Refrigeration equipment and humidity adjusting method thereof

Abstract

The humidity adjusting method comprises the steps that the humidity of a fresh-keeping chamber is continuously monitored, when the humidity of the fresh-keeping chamber is larger than a first humidity threshold value, whether the temperature of the fresh-keeping chamber is lower than a fresh-keeping temperature threshold value or not is judged, and if yes, after a refrigerating system is shut down and a preset time passes, the temperature of the fresh-keeping chamber is adjusted to be lower than the fresh-keeping temperature threshold value. And the cold supply assembly is switched into the first operation state. In this way, the temperature in the fresh-keeping chamber cannot be excessively reduced when being low, food materials can be effectively prevented from being frozen due to the too low temperature, the negative effect of the too low temperature on the food materials is avoided, the appropriate humidity environment in the fresh-keeping chamber is kept, the storage quality of the food materials is improved, and the fresh-keeping period of the food materials is prolonged.

Description

Technical Field

[0001] This invention relates to a refrigeration device, and more particularly to a method for regulating humidity in a refrigeration device. Background Technology

[0002] Existing refrigeration equipment typically uses a single temperature control method, directly cooling the storage space through the refrigeration system to meet the preservation needs of food. Some fruits and vegetables can better maintain their freshness in a high-humidity environment, which can prevent them from dehydrating and shriveling due to moisture loss. Therefore, the market demand for refrigeration equipment that can provide a high-humidity environment is gradually increasing.

[0003] However, there may be some issues regarding the relationship between humidity control and refrigeration in the fresh food storage compartment. On the one hand, the fresh food storage compartment needs to be relatively isolated from other environments within the refrigeration equipment to form a relatively sealed space to achieve relatively high humidity. However, the humidity inside the fresh food storage compartment should not be too high, otherwise condensation and frost will occur. On the other hand, if the humidity and temperature controls in the fresh food storage compartment are not properly coordinated, the internal temperature may become too high or too low when humidity is adjusted. This can range from affecting the preservation effect to causing food to freeze or spoil. Therefore, properly controlling the appropriate humidity in the fresh food storage compartment and coordinating humidity and temperature controls will negatively impact the user experience if these issues are not properly addressed. Summary of the Invention

[0004] To address the issues of humidity and temperature regulation in the existing technology, the present invention aims to provide a refrigeration device and its humidity regulation method that can effectively regulate humidity and avoid excessively low temperatures.

[0005] To achieve the above-mentioned objective, one embodiment of the present invention provides a refrigeration device, comprising:

[0006] A humidity sensor is used to continuously monitor the humidity of the fresh food compartment. The humidity difference between the fresh food compartment and the refrigeration compartment is adjusted by a moisture permeation module. When the cooling component is in the first operating state, cold air from the refrigeration system is blown through the moisture permeation module.

[0007] The processing module is used to determine whether the temperature of the fresh-keeping room is lower than the fresh-keeping temperature threshold when the humidity of the fresh-keeping room is greater than the first humidity threshold; if the temperature of the fresh-keeping room is lower than the fresh-keeping temperature threshold, the cooling component switches to the first operating state after the refrigeration system is shut down and a preset time has elapsed.

[0008] To achieve one of the above-mentioned objectives, an embodiment of the present invention provides a humidity control method for a refrigeration device, comprising the following steps:

[0009] The humidity of the fresh food storage compartment is continuously monitored. The humidity difference between the fresh food storage compartment and the refrigeration compartment is adjusted by the moisture permeation module. When the cooling component is in the first operating state, the cold air from the refrigeration system is blown through the moisture permeation module.

[0010] When the humidity of the fresh food storage room is greater than the first humidity threshold, it is determined whether the temperature of the fresh food storage room is lower than the fresh food temperature threshold.

[0011] If the temperature of the preservation chamber is lower than the preservation temperature threshold, after the refrigeration system is shut down and a preset time has elapsed, the cooling component switches to the first operating state.

[0012] As a further improvement to the present invention, the following steps are also included:

[0013] If the temperature of the fresh-keeping compartment is not lower than the fresh-keeping temperature threshold, determine whether the temperature of the refrigeration compartment is higher than the refrigeration high-temperature threshold.

[0014] If the temperature of the cooling room is higher than the high temperature threshold for cooling, the refrigeration system will operate and the cooling component will switch to the first operating state.

[0015] If the temperature of the refrigeration chamber is not higher than the high temperature threshold for refrigeration, the refrigeration system maintains its current state, and the cooling component switches to the first operating state.

[0016] As a further improvement of the present invention, the cooling assembly includes a cooling air passage, a first fan, and a first damper;

[0017] In the first operating state, the first fan is running, the first damper is open, and the cold air supplied by the cooling air path blows through the moisture permeation module (40) only flows outside the fresh food room.

[0018] As a further improvement to the present invention, the following steps are also included:

[0019] When the humidity in the preservation room is less than the second humidity threshold, the first damper is closed, wherein the second humidity threshold is less than the first humidity threshold.

[0020] As a further improvement of the present invention, the step of switching the cooling component to the first operating state after the refrigeration system has been shut down and a preset time has elapsed includes:

[0021] If the refrigeration system is currently in operation, the first damper is closed. After the refrigeration system stops and a first preset time has elapsed, the first damper opens and the first fan starts running.

[0022] As a further improvement of the present invention, the step of switching the cooling component to the first operating state after the refrigeration system has been shut down and a preset time has elapsed includes:

[0023] If the refrigeration system is currently in a shutdown state, the first damper is closed. After the refrigeration system has been shut down for a second preset time, the first damper is opened and the first fan starts running.

[0024] As a further improvement of the present invention, the second preset time is the difference between the downtime cycle time and the downtime.

[0025] As a further improvement of the present invention, the fresh-keeping compartment contains a drawer, and a moisture-permeable module is provided above the opening of the drawer. When the first air door is opened and the first fan is running, cold air blows across the surface of the moisture-permeable module.

[0026] As a further improvement of the present invention, the fresh-keeping room is supplied with an oxygen-regulating flow, which makes the oxygen concentration inside the fresh-keeping room different from the oxygen concentration outside.

[0027] To achieve one of the above-mentioned objectives, one embodiment of the present invention provides a readable storage medium storing a computer program that, when executed by a processing module, can implement the steps in the humidity adjustment method of the refrigeration device described above.

[0028] Compared with the prior art, the present invention has the following beneficial effects: When the refrigeration equipment adjusts the humidity, if the temperature of the fresh food compartment is detected to be lower than the preset temperature threshold, the time for adjusting the humidity in the fresh food compartment is delayed. After the refrigeration system stops and the preset time has elapsed, the fan is turned on to adjust the humidity. In this way, the temperature in the fresh food compartment will not drop excessively while the humidity is being adjusted, which can effectively avoid the food from freezing due to excessively low temperature, avoid the negative impact of excessively low temperature on the food, maintain a suitable humidity environment in the fresh food compartment, and improve the storage quality and freshness period of the food. Attached Figure Description

[0029] Figure 1 This is a flowchart of a humidity adjustment method for a refrigeration device according to an embodiment of the present invention;

[0030] Figure 2 This is a flowchart of a humidity adjustment method for a refrigeration device according to another embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of a refrigeration device according to an embodiment of the present invention;

[0032] Figure 4 This is a partial structural schematic diagram of a refrigeration device according to an embodiment of the present invention;

[0033] Figure 5 yes Figure 4 A sectional view of the middle section of the structure;

[0034] Figure 6 This is a bottom view of the preservation compartment according to an embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the drawer structure according to an embodiment of the present invention;

[0036] Among them, 100 is the refrigeration equipment; 10 is the fresh food compartment; 20 is the drawer; 21 is the second air inlet; 22 is the second air return outlet; 31 is the air outlet; 32 is the third air return outlet; 40 is the moisture permeation module; 50 is the air duct back panel; 51 is the air outlet; and 60 is the refrigeration compartment. Detailed Implementation

[0037] 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 scope of protection of the present invention.

[0038] One embodiment of the present invention provides a refrigeration device and a humidity regulation method thereof that can effectively regulate humidity and avoid excessively low temperatures.

[0039] The refrigeration device 100 in this embodiment can be a refrigerator, freezer, upright refrigerator, wine cabinet, etc. The following embodiment will be described using a refrigerator as an example. The overall structure of the refrigerator is as follows: Figure 3 As shown.

[0040] The refrigerator includes a refrigeration system, a refrigeration compartment 60, a fresh-keeping compartment 10, an oxygen control module, and a cooling supply component. 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 refrigerator with separate refrigeration compartments and freezer compartments, separate refrigeration evaporators and freezer evaporators are provided.

[0041] The cooling system includes a cooling air supply path, a first fan, and a first damper. When the first fan operates and the first damper opens, the cold air supplied to the fresh-keeping compartment 10 flows only outside the fresh-keeping compartment 10. Alternatively, the cooling system may also include a second fan and a second damper, wherein the first fan corresponds to the fresh-keeping compartment 10, and the second fan corresponds to the cooling compartment 60. Alternatively, when the first and second dampers are open, the first fan can simultaneously cool both the fresh-keeping compartment 10 and the cooling compartment 60. The following explanation uses an example of a single fan simultaneously supplying cooling to both the fresh-keeping compartment 10 and the cooling compartment 60.

[0042] Furthermore, the first operating state of the cooling component, as distinguished below, is when the first fan is running, the first damper is open, and the cold air blown by the cooling air path through the moisture permeation module 40 only flows outside the fresh-keeping compartment 10. In this way, the cold air from the refrigeration system is blown through the moisture permeation module to regulate humidity. At this time, the second damper can be closed. The cooling component can also have a second, third, and fourth operating states. In the second operating state, the first fan is running, the first damper is closed, and the second damper is open. In the third operating state, the first fan is running, the first damper is open, and the second damper is open. In the fourth operating state, the first fan is closed, the first damper is closed, and the second damper is closed.

[0043] Cold air can be blown into the refrigeration compartment 60 and into or out of the fresh food compartment 10. In this embodiment, the cold air flows only on the outside of the fresh food compartment 10, and the cold energy is indirectly transmitted into the interior of the fresh food compartment 10 through the outer wall of the fresh food compartment 10.

[0044] The cooling air supply circuit connects the refrigeration compartment 60 and the refrigeration system. When the second damper is open, the first fan and / or the second fan can blow the cold air from the evaporator in the evaporator chamber into the refrigeration compartment 60. The refrigeration compartment 60 can be a refrigerator compartment, a freezer compartment, a variable temperature compartment, etc. The refrigeration compartment 60 described below uses a refrigerator compartment as an example. A portion of the refrigeration system is installed within the cooling air supply circuit, which includes, for example, air ducts and the evaporator chamber.

[0045] As described in the background section, the fresh food storage compartment 10 is a compartment specifically designed for preserving fresh ingredients. Its internal humidity is adjustable, and a moisture-permeable module 40 is used to regulate the humidity of the fresh food storage compartment 10. Based on the characteristics of the stored ingredients, the humidity is adjusted to ensure the ingredients are in optimal storage condition. A first, closable damper is provided between the outside of the fresh food storage compartment 10 and the cooling air supply path. When the first damper is open and the first fan is running, it blows the cooling energy from the cooling air supply path, especially the cooling energy from the evaporator, towards the outside of the fresh food storage compartment 10. The first damper can be connected to a motor; the motor rotates the first damper to open and close it. When the first damper is open, the cooling air supply path is connected to the fresh food storage compartment 10; when it is closed, the cooling air supply path is isolated from the fresh food storage compartment 10. A second damper also adopts the same structure as the first damper.

[0046] The humidity and / or oxygen concentration in the fresh food compartment 10 are adjustable. The fresh food compartment 10 includes a cavity with an opening. A drawer 20 is housed in the cavity through the opening. The drawer 20 includes an open opening. Users can pull out the drawer 20 through the opening and take food into the drawer 20 by opening it.

[0047] 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 defined as 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 fresh food compartment 10, and the open end is located above the drawer 20. The drawer 20 can be pushed and pulled in the front-back direction.

[0048] In addition, the refrigerator may also include a humidity sensor and an oxygen control module. The humidity sensor is used to continuously monitor the humidity of the fresh food compartment 10, and the oxygen control module can supply gas to the fresh food compartment 10 from below to adjust the oxygen concentration inside the fresh food compartment 10. A moisture permeation module 40 is provided above the opening of the drawer 20 to adjust the humidity difference between the fresh food compartment 10 and the cooling compartment 60.

[0049] The following is combined with Figures 1-2 This invention describes a humidity control method for a refrigeration device 100 provided in an embodiment of the present invention. Although the present application provides method operation steps as shown in the following embodiments or flowcharts, the execution order of these steps is not limited to the execution order provided in the embodiments of the present application, based on conventional or non-creative labor, where there is no necessary causal relationship in the logically consistent steps of the method.

[0050] Specifically, such as Figure 1 As shown, the humidity adjustment method of the refrigeration equipment 100 includes the following steps:

[0051] Step S10: Continuously monitor the humidity of the preservation room 10.

[0052] Step S20: Determine whether the humidity of the preservation room 10 is greater than the first humidity threshold.

[0053] Step S30: If yes, determine whether the temperature of the preservation chamber 10 is lower than the preservation temperature threshold.

[0054] Step S40: If the temperature of the fresh-keeping chamber 10 is lower than the fresh-keeping temperature threshold, after the refrigeration system is shut down and a preset time has elapsed, the cooling component switches to the first operating state.

[0055] The moisture-permeable module 40 has the following characteristics: when the humidity inside drawer 20 is significantly higher than the humidity outside drawer 20, the passive moisture-permeable capacity of the moisture-permeable module 40 carries water vapor from the fresh-keeping compartment 10 to the outside. Especially when the airflow speed outside the fresh-keeping compartment 10 is faster and the external air pressure is lower, the passive dehumidification capacity of the moisture-permeable module 40 is stronger. Conversely, if the airflow speed outside the fresh-keeping compartment 10 is slow, the moisture-permeable capacity of the moisture-permeable module 40 is weaker, allowing the fresh-keeping compartment 10 to maintain a higher humidity. In other words, the higher the wind speed outside the fresh-keeping compartment 10, the lower the humidity inside the fresh-keeping compartment 10; and the lower the wind speed outside the fresh-keeping compartment 10, the higher the humidity inside the fresh-keeping compartment 10.

[0056] A humidity sensor can be installed inside the fresh-keeping compartment 10 to monitor the humidity inside drawer 20 in real time. The fan speed can be adjusted based on the humidity readings to ensure the humidity inside drawer 20 remains within the optimal range. When humidity is high and needs to be reduced, the fan speed can be increased; conversely, when humidity is relatively low, the fan speed can be decreased to slow down the evaporation of moisture from the moisture-permeable module 40. The fan speed can be adjusted by controlling different duty cycles of the primary fan, for example, within the range of 30% to 70%, matching different humidity levels with different duty cycles. This design effectively prevents excessively low humidity from causing a dry environment or excessively high humidity from causing a dry environment, thereby improving the overall fresh-keeping effect.

[0057] Specifically, in the above method, the first humidity threshold can be a preset critical value, which is a relatively high humidity value. When the humidity in the fresh-keeping room 10 is greater than the first humidity threshold, it means that the humidity is too high and dehumidification is required. The fresh-keeping temperature threshold is also a preset critical value, which is a relatively low temperature value. When the temperature in the fresh-keeping room 10 is lower than the fresh-keeping temperature threshold, it means that the temperature is too low and it is not advisable to continue to lower the temperature.

[0058] Step S20 is used to determine whether dehumidification is needed, and step S30 is used to determine whether cooling can continue. According to the above description, when it is determined that dehumidification is needed based on step S20, the method is to increase the air speed so that more airflow blows over the surface of the moisture permeable module 40. However, more airflow means that the temperature of the fresh food compartment 10 will be further reduced. When the judgment results of steps S20 and S30 are both yes, a contradiction will occur. Therefore, when it is determined that the temperature cannot be further reduced based on step S30, step S40 is executed. When the temperature in the fresh food compartment 10 is lower than the preset fresh food temperature threshold, the refrigeration system will stop running. After a preset time, the cooling component will switch to the first operating state to solve the problem of excessively low temperature during the humidity adjustment process of the fresh food compartment 10.

[0059] More specifically, in humidity control, without proper temperature monitoring, the temperature of the fresh food compartment 10 may drop too quickly, causing food to freeze or overcool, thus affecting its freshness. By introducing a freshness temperature threshold, the humidity control operation is delayed when the temperature is too low, ensuring that the temperature inside the fresh food compartment 10 does not continue to drop during humidity adjustment. After a preset time, the airflow from the first fan passes through the moisture permeation module 40, effectively reducing the humidity inside the fresh food compartment 10, thereby preventing condensation caused by excessive humidity. This process ensures the effectiveness of humidity control while avoiding food damage due to excessively low temperatures, achieving dual control of humidity and temperature, and effectively extending the food's shelf life.

[0060] Furthermore, such as Figure 2 As shown, if step S30 determines no, that is, the temperature of the preservation chamber 10 is not lower than the preservation temperature threshold, then the following steps are executed:

[0061] Step S50: Determine whether the temperature of the refrigeration chamber 60 is higher than the high temperature threshold for refrigeration;

[0062] Step S61: If the temperature of the refrigeration chamber 60 is higher than the high temperature threshold for refrigeration, the refrigeration system is started and the cooling component is switched to the first operating state;

[0063] Step S62: If the temperature of the refrigeration chamber 60 is not higher than the high temperature threshold for refrigeration, the refrigeration system maintains its current state, and the cooling component switches to the first operating state. The maintained current state means that if the current state is the operating state, the refrigeration system continues to operate; if the refrigeration system has been shut down, it continues to be shut down.

[0064] These steps further optimize and clarify the humidity and temperature regulation mechanism of the entire system. When the temperature of the fresh food compartment 10 in step S30 is determined to be higher than the fresh food temperature threshold, that is, when the temperature is not too low, it can be directly dehumidified. During the direct dehumidification process, the temperature of the fresh food compartment 10 can be lowered at the same time due to the flow of cold air.

[0065] Specifically, step S50 is used to determine the temperature of the refrigeration compartment 60. If the temperature of the refrigeration compartment 60 is higher than the high temperature threshold for refrigeration, it indicates that the temperature of the refrigeration compartment 60 is too high, and it also indicates that the temperature of the evaporator is too high. Therefore, the refrigeration compartment 60 needs to be refrigerated. At this time, step S61 is executed to start the refrigeration system, that is, to lower the temperature of the evaporator to ensure that the refrigeration compartment is maintained within a suitable temperature range. At the same time, the temperature of the evaporator begins to drop, and the refrigeration compartment 60 and the fresh food compartment 10 are refrigerated simultaneously.

[0066] If the temperature of the refrigeration chamber 60 is not higher than the high-temperature threshold for refrigeration, it indicates that the temperature of the refrigeration chamber 60 is suitable, and the temperature of the evaporator is suitable and does not need to be lowered. Therefore, there is no need to refrigerate the refrigeration chamber 60. In this case, step S62 is executed, and only the fresh-keeping chamber 10 is refrigerated, while the refrigeration chamber 60 is not refrigerated. Alternatively, the refrigeration chamber 60 can be a refrigerator compartment, and the fresh-keeping chamber 10 contains drawers 20. That is, the volume of the refrigeration chamber 60 is much larger than the volume of the fresh-keeping chamber 10. Therefore, when the refrigeration system is shut down, the existing cooling capacity of the evaporator for cooling the refrigerator compartment and the natural temperature rise of the refrigerator compartment itself can be in a dynamic balance for a certain period of time. When the refrigeration system is shut down, the temperature of the refrigeration chamber 60 will not drop excessively, and the remaining cooling capacity of the refrigeration system is sufficient to lower the temperature of the fresh-keeping chamber 10. This design not only ensures smooth humidity regulation but also considers various situations, avoiding the problem of excessive or insufficient temperature reduction in some compartments, thus improving the efficiency of the entire refrigeration system.

[0067] Furthermore, the humidity control method for refrigeration equipment also includes the following steps:

[0068] When the humidity of the preservation chamber 10 is less than the second humidity threshold, the first damper is closed to avoid excessive dehumidification, wherein the second humidity threshold is less than the first humidity threshold.

[0069] The second humidity threshold is lower than the first humidity threshold. This means that after the first damper opens and the first fan starts operating, the humidity in the preservation compartment 10 is reduced to a sufficiently low value, and then the reduction stops. By setting the humidity threshold, the operation of the first fan is flexibly controlled, thereby precisely adjusting the humidity in the preservation compartment 10 to ensure that the humidity within the compartment remains within a suitable range, effectively preventing the problem of excessively low humidity leading to a dry environment. In this way, the system can flexibly control the opening and closing of the first fan and the first damper based on real-time humidity changes, ensuring that the humidity in the preservation compartment 10 is always maintained at a suitable level. This dynamic humidity control method not only improves the preservation effect but also reduces unnecessary energy consumption and improves the overall efficiency of the system.

[0070] Step S40 further includes:

[0071] Step S41: If the refrigeration system is currently in operation, the first damper is closed. After the refrigeration system stops and a first preset time has elapsed, the first damper is opened and the first fan starts running.

[0072] Step S41 refines the temperature control logic during humidity adjustment. When the temperature is low and the refrigeration system is running, the first fan will only be activated after the refrigeration system has completely stopped and a certain time interval has elapsed, at which point the evaporator temperature can be set to prevent it from dropping too low. This design ensures that the temperature in the fresh food compartment 10 will not drop further due to airflow during humidity adjustment, achieving precise humidity control in the fresh food compartment 10 at low temperatures. This effectively avoids the negative impact of overcooling on food, better protects the quality of the food, and further enhances the system's preservation performance.

[0073] Furthermore, step S40 also includes:

[0074] Step S42: If the refrigeration system is currently in a shutdown state, the first damper is closed. After the refrigeration system has stopped and a second preset time has elapsed, the first damper is opened and the first fan starts running.

[0075] Steps S41 and S42 describe two scenarios for subsequent judgment when the temperature of the preservation chamber 10 is lower than the preservation temperature threshold, namely, how to proceed with subsequent steps when the refrigeration system is not stopped and when it has stopped. Since the refrigeration system has been stopped for a period of time in step S42, the temperature of the evaporator in step S42 is generally higher than the temperature of the evaporator in step S41. Therefore, the duration of the second preset time can be shorter than the duration of the first preset time.

[0076] Step S42 clarifies how to determine the start-up timing to precisely control humidity and temperature when the temperature in the fresh food compartment 10 is low and the refrigeration system is off, ensuring that the airflow does not operate at excessively low temperatures. This solution effectively improves the accuracy of temperature control and further optimizes the humidity and temperature management of the fresh food compartment 10.

[0077] Furthermore, the second preset time can be the difference between the shutdown cycle time and the shutdown time. The shutdown cycle time can be a preset duration, such as the shutdown cycle time being the first preset time. The shutdown time is the duration from the start of the refrigeration system shutdown to the determination that the temperature of the fresh-keeping compartment 10 is lower than the fresh-keeping temperature threshold.

[0078] Furthermore, when the first fan in this embodiment is running, the cold air blown by the cold air supply path to the fresh-keeping compartment 10 only flows outside the fresh-keeping compartment 10. The cold energy is indirectly transferred to the inside of the fresh-keeping compartment 10 through the outer wall of the fresh-keeping compartment 10, which avoids the cold air blowing directly onto the food in the drawer 20 and also avoids the internal moisture being directly carried away and lost by the airflow. This can prevent the humidity inside the drawer 20 from becoming too low, resulting in a better preservation effect.

[0079] Furthermore, the refrigerator may also include an oxygen regulation module, which can supply an oxygen regulation flow to the inside of the fresh food compartment 10, such that the oxygen concentration inside the fresh food compartment 10 is different from the oxygen concentration outside.

[0080] The oxygen regulation module is used to adjust the oxygen concentration in the preservation compartment 10, ensuring that the oxygen concentration in the compartment is lower than the ambient oxygen concentration. This provides a stable low-oxygen environment for the food, inhibiting its respiration and extending its shelf life. The benefits of a low-oxygen environment include a significant reduction in the oxidation rate of food and a decrease in microbial growth. This is particularly effective for perishable fruits and vegetables. 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.

[0081] The oxygen concentration in the outside atmosphere is generally around 21%, while the oxygen concentration in the fresh food storage room 10 can be reduced to the range of 17% to 20%.

[0082] In addition, if some ingredients require a high-oxygen environment, the oxygen adjustment module can also be used to adjust the oxygen concentration in the fresh food storage compartment 10 so that the oxygen concentration in the fresh food storage compartment 10 is higher than the oxygen concentration in the outside, for example, so that the oxygen concentration in the fresh food storage compartment 10 reaches the range of 22% to 25%.

[0083] like Figures 3-7 As shown, the fresh-keeping compartment 10 includes a first air inlet and a first air return outlet, the drawer 20 includes a second air inlet 21 and a second air return outlet 22, and the oxygen regulation module includes an air outlet 31 and a third air return outlet 32. The air outlet 31 supplies air to the first air inlet, and the air returns to the third air return outlet 32 ​​after passing through the second air inlet 21, the second air return outlet 22, and the first air return outlet in sequence. Figure 6 In this design, both the air outlet 31 and the third air return outlet 32 ​​face the bottom wall of the fresh-keeping compartment 10. The closed-loop circulation of the second air inlet 21 and the air return outlet within the drawer 20 ensures that oxygen is evenly distributed within the fresh-keeping compartment 10. This multi-stage airflow circulation design avoids uneven oxygen concentration in localized areas, especially when storing large or complex-shaped food items, ensuring consistent oxygen concentration throughout the drawer 20 and extending the freshness of the food. The entire airflow circulation path design not only ensures continuous oxygen regulation but also improves the energy efficiency of the equipment and reduces energy waste through a reasonable airflow layout.

[0084] Specifically, during the operation of the oxygen regulation module, the temperature of the fresh food compartment 10 and the temperature of the refrigeration compartment 60 can be continuously monitored. When the temperature of the refrigeration compartment 60 is lower than the high temperature threshold for refrigeration and the temperature of the oxygen regulation compartment 10 is higher than the oxygen regulation temperature threshold, the refrigeration system stops, the first fan runs, and the damper opens.

[0085] Here, if the overall effects of oxygen regulation and refrigeration are not considered, and the refrigeration system is used only to refrigerate the entire refrigeration chamber 60 and the fresh-keeping chamber 10, further refrigerating the refrigeration chamber 60 to cool the fresh-keeping chamber 10 when the temperature of the refrigeration chamber 60 is already below the set value would result in an excessively low storage environment temperature, affecting the preservation effect. However, this embodiment, through the coordinated operation of the refrigeration system, the first fan, and the opening and closing of the first damper, allows the fresh-keeping chamber 10 to utilize the existing cooling capacity of the evaporator for refrigeration when the refrigeration chamber 60 does not require refrigeration, thus preventing the refrigeration chamber 60 from being over-cooled. Specifically, assuming the high-temperature threshold for refrigeration is 4℃ and the oxygen-regulating temperature threshold is 1℃, when the temperature of the refrigeration chamber 60 is lower than the high-temperature threshold for refrigeration, for example, when the temperature of the refrigeration chamber 60 is 3℃, the refrigeration system stops, and the temperature of the refrigeration evaporator may be -20℃ to -30℃. At this time, the temperature of the fresh food compartment 10 is also 3℃. Through the above steps, without running the refrigeration system, that is, without the compressor working, the existing cooling capacity of the evaporator is used to cool the fresh food compartment 10. This can both prevent the temperature of the refrigeration chamber 60 from being too low and allow the fresh food compartment 10 to be lowered to a suitable temperature. This avoids the decrease in the preservation effect caused by the temperature of the fresh food compartment 10 being too high, and avoids the food from freezing due to the temperature of the refrigeration chamber 60 being too low.

[0086] When temperature, oxygen, and humidity are controlled simultaneously, the following steps can be performed:

[0087] Step S70: While monitoring whether the humidity of the fresh food storage room 10 is greater than the first humidity threshold and during the operation of the oxygen regulation module, continuously monitor the temperature and humidity of the fresh food storage room 10 and the temperature of the refrigeration room 60, and record the working time of the oxygen regulation module.

[0088] Step S80: Determine whether the temperature of the preservation chamber 10 is lower than the preservation temperature threshold.

[0089] Step S81: If so, after the refrigeration system is shut down and a preset time has elapsed, the first damper opens and the first fan starts running.

[0090] Step S82: If not, determine whether the temperature of the refrigeration chamber 60 is lower than the high temperature threshold for refrigeration.

[0091] Step S821: If yes, the refrigeration system stops, the first fan runs, and the first damper opens.

[0092] Step S822: If not, the refrigeration system operates, the first fan operates, and the first damper opens.

[0093] Step S90: When the working time of the oxygen adjustment module is greater than the working cycle time, the oxygen adjustment module is switched to the shutdown state; when the humidity of the fresh food storage room (10) is less than the second humidity threshold, the first air damper is closed, wherein the second humidity threshold is less than the first humidity threshold.

[0094] Through the above steps, it is possible to achieve simultaneous operation of temperature regulation, oxygen regulation, and humidity regulation. This not only effectively utilizes the residual cooling of the evaporator when the refrigeration system is shut down, but also avoids the food from freezing due to excessively low temperatures caused by the residual cooling of the evaporator. It also avoids over-cooling of the refrigeration room 60 and other situations, and stops oxygen regulation or dehumidification at appropriate times, thus achieving better technical effects in regulating temperature, oxygen, and humidity.

[0095] In addition, the oxygen control module 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.

[0096] Thus, when the controller controls the oxygen regulating module 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; and when the controller controls the oxygen regulating module 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.

[0097] The oxygen control module also includes an inner cavity that can at least contain the 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.

[0098] When the oxygen regulating module is running, i.e., when it is energized, the cathode is used to consume oxygen from the outside 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.

[0099] 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.

[0100] This allows you to adjust the oxygen concentration as needed and choose a suitable oxygen-deficient or oxygen-enriched preservation atmosphere.

[0101] Compared with the prior art, this embodiment has the following beneficial effects:

[0102] The humidity control method of this refrigeration equipment 100, when adjusting humidity, if the temperature of the fresh food compartment 10 is detected to be lower than the preset temperature threshold, delays the start time of humidity adjustment in the fresh food compartment. After the refrigeration system stops and the preset time has elapsed, the fan is turned on to adjust the humidity. In this way, the temperature inside the fresh food compartment 10 will not drop excessively while adjusting the humidity, which can effectively avoid the food from freezing due to excessively low temperature, avoid the negative impact of excessively low temperature on the food, maintain a suitable humidity environment inside the fresh food compartment 10, and improve the storage quality and preservation period of the food.

[0103] The refrigeration equipment may also include, but is not limited to, a processing module, a storage module, and a computer program stored in the storage module and executable on the processing module, such as the humidity control method program for the refrigeration equipment described above. When the processing module executes the computer program, it implements the steps in the humidity control method embodiments of the various refrigeration equipment described above, for example... Figure 1 and 2 The steps are shown.

[0104] The humidity sensor of the refrigeration equipment is used to continuously monitor the humidity of the fresh food compartment 10. The humidity difference between the fresh food compartment 10 and the refrigeration compartment 60 is adjusted by the moisture permeation module 40. When the cooling component is in the first operating state, the cold air passing through the refrigeration system is blown through the moisture permeation module 40.

[0105] The processing module is used to determine whether the temperature of the fresh food storage room 10 is lower than the fresh food storage temperature threshold when the humidity of the fresh food storage room 10 is greater than the first humidity threshold; if the temperature of the fresh food storage room 10 is lower than the fresh food storage temperature threshold, the cooling component switches to the first operating state after the refrigeration system is shut down and a preset time has elapsed.

[0106] The processing module can be a Central Processing Unit (CPU), or other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate Arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. General-purpose processors can be microprocessors or any conventional processor. The processing module is the control center of the refrigeration equipment, connecting all parts of the equipment via various interfaces and lines.

[0107] The storage module can be used to store the computer programs and / or modules. The processing module implements various functions of the refrigeration equipment by running or executing the computer programs and / or modules stored in the storage module and by calling the data stored in the storage module. The storage module may mainly include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function, etc. In addition, the storage module may include high-speed random access memory, and may also include non-volatile memory, such as hard disk, RAM, plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0108] For example, the computer program can be divided into one or more modules / units, which are stored in a storage module and executed by a processing module to complete the present invention. The one or more modules / units can be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of the computer program in a refrigeration device.

[0109] Furthermore, one embodiment of the present invention provides a readable storage medium storing a computer program, which, when executed by a processing module, can implement the steps in the humidity adjustment method of the above-described refrigeration equipment, that is, implement the steps in any of the technical solutions of the humidity adjustment method of the above-described refrigeration equipment.

[0110] If the humidity regulation method module of the refrigeration equipment is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the above embodiments of the present invention can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by the processing module, it can implement the steps of the above-described method embodiments.

[0111] The computer program includes computer program code, which can be in the form of source code, object code, executable file, or some intermediate form. The computer-readable medium can include any entity or device capable of carrying the computer program code, recording media, U disks, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added to or subtracted according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.

[0112] 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.

[0113] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A refrigeration device, characterized in that, include: A humidity sensor is used to continuously monitor the humidity of the fresh food compartment (10). The humidity difference between the fresh food compartment (10) and the refrigeration compartment (60) is adjusted by the moisture permeation module (40). When the cooling component is in the first operating state, the cold air passing through the refrigeration system is blown through the moisture permeation module (40). The processing module is used to determine whether the temperature of the fresh-keeping room (10) is lower than the fresh-keeping temperature threshold when the humidity of the fresh-keeping room (10) is greater than the first humidity threshold; if the temperature of the fresh-keeping room (10) is lower than the fresh-keeping temperature threshold, the cooling component switches to the first operating state after the refrigeration system is shut down and a preset time has elapsed.

2. A humidity control method for a refrigeration device, characterized in that, Includes the following steps: The humidity of the fresh food storage room (10) is continuously monitored. The humidity difference between the fresh food storage room (10) and the refrigeration room (60) is adjusted by the moisture permeation module (40). When the cooling component is in the first operating state, the cold air from the refrigeration system is blown through the moisture permeation module (40). When the humidity of the fresh-keeping room (10) is greater than the first humidity threshold, it is determined whether the temperature of the fresh-keeping room (10) is lower than the fresh-keeping temperature threshold. If the temperature of the preservation chamber (10) is lower than the preservation temperature threshold, the cooling component switches to the first operating state after the refrigeration system is shut down and a preset time has elapsed.

3. The humidity control method for refrigeration equipment according to claim 2, characterized in that, It also includes the following steps: If the temperature of the fresh-keeping room (10) is not lower than the fresh-keeping temperature threshold, determine whether the temperature of the refrigeration room (60) is higher than the refrigeration high-temperature threshold. If the temperature of the refrigeration chamber (60) is higher than the high temperature threshold for refrigeration, the refrigeration system will operate and the cooling component will switch to the first operating state. If the temperature of the refrigeration chamber (60) is not higher than the high temperature threshold for refrigeration, the refrigeration system maintains its current state, and the cooling component switches to the first operating state.

4. The humidity control method for a refrigeration device according to claim 2 or 3, characterized in that, The cooling assembly includes a cooling air path, a first fan, and a first damper; In the first operating state, the first fan is running, the first damper is open, and the cold air supplied by the cooling air path blows through the moisture permeation module (40) only flows outside the fresh-keeping chamber (10).

5. The humidity control method for a refrigeration device according to claim 4, characterized in that, It also includes the following steps: When the humidity of the preservation room (10) is less than the second humidity threshold, the first damper is closed, wherein the second humidity threshold is less than the first humidity threshold.

6. The humidity control method for a refrigeration device according to claim 4, characterized in that, The step of switching the cooling component to the first operating state after the refrigeration system has stopped and a preset time has elapsed includes: If the refrigeration system is currently in operation, the first damper is closed. After the refrigeration system stops and a first preset time has elapsed, the first damper opens and the first fan starts running.

7. The humidity control method for a refrigeration device according to claim 4, characterized in that, The step of switching the cooling component to the first operating state after the refrigeration system has stopped and a preset time has elapsed includes: If the refrigeration system is currently in a shutdown state, the first damper is closed. After the refrigeration system has been shut down for a second preset time, the first damper is opened and the first fan starts running.

8. The humidity control method for a refrigeration device according to claim 7, characterized in that, The second preset time is the difference between the downtime cycle time and the downtime.

9. The humidity control method for a refrigeration device according to claim 4, characterized in that, The fresh-keeping compartment (10) contains a drawer (20), and a moisture-permeable module (40) is provided above the opening of the drawer (20). When the first air door is opened and the first fan is running, cold air blows across the surface of the moisture-permeable module (40).

10. The humidity control method for a refrigeration device according to claim 1, characterized in that, The fresh-keeping room (10) is supplied with a controlled oxygen flow, which makes the oxygen concentration inside the fresh-keeping room (10) different from the oxygen concentration outside.

11. A readable storage medium storing a computer program, characterized in that, When executed by the processing module, the computer program can implement the steps in the humidity adjustment method of the refrigeration equipment according to any one of claims 2 to 10.

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