CN112747528A - Refrigerator with a door - Google Patents

Abstract

The present invention provides a refrigerator, including: the inner container is internally provided with a storage chamber, and the rear side of the storage chamber is provided with an air supply duct; the storage container is arranged in the storage chamber; the oxygen removing assembly is arranged on the storage container and is provided with an oxygen consuming part facing the inside of the storage container and used for consuming oxygen through electrochemical reaction and an electrolysis part facing the outside of the storage container and used for electrolyzing water vapor outside the storage container through the electrochemical reaction; the moisture permeable assembly is arranged on the storage container, is arranged at an interval with the deoxidizing assembly and is configured to allow water vapor in the storage container to seep out; the air supply duct is provided with an air induction port for supplying air to the moisture permeable component, and the air induction port is configured to allow air flow in the air supply duct to enter the storage compartment and flow through the moisture permeable component back to the surface inside the storage container in a moisture permeable mode, so that a drying environment is formed outside the storage container, the moisture permeable efficiency of the moisture permeable component is improved, and the condensation or dripping phenomenon inside the storage container is reduced or avoided.

Description

Refrigerator with a door

Technical Field

The invention relates to the field of preservation, in particular to a refrigerator.

Background

The modified atmosphere preservation technology is a technology for prolonging the storage life of food by adjusting environmental gas. In the refrigerator field, through setting up electrolysis deoxidization subassembly, utilize its electrochemical reaction to consume inside oxygen, build low oxygen atmosphere, can improve fresh-keeping effect. The electrochemical reaction comprises two half-reactions, which are respectively carried out on an anode plate and a cathode plate. Wherein the anode plate electrolyzes water vapor under the action of the electrolytic voltage to generate hydrogen ions and oxygen, and the cathode plate is configured to generate water by the reaction of the hydrogen ions and the oxygen under the action of the electrolytic voltage.

Because the deoxidization subassembly still produces water when deoxidization to the storing container, the moisture accumulation can lead to the humidity increase, suitably increases humidity and is favorable to improving fresh-keeping effect. However, if the moisture in the storage container is accumulated too much, condensation or dripping may occur, which may deteriorate the internal storage condition.

Therefore, how to adjust the humidity inside the storage container during the operation of the oxygen removing assembly becomes a technical problem to be solved urgently by those skilled in the art.

Disclosure of Invention

An object of the present invention is to provide a refrigerator that solves at least any one of the above-mentioned technical problems.

It is a further object of the present invention to reduce or avoid the effects of the dehumidification process on the oxygen removal efficiency of the oxygen removal assembly.

It is another further object of the present invention to increase the oxygen scavenging efficiency of the oxygen scavenging assembly.

It is yet a further object of the present invention to reduce the amount of frost formation in the evaporator of a refrigerator.

In particular, the present invention provides a refrigerator comprising: the inner container is internally provided with a storage compartment and an air supply duct; the storage container is arranged in the storage chamber; the oxygen removing assembly is arranged on the storage container and is provided with an oxygen consuming part facing the inside of the storage container and used for consuming oxygen through electrochemical reaction and an electrolysis part facing the outside of the storage container and used for electrolyzing water vapor outside the storage container through the electrochemical reaction; the moisture permeable assembly is arranged on the storage container, is arranged at an interval with the deoxidizing assembly and is configured to allow water vapor in the storage container to seep out; the air supply duct is provided with an induced air port for supplying air to the moisture permeable assembly, and the induced air port is configured to allow air flow in the air supply duct to enter the storage compartment and flow through the moisture permeable assembly back to one surface of the storage container under the moisture permeable mode, so that a dry environment is formed outside the storage container.

Optionally, the refrigerator further includes: the humidity sensor is arranged in the storage container and is configured to detect the humidity in the storage container every first preset time when the deoxidizing component operates; the controllable air door is arranged at the air inducing opening and is configured to enter a moisture permeable mode and open the air inducing opening when the humidity in the storage container is greater than a first preset humidity threshold value.

Optionally, the controllable damper is further configured to close the induced air opening when the humidity within the storage container is less than a second preset humidity threshold, and the first preset humidity threshold is greater than the second preset humidity threshold.

Optionally, the oxygen scavenging assembly is disposed on the back of the storage container.

Optionally, an air return opening is formed between the storage chamber and the inner container; the oxygen removal assembly is opposite the air return opening.

Optionally, the refrigerator further includes: the oxygen concentration sensor is arranged in the storage container and is configured to detect the oxygen concentration in the storage container every second preset time; the deoxidization subassembly is greater than when predetermineeing the oxygen concentration threshold value at the oxygen concentration in the storing container and is started to reduce the oxygen concentration in the storing container through electrochemical reaction.

Optionally, the oxygen scavenging assembly is configured to shut down when its operating duration is greater than or equal to a preset operating duration.

Optionally, pass through wet subassembly and be located the storing container top, above-mentioned refrigerator still includes: the air duct cover plate is arranged on the front side of the back wall of the inner container and defines an air supply air duct together with the inner container; the induced draft is located on the wind channel apron to induced draft bottom is higher than and drenches through subassembly upper surface.

Optionally, the refrigerator further includes: the air guide fan is arranged in a channel between the air induction port and the moisture permeable component and is configured to promote the formation of air flow blown to the upper surface of the moisture permeable component from the air induction port; the air guide fan is configured to start after the controllable air door opens the air guide opening.

Optionally, the storage container is a drawer comprising: a barrel having a forward opening; the drawer body is arranged in the cylinder body in a drawable manner.

According to the refrigerator, the storage container is provided with the oxygen removal assembly, and oxygen in the storage container is consumed through electrochemical reaction; the storage container is also provided with a moisture permeable assembly which is configured to allow water vapor in the storage container to seep out; the air supply duct is provided with an induced air port for supplying air to the moisture permeable component, and the induced air port is configured to allow the air flow in the air supply duct to enter the storage compartment and flow through the upper surface of the moisture permeable component in the moisture permeable mode. Because the oxygen consumption part of the oxygen removal component also generates water during the electrochemical reaction, the air supply channel is provided with the air induction port for supplying air to the moisture permeable component, so that dry air flows through the side, back to the inside of the storage container, of the moisture permeable component, a dry environment is formed outside the storage container, the humidity difference between the inside and the outside of the storage container can be increased, the moisture permeable efficiency of the moisture permeable component is improved, and the condensation or water dripping phenomenon generated inside the storage container can be reduced or avoided.

Furthermore, the deoxidizing component and the moisture permeable component are arranged at an interval, so that when the humidity of the upper surface of the moisture permeable component is reduced by using the air flow in the air supply duct, the water vapor content near the deoxidizing component is not influenced, the electrochemical reaction efficiency of the deoxidizing component is not influenced, and the influence of the dehumidifying process on the deoxidizing efficiency of the deoxidizing component can be reduced or avoided.

Furthermore, the refrigerator provided by the invention has the advantages that the deoxidizing component is opposite to the air return opening of the refrigerator, so that the return air flow of the refrigerator can at least partially flow through the surface of the deoxidizing component, and more reactants can be provided for the deoxidizing component due to the fact that the return air flow carries more water vapor, and the deoxidizing efficiency of the deoxidizing component is improved.

Furthermore, the refrigerator of the invention can provide the water vapor required by the electrochemical reaction for the oxygen removing component by the return air flow, and the oxygen removing component can remove oxygen in the storage container and simultaneously reduce the water vapor content in the return air flow, thereby reducing the frosting amount of the evaporator.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic view of a refrigerator according to one embodiment of the present invention;

FIG. 2 is a schematic view of a storage device and a duct cover in a refrigerator according to one embodiment of the present invention;

FIG. 3 is an exploded view of the storage device in the refrigerator shown in FIG. 2;

FIG. 4 is a schematic view illustrating a cylinder of a storage container in the storage device of the refrigerator shown in FIG. 3;

FIG. 5 is a schematic view of an oxygen scavenging assembly in the storage device of the refrigerator shown in FIG. 3;

FIG. 6 is another schematic view of the oxygen scavenging assembly in the storage device of the refrigerator shown in FIG. 3;

FIG. 7 is a schematic view of a moisture permeable assembly in the storage device of the refrigerator shown in FIG. 3;

fig. 8 is a schematic view of a tray of a moisture permeable assembly in the storage device of the refrigerator shown in fig. 7;

FIG. 9 is an enlarged view of a portion of FIG. 8 at A;

fig. 10 is an exploded view of a moisture permeable film assembly of a moisture permeable assembly in the storage device of the refrigerator shown in fig. 7;

FIG. 11 is a schematic view of an air-conditioned hood in the storage device of the refrigerator shown in FIG. 3;

fig. 12 is a control flowchart of a refrigerator according to an embodiment of the present invention.

Detailed Description

Fig. 1 is a schematic view of a refrigerator 10 according to an embodiment of the present invention, fig. 2 is a schematic view of a storage device 100 and a duct cover 130 in the refrigerator 10 according to an embodiment of the present invention, and fig. 3 is an exploded view of the storage device 100 in the refrigerator 10 shown in fig. 2. In this embodiment, the refrigerator 10 may be an air-cooled refrigerator 10, and the air-cooled refrigerator 10 cools the storage compartment by using air flow circulation.

The refrigerator 10 may generally include an inner container 102, an evaporator 103, an air duct cover 130, a storage container 200, a moisture permeable assembly 300, an oxygen removal assembly 400, a controllable damper 133, an air guide fan 600, an air conditioned cover 700, a humidity sensor 260, and an oxygen concentration sensor 250. The storage container 200, the moisture permeable assembly 300, the oxygen removing assembly 400, the wind guiding fan 600 and the air conditioned hood 700 can be integrated into a whole to form the storage device 100.

The inner container 102 has a storage compartment 110 formed therein, and an air duct 105 is formed on the rear side of the storage compartment 110. In this embodiment, the storage compartment 110 may be one and a refrigerating compartment, and in alternative embodiments, the storage compartment 110 may be multiple and include a refrigerating compartment and a freezing compartment. The air supply duct 105 is communicated with the storage compartment 110 through an air supply opening, an air return opening 131 is arranged between the storage compartment 110 and the inner container 102, for example, the air return opening 131 may be arranged between the storage compartment 110 and the back wall of the inner container 102, air supply airflow after heat exchange with the evaporator 103 enters the storage compartment 110 through the air supply opening, flows through the storage compartment 110 and then flows into the air return opening 131, and a flow channel of the air supply airflow forms the air supply duct 105.

And an air duct cover 130 disposed at a front side of the back wall of the inner container 102 to define the air supply duct 105 with the back wall of the inner container 102, wherein the air return opening 131 is located on the air duct cover 130 and at a bottom of the air duct cover 130.

The storage container 200 is disposed in the storage compartment, and preferably, may be disposed at the bottom of the refrigerating compartment. The storage container 200 may be a drawer, the interior of which forms a storage space 213, and which includes a cylinder 211 having a front opening and a drawer body 212 drawably disposed in the cylinder. The back wall of the storage container 200 is adjacent to the duct cover 130.

Fig. 4 is a schematic view of the cylinder 211 of the storage container 200 in the storage device 100 of the refrigerator 10 shown in fig. 3.

The back of the storage container 200 has a mounting frame 226 protruding backward, and the mounting frame 226 is configured to protrude gradually along the upward extending direction, so as to form an inclined angle with the back of the storage container 200, that is, the side of the mounting frame 226 facing away from the storage space 213 is configured to be inclined downward. The top surface of the storage container 200 is provided with a ventilation area, and the ventilation area is provided with through holes arranged in an array manner.

The storage container 200 is provided with a ventilation region and a non-ventilation region on the top surface thereof. The ventilative region sets up the intermediate position at the top surface, and the region between the periphery of ventilative region and top surface is non-ventilative region. In this embodiment, the top surface of the storage container 200 may have a rectangular shape, and the ventilation area may have a rectangular shape. The through holes 223 arranged in an array are formed in the ventilation area, and gas in the storage container 200 can escape from the through holes 223. The non-breathable area is in a closed state, and a plurality of screw hole columns 224 are arranged on the non-breathable area and are used for being connected and fixed with an external component.

Fig. 5 is a schematic view of the oxygen scavenging assembly 400 in the storage device 100 of the refrigerator 10 shown in fig. 3, and fig. 6 is another schematic view of the oxygen scavenging assembly 400 in the storage device 100 of the refrigerator 10 shown in fig. 3.

The oxygen removing assembly 400 is arranged on the storage container 200 and is opposite to the air return opening 131; the oxygen scavenging assembly 400 has an oxygen consuming portion 420 facing the interior of the container 200 for consuming oxygen through an electrochemical reaction, and an electrolysis portion 410 facing the exterior of the container 200 for electrolyzing water vapor outside the container 200 through an electrochemical reaction.

In this embodiment, the oxygen scavenging assembly 400 may be disposed at the back of the storage container 200 and be disposed at an angle within a mounting frame at the back of the storage container 200. Since the side of the mounting frame 226 facing away from the interior of the storage container 200 is disposed to be inclined downward, the side of the oxygen removing assembly 400 facing away from the interior of the storage container 200 is also disposed to be inclined downward and close to the air return opening 131. The oxygen consumption part 420 faces the inside of the storage container 200, and oxygen in the storage container 200 may contact the oxygen consumption part 420; and an electrolytic part 410 facing away from the inside of the storage container 200 and exposed to the outside of the storage container 200. A proton exchange membrane for transporting hydrogen ions may be disposed between the oxygen consuming part 420 and the electrolysis part 410.

That is, the oxygen removing assembly 400 performs an electrochemical reaction using water vapor outside the storage container 200 and oxygen inside the storage container 200 as reactants to reduce the oxygen content inside the storage container 200. The electrochemical reaction comprises two half reactions which respectively occur in an electrolysis part 410 and an oxygen consumption part 420, the electrolysis part 410 electrolyzes water vapor outside the storage container 200 under the action of electrolysis voltage to generate hydrogen ions and oxygen, a proton exchange membrane is configured to transport the hydrogen ions from one side of the electrolysis part 410 to one side of the oxygen consumption part 420, and the oxygen consumption part 420 promotes the hydrogen ions generated by the electrolysis part 410 and the oxygen inside the storage container 200 to generate water through electrochemical reaction to consume the oxygen inside the storage container 200 under the action of the electrolysis voltage, so that a low-oxygen fresh-keeping environment is formed inside the storage container 200.

The oxygen scavenging assembly 400 is positioned opposite the return air inlet 131 of the refrigerator 10 to allow the return air stream from the refrigerator 10 to flow at least partially over the surface of the oxygen scavenging assembly 400 to provide more reactant to the oxygen scavenging assembly 400 due to the greater moisture vapor carried in the return air stream, thereby increasing the oxygen scavenging efficiency of the oxygen scavenging assembly 400.

Because the return air stream can provide the oxygen removal assembly 400 with the water vapor needed to perform the electrochemical reaction, the oxygen removal assembly 400 removes oxygen from the interior of the storage container 200 while also reducing the water vapor content of the return air stream and reducing the amount of frost on the evaporator 103.

In this embodiment, the oxygen removing assembly 400 may further include two elastic plates respectively disposed on a side of the electrolysis portion 410 facing away from the proton exchange membrane and a side of the oxygen consuming portion 420 facing away from the proton exchange membrane, for being connected to other structures to achieve fixation. The middle part of the elastic plate is hollowed out so that the electrolysis part 410 and the oxygen consumption part 420 can be in contact with the surrounding air.

Because the oxygen scavenging assembly 400 operates to scavenge oxygen from the storage container 200 while also generating water, operation of the oxygen scavenging assembly 400 increases the humidity within the storage container 200. The moisture accumulation inside the storage container 200 may increase the humidity, and suitably increasing the humidity is advantageous to improve the freshness-keeping effect of the storage container 200. However, when the humidity in the container 200 is too high, if the oxygen removing assembly 400 is continuously operated without taking measures to remove the humidity from the container 200, the condensation may drip, and the storage environment may be deteriorated.

In some optional embodiments, the refrigerator 10 may further include: and the heating assembly is arranged in a channel between the oxygen removal assembly 400 and the air return opening 131 and is configured to heat the return air flow flowing to the air return opening 131 in the storage compartment 110 in the humidifying mode. The heating assembly enters a humidification mode in a state that the refrigeration system of the refrigerator 10 stops operating and after the oxygen removal assembly 400 is started up, so that the humidity of the space where the electrolysis part 410 is located is increased, the electrochemical reaction rate of the oxygen removal assembly 400 is improved, and further the oxygen removal efficiency is improved. After the heating assembly enters the humidifying mode, the humidifying mode exits when the heating time of the heating assembly is greater than or equal to the preset heating time.

Fig. 7 is a schematic view of a moisture permeable assembly 300 in the storage device 100 in the refrigerator 10 shown in fig. 3.

The moisture permeable module 300 is disposed on the storage container 200, and preferably, may be disposed above the storage container 200 and spaced apart from the oxygen removing module 400, and is configured to allow water vapor in the storage container 200 to permeate. The moisture permeable assembly 300 can cover the air permeable area to seal the air permeable area. The moisture permeable assembly 300 is configured to allow water vapor in the storage container 200 to slowly permeate and be discharged to the outside of the storage container 200, so that the humidity in the storage container 200 can be always kept in a proper range, and condensation or dripping caused by excessive water in the space can be prevented.

In particular, to facilitate rapid discharge of water vapor in the storage container 200, the air supply duct 105 of the refrigerator 10 of the embodiment is provided with an air induction opening 132 for supplying air to the moisture permeable component 300, and the air induction opening 132 is configured to allow the air flow in the air supply duct 105 to enter the storage compartment 110 and flow through the side of the moisture permeable component 300 facing away from the interior of the storage container 200 (i.e., the upper surface of the moisture permeable component 300) in the moisture permeable mode, so that a dry environment is formed outside the storage container 200.

The position of the induced draft opening 132 can be set according to actual needs, for example, the induced draft opening 132 can be located on the air duct cover plate 130, and the bottom end of the induced draft opening 132 is higher than the upper surface of the moisture permeable assembly 300.

An air induction opening 132 is formed in the air duct cover plate 130, and the air induction opening 132 is communicated with the storage compartment 110 and the air supply air duct 105, so that a channel is provided for gas exchange between the storage compartment 110 and the air supply air duct 105, and the gas exchange is facilitated. Because the steam content in the air flow after heat exchange with the evaporator 103 is low, the dry air flow in the air supply duct 105 enters the storage compartment 110 through the air induction opening 132 and flows through the upper surface of the moisture permeable component 300, and the humidity of the space where the upper surface of the moisture permeable component 300 is located can be reduced.

In the present embodiment, the humidity sensor 260 is used to monitor the humidity inside the storage container 200, and the controllable damper 133 is used to control the opening and closing of the induced draft opening 132.

A humidity sensor 260 disposed inside the storage container 200 and configured to detect humidity inside the storage container 200 every first preset time when the oxygen removing assembly 400 operates; the humidity sensor 260 may be disposed on a sidewall of the inside of the storage container 200.

A controllable damper 133 disposed at the induced air opening 132, configured to enter the moisture permeable mode and open the induced air opening 132 when the humidity in the storage container 200 is greater than a first preset humidity threshold, and configured to close the induced air opening 132 when the humidity in the storage container 200 is less than a second preset humidity threshold, and the first preset humidity threshold is greater than the second preset humidity threshold. That is, when the humidity in the storage container 200 is low (lower than the second preset humidity threshold), the air-inducing opening 132 is closed by the controllable damper 133, and the air flow in the air-supply duct 105 cannot enter the storage compartment 110 through the air-inducing opening 132; when the humidity in the storage container 200 is high (higher than a first preset humidity threshold), the induced air opening 132 is opened by the controllable air door 133, and the air flow in the air supply duct 105 enters the storage compartment 110 through the induced air opening 132 and flows through the upper surface of the moisture permeable assembly 300; the arrangement of the controllable damper 133 is well known to those skilled in the art and will not be described herein.

The air inlet 132 for supplying air to the moisture permeable component 300 is arranged on the air supply duct 105, so that dry air flow is enabled to flow through the upper surface of the moisture permeable component 300, a dry environment is formed above the moisture permeable component 300, the humidity difference between the inside and the outside of the storage container 200 can be increased, the moisture permeable efficiency of the moisture permeable component 300 is improved, and the condensation or dripping phenomenon generated inside the storage container 200 can be reduced or avoided.

An air guide fan 600 may be disposed in the channel between the induced air opening 132 and the moisture permeable assembly 300, and configured to promote the formation of an air flow blowing from the induced air opening 132 to the upper surface of the moisture permeable assembly 300, that is, the water vapor in the air supply duct 105 is sent to the upper surface of the moisture permeable assembly 300 through the induced air opening 132. The bottom end of the air inducing opening 132 is higher than the upper surface of the moisture permeable assembly 300, and the air inducing fan 600 is opposite to the air inducing opening 132. The air guiding fan 600 can be fixed at any position in the channel from the air guiding opening 132 to the moisture permeable component 300, for example, can be fixed above the storage container 200 and is arranged at a distance from the moisture permeable component 300; or may be fixed to the end of the moisture permeable assembly 300 near the air inducing port 132.

In this embodiment, the wind guide fan 600 may be a micro axial flow fan. The wind guide fan 600 can be fixed by any method according to needs, for example, the wind guide fan can be fixed on a fan bracket, and then the fan bracket is fixed on the moisture permeable assembly 300.

The air guiding fan 600 is disposed in the channel between the air inducing opening 132 and the moisture permeable assembly 300, and is opposite to the air inducing opening 132, so that the air flow in the air supply duct 105 can enter the storage compartment 110 from the air inducing opening 132 and blow toward the upper surface of the moisture permeable assembly 300. By means of the mutual matching of the controllable air door 133 and the air guide fan 600, the humidity of the space where the upper surface of the moisture permeable component 300 is located can be reduced, the moisture vapor in the storage container 200 can be rapidly seeped out through the moisture permeable component 300, and the moisture permeable efficiency is improved.

The moisture permeable assembly 300 may include a support plate 310 and a moisture permeable film set 320. And a support plate 310 covering the air permeable region to form a skeleton of the moisture permeable module 300.

Fig. 8 is a schematic view of a support plate 310 of a moisture permeable assembly 300 in the storage device 100 in the refrigerator 10 shown in fig. 7, and fig. 9 is a partially enlarged view at a in fig. 8.

An accommodating cavity 312 is formed at the position of the supporting plate 310 facing the upper part of the air permeable area, a plurality of limiting claws 314 are arranged on the side wall of the accommodating cavity 312, and the moisture permeable membrane group 320 is limited in the accommodating cavity 312 by the plurality of limiting claws 314. That is, the moisture permeable film assembly 320 is disposed between the air permeable region and the supporting plate 310, and the plurality of limiting claws 314 clamp the moisture permeable film assembly 320 in the accommodating cavity 312. The bottom wall of the accommodating cavity 312 is also correspondingly provided with through holes 315 arranged in an array, and the through holes 315 are configured to allow water vapor permeated and exhausted through the moisture permeable membrane group 320 to be exhausted from the through holes 315.

The position and the shape of the accommodating cavity 312 correspond to those of the ventilation area, and the supporting plate 310 can be directly covered above the top surface of the storage container 200 to realize quick installation, so that the installation steps are simplified, the operation is simple and convenient, and the installation difficulty is low.

Fig. 10 is an exploded view of the moisture permeable film assembly 320 of the moisture permeable assembly 300 in the storage device 100 of the refrigerator 10 shown in fig. 7.

And a moisture permeable film group 320 arranged between the air permeable area and the support plate 310 and located in the accommodating cavity 312 of the support plate 310, configured to allow water vapor in the storage container 200 to permeate and discharge, and including a moisture permeable film 321 and a moisture permeable bottom plate 322.

The moisture permeable film 321 is configured to allow water vapor in the storage container 200 to slowly permeate therethrough and be discharged to the outside of the storage space 213, so that the humidity in the storage container 200 is always maintained within a suitable range, and condensation or dripping due to excessive moisture in the space is prevented. In this embodiment, the moisture permeable film 321 may be a pervaporation film, and has a hydrophilic layer and a hydrophobic layer, one side of the hydrophilic layer facing away from the hydrophobic layer is exposed above the air permeable area, i.e., faces the air permeable area, one side of the hydrophobic layer facing away from the hydrophilic layer faces away from the air permeable area, and water vapor in the storage container 200 can permeate through the moisture permeable film 321 and be discharged to the outside of the storage container 200. The moisture permeable film 321 can prevent the permeation of other gases while allowing the permeation of water vapor, thereby preventing the exchange of gases between the inside and the outside of the container 200.

The appearance of the moisture permeable film 321 is matched with the appearance of the bottom wall of the accommodating cavity 312, the accommodating cavity 312 can be just sealed, and the closed space formed by the moisture permeable film 321 and the supporting plate 310 can block the gas exchange between the breathable area and the outside of the closed space, so that the moisture permeable film 321 is arranged between the breathable area and the supporting plate 310, the storage container 200 can be enabled to keep a relatively closed state, the maintenance of good fresh-keeping atmosphere is facilitated, and the fresh-keeping effect is improved.

The moisture permeable base plate 322 is disposed adjacent to the bottom of the moisture permeable film 321 to support the moisture permeable film 321, and can prevent the moisture permeable film 321 from being deformed due to the influence of gravity. If the moisture permeable film 321 deforms, a gap may be formed between the moisture permeable film 321 and the sidewall of the accommodating cavity 312, so that a closed space cannot be formed between the moisture permeable film 321 and the supporting plate 310, and the fresh-keeping effect of the storage container 200 is reduced. The moisture-permeable bottom plate 322 is also correspondingly provided with through holes 540 arranged in an array, and the positions and the sizes of the through holes 540 are matched with those of the through holes 315 on the bottom wall of the accommodating cavity 312 and configured to allow the gas escaping from the gas-permeable area to pass through.

In this embodiment, the wind guide fan 600 may be fixed on the outer circumference of the support plate 310 and adjacent to the moisture permeable film group 320.

Fig. 11 is a schematic view of a damper air register 700 in the storage device 100 of the refrigerator 10 shown in fig. 3.

The modified atmosphere hood 700 covers the moisture permeable assembly 300, and a space for airflow from the air inlet 132 to the upper surface of the moisture permeable assembly 300 is enclosed between the modified atmosphere hood 700 and the moisture permeable assembly 300, and the modified atmosphere hood 700 includes a hood top 710, a hood wall 720, and a flow guide strip 722.

The cover top 710 is spaced from the moisture-permeable member 300 to provide a flow space for the air flow blown from the air inlet 132 to the upper surface of the moisture-permeable member 300.

A cover wall 720 formed by extending downwards from the edge of the cover top 710, and the cover wall 720 positioned at the back of the modified atmosphere hood 700 is provided with a modified atmosphere port 721 communicated with the air induction port 132, and the modified atmosphere port 721 is opposite to the air induction port 132; the edge of the modified atmosphere opening 721 is formed with a protrusion protruding rearward in the horizontal direction, and the protrusion may be partially inserted into the air introduction opening 132 so that the modified atmosphere opening 721 communicates with the air introduction opening 132. The air guiding fan 600 is located in front of the air adjusting vent 721 to promote the air flow to blow to the electrolysis part 410 on the upper surface of the moisture permeable assembly 300 through the air guiding vent 132 and the air adjusting vent 721. In the present embodiment, the induced draft port 132 and the air-conditioned port 721 may be rectangular; the projection may be a rectangular parallelepiped having a forward opening and a rearward opening.

A flow guide bar 722 configured to guide the air flow entering the modified atmosphere hood 700 from the modified atmosphere opening 721 to the electrolysis part 410 on the upper surface of the moisture permeable member 300. The middle part of the air-conditioned tuyere 721 is provided with a vertical connecting rod, and the vertical connecting rod is connected between the top edge and the bottom edge of the air-conditioned tuyere 721 to divide the air-conditioned tuyere 721 into two parts; the guide strips 722 horizontally extend forwards from the vertical connecting rods; the air guide strips 722 can be arranged into a curved surface as required, and the air flow entering between the cover top 710 and the moisture permeable component 300 from the air adjusting opening 721 is guided by the curved surface of the air guide strips 722 to blow towards the electrolysis part 410 on the upper surface of the moisture permeable component 300. In the present embodiment, the cover top 710, the cover wall 720 and the guide strips 722 may be integrally formed; the bottom of the cover wall 720 is connected with the edge of the moisture permeable component 300, so that the moisture permeable component 300, the cover wall 720 and the cover top 710 form a relatively closed space for air flow circulation.

The rate of the electrochemical reaction is related to the concentration of the reactant, and a suitable concentration of the reactant is beneficial to promote a high efficiency of the electrochemical reaction. If the water vapor content in the vicinity of the oxygen scavenging assembly 400 is insufficient during operation, it means that the electrochemical reaction is taking place at a lower concentration of reactants and, correspondingly, at a lower rate or even no electrochemical reaction at all.

In this embodiment, the deoxidizing component 400 is located at the back of the storage container 200, the moisture permeable component 300 is located above the top surface of the storage container 200, the deoxidizing component 400 and the moisture permeable component 300 are arranged at intervals, when the humidity of the upper surface of the moisture permeable component 400 is reduced by using the airflow in the air supply duct 105, the water vapor content near the deoxidizing component 400 is not affected, that is, the electrochemical reaction efficiency of the deoxidizing component 400 is not affected, and the influence of the dehumidifying process on the deoxidizing efficiency of the deoxidizing component 400 can be reduced or avoided.

The moisture permeable assembly 300 is integrated above a breathable area on the top surface of the storage container 200, and is configured to allow water vapor in the storage container 200 to permeate and discharge, the oxygen removing assembly 400 is installed in an installation frame on the back of the storage container 200, and is configured to consume oxygen in the storage container 200 through electrolytic reaction under the action of electrolytic voltage, so that a low-oxygen atmosphere can be formed in the storage container 200, condensation or water dripping caused by excessive water vapor can be prevented, and the fresh-keeping effect of the storage container 200 is improved.

The refrigerator 10 of the present embodiment further includes a plurality of sets of fastening screws to fix and clamp the multi-layer components. The supporting plate 310 of the moisture permeable assembly 300 can be fixed on the top surface of the storage container 200 in any manner according to actual needs, for example, by screwing. The periphery of the ventilation area is provided with a plurality of screw hole columns 224, and the positions of the supporting plate 310 corresponding to the screw hole columns 224 are respectively provided with screw holes 316 so as to fix the supporting plate 310 on the storage container 200 in a screwing mode, so that the supporting plate 310 is tightly attached to the top surface of the storage container 200, and the sealing effect is enhanced.

The modified atmosphere hood 700 of the storage container 200 can be mounted on the top surface of the storage container 200 in any manner according to actual requirements, for example, a slot can be formed in the non-air-permeable region on the top surface of the storage container 200, a clip strip can be arranged at the bottom of the cover wall 720 of the modified atmosphere hood 700, the shape of the clip strip is matched with the shape of the slot, and the modified atmosphere hood 700 can be mounted and fixed by inserting the clip strip into the slot.

The oxygen concentration sensor 250 is disposed inside the storage container 200, for example, may be disposed on a sidewall, and configured to detect the oxygen concentration inside the storage container 200 at every second predetermined time.

The oxygen scavenging assembly 400 selects either the start-up oxygen scavenging function or the stop-brake function depending on the oxygen concentration in the container 200, i.e., the actual oxygen scavenging demand.

In this embodiment, the oxygen scavenging assembly 400 is turned on when the oxygen concentration in the container 200 is greater than a predetermined oxygen concentration threshold, so as to reduce the oxygen concentration in the container 200 through an electrochemical reaction.

In the process that the door of the refrigerator 10 is opened, gas exchange between the inside and the outside of the storage compartment 110 may occur, and the low-oxygen fresh-keeping atmosphere in the storage container 200 may be damaged, so that the oxygen removing assembly 400 is still required to be started in a state that the door of the refrigerator 10 is kept closed, and the oxygen concentration sensor 250 is further configured to detect the oxygen concentration in the storage container 200 every second preset time after the door of the refrigerator 10 is closed. In this embodiment, the electrolysis portion 410 and the oxygen consumption portion 420 of the oxygen removal assembly 400 may be connected to the control circuit by wires, and the control circuit of the refrigerator 10 provides the electrolysis voltage thereto. In alternative embodiments, the electrolytic voltage of the oxygen scavenging assembly 400 may also be provided by a battery, with the electrolysis portion 410 and the oxygen-consuming portion 420 in communication with the anode and cathode, respectively, of the battery, and the oxygen scavenging assembly 400 may be placed in an electrolytic operating state. If oxygen removal is not required inside the storage container 200, the connection circuit may be disconnected.

After the oxygen removing assembly 400 is started, under the action of the electrolysis voltage, the electrolysis part 410 electrolyzes the water vapor outside the storage container 200 into oxygen and hydrogen ions, and the oxygen consumption part 420 generates water by using the hydrogen ions generated by the electrolysis part 410 and the oxygen inside the storage container 200 as reactants. As the operation time is extended, if the water vapor permeation rate of the moisture permeation member 300 is lower than the water vapor generation rate of the oxygen consuming part 420, the water vapor content inside the storage container 200 may be increased.

The humidity sensor 260 is utilized to detect the humidity in the storage container 200 every first preset time when the oxygen removing assembly 400 is operated, so that the water vapor content in the storage container 200 can be monitored.

When the humidity in the storage container 200 is greater than the first preset humidity threshold, the amount of water vapor accumulated in the storage container 200 is too much, and the refrigerator 10 needs to start the moisture permeable mode, so that the moisture permeable efficiency of the moisture permeable assembly 300 is improved, the rapid discharge of the water vapor in the storage container 200 through the moisture permeable assembly 300 is accelerated, and the generation of condensation or water dripping in the storage container 200 is prevented. In the defrosting mode, the humidity in the air supply duct 105 is high, and the air flow with high humidity in the air supply duct 105 cannot be guided to the upper surface of the moisture permeable assembly 300, so that the refrigerator 10 can start the moisture permeable mode in the non-defrosting mode and when the humidity in the storage container 200 is higher than the first preset humidity threshold value. When the operation state of the refrigerator 10 meets the condition of entering the moisture permeable mode, correspondingly, the controllable damper 133 opens the air induction port 132 to form an air flow passage between the air supply duct 105 and the upper surface of the moisture permeable module 300, the air guide fan 600 is started to promote the dry air flow in the air supply duct 105 to blow from the air induction port 132 to the upper surface of the moisture permeable module 300, the dry air flow from the air supply duct 105 can take away part of the water vapor in the space when flowing through the space on the upper surface of the moisture permeable module 300, so as to reduce the humidity in the space, thereby increasing the humidity difference between the space on the upper surface and the space on the lower surface of the moisture permeable module 300 (i.e., the space inside the storage container 200), and promoting the water vapor in the storage container 200 to rapidly seep out to the outside of the storage container 200 through the moisture.

When the humidity in the storage container 200 is less than the second preset humidity threshold, the content of the water vapor in the storage container 200 is low, the refrigerator 10 needs to exit the moisture permeable mode, accordingly, the controllable air door 133 closes the air inducing port 132, and the air inducing fan 600 is stopped.

The oxygen scavenging assembly 400 is shut down when its operating time is greater than or equal to a preset operating time.

During operation of the oxygen scavenging assembly 400, as the container 200 is relatively closed, the oxygen content continues to decrease, resulting in a decrease in the concentration of the reactant that electrochemically reacts with the oxygen scavenging assembly 400, which in turn decreases the efficiency of the electrochemical reaction or even does not electrochemically react at all. When the operating time of the oxygen scavenging assembly 400 is greater than or equal to the predetermined operating time, meaning that the electrolytic efficiency of the oxygen scavenging assembly 400 is already low, the electrochemical reaction of the oxygen scavenging assembly 400 needs to be terminated to avoid wasting too much electrical energy while compromising the life of the oxygen scavenging assembly 400.

The length of time of predetermineeing of deoxidization subassembly 400 can set up according to actual demand to in this length of time of predetermineeing, the oxygen concentration in the storage container 200 can reduce to predetermineeing below the reasonable concentration threshold value, can reach predetermined fresh-keeping atmosphere when the oxygen concentration in the storage container 200 is less than this and predetermines reasonable concentration threshold value.

Fig. 12 is a control flowchart of the refrigerator 10 according to one embodiment of the present invention.

Step S1202, a closing signal of the door of the refrigerator 10 is acquired. After the door of the refrigerator 10 is closed or kept closed, a closed space is formed in the storage container 200, so that a low-oxygen fresh-keeping environment can be quickly formed.

In step S1204, the oxygen concentration in the storage container 200 detected by the oxygen concentration sensor 250 is acquired. The oxygen concentration sensor 250 detects the oxygen concentration in the storage container 200 every second preset time while the door of the refrigerator 10 is kept closed.

Step S1206, judging whether the oxygen concentration is greater than a preset oxygen concentration threshold value, if so, executing step S1208, which means that the preservation effect of the storage environment in the storage container 200 is poor and oxygen needs to be removed; if not, the process returns to step S1204, and the oxygen concentration is obtained again after a second preset time interval.

In step S1208, the oxygen scavenging assembly 400 is turned on. After the oxygen removing assembly 400 is powered on, under the action of the electrolysis voltage, the electrolysis part 410 electrolyzes the water vapor outside the storage container 200 to generate hydrogen ions and oxygen, and the oxygen consumption part 420 generates water by using the oxygen in the storage container 200 and the hydrogen ions generated by the electrolysis part 410 as reactants.

In step S1210, humidity in the storage container 200 detected by the humidity sensor 260 is acquired.

Step S1212, determining whether the humidity is greater than a first preset humidity threshold, if so, performing step S1214, which means that the moisture permeation efficiency of the moisture permeation assembly 300 needs to be improved; if not, step S1222 is executed to further determine whether the shutdown condition of the oxygen removing assembly 400 is reached.

Step S1214, determining whether the refrigerator 10 meets the condition of entering the moisture permeable mode, that is, further determining whether the refrigerator 10 is in the defrosting non-mode, if yes, performing step S1216, entering the moisture permeable mode, and reducing the humidity of the space where the upper surface of the moisture permeable assembly 300 is located by using the airflow in the air supply duct 105; if not, step S1224 is executed, which means that the evaporator 103 is frosted, the humidity in the air duct 105 is high, the air flow in the air duct 105 with high humidity is guided to the space where the upper surface of the moisture permeable assembly 300 is located, and the humidity in the space cannot be reduced, and at this time, the refrigerator 10 does not meet the condition of entering the moisture permeable mode, and in order to avoid the occurrence of condensation or water dripping in the space, the oxygen removing assembly 400 should be turned off.

Step S1216, entering the moisture permeable mode, the controllable damper 133 opens the induced air opening 132, and the induced air fan 600 is turned on. The wind guiding fan 600 guides the dry airflow in the air supply duct 105 from the wind guiding opening 132 to the space where the upper surface of the moisture permeable assembly 300 is located through the air adjusting opening 721, so as to reduce the humidity in the space where the upper surface of the moisture permeable assembly 300 is located.

In step S1218, it is determined whether the refrigerator 10 meets the condition of exiting the moisture permeable mode, if yes, step S1220 is executed, and the condition of exiting the moisture permeable mode of the refrigerator 10 includes: the humidity in the storage container 200 is less than a second preset humidity threshold (the first preset humidity threshold is greater than the second preset humidity threshold), and/or the refrigerator 10 enters a defrosting mode; if not, the process returns to step S1218, and the air flow in the air duct 105 is continuously utilized to dehumidify the space where the upper surface of the moisture permeable assembly 300 is located.

Step S1220, the moisture permeable mode is exited, the air inducing port 132 is closed by the controllable air door 133, and the air inducing fan 600 is turned off.

Step S1222, determining whether the shutdown condition of the oxygen removal assembly 400 is reached, if yes, executing step SS 1224; if not, the process returns to step S1210, and the humidity inside the storage container 200 is continuously monitored during the operation of the oxygen removing assembly 400.

In step S1224, the oxygen scavenging assembly 400 is shut down. Under the storing container 200 keeps closed state, when the operating duration of deoxidization subassembly 400 is more than or equal to and predetermines the operating duration, can reduce the oxygen concentration in the storing container 200 to predetermineeing below the reasonable concentration threshold value, in order to avoid consuming too much electric energy, the deoxidization subassembly stops.

In particular, if the storage container 200 is opened, the oxygen scavenging assembly 400 is deactivated or remains deactivated.

In the refrigerator of the present embodiment, the oxygen removing assembly 400 is disposed on the storage container 200 and configured to consume oxygen inside the storage container 200 through an electrochemical reaction; the storage container 200 is further provided with a moisture permeable assembly 300 configured to allow water vapor in the storage container 200 to permeate; the air supply duct 105 is provided with an air inlet 132 for supplying air to the moisture permeable assembly 300, and is configured to allow the air flow in the air supply duct 105 to enter the storage compartment 110 and flow through the upper surface of the moisture permeable assembly 300 in the moisture permeable mode. Because the oxygen consumption part 420 of the oxygen removal assembly 400 also generates water during the electrochemical reaction, in the embodiment, the air supply duct 105 is provided with the air induction port 132 for supplying air to the moisture permeable assembly 300, so that dry airflow flows through the upper surface of the moisture permeable assembly 300, a dry environment is formed above the moisture permeable assembly 30, the humidity difference between the inside and the outside of the storage container 200 can be increased, the moisture permeable efficiency of the moisture permeable assembly 300 is improved, and the condensation or water dripping phenomenon generated inside the storage container 200 can be reduced or avoided.

It should be understood by those skilled in the art that, unless otherwise specified, terms used for indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", "front", "rear", and the like in the embodiments of the present invention are based on the actual use state of the refrigerator, and these terms are only used for convenience of describing and understanding the technical solution of the present invention, and do not indicate or imply that the device or component referred to must have a specific orientation, and thus, should not be construed as limiting the present invention.

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

Claims (10)

1. A refrigerator, comprising:

the inner container is internally provided with a storage compartment and an air supply duct;

the storage container is arranged in the storage chamber;

an oxygen removing assembly disposed on the storage container, and having an oxygen consuming portion facing the inside of the storage container and configured to consume oxygen through an electrochemical reaction, and an electrolysis portion facing the outside of the storage container and configured to electrolyze water vapor outside the storage container through the electrochemical reaction;

the moisture permeable component is arranged on the storage container, is arranged at a distance from the deoxidizing component, and is configured to allow water vapor in the storage container to seep out;

the air supply duct is provided with an air induction port for supplying air to the moisture permeable component, and the air induction port is configured to allow air flow in the air supply duct to enter the storage compartment and flow through the moisture permeable component back to the surface inside the storage container in a moisture permeable mode, so that a dry environment is formed outside the storage container.

2. The refrigerator of claim 1, further comprising:

the humidity sensor is arranged in the storage container and is configured to detect the humidity in the storage container every first preset time when the oxygen removing assembly operates;

the controllable air door is arranged at the air inducing opening and is configured to enter the moisture permeable mode and open the air inducing opening when the humidity in the storage container is greater than a first preset humidity threshold value.

3. The refrigerator of claim 2, wherein

The controllable damper is further configured to close the induced air opening when the humidity within the storage container is less than a second preset humidity threshold, and the first preset humidity threshold is greater than the second preset humidity threshold.

4. The refrigerator of claim 1, wherein

The deoxidization subassembly set up in the back of storing container.

5. The refrigerator of claim 4, wherein

An air return opening is formed between the storage chamber and the inner container;

the oxygen removal assembly is opposite to the air return opening.

6. The refrigerator of claim 5, further comprising:

the oxygen concentration sensor is arranged in the storage container and is configured to detect the oxygen concentration in the storage container every second preset time;

the deoxidization subassembly is in start-up when oxygen concentration in the storing container is greater than predetermineeing oxygen concentration threshold value to reduce through electrochemical reaction the oxygen concentration in the storing container.

7. The refrigerator of claim 6, wherein

The oxygen scavenging assembly is configured to shut down when its operational length is greater than or equal to a preset operating length.

8. The refrigerator of claim 3, wherein

The moisture permeable assembly is positioned above the storage container, and the refrigerator further comprises:

the air duct cover plate is arranged on the front side of the back wall of the inner container to define the air supply air duct together with the inner container; the air inlet is positioned on the air duct cover plate, and the bottom end of the air inlet is higher than the upper surface of the moisture permeable component.

9. The refrigerator of claim 8, further comprising:

an air guide fan arranged in a channel between the air induction port and the moisture permeable component and configured to promote the formation of air flow blown from the air induction port to the upper surface of the moisture permeable component; the air guide fan is configured to start after the controllable air door opens the air guide opening.

10. The refrigerator of claim 1, wherein

The storage container is a drawer, and comprises:

a barrel having a forward opening;

the drawer body is arranged in the cylinder in a drawable manner.

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