 where odorous substances and ethylene tend to be highly concentrated, the air purifying means 60 can deodorize the odorous substances leaking from the moisture-permeable sheet 50 . Gases such as ethylene can be efficiently decomposed.

The air purification means 60 is a catalyst capable of decomposing odorous substances and ethylene, and more preferably a thermal catalyst 100 can be used. As the catalyst of the air purification means 60, a thermal catalyst is preferably used, so that the refrigerator having the air purification means 60 and the air purification means 60 can be used rather than a photocatalyst requiring a light source or a radical requiring a high voltage for generation. 1 can have a simple configuration.

The catalyst 100 of the air purifying means 60 is supported on granular structures 65 . As a result, the catalyst can be easily arranged in the vegetable compartment 3 without being blown away by the cold air while the catalyst remains highly reactive to odorous substances and ethylene.

The catalyst 100 of the air purifying means 60 is held by a case 70 having holes 71A and 72A smaller than the granular structure 65 . As a result, the case 70 can ensure air permeability for the catalyst without causing the granular structure 65 and the catalyst 100 to drop out of the case 70 .

Air purifier 60 is provided on at least one of the wall surface (side surface portion 31 ), bottom surface (bottom surface portion 32 ), and ceiling surface of the first closed container 30 . As a result, a large area (volume) of the air purification means 60 can be secured in the first sealed container 30, so that the efficiency of air purification can be improved.

A plurality of moisture permeable sheets 50 are arranged in the first sealed container 30 , and the air purifying means 60 are provided in the vicinity of the plurality of moisture permeable sheets 50 respectively. As a result, the plurality of air purifying means 60 can efficiently deodorize the odorant and decompose the ethylene gas by placing the first closed container 30 at a plurality of positions. It is possible to prevent the liquid from flowing into the vegetable compartment 3 from one side of the interior 30. - 特許庁

Although the embodiments of the present invention have been described above, the embodiments are presented as examples and are not intended to limit the scope of the invention. The novel embodiments can be implemented in various other aspects, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

Moreover, the structure of the refrigerator 1 shown in FIG. 1 is an example, and arbitrary structures can be adopted. For example, the door of the refrigerating compartment 2 of the refrigerator 1 may be a one-sided door.

Arranging a plurality of air cleaning means 60 in the first sealed container 30 can also be applied to the second embodiment shown in FIG. 8 and the third embodiment shown in FIG. In addition, in the first embodiment shown in FIG. 2, two moisture permeable sheets 50 and two air purifying means 60 are arranged in the first sealed container 30, but the present invention is not limited to this and three or more moisture permeable sheets 50 and three air cleaning means 60 may be arranged in the first sealed container 30 .

Moreover, each embodiment may be configured by combining them arbitrarily.

1 refrigerator 1A main body 3 vegetable compartment (example of storage compartment)
30 First closed container 40 Second closed container 50 Moisture permeable sheet 60 Air purifying means 65 Granular structure (an example of a support for supporting a catalyst)
70 Case 100 Powdery thermal catalyst (example of catalyst)

Claims (3)

a body having a storage chamber;
Having a container arranged in the storage chamber and having an upper opening closed so as to be openable and closable ,
Air purification means are arranged on the inner surface of the front side portion and the inner surface of the rear side portion of the container , respectively, and the outer surface of the front side portion and the outer surface of the rear side portion of the container are provided with air purification means. Moisture-permeable sheets are arranged respectively, and the air purifying means arranged on the inner surface of the rear side portion of the container and the moisture-permeable sheet arranged on the outer surface of the rear side portion of the container serve as air blowers. A refrigerator placed in front of the return port of the duct. 2. The refrigerator according to claim 1 , wherein said air purification means is a thermal catalyst. 3. The refrigerator according to claim 1, wherein a cooler and a fan are arranged inside said air duct arranged behind said storage compartment.

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