Humidity sensing film, fruit and vegetable container and refrigerator having the same

Abstract

The present invention provides a humidity sensing film, a fruit and vegetable container, and a refrigerator having the same. The humidity sensing film has at least one deformable humidity regulating area, and the deformable humidity regulating area has a first surface and a second surface relative to each other; the first surface is configured to absorb moisture from the area facing the first surface; the deformable humidity regulating area is configured to produce an extended deformation as the amount of moisture absorbed by the first surface increases, and when the humidity of the area facing the first surface increases to a first threshold value, the extended deformation is sufficient to cause the deformable humidity regulating area to curl toward the second surface side to form an opening that connects the area facing the first surface with the second surface side; the deformable humidity regulating area is also configured to restore its shape to close the opening as the amount of moisture absorbed by the first surface decreases when the humidity of the area facing the first surface decreases to a second threshold value. The solution of the present invention can realize a highly efficient adaptive humidity regulating function and improve the freshness-keeping performance of storage space (especially fruit and vegetable containers).

Description

Technical Field

[0001] The invention relates to the technical field of article storage, and in particular to a humidity sensing film, a fruit and vegetable container and a refrigerator having the same. Background Art

[0002] For fresh fruits and vegetables, storing them at a higher humidity is more conducive to keeping them fresh. Therefore, when storing fruits and vegetables, the purpose of high humidity in the storage environment is usually achieved by increasing the sealing of the container. For example, for refrigerators, the high humidity in the fruit and vegetable boxes is usually maintained by improving the sealing of the fruit and vegetable boxes in the refrigerator. However, if too much food is stored in the fruit and vegetable box, the excess water vapor cannot be dissipated, which will cause condensation inside. If more dew comes into contact with the food, it may cause the fruits and vegetables to rot.

[0003] In order to solve the above-mentioned problem of condensation causing fruit and vegetable rot, the prior art uses a moisture permeable film on the cover of the fruit and vegetable box to achieve moisture permeability. This method has the following two disadvantages: (1) The power of the moisture permeable film is the humidity difference. When the difference between the humidity inside the fruit and vegetable box and the humidity outside the box is large, the moisture permeability is fast. When the difference between the humidity inside the fruit and vegetable box and the humidity outside the box is small, the moisture permeability is slow. Therefore, this method of moisture permeation that completely relies on the power of humidity difference cannot ensure that the excess water vapor in the fruit and vegetable box is completely and timely dissipated. (2) Since there is no active gas circulation, the water vapor that penetrates from the fruit and vegetable box will stay in the relatively sealed space between the shelf and the cover of the fruit and vegetable box. The high-humidity water vapor in this space moves slowly to other locations in the refrigerator, so that the relatively high humidity in this space will be maintained for a long time, thereby reducing the difference between the humidity inside the fruit and vegetable box and the humidity outside the box, affecting the moisture permeability speed and efficiency. Summary of the invention

[0004] An object of the present invention is to provide a humidity sensing film which can sense the humidity and change its shape cyclically.

[0005] A further object of the present invention is to provide a fruit and vegetable container that can realize adaptive humidity control by utilizing the property of a humidity sensing film that can sense the humidity and change its shape cyclically.

[0006] A further object of the present invention is to provide a ventilation frame on the shelf above the top wall of the fruit and vegetable container to achieve exchange circulation between moisture from the fruit and vegetable container and external air, thereby accelerating the moisture permeation rate.

[0007] According to one aspect of the present invention, an embodiment of the present invention provides a humidity sensing film having at least one deformable humidity regulating region, and the deformable humidity regulating region has a first surface and a second surface opposite to each other;

[0008] The first surface is configured to absorb moisture from an area facing the first surface;

[0009] The deformable humidity-conditioning region is configured to generate an elongated deformation as the amount of moisture absorbed by the first surface increases, and when the humidity of the area 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 to form an opening that connects the area facing the first surface with the second surface;

[0010] The deformable humidity-regulating region is further configured to restore its shape to close the opening as the amount of moisture absorbed by the first surface decreases when the humidity of the region facing the first surface decreases to a second threshold.

[0011] Optionally, the first threshold is in the range of 90% to 100%;

[0012] The second threshold is in the range of 80% to 90%.

[0013] Optionally, the first threshold is 95%;

[0014] The second threshold is 85%.

[0015] Optionally, the deformable humidity regulating area includes:

[0016] a hydrophilic layer, as a first surface of the deformable humidity regulating region, configured to undergo an elongated deformation as the amount of moisture absorbed increases and to recover its shape as the amount of moisture absorbed decreases; and

[0017] The hydrophobic layer serves as the second surface of the deformable humidity regulating area.

[0018] Optionally, the hydrophilic layer is made of a styrene-olefin copolymer containing sulfonic acid functional groups and sodium carboxymethyl cellulose;

[0019] The hydrophobic layer is made of styrene-olefin copolymer.

[0020] Optionally, the content of sodium carboxymethylcellulose in the hydrophilic layer is in the range of 5-8% by mass.

[0021] According to another aspect of the present invention, an embodiment of the present invention further provides a fruit and vegetable container, comprising:

[0022] a housing having a vent; and

[0023] The humidity sensing film of any of the above items covers the vent of the fruit and vegetable container, and the first surface of the deformable humidity regulating area faces the interior of the fruit and vegetable container.

[0024] Optionally, the fruit and vegetable container further comprises:

[0025] A support plate, which is arranged at the vent of the fruit and vegetable container and is fixed to the humidity sensing membrane to support the humidity sensing membrane;

[0026] The support plate further has a notch corresponding to the deformable humidity-conditioning region, and the notch of the support plate is configured so that the first surface of the deformable humidity-conditioning region absorbs moisture in the fruit and vegetable container through the notch of the support plate; and / or

[0027] The cover plate has a plurality of air holes, is arranged on one side of the second surface of the humidity sensing film and covers the humidity sensing film, and a gap is provided between the cover plate and the humidity sensing film to allow the deformable humidity regulating area to curl.

[0028] Optionally, the fruit and vegetable container is a drawer-type fruit and vegetable box, the shell is a cylinder of the drawer, and the vent of the fruit and vegetable container is arranged on the top wall of the cylinder.

[0029] Optionally, the fruit and vegetable container further comprises:

[0030] A shelf is arranged above the top wall of the cylinder; and

[0031] The shelf has a breathable frame, so that moisture in the fruit and vegetable container enters the space between the shelf and the humidity sensing film through the opening formed by the deformable adjustment area of ​​the humidity sensing film, and then exchanges with the gas outside the fruit and vegetable container through the frame.

[0032] Optionally, the frame is a frame of a grid structure.

[0033] According to yet another aspect of the present invention, an embodiment of the present invention further provides a refrigerator, comprising:

[0034] a box body defining a storage compartment therein; and

[0035] Any of the above fruit and vegetable containers is arranged in a storage room.

[0036] The humidity sensing film of the present invention has at least one deformable humidity regulating region, and the deformable humidity regulating region has a first surface and a second surface opposite to each other, wherein the first surface is configured to absorb moisture from the region facing the first surface, and the deformable humidity regulating region is configured to generate an extended deformation as the amount of moisture absorbed by the first surface increases, and when the humidity of the region facing the first surface increases to a first threshold, the extended deformation is sufficient to cause the deformable humidity regulating region to curl toward the second surface side to form an opening that connects the region facing the first surface with the second surface side. The deformable humidity regulating region is also configured to restore its shape to close the opening as the amount of moisture absorbed by the first surface decreases 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 rises to a first threshold value, the deformable humidity regulating area of ​​the humidity sensing film will curl toward the second surface side to form an opening, so as to efficiently and quickly discharge excess water vapor in the storage space through the opening, reduce the excessive humidity in the storage space, and avoid condensation; and when the humidity in the storage space drops to a second threshold value, the deformable humidity regulating area of ​​the humidity sensing film will shrink to restore its shape to close the opening to reseal the storage space, so that the humidity of the storage space can be maintained at an appropriate level, thereby realizing a highly efficient adaptive humidity regulating function by sensing the humidity and cyclically changing the shape, thereby improving the freshness-keeping performance of the storage space (especially fruit and vegetable containers).

[0037] Furthermore, in a fruit and vegetable container that uses a humidity sensing film to achieve adaptive humidity control, a breathable frame is provided on the shelf above the fruit and vegetable container, so that moisture in the fruit and vegetable container enters the space between the shelf and the humidity sensing film through the opening formed by the deformable adjustment area of ​​the humidity sensing film, and then exchanges gas with the outside of the fruit and vegetable container through the frame to achieve gas circulation. In particular, when the fruit and vegetable container is used in a refrigerator, moisture that penetrates from the fruit and vegetable container can enter the active cold air circulation of the refrigerator, thereby significantly accelerating the moisture permeation speed.

[0038] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0040] Figure 1 is a schematic structural diagram of a humidity sensing film according to an embodiment of the present invention;

[0041] Figure 2 yes Figure 1 Schematic diagram of the deformable humidity-adjusting region of the humidity sensing film in the original state and the rolled state;

[0042] Figure 3 is a schematic structural diagram of a fruit and vegetable container according to an embodiment of the present invention;

[0043] Figure 4 is a three-dimensional schematic diagram of an assembled fruit and vegetable container according to another embodiment of the present invention;

[0044] Figure 5 yes Figure 4 An exploded schematic diagram of the fruit and vegetable container shown;

[0045] Figure 6 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention. DETAILED DESCRIPTION

[0046] In order to solve the above technical problems, the embodiments of the present invention provide a humidity sensing film, a fruit and vegetable container and a refrigerator having the same.

[0047] Figure 1 FIG. 1 is a schematic structural diagram of a humidity sensing film 100 according to an embodiment of the present invention. Figure 1 As shown, the humidity sensing film 100 has at least one deformable humidity regulating region 110, and the deformable humidity regulating region 110 has a first surface 111 and a second surface 112 opposite to each other. The first surface 111 of the deformable humidity regulating region 110 is configured to absorb moisture from the area facing the first surface 111. The deformable humidity regulating region 110 is configured to generate an extended deformation as the amount of moisture absorbed by the first surface 111 increases, and when the humidity of the area facing the first surface 111 increases to a first threshold, the extended deformation is sufficient to cause the deformable humidity regulating region 110 to curl toward the second surface 112 side to form an opening 113 that connects the area facing the first surface 111 with the second surface 112 side. The deformable humidity regulating region 110 is also configured to restore its 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.

[0048] Figure 2 Schematic diagrams of the deformable humidity-adjusting region 110 of the humidity-sensing film 100 according to an embodiment of the present invention in the original state and the curled state are shown, wherein (a) shows the original state of the deformable humidity-adjusting region 110, and (b) shows the curled state of the deformable humidity-adjusting region 110. Figure 1 and Figure 2As shown, the deformable humidity-controlling region 110 is flat in the original state. In the original state, the deformable humidity-controlling region 110 and the flat humidity-sensing membrane body 120 (i.e., the part other than the deformable humidity-controlling region 110) are in the same plane and are tightly combined to form a seal, so that the gas in the area facing the first surface 111 is basically unable to pass through the humidity-sensing membrane 100 and reach the second surface 112 side of the humidity-sensing membrane 100. In the curled state, the deformable humidity-controlling region 110 curls toward the second surface 112 side relative to the humidity-sensing membrane body 120, so that an opening 113 is formed between each deformable humidity-controlling region 110 and the humidity-sensing membrane body 120, and the gas in the area facing the first surface 111 (including the moisture therein) can reach the second surface 112 side of the humidity-sensing membrane 100 through the opening 113.

[0049] Thus, when the humidity sensing film 100 of the embodiment of the present invention is applied to a relatively closed storage space (such as a fruit and vegetable container), when the humidity in the storage space rises to a first threshold value (at this time, the humidity sensing film 100 forms an opening 113, so the first threshold value may be referred to as an opening threshold value), the deformable humidity-adjusting region 110 of the humidity sensing film 100 will curl toward the second surface 112 to form an opening 113, so as to efficiently and quickly discharge excess water vapor in the storage space through the opening 113, reduce the excessive humidity in the storage space, and avoid condensation. When the humidity in the storage space drops to a second threshold value (at this time, the opening 113 is closed, so the second threshold value may be referred to as a closing threshold value), the deformable humidity-adjusting region 110 of the humidity sensing film 100 will shrink to restore the shape so that the opening 113 is closed to reseal the storage space, so that the humidity of the storage space can be maintained at an appropriate level, thereby realizing a highly efficient adaptive humidity-adjusting function by sensing the humidity and cyclically changing the shape, and improving the freshness-keeping performance of the storage space (especially the fruit and vegetable container).

[0050] In some embodiments, the deformable humidity regulating region 110 may be a region obtained by punching the humidity sensing film 100. Figure 1 As shown, part of the edge of the deformable humidity-adjusting region 110 is integrated with the humidity-sensing membrane body 120, while the remaining edge of the deformable humidity-adjusting region 110 is separated from the humidity-sensing membrane body 120 due to punching, so that the deformable humidity-adjusting region 110 can undergo a cyclic change of curling and restoring shape relative to the humidity-sensing membrane body 120. It should be noted that Figure 1 The number and shape of the deformable humidity-adjusting regions 110 shown in the figure are only schematic, and can be selected according to actual application requirements, and the present invention does not limit this. For example, the number of the deformable humidity-adjusting regions 110 can also be set to 3, 4, 8, etc. The shape of the deformable humidity-adjusting region 110 can be rectangular, trapezoidal, triangular, etc.

[0051] In a preferred embodiment, six rectangular areas (particularly preferably square areas) can be punched out on the humidity sensing film 100 as the deformable humidity regulating area 110, one side of each rectangular area is integrated with the humidity sensing film body 120, and the other three sides are separated from the humidity sensing film body 120. By adopting the rectangular deformable humidity regulating area 110, the deformation of the deformable humidity regulating area 110 in the direction of its extension deformation can be made more uniform, ensuring that it senses humidity and deforms to achieve the effect of self-adapting moisture permeability or sealing.

[0052] The first threshold value (opening threshold value) and the second threshold value (closing threshold value) mentioned herein can be adjusted by changing the structure and material of the deformable humidity-adjusting region 110 of the humidity sensing film 100 to meet the needs of practical applications. In a preferred embodiment, the first threshold value can be in the range of 90% to 100%, more preferably 95%; the second threshold value can be in the range of 80% to 90%, more preferably 85%. By reasonably setting the opening threshold value and closing threshold value of the humidity sensing film 100, the humidity sensing film 100 of the embodiment of the present invention can be applied to storage applications of items requiring high humidity (such as fruit and vegetable storage), so that the storage environment can be maintained at a suitable humidity to improve the preservation effect.

[0053] In one embodiment, the deformable humidity regulating area 110 may include a superimposed hydrophilic layer 114 and a hydrophobic layer 115, wherein the hydrophilic layer 114 serves as the first surface 111 of the deformable humidity regulating area 110, and the hydrophobic layer 115 serves as the second surface 112 of the deformable humidity regulating area 110. The hydrophilic layer 114 is configured to produce an elongated deformation as the amount of moisture absorbed increases, and to shrink and restore its shape as the amount of moisture absorbed decreases. In other words, as the humidity in the surrounding environment increases, the amount of moisture absorbed by the hydrophilic layer 114 increases, and its elongated deformation becomes larger and larger. Conversely, the hydrophilic layer 114 will discharge the absorbed moisture and shrink. The hydrophobic layer 115 is insensitive to humidity and moisture, and will resist such deformation when the hydrophilic layer 114 undergoes an elongated deformation. Therefore, when the humidity of the area facing the hydrophilic layer 114 rises to the opening threshold, the elongated deformation of the hydrophilic layer 114 will accumulate to a level sufficient to cause the deformable humidity-adjusting area 110 to curl toward the hydrophobic layer 115 under the resistance of the hydrophobic layer 115, thereby forming an opening 113. When the humidity of the area facing the hydrophilic layer 114 drops to the closing threshold, the hydrophilic layer 114 discharges the absorbed moisture, and then shrinks due to the reduction of absorbed moisture, thereby gradually restoring to the original shape. In this way, an adaptive cyclic change based on humidity is achieved.

[0054] The hydrophilic layer 114 can be made of a hydrophilic material having a property of swelling after absorbing water, such as polyvinyl alcohol, hydrogel, etc. The hydrophobic layer 115 can be made of a hydrophobic material, such as polytetrafluoroethylene, polyethylene terephthalate, etc. In a preferred embodiment, the hydrophobic layer 115 can be made of a styrene-olefin copolymer. The hydrophilic layer 114 can be made of a styrene-olefin copolymer after hydrophilic modification (such as a styrene-olefin copolymer containing a sulfonic acid functional group, wherein the sulfonic acid functional group is grafted onto the styrene-olefin copolymer), and a material having a property of swelling after absorbing water at a specified concentration is doped therein. By respectively using styrene-olefin copolymer and hydrophilically modified styrene-olefin copolymer to manufacture the hydrophobic layer 115 and the hydrophilic layer 114 of the deformable humidity regulating area 110, the dimensional stability and durability of the humidity sensing film 100 can be improved, and the service life can be extended.

[0055] In a preferred embodiment, the material having the property of swelling after absorbing water doped in the hydrophilic layer 114 may be sodium carboxymethyl cellulose (CMC-Na). Sodium carboxymethyl cellulose has good hydrophilicity and hygroscopicity. It absorbs water and swells when the humidity increases, and quickly discharges the absorbed water when the humidity decreases, so that the hydrophilic layer 114 can achieve cyclic changes. By adjusting the content of sodium carboxymethyl cellulose in the hydrophilic layer 114, the opening threshold and the closing threshold of the humidity sensing film 100 can be adjusted. Preferably, the content of sodium carboxymethyl cellulose in the hydrophilic layer 114 can be in the range of 5-8% by mass, so that the opening threshold of the humidity sensing film 100 is in the range of 90% to 100%, and the closing threshold is in the range of 80% to 90%.

[0056] In addition, it is understood that, for the convenience of processing, the humidity sensing film body 120 can be made of the same material as the deformable humidity regulating region 110. Of course, the humidity sensing film body 120 can also be made of a different material from the deformable humidity regulating region 110 to save material costs.

[0057] The above describes various implementations of the humidity sensing film 100 according to the embodiment of the present invention. The following describes how to implement a self-adaptive humidity-controlling fruit and vegetable container using the humidity sensing film 100.

[0058] Figure 3 2 is a schematic diagram of the structure of a fruit and vegetable container 200 according to an embodiment of the present invention. Figure 3As shown, the fruit and vegetable container 200 may generally include a housing 210 and a humidity sensing film 100. The housing 210 has one or more vents 211. The humidity sensing film 100 covers the vents 211 of the fruit and vegetable container 200, and the first surface 111 of the deformable humidity regulating area 110 faces the inside of the fruit and vegetable container 200. In other words, the second surface 112 of the deformable humidity regulating area 110 faces away from the inside of the fruit and vegetable container 200. The humidity sensing film 100 may be fixed to the vents 211 by bonding, clamping, or the like. By covering the vent 211 of the fruit and vegetable container 200 with the humidity sensing film 100, when the humidity in the fruit and vegetable container 200 rises to the opening threshold, the deformable humidity-adjusting region 110 of the humidity sensing film 100 will curl toward the outside of the fruit and vegetable container 200 to form an opening 113, so as to efficiently and quickly discharge the excess water vapor in the fruit and vegetable container 200 through the opening 113, reduce the excessive humidity in the fruit and vegetable container 200, avoid condensation, and prevent the items stored in the fruit and vegetable container 200 from rotting. When the humidity in the fruit and vegetable container 200 drops to the closing threshold, the deformable humidity-adjusting region 110 of the humidity sensing film 100 will shrink to restore its 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 an appropriate level, thereby realizing a highly efficient adaptive humidity-adjusting function.

[0059] Figure 4 and Figure 5 The assembled three-dimensional schematic diagram and the exploded schematic diagram of a fruit and vegetable container 200 according to another embodiment of the present invention are respectively shown.

[0060] Reference Figure 5 As shown, 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 to the humidity sensing film 100 to support the humidity sensing film 100. Specifically, the support plate 220 may be disposed in a snap-fit ​​manner, for example, a snap hook is disposed at the vent 211, and a snap groove corresponding to the snap hook is disposed on the support plate 220, thereby achieving the snap fit of the two. The humidity sensing film 100 may be fixed to the support plate 220 by pasting, clamping, or the like. For example, glue may be coated on the surface of the support plate 220, and the humidity sensing film 100 may be pasted to the support plate 220 by glue.

[0061] The support plate 220 may also have a notch 221 corresponding to the deformable humidity-adjusting region 110. The notch 221 of the support plate 220 is configured so that the first surface 111 of the deformable humidity-adjusting region 110 absorbs moisture in the fruit and vegetable container 200 through the notch 221 of the support plate 220. The notch 221 may correspond to the deformable humidity-adjusting region 110 one-to-one, or one notch 221 may correspond to multiple deformable humidity-adjusting regions 110, such as one notch 221 corresponding to two deformable humidity-adjusting regions 110, which may be selected according to the strength of the humidity-sensing film 100. Preferably, the notch 221 corresponds to the deformable humidity-adjusting region 110 one-to-one, thereby providing better support for the humidity-sensing film 100 while ensuring moisture permeability, thereby extending its service life.

[0062] Continue to refer to Figure 5 As shown, in one embodiment, the fruit and vegetable container 200 may further include a cover plate 230. The cover plate 230 is disposed on one side of the second surface 112 of the humidity sensing film 100 (i.e., the side away from the inside of the fruit and vegetable container 200) and covers the humidity sensing film 100, thereby protecting the humidity sensing film 100 and preventing the humidity sensing film 100 from being scratched by foreign objects. The cover plate 230 may have a plurality of air holes 231 for dissipating moisture from the inside of the fruit and vegetable container 200. There is a gap between the cover plate 230 and the humidity sensing film 100 to allow the deformable humidity regulating area 110 to curl, thereby providing enough space for the deformable humidity regulating area 110 to form an opening 113.

[0063] In one embodiment, the fruit and vegetable container 200 may also include a support plate 220 and a cover plate 230, and the cover plate 230 may be fixed to the support plate 220 by snapping. This method can provide stable support and effective protection for the humidity sensing film 100, while simplifying the assembly operation.

[0064] In some embodiments, the fruit and vegetable container 200 may be a drawer-type fruit and vegetable box, and the housing 210 is a drawer cylinder. The vent 211 of the fruit and vegetable container 200 may be disposed at any suitable position for ventilation on the drawer cylinder, such as the rear, side wall, top wall, etc. of the cylinder.

[0065] Continue to refer to Figure 4 and Figure 5As shown, in one embodiment, when the vent 211 of the fruit and vegetable container 200 is arranged on the top wall 212 of the cylinder, the fruit and vegetable container 200 may further include a shelf 240. The shelf 240 is arranged above the top wall 212 of the cylinder (when the fruit and vegetable container 200 is provided with a cover plate 230, the shelf 240 is arranged above the cover plate 230), so that the area between the shelf 240 and the humidity sensing film 100 (or the cover plate 230) forms a relatively isolated space. The shelf 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 adjustment area of ​​the humidity sensing film 100, it can be exchanged with the gas outside the fruit and vegetable container 200 through the frame 241, so that the moisture is quickly moved and dispersed, and the moisture is prevented from staying in the relatively isolated space and affecting the moisture permeation speed.

[0066] In the fruit and vegetable container 200 that realizes adaptive humidity control by using the humidity sensing film 100, a frame 241 with ventilation function is provided on the shelf 240 above the fruit and vegetable container 200, so that the moisture in the fruit and vegetable container 200 enters the space between the shelf 240 and the humidity sensing film 100 through the opening 113 formed by the deformable adjustment area of ​​the humidity sensing film 100, and then exchanges with the gas outside the fruit and vegetable container 200 through the frame 241 to realize gas circulation and accelerate the moisture permeation speed. In particular, when the fruit and vegetable container 200 is used in a refrigerator, it is convenient for the moisture permeated from the fruit and vegetable container 200 to enter the active cold air circulation of the refrigerator, thereby significantly accelerating the moisture permeation speed.

[0067] Preferably, the frame 241 may be a frame 241 of a grid structure, thereby enhancing its ventilation function. Figure 4 In the figure, the side-by-side arrows schematically show a wind path circulation direction. It can be seen that by providing a frame 241 of a grid structure on the shelf 240, the moisture penetrating from the fruit and vegetable container 200 can enter the active gas circulation conveniently and quickly along the wind path circulation direction, thereby significantly accelerating the movement speed of the moisture and further accelerating the moisture permeation speed.

[0068] Based on the same inventive concept, an embodiment of the present invention further provides a refrigerator. Figure 6 3 is a schematic diagram of a refrigerator 300 according to an embodiment of the present invention. Figure 6 As shown, the refrigerator 300 may include at least a box body 310 and the fruit and vegetable container 200 described in any embodiment or combination of the above embodiments. A storage compartment 320 is defined in the box body 310, and the fruit and vegetable container 200 is arranged in the storage compartment 320.

[0069] By using the fruit and vegetable container 200 in the refrigerator 300, adaptive humidity control in the storage of fruits, vegetables and other food materials is achieved, thereby improving the preservation effect of fruits, vegetables and other food materials.

[0070] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A fruit and vegetable container, comprising: a housing having a vent; as well as A humidity sensing film, the humidity sensing film covers the vent of the fruit and vegetable container, and has a plurality of deformable humidity regulating areas, the deformable humidity regulating areas are formed by punching the humidity sensing film, a portion of the edge of each deformable humidity regulating area is integrated with the body of the humidity sensing film, and the remaining portion of the edge is separated from the body of the humidity sensing film, each deformable humidity regulating area has a first surface and a second surface opposite to each other, and the first surface faces the interior of the fruit and vegetable container, wherein The first surface is configured to absorb moisture inside the fruit and vegetable container; Each of the deformable humidity-conditioning regions is configured to generate an elongated deformation as the amount of moisture absorbed by the first surface increases, and when the humidity inside the fruit and vegetable container increases to a first threshold, the elongated deformation is sufficient to cause the remaining portion of each of the deformable humidity-conditioning regions, except for the edge that is integral with the body of the humidity-sensing film, to curl toward the second surface side, so as to form an opening that connects the interior of the fruit and vegetable container with the second surface side; Each of the deformable humidity-regulating regions is further configured to restore its shape to close the opening as the amount of moisture absorbed by the first surface decreases when the humidity inside the fruit and vegetable container drops 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 humidity-adjusting area comprises: a hydrophilic layer, as a first surface of the deformable humidity regulating region, configured to produce an extended deformation as the amount of absorbed moisture increases and to recover its shape as the amount of absorbed moisture decreases; and The hydrophobic layer serves as the second surface of the deformable humidity regulating area.

5. The fruit and vegetable container according to claim 4, wherein: The hydrophilic layer is made of a styrene-olefin copolymer containing a sulfonic acid functional group and sodium carboxymethyl cellulose; The hydrophobic layer is made of styrene-olefin copolymer.

6. The fruit and vegetable container according to claim 5, wherein: The content of sodium carboxymethylcellulose 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 to 6, wherein: The fruit and vegetable container also includes: A support plate, wherein the support plate is arranged at the vent of the fruit and vegetable container, and the support plate is fixed to the humidity sensing membrane to support the humidity sensing membrane; The support plate further has a notch corresponding to the deformable humidity-conditioning region, and the notch of the support plate is configured so that the first surface of the deformable humidity-conditioning region absorbs moisture in the fruit and vegetable container through the notch of the support plate; and / or The cover plate has a plurality of air holes. The cover plate is arranged on one side of the second surface of the humidity sensing film and covers the humidity sensing film. There is a gap between the cover plate and the humidity sensing film to allow the deformable humidity regulating area to curl.

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

9. The fruit and vegetable container according to claim 8, wherein: The fruit and vegetable container also includes: A shelf is arranged above the top wall of the cylinder; and The shelf has a breathable frame, so that moisture in the fruit and vegetable container enters the space between the shelf and the humidity sensing film through the opening formed by the deformable adjustment area of ​​the humidity sensing film, and then exchanges with the gas outside the fruit and vegetable container through the frame.

10. The fruit and vegetable container according to claim 9, wherein: The frame is a frame of a grid structure.

11. A refrigerator, comprising: A box body, defining a storage compartment therein; as well as The fruit and vegetable container according to any one of claims 1 to 10, arranged in the storage room.

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