Refrigerator

Abstract

The invention relates to the technical field of household appliances, and discloses a refrigerator which comprises a refrigerator body, a drawer, a control panel, a water box, a carbon dioxide collecting device and a ripening module. The drawer is arranged in the accommodating cavity in a push-pull manner; the control panel is arranged on the box body; the water box, the carbon dioxide and collection device and the ripening module are arranged on the inner wall of the accommodating cavity or the inner wall of the drawer; the ripening module comprises a shell, a catalysis cavity is formed in the shell, a water inlet and a carbon dioxide inlet which are communicated with the catalysis cavity are formed in the outer wall of the shell, the water inlet is communicated with the water box, and the carbon dioxide inlet is communicated with the carbon dioxide collecting device; a positive electrode plate and a negative electrode current collecting device which are electrically connected with the control panel are arranged in the catalysis cavity; and an electrolyte membrane is arranged between the positive electrode plate and the negative electrode current collecting device. Exogenous ethylene is adopted for ripening, so that the ripening efficiency is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, in particular to a refrigerator, and more particularly to a ripening refrigerator. Background Art

[0002] Climacteric fruits often need to be picked before they are ripe, so as to ensure the quality and reduce the loss during transportation. However, this also results in the need for consumers to ripen them appropriately after purchase to ensure the taste. At present, the ripening methods adopted by consumers are mostly to put unripe fruits together with ripe fruits such as apples under normal temperature conditions to absorb ethylene therein to achieve the ripening effect. However, this method is often difficult to control the environmental temperature, humidity and microorganisms. Not only is the ripening process slow, but also the fruits are prone to browning and even spoilage due to improper ripening.

[0003] In addition, although there are some ripening refrigerators on the market that can achieve ripening, the existing ripening refrigerators lack exogenous ripening agents and have low ripening efficiency. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a refrigerator that uses electrocatalytic reduction of carbon dioxide to prepare ethylene, realizes ripening with exogenous ethylene, and ensures the ripening efficiency.

[0005] The technical solution adopted by the present invention to solve its technical problems is:

[0006] A refrigerator, comprising:

[0007] A cabinet body that defines an accommodation cavity;

[0008] A drawer that is slidably disposed in the accommodation cavity;

[0009] A control board disposed on the cabinet body;

[0010] A water box disposed on the inner wall of the accommodation cavity or the inner wall of the drawer;

[0011] A carbon dioxide collection device disposed on the inner wall of the accommodation cavity or the inner wall of the drawer;

[0012] A ripening module disposed on the inner wall of the accommodation cavity or the inner wall of the drawer;

[0013] The ripening module includes:

[0014] A housing whose interior is provided with a catalytic cavity, and the outer wall of the housing is provided with a water inlet and a carbon dioxide inlet that communicate with the catalytic cavity. The water inlet communicates with the water box, and the carbon dioxide inlet communicates with the carbon dioxide collection device;

[0015] Inside the catalytic chamber, there is a positive electrode plate and a negative current collector device electrically connected to the control board, and an electrolyte membrane is provided between the positive electrode plate and the negative current collector device.

[0016] A refrigerator, comprising:

[0017] A box body that defines an accommodation cavity;

[0018] A drawer that is slidably disposed in the accommodation cavity;

[0019] A control board disposed on the box body;

[0020] A water box disposed on the inner wall of the accommodation cavity or the inner wall of the drawer;

[0021] A carbon dioxide collection device disposed on the inner wall of the accommodation cavity or the inner wall of the drawer;

[0022] A ripening module disposed on the inner wall of the accommodation cavity or the inner wall of the drawer;

[0023] The ripening module includes:

[0024] A housing, inside which there is a catalytic chamber, and on the outer wall of the housing, there are a water inlet and a carbon dioxide inlet communicating with the catalytic chamber. The water inlet communicates with the water box, and the carbon dioxide inlet communicates with the carbon dioxide collection device;

[0025] Inside the catalytic chamber, there are a positive electrode plate and a negative current collector device, and the positive electrode plate and the negative current collector device catalyze the production of ethylene from the carbon dioxide collected by the carbon dioxide collection device and the water provided by the water box.

[0026] In some embodiments of the present application, the negative current collector device includes a diffusion layer. On the diffusion layer, there is a first connection ear electrically connected to the control board. On the side of the diffusion layer opposite to the positive electrode plate, there is a catalytic layer, and on the other side of the diffusion layer, there is a diffusion substrate made of a hydrophobic material.

[0027] In some embodiments of the present application, the catalytic layer includes a layer body, and a catalyst is coated on the layer body. The catalyst is a metal oxide or alloy compound composed of copper and any one or two of gold, silver, bismuth, nickel, and palladium, and the thickness of the catalyst is 0.5 - 5 mg / cm calculated by the mass of copper atoms 2 。

[0028] Among them, the copper is nano - copper, and the diameter of its particles is 10 - 100 nm.

[0029] In some embodiments of the present application, the positive electrode plate includes a plate body, and a second connection ear electrically connected to the control board is provided at the upper end of the plate body, and a catalyst is coated on the plate body.

[0030] In some embodiments of the present application, heating coils are provided on one side of the positive electrode plate away from the negative current collector device and on one side of the negative current collector device away from the positive electrode plate.

[0031] In some embodiments of the present application, the housing is formed by splicing a first outer shell and a second outer shell, and the first outer shell is arranged close to the negative current collector device. The carbon dioxide inlet is arranged on the first outer shell corresponding to the negative current collector device, and a gas diffusion passage communicating with the catalytic chamber and the accommodation chamber is provided on the first outer shell;

[0032] The water inlet is arranged on the second outer shell, and an oxygen outlet corresponding to the positive electrode plate is provided on the second housing.

[0033] In some embodiments of the present application, the carbon dioxide collection device includes a filtration box and a gas pump electrically connected to the control board. An air inlet and an air outlet are provided on the filtration box, a carbon dioxide enrichment membrane is provided inside the filtration box, the air outlet is communicated with the gas pump, and the air outlet of the gas pump is communicated with the carbon dioxide inlet.

[0034] In some embodiments of the present application, clamping grooves are provided on the inner wall of the accommodation chamber or the drawer, and two clamping buttons are movably provided on the housing relatively. A spring is provided between the two clamping buttons;

[0035] One end of the clamping button is a clamping portion, and the other end of the clamping button is a pressing portion, and the clamping portion is detachably clamped in the clamping groove.

[0036] In some embodiments of the present application, a temperature sensor, a humidity sensor, a carbon dioxide sensor, an ethylene concentration sensor and a sterilization module are provided on the inner wall of the accommodation chamber or the inner wall of the drawer, and the temperature sensor, the humidity sensor, the carbon dioxide sensor and the ethylene concentration sensor are all electrically connected to the control board.

[0037] A refrigerator according to an embodiment of the present invention, compared with the prior art, has the beneficial effects that: by arranging a water box, a carbon dioxide collection device and a ripening module on the inner wall of the accommodation cavity or the drawer, and arranging a catalytic cavity inside the housing of the ripening module, an inlet for water and an inlet for carbon dioxide communicating with the catalytic cavity are arranged on the outer wall of the housing, the inlet for water is communicated with the water box, the inlet for carbon dioxide is communicated with the carbon dioxide collection device, and at the same time, a positive electrode plate and a negative current collector device electrically connected to the control board are arranged inside the catalytic cavity, and the positive electrode plate and the negative current collector device catalyze carbon dioxide collected by the carbon dioxide collection device and water provided by the water box to produce ethylene, thereby realizing the electrocatalytic reduction of carbon dioxide to prepare ethylene, realizing the use of exogenous ethylene for ripening, and ensuring the ripening efficiency. Description of the Drawings

[0038] Figure 1 It is a schematic structural diagram of the refrigerator of the present invention.

[0039] Figure 2 It is a schematic structural diagram of the ripening module of the refrigerator of the present invention arranged in the drawer.

[0040] Figure 3 It is an axonometric view of the ripening module of the refrigerator of the present invention.

[0041] Figure 4 It is an exploded view of the ripening module of the refrigerator of the present invention.

[0042] Figure 5 It is a schematic structural diagram of the negative current collector device of the ripening module of the refrigerator of the present invention.

[0043] Figure 6 It is a schematic structural diagram of the first housing of the ripening module of the refrigerator of the present invention.

[0044] Figure 7 It is a schematic structural diagram of the second housing of the ripening module of the refrigerator of the present invention.

[0045] Figure 8 It is a schematic structural diagram of the carbon dioxide collection device of the refrigerator of the present invention.

[0046] Figure 9 It is a schematic connection diagram of the ripening module of the refrigerator of the present invention and the inner wall.

[0047] Figure 10 It is a schematic control diagram of the refrigerator of the present invention.

[0048] Wherein: 1 - box body, 2 - drawer, 3 - control panel, 4 - water box, 5 - carbon dioxide collection device, 51 - filter box, 52 - air pump, 53 - intake pipe, 54 - carbon dioxide enrichment membrane, 6 - ripening module, 61 - housing, 611 - first outer shell, 612 - second outer shell, 613 - gas diffusion path, 62 - water inlet, 63 - carbon dioxide inlet, 64 - positive plate, 641 - second connecting ear, 65 - negative current collector device, 651 - diffusion layer, 652 - first connecting ear, 653 - catalytic layer, 654 - diffusion substrate, 66 - electrolyte membrane, 67 - heating coil, 7 - card slot, 8 - buckle, 81 - clamping part, 82 - pressing part, 9 - spring, a - antibacterial module. Detailed implementation manners

[0049] The following combines the accompanying drawings and embodiments to further describe in detail the specific implementation manners of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0050] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 construed as a limitation to the present application.

[0051] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] Such as Figure 1-4As shown in the figure, a refrigerator according to an embodiment of the present invention includes a box body 1, a drawer 2, a control board 3, a water box 4, a carbon dioxide collection device 5, and a ripening module 6. The box body 1 defines a receiving cavity; the drawer 2 is slidably disposed in the receiving cavity; a box door is provided on the box body 1, and the box door can open or close the receiving cavity. The control board 3 is disposed on the box body 1 for supplying power and controlling the operation of the refrigerator, and the control board 3 can be the existing control board on the refrigerator. The water box 4, the carbon dioxide collection device 5, and the ripening module 6 are all disposed on the inner wall of the receiving cavity or the inner wall of the drawer 2.

[0054] The box bodies of existing refrigerators all have a freezer compartment and a refrigerating compartment, and some refrigerators themselves have drawers. If there are drawers, the existing drawer 2 of the refrigerator can be directly used, or a drawer 2 can be additionally provided for ripening use. For the case of using the existing drawer 2, preferably, the drawer 2 in the refrigerating compartment is used as the ripening drawer. In addition, there are some refrigerators that have a variable-temperature compartment in addition to the freezer compartment and the refrigerating compartment. The variable-temperature compartment is generally arranged between the freezer compartment and the refrigerating compartment, and a drawer is provided in the variable-temperature compartment. Such a refrigerator can use the drawer 2 in the variable-temperature compartment as the ripening drawer, or can use the drawer 2 in the refrigerating compartment as the ripening drawer. For a refrigerator without a drawer, a corresponding ripening space can be set in the refrigerating compartment as the receiving cavity, and a ripening drawer is arranged in the receiving cavity. When ripening is needed, it is used as a ripening space, and when ripening is not needed, it is normally used as a refrigerating compartment.

[0055] In this embodiment, the ripening module 6 includes a housing 61. A catalytic cavity is provided inside the housing 61. An inlet 62 for water and a carbon dioxide inlet 63 communicating with the catalytic cavity are provided on the outer wall of the housing 61. The inlet 62 for water communicates with the water box 4, and the carbon dioxide inlet 63 communicates with the carbon dioxide collection device 5; a positive electrode plate 64 and a negative current collector device 65 electrically connected to the control board 3 are provided inside the catalytic cavity. An electrolyte membrane 66 is provided between the positive electrode plate 64 and the negative current collector device 65.

[0056] For a refrigerator based on the above features, by arranging a water box 4, a carbon dioxide collection device 5 and a ripening module 6 on the inner wall of the accommodation cavity or the drawer 2, and arranging a catalytic cavity inside the housing 61 of the ripening module 6, an inlet 62 and a carbon dioxide inlet 63 communicating with the catalytic cavity are arranged on the outer wall of the housing 61. The inlet 62 is connected to the water box 4 through a water pipe, and the carbon dioxide inlet 63 is connected to the carbon dioxide collection device 5. At the same time, a positive electrode plate 64 and a negative current collector device 65 electrically connected to the control board 3 are arranged inside the catalytic cavity. The positive electrode plate 64 and the negative current collector device 65 catalyze the production of ethylene from the carbon dioxide collected by the carbon dioxide collection device 5 and the water provided by the water box 4, thereby realizing the electrocatalytic reduction of carbon dioxide to prepare ethylene, realizing the use of exogenous ethylene for ripening, and ensuring the ripening efficiency.

[0057] In the present invention, the ripening module 6 uses electrocatalytic reduction of carbon dioxide to produce ethylene to provide an exogenous ripening agent for fruits, and uses the carbon dioxide collection device 5 to collect carbon dioxide in the ripening drawer to reduce the inhibition of respiration by carbon dioxide. The catalytic reaction is carried out in the catalytic cavity. The main reaction formula of the ripening module 6 is as follows:

[0058] Negative electrode reaction: 2CO 2(g) +8H 2 O (l) +12e - →C 2 H 4(g) +12OH - ; mainly for the reduction of carbon dioxide to produce ethylene, and the OH - generated in the reaction is oxidized through the electrolytic membrane;

[0059] Positive electrode reaction: 12OH - →3O 2(g) +6H 2 O (l) +12e - ; the positive electrode reaction is mainly an alkaline water oxidation process.

[0060] Compared with existing ripening refrigerators, for example, Patent CN202211295671.6 discloses a ripening refrigerator that uses heated carbon dioxide for ripening. This method not only has a low ripening efficiency due to the lack of exogenous ripening agents, but also the high carbon dioxide concentration will affect the saccharification process of fruits under the action of oxygen, thereby affecting the taste. Patent CN219014718U discloses a physical vibration ripening method, which has the advantages of being healthy and environmentally friendly. However, due to the use of vibration, there are risks of collision damage and low-stress fatigue damage to fruits and vegetables. Patent CN 113854602 B also discloses a ripening refrigerator that provides ethylene gas by connecting an external ethylene tank. Although it can achieve a good ripening effect, due to the external connection of ethylene, there is not only a risk of ethylene leakage, but also the storage tank needs to be replaced regularly, which is troublesome to operate and not convenient for daily household use. The present invention uses an electrocatalytic carbon dioxide to ethylene module to provide exogenous ethylene for catalyzing fruits and vegetables, which can reduce the carbon dioxide concentration and increase the oxygen concentration while achieving the rapid ripening function, effectively improving the ripening uniformity and reducing the probability of inconsistent saccharification of ripened fruits.

[0061] As can be seen from the above, the OH generated in the negative electrode reaction - needs to pass through the electrolyte membrane 66 and be oxidized to form water. Therefore, the electrolyte membrane 66 needs to be an ion exchange membrane, and its two sides are respectively opposite to the positive electrode plate 64 and the negative electrode current collector device 65.

[0062] Please refer to the attached Figure 3-5 , in this embodiment, the negative electrode current collector device 65 includes a diffusion layer 651, and the diffusion layer 651 is nitrogen and sulfur-doped carbon fiber, which is beneficial to improving the overall conductivity, thereby reducing the resistance and increasing the mass transfer driving force. Secondly, the voids generated by the carbon fiber filling are beneficial to the circulation of carbon dioxide gas, improving the reaction efficiency, and at the same time ensuring that the ethylene produced by the reaction can pass through normally and be input into the drawer 2. A first connection ear 652 electrically connected to the control board 3 is provided on the diffusion layer 651, and a wiring hole is provided on the first connection ear 652. After installation, the wiring hole is exposed outside the housing 61 for convenient wiring. A catalytic layer 653 is provided on the side of the diffusion layer 651 opposite to the positive electrode plate 64, and a diffusion base 654 made of a hydrophobic material is provided on the other side of the diffusion layer 651. The diffusion base 654 uses hydrophobic carbon paper or carbon cloth, which can ensure the passage of the produced ethylene, and at the same time prevent the water added to the ripening module 6 from passing through the diffusion base 654 and being discharged together with the produced ethylene, affecting the quality of the fruits.

[0063] In this embodiment, the catalytic layer 653 includes a layer body, and a catalyst is coated on the layer body. The catalyst is a metal compound or an alloy compound composed of copper and any one or two of gold, silver, bismuth, nickel, and palladium. And through experimental verification, when the thickness of the catalyst is 0.5 - 5 mg / cm calculated by the mass of copper atoms 2 it has the best catalytic effect. The above catalyst is mainly copper, supplemented by gold, silver, bismuth, nickel, and palladium. At the same time, the copper is nano-copper, and the diameter of its particles is 10 - 100 nm, such as 20 nm, 30 nm, 50 nm, 60 nm, 80 nm, etc., which can ensure a good catalytic effect.

[0064] In this embodiment, the positive electrode plate 64 includes a plate body. A second connection ear 641 electrically connected to the control board 3 is provided at the upper end of the plate body. A wiring hole is also provided on the second connection ear 641. After installation, the wiring hole 641 is exposed outside the housing 61 for convenient wiring. A catalyst is coated on the plate body. The catalyst can be any existing catalyst that can achieve the corresponding catalytic effect, as long as it ensures a good catalytic effect. For example, it can adopt the same catalyst as the negative electrode current collector device 65, that is, mainly nano-copper and containing a metal compound or an alloy compound composed of any one or two of gold, silver, bismuth, nickel, and palladium.

[0065] In addition, to improve the catalytic efficiency, heating coils 69 are provided on the side of the positive electrode plate 64 away from the negative electrode current collector device 65 and on the side of the negative electrode current collector device 65 away from the positive electrode plate 64. The heating coils 69 are electrically connected to the control board.

[0066] Please refer to the attached Figure 4-7 , in this embodiment, the housing 61 is formed by splicing a first outer shell 611 and a second outer shell 612. Connection holes can be provided on the first outer shell 611 and the second outer shell 612, and the connection holes are connected by bolts. At the same time, a sealing ring is provided at the connection between the first outer shell 611 and the second outer shell 612 to ensure the sealing effect. When setting, the first outer shell 611 is arranged close to the negative electrode current collector device 65, the carbon dioxide inlet 63 is arranged on the first outer shell 611 corresponding to the negative electrode current collector device 65. At the same time, a gas diffusion passage 613 communicating the catalytic chamber and the accommodation chamber is provided on the first outer shell 611, for ethylene to be discharged from the ripening module 6 into the drawer 2 to ripen the fruits.

[0067] Specifically, the carbon dioxide inlet 63 is provided at the lower end of the first outer shell 611. The ethylene discharge port is communicated with the gas diffusion passage 613, which is provided at the upper end of the first outer shell 611 and is communicated with the gas diffusion passage 613. The outer wall of the negative current collector device 65 can be sealed with the inner wall of the accommodation chamber, so that the negative current collector device divides the accommodation chamber into an intake chamber and an exhaust chamber. The exhaust chamber is the part close to the gas diffusion passage 613, and the intake chamber is the cavity between the gas diffusion passage 613 and the electrolyte membrane 66. The carbon dioxide inlet is provided at a position in the intake chamber. After ethylene is catalytically generated, it is discharged through the exhaust chamber. Since the diffusion substrate 654 is made of hydrophobic carbon paper or carbon cloth, the ethylene generated in the catalytic chamber flows from the diffusion substrate 654 to the exhaust chamber and is finally discharged from the ethylene discharge port, while water will not enter the exhaust chamber and will not be discharged together with ethylene.

[0068] It should be noted that in the above process, most of the carbon dioxide delivered to the ripening module 6 reacts to generate ethylene, and a small amount of unreacted carbon dioxide can be discharged from the ethylene discharge port and enter the drawer 2. The small amount of carbon dioxide can play a role in preservation and will not affect the ripening effect.

[0069] In this embodiment, the water inlet 62 is provided on the second outer shell 612, and an oxygen outlet is provided on the second outer shell 612 corresponding to the positive electrode plate 64. The generated oxygen flows out from the oxygen outlet. Specifically, the oxygen outlet is provided at the upper end of the second outer shell 612, and the water inlet 62 is provided at the lower end of the second outer shell 612. The oxygen generated during the ripening process can be introduced into the fruit and vegetable preservation drawer to achieve high-oxygen preservation, or introduced into the ripening drawer to ensure that the oxygen content during the ripening process can achieve effective saccharification of the fruits. Since too high a carbon dioxide concentration will inhibit the respiration of fruits and vegetables, and at the same time, too high a carbon dioxide concentration and too low an oxygen concentration will affect the saccharification effect of fruits, resulting in uneven ripening. Therefore, an oxygen sensor can be provided in the ripening drawer to detect the oxygen content in the drawer 2 in real time, and the control board 3 determines the flow direction of oxygen according to the oxygen content.

[0070] Please refer to the appendix Figure 8, in this embodiment, the carbon dioxide collection device 5 includes a filter box 51 and an air pump 52 electrically connected to the control board 3. The air pump 52 is a micro air pump. The filter box 51 is provided with an air inlet and an air outlet. An air inlet pipe 53 is provided at the air inlet. A carbon dioxide enrichment membrane 54 is provided inside the filter box 51. The air outlet is communicated with the air pump 52, and the air outlet of the air pump 52 is communicated with the carbon dioxide inlet 63. The collection process is that under the pressure drive of the air pump 52, the air in the fruit and vegetable drawer is sucked into the air inlet pipe 53, carbon dioxide is collected through the carbon dioxide enrichment membrane 54 in the filter box 51, and finally flows to the catalytic module 6.

[0071] Please refer to the appendix Figure 9 , in this embodiment, a clamping groove 7 is provided on the inner wall of the accommodation cavity or the drawer 2. The clamping groove 7 includes an installation part and a fixing part. The fixing part is arranged at both ends of the installation part. The width of the installation part is greater than that of the fixing part, so that the cross section of the clamping groove 7 is convex. Two clamping buckles 8 are movably provided on the housing 61 relatively. A spring 9 is provided between the two clamping buckles 8. The spring 9 can also be replaced by other elastic parts. One end of the clamping buckle 8 is a clamping part, and the other end of the clamping buckle 8 is a pressing part. The clamping part is detachably clamped in the clamping groove 7.

[0072] When the catalytic module 6 needs to be connected, first press the two pressing parts to make the two clamping buckles 8 move relatively, then put the clamping parts of the two clamping buckles 8 into the installation part of the clamping groove 7, and then release the two clamping buckles 8. Under the action of the spring 9, the two clamping buckles 8 move away from each other, so that the clamping part is clamped with the fixing part of the clamping groove 7, realizing the installation of the ripening module 6. When the ripening module 6 needs to be disassembled, first press the two pressing parts to make the two clamping buckles 8 move towards each other. When the clamping part disengages from the fixing part, move the clamping buckles 8 out of the clamping groove 7, thereby realizing the detachable connection of the ripening module 6.

[0073] In this embodiment, since the ripening module 6 needs to be electrically connected to the control board 3 and there are conductive wires, to avoid damaging the conductive wires during the pushing and pulling of the drawer 2, the ripening module 6 is preferably arranged at the top of the accommodation cavity. Since the heights of the front side and the left and right sides of the drawer are all smaller than the height of the accommodation cavity, the ripening module 6 will not be touched during the pushing and pulling of the drawer 2. At the same time, it can also prevent the ripening module 6 arranged on the drawer 2 from affecting the conductive wires during the pushing and pulling process. In addition, since the drawer 2 has a depth, by arranging the ripening module 6 on the top wall of the accommodation cavity, even if the gap between the top end faces of the front side and the left and right sides of the drawer 2 and the top wall of the accommodation cavity is smaller than the thickness of the ripening module 6, as long as it is ensured that the ripening module 6 is located within the depth space of the drawer 2, as long as the drawer 2 is not completely removed from the accommodation cavity but only pushed and pulled, there will be no interference between the ripening module 6 and the drawer 2 during the pushing and pulling process of the drawer 2. When the drawer 2 needs to be completely removed, the ripening module 6 can be disassembled first and then the drawer 2 can be removed.

[0074] The water box 4 is not powered on, but it needs to be connected to the ripening module 6 by a rubber tube. If the water box 4 is arranged on the inner wall of the drawer 2, the rubber tube may fall off from the water box 4 during the pushing and pulling of the drawer 2, affecting the subsequent production of ethylene; there may also be a situation where the water in the water box 4 overflows during the pushing and pulling process, damaging the fruits. At the same time, since there are gaps between the two sides of the drawer 2 and the two sides of the accommodation cavity, and there is also a gap between the front end of the drawer 2 and the front end face of the accommodation cavity, preferably, the water box 4 is arranged in the corresponding gap and on the inner wall of the accommodation cavity. Of course, the water box 4 can also directly use the water receiving box in the refrigerator.

[0075] In addition, a cover can be arranged on the water box 4 to prevent water evaporation or overflow. Through holes are arranged on the cover or the water box 4, and the rubber tube enters the water box 4 through the through holes. At the same time, a liquid level sensor is arranged in the water box 4, and the liquid level sensor is electrically connected to the control board 3, which can monitor the liquid level in the water box 4 in real time to avoid the inability to produce ethylene due to lack of water. Of course, the water box 4 can also be made of a transparent material, and when the refrigerator is opened, it is possible to directly judge whether there is water shortage in the water box 4 with the naked eye. A water filling port can also be arranged on the water box 4, and when there is a water shortage, water can be directly added to the water filling port. For example, directly connect a long-spout kettle to the water filling port, or connect a conduit to the water filling port to add water.

[0076] The carbon dioxide collection device 5 is preferably arranged in the drawer 2 for convenient carbon dioxide collection. However, it can also be arranged at the upper end of the accommodation cavity, and then its air inlet pipe 53 is placed in the drawer 2. An air inlet device can be arranged at the air inlet end of the air inlet pipe 53. The air inlet device is funnel-shaped, and the end of the air inlet device away from the air inlet pipe 53 is larger, which is convenient for collecting carbon dioxide.

[0077] In this embodiment, a temperature sensor, a humidity sensor, a carbon dioxide sensor, an ethylene concentration sensor and a sterilization module are arranged on the inner wall of the accommodation cavity or the inner wall of the drawer 2. The temperature sensor, the humidity sensor, the carbon dioxide sensor and the ethylene concentration sensor are all electrically connected to the control board 3. At the same time, two gears of preservation and ripening are set in the drawer 2, and the specific work is as follows.

[0078] Please refer to the appendix Figure 10 , The ripening process is as follows: When the user adjusts to the ripening mode, the temperature sensor, the humidity sensor and the ethylene sensor are activated. Read the relevant data in the drawer 2. When it is detected that the temperature in the drawer 2 is adjusted to 20 - 22 °C and the humidity is adjusted to 80 - 90%, the ripening module 6 is turned on, collect the carbon dioxide in the drawer 2, and at the same time catalyze and release ethylene and oxygen. The concentration of ethylene can be set according to the relevant fruit types, but 20 ppm / min can be preferably used. After working, the ethylene sensor continuously monitors. When the ethylene sensor detects that the ethylene concentration reaches 100 ppm, the control board 3 turns off the ripening module 6. At this time, the inside of the drawer 2 is in an oxygen-rich state, which is beneficial to fruit saccharification and achieves a better fruit ripening effect.

[0079] In this embodiment, when ripening work needs to be carried out, the ethylene concentration sensor in the drawer 2 continuously monitors the concentration of ethylene, and the ripening module 6 is restarted once every certain period of time. The interval time can be 6 - 10 hours, preferably 8 hours. If there is no fruit to be ripened in the drawer and ethylene does not need to be produced, the user can turn off the ripening mode, and then the ethylene concentration sensor does not work.

[0080] In this embodiment, the antibacterial module a does not need to be powered on, so it is preferably arranged on the inner wall of the drawer 2. It can inhibit the activities of bacteria such as Bacillus subtilis and Bacillus cereus that cause fruit and vegetable spoilage, reduce food spoilage during the ripening process, and ensure the quality of fruits and vegetables. The antibacterial module a can be any existing antibacterial module for refrigerators, but preferably an antibacterial module a formed by loading antibacterial agents on the surface of activated carbon, molecular sieve or silica gel. The antibacterial agents are mainly noble metal ions (one or two of silver ions and zinc ions) compounded with plant essential oils, including garlic essential oil, tea polyphenols, mustard essential oil, etc.

[0081] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A refrigerator, characterized in that: include: A box body, wherein the box body defines a receiving cavity; A drawer, the drawer being arranged in the accommodating cavity in a push-pull manner; A control panel, arranged on the box body; A water box, arranged on the inner wall of the accommodating cavity or the inner wall of the drawer; A carbon dioxide collection device, arranged on the inner wall of the accommodating cavity or the inner wall of the drawer; A ripening module, arranged on the inner wall of the accommodating cavity or the inner wall of the drawer; The ripening module comprises: A shell, wherein a catalytic chamber is provided inside the shell, and a water inlet and a carbon dioxide inlet are provided on an outer wall of the shell, the water inlet is connected to the water box, and the carbon dioxide inlet is connected to the carbon dioxide collecting device; A positive electrode plate and a negative electrode current collecting device electrically connected to the control board are arranged inside the catalytic chamber, and an electrolyte membrane is arranged between the positive electrode plate and the negative electrode current collecting device.

2. A refrigerator, characterized in that: include: A box body, wherein the box body defines a receiving cavity; A drawer, the drawer being arranged in the accommodating cavity in a push-pull manner; A control panel, arranged on the box body; A water box, arranged on the inner wall of the accommodating cavity or the inner wall of the drawer; A carbon dioxide collection device, arranged on the inner wall of the accommodating cavity or the inner wall of the drawer; A ripening module, arranged on the inner wall of the accommodating cavity or the inner wall of the drawer; The ripening module comprises: A shell, wherein a catalytic chamber is provided inside the shell, and a water inlet and a carbon dioxide inlet are provided on an outer wall of the shell, the water inlet is connected to the water box, and the carbon dioxide inlet is connected to the carbon dioxide collecting device; A positive electrode plate and a negative electrode current collecting device are arranged inside the catalytic chamber. The positive electrode plate and the negative electrode current collecting device catalyze the carbon dioxide collected by the carbon dioxide collecting device and the water provided by the water box to produce ethylene.

3. The refrigerator according to claim 1 or 2, characterized in that: The negative electrode current collecting device comprises a diffusion layer, on which a first connecting ear electrically connected to the control board is provided, a catalytic layer is provided on one side of the diffusion layer opposite to the positive electrode plate, and a diffusion substrate made of a hydrophobic material is provided on the other side of the diffusion layer.

4. The refrigerator according to claim 3, characterized in that: The catalytic layer comprises a layer body, on which a catalyst is coated, wherein the catalyst is a metal oxide or alloy compound composed of any one or two of copper, gold, silver, bismuth, nickel, and palladium, and the thickness of the catalyst is 0.5-5 mg / cm2 calculated based on the mass of copper atoms. 2 . The copper is nano copper, and the diameter of its particles is 10-100nm.

5. The refrigerator according to claim 1 or 2, characterized in that: The positive electrode plate comprises a plate body, the upper end of the plate body is provided with a second connecting ear electrically connected to the control board, and the plate body is coated with a catalyst.

6. The refrigerator according to claim 1 or 2, characterized in that: A heating ring is provided on one side of the positive electrode plate away from the negative electrode current collecting device and on one side of the negative electrode current collecting device away from the positive electrode plate.

7. The refrigerator according to claim 1 or 2, characterized in that: The shell is formed by splicing a first shell and a second shell, and the first shell is arranged close to the negative electrode current collecting device, the carbon dioxide inlet is arranged on the first shell corresponding to the negative electrode current collecting device, and the first shell is provided with a gas diffusion passage connected with the catalytic chamber and the accommodating chamber; The water inlet is arranged on the second shell, and the second shell is provided with an oxygen outlet corresponding to the positive electrode plate.

8. The refrigerator according to claim 1 or 2, characterized in that: The carbon dioxide collection device includes a filter box and an air pump electrically connected to the control panel, the filter box is provided with an air inlet and an air outlet, a carbon dioxide enrichment membrane is provided inside the filter box, the air outlet is connected to the air pump, and the air outlet of the air pump is connected to the carbon dioxide inlet.

9. The refrigerator according to claim 1 or 2, characterized in that: The inner wall of the accommodating cavity or the drawer is provided with a card slot, and the shell is provided with two buckles that can move relatively, and a spring is provided between the two buckles; One end of the buckle is a clamping portion, and the other end of the buckle is a pressing portion. The clamping portion is detachably clamped in the clamping slot.

10. The refrigerator according to claim 8, characterized in that The inner wall of the accommodating cavity or the inner wall of the drawer is provided with a temperature sensor, a humidity sensor, a carbon dioxide sensor, an ethylene concentration sensor and a sterilization module, and the temperature sensor, the humidity sensor, the carbon dioxide sensor and the ethylene concentration sensor are all electrically connected to the control board.

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