WO2015162909A1

WO2015162909A1 - Vegetable case and refrigerator

Info

Publication number: WO2015162909A1
Application number: PCT/JP2015/002159
Authority: WO
Inventors: 久美子鈴木; 淳宏大島
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2014-04-24
Filing date: 2015-04-21
Publication date: 2015-10-29
Also published as: JP2015209987A; CN207361005U; DE212015000111U1

Abstract

Provided are: a vegetable case having an opening (3) in at least a portion of a wall surface configuring a vegetable storing section, a regenerated cellulose membrane (4) formed without using a backing being provided in the opening (3); and a refrigerator using same.

Description

Vegetable case and refrigerator

The present invention relates to a vegetable case and a refrigerator provided with a vegetable case.

Generally, a home refrigerator is provided with a vegetable room, and various ideas have been made so that vegetables stored in the vegetable room can be stored in good condition. One of them is a vegetable container provided with a moisture permeable membrane in order to maintain the humidity in the vegetable room substantially constant (see, for example, Patent Document 1).

FIG. 35 shows a moisture-sensitive moisture permeable membrane mounted on the refrigerator described in Patent Document 1. The moisture and moisture permeable membrane 404 is composed of a moisture permeable and moisture permeable membrane base material 405 and a regenerated cellulose layer having moisture permeability that changes the amount of moisture permeation depending on humidity.

However, the moisture-permeable and moisture-permeable membrane 404 described in Patent Document 1 has a structure in which the regenerated cellulose layer 406 having a moisture-permeable effect is held by the base material 405. As described above, in the structure in which the moisture permeable and moisture permeable membrane 404 is formed using the base material 405, the concentration of viscose that is a raw material of the regenerated cellulose layer 406 is controlled in order to control the film thickness of the regenerated cellulose layer 406. Adjustment and density adjustment of the base material are necessary, and the manufacturing process of the moisture-permeable and moisture-permeable membrane 404 becomes complicated. For this reason, it has the subject that it is difficult to make a general-purpose product and the manufacturing cost becomes high.

Further, the moisture-permeable and moisture-permeable membrane 404 described in Patent Document 1 has a structure in which a film of the regenerated cellulose layer 406 is formed in such a structure that a thin film is stretched between fibers constituting the substrate 405. It has become. For this reason, not only is it difficult to make the film thickness of the regenerated cellulose layer 406 uniform, but there is also a problem that a portion where the thin film of the regenerated cellulose layer 406 is not stretched occurs and a gap remains. Therefore, in the vegetable room provided with such a conventional moisture-sensitive moisture permeable membrane, when the vegetable room has a high humidity, the humidity is more than necessary due to a gap formed by the thin film of the regenerated cellulose layer 406 not being stretched. It is discharged outside the vegetable room. Furthermore, when the vegetable compartment is low in humidity, moisture that is desired to be kept in the vegetable compartment is discharged outside the vegetable compartment. As a result, the humidity in the vegetable room cannot be kept high, and there is a problem that it is difficult to store vegetables and the like in a fresh state for a long time.

JP 2014-800 A

The present invention has been made to solve such a conventional problem, and the present invention uses a base material in which an opening is provided in at least a part of a wall surface constituting a vegetable storage part of a vegetable case. A vegetable case in which a regenerated cellulose film formed without being provided in an opening and a refrigerator using the vegetable case are provided.

According to the present invention, unlike the case where the moisture-permeable and moisture-permeable membrane is formed using the substrate, the adjustment of the concentration of the viscose and the adjustment of the substrate material density for controlling the film thickness of the regenerated cellulose membrane There is no need to perform a special treatment, and a regenerated cellulose membrane that is easy to manufacture and has a low manufacturing cost can be formed.

In addition, since a regenerated cellulose film having a uniform film thickness and free of defects such as perforations can be formed, the moisture permeation amount of the regenerated cellulose film can be maintained even when the vegetable case is at high or low humidity. It can be controlled stably. Thereby, a vegetable case can be kept at high humidity for a long period of time, and the freshness of vegetables can also be maintained for a long period of time.

FIG. 1 is a cross-sectional view of a vegetable case in which a regenerated cellulose membrane according to Embodiment 1 of the present invention is arranged. FIG. 2 is a perspective view of the vegetable case according to Embodiment 1 of the present invention. FIG. 3 is a perspective view of the vegetable case according to Embodiment 1 of the present invention. FIG. 4 is a graph showing the moisture and moisture permeation rate of the regenerated cellulose membrane in Embodiment 1 of the present invention. FIG. 5 is a diagram showing a regenerated cellulose membrane unit in which the regenerated cellulose membrane in Embodiment 1 of the present invention is fixed to a fixed frame. FIG. 6 is a cross-sectional view showing a state in which the regenerated cellulose film and the nonwoven fabric in Embodiment 1 of the present invention are laminated and bonded with viscose. FIG. 7 is a cross-sectional view of a refrigerator provided with a vegetable case in which the regenerated cellulose membrane unit according to Embodiment 2 of the present invention is arranged. FIG. 8 is a graph showing the humidity fluctuation in the vegetable case in which the regenerated cellulose membrane unit according to Embodiment 2 of the present invention is arranged. FIG. 9 is a graph showing the humidity fluctuation in the vegetable case when the regenerated cellulose membrane unit according to Embodiment 2 of the present invention is not arranged. FIG. 10 is a graph showing the weight change (initial ratio) of each vegetable stored in the vegetable room for 7 days in Embodiment 2 of the present invention. FIG. 11 is a front view of the refrigerator according to Embodiment 3 of the present invention. FIG. 12: is a front view when the door of the refrigerator in Embodiment 3 of this invention is opened. 13 is a cross-sectional view taken along line 13-13 of FIG. 12, showing the refrigerator according to Embodiment 3 of the present invention. FIG. 14 is a cross-sectional view taken along line 14-14 of FIG. 12, showing the refrigerator according to Embodiment 3 of the present invention. FIG. 15 is a schematic cross-sectional view for explaining the cold air flow of the refrigerator in the third embodiment of the present invention. FIG. 16: is a schematic front view of the refrigerator for demonstrating the cold air flow of the refrigerator in Embodiment 3 of this invention. FIG. 17 is a perspective view of a part of the refrigerator for explaining the cold air flow in the rear part of the cooling chamber of the refrigerator in the third embodiment of the present invention. FIG. 18 is an enlarged cross-sectional view of a main part of the refrigerator in the third embodiment of the present invention. FIG. 19 is a schematic cross-sectional view of a part of the refrigerator for explaining the cold air flow of the refrigerator in the third embodiment of the present invention. FIG. 20 is an enlarged cross-sectional view of a main part of the refrigerator in the third embodiment of the present invention. FIG. 21 is a schematic cross-sectional view of a part of the refrigerator for explaining the cold air flow of the refrigerator in the third embodiment of the present invention. FIG. 22 is an enlarged front view showing the vegetable compartment and the freezer compartment of the refrigerator in the third embodiment of the present invention. FIG. 23 is a perspective view of a rear partition block constituting the back wall portion of the vegetable room of the refrigerator in the third embodiment of the present invention. FIG. 24 is an exploded perspective view showing a vegetable room and a vegetable case of the refrigerator in the third embodiment of the present invention. FIG. 25 is a perspective view of a vegetable case provided in the vegetable compartment of the refrigerator in the third embodiment of the present invention. FIG. 26 is an exploded perspective view of the vegetable case in the vegetable compartment of the refrigerator in the third embodiment of the present invention. FIG. 27 is a perspective view of a vegetable case in the vegetable compartment of the refrigerator according to Embodiment 3 of the present invention. FIG. 28 is an exploded perspective view of a partition plate used in the vegetable case of the refrigerator in Embodiment 3 of the present invention. FIG. 29A is a perspective view showing a state in which the partition plate used in the vegetable case of the refrigerator in Embodiment 3 of the present invention is attached to the lower container. FIG. 29B is a perspective view showing a state where the partition plate used in the vegetable case of the refrigerator in Embodiment 3 of the present invention is attached to the lower container. FIG. 30 is a sectional view of a partition plate used in the vegetable case of the refrigerator in the third embodiment of the present invention. FIG. 31 is a front sectional view of a vegetable case provided in a vegetable room of a refrigerator in Embodiment 3 of the present invention. FIG. 32 is a front sectional view showing a state where the upper container in the vegetable room of the refrigerator in the third embodiment of the present invention is supported. FIG. 33 is a partially enlarged view showing a state in which the upper container is placed in the lower container of the vegetable case provided in the vegetable compartment of the refrigerator in the third embodiment of the present invention. FIG. 34 is a control block diagram of the refrigerator in the third embodiment of the present invention. FIG. 35 is a schematic view of a conventional moisture-sensitive moisture permeable membrane.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same components as those in the conventional example or the actual form described above are denoted by the same reference numerals, and detailed description thereof is omitted.

(Embodiment 1)
FIG. 1 is a cross-sectional view of a vegetable case in which a regenerated cellulose membrane according to Embodiment 1 of the present invention is arranged. 2 and 3 are perspective views of the vegetable case according to Embodiment 1 of the present invention.

In FIG. 1, the opening part 3 is provided in at least one part in the inner surface of the vegetable case main body 2 which comprises the vegetable storage part of the vegetable case 1, Preferably the side surface which comprises a top | upper surface and a wall surface. The regenerated cellulose film 4 is held so as to cover the opening 3.

2 and 3, the vegetable case lid 5 is designed so that the vegetable case body 2 can be covered. As shown in FIG. 2, the opening 3 is provided in at least a part of the vegetable case lid 5, and the regenerated cellulose membrane 4 is held so as to cover the opening 3 provided in at least a part of the vegetable case lid 5. May be. As shown in FIG. 3, the opening 3 is provided on at least a part of the side surface of the vegetable case body 2 constituting the vegetable storage part of the vegetable case 1, and the regenerated cellulose membrane 4 is held so as to cover the opening 3. May be. Moreover, the vegetable case main body 2 which comprises a vegetable storage part is provided with the space where a vegetable etc. can be stored.

Next, the role of the regenerated cellulose membrane 4 will be described.

The main raw material of the regenerated cellulose membrane 4 is regenerated cellulose obtained as follows. That is, a viscose liquid is prepared by dissolving cellulose made of pulp made by pulverizing wood or the like with alkali such as sodium hydroxide and carbon disulfide. The viscose solution is passed through a slit, formed into a thin film like paper, neutralized with an acid such as sulfuric acid, and returned to cellulose to obtain a film-like regenerated cellulose. The regenerated cellulose film is also called cellophane paper.

Further, cellulose which is a raw material of the regenerated cellulose film 4 is known as a dietary fiber as another name. Since this dietary fiber is a substance that constitutes the cell wall of plants, it is always included in vegetables and fruits, and is a substance that is ingested together with vegetables and the like, and is also a very safe food. For this reason, since it is safe even if it is ingested directly, it is widely used as a food packaging material such as a food package for industrial use. Furthermore, since the raw pulp is an inexpensive material, the processed regenerated cellulose membrane is also inexpensive, so that it is also used in large quantities for the purpose of individually packaging cheap candy and ramune among foods. Therefore, it is used as a packaging material that is generalized and consumed in large quantities today, and is mass-produced and consumed in large quantities.

An inexpensive regenerated cellulose membrane having high safety and high versatility has another property that humidity permeation changes depending on humidity. Hereinafter, the mechanism of moisture transmission of the regenerated cellulose will be briefly described.

As described above, the raw material pulp is a cellulose material. This cellulose is expressed by a carbohydrate (molecular formula (C ₆ H ₁₀ O ₅ ) n) represented by (Chemical Formula 1) of a crystal structure contained in a natural plant cell wall. And has a parallel chain structure in which the orientations of the reducing ends are all the same in the crystal. This equilibrium chain structure exists as fine fibers and is called microfibril (an aggregate unit of filamentous cellulose molecules). In the case of cellulose in a microfibril state, when hydrogen bonds are generated between cellulose molecules and long polymers are assembled in an orderly manner, the cellulose becomes a strong hydrogen bond aggregate (crystal region). Therefore, moisture cannot enter between molecules (it is difficult to enter), and the same crystal structure is maintained regardless of humidity, so moisture passes regardless of whether the humidity is high or low. It is hard to be done.

However, the regenerated cellulose that is the main component of the regenerated cellulose membrane of the present invention is a cellulose regenerated using viscose as a raw material, and is a carbohydrate (polysaccharide) represented by (C ₆ H ₁₀ O ₅ ) n. . When this regenerated cellulose is expressed by a molecular formula, it is expressed as (C ₆ H ₁₀ O ₅ ) n, which is the same as cellulose. However, while cellulose uses natural materials as they are, regenerated cellulose is obtained by treating cellulose with sodium hydroxide and then adding carbon disulfide to viscose (sodium cellulose xanthate). ) Is acid-treated, and is regenerated to a cellulose state, that is, regenerated cellulose. The regenerated cellulose thus obtained has an antiparallel chain structure, that is, an amorphous structure, in which the crystal structure that is characteristic of cellulose is broken and the orientation of the non-reducing ends of adjacent molecular chains is different.

Due to the non-crystalline properties of the regenerated cellulose, the cellulose molecules are hydrogen bonded to each other at low humidity, that is, in a dry state, and moisture in the air hardly enters between the cellulose molecules. On the other hand, when the humidity is high, that is, when there is a lot of moisture in the air, the cellulose molecules in the regenerated cellulose hydrogen bond with the moisture in the air, so the hydrogen bonds between the cellulose molecules are broken and the spacing between the cellulose molecules is increased. It becomes wider and moisture is likely to enter between molecules. As a result, components containing moisture (humidity) in the air can move so that the interval between cellulose molecules passes through from the high humidity side to the low humidity side, and the amount of moisture movement increases. Due to such characteristics, the regenerated cellulose has a characteristic that the amount of humidity that passes through the regenerated cellulose, that is, the moisture permeation amount increases as the humidity increases, that is, the humidity sensitivity.

Due to the properties of regenerated cellulose as described above, the regenerated cellulose membrane 4 in which regenerated cellulose is processed into a film has a characteristic that the moisture permeability increases as the humidity increases.

However, the feature of the regenerated cellulose membrane in terms of moisture permeability has been conventionally treated as a defect. That is, as described above, when the humidity is high, the interval between the cellulose molecules is widened, but the regenerated cellulose film is stretched even when viewed as a whole of the regenerated cellulose film. If the regenerated cellulose film is used for wallpaper or shoji paper, etc., it is peeled off the wall by extending the regenerated cellulose film if it is high in the humidity, and if it is shoji, wrinkles are formed between the lattices. Will occur. For this reason, conventionally, there are hardly any applications in which the characteristics of moisture permeability of the regenerated cellulose membrane are utilized.

FIG. 4 is a graph showing the moisture permeation rate of the regenerated cellulose membrane 4. The moisture permeation performance of the regenerated cellulose membrane 4 will be described with reference to FIG. However, moisture permeation performance is expressed as moisture permeation. The humidity permeation amount is an amount defined as the amount of moisture that passes through the regenerated cellulose membrane 4 per unit area per unit time. For comparison, the humidity permeation amount of general paper having no moisture permeation effect is also shown.

As can be seen from FIG. 4, in the general paper having no moisture permeability, the amount of moisture permeation increases as the relative humidity increases, but the increase in both increases at the same rate. In other words, if the relative humidity is doubled, the humidity transmission amount is also doubled. However, the humidity permeation amount of the regenerated cellulose membrane 4 increases as the relative humidity increases, but the humidity permeation amount at low humidity is kept very low compared to ordinary paper. . On the other hand, when it is in a high humidity state, the moisture permeation performance is slightly inferior to that of ordinary paper, but a high amount of moisture permeation is obtained. For example, when the density of the regenerated cellulose film 4 is 30 g / m ² , when the relative humidity is about 50% RH, the humidity transmission amount is about 10% of the humidity transmission amount of general paper. The humidity transmission amount at high humidity is about 80% of the humidity transmission amount of general paper. This behavior is attributed to the fact that the cellulose molecular structure of the regenerated cellulose described at the beginning of the present embodiment is an amorphous structure. In a low humidity state, moisture in the air is present between the cellulose molecules in the amorphous structure. This is because when the moisture in the air enters between the cellulose molecules in a high humidity state, the intermolecular molecules expand and the water is easily transmitted.

Furthermore, by setting the density of the regenerated cellulose film 4 to 20 to 50 g / m ² , the moisture permeability in the high humidity region (relative humidity 95% RH) is reduced to the moisture permeability in the low humidity region (relative humidity 50% RH). Thus, a regenerated cellulose membrane 4 that is 4 to 12 times larger than the above can be obtained.

FIG. 5 shows a regenerated cellulose membrane unit 8 in which the regenerated cellulose membrane 4 in the present embodiment is fixed to a fixed frame 6. The periphery of the regenerated cellulose film 4 is fixed by a fixed frame 6 in order to facilitate the carrying of the regenerated cellulose film 4 or to improve the mounting operability of the regenerated cellulose film 4 during production. The fixed frame 6 that fixes the regenerated cellulose film 4 has needle-like ribs around the frame, and the regenerated cellulose film 4 is fixed by passing the rib of the fixed frame 6 through the regenerated cellulose film 4. Yes.

As another means for fixing the regenerated cellulose film 4 to the fixed frame 6, there is insert molding. In the insert molding, the regenerated cellulose film 4 can be fixed to the fixed frame 6 without gaps at the same time as the molding. In the case of insert molding, since the air in the vegetable case 1 always passes through the regenerated cellulose membrane 4, it is desirable from the viewpoint that moisture permeability can be obtained with certainty.

Furthermore, the fixed frame 6 to which the regenerated cellulose film 4 is fixed has no gap in the opening 3 formed in the vegetable case lid 5 provided in the vegetable case 1 or the opening 3 provided in the vegetable case main body 2. It can be attached. In addition, the vegetable case lid 5 is configured such that a sealed structure is formed by the vegetable case lid 5 and the vegetable case body 2 in order to sufficiently bring out the moisture-sensitive moisture permeability of the regenerated cellulose membrane 4. Is desirable. If it is impossible to form a sealed structure between the vegetable case lid 5 and the vegetable case body 2, the gap between the vegetable case lid 5 and the vegetable case body 2 is made as small as possible. The configuration is desirable from the viewpoint that the performance of the regenerated cellulose film 4 can be utilized.

Moreover, when fixing the regenerated cellulose membrane 4 to the vegetable case main body 2, the regenerated cellulose membrane unit 8 which has the regenerated cellulose membrane 4 is attached to at least a part of at least one surface of the inner surface of the vegetable case main body 2 constituting the vegetable storage unit. Even when they are arranged, the same effect can be obtained. In addition, at least 1 surface of the inner surface of the vegetable case main body 2 which comprises the vegetable storage part as used in this Embodiment is the top surface of the vegetable case main body 2, the side surface which comprises a wall surface, and at least 1 surface among bottom surfaces. pointing.

Moreover, it is desirable that the vegetable case body 2 is made of a polymer material such as PP, PS, and ABS from the viewpoint that it can be manufactured at low cost. It is also effective to incorporate an antibacterial agent into these polymer materials for the purpose of preserving vegetables and the like more hygienically.

On the other hand, the vegetable case main body 2 absorbs heat from the outside, and the temperature inside the vegetable case main body 2 quickly reaches the same temperature as the external temperature, thereby preventing condensation due to a temperature difference. For this purpose, it is desirable to use a metallic material having a high heat transfer coefficient such as stainless steel and aluminum. Moreover, since these metal materials have antibacterial performance, they are desirable from the viewpoint that vegetables and the like can be stored more hygienically.

Furthermore, the regenerated cellulose membrane 4 of the present embodiment may contain a fungicide.

As a method for blending the antifungal agent, a method in which the antifungal agent is mixed in advance with the viscose when the regenerated cellulose membrane 4 is produced is desirable. According to this method, it is not necessary to use an antifungal binder or the like on the finally formed regenerated cellulose film 4, and the regenerated cellulose film can be formed in a state in which the antifungal agent is contained. It can be avoided that the moisture and moisture permeation performance is impaired by mixing.

As an antifungal agent, for the purpose of selecting a material that does not deteriorate due to the strong alkali of viscose and hardly dissolves in water, inorganic materials such as Ni and zinc mixed with silver, copper, Ni, trace amounts of Co and Cu, etc. There are systems and organic fungicides such as TBZ, triazine, isoplatiolane, iprodione and siabendazole. Among them, it is desirable to use TBZ that is widely used as a food additive, is inexpensive, and has an antifungal effect over a long period of time.

In addition, as another method of blending the mold preventive agent, there is a method of coating a part of the surface of the regenerated cellulose film 4 with a paint blended with a mold preventive component. When the coating area of the paint containing the anti-mold component is about 25% or less of the entire surface of the regenerated cellulose film 4, the moisture permeability of the regenerated cellulose film 4 is hardly impaired. The coating area of the paint is desirably about 25% or less of the entire surface of the regenerated cellulose film 4.

In addition, as the antifungal agent, since the antifungal agent is coated on a part of the regenerated cellulose film 4, the antifungal agent has a halo effect (an effect that the antifungal effect extends to the periphery of the antifungal component) as an antifungal property. In order to select the agent, inorganic systems such as Ni and zinc mixed with silver, copper, Ni, trace amounts of Co and Cu, and organic fungicides such as TBZ, triazine, isoprathiolane, iprodione and cyabendazole An agent is used. Among them, it is desirable to use TBZ that is widely used as a food additive, is inexpensive, and has an antifungal effect over a long period of time. In addition, it is desirable to select an inorganic antibacterial agent for the purpose of selecting an antifungal agent that has an antifungal effect even if the amount to be coated is extremely small and is not easily affected by the external environment. Among these, it is desirable to select Ni and Ni mixed with a small amount of Co and Cu.

FIG. 6 is a cross-sectional view in which the regenerated cellulose film 4 and the nonwoven fabric 9 in the present embodiment are laminated and bonded with viscose.

In the present embodiment, the nonwoven fabric 9 having a stronger shear strength than the regenerated cellulose film 4 is laminated on at least one of the front and back surfaces of the regenerated cellulose film 4. Further, the regenerated cellulose film 4 and the nonwoven fabric 9 are bonded by a viscose layer 10 that is an adhesive layer. The viscose layer 10 is made of the same raw material viscose as the regenerated cellulose film 4, and the main component is regenerated cellulose.

The viscose layer 10 is formed by coating or dipping viscose on the regenerated cellulose film 4 or the nonwoven fabric 9, and then solidifying the viscose coated or dipped by acid treatment to form the regenerated cellulose film 4 or the nonwoven fabric 9. Regenerated cellulose retained. The coating is to apply viscose on the surface of the regenerated cellulose film 4 or the nonwoven fabric 9, and the dipping is to immerse the viscose in the regenerated cellulose film 4 or the nonwoven fabric 9. In the present embodiment, as a method for adhering the regenerated cellulose film 4 and the nonwoven fabric 9, dipping for reliable adhesion is preferable.

Further, preferably, the regenerated cellulose film 4 and the non-woven fabric 9 are coated with or dipped on the regenerated cellulose film 4 or the non-woven fabric 9 and then the regenerated cellulose film 4 is impregnated with the viscose. Alternatively, pressure is applied to the nonwoven fabric 9 from above and below with a mechanical roll press.

Further, preferably, after the regenerated cellulose membrane 4 or the nonwoven fabric 9 is impregnated with viscose, as a means for adhering the regenerated cellulose membrane 4 and the nonwoven fabric 9, acid treatment with a sulfuric acid solution is performed in the state of a synthetic polymer. A method in which the viscose is regenerated and the regenerated cellulose film 4 and the nonwoven fabric 9 are bonded is used. This bonding method is desirable from the viewpoint of increasing the bonding strength between the regenerated cellulose film 4 and the nonwoven fabric 9.

The operation of the regenerated cellulose membrane 4 of the present embodiment configured as described above and the vegetable case 1 in which the regenerated cellulose membrane 4 is arranged will be described below.

First, vegetables to be stored are placed in the vegetable case main body 2, and the vegetable case main body 2 is sealed with the vegetable case lid 5. Here, when the regenerated cellulose membrane 4 is not installed on the vegetable case lid 5 or the like, the humidity inside the vegetable case 1 exceeds 100% due to moisture evaporated from the vegetables or the like stored in the vegetable case body 2. The moisture in excess of 100% causes the inside of the vegetable case 1 to condense, and the condensed water causes the problem of causing water rot of vegetables and the like held in the vegetable case 1.

On the other hand, in the vegetable case 1 of the present embodiment, a regenerated cellulose film 4 is disposed on at least a part of the vegetable case lid 5. Alternatively, the regenerated cellulose film 4 is disposed on a part of at least one of the inner surfaces of the vegetable case body 2. With such a configuration, moisture evaporating from the vegetables or the like stored in the vegetable case 1 passes through the regenerated cellulose membrane 4 and is discharged to the outside of the vegetable case 1, so that the humidity inside the vegetable case 1 is 100 % Is not exceeded. For this reason, the vegetables etc. preserve | saved in the vegetable case main body 2 of the vegetable case 1 can be preserve | saved in a high-humidity state, without producing water rot, and preserve | saved in the state which maintained freshness for a long period of time. Can be done.

In the present embodiment, when the amount of vegetables stored in the vegetable case main body 2 is small and the amount of water evaporated from the vegetables etc. is small, the regenerated cellulose membrane 4 has a function of regenerated cellulose. The amount of moisture transmitted is reduced, and the amount of moisture released from the vegetable case body 2 to the outside is reduced. As a result, since the humidity inside the vegetable case 1 is maintained, it is possible to preserve the vegetables and the like while maintaining the freshness of the vegetables and the like for a long time.

As described above, even when humidity fluctuation occurs inside the vegetable case 1 due to moisture generated from the vegetables stored in the vegetable case body 2, the regenerated cellulose membrane 4 works to reduce the humidity inside the vegetable case 1. The moisture permeability is automatically adjusted according to the degree. Thereby, dew condensation can be prevented while the high humidity in the vegetable case 1 is maintained.

In addition, the regenerated cellulose membrane 4 arrange | positioned in the vegetable case 1 is not restricted to 1 sheet | seat, A plurality may be arrange | positioned. By arranging a plurality of sheets, it is possible to easily control the moisture permeability at a low cost.

As described above, the vegetable case 1 of the present embodiment has the opening 3 on at least a part of at least one of the inner surfaces constituting the vegetable storage portion, preferably the top surface and the side surfaces constituting the wall surface, A regenerated cellulose film 4 formed without using a substrate is provided in the opening 3. Unlike the case where the regenerated cellulose film 4 of the present embodiment is formed using a substrate, there is no need to perform special treatment such as adjustment of the concentration of viscose and adjustment of the density of the substrate material. The regenerated cellulose film 4 is formed by processing viscose, which is a raw material, by being extruded through a slit provided with a certain gap. The regenerated cellulose membrane 4 formed in this way can be used for humidity control as a moisture permeable and moisture permeable membrane. In addition, the regenerated cellulose film 4 of the present embodiment is formed of a regenerated cellulose film having a uniform film thickness and avoiding defects such as perforations, so that the reliability is high, the cost is low, and the humidity is low. The amount of humidity permeation can be controlled stably. Therefore, the inside of the vegetable case 1 can be kept at high humidity for a long period of time, and the freshness of the vegetables and the like can also be maintained for a long period of time.

The regenerated cellulose membrane 4 of the present embodiment preferably has a density of 20 to 40 g / m ² . The regenerated cellulose membrane 4 of this density has a moisture permeability in the high humidity region (humidity 95% RH) of about 4 to 12 times that in the low humidity region (humidity 50% RH). Can be kept at high humidity.

In this embodiment, a nonwoven fabric 9 having a shearing force stronger than that of the regenerated cellulose film 4 is laminated on at least one of the front and back surfaces of the regenerated cellulose film 4. With such a configuration, even when a vegetable or the like put in the vegetable case 1 hits the regenerated cellulose film 4, the regenerated cellulose film 4 is not easily broken, and the reliability of the regenerated cellulose film 4 can be improved. it can.

The regenerated cellulose film 4 and the non-woven fabric 9 are obtained by adhering each other by coating or dipping the regenerated cellulose film 4 or the non-woven fabric 9 with viscose and solidifying the viscose coated or dipped by acid treatment. . The regenerated cellulose membrane 4 and the nonwoven fabric 9 can be bonded and fixed by a simple method such as acid treatment of viscose. Unlike means for bonding by using a binder (adhesive) or the like, a binder (adhesive) is used. It becomes unnecessary. For this reason, the regenerated cellulose film 4 and the nonwoven fabric 9 can be easily integrated without impeding the moisture permeation effect by the binder (adhesive), and the handleability at the time of manufacture can be improved.

(Embodiment 2)
FIG. 7 is a cross-sectional view of refrigerator 100 having vegetable case 1 in which regenerated cellulose membrane unit 8 according to Embodiment 2 of the present invention is arranged.

In FIG. 7, the heat insulating box body 101 which is the main body of the refrigerator 100 includes an outer box 102 mainly made of steel plate, an inner box 103 molded of a resin such as ABS, an outer box 102 and an inner box 103. And a foamed heat insulating material such as hard foamed urethane filled in the space between them. The heat insulation box 101 is insulated from the surroundings, and is thermally insulated into a plurality of storage rooms by partition walls. In the uppermost part of the heat insulating box 101, a refrigeration room 104 as a first storage room, a switching room 105 as a fourth storage room and an ice making room 106 as a fifth storage room are arranged side by side below the refrigeration room 104. Is provided. A freezing room 107 as a second storage room is arranged at the lower part of the switching room 105 and the ice making room 106, and a vegetable room 108 as a third storage room is arranged at the lowermost part of the heat insulating box 101. Has been.

The refrigerated room 104 is set in a refrigerated temperature zone that is a temperature that does not freeze for refrigerated storage, and is usually set to 1 ° C. to 5 ° C. The vegetable room 108 is set to a refrigeration temperature range equivalent to the refrigeration room 104 or a temperature slightly higher than the refrigeration room 104, for example, a vegetable temperature range 2 ° C. to 7 ° C. The freezer compartment 107 is set in a freezing temperature zone, and specifically, it is normally set at −22 ° C. to −15 ° C. for frozen storage. In order to improve the frozen storage state, it may be set at a low temperature such as −30 ° C. or −25 ° C., for example. The vegetable compartment 108 may be provided with a drawer-type door.

The vegetable compartment 108 has a vegetable case 1, and the vegetable case 1 is provided with a vegetable case lid 5 provided with a regenerated cellulose membrane unit 8.

Furthermore, in this embodiment, the regenerated cellulose membrane unit 8 is designed so that it can be attached to the vegetable case lid 5 without a gap. The regenerated cellulose membrane unit 8 may be attached to a part of the vegetable case lid 5. The vegetable case lid 5 and the vegetable case body 2 form a sealed structure in the vegetable case 1. With such a configuration, the moisture-permeable and moisture-permeable performance of the regenerated cellulose film 4 is sufficiently drawn out. Therefore, it is desirable that a sealed structure is formed in the vegetable case 1 by the vegetable case lid 5 and the vegetable case body 2. If it is impossible to form a sealed structure between the vegetable case lid 5 and the vegetable case body 2, the gap between the vegetable case lid 5 and the vegetable case body 2 should be as small as possible. However, it is desirable from the viewpoint that the performance of the regenerated cellulose film 4 is utilized more effectively.

Note that the vegetable case 1 of the present embodiment has the vegetable case lid 5 provided with the regenerated cellulose membrane 4, but the vegetable case lid 5 is not necessarily formed, and the regenerated cellulose membrane 4 does not have to be formed. The same effect can also be obtained by disposing at least one of the inner surfaces of the vegetable case body 2 of the vegetable case 1. Here, at least one surface refers to at least one of the inner surface of the vegetable case body 2, that is, the top surface, the side surface constituting the wall surface, and the bottom surface. Further, the regenerated cellulose film 4 does not necessarily have to be provided on the entire area of one of these surfaces, and may be provided on a part of these surfaces.

In addition, it is desirable that the regenerated cellulose membrane unit 8 is disposed at a high temperature position in the vegetable case 1. The reason for this is that if the relative humidity is the same in the air, the higher the temperature, the greater the absolute amount of moisture in the air. Because they gather. By attaching the regenerated cellulose membrane unit 8 to a place with a high temperature in the vegetable case 1, it becomes easy to discharge excess moisture to the outside of the vegetable case 1, and condensation can be efficiently suppressed.

Furthermore, since the regenerated cellulose membrane unit 8 becomes a temperature higher than the temperature in the vegetable case 1 by arrange | positioning the regenerated cellulose membrane unit 8 in the position where the temperature in the vegetable case 1 is high, to the regenerated cellulose membrane 4 itself. Condensation can be suppressed. If the regenerated cellulose membrane 4 is placed at a low temperature in the vegetable case and condensation occurs in the regenerated cellulose membrane 4 itself, the regenerated cellulose membrane 4 becomes wet due to condensation, and the above-mentioned regenerated cellulose membrane Due to the function of moisture permeability, the distance between cellulose molecules is kept wide. In this case, even if the humidity in the vegetable case 1 is lowered, the permeation amount remains high, so that a problem arises that the moisture that is desired to be confined in the vegetable case 1 is discharged. In order to avoid such condensation on the regenerated cellulose membrane 4, it is desirable that the regenerated cellulose membrane unit 8 be installed in a high temperature zone in the vegetable case 1.

Here, the position where the temperature in the vegetable case 1 is high will be described. In general, since air has a property of being lighter at a higher temperature, the temperature of the air in the vegetable case 1 of the vegetable compartment 108 is higher at the upper part than at the lower part. For this reason, in this Embodiment, the regenerated cellulose membrane unit 8 is formed in the vegetable case lid 5 arrange | positioned at the upper part of the vegetable case 1 of the vegetable compartment 108. FIG. In addition, the position where the regenerated cellulose membrane unit 8 is formed is not limited to the vegetable case lid 5 but may be the top of the vegetable case 1 or the upper part of the side surface constituting the wall surface.

The temperature of the switching chamber 105 can be switched to a preset temperature zone between the refrigeration temperature zone and the freezing temperature zone in addition to the refrigeration temperature zone, vegetable temperature zone, and freezing temperature zone. The switching chamber 105 is a storage chamber having an independent door arranged in parallel with the ice making chamber 106. The switching chamber 105 may have a drawer type door.

In the present embodiment, the switching chamber 105 is configured as a storage chamber including a temperature range of refrigeration and freezing. However, the refrigeration is performed in the refrigeration chamber 104 and the vegetable chamber 108, and the refrigeration is performed in the freezing chamber 107. In other words, it may be a storage room specialized for switching only in the intermediate temperature range between refrigeration and freezing. The switching chamber 105 may be a storage chamber fixed in a specific temperature range.

In the ice making chamber 106, ice is made by the automatic ice maker provided in the upper part of the ice making chamber 106 with water sent from the water storage tank in the refrigerator compartment 104, and the produced ice is placed in the lower part of the ice making chamber 106. Stored in an ice storage container.

The top surface portion of the heat insulating box 101 has a stepped recess shape toward the back of the refrigerator 100, and a machine room 101a is formed in the stepped recess. The machine room 101a accommodates the compressor 109 and high-pressure side components of the refrigeration cycle such as a dryer for removing moisture. That is, the machine room 101 a in which the compressor 109 is disposed is formed in a shape that bites into the upper rear region in the refrigerator compartment 104.

Thus, the conventional refrigerator is provided with a configuration in which the machine room 101a is provided and the compressor 109 is disposed in the rear area of the upper storage room of the heat insulating box 101 that is difficult to reach and is a dead space. Thus, the space in the machine room provided in the lower part of the heat insulating box 101 that is easy for the user to use can be used effectively as the storage room capacity. Thereby, the storage property and usability of the refrigerator 100 can be greatly improved.

Next, the refrigeration cycle will be described.

The refrigeration cycle is formed of a series of refrigerant flow paths in which a compressor 109, a condenser, a capillary as a decompressor, and a cooler 112 are arranged in order. As the refrigerant, for example, isobutane, which is a hydrocarbon-based refrigerant, is enclosed.

The compressor 109 is a reciprocating compressor that compresses refrigerant by reciprocating a piston in a cylinder. In the case of a refrigeration cycle in which a three-way valve and a switching valve are used for the heat insulating box 101, those functional parts may be disposed in the machine room 101a.

In this embodiment, a capillary is used for the decompressor constituting the refrigeration cycle. However, an electronic expansion valve that is driven by a pulse motor and can freely control the flow rate of the refrigerant may be used.

Note that the items described below may be applied to a refrigerator of a type in which the compressor 109 is disposed in a machine room provided in a rear region of the storage chamber below the heat insulating box 101, which is generally used in the past. .

A cooling chamber 110 that generates cold air is provided on the back of the freezing chamber 107, and the cooling chamber 110 is partitioned from the air path. Between the freezing chamber 107 and the cooling chamber 110, there are provided an air passage that conveys cold air to each chamber having heat insulation properties, and a rear partition wall 111 configured to thermally separate each storage chamber. Yes. In addition, a partition plate is provided for isolating the freezing room cold air passage from the cooling room 110. In the cooling chamber 110, a cooler 112 is disposed, and in the upper space of the cooler 112, the cold air cooled by the cooler 112 is stored in the refrigerating chamber 104, the switching chamber 105, the ice making chamber by a forced convection method. 106, the cooling fan 113 which ventilates to the vegetable compartment 108 and the freezer compartment 107 is arrange | positioned. The vegetable room cold air inlet portion 113 a is a portion where the cold air cooled by the cooler 112 flows into the vegetable room 108 by the cooling fan 113.

Here, it is desirable that the regenerated cellulose membrane unit 8 is provided at a position where the cold air flowing from the vegetable room cold air inlet 113a is not directly applied as much as possible in order to cool the vegetable room 108. This is to prevent the temperature of the regenerated cellulose film 4 from being lowered due to the cool air flowing into the vegetable room 108 from the vegetable room cold air inlet 113a hitting the regenerated cellulose film 4. The reason why it is necessary to suppress the temperature of the regenerated cellulose film 4 from being lowered is that when the temperature of the regenerated cellulose film 4 becomes low and condensation occurs, the moisture permeability of the regenerated cellulose film 4 is always high. Even when the humidity in the vegetable case 1 is lowered, the moisture permeation amount of the regenerated cellulose membrane 4 is kept high, and the drying of the vegetable case 1 proceeds to prevent this.

Further, in the lower space of the cooler 112, a radiant heater 114 made of a glass tube is provided for defrosting the frost and ice adhering to and around the cooler 112 during cooling. Further, a drain pan 115 for receiving defrost water generated during defrosting and a drain tube 116 penetrating from the deepest part of the drain pan 115 to the outside of the chamber are provided at the lower portion thereof, and an evaporating dish 117 is disposed outside the chamber on the downstream side. Is provided.

The second partition wall 125 separates the freezer compartment 107 and the vegetable compartment 108, and is formed of a heat insulating material made of foamed polystyrene or the like in order to ensure the heat insulation of each storage room.

The operation of the refrigerator 100, the vegetable case 1 and the regenerated cellulose membrane unit 8 of the present embodiment configured as described above will be described below.

First, the operation of the refrigeration cycle of the refrigerator 100 will be described.

The refrigeration cycle is started and the cooling operation is performed by a signal from the control board according to the set temperature in the refrigerator 100. The high-temperature and high-pressure refrigerant discharged by the operation of the compressor 109 is condensed and liquefied to some extent by the condenser, and is further disposed on the side surface and back surface of the heat insulating box body 101 which is the main body of the refrigerator 100 and the front opening of the heat insulating box body 101. It is condensed and liquefied while preventing condensation of the heat insulating box 101 via the refrigerant pipe and the like, and sent to the capillary tube. Thereafter, the refrigerant is decompressed in the capillary tube while exchanging heat with the suction pipe to the compressor 109, and is sent to the cooler 112 as a low-temperature and low-pressure liquid refrigerant.

Here, the low-temperature and low-pressure liquid refrigerant is heat-exchanged with the air conveyed through the freezer compartment cold air passage and the like into each storage chamber by the operation of the cooling fan 113, and the refrigerant in the cooler 112 is evaporated. . At this time, cool air for cooling each storage chamber is generated in the cooling chamber 110. The low-temperature cold air is diverted from the cooling fan 113 to the refrigerating room 104, the switching room 105, the ice making room 106, the vegetable room 108, and the freezing room 107 using an air passage and a damper. Thereby, each chamber is cooled to each target temperature zone. In particular, the temperature of the vegetable compartment 108 is adjusted to 2 ° C. to 7 ° C. by distribution of cold air by opening and closing dampers in the air passage to which cold air is supplied, and ON / OFF operation of the heater.

Next, the case where vegetables etc. are thrown into the vegetable compartment 108 and preserve | saved is demonstrated.

First, the vegetable case body 2 disposed in the vegetable compartment 108 is pulled out by pulling the door of the drawer-type vegetable compartment 108 forward. At this time, the vegetable case lid 5 is left on the main body side of the refrigerator 100 without being pulled out together with the vegetable case main body 2 by a rib or the like standing in the vegetable compartment 108. For this reason, when the vegetable case 1 is pulled out, there is no vegetable case lid 5 at the top of the vegetable case 1, so that the stored vegetables can be easily put into the vegetable case body 2.

Furthermore, after vegetables etc. are thrown into the vegetable case main body 2 arranged in the vegetable compartment 108, when the door of the vegetable compartment 108 is closed, the vegetable case lid 5 left on the main body side of the refrigerator 100 causes the vegetable case The vegetable case lid 5 and the vegetable case main body 2 are configured so that the main body 2 can be automatically sealed in a sealed state. With such a configuration, the vegetable case main body 2 and the vegetable case lid 5 can be sealed when the door of the vegetable compartment 108 is closed. Thereby, when the moisture in the vegetable case 1 is high due to the action of the regenerated cellulose membrane 4 of the regenerated cellulose membrane unit 8 provided in the vegetable case lid 5, the moisture evaporated from the vegetables stored in the vegetable case 1 Is released to the outside of the vegetable case 1. On the other hand, when the humidity in the vegetable case 1 is low, the moisture permeability of the regenerated cellulose film 4 is reduced by the action of the regenerated cellulose film 4, and the vegetable case 1 The inside humidity is maintained.

FIG. 8 shows the results of measuring the humidity in the vegetable case 1 provided with the regenerated cellulose membrane unit 8. FIG. 9 is a graph showing the humidity fluctuation in the vegetable case 1 when the regenerated cellulose membrane unit 8 in the second embodiment is not arranged. FIG. 10 is a graph showing the weight change of each vegetable stored in the vegetable room 108 for 7 days.

Comparing FIG. 8 and FIG. 9, the vegetable case 1 in which the regenerated cellulose membrane unit 8 is not arranged corresponds to the behavior of the cold air flowing into the vegetable compartment 108 in order to cool the vegetable compartment 108 by the refrigeration cycle. Thus, when cold air flows in, the humidity decreases, and when cold air does not flow, the humidity increases. On the other hand, in the vegetable case 1 in which the regenerated cellulose membrane unit 8 is arranged as shown in FIG. 8, although the vegetable is put on the 0th day, it shows a high humidity of 100% due to the moisture that evaporates from the vegetable. Due to the action of the cellulose membrane 4, the moisture in the vegetable case 1 is discharged out of the vegetable case 1 and the humidity is lowered. However, although the humidity in the vegetable case 1 once decreases, the moisture permeability of the regenerated cellulose membrane 4 changes and the humidity permeation amount decreases, so the humidity in the vegetable case 1 does not decrease to about 90% or less. . For this reason, the vegetables etc. preserve | saved in the vegetable case 1 are preserve | saved in the vegetable case 1 kept at high humidity, and can be preserve | saved for a long time, without losing a water | moisture content. On the other hand, when the humidity in the vegetable case 1 becomes high, the regenerated cellulose membrane 4 does not maintain 100% humidity in the vegetable case 1 for a long time. For this reason, dew condensation does not occur in the vegetable case 1.

Thus, by using the refrigeration cycle system of the refrigerator 100, vegetables and the like can be stored at a low temperature, so that the freshness of the vegetables and the like can be maintained for a long time.

As described above, the action of the regenerated cellulose membrane 4 of the regenerated cellulose membrane unit 8 keeps the vegetable case body 2 in a high humidity state that is optimal for the preservation of vegetables and the like without causing condensation in the vegetable case body 2. be able to. Therefore, the freshness of vegetables etc. can be maintained for a long time.

The regenerated cellulose film 4 used in the regenerated cellulose film unit 8 of the present embodiment is a regenerated cellulose film 4 formed without using a base material. The regenerated cellulose film 4 of the present embodiment does not require any special treatment such as adjustment of the concentration of viscose and adjustment of the density of the base material, which are necessary when forming using a base material. A regenerated cellulose membrane is used, in which viscose is extruded and processed through a slit provided with a certain gap. The regenerated cellulose membrane 4 of the present embodiment can be used for humidity control in the vegetable case 1 as a moisture permeable and moisture permeable membrane. That is, the regenerated cellulose film 4 of the present embodiment uses a regenerated cellulose film that has a uniform film thickness and avoids defects such as perforations, so that it has high reliability, low cost, and low The amount of moisture transmission at the time of humidity can also be controlled stably. Thereby, the inside of the vegetable case 1 can be maintained at high humidity for a long period of time, and the freshness of vegetables and the like can also be maintained for a long period of time.

(Embodiment 3)
FIG. 11 is a front view of refrigerator 300 in the third embodiment of the present invention, and FIG. 12 is a front view when the door of refrigerator 300 in the third embodiment is opened. 13 is a cross-sectional view taken along line 13-13 of FIG. 12 showing the refrigerator 300 according to the third embodiment, and FIG. 14 is a cross-sectional view taken along line 14-14 of FIG. 12 showing the refrigerator 300 according to the third embodiment. FIG. 15 is a schematic cross-sectional view for explaining the cold air flow of refrigerator 300 in the third embodiment. FIG. 16 is a schematic front view for explaining the cold air flow of refrigerator 300 in the third embodiment, and FIG. 17 is a perspective view for explaining the cold air flow in the rear portion of the cooling chamber of refrigerator 300 in the third embodiment. FIG. 18 is an enlarged cross-sectional view of a main part of refrigerator 300 in the third embodiment, and FIG. 19 is a schematic cross-sectional view for explaining a cold air flow of refrigerator 300 in the third embodiment. FIG. 20 is an enlarged cross-sectional view of a main part of the refrigerator 300 in the third embodiment, and FIG. 21 is a schematic cross-sectional view for explaining the cold air flow of the refrigerator 300 in the third embodiment. FIG. 22 is an enlarged front view showing the vegetable compartment and the freezer compartment of refrigerator 300 in the third embodiment, and FIG. 23 is a rear partition plate constituting the rear wall portion of the vegetable compartment of refrigerator 300 in the third embodiment. It is a perspective view of a block. FIG. 24 is an exploded perspective view showing a vegetable room and a vegetable case of refrigerator 300 in the third embodiment. FIG. 25 is a perspective view of a vegetable case provided in the vegetable room of refrigerator 300 in the third embodiment. FIG. 26 is an exploded perspective view of the vegetable case of the vegetable compartment of the refrigerator 300 in Embodiment 3, FIG. 27 is a perspective view of the vegetable case of the vegetable compartment of the refrigerator 300 in Embodiment 3, and FIG. It is a disassembled perspective view of the partition plate used for the vegetable case of the refrigerator 300 in the form 3. FIGS. 29A and 29B are perspective views showing a state in which the partition plate used in the vegetable case of refrigerator 300 in Embodiment 3 is attached to the lower container. FIG. 30 is a cross-sectional view of the partition plate used in the vegetable case of refrigerator 300 in the third embodiment. FIG. 31 is a front cross-sectional view of a vegetable case provided in the vegetable compartment of refrigerator 300 in the third embodiment, and FIG. 32 is a front view showing the support structure of the upper container in the vegetable compartment of refrigerator 300 in the third embodiment. It is sectional drawing. FIG. 33 is a partially enlarged view showing a state where the upper container is placed on the lower container of the vegetable case provided in the vegetable compartment of refrigerator 300 in the third embodiment, and FIG. 34 shows the refrigerator in the third embodiment. 3 is a control block diagram of 300. FIG.

First, the overall configuration of the refrigerator 300 will be described.

<Fridge body configuration>
11 to 16, a refrigerator 300 according to the present embodiment has a refrigerator main body 301 whose front is opened. As shown in FIG. 13 and the like, the refrigerator main body 301 includes an outer box 302 mainly made of steel plates, an inner box 303 formed of a hard resin such as ABS, and an outer box 302 and an inner box 303. And a foam heat insulating material 304 such as hard foam urethane filled. As shown in FIG. 12, the refrigerator body 301 is divided into a plurality of storage rooms by

partition plates

305 and 306. A refrigerator compartment 307 is disposed at the top of the refrigerator body 301, a vegetable compartment 308 is disposed at the bottom of the refrigerator compartment 307, and a freezer compartment 309 is disposed at the bottom of the refrigerator body 301. It is a type refrigerator. As shown in FIG. 11, the front opening of each storage chamber is closed by a door 310, a door 311, and a door 312 so that it can be opened and closed.

As shown in FIG. 13, a machine room 314 is provided in the upper rear region of the refrigerator main body 301, and houses a compressor 315 and high-pressure side components of the refrigeration cycle such as a dryer for removing moisture.

In addition, a cooling chamber 316 that generates cold air is provided on the back surface of the refrigerator main body 301. The cooling chamber 316 is formed from the back surface of the freezing chamber 309 to the lower back surface of the vegetable chamber 308. Between the cooling chamber 316 and the vegetable compartment 308, a back surface partition 317 having heat insulation properties is provided by foamed polystyrene or the like to partition the heat insulation.

In the cooling chamber 316, a cooler 318 is disposed, and a cooling fan 319 is disposed above the cooler 318. The cooling air cooled by the cooler 318 is forcibly circulated to the refrigerating room 307, the vegetable room 308, and the freezing room 309 by the cooling fan 319, and each room is cooled.

Also, in the lower space of the cooler 318, as shown in FIGS. 15 and 18 and the like, a defrost heater 328 for defrosting the frost and ice adhering to the cooler 318 and its periphery is disposed. A drain pan 329 for receiving defrost water generated at the time of defrosting is disposed below the defrost heater 328, and the defrost water is discharged from the deepest portion of the drain pan 329 to the evaporating dish through the drain tube.

Next, the cold air circulation configuration will be described.

<Cooling air circulation path configuration>
As shown in FIGS. 18 and 19, the cooling chamber 316 that generates cool air is formed between the rear partition 317 and the refrigerator main body 301. The cooling chamber cool air conveyance path 330 is opened downstream of the cooling fan 319, and the cold air generated in the cooling chamber 316 is blown into each chamber via the cooling chamber cold air conveyance path 330.

As shown in FIGS. 15, 16, and 17, in particular, FIG. 17, the upper part of the cooling chamber cool air conveyance path 330 is a refrigerated cool air discharge formed at a substantially central portion of the back surface of the refrigeration chamber 307 via a refrigeration chamber damper 331. It communicates with the air passage 332. As shown in FIGS. 16 and 17, a refrigerated cold air return air passage 333 from the refrigeration chamber 307 is provided adjacent to the side of the refrigerated cold air discharge air passage 332, and the lower part thereof is a vegetable compartment 308 and a cooling compartment. 316 communicates.

As shown in FIG. 16, the refrigerating chamber 307 is provided with a refrigerating / cooling air inlet 335 of a refrigerating / cooling air discharge air passage 332 at an appropriate location on the back wall, and opens to a refrigerating / cooling air return air passage 333 at a suitable location on the lower wall. A refrigerated cold air return port 336 is provided. Cold air from the cooling chamber 316 is supplied to the refrigerated cold air discharge air passage 332 via the refrigeration chamber damper 331, and is supplied from the refrigerated cold air inlet 335 to the refrigerated chamber 307. On the other hand, the cold air after cooling in the refrigerating room is supplied from the refrigerating cold air return port 336 to the vegetable room 308 through the refrigerating cold air return air passage 333 and circulated to the cooling room 316. Further, the refrigerating room 307 is provided with a partial room at the lower part thereof as described later. As shown in FIG. 17, the cool air from the cooling chamber 316 is supplied to the partial chamber via a partial chamber damper 331a, a partial chamber cool air discharge air passage 332a, and a partial chamber cool air inlet 336a.

In the present embodiment, as is apparent from FIG. 17, a cooling chamber cold air conveyance path 330, a refrigerated cold air discharge air path 332, and a partial chamber cold air discharge air path 332 a Are formed, and a return air passage 338 that connects the refrigerated cold air return air passage 333, the vegetable compartment 308, and the cooling compartment 316 is formed. The refrigerator compartment damper 331 is provided in the discharge air passage 337.

A communication passage 339 is formed between the refrigerated cold air discharge air passage 332 and the refrigerated cold air return air passage 333, and a part of the low-temperature cold air flowing through the refrigerated cold air discharge air passage 332 is transferred to the refrigerated cold air return air passage 333. It is comprised so that it may mix.

Further, as shown in FIG. 17, a cold air return duct 340 extending downward is provided on the back surface of the freezing chamber 309 on the side of the cooler 318 of the cooling chamber 316. The upper part of the cool air return duct 340 communicates with the vegetable compartment 308 via the return air passage 338, and the lower part opens near the lower part of the cooling chamber 316. The cold air after cooling the vegetable room 308 is circulated from the lower opening of the cold air return duct 340 to the cooling room 316 via the cold air return duct 340.

On the other hand, as shown in FIG. 19, the freezer compartment 309 has a freezer cold air inlet 342 communicating with the lower part of the rear cooler conveying path 330 on the back of the rear partition 317 at the upper part of the rear wall 341, A refrigerated cold air return port 343 is formed in the lower portion of 316. Cold air from the cooling chamber 316 is supplied from the lower part of the cooling chamber cold air conveyance path 330 through the freezing cold air inlet 342, and the cold air after cooling of the freezing chamber is circulated to the cooling chamber 316 via the freezing cold air return port 343.

Next, the configuration of the vegetable room 308 will be described.

<Vegetable room configuration>
In the vegetable compartment 308, as shown in FIGS. 16 and 21, it is a part closer to the left or right of the back wall (in this embodiment, the lower part of the right part when viewed from the front), and the refrigerated cold air return air passage 333 The vegetable room cold air inlet 344 is provided in the return air passage 338 communicating with the vegetable room. Above the vegetable room cold air inlet 344, a vegetable cold air return port 346 that opens to the return air passage 338 and connects to the cooling chamber 316 is provided.

Furthermore, in the vegetable compartment 308, as shown in FIG. 21 in particular, the rear compartment 317 on the back of the vegetable compartment 308 is used, and the vegetable compartment passage 350 in the vertical direction is provided at the front position of the cool air return air passage 338. Are vertically formed. The upper part of the vegetable compartment passage part 350 is located near the vegetable cold air return port 346 and the lower part communicates with the vegetable cold air inlet 344. A vegetable room fan 353 made of a propeller fan or the like is disposed at a portion communicating with the vegetable room cold air inlet 344.

The vegetable compartment 308 is formed with a first passage 347a on the upper surface of the vegetable compartment 308 so as to be connected to the vegetable compartment passage portion 350 and the vegetable cold air return port 346. A first vegetable cold air inlet 347 is provided.

In addition, in the vegetable compartment 308 of the present embodiment, as shown in FIG. 22 and FIG. 23, the vegetable compartment cold air inlet 344 is located at the upper part of the rear partition 317 serving as the rear face of the vegetable compartment 308. A second vegetable cold air inlet 351 is provided in a portion (in the present embodiment, the upper left side in the left corner) that is a diagonal position. The 2nd channel | path 351a which has the 2nd vegetable cold air inlet 351 is also connected to the upper part of the vegetable compartment channel | path part 350 and the vegetable cold air return port 346, as shown in FIG.

Next, the configuration of the vegetable case 1 will be described.

<Vegetable case configuration>
As shown in FIGS. 20 and 24, the vegetable case 1 is disposed in the vegetable compartment 308. The vegetable case 1 is fitted into a rail-like support member 356 (see FIG. 24) attached to the inner surface of the door 311, and is taken in and out of the vegetable compartment 308 as the door 311 is opened and closed.

As shown in FIG. 25, the vegetable case 1 includes a lower container 357 and an upper container 358 placed on the upper surface opening of the lower container 357.

The lower container 357 has a partition plate 359 that divides the inside into left and right sides, and one side partitioned by the partition plate 359 (in this embodiment, the vegetable room fan 353 on the right side as viewed from the front of the refrigerator 300 is installed. Is arranged as a non-vegetable storage portion 360 for storing PET bottles, packs, and the like, and is formed deeper than the other vegetable storage portion 361.

As shown in FIG. 28, the partition plate 359 is formed with a horizontally long opening 3 in a substantially central portion, and the regenerated cellulose membrane unit 8 is detachably installed in the opening 3. The regenerated cellulose membrane unit 8 is formed by integrally molding the regenerated cellulose membrane 4 on the fixed frame 6. In the state shown in FIG. 28 (when the partition plate 359 provided with the regenerated cellulose membrane unit 8 is viewed from the outside of the lower container 357), the right end of the regenerated cellulose membrane unit 8 is the opening edge of the partition plate 359. The engagement piece 362-3 at the left end is fitted and installed in the engagement recess 359-4 at the other end opening edge of the partition plate 359.

Also, the partition plate 359 is provided with mounting piece portions 359-2a and 359-2b at both ends thereof. As shown in FIGS. 29A and 29B, hanging pieces 359-3a and 359-3b are integrally formed from the placing pieces 259-2a and 259-2b. The hanging pieces 359-3a and 359-3b are fitted into a recess 357a formed at the upper end of the outer peripheral wall of the lower container 357, and the placing pieces 359-2a and 359-2b are the outer peripheral wall of the lower container 357. It is placed on the upper end and installed in the lower container 357.

Further, the upper container 358 is placed on the upper surface opening portion of the vegetable storage part 361 partitioned by the partition plate 359 and covers the vegetable storage part 361. As shown in FIG. 31, the upper container rail portion 363 formed on the bottom surface of the upper container 358 is placed on the lower container rail portion 364 formed on the upper surface opening left side of the lower container 357 and the upper end of the partition plate 359. Is done. The flange 365 provided in the upper opening of the upper container 358 is arranged so that the upper container 358 is moved back and forth along the

guides

366a and 366b provided in the upper side wall and the ceiling surface portion of the vegetable compartment 308 shown in FIGS. It is provided so that it can slide freely.

Here, as shown in FIG. 33, the upper container rail portion 363 of the upper container 358 has a straight portion 367, and a projection 368 is provided in front of the upper container rail portion 363 (in the direction of the arrow in FIG. 33). Is provided. The lower container rail portion 364 of the lower container 357 has a straight portion 369 and a downward inclined portion 370 connected to the straight portion 369. In the rear part of the lower container rail part 364 of the lower container 357, an intersection part 371 connecting the straight line part 369 and the inclined part 370 is provided, and in the front part, a concave part 372 in which the protruding part 368 is accommodated is provided. It has been.

With such a configuration, the vegetable case 1 is pulled out together with the door 311 together with the upper container 358 and the lower container 357 when the door 311 is pulled out. It can be pushed into the chamber 308 and moved.

In the vegetable compartment 308, a space is provided between the vegetable case 1, the partition plate 306 under the vegetable case 1, and the inner peripheral wall surface of the vegetable compartment 308. This space is the vegetable compartment cold air inlet 344. It is an air passage through which cold air flows.

Further, the upper opening edge of the upper container 358 of the vegetable case 1 is located in a portion close to the partition plate 306 at the top of the vegetable compartment 308 and located above the vegetable compartment cold air inlet 344. In this way, the cold air from the vegetable room cold air inlet 344 is arranged so that it does not directly enter the upper container 358 and the lower container 357 of the vegetable case 1, and is further provided in the partition plate 359. It arrange | positions so that a wind may not hit directly to the cellulose membrane unit 8. FIG. This is to prevent condensation on the regenerated cellulose film 4 by not directly applying wind to the regenerated cellulose film 4.

Note that a lid that closes the upper opening of the upper container 358 may be provided in the upper opening of the upper container 358. With such a configuration, it is possible to more reliably prevent cold air from entering the vegetable case 1.

Further, as shown in FIG. 25, the vegetable case 1 is provided with a partition plate 359 that divides the inside of the lower container 357 into left and right portions, but is not divided into left and right by the partition plate 359, as shown in FIG. , And may be partitioned in the front-rear direction. In this case, since the vegetable room cold air inlet 344 is provided in the back wall body 341, the cold air flows into the vegetable room 308 from the back of the vegetable case 1 through the vegetable room cold air inlet 344. With such a configuration, the regenerated cellulose membrane unit 8 is more difficult to be directly exposed to cold air, so that condensation on the regenerated cellulose membrane 4 can be prevented and the performance of the regenerated cellulose membrane 4 can be utilized more effectively. it can.

Next, the configuration of the refrigerator compartment 307 will be described.

<Refrigerator configuration>
As shown in FIG. 13 and the like, the refrigerator compartment 307 includes a plurality of storage shelves 373 and a partial chamber 374 that can be cooled to a semi-refrigeration temperature zone. Each of the plurality of storage shelves 373 and the partial chamber 374 is provided with a refrigerated cold air inlet 335 (see FIGS. 15 and 16) and a refrigerated cold air return port 336 (see FIG. 16) at appropriate positions. An operation unit 375 for setting the internal temperature of each room, and making ice making and quick cooling is disposed at an appropriate side wall of the refrigerator compartment 307.

Next, the configuration of the freezer compartment 309 will be described.

<Freezer configuration>
As described with reference to FIG. 19, the freezer compartment 309 has a freezing cold air inlet 342 that communicates with the lower part of the cooling room cold air conveyance path 330 on the back of the rear partition 317 at the upper part of the rear wall. A freezing cold air return port 343 communicating with the freezing chamber 309 is formed. In addition, a freezer damper is also incorporated at an appropriate position in the passage from the cooling room 316 to the freezer room 309. The freezing room 309 is also provided with a freezing room container 376 placed on the frame of the door 312, and an ice making device 377 is incorporated in the upper part of the freezing room container 376 (see, for example, FIG. 14). .

Next, the control configuration of the refrigerator 300 will be described.

<Control configuration>
FIG. 34 shows a control block diagram in refrigerator 300 of the present embodiment. The refrigerator compartment temperature detector 378, the vegetable compartment temperature detector 379, and the freezer compartment temperature detector 380 are all formed of thermistors and are installed at appropriate locations in the refrigerator compartment 307, the vegetable compartment 308, and the freezer compartment 309, respectively. . The control unit 381 that performs overall control of the refrigerator 300 is configured by a macro computer or the like, and is based on outputs from the refrigerating room temperature detection unit 378 and the freezer room temperature detection unit 380 in accordance with control software that is incorporated in advance. The damper 331 and the freezer compartment damper 334 are controlled to open and close. In addition, the control unit 381 drives the compressor 315 and the cooling fan 319 to perform temperature control so that each chamber has a set temperature. Furthermore, the control unit 381 controls the operation of the vegetable compartment fan 353 incorporated in the vegetable compartment passage portion 350 of the vegetable compartment 308 based on outputs from the refrigerator compartment temperature detection portion 378 and the vegetable compartment temperature detection portion 379. Specifically, when any one of the refrigerator compartment temperature detector 378 and the vegetable compartment temperature detector 379 detects a temperature higher than the set temperature, the vegetable compartment fan 353 is driven.

About the refrigerator 300 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

First, the operation of the refrigeration cycle will be described.

Depending on the set temperature in the refrigerator 300, a refrigeration cycle is operated by a signal from the control unit 381, and a cooling operation is performed. The high-temperature and high-pressure refrigerant discharged by the operation of the compressor 315 is condensed and liquefied to some extent by the condenser, and further passes through the refrigerant pipes disposed on the side and back of the refrigerator 300 and the front opening of the refrigerator 300. While preventing condensation in the refrigerator 300, the liquid is condensed and sent to the capillary tube. Thereafter, the refrigerant is reduced in pressure in the capillary tube while exchanging heat with the suction pipe to the compressor 315, and becomes a low-temperature and low-pressure liquid refrigerant and sent to the cooler 318 in the cooling chamber 316. Here, the refrigerant in the cooler 318 is evaporated and vaporized, and cold air for cooling each storage chamber is generated in the cooling chamber 316 having the cooler 318.

Next, the cooling operation by the cold air circulation will be described.

The low temperature cold air generated in the cooling chamber 316 is sent from the cooling chamber cold air conveyance path 330 to the refrigerator compartment 307 and the freezer compartment 309 by the cooling fan 319. The cool air supplied to the refrigerating room 307 cools the refrigerating room 307 and is then supplied to the vegetable room 308, where each room is cooled to a set temperature. The cold air after cooling each chamber returns to the cooling chamber 316 again, is cooled by the cooler 318, and is circulated to each chamber by the cooling fan 319. In addition, the control unit 381 operates and stops the compressor 315 and the cooling fan 319 based on the temperatures detected by the refrigerating room temperature detecting unit 378 and the freezing room temperature detecting unit 380, and supplies the cold air to each room. The room damper 331 and the freezer damper 334 are controlled to open and close. Thereby, each chamber is maintained in a set temperature range.

Next, the cooling operation of the vegetable compartment 308 will be described.

In the vegetable room 308, the cold air after cooling from the refrigerated cold air return air passage 333 is supplied from the vegetable room cold air inlet 344 provided in the cold air return air passage 338 and cooled as shown in FIG. The This cold air gently flows into the vegetable compartment 308 from the vegetable compartment cold air inlet 344 through the vegetable compartment passage portion 350 by the air blowing pressure of the cooling fan 319, and the lower container 357 and the upper container 358 of the vegetable case 1, It flows through the space between the inner wall. Then, the vegetables and plastic bottles stored in the vegetable case 1 are indirectly cooled from the outer periphery of the lower container 357 and the upper container 358, and the vegetable cold air return port 346 passes through the refrigerated cold air return air passage 333. It circulates from the cold air return duct 340 to the cooling chamber 316.

Here, in the refrigerator 300 shown in the present embodiment, as shown in FIG. 21, the vegetable room fan 353 is provided in the vegetable room passage portion 350 of the vegetable room 308. When the vegetable compartment fan 353 rotates, most of the return cold air flowing through the return air passage 338 is sucked into the vegetable compartment passage portion 350 from the vegetable cold air inlet 344 and is located in the lower part of the vegetable compartment 308 from the outlet 354 of the vegetable compartment fan 353. It is supplied toward the rear surface of the container 357.

The cold air supplied toward the lower container 357 of the vegetable compartment 308 circulates in the space between the lower container 357 and the upper container 358 and the bottom and inner peripheral walls of the vegetable compartment 308 by the air blowing pressure of the cooling fan 319. It flows faster than the flow of, and returns from the vegetable cold air return port 346 to the cooling chamber 316 through the return air passage 338 and circulates. At that time, the cold air other than the cold air returning to the cooling chamber 316 is circulated from the first vegetable cold air suction port 347 and the second vegetable cold air suction port 351 provided in the upper part of the vegetable chamber 308. And it is attracted | sucked by the 2nd channel | path 351a and is attracted | sucked by the vegetable compartment fan 353 from the upper opening of the vegetable compartment channel | path part 350 connected with these channel | paths. And it is again supplied toward the lower container 357 in the vegetable compartment 308 from the blower outlet 354 of the vegetable compartment fan 353, and diffuses and circulates in the vegetable compartment 308.

Next, the effect of vegetable case 1 will be described.

First, in the vegetable case 1 of the refrigerator 300, as shown in FIGS. 24 and 25, the lower container 357 is divided into a vegetable storage unit 361 and a non-vegetable storage unit 360 by a partition plate 359. Further, an upper container 358 is placed in the upper opening of the vegetable storage unit 361. The vegetable case 1 has these three storage parts, and foodstuffs are divided and stored in each storage part. For example, fruits such as the upper container 358, vegetables in the vegetable storage unit 361, and drinks such as plastic bottles and packs can be efficiently stored in the non-vegetable storage unit 360.

In the vegetable case 1, the regenerated cellulose membrane unit 8 is installed on the partition plate 359 arranged in the vegetable storage unit 361. If vegetables etc. are stored in the vegetable storage part 361, it will be in a high humidity state by the water | moisture content transpired from the stored vegetables etc. However, when the inside of the vegetable storage unit 361 becomes a predetermined humidity or higher, for example, a saturation humidity or higher, the humidity component is stored in the non-vegetables through the regenerated cellulose membrane 4 provided on the partition plate 359 as shown by the broken line arrow in FIG. It penetrates into the part 360. As a result, the humidity in the vegetable storage unit 361 decreases.

Further, as the humidity in the vegetable storage unit 361 decreases, the amount of moisture transmitted through the regenerated cellulose membrane 4 decreases due to the action of the regenerated cellulose constituting the regenerated cellulose membrane 4, and the humidity in the vegetable storage unit 361 decreases. Disappear. As a result, the humidity of the vegetable storage unit 361 can be maintained at 80 to 95% RH.

As another effect, since the regenerated cellulose membrane 4 is located between the vegetable storage unit 361 and the non-vegetable storage unit 360 in the vegetable case 1, vegetables and the like are placed on the regenerated cellulose membrane 4. For example, the regenerated cellulose film 4 is not damaged.

Further, the partition plate 359 on which the regenerated cellulose membrane 4 is installed is not a box shape like the vegetable case 1 but is a plate-like member and has a small size, so the opening 3 in which the regenerated cellulose membrane unit 8 is installed. It can also be integrally formed with a partition plate 359 having

Further, in the present embodiment, as described above, the vegetable case 1 includes the lower container 357 and the upper container 358 slidably mounted back and forth on the upper part of the lower container 357, and the upper container 358. Is configured as a lid member that covers the top of the vegetable storage unit 361. With such a configuration, the upper container 358 can be effectively used as a lid member, and the upper part of the vegetable storage unit 361 can be reasonably covered, so that cold air can be prevented from entering the vegetable storage unit 361. .

As described above, the refrigerator 300 according to the present embodiment can cool and store vegetables and the like in a good state. In the refrigerator 300 of the present embodiment, the upper container 358 disposed in the vegetable case 1 can be slid lightly, and at the same time, the lower container 357 and the upper container 358 are brought into close contact with each other with no gap therebetween. It is also possible to prevent cold air from entering the inside. This point will also be described below.

When the upper container 358 of the vegetable case 1 of the refrigerator 300 according to the present embodiment is slid back and forth on the lower container 357, as shown in FIG. 33, a protrusion 368 provided on the upper container rail 363 is provided. In addition to being in contact with the straight portion 369 of the lower container rail portion 364, the straight portion 367 of the upper container rail portion 363 is in contact with the intersection 371 of the lower container rail portion 364. The upper container 358 is supported by these contact points and slides on the lower container rail portion 364 of the lower container 357. With such a configuration, the upper container 358 can be lightly slid even if it becomes heavier due to a large amount of fruits stored therein.

In the state where the door 311 is closed and the vegetable case 1 is housed in the vegetable compartment 308, the protrusion 368 of the upper container rail portion 363 enters the recess 372 of the lower container rail portion 364, and the upper container rail The straight portion 367 of the portion 363 and the straight portion 369 of the lower container rail portion 364 are brought into contact with each other, and these contact portions are brought into close contact with no gap. Therefore, the cold air flowing around the vegetable case 1 can be prevented from entering the vegetable storage part 361 of the lower container 357 from between the lower container 357 and the upper container 358, and the moisture permeability of the regenerated cellulose membrane 4 can be improved. It can be used efficiently.

As described above, the vegetable case 1 according to the first embodiment of the present invention has the regenerated cellulose membrane 4 having the opening 3 in at least a part of the wall surface constituting the vegetable storage portion and formed without using the base material. This is provided in the opening 3.

With this configuration, there is no need to take special measures such as adjusting the concentration of viscose and adjusting the density of the base material, and viscose, which is a raw material for regenerated cellulose, is extruded from a slit with a certain gap. The regenerated cellulose membrane 4 processed in this way can be used for humidity control in the vegetable case 1 as a moisture-sensitive moisture permeable membrane.

The regenerated cellulose membrane 4 used for the vegetable case 1 of Embodiment 1 of the present invention preferably has a density of 20 to 40 g / m2.

The regenerated cellulose membrane 4 having such a density has a moisture permeability in a high humidity region (humidity 95% RH) of about 4 to 12 times that in a low humidity region (humidity 50% RH). The vegetable case 1 can be kept at high humidity.

Moreover, in the vegetable case 1 of Embodiment 1 of this invention, Preferably, the nonwoven fabric 9 which has a shear force stronger than the regenerated cellulose film 4 is laminated | stacked on at least 1 surface of the surface and the back surface of the regenerated cellulose film 4. .

With such a configuration, even when food such as vegetables put into the vegetable case 1 hits the regenerated cellulose film 4, the regenerated cellulose film 4 is not easily broken. Can be increased.

In the vegetable case 1 of Embodiment 1 of the present invention, preferably, the regenerated cellulose film 4 and the non-woven fabric 9 are coated or dipped with viscose on the regenerated cellulose film 4 or non-woven fabric 9 and subjected to acid treatment to produce viscose. It is bonded by solidifying.

With such a configuration, the regenerated cellulose film 4 and the nonwoven fabric 9 can be bonded and fixed by a simple method such as acid treatment of viscose, unlike the method of bonding by using a binder (adhesive) or the like, A binder (adhesive) becomes unnecessary. For this reason, the regenerated cellulose membrane 4 and the nonwoven fabric 9 can be easily integrated without causing an impediment to the moisture permeation effect by the binder (adhesive), and it is easy to manufacture and the regenerated cellulose membrane 4 has a high moisture permeability. Can be obtained.

The

refrigerators

100 and 300 according to the second and third embodiments of the present invention include the vegetable case 1 according to the first embodiment of the present invention described above. The

refrigerators

100 and 300 according to the second embodiment and the third embodiment of the present invention include the vegetable case 1 having the regenerated cellulose film 4, thereby causing condensation on the vegetables stored in the vegetable case 1. And vegetables can be stored under high humidity conditions.

Furthermore, by using the refrigeration cycle system of the refrigerator 100, vegetables and the like can be stored at a low temperature, so that the freshness of the vegetables and the like can be maintained for a long time.

Further, in the

refrigerators

100 and 300 according to the second and third embodiments of the present invention, the regenerated cellulose membrane 4 is arranged at a high temperature portion in the temperature distribution in the vegetable case 1. If the relative humidity of the air in the air is the same, the higher the temperature, the greater the absolute amount of the water. Therefore, excess moisture in the vegetable case 1 gathers at a location where the temperature is high. Considering this property, the regenerated cellulose membrane 4 is arranged at a high temperature location in the vegetable case 1, so that excess moisture in the vegetable case 1 is easily discharged out of the vegetable case 1. Furthermore, the temperature of the regenerated cellulose membrane 4 itself is easily kept higher than the air temperature in the vegetable case 1. Thereby, the regenerated cellulose film 4 itself is unlikely to be below the dew point temperature, and dew condensation on the regenerated cellulose film 4 can be suppressed. In addition, when the humidity in the vegetable case 1 becomes low, the regenerated cellulose membrane 4 is not wetted by condensation and the humidity permeation amount is not kept high. Sometimes the amount of moisture transmission is suppressed, and the inside of the vegetable case 1 can be kept in a higher humidity state.

Moreover, the

refrigerators

100 and 300 of Embodiment 2 and Embodiment 3 of the present invention have a vegetable case lid 5 that covers the upper surface of the vegetable case 1 so that it can be opened and closed, and at least part of the vegetable case lid 5 is regenerated cellulose. A membrane 4 is provided. In general, since the warm air rises upward, the regenerated cellulose membrane provided on the vegetable case lid 5 installed on the top of the vegetable case 1 of the second embodiment of the present invention, that is, the top surface of the vegetable case 1. It is suppressed that the temperature of 4 becomes low. Therefore, it is possible to prevent dew condensation from occurring in the regenerated cellulose film 4 and to keep the vegetable case 1 in a higher humidity state.

Refrigerator 100 according to Embodiment 2 of the present invention includes a storage compartment (vegetable compartment 108) in which the vegetable case 1 can be stored by being insulated, and a cooler 112 that generates cool air for cooling the storage compartment. A cooling fan 113 that blows air cooled from the cooler 112 to the storage room, a cold air passage that blows cool air cooled from the cooler 112 to the storage room by the cooling fan 113, and cold air from the cold air passage to the storage room. And a cold air inlet portion (vegetable room cold air inlet portion 113a) for discharging. The regenerated cellulose membrane 4 is installed in the vegetable case 1 at a position where the cold air discharged from the cold air inlet is not directly applied.

With such a configuration, it is possible to suppress the temperature of the regenerated cellulose membrane 4 from being lowered by the cold air entering the storage chamber from the cold air inlet, and the vegetable case 1 is at low humidity, and the regenerated cellulose membrane 4 is near the dew point temperature. It is possible to prevent the humidity from decreasing to the dew point temperature or lower and only in the vicinity of the regenerated cellulose film 4. Further, it is possible to prevent dew condensation from occurring in the regenerated cellulose film 4 itself and increase the moisture permeation amount of the regenerated cellulose film 4. Further, when the regenerated cellulose membrane 4 is exposed to cold air outside the vegetable case 1, the pressure of the air outside the vegetable case 1 becomes lower than the pressure of the air inside the vegetable case 1, and the vegetable case 1 is caused by the pressure difference. The inside air can be prevented from passing through the regenerated cellulose membrane 4 and being discharged out of the vegetable case 1. Therefore, with such a configuration, the vegetable case 1 can be kept in a high humidity state for a longer time.

In the refrigerator 300 according to the third embodiment of the present invention, the inside of the vegetable case 1 is partitioned by the partition plate 359, and the regenerated cellulose membrane 4 is provided on the partition plate 359. Since the regenerated cellulose membrane 4 is provided on the partition plate 359 installed in the vegetable case 1, the regenerated cellulose membrane 4 makes it difficult for wind of cold air entering the storage chamber from the cold air inlet portion. Only the vicinity of the film 4 can be prevented from becoming high humidity. Therefore, with such a configuration, the moisture permeation amount of the regenerated cellulose membrane 4 can be suppressed, and the humidity of the vegetable case 1 can be kept high for a longer period.

Although the embodiment of the present invention has been described above, the configuration described in the above embodiment is shown as an example for carrying out the present invention, and can be variously modified within the scope of achieving the object of the present invention. Needless to say.

The present invention can provide a vegetable case capable of maintaining the humidity in the vegetable case substantially constant and exhibiting a special effect that the vegetables and the like can be cooled and stored in a good state, and a refrigerator using the vegetable case. Therefore, it can be widely used not only for home use but also for commercial refrigerators.

DESCRIPTION OF SYMBOLS 1 Vegetable case 2 Vegetable case main body 3 Opening part 4 Regenerated cellulose membrane 5 Vegetable case cover 6 Fixed frame 8 Regenerated cellulose membrane unit 9 Nonwoven fabric 10 Viscose layer 100 Refrigerator 101 Heat insulation box 102 Outer box 103 Inner box 104 Refrigeration room 105 Switching room 106 Ice making room 107 Freezing room 108 Vegetable room 101a Machine room 109 Compressor 110 Cooling room 111 Rear partition wall 112 Cooler 113 Cooling fan 113a Vegetable room cold air inlet 114 Radiant heater 115 Drain pan 116 Drain tube 117 Evaporating dish 125 Second Partition wall (freezer compartment and vegetable compartment)
DESCRIPTION OF SYMBOLS 300 Refrigerator 301 Refrigerator main body 302 Outer box 303 Inner box 304 Foam insulation material 305 Partition plate 306 Partition plate 307 Refrigeration room 308 Vegetable room 309 Freezer room 310 Door 311 Door 312 Door 314 Machine room 315 Compressor 316 Cooling room 317 Back partition 318 Cooler 319 Cooling fan 328 Defrost heater 329 Drain pan 330 Cooling chamber cool air conveyance path 331 Refrigeration chamber damper 331a Partial chamber damper 332 Refrigerated cold air discharge air path 332a Partial chamber cold air discharge air path 333 Refrigerated cold air return air path 335 Refrigerated cold air inlet 335 Refrigerated cold air return port 336a Partial chamber cold air inlet portion 337 Discharge air passage 338 Return air passage 339 Communication passage 340 Cold air return duct 341 Rear wall body 342 Refrigeration cold air inlet 343 Refrigeration cold air return port 344 Field Room cold air inlet 346 Vegetable cold air return port 347 Vegetable cold air inlet 347a First passage 350 Vegetable room passage 351 Second vegetable cold air inlet 351a Second passage 353 Vegetable room fan 354 Outlet 356 Support member 357 Lower container 357a Recess 358 Upper container 359 Partition plate 359-2a Placement piece portion 359-2b Placement piece portion 359-3a Suspension piece portion 359-3b Suspension piece portion 359-4 Engaging recess 360 Non-vegetable storage portion 361 Vegetable storage portion 362 -3 engagement piece 363 Upper container rail part 364 Lower container rail part 365 Flange 366a Guide 366b Guide 367 Linear part 368 Projection part 369 Linear part 370 Inclined part 371 Intersection part 372 Concave part 373 Storage shelf 374 Partial room 375 Operation part 376 Freezing room Container 77 ice making device 378 the refrigerating compartment temperature sensing unit 379 vegetable room temperature detector 380 freezer compartment temperature sensing unit 381 control unit

Claims

A vegetable case having an opening in at least a part of a wall surface constituting the vegetable storage portion, and a regenerated cellulose film formed without using a base material provided in the opening.
The vegetable case according to claim 1, wherein the density of the regenerated cellulose membrane is 20 to 40 g / m 2 .
The vegetable case according to claim 1 or 2, wherein a nonwoven fabric having a shearing force stronger than that of the regenerated cellulose film is laminated on at least one surface of the regenerated cellulose film.
The vegetable case according to claim 3, wherein the regenerated cellulose film or the non-woven fabric is coated or dipped with viscose, the viscose is solidified by acid treatment, and the regenerated cellulose film and the non-woven fabric are bonded to each other.
The refrigerator provided with the said vegetable case as described in any one of Claim 1 to 4.
The refrigerator according to claim 5, wherein the regenerated cellulose film is provided at a high temperature position in the vegetable case in the vegetable case.
The refrigerator according to claim 5 or 6, further comprising a lid that covers the top surface of the vegetable case so as to be openable and closable, wherein the regenerated cellulose film is provided on the lid.
A storage room in which the vegetable case can be stored; a cooler that generates cool air for cooling the storage room; a cooling fan that blows air cooled from the cooler to the storage room; A cool air passage through which cool air cooled by the cooling fan from the cooler to the storage chamber is blown, and a cold air inlet portion through which the cool air is discharged from the cold air passage to the storage chamber; The refrigerator according to any one of claims 5 to 7, wherein the refrigerator is provided at a position where the cool air discharged from the cool air inlet portion does not directly hit the case.
The refrigerator according to any one of claims 5 to 8, wherein an interior of the vegetable case is partitioned by a partition plate, and the regenerated cellulose film is provided on the partition plate.