refrigerator

Abstract

The embodiment of the present application provides a refrigerator, which belongs to the field of household electrical appliances. The refrigerator includes a box body, which is configured with a storage chamber; a door body, which is connected to the box body and is used to open or close the storage chamber; a hydrogen production device, which is located in the storage chamber, includes an anode cylinder, a membrane electrode cylinder and a cathode cylinder that are sequentially sleeved and in contact with each other; a first receiving groove is provided on the side of the anode cylinder facing the membrane electrode cylinder, and the first receiving groove and the membrane electrode cylinder are surrounded to form a first chamber; the anode cylinder is also provided with a water injection port and an oxygen outlet, and the water injection port and the oxygen outlet are both connected to the first chamber; a second receiving groove opposite to the first receiving groove is provided on the side of the cathode cylinder facing the membrane electrode cylinder, and the second receiving groove and the membrane electrode cylinder are surrounded to form a second chamber; the cathode cylinder is also provided with a first hydrogen outlet, and the first hydrogen outlet is connected to the second chamber; wherein the first receiving groove and the second receiving groove are spirally surrounded by the membrane electrode cylinder. The refrigerator can improve the efficiency of hydrogen production and enhance the preservation effect of fruits and vegetables and other food materials.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of refrigeration equipment, and in particular to a refrigerator. Background Art

[0002] At present, in order to improve the preservation effect of fruits, vegetables and other food ingredients, a hydrogen production device is usually installed in the refrigerator. The hydrogen production device generally uses the method of electrolyzing water to produce hydrogen to preserve the food in the refrigerator.

[0003] In the related art, the hydrogen production device usually includes an anode cylinder, a membrane electrode cylinder and a cathode cylinder which are sequentially sleeved. A first receiving tank is provided on the side of the anode cylinder facing the membrane electrode cylinder, and the first receiving tank and the membrane electrode cylinder are surrounded to form a first chamber. The anode cylinder is also provided with a water injection port and an oxygen outlet, and both the water injection port and the oxygen outlet are connected to the first chamber. A second receiving tank opposite to the first receiving tank is provided on the side of the cathode cylinder facing the membrane electrode cylinder, and the second receiving tank and the membrane electrode cylinder are surrounded to form a second chamber. The first chamber, the second chamber and the membrane electrode cylinder located between the first chamber and the second chamber form a hydrogen production chamber. The cathode cylinder is also provided with a hydrogen outlet connected to the second chamber. When producing hydrogen, the anode cylinder is connected to the positive pole of the power supply, the cathode cylinder is connected to the negative pole of the power supply, water is injected into the first chamber through the water injection port, the water flows into the second chamber through the membrane electrode cylinder, and electrolysis is performed under the action of the anode cylinder, the cathode cylinder and the membrane electrode cylinder, hydrogen is generated in the second chamber, and the hydrogen flows out through the hydrogen outlet.

[0004] However, the hydrogen production device in the related art has low hydrogen production efficiency, produces a small amount of hydrogen, and has limited effect on preserving food. Utility Model Content

[0005] The embodiment of the present application provides a refrigerator that can solve the technical problems of a hydrogen production device in the related art, which has low hydrogen production efficiency, produces a small amount of hydrogen, and has a limited effect on preserving food.

[0006] In a first aspect, an embodiment of the present application provides a refrigerator, comprising:

[0007] A box body, which is configured with a storage compartment;

[0008] A door body, connected to the box body, used to open or close the storage chamber;

[0009] A hydrogen production device is located in the storage chamber and includes an anode cylinder, a membrane electrode cylinder and a cathode cylinder which are sequentially sleeved and in contact with each other;

[0010] The anode cylinder is provided with a first containing groove on one side facing the membrane electrode cylinder, and the first containing groove and the membrane electrode cylinder are surrounded by a first chamber; the anode cylinder is also provided with a water injection port and an oxygen outlet, and the water injection port and the oxygen outlet are both connected to the first chamber;

[0011] A second containing groove opposite to the first containing groove is arranged on the side of the cathode cylinder facing the membrane electrode cylinder, and the second containing groove and the membrane electrode cylinder are surrounded by a second chamber; the cathode cylinder is also provided with a first hydrogen outlet, and the first hydrogen outlet is connected to the second chamber;

[0012] Wherein, the first containing groove and the second containing groove surround the membrane electrode cylinder in a spiral shape.

[0013] In the refrigerator of the embodiment of the present application, during the hydrogen production process, when water is injected into the first chamber, the spiral first receiving groove can increase the contact area between water and the membrane electrode cylinder, so that water molecules can fully contact the membrane electrode cylinder to increase the amount of oxygen and hydrogen ions, thereby increasing the amount of hydrogen produced; moreover, the spiral second receiving groove can increase the area of ​​the second chamber, providing a larger escape space for hydrogen, which is conducive to the escape of hydrogen, thereby improving the hydrogen production efficiency and enhancing the preservation effect on fruits and vegetables and other food ingredients.

[0014] In some embodiments of the present application, the anode cylinder is located outside the membrane electrode cylinder; the water injection port is arranged above the outside of the anode cylinder; and the oxygen outlet is arranged below the outside of the anode cylinder.

[0015] In this arrangement, by arranging the anode cylinder outside the membrane electrode cylinder, and arranging the water injection port and the oxygen outlet outside the anode cylinder, the convenience of water injection and oxygen collection is improved. In addition, by arranging the water injection port above the outside of the anode cylinder, the water injection port can be ensured to have a high height as much as possible, which is conducive to increasing the maximum water volume in the first chamber. Moreover, since the relative density of oxygen is greater than the relative density of air, oxygen is usually located below the anode cylinder, and arranging the oxygen outlet below the outside of the anode cylinder is conducive to the discharge of oxygen.

[0016] In some embodiments of the present application, the cathode tube is located on the inner side of the membrane electrode tube; there are multiple first hydrogen outlets, and the multiple first hydrogen outlets are arranged at intervals on the inner side of the cathode tube and connect the interior of the cathode tube and the second containing tank.

[0017] In this way, by providing multiple first hydrogen outlets, the number of first hydrogen outlets is increased, which can avoid the problem of slow hydrogen discharge speed due to a small number of first hydrogen outlets as much as possible, which is conducive to quickly reaching the required concentration of hydrogen in the storage chamber. In addition, the first hydrogen outlet and the oxygen outlet are respectively located on different sides of the hydrogen production device, which can prevent hydrogen and oxygen from mixing as much as possible, which is conducive to separating hydrogen and oxygen.

[0018] In some embodiments of the present application, the hydrogen production device also includes two end covers, which are respectively covered at both ends of the anode cylinder, the membrane electrode cylinder and the cathode cylinder; each of the end covers is provided with a second hydrogen outlet, and the second hydrogen outlet connects the interior of the cathode cylinder with the outside.

[0019] In this way, the two end caps can be arranged with the cathode cylinder to form a hydrogen collection chamber, and the hydrogen generated in the second chamber can enter the hydrogen collection chamber through the first hydrogen outlet, and then flow into the storage chamber through the second hydrogen outlet. By setting up the hydrogen collection chamber, the generated hydrogen can be collected to improve the utilization rate of hydrogen. In addition, the end cap can also play the role of connecting the anode cylinder, the membrane electrode cylinder and the cathode cylinder to improve the structural reliability of the hydrogen production device.

[0020] In some embodiments of the present application, along the direction from the anode tube to the cathode tube, the membrane electrode tube includes an anode catalyst layer, a solid polymer electrolyte layer and a cathode catalyst layer which are sequentially arranged and in contact with each other, the anode catalyst layer is located on the side of the solid polymer electrolyte layer facing the anode tube, and the cathode catalyst layer is located on the side of the solid polymer electrolyte layer facing the cathode tube.

[0021] With such an arrangement, the anode catalyst layer can accelerate the decomposition of water molecules on the anode tube side, and the cathode catalyst layer can accelerate the combination of hydrogen ions and electrons on the cathode tube side, thereby accelerating the rate of generating hydrogen.

[0022] In some embodiments of the present application, the hydrogen production device further includes a conductive collecting plate, the collecting plate is located between the anode cylinder and the membrane electrode cylinder and / or between the cathode cylinder and the membrane electrode cylinder, and the collecting plate is provided with a plurality of air holes.

[0023] In this way, the conductive current collecting plate can increase the conductivity of the anode tube side and / or the cathode tube side, and can increase the movement rate of charged particles such as hydrogen ions during the hydrogen production process. The generated oxygen and hydrogen can flow out through the air holes, making the current collecting plate air permeable, thereby increasing the rate of water electrolysis without hindering gas escape as much as possible, which is beneficial to improving the hydrogen production efficiency of the hydrogen production device.

[0024] In some embodiments of the present application, the porosity of the current collecting plate is greater than or equal to 30% and less than or equal to 80%.

[0025] With such a configuration, the current collecting plate having a porosity within the above numerical range can balance the conductivity and permeability of the current collecting plate, so as to maximize the hydrogen production efficiency of the hydrogen production device.

[0026] In some embodiments of the present application, the material of the current collecting plate is titanium, stainless steel or graphite.

[0027] With this arrangement, titanium, stainless steel and graphite have greater electrical conductivity, good thermal conductivity, corrosion resistance, low density and high mechanical strength, which is conducive to making the current collecting plate meet the requirements of air permeability, thermal conductivity and electrical conductivity.

[0028] In some embodiments of the present application, the hydrogen production device also includes a magnet supply component, which is arranged on the side of the anode cylinder facing away from the membrane electrode cylinder, and / or the side of the cathode cylinder facing away from the membrane electrode cylinder, and the magnet supply component is configured to provide a magnetic field, and the direction of the magnetic field is from the cathode cylinder to the anode cylinder.

[0029] In this way, the magnetic field generated by the magnetic supply member can enhance the mass transfer process in the first chamber and the second chamber, so that the ohmic voltage drop between the anode cylinder and the cathode cylinder is reduced, and the voltage of the hydrogen production device can be reduced, thereby reducing the energy consumption of the hydrogen production device. In addition, the magnetohydrodynamic convection energy generated by the Lorentz force of the magnetic field is significant, which can effectively reduce the critical size of hydrogen bubbles on the surface of the cathode cylinder, promote the escape of hydrogen bubbles, and reduce the bubble coverage rate on the surface of the cathode cylinder, thereby improving the hydrogen production efficiency of the hydrogen production device. Moreover, the magnetic field can also control the flow of the fluid. The oxygen molecules generated on one side of the anode cylinder have paramagnetism and move in the direction of magnetic field enhancement in the magnetic field, thereby achieving oxygen enrichment. The water molecules on one side of the cathode cylinder and the hydrogen molecules generated have reverse magnetism, thereby achieving hydrogen enrichment. In addition, the magnetic field can also reduce the viscosity of liquid water, thereby increasing the conductivity of liquid water. In addition, the magnetic field can also directly affect the movement of electric charges and charged particles in food cells, reduce the activity of biological enzymes, and inhibit the metabolic activity of organisms, thereby extending the shelf life of fruits and vegetables and other food.

[0030] In some embodiments of the present application, the refrigerator also includes two sealed drawers, each of which is provided with a connecting pipe connected to the interior of the sealed drawer; the connecting pipe of one of the sealed drawers is connected to the first hydrogen outlet, and the connecting pipe of the other sealed drawer is connected to the oxygen outlet.

[0031] In this way, the sealed drawer connected to the first hydrogen outlet can be used to keep fresh by the hydrogen produced by the hydrogen production device. The sealed drawer connected to the oxygen outlet can be used to ripen the food by the oxygen produced by the hydrogen production device. The oxygen produced by the hydrogen production device can be used to enrich the functions of the refrigerator and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the implementation methods in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technology descriptions. Obviously, the drawings described below are some embodiments of the present application, and a person skilled in the art can also obtain other drawings based on these drawings.

[0033] Figure 1 A schematic diagram of the three-dimensional structure of a refrigerator according to an embodiment of the present application;

[0034] Figure 2 for Figure 1 A schematic diagram of the front view structure of the refrigerator with the door opened;

[0035] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure of the hydrogen production device;

[0036] Figure 4 for Figure 3 Schematic diagram of the principle of hydrogen production in the hydrogen production device;

[0037] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure of the middle membrane electrode cylinder;

[0038] Figure 6 Schematic diagram of the cross-sectional structure of a hydrogen production device in some possible implementations of the embodiments of the present application;

[0039] Figure 7 A schematic diagram of experimental results of an experiment on a hydrogen production device according to an embodiment of the present application;

[0040] Figure 8 for Figure 2 A schematic diagram of the relationship between the current and the magnetic field strength in the electromagnetic coil of the embodiment of the present application;

[0041] Fig. 9 A schematic diagram of the positions of the hydrogen production device and the sealed drawer according to an embodiment of the present application;

[0042] Fig.10 This is a schematic structural diagram of a sealed drawer according to an embodiment of the present application.

[0043] Reference numerals:

[0044] 100- cabinet;

[0045] 110-storage room; 120-box housing;

[0046] 130- box liner;

[0047] 200-door body;

[0048] 210-door housing; 220-door liner;

[0049] 300-Hydrogen production device;

[0050] 310-anode cylinder; 311-first containing tank;

[0051] 312-first chamber; 313-water injection port;

[0052] 314- oxygen outlet; 320- membrane electrode cylinder;

[0053] 321- anode catalyst layer; 322- solid polymer electrolyte layer;

[0054] 323- cathode catalyst layer; 324- anode diffusion layer;

[0055] 325- cathode diffusion layer; 330- cathode cylinder;

[0056] 331 - second containing groove; 332 - second chamber;

[0057] 333-first hydrogen outlet; 340-power supply;

[0058] 350-end cover; 351-second hydrogen outlet;

[0059] 352-hydrogen collecting chamber; 360-current collecting plate;

[0060] 370-magnetic supply parts;

[0061] 400-sealed drawer;

[0062] 410-connecting pipe; 420-drawer housing;

[0063] 430- drawer body; 440- drawer compartment;

[0064] 450-seals;

[0065] 500-water box;

[0066] 510-Water injection pipe. DETAILED DESCRIPTION

[0067] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0068] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0069] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such products or devices.

[0070] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0071] The terms "first", "second" and the like are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined with "first", "second" and the like may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0072] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0073] The refrigerator in the related art has the technical problems that the hydrogen production efficiency of the hydrogen production device is low, the amount of hydrogen produced is small, and the preservation effect on food is limited. The inventors have found that the reason is that the first receiving groove of the anode cylinder and the second receiving groove of the cathode cylinder are usually annular grooves arranged vertically, and the annular grooves and the membrane electrode cylinder are surrounded by the first chamber and the second chamber. When water is injected into the first chamber, the contact area between the water in the first chamber and the membrane electrode cylinder is small, which reduces the hydrogen production efficiency, resulting in less hydrogen produced and limited preservation effect on food.

[0074] In view of this, an embodiment of the present application provides a refrigerator, in which the first receiving groove of the anode cylinder and the second receiving groove of the cathode cylinder are both set as spiral grooves, so that the first chamber formed by the first receiving groove and the membrane electrode cylinder and the second chamber formed by the second receiving groove and the membrane electrode cylinder both form spiral chambers. In the process of hydrogen production, when water is injected into the first chamber, the first spiral receiving groove can increase the contact area between water and the membrane electrode cylinder, so that water molecules can fully contact the membrane electrode cylinder to increase the amount of oxygen and hydrogen ions, thereby increasing the amount of hydrogen produced; moreover, the second spiral receiving groove can increase the area of ​​the second chamber, providing a larger escape space for hydrogen, which is conducive to the escape of hydrogen, thereby improving the efficiency of hydrogen production and enhancing the preservation effect of fruits and vegetables and other food materials.

[0075] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0076] refer to Figure 1 and Figure 2 The refrigerator of the embodiment of the present application may include a box body 100 and a door body 200. The box body 100 may be configured with a storage chamber 110. The storage chamber 110 may be used to store food and other items. The door body 200 may be rotatably connected to the box body 100 to open or close the storage chamber 110.

[0077] For example, there may be a plurality of door bodies 200. Each storage chamber 110 may be provided with a corresponding door body 200, or a plurality of storage chambers 110 may be provided with a corresponding door body 200. Figure 2 As shown, the box body 100 may be constructed with two storage chambers 110 , the two storage chambers 110 are arranged in sequence in the vertical direction, and each storage chamber 110 may be correspondingly provided with two door bodies 200 .

[0078] The box body 100 may include a box housing 120 and a box liner 130. The box housing 120 may be configured with a storage compartment having a first opening. The box housing 120 may form the appearance of a refrigerator. The box liner 130 may be placed in the storage compartment via the first opening, and the box liner 130 may be configured with a storage compartment 110 having a second opening, and the second opening and the first opening may be located on the same side of the box housing 120. A user may place items into the storage compartment 110 via the second opening, or take items out of the storage compartment 110.

[0079] The box body 100 may further include a first insulation layer. The first insulation layer may be filled between the box liner 130 and the box shell 120 to insulate the storage chamber 110, reduce the heat exchange between the storage chamber 110 and the outside of the refrigerator, and thus reduce the energy consumption of the refrigerator. Exemplarily, in some possible implementations of the embodiments of the present application, the insulation material may be foamed and filled between the box shell 120 and the box liner 130 to form the first insulation layer.

[0080] The door body 200 may include a door liner 220 and a door shell 210 that are disposed opposite to each other. The door shell 210 may form the appearance of the refrigerator. The door liner 220 may be located on a side of the door shell 210 that faces the storage chamber 110 when the door body 200 is closed. The door shell 210 may be connected to the door liner 220.

[0081] The door body 200 may further include a second insulation layer, which may be filled between the door liner 220 and the door shell 210 to insulate the storage chamber 110 when the door body 200 is closed, thereby reducing the heat exchange between the storage chamber 110 and the outside of the refrigerator, thereby reducing the energy consumption of the refrigerator. For example, in some possible implementations of the embodiments of the present application, the second insulation layer may be formed by foaming the insulation material and filling it between the cabinet shell and the cabinet liner.

[0082] The refrigerator of the embodiment of the present application may also include a refrigeration system, which is used to provide cold for the storage chamber 110. Exemplarily, the refrigeration system may include a compressor, a condenser, a capillary tube and an evaporator that are cyclically connected. When the refrigeration system is running, the compressor compresses the refrigerant vapor to generate high-temperature and high-pressure refrigerant vapor, and transports the refrigerant vapor to the condenser. The condenser liquefies the high-temperature and high-pressure refrigerant vapor to generate a high-temperature and low-pressure refrigerant liquid, and transports it to the capillary tube. After the capillary tube reduces the pressure of the refrigerant liquid, the high-pressure and low-temperature refrigerant liquid is converted into a low-pressure and low-temperature refrigerant liquid, and transported to the evaporator. After the evaporator receives the low-pressure and low-temperature refrigerant liquid, it boils it under isobaric conditions, absorbs heat and vaporizes it to form refrigerant vapor to reduce the temperature in the storage chamber 110.

[0083] The refrigerator of the embodiment of the present application may also include a hydrogen production device 300. The hydrogen production device 300 may be located in the storage chamber 110 and used to produce hydrogen. Since the fruits, vegetables and other food materials are still undergoing metabolism after harvest and retain their original physiological activities, they absorb oxygen from the air, decompose and consume their own nutrients, and produce carbon dioxide, water and heat. However, fruits, vegetables and other food materials can no longer provide themselves with water and nutrients after harvest. When the temperature is high and they are stored for too long, the activity of the enzymes inside fruits, vegetables and other food materials increases, and the respiration rate of fruits and vegetables accelerates, thereby promoting the ripening of fruits, vegetables and other food materials. Hydrogen has a certain plant resistance effect and can be used as a preservative for fruits, vegetables and other food materials to extend the shelf life of fruits, vegetables and other food materials.

[0084] refer to Figure 3 , the hydrogen production device 300 may include an anode cylinder 310, a membrane electrode cylinder 320 and a cathode cylinder 330 which are sequentially sleeved and in contact with each other. A first receiving groove 311 may be provided on the side of the anode cylinder 310 facing the membrane electrode cylinder 320, and the first receiving groove 311 and the membrane electrode cylinder 320 may be surrounded to form a first chamber 312. The anode cylinder 310 may also be provided with a water injection port 313 and an oxygen outlet 314. The water injection port 313 and the oxygen outlet 314 may both be connected to the first chamber 312. A second receiving groove 331 opposite to the first receiving groove 311 may be provided on the side of the cathode cylinder 330 facing the membrane electrode cylinder 320, and the second receiving groove 331 and the membrane electrode cylinder 320 may be surrounded to form a second chamber 332. The cathode cylinder 330 may also be provided with a first hydrogen outlet 333, and the first hydrogen outlet 333 may be connected to the second chamber 332.

[0085] When producing hydrogen, the anode cylinder 310 is connected to the positive electrode of the power supply 340, the cathode cylinder 330 is connected to the negative electrode of the power supply 340, and water is injected into the first chamber 312 through the water injection port 313. The water flows into the second chamber 332 through the membrane electrode cylinder 320, and electrolysis is carried out under the action of the anode cylinder 310, the cathode cylinder 330 and the membrane electrode cylinder 320, and hydrogen is generated in the second chamber 332, and the hydrogen flows out through the hydrogen outlet.

[0086] like Figure 4 As shown, under the action of the voltage provided by the power supply 340, water molecules are decomposed on the side of the anode cylinder 310 connected to the positive electrode to generate oxygen and hydrogen ions. The hydrogen ions pass through the membrane electrode cylinder 320 to reach the cathode cylinder 330, and combine with electrons on the surface of the cathode cylinder 330 to generate hydrogen.

[0087] In some related technologies, the hydrogen production device generally includes an anode plate, a membrane electrode plate and a cathode plate stacked in sequence. That is to say, the anode, membrane electrode and cathode in the related technology are all plate-like structures. In the hydrogen production device 300 of the embodiment of the present application, the anode cylinder 310, the membrane electrode cylinder 320 and the cathode cylinder 330 are all barrel-like structures. Compared with the plate-like structure, the barrel-like structure has a higher surface area under the same volume or mass, which increases the contact area of ​​the water anode cylinder 310, the membrane electrode cylinder 320 and the cathode cylinder 330, making the water electrolysis more sufficient, which is conducive to improving the hydrogen production efficiency, thereby helping to improve the volume power and mass power of the hydrogen production device 300, and then helping to reduce the cost of the hydrogen production device 300.

[0088] It should be noted that volumetric power refers to the power output of a refrigeration device per unit volume, while mass power refers to the power output of a refrigeration device per unit mass.

[0089] In the embodiment of the present application, the first receiving groove 311 and the second receiving groove 331 can be spirally wrapped around the membrane electrode cylinder 320. During the hydrogen production process, when water is injected into the first chamber 312, the spiral first receiving groove 311 can increase the contact area between water and the membrane electrode cylinder 320, so that water molecules can fully contact the membrane electrode cylinder 320 to increase the amount of oxygen and hydrogen ions, thereby increasing the amount of hydrogen produced; and the spiral second receiving groove 331 can increase the area of ​​the second chamber 332, providing a larger escape space for hydrogen, which is conducive to the escape of hydrogen, thereby improving the hydrogen production efficiency and enhancing the preservation effect of fruits and vegetables and other food materials.

[0090] In some possible implementations of the embodiments of the present application, the anode cylinder 310 may be located inside the membrane electrode cylinder 320 , and the cathode cylinder 330 may be located outside the membrane electrode cylinder 320 .

[0091] In some possible implementations of the present application, such as Figure 3 As shown, the anode cylinder 310 can be located outside the membrane electrode cylinder 320. The water injection port 313 is arranged above the outside of the anode cylinder 310. The oxygen outlet 314 is arranged below the outside of the anode cylinder 310. By arranging the anode cylinder 310 outside the membrane electrode cylinder 320, and arranging the water injection port 313 and the oxygen outlet 314 outside the anode cylinder 310, the convenience of water injection and oxygen collection is improved. In addition, by arranging the water injection port 313 above the outside of the anode cylinder 310, the water injection port 313 can be ensured to have a higher height as much as possible, which is conducive to increasing the maximum water volume in the first chamber 312. Moreover, since the relative density of oxygen is greater than the relative density of air, oxygen is usually located below the anode cylinder 310, and the oxygen outlet 314 is arranged below the outside of the anode cylinder 310, which is conducive to the discharge of oxygen.

[0092] The cathode cylinder 330 may be located inside the membrane electrode cylinder 320. There may be multiple first hydrogen outlets 333, and multiple first hydrogen outlets 333 may be arranged at intervals inside the cathode cylinder 330, and connected to the interior of the cathode cylinder 330 and the second containing tank 331. By providing multiple first hydrogen outlets 333, the number of first hydrogen outlets 333 is increased, and the problem of slow hydrogen discharge speed due to a small number of first hydrogen outlets 333 can be avoided as much as possible, which is conducive to quickly reaching the desired concentration of hydrogen in the storage chamber 110. In addition, the first hydrogen outlet 333 and the oxygen outlet 314 are respectively located on different sides of the hydrogen production device 300, which can prevent hydrogen and oxygen from mixing as much as possible, which is conducive to separating hydrogen and oxygen.

[0093] refer to Figure 5The membrane electrode cylinder 320 may include an anode catalyst layer 321, a solid polymer electrolyte layer 322 (SPE) and a cathode catalyst layer 323 which are sequentially arranged and in contact with each other. The anode catalyst layer 321 may be located on the side of the solid polymer electrolyte layer 322 facing the anode cylinder 310, and the cathode catalyst layer 323 may be located on the side of the solid polymer electrolyte layer 322 facing the cathode cylinder 330. For example Figure 5 As shown, when the anode cylinder 310 is located on the outside of the membrane electrode cylinder 320 and the cathode cylinder 330 is located on the inside of the membrane electrode cylinder 320, the anode catalyst layer 321 can be located on the outside of the solid polymer electrolyte layer 322, and the cathode catalyst layer 323 can be located on the inside of the solid polymer electrolyte layer 322. It can be understood that when the anode cylinder 310 is located on the inside of the membrane electrode cylinder 320 and the cathode cylinder 330 can be located on the outside of the membrane electrode cylinder 320, the anode catalyst layer 321 can be located on the inside of the solid polymer electrolyte layer 322, and the cathode catalyst layer 323 can be located on the outside of the solid polymer electrolyte layer 322. The anode catalyst layer 321 can accelerate the decomposition of water molecules on the side of the anode cylinder 310, and the cathode catalyst layer 323 can accelerate the combination of hydrogen ions and electrons on the side of the cathode cylinder 330, thereby accelerating the rate of generating hydrogen.

[0094] refer to Figure 5 The membrane electrode cylinder 320 may further include an anode diffusion layer 324. The anode diffusion layer 324 may be located on the side of the anode catalyst layer 321 facing away from the solid polymer electrolyte layer 322. The anode diffusion layer 324 may increase the movement speed of oxygen molecules on one side of the anode cylinder 310, thereby increasing the amount of oxygen generated per unit time.

[0095] The membrane electrode may further include a cathode diffusion layer 325. The cathode diffusion layer 325 may be located on the side of the cathode catalyst layer 323 facing away from the solid polymer electrolyte layer 322. The cathode diffusion layer 325 may increase the movement speed of hydrogen ions, electrons and hydrogen on one side of the cathode cylinder 330, thereby increasing the amount of hydrogen produced per unit time.

[0096] Continue to refer Figure 3, the hydrogen production device 300 may also include two end covers 350. The two end covers 350 may be respectively covered at both ends of the anode cylinder 310, the membrane electrode cylinder 320 and the cathode cylinder 330. Exemplarily, the end cover 350 may be fixedly connected to the anode cylinder 310, the membrane electrode cylinder 320 or the cathode cylinder 330 by a connector such as a bolt. Each end cover 350 may be provided with a second hydrogen outlet 351, and the second hydrogen outlet 351 connects the inside of the cathode cylinder 330 with the outside. The two end covers 350 may be surrounded by the inside of the cathode cylinder 330 to form a hydrogen collection chamber 352, and the hydrogen generated in the second chamber 332 may enter the hydrogen collection chamber 352 via the first hydrogen outlet 333, and then flow into the storage chamber 110 via the second hydrogen outlet 351. By providing the hydrogen collection chamber 352, the generated hydrogen can be collected to improve the utilization rate of the hydrogen. In addition, the end cover 350 can also play a role in connecting the anode cylinder 310 , the membrane electrode cylinder 320 and the cathode cylinder 330 to improve the structural reliability of the hydrogen production device 300 .

[0097] Exemplarily, the end cap 350 may be made of insulating materials such as plastic, and can provide insulation protection for the anode cylinder 310 and the cathode cylinder 330 covered by the end cap 350 .

[0098] In some possible implementations of the present application, the end cap 350 may be provided with a first through hole and a second through hole. The anode cylinder 310 may be connected to a first connection electrode, the first connection electrode is used to connect to the positive electrode of the power supply 340, and the first connection electrode may be inserted into the first through hole. The cathode cylinder 330 may be connected to a second connection electrode, the second connection electrode is used to connect to the negative electrode of the power supply 340, and the second connection electrode may be inserted into the second through hole. Such a configuration can reduce or even eliminate the influence of the connection between the anode cylinder 310 and the cathode cylinder 330 and the power supply 340 caused by the provision of the end cap 350, which is conducive to ensuring the functional reliability of the hydrogen device.

[0099] Exemplarily, the end cap 350 may also be a silicone sealing material, which can be sealed and connected to the cathode cylinder 330, thereby improving the sealing of the hydrogen collection chamber 352, which is conducive to preventing the uncontrollable escape of hydrogen.

[0100] refer to Figure 3, the hydrogen production device 300 may further include a current collecting plate 360 ​​having conductivity. The current collecting plate 360 ​​may be located between the anode cylinder 310 and the membrane electrode cylinder 320 and / or between the cathode cylinder 330 and the membrane electrode cylinder 320. For example, the current collecting plate 360 ​​may be located between the anode cylinder 310 and the membrane electrode cylinder 320. For another example, the current collecting plate 360 ​​may be located between the cathode cylinder 330 and the membrane electrode cylinder 320. For another example, the number of the current collecting plates 360 may be two, one of which may be located between the anode cylinder 310 and the membrane electrode cylinder 320, and the other current collecting plate 360 ​​may be located between the cathode cylinder 330 and the membrane electrode cylinder 320. The current collecting plate 360 ​​may be provided with a plurality of air permeable holes. The conductive collecting plate 360 ​​can improve the conductivity of the anode cylinder 310 side and / or the cathode cylinder 330 side, and can increase the movement rate of charged particles such as hydrogen ions during the hydrogen production process. The generated oxygen and hydrogen can flow out through the air holes, making the collecting plate 360 ​​air permeable, thereby increasing the rate of water electrolysis without hindering gas escape as much as possible, which is beneficial to improving the hydrogen production efficiency of the hydrogen production device 300.

[0101] Exemplarily, the porosity of the current collector 360 may be greater than or equal to 30% and less than or equal to 80%. Porosity refers to the percentage of the volume of the air-permeable pores in the current collector 360 to the total volume of the current collector 360. The greater the porosity, the greater the volume of the air-permeable pores. The current collector 360 having a porosity within the above numerical range can balance the conductivity and permeability of the current collector 360 to maximize the hydrogen production efficiency of the hydrogen production device 300. If the porosity of the current collector 360 is less than 30%, the porosity is too small, which will result in a too small volume of the air-permeable pores, thereby hindering the escape of hydrogen or oxygen. If the porosity of the current collector 360 is greater than 80%, the porosity is too large, which will result in a too large volume of the air-permeable pores, thereby reducing the volume of the conductive material in the current collector 360, reducing the conductivity of the current collector 360, and reducing the rate of hydrogen production.

[0102] Exemplarily, the material of the current collecting plate 360 ​​can be a conductive metal such as titanium, stainless steel, or a conductive non-metal such as graphite. Titanium, stainless steel, and graphite have high electrical conductivity, good thermal conductivity, corrosion resistance, low density, and high mechanical strength, which is conducive to making the current collecting plate 360 ​​meet the requirements of air permeability, thermal conductivity, and electrical conductivity. It is understandable that the material of the current collecting plate 360 ​​can also be other conductive materials, which will not be described in detail in the embodiments of the present application.

[0103] In some possible implementations of the present application, reference is made to Figure 6, the hydrogen production device 300 may further include a magnet supply component 370, which may be disposed on the side of the anode cylinder 310 facing away from the membrane electrode cylinder 320 and / or the side of the cathode cylinder 330 facing away from the membrane electrode cylinder 320. Taking the case where the anode cylinder 310 is located outside the membrane electrode cylinder 320 and the cathode cylinder 330 is located inside the membrane electrode cylinder 320 as an example, the magnet supply component 370 may be disposed on the side of the anode cylinder 310 facing away from the membrane electrode cylinder 320, that is, the magnet supply component 370 may be disposed on the outside of the anode cylinder 310. Figure 6 As shown, the magnet supply member 370 may also be disposed inside the cathode cylinder 330 . Alternatively, there may be two magnet supply members 370 , one of which is disposed outside the anode cylinder 310 , and the other magnet supply member 370 is disposed inside the cathode cylinder 330 .

[0104] The magnet supply member 370 may be configured to provide a magnetic field, and the direction of the magnetic field may be directed from the cathode cylinder 330 to the anode cylinder 310. Figure 6 As shown, when the magnet supply member 370 is located inside the cathode cylinder 330, the direction of the magnetic field generated by the magnet supply member 370 may be from inside to outside.

[0105] In the embodiment of the present application, the hydrogen production device 300 is provided with a magnetic supply member 370. The magnetic field generated by the magnetic supply member 370 can enhance the mass transfer process in the first chamber 312 and the second chamber 332, so that the ohmic voltage drop between the anode cylinder 310 and the cathode cylinder 330 is reduced, and the voltage of the hydrogen production device 300 can be reduced, thereby reducing the energy consumption of the hydrogen production device 300. In addition, the magnetohydrodynamic convection energy generated by the Lorentz force of the magnetic field is significant, which can effectively reduce the critical size of hydrogen bubbles on the surface of the cathode cylinder 330, promote the escape of hydrogen bubbles, and reduce the bubble coverage rate on the surface of the cathode cylinder 330, thereby improving the hydrogen evolution efficiency of the hydrogen production device 300.

[0106] Moreover, the magnetic field can also control the flow of fluid. The oxygen molecules produced on one side of the anode cylinder 310 have paramagnetism and move in the direction of magnetic field enhancement in the magnetic field, thereby achieving oxygen enrichment. The water molecules on one side of the cathode cylinder 330 and the hydrogen molecules produced have reverse magnetism, thereby achieving hydrogen enrichment. In addition, the magnetic field can also reduce the viscosity of liquid water, thereby improving the conductivity of liquid water.

[0107] In addition, the magnetic field can directly affect the movement of electric charges and charged particles within the cells of food, reduce the activity of biological enzymes, and inhibit the metabolic activities of organisms, thereby extending the shelf life of food such as fruits and vegetables.

[0108] like Figure 7 As shown, after experimental investigation by the inventor, compared with the hydrogen production device 300 without the magnetic supply component 370, the hydrogen production device 300 of the embodiment of the present application provided with the magnetic supply component 370 can have a maximum coulomb efficiency of more than 30%, which can extend the shelf life of fruits and vegetables and other food materials by more than 50%.

[0109] Exemplarily, the magnet supply member 370 may be a permanent magnet. Exemplarily, the magnet supply member 370 may also be an electromagnetic coil. The electromagnetic coil may be wound by a conductive wire (such as a copper wire) to be insulated and coated, and may generate a uniform magnetic field. Figure 8 As shown, a magnetic field can be generated by supplying power to the electromagnetic coil. The greater the current supplied, the stronger the magnetic field. Therefore, the strength of the magnetic field generated by the electromagnetic coil can be controlled by changing the current to meet the use requirements of the refrigerator in different scenarios.

[0110] refer to Figure 2 and Fig. 9 , the refrigerator of the embodiment of the present application may also include two sealed drawers 400. Each sealed drawer 400 may be provided with a connecting pipe 410 connected to the inside of the sealed drawer 400. The connecting pipe 410 of one of the sealed drawers 400 may be connected to the first hydrogen outlet 333, and the connecting pipe 410 of the other sealed drawer 400 may be connected to the oxygen outlet 314. The sealed drawer 400 connected to the first hydrogen outlet 333, the hydrogen produced by the hydrogen production device 300 can enter the sealed drawer 400 via the first hydrogen outlet 333, and the sealed drawer 400 can be used for preservation. The sealed drawer 400 connected to the oxygen outlet 314, the oxygen produced by the hydrogen production device 300 can enter the sealed drawer 400 via the oxygen outlet 314, the drawer is in an oxygen-rich state, which is conducive to the saccharification of ingredients such as fruits and vegetables, and can be used for ripening. In this way, the oxygen produced by the hydrogen production device 300 can be utilized, and it is conducive to enriching the functions of the refrigerator and improving the user experience.

[0111] like Figure 2 and Fig. 9 As shown, two sealed drawers 400 can be arranged in the storage room 110 at intervals in the horizontal direction, and the hydrogen production device 300 can be arranged between the two sealed drawers 400 in the vertical direction. For example, the hydrogen production device 300 can be connected between the two sealed drawers 400 by a snap-fit ​​structure. The second hydrogen outlet 351 of the hydrogen production device 300 can be connected to the connecting pipe 410 of one of the sealed drawers 400, so as to be indirectly connected to the connecting pipe 410 through the second hydrogen outlet 351. The hydrogen produced by the hydrogen production device 300 can enter the hydrogen collection chamber 352 via the first hydrogen outlet 333, and then enter the sealed drawer 400 via the second hydrogen outlet 351 and the connecting pipe 410. The oxygen outlet 314 of the hydrogen production device 300 can be directly connected to the connecting pipe 410 of another sealed drawer 400. The hydrogen produced by the hydrogen production device 300 can enter the sealed drawer 400 via the connecting pipe 410.

[0112] refer to Fig. 9The refrigerator of the embodiment of the present application may further include a water box 500 and a water injection pipe 510. The water box 500 is used to hold water. The water box 500 may be disposed above the hydrogen production device 300. The water box 500 may be connected to the water injection port 313 of the hydrogen production device 300 through the water injection pipe 510. The water in the water box 500 may flow into the hydrogen production device 300 through the water injection pipe 510 and the water injection port 313.

[0113] Exemplarily, a water level sensor may be provided in the water box 500 to detect the water level in the water box 500. When the water level in the water box 500 is too low, the user may be reminded to add water in time.

[0114] refer to Fig.10 , the sealed drawer 400 may include a drawer shell 420 and a drawer body 430. The drawer shell 420 may be configured with a drawer compartment 440 with an open front end. The drawer body 430 is used to store food materials such as fruits and vegetables, and the drawer body 430 may be accommodated in the drawer compartment 440 and slidably connected to the drawer shell 420 in a horizontal direction. The open front end of the drawer shell 420 may be provided with a seal 450, which is used to seal between the drawer body 430 and the drawer shell 420. The connecting pipe 410 may be provided on the drawer shell 420 and connected to the drawer compartment 440. The number of connecting pipes 410 may be specifically set according to the number of the second hydrogen outlet 351 or the oxygen outlet 314, and the embodiments of the present application will not be repeated here.

[0115] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0116] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that: The refrigerator comprises: A box body, which is configured with a storage compartment; A door body, connected to the box body, used to open or close the storage chamber; A hydrogen production device is located in the storage chamber and includes an anode cylinder, a membrane electrode cylinder and a cathode cylinder which are sequentially sleeved and in contact with each other; The anode cylinder is provided with a first containing groove on one side facing the membrane electrode cylinder, and the first containing groove and the membrane electrode cylinder are surrounded by a first chamber; the anode cylinder is also provided with a water injection port and an oxygen outlet, and the water injection port and the oxygen outlet are both connected to the first chamber; A second containing groove opposite to the first containing groove is arranged on the side of the cathode cylinder facing the membrane electrode cylinder, and the second containing groove and the membrane electrode cylinder are surrounded by a second chamber; the cathode cylinder is also provided with a first hydrogen outlet, and the first hydrogen outlet is connected to the second chamber; Wherein, the first containing groove and the second containing groove surround the membrane electrode cylinder in a spiral shape.

2. The refrigerator according to claim 1, characterized in that: The anode cylinder is located outside the membrane electrode cylinder; the water inlet is arranged above the outside of the anode cylinder; and the oxygen outlet is arranged below the outside of the anode cylinder.

3. The refrigerator according to claim 1, characterized in that: The cathode cylinder is located inside the membrane electrode cylinder; there are multiple first hydrogen outlets, which are arranged at intervals inside the cathode cylinder and communicate with the interior of the cathode cylinder and the second containing tank.

4. The refrigerator according to claim 3, characterized in that: The hydrogen production device also includes two end covers, which are respectively covered at both ends of the anode cylinder, the membrane electrode cylinder and the cathode cylinder; each of the end covers is provided with a second hydrogen outlet, which connects the interior of the cathode cylinder with the outside.

5. The refrigerator according to claim 1, characterized in that: Along the direction from the anode tube to the cathode tube, the membrane electrode tube includes an anode catalyst layer, a solid polymer electrolyte layer and a cathode catalyst layer which are sequentially arranged and in contact with each other. The anode catalyst layer is located on the side of the solid polymer electrolyte layer facing the anode tube, and the cathode catalyst layer is located on the side of the solid polymer electrolyte layer facing the cathode tube.

6. The refrigerator according to any one of claims 1 to 5, characterized in that: The hydrogen production device further comprises a current collecting plate having conductivity, wherein the current collecting plate is located between the anode cylinder and the membrane electrode cylinder and / or between the cathode cylinder and the membrane electrode cylinder, and the current collecting plate is provided with a plurality of air permeable holes.

7. The refrigerator according to claim 6, characterized in that: The porosity of the current collecting plate is greater than or equal to 30% and less than or equal to 80%.

8. The refrigerator according to claim 7, characterized in that: The material of the current collecting plate is titanium, stainless steel or graphite.

9. The refrigerator according to any one of claims 1 to 5, characterized in that: The hydrogen production device also includes a magnet supply component, which is arranged on the side of the anode cylinder facing away from the membrane electrode cylinder and / or the side of the cathode cylinder facing away from the membrane electrode cylinder. The magnet supply component is configured to provide a magnetic field, and the direction of the magnetic field is from the cathode cylinder to the anode cylinder.

10. The refrigerator according to any one of claims 1 to 5, characterized in that: The refrigerator also includes two sealed drawers, each of which is provided with a connecting pipe connected to the interior of the sealed drawer; the connecting pipe of one of the sealed drawers is connected to the first hydrogen outlet, and the connecting pipe of the other sealed drawer is connected to the oxygen outlet.

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