Deoxidizing module and refrigerator

Abstract

The invention provides a deoxygenization module and a refrigerator, the deoxygenization module comprises a box body, the bottom surface of the box body is provided with an air inlet, and the air inlet is formed in one side of the box body; an extraction opening and a first air outlet are formed in the side surface of the box body and are formed in the other side of the box body; the extraction opening is communicated with the air inlet end of the vacuum pump, and the air outlet end of the vacuum pump is communicated with the outside of the to-be-deoxygenated area; a first fixed fence and a second fixed fence are arranged along the width direction of the box body, and the first fixed fence and the second fixed fence are arranged in the box body; the first fixed fence and the second fixed fence are provided with airflow channels; the hollow fiber membrane group is arranged between the first fixed fence and the second fixed fence; the cover body is clamped with the box body; when the cover body is clamped to the box body, a containing cavity used for containing the hollow fiber membrane set is formed, so that the problems that according to an existing membrane separation technology, the oxygen removal rate is low, oxygen in the fresh-keeping cabin is difficult to reduce to the value needed by fruit and vegetable controlled atmosphere fresh-keeping, and the requirement of a user for fruit and vegetable long-period fresh-keeping is difficult to meet are solved.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, and in particular to a deoxygenation module and a refrigerator. Background Art

[0002] With the development of society and the improvement of living standards, users have put forward the requirement of long-term freshness preservation in refrigerators. The preservation of fruits and vegetables is the core function of refrigerators. The industry often uses temperature control, humidity control, atmosphere control, light and sterilization technology to extend the shelf life of fruits and vegetables. Among them, atmosphere control technology can inhibit the physiological metabolism of fruits and vegetables and significantly extend the shelf life of fruits and vegetables, which has attracted much attention in the industry.

[0003] At present, the main gas conditioning technology suitable for refrigerators is membrane separation technology, which utilizes the characteristics of oxygen and nitrogen having different migration rates in specific membrane materials. When nitrogen and oxygen come into contact with the membrane surface, oxygen molecules can easily pass through the membrane material due to their relatively fast migration rate in the membrane; while nitrogen molecules will encounter more obstacles when passing through the membrane material due to their slow migration rate. Through this differential migration process, membrane separation technology can effectively separate nitrogen and oxygen.

[0004] Although the membrane separation and controlled atmosphere preservation technology suitable for refrigerators can significantly extend the shelf life of fruits and vegetables, the industry currently mostly uses flat membranes. The flat membrane has a small contact area with the air in the refrigerator's fresh-keeping compartment, and the deoxygenation rate is slow; in addition, during the operation of the flat membrane, high-nitrogen and low-oxygen gases are enriched on the surface of the flat membrane, hindering the separation of low-nitrogen and high-oxygen gases in the fresh-keeping compartment, resulting in low separation efficiency of the flat membrane. It is difficult to reduce the oxygen in the fresh-keeping compartment to the required value for controlled atmosphere preservation of fruits and vegetables, and it is difficult to meet users' needs for long-term preservation of fruits and vegetables. Summary of the invention

[0005] The present application provides a deoxygenation module and a refrigerator to solve the technical problem that the existing membrane separation technology has a slow deoxygenation rate, the oxygen in the fresh-keeping compartment is difficult to reduce to the value required for atmosphere-controlled preservation of fruits and vegetables, and it is difficult to meet the user's demand for long-term preservation of fruits and vegetables.

[0006] The first aspect of the present application provides a deoxygenation module, comprising:

[0007] A box body, wherein the bottom surface of the box body is provided with an air inlet, which is provided on one side of the box body; the side surface of the box body is provided with an air suction port and a first air outlet, which are provided on the other side of the box body; the air suction port is connected to the air inlet end of the vacuum pump, and the air outlet end of the vacuum pump is connected to the outside of the area to be deoxygenated; a first fixed bar and a second fixed bar are provided along the width direction of the box body, and the first fixed bar and the second fixed bar are provided in the box body; the first fixed bar and the second fixed bar are provided with an air flow channel;

[0008] A hollow fiber membrane group, wherein the hollow fiber membrane group is disposed between the first fixed column and the second fixed column; the hollow fiber membrane group is configured with a plurality of hollow fiber tubes, and the flow rate of oxygen in the hollow fiber tubes is greater than the flow rate of nitrogen;

[0009] A cover body is snap-connected with the box body; when the cover body is snap-connected with the box body, a receiving cavity for receiving the hollow fiber membrane group is formed.

[0010] In some embodiments, the deoxygenation module further comprises:

[0011] A fan, wherein the air inlet end of the fan is connected to the air inlet, and the air outlet end of the fan faces the hollow fiber membrane group.

[0012] In some embodiments, a second air outlet is disposed on the cover body; a projection of the second air outlet toward the hollow fiber membrane group completely covers the hollow fiber membrane group.

[0013] In some embodiments, the deoxygenation module further comprises:

[0014] An air extraction pipe, one end of which is connected to an end of the hollow fiber tube close to the air extraction port; and the other end of the air extraction pipe is connected to the air extraction port.

[0015] In some embodiments, a gap is provided between the hollow fiber membrane group and the cover body and the box body.

[0016] In some embodiments, the hollow fiber tube is disposed between the first fixed column and the second fixed column along the length direction of the box body; and the distance between adjacent hollow fiber tubes is a preset distance.

[0017] In some embodiments, a clamping device is provided along the width direction of the first fixing bar and the second fixing bar; the clamping device is relatively provided on both sides of the first fixing bar and the second fixing bar;

[0018] The box body is provided with a clamping groove along the height direction, and the clamping groove is relatively arranged on two sides of the box body;

[0019] Wherein, the first fixing bar or the second fixing bar is clamped into the box body by the clamping device being clamped into the clamping groove.

[0020] In some embodiments, the deoxygenation module further comprises:

[0021] A gas detector, which is disposed in the area to be deoxygenated and is configured to obtain the oxygen concentration in the area to be deoxygenated;

[0022] A controller, the controller is connected to the gas detector and the blower, and is configured as follows:

[0023] According to the oxygen concentration in the area to be deoxygenated, the target operating power of the fan is determined and the fan is controlled to operate according to the target operating power.

[0024] In some embodiments, the target operating power includes: a first operating power, a second operating power, and a third operating power; the first operating power is less than the second operating power, and the second operating power is less than the third operating power;

[0025] The controller is further configured to:

[0026] If the oxygen concentration in the area to be deoxygenated is less than the first concentration, controlling the fan to be turned off;

[0027] If the oxygen concentration in the area to be deoxygenated is greater than or equal to the first concentration and less than the second concentration, controlling the fan to operate at the first operating power;

[0028] If the oxygen concentration in the area to be deoxygenated is greater than or equal to the second concentration and less than the third concentration, controlling the fan to operate at the second operating power;

[0029] If the oxygen concentration in the area to be deoxygenated is greater than or equal to the third concentration, controlling the fan to operate at the third operating power;

[0030] The first concentration is lower than the second concentration, and the second concentration is lower than the third concentration.

[0031] A second aspect of the present application provides a refrigerator, comprising:

[0032] A deoxygenation module as described in any one of the first aspects above.

[0033] The present application provides a deoxygenation module and a refrigerator, the deoxygenation module comprising: a box body, the bottom surface of the box body is provided with an air inlet, which is arranged on one side of the box body; the side surface of the box body is provided with an air suction port and a first air outlet, which are arranged on the other side of the box body; the air suction port is connected to the air inlet end of a vacuum pump, and the air outlet end of the vacuum pump is connected to the outside of the area to be deoxygenated; a first fixed bar and a second fixed bar are provided along the width direction of the box body, the first fixed bar and the second fixed bar are arranged in the box body; the first fixed bar and the second fixed bar are provided with an air flow channel; a hollow fiber membrane group, the The hollow fiber membrane group is arranged between the first fixed column and the second fixed column; the hollow fiber membrane group is configured with a plurality of hollow fiber tubes, the flow rate of oxygen in the hollow fiber tubes is greater than the flow rate of nitrogen; a cover body, the cover body is snap-connected with the box body; when the cover body is snap-connected to the box body, a accommodating cavity for accommodating the hollow fiber membrane group is formed, so as to improve the deoxygenation rate of membrane separation technology, avoid the enrichment of high nitrogen gas on the surface of the hollow fiber membrane, hinder the separation of other gases on the surface of the hollow fiber membrane, reduce the oxygen in the fresh-keeping cabin to the required value for atmosphere-controlled preservation of fruits and vegetables, and meet the user's demand for long-term preservation of fruits and vegetables. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0035] Figure 1 This is a first structural schematic diagram of the deoxygenation module in this application;

[0036] Figure 2 This is a second structural schematic diagram of the deoxygenation module in this application;

[0037] Figure 3 It is a schematic diagram of the structure of the air extraction pipe in this application;

[0038] Figure 4 It is a schematic diagram of the structure of the hollow fiber membrane group in this application.

[0039] Description of reference numerals:

[0040] 1-box body; 11-air inlet; 12-exhaust port; 13-first air outlet; 14-first fixed column; 15-second fixed column; 2-hollow fiber membrane group; 21-hollow fiber tube; 3-cover body; 31-second air outlet; 4-fan; 5-exhaust pipe. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0042] Since in some technologies, the deoxygenation rate of membrane separation technology is slow, it is difficult to reduce the oxygen in the fresh-keeping cabin to the value required for gas-conditioned preservation of fruits and vegetables, and it is difficult to meet the user's demand for long-term preservation of fruits and vegetables. In order to solve this technical problem, the present application provides a deoxygenation module and a refrigerator. The structures of the deoxygenation module and the refrigerator are described below:

[0043] With the development of society and the improvement of living standards, users have put forward the requirement of long-term freshness preservation in refrigerators. The preservation of fruits and vegetables is the core function of refrigerators. The industry often uses temperature control, humidity control, atmosphere control, light and sterilization technologies to extend the shelf life of fruits and vegetables. Among them, atmosphere control technology can inhibit the physiological metabolism of fruits and vegetables and significantly extend the shelf life of fruits and vegetables, thus attracting much attention from the industry. At present, the main atmosphere control technologies in the industry include electrochemical low oxygen technology, molecular sieve high nitrogen technology and membrane separation technology.

[0044] For example, electrochemical low oxygen technology requires users to add water regularly, and moisture will enter the fresh-keeping compartment through the module to cause condensation, which will result in a poor user experience; molecular sieve high nitrogen technology will continuously absorb moisture from the air in the refrigerator, causing the molecular sieve adsorption and desorption capacity to be greatly attenuated, affecting the nitrogen production effect. Membrane separation technology uses the different migration rates of oxygen and nitrogen in the membrane to effectively separate nitrogen and oxygen, creating a low-oxygen environment in the fresh-keeping compartment. However, the industry's membrane separation technology mostly uses a single-layer flat membrane, which has low membrane separation efficiency, and there is no airflow disturbance in the fresh-keeping compartment, which causes high nitrogen gas to accumulate on the surface of the flat membrane, limiting the membrane separation efficiency.

[0045] For example, although the membrane separation and controlled atmosphere preservation technology suitable for refrigerators can significantly extend the shelf life of fruits and vegetables, the industry mostly uses flat membranes, which have a small contact area with the air in the fresh-keeping compartment and a slow deoxygenation rate. In addition, during the operation of the oxygen-enriched membrane component, the unreasonable design of the airflow causes high-nitrogen and low-oxygen gases to accumulate on the membrane surface, hindering the separation of low-nitrogen and high-oxygen gases in the fresh-keeping compartment. Therefore, the industry's membrane separation efficiency is low, and it is difficult to reduce the oxygen in the fresh-keeping compartment to the required value for controlled atmosphere preservation of fruits and vegetables, making it difficult to meet users' needs for long-term preservation of fruits and vegetables.

[0046] like Figure 1 and Figure 2 The figure shows the structure diagram of the deoxygenation module in the present application.

[0047] In view of the above problems, the first aspect of the present application provides a deoxygenation module, comprising:

[0048] The box body 1 is provided with an air inlet 11 on the bottom surface of the box body 1, which is arranged on one side of the box body 1; the side surface of the box body 1 is provided with an air suction port 12 and a first air outlet 13, which are arranged on the other side of the box body 1; the air suction port 12 is connected to the air inlet end of the vacuum pump, and the air outlet end of the vacuum pump is connected to the outside of the area to be deoxygenated; a first fixed bar 14 and a second fixed bar 15 are arranged along the width direction of the box body 1, and the first fixed bar 14 and the second fixed bar 15 are arranged on the Inside the box body 1; the first fixed column 14 and the second fixed column 15 are provided with air flow channels; the box body 1 is placed in the area to be deoxygenated, the air inlet 11 is used to transmit the gas in the area to be deoxygenated to the hollow fiber membrane group 2, the air extraction port 12 is used to extract the oxygen passing through the hollow fiber membrane group 2 to the outside of the area to be deoxygenated through the vacuum pump, and the first air outlet 13 is used to discharge other gases adsorbed on the outside of the hollow fiber membrane group 2 (gases other than oxygen, such as nitrogen, etc.).

[0049] The hollow fiber membrane group 2 is disposed between the first fixed column 14 and the second fixed column 15; the hollow fiber membrane group 2 is configured with a plurality of hollow fiber tubes 21, and the flow rate of oxygen in the hollow fiber tubes 21 is greater than the flow rate of nitrogen.

[0050] Exemplarily, the hollow fiber tube 21 has a selective permeability characteristic, that is, it has different permeabilities and selectivities for different gas molecules; when the gas enters the hollow fiber tube 21, the gas molecules pass through the hollow fiber tube 21 under the action of the pressure difference. Since the solubility and diffusion coefficient of oxygen and nitrogen in the hollow fiber tube 21 are different, the volume of oxygen molecules is smaller than that of nitrogen molecules, so the diffusion rate of oxygen in the hollow fiber tube 21 is greater than that of nitrogen. Due to the fast diffusion rate of oxygen, it preferentially passes through the hollow fiber tube 21, and is discharged through the exhaust port 12 to the vacuum pump for vacuum treatment, so that the oxygen in the area to be deoxygenated is discharged outside the area to be deoxygenated, and the deoxygenation work in the area to be deoxygenated is realized.

[0051] The cover body 3 is snap-fitted to the box body 1 ; when the cover body 3 is snap-fitted to the box body 1 , a receiving cavity for receiving the hollow fiber membrane group 2 is formed.

[0052] The present application provides a deoxygenation module, which realizes rapid deoxygenation in the area to be deoxygenated of the refrigerator. By adopting multiple groups of hollow fiber tubes 21 to form a hollow fiber membrane group 2, the membrane area is maximized in a limited space. The hollow fiber membrane group 2 has a small volume, a large membrane working area, and a greatly increased deoxygenation rate.

[0053] In this embodiment, the deoxygenation module further includes:

[0054] The fan 4 has an air inlet end connected to the air inlet 11, and an air outlet end facing the hollow fiber membrane group 2. The fan 4 draws air from the area to be deoxygenated and delivers it to the surface of the hollow fiber membrane group 2. The fan 4 quickly provides the hollow fiber membrane group 2 with the gas to be treated, and blows away the high nitrogen gas accumulated on the surface of the hollow fiber membrane group 2, so that the hollow fiber membrane group 2 can process other gases.

[0055] Exemplarily, when the gas to be treated passes through the hollow fiber membrane group 2, the oxygen in the gas to be treated will be discharged from the area to be deoxygenated through the vacuum pump through the exhaust port 12, and because the gas inside the hollow fiber tube 21 is extracted, a pressure difference will be formed between the outside of the hollow fiber tube 21 and the inside of the hollow fiber tube 21. Due to the effect of the pressure difference, the gas to be treated cannot enter the inside of the hollow fiber tube 21. Based on the above reasons, the present application, by setting up a fan 4, on the one hand, draws air from the area to be deoxygenated and transports it to the surface of the hollow fiber membrane group 2; on the other hand, the gas adsorbed on the outer surface of the hollow fiber tube 21 due to the pressure difference can be dispersed and blown out from the first air outlet 13 to the area to be deoxygenated, thereby avoiding the problem that the gas to be treated cannot enter the inside of the hollow fiber tube 21 due to the pressure difference.

[0056] In this embodiment, the cover body 3 is provided with a second air outlet 31; the projection of the second air outlet 31 in the direction of the hollow fiber membrane group 2 completely covers the hollow fiber membrane group 2. The gas adsorbed on the outer surface of the hollow fiber tube 21 is blown out of the box body 1 more quickly by additionally providing the second air outlet 31. The projection of the second air outlet 31 in the direction of the hollow fiber membrane group 2 completely covers the hollow fiber membrane group 2, and the outlet of the second air outlet 31 is in a strip shape, and its length and number correspond to the length and number of the hollow fiber tube 21.

[0057] like Figure 3 As shown, it is a schematic diagram of the structure of the air extraction pipe 5 in this application.

[0058] In this embodiment, the deoxygenation module further includes:

[0059] The exhaust pipe 5, one end of which is connected to one end of the hollow fiber tube 21 near the exhaust port 12; the other end of the exhaust pipe 5 is connected to the exhaust port 12. The exhaust pipe 5 is provided to connect the exhaust pipe 5 with the hollow fiber membrane group 2, so that when the vacuum pump is turned on, the oxygen in the hollow fiber membrane group 2 can be more accurately extracted, thereby improving the deoxygenation efficiency of the deoxygenation module.

[0060] In this embodiment, a gap is provided between the hollow fiber membrane group 2, the cover body 3 and the box body 1. In order to improve the efficiency of blowing out the gas adsorbed on the outer surface of the hollow fiber tube 21 from the box body 1, the present application provides a gap between the hollow fiber membrane group 2, the cover body 3 and the box body 1, thereby forming an air flow channel, so that the gas flows in the area where the hollow fiber membrane group 2 is located, so that the gas adsorbed on the outer surface of the hollow fiber tube 21 is blown out from the box body 1 through the fan 4.

[0061] like Figure 4 As shown, it is a schematic structural diagram of the hollow fiber membrane group 2 in the present application.

[0062] In this embodiment, the hollow fiber tube 21 is arranged between the first fixed column 14 and the second fixed column 15 along the length direction of the box body 1; the distance between adjacent hollow fiber tubes 21 is a preset distance. The hollow fiber tube 21 is arranged between the first fixed column 14 and the second fixed column 15 along the length direction of the box body 1, so that the gas in the area to be deoxygenated can enter the hollow fiber tube 21 more accurately, and the length of the hollow fiber tube 21 is made longer by the above method, so that the hollow fiber tube 21 can better separate oxygen and nitrogen. The distance between adjacent hollow fiber tubes 21 is set to a preset distance, so as to form an air flow channel, so that the gas flows in the area where the hollow fiber membrane group 2 is located, so that the gas adsorbed on the outer surface of the hollow fiber tube 21 is blown out of the box body 1 by the fan 4.

[0063] It is worth noting that the preset distance is artificially set and can be set based on artificial experience to improve the deoxygenation efficiency.

[0064] In this embodiment, a clamping device is provided along the width direction of the first fixing bar 14 and the second fixing bar 15; the clamping device is relatively arranged on both sides of the first fixing bar 14 and the second fixing bar 15; a clamping groove is provided in the box body 1 along the height direction, and the clamping groove is relatively arranged on both sides of the box body 1; wherein, the first fixing bar 14 or the second fixing bar 15 is clamped in the box body 1 by the clamping device being clamped in the clamping groove.

[0065] Exemplarily, the hollow fiber tube 21 is clamped between the first fixed column 14 and the second fixed column 15. The present application can realize the clamping of the first fixed column 14 or the second fixed column 15 in the box body 1 by providing a clamping device and a clamping groove. It can be understood that the hollow fiber tube 21 is a consumable item. After the user uses it for a long time, the hollow fiber tube 21 may be damaged. In order to improve the efficiency of subsequent maintenance personnel to replace the hollow fiber tube 21, the first fixed column 14 and the second fixed column 15 can be quickly replaced in the box body 1 through the provision of a clamping device and a clamping groove, that is, the hollow fiber membrane group 2 can be quickly replaced in the box body 1.

[0066] For example, by snapping the first fixing bar 14 or the second fixing bar 15 into the box body 1 , the installation of the hollow fiber membrane group 2 can be completed more quickly, thereby improving the manufacturing efficiency of the manufacturer.

[0067] In this embodiment, the deoxygenation module further includes:

[0068] A gas detector, which is arranged in the area to be deoxygenated and is configured to obtain the oxygen concentration in the area to be deoxygenated; a controller, which is connected to the gas detector and the fan 4 and is configured to: determine the target operating power of the fan 4 according to the oxygen concentration in the area to be deoxygenated and control the fan 4 to operate according to the target operating power.

[0069] Exemplarily, in order to save the power consumption of the fan 4, the present application sets a gas detector in the area to be deoxygenated, and obtains the oxygen concentration in the area to be deoxygenated through the gas detector. After the controller receives the oxygen concentration value in the area to be deoxygenated, the controller determines the target operating power of the fan 4 according to the oxygen concentration value in the area to be deoxygenated, thereby controlling the fan 4 to operate according to the target operating power, so as to save the power consumption of the fan 4.

[0070] Exemplarily, when the fan 4 operates according to the target operating power, it can not only reduce the oxygen concentration in the area to be deoxygenated to the target concentration, but also reduce the operating power of the fan 4 to a preset value, thereby saving the power consumption of the fan 4.

[0071] In some embodiments, the target operating power includes: a first operating power, a second operating power, and a third operating power; the first operating power is less than the second operating power, and the second operating power is less than the third operating power.

[0072] The controller is further configured to:

[0073] If the oxygen concentration in the area to be deoxygenated is less than the first concentration, the fan 4 is controlled to be turned off; if the oxygen concentration in the area to be deoxygenated is greater than or equal to the first concentration and less than the second concentration, the fan 4 is controlled to operate at the first operating power; if the oxygen concentration in the area to be deoxygenated is greater than or equal to the second concentration and less than the third concentration, the fan 4 is controlled to operate at the second operating power; if the oxygen concentration in the area to be deoxygenated is greater than or equal to the third concentration, the fan 4 is controlled to operate at the third operating power; wherein the first concentration is less than the second concentration, and the second concentration is less than the third concentration.

[0074] Specifically, the oxygen concentration in the area to be deoxygenated is obtained by the gas detector. After the controller receives the oxygen concentration value in the area to be deoxygenated, based on the oxygen concentration value in the area to be deoxygenated, if the oxygen concentration in the area to be deoxygenated is less than the first concentration, the fan 4 is controlled to be turned off, that is, the oxygen concentration in the area to be deoxygenated has met the target oxygen concentration of the area to be deoxygenated; if the oxygen concentration in the area to be deoxygenated is greater than or equal to the first concentration and less than the second concentration, the fan 4 is controlled to operate at the first operating power; if the oxygen concentration in the area to be deoxygenated is greater than or equal to the second concentration and less than the third concentration, the fan 4 is controlled to operate at the second operating power; if the oxygen concentration in the area to be deoxygenated is greater than or equal to the third concentration, the fan 4 is controlled to operate at the third operating power.

[0075] It can be understood that as the oxygen concentration in the area to be deoxygenated increases, the operating power of the fan 4 will also increase, thereby blowing more gas into the hollow fiber membrane group 2, and thus discharging the oxygen in the area to be deoxygenated through the exhaust pipe 5 to the outside of the area to be deoxygenated. While satisfying the requirement of reducing the oxygen concentration in the area to be deoxygenated to the target concentration, it is also possible to save the power consumption of the fan 4.

[0076] It is worth noting that the first operating power, the second operating power, the third operating power and the first concentration, the second concentration, and the third concentration are artificially set and can be set according to artificial experience based on improving the deoxygenation efficiency.

[0077] The present application provides a high-efficiency deoxygenation module, which is specially designed to solve the problem of oxygen removal in the area to be deoxygenated in the refrigerator, and realizes the rapid and efficient removal of oxygen in the area. The core of the deoxygenation module is that it uses multiple groups of hollow fiber tubes 21, and the hollow fiber tubes are combined into a hollow fiber membrane group 2. The hollow fiber membrane group 2 not only greatly improves the effective working area of ​​the membrane, so that the membrane area can be maximized for oxygen separation in a limited space, but also significantly reduces the overall volume of the module, realizing the perfect combination of miniaturization and high efficiency of the module.

[0078] Specifically, the use of multiple groups of hollow fiber tubes 21 enables the deoxygenation module to have a larger membrane working area while maintaining a compact structure, thereby greatly improving the deoxygenation rate. The hollow fiber membrane group 2 can process more gas in a short time, significantly improving the deoxygenation efficiency, and providing a faster and more effective oxygen removal solution for the refrigerator to be deoxygenated area. In addition, the deoxygenation module further improves the deoxygenation effect by optimizing the arrangement of the hollow fiber membrane group 2 and the air flow channels for air in and out of the module. The high nitrogen gas accumulated on the outer wall of the hollow fiber tube 21 can be discharged quickly, avoiding the retention and accumulation of high nitrogen gas on the membrane surface, thereby ensuring that the hollow fiber tube 21 can continuously and efficiently process other gases. The arrangement of the hollow fiber membrane group 2 not only improves the gas processing efficiency, but also effectively extends the service life of the membrane and reduces maintenance costs.

[0079] The present application provides a deoxygenation module, and the specific embodiments are as follows:

[0080] When the oxygen concentration in the area to be deoxygenated is below the target oxygen concentration, the vacuum pump is turned on and the gas in the hollow fiber tube 21 is pumped out of the area to be deoxygenated through the air pumping port 5. The hollow fiber tube 21 is in a negative pressure state, and the gas molecules on the outer wall of the hollow fiber tube 21 migrate into the tube through the hollow fiber tube 21 under the action of pressure. Since the migration rate of oxygen in the hollow fiber tube 21 is faster than that of nitrogen, high-oxygen gas is gradually formed in the hollow fiber tube 21 and is pumped out of the area to be deoxygenated by the vacuum pump, and nitrogen molecules gather on the outer wall of the hollow fiber tube 21. The fan 4 runs synchronously, sucking the gas in the area to be deoxygenated from the air inlet 11 into the fan 4 and transporting it to the first fixed fence 14 by the fan blades. The gas enters the air flow channel between the hollow fiber membrane groups 2 through the air flow channel of the first fixed fence 14, and takes away the nitrogen molecules on the outer wall of the hollow fiber tube 21, and the outer wall of the hollow fiber tube 21 is filled with gas to be treated again. The high nitrogen gas brought out by the fan 4 is discharged to the deoxygenation area through the first air outlet 13 and the second air outlet 31. This cycle is repeated until the oxygen content in the functional area is below the target oxygen concentration, and the fan 4 is turned off.

[0081] A second aspect of the present application provides a refrigerator, comprising:

[0082] A deoxygenation module as described in any of the above embodiments.

[0083] The deoxygenation module is provided with a mounting hole, and the refrigerator manufacturer can pass bolts or other fixing devices through the mounting hole and the box body to fix the deoxygenation module to the refrigerator. The above arrangement allows the deoxygenation module to be manufactured separately, and the arrangement of the mounting hole improves the installation efficiency of the deoxygenation module, thereby improving the production efficiency of the refrigerator.

[0084] It is worth noting that the effects of the above refrigerator embodiment can refer to the effects of the above deoxygenation module embodiment, which will not be repeated here.

[0085] The above specific implementation methods further explain in detail the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above are only specific implementation methods of the embodiments of the present application and are not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A deoxygenation module, characterized in that: include: A box body (1), wherein the bottom surface of the box body (1) is provided with an air inlet (11), which is arranged on one side of the box body (1); the side surface of the box body (1) is provided with an air suction port (12) and a first air outlet (13), which are arranged on the other side of the box body (1); the air suction port (12) is connected to the air inlet end of a vacuum pump, and the air outlet end of the vacuum pump is connected to the outside of the area to be deoxygenated; a first fixed bar (14) and a second fixed bar (15) are provided along the width direction of the box body (1), and the first fixed bar (14) and the second fixed bar (15) are arranged in the box body (1); the first fixed bar (14) and the second fixed bar (15) are provided with air flow channels; A hollow fiber membrane group (2), the hollow fiber membrane group (2) being arranged between the first fixed column (14) and the second fixed column (15); the hollow fiber membrane group (2) being provided with a plurality of hollow fiber tubes (21), the flow rate of oxygen in the hollow fiber tubes (21) being greater than the flow rate of nitrogen; A cover body (3), the cover body (3) being snap-fitted to the box body (1); when the cover body (3) is snap-fitted to the box body (1), a receiving cavity for receiving the hollow fiber membrane group (2) is formed.

2. A deoxygenation module according to claim 1, characterized in that: Also includes: A fan (4), wherein the air inlet end of the fan (4) is connected to the air inlet (11), and the air outlet end of the fan (4) faces the hollow fiber membrane group (2).

3. A deoxygenation module according to claim 1, characterized in that: The cover body (3) is provided with a second air outlet (31); the projection of the second air outlet (31) in the direction of the hollow fiber membrane group (2) completely covers the hollow fiber membrane group (2).

4. A deoxygenation module according to claim 1, characterized in that: Also includes: An exhaust pipe (5), one end of which is connected to an end of the hollow fiber tube (21) close to the exhaust port (12); and the other end of the exhaust pipe (5) is connected to the exhaust port (12).

5. A deoxygenation module according to claim 1, characterized in that: A gap is provided between the hollow fiber membrane group (2), the cover body (3) and the box body (1).

6. A deoxygenation module according to claim 1, characterized in that: The hollow fiber tube (21) is arranged between the first fixed column (14) and the second fixed column (15) along the length direction of the box body (1); the distance between adjacent hollow fiber tubes (21) is a preset distance.

7. A deoxygenation module according to claim 1, characterized in that: A clamping device is provided along the width direction of the first fixing bar (14) and the second fixing bar (15); the clamping device is arranged on both sides of the first fixing bar (14) and the second fixing bar (15) opposite to each other; The box body (1) is provided with a clamping groove in the height direction, and the clamping groove is arranged on two sides of the box body (1) opposite to each other; The first fixing bar (14) or the second fixing bar (15) is clamped into the box body (1) by the clamping device being clamped into the clamping groove.

8. A deoxygenation module according to claim 2, characterized in that: Also includes: A gas detector, which is disposed in the area to be deoxygenated and is configured to obtain the oxygen concentration in the area to be deoxygenated; A controller, connected to the gas detector and the fan (4), configured to: According to the oxygen concentration in the area to be deoxygenated, the target operating power of the fan (4) is determined and the fan (4) is controlled to operate according to the target operating power.

9. A deoxygenation module according to claim 8, characterized in that: The target operating power includes: a first operating power, a second operating power, and a third operating power; the first operating power is less than the second operating power, and the second operating power is less than the third operating power; The controller is further configured to: If the oxygen concentration in the area to be deoxygenated is less than the first concentration, controlling the fan (4) to be turned off; If the oxygen concentration in the area to be deoxygenated is greater than or equal to the first concentration and less than the second concentration, controlling the fan (4) to operate at the first operating power; If the oxygen concentration in the area to be deoxygenated is greater than or equal to the second concentration and less than a third concentration, controlling the fan (4) to operate at the second operating power; If the oxygen concentration in the area to be deoxygenated is greater than or equal to the third concentration, controlling the fan (4) to operate at the third operating power; The first concentration is lower than the second concentration, and the second concentration is lower than the third concentration.

10. A refrigerator, characterized in that: include: A deoxygenation module as claimed in any one of claims 1 to 9.

Images