JPH11190584A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain a high humidity in a vegetable chamber, prevent condensation in the same chamber and increase moisture absorbing and discharging amount per unit weight of a moisture regulating material with respect to the change of humidity in a high humidity area, by a method wherein the moisture regulating member, having moisture absorbing and discharging characteristic, is constituted of the principal constituting member of porous material having fine holes whose diameters are within a specified range. SOLUTION: A sheet type moisture regulating member 20 is obtained by a method wherein a moisture regulating material 13, employing a porous adsorbing agent, such as powdered porous silica, diatomite, allophane, alumina silica or the like which is provided with the diameter of fine holes of 50-150 angstrom, is mixed into binding agent 14 consisting of the liquid emulsion of acrylic resin, polyester resin, silicone resin and the like to apply the mixture on a sheet type moisture permeating material 12 and, thereafter, the same moisture permeating material 12 is superposed thereon to press and thin the thickness of the same and cure the binding agent 14. According to this method, maintainance of a high humidity in the vegetable chamber as well as prevention of condensation in the vegetable chamber can be achieved while the absorbing and discharging amount of moisture per unit weight of the moisture regulating material 13 with respect to a humidity change in a high humidity area can be increased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator, and more particularly to a refrigerator for automatically controlling the humidity of a vegetable room.

[0002]

2. Description of the Related Art In a home refrigerator, fruits and vegetables such as vegetables are generally stored in a dedicated vegetable room. It is known that by storing vegetables and fruits in a high humidity atmosphere, the transpiration of water can be suppressed and freshness can be maintained. Although it is kept, there is a problem that dew condensation easily occurs in the vegetable room due to an overhumid state.

In order to solve this problem, a humidity control member provided with a humidity control material made of a polymer absorbent having a moisture absorbing / releasing action has conventionally been installed in a vegetable room, and when the vegetable room is in an over-humid state. Japanese Patent Application Laid-Open No. 60-1985 proposes that the humidity control material absorbs excess moisture to prevent dew condensation, and when the humidity in the vegetable room decreases, the humidity control material releases the stored water to increase the humidity. No. 3,686,262.

Further, a polymer absorber having a relatively high moisture absorbable amount (hereinafter referred to as “moisture absorbable amount”) as the humidity control material and an average pore diameter such that the moisture absorbable amount rapidly changes in a high humidity region. Japanese Patent Application Laid-Open No. 5-302781 discloses an example in which a porous silica gel of 155 angstrom (hereinafter referred to as “porous silica”) is used in combination.

According to the disclosed example, a polymer absorbent such as polymethyl methacrylate has a large hygroscopic amount,
In a high humidity region where the relative humidity is, for example, 80% or more, the amount of change in the amount of moisture absorption relative to the relative humidity is small, and a sufficient amount of moisture absorption and desorption cannot be obtained with respect to a change in humidity in the high humidity region. For this reason, the water stored in the polymer absorber is absorbed by porous silica arranged in close proximity to the polymer absorber by capillary action, and moisture exceeding the moisture absorption capacity of the porous silica is released from the porous silica. It is made to let.

In addition, a container enclosing a cyclodextrin clathrate compound, which is a volatile antibacterial and fungicide, is installed in a refrigerator to release the antibacterial and fungicide to release antibacterial air in the refrigerator, and to produce fruits and vegetables. Japanese Patent Laid-Open No. 3-16 proposes a proposal for maintaining freshness by suppressing rot and fungi caused by bacteria attached to the surface.
No. 4681.

[0007]

However, organic polymer particles having a hydrophilic or ionic group on the surface of a styrene sulfonic acid copolymer or the like described in JP-A-60-36862 are prepared. When used as a wet material, the amount of water absorbed per unit weight was so small that the water evaporating from the fruits and vegetables could not be sufficiently absorbed.

Further, in Japanese Patent Laid-Open Publication No. Hei 5-302781, the humidity control member is supported on a nonwoven fabric. In this method, the thickness of the humidity control member is about 4 mm, so that the space in the vegetable compartment is narrow. . On the other hand, although a proposal has been made to make the humidity control member a sheet, no specific means has been mentioned, and a sheet-like humidity control member has not been realized.

[0009] Further, the porous silica described as a humidity control material rapidly changes its hygroscopic capacity at room temperature in a high-humidity region. It was found that there was a case where dew was formed without sufficiently absorbing moisture in response to a rise in humidity. For this reason, a large amount of porous silica is required in order to absorb moisture sufficiently, and the space in the vegetable compartment has been narrowed.

In the above-mentioned JP-A-3-164681, when a container enclosing a cyclodextrin clathrate compound as a volatile antifungal agent is installed in a refrigerator, the antifungal agent is constantly released. Therefore, even if no fruits and vegetables are contained in the refrigerator, the antibacterial and antifungal agent is released and the antibacterial effect is not maintained.

According to the present invention, by optimizing the pore diameter of the porous material, the amount of moisture absorption and desorption can be twice or more than that of a conventional humidity change in a high humidity region. It has been made based on the finding that the phenomenon that the speed at which the humidity control member decreases can be suppressed by forming the humidity control member into a sheet shape, and a refrigerator provided with a humidity control member having high moisture absorption / desorption characteristics is provided. The purpose is to provide.

Further, the present invention controls the release of the antibacterial and fungicide by mixing the antibacterial and fungicide in the humidity control member,
It is an object of the present invention to provide a refrigerator that maintains an antibacterial effect for a long time.

Another object of the present invention is to provide a refrigerator in which the efficiency of moisture absorption and desorption of the humidity control member is improved by optimizing the installation position of the humidity control member.

[0014]

In order to achieve the above object, the present invention relates to a refrigerator in which a humidity control member having moisture absorption / release characteristics is installed in a vegetable room, wherein the humidity control member has a pore diameter of 5 mm.
The main constituent member is a porous material of 0 to 150 angstroms.

According to this configuration, when vegetables are put in the vegetable room, the humidity in the vegetable room increases due to the moisture evaporated from the vegetables. Accompanying this, the amount of moisture absorption of the porous material is increased, so that the porous material absorbs moisture and does not become over-humidified. In addition, when the humidity in the vegetable room decreases, the amount of moisture that can be absorbed decreases, so that moisture not stored in the porous material is released to increase the humidity. When the humidity rises, the amount of moisture absorption increases again to absorb moisture, and this is repeated to maintain an equilibrium state.

At this time, by using a porous material having a pore diameter of 50 to 150 angstroms (average pore diameter of 100 angstroms), it is possible to absorb and desorb moisture in a high humidity state (relative humidity of 80% or more). The amount will vary more than for porous materials of other pore sizes.

Further, the present invention provides a refrigerator in which a humidity control member having a moisture absorbing and releasing property is installed in a vegetable room, wherein the humidity control member comprises a humidity control layer obtained by mixing a resin binder and the porous material. It has a sheet shape.

According to this configuration, when vegetables are put in the vegetable room, the humidity in the vegetable room rises due to moisture evaporated from the vegetables. Accompanying this, the amount of moisture absorption of the porous material is increased, so that the porous material absorbs moisture and does not become over-humidified. At this time, the binder improves the moisture absorption rate at a low temperature, and the moisture is quickly absorbed even when the humidity rises sharply. In addition, when the humidity in the vegetable room decreases, the amount of moisture that can be absorbed decreases, so that moisture not stored in the porous material is released to increase the humidity. When the humidity rises, the amount of moisture that can be absorbed rises and moisture is absorbed, and an equilibrium state is maintained.

Further, the present invention provides a refrigerator in which a humidity control member having moisture absorption / release properties is installed in a vegetable room, wherein the humidity control member includes a humidity control layer containing a porous material having a pore diameter of 50 to 150 angstroms. It has a sheet shape.

According to this configuration, the hygroscopic amount with respect to a change in humidity in a high humidity state (relative humidity of 80% or more) changes more greatly than a porous material having other pore diameters.

In the present invention, the humidity control layer is formed by mixing a resin binder and the porous material.

According to this structure, the moisture-controlling member formed into a sheet by mixing the porous material and the binder to form the humidity-controlling layer has an improved moisture absorption rate at a low temperature due to the binder, and has a sharp rise. Moisture can be absorbed quickly even when the humidity rises.

Further, in the present invention, the binder is 50% or less in weight ratio to the porous material.

According to this configuration, the humidity control member is formed in a sheet shape so that the porous material can come into contact with the outside air without being surrounded by the binder.

According to the present invention, in the humidity control member, the humidity control layer and a film-shaped moisture-permeable material are laminated.

According to this structure, the humidity control layer is sandwiched between the moisture-permeable materials and laminated to form a humidity control member containing a desired amount of the porous material.

In the present invention, the humidity control member contains an inclusion compound of a natural antibacterial agent.

According to this configuration, the inclusion compound of the volatile natural antibacterial agent, whose release rate changes depending on the relative humidity, is used as the volatile natural antibacterial agent when a large amount of fruits and vegetables is stored in the vegetable room and the relative humidity is high. The clathrate is released, and when the vegetables and fruits are not stored in the vegetable compartment, the release of the clathrate of the volatile natural antibacterial agent is suppressed.

Further, in the present invention, the humidity control member is installed on a peripheral surface including an upper surface of the vegetable room, and a portion of the humidity control member containing the inclusion compound of the natural antibacterial agent is included in the vegetable room. It is arranged on the side close to the position facing.

According to this configuration, the inclusion compound of the volatile natural antibacterial agent is released immediately in response to the humidity change in the vegetable compartment.

Further, in the present invention, the humidity control member is installed near the outlet of cool air to the vegetable compartment.

According to this configuration, the humidity control member absorbs excess moisture near the outlet of the cool air where the temperature is the lowest in the vegetable room and dew condensation is likely to occur.

The present invention also provides a plate-like heat diffusion member having a high thermal conductivity outside the peripheral surface including the upper surface of the vegetable compartment, and a plate-like heat diffusion member provided at a position where the heat diffusion member is provided. The humidity control member is provided.

According to this configuration, the low-temperature portion due to the temperature difference in the vegetable compartment is diffused to suppress the occurrence of dew condensation, and to assist moisture absorption by the humidity control member.

Further, the present invention provides a partition for the vegetable compartment,
The humidity control member is installed in some of the partitioned rooms.

According to this configuration, in some rooms in the vegetable room, high humidity is maintained by the humidity control member, and humidity control is not performed in other rooms.

[0037]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an adsorbent which absorbs moisture by an adsorption action, such as porous silica, silica gel, and the like.
It shows the amount of moisture that can be absorbed relative to the relative humidity of zeolite. The abscissa indicates the relative humidity, and the ordinate indicates the amount of moisture absorption as a ratio to the weight of the humidity control material (adsorbent).

According to the figure, the porous silica has a relative humidity of 80.
%, The amount of moisture absorption changes abruptly in the region of% or more, and the amount of moisture absorption and the amount of moisture release are the largest with respect to the change in humidity in this range.

Next, FIG. 2 and FIG. 3 show the results of investigations on the amount of moisture absorption of porous silica having different average pore diameters. In FIG. 2, the abscissa represents the relative humidity, the ordinate represents the amount of hygroscopicity relative to the weight of the humidity control material, and in FIG. 3, the abscissa represents the average pore diameter, and the ordinate represents the relative humidity of 95. %
And the difference in the amount of moisture absorption between the time of 80% and the time of 80%. The average pore diameter examined was 70, 100, 150 Å, and the pore diameter had a distribution of about ± 50 Å due to variations in the production of porous silica.

According to these figures, the amount of change in the amount of moisture that can be absorbed with respect to the relative humidity changes depending on the average pore diameter, and a maximum value exists for the average pore diameter. Average pore size is 10
0 angstrom porous silica with 80% relative humidity
It can be seen that the change in the hygroscopic amount is the largest in the range of about to 95%, and that about 64% of the weight of its own weight can be absorbed and released.

In general, the amount of moisture that can be absorbed by an adsorbent varies depending on the pore diameter and surface area thereof, and the rate of adsorption varies depending on the ambient temperature. Therefore, the data shown in FIGS. (25 ° C, 24 hours)
Using data on the amount of hygroscopicity at which moisture was absorbed, samples of porous silica having different pore diameters having the same ratio of surface area to weight were used.

When this porous silica is installed in a vegetable room of a refrigerator as a humidity control material, when the vegetables and fruits are put in the vegetable room and the relative humidity rises, excess moisture is absorbed to prevent dew condensation. When the humidity decreases, the stored moisture is released to maintain an equilibrium state in a high humidity state, and can be used as a humidity control material. At this time, if porous silica having an average pore diameter of 100 angstroms is used, since the amount of moisture absorbed and released per unit weight is large, the amount of the humidity control material can be reduced, and a wide storage space can be secured in the vegetable compartment. Will be able to

If the humidity control material is not only porous silica but also a porous material such as diatomaceous earth, allophane, and alumina silica, the average pore diameter is set to 100 angstroms. The amount of change increases, and the same effect can be obtained.

The humidity control material may be carried on a non-woven fabric and placed in the vegetable compartment, or may be wrapped in a woven cloth or the like and placed in the vegetable compartment. Moreover, you may arrange | position as a sheet-shaped humidity control member containing a humidity control material.

Next, FIG. 4 shows the structure of a sheet-like humidity control member 20 including the humidity control material 13. Humidity control material 13
Are laminated with a binder 14 so as to be sandwiched between moisture-permeable moisture-permeable materials 12 to form a moisture-conditioning layer 16. A moisture-conditioning material 13 made of powdery porous silica is made of a liquid acrylic resin emulsion. After being mixed with the binder 14 and applied to the sheet-shaped moisture-permeable material 12, the same moisture-permeable material 1
The sheet-shaped humidity control member 20 can be obtained by reducing the thickness by applying pressure by overlapping the two and hardening the binder 14.

Table 1 shows the weight, thickness and the like of the sheet-like humidity control member 20 thus obtained. 0.28 thickness
The amount of the porous silica contained in 1 m ^{2 of the} humidity control member 20 in mm is 98.4 g when the mixing ratio with the binder 14 is 4: 1 and 82 g when the mixing ratio is 2: 1. Was. The porous silica has an average pore size of about 100 Å and an average particle size of about 50 μm.

[0047]

[Table 1]

FIG. 5 shows the result of examining the amount of moisture absorption of the humidity control member 20 in the high humidity region. In the figure,
For the case where the humidity control member 20 is in the form of a sheet according to the above-described manufacturing method and the case where the humidity control material 13 is in the form of powder, the amount of moisture absorption when left at ambient temperatures of 5 ° C. and 25 ° C. for 24 hours is examined. The axis indicates the relative humidity, and the vertical axis indicates the amount of moisture absorption as a ratio to the weight of the humidity control material.

Further, in FIG.
When left for a long time, the moisture absorption amount is almost reached, and the difference between (A) and (B) is a variation in the experiment. (C) and (D) show that when the ambient temperature is low, the rate at which moisture is absorbed decreases, so that the amount of water that can be absorbed is not reached after leaving for 24 hours, and (A) or ( Moisture can be absorbed to the same extent as in B).

According to the figure, when the humidity control material 13 is in powder form at an ambient temperature of 5 ° C., the humidity control material 13 absorbs 25 g of moisture per 100 g at a relative humidity of 95% as shown in FIG. Amount, which means that about 33% of the absorbable amount has been absorbed in 24 hours. When the moisture absorption rate of the humidity control member 20 decreases, excess moisture cannot be quickly absorbed when the humidity rises rapidly, so that a large amount of the humidity control material 13 is required to prevent condensation.

However, the sheet-shaped humidity control member 20 having the structure as shown in FIG. 4 is improved in thermal conductivity by the binder 14 and easily conducts the heat of adsorption generated by the adsorption of moisture. ° C, as shown in (D), a decrease in the rate of adsorbing moisture can be suppressed, and the relative humidity 9
At 5%, the humidity control material 13 has a moisture absorption of 52 g per 100 g, which means that about 68% of the absorbable amount has been absorbed in 24 hours.

As described above, when the humidity control member 20 is formed into a sheet having the binder 14, it is possible to quickly absorb moisture and suppress dew condensation in a rapid rise in humidity.

When the humidity decreases, the humidity control material 13 cannot retain the stored moisture, so that there is no change in the dehumidification rate even at low temperatures, and the amount of moisture that can be absorbed at the relative humidity at that time (for example, relative humidity) In the case of 85%, a1 in FIG. 5)
Dehumidify until it becomes For this reason, even if the humidity decreases rapidly, it is possible to suppress transpiration from fruits and vegetables.

An acrylic resin, a polyester resin, a silicone resin, or the like can be used as the binder 14, and a nonwoven fabric, a woven fabric, a polymer film, or the like can be used as the moisture permeable material 12. Regarding the amount of the binder 14, both the samples having the weight ratio of the porous material to the binder 14 of 4: 1 and 2: 1 showed the same hygroscopic amount as when the porous material was in a powder form. An increase in the amount of the binder closes the periphery of the porous material to reduce the effective surface area and lowers the hygroscopic property. Therefore, the weight ratio of the binder to the porous material is preferably 50% or less.

Further, as the humidity control material 13, a porous adsorbent such as the above-mentioned porous silica, diatomaceous earth, allophane, and alumina silica can be used. By doing so, it is possible to improve the rate of moisture absorption at low temperatures,
When the thickness is about 100 angstroms, a large amount of moisture can be absorbed and released per unit weight with respect to a change in humidity in a high-humidity region.

The average particle size of the porous silica is 12 μm.
Thus, a sheet having a similar thickness could be formed without much difference in moisture absorption and desorption. Therefore, the particle size of the porous material is 60 μm.
m (the variation is ± 20% with respect to an average particle diameter of 50 Å), the same effect can be obtained.

Further, as shown in FIG. 6, the mesh size of the woven fabric of the moisture-permeable material 12 and the moisture-permeable hole diameter of the polymer film are made smaller than the particle size of the moisture-conditioning material 13, and the peripheral portion 12a of the moisture-permeable material 12 is welded. Even in this case, the sheet-shaped humidity control member 20 can be formed. In this case, since the rate of moisture absorption is low, the humidity control material 1
By filling the space 15 between the three with a binder having high thermal conductivity, it is possible to improve the moisture absorption / release rate.

The required amount of the humidity control material 13 changes according to the volume of the vegetable compartment.
May be increased, or as shown in FIG. 7, a plurality of the humidity control members 20 shown in FIG. 4 described above may be stacked. FIG. 8 shows the result of examining the amount of moisture absorption at this time.
In the figure, the vertical axis indicates the amount of moisture absorption per unit area when moisture is absorbed for a certain period of time, and the horizontal axis indicates the number of humidity control members 20.

According to the figure, when three humidity control members 20 are stacked, the moisture absorption is reduced by about 20% as compared with the case where the area is tripled (three times the moisture absorption of one sheet). The space can be used effectively when the area for installing the humidity control member 20 cannot be secured.

Further, as shown in FIG. 9, the volume of the humidity control member 20 can be reduced by alternately stacking the humidity control layers 16 and the moisture permeable materials 12.

Next, when no fruits or vegetables are contained in the vegetable room, no evaporation takes place, so that the humidity in the vegetable room becomes almost equal to the humidity of the outside air by opening and closing the door. In this case, the humidity control material has a small amount of moisture absorption, but functions as a desiccant and reduces the humidity in the vegetable room as much as possible.

FIG. 10 shows the structure of the humidity control member 20 in which the antibacterial layer 17 containing the cyclodextrin inclusion compound of a volatile natural antibacterial agent is formed. In general, when the relative humidity is low, the rate of reduction of natural antibacterial agents due to release is reduced,
As described above, when there is no fruit or vegetable in the vegetable room, it can be further dried by the humidity control member 20 to suppress the release of the natural antibacterial agent, thereby improving the sustainability of the antibacterial effect and making the space in the vegetable room effective. It can be used for

Further, the humidity control member 20 is formed so that the antibacterial layer 17 is located at the end as shown in FIG.
It is desirable to install the product so that it faces the inside of the vegetable compartment, because when the fruits and vegetables are put in and the humidity rises, the natural antibacterial agent is quickly released.

The antibacterial layer 17 is formed by mixing a cyclodextrin clathrate compound of a volatile natural antibacterial agent with a binder 14, or a cyclodextrin clathrate compound of a volatile natural antibacterial agent is formed on the humidity control layer 16. Can be formed. Also, as a natural antibacterial agent, wasabi extract components allyl isothiocyanate, menthol,
Hikitiol, limonene and the like and combinations thereof can be used, and cyclodextrins are α-form, β-form
Either type or gamma type or a combination thereof can be used.

Next, the arrangement of the humidity control member 20 in the vegetable compartment will be described with reference to FIGS. FIG. 12 shows a state where the humidity control member 20 is installed in the vicinity of the cool air outlet 1 b provided on the back surface 1 a of the vegetable compartment 1. The temperature in the vegetable compartment 1 varies, and dew condensation is likely to occur at the lowest temperature in the vegetable compartment 1 near the cold air outlet 1b due to the cool air flowing in the direction of the arrow J. Therefore, by installing the humidity control member 20 near the cool air outlet 1b, it becomes possible to efficiently absorb moisture.

In order to improve the hermeticity of the vegetable room to maintain high humidity in the vegetable room, it is difficult for air to circulate and the vegetable room 1
The temperature variation in the inside becomes larger. In an actual test, when the temperature of the central portion of the vegetable compartment 1 was 6 ° C., the temperature of the cold-air outlet 1b on the vegetable compartment side was 1 ° C. When about 600 g of spinach is put in this state, a large amount of dew is generated.

The dew condensation water may be absorbed by the humidity control member 20, but a large amount of the humidity control material is required. FIG.
As shown in the cross-sectional view of the back 1a of the vegetable compartment 1, when a heat diffusion member 4 such as a stainless steel plate was installed outside the vegetable compartment 1 near the cold air outlet 1b, dew condensation was reduced. Further, as shown in FIG. 14, the vegetable compartment 1 near the cold air outlet 1b
When the humidity control member 20 was installed on the side, no dew condensation occurred at all.

As described above, the low-temperature portion in the vegetable compartment 1 is diffused by installing the heat diffusion member 4 made of not only stainless steel but also a metal plate having a high thermal conductivity on the outer wall surface of the vegetable compartment 1. Therefore, the amount of the humidity control member 20 can be minimized by reducing the dew condensation. Further, the heat diffusion member 4 is provided with the cold air outlet 1 which is likely to be at the lowest temperature.
It is desirable to provide it outside the vegetable room near b.

As shown in FIGS. 15 and 16, when the humidity control member 20 and the heat diffusion member 4 are installed on the lid 5 of the vegetable compartment 1 in the same manner as described above, the same effects as described above can be obtained. The weight of the lid 5 increases, and the hermetically sealed product in the vegetable room can be improved.

At this time, as shown in FIGS. 17 and 18, the laminated plate 8 in which the humidity control member 20 and the heat diffusion member 4 are integrated can be fitted into the lid 5 of the vegetable compartment 1.

Further, the inside of the vegetable room 1 may be divided into a plurality of rooms, and the humidity control member 20 may be installed only in some of the rooms. Root vegetables and those that do not require high humidity can be placed in a room without the humidity control member 20, and those with a large amount of transpiration such as leafy vegetables can be placed in a room with the humidity control member 20. The humidity control member 20
Can be installed efficiently, and can be used according to the fruits and vegetables to be stored. At this time, a humidity control member 20 may be provided on one surface of the partition plate 11 as shown in FIG.

[0072]

According to the first aspect of the present invention, high humidity is maintained in the vegetable room and dew condensation is prevented, and the amount of moisture absorbed and released per unit weight of the humidity control material with respect to a change in humidity in a high humidity region is increased. Therefore, the amount of the humidity control material can be reduced, and a large storage space can be secured in the vegetable room.

According to the second aspect of the present invention, the humidity control member can be arranged on the inner wall of the vegetable room or the like, so that the space occupied in the vegetable room can be reduced and the moisture absorption rate at low temperatures can be improved. This makes it possible to quickly absorb moisture against a rapid rise in humidity and suppress dew condensation.

According to the third aspect of the present invention, since a large amount of moisture can be absorbed and released per unit weight with respect to a change in humidity in a high humidity region, the efficiency is improved.

According to the fourth and fifth aspects of the present invention, when the humidity control member is formed into a sheet having a binder, it is possible to quickly absorb moisture and suppress dew condensation in a rapid rise in humidity at a low temperature. Become.

According to the sixth aspect of the present invention, the sheet-like humidity control member can be easily formed.

According to the invention of claim 7, the antibacterial effect in the vegetable room and the antibacterial effect can be maintained for a long time.

According to the eighth aspect of the present invention, the natural antibacterial agent is rapidly released when the humidity rises due to the introduction of fruits and vegetables.

According to the ninth aspect of the present invention, the humidity control member absorbs moisture in a portion where the temperature is the lowest in the vegetable compartment and where dew condensation is likely to occur, so that moisture can be absorbed efficiently.

According to the tenth aspect of the present invention, the low-temperature portion in the vegetable compartment is thermally diffused by the heat diffusion member to prevent dew condensation from occurring, and then the moisture is absorbed by the humidity control member, thereby reducing the amount of the humidity control member. can do.

According to the eleventh aspect of the present invention, the humidity control member can be installed efficiently and can be used according to the preserved fruits and vegetables.

[Brief description of the drawings]

FIG. 1 is a diagram showing the amounts of various adsorbents that can be absorbed by moisture.

FIG. 2 is a diagram comparing the amounts of moisture absorption that can be caused by the difference in the average pore diameter of a porous material.

FIG. 3 is a graph comparing the amounts of change in the amount of moisture absorption in a high-humidity region due to differences in the average pore diameter of a porous material.

FIG. 4 is a configuration diagram of a sheet-shaped humidity control member.

FIG. 5 is a diagram comparing the amount of moisture absorption that can be performed depending on the ambient temperature and the state of the humidity control material.

FIG. 6 is a configuration diagram of a sheet-shaped humidity control member.

FIG. 7 is a configuration diagram in which sheet-shaped humidity control members are overlapped.

FIG. 8 is a diagram showing the amount of moisture absorption when the sheet-like humidity control members are overlapped.

FIG. 9 is a configuration diagram of a sheet-like humidity control member.

FIG. 10 is a configuration diagram of a sheet-like humidity control member including an antibacterial layer.

FIG. 11 is a configuration diagram of a sheet-like humidity control member including an antibacterial layer.

FIG. 12 is a diagram showing an arrangement of humidity control members in a vegetable room.

FIG. 13 is a view showing an arrangement of a heat diffusion member in a vegetable room.

FIG. 14 is a diagram showing an arrangement of humidity control members in a vegetable room.

FIG. 15 is a view showing an arrangement of a humidity control member in a vegetable room.

FIG. 16 is a diagram showing an arrangement of a humidity control member in a vegetable room.

FIG. 17 is a diagram in which a humidity control member and a heat diffusion member are stacked.

FIG. 18 is a diagram showing an arrangement of humidity control members in a vegetable room.

FIG. 19 is a diagram showing an arrangement of humidity control members in a vegetable room.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vegetable room 12 Moisture permeable material 13 Humidity control material 14 Binder 16 Humidity control layer 17 Antibacterial layer 20 Humidity control member

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kayo Takashima 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka Inside Sharp Corporation

Claims (11)

[Claims] 1. A refrigerator in which a humidity control member having moisture absorption / release characteristics is installed in a vegetable compartment, wherein the humidity control member is mainly made of a porous material having a pore diameter of 50 to 150 Å. Refrigerator to feature. 2. A refrigerator in which a humidity control member having moisture absorption / release characteristics is installed in a vegetable room, wherein the humidity control member is a sheet having a humidity control layer obtained by mixing a resin binder and a porous material. A refrigerator characterized by the following. 3. A refrigerator in which a humidity control member having moisture absorption / release characteristics is installed in a vegetable room, wherein the humidity control member has a pore diameter of 5 mm.
A refrigerator comprising a sheet having a humidity control layer containing a porous material of 0 to 150 angstroms. 4. The refrigerator according to claim 3, wherein the humidity control layer is formed by mixing a resin binder and the porous material. 5. The refrigerator according to claim 2, wherein the binder has a weight ratio of 50% or less with respect to the porous material. 6. The refrigerator according to claim 2, wherein the humidity control member is formed by laminating the humidity control layer and a film-like moisture-permeable material. 7. The humidity control member according to claim 1, wherein an inclusion compound of a natural antibacterial agent is contained.
Refrigerator according to any of the above. 8. The humidity control member is installed on a peripheral surface including an upper surface of the vegetable compartment, and a portion of the humidity control member containing the inclusion compound of the natural antibacterial agent faces the vegetable compartment. The refrigerator according to claim 7, wherein the refrigerator is arranged on a side close to the refrigerator. 9. The refrigerator according to claim 1, wherein the humidity control member is installed near an outlet of the vegetable compartment. 10. A plate-shaped heat diffusion member having a high thermal conductivity is provided outside a peripheral surface including an upper surface of the vegetable room, and the humidity control member is provided on a side of the vegetable room where the heat diffusion member is installed. The refrigerator according to any one of claims 1 to 8, wherein a refrigerator is installed. 11. The refrigerator according to claim 1, wherein the vegetable room is partitioned, and the humidity control member is installed in a part of the partitioned room.