Refrigeration equipment

Abstract

The utility model discloses refrigeration equipment which comprises a first oxygen adjusting chamber and an oxygen adjusting module, the first oxygen adjusting chamber comprises a first cavity, and the bottom wall of the first oxygen adjusting chamber is provided with a first air inlet and a first air return opening which are communicated with the first cavity; the oxygen adjusting module is arranged below the first oxygen adjusting chamber, and the oxygen adjusting module adjusts the oxygen concentration in the first cavity. The oxygen adjusting module is arranged below the first oxygen adjusting chamber, an air flow path structure in vertical butt joint is formed, adjusted gas can directly enter the oxygen adjusting chambers from the lower portion, and the oxygen concentration in the whole chamber can be more evenly distributed in a natural rising and dispersing flowing mode; and a relatively independent modular structure is formed between the oxygen adjusting module and the oxygen adjusting chamber, the layout is reasonable, the rationality of the overall design of the refrigeration equipment is improved, the space utilization rate of the refrigeration equipment is increased, and the food material fresh-keeping effect and the overall performance of the equipment are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of cold storage and preservation technology, and in particular to a refrigeration device. Background Technology

[0002] In existing refrigeration equipment technology, especially in refrigeration equipment used for food preservation, only temperature and humidity can usually be regulated. However, oxygen concentration has a direct and significant impact on the preservation effect of certain foods (such as fresh vegetables, fruits, and fresh meat). For example, the respiration and oxidation rates of fresh vegetables and fruits differ in high-oxygen and low-oxygen environments, and adjusting the oxygen concentration can significantly reduce their spoilage and oxidation rates. Similarly, for meat, oxygen concentration not only affects its color but also inhibits the growth and reproduction of anaerobic bacteria.

[0003] While some refrigeration equipment has attempted to incorporate oxygen regulation technology, unsatisfactory connections and layouts between the oxygen regulation system and existing compartments often lead to problems such as excessively long airflow paths, poor sealing, and low regulation efficiency. This, in turn, affects the stability and uniformity of oxygen concentration throughout the entire preservation room, making precise oxygen concentration control impossible. Consequently, this results in suboptimal preservation effects and short-lived freshness. Therefore, designing a refrigeration system that optimizes the layout of the oxygen regulation module and improves regulation efficiency and sealing is a pressing technical challenge. Summary of the Invention

[0004] To address the problem of unreasonable layout of oxygen-regulating equipment in existing technologies, the purpose of this utility model is to provide a refrigeration device with a compact overall design and good oxygen-regulating effect.

[0005] To achieve the above-mentioned objectives, one embodiment of this utility model provides a refrigeration device, comprising:

[0006] The first oxygen-regulating chamber includes a first cavity, and the bottom wall of the first oxygen-regulating chamber is provided with a first air inlet and a first air return outlet communicating with the first cavity.

[0007] An oxygen regulation module is disposed below the first oxygen regulation chamber. The oxygen regulation module includes a second air inlet and a second air return outlet. The second air inlet is connected to the first air inlet, and the second air return outlet is connected to the first air return outlet. The oxygen regulation module adjusts the oxygen concentration in the first chamber through the second air inlet and the second air return outlet.

[0008] As a further improvement of this utility model, the refrigeration equipment also includes a plurality of sealing elements, one of which abuts between the first air inlet and the second air inlet, and another of which abuts between the first return air inlet and the second return air inlet.

[0009] As a further improvement of this utility model, both the first air inlet and the first air return outlet are conical, and the cross-sections of the first air inlet and the first air return outlet gradually decrease in the direction close to the first cavity. The second air inlet is inserted into the first air inlet, and the second air return outlet is inserted into the first air return outlet.

[0010] As a further improvement of this utility model, the sealing element includes a first skirt and a second skirt arranged sequentially from top to bottom. The outer diameter of the first skirt is smaller than the outer diameter of the second skirt. The sealing elements at the first air inlet and the first air return outlet abut against the first skirt and the second skirt of their respective sealing elements.

[0011] As a further improvement of this utility model, both the second air inlet and the second air outlet include a limiting bottom wall, a pipe wall and a limiting upper wall arranged sequentially from bottom to top, and the sealing member is sleeved on the outer surface of the pipe wall and abuts against the limiting bottom wall and the limiting upper wall.

[0012] As a further improvement of this utility model, the first oxygen-regulating chamber further includes an air inlet and an air trough. The two ends of the air trough are respectively connected to the first air inlet and the air inlet. The distance from the air inlet to the first return air inlet is greater than the distance from the first air inlet to the first return air inlet.

[0013] As a further improvement of this utility model, the first oxygen adjustment chamber further includes a side wall, a sealing strip, and a back plate, wherein the back plate abuts against the sealing strip between the side wall and the side wall, and the back plate and the side wall together enclose the air groove.

[0014] As a further improvement of this utility model, the refrigeration device includes a first drawer, the first oxygen conditioning chamber includes a forward opening, the first drawer is accommodated in the first cavity through the opening, the side wall of the air groove is set as the rear wall of the first oxygen conditioning chamber, and the air inlet is set on the rear wall.

[0015] As a further improvement of this utility model, the cross-sections of the first air inlet, the first air return outlet, the second air inlet, and the second air return outlet are all square. The second air inlet is inserted into the first air inlet, and the second air return outlet is inserted into the first air return outlet. Multiple locking tabs are provided in the first oxygen conditioning room. One of the locking tabs is locked between the second air inlet and the first air inlet to restrict the separation of the second air inlet and the first air inlet. Another locking tab is locked between the second air return outlet and the first air return outlet to restrict the separation of the second air return outlet and the first air return outlet.

[0016] As a further improvement of this utility model, the refrigeration equipment includes a refrigeration chamber and a leak-proof compartment, the oxygen regulating module is disposed in the leak-proof compartment, and the leak-proof compartment isolates the oxygen regulating module from the refrigeration chamber.

[0017] As a further improvement of this utility model, the refrigeration equipment further includes a second oxygen-regulating chamber, which includes a second cavity. The second oxygen-regulating chamber is located below the first oxygen-regulating chamber and is arranged parallel to the oxygen-regulating module in the horizontal direction. The oxygen-regulating gas of the oxygen-regulating module enters the second cavity.

[0018] As a further improvement of this utility model, the first oxygen-regulating chamber further includes a downwardly arranged air outlet, and the second oxygen-regulating chamber includes an upwardly arranged air inlet, with the air outlet and the air inlet connected together.

[0019] As a further improvement of this utility model, the refrigeration device also includes an air guide, which drives the airflow in the first cavity to blow towards the second cavity.

[0020] As a further improvement of this utility model, the oxygen regulating module includes a third air inlet and a third air return outlet. The oxygen regulating module adjusts the oxygen concentration in the first cavity through the third air inlet and the third air return outlet. The oxygen concentration in the second cavity is lower than the external oxygen concentration and higher than the oxygen concentration in the first cavity.

[0021] As a further improvement of this utility model, the second oxygen-regulating chamber contains a second drawer and a partition. The partition divides the second cavity into an airflow channel and a receiving space. Ventilation holes are provided on the partition. The third air inlet is connected to the airflow channel, and the third air return outlet is connected to the receiving space. The airflow blown out from the third air inlet passes through the airflow channel, the ventilation holes, and the receiving space in sequence before reaching the third air return outlet.

[0022] Compared with commonly used technologies, this utility model has the following advantages: by setting the oxygen regulating module below the first oxygen regulating chamber, a vertically connected airflow path structure is formed. The regulated gas can directly enter the oxygen regulating chamber from below. Through natural upward and dispersed flow, the oxygen concentration in the entire chamber can be more evenly distributed. Moreover, the oxygen regulating module and the oxygen regulating chamber form a relatively independent modular structure with a reasonable layout, which improves the overall design rationality and space utilization of the refrigeration equipment, and greatly enhances the food preservation effect and the overall performance of the equipment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a refrigeration device according to an embodiment of the present invention;

[0024] Figure 2 This is an exploded view of the first and second oxygen-regulating chambers according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the first oxygen-regulating chamber according to an embodiment of the present invention;

[0026] Figure 4 This is an exploded view of the first oxygen-regulating chamber and oxygen-regulating module according to an embodiment of the present invention;

[0027] Figure 5 This is a side view of the first and second oxygen adjustment chambers separated according to an embodiment of the present invention;

[0028] Figure 6 yes Figure 5 A magnified view of a section at point A in the middle;

[0029] Figure 7 This is a structural schematic diagram of the first oxygen adjustment chamber from the rear view of an embodiment of this utility model;

[0030] Figure 8 This is a side view of the first and second oxygen-regulating chambers according to another embodiment of the present invention;

[0031] Figure 9 yes Figure 8 A cross-sectional view along the AA direction;

[0032] Figure 10 yes Figure 9 A magnified view of a section at point B in the middle;

[0033] Figure 11 yes Figure 8 Cross-sectional view along the BB direction;

[0034] Figure 12 yes Figure 9 A magnified view of a section at point C;

[0035] Figure 13 This is an exploded view of the first oxygen-regulating chamber and oxygen-regulating module according to another embodiment of the present invention.

[0036] Figure 14 This is another exploded view of the first oxygen-regulating chamber and oxygen-regulating module according to another embodiment of the present invention;

[0037] Among them, 100, refrigeration equipment; 10, first oxygen-regulating chamber; 101, first cavity; 11, first air inlet; 12, first return air inlet; 13, air outlet; 14, first drawer; 15, rear wall; 161, air trough; 162, air inlet hole; 171, back plate; 172, sealing strip; 20, oxygen-regulating module; 21, second air inlet; 211, limiting bottom wall; 212, pipe wall; 213, etc. 1. Limiting upper wall; 22. Second return air inlet; 23. Third air inlet; 24. Third return air inlet; 25. Clip-on piece; 30. Second oxygen-regulating chamber; 301. Second cavity; 302. Accommodation space; 303. Airflow channel; 31. Second drawer; 32. Partition; 33. Air inlet; 40. Sealing element; 41. First skirt; 42. Second skirt; 50. Refrigeration chamber; 60. Leak-proof compartment. Detailed Implementation

[0038] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0039] It should be understood that terms such as “above,” “over,” “below,” and “under” used herein to indicate spatial relative position are for illustrative purposes to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms “spatial relative position” may be intended to include different orientations of the equipment in use or operation other than those shown in the figures.

[0040] One embodiment of this utility model provides a refrigeration device 100 with a compact overall design and good oxygen regulation effect.

[0041] The refrigeration device 100 in this embodiment can be a refrigerator, freezer, wine cabinet, or refrigerated display case. The following description uses a refrigerator as an example. The overall structure of the refrigerator is as follows: Figure 1 As shown.

[0042] The refrigerator includes a refrigeration system, a refrigeration compartment 50, a first oxygen-regulating compartment 10, a cooling component and an oxygen-regulating module 20. The refrigeration system includes a compressor, a condenser, a capillary tube, an evaporator, and refrigeration pipes. The evaporator can be located in the evaporator chamber, and there can be one or more evaporators. For example, for a dual-system refrigerator with separate refrigeration compartments for the refrigerator and freezer compartments, separate refrigeration evaporators and freezer evaporators can be installed.

[0043] The cooling system includes a cooling air supply path, a first fan, and a first damper. When the first fan operates, the first damper opens, and the cooling air supplied to the first oxygen-regulating chamber 10 flows only outside the oxygen-regulating chamber. The cooling capacity is indirectly transferred into the interior of the first oxygen-regulating chamber 10 through its outer wall. The cooling chamber 50 can be a cold storage chamber, a freezer chamber, a variable temperature chamber, etc. The following description of the cooling chamber 50 uses a cold storage chamber as an example.

[0044] The first oxygen-regulating chamber 10 is a dedicated compartment for preserving fresh ingredients. Its internal oxygen concentration is adjustable. An oxygen-regulating module 20 is used to adjust the oxygen concentration in the first oxygen-regulating chamber 10, allowing it to be lower or higher than the external oxygen concentration. Depending on the characteristics of the stored ingredients, different oxygen concentrations are adjusted to maintain the ingredients in their optimal storage condition. The first oxygen-regulating chamber 10 includes a first cavity 101 with an opening. A first drawer 14 is housed within the first cavity 101 through the opening. The first drawer 14 has an open opening, allowing the user to pull out and retrieve ingredients from the drawer 14.

[0045] To clearly express the positions and directions described in this embodiment, in this embodiment, the direction of gravity is defined as up and down, that is, the direction of gravity is down and the opposite direction is up. When the user operates the items inside the refrigerator, the user is standing in front of the refrigerator, and the opposite direction is behind. The two sides of the plane containing the front, back, up, and down are the left and right sides, respectively. Correspondingly, the opening is located in front of the first oxygen-regulating chamber 10, and the opening is located above the first drawer 14. The first drawer 14 is pushed and pulled in the front-back direction.

[0046] Taking the oxygen-regulating module 20 for adjusting a low-oxygen environment as an example, through precise oxygen concentration control, a stable low-oxygen environment can be provided for stored food, inhibiting its respiration and extending its shelf life. The benefits of a low-oxygen environment are that it significantly reduces the oxidation rate of food and decreases the reproduction of microorganisms, especially for perishable fruits and vegetables, where the preservation effect is particularly significant. Because this solution can precisely control the oxygen concentration, it avoids the problem of unstable food quality caused by excessive fluctuations in oxygen concentration in traditional equipment, thus ensuring a long-term preservation effect.

[0047] The oxygen concentration in the outside atmosphere is generally around 21%, and the oxygen concentration in the first oxygen adjustment chamber 10 and the second oxygen adjustment chamber 30 (described below) can be reduced to the range of 15% to 20%.

[0048] Taking the oxygenation module 20 for regulating a hyperoxia environment as an example, some foods, such as fresh pork, beef, and lamb, exhibit better storage performance in environments with higher oxygen concentrations. In hyperoxia packaging, the higher oxygen concentration inhibits the growth and reproduction of anaerobic bacteria. Furthermore, the higher oxygen concentration allows it to combine with deoxymyoglobin on the muscle surface to form a thicker layer of oxymyoglobin, maintaining the meat's bright red color and improving its color stability. Simultaneously, the higher oxygen concentration protects the meat's color because lower oxygen concentrations induce the oxidation of deoxymyoglobin to methemoglobin. Under higher oxygen concentrations, the meat surface is primarily composed of oxymyoglobin, which is not directly oxidized to methemoglobin. The oxygenation module 20 can also be used to regulate the oxygen concentration in the first oxygenation chamber 10 and the second oxygenation chamber 30 (described below), ensuring their oxygen concentration is higher than the external oxygen concentration, for example, reaching a range of 22% to 25%.

[0049] The following explanation will take the oxygen regulating module 20, which mainly regulates the low-oxygen environment, as an example. That is to say, the oxygen concentration of the gas output by the oxygen regulating module 20 is relatively low, while the oxygen concentration of the recovered gas is relatively high.

[0050] like Figures 2-4 As shown, the bottom wall of the first oxygen-regulating chamber 10 is provided with a first air inlet 11 and a first air return outlet 12 that connect the first cavity 101. The oxygen-regulating module 20 is disposed below the first oxygen-regulating chamber 10. The oxygen-regulating module 20 includes a second air inlet 21 and a second air return outlet 22. The second air inlet 21 is connected to the first air inlet 11, and the second air return outlet 22 is connected to the first air return outlet 12. The oxygen-regulating module 20 adjusts the oxygen concentration in the first cavity 101 through the second air inlet 21 and the second air return outlet 22.

[0051] The gas flow path is as follows: After the oxygen regulating module 20 generates gas with a relatively low oxygen concentration, this gas enters the first air inlet 11 through the second air inlet 21, then enters the first cavity 101, displacing the gas in the first cavity 101. The displaced gas then passes through the first return air inlet 12 to the second return air inlet 22, and then returns to the oxygen regulating module 20. Taking low-oxygen gas as an example, the oxygen concentration gradually increases during the gas transmission process. That is to say, the oxygen concentration of the gas flowing upward through the second air inlet 21 is less than the oxygen concentration of the gas flowing downward through the second return air inlet 22.

[0052] Furthermore, compared to natural gases in the atmosphere, the lower the oxygen concentration, the lower the gas density, and the higher the relative oxygen concentration, the higher the relative gas density. Therefore, the gas output by the oxygen regulating module 20 located below the first oxygen regulating chamber 10 is lighter than the gas in the first cavity 101 above, and naturally tends to flow upwards. After being exchanged, it becomes a heavier gas with a higher oxygen concentration, and naturally tends to flow downwards.

[0053] Therefore, by arranging the oxygen-regulating module 20 below the first oxygen-regulating chamber 10, a bottom-up airflow regulation path is achieved. This effectively shortens the gas circulation path, reduces airflow resistance, and allows the regulated gas to quickly and evenly enter the first oxygen-regulating chamber 10, forming a closed airflow circulation system to prevent gas leakage and ensure continuous oxygen concentration regulation. Furthermore, natural convection allows the airflow to rise and disperse before sinking to complete the circulation, resulting in a more even distribution of oxygen concentration throughout the chamber. Moreover, the oxygen-regulating module 20 and the oxygen-regulating chamber form a relatively independent modular structure with a rational layout, improving the overall design rationality and space utilization of the refrigeration equipment 100. The overall design is more compact, which not only improves the functional integration of the refrigeration equipment 100 but also facilitates later maintenance and replacement, contributing to the long-term stable operation of the equipment. Therefore, this structure greatly improves the food preservation effect and the overall performance of the equipment.

[0054] like Figures 5-6 As shown, the refrigeration equipment 100 also includes a plurality of seals 40, one of which abuts between the first air inlet 11 and the second air inlet 21, and another of which abuts between the first return air inlet 12 and the second return air inlet 22.

[0055] Multiple seals 40 enhance the sealing of the oxygen conditioning system, preventing airflow leakage during the conditioning process, ensuring that the regulated oxygen concentration is stably and evenly distributed in the oxygen conditioning room, reducing gas loss due to poor sealing, and improving the efficiency of oxygen conditioning.

[0056] Furthermore, both the first air inlet 11 and the first return air inlet 12 are conical, with their cross-sections gradually decreasing towards the first cavity 101. The second air inlet 21 is inserted into the first air inlet 11, and the second return air inlet 22 is inserted into the first return air inlet 12. This conical structure ensures a stable connection, making the connection between the oxygen regulating module 20 and the oxygen regulating chamber tighter, improving sealing performance, reducing the risk of gas leakage at the interface, and thus improving the overall oxygen regulation efficiency of the equipment.

[0057] like Figure 6As shown, the sealing element 40 includes a first skirt 41 and a second skirt 42 arranged sequentially from top to bottom. The outer diameter of the first skirt 41 is smaller than the outer diameter of the second skirt 42. The sealing elements 40 at the first air inlet 11 and the first air return outlet 12 abut against the first skirt 41 and the second skirt 42 of their respective sealing elements 40. The first skirt 41 and the second skirt 42 enhance the sealing performance of the equipment, ensuring that sealing elements 40 of different sizes can completely fit the first air inlet 11 and the first air return outlet 12, avoiding air leakage at different interfaces. Furthermore, the first skirt 41 and the second skirt 42 improve the connection reliability between the oxygen conditioning module 20 and the oxygen conditioning chamber. The dimensional design of the first skirt 41 and the second skirt 42, combined with the conical first air inlet 11 and the first air return outlet 12, greatly enhances the stability and safety of the structure.

[0058] Continue as Figure 6 As shown, both the second air inlet 21 and the second return air inlet 22 include a limiting bottom wall 211, a pipe wall 212, and a limiting upper wall 213 arranged sequentially from bottom to top. The sealing element 40 is sleeved on the outer surface of the pipe wall 212 and abuts against the limiting bottom wall 211 and the limiting upper wall 213. This structural design ensures more precise and stable airflow connection between the oxygen regulating module 20 and the oxygen regulating chamber, effectively preventing the sealing element 40 from shifting under the action of airflow, and ensuring the stability and sealing of the airflow path during the adjustment process.

[0059] like Figure 7 As shown, the first oxygen-regulating chamber 10 also includes an air inlet 162 and an air trough 161. The two ends of the air trough 161 are connected to the first air inlet 11 and the air inlet 162, respectively. The distance from the air inlet 162 to the first return air inlet 12 is greater than the distance from the first air inlet 11 to the first return air inlet 12. This helps to extend the flow path of gas into the first chamber 101, prevent airflow short-circuiting, and prevent the formation of dead corners in the chamber. This design ensures that the oxygen-regulating gas is fully dispersed in the first chamber 101 before flowing away from the first return air inlet 12, making oxygen regulation more stable and reliable.

[0060] Continue as Figure 7 As shown, the first oxygen regulating chamber 10 also includes a side wall, a sealing strip 172, and a back plate 171. The back plate 171 abuts against the sealing strip 172 with the side wall, and the back plate 171 and the side wall enclose an air groove 161. This improves the sealing performance of the equipment, prevents gas leakage, and makes the airflow circulation inside the air groove 161 more stable and efficient.

[0061] Combination Figure 4 , 5As shown in Figure 7, the first oxygen-regulating chamber 10 includes a forward opening, and the first drawer 14 is housed within the first cavity 101 through the opening. The side wall of the air groove 161 forms the rear wall 15 of the first oxygen-regulating chamber 10, and the air inlet 162 is located on the rear wall 15. In this way, oxygen regulation does not affect the user's ability to conveniently put or take out food from the front, and airflow can effectively enter the drawer from the rear while maintaining the airtightness of the oxygen-regulating chamber.

[0062] like Figure 2 As shown, the refrigeration equipment 100 includes a refrigeration chamber 50 and a leak-proof compartment 60. The oxygen regulating module 20 is installed in the leak-proof compartment 60, which isolates the oxygen regulating module 20 from the refrigeration chamber 50.

[0063] This prevents the oxygen control module 20 from leaking and contaminating the food. The oxygen control module 20 is placed separately in the leak-proof compartment 60. If the oxygen control module 20 is not obstructed from the refrigeration compartment 50, leaks may come into contact with the food. If the oxygen control module 20 is above the first oxygen control compartment 10, leaks may drip onto the food inside the first oxygen control compartment 10. Therefore, by placing the oxygen control module 20 in the leak-proof compartment 60 below the first oxygen control compartment 10, even if the oxygen control module 20 leaks, it will not contaminate the food in the first drawer 14.

[0064] Additionally, it prevents equipment malfunctions caused by condensate or other liquids entering the oxygen control module 20. This isolation design not only improves equipment safety but also reduces maintenance costs and extends the service life of the oxygen control module 20.

[0065] To reduce the shaking of the oxygen regulating module 20, the distance between the oxygen regulating module 20 and the leak-proof compartment 60 is less than 1mm, or it is supported between the oxygen regulating module 20 and the leak-proof compartment 60 by elastic cushioning material.

[0066] like Figure 2 , 5 As shown in Figure 8, the refrigeration equipment 100 also includes a second oxygen-regulating chamber 30. The second oxygen-regulating chamber 30 includes a second cavity 301. The second oxygen-regulating chamber 30 is located below the first oxygen-regulating chamber 10 and is arranged in parallel with the oxygen-regulating module 20 in the horizontal direction. The oxygen-regulating gas of the oxygen-regulating module 20 enters the second cavity 301.

[0067] By setting up a first oxygen-adjusting chamber 10 and a second oxygen-adjusting chamber 30, different oxygen concentration gradients can be created between the two chambers. This structure allows for flexible adjustment of different oxygen concentration environments within the same refrigeration unit 10, based on the oxygen concentration requirements of different ingredients. Ingredients with specific oxygen concentration requirements are placed in the first oxygen-adjusting chamber 10, while those with different oxygen concentration requirements are placed in the second oxygen-adjusting chamber 30. This satisfies the oxygen environment needs of different ingredients. Furthermore, the oxygen-adjusting module 20 is arranged parallel to the multiple chambers, resulting in a rational spatial layout.

[0068] The oxygen regulation method of the second oxygen adjustment chamber 30 will be described below in two implementation methods.

[0069] In one embodiment, such as Figure 2 , 3 As shown, the first oxygen-regulating chamber 10 also includes a downwardly positioned air outlet 13, and the second oxygen-regulating chamber 30 includes an upwardly positioned air inlet 33, with the air outlet 13 connected to the air inlet 33.

[0070] The oxygen flow can be smoothly transferred from the first chamber 101 to the second chamber 301. Through the natural oxygen concentration gradient distribution, different oxygen concentration ranges are formed. The first oxygen-adjusting chamber 10 has the lowest oxygen concentration and can be used to store ingredients that are most sensitive to oxygen concentration, such as fresh-cut fruits and tender leafy vegetables. The second oxygen-adjusting chamber 30 has a slightly higher oxygen concentration but is still lower than the external environment and can be used to store general fruits, vegetables or meat. This achieves multiple oxygen concentration adjustment functions and improves the overall space utilization and adjustment efficiency of the equipment.

[0071] In addition, a sealing element 40 can also be provided between the air outlet 13 and the air inlet 33. The structure of the sealing element 40 is as described above, and the corresponding air outlet 13 is also conical.

[0072] Furthermore, the refrigeration device 100 also includes an air guide, which drives the airflow in the first cavity 101 to blow towards the second cavity 301. The air guide ensures that the airflow can flow along a predetermined path, avoiding stagnation or deviation of the airflow in the cavity, accelerating the oxygen adjustment process, and improving the efficiency of gas regulation, making it particularly suitable for applications that require rapid adjustment of oxygen concentration.

[0073] The air guide can be configured as a centrifugal fan, utilizing its ability to provide strong centrifugal force. The centrifugal fan, rotating at high speed, provides higher static pressure, resulting in smoother airflow within the channel. This allows for a stable and powerful airflow within a relatively small space, ensuring the rapid and uniform distribution of low-oxygen gas in the oxygen conditioning module 20 within the first and second oxygen conditioning chambers 10, guaranteeing that the oxygen concentration in the second oxygen conditioning chamber 30 is quickly adjusted to the desired level. Furthermore, the centrifugal fan can flexibly change the airflow velocity and flow rate by adjusting its rotation speed, thereby more precisely controlling the gas flow between the two chambers.

[0074] In another embodiment, such as Figures 8-12 As shown, the oxygen regulating module 20 includes a third air inlet 23 and a third air return outlet 24. The oxygen regulating module 20 regulates the oxygen concentration in the first cavity 101 through the third air inlet 23 and the third air return outlet 24. The oxygen concentration in the second cavity 301 is lower than the external oxygen concentration and higher than the oxygen concentration in the first cavity 101.

[0075] The difference from the previous embodiment is that the oxygen concentration adjustment in the second chamber 301 does not depend on the first oxygen adjustment chamber 10, but is directly supplied by the oxygen adjustment module 20. This allows for more precise oxygen concentration control in different chambers, meeting the different oxygen concentration requirements of different chambers, and enabling the equipment to maintain efficient and stable oxygen regulation in complex environments, thereby improving the overall functionality and flexibility of the equipment.

[0076] like Figures 9-12 As shown, the second oxygen-regulating chamber 30 contains a second drawer 31 and a partition 32. The partition 32 divides the second cavity 301 into an airflow channel 303 and a receiving space 302. Ventilation holes are provided on the partition 32. A third air inlet 23 connects to the airflow channel 303, and a third air return outlet 24 connects to the receiving space 302. The airflow from the third air inlet 23 passes sequentially through the airflow channel 303, the ventilation holes, and the receiving space 302 before reaching the third air return outlet 24. The airflow process from the oxygen-regulating module 20 to the second cavity 301 is as follows... Figure 9 and 10 As shown, the return air process from the second cavity 301 back to the oxygen control module 20 is as follows: Figure 11 and 12 As shown.

[0077] The partition 32 divides the cavity into an airflow channel 303 and a accommodating space 302, allowing unidirectional flow only through ventilation holes. This ensures that the gas flows along a predetermined path, improving gas flow efficiency and preventing airflow short-circuiting. This design significantly enhances the uniformity of oxygen concentration regulation within the cavity, ensuring the overall oxygen regulation effect of the equipment.

[0078] Another embodiment of the first air inlet 11, the first return air inlet 12, the second air inlet 21, and the second return air inlet 22, is as follows: Figure 13 and 14 As shown in the figure, the cross-sections of the first air inlet 11, the first air return outlet 12, the second air inlet 21, and the second air return outlet 22 are all set to square. The second air inlet 21 is inserted into the first air inlet 11, and the second air return outlet 22 is inserted into the first air return outlet 12.

[0079] Each docking interface is designed in a square shape, which improves the stability of the oxygen control system. The square interface design not only increases the contact area of ​​the airflow, but also makes the docking between the interfaces more stable, effectively preventing gas leakage at the interface.

[0080] Multiple locking tabs 25 are installed in the first oxygen adjustment chamber 10. One locking tab 25 is engaged between the second air inlet 21 and the first air inlet 11 to prevent separation between them; another locking tab 25 is engaged between the second return air inlet 22 and the first return air inlet 12 to prevent separation between them. The design of the locking tabs 25 further ensures the connection stability between the interfaces and prevents displacement or separation of the interfaces under airflow pressure. This design significantly improves the airflow sealing and adjustment efficiency of the equipment, ensuring the accuracy and continuity of oxygen concentration adjustment.

[0081] Figure 13 and 14 First, the second air inlet 21 and the second return air inlet 22 are inserted into the first cavity 101. At this time, the square second air inlet 21 and the second return air inlet 22 are exposed on the bottom wall of the first cavity 101. Then, the snap-fit ​​pieces 25 are inserted into both. The snap-fit ​​pieces 25 have a U-shaped structure, and the outer diameter of the snap-fit ​​pieces 25 is larger than the outer diameter of the second air inlet 21 and the first air inlet 11. After the snap-fit ​​pieces 25 are inserted, the oxygen regulating module 20 is fixed. The snap-fit ​​pieces 25 facilitate both installation and disassembly and maintenance.

[0082] In addition, the oxygen control module 20 includes at least one anode and at least one cathode, with the anode being controllably connected to the positive terminal of the power supply and the cathode being controllably connected to the negative terminal of the power supply.

[0083] Thus, when the controller controls the oxygen regulating module 20 to run, under the control of the controller, the positive terminal of the power supply is connected to the anode and the negative terminal of the power supply is connected to the cathode, that is, the power supply supplies power to the oxygen regulating module 20; and when the controller controls the oxygen regulating module 20 to stop, under the control of the controller, the positive terminal of the power supply is connected to the anode and the negative terminal of the power supply is connected to the cathode, that is, the power supply stops supplying power to the oxygen regulating module 20.

[0084] The oxygen control module 20 also includes an inner cavity that can at least contain an electrolyte, with a first side of the cathode exposed in the inner cavity and a second side exposed to the external air of the oxygen control module 20.

[0085] When the oxygen regulating module 20 is running, i.e., when it is energized, the cathode is used to consume oxygen from the external air through an electrochemical reaction. Specifically, oxygen undergoes a reduction reaction at the cathode, with the reaction formula being O2 + 2H2O + 4e. - →4OH - In this way, an oxygen-deficient preservation atmosphere can be formed outside the oxygen-regulating module 20.

[0086] One or both sides of the anode are exposed in the inner cavity. The anode is used to generate oxygen in the inner cavity through an electrochemical reaction to create an oxygen-rich preservation atmosphere. Specifically, OH- in the electrolyte... - An oxidation reaction can occur at the anode to produce oxygen, with the reaction formula being 4OH⁻. - →O2 + 2H2O + 4e - The generated oxygen is collected to create an oxygen-rich preservation atmosphere.

[0087] This allows you to adjust the oxygen concentration as needed and choose a suitable oxygen-deficient or oxygen-enriched preservation atmosphere.

[0088] Compared with the prior art, this embodiment has the following beneficial effects: by setting the oxygen regulating module 20 below the first oxygen regulating chamber 10, a vertically connected airflow path structure is formed. The regulated gas can directly enter the oxygen regulating chamber from below. Through natural rising and dispersed flow, the oxygen concentration in the entire chamber can be more evenly distributed. Moreover, the oxygen regulating module 20 and the oxygen regulating chamber form a relatively independent modular structure with a reasonable layout, which improves the overall design rationality and space utilization of the refrigeration equipment 100, and greatly enhances the food preservation effect and the overall performance of the equipment.

[0089] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0090] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A refrigeration device, characterized in that, include: The first oxygen-regulating chamber (10) includes a first cavity (101), and the bottom wall of the first oxygen-regulating chamber (10) is provided with a first air inlet (11) and a first air return outlet (12) communicating with the first cavity (101); An oxygen regulation module (20) is disposed below the first oxygen regulation chamber (10). The oxygen regulation module (20) includes a second air inlet (21) and a second air return outlet (22). The second air inlet (21) is connected to the first air inlet (11), and the second air return outlet (22) is connected to the first air return outlet (12). The oxygen regulation module (20) regulates the oxygen concentration in the first cavity (101) through the second air inlet (21) and the second air return outlet (22).

2. The refrigeration equipment according to claim 1, characterized in that, The refrigeration equipment also includes a plurality of seals (40), one of which abuts between the first air inlet (11) and the second air inlet (21), and another of which abuts between the first return air inlet (12) and the second return air inlet (22); The oxygen regulation module (20) adjusts the oxygen concentration inside the first cavity (101) to be lower than the external oxygen concentration.

3. The refrigeration equipment according to claim 2, characterized in that, The first air inlet (11) and the first air return outlet (12) are both conical. The cross-sections of the first air inlet (11) and the first air return outlet (12) gradually decrease in the direction close to the first cavity (101). The second air inlet (21) is inserted into the first air inlet (11), and the second air return outlet (22) is inserted into the first air return outlet (12).

4. The refrigeration equipment according to claim 3, characterized in that, The sealing element (40) includes a first skirt (41) and a second skirt (42) arranged sequentially from top to bottom. The outer diameter of the first skirt (41) is smaller than the outer diameter of the second skirt (42). The first air inlet (11) and the first air return outlet (12) abut against the first skirt (41) and the second skirt (42).

5. The refrigeration equipment according to claim 2, characterized in that, The second air inlet (21) and the second air outlet (22) each include a limiting bottom wall (211), a pipe wall (212) and a limiting upper wall (213) arranged sequentially from bottom to top. The sealing member (40) is sleeved on the outer surface of the pipe wall (212) and abuts against the limiting bottom wall (211) and the limiting upper wall (213).

6. The refrigeration equipment according to claim 1, characterized in that, The first oxygen-regulating chamber (10) further includes an air inlet (162) and an air trough (161). The two ends of the air trough (161) are respectively connected to the first air inlet (11) and the air inlet (162). The distance from the air inlet (162) to the first return air inlet (12) is greater than the distance from the first air inlet (11) to the first return air inlet (12).

7. The refrigeration equipment according to claim 6, characterized in that, The first oxygen adjustment chamber (10) also includes a side wall, a sealing strip (172) and a back plate (171), wherein the back plate (171) abuts against the sealing strip (172) with the side wall, and the back plate (171) and the side wall enclose the air groove (161).

8. The refrigeration equipment according to claim 6, characterized in that, The refrigeration equipment includes a first drawer (14), the first oxygen conditioning chamber (10) includes a forward opening, the first drawer (14) is housed in the first cavity (101) through the opening, the side wall of the air groove (161) is set as the rear wall (15) of the first oxygen conditioning chamber (10), and the air inlet (162) is set on the rear wall (15).

9. The refrigeration equipment according to claim 1, characterized in that, The cross-sections of the first air inlet (11), the first air return outlet (12), the second air inlet (21), and the second air return outlet (22) are all square. Multiple snap-fit ​​pieces (25) are provided in the first oxygen conditioning chamber (10). The second air inlet (21) is inserted into the first air inlet (11), and the second air return outlet (22) is inserted into the first air return outlet (12). They are all separated by snap-fit ​​pieces (25).

10. The refrigeration equipment according to claim 1, characterized in that, The refrigeration equipment includes a refrigeration chamber (50) and a leak-proof compartment (60). The oxygen regulating module (20) is installed in the leak-proof compartment (60), which isolates the oxygen regulating module (20) from the refrigeration chamber (50).

11. The refrigeration equipment according to claim 1 or 10, characterized in that, The refrigeration equipment also includes a second oxygen-regulating chamber (30), which includes a second cavity (301). The second oxygen-regulating chamber (30) is located below the first oxygen-regulating chamber (10), and the oxygen-regulating gas of the oxygen-regulating module (20) enters the second cavity (301).

12. The refrigeration equipment according to claim 11, characterized in that, The first oxygen-regulating chamber (10) further includes a downwardly arranged air outlet (13), and the second oxygen-regulating chamber (30) includes an upwardly arranged air inlet (33), with the air outlet (13) connected to the air inlet (33).

13. The refrigeration equipment according to claim 12, characterized in that, The refrigeration equipment also includes an air guide, which drives the airflow in the first cavity (101) to blow towards the second cavity (301).

14. The refrigeration equipment according to claim 11, characterized in that, The oxygen regulation module (20) includes a third air inlet (23) and a third air return outlet (24). The oxygen regulation module (20) adjusts the oxygen concentration in the first cavity (101) through the third air inlet (23) and the third air return outlet (24). The oxygen concentration in the second cavity (301) is lower than the external oxygen concentration and higher than the oxygen concentration in the first cavity (101).

15. The refrigeration equipment according to claim 14, characterized in that, The second oxygen-regulating chamber (30) contains a second drawer (31) and a partition (32). The partition (32) divides the second cavity (301) into an airflow channel (303) and a accommodating space (302). Ventilation holes are provided on the partition (32). The third air inlet (23) is connected to the airflow channel (303), and the third air return outlet (24) is connected to the accommodating space (302).

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