Refrigeration equipment

Abstract

The utility model discloses refrigeration equipment, which comprises a plurality of fresh-keeping chambers and a fresh-keeping module, the fresh-keeping module comprises a gas outlet for outputting fresh-keeping gas, one fresh-keeping chamber is communicated with the gas outlet, one fresh-keeping chamber is communicated with another fresh-keeping chamber in series by gas flow, and the other fresh-keeping chamber is communicated with the gas outlet. And the concentration of the fresh-keeping gas in the other fresh-keeping chamber is changed along with the change of the concentration of the fresh-keeping gas in one fresh-keeping chamber. According to the equipment, the gas concentration of each fresh-keeping chamber can be adjusted with very low pipeline layout difficulty, a stable gas gradient can be formed among the fresh-keeping chambers, the requirements of different food materials on different fresh-keeping environments in the same equipment are met, the fresh-keeping performance of the equipment is improved, the production and control cost is reduced, and the product quality is improved. And meanwhile, more flexible use experience is provided for the user.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of refrigeration and preservation, and particularly relates to a refrigeration equipment. BACKGROUND

[0002] In the existing refrigeration equipment technology, especially the refrigeration equipment for food preservation, only temperature adjustment is usually available, however, different gas concentrations have a direct and significant influence on the preservation effect of certain food (such as fresh vegetables, fruits and fresh meat), for example, different concentrations of oxygen, carbon dioxide and water vapor are suitable for different food, the respiration and oxidation rates of fresh vegetables and fruits in a high-oxygen or low-oxygen environment are different, and the adjustment of oxygen concentration can significantly reduce the decay and oxidation rate; similarly, for meat food, the oxygen concentration not only affects the color, but also inhibits the growth and reproduction of anaerobic bacteria.

[0003] In some refrigeration equipment, the adjustment of gas concentration is attempted, but only the gas concentration in a certain chamber can be adjusted, on the one hand, the concentration adjustment of multiple chambers will greatly increase the difficulty of pipeline layout, in the existing refrigerator, the addition of one chamber increases one set of pipeline and one set of control facilities, which greatly increases the volume and cost, on the other hand, it is difficult to provide a suitable gas concentration range for different food according to their needs. SUMMARY

[0004] To solve the problem of how to meet the gas concentration adjustment of multiple chambers in the prior art, the purpose of the utility model is to provide a refrigeration equipment which can realize the gas adjustment in multiple chambers at a lower cost and with a smaller space occupation.

[0005] To achieve the above-mentioned purpose of the utility model, an embodiment of the utility model provides a refrigeration equipment, which comprises:

[0006] a plurality of preservation chambers;

[0007] a preservation module, the preservation module comprises an air outlet for outputting preservation gas, one of the preservation chambers is communicated with the air outlet, the one of the preservation chambers and another of the preservation chambers are communicated in series, and the concentration of the preservation gas in the another of the preservation chambers changes with the change of the concentration of the preservation gas in the one of the preservation chambers.

[0008] As a further improvement of the utility model, the one of the preservation chambers is communicated with the another of the preservation chambers in series, and the gas flow output from the preservation module reaches the another of the preservation chambers after passing through the one of the preservation chambers.

[0009] As a further improvement of the present invention, the fresh-keeping gas output by the fresh-keeping module is used to adjust the gas concentration including oxygen concentration, carbon dioxide concentration, water vapor concentration, nitrogen concentration, oxygen concentration and water vapor concentration, or carbon dioxide concentration and water vapor concentration.

[0010] As a further improvement of the present invention, the fresh-keeping module adjusts the gas concentration in one of the fresh-keeping rooms to be lower than the concentration of the corresponding component in the outside.

[0011] As a further improvement of the present invention, one of the fresh-keeping compartments includes a first air inlet, a first return air outlet and a first air outlet, the fresh-keeping module includes a return air outlet, and the other fresh-keeping compartment includes a second air inlet, the air outlet is connected to the first air inlet, the first return air outlet is connected to the return air outlet, and the first air outlet is connected to the second air inlet.

[0012] As a further improvement of the present invention, the other fresh-keeping compartment further includes a second air return port, and the second air return port is connected to the air return port.

[0013] As a further improvement of the present invention, the refrigeration device further comprises a fluid driving member, and the fluid driving member drives the airflow in the one fresh-keeping compartment to blow toward the other fresh-keeping compartment.

[0014] As a further improvement of the present invention, the fluid driving member controls the airflow rate so that the gas concentration in the other fresh-keeping compartment is lower than the concentration of the corresponding component in the outside and higher than the concentration of the corresponding component in the one fresh-keeping compartment.

[0015] As a further improvement of the present invention, the fluid driving component is configured as a fan or an air pump.

[0016] As a further improvement of the present invention, the one fresh-keeping compartment further includes a third air inlet, and the other fresh-keeping compartment further includes a second air outlet, and the second air outlet is connected to the third air inlet.

[0017] As a further improvement of the present invention, one of the fresh-keeping compartments includes a first air inlet and a first air outlet, the fresh-keeping module includes a return air outlet, and the other fresh-keeping compartment includes a second air inlet and a second return air outlet, the air outlet is connected to the first air inlet, the first air outlet is connected to the second air inlet, and the second return air outlet is connected to the return air outlet.

[0018] As a further improvement of the present invention, the gas concentration of the fresh-keeping gas adjustment is oxygen concentration;

[0019] A first drawer is provided in the other fresh-keeping compartment, and the opening of the first drawer is upward. The other fresh-keeping compartment is provided below the one fresh-keeping compartment, the opening of the first air outlet is downward, and the opening of the second air inlet is upward, and the gas flowing into the second air inlet enters the opening downward.

[0020] As a further improvement of the present invention, the fresh-keeping module adjusts the gas concentration in one of the fresh-keeping rooms to be higher than the concentration of the corresponding component in the outside.

[0021] As a further improvement of the present invention, one of the fresh-keeping compartments includes a first air inlet and a first air outlet, and the other fresh-keeping compartment includes a second air inlet, the air outlet is connected to the first air inlet, and the first air outlet is connected to the second air inlet.

[0022] As a further improvement of the present invention, the fresh-keeping module is accommodated in one of the fresh-keeping compartments, the fresh-keeping module also includes an air inlet and an exhaust port, the one fresh-keeping compartment includes a first air outlet, the other fresh-keeping compartment includes a second air inlet, the air outlet discharges the fresh-keeping gas in the one fresh-keeping compartment, the air inlet and the exhaust port are connected to the outside air, and the first air outlet is connected to the second air inlet.

[0023] As a further improvement of the present invention, another fresh-keeping compartment among the plurality of fresh-keeping compartments is connected to the air outlet;

[0024] or,

[0025] Another fresh-keeping compartment among the plurality of fresh-keeping compartments is connected in series with the one fresh-keeping compartment or the another fresh-keeping compartment by airflow.

[0026] Compared with the prior art, the present invention has the following beneficial effects: by improving the structure and gas path design of the refrigeration equipment, multiple fresh-keeping compartments are connected in series, and the gas concentration changes in one fresh-keeping compartment affect the gas concentration of other fresh-keeping compartments, thereby achieving dynamic and flexible adjustment. There is no need for the fresh-keeping module to regulate each fresh-keeping compartment with each set of independent pipelines and control structures, so that the gas concentration of each fresh-keeping compartment can be adjusted with very low pipeline layout difficulty. In addition, a stable gas gradient can be formed between the fresh-keeping compartments, meeting the requirements of different food ingredients for different fresh-keeping environments in the same equipment, improving the fresh-keeping performance of the equipment, reducing production and control costs, and providing users with a more flexible usage experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural block diagram of multiple fresh-keeping compartments and fresh-keeping modules in Example 1 of the present utility model;

[0028] Figure 2Is the structure diagram of multiple fresh-keeping compartments and fresh-keeping module groups of the embodiment 1 of the utility model;

[0029] Figure 3 Is the explosion view of another fresh-keeping compartment and fresh-keeping module group of the embodiment 1 of the utility model;

[0030] Figure 4 Is the plan view of another fresh-keeping compartment and fresh-keeping module group of the embodiment 1 of the utility model;

[0031] Figure 5 Is the sectional view of another fresh-keeping compartment and fresh-keeping module group of the embodiment 1 of the utility model;

[0032] Figure 6 Is Figure 5 The local enlarged view of A place in middle;

[0033] Figure 7 Is the structure diagram of one fresh-keeping compartment of the embodiment 1 of the utility model;

[0034] Figure 8 Is the structure block diagram of multiple fresh-keeping compartments and fresh-keeping module groups of the embodiment 2 of the utility model;

[0035] Figure 9 Is the structure block diagram of multiple fresh-keeping compartments and fresh-keeping module groups of the embodiment 3 of the utility model;

[0036] Figure 10 Is the structure block diagram of multiple fresh-keeping compartments and fresh-keeping module groups of the embodiment 4 of the utility model;

[0037] Figure 11 Is the explosion view of multiple fresh-keeping compartments and fresh-keeping module groups of the embodiment 4 of the utility model;

[0038] Figure 12 Is the sectional view of multiple fresh-keeping compartments and fresh-keeping module groups of the embodiment 4 of the utility model;

[0039] Figure 13 Is the structure block diagram of multiple fresh-keeping compartments and fresh-keeping module groups of the embodiment 5 of the utility model;

[0040] Figure 14 Is the structure block diagram of multiple fresh-keeping compartments and fresh-keeping module groups of the embodiment 6 of the utility model;

[0041] Figure 15 Is the structure block diagram of multiple fresh-keeping compartments and fresh-keeping module groups of the embodiment 7 of the utility model;

[0042] Figure 16 Is the structure block diagram of multiple fresh-keeping compartments and fresh-keeping module groups of the embodiment 8 of the utility model;

[0043] Wherein, 10, one fresh-keeping chamber; 11, first air inlet; 12, first return air outlet; 13, first air outlet; 14, third air inlet; 15, second drawer; 20, another fresh-keeping chamber; 21, second air inlet; 22, second return air outlet; 23, second air outlet; 24, first drawer; 30, fresh-keeping module; 31, air outlet; 32, return air inlet; 33, air inlet; 34, exhaust air outlet; 40, fluid driving element; 41, windward end face; 42, air outlet end; 50, sealing element; 60, still another fresh-keeping chamber. DETAILED DESCRIPTION

[0044] The utility model will be described in detail below in combination with the specific embodiments shown in the drawings. However, these embodiments do not limit the utility model, and the changes in structure, method or function made by those skilled in the art based on these embodiments are all included in the protection scope of the utility model.

[0045] It should be understood that the terms for indicating spatial relative positions such as "upper", "above", "lower" and "below" used herein are used for the purpose of facilitating the description of the relationship between one unit or feature and another unit or feature as shown in the drawings. The terms for indicating spatial relative positions can be intended to include different positions of the device in use or operation other than the positions shown in the drawings.

[0046] The utility model provides a kind of refrigeration equipment that can conveniently regulate and control fresh-keeping gas concentration to multiple fresh-keeping chambers, and the adjustment process is convenient. Air flow guidance from one fresh-keeping chamber 10 to another fresh-keeping chamber 20 is realized, which facilitates the formation of multiple oxygen concentration gradients in multiple chambers. It not only meets the different preservation needs of various food materials, but also improves the preservation effect and energy efficiency of the equipment.

[0047] The refrigeration equipment of the embodiment can be a refrigerator, a freezer, a wine cabinet, a refrigerated cabinet, etc. Hereinafter, the refrigeration equipment is taken as a refrigerator for example.

[0048] The refrigerator includes a refrigeration system, an inner container, a refrigeration chamber, multiple fresh-keeping chambers, a cooling assembly and a fresh-keeping module 30. The refrigeration system includes a compressor, a condenser, a capillary tube, an evaporator, a refrigeration pipeline, etc. The refrigeration chamber can be a refrigeration chamber, a freezing chamber, a variable-temperature chamber, etc. Hereinafter, the refrigeration chamber is taken as a refrigeration chamber for example.

[0049] The fresh-keeping module 30 includes an outlet 31 for outputting fresh-keeping gas. The fresh-keeping gas output by the fresh-keeping module 30 can be adjusted to have a gas concentration that includes oxygen concentration, carbon dioxide concentration, water vapor concentration, nitrogen concentration, oxygen and water vapor concentration, or carbon dioxide and water vapor concentration. Different fresh-keeping gases can be used to meet the freshness requirements of different types of food. For example, adjusting the oxygen concentration helps prolong the freshness of meat, while adjusting the carbon dioxide concentration can inhibit the respiration of fruits and vegetables, thereby extending their shelf life. Controlling the water vapor concentration maintains the humidity in the fresh-keeping room, preventing the food from drying out due to dehydration. In other words, the fresh-keeping gas corresponding to the fresh-keeping module 30 provides a variety of fresh-keeping modes. On the one hand, it meets the need for fine-tuning different gas compositions, and on the other hand, the structure is highly versatile and can be applied to different structures. Adjusting the nitrogen concentration also corresponds to changes in the oxygen content. For example, a higher nitrogen concentration corresponds to a lower oxygen content. The purpose of adjusting the nitrogen concentration is the same as that of adjusting the oxygen concentration.

[0050] The inner container encloses a refrigeration compartment with an opening, and multiple fresh-keeping compartments can be located in the refrigeration compartments. The fresh-keeping compartments can accommodate drawers that can be pulled out or moved into the fresh-keeping compartments. The fresh-keeping module 30 is relatively isolated from the refrigeration compartment environment. In other words, without considering absolute airtightness, the space within each fresh-keeping compartment is relatively isolated from the space within the refrigeration compartment. In addition, since absolute airtightness is not required, the internal air pressure will not increase sharply after gas is introduced into the fresh-keeping compartment.

[0051] One of the multiple fresh-keeping compartments 10 is connected to the air outlet 31 , and the fresh-keeping compartment 10 is connected to another fresh-keeping compartment 20 in series. The concentration of the fresh-keeping gas in the other fresh-keeping compartment 20 changes with the concentration of the fresh-keeping gas in the one fresh-keeping compartment 10 .

[0052] The airflow between the multiple fresh-keeping compartments is connected in series, ensuring that the fresh-keeping gas output by the fresh-keeping module 30 can flow through each compartment in sequence, thereby achieving dynamic and coordinated adjustment of the gas concentration within the different fresh-keeping compartments. The series structure between the compartments simplifies the overall layout of the gas circuit, reduces the number of independent gas circuits within the device, and reduces system complexity and manufacturing costs. This series design ensures that each fresh-keeping compartment can automatically adjust as the gas concentration in the previous compartment changes, ensuring that the device can flexibly adapt to the fresh-keeping needs of different ingredients. In particular, it achieves excellent fresh-keeping effects in scenarios where the concentration of fresh-keeping gases such as oxygen or carbon dioxide needs to be precisely controlled.

[0053] The fresh-keeping module 30 adjusts the gas concentration within one of the fresh-keeping compartments 10 to be lower or higher than the concentration of the corresponding component in the surrounding environment. For example, if the fresh-keeping gas primarily adjusts the oxygen concentration, the fresh-keeping module 30 can adjust the oxygen concentration within one of the fresh-keeping compartments 10 to be lower or higher than the oxygen concentration in the surrounding environment. For example, if the fresh-keeping gas primarily adjusts the carbon dioxide concentration, the fresh-keeping module 30 can adjust the carbon dioxide concentration within one of the fresh-keeping compartments 10 to be lower or higher than the carbon dioxide concentration in the surrounding environment. For example, if the fresh-keeping gas primarily adjusts the water vapor concentration, the fresh-keeping module 30 can adjust the humidity within one of the fresh-keeping compartments 10 to be lower or higher than the humidity in the surrounding environment.

[0054] In the following, the adjustment of oxygen concentration is used as an example for explanation. The fresh-keeping module 30 is an oxygen regulating module for adjusting the oxygen concentration. Taking the fresh-keeping module 30 for adjusting a low-oxygen environment as an example, through precise control of the oxygen concentration, a stable low-oxygen environment can be provided for the stored food, inhibiting its respiration and prolonging the fresh-keeping time. The benefit of a low-oxygen environment is that it can significantly reduce the oxidation rate of food and reduce the reproduction of microorganisms. In particular, for some fruits and vegetables that are prone to spoilage, the fresh-keeping effect in this environment is particularly significant. Since this solution can accurately control the oxygen concentration, it avoids the problem of unstable food quality due to excessive fluctuations in oxygen concentration in traditional equipment, thereby ensuring a long-term fresh-keeping effect.

[0055] Taking the fresh-keeping module 30 as an example, some ingredients, such as fresh pork, beef, and mutton, are better stored in environments with higher oxygen concentrations. The higher oxygen concentration in the high-oxygen packaging can inhibit the growth and reproduction of anaerobic bacteria. The higher oxygen concentration can also 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. At the same time, the higher oxygen concentration protects the meat's color, because lower oxygen concentrations induce the oxidation of deoxymyoglobin into metmyoglobin. Under conditions of higher oxygen concentrations, the surface of the meat is primarily composed of oxymyoglobin, which does not directly oxidize to metmyoglobin. The fresh-keeping module 30 can also be used to adjust the oxygen concentration in one fresh-keeping compartment 10 and another fresh-keeping compartment 20, so that the oxygen concentration in each compartment is higher than the external oxygen concentration.

[0056] In addition, the fresh-keeping module 30 includes at least one anode and at least one cathode, the anode is controllably connected to the positive pole of the power supply, and the cathode is controllably connected to the negative pole of the power supply.

[0057] In this way, when the controller controls the fresh-keeping module 30 to operate, under the control of the controller, the positive pole of the power supply is connected to the anode and the negative pole of the power supply is connected to the cathode, that is, the power supply supplies power to the fresh-keeping module 30; and when the controller controls the fresh-keeping module 30 to stop, under the control of the controller, the positive pole cut end of the power supply is connected to the anode and the negative pole cut end of the power supply is connected to the cathode, that is, the power supply stops supplying power to the fresh-keeping module 30.

[0058] The fresh-keeping module 30 further includes an inner cavity capable of accommodating at least an electrolyte, a first side of the cathode is exposed to the inner cavity, and a second side is exposed to the air outside the fresh-keeping module 30 .

[0059] When the fresh-keeping module 30 is in operation, that is, when powered on, the cathode is used to consume oxygen in the air outside the fresh-keeping module 30 through an electrochemical reaction. Specifically, oxygen undergoes a reduction reaction at the cathode, and the reaction formula is O2+2H2O+4e - →4OH - In this way, an oxygen-deficient fresh-keeping atmosphere can be formed outside the oxygen regulating module 30.

[0060] One side or both sides of the anode are exposed to the inner cavity, and the anode is used to generate oxygen in the inner cavity through electrochemical reaction to form an oxygen-rich fresh-keeping atmosphere. Specifically, OH in the electrolyte - Oxidation reaction can occur at the anode and generate oxygen, the reaction formula is 4OH - →O2+2H2O+4e - The generated oxygen is collected to form an oxygen-rich fresh-keeping atmosphere.

[0061] In this way, the oxygen concentration can be adjusted according to demand, and a suitable oxygen-poor or oxygen-rich preservation atmosphere can be selected.

[0062] The following describes a number of embodiments. Examples 1 to 4 mainly describe the adjustment of two fresh-keeping compartments in a low-oxygen environment, Examples 5 to 6 mainly describe the adjustment of two fresh-keeping compartments in a high-oxygen environment, and Examples 7 to 8 mainly describe more various connection methods of three fresh-keeping compartments.

[0063] Example 1

[0064] like Figures 1 to 7 As shown, one fresh-keeping compartment 10 includes a first air inlet 11, a first air return outlet 12 and a first air outlet 13, the fresh-keeping module 30 includes an air return outlet 32, and the other fresh-keeping compartment 20 includes a second air inlet 21, the air outlet 31 is connected to the first air inlet 11, the first return air outlet 12 is connected to the air return outlet 32, and the first air outlet 13 is connected to the second air inlet 21.

[0065] The first fresh-keeping compartment 10 is connected to the fresh-keeping module 30 and the second fresh-keeping compartment 20 via a first air inlet 11, a first return air vent 12, and a first air outlet 13, forming a complete gas circulation system. This ensures efficient gas flow between the fresh-keeping module 30, the first fresh-keeping compartment, and the second fresh-keeping compartment, ensuring controllable gas concentration fluctuations within the two compartments. After entering the first fresh-keeping compartment 10, a portion of the gas returns to the fresh-keeping module 30 through the first return air vent 12, forming a closed loop. The remaining portion of the gas flows through the first air outlet 13 to the second fresh-keeping compartment 20, thus achieving stable control of the gas composition. With this structure, the oxygen concentration in the second fresh-keeping compartment 20 is higher than that in the first fresh-keeping compartment 10, but lower than the ambient oxygen concentration.

[0066] like Figures 3 to 6 As shown, the refrigeration device further includes a fluid driving member 40 , which drives the airflow in one fresh-keeping compartment 10 to blow toward the other fresh-keeping compartment 20 .

[0067] To clearly express the positions and directions described in this embodiment, up and down are defined relative to the direction of gravity. That is, the direction of gravity is down, and the direction opposite to gravity is up. When a user operates items inside the refrigerator, the user stands in front of the refrigerator, and the direction opposite to gravity is the back. The left and right sides of the planes containing front, back, and top are respectively. Correspondingly, drawers are pushed and pulled in the front-to-back direction.

[0068] The fluid driving member 40 controls the flow rate of the air flow so that the concentration of the gas in the other fresh-keeping compartment 20 is lower than the concentration of the corresponding component in the outside and higher than the concentration of the corresponding component in the first fresh-keeping compartment 10 .

[0069] The fluid drive element 40 drives the airflow within one fresh food compartment 10 toward the other fresh food compartment 20. Specifically, during the oxygen concentration adjustment process, the oxygen concentration in the first fresh food compartment 10 can be adjusted to a lower concentration. Then, under the action of the fluid drive element 40, the air with the lower oxygen concentration is blown toward the other fresh food compartment 20. This ensures that the oxygen concentration in the other fresh food compartment 20 will not be lower than that in the first cavity. Furthermore, by controlling the rotation speed and operating time of the fluid drive element 40, the oxygen concentration in the other fresh food compartment 20 can be adjusted to any value within a range between the atmospheric oxygen concentration and the oxygen concentration in the first fresh food compartment 10. This precise adjustment allows for different oxygen concentration ranges to be formed within the first fresh food compartment 10 and the other fresh food compartment 20, enabling flexible and cost-effective adjustment of different oxygen concentration environments within the same refrigeration equipment.

[0070] In this configuration, one fresh-keeping compartment 10 has the lowest oxygen concentration and can be used to store ingredients most sensitive to oxygen concentration, such as fresh-cut fruits and tender leafy vegetables. Meanwhile, the other fresh-keeping compartment 20 has a slightly higher oxygen concentration, but still lower than the ambient air, and can be used to store general fruits, vegetables, or meat. This gradient oxygen concentration distribution effectively suppresses the oxidation rate and respiration of different types of ingredients, while also avoiding cross-contamination between ingredients caused by uneven oxygen concentrations. Furthermore, by adjusting the operating state of the fluid drive element 40 and the output parameters of the oxygen regulation module, the oxygen concentration can be flexibly adjusted to meet the diverse needs of different scenarios, significantly improving the preservation of ingredients.

[0071] A first drawer 24 is provided in the other fresh-keeping compartment 20, and the opening of the first drawer 24 is upward. The other fresh-keeping compartment 20 is provided below one of the fresh-keeping compartments 10, the opening of the first air outlet 13 is downward, and the opening of the second air inlet 21 is upward, and the gas flowing into the second air inlet 21 enters the opening downward.

[0072] By connecting the first air outlet 13 of one fresh-keeping compartment 10 with the second air inlet 21 of the other fresh-keeping compartment 20, vertical airflow is achieved. This vertical layout saves horizontal space, effectively utilizing the refrigeration equipment's longer vertical structure, improving the efficiency of the equipment's internal space, and simplifying the design of the airflow channel, facilitating subsequent maintenance and management.

[0073] Furthermore, the fluid driving component 40 is configured as a fan or an air pump. Taking a centrifugal fan as an example, the windward end face 41 of the centrifugal fan faces the first air outlet 13, and the air outlet end 42 on the side of the centrifugal fan faces the second air inlet 21. Taking advantage of the centrifugal fan's ability to provide a strong centrifugal force, the centrifugal fan can provide a higher static pressure when rotating at high speed, so that the airflow in the channel flows more smoothly, and a stable and strong airflow can be generated in a smaller volume of space, so that the fresh-keeping gas is quickly and evenly distributed in one fresh-keeping compartment 10 and the other fresh-keeping compartment 20, ensuring that the oxygen concentration in the other fresh-keeping compartment 20 is quickly adjusted to the right position. In addition, the centrifugal fan can also flexibly change the flow rate and flow of the airflow by adjusting the rotational speed, thereby more accurately controlling the flow state of the gas between the two fresh-keeping compartments. As Figure 5 As shown, the windward end face 41 of the centrifugal fan faces the air outlet, and the air outlet end 42 on the side of the centrifugal fan faces the air inlet. Figure 3As shown, the centrifugal fan is arranged in the central area of ​​the upper wall, so that the airflow is evenly diffused in all directions, avoiding the problem of high or low oxygen concentration in certain areas due to fan bias. After such gas is blown into the other fresh-keeping compartment 20, the airflow forms a stable circulation structure in the other fresh-keeping compartment 20 and blows spirally toward the entire first drawer 24, thereby improving the uniformity of oxygen in the other fresh-keeping compartment 20, ensuring that the gas in every corner of the first drawer 24 can be fully exchanged, and improving the overall uniformity and efficiency of oxygen regulation.

[0074] In addition, if Figure 2 As shown, a second drawer 15 can be provided in one of the fresh-keeping compartments 10. Figure 7 As shown, the first air inlet 11, the first air return port 12, and the first air outlet 13 are all arranged at the bottom of one of the fresh-keeping compartments 10. In this way, the fresh-keeping gas is blown downward into the other fresh-keeping compartment 20 after fully filling the space in the one fresh-keeping compartment 10. The arrangement of the first air inlet 11, the first air return port 12, and the first air outlet 13 does not affect the pushing and pulling of the second drawer 15.

[0075] A seal 50 can be provided at the connection between one fresh-keeping compartment 10 and the other fresh-keeping compartment 20 to ensure sealing, thereby isolating the fresh-keeping gas from the refrigeration compartment in the refrigerator, preventing irregular airflow and avoiding gas leakage.

[0076] In this embodiment, only fresh-keeping gas is blown from one fresh-keeping compartment 10 to the other fresh-keeping compartment 20. There are no other air outlets in the other fresh-keeping compartment 20. The inflow of gas with a lower oxygen concentration forces the gas with a higher oxygen content inside out through the gap into the refrigeration compartment, preventing excessive pressure buildup in the other fresh-keeping compartment 20. The provision of the fluid drive element 40 ensures that the fresh-keeping gas is more powerfully blown into the other fresh-keeping compartment 20.

[0077] Example 2

[0078] Example 2 Figure 8 As shown, based on the embodiment 1, it further includes: another fresh-keeping compartment 20 further includes a second return air port 22 , and the second return air port 22 is connected to the return air port 32 .

[0079] Example 2 adds a return air vent to another fresh-keeping compartment 20, allowing the fresh-keeping gas to form a circulation loop within the other fresh-keeping compartment 20 similar to that of the first fresh-keeping compartment 10. This dual-loop design further improves the efficiency of gas concentration regulation, ensuring that the gas concentration in both fresh-keeping compartments can be precisely controlled. This is particularly suitable for food that needs to be kept fresh for a long time, as the return air circulation can maintain the stability of the gas concentration.

[0080] Example 3

[0081] Example 3 Figure 9As shown, based on embodiment 1, it further includes: one fresh-keeping compartment 10 further includes a third air inlet 14 , and the other fresh-keeping compartment 20 further includes a second air outlet 23 , and the second air outlet 23 is connected to the third air inlet 14 .

[0082] In Example 3, multiple air inlets and outlets are positioned between the two fresh-keeping compartments to ensure adequate circulation and flow of fresh-keeping gas. This design is particularly suitable for fresh-keeping applications requiring continuous gas exchange, such as for food that requires rapid temperature or humidity reduction. Low-oxygen gas blown from one fresh-keeping compartment 10 into the other, 20, can then return to the first fresh-keeping compartment 10, facilitating gas flow. Through multiple gas channels, the device can more effectively regulate the gas concentration and temperature within the compartments, further enhancing the fresh-keeping effect.

[0083] Example 4

[0084] Example 4 Figures 10-12 As shown, one fresh-keeping compartment 10 includes a first air inlet 11 and a first air outlet 13, the fresh-keeping module 30 includes an air return port 32, and the other fresh-keeping compartment 20 includes a second air inlet 21 and a second air return port 22, the air outlet 31 is connected to the first air inlet 11, the first air outlet 13 is connected to the second air inlet 21, and the second air return port 22 is connected to the air return port 32. Figure 12 In the embodiment, a second air return port 22 is provided on the right side of the other fresh-keeping compartment 20 , that is, on the side close to the fresh-keeping module 30 , and the fresh-keeping module 30 is provided with an air return port 32 toward the other fresh-keeping compartment 20 .

[0085] The difference between Example 4 and Example 1 is that one of the fresh-keeping compartments 10 does not simultaneously serve as both the air supply and return functions. Instead, the other fresh-keeping compartment 20 serves as the return function. Fresh-keeping gas is blown from the fresh-keeping module 30 into one of the fresh-keeping compartments 10, then into the other fresh-keeping compartment 20, and then back to the fresh-keeping module 30 to complete the cycle. This ensures that the gas concentration in each compartment is almost the same, especially in scenarios where the same oxygen concentration is required in multiple compartments, which can avoid the problem of uneven gas concentration.

[0086] Example 5

[0087] Example 5 Figure 13 As shown, the fresh-keeping module 30 adjusts the gas concentration in one of the fresh-keeping compartments 10 to be higher than the concentration of the corresponding component in the outside. Specifically, the oxygen concentration can be higher than the oxygen concentration in the outside. Oxygen can inhibit the growth of anaerobic bacteria, thereby extending the shelf life of meat.

[0088] One fresh-keeping compartment 10 includes a first air inlet 11 and a first air outlet 13 , and the other fresh-keeping compartment 20 includes a second air inlet 21 , an air outlet 31 connected to the first air inlet 11 , and the first air outlet 13 connected to the second air inlet 21 .

[0089] The difference between Example 5 and Examples 1 to 4 is that, in a high oxygen environment, the fresh-keeping gas output by the fresh-keeping module 30 can be pure oxygen. Once the oxygen enters the fresh-keeping compartment, no matter how much, the oxygen concentration in the compartment can be quickly increased, so there is no need for a return air design. Figure 13 In the embodiment, the gas only needs to flow from the fresh-keeping module 30 into one fresh-keeping compartment 10 and the other fresh-keeping compartment 20 in sequence.

[0090] In addition, since the purity of oxygen entering the other fresh-keeping compartment 20 is lower than that entering the one fresh-keeping compartment 10, the oxygen concentration in the one fresh-keeping compartment 10 is naturally higher than the oxygen concentration in the other fresh-keeping compartment 20. In this way, a stable oxygen gradient is formed between the fresh-keeping compartments. Then, each compartment is filled with food with the most suitable oxygen concentration. Through a simple pipeline design, the storage environment requirements of different food ingredients are met, and the preservation needs of meat and other food ingredients that require a high-oxygen environment are met.

[0091] Example 6

[0092] Example 6 Figure 14 As shown, the fresh-keeping module 30 is accommodated in one of the fresh-keeping compartments 10. The fresh-keeping module 30 also includes an air inlet 33 and an exhaust port 34. One of the fresh-keeping compartments 10 includes a first air outlet 13, and the other fresh-keeping compartment 20 includes a second air inlet 21. The air outlet 31 discharges the fresh-keeping gas in the one fresh-keeping compartment 10. The air inlet 33 and the exhaust port 34 are connected to the external air. The first air outlet 13 is connected to the second air inlet 21.

[0093] By placing the fresh-keeping module 30 directly within one of the fresh-keeping compartments 10, the efficiency of regulating gas concentration is further improved, reducing potential gas loss during flow, and ensuring that the fresh-keeping gas can quickly and efficiently reach the food. Furthermore, the air inlet 33 and exhaust 34 of the fresh-keeping module 30 are connected to the outside world, ensuring that the device continuously receives fresh air during operation, thereby maintaining the stability of the gas composition.

[0094] Example 7

[0095] Example 7 Figure 15 As shown, another fresh-keeping compartment 60 among the multiple fresh-keeping compartments is connected in series with one fresh-keeping compartment 10 or another fresh-keeping compartment 20 thereof.

[0096] The further fresh-keeping compartment 60 can be the third, fourth, or even the Nth fresh-keeping compartment, expanding the device's gas regulation capabilities. The further fresh-keeping compartment 60 is connected to the further fresh-keeping compartment 20. This allows the device to achieve different gas concentration distributions within the multiple fresh-keeping compartments. For example, in low-oxygen gas, the oxygen concentration is in the order of one fresh-keeping compartment 10 < another fresh-keeping compartment 20 < the third fresh-keeping compartment 60 < the outside world, further enhancing the device's fresh-keeping capabilities and meeting a wider variety of food needs. Furthermore, this series-type gas regulation structure can be further extended to achieve multi-stage series connection, allowing the gas concentration of each fresh-keeping compartment to be adjusted with minimal piping layout difficulty. This design ensures that the device can still provide simple and precise multi-stage gas regulation even with multiple compartments.

[0097] Example 8

[0098] Example 8 Figure 16 As shown, another fresh-keeping compartment 60 among the multiple fresh-keeping compartments is connected to the air outlet 31. That is to say, in more embodiments, the multiple fresh-keeping compartments of the refrigeration device can be connected in series or in parallel. For example, there are multiple fresh-keeping compartments directly connected to the fresh-keeping module 30. Taking low-oxygen gas as an example, the oxygen concentration is in the following order: one fresh-keeping compartment 10 = another fresh-keeping compartment 60 < another fresh-keeping compartment 20 < the outside world, thereby meeting more diverse food needs.

[0099] Compared with the conventional technology, this embodiment has the following beneficial effects:

[0100] By improving the structure and gas path design of the refrigeration equipment, multiple fresh-keeping compartments are connected in series. The gas concentration in one fresh-keeping compartment 10 changes and affects the gas concentration in other fresh-keeping compartments, thereby achieving dynamic and flexible adjustment. There is no need for the fresh-keeping module 30 to control each fresh-keeping compartment with each set of independent pipelines and control structures. As a result, the gas concentration in each fresh-keeping compartment can be adjusted with very low pipeline layout difficulty. In addition, a stable gas gradient can be formed between the fresh-keeping compartments, meeting the requirements of different food ingredients for different fresh-keeping environments in the same equipment, improving the fresh-keeping performance of the equipment, reducing production and control costs, and providing users with a more flexible usage experience.

[0101] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0102] The series of detailed descriptions listed above are only specific descriptions for the feasible implementation manners of the present application, and are not used to limit the protection scope of the present application. Any equivalent implementation manners or changes made without departing from the spirit of the present application should be included in the protection scope of the present application.

Claims

1. A refrigeration device, characterized in that: include: Multiple fresh-keeping compartments; A fresh-keeping module (30) includes an outlet (31) for outputting fresh-keeping gas, one of the fresh-keeping compartments (10) is connected to the outlet (31), the one fresh-keeping compartment (10) is in airflow communication with another fresh-keeping compartment (20), and the concentration of the fresh-keeping gas in the other fresh-keeping compartment (20) changes with the concentration of the fresh-keeping gas in the one fresh-keeping compartment (10).

2. The refrigeration equipment according to claim 1, characterized in that The one fresh-keeping compartment (10) is connected to the other fresh-keeping compartment (20) in a series manner, and the airflow output from the fresh-keeping module (30) passes through the one fresh-keeping compartment (10) and then reaches the other fresh-keeping compartment (20).

3. The refrigeration equipment according to claim 2, characterized in that The fresh-keeping gas output by the fresh-keeping module (30) is used to adjust the gas concentration including oxygen concentration, carbon dioxide concentration, water vapor concentration, nitrogen concentration, oxygen concentration and water vapor concentration, or carbon dioxide concentration and water vapor concentration.

4. The refrigeration equipment according to claim 3, characterized in that The fresh-keeping module (30) adjusts the gas concentration in one of the fresh-keeping compartments (10) to be lower than the concentration of the corresponding component in the outside.

5. The refrigeration equipment according to claim 4, characterized in that: The first fresh-keeping compartment (10) comprises a first air inlet (11), a first air return outlet (12) and a first air outlet (13); the fresh-keeping module (30) comprises an air return outlet (32); the other fresh-keeping compartment (20) comprises a second air inlet (21); the air outlet (31) is connected to the first air inlet (11); the first air return outlet (12) is connected to the air return outlet (32); and the first air outlet (13) is connected to the second air inlet (21).

6. The refrigeration equipment according to claim 5, characterized in that The other fresh-keeping compartment (20) further comprises a second air return port (22), and the second air return port (22) is connected to the air return port (32).

7. The refrigeration equipment according to claim 5 or 6, characterized in that: The refrigeration device further comprises a fluid driving component (40), wherein the fluid driving component (40) drives the airflow in the one fresh-keeping compartment (10) to blow toward the other fresh-keeping compartment (20).

8. The refrigeration equipment according to claim 7, characterized in that The fluid driving member (40) controls the airflow rate so that the gas concentration in the other fresh-keeping compartment (20) is lower than the concentration of the corresponding component in the outside and higher than the concentration of the corresponding component in the first fresh-keeping compartment (10); The fluid driving member (40) is configured as a fan or an air pump.

9. The refrigeration equipment according to claim 5, characterized in that The one fresh-keeping compartment (10) further comprises a third air inlet (14), and the other fresh-keeping compartment (20) further comprises a second air outlet (23), wherein the second air outlet (23) is connected to the third air inlet (14).

10. The refrigeration equipment according to claim 4, characterized in that The first fresh-keeping compartment (10) comprises a first air inlet (11) and a first air outlet (13); the fresh-keeping module (30) comprises an air return port (32); the other fresh-keeping compartment (20) comprises a second air inlet (21) and a second air return port (22); the air outlet (31) is connected to the first air inlet (11); the first air outlet (13) is connected to the second air inlet (21); and the second air return port (22) is connected to the air return port (32).

11. The refrigeration equipment according to claim 5 or 10, characterized in that: The gas concentration of the fresh-keeping gas adjustment is oxygen concentration; A first drawer (24) is provided in the other fresh-keeping compartment (20), the opening of the first drawer (24) is upward, the other fresh-keeping compartment (20) is provided below the one fresh-keeping compartment (10), the opening of the first air outlet (13) is downward, the opening of the second air inlet (21) is upward, and the gas flowing into the second air inlet (21) enters the opening downward.

12. The refrigeration equipment according to claim 3, characterized in that The fresh-keeping module (30) adjusts the gas concentration in one of the fresh-keeping compartments (10) to be higher than the concentration of the corresponding component in the outside.

13. The refrigeration equipment according to claim 12, characterized in that The one fresh-keeping compartment (10) comprises a first air inlet (11) and a first air outlet (13), the other fresh-keeping compartment (20) comprises a second air inlet (21), the air outlet (31) is connected to the first air inlet (11), and the first air outlet (13) is connected to the second air inlet (21).

14. The refrigeration equipment according to claim 12, characterized in that The fresh-keeping module (30) is accommodated in one of the fresh-keeping compartments (10), and the fresh-keeping module (30) further comprises an air inlet (33) and an air outlet (34). The one fresh-keeping compartment (10) comprises a first air outlet (13), and the other fresh-keeping compartment (20) comprises a second air inlet (21). The air outlet (31) discharges fresh-keeping gas in the one fresh-keeping compartment (10). The air inlet (33) and the air outlet (34) are in communication with external air, and the first air outlet (13) is connected to the second air inlet (21).

15. The refrigeration equipment according to claim 2, characterized in that Another fresh-keeping compartment (60) among the plurality of fresh-keeping compartments is connected to the air outlet (31); or, Another fresh-keeping compartment (60) among the plurality of fresh-keeping compartments is connected in series with the one fresh-keeping compartment (10) or the other fresh-keeping compartment (20) via airflow.

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