CN112984933B - Humidity sensing film, fruit and vegetable container and refrigerator having the same - Google Patents

Abstract

The invention provides a humidity sensing film, a fruit and vegetable container and a refrigerator with the same. The humidity sensing film is provided with at least one deformable humidity regulating area, the deformable humidity regulating area is provided with a first surface and a second surface which are opposite, the first surface is configured to absorb moisture of an area facing the first surface, the deformable humidity regulating area is configured to generate prolonged deformation along with the increase of the moisture amount absorbed by the first surface, the prolonged deformation is enough to enable the deformable humidity regulating area to curl towards the side of the second surface when the humidity of the area facing the first surface is increased to a first threshold value so as to form an opening which enables the area facing the first surface to be communicated with the side of the second surface, and the deformable humidity regulating area is further configured to restore the shape along with the decrease of the moisture amount absorbed by the first surface so as to close the opening when the humidity of the area facing the first surface is reduced to a second threshold value. The scheme of the invention can realize a high-efficiency self-adaptive humidity adjusting function and improve the fresh-keeping performance of a storage space (especially a fruit and vegetable container).

Description

Humidity sensing film, fruit and vegetable container and refrigerator with same

Technical Field

The invention relates to the technical field of article storage, in particular to a humidity sensing film, a fruit and vegetable container and a refrigerator with the same.

Background

For fresh fruits and vegetables, the storage is more beneficial to fresh keeping under higher humidity, so that the aim of storing the environment with high humidity is generally achieved by increasing the tightness of the container when the fruits and vegetables are stored. For example, in the case of a refrigerator, it is common to maintain high humidity in a fruit and vegetable box by improving the sealability of the fruit and vegetable box in a refrigerating chamber. However, if too much food materials are stored in the fruit and vegetable box, excessive water vapor cannot be dispersed, so that internal dew condensation is caused, and if more dew contacts with the food materials, the fruit and vegetable can be possibly rotten.

In order to solve the problem of fruit and vegetable rot caused by the moisture condensation, the moisture permeability film is used on the cover plate of the fruit and vegetable box in the prior art to carry out moisture permeability. The power of the moisture permeable membrane is humidity difference, when the difference between the humidity in the fruit and vegetable box and the humidity outside the box is larger, the moisture permeable speed is high, and when the difference between the humidity in the fruit and vegetable box and the humidity outside the box is smaller, the moisture permeable speed is low, so that the mode of completely relying on the power of the humidity difference for moisture permeation cannot ensure the complete timely emission of the redundant water vapor in the fruit and vegetable box. (2) Because there is no active gas circulation, the water vapor which is transmitted from the fruit and vegetable box can stay in the relative sealing space between the rack and the fruit and vegetable box cover plate, and the high humidity water vapor in the space moves slowly to other positions of the refrigerating chamber, so that the relatively high humidity in the space can be kept for a long time, and the difference between the humidity in the fruit and vegetable box and the humidity outside the box is reduced, thereby influencing the moisture permeability speed and efficiency.

Disclosure of Invention

An object of the present invention is to provide a humidity sensing film which can sense the level of humidity and cyclically change shape.

A further object of the present invention is to provide a fruit and vegetable container capable of realizing self-adaptive humidity adjustment by utilizing the property that the humidity sensing film can sense the humidity and change the shape circularly.

Still a further object of the present invention is to achieve the exchange cycle of moisture and external air that is permeated from the inside of the fruit and vegetable container through the frame with ventilation function of the rack above the top wall of the fruit and vegetable container, so as to increase the moisture permeation rate.

According to one aspect of the present invention, embodiments of the present invention provide a humidity sensing membrane having at least one deformable humidity conditioning region with opposing first and second surfaces;

The first surface is configured to absorb moisture in an area facing the first surface;

the deformable humidity-conditioning region is configured to undergo an elongated deformation with an increase in the amount of moisture absorbed by the first surface, and when the humidity of the region facing the first surface increases to a first threshold, the elongated deformation is sufficient to cause the deformable humidity-conditioning region to curl toward the second surface side to form an opening communicating the region facing the first surface with the second surface side;

The deformable conditioning region is further configured to resume shape as the amount of moisture absorbed by the first surface decreases to close the opening when the humidity of the region facing the first surface decreases to a second threshold.

Optionally, the first threshold is in the range of 90% to 100%;

The second threshold is in the range of 80% to 90%.

Optionally, the first threshold is 95%;

the second threshold is 85%.

Optionally, the deformable conditioning region comprises:

A hydrophilic layer as a first surface of the deformable humidity-conditioning region configured to undergo prolonged deformation with an increase in the amount of absorbed moisture and to recover shape with a decrease in the amount of absorbed moisture, and

A hydrophobic layer as a second surface of the deformable conditioning region.

Alternatively, the hydrophilic layer is made of a styrene-olefin copolymer containing sulfonic acid functional groups and sodium carboxymethylcellulose;

The hydrophobic layer is made of a styrene-olefin copolymer.

Alternatively, the content of sodium carboxymethyl cellulose in the hydrophilic layer is in the range of 5 to 8% by mass.

According to another aspect of the present invention, an embodiment of the present invention further provides a fruit and vegetable container, including:

a housing having a vent, and

The humidity sensing film of any one of the above, wherein the humidity sensing film covers the vent of the fruit and vegetable container and the first surface of the deformable humidity conditioning area faces the interior of the fruit and vegetable container.

Optionally, the fruit and vegetable container further comprises:

The supporting plate is arranged at the air vent of the fruit and vegetable container and is fixed with the humidity sensing film to support the humidity sensing film;

The support plate further has a notch corresponding to the deformable humidity-conditioning area, the notch of the support plate being configured such that the first surface of the deformable humidity-conditioning area absorbs moisture in the fruit and vegetable container through the notch of the support plate, and/or

The cover plate is provided with a plurality of ventilation holes, is arranged on one side of the second surface of the humidity sensing film and covers the humidity sensing film, and a gap allowing the deformable humidity adjusting area to curl is formed between the cover plate and the humidity sensing film.

Optionally, the fruit and vegetable container is a drawer type fruit and vegetable box, the shell is a barrel of the drawer, and the vent of the fruit and vegetable container is arranged on the top wall of the barrel.

Optionally, the fruit and vegetable container further comprises:

a rack arranged above the top wall of the cylinder body and

The rack is provided with a frame with a ventilation function, so that moisture in the fruit and vegetable container enters a space between the rack and the humidity sensing film through an opening formed by a deformable debugging area of the humidity sensing film, and then is exchanged with air outside the fruit and vegetable container through the frame.

Optionally, the frame is a frame of a grid structure.

According to still another aspect of the present invention, there is also provided a refrigerator including:

A case defining a storage compartment therein, and

The fruit and vegetable container of any one of the above, disposed within the storage compartment.

The humidity sensing film of the invention is provided with at least one deformable humidity regulating area, the deformable humidity regulating area is provided with a first surface and a second surface which are opposite, the first surface is configured to absorb moisture of the area facing the first surface, the deformable humidity regulating area is configured to generate prolonged deformation along with the increase of the moisture absorbed by the first surface, and when the humidity of the area facing the first surface is increased to a first threshold value, the prolonged deformation is enough to enable the deformable humidity regulating area to curl towards the side of the second surface so as to form an opening which enables the area facing the first surface to communicate with the side of the second surface. The deformable conditioning region is further configured to resume shape as the amount of moisture absorbed by the first surface decreases to close the opening when the humidity of the region facing the first surface decreases to a second threshold. In this way, when the humidity sensing film is applied to a relatively closed storage space (such as a fruit and vegetable container), when the humidity in the storage space is raised to a first threshold value, the deformable humidity-adjusting area of the humidity sensing film is curled towards the second surface side to form an opening, so that excessive water vapor in the storage space is efficiently and rapidly discharged through the opening, the excessive humidity in the storage space is reduced, the condensation phenomenon is avoided, and when the humidity in the storage space is lowered to a second threshold value, the deformable humidity-adjusting area of the humidity sensing film is contracted to restore the shape so as to close the opening to reseal the storage space, so that the humidity in the storage space can be maintained at a proper level, the shape is circularly changed through sensing the humidity, the efficient self-adaptive humidity-adjusting function is realized, and the fresh-keeping performance of the storage space (particularly the fruit and vegetable container) is improved.

Further, in the fruit and vegetable container realizing self-adaptive humidity regulation by utilizing the humidity sensing film, the frame with the ventilation function is arranged on the rack above the fruit and vegetable container, so that after the moisture in the fruit and vegetable container enters the space between the rack and the humidity sensing film through the opening formed by the deformable debugging area of the humidity sensing film, the air circulation is realized by exchanging the air outside the fruit and vegetable container through the frame, and particularly when the fruit and vegetable container is applied to a refrigerator, the moisture penetrating from the fruit and vegetable container can conveniently enter the active cold air circulation of the refrigerator, thereby obviously accelerating the moisture permeability.

The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

FIG. 1 is a schematic view of a humidity sensing membrane according to one embodiment of the invention;

FIG. 2 is a schematic illustration of the deformable conditioning region of the wetness sensing film of FIG. 1 in a raw state and a rolled state;

FIG. 3 is a schematic view of a fruit and vegetable container according to an embodiment of the present invention;

fig. 4 is an assembled perspective view of a fruit and vegetable container according to another embodiment of the present invention;

FIG. 5 is an exploded view of the fruit and vegetable container shown in FIG. 4;

Fig. 6 is a schematic view of a structure of a refrigerator according to an embodiment of the present invention.

Detailed Description

In order to solve the technical problems, the embodiment of the invention provides a humidity sensing film, a fruit and vegetable container and a refrigerator with the humidity sensing film.

Fig. 1 is a schematic structural view of a humidity sensing membrane 100 according to one embodiment of the present invention. Referring to fig. 1, the humidity sensitive membrane 100 has at least one deformable humidity conditioning region 110, and the deformable humidity conditioning region 110 has opposite first and second surfaces 111 and 112. The first surface 111 of the deformable conditioning region 110 is configured to absorb moisture in the region facing the first surface 111. The deformable humidity-conditioning area 110 is configured to undergo an elongated deformation with an increase in the amount of moisture absorbed by the first surface 111, and when the humidity of the area facing the first surface 111 increases to a first threshold value, the elongated deformation is sufficient to cause the deformable humidity-conditioning area 110 to curl toward the second surface 112 side to form an opening 113 communicating the area facing the first surface 111 with the second surface 112 side. The deformable conditioning area 110 is further configured to resume shape to close the opening 113 as the amount of moisture absorbed by the first surface 111 decreases when the humidity of the area facing the first surface 111 decreases to a second threshold.

Fig. 2 shows a schematic view of the deformable humidity-conditioning region 110 of the humidity-sensing membrane 100 in a raw state and a curled state, wherein (a) shows the raw state of the deformable humidity-conditioning region 110 and (b) shows the curled state of the deformable humidity-conditioning region 110, according to an embodiment of the present invention. As shown in fig. 1 and 2, the deformable humidity control area 110 is flat in its original shape. In the original shape, the deformable humidity-conditioning area 110 is in the same plane as the flat humidity-sensing membrane body 120 (i.e. the portion other than the deformable humidity-conditioning area 110) and is tightly combined to form a seal, so that the gas in the area facing the first surface 111 cannot substantially permeate the humidity-sensing membrane 100 to reach the second surface 112 side of the humidity-sensing membrane 100. In the curled state, the deformable humidity-controlling area 110 is curled toward the second surface 112 side with respect to the humidity-sensing film body 120, such that an opening 113 is formed between each deformable humidity-controlling area 110 and the humidity-sensing film body 120, and the gas in the area facing the first surface 111 (including the humidity therein) can reach the second surface 112 side of the humidity-sensing film 100 through the opening 113.

In this way, in the case where the humidity sensing film 100 of the embodiment of the present invention is applied to a relatively closed storage space (for example, a fruit and vegetable container), when the humidity in the storage space increases to a first threshold (the first threshold is not limited to be called an opening threshold because the humidity sensing film 100 forms the opening 113), the deformable humidity adjusting area 110 of the humidity sensing film 100 will curl toward the second surface 112 side to form the opening 113, so that the excessive moisture in the storage space can be effectively and rapidly discharged through the opening 113, the excessive humidity in the storage space can be reduced, and the condensation phenomenon can be avoided. When the humidity in the storage space is reduced to the second threshold (the opening 113 is closed at this time, so the second threshold may be called as a closing threshold), the deformable humidity-adjusting area 110 of the humidity-sensing film 100 will shrink to restore the shape to close the opening 113 to reseal the storage space, so that the humidity in the storage space can be maintained at a proper level, and the shape is cyclically changed by sensing the humidity, thereby realizing a high-efficiency self-adaptive humidity-adjusting function and improving the fresh-keeping performance of the storage space (especially the fruit and vegetable container).

In some embodiments, the deformable humidity-conditioning area 110 may be an area obtained by die cutting the humidity-sensing membrane 100. Referring to fig. 1, a portion of the edges of the deformable humidity-conditioning area 110 are integrated with the humidity-sensing film body 120, and the rest of the edges of the deformable humidity-conditioning area 110 are cut away from the humidity-sensing film body 120 by punching, so that the deformable humidity-conditioning area 110 can be curled and the humidity-sensing film body 120 can recover the cyclic change of shape. It should be noted that the number and shape of the deformable humidity-conditioning areas 110 shown in fig. 1 are merely illustrative, and may be selected according to practical application requirements, which is not limited by the present invention. For example, the number of the deformable humidity-conditioning areas 110 may be set to 3, 4, 8, or the like. The shape of the deformable conditioning region 110 may be rectangular, trapezoidal, triangular, etc.

In a preferred embodiment, six rectangular areas (particularly preferably square areas) may be punched out of the humidity sensitive membrane 100 as the deformable humidity control area 110, one side of each rectangular area being integral with the humidity sensitive membrane body 120, and the other three sides being cut from the humidity sensitive membrane body 120. By adopting the rectangular deformable humidity-adjusting area 110, the deformation of the deformable humidity-adjusting area 110 in the direction of the prolonged deformation is more uniform, and the effect of self-adaptive moisture permeability or sealing due to deformation of the sensing humidity is ensured.

The first threshold (on threshold) and the second threshold (off threshold) mentioned herein may be adjusted by changing the structure, materials, etc. of the deformable humidifying region 110 of the humidity-sensing membrane 100 to meet the needs of the actual application. In a preferred embodiment, the first threshold may be in the range of 90% to 100%, more preferably 95%, and the second threshold may be in the range of 80% to 90%, more preferably 85%. By reasonably setting the opening threshold and the closing threshold of the humidity sensing film 100, the humidity sensing film 100 of the embodiment of the invention can be applied to storage application occasions (such as fruit and vegetable storage) requiring high humidity, so that the storage environment can be maintained at proper humidity, and the fresh-keeping effect is improved.

In one embodiment, the deformable conditioning region 110 may include a hydrophilic layer 114 and a hydrophobic layer 115 laminated, the hydrophilic layer 114 being the first surface 111 of the deformable conditioning region 110 and the hydrophobic layer 115 being the second surface 112 of the deformable conditioning region 110. Hydrophilic layer 114 is configured to deform in an elongated manner as the amount of absorbed moisture increases and to contract in response to a decrease in the amount of absorbed moisture to recover its shape. In other words, as the humidity in the surrounding environment increases, the moisture absorbed by the hydrophilic layer 114 increases, and the prolonged deformation thereof increases, whereas the hydrophilic layer 114 discharges the absorbed moisture to shrink. The hydrophobic layer 115 is insensitive to humidity and moisture and resists deformation of the hydrophilic layer 114 upon prolonged deformation. Thus, when the humidity of the area facing the hydrophilic layer 114 increases to an opening threshold, the prolonged deformation of the hydrophilic layer 114 will accumulate enough to cause the deformable humidity control area 110 to curl toward the hydrophobic layer 115 side under the resistance of the hydrophobic layer 115, thereby forming the opening 113. When the humidity of the area facing the hydrophilic layer 114 decreases to the closing threshold, the hydrophilic layer 114 discharges the absorbed moisture, and then contracts due to the decrease in the absorbed moisture, thereby gradually returning to the original state. In this way, an adaptive cyclic variation based on humidity is achieved.

The hydrophilic layer 114 may be made of a hydrophilic material having swelling characteristics after absorbing water, such as polyvinyl alcohol, hydrogel, etc. The hydrophobic layer 115 may be made of a hydrophobic material such as polytetrafluoroethylene, polyethylene terephthalate, or the like. In a preferred embodiment, the hydrophobic layer 115 may be made of a styrene-olefin copolymer. Hydrophilic layer 114 may be made from a hydrophilically modified styrene-olefin copolymer (e.g., a styrene-olefin copolymer containing sulfonic acid functional groups grafted thereto) and doped with a specified concentration of a material having post-water swelling properties. By manufacturing the hydrophobic layer 115 and the hydrophilic layer 114 of the variable humidity controlling region 110 using the styrene-olefin copolymer and the hydrophilically modified styrene-olefin copolymer, respectively, the dimensional stability and durability of the humidity sensitive membrane 100 can be improved and the service life can be prolonged.

In a preferred embodiment, the material doped in hydrophilic layer 114 that has post-water swelling properties may be sodium carboxymethyl cellulose (CMC-Na). Sodium carboxymethyl cellulose has good hydrophilicity and hygroscopicity, and absorbs water to expand when the humidity increases, and rapidly discharges the absorbed water when the humidity decreases, so that the hydrophilic layer 114 realizes a cyclic change. The on and off thresholds of humidity sensing membrane 100 can be adjusted by adjusting the sodium carboxymethyl cellulose content of hydrophilic layer 114. Preferably, the content of sodium carboxymethyl cellulose in the hydrophilic layer 114 may be in the range of 5-8% by mass, so that the on threshold of the humidity sensing membrane 100 is in the range of 90% to 100% and the off threshold is in the range of 80% to 90%.

In addition, it is understood that the humidity sensing membrane body 120 may be made of exactly the same material as the deformable humidity conditioning area 110 for convenience of processing. Of course, the humidity sensing membrane body 120 may also be made of a different material than the deformable humidity control area 110, so as to save material cost.

Having described various implementations of the humidity sensing membrane 100 according to embodiments of the present invention, a fruit and vegetable container that utilizes the humidity sensing membrane 100 to achieve adaptive humidity conditioning will be described.

Fig. 3 is a schematic structural view of a fruit and vegetable container 200 according to an embodiment of the present invention. Referring to fig. 3, the fruit and vegetable container 200 may generally include a housing 210 and a humidity sensing membrane 100. The housing 210 has one or more vents 211. The humidity sensitive membrane 100 covers the vent 211 of the fruit and vegetable container 200, and the first surface 111 of the deformable humidity conditioning area 110 faces the interior of the fruit and vegetable container 200. That is, the second surface 112 of the deformable conditioning area 110 faces away from the interior of the fruit and vegetable container 200. The humidity sensing membrane 100 may be fixed at the vent 211 by means of adhesion, clamping, or the like. By covering the humidity sensing film 100 at the vent 211 of the fruit and vegetable container 200, when the humidity in the fruit and vegetable container 200 rises to the opening threshold, the deformable humidity adjusting area 110 of the humidity sensing film 100 is curled towards the outer side of the fruit and vegetable container 200 to form an opening 113, so that the excessive water vapor in the fruit and vegetable container 200 can be efficiently and rapidly discharged through the opening 113, the excessive humidity in the fruit and vegetable container 200 is reduced, the dewing phenomenon is avoided, and the decay of the articles stored in the fruit and vegetable container 200 is prevented. When the humidity in the fruit and vegetable container 200 is reduced to the closing threshold, the deformable humidity-adjusting region 110 of the humidity-sensing membrane 100 will shrink to restore the shape to close the opening 113 to reseal the fruit and vegetable container 200, so that the humidity of the fruit and vegetable container 200 can be maintained at a proper level, thereby realizing an efficient self-adaptive humidity-adjusting function.

Fig. 4 and 5 show an assembled perspective view and an exploded view, respectively, of a fruit and vegetable container 200 according to another embodiment of the present invention.

Referring to fig. 5, in one embodiment, the fruit and vegetable container 200 may further include a support plate 220. The support plate 220 is disposed at the vent 211 of the fruit and vegetable container 200, and the support plate 220 is fixed with the humidity sensing membrane 100 to support the humidity sensing membrane 100. Specifically, the supporting plate 220 may be provided by a fastening manner, for example, a hook is provided at the air vent 211, and a slot corresponding to the hook is provided on the supporting plate 220, so as to fasten the two. The humidity sensing membrane 100 may be fixed to the support plate 220 by means of adhesion, clamping, or the like. For example, glue may be applied to the surface of the support plate 220, and the humidity sensing membrane 100 may be adhered to the support plate 220 by the glue.

The support plate 220 may also have a notch 221 corresponding to the deformable conditioning area 110. The notch 221 of the support plate 220 is configured such that the first surface 111 of the deformable humidity adjustment area 110 absorbs moisture within the fruit and vegetable container 200 through the notch 221 of the support plate 220. The notches 221 may be in a one-to-one correspondence with the deformable humidity-conditioning areas 110, or may be in a manner that one notch 221 corresponds to a plurality of deformable humidity-conditioning areas 110, for example, one notch 221 corresponds to two deformable humidity-conditioning areas 110, which may be selected according to the strength of the humidity-sensing film 100. Preferably, the notches 221 are in one-to-one correspondence with the deformable humidity-conditioning areas 110, so as to provide better support for the humidity-sensing membrane 100 and extend its service life under conditions that ensure moisture permeability.

With continued reference to fig. 5, in one embodiment, the fruit and vegetable container 200 can further include a cover 230. The cover plate 230 is disposed at a side of the second surface 112 of the humidity sensing membrane 100 (i.e., a side facing away from the inside of the fruit and vegetable container 200) and covers the humidity sensing membrane 100, thereby protecting the humidity sensing membrane 100 from scratches of the humidity sensing membrane 100 by foreign objects, etc. The cover 230 may have a plurality of ventilation holes 231 thereon for radiating moisture penetrating from the inside of the fruit and vegetable container 200. The cover 230 and the humidity sensing membrane 100 have a gap therebetween that allows the deformable humidity-conditioning area 110 to curl, thereby providing sufficient space for the deformable humidity-conditioning area 110 to form the opening 113.

In one embodiment, the fruit and vegetable container 200 may also include a support plate 220 and a cover plate 230, where the cover plate 230 may be fastened to the support plate 220 by a snap fit. This manner may provide robust support and effective protection for the humidity sensing membrane 100 while simplifying assembly operations.

In some embodiments, the fruit and vegetable container 200 may be a drawer-type fruit and vegetable box, and the housing 210 is a barrel of a drawer. The vents 211 of the fruit and vegetable container 200 may be provided in any suitable location on the drawer cylinder for venting, such as the rear, side walls, top wall, etc. of the cylinder.

With continued reference to fig. 4 and 5, in one embodiment, the fruit and vegetable container 200 may further include a rack 240 when the vent 211 of the fruit and vegetable container 200 is disposed on the top wall 212 of its barrel. The rack 240 is disposed above the top wall 212 of the cartridge (when the fruit and vegetable container 200 is provided with the cover 230, the rack 240 is disposed above the cover 230), so that the region between the rack 240 and the humidity sensing membrane 100 (or the cover 230) forms a relatively isolated space. The rack 240 has a frame 241 with a ventilation function, so that after the moisture in the fruit and vegetable container 200 enters the relatively isolated space through the opening 113 formed by the deformable debugging area of the humidity sensing film 100, the moisture can be exchanged with the air outside the fruit and vegetable container 200 through the frame 241, thereby enabling the moisture to be quickly moved and dispersed, and avoiding the moisture from staying in the relatively isolated space to influence the moisture permeability.

In the fruit and vegetable container 200 realizing self-adaptive humidity adjustment by utilizing the humidity sensing film 100, the frame 241 with ventilation function is arranged on the rack 240 above the fruit and vegetable container 200, so that after the moisture in the fruit and vegetable container 200 enters the space between the rack 240 and the humidity sensing film 100 through the opening 113 formed by the deformable debugging area of the humidity sensing film 100, the air circulation is realized by exchanging the air outside the fruit and vegetable container 200 through the frame 241, and the moisture permeability is accelerated. Particularly, when the fruit and vegetable container 200 is applied to a refrigerator, the active cool air circulation of the moisture permeated from the inside of the fruit and vegetable container 200 into the refrigerator can be facilitated, thereby remarkably accelerating the moisture permeation rate.

Preferably, the frame 241 may be a frame 241 of a grill structure so as to enhance the ventilation function thereof. In fig. 4, a circulation direction of an air path is schematically shown by side-by-side arrows, and it can be seen that, by providing a frame 241 of a grid structure on the rack 240, moisture penetrating from the fruit and vegetable container 200 can conveniently and rapidly enter the active air circulation along the circulation direction of the air path, thereby significantly accelerating the movement speed of the moisture and further accelerating the moisture permeability.

Based on the same inventive concept, the embodiment of the invention also provides a refrigerator. Fig. 6 is a schematic structural view of a refrigerator 300 according to an embodiment of the present invention. Referring to fig. 6, a refrigerator 300 may include at least a case 310, and a fruit and vegetable container 200 as described in any of the embodiments or combinations of embodiments above. The box 310 defines a storage compartment 320 therein, and the fruit and vegetable container 200 is disposed in the storage compartment 320.

By applying the fruit and vegetable container 200 in the refrigerator 300, self-adaptive humidity regulation in storage of food materials such as fruits and vegetables is realized, and the fresh-keeping effect of the food materials such as fruits and vegetables is improved.

By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (11)

1. A fruit and vegetable container comprising:

a housing having a vent, and

The humidity sensing film covers the air vent of the fruit and vegetable container and is provided with a plurality of deformable humidity-adjusting areas, the deformable humidity-adjusting areas are formed by punching the humidity sensing film, part of edges of the deformable humidity-adjusting areas are integrated with the body of the humidity sensing film, the rest of edges of the deformable humidity-adjusting areas are cut apart from the body of the humidity sensing film, the deformable humidity-adjusting areas are provided with a first surface and a second surface which are opposite, the first surface faces the inside of the fruit and vegetable container, and the humidity-adjusting areas are formed by cutting the humidity-adjusting areas, wherein the parts of edges of the deformable humidity-adjusting areas are integrated with the body of the humidity sensing film, and the rest of edges of the deformable humidity-adjusting areas are cut apart from the body of the humidity sensing film, and the deformable humidity-adjusting areas are provided with the first surface and the second surface which are opposite to the first surface and the first surface faces the inside of the fruit and vegetable container, and the fruit and vegetable container

The first surface is configured to absorb moisture inside the fruit and vegetable container;

Each of the deformable humidity-conditioning areas is configured to undergo an elongated deformation with an increase in the amount of moisture absorbed by the first surface, and when the humidity of the interior of the fruit and vegetable container increases to a first threshold value, the elongated deformation is sufficient to cause the remaining portion of each of the deformable humidity-conditioning areas, excluding the edge integral with the body of the humidity-sensing film, to curl toward the second surface side to form an opening that communicates the interior of the fruit and vegetable container with the second surface side;

Each of the deformable conditioning areas is further configured to resume shape to close the opening as the amount of moisture absorbed by the first surface decreases when the humidity of the interior of the fruit and vegetable container decreases to a second threshold.

2. The fruit and vegetable container according to claim 1, wherein,

The first threshold is in the range of 90% to 100%;

The second threshold is in the range of 80% to 90%.

3. The fruit and vegetable container according to claim 2, wherein,

The first threshold is 95%;

The second threshold is 85%.

4. The fruit and vegetable container according to claim 1, wherein,

The deformable conditioning region includes:

a hydrophilic layer as a first surface of the deformable humidity-conditioning region configured to undergo prolonged deformation with an increase in the amount of absorbed moisture and to recover shape with a decrease in the amount of absorbed moisture, and

And a hydrophobic layer as a second surface of the deformable humidity-conditioning region.

5. The fruit and vegetable container according to claim 4, wherein,

The hydrophilic layer is made of a styrene-olefin copolymer containing sulfonic acid functional groups and sodium carboxymethyl cellulose;

The hydrophobic layer is made of a styrene-olefin copolymer.

6. The fruit and vegetable container according to claim 5, wherein,

The content of sodium carboxymethyl cellulose in the hydrophilic layer is in the range of 5-8% by mass.

7. The fruit and vegetable container according to any one of claims 1-6, wherein the fruit and vegetable container further comprises:

The supporting plate is arranged at the air vent of the fruit and vegetable container and is fixed with the humidity sensing film to support the humidity sensing film;

The support plate also has a notch corresponding to the deformable humidity-conditioning area, the notch of the support plate being configured such that the first surface of the deformable humidity-conditioning area absorbs moisture within the fruit and vegetable container through the notch of the support plate, and/or

The cover plate is provided with a plurality of ventilation holes, the cover plate is arranged on one side of the second surface of the humidity sensing film and covers the humidity sensing film, and a gap allowing the deformable humidity adjusting area to curl is formed between the cover plate and the humidity sensing film.

8. The fruit and vegetable container according to any one of claims 1-6, wherein the fruit and vegetable container is a drawer-type fruit and vegetable box, the housing is a barrel of the drawer, and the vent of the fruit and vegetable container is provided on a top wall of the barrel.

9. The fruit and vegetable container according to claim 8, wherein the fruit and vegetable container further comprises:

a rack arranged above the top wall of the cylinder body and

The rack is provided with a frame with a ventilation function, so that moisture in the fruit and vegetable container enters a space between the rack and the humidity sensing film through an opening formed by a deformable debugging area of the humidity sensing film, and then the moisture is exchanged with air outside the fruit and vegetable container through the frame.

10. The fruit and vegetable container according to claim 9, wherein,

The frame is of a grid structure.

11. A refrigerator, comprising:

A case defining a storage compartment therein, and

The fruit and vegetable container according to any one of claims 1-10, arranged within the storage compartment.