CN216694146U - Refrigerator with a door - Google Patents

Abstract

The utility model relates to a refrigerator, which comprises a refrigerator body, a partition plate and an oxygen control module; a partition board dividing the first storage chamber and the second storage chamber; the oxygen control module comprises a shell, a first valve, a second valve, a control panel and a metal air battery, wherein the shell is arranged on the partition board, the first valve, the second valve, the control panel and the metal air battery; the first valve is used for opening and closing the first channel; the second valve is used for opening and closing the second channel; the control board respectively controls the first valve and the second valve to work; the metal-air battery is arranged in the sealed cavity and used for consuming oxygen in the sealed cavity and discharging to the outside. Utilize the first valve of control panel control and second valve to open and close first passageway and second passageway respectively, the oxygen of cooperation metal-air battery absorption sealed intracavity, and then for first storeroom or second storeroom deoxidization, can also supply power outward when the deoxidization, improve the utilization ratio of the energy.

Description

Refrigerator with a door

Technical Field

The utility model relates to the technical field of refrigeration equipment, in particular to a refrigerator.

Background

With the improvement of living standard, people put forward higher requirements on the preservation quality of food materials, and the preservation of food is the most central function of a refrigerator. The current commonly used fresh-keeping means mainly comprise: modified atmosphere fresh-keeping, radiation fresh-keeping, electromagnetic field auxiliary fresh-keeping, pulse strong light fresh-keeping, coating fresh-keeping, biological antagonistic fresh-keeping, plant source preservative fresh-keeping and gene engineering technology fresh-keeping, etc.

The controlled atmosphere preservation technology is the most ideal fruit and vegetable storage technology recognized at present, and the purpose of storage and preservation is achieved by controlling the gas proportion. The principle is that in a certain closed system, regulating gas different from normal atmospheric components is obtained through various regulating modes, and various physiological and biochemical processes and activities of microorganisms which cause food spoilage are inhibited.

The air conditioning technology carried by the refrigerator on the market at present mainly comprises a membrane separation technology and a vacuum technology, wherein the membrane separation technology utilizes different permeation rates of components in air when the components penetrate through a membrane, under the driving of pressure difference, oxygen in the air is preferentially removed through the membrane, the nitrogen-oxygen separation rate of the technology is greatly influenced by membrane pores, the oxygen-nitrogen separation rate of a large-pore membrane is low, the pressure required by a small-pore membrane for use is higher, the nitrogen-oxygen separation rate is lower, partial nitrogen is removed simultaneously, the oxygen removal effect is reduced when the oxygen concentration is lower, the oxygen removal rate is slower due to the blockage of a molecular membrane in practical application because of the use environment, the membrane area needs to be increased for maintaining the oxygen removal rate, the oxygen control space is limited, in addition, an air suction pump is needed in the technology, and the noise problem exists during working. The vacuum technology is that the vacuum environment in the vacuum drawer is maintained at negative pressure, so that the oxygen content in the fresh-keeping chamber is less. The vacuum technology has high requirements on the mechanical property of the refrigerator drawer, so that the vacuum drawer faces higher cost, and the vacuum pump generates noise during working.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a refrigerator, which is used for optimizing the structure of the refrigerator in the prior art and improving the air-conditioning and fresh-keeping function effect of the refrigerator.

In order to solve the technical problems, the utility model adopts the following technical scheme:

according to an aspect of the present invention, there is provided a refrigerator including: the refrigerator body is internally provided with a first storage chamber and a second storage chamber which are separated; a partition plate provided in the cabinet and separating the first storage chamber and the second storage chamber; an oxygen control module, comprising: the shell is arranged on the partition board, a sealing cavity is arranged in the shell, and a first channel for communicating the sealing cavity with the first storage chamber and a second channel for communicating the sealing cavity with the second storage chamber are arranged on the shell; the first valve is movably arranged in the shell and is used for opening and closing the first channel; the second valve is movably arranged in the shell and is used for opening and closing the second channel; the control board is electrically connected with the first valve and the second valve respectively and is used for controlling the first valve and the second valve to work respectively; a metal-air cell disposed within the sealed cavity and configured to consume oxygen within the sealed cavity; and when the metal-air battery absorbs oxygen, the metal-air battery can discharge outwards.

In some embodiments of the present application, the metal-air battery is configured as a rechargeable air battery; and when charging, the metal-air battery generates oxygen and regenerates the metal-air battery to recover its ability to absorb oxygen.

In some embodiments of the present application, the oxygen control module further comprises a dc power supply; the metal-air battery comprises a positive electrode and a negative electrode; when discharging, the positive electrode and the negative electrode are used as output ends and used for supplying power to the outside; and when in charging, the direct current power supply is electrically connected with the positive electrode and the negative electrode so as to charge the metal-air battery.

According to some embodiments of the present application, a circuit switch is disposed between the dc power supply and the positive electrode or the negative electrode, and the circuit switch is configured to control on/off of a circuit between the dc power supply and the metal-air battery.

In some embodiments of the present application, the refrigerator further comprises a display screen; the display screen is arranged in the box body and is connected with the output end of the metal-air battery; when the metal-air battery absorbs oxygen and discharges, the display screen is used for detecting the discharge voltage of the metal-air battery and converting the detected voltage signal into the oxygen concentration in the sealed cavity for displaying.

In some embodiments of the present application, when the metal-air battery is charged, the display screen is configured to detect a charging voltage of the metal-air battery.

In some embodiments of the present application, the display screen displays an oxygen concentration having a lower concentration limit and an upper concentration limit; when the upper limit concentration is reached, the control panel controls the second valve to be opened and controls the first valve to be closed so as to remove oxygen from the sealed cavity of the metal-air battery and supply power to the outside through the output end; and at the lower limit concentration, the control board controls the second valve to close and controls the first valve to open, and charges the metal-air battery.

In some embodiments of the present invention, the first storage chamber and the second storage chamber are separately disposed at upper and lower sides of the partition; the shell is arranged on the bottom surface of the clapboard and is positioned at the top of the second storage chamber; the first channel is a plurality of first air holes formed in the partition plate; the second channel is a plurality of second air holes formed in the shell.

In some embodiments of the present application, the refrigerator further comprises a drawer movably disposed in the second storage compartment; the top of the drawer is open and is opposite to the shell.

In some embodiments of the present application, the metal-air battery includes a negative electrode, a positive electrode, an electrolyte, and a separator; the negative electrode is metal and is configured to lose electrons during discharge to generate corresponding metal cations; the anode is configured as a catalyst and is used for adsorbing oxygen in the air as an active substance and reducing the oxygen into hydroxide ions to enter the electrolyte; the electrolyte is configured to perform positive and negative ion transport between the negative electrode and the positive electrode; the diaphragm is arranged between the negative electrode and the positive electrode and separates the negative electrode from the positive electrode.

According to the technical scheme, the utility model has at least the following advantages and positive effects:

in the refrigerator, the first storage chamber and the second storage chamber in the refrigerator are separated by the partition board; forming a sealed cavity by utilizing the shell of the oxygen control module, and forming a first channel communicated with the first storage chamber and a second channel communicated with the second storage chamber; the control panel is used for controlling the first valve and the second valve to open and close the first channel and the second channel respectively, and the first valve and the second valve are matched with the metal-air battery to absorb and eliminate oxygen in the sealed cavity, so that oxygen can be removed from the first storage chamber or the second storage chamber; meanwhile, power can be supplied to the outside, and the utilization rate of energy is improved. The scheme does not need to consume electric energy when oxygen is consumed, is not influenced by environment humidity, and is less in energy loss and environment-friendly.

Drawings

Fig. 1 is a schematic structural view of a refrigerator according to an embodiment of the present invention.

Fig. 2 is a schematic view of the inside of the tank of fig. 1.

Fig. 3 is a bottom view of the separator plate of fig. 2.

Fig. 4 is a schematic view of the structure of fig. 3 from another perspective.

Fig. 5 is a sectional view a-a of fig. 3.

FIG. 6 is a control schematic of the oxygen control module of FIG. 5.

Fig. 7 is a control schematic of fig. 6.

The reference numerals are explained below: 1. a box body; 11. a refrigeration compartment; 111. a first storage chamber; 112. a second storage chamber; 12. a box liner; 13. a door body; 2. a partition plate; 3. a drawer; 4. a housing; 40. sealing the cavity; 401. a first air vent; 402. a second air hole; 41. a first valve; 42. a second valve; 5. a control panel; 6. a metal-air battery; 7. a direct current power supply; 71. a circuit switch; 8. a display screen.

Detailed Description

Exemplary embodiments that embody features and advantages of the utility model are described in detail below in the specification. It is to be understood that the utility model is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the utility model and the description and drawings are to be regarded as illustrative in nature and not as restrictive.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The air conditioning technology carried by the refrigerator on the market at present mainly comprises a membrane separation technology and a vacuum technology, wherein the membrane separation technology utilizes different permeation rates of components in air when the components penetrate through a membrane, under the driving of pressure difference, oxygen in the air is preferentially removed through the membrane, the nitrogen-oxygen separation rate of the technology is greatly influenced by membrane pores, the oxygen-nitrogen separation rate of a large-pore membrane is low, the pressure required by a small-pore membrane for use is higher, the nitrogen-oxygen separation rate is lower, partial nitrogen is removed simultaneously, the oxygen removal effect is reduced when the oxygen concentration is lower, the oxygen removal rate is slower due to the blockage of a molecular membrane in practical application because of the use environment, the membrane area needs to be increased for maintaining the oxygen removal rate, the oxygen control space is limited, in addition, an air suction pump is needed in the technology, and the noise problem exists during working. The vacuum technology is that the vacuum environment in the vacuum drawer is maintained at negative pressure, so that the oxygen content in the fresh-keeping chamber is less. The vacuum technology has high requirements on the mechanical property of the refrigerator drawer, so that the vacuum drawer faces higher cost, and the vacuum pump generates noise during working. For convenience of description, unless otherwise specified, the directions of the upper, lower, left, right, front and rear are all referred to herein as the state of the refrigerator in use, the door body of the refrigerator is front, the opposite direction is rear, and the vertical direction is up and down.

Fig. 1 is a schematic structural view of a refrigerator according to an embodiment of the present invention. Fig. 2 is a partial structural schematic diagram of fig. 1.

Referring to fig. 1 and 2, a refrigerator according to an embodiment of the present invention mainly includes a refrigerator body 1, a partition 2, a drawer 3, and an oxygen control assembly.

Wherein, the box body 1 adopts a cuboid hollow structure. It will be appreciated that other shapes of the hollow structure of the tank 1 may be used.

A plurality of mutually separated refrigerating compartments 11 can be arranged in the box body 1, and each separated refrigerating compartment 11 can be used as an independent storage space, such as a freezing compartment, a refrigerating compartment, a temperature changing compartment and the like, so as to meet different refrigerating requirements of freezing, refrigerating, temperature changing and the like according to different food types and store the food. The multiple refrigerating compartments 11 may be arranged to be vertically partitioned or to be horizontally partitioned. It should be noted that the space in the refrigerating compartment 11 may be further partitioned to be used as independent storage spaces, such as a freezing compartment and a refrigerating compartment.

A box container 12 is arranged in the box body 1, and a refrigerating chamber 11 is formed in the box container 12. It is understood that a plurality of container containers 12 may be disposed in the cabinet 1, and each container 12 may not form one or more refrigerating compartments 11.

The front side of the box body 1 is provided with a door body 13 for opening and closing the refrigeration compartment 11. The door body 13 and the refrigerator body 1 can be connected through a hinge, so that the door body 13 of the refrigerator can rotate around the axis, the door body 13 of the refrigerator is opened and closed, and the corresponding refrigerating chamber 11 is opened and closed. It is understood that the door 13 may be provided in plurality and in one-to-one correspondence with the cooling compartments 11. A plurality of door bodies 13 can open and close one refrigerating compartment 11 at the same time.

The partition 2 is arranged horizontally in the refrigeration compartment 11, i.e. horizontally in the tank liner 12. The spacer 2 may be used for layering articles. It is understood that the partition plates 2 may be provided in plural and arranged at intervals up and down.

The partition 2 divides the space of the refrigerating compartment 11 in the cabinet liner 12 into different storage compartments separated from each other up and down, such as a first storage compartment 111 distributed on the upper side of the partition 2 and a second storage compartment 112 distributed on the lower side of the partition 2.

It should be noted that, in some other embodiments, the partition board 2 may also be vertically arranged in the refrigeration compartment 11, so that the first storage chamber 111 and the second storage chamber 112 on two sides of the partition board 2 are arranged in a left-right isolation manner.

Referring to fig. 2, a drawer 3 is movably disposed in the refrigerating compartment 11, and the drawer 3 is used for storing food separately. The drawer 3 may be a cold storage drawer 3 or a freezer drawer 3.

Referring to fig. 2, in some embodiments, the drawer 3 is disposed right below the partition 2, i.e., in the second storage chamber 112. The top opening of the drawer 3 is such that when the drawer 3 is completely pushed into the second storage chamber 112, i.e. completely into the cabinet liner 12, the partition 2 can just cover the top opening of the drawer 3, thereby closing the space inside the drawer 3. At this time, the first storage chamber 111 above the barrier 2 may be a refrigerating chamber, and the second storage chamber 112 below the barrier 2, i.e., the space inside the drawer 3 may be a freezing chamber.

In some embodiments, rollers (not shown) are disposed on the drawer 3, and sliding rails (not shown) corresponding to the rollers are disposed on the inner wall of the inner container 12. The drawer 3 slides back and forth along the corresponding slide rail through the roller thereof, so that the drawer 3 can be smoothly pushed into the refrigeration compartment 11 or pulled out of the refrigeration compartment 11.

The oxygen control assembly is arranged in the box body 1 and used for controlling the content of oxygen in the refrigeration chamber 11, adjusting the oxygen concentration in the refrigeration chamber 11 and further prolonging the storage life of food materials. The fruit and vegetable food materials have biological activity during storage in the refrigerator, the oxygen concentration in the compartment is properly reduced, the carbon dioxide concentration is increased, the respiration inhibition effect is facilitated, the activity of microorganisms is reduced, and therefore the storage life of the fruit and vegetable food materials can be prolonged.

Fig. 3 is a bottom view of the separator 2 of fig. 2. Fig. 4 is a schematic view of the structure of fig. 3 from another perspective. Fig. 5 is a sectional view a-a of fig. 3.

Referring to fig. 3 to 5, the oxygen control assembly includes a housing 4, a first valve 41, a second valve 42, a control board 5, a metal-air battery 6, a dc power supply 7 and a display 8.

The housing 4 is provided on the bottom surface of the partition 2, is located in the second storage chamber 112, and is located right above the drawer 3. A sealed chamber 40 is formed in the case 4, and the sealed chamber 40 is used for mounting the metal-air battery 6. In some embodiments, the top of the housing 4 is open, and when the housing 4 is disposed on the bottom of the partition 2, the partition 2 can seal the top opening of the housing 4, thereby forming the sealed cavity 40 in the housing 4.

The top of the casing 4 and the area of the partition board 2 corresponding to the top of the casing 4 are provided with a plurality of first air holes 401, and the dense parts of the plurality of first air holes 401 are arranged in the top area of the casing 4 and used for communicating the sealing cavity 40 with the first storage chamber 111 above the partition board 2. That is, the plurality of first airing holes 401 are used as a first passage for communicating the sealed chamber 40 and the first storage chamber 111.

The bottom of the casing 4 is provided with a plurality of second ventilation holes 402, and the plurality of second ventilation holes 402 are densely arranged in the bottom area of the casing 4 and used for communicating the sealing cavity 40 with the second storage chamber 112 below the partition board 2, i.e. communicating the sealing cavity 40 with the inner space of the drawer 3. The plurality of first airing holes 401 serve as second passages for communicating the sealing chamber 40 and the second storage chamber 112.

Referring to fig. 5, the first valve 41 is movably disposed in the sealing chamber 40 and on the top surface of the sealing chamber 40. The first valve 41 is used to open or close the first vent 401, thereby controlling the opening or closing of the first passage between the sealed chamber 40 and the first storage chamber 111. Similarly, the second valve 42 is movably disposed in the sealed chamber 40 and is disposed on the bottom surface of the sealed chamber 40. The second valve 42 is used to open or close the second vent 402, thereby controlling the opening or closing of the second passage between the sealed chamber 40 and the second storage chamber 112. Therefore, the sealed chamber 40 of the casing 4 may be selectively communicated with the first storage chamber 111 or selectively communicated with the second storage chamber 112.

The control board 5 is disposed inside the case 1 and outside the housing 4. The control plate 5 is electrically connected to the first valve 41 and the second valve 42, respectively, so as to control the operation of the first valve 41 and the second valve 42, respectively. When the control panel 5 controls the first valve 41 to be opened and the second valve 42 to be closed, the sealed chamber 40 communicates only with the first storage chamber 111. When the control panel 5 controls the first valve 41 to be closed and the second valve 42 to be opened, the seal chamber 40 is communicated with only the second storage chamber 112.

It should be noted that the control board 5 may be integrated on the main control board of the refrigerator, or be independent of the main control board and disposed in the cabinet 1.

Referring to fig. 5, the metal-air battery 6 is disposed in the sealed cavity 40, and the metal-air battery 6 is used for generating an oxidation-reduction reaction to consume oxygen in the sealed cavity 40 at the positive electrode side, so as to reduce the oxygen concentration in the first storage chamber 111 or the second storage chamber 112 through the first channel or the second channel, thereby achieving the effects of inhibiting respiration of fruits and vegetables in the first storage chamber 111 or the second storage chamber 112, reducing consumption of nutrients, and improving the fresh-keeping effect of food. Meanwhile, when oxygen is consumed by the metal-air battery 6, the metal-air battery can discharge outwards, and released electric energy can be used for supplying power to low-power components inside the refrigerator, so that energy recycling is realized. Therefore, the metal-air battery 6 can be connected with a low-power load to supply power to some low-load elements in the refrigerator.

It is understood that in some embodiments, the metal-air battery 6 may also be connected to a low-power load through the control board 5, and then the low-power components of the load are powered through the control board 5.

The metal-air battery 6 mainly includes a positive electrode, a negative electrode, an electrolyte, and a separator.

The negative electrode is a metal material, and the metal material may include, but is not limited to, magnesium, aluminum, zinc, mercury, iron, and the like. When the metal material discharges, the metal negative electrode loses electrons to generate cations of the corresponding metal.

The positive electrode is made of noble metal Pt or carbon, and the positive electrode material is in contact with the air in the sealed cavity 40, so that the oxygen in the sealed cavity 40 obtains electrons on the positive electrode side, water or hydroxyl ions are generated, and the oxygen in the sealed cavity 40 is consumed.

The electrolyte is alkaline solution, the electrolyte is used for transmitting positive and negative ions in the metal-air battery 6, and the negative electrode material and the positive electrode material are both in contact with the electrolyte. Therefore, positive and negative ions can be transported between the negative electrode and the positive electrode material through the electrolyte.

The diaphragm is arranged in the electrolyte and positioned between the negative electrode and the positive electrode, so that the negative electrode and the positive electrode are prevented from being in direct contact to cause short circuit.

Specifically, taking a zinc-air battery as an example in the metal-air battery 6, a primary battery is composed of zinc as a negative electrode (anode) and a carbon rod as a positive electrode (cathode), and the electrode reaction in an alkaline environment is as follows:

and (3) cathode reaction: zn +2OH-2e^-＝ZnO+H₂O; and (3) positive pole reaction: 0.5O₂+H₂O+2e^-＝2OH^-。

The zinc of the negative electrode is oxidized into zinc oxide, and oxygen is absorbed and reduced into hydroxyl at the positive electrode. Oxygen participates in the reaction and is absorbed without generation of other gases, and a decrease in oxygen concentration within the sealed chamber 40 is achieved.

FIG. 6 is a control schematic of the oxygen control module of FIG. 5.

Referring to fig. 6, the dc power supply 7 is disposed in the case 1, and the positive and negative poles of the dc power supply 7 are respectively connected to the positive and negative poles of the metal-air battery 6, and are used for charging the positive and negative poles of the metal-air battery 6. The metal-air battery 6 of the present embodiment is a rechargeable air battery. After the deoxidation is finished, the zinc on the negative electrode is partially oxidized into zinc oxide, and the positive electrode and the negative electrode of the metal-air battery 6 can be charged through the direct-current power supply 7. In the charging process, zinc is used as an anode, a carbon rod is used as a cathode, the anode and the cathode can generate the reverse reaction of the primary battery reaction, the zinc oxide of the anode is reduced into metal zinc, and meanwhile, the cathode releases oxygen. After the charging is finished, the metal-air battery 6 is regenerated, and the capability of absorbing or consuming oxygen is recovered, so that the metal-air battery 6 can realize cyclic charging and discharging, namely, the metal-air battery can be used for multiple times.

In some embodiments, a circuit switch 71 is disposed between the dc power supply 7 and the positive electrode and the negative electrode of the metal-air battery 6, and the circuit switch 71 is used for controlling the on-off of a circuit between the dc power supply 7 and the metal-air battery 6. When the circuit switch 71 is turned off, the circuit between the dc power supply 7 and the metal-air battery 6 is turned on, and the dc power supply 7 supplies power to and charges the metal-air battery 6; when the circuit switch 71 is turned on, the circuit between the dc power supply 7 and the metal-air battery 6 is opened, and the metal-air battery 6 is supplied with electric discharge and consumes oxygen. Therefore, the circuit switch 71 can switch the charge and discharge functions of the metal-air battery 6.

In some embodiments, the circuit switch 71 is electrically connected to the control board 5, and the circuit switch 71 can be directly controlled to be turned on or off by the control board 5, so as to control the switching of the charging and discharging functions of the metal-air battery 6.

It should be noted that, in some embodiments, the dc power supply 7 may also be replaced by a power supply circuit module integrated on the control board 5, that is, an external power supply of the refrigerator is used, and the voltage is converted by the power supply circuit module, so as to charge the metal-air battery 6. Furthermore, the circuit switch 71 may also be integrated on the control board 5.

Referring to fig. 6 in conjunction with fig. 1 and 2, the display screen 8 is disposed in the cabinet 1, for example, attached to an inner wall of the refrigeration compartment 11 for a user to view and interact with. The display screen 8 is connected with the anode and the cathode of the metal-air battery 6, and the anode and the cathode of the metal-air battery 6 are used as output ends for supplying power to the outside, namely supplying power to the display screen 8. It will be appreciated that the metal-air battery 6 may also provide power to a low power blower, pump, light source, refrigerator touch screen, etc. within the refrigerator through its output when discharged.

There is a formula relationship between the electromotive force E value of the metal-air battery 6 and the oxygen partial pressure in the sealed chamber 40, which is expressed as: e ═ E₀-RT/4Fln(PO₂) Wherein R is a gas constant 8.314J/(mol. K), F is a Faraday constant 96.487 kJ/(mol. V), E₀Is a standard electromotive force, and is related to only metal species.

The corresponding relation between the electromotive force and the oxygen partial pressure is established according to the formula, and the concentration parameter of the oxygen in the sealed cavity 40 can be obtained through conversion by measuring the voltage at the two ends of the metal-air battery 6.

The display screen 8 is internally provided with a processing module, such as a processor. The processing module can convert the voltage signal at the two ends of the metal-air battery 6 into oxygen concentration and then display the oxygen concentration on the display screen 8. Therefore, when the metal-air battery 6 absorbs oxygen and discharges, that is, when power is supplied to the display screen 8, the display screen 8 can detect the discharge voltage of the metal-air battery 6, convert the detected voltage signal into the oxygen concentration in the sealed cavity 40 and then display the oxygen concentration, and thus real-time detection and display of the oxygen concentration in the sealed cavity 40 can be realized. It should be noted that in some embodiments, the oxygen removal schedule may also be displayed on the display screen 8, so as to realize the interaction between the refrigerator and the user.

The display screen 8 and the direct current power supply 7 are both connected with the anode and the cathode of the metal-air battery 6, so that the display screen 8 and the direct current power supply 7 form a parallel circuit. When the circuit switch 71 is turned off, the direct current power supply 7 charges the metal-air battery 6, and simultaneously, the direct current power supply 7 supplies power to the display screen 8, at this time, the display screen 8 can display the charging voltage of the direct current power supply 7 and can display that the metal-air battery 6 is in a regeneration state. In this embodiment, the voltage of the DC power supply 7 is 3V-6V. When the circuit switch 71 is turned on, the direct-current power supply 7 is disconnected from the metal-air battery 6, the metal-air battery 6 absorbs oxygen and discharges the oxygen to the outside, that is, the display screen 8 is powered, and at this time, the display screen 8 displays the discharge voltage of the metal-air battery 6 and displays the oxygen concentration in the sealed cavity 40 at this time.

Fig. 7 is a control schematic of fig. 6.

Referring to fig. 7, in some embodiments, the display screen 8 is electrically connected to the control board 5, so that the display screen 8 can transmit the oxygen concentration information in the sealed cavity 40 to the control board 5. The control plate 5 can set a lower limit concentration and an upper limit concentration according to the oxygen concentration range in the sealed chamber 40.

When the sealed cavity 40 is communicated with the inner space of the drawer 3, if the oxygen concentration in the drawer 3 is higher than the upper limit concentration of the set range, the metal-air battery 6 is started to discharge; at the moment, the circuit switch 71 is switched off, the first valve 41 is closed, the second valve 42 is opened, the space of the drawer 3 is communicated with the sealed cavity 40, and the metal-air battery 6 reacts with oxygen to reduce the oxygen concentration in the drawer 3 until the oxygen concentration reaches the lower limit concentration of the set range.

Since the oxygen concentration of the drawer 3 is higher than the upper limit concentration immediately after the drawer 3 is placed in the second storage chamber 112, the first valve 41 is closed and the second valve 42 is opened when the drawer 3 is completely placed in the second storage chamber 112 by default, and the sealed chamber 40 communicates with the inner space of the drawer 3, so that the metal-air battery 6 is discharged.

When the oxygen concentration reaches the lower limit of the set range, the oxygen removal in the drawer 3 is finished, and the metal-air battery 6 is started to be charged. That is, at this time, the circuit switch 71 is closed, the first valve 41 is opened, the second valve 42 is closed, and the seal chamber 40 communicates with the first storage chamber 111. The direct current power supply 7 charges the metal-air battery 6, the metal-air battery 6 is communicated with the first storage chamber 111, the metal-air battery 6 performs a reverse reaction to release oxygen, and the oxygen is discharged into the first storage chamber 111 until the voltage of the metal-air battery 6 is higher than a set voltage, at which time the charging of the metal-air battery 6 is completed.

In addition, during the charging process, the voltage signal displayed on the display 8 is the power supply voltage of the dc power supply 7, and at this time, the display content of the display 8 may be set to "regeneration", that is, the metal-air battery 6 is in the charged state. After charging, the control panel 5 can control the first valve 41 and the second valve 42 to be closed, so as to isolate the sealed cavity 40, and further maintain the voltage of the metal-air battery 6.

Based on the technical scheme, the utility model at least has the following advantages and positive effects:

in the refrigerator of the present invention, a first storage chamber 111 and a second storage chamber 112 in the refrigerator are separated by a partition plate 2; forming a sealed chamber 40 using the housing 4 of the oxygen control module and forming a first passage communicating with the first storage chamber 111 and a second passage communicating with the second storage chamber 112; the control panel 5 is used for controlling the first valve 41 and the second valve 42 to open and close the first channel and the second channel respectively, and the metal-air battery 6 is matched for absorbing and eliminating oxygen in the sealed cavity 40, so that oxygen can be removed from the first storage chamber 111 or the second storage chamber 112; meanwhile, power can be supplied to the outside, and the utilization rate of energy is improved. The scheme does not need to consume electric energy when oxygen is consumed, is not influenced by environment humidity, and is less in energy loss and environment-friendly.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the metes and bounds of the claims, or equivalence of such metes and bounds are therefore intended to be embraced by the appended claims.

Claims (10)

1. A refrigerator, characterized by comprising:

the refrigerator body is internally provided with a first storage chamber and a second storage chamber which are separated;

a partition plate provided in the cabinet and dividing the first storage chamber and the second storage chamber;

an oxygen control module, comprising:

the shell is arranged on the partition board, a sealing cavity is arranged in the shell, and a first channel for communicating the sealing cavity with the first storage chamber and a second channel for communicating the sealing cavity with the second storage chamber are arranged on the shell;

the first valve is movably arranged in the shell and is used for opening and closing the first channel;

the second valve is movably arranged in the shell and is used for opening and closing the second channel;

a metal-air cell disposed within the sealed cavity and configured to consume oxygen within the sealed cavity; when the metal-air battery absorbs oxygen, the metal-air battery can discharge outwards;

and the control board is electrically connected with the first valve and the second valve respectively and is used for controlling the first valve and the second valve to work respectively.

2. The refrigerator of claim 1, wherein the metal-air battery is configured as a rechargeable air battery; and when charging, the metal-air battery generates oxygen and regenerates the metal-air battery to recover its ability to absorb oxygen.

3. The refrigerator of claim 2, wherein the oxygen control module further comprises a dc power supply; the metal-air battery comprises a positive electrode and a negative electrode; when discharging, the positive electrode and the negative electrode are used as output ends and used for supplying power to the outside; and when in charging, the direct current power supply is electrically connected with the positive electrode and the negative electrode so as to charge the metal-air battery.

4. The refrigerator according to claim 3, wherein a circuit switch is provided between the dc power supply and the positive electrode or the negative electrode, and the circuit switch is used to control the on/off of a circuit between the dc power supply and the metal-air battery.

5. The refrigerator of claim 3, wherein the refrigerator further comprises a display screen;

the display screen is arranged in the box body and is connected with the output end of the metal-air battery; when the metal-air battery absorbs oxygen and discharges, the display screen is used for detecting the discharge voltage of the metal-air battery and converting the detected voltage signal into the oxygen concentration in the sealed cavity for displaying.

6. The refrigerator as claimed in claim 5, wherein the display screen is used to detect a charging voltage of the metal-air battery when the metal-air battery is charged.

7. The refrigerator of claim 5 wherein the display screen displays an oxygen concentration having a lower concentration limit and an upper concentration limit;

when the upper limit concentration is reached, the control panel controls the second valve to be opened and controls the first valve to be closed so as to remove oxygen from the sealed cavity of the metal-air battery and supply power to the outside through the output end;

and at the lower limit concentration, the control board controls the second valve to close and controls the first valve to open, and charges the metal-air battery.

8. The refrigerator as claimed in claim 1, wherein the first storage chamber and the second storage chamber are separately provided at upper and lower sides of the partition;

the shell is arranged on the bottom surface of the clapboard and is positioned at the top of the second storage chamber;

the first channel is a plurality of first air holes formed in the partition plate;

the second channel is a plurality of second air holes formed in the shell.

9. The refrigerator of claim 8, further comprising a drawer movably disposed in the second storage compartment; the top of the drawer is open and is opposite to the shell.

10. The refrigerator according to claim 2, wherein the metal-air battery includes a negative electrode, a positive electrode, an electrolyte, and a separator;

the negative electrode is metal and is configured to lose electrons during discharge to generate corresponding metal cations;

the anode is configured as a catalyst and is used for adsorbing oxygen in the air as an active substance and reducing the oxygen into hydroxide ions to enter the electrolyte;

the electrolyte is configured to perform positive and negative ion transport between the negative electrode and the positive electrode;

the diaphragm is arranged between the negative electrode and the positive electrode and separates the negative electrode from the positive electrode.

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