WO2024034820A1

WO2024034820A1 - Refrigerator

Info

Publication number: WO2024034820A1
Application number: PCT/KR2023/008100
Authority: WO
Inventors: 유정우; 서국정; 유수철; 이인섭; 최경훈
Original assignee: 삼성전자주식회사
Priority date: 2022-08-12
Filing date: 2023-06-13
Publication date: 2024-02-15
Also published as: KR20240022883A

Abstract

A refrigerator comprising a sealing box is disclosed. The refrigerator comprises: a storage compartment; a door that opens and closes the storage compartment; and the sealing box comprising a storage container that stores food therein, and a case that accommodates the storage container. The sealing box comprises a sealing member provided between the storage container and the case so as to seal the inside of the storage container, and a vacuum device that lowers the internal pressure of the storage container by suctioning the air inside the storage container, and the storage container comprises a vacuum part, the volume of which changes according to the internal pressure of the storage container.

Description

refrigerator

The present disclosure relates to a refrigerator including a storage container for storing food, and more specifically, to a refrigerator including a storage container in which the volume inside the container changes as the storage container is placed in a vacuum state.

Generally, a refrigerator is a device that keeps food fresh by having a storage compartment and a cold air supply device that supplies cold air to the storage compartment.

The temperature of the storage room is maintained within a certain range required to keep food fresh.

The storage compartment of such a refrigerator is arranged so that the front is open, and the open front is normally closed by a door to maintain the temperature of the storage compartment.

Inside the storage room, a plurality of storage containers that can seal and store food, etc. in the internal space are provided in a way that is drawn in and out.

To maintain freshness by preventing oxidation of food stored in the internal space of the storage container, a sealing member may be provided to seal the interior of the storage container.

One aspect of the present disclosure provides a refrigerator including an airtight box having a structure capable of sealing a storage container.

One aspect of the present disclosure provides a refrigerator including an airtight box that creates a vacuum inside the storage container.

One aspect of the present disclosure provides a refrigerator including an airtight box whose volume can be reduced as the inside of the storage container becomes vacuum.

The technical problem to be achieved in this document is not limited to the technical problem mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. There will be.

A refrigerator according to one embodiment includes a storage compartment, a door that opens and closes the storage compartment, a storage container for storing food therein, and an airtight box including a case for accommodating the storage container. The sealed box may include a sealing member provided between the storage container and the case to seal the interior of the storage container. The sealed box may include a vacuum that sucks air inside the storage container to lower the internal pressure of the storage container. The storage container may include a vacuum portion whose volume changes depending on the internal pressure of the storage container.

The vacuum portion may include a membrane that is deformable depending on internal pressure.

The membrane may include a first membrane adapted to receive food. The membrane may include a second membrane covering the top of the first membrane. Food can be stored between the first and second membranes.

The vacuum unit may include a check valve connected to the vacuum unit to maintain the internal pressure of the vacuum unit.

The rear wall of the storage container may include a rear engaging groove. The check valve can be connected to the vacuum through the rear engagement groove.

The storage container may include a border portion surrounding the upper opening. The sealing member may include a first sealing member provided on the edge portion. The sealing member may include a first sealing member and a second sealing member provided in the case to seal the storage container.

The first film may be fitted between the first sealing member and the edge portion, and the second film may be fitted between the second sealing member and the inner upper surface of the case.

The storage container may include a rail that allows it to be placed in and out of the case. The case may include a guide rail provided in correspondence with the rail to guide the rail. It may be formed to be inclined so that the rear end of the rail is positioned higher than the front end of the rail so that the storage container rises as it is introduced into the case.

The storage container may include a front panel formed to cover the front opening of the case. The front panel may include handles. The vacuum unit may include a check valve that is provided to be opened by a handle.

The storage container may include an interlocking pin provided to pressurize the check valve according to the rotation of the handle.

The sealed box may further include an expansion member attached to the upper inner surface of the case so that the volume increases as the vacuum operates.

A vacuum may be provided outside the case to suck air inside the case. The storage container may include a vent formed to communicate with the inside of the case so that the vacuum sucks air inside the storage container.

The case may include a front opening for entry and exit of the storage vessel. The case may include a flange around the front opening. The storage container may include a front panel formed to cover the front opening of the case. The sealing member may be provided on the flange to seal the closed box.

The front panel of the storage container may include a rotatable handle. The front panel of the storage container may include an air passage provided to communicate with the outside and the vacuum section. The front panel of the storage container may include an opening and closing device that is combined with a handle to open and close the air passage.

A refrigerator according to one embodiment includes a storage compartment, a door that opens and closes the storage compartment, a storage container provided to store food therein, and an airtight box including a case for accommodating the storage container. The sealed box may include a first sealing member provided on the edge of the storage container. The sealed box may include a second sealing member provided in the case to seal the interior of the storage container. The sealed box may include a vacuum provided to lower the internal pressure of the storage container. The storage container may include a vacuum portion including a vinyl film whose volume changes depending on the internal pressure of the storage container.

The storage container may include a handle rotatably provided on the front panel of the storage container. The vacuum unit may include a first check valve provided to maintain the pressure lowered by the vacuum. The vacuum unit may include a second check valve provided so that the interlocking pin pressed by the handle releases the sealed state.

The storage container may include a pair of rails provided on the left and right sides of the storage container so that it can be placed in and out of the case. The case may include a guide rail provided in correspondence with the rail to guide the rail. The rear end of the rail may be positioned higher than the front end of the rail so that it rises as the storage container is introduced.

The membrane may be fitted between the second sealing member and the edge portion.

A refrigerator according to one embodiment includes a storage compartment, a door that opens and closes the storage compartment, a storage container for storing food therein, and an airtight box including a case for accommodating the storage container. The sealed box may include a sealing member provided between the storage container and the case to seal the interior of the storage container. The sealed box may include a vacuum provided to exhaust the air inside the storage container. The storage container may include a vacuum portion including a vinyl film whose volume changes depending on the internal pressure of the storage container. The storage container may include a front panel provided to cover the front opening of the case. The front panel of the storage container may include a rotatable handle. The front panel of the storage container may include an air passage to communicate with the inside and outside of the storage container.

The front panel may include an opening and closing device linked with the handle to open and close the air passage.

According to the present disclosure, when the storage container is accommodated in the case, the inside of the storage container may be in a vacuum state.

According to the present disclosure, the storage container is configured to rise as it enters the case by an inclined rail, thereby increasing airtightness.

According to the present disclosure, when the inside of the storage container is in a vacuum state, the internal volume decreases and the amount of oxygen inside decreases, thereby preventing oxidation of food and enabling long-term storage.

According to the present disclosure, the check valve of the storage container is linked to the handle, so that the internal sealing state can be released when the storage container is opened.

The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description below. will be.

Figure 1 is a perspective view showing a refrigerator door in an open state according to one embodiment.

Figure 2 is a side cross-sectional view schematically showing the internal structure of a refrigerator according to one embodiment.

Figure 3 is a perspective view showing a storage container according to one embodiment.

Figure 4 is an exploded view showing the configuration of the closed box of Figure 3.

Figure 5 is a side view showing the side of the closed box shown in Figure 3.

Figure 6 is a diagram schematically showing the interior of part A of Figure 5.

Figure 7 is a diagram schematically showing the interior of part B of Figure 5.

Figure 8 is a diagram showing the interior of the sealed box in a state before vacuum, according to one embodiment.

FIG. 9 is a diagram illustrating the inside of a sealed box in a state after vacuum, according to an embodiment.

Figure 10 is a perspective view of a closed box according to one embodiment.

FIG. 11 is an exploded view showing the configuration of the closed box of FIG. 10.

Figure 12 is a diagram showing the handle interlocking structure of the closed box of Figure 10.

Figure 13 is a diagram showing the interior of a sealed box in a state before vacuum, according to one embodiment.

Figure 14 is a diagram showing the interior of a closed box in a state after vacuum according to one embodiment.

The embodiments described in this specification and the configurations shown in the drawings are only preferred examples of the disclosed invention, and at the time of filing this application, there may be various modifications that can replace the embodiments and drawings in this specification.

In addition, the same reference numbers or symbols shown in each drawing of this specification indicate parts or components that perform substantially the same function.

Additionally, the terms used herein are used to describe embodiments and are not intended to limit and/or limit the disclosed invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. The existence or addition of numbers, steps, operations, components, parts, or combinations thereof is not excluded in advance.

In addition, terms including ordinal numbers such as “first”, “second”, etc. used in this specification may be used to describe various components, but the components are not limited by the terms, and the terms It is used only for the purpose of distinguishing one component from another. For example, a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention. The term “and/or” includes any of a plurality of related stated items or a combination of a plurality of related stated items.

Meanwhile, the terms “up and down direction,” “bottom side,” and “front and back direction” used in the following description are defined based on the drawings, and the shape and location of each component are not limited by these terms.

The directions of front, rear, upper, lower, left, and right will be collectively referred to throughout the specification based on the direction shown in FIG. 1 of the attached drawing. In Figure 1, the X-axis, Y-axis, and Z-axis directions that are perpendicular to each other are indicated, with the It means up and down direction.

Strictly speaking, the terms “vacuum” and “vacuum state” used in this specification refer to a state in which no substances exist, but are defined based on the case where the air pressure is less than atmospheric pressure.

Therefore, “vacuum” and “vacuum state” described in this specification do not refer to a state in which no substances exist, but are terms used to describe a state having a pressure lower than atmospheric pressure.

Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings.

Figure 1 is a diagram showing a state in which the door of a refrigerator is open. Figure 2 is a schematic side cross-sectional view of the refrigerator disclosed in Figure 1.

Referring to Figures 1 and 2, the refrigerator 1 includes a main body 10 having a storage compartment 11, a door 20 provided to open and close the storage compartment 11, and cold air that supplies cold air to the storage compartment 11. It may include a supply device (not shown).

The main body 10 includes an inner case 12 forming the storage compartment 11, an outer case 13 coupled to the outside of the inner case 12, and an insulation material 14 provided between the inner case 12 and the outer case 13. may include. The inner case 12 may be made of a plastic material, and the outer case 13 may be made of a metal material.

The main body 10 may have an intermediate wall 17 that divides the storage compartment 11 into a refrigerating compartment 15 and a freezing compartment 16.

The storage compartment 11 can be used as a refrigerator compartment 15 for refrigerating and storing food maintained at approximately 0 to 5 degrees Celsius, and a freezer 16 for storing food frozen at approximately -30 to 0 degrees Celsius.

The refrigerating compartment 15 can be opened and closed by the refrigerating compartment door 21, and the freezing compartment 16 can be opened and closed by the freezer door 22.

The refrigerator compartment 15 may be provided with an airtight box 100 to keep vegetables, etc. fresh. A plurality of sealed boxes 100 may be provided. The sealed box 100 may include a storage container 200 capable of storing food, and a case 300 capable of accommodating the storage container 200.

The sealed box 100 may be placed on the lower side of the refrigerating compartment 15. The storage container 200 can be inserted into and withdrawn from the case 300 in a sliding manner. The storage container 200 may be provided with a storage space 220 where food can be stored.

The storage container 200 may include a handle 211 that a user can hold when withdrawing. The handle 211 may be provided to be movable. The handle 211 may be provided on the front panel 210 of the storage container 200. The handle 211 may be rotatable up and down or left and right about the rotation axis 212 (FIG. 4). In this drawing, a handle that can be rotated up and down is shown as an example.

The refrigerator 1 may include a controller (not shown). The controller (not shown) can recognize that the door is closed by a sensor (not shown) located on the door 20. The controller can recognize that the door is closed and operate the vacuum 500 (FIG. 7).

Figure 3 is a perspective view showing a storage container of a refrigerator according to one embodiment. Figure 4 is an exploded view showing the configuration of an airtight box of a refrigerator according to an embodiment.

3 and 4, the sealed box 100 includes a storage container 200 in which food is stored, a case 300 for accommodating the storage container 200, and the storage container 200 and the case 300. It may include a sealing member 400 capable of sealing the gap therebetween, and a vacuum 500 connected to the storage container 200. The vacuum 500 may be accommodated in a vacuum box 502.

The storage container 200 may be provided with a storage space 220 (FIG. 2) for storing food. The storage space 220 may be formed in a substantially hexahedral shape. The storage space 220 may be formed by the front panel 210, rear wall 221, left and

right side walls

222 and 223, and lower wall 224 of the storage container 200. The storage space 220 may be located inside the case 300 when the storage container 200 is accommodated in the case 300.

The storage container 200 may include a vacuum portion 600 (FIG. 8) whose volume can vary depending on the internal pressure of the storage container 200. The vacuum unit 600 may include a membrane 610 that is deformed according to the internal pressure of the storage container 200. Food may be stored in the vacuum unit 600. Food stored in the vacuum unit 600 may be prevented from being oxidized due to a decrease in the amount of oxygen inside the food as the vacuum unit 600 enters a vacuum state.

The membrane 610 may be made of rubber or vinyl. Additionally, any material that can expand and contract can be used as the membrane 610.

The membrane 610 may include a first membrane 611 capable of containing food, and a second membrane 612 disposed on top of the first membrane 611 and covering the first membrane 611. . Food may be stored between the first membrane 611 and the second membrane 612.

The storage container 200 may include a rear coupling groove 227 (FIG. 7). The storage container 200 may have a rear coupling groove formed on the rear wall 221.

The vacuum unit 600 may include a check valve 622 to maintain the internal pressure of the vacuum unit 600. The check valve 622 may be connected to a vacuum. The check valve 622 may be formed on the membrane 610 of the vacuum unit 600. The check valve 622 may be formed on the first film 611 of the vacuum unit 600. The check valve 622 may be formed behind the first membrane 611.

The vacuum unit 600 may include a check valve 621 to release the sealed state inside the vacuum unit 600. The check valve 621 (FIG. 6) may be formed on the film 610 of the vacuum part 600. The check valve 621 may be formed in the first film 611. The check valve 621 may be formed in front of the first membrane 611.

The case 300 may be provided with a front opening 315a so that the storage container 200 can enter and exit the inside of the case 300. The front of the storage container 200 may include a front panel 210 to cover the front opening 315a.

The front panel 210 may include a handle 211 so that the user can insert and withdraw the storage container 200. The front panel 210 may include a handle groove 213 so that the handle 211 can be accommodated. The handle may be rotatably provided on the front panel 210.

A rail 230 may be disposed on the storage container 200 so that the storage container 200 can be placed in and out of the case. The rail may be disposed on the outside of the left and

right side walls

222 and 223 of the storage container 200. Rails 230 may be provided in pairs. The rail 230 is shown as being provided on the left and right sides of the storage container 200, but the location of the rail is not limited to this.

The rail 230 may be inclined upward toward the rear. The rear end 232 of the rail 230 may be formed at a higher position than the front end 231. Wheels 233 may be formed on the rail 230 to facilitate insertion and withdrawal of the storage container.

The storage container 200 may include an upper opening 225 for storing and removing food. The storage container 200 may include an edge portion 226 surrounding the upper opening 225. A sealing member 401 may be attached to the edge portion 226.

Case 300 may include a sealing member 402. Case 300 may include a sealing member 402 on the inner upper surface 301. The sealing member 402 may be formed to correspond to the sealing member 402 attached to the edge portion 226 of the storage container 200.

The sealing member 400 may include a first sealing member 401 provided on the edge portion 226 and a second sealing member 402 provided on the inner upper surface 301 of the case 300. As the storage container 200 is introduced into the case 300, the first sealing member 401 and the second sealing member 402 may be provided to be airtight. The storage container 200 can seal the airtight box 100 together with the first sealing member 401 and the second sealing member 402.

A vacuum 500 may be connected to the storage container 200. The vacuum 500 can suck in the air inside the storage container 200 and discharge it to the outside. While the storage container 200 is sealed by the sealing member 400, the inside of the storage container 200 may be placed in a vacuum state by the vacuum 500. The vacuum 500 may be provided inside the case 300.

Case 300 may include a guide rail 320. Guide rails 320 may be provided on the left and right

inner walls

322 and 323 of the case 300. The guide rail 320 may be provided at a position corresponding to the rail 230 to guide the movement of the rail 230 of the storage container 200.

Figure 5 is a side view of the closed box.

Referring to FIG. 5, the storage container 200 may include a front panel 210 on the front. The front panel 210 may be formed higher than the edge portion 226 to cover the front opening 315a (FIG. 4) of the case 300.

The storage container 200 may include rails 230 on the outside of the left and

right side walls

222 and 223. The rail 230 may be formed to be inclined so that the rear end 232 of the rail 230 is positioned higher than the front end 231 of the rail 230 so that the storage container 200 rises as it is introduced into the case 300. Wheels 233 may be formed on the rail 230 to facilitate insertion and withdrawal of the storage container.

As the rail 230 is formed to be inclined, the storage container 200 rises as it is drawn into the case 300, thereby improving the airtightness of the sealing member 400.

The storage container 200 may include a vacuum box 502 at the rear. Vacuum box 502 may include a vacuum 500 (FIG. 7). The vacuum box 502 may be in communication with the outside.

Figure 6 is a diagram schematically showing the handle interlocking structure of portion A of Figure 5.

Referring to Figure 6, a movable handle 211 may be placed on the front panel 210 of the storage container. The handle 211 may be accommodated in the handle groove 213. The front panel 210 may include a rotation axis 212 therein. The handle 211 may be provided to be rotatable about the rotation axis 212.

The front panel 210 may include a front coupling groove 214 so that the storage container 200 can communicate with the outside. The front panel 210 may include a front coupling groove 214 to which the check valve 621 is coupled. By being coupled to the front coupling groove 214, the check valve 621 can be fixedly positioned despite frequent deformation of the membrane 610.

The front panel 210 may include interlocking pins 215 therein. The interlocking pin 215 may pressurize the check valve 621 as the handle 211 is lifted by the user. When the interlocking pin 215 presses the check valve 621, the sealed state is released and the internal pressure of the storage container 200, which was in a vacuum state, may become equal to atmospheric pressure.

A protrusion 211b may be formed on the connection portion 211a of the handle 211. The interlocking pin 215 may include a locking groove 215a. The protrusion 211b of the handle 211 may be inserted into the locking groove 215a of the interlocking pin 215. As the handle 211 is lifted, the interlocking pin 215 including the locking groove 215a into which the protrusion 211b is inserted moves rearward to close the check valve 621 coupled to the front engaging groove 214. It can be pressurized.

In this way, the user can release the vacuum state inside the storage container 200 by lifting the handle 211 to open the storage container 200.

The interlocking structure of the handle 211 and the interlocking pin 215 is not limited to this and can be implemented in various other ways.

Figure 7 is a cross-sectional view showing the vacuum connection structure in part B of Figure 5. Vacuum 500 may be accommodated by vacuum box 502. The vacuum 500 may be placed outside the rear wall 221 of the storage container 200.

The vacuum 500 may include a hose 501. The hose 501 may be connected to the interior of the storage container 200 through the rear wall 221 of the storage container 200. The hose 501 may be connected to the rear coupling groove 227 of the storage container 200.

The vacuum 500 may be connected to the check valve 622 of the vacuum unit 600 through the rear coupling groove 227. It can be directly coupled to the check valve 622 coupled to the rear coupling groove 227. The check valve 622 can be fixedly positioned despite frequent deformation of the membrane 610 by being coupled to the rear coupling groove 227.

The check valve 622 can maintain the vacuum state by preventing the air remaining inside from leaking out to the outside after the vacuum unit 600 is in a vacuum state by operating the vacuum 500.

Figure 8 is a diagram showing the inside of a sealed box before being in a vacuum state. Figure 9 is a diagram showing the inside of a sealed box after being in a vacuum state.

Referring to FIGS. 8 and 9 , the membrane 610 of the vacuum unit 600 may be fitted into the sealing member 400 . The first film 611 may be fitted between the first sealing member 401 attached to the edge portion 226 and the edge portion 226 . The second film 612 may be fitted into the second sealing member 402 attached to the inner upper surface 301 of the case 300 and the inner upper surface 301 of the case 300. As a result, the airtightness of the vacuum unit 600 can be improved. The space for accommodating food formed by the first membrane 611 and the second membrane 612 can be completely sealed by the sealing

members

401 and 402.

The membrane 610 may be provided with a check valve 621 on the front panel 210 of the storage container. The check valve 621 may be coupled to the front coupling groove 214 (FIG. 6) of the front panel 210.

The membrane 610 may include a check valve 622 on the rear wall 221 of the storage container 200. The check valve 622 may be coupled to the rear coupling groove 227 of the rear wall 221 of the storage container 200. The check valve 622 may be connected to the vacuum 500 through a rear coupling groove 227 (FIG. 7).

Before the inside of the sealed box 100 becomes a vacuum state, the membrane 610 of the vacuum part 600 maintains its original state. After the vacuum 500 operates and enters a vacuum state, the internal air of the vacuum unit 600 is discharged to the outside and the internal pressure decreases, thereby reducing the volume of the vacuum unit 600.

A typical closed box made of plastic cannot reduce its volume even if the internal pressure decreases. According to one embodiment according to the present disclosure, the vacuum portion 600 includes a deformable membrane 610 whose volume can be changed, so that the volume decreases as the internal pressure decreases.

The following [Table 1] is a table comparing the internal absolute oxygen capacity after setting the interior of the existing sealed box and the space-variable sealed box to have the same vacuum degree.

	일반 밀폐 박스Normal sealed box	공간 가변형 밀폐 박스Space-variable sealed box
내부 진공도Internal vacuum degree	500mmHg (1기압 = 760mmHg)500mmHg (1 atm = 760mmHg)
내체적(진공 전)Internal volume (before vacuum)	25L25L	25L25L
내체적(진공 후)Internal volume (after vacuum)	25L25L	10L10L
내부 절대 산소 용량Internal absolute oxygen capacity	3.45L3.45L	1.38L1.38L
진공기 성능vacuum performance	Rate of flow: >2.8L/min Max Pressure: > 600mmHg Vacuum: > 400mmHgRate of flow: >2.8L/min Max Pressure: > 600mmHg Vacuum: > 400mmHg

While the internal volume of a conventional sealed box cannot be changed even after entering a vacuum state, the internal volume of a space-variable sealed box becomes smaller than that of an existing sealed box after being placed in a vacuum state, so the internal absolute oxygen capacity may also be low. Food spoilage occurs when food reacts with oxygen in the air and oxidizes, so the lower the internal absolute oxygen capacity, the fresher food can be stored. Figure 10 is a diagram showing an airtight box of a refrigerator according to one embodiment. Figure 11 is an exploded view showing the configuration of an airtight box of a refrigerator according to an embodiment.

With reference to FIGS. 10 and 11 , a sealed box of a refrigerator according to another embodiment of the present invention will be described. The same components as the embodiments shown in FIGS. 1 to 9 are assigned the same reference numerals, and detailed descriptions may be omitted.

Referring to FIGS. 10 and 11 , the sealed box 100 may include a vacuum 500 disposed outside the case 300 . The vacuum 500 can suck in the air inside the sealed box 100 and discharge it to the outside. Case 300 may include an expansion member 700 whose volume changes depending on the pressure inside the storage container 800.

The expansion member 700 may exist in a contracted state before entering a vacuum state, that is, under atmospheric pressure. When the vacuum 500 operates and the air inside the sealed box 100 is discharged, the expansion member 700 increases in volume because the pressure inside the sealed box 100 becomes less than atmospheric pressure. The expansion member 700 may be made of rubber or vinyl. However, it is not limited to this, and the expansion member 700 can be formed from any material that can expand and contract.

The expansion member 700 may be attached to the inner upper surface 301 of the case 300. However, the location of the expansion member 700 is not limited to this.

The sealed box 100 may include a vacuum unit 600 inside the storage container 800. The vacuum unit 600 is an internal space surrounded by the storage container 800 and the case 300, excluding the expansion member 700. The volume of the vacuum unit 600 may change as the expansion member 700 attached to the case 300 expands or contracts. As the volume of the expansion part 700 increases, the volume of the vacuum part 600 may decrease, and as the volume of the expansion part 700 decreases, the volume of the vacuum part 600 may increase. Food may be stored in the vacuum unit 600.

The case 300 may have a front opening 315a formed to allow the storage container 800 to enter and exit. A flange 315 may be formed around the front opening 315a. A sealing member 400 may be provided on the flange 315 to seal the sealed box 100. When the storage container 800 is introduced into the case 300, the inside of the case 300 may be sealed by the sealing member 400.

The storage container 800 may include a vent 828. The vent 828 may be formed in the rear wall 821 of the storage container 800. The ventilation holes 828 may be formed in plural numbers. As the vacuum 500 operates, the air inside the storage container 800 may be sucked into the vacuum 500 through the ventilation hole 828 and discharged to the outside.

Figure 12 is a diagram showing the handle interlocking structure of the closed box shown in Figure 10.

Referring to FIG. 12, the front panel 810 may include an air passage 817 communicating between the outside and the inside of the storage container 800. The air passage 817 may be opened and closed by the opening and closing device 816. The opening and closing device 816 opens the air passage 817 when the handle 811 is lifted, and closes the air passage 817 when the handle 811 is lowered.

The air passage 817 may be provided above the rotating part 811a of the handle 811. The air passage 817 may be provided on the upper side of the rotating parts 811a of the two handles, respectively. The opening and closing device 816 may be provided corresponding to the number of air passages 817.

The opening and closing device 816 includes a groove 816a. The protrusion 811b formed on the connecting portion 811a of the handle 811 may be inserted into the groove 816a of the opening and closing device 816. When the user lifts the handle 811 and withdraws the storage container 800 by the connection structure of the protrusion 811b formed on the connection portion 811a of the handle 811 and the groove 816a of the opening and closing device 816, After the air passage 817 is opened and the vacuum state inside the storage container 800 is released, the storage container 800 may be opened.

When the user lowers the handle 811 to insert the storage container 800, the air passage 817 is closed by the opening and closing device 816, so the inside is sealed, and after the storage container 800 is introduced, the air passage 817 is closed by the opening and closing device 816. The air 500 may operate to change the interior into a vacuum state.

In this way, the user can release the vacuum state inside the storage container 800 by lifting the handle 811 to open the storage container 800.

Figure 13 is a diagram showing the inside of a sealed box before being placed in a vacuum state. Figure 14 is a diagram showing the inside of a sealed box after being in a vacuum state.

Referring to Figures 13 and 14, before the inside of the sealed box 100 enters a vacuum state, the expansion member 700 of the sealed box 100 exists in a contracted state, and after the vacuum operates and enters a vacuum state, The expansion member 700 expands and the volume of the vacuum part 600 decreases.

Existing closed boxes made of plastic cannot reduce their volume even if the internal pressure decreases. According to one embodiment according to the present disclosure, the vacuum unit 600 includes an expansion member 700 so that the volume can change, so as the pressure inside the storage container 800 decreases, the volume of the expansion member 700 As increases, the volume of the vacuum portion 600 may decrease.

The vacuum unit 600 may include a first check valve 622 provided to maintain the pressure lowered by the vacuum 500. The vacuum unit 600 may include a second check valve 621 that is provided in conjunction with the handle to release the sealed state.

In the above, specific embodiments are shown and described. However, it is not limited to the above-described embodiments, and those skilled in the art can make various changes without departing from the gist of the technical idea of the invention as set forth in the claims below. .

Claims

storeroom;

a door that opens and closes the storage compartment; and

An airtight box including a storage container for storing food therein, and a case for accommodating the storage container; Including,

The sealed box is,

A sealing member provided between the storage container and the case to seal the interior of the storage container,

It includes a vacuum device that sucks air inside the storage container to lower the internal pressure of the storage container,

The storage container is a refrigerator including a vacuum portion whose volume changes depending on the internal pressure of the storage container.
According to claim 1,

A refrigerator wherein the vacuum unit includes a membrane that can be deformed according to the internal pressure of the storage container.
According to claim 2,

The membrane,

a first membrane provided to receive the food;

comprising a second film covering an upper part of the first film,

A refrigerator in which the food is stored between the first membrane and the second membrane.
According to claim 1,

A refrigerator wherein the vacuum unit includes a check valve connected to the vacuum unit to maintain an internal pressure of the vacuum unit.
According to claim 4,

The rear wall of the storage container includes a rear coupling groove,

A refrigerator in which the check valve is connected to the vacuum and the rear coupling groove.
According to claim 2,

The storage container includes an edge surrounding an upper opening,

The sealing member includes a first sealing member provided on the edge portion,

A refrigerator including a second sealing member provided in the case to seal the storage container.
According to claim 6,

The first membrane is fitted between the first sealing member and the edge portion,

The refrigerator wherein the second membrane is fitted between the second sealing member and the inner upper surface of the case.
According to claim 7,

The storage container includes a rail provided to allow loading and unloading into the case,

The case includes a guide rail provided to correspond to the rail to guide the rail,

A refrigerator that is inclined so that the rear end of the rail is positioned higher than the front end of the rail so that the storage container rises as it is introduced into the case.
According to claim 1,

The storage container includes a front panel formed to cover the front opening of the case,

The front panel includes a handle,

A refrigerator wherein the vacuum unit includes a check valve that is provided to be opened by the handle.
According to clause 9,

The storage container is a refrigerator including an interlocking pin provided to pressurize the check valve according to rotation of the handle.
According to claim 1,

The airtight box further includes an expansion member attached to the upper inner surface of the case so that its volume increases as the vacuum operates.
According to claim 11,

The vacuum is provided outside the case to suck air inside the case,

The storage container is a refrigerator including a vent formed to communicate with the inside of the case so that the vacuum sucks air inside the storage container.
According to claim 12,

The case includes a front opening for the storage container to enter and exit and a flange around the front opening,

The storage container includes a front panel formed to cover the front opening of the case,

The sealing member is provided on the flange to seal the airtight box.
According to claim 13,

The front panel of the storage container is,

A handle that can be rotated,

It includes an air passage provided to communicate with the outside and the vacuum unit,

A refrigerator wherein the front panel of the storage container includes an opening and closing device that is coupled with the handle to open and close the air passage.