CN111322815A

CN111322815A - Preservation box with air conditioning structure and refrigerator

Info

Publication number: CN111322815A
Application number: CN202010202279.7A
Authority: CN
Inventors: 陈佳弘; 皮芳; 刘畅
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2020-06-23

Abstract

The invention discloses a preservation box with an air-conditioning structure and a refrigerator, wherein the preservation box comprises: the box body is provided with a ventilation opening; the air conditioning structure is arranged at the position of the ventilation opening and comprises a plurality of air conditioning pieces, and the air permeability of each air conditioning piece corresponds to different fruits and vegetables; the air adjusting pieces and the ventilation openings can move mutually, and each air adjusting piece can move to a position corresponding to the ventilation opening so as to adjust the air permeability of the ventilation opening. The fresh-keeping box is provided with the air-conditioning structure with the air-conditioning pieces, and the air-conditioning pieces and the ventilation openings can move mutually, so that the air-conditioning pieces with corresponding air permeability can correspond to the ventilation openings according to the types of the preserved fruits and vegetables, the air permeability of the ventilation openings is adjusted to be matched with the types of the preserved fruits and vegetables, the fresh-keeping period of the fruits and vegetables is prolonged, and the application range of the fresh-keeping box is improved.

Description

Preservation box with air conditioning structure and refrigerator

Technical Field

The invention relates to the technical field of refrigerators, in particular to a preservation box with an air-conditioning structure and a refrigerator.

Background

With the improvement of living standard and purchasing power of people, higher requirements are put forward on the variety, quality and edible safety of fresh fruits and vegetables, and the natural quality and edible safety of the fruits and vegetables are required to be maintained to the maximum extent. The refrigerator is used as a terminal of a food refrigeration chain, the quality of the fresh-keeping performance of the refrigerator is directly related to people's life relations, the fresh-keeping effect of the refrigeration chamber of the existing household refrigerator is limited, the fresh-keeping time for fresh vegetables and fruits is short, and the fresh-keeping time is generally not more than one week. Therefore, the research on storing fruits and vegetables in the household refrigerator becomes a research hotspot in the field of preservation along with the promotion of various preservation refrigerators.

The existing fruit and vegetable fresh-keeping box of the refrigerator usually adopts an air-conditioning film to control the humidity in the fruit and vegetable box and prolong the fresh-keeping period of the fruit and vegetable. However, the traditional refrigerator is used for storing fruits and vegetables in the same fruit and vegetable box, the performance of the modified atmosphere film cannot be adjusted, and the fixed modified atmosphere film cannot adapt to the storage conditions of different fruits and vegetables due to the fact that the differences of nutritional ingredients, respiration rates, transpiration strength and suitable storage conditions of different fruits and vegetables are large, so that the application range is small, and the limitation is large.

Disclosure of Invention

The invention discloses a preservation box with an air-conditioning structure and a refrigerator, and solves the problems that a fixed air-conditioning film cannot adapt to the storage conditions of different fruits and vegetables, the application range is small, and the limitation is large.

According to one aspect of the present invention, there is disclosed a fresh food box comprising: the box body is provided with a ventilation opening; the air conditioning structure is arranged at the position of the ventilation opening and comprises a plurality of air conditioning pieces, and the air permeability of each air conditioning piece corresponds to different fruits and vegetables; the air adjusting pieces and the ventilation openings can move mutually, and each air adjusting piece can move to a position corresponding to the ventilation opening so as to adjust the air permeability of the ventilation opening.

Further, the modified atmosphere structure further comprises: and all the air conditioning pieces are movably arranged on the guide structure, and each air conditioning piece is provided with a first position which is displaced to correspond to the ventilation opening and is used for filtering and a second position which is used for avoiding the ventilation opening.

Further, all the air conditioning pieces are switched between the first position and the second position by moving, and when any air conditioning piece is located at the first position, other air conditioning pieces are located at the second position.

Further, the guide structure comprises oppositely arranged guide rails, the guide rails are arranged on the box body, the ventilation openings are located between the guide rails, each air conditioning piece is arranged on the guide rails in a sliding mode, all the air conditioning pieces are arranged in sequence, and each air conditioning piece covers the ventilation openings when moving to the first position.

Further, the modified atmosphere structure further comprises: the shell is arranged on the box body, a plurality of partition plates are arranged in the shell at intervals, the partition plates divide the interior of the shell into a plurality of air-conditioning cavities, air-conditioning ports are formed in the partition plates, and two adjacent air-conditioning cavities are communicated through the air-conditioning ports; along the arrangement direction of the air-conditioning cavities, the air-conditioning cavity at the initial position is communicated with the vent, and the air-conditioning cavity at the tail position is communicated with the outside; the guide structures are multiple, each guide structure is correspondingly arranged in one air conditioning cavity, and each air conditioning piece is correspondingly arranged on one guide structure; when each air conditioning piece moves to the first position, the air conditioning piece covers the corresponding air conditioning opening, and the air conditioning structure is used for adjusting the transmission rates of water vapor, oxygen and carbon dioxide by switching different air conditioning pieces to cover the corresponding air conditioning openings.

Further, each guide structure is a pair of guide rails, each pair of guide rails is oppositely arranged on the same side of the partition board, the air adjusting ports on the partition boards are positioned between the guide rails, and each air adjusting piece is slidably arranged on the guide rails.

Further, one of the air adjusting pieces is moved to the first position and covers the corresponding air adjusting opening; meanwhile, the other air adjusting pieces move to the second position and avoid the corresponding air adjusting openings.

Further, the air permeability includes any one or more of water vapor permeability, oxygen permeability, and carbon dioxide permeability.

Further, the air conditioning piece comprises: and (5) air-conditioning film.

Further, the fresh-keeping box further comprises: the drawer, the drawer sets up in the box body, the drawer is used for holding fruit vegetables.

According to a second aspect of the invention, a refrigerator is disclosed, comprising the crisper.

The fresh-keeping box is provided with the air-conditioning structure with the air-conditioning pieces, and the air-conditioning pieces and the ventilation openings can move mutually, so that the air-conditioning pieces with corresponding air permeability can correspond to the ventilation openings according to the types of the preserved fruits and vegetables, the air permeability of the ventilation openings is adjusted to be matched with the types of the preserved fruits and vegetables, the fresh-keeping period of the fruits and vegetables is prolonged, and the application range of the fresh-keeping box is improved.

Drawings

FIG. 1 is a schematic structural diagram of a crisper according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a modified atmosphere structure according to an embodiment of the invention;

legend: 10. a box body; 11. a vent; 20. an air conditioning structure; 21. air conditioning pieces; 22. a guide structure; 23. a housing; 24. a partition plate; 30. a drawer; 40. a gas regulating cavity; 41. and (5) regulating the air and opening.

Detailed Description

The present invention is further illustrated by the following examples, but is not limited to the details of the description.

As shown in fig. 1, the present invention discloses a fresh keeping box, comprising: the air conditioning structure comprises a box body 10 and an air conditioning structure 20, wherein the box body 10 is provided with a ventilation opening 11; the air conditioning structure 20 is arranged at the position of the ventilation opening 11, the air conditioning structure 20 comprises a plurality of air conditioning pieces 21, and the air permeability of each air conditioning piece 21 corresponds to different fruits and vegetables; the air-conditioning pieces 21 and the ventilation openings 11 are mutually movable, and each air-conditioning piece 21 can be displaced to the position corresponding to the ventilation opening 11 so as to adjust the air permeability passing through the ventilation opening 11. According to the fresh-keeping box, the air conditioning structure 20 with the air conditioning pieces 21 is arranged, the air conditioning pieces 21 and the ventilation openings 11 can move mutually, so that the air conditioning pieces 21 with corresponding air permeability can correspond to the ventilation openings 11 according to the types of the preserved fruits and vegetables, the air permeability of the ventilation openings 11 is adjusted to be matched with the types of the preserved fruits and vegetables, the fresh-keeping period of the fruits and vegetables is prolonged, and the application range of the fresh-keeping box is widened.

In the above embodiment, the modified atmosphere structure 20 further includes: and the guide structure 22, all the air adjusting pieces 21 are movably arranged on the guide structure 22, and each air adjusting piece 21 is provided with a first position which is displaced to the corresponding ventilation opening 11 and is used for filtering and a second position which is used for avoiding the ventilation opening 11. According to the preservation box, the guide structure 22 is arranged, so that the air conditioning piece 21 can be movably arranged on the guide structure 22, the air conditioning piece 21 has the first position and the second position, and the air permeability is adjusted.

In the above embodiment, all the air conditioners 21 are switched between the first position and the second position by moving, and when any one of the air conditioners 21 is located at the first position, the other air conditioners 21 are located at the second position. The air-conditioning piece 21 is switched between the first position and the second position, so that the air permeability of the preservation box is adjusted, fruits and vegetables can be stored in a classified mode according to the storage characteristics of the fruits and vegetables, for example, the fruits and vegetables are classified into four types including general types, fungi types, leaf vegetables and fruits, the air-conditioning piece 21 with the appropriate air permeability is determined according to the characteristics of various fruits and vegetables, a user can select corresponding gears according to the requirements, and the application range of the preservation box is greatly expanded.

In the above embodiment, the guiding structure 22 comprises oppositely arranged guide rails, the guide rails are installed on the box body 10, the ventilation openings 11 are positioned between the guide rails, each air conditioning piece 21 is slidably arranged on the guide rails, all the air conditioning pieces 21 are connected in turn, and each air conditioning piece 21 covers the ventilation opening 11 when being moved to the first position. According to the preservation box, the plurality of air conditioning pieces 21 are arranged on the same guide structure 22, and all the air conditioning pieces 21 are sequentially connected to form an integral air conditioning piece group, so that when the preservation box is used, only the whole air conditioning piece group needs to be moved, and the corresponding air conditioning pieces 21 are covered on the ventilation opening 11, and the preservation box is very convenient to operate.

As shown in fig. 2, in another embodiment, the modified atmosphere structure 20 further comprises: the shell 23 is arranged on the box body 10, a plurality of partition plates 24 are arranged in the shell 23 at intervals, the partition plates 24 divide the interior of the shell 23 into a plurality of air-conditioning cavities 40, air-conditioning ports 41 are formed in the partition plates 24, and two adjacent air-conditioning cavities 40 are communicated through the air-conditioning ports 41; along the arrangement direction of the atmosphere control chambers 40, wherein the atmosphere control chamber 40 at the initial position is communicated with the vent 11, and the atmosphere control chamber 40 at the tail position is communicated with the outside; the number of the guide structures 22 is multiple, each guide structure 22 is correspondingly arranged in one air-conditioning cavity 40, and each air-conditioning piece 21 is correspondingly arranged on one guide structure 22; when each air conditioning piece 21 is moved to the first position, the air conditioning structure 20 covers the corresponding air conditioning opening 41, and the air conditioning structure 21 is switched to cover the corresponding air conditioning opening 41, so as to adjust the permeability of water vapor, oxygen and carbon dioxide. The fresh-keeping box of the invention is provided with the shell 23 with the structure, so that each air-conditioning cavity 40 can be respectively provided with one guide structure 22 and one air-conditioning piece 21, and each air-conditioning port 41 can be independently adjusted, when in use, only the air-conditioning piece 21 with proper air permeability is determined according to the characteristics of various fruits and vegetables, and the proper air-conditioning piece 21 is covered on the corresponding air-conditioning port 41, so that the air in the fresh-keeping box is adjusted, the fresh-keeping time of the fruits and vegetables is optimally prolonged, and the application range of the fresh-keeping box is greatly improved.

In the above embodiment, each guide structure 22 is a pair of guide rails, each pair of guide rails is oppositely disposed on the same side of the partition 24, the air adjusting ports 41 on the partition 24 are located between the guide rails, and each air adjusting member 21 is slidably disposed on the guide rails. The preservation box of the invention can facilitate the movement of the air adjusting piece 21 by arranging the guide rail, and is more convenient and faster to operate.

In the above embodiment, one of the air-conditioning pieces 21 is moved to the first position, covering the corresponding air-conditioning opening 41; at the same time, the other air-conditioning pieces 21 are displaced to the second position and escape from the corresponding air-conditioning vents 41. According to the preservation box, one air conditioning piece 21 is moved to the first position and is arranged on the corresponding air conditioning opening 41, and the other air conditioning pieces 21 are moved to the second position and avoid the corresponding air conditioning openings 41, so that only one air conditioning piece 21 acts at a uniform time, mutual interference is avoided, and the reliability in the use process is improved.

In the above embodiment, the fresh food box further comprises: and the drawer 30 is arranged in the box body 10, and the drawer 30 is used for accommodating fruits and vegetables. The preservation box of the invention is convenient for storing and taking fruits and vegetables by arranging the drawer 30.

In the above embodiment, the air conditioning piece 21 includes: and (5) air-conditioning film. And selecting the air-conditioning film with proper air permeability aiming at different fruit and vegetable types, wherein the air permeability comprises any one or more of water vapor air permeability, oxygen air permeability and carbon dioxide air permeability.

Taking experimental data as an example, a user selects the type of fruits and vegetables to be stored in the fruit and vegetable box according to needs to perform targeted classified storage, and the general classification is generally divided into four categories, namely general categories, fungi categories, leafy vegetables and fruits, so that the air conditioning piece 21 can be divided into a none air conditioning piece, a first air conditioning piece, a second air conditioning piece and a third air conditioning piece, and each category corresponds to different air conditioning films. The gear selection of fruit and vegetable classified storage is shown in table 1:

TABLE 1 grading of fruits and vegetables

The respiration intensity, evapotranspiration and suitable humidity of each grade of fruit and vegetable at 5 ℃ are shown in the following table 2.

TABLE 2 fruit and vegetable classification basis and suitable storage humidity

(1) Determination of moisture permeability of modified atmosphere film

Aiming at the data, various fruits and vegetables with strong breathing intensity and evapotranspiration are selected from the three types of fruits and vegetables to serve as experimental samples, and the moisture permeability of the modified atmosphere film is determined. The selection of the experimental sample refers to table 3, the size of the evapotranspiration of the experimental sample is related to the specific surface area of the fruits and vegetables, and the larger the specific surface area is, the faster the evapotranspiration and water loss of the fruits and vegetables are. And testing the evapotranspiration water loss of different fruits and vegetables, so as to calculate the moisture permeability of the modified atmosphere films of different kinds of fruits and vegetables.

TABLE 3 specific surface area of different fruits and vegetables

The results are shown in Table 4, in which the following equations 1 and 2 exist:

equation 1: m ═ R ═ S ═ V1/T

M-air-conditioned membrane moisture permeability (g/24h)

R-moisture permeability of air-conditioned film R (g/cm2 x 24h)

Area ratio (cm) of S-fruit and vegetable box air-conditioned membrane²/L)

V-box volume V₁(L)

T-storage time (h)

Equation 2: m ═ ρ × V₂*w/T

m-evapotranspiration water loss (g/24h)

Rho-fruit and vegetable Density (g/L)

V_2-Fruit and vegetable volume (L)

w-average weight loss ratio of fruit and vegetable w (%)

T-storage time (T)

When M is larger than M, the humidity in the fruit and vegetable box can be reduced, and the water loss of the fruits and vegetables can be accelerated when the humidity is too low; when M is approximately equal to M, the humidity in the box is kept relatively stable, and the fruits and vegetables are easy to store; when M is less than M, the humidity in the box can be increased to more than 98%, condensation is generated in the box, and the fruits and vegetables are easy to rot due to excessive condensation. When M ═ M, formula 3 exists: r ═ V (ρ × V)₂*w)/(S*V₁) And calculating the moisture permeability of the modified atmosphere film according to a formula 3.

TABLE 4 specific surface area of different fruits and vegetables

Note: table 4 shows that the volume of the fruit and vegetable box is 7.3L, and the air-conditioned film performance (moisture permeability is 0.01 g/cm)²·24h；O₂Transmittance of light5600cm²/m²*24h*0.1Mpa；CO₂Transmittance of 8400cm²/m²24h 0.1Mpa), storage time 1d, storage temperature 5 ℃.

The moisture permeability of the air-conditioned film of fungi is 1742.92-2278.18 g/m²24h, the moisture permeability of the modified atmosphere film of the leaf vegetables is 311.65-1050.00 g/m²24h, the moisture permeability of the fruit air-conditioning film is 130-316.36 g/m²24 h. According to the data, the appropriate moisture permeability of different types of fruits and vegetables can be further determined, the accuracy of the formula 3 is verified, and the test method is shown in table 5.

TABLE 5 moisture permeability Classification of modified atmosphere films

TABLE 6 Experimental sample data

Note: the volume of the fruit and vegetable box is 7.3L, and the membrane area is 300cm²The fruit and vegetable storage time is 1d, and the storage temperature is 5 ℃ in 3/4 boxes. The general test categories are: mixing oyster mushroom, Chinese cabbage, strawberry, grape and white radish; the fungus test species are: oyster mushroom, phoenix mushroom, and needle mushroom; the leaf vegetable test types are as follows: spinach, Chinese cabbage, leaf lettuce, cabbage heart, baby cabbage; the fruit type test types are as follows: grapes, passion fruits, strawberries, mangoes, apples and pears; the tuber type test types are as follows: white radish, red radish and potato. And (5) testing to obtain the average weight loss rate and the monitoring humidity.

The modified atmosphere films suitable for various fruits and vegetables can be screened from the experimental data. The fruit is suitable for modified atmosphere films No. 1 and No. 2, i.e. modified atmosphere films No. 1 and No. 2 for the third modified atmosphere part, the leaf vegetables are suitable for modified atmosphere films No. 3 and No. 4 for the second modified atmosphere part, i.e. modified atmosphere films No. 3 and No. 4 for the second modified atmosphere part, and the fungus is suitable for modified atmosphere film No. 5, i.e. the first modified atmosphere partThe air adjusting piece adopts an air adjusting film No. 5. Moisture permeability and air permeability parameters suitable for grading of fruits and vegetables are comprehensively screened, and the performance parameters of the air-conditioned film are shown in a table 7. The actual test conclusion is similar to that according to equation 3: r ═ V (ρ × V)₂*w)/(S*V₁) The results of the calculations are consistent.

TABLE 7 moisture permeability parameters of modified atmosphere films

(2) Determination of oxygen permeability and carbon dioxide permeability of modified atmosphere film

The oxygen and carbon dioxide transmission rates of the modified atmosphere films are shown in Table 8, and the O of the selected fruits₂A transmittance of 500 to 1000mL/m²·24h，CO₂A transmittance of 1500 to 2500mL/m²24 h; leaf vegetable O₂A transmittance of 500 to 100mL/m²·24h，CO₂A transmittance of 1500 to 2500mL/m²24 h; o of fungi₂A transmittance of 5400-10000 mL/m²·24h，CO₂Transmittance of 8400-15000 mL/m²·24h。

TABLE 8 modified atmosphere film oxygen and carbon dioxide transmission

In conclusion, the moisture permeability and the O of the air conditioning piece suitable for different kinds of fruits and vegetables can be screened out in the above mode₂Transmittance, CO₂The transmittance can derive the air-conditioning structural parts aiming at specific fruits and vegetables, such as strawberries, cherries and the like, and the air-conditioning structural parts are replaced and selected according to actual requirements.

TABLE 8 energy parameters of modified atmosphere films

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes and modifications which are obvious to the technical scheme of the invention are covered by the protection scope of the invention.

Claims

1. A crisper, comprising:

the box body (10), the box body (10) is provided with a ventilation opening (11);

the air conditioning structure (20), the air conditioning structure (20) is arranged at the position of the ventilation opening (11), the air conditioning structure (20) comprises a plurality of air conditioning pieces (21), and the air permeability of each air conditioning piece (21) corresponds to different fruits and vegetables; the air adjusting pieces (21) and the ventilation openings (11) are mutually movable, and each air adjusting piece (21) can be displaced to the position corresponding to the ventilation opening (11) so as to adjust the air permeability of the ventilation openings (11).

2. The crisper of claim 1, wherein the modified atmosphere structure (20) further comprises:

the air adjusting pieces (21) are movably arranged on the guide structure (22), and each air adjusting piece (21) is provided with a first position and a second position, wherein the first position corresponds to the ventilation opening (11) and is used for filtering, and the second position is used for avoiding the ventilation opening (11).

3. The crisper of claim 2,

all the air conditioning pieces (21) are switched between the first position and the second position by moving, and when any air conditioning piece (21) is located at the first position, the other air conditioning pieces (21) are located at the second position.

4. The crisper of claim 3,

the guide structure (22) comprises oppositely arranged guide rails, the guide rails are arranged on the box body (10), the ventilation openings (11) are located between the guide rails, each air conditioning piece (21) is arranged on the guide rails in a sliding mode, all the air conditioning pieces (21) are sequentially arranged, and each air conditioning piece (21) covers the ventilation openings (11) when moving to the first position.

5. The crisper of claim 2, wherein the modified atmosphere structure (20) further comprises:

the air conditioning box comprises a shell (23), wherein the shell (23) is arranged on the box body (10), a plurality of partition plates (24) are arranged in the shell (23) at intervals, the partition plates (24) divide the interior of the shell (23) into a plurality of air conditioning cavities (40), air conditioning ports (41) are formed in the partition plates (24), and two adjacent air conditioning cavities (40) are communicated through the air conditioning ports (41);

along the arrangement direction of the air-conditioning cavities (40), wherein the air-conditioning cavity (40) at the initial position is communicated with the ventilation opening (11), and the air-conditioning cavity (40) at the tail position is communicated with the outside;

the number of the guide structures (22) is multiple, each guide structure (22) is correspondingly arranged in one air-conditioning cavity (40), and each air-conditioning piece (21) is correspondingly arranged on one guide structure (22); when each air conditioning piece (21) moves to the first position, the air conditioning piece covers the corresponding air conditioning opening (41), and the air conditioning structure (20) adjusts the transmission rate of water vapor, oxygen and carbon dioxide by switching different air conditioning pieces (21) to cover the corresponding air conditioning openings (41).

6. The crisper of claim 5,

each guide structure (22) is a pair of guide rails, each pair of guide rails is oppositely arranged on the same side of the partition plate (24), the air adjusting port (41) on the partition plate (24) is positioned between the guide rails, and each air adjusting piece (21) is arranged on the guide rails in a sliding mode.

7. The crisper of claim 5,

one air adjusting piece (21) is displaced to a first position and covers the corresponding air adjusting opening (41); meanwhile, the other air adjusting pieces (21) are displaced to the second position and avoid the corresponding air adjusting openings (41).

8. The crisper of claim 1,

the air permeability comprises any one or more of water vapor permeability, oxygen permeability and carbon dioxide permeability.

9. The crisper of claim 1,

the air conditioning piece (21) comprises: and (5) air-conditioning film.

10. The crisper of claim 1, further comprising:

the drawer (30), drawer (30) set up in box body (10), drawer (30) are used for holding fruit vegetables.

11. A refrigerator characterized by comprising the crisper of any of claims 1 to 10.