Ice temperature oxygen reduction drawer and refrigerator

Abstract

This application relates to an ice-temperature-reducing oxygen drawer and a refrigerator. The ice-temperature-reducing oxygen drawer includes: an outer shell, an oxygen reduction component, and an air intake component. The oxygen reduction component is installed on the top surface of the outer shell and includes a first region, a second region, and a third region arranged consecutively. Multiple hollow fiber membranes are arranged in the second region along the same direction. A fixed baffle is provided between the first region and the second region, and a piston plate is provided between the second region and the third region. The piston plate is connected to a preset side of the third region via a drive shaft. One end of each hollow fiber membrane passes through a different preset position of the fixed baffle and communicates with the first region. The other end of each hollow fiber membrane is closed and connected to a different preset position of the piston plate. The air intake component is installed on the top surface of the outer shell and communicates with the first region for extracting gas from the first region. The piston plate is configured to push the other end of the hollow fiber membrane toward the fixed baffle under the drive of a drive motor.

Description

Technical Field

[0001] This application relates to the field of refrigerators, and in particular to an ice-temperature-reducing oxygen drawer and a refrigerator. Background Technology

[0002] In modern life, food preservation plays a crucial role, directly affecting food quality, safety, and shelf life. Especially under low-temperature storage conditions, how to further improve preservation efficiency and effectively extend the shelf life of food has always been a core focus of research in the field of food science and engineering.

[0003] Traditional food preservation methods, such as refrigeration and freezing, slow down the spoilage process by lowering the ambient temperature. However, their preservation effect has certain limitations, and maintaining a low-temperature environment requires a large amount of energy, resulting in high costs. While the use of chemical preservatives can extend the shelf life to some extent, some chemicals may pose potential risks to human health, making it increasingly difficult to meet consumers' high demands for food safety.

[0004] In recent years, ice-temperature deoxygenation technology, as a novel food preservation technology, has gradually been applied and gained attention in this field. Its core principle lies in reducing the oxygen concentration in the storage environment while precisely maintaining the storage temperature close to the food's freezing point, thereby inhibiting oxidation reactions and the growth and reproduction of microorganisms, thus extending the food's shelf life. Compared to traditional methods, ice-temperature deoxygenation technology has shown improved preservation effects and demonstrates promising application prospects.

[0005] However, existing ice-temperature deoxygenation technology still has significant drawbacks in practical applications. On the one hand, because this technology requires maintaining the ambient temperature at near-freezing temperatures, the low temperature significantly slows down the movement rate of gas molecules, reducing gas separation efficiency and failing to quickly create the optimal gaseous environment for food, thus affecting the timely achievement of preservation effects. On the other hand, traditional deoxygenation technologies typically use fans to accelerate gas circulation in order to improve gas separation rates. However, this method accelerates the evaporation of moisture from fruits and vegetables, causing food dehydration, which in turn negatively impacts the preservation effect and damages the original quality of the food.

[0006] Therefore, in view of the above-mentioned problems with existing ice-temperature deoxygenation technology, developing a technology that can achieve efficient and rapid gas separation in an ice-temperature environment while avoiding excessive water loss from food, thereby effectively extending the food preservation time, has become a key issue that urgently needs to be addressed in the current food preservation field. Utility Model Content

[0007] This application provides an ice-temperature oxygen-reducing drawer and refrigerator to solve the technical problem in the prior art where the gas movement rate slows down under low-temperature conditions, leading to a decrease in the oxygen separation efficiency of the oxygen-enriched membrane.

[0008] This utility model provides an ice-temperature-reducing and oxygen-lowering drawer, installed in the refrigerator compartment, comprising:

[0009] shell;

[0010] An oxygen reduction component is installed on the inner top surface of the housing. The component includes a first region, a second region, and a third region continuously arranged along a preset direction. Multiple hollow fiber membranes are arranged in the second region along the same direction. A fixed baffle is provided between the first and second regions, and a piston plate is provided between the second and third regions. The piston plate is connected to a preset side of the third region via a drive shaft. The second region is configured to communicate with the internal cavity of the housing under preset conditions. The hollow fiber membranes are used to dissolve and separate oxygen. One end of each hollow fiber membrane passes through a different preset position of the fixed baffle and communicates with the first region. The other end of each hollow fiber membrane is closed and connected to a different preset position of the piston plate.

[0011] An air intake assembly is installed on the outer top surface of the housing and is connected to the first region for extracting internal gas from the first region.

[0012] The piston plate is configured to push the other end of the hollow fiber membrane toward the fixed baffle under the drive of the drive motor, so as to compress the air between the outside of the hollow fiber membrane and the second region, thereby increasing the gas pressure difference between the inside and outside of the hollow fiber membrane, so that the oxygen outside the hollow fiber membrane can quickly diffuse and flow into the inside of the hollow fiber membrane, flow into the first region, and be discharged to the atmosphere by the air intake assembly.

[0013] The oxygen reduction component includes a component shell, and the internal cavity of the component shell forms a first region, a second region, and a third region. The bottom surface of the component shell has air holes that communicate with the second region, and the internal cavity of the shell communicates with the second region through the air holes.

[0014] A first baffle is provided between the air hole and the component housing. The first baffle is constructed as a louver structure and its opening and closing are controlled by the pressure difference between the second region and the internal cavity, thereby controlling the communication state between the air hole and the second region.

[0015] The third region has a pre-set side surface with a wet film connected to a humidification pipe for replenishing water to the wet film; the wet film is configured to retain moisture escape under low pressure conditions.

[0016] The ice-temperature oxygen-reducing drawer includes a second baffle, and the piston plate controls the connection and closure between the third region and the second region through the second baffle.

[0017] The outer top surface of the outer casing is equipped with a first electromagnet, and the outer bottom surface of the outer casing is equipped with a second electromagnet. Both the first and second electromagnets are used to drive oxygen in the air to move in the opposite direction to carbon dioxide and nitrogen. An upper magnetic field is formed on the outer top surface of the outer casing to accelerate the movement of oxygen in the air towards the inner top surface of the outer casing. A lower magnetic field is formed on the outer bottom surface of the outer casing to drive the air to be evenly distributed inside the outer casing. The first and second electromagnets are configured to be energized at different times.

[0018] The ice-temperature oxygen-reducing drawer includes a drawer body, which is configured to be inserted into the outer shell. The oxygen-reducing component is used to remove oxygen from the air inside the drawer body and the outer shell.

[0019] The air intake assembly includes a pump body and an air extraction pipe. One end of the air extraction pipe is connected to the pump body, and the other end of the air extraction pipe is connected to the first area. The pump body is also connected to an exhaust pipe.

[0020] The inner wall of the outer casing is provided with a sensor assembly, which includes a temperature sensor and an oxygen sensor. The temperature sensor is used to detect the temperature inside the drawer body in real time; the oxygen sensor is used to detect the oxygen concentration inside the drawer body in real time.

[0021] This utility model also provides a refrigerator, including the aforementioned ice-temperature and oxygen-reducing drawer.

[0022] The technical solutions provided in this application have the following advantages compared with the prior art:

[0023] The ice-temperature oxygen-reducing drawer and refrigerator provided in this application embodiment can further accelerate the discharge of oxygen from the hollow fiber membrane under the action of the piston plate. Specifically, it increases the pressure difference between the inside and outside of the hollow fiber membrane, and accelerates the collision of gas molecules outside the membrane to accelerate gas movement, significantly improving the oxygen separation efficiency. Furthermore, the reciprocating motion of the piston plate performs small-circulation ventilation on the oxygen-reducing component. The piston plate compression expands the dense tubular hollow fiber membrane, accelerating the gas exchange inside the membrane bundle. The piston plate resets and straightens the dense tubular hollow fiber membrane to squeeze out the internal gas, while creating a local low-pressure environment inside the oxygen-reducing component, accelerating the gas exchange rate with the drawer body, and avoiding the accumulation of carbon dioxide and nitrogen on the surface of the hollow fiber membrane. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0027] Figure 1 A schematic diagram of the separate structure of the outer shell and the drawer body of the ice-temperature-reducing drawer provided in the embodiments of this application;

[0028] Figure 2 This is a schematic diagram of the piston plate reciprocating during the open state of the oxygen reduction component provided in this application embodiment;

[0029] Figure 3 This is a schematic diagram of the structure of the oxygen reduction assembly provided in this application where the piston plate is not moved;

[0030] Figure 4 A schematic diagram showing the connection between the oxygen reduction component and the motor and pump body;

[0031] Figure 5 A schematic diagram showing the open and closed states of the first baffle at the bottom of the component housing;

[0032] Figure 6 This is a top view of the ice-temperature oxygen-reducing drawer.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Outer shell; 2. Drawer body; 3. Oxygen reduction component; 301. Component outer shell; 302. Hollow fiber membrane; 303. Drive shaft; 304. Piston plate; 305. Suction pipe; 306. First baffle; 307. Air hole; 308. Wet film; 309. Humidification pipe; 310. Second baffle; 4. Pump body; 5. Exhaust pipe; 6. First electromagnet; 7. Second electromagnet; 8. Motor; 9. Sensor assembly; 10. Gear. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0037] For ease of description, spatial relative terms may be used in this text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptions used in this text have been explained accordingly.

[0038] Currently, ice-temperature deoxygenation technology is increasingly being applied in the food preservation field. Its core principle is to reduce the oxygen concentration in the storage environment and maintain the storage temperature close to the food's freezing point, thereby inhibiting oxidation and microbial growth and extending shelf life. However, existing technologies, due to the lower temperature, slow down the movement of gas molecules, resulting in reduced separation efficiency and an inability to quickly create the optimal gaseous environment for food. Furthermore, traditional deoxygenation technologies typically use fans to accelerate gas circulation, thereby increasing the gas separation rate, but this method leads to faster water loss in fruits and vegetables, affecting the food preservation effect.

[0039] To alleviate the above problems, this application provides an ice-temperature oxygen-reducing drawer. It utilizes the magnetic properties of gases (paramagnetism of oxygen, diamagnetic properties of carbon dioxide and nitrogen) and their motion characteristics. The direction of gas movement is controlled by an electromagnet. By compressing the gas, the density and collision frequency of gas molecules are increased, accelerating the separation of oxygen, thereby effectively extending the shelf life of food in an ice-temperature environment.

[0040] For details, please refer to Figures 1-6 This application provides an ice-temperature oxygen-reducing drawer, including: a shell 1, an oxygen-reducing component 3, and an air-suction component. The oxygen-reducing component 3 is installed on the inner top surface of the shell 1 and includes a first region, a second region, and a third region continuously arranged along a preset direction. Multiple hollow fiber membranes 302 are arranged in the second region along the same direction. A fixed baffle is provided between the first region and the second region, and a piston plate 304 is provided between the second region and the third region. The piston plate 304 is connected to a preset side of the third region via a drive shaft 303. The second region is configured to communicate with the internal cavity of the shell 1 under preset conditions. The hollow fiber membranes 302 are used to dissolve and separate oxygen. One end of each hollow fiber membrane 302 passes through different preset positions of the fixed baffle and communicates with the first region. The hollow fiber membrane 302 is in a closed state and is connected to the piston plate 304 at different preset positions. The suction component is installed on the outer top surface of the housing 1 and is connected to the first region to extract the internal gas of the first region. The piston plate 304 is configured to push the other end of the hollow fiber membrane 302 toward the fixed baffle under the drive of the drive motor 8 to compress the air between the outside of the hollow fiber membrane 302 and the second region (at this time, the cavity pressure is less than the pressure of the second region, and the first baffle 306 on the vent hole mentioned later is pushed downward and kept closed). This is used to increase the pressure difference between the inside and outside of the hollow fiber membrane 302 so that the oxygen outside the hollow fiber membrane 302 can quickly diffuse and flow into the inside of the hollow fiber membrane 302 and flow to the first region, and be discharged to the atmosphere by the suction component.

[0041] For example, the air intake component is connected to the first region and is used to extract the internal gas of the first region. Subsequently, the internal gas of the hollow fiber membrane 302 flows to the first region and is extracted, causing the internal pressure of the hollow fiber membrane 302 to drop, forming a gas pressure difference between the inside and outside of the hollow fiber membrane 302, so that oxygen on the outside of the hollow fiber membrane 302 diffuses and flows to the inside of the hollow fiber membrane 302 and the first region, and is drawn to the atmosphere by the air intake component.

[0042] In this way, the oxygen discharge from the hollow fiber membrane 302 can be further accelerated under the action of the piston plate 304. Specifically, the pressure difference between the inside and outside of the hollow fiber membrane 302 is increased, and the collision of gas molecules outside the membrane is accelerated, thereby accelerating gas movement and significantly improving the oxygen separation efficiency. Furthermore, the reciprocating motion of the piston plate 304 is used to perform small-circulation gas exchange on the oxygen reduction component 3. The compression of the piston plate 304 expands the dense tubular hollow fiber membrane 302, accelerating the gas exchange inside the membrane bundle. The resetting of the piston plate 304 straightens and squeezes out the internal gas of the dense tubular hollow fiber membrane 302, while creating a local low-pressure environment inside the oxygen reduction component 3, accelerating the gas exchange rate with the drawer body 2, and avoiding the accumulation of carbon dioxide and nitrogen on the surface of the hollow fiber membrane 302.

[0043] Specifically, by utilizing the paramagnetism of oxygen and the diamagnetic properties of carbon dioxide and nitrogen, an electromagnet generates a magnetic field to control the direction of gas movement. When the gas inside drawer 2 is in the magnetic field, oxygen will move towards the direction of higher magnetic field strength, while carbon dioxide and nitrogen will move towards the direction of lower magnetic field strength, thus achieving a preliminary gas separation tendency and creating conditions for subsequent separation of oxygen through the hollow fiber membrane 302.

[0044] Furthermore, the second region of the oxygen reduction component 3 is equipped with multiple hollow fiber membranes 302, which have the characteristic of selectively adsorbing oxygen. When the gas inside the drawer body 2 comes into contact with the hollow fiber membranes 302, the oxygen dissolves and is drawn into the membrane. Since one end of the hollow fiber membrane 302 is connected to the first region and the other end is connected to the third region, it provides a channel for oxygen transmission. Driven by the drive motor 8, the piston plate 304 pushes the other end of the hollow fiber membrane 302 to reciprocate towards the fixed baffle. When the piston plate 304 moves forward, it compresses the air between the outer side of the hollow fiber membrane 302 and the outer periphery of the second region, increasing the external air pressure and the pressure difference between the inside and outside of the hollow fiber membrane 302. This not only promotes the rapid flow of oxygen inside the hollow fiber membrane 302 to the first region, but also accelerates the collision of gas molecules outside the membrane, further accelerating the gas movement speed and improving the oxygen separation efficiency.

[0045] In addition, the reciprocating motion of the piston plate 304 can also provide small-scale air exchange for the oxygen reduction assembly 3. When the piston plate 304 is compressed, it expands the dense tubular hollow fiber membrane 302, increasing the internal space of the membrane bundle and accelerating gas exchange within the membrane bundle; when the piston plate 304 returns to its original position, it straightens the hollow fiber membrane 302, squeezing out some of the gas inside the membrane. At the same time, this motion creates a local low-pressure environment within the oxygen reduction assembly 3, making it easier for gas in the drawer body 2 to enter the oxygen reduction assembly 3, accelerating the exchange rate with the gas in the drawer body 2, preventing the accumulation of carbon dioxide and nitrogen on the surface of the hollow fiber membrane 302, and ensuring that the hollow fiber membrane 302 can always efficiently adsorb oxygen.

[0046] In addition, the air suction component is installed on the top surface of the outer shell 1 and communicates with the first area. When the oxygen in the hollow fiber membrane 302 flows to the first area under the action of pressure difference, the air suction component will discharge the gas (mainly oxygen) in the first area to the atmosphere, thereby reducing the oxygen content in the drawer body 2, creating a low-oxygen environment, and effectively extending the food preservation time under ice temperature conditions.

[0047] Considering the scheme that the three regions of the oxygen reduction component 3 are formed in the internal cavity of the component housing 301 (which can also be understood as the space where the drawer body 2 is located), in the ice-temperature oxygen reduction drawer provided in this application embodiment, the oxygen reduction component 3 includes the component housing 301, the internal cavity of the component housing 301 forms a first region, a second region and a third region, the bottom surface of the component housing 301 has an air hole 307, the air hole 307 communicates with the second region, and the internal cavity of the housing 1 communicates with the second region through the air hole 307.

[0048] In this way, the gas in the internal cavity of the component housing 301 (which can also be understood as the space where the drawer body 2 is located) can be drawn into the second area, and then through the reciprocating motion of the piston plate 304, the oxygen dissolved and permeated in the hollow fiber membrane 302 can be quickly discharged to the first area and then discharged into the atmosphere.

[0049] Specifically, the outer shell 301 of the oxygen reduction component 3 is the core carrier for realizing gas circulation and oxygen separation. Its internal cavity is functionally divided into a first region, a second region, and a third region, which are continuously arranged along a preset direction to form a complete channel for the oxygen reduction process. The bottom surface of the outer shell 301 is provided with a vent 307 that communicates with the second region. This structural design serves as a gas exchange hub between the internal cavity of the outer shell 1 and the oxygen reduction component 3. When the oxygen reduction component 32 is in operation, the gas in the internal cavity of the outer shell 1 (food storage space) can flow naturally into the second region through the vent 307, providing raw material gas for oxygen separation. At this time, multiple hollow fiber membranes 302 arranged along a preset direction in the second region begin to function—due to the high selectivity of the hollow fiber membranes 302 for oxygen dissolution and permeation, oxygen in the gas flowing into the second region is separated into the membrane interior by the hollow fiber membranes 302.

[0050] Furthermore, as the drive motor 8 starts, the piston plate 304, which is pre-connected to the side of the third region, begins to reciprocate under the drive of the transmission shaft 303. When the piston plate 304 moves towards the fixed baffle, the space outside the hollow fiber membrane 302 in the second region is compressed, causing the external air pressure to increase. Since one end of the hollow fiber membrane 302 is closed and the other end is connected to the first region, and the first region is connected to the atmosphere (in a low-pressure state) through the air intake assembly, this process significantly increases the pressure difference between the inside and outside of the hollow fiber membrane 302. Under the action of this pressure difference, the oxygen separated inside the membrane accelerates its flow towards the low-pressure side (the first region), while the collision frequency of the compressed external gas molecules increases, further promoting the permeation of oxygen into the hollow fiber membrane 302 and improving the separation efficiency.

[0051] In addition, when the piston plate 304 resets away from the fixed baffle, the space in the second region expands, creating a localized low-pressure environment. At this time, the gas inside the cavity of the outer shell 1 is replenished into the second region through the vent 307 on the bottom surface of the component outer shell 301, ensuring that the second region always has sufficient gas to supply oxygen to the hollow fiber membrane 302. Simultaneously, during the resetting process of the piston plate 304, the dense tubular hollow fiber membrane 302 is straightened, and the gas remaining inside the membrane is squeezed out, preventing oxygen from stagnating inside the membrane. Meanwhile, the first region continuously discharges the collected oxygen to the atmosphere through the intake assembly, forming a closed loop of "intake-separation-exhaust".

[0052] In addition, the independent cavity design of the component housing 301 separates the first, second, and third areas from the internal space of the drawer body 2. The second area is connected to the drawer body 2 only through the bottom air hole 307. This structure not only ensures the directional flow of raw material gas, but also forms a stable air pressure fluctuation in the second area through the reciprocating motion of the piston plate 304. This avoids drastic changes in the overall air pressure inside the drawer body 2 from affecting the food storage environment. At the same time, in conjunction with ice and temperature conditions, it ultimately achieves a synergistic effect of efficient oxygen reduction and long-term preservation.

[0053] Considering the communication scheme between the second region and the internal cavity of the component housing 301, in the ice-temperature-reducing drawer provided in this application embodiment, a first baffle 306 is provided between the air vent 307 and the component housing 301. The first baffle 306 is constructed as a louver structure, and its opening and closing are controlled by the pressure difference between the second region and the internal cavity, which is used to control the communication state between the air vent 307 and the second region.

[0054] It should be noted that when the piston plate 304 moves toward the fixed baffle, it can compress the air between the outside of the hollow fiber membrane 302 and the second region, making the cavity pressure less than the pressure of the second region. The first baffle 306 is pushed downward and kept closed. When the piston plate 304 moves back to its original position, it can cause the pressure of the second region to drop sharply. The first baffle 306 opens. At this time, the cavity pressure is greater than the pressure of the second region. The first baffle 306 on the vent hole is pushed upward, accelerating the gas exchange between the second region and the internal cavity, and preventing nitrogen accumulation.

[0055] That is, when the pressure in the second region is greater than or equal to the pressure between the internal cavities, the first baffle 306 remains closed, and when the pressure in the second region is less than the pressure between the internal cavities, the first baffle 306 remains open.

[0056] Thus, the first baffle 306 added between the vent 307 and the component housing 301 becomes a key component for precisely controlling gas flow. Through its open and closed states, it works in coordination with other structures of the oxygen reduction component 3 to further optimize the efficiency of oxygen separation and discharge. The specific working principle is as follows:

[0057] When the first baffle 306 is open, the vent 307 on the bottom surface of the component housing 301 forms a communication channel with the second region. At this time, the gas inside the drawer body 2 (food storage space) can flow smoothly into the second region through this channel, providing sufficient gas for separation to the hollow fiber membrane 302. As the drive motor 8 moves the piston plate 304 towards the fixed baffle, the space in the second region is compressed, the external air pressure increases, and the hollow fiber membrane 302, with its high oxygen solubility, allows oxygen to quickly permeate and desorb into the membrane. Simultaneously, because the first region is connected to the atmosphere through the suction component to form a low-pressure environment, the oxygen inside the membrane accelerates its flow towards the first region under the action of the internal and external pressure difference, and is finally discharged into the atmosphere by the suction component, achieving efficient separation and discharge of oxygen inside the drawer body 2.

[0058] When the first baffle 306 is switched to the closed state, the connection between the vent 307 and the second region is blocked, and the gas inside the drawer body 2 cannot enter the second region. At this time, the compression motion of the piston plate 304 mainly acts on the gas already present in the second region. When the piston plate 304 moves towards the fixed baffle to compress the space of the second region, it can further increase the density and collision frequency of gas molecules outside the membrane, causing the residual oxygen in the hollow fiber membrane 302 to transfer to the first region more quickly; when the piston plate 304 is reset, the first baffle 306 is in the open state, a local low pressure is formed in the second region, the hollow fiber membrane 302 is straightened and squeezed, and the residual gas inside (mainly nitrogen, containing a small amount of undischarged oxygen) is fully discharged, avoiding the accumulation of nitrogen outside the membrane and affecting the subsequent separation efficiency.

[0059] Furthermore, the state switching of the first baffle 306 can be coordinated with the movement rhythm of the piston plate 304 to form a periodic "intake-compression separation-exhaust-emptying" cycle. For example, when the piston plate 304 returns to its original position and forms a low pressure, the first baffle 306 is opened to quickly draw in gas from the drawer body 2 using the pressure difference; when the piston plate 304 is compressing, the first baffle 306 is closed to enhance the compression effect and accelerate oxygen separation. This coordinated control mode can ensure that the second area continuously receives fresh gas to be separated, and can also significantly improve the oxygen separation efficiency by periodically blocking external gas, increasing the collision frequency of gas molecules and the pressure difference between the inside and outside of the membrane during compression. This allows for more precise control of the oxygen content in the drawer body 2 under ice-temperature conditions, thus extending the food preservation time.

[0060] Considering the wet membrane 308 scheme of the oxygen reduction component 3, in the ice-temperature oxygen reduction drawer provided in this application embodiment, a wet membrane 308 is provided on the preset side of the third region. The wet membrane 308 is connected to a humidification pipe 309, which is used to replenish water to the wet membrane 308. The wet membrane 308 is configured to maintain the escape of moisture under low pressure conditions.

[0061] In this way, the movement of the piston plate 304 reduces the local pressure in the space, causing the moisture in the wet film 308 to escape and humidify the gas, reducing water loss from fruits and vegetables. Specifically, the wet film 308, as a functional component of the third region, receives continuous moisture supply through the humidification pipe 309, maintaining a consistently moist state. When the piston plate 304 is compressed towards the fixed baffle under the drive of the drive motor 8, the space in the third region expands due to the movement of the piston plate 304, and the internal air pressure decreases accordingly, forming a local low-pressure environment. Based on the physical properties of air pressure and liquid evaporation, the low-pressure conditions significantly lower the boiling point of water, causing the moisture held in the wet film 308 to escape rapidly in gaseous form and enter the interior of the third region. When the piston plate 304 resets under the drive of the drive motor 8, the pressure in the third region increases while the pressure in the second region decreases. The second baffle 310, described later, opens to connect the third and second regions. The second region is connected to the internal cavity of the drawer body 2 via the vent 307 on the bottom surface of the component housing 301. The escaping water vapor diffuses along the gas flow path: in the pressure fluctuations caused by the piston plate 304's reset movement, the water vapor first flows into the second region through the vent after the second baffle 310 opens, and then enters the internal cavity of the drawer body 2 through the vent 307 in the second region. During this process, the water vapor is evenly distributed within the storage space of the drawer body 2, increasing the ambient humidity and effectively mitigating moisture loss from fruits and vegetables due to transpiration under cold conditions, thus preventing them from drying out and shrivel.

[0062] Meanwhile, the humidification process of the wet film 308 complements and synergizes with the core function of the oxygen reduction component 3. When the piston plate 304 moves toward the fixed baffle, the second region is compressed to accelerate oxygen separation. At this time, the space of the third region increases and the air pressure decreases, and the moisture in the wet film 308 escapes. When the piston plate 304 returns to its original position, the space of the third region shrinks and the air pressure increases. The water vapor released by the wet film 308 diffuses to the second region with the airflow under the action of the pressure difference (the airflow always flows from high pressure to low pressure). This is exactly the stage where the drawer body 2 exchanges gas with the second region (when the first baffle 306 is open). The water vapor can quickly diffuse to all parts of the drawer body 2 with the fresh gas, realizing the synchronous linkage of "oxygen reduction-air exchange-humidification".

[0063] In addition, the continuous water replenishment of the humidification tube 309 ensures that the wet film 308 will not dry out due to moisture loss, thus maintaining the stability of the humidification function. During the deoxygenation process, the gas continuously carries away moisture as it is extracted. Timely replenishment of water vapor to maintain a high humidity state in the storage environment can reduce water loss from fruits and vegetables, achieving the dual effects of "deoxygenation preservation" and "moisturization and freshness protection".

[0064] Considering the solution of adding a second baffle 310 at the piston plate 304, the ice-temperature-de-oxygen drawer provided in this application embodiment includes a second baffle 310, and the piston plate 304 controls the connection and closure between the third region and the second region through the second baffle 310.

[0065] Thus, the second baffle 310 is used to connect the third region and the second region to facilitate the diffusion of water vapor, as described in the preceding description of the working process.

[0066] Considering the scheme of simultaneously setting up an upper magnetic field and a lower magnetic field in the ice-temperature oxygen-cooling drawer, in the ice-temperature oxygen-cooling drawer provided in this application embodiment, a first electromagnet 6 is installed on the outer top surface of the outer shell 1, and a second electromagnet 7 is installed on the outer bottom surface of the outer shell 1; both the first electromagnet 6 and the second electromagnet 7 are used to drive oxygen in the air to move in the opposite direction to carbon dioxide and nitrogen; an upper magnetic field is formed on the outer top surface of the outer shell 1 to accelerate the movement of oxygen in the air towards the inner top surface of the outer shell 1; a lower magnetic field is formed on the outer bottom surface of the outer shell 1 to drive the air to be evenly distributed inside the outer shell 1; the first electromagnet 6 and the second electromagnet 7 are configured to be energized at different times.

[0067] In this way, by utilizing the magnetic properties of gases (paramagnetism of oxygen, and diamagnetic properties of carbon dioxide and nitrogen), a two-way magnetic field (including an upper magnetic field and a lower magnetic field) is set up. The upper magnetic field causes oxygen to move in the opposite direction to carbon dioxide and nitrogen, accelerating the oxygen separation effect; the lower magnetic field evenly distributes the gas, ensuring the stability of the gas in the storage environment after oxygen reduction.

[0068] Specifically, the first electromagnet 6 and the second electromagnet 7 form a complementary bidirectional magnetic field through time-sharing energization, which, combined with the magnetic properties of the gas, enhances the oxygen reduction effect and ensures stable gas distribution. When the first electromagnet 6 is energized, an upper magnetic field is formed on the outer top surface of the outer shell 1. Since oxygen is paramagnetic, it will move towards the area with high magnetic field strength, while carbon dioxide and nitrogen are diamagnetic and will move towards the area with low magnetic field strength. At this time, oxygen is more likely to accumulate in the area close to the oxygen reduction component 3 (located on the inner top surface of the outer shell 1), which facilitates the rapid adsorption of oxygen by the hollow fiber membrane 302 in the second region, accelerates the separation of oxygen from other gases, and improves the oxygen capture efficiency of the oxygen reduction component 3.

[0069] Furthermore, when the second electromagnet 7 is energized, a lower magnetic field is formed on the bottom surface of the outer casing 1. The lower magnetic field acts on the gas inside the drawer body 2 through magnetic force, causing the oxygen that moves paramagnetically to the top when the upper magnetic field is opened and the carbon dioxide and nitrogen that move countermagnetically to the bottom to diffuse evenly in opposite directions, avoiding excessively high or low local gas concentrations, ensuring that the gas composition in each area inside the drawer body 2 tends to be consistent, and providing a stable storage environment for food.

[0070] Furthermore, because the first electromagnet 6 and the second electromagnet 7 are energized at different times, they work in synergy: during the deoxygenation stage, the first electromagnet 6 generates an upper magnetic field, accelerating the dissolution and separation of oxygen; during the stabilization stage after deoxygenation, the second electromagnet 7 generates a lower magnetic field, ensuring uniform gas distribution. This time-sharing operating mode not only utilizes the magnetic properties of the gas to enhance the oxygen separation effect but also ensures the stability of the gas environment in the storage area after deoxygenation, further improving the reliability of food preservation.

[0071] Considering the overall structural scheme of the ice-temperature oxygen-reducing drawer, the ice-temperature oxygen-reducing drawer provided in this application embodiment includes a drawer body 2, which is configured to be inserted into the outer shell 1, and the oxygen-reducing component 3 is used to remove oxygen from the air inside the drawer body 2 and the outer shell 1.

[0072] This can improve the shelf life of items in drawer body 2.

[0073] Considering the formation scheme of the air intake component, in the ice-temperature oxygen-reducing drawer provided in this application embodiment, the air intake component includes a pump body 4 and an air extraction pipe 305. One end of the air extraction pipe 305 is connected to the pump body 4, and the other end of the air extraction pipe 305 is connected to the first area. The pump body 4 is also connected to an exhaust pipe 5.

[0074] In this way, one end of the suction pipe 305 of the suction assembly is connected to the first region, and the other end is connected to the pump body 4, which in turn is connected to the exhaust pipe 5, forming a gas discharge channel from the first region to the outside atmosphere.

[0075] Furthermore, when the piston plate 304 is compressed, it accelerates the flow of oxygen to the first region. Simultaneously, the pump body 4 draws air through the suction pipe 305, rapidly reducing the air pressure in the first region and further enhancing the pressure difference inside and outside the hollow fiber membrane 302, thus promoting oxygen separation efficiency. When the piston plate 304 resets, the pump body 4 continues to work, ensuring that the oxygen in the first region is completely discharged, making room for the next oxygen accumulation. Through the orderly connection of the suction pipe 305, the pump body 4, and the exhaust pipe 5, the suction assembly stably exports the oxygen separated by the oxygen reduction assembly 3 to the system, working with other components to maintain a low-oxygen environment inside the drawer body 2, ensuring the food preservation effect.

[0076] Considering the automatic oxygen reduction and cooling scheme of the ice-temperature oxygen reduction component 3, in the ice-temperature oxygen reduction drawer provided in this application embodiment, a sensor component 9 is provided on the inner side wall of the outer shell 1. The sensor component 9 includes a temperature sensor and an oxygen sensor. The temperature sensor is used to detect the temperature inside the drawer body 2 in real time; the oxygen sensor is used to detect the oxygen concentration inside the drawer body 2 in real time.

[0077] For example, when the detected temperature is greater than the preset temperature value, the cooling component starts and cools the drawer body 2; when the detected temperature is equal to the preset temperature value, the cooling component stops working; when the detected oxygen concentration is greater than or equal to the preset concentration value, the oxygen reduction component 3 is controlled to reduce oxygen; when the detected oxygen concentration is less than the preset concentration value, the oxygen reduction component 3 is controlled to stop working.

[0078] In this way, the temperature sensor and oxygen sensor on the inner wall of the outer casing 1 continuously monitor the temperature and oxygen concentration inside the drawer body 2. The temperature sensor compares the real-time temperature data with the preset temperature value (ice temperature threshold): when the detected temperature is higher than or equal to the preset value, the refrigeration component automatically starts, cooling the drawer body 2 through refrigerant circulation or heat exchange until the temperature drops to the preset value, at which point the refrigeration component stops working, ensuring that the food is in a stable ice-temperature storage environment. The oxygen sensor tracks the changes in oxygen concentration inside the drawer body 2 in real time: when the concentration is higher than or equal to the preset value, the sensor triggers a control signal, and the oxygen reduction component 3 enters the working state—the suction component starts to extract air, the piston plate 304 reciprocates to enhance the oxygen separation efficiency of the hollow fiber membrane 302, and the first electromagnet 6 simultaneously generates an upper magnetic field to accelerate oxygen accumulation, so that the separated oxygen is discharged through the first area, the suction pipe 305, the pump body 4, and the exhaust pipe 5; when the oxygen concentration drops to the preset value, the oxygen reduction component 3 stops operating to avoid excessive oxygen reduction affecting the metabolic balance of some foods.

[0079] This application provides another refrigerator, including the above-mentioned ice-temperature-reducing and oxygen-lowering drawer, which can achieve all the technical effects of the above-mentioned ice-temperature-reducing and oxygen-lowering drawer, and will not be described in detail here.

[0080] The refrigerator control method of the refrigerator application in this application includes: controlling the motor to start so that the piston plate reciprocates in the oxygen reduction assembly; controlling the opening and closing of the first baffle so that the hollow fiber membrane can dissolve and separate the oxygen in the ice-temperature oxygen reduction drawer; when the detected oxygen concentration is greater than a preset concentration value, controlling the pump in the oxygen reduction assembly to start to reduce oxygen; when the detected oxygen concentration is less than or equal to the preset concentration value, controlling the pump in the oxygen reduction assembly to stop working.

[0081] Thus, the activation status of the refrigeration component is determined based on the detected temperature of the ice-temperature oxygen-reducing drawer; the oxygen reduction status of the oxygen reduction component 3 is determined based on the detected oxygen concentration in the ice-temperature oxygen-reducing drawer, wherein the oxygen reduction status includes: activation of the piston plate 304, opening and closing of the first baffle 306, and opening and closing of the pump body 4.

[0082] It should be noted that determining the activation status of the refrigeration components based on the detected ice-temperature deoxygenation drawer temperature can precisely maintain the ice-temperature environment inside the drawer. The refrigeration components activate when the temperature is higher than or equal to a preset value and stop when it falls below the preset value, avoiding the problem of excessive temperature fluctuations in traditional refrigeration methods. This precise temperature control not only maximizes the preservation of the nutritional components and taste of food but also reduces energy waste caused by over-cooling, improving the refrigerator's energy efficiency. The oxygen deoxygenation component 3's deoxygenation status is determined based on oxygen concentration, including precise control of the piston plate 304, the first baffle 306, and the pump body 4, achieving intelligent and efficient deoxygenation. When the oxygen concentration is higher than or equal to the preset value, the piston plate 304 reciprocates to increase the pressure difference inside and outside the hollow fiber membrane 302, the first baffle 306 is opened to introduce the gas to be treated, and the pump body 4 is activated to discharge the separated oxygen. These three actions work together to accelerate oxygen separation and discharge, significantly improving deoxygenation efficiency. When the oxygen concentration reaches the preset value, the operation of the relevant components is stopped in time to avoid ineffective energy consumption and prevent excessively low oxygen concentration inside the drawer from affecting the normal metabolism of some foods.

[0083] In summary, the ice-temperature environment provides the basic low-temperature conditions for food preservation, while the oxygen-reducing component 3 further reduces the oxygen concentration under this environment. The combination of these two factors significantly extends the food preservation time. Simultaneously, through precise control of components such as the first baffle 306 and the piston plate 304, efficient gas flow and separation during the oxygen reduction process are ensured, while gas disturbance within the drawer is prevented, ensuring the stability of the food storage environment and improving the overall preservation reliability and user experience of the refrigerator.

[0084] When the oxygen concentration is greater than or equal to the preset value, the oxygen reduction component 3 is activated to intervene promptly and quickly reduce the oxygen concentration, preventing food oxidation and spoilage caused by excessive concentration. When the concentration reaches the preset value, oxygen reduction immediately stops, precisely controlling the endpoint and preventing excessively low oxygen concentrations—some fruits and vegetables are prone to anaerobic respiration in oxygen-deficient environments, releasing harmful substances such as ethanol, affecting preservation quality. This "start when threshold is exceeded, stop when threshold is reached" logic keeps the oxygen concentration in the drawer consistently within the preset range, further reducing fluctuations and providing a more suitable storage environment for food. When the concentration does not exceed the preset value, the oxygen reduction component 3 is in a stopped state, requiring no energy consumption from the drive motor 8, pump 4, electromagnet, and other components, reducing ineffective energy consumption compared to continuous oxygen reduction mode. Simultaneously, in conjunction with the "open intake - closed compression exhaust" cycle, it concentrates its efforts during the oxygen reduction phase and completely rests during non-oxygen reduction phases, forming an energy-saving closed loop of "high-efficiency operation - precise rest," significantly improving the refrigerator's energy utilization efficiency. For fruits and vegetables that require a low-oxygen environment, a preset concentration value can be set within a range, which is maintained by activating and deactivating the oxygen-reducing component 3, thus slowing down chlorophyll decomposition and vitamin loss. For meats that are sensitive to oxygen, a preset concentration value can be set within another range, inhibiting bacterial growth and fat oxidation. This precise control based on concentration feedback extends the shelf life of various foods on average compared to traditional refrigerators, while maintaining the original color, taste, and nutritional components of the food, significantly improving the user's storage experience.

[0085] When the detected temperature is higher than the preset temperature value, the cooling component starts and cools the drawer body 2; when the detected temperature is equal to the preset temperature value, the cooling component stops working.

[0086] In this way, when the temperature inside the drawer rises due to heat dissipation from the environment or the respiration of food and exceeds the preset ice-temperature value, the refrigeration components immediately start, quickly lowering the temperature to the target range to prevent high temperatures from accelerating food spoilage. When the temperature reaches the preset value, refrigeration stops promptly to prevent excessively low temperatures – some fruits and vegetables are prone to cell damage near freezing points, affecting taste and quality. This "start-up when over-temperature, stop when reaching the target" logic keeps the drawer temperature stable within the preset ice-temperature range, providing a stable low-temperature foundation for food preservation. When the temperature does not exceed the preset value, the refrigeration components are in a dormant state, requiring no energy from the compressor, fan, or other components, reducing unnecessary energy consumption compared to continuous refrigeration mode. Simultaneously, considering the reduced respiration of food in ice-temperature environments, the refrigeration components have a longer start-stop cycle, further reducing energy consumption. This, combined with the "on-demand start-stop" logic of the oxygen reduction component 3, together constructs a low-energy-consumption operating system for the refrigerator.

[0087] Low temperatures reduce the velocity of gas molecules, making the dissolution and separation of oxygen in the hollow fiber membrane 302 more stable and reducing fluctuations in separation efficiency caused by temperature fluctuations. At the same time, the ice-temperature environment itself can inhibit the growth of microorganisms and the activity of food enzymes, forming a dual preservation barrier of "low temperature + low oxygen" together with the oxygen reduction function. For example, under the synergistic effect of ice temperature and low oxygen, the respiration rate of fruits and vegetables can be reduced, the water loss rate can be reduced, and the preservation period can be extended compared to a single low temperature or a single oxygen reduction environment.

[0088] This temperature control scheme simplifies the control logic of the refrigeration system, eliminating the need for complex step-by-step adjustments. Precise temperature control is achieved simply by "starting when the threshold is exceeded and stopping when the threshold is reached," reducing system control complexity and the probability of failure. Simultaneously, users can flexibly adjust preset values ​​according to the optimal storage temperature for different foods, enhancing the refrigerator's versatility and further improving the user experience.

[0089] Considering the oxygen intake scheme of the ice-temperature oxygen-reducing drawer, before the step of controlling the motor to start so that the piston plate reciprocates in the oxygen-reducing assembly, the following steps are included: controlling the first electromagnet 6 to be energized so that oxygen is separated into the hollow fiber membrane 302.

[0090] In this way, when the first electromagnet 6 is energized, it generates an upper magnetic field. Utilizing the paramagnetism of oxygen and the diamagnetic properties of carbon dioxide and nitrogen, it drives oxygen to move directionally towards the hollow fiber membrane 302 region of the oxygen reduction component 3, making the oxygen more concentrated and closer to the hollow fiber membrane 302. Simultaneously, the first baffle 306 opens under the action of the internal and external pressure difference, allowing the gas in the drawer body 2 to smoothly enter the second region. At this time, the oxygen aggregation effect under the action of the magnetic field and the gas inflow work synergistically, significantly increasing the contact probability between the hollow fiber membrane 302 and oxygen, accelerating the process of oxygen being dissolved and absorbed by the membrane. Compared with the absorption method that relies solely on natural diffusion, this significantly improves the efficiency of the initial oxygen absorption stage, laying a highly efficient foundation for subsequent oxygen separation and discharge. When the oxygen concentration is higher than or equal to a preset value, the synchronous activation of the magnetic field guidance and channel opening ensures that a large amount of oxygen can be quickly captured in the early stage of oxygen reduction, avoiding the problem of excessively high local concentrations caused by disordered diffusion of oxygen in the drawer. Simultaneously, the reciprocating motion of the piston plate 304 and the suction effect of the pump body 4 form a complete closed loop of "directional aggregation - efficient suction - rapid discharge," significantly increasing the amount of oxygen processed by the deoxygenation component 3 per unit time. This allows the oxygen concentration in the drawer to drop to the preset value more quickly, shortening the deoxygenation adjustment cycle, reducing the ineffective operating time of the component, and further reducing energy consumption. The deep synergy between the magnetic field, gas flow, and membrane separation functions not only improves the efficiency of a single deoxygenation process but also allows the oxygen concentration in the drawer to decrease more smoothly during the adjustment process. This avoids fluctuations in deoxygenation caused by uneven oxygen distribution, further ensuring the stability of the food storage environment, extending the shelf life, and making the refrigerator's intelligent control more precise and efficient.

[0091] Considering the oxygen concentration monitoring scheme of the ice-temperature oxygen-reducing drawer, after controlling the first electromagnet 6 to be energized so that oxygen is drawn into the hollow fiber membrane 302, the following steps are included:

[0092] The first baffle 306 is closed by controlling the differential pressure, and the pump body 4 and motor 8 are started so that the oxygen reduction component 3 can carry out the oxygen reduction process.

[0093] Repeat the previous step, and monitor the ambient oxygen concentration in real time during the process.

[0094] In this way, after the first baffle 306 is automatically closed by the pressure difference, the second area forms a relatively closed space. At this time, the motor 8 is started to drive the piston plate 304 to reciprocate, which can maximize the compression of the space outside the hollow fiber membrane 302, significantly increase the pressure difference between the inside and outside of the membrane, and, together with the pump body 4 to pump air from the first area, can quickly discharge the oxygen adsorbed in the hollow fiber membrane 302 to the atmosphere, preventing the unseparated gas from flowing back to the drawer body 2 through the air hole 307, and ensuring that the oxygen discharge in a single oxygen reduction process is maximized.

[0095] To further understand the ice-temperature-reducing and oxygen-lowering drawer and refrigerator solutions of this application, the following implementation scheme is used as an example:

[0096] This application provides an ice-temperature deoxygenation drawer and refrigerator. The ice-temperature deoxygenation drawer can be understood as a fresh-keeping drawer body 2. The fresh-keeping drawer body 2 is set in the refrigerator compartment and includes an outer shell 1, a drawer body 2, an oxygen-degrading component 3, a pump body 4, an electromagnet, a motor 8, and a sensor component 9. The oxygen-degrading component 3 is set inside the outer shell 1 and is composed of a component shell 301, a hollow fiber membrane 302, a drive shaft 303, a piston plate 304, an air extraction pipe 305, a first baffle 306, an air hole 307, a wet film 308, a humidification pipe 309, and a second baffle 310. The component housing 301 is a sealed structure. The first baffle 306 can be opened and closed. Under normal conditions, it remains closed due to gravity. When the internal pressure of the deoxygenation component 3 decreases, it opens due to the pressure difference between the inside and outside. When it opens, the vent 307 connects the deoxygenation component 3 and the drawer body 2, allowing gas to circulate. The second baffle 310 can also be opened and closed. When the first baffle 306 moves forward and compresses the air in the second region, the pressure in the second region is greater than that in the third region, so the second baffle 310 remains closed. When the first baffle 306 moves backward to reset, the space in the second region rapidly increases and the pressure decreases. The third region is the opposite; the pressure in the second region is less than that in the third region, so the second baffle 310 opens. The humidification pipe 309 can replenish water to the wet film 308. Under low pressure conditions, the moisture in the wet film 308 will escape. The pump body 4 and the motor 8 are located above the housing 1. When the pump body 4 is working, it deoxygenates the fresh food drawer body 2. When the motor 8 is working, it drives the transmission shaft 303 and the piston plate 304 to move through the gear 10.

[0097] The electromagnet consists of two parts: a first electromagnet 6 located above the outer casing 1 and a second electromagnet 7 located below the outer casing 1. The two electromagnets are not activated simultaneously. When the first electromagnet 6 is energized, the magnetic field above the drawer body 2 is strongest, causing oxygen to move towards the top of the drawer body 2 due to paramagnetism, while carbon dioxide and nitrogen move towards the bottom of the drawer body 2 due to diamagnetic properties. When the second electromagnet 7 is energized, the magnetic field below the drawer body 2 is strongest, causing oxygen to move towards the bottom of the drawer body 2 due to paramagnetism, while carbon dioxide and nitrogen move towards the top of the drawer body 2 due to diamagnetic properties. The sensor assembly 9, located inside the outer casing 1, consists of a temperature sensor and an oxygen sensor, used to detect the temperature and oxygen concentration inside the drawer body 2 in real time. The temperature sensor monitors the ambient temperature T in real time. When the temperature exceeds a preset value T0, the cooling assembly activates to cool the drawer body 2; when the temperature reaches the preset value T0, the cooling assembly stops working. The oxygen sensor monitors the ambient oxygen concentration c in real time. When the oxygen concentration exceeds a preset value c0, the pump 4 operates to reduce oxygen in the preservation drawer body 2; when the oxygen concentration reaches the preset value c0, the pump 4 stops working.

[0098] Consider the specific implementation plan of this plan:

[0099] Electromagnetic field activation: The user places fruits and vegetables into the fresh-keeping drawer body 2 and closes it. The refrigeration component activates to cool the drawer body 2. The sensor component 9 monitors the ambient temperature T in real time. When the temperature reaches the preset value T0 (-2 to 0℃), the refrigeration component stops working. Simultaneously, the first electromagnet 6 is energized, causing oxygen to move towards the top of the drawer body 2, and carbon dioxide and nitrogen to move towards the bottom. The first baffle 306 opens, and the gas enters the oxygen-reducing component 3 through the vent 307.

[0100] Rapid oxygen reduction: When the first electromagnet 6 is energized for a preset time t1 (3-5 min), the pump body 4 operates to reduce oxygen in the food storage drawer body 2. At this time, the first baffle 306 remains closed, and the pump body 4 operates to extract air from the first area through the suction pipe 305. The first area is connected to the hollow fiber membrane 302 at end A (end B is closed), causing the air pressure inside the hollow fiber membrane 302 in the second area to drop. Due to the pressure difference between the inside and outside of the membrane and the membrane polarity, oxygen molecules enter the membrane and are extracted. At the same time, the motor 8 operates to control the connected gear 10 to rotate, thereby controlling the transmission shaft 303 to push the piston plate 304 (moving towards end A), thereby compressing and pressurizing the gas in the second area, increasing the pressure difference between the inside and outside of the membrane, and accelerating the separation of oxygen molecules. At this time, the piston plate 304 expands the dense hollow fiber membrane 302, allowing the gas to enter the center of the tubular membrane bundle simultaneously for gas exchange, increasing the contact area between the membrane and the gas. During this process, the pressure inside the oxygen reduction component 3 is greater than the pressure outside the component. Under the influence of pressure and gravity, the first baffle 306 remains closed. Simultaneously, the gas in the second region is compressed, increasing its pressure, while the space in the third region becomes atmospheric, decreasing its pressure. The pressure in the second region becomes greater than that in the third region, and the second baffle 310 also remains closed under pressure. At the same time, the space in the third region becomes atmospheric, decreasing its pressure, and moisture from the wet film 308 escapes, filling the third region. The duration of this process is a preset value t2 (5–8 seconds).

[0101] Humidification and ventilation: Pump 4 remains operational, and the motor 8 controls the gear 10 connected to it to rotate in the opposite direction, thereby controlling the transmission shaft 303 to reset the piston plate 304 (moving towards end B). The hollow fiber membrane 302 is straightened again, and the gas in the center of the tubular membrane bundle is squeezed out. Simultaneously, when the piston plate 304 resets, the space in the second region rapidly increases, and the pressure decreases. The external pressure of the oxygen reduction component 3 is greater than the internal pressure, and the baffle opens upwards under the external pressure. The gas in the drawer body 2 quickly enters the second region of the oxygen reduction component 3 through the vent 307 for ventilation. At the same time, when the piston plate 304 resets, the space in the second region rapidly increases, and the pressure decreases. The space in the third region is compressed, and the pressure rises. The pressure in the second region is less than that in the third region, and the second baffle 310 opens. Water vapor in the third region first enters the second region, and then enters the drawer body 2 through the vent 307 to humidify the space. The duration of the above process is a preset value t3 (3-5 seconds).

[0102] Fruit and vegetable temporary storage: Repeat the above steps of rapid oxygen reduction and humidification ventilation. Sensor component 9 monitors the oxygen concentration c in real time. When the oxygen concentration reaches the preset value c0 (10-12%), pump 4 stops working. Motor 8 controls piston plate 304 to reset to the initial position. First electromagnet 6 is de-energized, while second electromagnet 7 is energized. Oxygen moves to the bottom of drawer body 2, while carbon dioxide and nitrogen move to the top of drawer body 2, restoring the gas concentration in drawer body 2 to a uniform state. The energizing duration is the preset value t4 (5-10 min).

[0103] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0104] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0105] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A drawer for cooling and reducing oxygen, characterized in that, include: shell; An oxygen reduction component is installed on the inner top surface of the housing. The oxygen reduction component includes a first region, a second region, and a third region continuously arranged along a preset direction. Multiple hollow fiber membranes are arranged in the second region along the same direction. A fixed baffle is provided between the first region and the second region. A piston plate is provided between the second region and the third region. The piston plate is connected to a preset side of the third region via a drive shaft. The second region is configured to communicate with the internal cavity of the housing under preset conditions. The hollow fiber membranes are used to dissolve and separate oxygen. One end of each hollow fiber membrane passes through different preset positions of the fixed baffle and communicates with the first region, while the other end of each hollow fiber membrane is in a closed state and is connected to different preset positions of the piston plate. An air intake assembly is installed on the outer top surface of the housing and is connected to the first region for extracting internal gas from the first region. The piston plate is configured to push the other end of the hollow fiber membrane toward the fixed baffle under the drive of the drive motor, so as to compress the air between the outside of the hollow fiber membrane and the second region, thereby increasing the gas pressure difference between the inside and outside of the hollow fiber membrane, so that the oxygen outside the hollow fiber membrane can quickly diffuse and flow into the inside of the hollow fiber membrane, flow into the first region, and be discharged to the atmosphere by the air intake assembly.

2. The ice-temperature-reducing and oxygen-lowering drawer according to claim 1, characterized in that, The oxygen reduction component includes a component shell, and the internal cavity of the component shell forms a first region, a second region, and a third region. The bottom surface of the component shell has air holes that communicate with the second region, and the internal cavity of the shell communicates with the second region through the air holes.

3. The ice-temperature deoxygenation drawer according to claim 2, characterized in that, A first baffle is provided between the vent and the component housing. The first baffle is constructed as a louver structure and its opening and closing are controlled by the pressure difference between the second region and the internal cavity, thereby controlling the communication state between the vent and the second region.

4. The ice-temperature-reducing and oxygen-lowering drawer according to claim 2, characterized in that, A wet film is provided on a preset side of the third region. The wet film is connected to a humidification pipe, which is used to replenish water to the wet film. The wet film is configured to retain moisture escape under low pressure conditions.

5. The ice-temperature-reducing and oxygen-lowering drawer according to claim 1, characterized in that, The ice-temperature oxygen-reducing drawer includes a second baffle, and the piston plate controls the connection and closure between the third region and the second region through the second baffle.

6. The ice-temperature-reducing and oxygen-lowering drawer according to claim 1, characterized in that, A first electromagnet is installed on the top surface of the outer shell, and a second electromagnet is installed on the bottom surface of the outer shell; both the first and second electromagnets are used to drive the oxygen in the air to move in the opposite direction to the carbon dioxide and nitrogen; an upper magnetic field is formed on the top surface of the outer shell to accelerate the oxygen in the air to move towards the inner top surface of the outer shell. A lower magnetic field is formed on the outer bottom surface of the outer shell to drive air to be evenly distributed inside the shell; The first electromagnet and the second electromagnet are configured to be energized at different times.

7. The ice-temperature-reducing and oxygen-lowering drawer according to claim 1, characterized in that, The ice-temperature oxygen-reducing drawer includes a drawer body configured to be inserted into the outer shell, and the oxygen-reducing component is used to remove oxygen from the air inside the drawer body and the outer shell.

8. The ice-temperature-reducing and oxygen-lowering drawer according to claim 2, characterized in that, The air intake assembly includes a pump body and an air extraction pipe. One end of the air extraction pipe is connected to the pump body, and the other end of the air extraction pipe is connected to the first region. The pump body is also connected to an exhaust pipe.

9. The ice-temperature-reducing and oxygen-lowering drawer according to claim 1, characterized in that, A sensor assembly is provided on the inner wall of the outer casing. The sensor assembly includes a temperature sensor and an oxygen sensor. The temperature sensor is used to detect the temperature inside the drawer body in real time. The oxygen sensor is used to detect the oxygen concentration inside the drawer body in real time.

10. A refrigerator, characterized in that, Includes the ice-temperature oxygen-reducing drawer as described in any one of claims 1-9.

Images