JP2020128873A - refrigerator - Google Patents

Abstract

To provide a refrigerator that can deodorize odor materials and decompose gas such as ethylene in a closed container in a storage chamber such as a vegetable chamber, and can improve a degree of freshness of stored vegetables, etc.SOLUTION: A refrigerator 1 comprises a body 1A including a vegetable chamber 3 as a storage chamber, and a closed container 30 arranged in the vegetable chamber 3. A moisture permeable sheet 50 is arranged in a portion of the closed container 30, and air cleaning means 60 provided near the moisture permeable sheet 50.SELECTED DRAWING: Figure 1

Description

Embodiments of the present invention relate to a refrigerator.

Conventionally, in order to prevent deterioration by cooling and storing vegetables and foods in a good condition in a vegetable compartment, which is an example of a refrigerator storage room, the container inside the vegetable compartment is made a high humidity as a closed container, and the inside of the closed container is external It is said that it is effective not to put cold air into the vegetables directly so that the cold air is not applied to the vegetables. However, if cold air is not put in the closed container, dew condensation will occur due to the water released from the vegetables.

Therefore, in the refrigerator, as disclosed in Patent Document 1, a partition plate is arranged to maintain the humidity at a predetermined value, and the partition plate is provided with a moisture permeable membrane unit having a moisture permeable membrane. It is arranged.

Japanese Patent Laid-Open No. 2015-124964

However, in the refrigerator disclosed in Patent Document 1, the odorous substances generated from vegetables and foods and the gas of ethylene, which is a plant aging hormone, fills the closed container, and the deodorization in the closed container cannot be performed. Alternatively, the ethylene gas reduces the freshness of the vegetables in the closed container. In addition, odorous substances and ethylene gas may pass through the moisture permeable membrane of the partition plate and diffuse from the closed container into the vegetable compartment and throughout the refrigerator.

The present invention has been made in view of the above, and an object thereof is to perform deodorization of odorous substances and decomposition of gas such as ethylene in a closed container arranged in a storage room such as a vegetable room, and to be stored. It is to provide a refrigerator that can improve the freshness of vegetables and the like.

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

It is a longitudinal section of a refrigerator concerning a 1st embodiment of the present invention. It is a figure which shows typically the structural example of the vegetable room vicinity shown in FIG. It is an exploded perspective view showing an example of a desirable structure of air purifying means. It is a schematic diagram which shows the example of the powdery (granular) thermal catalyst which is carry|supported by the granular structure of an air purification means. It is a schematic diagram which shows a nonwoven fabric as a support body which supports a catalyst. It is a schematic diagram which shows a net|network as a support body which supports a catalyst. It is a schematic diagram which shows the three-dimensional multilayer net|network which overlapped and formed the net|mesh in multiple layers. It is a figure which shows 2nd Embodiment of this invention. It is a figure which shows 3rd Embodiment of this invention. It is a figure which shows 4th Embodiment of this invention.

Hereinafter, modes for carrying out the present invention (hereinafter, referred to as embodiments) will be described with reference to the drawings.

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

The refrigerator 1 shown in FIG. 1 has a main body 1A. The main body 1A of this refrigerator 1 has an outer box made of an outer side plate and an inner box made of an inner side plate, and a heat insulating cabinet in which a heat insulating material is arranged between the outer box and the inner box. It is configured. A plurality of storage chambers are formed inside the main body 1A.

As shown in FIG. 1 and FIG. 2, the plurality of storage compartments are provided with a refrigerating compartment 2 and a vegetable compartment 3 in order from the top as a refrigerating compartment. An ice making chamber 4 and an upper freezing chamber 5 as freezing compartments are provided side by side under the vegetable compartment 3, and a lower freezing compartment 6 as a freezing compartment is provided at the lowermost portion.

As shown in FIG. 1, left and right doors 7 and 8 for opening and closing the front opening of the refrigerating compartment 2 are provided on the front surface of the refrigerating compartment 2. The left and right doors 7 and 8 are double doors. On each front surface of the vegetable compartment 3, the ice making compartment 4, the upper freezing compartment 5, and the lower freezing compartment 6, drawer-type doors 9, 10, 11, 12 for opening and closing each front opening are provided.

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

Further, at the back position of the main body 1A, at the rear side of the ice making room (storage room) 4, the upper freezing room (storage room) 5, and the lower freezing room 6, a freezer cooling device 27, a blower duct 28, and a freezer. A cold air circulation fan 29 is arranged.

The refrigerator/vegetable compartment cooler 24 and the freezing cooler 27 are cooled by the refrigerant supplied from the compressor 23. The refrigerating compartment 2 and the vegetable compartment 3 are cooled to a predetermined set temperature by a refrigerating cold air circulation fan 26, a refrigerating compartment/vegetable compartment cooler 24, and a blower duct 25, respectively, and are held there. The ice making chamber 4, the upper freezing chamber 5, and the lower freezing chamber 6 are cooled to a predetermined set temperature by the freezing cold air circulation fan 29, the freezing chamber cooler 27, and the blower duct 28, respectively, and held.

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

As shown in FIG. 1, in the vegetable compartment 3, a first closed container 30 and a second closed container 40 are housed in a vertically stacked state. 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 the storage capacity of the second closed container 40. The first closed container 30 is a lower container, and the second closed container 40 is an upper container arranged above the first closed container 30.

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

The upper opening portion 33 of the first closed container 30 is openably and closably closed by the bottom surface portion 42 of the second closed container 40. However, the rear side of the upper opening portion 33 of the first closed container 30 is opened as a rear side area opening portion 34. The rear region opening portion 34 is formed between the rear side surface portion 31, the left and right side surface portions 31, and the bottom surface portion 42 of the second closed container 40. The upper opening portion 43 of the second closed container 40 is openably and closably closed by a lid member 44.

As described above, the upper opening portion 33 of the first closed container 30 is almost closed by the bottom surface portion 42 of the second closed container 40, and the upper opening portion 43 of the second closed container 40 is closed by the lid member 44. Has been done.

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 FIG. 1 and FIG. 2, the moisture permeable sheet 50 and the air purifying unit 60 are arranged in the vertical direction on the inner surface of the side surface portion 31 on the front side of the first closed container 30. The front side surface portion 31 is preferably provided with an opening 77, and the moisture permeable sheet 50 and the air purifying means 60 are arranged corresponding to the opening 77. That is, the moisture permeable sheet 50 and the air purifying means 60 are provided inside the side surface portion 31 on the front side close to the drawer type door 9 side.

Similarly, another moisture permeable sheet 50 and an air purifying unit 60 are arranged in the rear region opening portion 34 of the first closed container 30 in the horizontal direction so as to close the rear region opening portion 34. Has been done. As a result, two sets of the moisture permeable sheet 50 and the air purifying unit 60 are provided in the first closed 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 ( It has the function of not passing cold air. This polyester long-fiber nonwoven fabric is a base material for disposing a polyethylene porous film.

The moisture permeable sheet 50 has a plurality of holes, and these holes have a plurality of holes having a diameter of 0.5 μm to 3 μm, for example, and allow water vapor particles of 0.0004 μm or less to pass through. However, water molecules larger than 0.5 μm to 3 μm do not pass through. For this reason, the moisture-permeable sheet 50 has both a moisture-permeable function and a waterproof function which are contradictory to each other.

The cold air circulation fan 26 for refrigeration shown in FIG. 1 operates to allow cold air to flow into the vegetable compartment 3 from the refrigerator/vegetable compartment cooler 24 through the air duct 25. At this time, since the moisture permeable sheet 50 is arranged at the rear side area opening portion 34 of the sealed first closed container 30 in the vegetable compartment 3 shown in FIG. Since the inflow is blocked, the cold air that has flowed into the vegetable compartment 3 does not flow into the first closed container 30. Further, since the moisture permeable sheet 50 is arranged corresponding to the opening 77 on the inner surface of the side surface portion 31 on the front side of the first closed container 30, the moisture permeable sheet 50 blocks the inflow of cold air. The cold air flowing into the vegetable compartment 3 does not flow into the first closed container 30. As a result, the vegetables are not dried by the cold air, and the vegetables do not wither.

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

As described above, the plurality of moisture permeable sheets 50 are located inside the first closed container 30 at the positions of 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. It is located in. Therefore, the cold air does not flow into the first closed container 30 through the rear region opening portion 34 of the first closed container 30 because the cold air is prevented from flowing in due to the presence of the plurality of moisture permeable sheets 50.

However, odorous substances smaller than a 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 a gas such as ethylene, which is a plant senescence hormone, are used in the rear region opening portion. It gently passes through the holes of the moisture permeable sheet 50 of 34. For this reason, if the odorous substance concentration or the gas concentration of ethylene or the like in the first closed container 30 increases, the odorous substance or the gas of ethylene or the like will cause the moisture permeable sheet 50 of the front side surface portion 31 and the rear side region opening portion 34. There is a risk that it may pass through the moisture permeable sheet 50, into the vegetable compartment 3 accommodating the first closed container 30, and flow out into the entire refrigerator 1.

Therefore, by providing the air purifying means 60 in the vicinity of each moisture permeable sheet 50, each air purifying means 60 can easily come into contact with the odorous substance or the gas such as ethylene in the first closed container 30. As a result, each air purification unit 60 can more efficiently purify the odorous substance and the gas such as ethylene in the first closed container 30 to perform deodorization and ethylene decomposition.

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, and is preferably a thermal catalyst. The thermal catalyst is a noble metal or metal oxide capable of decomposing an odor 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 from which odorous substances and gases such as ethylene flow out. May be. It is more preferable that the position where the air purifying means 60 is installed is installed inside the first closed container 30 where foods and vegetables are stored in the first closed container 30 and odorous substances and gases such as ethylene tend to have high concentrations. ..

As a result, when the concentration of the odorous substance or the gas concentration of ethylene or the like in the first closed container 30 is increased, the air purification means 60 decomposes the odorous substance or the gas of ethylene or the like, so that the odorous substance or the gas of ethylene or the like is generated. It is possible to prevent the moisture from passing through the moisture permeable sheet 50 from the inside of the first closed container 30 into the vegetable compartment 3 accommodating the first closed container 30 and into the entire refrigerator 1.

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 applied. 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 with light, but the light emitting element is not particularly limited.

Further, as the thermal catalyst of the air purifying means 60 described above, a thermal catalyst composed of a noble metal such as Pt, Pd, Au, etc., or a metal oxide such as manganese dioxide, copper oxide, etc. is used. Differently, it is not necessary to prepare a light source or electricity such as a high voltage to cause a catalytic action. Therefore, the structure of the refrigerator 1 can be simplified by using the thermal catalyst.

FIG. 3 is an exploded perspective view showing a preferred structural example of the air purifying means 60. FIG. 4 shows an example of a powdery (granular) thermal catalyst 100 supported on a granular structure (catalyst carrier) 65 of the air purifying means 60.

The air purifier 60 shown in FIG. 3 has a granular structure 65 and a case 70. As the material of the granular structure 65 shown in FIGS. 3 and 4, for example, ceramics or the like can be adopted, and the granular structure 65 carries the thermal catalyst 100. The size of the thermal catalyst 100 is considerably smaller than the size of the granular structure 65.

The thermal catalyst 100 is in powder form so as to facilitate contact with a reaction target substance such as an odor substance or a gas such as ethylene. If the thermal catalyst 100 remains in powder form, it will be blown off by cold air. Therefore, since the thermal catalyst 100 is supported on the granular structure 65, the thermal catalyst 100 is not blown off even if cold air blows, so that the first closed container 30 of the vegetable compartment 3 into which the cold air is introduced. Catalysis can be maintained inside and outside.

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

The lid portion 72 has a plurality of elongated holes 72A for ventilation over substantially the entire surface thereof, and the main body portion 71 has a plurality of elongated holes 71A for ventilation over the substantially entire surface thereof. Further, as shown in FIG. 3, the lid portion 72 has a plurality of protrusions 72B. These projections 72B can detachably attach the case 70 to, for example, the inner surface or the outer surface of the first closed container 30 shown in FIG.

The minimum size of the ventilation holes 71A and 72A shown in FIG. 3 is set smaller than the size of the granular structure 65 described above. Thereby, the granular structure 65 including the thermal catalyst 100 is prevented from falling out of the case 70, and the granular structure 65 is securely held inside the case 70. Moreover, since the case 70 has a plurality of elongated holes 72A, 71A for ventilation, it retains air permeability, and gas such as odor substance or ethylene is carried on the granular structure 65. The thermal catalyst 100 can be surely contacted.

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

By the way, the carrier carrying the catalyst such as the thermal catalyst is not limited to the case 70 made of plastic, and the carrier carrying the catalyst is, for example, a woven fabric or a non-woven fabric bag as illustrated in FIGS. 5 to 7. You may use what was formed in the shape.

FIG. 5 shows a non-woven fabric 110 as a carrier for supporting a catalyst. This non-woven fabric 110 carries the powdery (granular) thermal catalyst 100. The non-woven fabric 110 is formed as a three-dimensional object that secures a volume such as a bag. Thereby, the nonwoven fabric 110 can carry many thermal catalysts 100.

FIG. 6 shows a net 120 as a carrier for supporting the catalyst. This net 120 carries the powdery (granular) thermal catalyst 100. More preferably, this net 120 can be formed into a three-dimensional multilayer net 130 by stacking the nets 120 in multiple layers, as shown in FIG. 7. As a result, the multilayer net 130 can carry a larger number of thermal catalysts 100.

In addition, the shape of the structure (supporting body) for supporting the catalyst is not limited to a spherical shape, and may be a plate shape such as a louver or a tubular shape. The carrier (structure) for supporting the catalyst has a honeycomb shape, and the powdery thermal catalyst 100 is supported on the honeycomb-shaped carrier, whereby the thermal catalyst 100 and the odorous substance or ethylene It is also possible to increase the contact area with a gas such as to improve the deodorization rate and the ethylene decomposition rate. However, since the gas passage rate of the moisture permeable sheet 50 is slow, it is possible to preferably use the granular structure 65 as shown in FIGS. 3 and 4.

In the refrigerator 1 according to the first embodiment of the present invention described above, a moisture permeable sheet 50 having a waterproof function, a moisture permeable function, and a wind (cold air) impermeable function is provided in a part of the closed container 30. An air purification unit 60 capable of decomposing odorous substances and gases such as ethylene is provided near the moisture permeable sheet 50. As a result, the air purification unit 60 can deodorize odorous substances and decompose gas such as ethylene in the first closed container 30, and can improve the freshness of the stored vegetables.

<Second Embodiment>
Next, with reference to FIG. 8, a second embodiment of the refrigerator of the present invention will be described.

FIG. 8 schematically shows a structural example near the vegetable compartment 3 of the second embodiment. When the elements in the second embodiment shown in FIG. 8 are similar to the elements in the first embodiment shown in FIG. 2, the same reference numerals are given and the description thereof will be omitted.

A first closed container 30 and a second closed container 140 are housed in the vegetable compartment 3 shown in FIG. 8. 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 the storage capacity of the second closed container 140. The first closed container 30 is a lower container, and the second closed container 140 is an upper container arranged above the first closed container 30.

The first closed container 30 is a box-shaped container having four side surfaces 31 and a bottom surface 32, and has an upper opening portion 33. The second closed container 140 is a box-shaped container having four side surfaces 141 and a bottom surface 142, and has an upper opening 143. The upper opening portion 33 of the first closed container 30 is openably and closably closed by the bottom surface portion 142 of the second closed container 140. The upper opening portion 143 is sealed by a lid member (not shown).

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

The cold air circulation fan 26 for refrigeration shown in FIG. 1 operates to allow cool air to flow into the vegetable compartment 3 from the refrigerator/vegetable compartment cooler through the air duct 25 of the cooler compartment. This cold air does not flow into the first closed 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 or the gas concentration of ethylene or the like in the first closed container 30 increases, the odorous substance or the gas of ethylene or the like fills the first closed container 30 and the vegetables in the first closed container 30 or The food may be withered, and odorous substances and gases such as ethylene may flow out to the entire vegetable compartment 3 and refrigerator 1.

Therefore, the air purifying means 60 arranged in the first closed container 30 comes into contact with the odorous substance and the gas such as ethylene in the first closed container 30 so that the air purifying means 60 is in the first closed container 30. The odorous substance and the gas such as ethylene can be more efficiently purified to deodorize and decompose ethylene in the first closed container 30.

<Third Embodiment>
Next, with reference to FIG. 9, a third embodiment of the refrigerator of the present invention will be described.

FIG. 9 schematically shows a structural example near the vegetable compartment 3 of the third embodiment. When the elements in the third embodiment shown in FIG. 9 are similar to the elements in the first embodiment shown in FIG. 2, the same reference numerals are given and the description thereof will be omitted.

The first closed container 30 housed in the vegetable compartment 3 shown in FIG. 9 is a box-shaped container having four side surfaces 31 and a bottom surface 32, and has an upper opening portion 33. The second closed container 140 is a box-shaped container having four side surfaces 141 and a bottom surface 142, and has an upper opening 143. The upper opening portion 33 of the first closed container 30 is openably and closedly closed by the bottom surface portion 142 of the second closed container 140. The upper opening portion 143 is sealed by a lid member (not shown).

The moisture permeable sheet 50 is arranged on the inner surface of the side surface part 31 on the front side of the first closed container 30, and the air purifying means 60 is arranged on the inner surface of the bottom face part 32 of the first closed container 30. The air purifying means 60 disposed on the bottom surface portion 32 has a size that is disposed over substantially 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 the inside of the first closed container 30.

The cold air circulation fan 26 for cold storage operates, and cold air flows into the vegetable compartment 3 from the refrigerator for the cold compartment/vegetable compartment through the air duct 25 of the cooler compartment. This cold air does not directly flow into the first closed 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 or the gas concentration of ethylene or the like in the first closed container 30 increases, the odorous substance or the gas of ethylene or the like fills the first closed container 30 and the vegetables in the first closed container 30 or The food may be withered, and gas such as odorous substances and ethylene may flow out from the vegetable compartment 3 to the entire refrigerator 1.

Therefore, the large-sized air purifying means 60 arranged on the inner surface side of the bottom surface portion 32 of the first closed container 30 comes into contact with the odorous substance or the gas such as ethylene in the first closed container 30 to make the air purification means 60. Can more efficiently purify odorous substances and gases such as ethylene in the first closed container 30 to perform deodorization and ethylene decomposition.

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

FIG. 10 schematically shows a structural example near the vegetable compartment 3 of the fourth embodiment. When the elements in the fourth embodiment shown in FIG. 10 are the same as those in the first embodiment shown in FIG. 2, the same reference numerals are given and the description thereof will be omitted.

A first closed container 30 and a second closed container 140 are housed 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.

A moisture permeable sheet 50 and an air purifying unit 60 are arranged on the inner surface of the front side surface portion 31 and the inner surface of the rear side surface portion 31 of the first closed container 30. Another relatively large air purifying unit 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 to the above), another relatively large-sized air purifying means 60 is arranged. Further, preferably, the moisture permeable sheet 50 is arranged on the outer surface of the front side surface portion 31 and the outer surface of the rear side surface portion 31 of the first closed container 30.

The plurality of moisture permeable sheets 50 and the plurality of air purifying means 60 are provided at positions near the inside and outside of the first closed container 30. Since the plurality of air purification units 60 are provided in the first closed container 30, the air purification unit that can contribute to the air purification in the first closed container 30 as compared with the case where one air purification unit 60 is provided. The total volume of 60 can be increased.

The cold air circulation fan 26 for cold storage operates, and cold air flows into the vegetable compartment 3 from the refrigerator for the cold compartment/vegetable compartment through the air duct 25 of the cooler compartment. This cold air does not flow into the first closed 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 inside of the vegetable compartment 30 is not dried.

However, if the concentration of the odorous substance or the gas concentration of ethylene or the like in the first closed container 30 increases, the odorous substance or the gas of ethylene or the like may cause the vegetables or foods in the first closed container 30 to wither. Gas such as ethylene may flow into the vegetable compartment 3.

Therefore, the plurality of large-sized air purifying means 60 arranged in the first closed container 30 come into contact with the odorous substance or the gas such as ethylene in the first closed container 30 to cause the air purifying means 60 to It is possible to more efficiently purify the odorous substance and the gas such as ethylene in the closed container 30 to perform deodorization and ethylene decomposition. Therefore, if the odorous substance concentration in the first closed container 30 or the gas concentration such as ethylene in the first closed container 30 increases, the plurality of large-scale air purification means 60 removes the odorous substance or the gas such as ethylene in the first closed container 30. It can be decomposed more efficiently.

The moisture permeable sheet 50 can be arranged at any position inside the first closed container 30 and outside the first closed container 30. The air purification unit 60 can be arranged at an arbitrary position near the moisture permeable sheet 50 inside the first closed container 30. The number of the moisture permeable sheets 50 and the number of the air purifying means 60 arranged are not particularly limited.

As described above, the refrigerator 1 according to the embodiment of the present invention includes the main body 1A having the vegetable compartment 3 as the storage compartment and the 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 purifying unit 60 is provided in the vicinity of the moisture permeable sheet 50. As a result, the air purification unit 60 can deodorize the odorous substances in the air leaking from the moisture permeable sheet 50 and decompose the gas such as ethylene, and improve the freshness of the stored vegetables.

The air purifier 60 is provided in the first closed container 30. As a result, the air purifying means 60 is provided in the first closed container 30 where the odorous substance and ethylene are likely to have a high concentration. Therefore, the air purifying means 60 deodorizes the odorous substances in the air leaking from the moisture permeable sheet 50. Efficiently decomposes gas such as ethylene.

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

The catalyst 100 of the air purifying means 60 is supported on the granular structure 65. This makes it possible to easily arrange the catalyst in the vegetable compartment 3 without the catalyst being blown into the cold air while the reactivity of the catalyst with respect to the odorous substance and ethylene is increased.

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

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

A plurality of moisture permeable sheets 50 are arranged in the first closed container 30, and an air purifying unit 60 is provided near each of the plurality of moisture permeable sheets 50. Accordingly, the plurality of air purification units 60 can efficiently deodorize the odorous substance and decompose the ethylene gas at the plurality of positions of the first closed container 30, so that the deodorization of the odorous substance and the ethylene are prevented from occurring in the first closed container. It is possible to prevent the liquid from flowing into the vegetable compartment 3 from one side in 30.

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 embodiment can be implemented in various other modes, 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 the gist of the invention, and are also included in the invention described in the claims and the scope equivalent thereto.

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

Arranging a plurality of air purification units 60 in the first closed container 30 can be applied to the second embodiment shown in FIG. 8 and the third embodiment shown in FIG. 9. Further, in the first embodiment shown in FIG. 2, the two moisture permeable sheets 50 and the two air purifying means 60 are arranged in the first closed container 30, but not limited to this, three or more moisture permeable sheets. 50 and three air purification means 60 may be arranged in the first closed container 30.

Further, the respective embodiments may be configured by arbitrarily combining them.

1 Refrigerator 1A Main body 3 Vegetable room (example of storage room)
30 First Airtight Container 40 Second Airtight Container 50 Moisture Permeation Sheet 60 Air Purifying Unit 65 Granular Structure (Example of Carrier for Supporting Catalyst)
70 Case 100 Powdery thermal catalyst (example of catalyst)

Claims (3)

A main body having a storage chamber,
Having a closed container arranged in the storage chamber,
A refrigerator in which an air purifying unit is arranged on a front side surface of the closed container, and a moisture permeable sheet is arranged on a rear side surface of the closed container. The refrigerator according to claim 1, wherein the air purification unit is a thermal catalyst. The refrigerator according to claim 1, wherein at least a part of the cooler arranged on the rear side of the storage chamber overlaps with the moisture permeable sheet arranged on the rear side surface of the closed container in the front-rear direction. ..

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