Carbon dioxide generator, controlled atmosphere fresh-keeping device and refrigerator

Abstract

The invention belongs to the technical field of refrigeration equipment, and discloses a carbon dioxide generator, a modified atmosphere fresh-keeping device and a refrigerator, the carbon dioxide generator comprises a liquid storage box, a carbonate consumable assembly and an electrode assembly, a liquid storage cavity is formed in the liquid storage box to contain electrolyte, and the liquid storage box is provided with a mounting hole and an exhaust port which are communicated with the liquid storage cavity; the exhaust port is located at the upper end of the liquid storage box, the carbonate consumable assembly is connected to the liquid storage box and penetrates through the mounting hole, and the electrode assembly is connected to the liquid storage box and comprises an anode and a cathode which are located in the liquid storage cavity. Electrolyte (such as Na2SO4 solution) is injected into the liquid storage cavity of the liquid storage box, the electrode assembly is powered on, water of the electrolyte is electrolyzed to generate negative electrons and form a subacid environment, carbonate of the carbonate consumable assembly reacts in the subacid environment to generate carbon dioxide gas, and generation of the carbon dioxide gas can be controlled by controlling the electrode assembly, so that the carbon dioxide gas is generated, and the service life of the carbon dioxide consumable assembly is prolonged. The use is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, and in particular to a carbon dioxide generator, a gas-conditioning fresh-keeping device and a refrigerator. Background Art

[0002] A refrigerator is a refrigeration device that maintains a stable low temperature, used to keep food or other items at a low temperature. For food preservation, a carbon dioxide concentration of 1% to 5% can effectively inhibit the respiration of fruits and vegetables and reduce the consumption of organic matter; in addition, a high concentration of 10% to 20% carbon dioxide can maintain the color of meat and achieve long-term preservation of meat.

[0003] In the related art, some refrigerators use steel cylinders to store carbon dioxide gas for use. However, steel cylinders are pressure vessels with high costs. In addition, after the carbon dioxide gas is used, it is difficult to replenish it, which is inconvenient to use. 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 carbon dioxide generator, which has the advantages of being easy to use and low in cost.

[0005] The present invention also provides an atmosphere-controlled fresh-keeping device and a refrigerator with the carbon dioxide generator.

[0006] According to the first aspect of the present invention, the carbon dioxide generator comprises a liquid storage box, a carbonate consumable assembly and an electrode assembly. The liquid storage box is formed with a liquid storage cavity to accommodate an electrolyte. The liquid storage box is provided with a mounting hole and an exhaust port connected to the liquid storage cavity. The exhaust port is located at the upper end of the liquid storage box. The carbonate consumable assembly is connected to the liquid storage box. The carbonate consumable assembly is passed through the mounting hole. The electrode assembly is connected to the liquid storage box. The electrode assembly comprises an anode and a cathode located in the liquid storage cavity.

[0007] The carbon dioxide generator according to the first embodiment of the present invention has at least the following beneficial effects:

[0008] An electrolyte (such as Na2SO4 solution) is injected into the liquid storage chamber of the liquid storage box, and the electrode assembly is energized to electrolyze the water in the electrolyte to generate negative electrons, forming a slightly acidic environment. The carbonate in the carbonate consumable assembly reacts in the slightly acidic environment to generate carbon dioxide gas. The generation of carbon dioxide gas can be controlled by controlling the electrode assembly. It is easy to use. The carbon dioxide gas can be input into the atmosphere-controlled preservation device of the refrigerator to help preserve fruits, vegetables or meat. The carbon dioxide generator has the advantages of compact structure and low cost.

[0009] According to some embodiments of the first aspect of the present invention, the carbonate consumable component is provided with a carbonate column, and at least a portion of the carbonate column is located in the liquid storage chamber and can contact the electrolyte.

[0010] According to some embodiments of the first aspect of the present invention, the carbonate column is made of calcium carbonate, and the carbonate column is a solid calcium carbonate with an integrated structure.

[0011] According to some embodiments of the first aspect of the present invention, the carbonate consumables assembly is provided with an end cover, the end cover is fixedly connected to the liquid storage box, and the end cover closes the mounting hole.

[0012] According to some embodiments of the first aspect of the present invention, the end cap is threadedly connected to the liquid storage box, and a handle is provided on the end surface of the end cap facing away from the liquid storage box to twist the end cap.

[0013] According to some embodiments of the first aspect of the present invention, the liquid storage box is provided with a mounting seat, the mounting seat is located in the liquid storage cavity, the mounting seat is provided with an inner cavity for accommodating the carbonate consumable assembly, and the mounting seat is provided with a connecting hole to connect the inner cavity with the liquid storage cavity.

[0014] According to some embodiments of the first aspect of the present invention, the mounting base includes a base plate and a plurality of support plates, wherein the plurality of support plates are distributed at circumferential intervals around the mounting hole, and one end of the plurality of support plates is connected to the base plate, and the other end is connected to the liquid storage box.

[0015] According to some embodiments of the first aspect of the present invention, the anode and the cathode are arranged in parallel, the anode and the cathode are metal plates, and the metal plates are provided with a plurality of through holes.

[0016] According to some embodiments of the first aspect of the present invention, the electrode assembly is connected to a controllable power module, and the controllable power module is capable of controlling the on and off of power to the electrode assembly.

[0017] According to some embodiments of the first aspect of the present invention, a liquid injection port is provided at the upper end of the liquid storage box to replenish the electrolyte, and a liquid injection cap is connected to the liquid storage box to close the liquid injection port.

[0018] The controlled atmosphere fresh-keeping device according to the second embodiment of the present invention comprises the carbon dioxide generator as described in the first embodiment.

[0019] A refrigerator according to an embodiment of the third aspect of the present invention comprises the atmosphere-controlled freshness-keeping device as described in the embodiment of the second aspect.

[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 A schematic structural diagram of a carbon dioxide generator according to an embodiment of the first aspect of the present invention;

[0023] Figure 2 A cross-sectional view of a carbon dioxide generator according to an embodiment of the first aspect of the present invention;

[0024] Figure 3 It is an exploded schematic diagram of a carbon dioxide generator according to an embodiment of the first aspect of the present invention;

[0025] Figure 4 It is a structural schematic diagram of a liquid storage box in an embodiment of the first aspect of the present invention;

[0026] Figure 5 It is a cross-sectional view of the liquid storage box in the embodiment of the first aspect of the present invention.

[0027] The figures are as follows:

[0028] Liquid storage box 100, liquid storage cavity 101, mounting hole 102, exhaust port 103, liquid injection port 104, mounting seat 110, inner cavity 111, communication hole 112, bottom plate 113, support plate 114;

[0029] Carbonate consumable assembly 200, carbonate column 210, end cap 220, handle 221;

[0030] Electrode assembly 300 , anode 310 , cathode 320 . 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 based on 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 low, and the food in the compartment is prone to lose moisture, resulting in serious water loss, dryness and oxidation on the surface of the food, which is particularly detrimental to the preservation of fruits, vegetables and meat, and seriously affects the taste.

[0036] Studies have shown that an environment with a carbon dioxide concentration of 1% to 5% can effectively inhibit the respiration of fruits and vegetables, reduce the consumption of organic matter, maintain cell vitality, and help maintain the excellent flavor and aroma of fruits and vegetables; while an environment with a carbon dioxide concentration of 10% to 20% can maintain the color of meat ingredients and achieve long-term preservation of meat. In addition, carbon dioxide is also a natural preservative with bactericidal and antibacterial effects. It can inhibit bacterial growth while preserving food, making food storage safer and cleaner.

[0037] Therefore, some refrigerators are equipped with storage rooms, and carbon dioxide gas is stored in steel cylinders. The carbon dioxide gas is input into the storage room to obtain a carbon dioxide-rich environment to help keep food fresh. However, steel cylinders are pressure vessels, which are expensive and dangerous. After the carbon dioxide gas in the cylinder is used, it is troublesome to refill the carbon dioxide gas. Refrigerator users cannot do it by themselves and must ask professionals to provide door-to-door service, which is costly and has a poor user experience.

[0038] To this end, an embodiment of the first aspect of the present invention proposes a carbon dioxide generator to provide carbon dioxide gas to a refrigerator, which is simple to use and reduces costs.

[0039] Reference Figures 1 to 5The carbon dioxide generator proposed in the embodiment of the first aspect of the present invention is applied to the atmosphere-controlled fresh-keeping device of the refrigerator. The carbon dioxide gas generated by the carbon dioxide generator is input into the atmosphere-controlled fresh-keeping device to help keep the food fresh. The carbon dioxide generator includes a liquid storage box 100, a carbonate consumable assembly 200 and an electrode assembly 300. The liquid storage box 100 serves as the shell of the carbon dioxide generator and is also used to install the carbonate consumable assembly 200 and the electrode assembly 300. A liquid storage chamber 101 is formed inside the liquid storage box 100. The liquid storage chamber 101 is used to accommodate an electrolyte. The electrolyte can be a Na2SO4 solution or other salt solutions. An installation hole 102 connected to the liquid storage chamber 101 is provided on the outer wall of the liquid storage box 100 to install the carbonate consumable assembly 200. The carbonate consumable assembly 200 is penetrated through the installation hole 102 and at least partially extends into the liquid storage chamber 101 to contact the electrolyte. It should be understood that the mounting hole 102 can be set on any side of the liquid storage box 100, as long as the carbonate consumable assembly 200 can extend into the liquid storage chamber 101 to contact the electrolyte. Among them, setting the mounting hole 102 on the upper side of the liquid storage box 100 is a better choice. On the one hand, it is convenient for assembly operation. On the other hand, the mounting hole 102 is located on the upper side of the liquid storage box 100, which can reduce the sealing requirements at the mounting hole 102 and reduce production costs.

[0040] The outer wall of the liquid storage box 100 is also provided with an exhaust port 103 connected to the liquid storage chamber 101. The exhaust port 103 is used to discharge the carbon dioxide gas generated by the carbon dioxide generator. Considering that the carbon dioxide gas is concentrated at the upper end of the liquid storage chamber 101 after being precipitated from the electrolyte, the exhaust port 103 is arranged at the upper end of the liquid storage box 100, and the exhaust port 103 includes a pipe section for easy connection, so as to transport the carbon dioxide gas to the gas conditioning and fresh-keeping device. It can be understood that in order to promote the carbon dioxide gas to gather at the exhaust port 103, the upper inner wall of the liquid storage box 100 can be set to an upwardly contracted shape, such as a cone or a multi-faceted pyramid, and the exhaust port 103 is located at the highest point. The carbon dioxide gas precipitated from the electrolyte, under the restriction of the inner wall of the liquid storage box 100, finally flows into the exhaust port 103, thereby accelerating the output of the carbon dioxide gas.

[0041] The electrode assembly 300 is connected to the liquid storage box 100 , wherein the electrode assembly 300 includes an anode 310 and a cathode 320 , and the anode 310 and the cathode 320 are located in the liquid storage chamber 101 , and the water in the liquid storage chamber 101 is electrolyzed by the anode 310 and the cathode 320 .

[0042] When the carbon dioxide generator is running, the liquid storage chamber 101 of the liquid storage box 100 is filled with electrolyte (Na2SO4 solution), the electrode assembly 300 is energized, and the water in the electrolyte is electrolyzed through the anode 310 and the cathode 320 to generate negative electrons. The chemical formula is: H2O=2H + +1 / 2O2+2e- , so that a slightly acidic environment is formed in the liquid storage chamber 101. Taking calcium carbonate as an example, the calcium carbonate of the carbonate consumable component 200 reacts with the electrolyte in a slightly acidic environment, and the chemical formula is: CaCO3+2H + +SO4 2- =CaSO4+CO2+H2O, the generated carbon dioxide gas is discharged through the exhaust port 103, and the carbon dioxide gas is input into the atmosphere conditioning preservation device of the refrigerator to help preserve fruits, vegetables or meat. By controlling the electrode assembly 300, the generation of carbon dioxide gas can be controlled, which is convenient to use, and the generation and stop of carbon dioxide can be controlled immediately. The carbon dioxide generator has a compact structure and low cost.

[0043] It is understandable that an environment with a carbon dioxide concentration of 1% to 5% can effectively inhibit the respiration of fruits and vegetables, reduce the consumption of organic matter, maintain cell vitality, and help maintain the excellent flavor and aroma of fruits and vegetables; an environment with a carbon dioxide concentration of 10% to 20% can maintain the color of meat ingredients and achieve long-term preservation of meat. The atmosphere-controlled preservation device usually has a closed chamber, and carbon dioxide gas is input into the chamber to help preserve the ingredients in the chamber. In order to accurately control the concentration of carbon dioxide in the chamber, the atmosphere-controlled preservation device is provided with a carbon dioxide detection sensor, which can be an infrared carbon dioxide sensor, a catalytic carbon dioxide sensor, etc. The carbon dioxide detection sensor is used to detect the concentration of carbon dioxide in the chamber, and a feedback signal is used to control the operation of the carbon dioxide generator, so that the concentration of carbon dioxide in the chamber is controlled within an appropriate range to improve the preservation effect.

[0044] It is understandable that current refrigerators have more and more functions. A sparkling water device can be installed in the refrigerator. The carbon dioxide gas is provided by a carbon dioxide generator. The sparkling water device is pressurized by an air pump and injects high-pressure carbon dioxide gas into the beverage to produce sparkling water, thereby improving the functionality of the refrigerator and meeting the needs of users.

[0045] Reference Figure 2 and Figure 3 In some embodiments, the carbonate consumable component 200 is provided with a carbonate column 210, at least part of the carbonate column 210 is located in the liquid storage chamber 101, at least part of the carbonate column 210 contacts the electrolyte, and during the operation of the carbon dioxide generator, the carbon dioxide gas precipitates on the surface of the carbonate column 210, then moves upward, and is finally discharged from the exhaust port 103. The carbonate column 210 can be cylindrical or other polygonal shapes, wherein the cylindrical shape is a preferred choice, and the carbonate column 210 has the largest specific surface area, which is conducive to promoting the reaction to generate carbon dioxide gas.

[0046] It is understood that in some embodiments, the carbonate is made of calcium carbonate, and the carbonate column 210 is a solid calcium carbonate with an integrated structure. Calcium carbonate is an easily available low-cost carbonate that exists in large quantities in nature, such as coral, limestone, etc., which is conducive to reducing costs. Of course, other carbonates, such as barium carbonate, etc., can also be used.

[0047] It is understandable that if Figure 2 and Figure 3 As shown, in some embodiments, the carbonate consumable assembly 200 is provided with an end cap 220, the carbonate column 210 is connected to the side of the end cap 220, and the end cap 220 is fixed to the liquid storage box 100, and the end cap 220 closes the mounting hole 102, plays a leak-proof role, and prevents the electrolyte from leaking out. The end cap 220 also serves as a gripper of the carbonate consumable assembly 200, which is convenient for workers to take the carbonate consumable assembly 200 during the assembly process.

[0048] The connection structure between the end cap 220 and the liquid storage box 100 can be selected in various forms, such as the end cap 220 is installed in the installation hole 102, such as Figure 2 As shown, the end cap 220 is connected to the liquid storage box 100 by threads, an internal thread is set on the wall surface of the mounting hole 102, and an external thread is set on the outer wall of the end cap 220. The end cap 220 can be screwed into the mounting hole 102 to achieve a fixed connection. In order to facilitate the disassembly and assembly of the end cap 220, a handle 221 is set on the end face of the end cap 220 away from the liquid storage box 100. The handle 221 is convenient for workers to operate to twist the end cap. Alternatively, the end cap 220 is attached to the side of the liquid storage box 100 and is fixed to the liquid storage box 100 by bolts. A sealing ring is set between the end cap 220 and the liquid storage box 100 to prevent leakage of electrolyte, and the sealing ring surrounds the mounting hole 102. Other connection structures are not described one by one, and they can play a fixing role.

[0049] Reference Figure 4 and Figure 5 In some embodiments of the first aspect of the present invention, the liquid storage box 100 is provided with a mounting seat 110 for matching the carbonate consumable assembly 200, the mounting seat 110 is arranged in the liquid storage cavity 101, and the mounting seat 110 is provided with an inner cavity 111 for accommodating the carbonate consumable assembly 200, and a connecting hole 112 is provided on the outer wall of the mounting seat 110, and the inner cavity 111 is connected with the liquid storage cavity 101 by the connecting hole 112. It can be understood that the inner cavity 111 is also connected to the mounting hole 102. Figure 2 As shown, when the carbonate consumable assembly 200 is installed in the liquid storage box 100, the carbonate column 210 is inserted into the inner cavity 111 of the mounting seat 110, and the electrolyte enters the inner cavity 111 through the connecting hole 112 to contact the carbonate column 210. The mounting seat 110 plays a role of protection and positioning.

[0050] Reference Figure 5 It can be understood that the structure of the mounting seat 110 includes a bottom plate 113 and a plurality of support plates 114, and the plurality of support plates 114 are distributed at intervals around the circumference of the mounting hole 102. The support plates 114 can be set as arc-shaped plates to match the shape of the mounting hole 102. One end of the plurality of support plates 114 is connected to the bottom plate 113, and the other end is connected to the liquid storage box 100, so that an inner cavity 111 is formed between the bottom plate 113 and the plurality of support plates 114, and the gap between two adjacent support plates 114 forms a connecting hole 112. A gap is reserved between the plurality of support plates 114 and the carbonate column 210, so that the electrolyte can fully contact the carbonate column 210. In addition, the mounting seat 110 and the liquid storage box 100 can be an integrally formed structure, for example, the liquid storage box 100 is a plastic part, which is integrally formed by injection molding. A supporting structure or a positioning structure can also be provided on the bottom plate 113 and / or the plurality of support plates 114 to limit the carbonate column 210 and improve stability.

[0051] Reference Figure 2 and Figure 3 It is understood that the anode 310 and cathode 320 of the motor assembly 300 are arranged in parallel, and the anode 310 and cathode 320 are both metal plates, and a plurality of through holes are provided on the metal plates to increase the contact area with the electrolyte. The anode 310 and cathode 320 can be titanium metal plates, and a precious metal coating is provided on the surface of the titanium metal plate. The precious metal can be selected from platinum, ruthenium or iridium to increase the speed of electrolysis. The anode 310 and cathode 320 are also provided with terminals extending to the outside of the liquid storage box 100 to facilitate the connection of the circuit.

[0052] It can be understood that the electrode assembly 300 is connected to a controllable power supply module, which is configured to control the power on and off of the electrode assembly 300, thereby controlling the negative electrons generated by electrolysis, and ultimately controlling the generation of carbon dioxide gas. Carbon dioxide is only generated when the atmosphere-controlled preservation device needs carbon dioxide gas. On the one hand, it can reduce the storage structure of carbon dioxide, reduce structural components and occupied space, and on the other hand, reduce the consumption of electrolyte and carbonate, and increase the service life of the carbon dioxide generator.

[0053] It is understandable that, referring to Figure 1 and Figure 2A liquid injection port 104 is provided at the upper end of the liquid storage box 100 to facilitate the replenishment of electrolyte. After the carbon dioxide generator has been used for a period of time, the electrolyte is a Na2SO4 solution, for example, the concentration of the Na2SO4 solution should be maintained at 5% to 25%. When the concentration of the Na2SO4 solution is lower than 5%, a high-concentration Na2SO4 solution needs to be replenished. The user can add the Na2SO4 solution from the liquid injection port 104. The liquid injection port 104 can also be used to pour out the solution in the liquid storage box 100 after use. Usually, the liquid storage box 100 is connected with a liquid injection cap, and the liquid injection cap is used to close the liquid injection port 104 to prevent leakage of the electrolyte and prevent the electrolyte from being contaminated.

[0054] The atmosphere-controlled fresh-keeping device proposed in the second embodiment of the present invention includes a storage box and a carbon dioxide generator of the first embodiment. The atmosphere-controlled fresh-keeping device is usually a drawer-type storage box arranged inside the refrigerator, and the interior of the storage box forms a substantially closed chamber for placing fruits, vegetables or meat ingredients. The carbon dioxide generator includes a liquid storage box 100, a carbonate consumable assembly 200 and an electrode assembly 300. The liquid storage box 100 serves as the shell of the carbon dioxide generator and is used to install the carbonate consumable assembly 200 and the electrode assembly 300. A liquid storage chamber 101 is formed inside the liquid storage box 100. The liquid storage chamber 101 is used to accommodate an electrolyte. The electrolyte can be a Na2SO4 solution or other salt solutions. An installation hole 102 connected to the liquid storage chamber 101 is provided on the outer wall of the liquid storage box 100 to install the carbonate consumable assembly 200. The carbonate consumable assembly 200 is penetrated through the installation hole 102 and at least partially extends into the liquid storage chamber 101 to contact the electrolyte. It should be understood that the mounting hole 102 can be set on any side of the liquid storage box 100, as long as the carbonate consumable assembly 200 can extend into the liquid storage chamber 101 to contact the electrolyte. Among them, setting the mounting hole 102 on the upper side of the liquid storage box 100 is a better choice. On the one hand, it is convenient for assembly operation. On the other hand, the mounting hole 102 is located on the upper side of the liquid storage box 100, which can reduce the sealing requirements at the mounting hole 102 and reduce production costs.

[0055] The outer wall of the liquid storage box 100 is also provided with an exhaust port 103 connected to the liquid storage chamber 101. The exhaust port 103 is used to discharge the carbon dioxide gas generated by the carbon dioxide generator. Considering that the carbon dioxide gas gathers at the upper end of the liquid storage chamber 101 when precipitating in the electrolyte, the exhaust port 103 is arranged at the upper end of the liquid storage box 100, and the exhaust port 103 includes a pipe section to facilitate the pipe connection, so as to transport the carbon dioxide gas to the gas conditioning and fresh-keeping device. It can be understood that in order to promote the carbon dioxide gas to gather at the exhaust port 103, the upper inner wall of the liquid storage box 100 can be set to an upwardly contracted shape, such as a cone or a multi-faceted pyramid, and the exhaust port 103 is located at the highest point. The carbon dioxide gas escaping from the electrolyte is restricted by the inner wall of the liquid storage box 100 and finally flows into the exhaust port 103, thereby accelerating the output of the carbon dioxide gas.

[0056] The electrode assembly 300 is connected to the liquid storage box 100 , wherein the electrode assembly 300 includes an anode 310 and a cathode 320 , and the anode 310 and the cathode 320 are located in the liquid storage chamber 101 , and the water in the liquid storage chamber 101 is electrolyzed by the anode 310 and the cathode 320 .

[0057] When the carbon dioxide generator is running, the liquid storage chamber 101 of the liquid storage box 100 is filled with electrolyte (Na2SO4 solution), the electrode assembly 300 is energized, and the water in the electrolyte is electrolyzed through the anode 310 and the cathode 320 to generate negative electrons. The chemical formula is: H2O=2H + +1 / 2O2+2e - , so that a slightly acidic environment is formed in the liquid storage chamber 101. Taking calcium carbonate as an example, the calcium carbonate of the carbonate consumable component 200 reacts with the electrolyte in a slightly acidic environment, and the chemical formula is: CaCO3+2H + +SO4 2- =CaSO4+CO2+H2O, the generated carbon dioxide gas is discharged through the exhaust port 103, and the carbon dioxide gas is input into the atmosphere conditioning preservation device of the refrigerator to help preserve fruits, vegetables or meat. By controlling the electrode assembly 300, the generation of carbon dioxide gas can be controlled, which is convenient to use, and the carbon dioxide generator has a compact structure and low cost.

[0058] It is understandable that the storage box is connected to a carbon dioxide detection sensor, which can accurately detect the concentration of carbon dioxide in the chamber and feedback the signal to control the operation of the carbon dioxide generator, so as to control the concentration of carbon dioxide in the chamber within a suitable range and improve the preservation effect. The storage of fruits and vegetables requires an environment with a carbon dioxide concentration of 1% to 5%, which can effectively inhibit the respiration of fruits and vegetables, reduce the consumption of organic matter, maintain cell vitality, and help maintain the excellent flavor and aroma of fruits and vegetables; the storage of meat ingredients requires an environment with a carbon dioxide concentration of 10% to 20%, which can maintain the color of meat ingredients and achieve long-term preservation of meat.

[0059] In addition, the controlled atmosphere preservation device includes the entire technical solution of the carbon dioxide generator and has all the technical effects of the carbon dioxide generator, which will not be described one by one.

[0060] The third aspect of the present invention also provides a refrigerator, comprising the controlled atmosphere preservation device of the second aspect of the present invention. The controlled atmosphere preservation device can form a carbon dioxide-rich environment in the internal chamber of the storage box through the carbon dioxide gas provided by the carbon dioxide generator. The storage of fruits and vegetables requires an environment with a carbon dioxide concentration of 1% to 5%, which can effectively inhibit the respiration of fruits and vegetables, reduce the consumption of organic matter, maintain cell vitality, and is conducive to maintaining the excellent flavor and aromatic smell of fruits and vegetables; the storage of meat ingredients requires an environment with a carbon dioxide concentration of 10% to 20%, which can maintain the color of the meat ingredients and achieve long-term preservation of the meat.

[0061] 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 carbon dioxide generator, characterized in that: include: A liquid storage box, wherein a liquid storage cavity is formed inside the liquid storage box to accommodate electrolyte, and the liquid storage box is provided with a mounting hole and an exhaust port communicating with the liquid storage cavity, and the exhaust port is located at the upper end of the liquid storage box; A carbonate consumable component connected to the liquid storage box, and the carbonate consumable component is inserted into the mounting hole; The electrode assembly is connected to the liquid storage box, and the electrode assembly includes an anode and a cathode located in the liquid storage cavity.

2. The carbon dioxide generator according to claim 1, characterized in that The carbonate consumable component is provided with a carbonate column, at least a portion of which is located in the liquid storage chamber and can contact the electrolyte.

3. The carbon dioxide generator according to claim 2, characterized in that: The carbonate column is made of calcium carbonate, and the carbonate column is a solid calcium carbonate with an integrated structure.

4. The carbon dioxide generator according to claim 2 or 3, characterized in that: The carbonate consumables assembly is provided with an end cover, the end cover is fixedly connected to the liquid storage box, and the end cover closes the mounting hole.

5. The carbon dioxide generator according to claim 4, characterized in that The end cover is threadedly connected to the liquid storage box, and a handle is provided on the end surface of the end cover away from the liquid storage box to twist the end cover.

6. The carbon dioxide generator according to claim 1, characterized in that The liquid storage box is provided with a mounting seat, the mounting seat is located in the liquid storage cavity, the mounting seat is provided with an inner cavity for accommodating the carbonate consumable component, and the mounting seat is provided with a connecting hole to connect the inner cavity with the liquid storage cavity.

7. The carbon dioxide generator according to claim 6, characterized in that The mounting seat includes a bottom plate and a plurality of support plates, wherein the plurality of support plates are distributed at intervals around the circumference of the mounting hole, and one end of the plurality of support plates is connected to the bottom plate, and the other end is connected to the liquid storage box.

8. The carbon dioxide generator according to claim 1, characterized in that: The anode and the cathode are arranged in parallel, and the anode and the cathode are metal plates, and the metal plates are provided with a plurality of through holes.

9. The carbon dioxide generator according to claim 1, characterized in that: The electrode assembly is connected to a controllable power module, and the controllable power module can control the on and off of the electrode assembly.

10. The carbon dioxide generator according to claim 1, characterized in that: The upper end of the liquid storage box is provided with a liquid injection port to replenish the electrolyte, and the liquid storage box is connected with a liquid injection cap to close the liquid injection port.

11. A controlled atmosphere fresh-keeping device, characterized in that: Comprising the carbon dioxide generator according to any one of claims 1 to 10.

12. A refrigerator, characterized in that It comprises the controlled atmosphere fresh-keeping device as claimed in claim 11.

Images