Air conditioning device and refrigerating and freezing device

Abstract

The application provides a modified atmosphere packaging device and a refrigeration and freezing device, wherein the modified atmosphere packaging device comprises a main body assembly and a liquid level detection assembly. The main body assembly comprises a bin body and at least one electrolytic assembly connected to the bin body, a working space for accommodating electrolyte is formed in the bin body or surrounded by the bin body and the electrolytic assembly, and the electrolytic assembly is configured to consume oxygen in a storage space outside the bin body through an electrochemical reaction of the electrolyte. The liquid level detection assembly is arranged one by one with the electrolytic assembly or is arranged corresponding to at least two electrolytic assemblies, and is configured to detect the liquid level of the electrolyte in the working space. The application provides a modified atmosphere packaging device and a refrigeration and freezing device, which can solve the problem that the modified atmosphere packaging device cannot work normally due to too little electrolyte, and improve the user experience.

Description

Technical Field

[0001] This invention relates to the field of preservation equipment technology, and in particular to a controlled atmosphere device and a refrigeration and freezing device. Background Technology

[0002] The controlled atmosphere (CA) system in a refrigerator uses an electrochemical reaction to consume oxygen in the storage space, thereby reducing the oxygen concentration and achieving oxygen-controlled preservation. This electrochemical reaction requires cathode and anode plates in an electrolyte solution. A reduction reaction occurs at the cathode, absorbing oxygen, while an oxidation reaction occurs at the anode, producing oxygen. The generated oxygen forms numerous tiny bubbles in the electrolyte. These bubbles rise to the surface and burst, forming very small electrolyte particles that remain suspended above the electrolyte. The continuously generated oxygen carries away some of these electrolyte particles, which are then discharged through the CA system's vent. As the electrolyte level decreases with use, the cathode and anode plates may become exposed, affecting the CA system's efficiency. When the electrolyte level drops to a certain point, the electrochemical reaction may cease altogether, reducing the oxygen removal and preservation effect, shortening the food's shelf life, and resulting in a poor user experience. Summary of the Invention

[0003] In view of the above problems, the present invention is proposed to provide a controlled atmosphere device and refrigerator that overcomes or at least partially solves the above problems, aiming to solve the problem of malfunction caused by insufficient electrolyte in existing devices, thereby improving the user experience.

[0004] Specifically, the present invention provides a controlled atmosphere device, comprising:

[0005] The main component includes a chamber and at least one electrolysis component connected thereto. The chamber forms or the chamber and the electrolysis component enclose a working space for holding electrolyte. The electrolysis component is configured to consume oxygen in the storage space outside the chamber by performing an electrochemical reaction through the electrolyte.

[0006] A liquid level detection component is provided, which is configured to detect the liquid level height of the electrolyte in the working space, either in a one-to-one correspondence with the electrolysis components or in a correspondence with at least two of the electrolysis components.

[0007] In the controlled atmosphere device of the present invention, the liquid level detection component can detect the liquid level of the electrolyte in the working space. When the liquid level is low, the electrolyte can be replenished manually or automatically to prevent the electrolyte from being too low and the electrolyte component from being exposed, which would cause the controlled atmosphere device to malfunction and thus improve the user experience.

[0008] Optionally, the liquid level detection component includes at least one non-contact first liquid level switch.

[0009] The first liquid level switch has one and is disposed in a groove formed by a recess outside the tank body or inside the tank wall, wherein the groove cavity and the working space are spaced apart; or

[0010] There are two or more first level switches, wherein at least one is disposed outside the tank body and / or at least one is disposed inside the groove.

[0011] Optionally, the liquid level detection assembly includes at least one contact-type second liquid level switch, and at least the detection part of the second liquid level switch extends into the working space.

[0012] Optionally, the electrolysis assembly is immersed in the electrolyte, and a buffer space is provided between the top of the electrolysis assembly and the top of the working space, with the liquid level detection assembly located within the buffer space.

[0013] Optionally, the liquid level detection assembly includes at least two liquid level switches, at least one of the liquid level switches being a contact liquid level switch and / or at least one of the liquid level switches being a non-contact liquid level switch, and one portion of the liquid level switches being positioned above the other portion of the liquid level switches.

[0014] Optionally, the controlled atmosphere device further includes:

[0015] A controlled atmosphere control module, which is connected to the liquid level detection component and the electrolysis component, and configured to:

[0016] In response to whether the liquid level height is not higher than a first liquid level threshold, a first response signal output by the liquid level detection component is acquired; and

[0017] If the duration of not receiving the first response signal is not less than a first time threshold and the working load of the electrolysis component is not less than a load threshold, then a fault signal of the liquid level detection component is generated.

[0018] Optionally, the working space is connected to a replenishment port, the replenishment port being configured to allow at least the electrolyte outside the working space to be injected into the working space; and

[0019] The controlled atmosphere device further includes:

[0020] A controlled atmosphere control module, which is connected to the liquid level detection component and the electrolysis component, and configured to:

[0021] In response to whether the liquid level height is not higher than a first liquid level threshold, a replenishment signal is generated to inject the electrolyte into the workspace;

[0022] In response to the fact that the number of times the replenishment signal is generated within a set time is not less than a response threshold and the working load of the electrolysis component is not higher than a load threshold, a fault signal corresponding to at least the electrolyte leakage is generated; or, in response to the fact that the number of times the replenishment signal is generated within a set time is not less than a response threshold and the working load of the electrolysis component is not lower than a load threshold, a fault signal of the liquid level detection component is generated.

[0023] Optionally, the working space is connected to a replenishment port, the replenishment port being configured to allow a replenishment pump to inject the electrolyte into the working space, wherein the replenishment pump is configured to stop in response to a discharge pressure not falling below a discharge threshold; and

[0024] The controlled atmosphere device further includes:

[0025] A controlled atmosphere control module, which is connected to the liquid level detection component and the electrolysis component, and configured to:

[0026] In response to whether the liquid level is not higher than a first liquid level threshold, a start signal for the replenishment pump is generated;

[0027] If, within a set time after the power-on signal is generated, the working load of the electrolysis component does not exceed the load threshold, a fault signal indicating blockage in the pipeline between the replenishment pump and the replenishment port is generated.

[0028] Optionally, the top of the workspace forms at least one liquid inlet and at least one vent outlet; and

[0029] The controlled atmosphere device further includes:

[0030] The spill prevention mechanism is configured to:

[0031] In response to the liquid level height not being lower than the second liquid level threshold, the liquid replenishment port is closed.

[0032] Optionally, the anti-overflow mechanism includes a float disposed within the working space and floating on the surface of the electrolyte. The top of the float forms at least one closed portion disposed opposite to the replenishment port and / or is connected to at least one sealing device disposed opposite to the replenishment port.

[0033] Optionally, the anti-overflow mechanism further includes a guide component, which is disposed within the working space and reciprocally guided to the float. An upper stop structure and / or a lower stop structure are formed on the guide component, wherein the upper stop structure is configured to stop the float at its highest rising position, and the lower stop structure is configured to stop the float at its lowest sinking position.

[0034] Optionally, the spill prevention mechanism further includes a vertically extending guide rod, the upper end of which is located at the top of the workspace, and the lower end of which is provided with a horizontally extending stop; and

[0035] The float has a guide hole that slides back and forth on the guide rod, and the float is stopped between the top of the working space and the stop rod.

[0036] Optionally, the chamber is a plate-frame shape with openings on the front and rear sides or on the top and bottom sides. The electrolysis assembly includes a cathode assembly and an anode assembly connected to the openings on both sides of the chamber, respectively. The working space is at least partially enclosed by the chamber, the cathode assembly, and the anode assembly; or

[0037] The chamber is shell-shaped with an opening on the front or bottom. The electrolysis assembly is disposed within the opening and includes a cathode assembly and an anode assembly spaced apart from each other. The working space includes a liquid storage space and a reaction space. The liquid storage space is located between the shell and the electrolysis assembly, and the reaction space is located between the cathode assembly and the anode assembly.

[0038] The present invention also provides a refrigeration and freezing apparatus, comprising:

[0039] A storage compartment, wherein the storage compartment forms a storage space for storing items and a storage opening for retrieving items;

[0040] The controlled atmosphere device described in any of the preceding claims is disposed on the wall of the storage compartment adjacent to the storage opening and / or on the wall of the storage compartment opposite to the storage opening.

[0041] The present invention also provides a refrigeration and freezing apparatus, comprising:

[0042] A storage compartment, wherein the storage compartment forms a storage space for storing items and a storage opening for retrieving items;

[0043] The controlled atmosphere device described in any of the preceding claims is disposed on the wall of the storage compartment adjacent to the storage opening and / or on the wall of the storage compartment opposite to the storage opening.

[0044] The main control module is connected to the liquid level detection component and the electrolysis component of the controlled atmosphere device, and is configured to control the injection of electrolyte into the working space of the controlled atmosphere device according to the liquid level height measured by the liquid level detection component.

[0045] Optionally, the main control module is further configured to:

[0046] In response to whether the liquid level height is not higher than a first liquid level threshold, a first response signal output by the liquid level detection component is acquired; and

[0047] If the duration of not receiving the first response signal is not less than a first time threshold and the working load of the electrolysis component is not less than a load threshold, then a fault signal of the liquid level detection component is generated.

[0048] Optionally, the main control module is further configured to:

[0049] In response to whether the liquid level height is not higher than a first liquid level threshold, a replenishment signal is generated to inject the electrolyte into the workspace;

[0050] In response to the fact that the number of times the replenishment signal is generated within a set time is not less than a response threshold and the working load of the electrolysis component is not higher than a load threshold, a fault signal corresponding to at least the electrolyte leakage is generated; or, in response to the fact that the number of times the replenishment signal is generated within a set time is not less than a response threshold and the working load of the electrolysis component is not lower than a load threshold, a fault signal of the liquid level detection component is generated.

[0051] Optionally, the main control module is further configured to:

[0052] In response to whether the liquid level is not higher than a first liquid level threshold, a start signal for the replenishment pump is generated;

[0053] If, within a set time after the power-on signal is generated, the working load of the electrolysis component does not exceed the load threshold, a fault signal indicating blockage in the pipeline between the replenishment pump and the replenishment port is generated.

[0054] In the refrigeration and freezing apparatus of this invention, a liquid level detection component is added to the controlled atmosphere device. This component can detect the liquid level of the electrolyte in the working space and replenish the electrolyte manually or automatically when the liquid level is low, preventing insufficient electrolyte. Simultaneously, the controlled atmosphere device consumes oxygen in the storage space, creating an oxygen-deficient atmosphere. This reduces the aerobic respiration intensity of fruits, vegetables, and other food items in the storage space, thereby enhancing the preservation function of the storage space and extending the shelf life of the food. Therefore, the refrigeration and freezing apparatus of this invention provides a long food preservation period, and the controlled atmosphere device has high operational reliability, thus improving the user experience.

[0055] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0056] The following sections will describe some specific embodiments of the invention in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0057] Figure 1 This is a schematic structural diagram of a controlled atmosphere device according to an embodiment of the present invention, wherein a liquid level switch is located outside the chamber.

[0058] Figure 2 This is a schematic structural diagram of a controlled atmosphere device according to an embodiment of the present invention, wherein a liquid level switch is located in a groove;

[0059] Figure 3 This is a schematic structural diagram of a controlled atmosphere device according to an embodiment of the present invention, wherein a liquid level switch is located within a buffer space;

[0060] Figure 4 This is a schematic structural diagram of a controlled atmosphere device according to an embodiment of the present invention, wherein two liquid level switches are located outside the chamber.

[0061] Figure 5 This is a schematic structural diagram of a controlled atmosphere device according to an embodiment of the present invention, wherein two liquid level switches are located within a buffer space;

[0062] Figure 6 This is a schematic structural diagram of a controlled atmosphere device according to an embodiment of the present invention, wherein two liquid level switches are located in a groove;

[0063] Figure 7 This is a schematic structural diagram of a controlled atmosphere device connected to a liquid storage space according to an embodiment of the present invention, wherein a liquid level switch is located outside the storage tank.

[0064] Figure 8 This is a schematic structural diagram of a controlled atmosphere device communicating with a liquid storage space according to an embodiment of the present invention, wherein two liquid level switches are located in a groove. Detailed Implementation

[0065] The following reference Figures 1 to 8The modified atmosphere device according to embodiments of the present invention is described below. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0066] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0067] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0068] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0069] Modified atmosphere storage (MAP) technology is a method of preserving food by controlling the proportion of gases within a sealed space. Its basic principle is to create a controlled atmosphere with a composition different from the normal atmosphere within a defined enclosed space. This inhibits the physiological and biochemical processes and microbial activity that lead to food spoilage. For fruits and vegetables, this primarily involves inhibiting aerobic respiration, preventing accelerated spoilage, and thus extending their shelf life. MAP technology is implemented using modified atmosphere storage devices.

[0070] The key to modified atmosphere packaging (MAP) preservation technology lies in gas regulation. To achieve this, electrochemical reactions can be used to consume oxygen within a closed space, or the selective permeability of the modified atmosphere membrane can be utilized. The inventors believe the former has advantages such as high efficiency and low cost; for example, MAP can be applied to refrigeration and freezing systems to preserve food, thus possessing broad development potential. For ease of understanding, the prior art of a modified atmosphere packaging structure based on electrochemical reactions is first described below with examples.

[0071] In some embodiments, the controlled atmosphere device typically includes a cathode plate and an anode plate immersed in an electrolyte. The cathode plate is in communication with a sealed space and is used to absorb oxygen from the sealed space through an electrochemical reaction under the action of an electrolytic voltage, thereby providing reactants to the anode plate. The electrochemical reaction mainly takes place at the cathode and anode plates, where oxygen in the air undergoes a reduction reaction at the cathode plate: O₂ + 2H₂O + 4e⁻. - →4OH - OH generated by the cathode plate - It can be used as a reactant for the anode plate.

[0072] The anode plate is connected to the outside of the controlled atmosphere device, allowing oxygen to be released to the outside of the device via an electrochemical reaction using reactants under the influence of electrolysis voltage. The cathode plate generates OH... - An oxidation reaction can occur at the anode plate, producing oxygen, i.e., 4OH⁻. - →O2 + 2H2O + 4e - .

[0073] Modified atmosphere devices consume oxygen in a sealed space to create an oxygen-deficient atmosphere, which is beneficial for preserving food in the sealed space.

[0074] In some embodiments, the controlled atmosphere device may further include a housing. The housing may generally be in the shape of a flattened cuboid. A lateral opening may be provided on the housing, which may be located on the outside of the housing and communicate with the external environment, for example, with a sealed space for preservation. A cathode plate is disposed at the lateral opening to define, together with the housing, a reservoir for holding electrolyte. An anode plate is disposed within the reservoir and spaced apart from the cathode plate.

[0075] One of the walls of the housing, such as the outer wall, can be opened to form a lateral opening opposite to the external environment. In this embodiment, the cathode plate can be directly used as the outer wall of the housing to seal the liquid storage chamber. The liquid storage chamber of the controlled atmosphere device can contain an alkaline electrolyte, such as 1 mol / L NaOH or KOH, or alternatively Na2CO3 or K2CO3. The concentration of the electrolyte can be adjusted according to actual needs.

[0076] In some embodiments, the controlled atmosphere device further includes a separator disposed within the liquid storage chamber and located between the cathode plate and the anode plate, for separating the cathode plate and the anode plate to prevent short circuits in the controlled atmosphere device after energization. Specifically, a plurality of protrusions are formed on the side of the separator facing the anode plate, the protrusions abutting against the anode plate, and the cathode plate abutting against the side of the separator opposite to the protrusions, so as to form a predetermined gap between the cathode plate and the anode plate, thereby separating the cathode plate and the anode plate.

[0077] In some embodiments, the controlled atmosphere device further includes a fixing component disposed on the outer side of the cathode plate and configured to fix the cathode plate to a lateral opening in the housing. Specifically, the fixing component may further include a metal frame and a support member. The metal frame abuts against the outer side of the cathode plate. The metal frame is in direct contact with the cathode plate, which can serve to press the cathode plate firmly, and the metal frame is also provided with a cathode power supply terminal for connecting to an external power source. An anode power supply terminal may be formed on the anode plate.

[0078] The support member has a slot for insertion. When the upright part of the metal frame is inserted into the slot of the support member, the metal frame can be fixed and positioned by the support member, thereby pressing the metal frame against the cathode plate.

[0079] In some embodiments, the modified atmosphere device further includes a power supply device, such as a battery. The two electrode terminals of the power supply device are electrically connected to the corresponding cathode power supply terminal and anode power supply terminal of the modified atmosphere device, respectively, and provide power for the electrochemical reaction. In this embodiment, the modified atmosphere device, due to the presence of the power supply device, allows the cathode and anode plates of the modified atmosphere device to undergo electrochemical reactions under the action of an electrolytic voltage.

[0080] Of course, a controlled atmosphere device may not include a power supply unit, which is an external power supply device. For example, when the controlled atmosphere device is installed inside a refrigeration and freezing unit and connected to the preservation space inside the refrigeration and freezing unit, the controlled atmosphere device can be electrically connected to the power supply module of the refrigeration and freezing unit to provide it with power. This configuration can reduce the size of the refrigeration and freezing unit, making it more convenient to carry and install.

[0081] This concludes the description of the structure of a modified atmosphere storage device (MAP). As explained above, the cathode and anode plates must be submerged in the electrolyte for the electrochemical reaction to proceed normally. However, in actual operation, the oxygen generated at the anode plate forms numerous tiny bubbles in the electrolyte. These bubbles rise to the surface and burst, creating very small electrolyte particles that remain suspended above the electrolyte. The continuously generated oxygen carries away some of these electrolyte particles, which are then discharged from the MAP's outlet. As the electrolyte level decreases with use, the cathode and anode plates may become exposed, affecting the device's efficiency. When the electrolyte level drops to a certain point, the electrochemical reaction may even cease altogether, reducing the oxygen removal and preservation effect, shortening the food's shelf life, and resulting in a poor user experience.

[0082] In view of the above problems, the inventors have proposed the present invention to provide a modified atmosphere device and refrigerator that overcomes or at least partially solves the above problems, aiming to solve the problem of existing modified atmosphere devices failing to function properly due to insufficient electrolyte, thereby improving the user experience. Specifically, Figure 1 This is a schematic structural diagram of a controlled atmosphere device according to an embodiment of the present invention, wherein a liquid level switch is located outside the chamber, as shown below. Figure 1 As shown, and refer to Figures 2 to 8 This invention provides a controlled atmosphere device 100, including a main component and a liquid level detection component 120. The main component includes a chamber 111 and at least one electrolysis component 112 connected thereto. A working space 113 for holding electrolyte is formed within the chamber 111, or the chamber 111 and the electrolysis component 112 enclose each other. The electrolysis component 112 is configured to consume oxygen in a storage space outside the chamber 111 through an electrochemical reaction with the electrolyte. The storage space can be a storage space within a refrigeration or freezing device, such as a storage space defined by a storage drawer. The liquid level detection component 120 is configured to correspond one-to-one with the electrolysis component 112 or to correspond to at least two electrolysis components 112, and is configured to detect the liquid level of the electrolyte in the working space 113. The liquid level detection component 120 can be non-contact or contact type, without limitation.

[0083] In the modified atmosphere device 100 of this embodiment, the liquid level detection component 120 can detect the liquid level of the electrolyte in the working space 113. When the liquid level is low, the electrolyte can be replenished manually or automatically to prevent the electrolyte from being too low and the electrolyte component from being exposed, which would cause the modified atmosphere device 100 to malfunction and thus improve the user experience.

[0084] In some embodiments of the present invention, the chamber 111 is a plate frame shape with openings on the front and rear sides or on the top and bottom sides, the electrolysis assembly 112 includes a cathode assembly and an anode assembly respectively connected to the openings on both sides of the chamber 111, and the working space 113 is at least partially enclosed by the chamber 111 and the cathode assembly and the anode assembly.

[0085] The anode assembly can be composed of a metal plate or a nickel plate. The anode assembly has multiple gas inlet and outlet holes penetrating it. The cathode assembly includes a catalyst layer, a first waterproof layer, a current collector layer, and a second waterproof layer connected in sequence. The catalyst layer contains catalyst, activated carbon, and PTFE, etc. The first and second waterproof layers contain PTFE and activated carbon, etc. The current collector layer includes electrodes and a nickel mesh, etc.

[0086] Alternatively, in some other embodiments, the chamber 111 is a shell with an opening on the front or bottom, the electrolysis assembly 112 is disposed in the opening and includes a cathode assembly and an anode assembly spaced apart from each other, and the working space 113 includes a liquid storage space 200 and a reaction space, the liquid storage space 200 is located between the shell and the electrolysis assembly 112, and the reaction space is located between the cathode assembly and the anode assembly.

[0087] Taking a shell-shaped chamber 111 with an opening at the bottom as an example, the anode plate assembly is located above the cathode plate assembly, and the anode plate assembly, cathode plate assembly, and chamber 111 define the reaction space. The liquid storage space 200 is located above the anode plate assembly. The liquid storage space 200 is connected to the reaction space, and the electrolyte consumed in the reaction space can be replenished by the liquid storage space 200. To allow the generated oxygen to be discharged, an exhaust channel is also provided at the top of the chamber. During operation, the cathode plate assembly and anode plate assembly are connected to the positive and negative terminals of the power supply device and then operate. They absorb oxygen in the storage space using the electrolyte, and generate oxygen through electrolysis in the electrolyte, which is then discharged sequentially through the exhaust port and the exhaust channel.

[0088] To prevent the oxygen from carrying away some electrolyte particles when it overflows, the controlled atmosphere device also has a liquid-sealed channel for storing liquid. One end of the liquid-sealed channel is connected to the outlet channel, and the other end is connected to the outside of the chamber 111. The oxygen discharged from the outlet channel must pass through the liquid in the liquid-sealed channel, and any electrolyte particles mixed in with the oxygen will be absorbed by the liquid. The liquid-sealed channel is generally bendable. Of course, the liquid-sealed channel can also be a recess for storing liquid, with one end of the outlet channel inserted below the liquid surface of the recess, which can also achieve the recovery of electrolyte particles.

[0089] To replenish the electrolyte in the storage space 200, a water replenishment channel is installed running through the top of the chamber. The lower end of the water replenishment channel extends into the liquid-sealed channel. The liquid-sealed channel can be controlled to open and close via an opening and closing device. When replenishment is not needed, the water replenishment channel is closed, and oxygen can only be discharged from the chamber through the liquid-sealed channel. When replenishment is needed, the water replenishment channel opens, and purified water enters through the water replenishment channel. Most of the water enters the storage space 200, while a small portion enters the liquid-sealed channel, flushing the liquid in the liquid-sealed channel into the storage space 200. This design allows for the recovery of electrolyte particles that enter the liquid-sealed channel. Therefore, only the replenishment of purified water is needed to maintain the electrolyte concentration in the storage space 200, thus reducing costs.

[0090] In some embodiments of the present invention, such as Figure 1 As shown, the liquid level detection assembly 120 includes at least one non-contact first liquid level switch, which is located outside the tank body 111. For example, the first liquid level switch is a capacitive liquid level switch. The first liquid level switch can be attached to the outer wall of the tank body 111, without direct contact with the electrolyte, thus avoiding corrosion from strong alkaline solutions and extending the service life of the first liquid level switch. Figure 2 As shown, the first level switch can also be located inside the tank 111. To prevent corrosion of the first level switch by the strong alkaline solution, a groove 140 is formed in the inner wall of the tank 111. The groove 140 and the working space 113 are spaced apart, and the first level switch is installed inside the groove 140. Figure 3 and Figure 5 As shown, the first liquid level switch can also be located directly inside the tank 111.

[0091] In some other embodiments, such as Figures 4 to 6 As shown, there are two or more first level switches, with at least one located outside the tank body 111 and / or at least one located inside the recess 140. That is, all first level switches can be located outside the tank body 111, all can be located inside the recess 140, or at least one can be located outside the tank body 111 and at least one can be located inside the recess 140, depending on the actual usage. Figure 4 As shown, both first liquid level switches are located outside the tank body 111. Figure 5 As shown, both first liquid level switches are located in the tank 111. Figure 6 As shown, both first liquid level switches are located within the groove 140.

[0092] In some embodiments of the present invention, the liquid level detection assembly 120 includes at least one contact-type second liquid level switch, and at least the detection part of the second liquid level switch extends into the working space 113. For example, the second liquid level switch is a float-type liquid level switch, and the detection part is a float. The float is in contact with the liquid surface of the electrolyte in the working space 113 and moves with the up and down movement of the electrolyte. When it rises or falls to a certain position, it can cause the second liquid level switch to switch on and off, thereby outputting a control signal.

[0093] In some embodiments of the present invention, such as Figures 1 to 8 As shown, the electrolysis component 112 is immersed in the electrolyte. A buffer space 130 is provided between the top of the electrolysis component 112 and the top of the working space 113, and the liquid level detection component 120 is located within the buffer space 130. Because of the buffer space 130, the liquid level detection device 120 can detect the liquid level before it drops below the top of the electrolysis component 112 and send a signal, allowing for the replenishment of electrolyte. This prevents the electrolysis component 112 from being exposed to the electrolyte, thus avoiding any impact on the working efficiency of the controlled atmosphere device 100.

[0094] In some embodiments of the present invention, such as Figures 4 to 6 As shown, the liquid level detection assembly 120 includes at least two liquid level switches, at least one of which is a contact liquid level switch and / or at least one of which is a non-contact liquid level switch, with one portion of the liquid level switches positioned above the other portion. This embodiment uses two liquid level switches as an example. When the lower liquid level switch detects that the liquid level is below the minimum liquid level, it issues a replenishment signal to remind the user or automatically replenishes the electrolyte. When the upper liquid level switch detects that the liquid level is above the maximum liquid level, it issues a stop replenishment signal to remind the user or automatically stops replenishment.

[0095] In some embodiments of the present invention, the liquid level detection assembly includes two liquid level switch groups, each liquid level switch group including at least one non-contact first liquid level switch and / or a contact second liquid level switch, with the liquid level switches in each liquid level switch group located at the same height. One liquid level switch group is positioned above the other liquid level switch group. Because each liquid level switch group has multiple liquid level switches, liquid level detection is more accurate, preventing measurement errors or malfunctions from occurring in only one liquid level switch.

[0096] In some embodiments of the present invention, the number of the two liquid level switch groups is equal, and a first liquid level switch or a second liquid level switch of one liquid level switch group is located directly above a first liquid level switch or a second liquid level switch of the other liquid level switch group.

[0097] In some embodiments of the present invention, the controlled atmosphere device 100 further includes a controlled atmosphere control module. The controlled atmosphere control module is connected to the liquid level detection component 120 and the electrolysis component 112, and is configured to: acquire a first response signal output by the liquid level detection component 120 in response to a liquid level height not exceeding a first liquid level threshold. For example, the first liquid level threshold is a low liquid level threshold, and the first response signal is a replenishment signal. When the liquid level height is equal to or lower than the first liquid level threshold, the controlled atmosphere device 100 needs to replenish electrolyte. The liquid level detection component 120 outputs a replenishment signal, and the controlled atmosphere control module acquires this replenishment signal to complete the replenishment.

[0098] The controlled atmosphere control module is also configured to generate a fault signal for the liquid level detection component 120 in response to a duration not less than a first time threshold and a working load of the electrolysis component 112 not less than a load threshold. For example, the working load is the operating current of the controlled atmosphere device 100, and the load threshold can be a current threshold. As explained in detail above, the electrolyte will decrease over time, so the liquid level detection component 120 can issue a replenishment signal at regular intervals, which is the first time threshold. When the controlled atmosphere device 100 is operating, if the duration not receiving a replenishment signal is greater than or equal to the first time threshold, and the operating current is greater than or equal to the current threshold, it indicates that electrolyte replenishment is not required. However, if the liquid level detection component 120 fails to issue a replenishment signal within the first time threshold, then the liquid level detection component 120 has malfunctioned. At this time, the controlled atmosphere control module generates a fault signal for the liquid level detection component 120, and the controlled atmosphere device 100 can be used normally before maintenance.

[0099] In some embodiments of the present invention, such as Figures 1 to 8 As shown, the working space 113 is connected to the replenishment port 114, and the replenishment port 114 is configured to allow electrolyte from outside the working space 113 to be injected into the working space 113. Figure 7 and Figure 8 As shown, the controlled atmosphere device 100 has a liquid storage space 200 outside, which is used to store electrolyte. The liquid storage space 200 is connected to a replenishment port 114 through a pipeline, and the electrolyte in the liquid storage space 200 can be allowed to enter the working space 113 through the replenishment port 114 under the action of external force. For example, the electrolyte in the liquid storage space 200 can be transported to the working space 113 by a replenishment pump. In some alternative embodiments, the controlled atmosphere device 100 may include a liquid storage space 200, which is disposed above the working space 113. The electrolyte in the liquid storage space 200 can enter the working space 113 under the action of gravity to replenish the electrolyte consumed in the working space 113.

[0100] The controlled atmosphere device 100 also includes a controlled atmosphere control module, which is connected to the liquid level detection component 120 and the electrolysis component 112, and is configured to generate a replenishment signal for injecting electrolyte into the working space 113 in response to a liquid level height not exceeding a first liquid level threshold. When the liquid level height is equal to or lower than the first liquid level threshold, i.e., at a low liquid level threshold, the controlled atmosphere device 100 needs to replenish electrolyte. The liquid level detection component 120 outputs a replenishment signal, which the controlled atmosphere control module acquires to complete the replenishment.

[0101] The controlled atmosphere control module is also configured to generate a fault signal corresponding to electrolyte leakage if the number of replenishment signals generated within a set time is not less than a response threshold and the working load of the electrolysis component 112 is not higher than a load threshold. In other words, if multiple replenishment signals are generated within the set time and the working space 113 is replenished multiple times, but the operating current is still less than or equal to the current threshold, electrolyte leakage occurs, and an electrolyte leakage fault signal is generated. This configuration of the controlled atmosphere control module allows for timely detection of electrolyte leakage and prompt repair, preventing the controlled atmosphere device from malfunctioning.

[0102] The controlled atmosphere control module is also configured to generate a fault signal for the liquid level detection component 120 if the number of times the replenishment signal is generated within a set time is not less than a response threshold and the working load of the electrolysis component 112 is not less than a load threshold. In other words, if the working current is greater than or equal to the current threshold only after multiple replenishment signals are generated within the set time and the working space 113 is replenished multiple times, it indicates that the liquid level detection component 120 has malfunctioned, and a fault signal for the liquid level detection component 120 is generated. This configuration of the controlled atmosphere control module allows for timely detection of faults in the liquid level detection component 120, enabling prompt repair and preventing the controlled atmosphere device from malfunctioning.

[0103] In some embodiments of the present invention, the working space 113 is connected to the replenishment port 114, which is configured to allow the replenishment pump to inject electrolyte into the working space 113. The replenishment pump is configured to stop in response to a discharge pressure not lower than a discharge threshold. When the discharge pressure is greater than or equal to the discharge threshold, it indicates that the replenishment pump is not draining properly, resulting in increased discharge pressure and a blockage in the pipeline between the replenishment pump and the replenishment port 114. In this case, the replenishment pump needs to be stopped for maintenance.

[0104] The controlled atmosphere device 100 also includes a controlled atmosphere control module, which is connected to the liquid level detection component 120 and the electrolysis component 112, and is configured to generate a start signal for the replenishment pump in response to a liquid level height not exceeding a first liquid level threshold. When the liquid level height is less than or equal to the first liquid level threshold, i.e., a low liquid level threshold, it indicates that the liquid level is too low and replenishment is required. At this time, the controlled atmosphere control module generates a start signal for the replenishment pump to replenish electrolyte into the working space 113.

[0105] The controlled atmosphere control module is also configured to generate a fault signal indicating blockage in the pipeline between the replenishment pump and the replenishment port 114 if the working load of the electrolysis component 112 is not higher than the load threshold within a set time after the power-on signal is generated. In other words, even though the power-on signal for the replenishment pump has been generated for the set time and the pump has been operating for the set time, if the operating current is still less than or equal to the current threshold, it indicates that the pipeline between the replenishment pump and the replenishment port 114 is blocked, meaning that electrolyte has not entered the working space 113 or the amount of electrolyte entering the working space 113 is insufficient. In this case, the controlled atmosphere control module generates a fault signal indicating blockage in the pipeline between the replenishment pump and the replenishment port 114 to facilitate timely maintenance.

[0106] In some embodiments of the present invention, such as Figures 1 to 8 As shown, at least one liquid inlet 114 and at least one exhaust outlet 115 are formed at the top of the working space 113. The controlled atmosphere module can absorb oxygen from the storage space and generate oxygen through an electrochemical reaction within the working space 113. The accumulation of oxygen within the working space 113 increases the pressure, which can affect the electrochemical reaction. Therefore, the oxygen needs to be discharged in a timely manner, hence the exhaust outlet 115. The number of liquid inlets 114 and exhaust outlets 115 can be set as needed.

[0107] The controlled atmosphere device 100 also includes an anti-overflow mechanism configured to close the replenishment port 114 in response to the liquid level height being not lower than a second liquid level threshold. The second liquid level threshold is a high liquid level threshold, which is relative to the low liquid level threshold in the above embodiments. When the liquid level height is higher than or equal to the second liquid level threshold, there is a risk of electrolyte overflow, therefore the replenishment port 114 needs to be closed promptly; the anti-overflow mechanism serves to close the replenishment port 114.

[0108] In some embodiments of the present invention, such as Figures 1 to 8As shown, the spill prevention mechanism includes a float 151, which is disposed within the working space 113 and floats on the surface of the electrolyte. The top of the float 151 forms at least one sealing portion positioned opposite the replenishment port 114 and / or is connected to at least one sealing device positioned opposite the replenishment port 114. The float 151 can move with the rise and fall of the liquid level. When the liquid level reaches a second liquid level threshold, i.e., a high liquid level threshold, the sealing portion at the top of the float 151 can seal the replenishment port 114. The sealing portion can be made of an elastic material. Alternatively, in some other embodiments, the sealing device connected to the top of the float 151 can seal the replenishment port 114. For example, the sealing device can be a large-area waterproof and breathable membrane that can seal the replenishment port, preventing liquid from passing through while allowing gas to pass through.

[0109] In some embodiments of the present invention, the anti-overflow mechanism further includes a guide component disposed within the working space 113 and reciprocatingly guided to the float 151. The guide component forms an upper stop structure and / or a lower stop structure, wherein the upper stop structure is configured to stop the float 151 at its highest upward position, and the lower stop structure is configured to stop the float 151 at its lowest downward position. Driven by the liquid surface and confined by the guide component, the float 151 reciprocates in the vertical direction. In this case, the sealing part or sealing device can be made smaller, as long as it can cover the liquid inlet 114.

[0110] In some embodiments of the present invention, such as Figures 1 to 8 As shown, the spill prevention mechanism also includes a vertically extending guide rod 152. The upper end of the guide rod 152 is located at the top of the working space 113, and the lower end of the guide rod 152 is provided with a horizontally extending stop rod 153. A guide hole is formed on the float 151, which slides back and forth on the guide rod 152. The float 151 is stopped between the top of the working space 113 and the stop rod 153. Due to the presence of the guide rod, the stop rod, and the guide hole, the float 151 can reciprocate in the vertical direction under the influence of the liquid surface, thus sealing the liquid inlet 114, and the size of the sealing part or sealing device does not need to be too large.

[0111] This invention also provides a refrigeration and freezing apparatus, including a storage compartment and a controlled atmosphere device 100 as described in any of the above embodiments. The storage compartment forms a storage space for storing items and a storage opening for retrieving items. The controlled atmosphere device 100 is disposed on the wall of the storage compartment adjacent to the storage opening and / or on the wall of the storage compartment opposite to the storage opening. For example, the controlled atmosphere device 100 is disposed on the top wall of the storage compartment. Specifically, the top wall of the storage compartment has a through opening, and an upwardly extending barrier is provided at the edge of the opening; the lower end of the controlled atmosphere device 100 is inserted into the barrier. A moisture-permeable membrane may also be disposed below the controlled atmosphere device 100.

[0112] In the refrigeration and freezing apparatus of this embodiment, the controlled atmosphere device 100 consumes oxygen in the storage space, creating an oxygen-deficient atmosphere. This reduces the intensity of aerobic respiration of fruits, vegetables, and other food items within the storage space, thereby enabling the storage space to maintain freshness and extending the shelf life of the food. The oxygen produced by the controlled atmosphere device 100 can be discharged to other spaces within the refrigeration and freezing apparatus. Because the amount of oxygen produced is relatively small compared to the volume of other spaces, it will not affect them. Alternatively, the produced oxygen can be discharged to the outside of the refrigeration and freezing apparatus via pipelines. In the refrigeration and freezing apparatus of this embodiment, the controlled atmosphere device 100 has a controlled atmosphere control module. Therefore, the refrigeration and freezing apparatus can perform all the control functions of the controlled atmosphere control module in the above embodiments, which will not be elaborated further here.

[0113] This invention also provides a refrigeration and freezing device, including a storage compartment, a controlled atmosphere device 100 as described in some of the above embodiments, and a main control module. In this embodiment, the controlled atmosphere device does not have a controlled atmosphere control module; instead, the main control module of the refrigeration and freezing device performs the control functions. Furthermore, this main control module can perform all the control functions of the controlled atmosphere control module described in the above embodiments, which will not be elaborated further here.

[0114] The storage compartment forms a storage space for storing items and a storage opening for retrieving items. The controlled atmosphere device 100 is installed on the wall of the storage compartment adjacent to the storage opening and / or on the wall of the storage compartment opposite to the storage opening. The main control module is connected to the liquid level detection component 120 and the electrolysis component 112 of the controlled atmosphere device 100, and is configured to control the injection of electrolyte into the working space 113 of the controlled atmosphere device 100 based on the liquid level height measured by the liquid level detection component 120.

[0115] In the refrigeration and freezing apparatus of this invention, since a liquid level detection component 120 and a main control module are provided, electrolyte can be injected into the working space 113 when the liquid level in the working space 113 is low, so that the electrochemical reaction in the working space 113 can proceed normally.

[0116] Therefore, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Thus, the scope of the present invention should be understood and construed as covering all such other variations or modifications.

Claims

1. A controlled atmosphere device, characterized in that, include: The main component includes a chamber and at least one electrolysis component connected thereto. The chamber forms or the chamber and the electrolysis component enclose a working space for holding electrolyte. The electrolysis component is configured to consume oxygen in the storage space outside the chamber by performing an electrochemical reaction through the electrolyte. A liquid level detection component is provided, which is configured to correspond one-to-one with the electrolysis components or to correspond to at least two of the electrolysis components, and is configured to detect the liquid level height of the electrolyte in the working space; The liquid level detection component includes at least one non-contact first liquid level switch; The working space is connected to a liquid replenishment port, which is configured to allow the electrolyte outside the working space to be injected into the working space. as well as The controlled atmosphere device further includes: A controlled atmosphere control module, which is connected to the liquid level detection component and the electrolysis component, and configured to: In response to the liquid level height not being higher than a first liquid level threshold, a replenishment signal is generated to inject the electrolyte into the working space; In response to the fact that the number of times the replenishment signal is generated within a set time is not less than a response threshold and the working load of the electrolysis component is not higher than a load threshold, a fault signal corresponding to at least the electrolyte leakage is generated; or, in response to the fact that the number of times the replenishment signal is generated within a set time is not less than a response threshold and the working load of the electrolysis component is not lower than a load threshold, a fault signal of the liquid level detection component is generated.

2. The controlled atmosphere device according to claim 1, characterized in that, The first liquid level switch has one and is disposed in a groove formed by a recess outside the tank body or inside the tank wall, wherein the groove cavity and the working space are spaced apart; or There are two or more first level switches, wherein at least one is disposed outside the chamber and / or at least one is disposed inside the groove.

3. The controlled atmosphere device according to claim 1, characterized in that, The liquid level detection assembly includes at least one contact-type second liquid level switch, and at least the detection part of the second liquid level switch extends into the working space.

4. The controlled atmosphere device according to claim 2 or 3, characterized in that, The electrolysis assembly is immersed in the electrolyte, and there is a buffer space between the top of the electrolysis assembly and the top of the working space, and the liquid level detection assembly is located in the buffer space.

5. The controlled atmosphere device according to claim 1, characterized in that, The liquid level detection assembly includes at least two liquid level switches, at least one of the liquid level switches being a contact liquid level switch and / or at least one of the liquid level switches being a non-contact liquid level switch, and one portion of the liquid level switches being positioned above the other portion of the liquid level switches.

6. The controlled atmosphere device according to claim 1, characterized in that, The controlled atmosphere device further includes: A controlled atmosphere control module, which is connected to the liquid level detection component and the electrolysis component, and configured to: In response to the liquid level height not exceeding a first liquid level threshold, a first response signal output by the liquid level detection component is acquired; and If the duration of not receiving the first response signal is not less than a first time threshold and the working load of the electrolysis component is not less than a load threshold, then a fault signal of the liquid level detection component is generated.

7. The controlled atmosphere device according to claim 1, characterized in that, The working space is connected to a replenishment port, which is configured to allow a replenishment pump to inject the electrolyte into the working space, wherein the replenishment pump is configured to stop in response to a discharge pressure not being lower than a discharge threshold. as well as The controlled atmosphere device further includes: A controlled atmosphere control module, which is connected to the liquid level detection component and the electrolysis component, and configured to: In response to the liquid level not being higher than the first liquid level threshold, a start signal for the replenishment pump is generated; If, within a set time after the power-on signal is generated, the working load of the electrolysis component does not exceed the load threshold, a fault signal indicating blockage in the pipeline between the replenishment pump and the replenishment port is generated.

8. The controlled atmosphere device according to claim 1, characterized in that, The top of the workspace forms at least one liquid inlet and at least one vent outlet; and The controlled atmosphere device further includes: The spill prevention mechanism is configured to: In response to the liquid level height not being lower than the second liquid level threshold, the liquid inlet is closed.

9. The controlled atmosphere device according to claim 8, characterized in that, The anti-overflow mechanism includes a float disposed within the working space and floating on the surface of the electrolyte. The top of the float forms at least one closed portion disposed opposite to the replenishment port and / or is connected to at least one sealing device disposed opposite to the replenishment port.

10. The controlled atmosphere device according to claim 9, characterized in that, The spill prevention mechanism also includes a guide component, which is disposed within the working space and is reciprocally guided to the float. An upper stop structure and / or a lower stop structure are formed on the guide component, wherein the upper stop structure is configured to stop the float at its highest rising position, and the lower stop structure is configured to stop the float at its lowest sinking position.

11. The controlled atmosphere device according to claim 9, characterized in that, The spill prevention mechanism further includes a vertically extending guide rod, the upper end of which is located at the top of the workspace, and the lower end of which is provided with a horizontally extending stop; and The float has a guide hole that slides back and forth on the guide rod, and the float is stopped between the top of the working space and the stop rod.

12. The controlled atmosphere device according to claim 1, characterized in that, The chamber is a plate-frame shape with openings on the front and rear sides or on the top and bottom sides. The electrolysis assembly includes a cathode assembly and an anode assembly connected to the openings on both sides of the chamber. The working space is at least partially enclosed by the chamber, the cathode assembly, and the anode assembly; or The chamber is shell-shaped with an opening on the front or bottom. The electrolysis assembly is disposed within the opening and includes a cathode assembly and an anode assembly spaced apart from each other. The working space includes a liquid storage space and a reaction space. The liquid storage space is located between the shell and the electrolysis assembly, and the reaction space is located between the cathode assembly and the anode assembly.

13. A refrigeration and freezing apparatus, characterized in that, include: A storage compartment, wherein the storage compartment forms a storage space for storing items and a storage opening for retrieving items; The controlled atmosphere device as described in any one of claims 1 to 12, wherein the controlled atmosphere device is disposed on the wall of the storage compartment adjacent to the storage opening and / or on the wall of the storage compartment opposite to the storage opening.

14. A refrigeration and freezing apparatus, characterized in that, include: A storage compartment, wherein the storage compartment forms a storage space for storing items and a storage opening for retrieving items; The controlled atmosphere device as described in any one of claims 1 to 5 and 8 to 12 is disposed on the wall of the storage compartment adjacent to the storage opening and / or on the wall of the storage compartment opposite to the storage opening. The main control module is connected to the liquid level detection component and the electrolysis component of the controlled atmosphere device, and is configured to control the injection of electrolyte into the working space of the controlled atmosphere device according to the liquid level height measured by the liquid level detection component.

15. The refrigeration and freezing apparatus according to claim 14, characterized in that, The main control module is also configured to: In response to whether the liquid level height is not higher than a first liquid level threshold, a first response signal output by the liquid level detection component is acquired; and If the duration of not receiving the first response signal is not less than a first time threshold and the working load of the electrolysis component is not less than a load threshold, then a fault signal of the liquid level detection component is generated.

16. The refrigeration and freezing apparatus according to claim 14, characterized in that, The main control module is also configured to: In response to whether the liquid level height is not higher than a first liquid level threshold, a replenishment signal is generated to inject the electrolyte into the workspace; In response to the fact that the number of times the replenishment signal is generated within a set time is not less than a response threshold and the working load of the electrolysis component is not higher than a load threshold, a fault signal corresponding to at least the electrolyte leakage is generated; or, in response to the fact that the number of times the replenishment signal is generated within a set time is not less than a response threshold and the working load of the electrolysis component is not lower than a load threshold, a fault signal of the liquid level detection component is generated.

Images