KR20130076023A - Humidity control panel for control humidity of the inside of refrigerator and crisper having the humidity control panel and refrigerator having the crisper - Google Patents

Abstract

PURPOSE: A moisture controlling plate for controlling internal moisture of a refrigerator, a vegetable container including the same, and a refrigerator equipped with the vegetable container are provided to prevent decomposition and bad smell of vegetables by continuously circulating the air to prevent still moisture inside a vegetable container. CONSTITUTION: A moisture controlling plate for controlling internal moisture of a refrigerator comprises a porous ceramic material and an inorganic binder which is a matrix material. The moisture controlling plate for controlling internal moisture of a refrigerator is distributed with air holes which have 1nm to 20nm of diameters inside. The porous ceramic substance is one selected among boehmite, active alumina, gamma alumina, diatomite, volcanic clay, allophane, and zeolite.

Description

Humidity control panel for humidity control inside the refrigerator and a vegetable box having the same and a refrigerator having the vegetable box {Humidity control panel for control humidity of the inside of refrigerator and crisper having the humidity control panel and refrigerator having the crisper}

The present invention relates to a humidity control plate for controlling humidity inside a refrigerator, a vegetable box having the same, and a refrigerator provided with the vegetable box.

BACKGROUND OF THE INVENTION A refrigerator widely used in a general home, an office, a restaurant, and the like has a freezer compartment for freezing frozen food and a cold compartment for freezing food and the like without freezing. In addition, the lower side of the refrigerator compartment is provided with a vegetable box. The vegetable box is a vegetable compartment for storing various vegetables or fruits separately, and receives the cold air from the refrigerating chamber from above to maintain the cold inside.

By the way, since the conventional refrigerator has the principle of refrigeration of vegetables only by taking in the cold air of the refrigerating chamber, there is a limit in that vegetables and fruits cannot be stored for a long time. In other words, the vegetables or fruits contained in the vegetable box is in direct contact with the cold air, moisture is rapidly evaporated and drying occurs, the freshness of the vegetable is greatly reduced.

In order to solve the above-mentioned problem, in recent years, a grid-shaped groove is formed on the bottom of the top of the vegetable box, so that water particles generated in the vegetable are temporarily adsorbed to the grid-shaped groove and then gradually dampened to prevent a sudden decrease in moisture. The so-called magic crisper technology is proposed.

In addition, in the case of a vacuum-sealed vegetable box, the sealing force and the magic crisper technology can be added to maintain the humidity inside the vegetable box for a long time, but due to the nature of the sealed chamber itself, the internal air cannot be circulated, causing stagnation or corruption do.

On the other hand, as described above, unlike the attempt to control the humidity by changing the structure of the vegetable box itself, there has also been attempted to increase the humidity of the refrigerator compartment and the vegetable compartment by re-moisturizing the moisture implanted in the freezer inside the refrigerator compartment. . However, such a technique is used to humidify the water formed on the surface of the refrigerator and used for humidification, so that not only there is a hygiene problem but also a power consumption rises.

In addition to the above method, a method of spraying water particles directly inside the vegetable box is also proposed, but this situation is only proposed as a problem of power consumption.

After all, as described above, the conventional refrigerator does not have a clear means for effectively controlling the internal humidity of the vegetable box without power consumption, the long-term storage performance of the vegetable box is not good.

The present invention was created in order to solve the above problems, it is possible to maintain the freshness of vegetables or fruits for a long time by maintaining the internal humidity of the vegetable box without additional increase in power consumption, and also because the air inside the vegetable box is continuously circulated It is an object of the present invention to provide a humidification plate for controlling moisture inside a refrigerator that does not have a stagnation of moisture and does not cause odor, and a vegetable box having the same and a refrigerator provided with the vegetable box.

Humidification plate for moisture control inside the refrigerator of the present invention for achieving the above object, to adjust the humidity around the state mounted on the inside of the refrigerator, including a porous ceramic material, a matrix material and an inorganic binder, the inside It is characterized in that the pores having a diameter of 1nm to 20nm in the distribution.

In addition, the porous ceramic material; Boehmite, activated alumina, gamma alumina, diatomaceous earth, volcanic clay, allophene, zeolite, and the matrix material is any one selected from clay, kaolin, ocher, and clay, and the inorganic binder is a glass powder or Characterized in that any one of the frit (frit) powder.

In addition, the porous ceramic material mixed in the inside of the humidity plate, characterized in that 1wt% to 40wt% relative to the total weight of the humidity plate.

In addition, the humidity control pad is characterized in that the porous ceramic material, the matrix material, the inorganic binder is wet kneaded, then dried and press-molded, and heated for 5 to 30 minutes at 800 ℃ to 1000 ℃.

In addition, aluminum hydroxide is used as a source material of the boehmite, activated alumina and gamma alumina.

In addition, the vegetable box having a humidity control plate of the present invention for achieving the above object, which is installed in the refrigerator compartment of the refrigerator and accommodates vegetables therein, in the inside of the vegetable box, a porous ceramic material, the matrix It comprises a material and an inorganic binder, characterized in that the humidity control plate inside the refrigerator provided with pores having a diameter of 1nm to 20nm is distributed therein.

In addition, the porous ceramic material in the humidity plate is characterized in that any one selected from gamma alumina, diatomaceous earth, volcanic clay, allophene, zeolite.

In addition, the matrix material in the humidity plate, characterized in that any one selected from clay, kaolin, ocher, clay.

In addition, the inorganic binder in the humidity control plate is characterized in that either glass powder or frit powder.

In addition, the porous ceramic material mixed in the inside of the humidity plate, characterized in that 1wt% to 40wt% relative to the total weight of the humidity plate.

In addition, the humidity control pad is wet, kneaded the porous ceramic material, the matrix material, the inorganic binder, and dried and press-molded, characterized in that produced by heating for 5 to 30 minutes at 800 ℃ to 1000 ℃ do.

In addition, the vegetable box; It provides an inner space for storing vegetables and has a drawer portion open to the top, the humidity control plate is characterized in that it is disposed on the inner wall surface of the drawer portion.

In addition, the vegetable box; A drawer part which provides an inner space for storing vegetables and is opened to the upper part, and an upper plate part which covers the upper part of the drawer part, and at the bottom of the upper plate part, the passage is accommodated in the drawer part and the passage is opened into the drawer part. It characterized in that the storage tray having a.

In addition, the storage tray is pin-connected to the bottom surface of the upper plate portion can be rotated up and down, it is characterized in that it rotates downward in the state of pulling out the drawer portion.

In addition, the refrigerator of the present invention for achieving the above object is a vegetable box including a porous ceramic material, a matrix material and an inorganic binder, and a humidity control pad for moisture control in which pores having a diameter of 1 nm to 20 nm are distributed therein. Characterized in having a.

Humidification plate for humidity control and a vegetable box inside the refrigerator of the present invention made as described above, by maintaining the internal humidity of the vegetable box optimally without further increasing the power consumption can maintain the freshness of vegetables or fruits for a long time, and also the vegetable box As the air inside is continuously circulated, there is no stagnation of moisture, so there is no decay of vegetables and no odor.

1 is a partially cutaway perspective view illustrating an exploded view of a humidity control plate and a storage pocket for controlling moisture inside a refrigerator according to an embodiment of the present invention.
Figure 2 is a view showing a state in which the damping plate is fitted to the storage pocket shown in FIG.
Figure 3 is a side cross-sectional view showing a vegetable box having a humidity control plate for humidity control in the refrigerator according to an embodiment of the present invention.
4 is an exploded perspective view showing a part of the vegetable box shown in FIG.
Figure 5 is a view showing for explaining a method of replacing the damping plate in the vegetable box shown in FIG.
Figure 6 is a perspective view showing another example of a vegetable box having a humidity control plate for humidity control in the refrigerator according to an embodiment of the present invention.
7 is a view showing a refrigerator provided with a vegetable box shown in FIG.
8 is a flow chart briefly shown for explaining the manufacturing method of the humidity control plate shown in FIG.
9 is a graph showing the humidity change inside the vegetable box when the humidity control plate for humidity control in the refrigerator according to an embodiment of the present invention.
FIG. 10 is a graph showing the change in humidity of a general vegetable box as compared to the graph shown in FIG. 9.

Hereinafter, one embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a partially cutaway perspective view illustrating an exploded view of a humidity control plate and a storage pocket for controlling moisture inside a refrigerator according to an embodiment of the present invention. Humidification plate 11 to be described below corresponds to the above-mentioned porous ceramic element.

As shown, the humidity plate 11 according to the present embodiment takes the form of a square plate having a predetermined thickness. In particular, the humidity plate 11 has pores having a diameter of 1nm to 20nm therein. A method of forming and distributing pores in the inside of the humidity plate 11 will be described later. As described above, the pores serve to adjust or maintain the surrounding humidity by absorbing or dampening the surrounding moisture.

For reference, according to the experiments of the present inventors, by adjusting the pore size inside the porous ceramic device to 2 nm or less, the relative humidity of the atmosphere can be maintained at 50% or less, and when adjusted to about 5 nm, the relative humidity of the atmosphere is around 70%. It can be seen that the relative humidity can be maintained at about 90% by adjusting to about 10nm. In this way, the relative humidity is controlled according to the size of the pores, so that the pore size can be adjusted to suit the desired purpose.

In the actual refrigerator, since the storage efficiency of the vegetable is maintained the highest when the relative humidity of the vegetable room is 70% to 90%, the preferred pore size in the ceramic device is preferably about 5nm to 10nm.

The humidity control plate 11 is mounted in the vegetable box (15 of FIG. 3) installed in the vegetable room 50 of the refrigerator (21 of FIG. 7), and serves to maintain and control the humidity inside the vegetable box constantly. do.

The humidity plate 11 is a porous ceramic material (boehmite, active alumina, gamma alumina, diatomaceous earth, volcanic clay, allophene, zeolite) that provides nanopores, and matrix material (clay, kaolin, ocher, clay) And inorganic binder (either glass powder or frit powder) are mixed and compression molded and heated under a certain condition.

First, a method of manufacturing the humidity control plate 11 will be described with reference to FIG. 8.

8 is a flow chart briefly shown for explaining the manufacturing method of the humidity plate (11). Basically, the fabrication of the porous damping plate 11 may be manufactured according to general ceramic processing.

First, after determining the manufacturing cost, the physical strength and the composition ratio optimizing the humidity control, the porous ceramic material 100, the matrix material 102 and the inorganic binder 104 is wet kneaded by using a ball mill (wet kneading step). (S110)). At this time, the porous ceramic material 100 is set to 1 to 40% by weight relative to the total weight%.

After the wet kneading step S110 is completed, the drying step S111 is performed. The drying step (S111) is known spray drying (spray drying), that is, spray drying method is applied.

When a mixture of a dry and uniformly mixed state is obtained through the drying step (S111), the mixture is molded into a plate through a dry press molding step (S112). The press molding step (S112) is a step of making the mixture of the powder state into a rectangular or square structure having a predetermined thickness. For example, it may be made of a plate-shaped structure 300 mm wide and 7 mm thick.

If the plate-like structure is molded through the above process, the heating step S114 is performed to reinforce the strength of the molding and to adjust the size of the internal pores. The heating step (S114) is a step of heat-treating the plate-like structure at a temperature of 800 ℃ to 1000 ℃ for 5 to 30 minutes.

Meanwhile, instead of using gamma alumina as the porous ceramic material 100, manufacturing cost may be greatly reduced by using aluminum hydroxide (Al (OH) 3, aluminum tri hydroxide, ATH) which is a raw material of gamma alumina. This is because the aluminum hydroxide phase changes to gamma alumina at a temperature of 800 ℃ to 1000 ℃.

Through the heating step S114, the humidity plate 11 shown in FIG. 1 is obtained.

Referring back to FIG. 1, it can be seen that the humidity plate 11 takes the form of a square plate having a predetermined thickness. The size of the humidity control plate 11 is naturally different depending on the model of the refrigerator, for example, a width of 300 mm may be manufactured to a thickness of 10 mm or less.

On the other hand, the humidity control plate 11 may be used alone, or may be used together with the storage pocket 13. The storage pocket 13 is a case that accommodates the humidity plate 11 in the space portion 13a to protect the humidity plate 11 from external impact. For the protection performance, the storage pocket 13 may be made of elastic synthetic resin. Reference numeral 13b denotes a through hole. The through hole 13b is a passage for opening the humidity plate 11 into the inner space of the vegetable box. Of course, the shape and area of the through hole 13b may vary depending on the case.

Figure 2 is a view showing a state in which the damping plate is fitted to the storage pocket shown in FIG.

As shown, the humidity control plate 11 is accommodated in the storage pocket 13. The humidity control plate 11 is exposed to the outside through the through hole 13b to absorb moisture from the surroundings or the moisture of the internal pores through the through hole 13b. The humidity control plate 11 is mounted to the vegetable box in a state accommodated in the storage pocket 13 as described above.

3 is a side sectional view showing a vegetable box 15 to which a humidity control plate 11 for controlling humidity inside a refrigerator according to an embodiment of the present invention is applied, and FIG. 4 shows a part of the vegetable box shown in FIG. 3. It is an exploded perspective view which shows the extract.

As shown, the vegetable box 15 according to the present embodiment, which is installed in the vegetable compartment 50 provided in the refrigerator 21 (21 of FIG. 7), provides an internal space 15c and is opened upward. A drawer portion 15a which can be pulled out or pushed out of the vegetable compartment 50 as if it were a drawer, a top plate portion 15b disposed horizontally on the upper portion of the drawer portion 15a and covering the upper portion of the drawer portion 15a; The storage tray 15e is provided on the bottom of the upper plate portion 15b so as to be rotatable vertically.

Inside the storage tray 15e, a storage pocket 13 in which the humidity control plate 11 is accommodated is fitted. In some cases, only the humidity control plate 11 may be inserted without the storage pocket 13.

The storage tray 15e has a passage 15k formed at the center thereof, and is formed on a bottom plate 15g that supports the humidity control plate 11, and is perpendicular to three surfaces of the bottom plate 15g. It consists of the side wall 15h which supports the side of 11). The passage 15k is a passage that opens the humidity control plate 11 to the inner space 15c. Of course, the size or shape of the passage 15k may vary depending on the case.

As the passage 15k is formed in the storage tray 15e as described above, moisture inside the drawer 15a may enter the humidity control plate 11, and moisture remaining in the pores inside the humidity control plate is stored in the internal space 15c. You can increase the humidity inside the vegetable box by descending to).

In addition, pinholes 15f are formed on both sides of the rear end of the storage tray 15e, and the pinhole 15f is fitted inside the upper plate portion 15b to rotatably support the storage tray 15e. The support pin 15d is formed. The storage tray 15e can be lowered in the direction of arrow a of FIG. 5 while being supported by the support pin 15d.

The storage tray 15e is supported at the upper end of the drawer portion 15a to be horizontal. Since the drawer unit 15a is rarely taken out completely when the refrigerator is used, the storage tray 15e is always supported by the drawer unit 15a so as not to fall into the inner space 15c. However, if necessary, for example, to replace the humidity control plate 11, as shown in FIG. 5, the drawer 15a is completely removed and the storage tray 15e falls down.

5 is a view for explaining a method of replacing the humidity plate 11 in the vegetable box shown in FIG.

As shown in the drawing, when the drawer 15a is completely removed from the vegetable chamber 50 in the direction of the arrow z, the storage tray 15e supported by the drawer 15a is no longer supported by the drawer 15a. Do not turn down. In this state, the humidity plate 11 is exposed in a state fitted to the receiving pocket 13, so that the humidity plate 11 can be replaced.

Figure 6 is a perspective view showing another example of a vegetable box having a humidity control plate for humidity control in the refrigerator according to an embodiment of the present invention.

As shown, in the vegetable box 15 according to another example, the humidity control plate 11 is spread on both inner wall surfaces of the drawer portion 15a. To this end, two hooks 17 are provided at the upper end of the storage pocket 13. The hook 17 is a member coupled to the upper end of the storage pocket 13, and is hooked to both upper ends of the wall surface 15m to hold the humidity control plate 11 in close contact with the inner space 15c.

In some cases, the storage pocket 13 may be erected or laid on the bottom of the drawer unit 15a without hanging through the hook 17.

FIG. 7 is a view illustrating the refrigerator 21 having the vegetable box 15 shown in FIG. 3.

Referring to the drawings, the vegetable box 15 is provided in the vegetable compartment 50 provided below the refrigerating compartment of the refrigerator 21, and the humidity control plate 11 is applied in the vegetable box 15. Able to know.

The humidity control plate 11 keeps the humidity inside the vegetable box 15 uniformly and circulates the humidity, thus keeping the vegetables or fruits inside fresh for a long time.

FIG. 8 is a flow chart briefly illustrated to explain a manufacturing method of the humidity control plate shown in FIG. 1, and the description thereof is as described above.

The table below is a comparison value showing the state of the vegetable after refrigeration in 400 ℃ under 2 ℃ environment after putting the vegetables in the vegetable box equipped with a general vegetable box and the damping plate of this embodiment.

The porous ceramic material mixed in the inside of the humidity plate of the present invention example corresponding to the experimental data in the table below was 20 wt% based on the total weight of the humidity plate, and was heated at a temperature of 900 ° C. for 30 minutes in the heating step. The pores of the porous ceramic material of this embodiment were properly mixed in the size of about 5nm to 10nm.

Plain Vegetable Box Vegetable box with humidifier Final humidity 78.1% 91.7% Vegetable dry rate 67% 33%

As shown in [Table 1], it can be seen that the final humidity in the vegetable box equipped with a humidification element is significantly higher than in the case of a general vegetable box. In addition, the drying rate of the vegetables in the vegetable box equipped with a humidifier is also significantly lower than the general vegetable box to maintain a humid state. In the case of ordinary vegetable boxes, the drying rate of vegetables reaches 67%, which is almost dry. The higher the drying rate, the less water.

Figure 9 is a graph showing the humidity change inside the vegetable box when the humidity control plate for humidity control in the refrigerator according to an embodiment of the present invention, Figure 10 is in contrast to the graph shown in Figure 9, of the general vegetable box This graph shows the change in humidity.

9 and 10, the porous ceramic material mixed in the inside of the humidity plate of the embodiment of the present invention was 20 wt% based on the total weight of the humidity plate and was heated at a temperature of 900 ° C. for 30 minutes in the heating step. The pores of the porous ceramic material of this embodiment were properly mixed in the size of about 5nm to 10nm.

As shown in Figure 9, compared to the sealed vegetable box can be seen that the humidity of the fresh vegetable box (with a humidity plate) weak sealing force is raised to about 80%. By installing a humidification plate in a weakly sealed vegetable box, the humidity has increased to 80%.

On the other hand, as shown in Figure 10, in the case of fresh vegetable box is not equipped with a humidity plate it can be seen that the maximum humidity is only up to about 65%. There is a big difference in humidity with and without a damp plate.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

11: Humidity version 13: Storage pocket
13a: space 13b: through hole
15a: drawer 15b: top plate
15c: Internal space 15d: Support pin
15e: Storage tray 15f: Pin hole
15 g: bottom plate 15 h: side wall
15k: Passage 15m: Wall surface
17: Hook 21: Refrigerator
50: vegetable room 100: porous ceramic material
102: the matrix material 104: inorganic binder

Claims (17)

In the state that is mounted inside the refrigerator to control the humidity around it,
Humidification plate for moisture control inside the refrigerator comprising a porous ceramic material, a matrix material and an inorganic binder, the pores having a diameter of 1nm to 20nm in the distribution. The method of claim 1,
The porous ceramic material;
Humidification plate for moisture control inside the refrigerator, characterized in that any one selected from boehmite, activated alumina, gamma alumina, diatomaceous earth, volcanic clay, allophene, zeolite. The method of claim 1,
The matrix material, humidity control board for moisture inside the refrigerator, characterized in that any one selected from clay, kaolin, ocher, clay. The method of claim 1,
The inorganic binder, humidity control plate for moisture inside the refrigerator, characterized in that any one of the glass powder or frit (frit) powder. The method of claim 1,
The porous ceramic material mixed in the inside of the humidity plate, humidity control plate for moisture inside the refrigerator, characterized in that 1wt% to 40wt% relative to the total weight of the humidity plate. The method of claim 1,
The humidity control damp plate,
Humidity plate for moisture control inside the refrigerator characterized in that the wet and kneaded the porous ceramic material, the matrix material, the inorganic binder, dried and press-molded, and heated for 5 minutes to 30 minutes at 800 ℃ to 1000 ℃. The method of claim 2,
Humidity plate for moisture control inside the refrigerator, characterized in that the aluminum hydroxide is used as a source material of the boehmite, activated alumina and gamma alumina. In a vegetable box installed in the refrigerator compartment of the refrigerator to accommodate vegetables therein,
Inside the vegetable box,
A vegetable box comprising a porous ceramic material, a matrix material, and an inorganic binder, and a humidity control board for controlling humidity inside a refrigerator, in which pores having a diameter of 1 nm to 20 nm are distributed. The method of claim 8,
Porous ceramic material in the humidity plate,
Vegetable box having a humidity control plate, characterized in that any one selected from gamma alumina, diatomaceous earth, volcanic clay, allophene, zeolite. The method of claim 8,
The matrix material in the humidity plate, vegetable box having a humidity plate, characterized in that any one selected from clay, kaolin, ocher, clay. The method of claim 8,
The inorganic binder in the humidity plate, the vegetable box having a humidity plate, characterized in that any one of the glass powder or frit (frit) powder. The method of claim 8,
Porous ceramic material mixed in the inside of the humidity plate, the vegetable box having a humidity plate, characterized in that 1wt% to 40wt% relative to the total weight of the humidity plate. The method of claim 8,
The humidity control damp plate,
Wet kneading the porous ceramic material, the matrix material, the inorganic binder, followed by drying and press molding, and a vegetable box having a humidity plate, characterized in that produced by heating for 5 to 30 minutes at 800 ℃ to 1000 ℃. The method of claim 8,
The vegetable box is;
It provides an inner space for vegetables and has a drawer section open to the top,
The humidity control plate,
Vegetable box having a damping plate, characterized in that disposed on the inner wall surface of the drawer. The method of claim 8,
The vegetable box is;
It provides an inner space for storing vegetables and consists of a drawer portion open to the upper portion, and an upper plate portion covering the upper portion of the drawer portion,
The bottom of the upper plate portion, the vegetable box having a humidity control plate, characterized in that the storage tray having a passage that accommodates and supports the humidity control plate, and is opened into the inside of the drawer portion. 16. The method of claim 15,
The storage tray is a vegetable box having a humidity control plate, characterized in that the pin is connected to the bottom of the upper plate portion can be rotated up and down, and rotated downward in the state of removing the drawer portion. A refrigerator having a vegetable box according to any one of claims 8 to 16.

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