JP3366140B2 - refrigerator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator having a substantially sealed vegetable compartment in which vegetables can be stored fresh for a long period of time.

[0002]

2. Description of the Related Art In recent years, as a method of storing vegetables in a refrigerator in a fresh state for a long period of time, as disclosed in Japanese Patent Laid-Open No. 63-213784, moisture-sensing is provided in a vent of a substantially sealed vegetable container. A method of providing a seat has been proposed.

The refrigerator proposed conventionally will be described below. FIG. 9 is a cross-sectional view showing a vegetable compartment of a conventionally proposed refrigerator, in which 1 is a refrigerator main body, a freezing compartment (not shown) is provided at the top of the refrigerator main body, and a refrigerating compartment 2 and a vegetable compartment 3 are provided under the refrigerator compartment in order. It is provided.

A partition plate 4 partitions the refrigerating compartment 2 and the vegetable compartment 3 from each other, and vent holes 5 and 6 for passing cold air are provided in the front and rear portions of the partition plate, respectively. Reference numeral 7 denotes a vegetable storage container which is a storage container having an open top surface, is provided in the vegetable compartment 3, and can be pulled out forward by opening the door 8.

Reference numeral 9 denotes a lid which constitutes a storage container together with the vegetable storage container 7 by allowing the upper surface of the vegetable storage container 7 to be detachable and provided with a circular vent hole 10. At the rear end of the lid 9, a flow dividing plate 11 is provided which is folded back upward.

Reference numeral 12 denotes a rectangular moisture sensitive sheet made of, for example, a polyvinyl alcohol film, and as shown in FIG. 10, the opposite side portion of the moisture absorbing sheet is covered with the adhesive 13 so as to cover the vent hole 10. It is fixed to the bottom side. The moisture-sensitive sheet 12 has the property of swelling and expanding when the humidity is 80% or more, and contracting when the humidity is 80% or less.

The operation of the vegetable storage container of the refrigerator constructed as above will be described below. First,
The cold air from the refrigerating chamber 2 passes through the ventilation holes 5 of the partition plate 4, is then branched by the flow dividing plate 11, and flows to the upper surface side of the lid 9 and the rear side of the vegetable storage container 7.

Then, a part of the cool air diverted to the upper surface side of the lid 9 flows into the vegetable storage container 7 through the ventilation hole 10 provided in the lid 9, and the remaining cool air and the rear side of the vegetable storage container 7 are placed. The cold air passing through returns to the inside of the refrigerating chamber 2 through the ventilation holes 6 of the partition plate 4.

Now, when the vegetables are in a low temperature storage state due to the flow of cold air as described above, the humidity in the vegetable storage container 7 gradually decreases when the ventilation port 10 shown in FIG. 10 is open. However, when the humidity drops below 80%,
By drying and contracting the moisture-sensitive sheet 12 which has been open the vent hole 10 until now, the vent hole 10 is closed by closely contacting the lid 9 as shown in FIG.

When the inside of the vegetable container 7 is completely sealed, the moisture contained in the vegetable container 7 becomes high due to the steam released by the breathing action of the vegetables.
When it exceeds 0%, the moisture-sensitive sheet 12 that has closed the vent 10 is gradually swollen and extends, and the vent 10 is opened again as shown in FIG.

Therefore, the inside of the vegetable container 7 is prevented from being over-dried or over-humidified for a long time, and the vegetables can be stored for a long time.

[0012]

However, in the above-mentioned configuration, since the opening / closing of the vent hole 10 is performed by the moisture sensitive sheet 12 that swells and expands gradually, or gradually dries and contracts, the responsiveness is extremely high. Bad for

Therefore, the avoidance of the over-humidity state is delayed, the dew condensation of the lid 9 cooled by the cool air from the refrigerating chamber 2 cannot be sufficiently prevented, or the avoidance of the over-dry state is delayed, and the vegetables are prevented. The inflow of cold air from the refrigerating chamber 2 into the storage container 7 becomes long, and soft vegetables such as spinach are dried.

Since the moisture-sensitive sheet 12 is made of a swelling material such as a polyvinyl alcohol film, the moisture-sensitive sheet 12 is not only responsive to moisture absorption and moisture release, but is also regenerated by repeating moisture absorption and moisture release several times. There was a problem that it was difficult to return to the shape of.

Therefore, the refrigerator proposed hitherto cannot maintain the humidity in the vegetable compartment at an appropriate high humidity for a long period of time, and thus the vegetables cannot be stored fresh for a long period of time. there were.

In view of the above problems, the present invention reliably and automatically controls the humidity in a vegetable storage container to prevent dew condensation, and always maintains a high humidity suitable for vegetables so that the vegetables can be kept fresh for a long period of time. The purpose is to provide a refrigerator.

[0017]

To achieve this object, a refrigerator of the present invention comprises a vegetable storage container having an open top surface,
A lid that is closely attached to cover the top surface.
However, a moisture permeable membrane is integrally molded in the opening of the lid,
The moisture permeable membrane is made of a water vapor permeable base cloth and a shape memory resin film.
The shape memory resin film surface of the rum is the vegetable storage container
The shape memory is made by laminating the inside of
Resin film is hydrophilic shape memory resin and hydrophobic shape
Mix with a memory resin at a predetermined ratio, and from 5 ℃ to 10
When the temperature exceeds the specified temperature within the temperature range of ℃
It has the property of increasing rapidly, and the temperature inside the vegetable storage container
As the temperature increases, the respiration and transpiration of vegetables are increased.
At such times, the water vapor transmission rate is high and the temperature inside the vegetable storage container is high.
When the temperature is stable and the amount of vegetables stored is small,
When the water evaporation is small, the moisture permeability is small .

[0018] In addition, the moisture permeable membrane is the base fabric and the shape-memory resin film
In this case, the adhesive layers are adhered at appropriate intervals through adhesive layers.

Further, the base cloth is treated with water repellent water.
In addition, a fruit container arranged in a notched portion on the upper back surface of the vegetable storage container and the moisture permeable membrane on the back surface of the fruit container.

Further, the bottom of the fruit container is provided with a plurality of openings of arbitrary size.

[0021]

[Action] refrigerator of the present invention, the above-described configuration, the moisture permeability of the moisture permeable membrane is automatically quickly change in the temperature range of 5 ℃ ~10 ℃, such as warm beer and juice immediately after the vegetable storage and vegetable compartment When the temperature of the vegetable storage container rises due to the storage of vegetables, the moisture vapor permeability is large when the breathing action and the transpiration action of the vegetables are active, and when the temperature inside the vegetable storage container is stable at a low temperature or the amount of stored vegetables is small. When the amount of water vapor from the vegetables is small and the amount of water vapor from the vegetables is small, the moisture permeability is small, so that it is possible to keep the inside of the vegetable storage container at a high humidity suitable for vegetables at all times while preventing dew condensation.

Further , since the moisture permeable membrane is integrally formed in the opening of the lid, the number of parts can be reduced and the cost can be reduced.

[0023] In addition, the moisture permeable membrane is the base fabric and the shape-memory resin film
The shape memory resin can be reinforced without significantly lowering the water vapor permeability because the adhesive layers are adhered to each other through the adhesive layers scattered at appropriate intervals.

Further, since the moisture permeable membrane is arranged so that the surface of the shape memory resin film is the inside of the vegetable storage container, the moisture permeability can be changed quickly in response to changes in temperature and humidity inside the vegetable storage container. Can be made.

Further, since the base cloth is subjected to the water repellent treatment, it is possible to prevent the base cloth from being soiled and to keep the moisture permeability of the moisture permeable membrane stable.

Further, since the fruit container is provided in the cutout portion on the upper back surface of the vegetable storage container, and the moisture permeable membrane is provided on the back surface of the fruit container, the effect of preventing dew condensation on the back surface is particularly large, and the fruit container is particularly large. Condensation water can be prevented from collecting inside.

Further, since the bottom surface of the fruit container is provided with a plurality of openings of arbitrary size, it is possible to suppress the occurrence of dew condensation on the outer wall of the bottom surface of the fruit container.

[0028]

EXAMPLE 1 An example of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view of the vegetable compartment 14 of the refrigerator according to the present invention. The vegetable compartment 14 is provided below the refrigerating compartment 15, and the vegetable compartment 14 and the refrigerating compartment 15 are partitioned by a partition plate 16. Ventilation holes 16a and 16b are provided in the front and rear of the partition plate 16 so that the cold air in the refrigerating compartment 15 circulates in the vegetable compartment 14.

The vegetable compartment 14 is mounted on rails 17a horizontally attached to the left and right sides of the vegetable compartment door 17, and the vegetable storage container 18 is opened and closed integrally with the door 17, and the door 17 is closed. Sometimes, the lid 19 is provided so as to closely cover the top opening of the vegetable storage container 18. In addition, as shown in FIG.
There is an opening 19a at the rear of the, and the moisture permeable membrane 20 is integrally molded in the opening 19a.

As shown in FIG. 3, the moisture permeable membrane 20 comprises a polyurethane resin-based hydrophilic shape-memory resin and a hydrophobic shape-memory resin in a predetermined ratio on a base cloth 21 such as nylon or polyester. Shape memory resin film 2 obtained by mixing
2 is adhered through the adhesive layers 23 scattered at appropriate intervals.

Further, the shape memory resin film 22 of the moisture permeable film
It is arranged so that the surface is inside the vegetable storage container 18.

Here, the characteristics of water vapor permeability of the moisture permeable membrane using the shape memory resin film of the present invention will be described with reference to FIG. Fig. 4 shows the moisture permeability (g / m ^{2) of} various moisture permeable membranes.
The relationship between the (day) and the partial pressure of water vapor is obtained by an experiment.

In FIG. 4, a straight line A shows the relationship between the water vapor transmission rate and the water vapor partial pressure of a general moisture permeable membrane, a curve B shows the characteristics of a moisture permeable membrane made of a hydrophobic shape memory resin film, and a curve C shows the hydrophilicity. The characteristic of the moisture permeable membrane made of the shape memory resin film of No. 1 is as follows. Curve D is made of the shape memory resin film obtained by mixing the hydrophilic shape memory resin of the present invention and the hydrophobic shape memory resin at a predetermined ratio. It shows the characteristics of the moisture permeable membrane.

That is, A (general moisture permeable film) indicates that the moisture permeability does not change much even if the temperature and humidity rise. On the other hand, the moisture-permeable film made of the shape memory resin film has a temperature Tp that is about 15 ° C. lower than the glass transition temperature Tg.
It has a characteristic that the water vapor permeability rapidly increases when the temperature becomes higher than (for example, 5 ° C. to 10 ° C.).

However, the degree of change in the water vapor transmission rate is different from each other, and in the case of B (hydrophobic shape memory resin), this T
When it is more than p, the water vapor permeability becomes large, but it does not become larger than that of A. Further, C (hydrophilic shape memory resin) has too high water vapor permeability at low temperature, and constantly has higher water vapor permeability than A.

However, in D (the mixed type shape memory resin of the present invention), the water vapor permeability is lower than A at low temperature, and the water vapor permeability rapidly increases at the temperature Tp described above, and the temperature shown in FIG. It reverses at Tc and becomes larger than A at high temperatures.

In general, the respiration rate of vegetables is low at low temperatures and high at high temperatures, as shown in FIG. 5, especially when the temperature reaches a certain temperature (about 10 ° C. for spinach). Increases and a large amount of water evaporation occurs.

That is, as can be seen from the comparison between FIG. 4 and FIG. 5, the moisture permeable film 20 made of the shape memory resin film 22.
Can change the water vapor transmission rate in response to changes in the breathing volume of vegetables, so when the environment inside the vegetable container becomes hot and humid, the water vapor transmission rate increases rapidly and prevents condensation. At low temperatures and low humidity, the moisture permeability suddenly decreases and it works to prevent drying.

This is because when the temperature is lower than the glass transition temperature Tg, the gap between the molecules of the resin is contracted to suppress the water vapor permeability, and when the temperature is higher than the glass transition temperature Tg, the molecular motion of the amorphous phase of the resin is active. This is because the gap between the molecules of the resin is widened to facilitate the diffusion of water vapor molecules and to increase the water vapor permeability.

Further, since the shape memory resin film 22 is moderately hydrophilic, a reasonably large amount of water vapor molecules dissolved in the shape memory resin film 22 has a synergistic effect, so that the glass transition temperature Tg or higher is obtained. In a dew-condensing environment where the surface of the shape-memory resin film 22 is wet at a high temperature, the water vapor transmission rate rapidly increases (the principle of the shape-memory resin is described in the April 1993 issue of the trigger, etc.).

It is considered that the difference between Tg and Tp is due to the temperature range in the glass transition region of the shape memory resin.

With respect to the refrigerator configured as described above,
The operation will be described with reference to FIGS. 1 to 5.

First, when the vegetables are stored in the vegetable storage container 18, the moisture which is discharged from the vegetables themselves by the breathing action causes the humidity in the substantially sealed vegetable storage container 18 to be high. Immediately after storing the vegetables, since the temperature of the vegetables is high and the breathing action is active, a large amount of water is discharged, so that the inside of the vegetable storage container 18 is usually in an over-humid state, and dew condensation is formed behind the lid body 19. Is likely to occur.

However, in such a state, as shown in FIG. 4 , the moisture permeable membrane 20 provided on the lid 19 of the vegetable compartment 14 has a large water vapor permeable capacity, so that excess water is removed. As shown in the schematic diagram of No. 3, the vegetable compartment 14 side with a high water vapor partial pressure (Pi) moves to the outside with a low water vapor partial pressure (Po), so an over-humidity state is avoided and dew condensation is prevented. .

When the temperature in the vegetable compartment 14 becomes lower than the glass transition temperature Tg of the shape memory resin 22 (for example, 5 ° C. to 10 ° C.) after the passage of time after the vegetables are stored. The water vapor permeability of the moisture permeable membrane 20 decreases, so that the high humidity (80%) suitable for storing vegetables in the vegetable compartment 14 is obtained.
~ 95% RH). At this time, since the breathing action of vegetables is suppressed and the amount of water vaporized is small, dew condensation can be prevented even if the water vapor permeability is low.

When the amount of stored vegetables is very large, the heat of respiration of the vegetables is high and the temperature in the vegetable compartment 14 is high, so that water is evaporated from the vegetables and dew condensation easily occurs. When the moisture permeability of the membrane 20 is increased to prevent dew condensation, and the amount of vegetables stored is small, the heat in the vegetables is small and the temperature in the vegetable compartment 14 is low, and the evaporation of water from the vegetables is small. Although it becomes easy to dry, at this time, the moisture permeability of the moisture permeable membrane 20 becomes small, and it functions to prevent the vegetables from drying.

Therefore, the moisture permeability of the moisture permeable membrane 20 appropriately changes in accordance with the change of the breathing amount according to the temperature of the vegetables and the stored amount of the vegetables, so that the humidity control is more appropriate than the conventional general moisture permeable membrane. It is possible to maintain both high humidity and prevent dew condensation.

As described above, according to this embodiment, the vegetable compartment 1
4 is substantially sealed by the vegetable storage container 18 and the lid 19 having the moisture permeable membrane 20, and the moisture permeable membrane 20 is composed of the water vapor permeable base fabric 21, the hydrophilic shape memory resin, and the hydrophobic shape memory resin. By configuring the shape memory resin film 22 obtained by mixing at a predetermined ratio, the water vapor permeability is appropriately changed according to the temperature change in the vegetable compartment 14 and the amount of stored vegetables, and the vegetable compartment 1
Since high humidity suitable for vegetables can be maintained while preventing dew condensation inside 4, vegetables can be stored for a longer period of time than before.
Further, the moisture permeable membrane 20 is not mechanically deformable, and the characteristic of water vapor permeability can be maintained for a long period of time, so that it is more durable than the conventional example.

Further, the base cloth 21 and the shape memory resin film 2
Since the moisture permeable film 20 to which 2 is adhered is integrally molded in the opening 19a of the lid body 19, the strength of the moisture permeable film 20 can be maintained and the number of parts can be reduced and the cost can be reduced. The shape memory resin film 22 alone is thin (several microns to several tens of microns) and is easily broken, so that it cannot be integrally molded, but it can be formed by laminating the base cloth 21.

Further, since the moisture permeable film 20 is formed by adhering the base cloth 21 and the shape memory resin film 22 through the adhesive layers which are scattered at appropriate intervals, the shape memory resin is not significantly reduced in moisture permeability. The film 22 can be reinforced.

Further, the shape memory resin film 22 of the moisture permeable film
Since the surface is arranged inside the vegetable storage container 18, the water vapor transmission rate can be quickly changed with respect to changes in temperature and humidity inside the vegetable storage container 18.

Second Embodiment Next, a second embodiment will be described with reference to FIG. The difference from the first embodiment is that the structure of the vegetable compartment is the same except for the structure of the moisture permeable membrane, and therefore a detailed description of the structure will be omitted and only the structure of the moisture permeable membrane will be described.

FIG. 6 shows a cross section of the moisture permeable membrane 24 in the second embodiment, which is a woven fabric such as nylon or polyester with adhesive layers 26 scattered on both sides of the shape memory resin film 25 at appropriate intervals. A base cloth 27 made of non-woven fabric is bonded.

Further, the base cloth 27 is subjected to a water repellent treatment such as fluorine or silicon. As described above, unlike the first embodiment, both sides of the shape memory resin film 25 have the base cloth 27.
Since it is protected by, it is possible to prevent the shape memory resin film 25 from breaking.

Further, since the base cloth 27 is water repellent, it is possible to prevent stains due to food and the like and to keep the moisture permeability of the moisture permeable film 24 stable.

The base fabrics 27 on both sides may or may not be made of the same material as long as they have moisture permeability.
Further, although not shown, the base cloth 26 may be overlapped on both sides of the shape memory resin film 25 without interposing the adhesive layer 26, and only the periphery may be bonded or fixed by sandwiching it with another resin molded product.

Further, the shape memory resin film 25 and the base cloth 2
It is also possible to knead an antifungal agent into 7 to provide an antifungal effect.

(Embodiment 3) Next, a third embodiment will be described with reference to FIGS. 7 and 8. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

The difference from the first embodiment is that the fruit container 29 is arranged in the cutout portion in the upper rear portion of the vegetable storage container 28,
Lattice-shaped openings 30 formed on the back surface of the fruit container 29
The moisture permeable membrane 31 made of a shape memory resin having the same characteristics as that provided on the lid 19 is integrally molded.

Further, the bottom surface 32 of the fruit container 29 is provided with a large number of openings 32a having a size such that small fruits and vegetables do not drop.

With respect to the refrigerator configured as described above,
The operation will be described with reference to FIGS. 7 and 8 only for the part different from that of the first embodiment.

As shown in FIG. 7, in a refrigerator having a structure in which a fruit container 29 is arranged in a notched portion on the upper back surface of the vegetable storage container 28, and the back surface of the fruit container 29 forms a part of the back surface of the vegetable storage container 28. When the fruits and vegetables are stored in the fruit container 29, dew condensation is particularly likely on the back surface of the fruit container 29 which is liable to be low in temperature due to its structure. It was

However, a moisture permeable film 31 is provided on the back surface of the fruit container 29.
Since it is integrally molded, the water vapor transmission rate is appropriately controlled according to the same principle as described in the first embodiment.

Further, the water vapor evaporated from the fruits and vegetables stored in the bottom portion of the vegetable storage container 28 passes through the opening 32a of the bottom surface 32 of the fruit container 29, and the upper lid 19 or the rear surface of the fruit container 29 is transparent. The water vapor is released from the wet films 20 and 31 to the outside of the low humidity container due to the partial pressure difference of water vapor.

As described above, according to the present embodiment, the fruit container 29 is arranged in the notch portion on the upper back surface of the vegetable storage container 28, and the shape of the fruit container 29 is formed in the lattice-shaped opening 30 formed on the back surface. By integrally molding the moisture-permeable film 31 made of a memory resin, it is possible to maintain an appropriate high humidity while suppressing dew condensation on the back surface of the fruit container 29 where dew condensation is particularly likely to occur. Prevent water rot without drying stored fruits and vegetables.

Further, water vapor evaporating from the fruits and vegetables stored in the bottom of the conventional vegetable storage container 28 is condensed on the outside of the bottom surface 32 of the fruit container 29 in large quantities, and the condensed water falls to form water on the fruits and vegetables at the bottom. Although it may rot, by providing a large number of openings 32a in the bottom surface 32 of the fruit container 29, the effect of the moisture permeable membranes 20 and 31 on the upper lid 19 or the fruit container 29 rear surface is sufficiently exerted. With this configuration, it is possible to suppress the generation of dew condensation on the outer wall of the bottom surface 32 of the fruit container 29 and prevent the dew condensation water from dropping and causing water rot on the fruits and vegetables at the bottom. Can be held.

It is best to use the two moisture permeable membranes 20 and 31 at the same time, but only one of them may be used in consideration of cost.

[0069]

Refrigerator of the present invention as described above, according to the present invention may possess and vegetables storage container top is opened, the lid and which is provided closely to cover the top opening of the lid Moisture permeable membrane
Is integrally molded, and the moisture permeable membrane is made of water vapor permeable material.
Shape memory resin film on the base cloth
Laminate so that the inside surface is inside the vegetable storage container
The shape memory resin film has a hydrophilic shape.
Memory resin and hydrophobic shape memory resin are mixed at a predetermined ratio.
Predetermined temperature included in the temperature range of 5 ℃ to 10 ℃
It has the characteristic that the water vapor transmission rate increases rapidly when the temperature exceeds
As the temperature inside the vegetable storage container rises,
When breathing or transpiration is active, the water vapor transmission rate is high.
When the temperature in the vegetable storage container stabilizes at a low temperature or when storing vegetables
Water vapor permeability when the amount of water is small and the amount of water evaporated from vegetables is small.
The moisture permeability of the moisture permeable membrane changes appropriately according to the change in breathing volume due to the temperature of the vegetables and the amount of vegetables stored, making it more suitable than conventional moisture permeable membranes. Humidity control becomes possible, and the water vapor permeability changes appropriately according to the temperature change in the vegetable compartment and the amount of vegetables stored, and it is possible to maintain high humidity suitable for vegetables while preventing dew condensation in the vegetable compartment. It can be stored fresh for a long time.

Further, since the moisture permeable membrane is not mechanically deformed, the variability of the water vapor permeability can be maintained for a long period of time, which is durable.

[0071] In addition, integrally molded into the opening of the lid of the moisture permeable membrane
Therefore, the number of parts can be reduced and the cost can be reduced.

[0072] In addition, the moisture permeable membrane is the base fabric and the shape-memory resin film
The shape memory resin can be reinforced without significantly lowering the water vapor permeability because the adhesive layers are adhered to each other through the adhesive layers scattered at appropriate intervals.

Further, since the moisture permeable membrane is arranged so that the surface of the shape memory resin film is on the inside of the vegetable storage container, the moisture permeability can be changed quickly in response to changes in temperature and humidity inside the vegetable storage container. Can be made.

Further, since the base cloth is subjected to the water repellent treatment, it is possible to prevent stains due to food and the like and to keep the moisture permeability of the moisture permeable film 24 stable.

Further, since the fruit container is provided in the cutout portion on the upper back surface of the vegetable storage container and the moisture permeable membrane is provided on the back surface of the fruit container, the back surface of the fruit container where dew condensation is particularly likely to occur. Since it is possible to suppress the dew condensation on and to maintain an appropriate high humidity, it is possible to prevent water spoilage without drying the fruits and vegetables stored in the fruit container.

Further, since the bottom surface of the fruit container is provided with a plurality of apertures of arbitrary size, it is possible to maintain an appropriate high humidity while suppressing the dew condensation on the back surface of the fruit container where dew condensation is likely to occur. Therefore, it is possible to prevent water rot without drying the fruits and vegetables stored in the fruit container.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a vegetable compartment of a refrigerator according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a lid of a vegetable compartment of a refrigerator according to the first embodiment of the present invention.

FIG. 3 is a partially enlarged cross-sectional view of the moisture permeable membrane of the refrigerator according to the first embodiment of the present invention.

FIG. 4 is an explanatory view of the water vapor permeable function of the moisture permeable membrane and the general moisture permeable membrane in the embodiment of the invention.

FIG. 5 is an explanatory diagram showing the relationship between the respiration rate of vegetables and the temperature.

FIG. 6 is a partially enlarged cross-sectional view of a moisture permeable membrane in the second embodiment of the present invention.

FIG. 7 is a vertical sectional view of a vegetable compartment of a refrigerator according to a third embodiment of the present invention.

FIG. 8 is a perspective view of a fruit container according to a third embodiment of the present invention.

FIG. 9 is a vertical sectional view of a vegetable compartment of a conventional refrigerator.

FIG. 10 is a perspective view showing an open state of a moisture sensitive sheet of a lid of a conventional vegetable compartment.

FIG. 11 is a perspective view showing a closed state of a moisture sensitive sheet of a lid of a conventional vegetable compartment.

[Explanation of symbols]

18 vegetable storage containers 19 Lid 19a Opening of lid 20 moisture permeable membrane 21 Base cloth 22 Shape memory resin film 23 Adhesive layer 24 moisture permeable membrane 25 Shape memory resin film 26 Adhesive layer 27 base cloth 28 Vegetable storage containers 29 fruit containers 31 Water vapor transmission rate 32a open hole

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-3043 (JP, A) JP-A-4-370276 (JP, A) JP-A-6-313062 (JP, A) JP-A-5- 222671 (JP, A) JP 63-34477 (JP, A) JP 62-236441 (JP, A) JP 2-195181 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) F25D 23/00 302

Claims (6)

(57) [Claims] And vegetables storage vessel 1. A top is open, the possess a lid member provided in close so as to cover the top surface, and moisture permeable film is integrally molded to the opening of the lid The moisture permeable membrane is formed of a shape-memory resin film on a water vapor permeable base cloth.
The shape memory resin film surface of the rum is the vegetable storage container
The shape memory resin film is laminated so as to be the inner side of the
It is made by mixing hydrophobic shape memory resin with a predetermined ratio,
Above a certain temperature within the temperature range of 5 ℃ to 10 ℃
When the vegetable storage is
As the temperature inside the storage container rises,
When the transpiration is active, the water vapor permeability is large,
When the temperature inside the container is stable at low temperature and the storage amount of vegetables is small
When the water vapor from the vegetables is small, the water vapor transmission rate is small.
Refrigerator that. 2. The refrigerator according to claim 1, wherein the shape memory resin is a polyurethane resin and the base fabric is a woven or non-woven fabric such as nylon or polyester. 3. A moisture permeable membrane comprises a base cloth and a shape memory resin film.
Adhered through adhesive layers scattered at appropriate intervals
The refrigerator according to claim 1 or 2 . 4. The method according to claim 1, wherein the base cloth is water repellent treated.
Refrigerator according to any one of claims. 5. A cutout portion on the upper rear surface of the vegetable storage container.
And the moisture-permeable membrane on the back of the fruit container.
The refrigerator according to any one of claims 1 to 4, further comprising: 6. The bottom of the fruit container has a plurality of arbitrary sizes.
The refrigerator according to claim 5 , wherein the refrigerator is provided with an opening .