Refrigerator

Abstract

The refrigerator comprises a refrigerator body, a deoxygenation module, a gas supply device and a dehumidification assembly, the deoxygenation module comprises a gas box, an electrode assembly and a liquid storage box, the gas box is provided with a gas cavity, the liquid storage box is provided with a liquid storage cavity, an oxygen exhaust port is formed in the upper end of the liquid storage box, and the gas box is connected with the liquid storage box; the gas box is provided with a gas inlet and a gas outlet which are communicated with the gas cavity, the electrode assembly comprises a cathode, a diaphragm and an anode, the cathode is coated with an aerobic reduction reaction catalyst, and the anode is coated with an aerobic precipitation reaction catalyst; the air supply device is connected to the deoxidizing module, the air inlet end of the air supply device communicates with the storage cavity of the storage box, and the exhaust end of the air supply device communicates with the air inlet; the dehumidification assembly comprises an air conveying pipe and a drainage device, the drainage device is arranged at the low point of the air conveying pipe, the two ends of the air conveying pipe communicate with the air outlet and the storage cavity, and the dehumidification assembly is located in the low-temperature area. The oxygen removal module effectively reduces the oxygen concentration, the dehumidification assembly can conduct dehumidification, and fresh keeping of the fruit and vegetable food materials is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerators, and in particular to a refrigerator. Background Art

[0002] A refrigerator is a type of freezing equipment that maintains a stable low temperature, used to keep food or other items at a low temperature. For the preservation of fruits and vegetables, a low oxygen environment can inhibit respiration, inhibit the activity of certain enzymes, inhibit the production of ethylene, and effectively inhibit the growth and reproduction of aerobic bacteria, which is beneficial to the preservation of fruits and vegetables.

[0003] In the related art, some refrigerators separate oxygen through an oxygen control system to form a low-oxygen environment to help keep fruits and vegetables fresh. The transpiration of fruits and vegetables will increase the humidity, making the humidity of the storage space higher and easily generating condensation, which will cause the food to rot. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a refrigerator that can effectively reduce the oxygen concentration and dehumidify the storage space, which is conducive to preserving the freshness of fruits and vegetables.

[0005] According to an embodiment of the present invention, a refrigerator includes a box, a deoxygenation module, an air supply device and a dehumidification component. A compartment is provided inside the box, a storage box is arranged in the compartment, the deoxygenation module is located in the compartment, the deoxygenation module includes a gas box, an electrode assembly and a liquid storage box, the gas box is provided with a gas cavity, the liquid storage box is provided with a liquid storage cavity, an oxygen exhaust port is provided at the upper end of the liquid storage box, the gas box is connected to the liquid storage box, the gas box is provided with an air inlet and an air outlet connected to the gas cavity, the electrode assembly includes a cathode, a diaphragm and an anode, the cathode is coated with an oxygen reduction reaction catalyst, and the The anode is coated with an oxygen evolution reaction catalyst, the cathode and the anode are distributed on both sides of the diaphragm, and the diaphragm is located between the gas cavity and the liquid storage cavity; the air supply device is connected to the deoxygenation module, the air inlet end of the air supply device is connected to the storage cavity of the storage box, and the exhaust end of the air supply device is connected to the air inlet; the dehumidification component includes an air supply pipe and a drainage device, the drainage device is arranged at the low point of the air supply pipe, and the two ends of the air supply pipe are connected to the air outlet and the storage cavity, and the dehumidification component is located in a low temperature area, and the temperature of the low temperature area is lower than the temperature of the storage cavity to condense water vapor.

[0006] The refrigerator according to the embodiment of the present invention has at least the following beneficial effects:

[0007] The deoxygenation module stores electrolyte in the liquid storage chamber, and the electrolyte contacts the anode. The air in the storage space is transported into the gas chamber through the gas supply device, and the air contacts the cathode. Under the action of the negative potential and the oxygen reduction catalyst, the oxygen is converted into ionized oxygen, and the ionized oxygen passes through the diaphragm and moves to the liquid storage chamber. Under the action of the positive potential and the oxygen precipitation catalyst, the ionized oxygen is converted into oxygen and precipitated, and the precipitated oxygen is discharged through the oxygen exhaust port. After separating the oxygen, the remaining nitrogen enters the gas pipe of the dehumidification component, passes through the low-temperature area, and the water vapor in the nitrogen is condensed and discharged through the drainage device, reducing the humidity of the nitrogen. The nitrogen finally returns to the storage space, reducing the oxygen concentration and humidity of the storage space, which is beneficial to the preservation of fruits and vegetables.

[0008] According to some embodiments of the present invention, the low temperature area is an air outlet close to the compartment.

[0009] According to some embodiments of the present invention, the compartment includes a refrigerating chamber and a freezing chamber, and the low-temperature area is located in the freezing chamber.

[0010] According to some embodiments of the present invention, the drainage device includes a valve body and a float, the valve body is provided with an inner cavity and a drain outlet, the inner cavity is connected to the air pipe, the drain outlet is connected to the lowest point of the inner cavity, the float is located in the inner cavity and can close the drain outlet.

[0011] According to some embodiments of the present invention, the lower end of the inner cavity is configured to be conical, and the lower end of the float is provided with a conical surface matching the inner cavity.

[0012] According to some embodiments of the present invention, a guide rod is provided at the lower end of the float, the guide rod is sleeved with a guide block, the guide block is located in the drain port, and the guide block is provided with a plurality of through holes.

[0013] According to some embodiments of the present invention, the drainage device includes an outer shell and a sealing plate, the outer shell is provided with a water collecting chamber connected to the air pipe, the lower end of the outer shell is provided with a water outlet connected to the water collecting chamber, the sealing plate is located below the water outlet, and the sealing plate is connected to a tension spring so that the sealing plate closes the water outlet.

[0014] According to some embodiments of the present invention, the gas delivery pipe is provided with a U-shaped pipe section, and the drainage device is arranged at the lowest point of the U-shaped pipe section.

[0015] According to some embodiments of the present invention, the liquid storage box is provided with a communication port, a plurality of support rods are arranged in the communication port, and the electrode assembly is connected to the plurality of support rods.

[0016] According to some embodiments of the present invention, the liquid storage box is connected to a pressure plate, the pressure plate is located in the liquid storage cavity, the pressure plate is a flat piece and abuts against the anode, and the pressure plate is provided with a plurality of ventilation holes.

[0017] According to some embodiments of the present invention, a sealing groove is provided on the side of the liquid storage box facing the gas box, the sealing groove surrounds the communication port, and the gas box is provided with a sealing strip matching the sealing groove.

[0018] According to some embodiments of the present invention, the liquid storage box is provided with a detachable end cover, the oxygen exhaust port is provided on the end cover, and the end cover is provided with a water replenishment port.

[0019] According to some embodiments of the present invention, the air supply device is a centrifugal fan, and the centrifugal fan is connected to the outer wall of the storage box.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments in conjunction with the accompanying drawings, in which:

[0022] Figure 1 It is a schematic diagram of the structure of the deoxygenation module, the air supply device and the dehumidification component in some embodiments of the present invention;

[0023] Figure 2 Schematic diagram of the deoxidation module, the air supply device and the dehumidification assembly in some embodiments of the present invention;

[0024] Figure 3 Schematic diagram of the decomposition of the deoxygenation module in some embodiments of the present invention Figure 1 ;

[0025] Figure 4 Schematic diagram of the decomposition of the deoxygenation module in some embodiments of the present invention Figure 2 ;

[0026] Figure 5 It is a partial cross-sectional schematic diagram of the dehumidification component in some embodiments of the present invention.

[0027] The figures are as follows:

[0028] Deoxygenation module 100, gas box 110, gas cavity 111, air inlet 112, air outlet 113, sealing strip 114, electrode assembly 120, cathode 121, diaphragm 122, anode 123, liquid storage box 130, liquid storage cavity 131, oxygen exhaust port 132, support rod 133, pressing plate 134, sealing groove 135, end cover 136, water replenishment port 137;

[0029] Air supply device 200;

[0030] Dehumidification component 300 , gas delivery pipe 310 , U-shaped pipe section 311 , drainage device 320 , valve body 321 , inner cavity 3211 , drainage port 3212 , float 322 , guide rod 3221 , guide block 3222 . DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 invention.

[0033] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0035] Refrigerators are appliances used to provide a low-temperature environment to store food and other items. They are popular and widely used. Since refrigerators mainly use air cooling, the direct blowing of cold air causes the humidity in the refrigerator compartment to be too low, which accelerates the loss of moisture in the food in the compartment, is not conducive to the preservation of fruits and vegetables and other food, and seriously affects the taste.

[0036] Therefore, in the related art, an oxygen control device is provided in the refrigerator, and the oxygen control device is used to reduce the oxygen content in the storage space. The low oxygen environment can inhibit respiration, inhibit the activity of certain enzymes, inhibit the production of ethylene, and effectively inhibit the growth and reproduction of aerobic bacteria, which is beneficial to the preservation of food. At present, the commonly used oxygen control methods include membrane separation and pressure swing adsorption. The membrane separation method uses the different permeabilities of oxygen and nitrogen in the oxygen-rich membrane. Under a certain pressure difference, oxygen preferentially passes through the oxygen-rich membrane to achieve oxygen separation. However, due to the technology of the oxygen-rich membrane, the oxygen control level is basically around 18%, and the effect is not good. In addition, special power equipment is required to create a pressure difference, and the equipment cost is high. The pressure swing adsorption method uses molecular sieves to selectively adsorb oxygen and nitrogen to achieve oxygen and nitrogen separation. The deoxygenation efficiency is relatively low, and the molecular sieve and air pump have a limited service life and need to be replaced regularly. The consumables are expensive and the user experience is not good.

[0037] In addition, the transpiration of fruits and vegetables will increase the humidity of the storage space, making the humidity in the storage space too high and easily causing condensation. Condensation will help bacteria grow and cause the food to rot, which is not conducive to preserving the food.

[0038] Therefore, an embodiment of the present invention proposes a refrigerator with a deoxygenation system. The deoxygenation system realizes oxygen separation based on electrochemical principles, which can quickly reduce the oxygen content in the storage space. The deoxygenation system also has a dehumidification function, which can effectively reduce the humidity of the storage space.

[0039] Reference Figures 1 to 5 An embodiment of the present invention proposes a deoxygenation system for a refrigerator and a refrigerator. The refrigerator includes a box body, and a compartment is arranged inside the box body. The compartment can be a refrigerator and / or a freezer. A storage box is arranged in the compartment. The storage cavity of the storage box is a storage space for placing fruits, vegetables and other food materials. The deoxygenation system is connected to the storage box. The deoxygenation system can reduce the oxygen concentration and humidity of the storage space, help keep fruits, vegetables and other food materials fresh, increase the storage time and maintain the taste.

[0040] The deoxygenation system includes a deoxygenation module 100, an air supply device 200 and a dehumidification component 300. The deoxygenation system is arranged in a compartment of the refrigerator, wherein the deoxygenation module 100 includes a gas box 110, an electrode assembly 120 and a liquid storage box 130. The gas box 110 and the liquid storage box 130 are connected and fixed as a whole. A gas cavity 111 is formed inside the gas box 110, and a liquid storage cavity 131 is formed inside the liquid storage box 130. The gas cavity 111 and the liquid storage cavity 131 are connected to each other. The gas cavity 111 is used to accommodate air, and the liquid storage cavity 131 is used to accommodate electrolyte. The electrolyte can be an acidic solution or an alkaline solution according to the electrode assembly 120. For example, the electrolyte can be an alkaline solution such as potassium carbonate solution and potassium hydroxide solution, or an acidic solution such as sulfuric acid and hydrochloric acid.

[0041] The function of the air supply device 200 is to drive the air flow. An air inlet 112 and an air outlet 113 connected to the gas cavity 111 are provided on the outer wall of the gas box 110. The air supply device 200 is connected to the deoxygenation module 100. The air inlet end of the air supply device 200 is connected to the storage cavity of the storage box, and the exhaust end of the air supply device 200 is connected to the air inlet 112. The air in the storage cavity is extracted through the air supply device 200 and then input into the gas cavity 111 of the gas box 110.

[0042] The electrode assembly 120 includes a cathode 121, a diaphragm 122 and an anode 123. The cathode 121 and the anode 123 are distributed on both sides of the diaphragm 122. The cathode 121 is located on the side close to the gas chamber 111, and the anode 123 is located on the side close to the liquid storage chamber 131. The diaphragm 122 has an insulating property and plays a role of separation. The diaphragm 122 also plays a role of blocking the electrolyte, so that most of the electrolyte remains in the liquid storage chamber 131 area where the anode 123 is located. The electrolyte keeps the diaphragm 150 moist and can meet the requirements of ionized oxygen permeation. The distance between the cathode 121 and the anode 123 is extremely small, which is conducive to reducing resistance, reducing heat, and facilitating the stable operation of the oxygen control system. The cathode 121 is coated with an oxygen reduction reaction catalyst, and the anode 123 is coated with an oxygen evolution reaction catalyst. When air contacts the cathode 121, oxygen is converted into ionized oxygen under the action of a negative potential and the oxygen reduction catalyst. The ionized oxygen passes through the diaphragm 122 and enters the liquid storage chamber 131. Under the action of a positive potential and the oxygen evolution reaction catalyst, the ionized oxygen is converted into oxygen molecules and precipitated. An oxygen exhaust port 132 is provided at the upper end of the liquid storage box 130, and oxygen is discharged from the oxygen exhaust port 132.

[0043] It is understandable that the oxygen reduction reaction catalyst coated on the cathode 121 can be a platinum-based catalyst, which is a general term for catalysts made with metal platinum as the main active component. Platinum metal mesh, platinum black, or platinum on a carrier such as alumina are usually used, and may also contain promoter components such as metal rhenium. Platinum-based catalysts have high catalytic activity, strong selectivity, convenient catalyst preparation, and small usage. The catalytic performance can be optimized by changing and improving the manufacturing method, compounding with other metals or promoter active components, etc. The oxygen precipitation reaction catalyst coated on the anode 123 can be an iridium-based catalyst. Iridium-based catalysts are usually catalysts made by impregnating active metal iridium on alumina or other carriers and undergoing special treatment. According to different usage requirements, the active metal iridium content of the catalyst is usually 0.3% to 30%.

[0044] It is understandable that after the oxygen in the air is separated, the remaining majority is nitrogen, which is output from the gas outlet 113 of the gas box 110 and enters the dehumidification component 300. The dehumidification component 300 includes a gas pipe 310 and a drainage device 320. The two ends of the gas pipe 310 are connected to the gas outlet 113 and the storage cavity to transport the nitrogen back to the storage cavity, reduce the oxygen concentration in the storage cavity and maintain air pressure balance. The dehumidification component 300 is set in a low temperature area. The temperature of the low temperature area is lower than the temperature of the storage cavity, which can promote the condensation of water vapor in the nitrogen, thereby reducing the humidity of the nitrogen. The drainage device 320 is set at the low point of the gas pipe 310, and the condensed water is drained away by the drainage device 320.

[0045] Fruits, vegetables and other food materials are placed in the storage cavity of the storage box, the deoxygenation system is running, the electrode assembly 120 is powered on, the electrolyte is stored in the liquid storage cavity 131 of the deoxygenation module 100, the anode 123 is immersed in the electrolyte, and the air in the storage space is transported into the gas cavity 111 through the gas supply device 200. The air contacts the cathode 121. Under the action of the negative potential of the cathode 121 and the oxygen reduction catalyst, the oxygen is converted into ionized oxygen. The chemical reaction formula is: O2+H2O+2e - =HO2 - +OH - , ionized oxygen can pass through the film 120 and move to the liquid storage chamber 131. Under the action of the positive potential of the anode 123 and the oxygen precipitation catalyst, the ionized oxygen is converted into oxygen and precipitated. The chemical reaction formula is: HO2 - +OH - -2e - =O2+H2O, achieving the purpose of separating oxygen, and the separated oxygen is discharged through the oxygen outlet 132; after the oxygen is separated, the remaining nitrogen enters the gas pipe 310 of the dehumidification component 300, flows through the low-temperature area, and the water vapor in the nitrogen is condensed and discharged through the drainage device 320, reducing the humidity of the nitrogen. The nitrogen eventually returns to the storage space, thereby reducing the oxygen concentration and humidity of the storage space, which is beneficial to the preservation of fruits and vegetables. The oxygen control system uses air as raw material and consumes electrical energy to achieve selective separation of oxygen under normal pressure, thereby reducing the oxygen concentration in the storage space. The dehumidification component 300 uses the low-temperature area of ​​the refrigerator to condense water vapor to reduce humidity, helping to preserve fruits and vegetables and other ingredients.

[0046] It can be understood that the function of the air supply device 200 is to drive the air flow. The air supply device 200 can select a centrifugal fan or an air pump, etc. If the air supply device 200 selects a centrifugal fan, the centrifugal fan is installed on the outer wall of the storage box, and the storage box opens an air vent to connect the centrifugal fan. The centrifugal fan has a large air volume, which helps to speed up deoxygenation.

[0047] It should be understood that, as a refrigeration device, the refrigerator has a plurality of optional low-temperature areas, such as the position near the air outlet of the compartment, the freezer, the position near the evaporator, etc., where the dehumidification component 300 can be arranged to use the low temperature to promote the condensation of water vapor in the nitrogen to reduce humidity. Usually, the storage box is arranged in the refrigerator compartment, and part of the air delivery pipe 310 of the dehumidification component 300 extends to the freezer compartment, and the low temperature of the freezer compartment is used to promote the condensation of water vapor in the nitrogen to achieve the dehumidification effect.

[0048] In addition, a separate air duct may be opened to guide the cold air passing through the evaporator to the low-temperature area, and the low temperature of the cold air may be used to cause the water vapor in the air pipe 310 to condense, thereby achieving the purpose of dehumidification.

[0049] It should be understood that the deoxygenation system can also be applied to other food storage equipment. A separate refrigeration module can be used to create a low-temperature area to promote condensation of water vapor in the gas pipe 310 to achieve the purpose of dehumidification.

[0050] Reference Figure 2 and Figure 5 It is understandable that the water vapor in the gas pipe 310 condenses into water droplets and then is drained away through the drainage device 320. The condensed water needs to be concentrated first. The drainage device 320 is arranged at the low point of the gas pipe 310 by using the characteristic that water flows downward under the action of gravity. Considering that the condensed water also needs to be prevented from entering the storage box, a U-shaped pipe section 311 is provided in the gas pipe 310. The U-shaped pipe section 311 is used to concentrate and store the condensed water, and the drainage device 320 is arranged at the lowest point of the U-shaped pipe section 311, so that the drainage device 320 can drain all the condensed water, and the U-shaped pipe section 311 can prevent the condensed water from flowing away and avoid the condensed water from entering the storage box. The U-shaped pipe section 311 has a certain volume. Even if the drainage device 320 fails, the U-shaped pipe section 311 can store the condensed water. The gas pipe 310 can be set to be transparent, and the condensed water in the U-shaped pipe section 311 can be directly observed to help eliminate the failure of the drainage device 320.

[0051] It is understandable that there are other structures that can play the role of recording condensed water, such as gas-liquid separators, liquid storage tanks and the like, which can also concentrate condensed water for easy discharge.

[0052] Reference Figure 5In some embodiments, the drainage device 320 adopts a float structure. The drainage device 320 includes a valve body 321 and a float 322. An inner cavity 3211 is arranged inside the valve body 321. The lower end of the valve body 321 is a drain port 3212 connected to the inner cavity 3211, and the upper end of the inner cavity 3211 is connected to the gas pipe 310. In order to smoothly drain all the condensed water, the drain port 3212 is usually set at the lowest point of the valve body 321, and the float 322 is arranged in the inner cavity 3211. Due to the effect of gravity, the float 322 automatically closes the drain port 3212. When the amount of condensed water entering the inner cavity 3211 reaches a set value, the float 322 is floated due to the buoyancy of the condensed water, thereby opening the drain port 3212. The condensed water is discharged from the drain port 3212, and the condensed water can be guided to the water receiving box or used for cooling the condenser through a pipeline; when the amount of condensed water is lower than the set value, the float 322 closes the drain port 3212 again. Condensed water is continuously generated, and the float 322 repeats the above steps to drain the condensed water.

[0053] It is understandable that when the float 322 closes the drain port 3212, in order to improve the sealing performance, the lower end of the inner cavity 3211 is set to be conical, and the shape of the float 322 is correspondingly set to match the conical surface of the inner cavity 3211. The float 322 and the lower end of the inner cavity 3211 fit each other to improve the sealing performance, and the conical structure is conducive to the floating of the float 322, reducing the risk of getting stuck. Of course, the inner cavity 3211 and the float 322 can also be set to other shapes, such as cylindrical, spherical, etc., as long as the two can fit together to achieve sealing.

[0054] Reference Figure 5 A guide rod 3221 is provided at the lower end of the float 322, and a guide block 3222 is mounted on the guide rod 3221. The guide block 3222 is arranged in the drain port 3212. The shape of the guide block 3222 matches the drain port 3212, and the guide block 3222 is provided with a plurality of through holes for condensed water to flow. The guide block 3222 plays a protective role, preventing debris from entering the drain port 3212, which is conducive to reducing the risk of the float 322 getting stuck.

[0055] In other embodiments, the structure of the drainage device 320 includes a shell and a sealing plate. The shell is provided with a water collector to connect to the gas delivery pipe 310. A water outlet connected to the water collection chamber is provided at the lower end of the shell. The sealing plate is arranged below the water outlet, and the sealing plate is connected to a tension spring. The tension spring is used to keep the sealing plate in a state of closing the water outlet. When the condensed water in the water collection chamber increases and the gravity of the condensed water is greater than the tension of the tension spring, the sealing plate moves down and opens the water outlet to drain the condensed water. When the gravity of the condensed water in the water collection chamber is less than the tension of the tension spring, the sealing plate closes the water outlet again. As the condensed water increases, the water outlet will be repeatedly opened to drain the condensed water.

[0056] Reference Figure 3 and Figure 4 The liquid storage box 130 is provided with a connecting port to connect to the gas chamber 111. In order to install the electrode assembly 120, a plurality of support rods 133 are arranged in the connecting port. The electrode assembly 120 is installed on the plurality of support rods 133. The volume of the support rods 133 is small to minimize the obstruction to the movement of ionized oxygen. The plurality of support rods 133 provide a mounting structure and support to fix the electrode assembly 120.

[0057] The anode 123 may be made of a nickel mesh, which may be deformed. In order to keep the anode 123 flat, the liquid storage box 130 is connected with a pressing plate 134, which is located in the liquid storage chamber 131. The pressing plate 134 is a flat plate, and the pressing plate 134 abuts against the anode 123. The pressing plate 134 may be a metal plate or a plastic plate with greater rigidity. The pressing plate 134 is used to press the anode 123, so that the anode 123 remains flat, which is conducive to the anode 123 contacting the electrolyte and promoting the conversion of ionized oxygen into oxygen. A plurality of vents are provided on the pressing plate 134 for the precipitated oxygen to be discharged. The pressing plate 134 and the plurality of support rods 133 cooperate to fix the electrode assembly 120 to improve stability.

[0058] It is understandable that the connection between the liquid storage box 130 and the gas box 110 needs to meet the sealing requirements, see Figure 3 and Figure 4 A sealing groove 135 is provided on the side of the liquid storage box 130 facing the gas box 110. The sealing groove 135 surrounds the communication port. The gas box 110 is provided with a sealing strip 114. The sealing strip 114 is installed in the sealing groove 135 to achieve sealing. The sealing strip 114 can be an independent component or a structure fixed to the gas box 110. The sealing strip 114 and the sealing groove 135 are both annular to prevent gas leakage and liquid leakage, and improve the operation stability of the deoxygenation module 100. Of course, other sealing structures can also be used between the liquid storage box 130 and the gas box 110, such as sealant, welding, etc.

[0059] Refer to the figure and Figure 4 It is understood that the liquid storage box 130 is provided with a detachable end cap 136, and the end cap 136 is provided with an oxygen discharge port 132 and a water replenishment port 137. The water replenishment port 137 is used to add and replenish the electrolyte, and a bell mouth for diversion can be provided to facilitate the flow of the electrolyte. A cover can also be provided to close the water replenishment port 137 to prevent the electrolyte from leaking out.

[0060] The present invention also proposes a refrigerator, which includes a box body, a compartment is arranged inside the box body, and the compartment can be a refrigerator and / or a freezer. A storage box is arranged in the compartment, and the storage cavity of the storage box is a storage space for placing food such as fruits and vegetables. A deoxygenation system is connected to the storage box, and the deoxygenation system includes a deoxygenation module 100, a gas supply device 200 and a dehumidification component 300. The deoxygenation module 100 includes a gas box 110, an electrode assembly 120 and a liquid storage box 130. The gas box 110 and the liquid storage box 130 are connected and fixed as a whole. A gas cavity 111 is formed inside the gas box 110, and a liquid storage cavity 131 is formed inside the liquid storage box 130, and the gas cavity 111 and the liquid storage cavity 131 are connected to each other. The gas cavity 111 is used to accommodate air, and the liquid storage cavity 131 is used to accommodate electrolyte. The function of the air supply device 200 is to drive the air flow. The electrode assembly 120 includes a cathode 121, a diaphragm 122 and an anode 123. The cathode 121 and the anode 123 are distributed on both sides of the diaphragm 122. The cathode 121 is located on the side close to the gas cavity 111, and the anode 123 is located on the side close to the liquid storage cavity 131. The diaphragm 122 has insulating properties and plays a role of separation. The diaphragm 122 also plays a role of blocking the electrolyte, so that most of the electrolyte remains in the liquid storage cavity 131 area where the anode 123 is located. The electrolyte keeps the diaphragm 150 moist, which can meet the requirements of ionized oxygen permeation.

[0061] Fruits, vegetables and other food materials are placed in the storage box of the refrigerator, the deoxygenation system is running, the electrode assembly 120 is powered on, the electrolyte is stored in the liquid storage chamber 131 of the deoxygenation module 100, the anode 123 is immersed in the electrolyte, and the air in the storage space is transported into the gas chamber 111 through the gas supply device 200. The air contacts the cathode 121. Under the action of the negative potential of the cathode 121 and the oxygen reduction catalyst, the oxygen is converted into ionized oxygen. The chemical reaction formula is: O2+H2O+2e - =HO2 - +OH - , ionized oxygen can pass through the film 120 and move to the liquid storage chamber 131. Under the action of the positive potential of the anode 123 and the oxygen precipitation catalyst, the ionized oxygen is converted into oxygen and precipitated. The chemical reaction formula is: HO2 - +OH - -2e -=O2+H2O, achieving the purpose of separating oxygen, and the separated oxygen is discharged through the oxygen outlet 132; after the oxygen is separated, the remaining nitrogen enters the gas pipe 310 of the dehumidification component 300, flows through the low-temperature area, and the water vapor in the nitrogen is condensed and discharged through the drainage device 320, reducing the humidity of the nitrogen. The nitrogen eventually returns to the storage space, thereby reducing the oxygen concentration and humidity of the storage space, which is beneficial to the preservation of fruits and vegetables. The oxygen control system uses air as raw material and consumes electrical energy to achieve selective separation of oxygen under normal pressure, thereby reducing the oxygen concentration in the storage space. The dehumidification component 300 uses the low-temperature area of ​​the refrigerator to condense water vapor to reduce humidity, helping to preserve fruits and vegetables and other ingredients.

[0062] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A refrigerator, characterized in that include: A box body, wherein a compartment is provided inside the box body, and a storage box is arranged in the compartment; A deoxygenation module is located in the compartment, the deoxygenation module includes a gas box, an electrode assembly and a liquid storage box, the gas box is provided with a gas cavity, the liquid storage box is provided with a liquid storage cavity, the upper end of the liquid storage box is provided with an oxygen exhaust port, the gas box is connected to the liquid storage box, the gas box is provided with an air inlet and an air outlet connected to the gas cavity, the electrode assembly includes a cathode, a diaphragm and an anode, the cathode is coated with an oxygen reduction reaction catalyst, the anode is coated with an oxygen evolution reaction catalyst, the cathode and the anode are distributed on both sides of the diaphragm, and the diaphragm is located between the gas cavity and the liquid storage cavity; An air supply device connected to the deoxygenation module, an air inlet end of the air supply device is connected to the storage cavity of the storage box, and an exhaust end of the air supply device is connected to the air inlet; The dehumidification component includes an air pipe and a drainage device, wherein the drainage device is arranged at the low point of the air pipe, and the two ends of the air pipe are connected to the air outlet and the storage cavity. The dehumidification component is located in a low-temperature area, and the temperature of the low-temperature area is lower than the temperature of the storage cavity to condense water vapor.

2. The refrigerator according to claim 1, characterized in that: The low temperature area is close to the air outlet of the compartment.

3. The refrigerator according to claim 1, characterized in that: The compartment comprises a refrigerating chamber and a freezing chamber, and the low temperature area is located in the freezing chamber.

4. The refrigerator according to claim 1, characterized in that: The drainage device includes a valve body and a float. The valve body is provided with an inner cavity and a drain port. The inner cavity is connected to the air supply pipe, and the drain port is connected to the lowest point of the inner cavity. The float is located in the inner cavity and can close the drain port.

5. The refrigerator according to claim 4, characterized in that: The lower end of the inner cavity is configured to be conical, and the lower end of the float is configured to be provided with a conical surface matching the inner cavity.

6. The refrigerator according to claim 4, characterized in that: A guide rod is arranged at the lower end of the float, and a guide block is sleeved on the guide rod. The guide block is located in the drain port, and the guide block is provided with a plurality of through holes.

7. The refrigerator according to claim 1, characterized in that: The drainage device includes an outer shell and a sealing plate. The outer shell is provided with a water collecting chamber connected to the air pipe. The lower end of the outer shell is provided with a water outlet connected to the water collecting chamber. The sealing plate is located below the water outlet. The sealing plate is connected to a tension spring so that the sealing plate closes the water outlet.

8. The refrigerator according to claim 1, characterized in that: The gas delivery pipe is provided with a U-shaped pipe section, and the drainage device is arranged at the lowest point of the U-shaped pipe section.

9. The refrigerator according to claim 1, characterized in that: The liquid storage box is provided with a communication port, a plurality of support rods are arranged in the communication port, and the electrode assembly is connected to the plurality of support rods.

10. The refrigerator according to claim 9, characterized in that: The liquid storage box is connected with a pressing plate, the pressing plate is located in the liquid storage cavity, the pressing plate is a flat plate and abuts against the anode, and the pressing plate is provided with a plurality of vent holes.

11. The refrigerator according to claim 9, characterized in that: The side of the liquid storage box facing the gas box is provided with a sealing groove, the sealing groove surrounds the communication port, and the gas box is provided with a sealing strip matching the sealing groove.

12. The refrigerator according to claim 1, characterized in that: The liquid storage box is provided with a detachable end cover, the oxygen exhaust port is arranged on the end cover, and the end cover is provided with a water replenishment port.

Images