KR20100056336A - Refrigerator - Google Patents

Abstract

PURPOSE: A refrigerator is provided to efficiently perform the deodorization and/or the sterilization in a pressure-reduced storage room without a blowing unit. CONSTITUTION: A refrigerator comprises a storage room(24), a cover(60), and a pressure-reducing unit(29). The cover opens and closes the opening of the storage room. If the opening is closed, the cover suppresses the movement of the gas between the inside and the outside of the storage room. The pressure-reducing unit reduces the inner pressure of the storage room inside to the pressure lower than the atmospheric pressure. A photocatalyst is installed at the inner side of the cover and/or the inner wall of the storage room, and the moisture emitted from the food stored in the storage room keeps the inside of the storage room at a high humidity, if the pressure of the storage room reduces. At least part of the storage room and/or the cover is composed of light-transmitting material.

Description

Refrigerator {REFRIGERATOR}

The present invention relates to a refrigerator.

Conventionally, there exists a refrigerator disclosed by patent document 1 as deodorizing and disinfecting air in a refrigerator. The refrigerator described in Patent Document 1 is provided with a deodorizing device provided with a light emitting diode (hereinafter referred to as "LED") for irradiating predetermined visible light to the photocatalytic reaction surface on the wall surface of the refrigerator.

[Patent Document 1] Japanese Patent Application Laid-open No. Hei 9-941

However, in the above prior art, the premise was to increase the contact efficiency between the photocatalytic reaction surface and the malodorous component and various bacteria by ventilating to deodorize and / or disinfect.

Specifically, the decomposition reaction occurs after the malodorous component or various bacteria are adsorbed by the photocatalyst. However, the radical reaction may become a heat generating source, and the adsorption of malodorous components and various bacteria to the photocatalytic reaction surface may be hindered. Therefore, in the prior art, ventilation means were necessary in order to prevent the degradation of the odor component and the removal of various germs effectively.

In this case, since the pressure is reduced to a pressure lower than the atmospheric pressure in the prior art, there is a problem that a sufficient deodorization sterilization effect cannot be exhibited in a decompression storage chamber in which movement of gas inside and outside is suppressed, that is, a storage chamber without a blowing means. .

An object of the present invention is to provide a refrigerator capable of efficiently deodorizing and / or disinfecting a gas inside and outside the gas, and deodorizing and / or disinfecting in a decompression storage chamber without a blowing means.

In order to achieve the above object, the refrigerator of the present invention includes a storage compartment having an opening, and a lid for suppressing the movement of gas inside and outside the storage compartment when opening and closing the opening of the storage compartment and closing the opening. In one refrigerator, a photocatalyst is installed on an inner wall of the storage compartment and / or an inner surface of the lid.

In addition, a storage chamber having an opening, a lid for suppressing movement of gases inside and outside the storage chamber when the opening and closing of the opening of the storage chamber is opened and closed, and the inside of the storage chamber is decompressed to a pressure lower than atmospheric pressure. A refrigerator provided with a decompression means, wherein a photocatalyst is installed on an inner wall of the storage compartment and / or an inner surface of the lid, and when the storage compartment is depressurized, moisture discharged from food stored in the storage compartment is applied to the interior of the storage compartment. It is characterized by maintaining in high humidity.

In addition, at least a portion of the storage compartment and / or the lid is made of a light-transmissive material, characterized in that the photocatalyst is installed in a portion made of the light-transmissive material.

In addition, the light source for irradiating light containing ultraviolet rays is installed on the outside of the storage chamber made of the light-transmitting material.

Further, the cover is provided between a decompression storage chamber which is decompressed to a pressure lower than atmospheric pressure, an opening formed in the front portion of the decompression storage chamber, a lid for opening and closing the opening, and the lid and the opening of the decompression storage chamber. A sealing member for suppressing movement of gases inside and outside the decompression storage chamber when the opening is closed, decompression means for depressurizing the inside of the decompression storage chamber to a pressure lower than atmospheric pressure, and a refrigerating chamber provided with the decompression storage chamber. A refrigerator, comprising: a first light source provided outside of the reduced pressure storage chamber and configured to pulse light including ultraviolet rays to the cover; and a light provided outside of the reduced pressure storage chamber to pulse ultraviolet light on an upper wall of the reduced pressure storage chamber. And a second light source to irradiate, wherein an upper wall and the cover of the decompression storage chamber transmit water through glass or light. And a photocatalyst is applied to the inner wall of the decompression storage chamber and the inner surface of the lid so that when the decompression storage chamber is depressurized, the humidity in the decompression storage chamber is increased to increase the humidity in the decompression storage chamber. It features.

In addition, the light source is characterized in that the pulse irradiation.

According to the refrigerator of the present invention, it is possible to provide a refrigerator capable of efficiently deodorizing and / or disinfecting the inside and the outside of gas and suppressing degassing in a decompression storage chamber without a blowing means.

EMBODIMENT OF THE INVENTION Hereinafter, the refrigerator of one Embodiment of this invention is demonstrated using drawing.

First, the overall configuration of the refrigerator will be described with reference to FIGS. 1 to 4. 1 is a central longitudinal sectional view of the refrigerator of the present embodiment. FIG. 2 is a cross-sectional perspective view of the lowest space portion of the refrigerator compartment of FIG. 1. FIG. 3 is an external perspective view of a state in which a lid of the decompression storage chamber is closed. 4 is a perspective view of an open state of the lid of the pressure reduction storage body.

The refrigerator comprises a refrigerator main body 1 having an opening in front and doors 6 to 10 provided to open and close the front opening of the refrigerator main body 1. The refrigerator main body 1 is comprised with the urethane foam heat insulating material 13 and the vacuum heat insulating material (not shown) between the outer case 11 made of steel plate, and the inner case 12 made of resin. In addition, a plurality of storage chambers are provided in the order of the refrigerating chamber 2, the upper freezing chamber 3b, the ice making chamber 3a (not shown), the lower freezing chamber 4, and the vegetable chamber 5 from above. In other words, the refrigerating chamber 2 and the vegetable chamber 5 are partitioned and arranged at the uppermost stage, respectively, and the upper freezer chamber 3a thermally partitioned between both of these storage chambers between the refrigerating chamber 2 and the vegetable chamber 5. And a lower freezer compartment 4 are arranged. The refrigerating chamber 2 and the vegetable chamber 5 are storage chambers of a refrigeration temperature range (0 degreeC or more, for example, a temperature range of about 2 degreeC-10 degreeC). The upper freezer compartment 3a and the lower freezer compartment 4 are storage chambers of a freezing temperature range (0 degrees C or less, for example, one temperature of about -20 degreeC to -18 degreeC). These storage chambers 2 to 5 are partitioned by partition walls 33, 34, 35.

The front surfaces of the refrigerator main body 1 are provided with doors 6 to 10 that can open and close the front openings of the storage chambers 2 to 5. The refrigerating compartment door 6 is a so-called French door type rotary door provided with two left doors and a right door. Specifically, the left door is rotatably installed by the left and right hinges 6a and 6a of the refrigerator main body 1, and the right door is rotatable by the left and right hinges (not shown) of the refrigerator main body 1. It is provided to open and close the front opening of the refrigerating chamber 2.

The ice making room door 7 (not shown) is a door which opens and closes the front opening of the ice making room 3a. The upper freezer compartment door 8 is a door that opens and closes the front opening of the upper freezer compartment 3b. The lower freezer compartment door 9 is a door that opens and closes the front opening of the lower freezer compartment 4. The vegetable chamber door 9 is a door which opens and closes the front opening of the vegetable chamber 5. Moreover, the ice-making chamber door 7, the upper freezer compartment door 8, the freezer compartment door 9, and the vegetable compartment door 10 are comprised by the draw-out door, and the container in a storage chamber is taken out with a drawer door.

Next, a refrigeration cycle is provided in the refrigerator main body 1. This refrigeration cycle is configured by connecting a compressor 14, a condenser (not shown), a capillary tube (not shown), a cooler 15, and then a compressor 14 in this order. The compressor 14 and the condenser are installed in the machine room 100 provided in the lower back of the refrigerator main body 1. The cooler 15 is installed in the cooler chamber 110 provided behind the ice-making chamber 3a, the upper freezer chamber 3b, and the lower freezer chamber 4, and is located above the cooler 15 in this cooler chamber 110. As shown in FIG. The blower fan 16 is installed in this.

The cold air cooled by the cooler 15 is sent to each of the storage chambers of the refrigerating chamber 2, the upper freezing chamber 3b, the ice making chamber 3a, the lower freezing chamber 4, and the vegetable chamber 5 by the blowing fan 16. . Specifically, the cold air sent by the blower fan 16 is sent to the storage compartment of the refrigerating temperature zone of the refrigerating compartment 2 and the vegetable compartment 5 via a damper device (not shown) which can be opened and closed, and the other part. Is sent to the storage chamber of the freezing chamber 3 (upper freezing chamber 3b and ice making chamber 3a) and the freezing temperature zone of the lower freezing chamber 4.

The cold air sent to the refrigerating compartment 2, the upper freezing compartment 3b, the ice making chamber 3a, the lower freezing compartment 4 and the vegetable compartment 5 by the blowing fan 16 cools each storage compartment, and then It returns to the cooler chamber 110 through a cold air return passage (not shown). Thus, the refrigerator of this embodiment has the circulation structure of cold air, and keeps each storage chamber 2-5 at an appropriate temperature.

In the refrigerating chamber 2, the several stage storage shelf 17-20 comprised with the transparent resin plate is provided in the up-down direction so that removal is possible. The lowermost storage shelf 20 is installed in contact with the back and both sides of the inner case 12, and is formed by partitioning the lowermost space 21 from the upper space between the partition wall 34 and the storage shelf 20. Doing. In addition, inside each refrigerating compartment door 6, a plurality of stage door pockets 25 to 27 are provided, and these door pockets 25 to 27 are inserted into the refrigerating compartment 2 when the refrigerating compartment door 6 is closed. It is installed to protrude. The rear panel 30 is provided on the rear surface of the refrigerating chamber 2 to form a passage through which the cold air supplied from the blowing fan 16 passes. The back panel 30 is made of a material having high thermal conductivity, and is formed of metal such as aluminum as an example. Thereby, the temperature change of the refrigerating chamber 2 can be suppressed, and the load by the temperature change applied to the stored food can be reduced. In addition, when there is little supply of cold air, such as during defrosting operation, it can suppress that the temperature in the refrigerating chamber 2 rises by the radiant heat from the back panel 30.

In the lowermost space 21, the ice-making water tank 22 for supplying ice-making water to the ice-making tray of the freezer compartment 3, the storage case 23 for storing foods, such as a dessert, and the room pressure are decompressed in order from left to right. A decompression storage chamber 24 is provided for maintaining freshness and preserving the freshness for a long time. The decompression storage chamber 24 has a width narrower than that of the refrigerating chamber 2, and is disposed adjacent to the side surface of the refrigerating chamber 2.

The ice making tank 22 and the storage case 23 are arranged behind the refrigerating compartment door 6 on the left side.

Thereby, the ice-making water tank 22 and the storage case 23 can be taken out only by opening the refrigerator compartment door 6 of the left side. In addition, the reduced pressure storage chamber 24 is arrange | positioned behind the refrigerator compartment door 6 of the right side. Thereby, the cover 60 of the decompression storage chamber 24 can be taken out only by opening the refrigerator compartment door 6 of the right side. Moreover, inside the pressure reduction storage chamber 24, the pressure reduction storage container 60a which loads food is provided. The decompression storage chamber container 60a is coupled with the lid 60, and is pulled forward with the withdrawal operation of the lid 60. That is, since the desired food can be taken out or the water of the ice-making tank 22 can be replenished or exchanged only by opening the left side refrigerator compartment door 6 or the right side refrigerator compartment door 6, the refrigerator compartment more than necessary ( The cold air of 2) can be prevented from leaking outside.

In addition, the ice-making tank 22 and the storage case 23 are located behind the lowermost door pocket 27 of the left side refrigerator compartment door 6, and the decompression storage chamber 24 has the right side refrigerator compartment door 6 It is located at the rear of the door pocket 27 at the lowermost end. Here, the cold air cooled by the cooler 15 and sent to the refrigerating chamber 2 is configured to indirectly cool the inside of the reduced pressure storage chamber 24 through the periphery of the reduced pressure storage chamber 24.

An ice-making water pump 28 is provided behind the ice-making tank 22. The negative pressure pump 29 which is an example of the pressure reduction device for decompressing the pressure reduction storage chamber 24 is arrange | positioned in the space of the back side of the storage case 23, and the back part side of the pressure reduction storage chamber 24. As shown in FIG. The negative pressure pump 29 is connected to the pump connection part provided in the side of the pressure reduction storage chamber 24 via a conduit.

The decompression storage chamber 24 includes a case-shaped decompression storage chamber main body 40 having a front opening 40f for food entry and exit, a cover 60 for opening and closing the front opening 40f of the decompression storage chamber main body 40, and food It is configured to include a pressure-reduced storage chamber container (60a) for accommodating and engaging the lid 60 in and out. By closing the front opening 40f of the pressure reduction storage main body 40 with the lid 60, the space surrounded by the pressure reduction storage main body 40 and the lid 60 is formed as a low pressure space where the pressure is reduced. The pressure reduction storage container 60a is provided on the back side of the lid 60 and can move back and forth with the movement of the lid 60. Moreover, when the lid | cover 60 is closed between the lid | cover 60 and the front opening 40f of the pressure_reduction | reduced_pressure storage chamber main body 40, the effect which suppresses the movement of gas inside and outside of the pressure-reduced storage chamber 24 is exhibited. In order to improve, the sealing member S is provided.

The decompression storage chamber 24 is a gas control chamber in which internal air is sucked by the negative pressure pump 29 and decompressed to an atmospheric pressure lower than atmospheric pressure, for example, 0.8 atm (80 kPa) or the like. In other words, the decompression storage chamber 24 creates a special air atmosphere for preventing oxidation of food and maintaining freshness of vegetables.

3, the rib 40s is provided in the pressure reduction storage chamber 24 as a processus | protrusion in the upper surface. Thereby, the structure which is supported between the decompression storage chamber 24 and the storage shelf 20 which is just above is formed in the state which formed the suitable clearance gap. The inlet (not shown) of the cold air of the refrigerating chamber 2 is formed in the rear part of the decompression storage chamber 24, and it sucks in the air around the decompression storage chamber 24, and cool air flows indirectly cooling the decompression storage chamber 24. do.

In addition, the decompression storage chamber 24 has a front opening, and the outer circumferential wall is formed by a substantially rectangular parallelepiped decompression storage main body 40 having a front and an inner side, and a cover 60 moving forward and backward to open and close the front opening. Formed. In other words, the pressure reduction storage body 40 is integrally formed in a case shape. Specifically, the resin is molded using ABS (resin containing acrylonitrile, butadiene, styrene), AS (resin containing acrylonitrile, styrene), and the like, and both side walls 40a and 40b and bottom wall 40c are formed. ), The front face having the rear face wall 40d and the top face wall 40e is opened.

That is, the cover 60 which opens and closes is provided in the pressure reduction storage chamber 24 in order to enter and exit a storage object. In addition, reinforcing ribs for increasing strength by increasing the cross-sectional coefficient are vertically provided on the outer surface of the reduced pressure storage chamber main body 40 in a linear or lattice shape. In addition, the shape of the reinforcing rib is not limited to these, What is necessary is just to increase the cross-sectional coefficient of the pressure reduction storage main body 40, and to aim at strength improvement.

In addition, when the upper wall 40e of the pressure reduction storage chamber 24 consists of tempered glass as an example, it can be set as planar shape, without providing the above-mentioned reinforcement rib etc. This improves the internal visibility.

60 s of support shafts are provided in the both sides of the pressure reduction storage main body 40. As shown in FIG. The opening / closing handle 70 is rotatably supported around the support shaft 60s. In addition, the cover 60 is provided with a differential pressure discharge valve V (see FIG. 4).

The user grips the opening / closing handle 70 to lock the opening / closing operation of the lid 60 and the closing of the lid 60, and simultaneously opens and closes the differential pressure discharge valve V.

In addition, when the decompression storage chamber 24 is decompressed by the negative pressure pump 29, the cover 60 is formed by the differential pressure between the atmospheric pressure outside the decompression storage chamber 24 and the decompressed pressure inside the decompression storage chamber 24. The load on) increases. Thereby, in order to open the lid 60 directly, the user needs a considerable force.

Therefore, by opening the differential pressure discharge valve V, the inner and outer spaces of the lid 60 are inserted to eliminate the pressure difference between the inner and outer spaces, thereby eliminating the load due to the differential pressure, so that the lid 60 can be easily opened. .

When food is loaded into the decompression storage chamber container 60a and the lid 60 is closed, movement of gas between the front opening of the decompression storage chamber 24 and the lid 60 is suppressed. When the refrigerating compartment door 6 is closed and the door switch (not shown) is turned on, the negative pressure pump 29 is driven to depressurize the decompression storage chamber 24 to a state lower than atmospheric pressure. As a result, the oxygen concentration in the reduced pressure storage chamber 24 decreases. That is, deterioration of the nutrient component in food can be prevented by the oxygen concentration of the pressure reduction storage chamber 24 being reduced.

Next, the specific structure of the pressure reduction storage chamber 24 is demonstrated. A photocatalyst is provided on the inner wall of the decompression storage chamber 24, that is, the inner wall surface which forms a decompression storage space for storing food and the like (not shown). Outside the decompression storage chamber 24, the light sources 80 and 81 which irradiate the light containing an ultraviolet-ray are arrange | positioned.

Here, the photocatalytic action will be described. The photocatalyst reacts by irradiating ultraviolet rays. Then, oxygen and water in the air are decomposed to generate highly reactive radicals. Hereinafter, the radical formation reaction formula of oxygen is shown in "chemical formula 1", and the radical formation reaction formula of water is shown in "chemical formula 2", respectively.

O ₂ → O ^-, O ^and, O ₂ ^-, O ₂ ^and

H ₂ O → O ^-, O ^and, O ₂ ^-, O ₂ ^and, OH ^and, OH ^-

Comparing "Formula 1" and "Formula 2", there are many kinds of radicals in the case of decomposing water. Then, the photocatalytic reaction generates a lot of radicals in a humid atmosphere. Therefore, in the photocatalyst, a moisture-rich atmosphere, that is, a high-humidity atmosphere, acts effectively for decomposition of odor components and removal of various germs.

By the way, when the lid 60 is closed and the pressure inside the decompression storage chamber 24 is decompressed, moisture slightly evaporates from the food stored in the decompression storage chamber 24. In that case, the internal atmosphere of the pressure reduction storage chamber 24 will be 100% in humidity.

Therefore, by processing the photocatalyst inside the decompression storage chamber 24, the decomposition of the odor and the removal of various germs in the decompression storage chamber 24 can be effectively performed by the photocatalytic action.

Next, the light sources 80 and 81 will be described with reference to FIG. 5. It is a cross-sectional schematic diagram of a light irradiation apparatus.

Reference numeral 101 denotes a mounting board of the LED. Reference numeral 102 denotes a light emitting diode (hereinafter referred to as "LED"). The LED 102 is installed on the mounting board 101. Numeral 103 is a cover covering the LED. The cover 103 is formed of a light transmissive material that transmits the light of the LED 102. Reference numeral 104 denotes a support member that supports the mounting substrate 101, the LED 102, and the cover 103. The supporting member 104 is provided in the refrigerating chamber 2 by a locking means 105 such as a screw. In addition, the LED 102 is provided at an angle to irradiate the processed photocatalyst surface inside the reduced pressure storage chamber 24.

The opening / closing handle 70 of the reduced pressure storage chamber main body 40 is made of a material that transmits light, for example, resin or glass. Titanium oxide or zinc oxide is calcined or coated on the inner surface of the open / close handle 70, that is, the surface on the side of the reduced pressure storage space for storing food. The light source 80 is provided to irradiate the opening and closing handle 70.

The lid 60 is made of a material that transmits light, for example, resin or glass. Titanium oxide or zinc oxide is added or applied to the inner surface of the lid 60, that is, the surface on the side of the reduced pressure storage space for storing food. The light source 81 is provided to irradiate the lid 60.

With this configuration, the reduced pressure storage chamber 24 is irradiated from the rear by the light source 80 from the front and from the front by the light source 81. Thereby, the visibility of the inside can be improved, without opening the lid | cover 60 of the pressure reduction storage chamber 24, ie, decompressing | removing pressure reduction.

Next, the test result performed about the irradiation conditions of the light sources 80 and 81 and the decomposition efficiency of a bad smell component is demonstrated using FIG. It is a figure which shows the relationship between the light irradiation time and the residual ratio of odor component gas (methyl mercaptan).

Experimental conditions measured the concentration of methyl mercaptan in the container over time by continuously irradiating the light source 81 to the lid 60 which processed the photocatalyst and the pulse irradiation using the reduced pressure storage chamber 24 over time. . That is, the deodorization effect was compared and examined from the decay rate of concentration in the case of continuous irradiation and pulse irradiation. Here, the pulse irradiation is a case where pulse irradiation is performed with an irradiation time (on time) of 0.5 milliseconds [ms] and a non-irradiation time (off time) of 0.5 ms.

In Fig. 6, the vertical axis represents the percentage of percent odor component gas remaining, and the horizontal axis represents the elapsed time [minute] from the start of irradiation.

As a result of the test (see FIG. 6), it was found that the residual ratio of methyl mercaptan was smaller in the case of pulse irradiation than in the case of continuous irradiation of the light source 81. Thereby, it turned out that the deodorizing effect in the pressure reduction storage chamber 24 can be improved by pulse irradiation.

This is for the following reason. That is, when continuously irradiating the light source 81, radical generation by a photocatalytic reaction occurs continuously. However, there is no means for circulating air in the reduced pressure storage chamber 24, and adsorption of methyl mercaptan on the surface of the photocatalyst is inhibited.

On the other hand, when irradiating with a pulse period, when no light is irradiated (non-irradiation time (off time)), methyl mercaptan is adsorb | sucked to a photocatalyst. And when irradiating light [irradiation time (on time)], the adsorbed methyl mercaptan decomposes | disassembles by a photocatalytic effect. In other words, the photocatalyst surface is refreshed in accordance with the pulse period, and this repetition is performed efficiently.

As described above, the deodorization and sterilization in the reduced pressure storage chamber 24 can be efficiently performed by providing a photocatalyst in the reduced pressure storage chamber 24 having no blowing means and performing pulse irradiation from the outside of the reduced pressure storage chamber 24.

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

FIG. 2 is a cross-sectional perspective view of the lowest space portion of the refrigerating compartment of FIG. 1. FIG.

3 is an external perspective view of a lid of the decompression storage chamber closed.

4 is a perspective view of the cover of the decompression storage body opened.

5 is a schematic cross-sectional view of a light irradiation apparatus.

6 is a diagram showing a relationship between light irradiation time and a residual ratio of malodorous components.

<Explanation of symbols for the main parts of the drawings>

24: decompression storage room

40: decompression storage body

60: cover

60a: decompression storage container

70: opening and closing handle

80, 81: light source

101: mounting board

102: LED

103: cover

104: support member

105: locking means

Claims (6)

A refrigerator having a storage chamber having an opening, and a lid for suppressing movement of gases inside and outside the storage chamber when the opening and closing of the opening of the storage chamber are closed and the opening is closed. And a photocatalyst is installed on an inner wall of the storage compartment and / or an inner surface of the cover. A storage chamber having an opening, a lid for suppressing movement of gases inside and outside the storage chamber when the opening and closing of the opening and closing of the storage chamber are closed, and a pressure reduction to depressurize the inside of the storage chamber to a pressure lower than atmospheric pressure. A refrigerator provided with means, A photocatalyst is installed on an inner wall of the storage compartment and / or an inner surface of the lid, and when the storage compartment is depressurized, moisture released from food stored in the storage compartment maintains the interior of the storage compartment at high humidity. . The refrigerator according to claim 2, wherein at least a portion of the storage compartment and / or the cover is made of a light transmissive material, and the photocatalyst is installed at a portion made of the light transmissive material. The refrigerator according to claim 3, wherein a light source for irradiating light including ultraviolet rays is provided outside the storage chamber to a portion made of the light transmissive material. A pressure reducing storage chamber which is depressurized to a pressure lower than atmospheric pressure, an opening formed in a front portion of the pressure reducing storage chamber, a lid for opening and closing the opening, and the lid and the opening of the pressure reduction storage chamber, wherein the lid is opened. In the refrigerator provided with a sealing member for suppressing the movement of gas inside and outside the pressure-reduction storage chamber, the pressure-reducing means for reducing the pressure inside the pressure-reduction storage chamber to a pressure lower than atmospheric pressure, and the refrigerating chamber in which the pressure-reduction storage chamber is installed. In A first light source provided outside the decompression storage chamber to pulse the light including ultraviolet rays in the cover, and a second light source installed outside the decompression storage chamber to pulse the light including ultraviolet rays in an upper wall of the decompression storage chamber. With a light source, The upper wall and the lid of the decompression storage chamber are made of glass or resin which transmits light, and a photocatalyst is applied to the inner wall of the decompression storage chamber and the inner surface of the cover, so that the decompression storage chamber is stored in the decompression storage chamber. A refrigerator, characterized in that to increase the humidity in the reduced pressure storage chamber with moisture released from a food. The refrigerator according to claim 4 or 5, wherein the light source emits pulses.

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