Refrigeration equipment and control method thereof

Abstract

The invention discloses refrigeration equipment and a control method thereof. The control method comprises the steps that a refrigeration air supply system is controlled to be started to supply air into a chamber; an oxygen adjusting module is controlled to be started so as to convey oxygen adjusting gas flow into the chamber; and the air supply amount of the oxygen adjusting module and the air supply amount of the refrigeration air supply system are controlled to be gradually reduced in a stepped mode. According to the refrigerator, the oxygen adjusting module is controlled to supply the oxygen adjusting air flow to the interior of the compartment, the oxygen concentration in the compartment can be adjusted, so that the fresh-keeping effect in the compartment is improved, further, the air supply amount of the oxygen adjusting module and the air supply amount of the refrigeration air supply system are controlled to be gradually reduced in a stepped mode, and the fresh-keeping effect in the compartment is improved. The influence of air supply of the refrigeration air supply system on the oxygen adjusting air flow conveyed by the oxygen adjusting module can be reduced, so that the oxygen concentration in the chamber is prevented from deviating from the preset oxygen-rich environment or the preset oxygen-poor environment, and the fresh-keeping effect of the chamber is further improved.

Description

Technical Field

[0001] This application relates to the field of refrigeration technology, and in particular to a refrigeration device and a control method for the refrigeration device. Background Technology

[0002] Refrigeration equipment is used for the storage and preservation of meat, vegetables, food, beverages and other items due to its refrigeration function, and is widely used in stores, supermarkets and homes.

[0003] However, with the widespread use of refrigeration equipment, the preservation effect of existing refrigeration equipment can no longer meet the ever-increasing demand for preservation. How to make refrigeration equipment have a better preservation effect is a problem that the refrigeration equipment field has been working tirelessly to solve. Summary of the Invention

[0004] The purpose of this application is to provide a refrigeration device and its control method to solve the problem of how to improve the preservation effect of existing refrigeration devices.

[0005] To achieve one of the above-mentioned objectives, one embodiment of this application provides a control method for a refrigeration device, comprising:

[0006] Control the start of the cooling and air supply system to supply air to the room;

[0007] The oxygen conditioning module is activated to deliver a conditioned oxygen flow into the chamber.

[0008] The air supply of the oxygen regulating module and the air supply of the cooling air supply system are controlled to decrease gradually in a stepwise manner.

[0009] As a further improvement to one embodiment of this application, the control method of the refrigeration equipment includes:

[0010] Based on the running time, the air supply of the oxygen regulating module and the air supply of the cooling air supply system are gradually reduced in a stepwise manner.

[0011] As a further improvement to one embodiment of this application, the control method of the refrigeration equipment includes:

[0012] The oxygen regulation module and the cooling air supply system are started and run simultaneously.

[0013] As a further improvement to one embodiment of this application, the control method of the refrigeration equipment includes:

[0014] Start timing upon startup, and control the air supply of the oxygen regulation module to Vq1, and control the air supply of the cooling air supply system to Vf1;

[0015] After time t1, the air supply of the oxygen regulating module is controlled to be Vq2;

[0016] After time t2, the air supply volume of the cooling air supply system is controlled to be Vf2;

[0017] After time t3, the air supply of the oxygen regulating module is controlled to Vq3, and the air supply of the cooling air supply system is controlled to Vf3.

[0018] Among them, Vq1>Vq2>Vq3, Vf1>Vf2>Vf3.

[0019] As a further improvement to one embodiment of this application, the control method of the refrigeration equipment includes:

[0020] After the oxygen regulating module (2) is started and runs for a preset time, the cooling air supply system is started and run.

[0021] As a further improvement to one embodiment of this application, the control method of the refrigeration equipment includes:

[0022] The oxygen regulation module (2) is started and operates with an air supply of Vq1;

[0023] After time t1, the cooling and air supply system is started and runs with an air supply volume of Vf1, and the air supply volume of the oxygen regulation module (2) is controlled to be Vq2.

[0024] After time t2, the air supply volume of the cooling air supply system is controlled to be Vf2;

[0025] After time t3, the gas supply of the oxygen regulating module (2) is controlled to be Vq3, and the air supply of the cooling air supply system is controlled to be Vf3.

[0026] Among them, Vq1>Vq2>Vq3, Vf1>Vf2>Vf3.

[0027] As a further improvement of one embodiment of this application, Vf1 satisfies the following condition: the temperature inside the room reaches a first preset temperature T1;

[0028] Vf2 satisfies the following condition: the temperature inside the room reaches the second preset temperature T2;

[0029] Vf3 satisfies the following condition: maintaining the temperature inside the chamber at T2;

[0030] Where T1 > T2.

[0031] As a further improvement of one embodiment of this application, the preset concentration of oxygen in the room is greater than the oxygen concentration in the air.

[0032] Wherein, Vq1, Vq2, and Vq3 respectively satisfy the following conditions: the oxygen concentration in the room reaches c1, c2, and c3 respectively; c1>c2>c3.

[0033] As a further improvement of one embodiment of this application, the preset concentration of oxygen in the room is lower than the oxygen concentration in the air;

[0034] Wherein, Vq1, Vq2, and Vq3 respectively satisfy: making the oxygen concentration in the chamber reach c1, c2, and c3; c1 <c2<c3。

[0035] As a further improvement of one embodiment of this application, the gas supply of the oxygen regulating module is adjusted by controlling the operating power, operating current or opening angle of the gas path valve of the oxygen regulating module, and the gas supply of the oxygen regulating module is positively correlated with its operating power, operating current and opening angle of the gas path valve.

[0036] As a further improvement of one embodiment of this application, the air volume of the refrigeration air supply system is adjusted by controlling the speed of the compressor or the opening angle of the damper, and the air volume of the refrigeration air supply system is positively correlated with the speed of the compressor and the opening angle of the damper, respectively.

[0037] To achieve one of the above-mentioned objectives, one embodiment of this application provides a refrigeration device, comprising:

[0038] Room;

[0039] A cooling and ventilation system supplies cold air to the room;

[0040] An oxygen regulation module delivers an oxygen regulation flow into the chamber;

[0041] The control system is connected to the cooling air supply system and the oxygen regulation module respectively, and is used for:

[0042] Control the start of the cooling and air supply system to supply air to the room;

[0043] The oxygen regulation module is activated to deliver an oxygen flow into the compartment.

[0044] The air supply of the oxygen regulating module and the air supply of the cooling air supply system are controlled to decrease gradually in a stepwise manner.

[0045] Compared with the prior art, the refrigeration equipment and control method of this application can regulate the oxygen concentration inside the compartment by controlling the oxygen regulating module to supply oxygen regulating flow to the compartment, thereby improving the preservation effect inside the compartment. Furthermore, by controlling the air supply of the oxygen regulating module and the air supply of the refrigeration air supply system to gradually decrease in a stepwise manner, the influence of the air supply of the refrigeration air supply system on the oxygen regulating flow delivered by the oxygen regulating module can be reduced, thereby preventing the oxygen concentration in the compartment from deviating from its preset oxygen-rich environment or its preset oxygen-deficient environment, and further improving the preservation effect of the compartment. Attached Figure Description

[0046] Figure 1 This is a three-dimensional structural schematic diagram of a refrigeration device according to an embodiment of this application;

[0047] Figure 2 This is a three-dimensional structural diagram of the cylinder and oxygen-regulating module according to an embodiment of this application;

[0048] Figure 3 This is a three-dimensional structural diagram of the cylinder according to an embodiment of this application;

[0049] Figure 4 yes Figure 3 An explosion diagram;

[0050] Figure 5 yes Figure 2 A structural schematic diagram of the middle cylinder and oxygen control module from another angle;

[0051] Figure 6 yes Figure 5 Sectional view along line AA;

[0052] Figure 7 yes Figure 6 Enlarged diagram of section B;

[0053] Figure 8 yes Figure 6 Enlarged diagram of section C;

[0054] Figure 9 This is a schematic diagram of the structure of a modified atmosphere container according to an embodiment of this application, wherein the arrows indicate the flow direction of the cooling airflow;

[0055] Figure 10 This is a schematic diagram of the structure of a modified atmosphere container according to another embodiment of this application, wherein the arrows indicate the flow direction of the cooling airflow;

[0056] Figure 11 This is a schematic diagram of the structure of a modified atmosphere container according to another embodiment of this application, wherein the arrows indicate the flow direction of the cooling airflow.

[0057] Explanation of reference numerals in the attached figures:

[0058] 100. Refrigeration equipment; 1. Cabinet; 11. Inner liner; 111. Compartment; 12. Outer shell; 2. Oxygen control module; 3. Cylinder; 31. First opening; 4. Drawer; 41. Second opening; 42. First door; 5. Controlled atmosphere container; 51. Box; 511. Third opening; 52. Cover; 53. Second door; 54. Connecting part; 541. Ventilation opening; 61. Hole; 62. Slot. Detailed Implementation

[0059] The present application will be described in detail below with reference to specific embodiments shown in the accompanying drawings.

[0060] In the various drawings of the present application, for the convenience of illustration, certain dimensions of structures or parts are enlarged relative to other structures or parts. Therefore, it is only used to illustrate the basic structure of the subject matter of the present application.

[0061] It should be understood that although terms such as "first", "second", "third", etc. may be used herein to describe various elements, structures or parameters, the described objects should not be limited by these terms. These terms are only used to distinguish these described objects from each other.

[0062] Refer Figures 1 to 6 As shown, an embodiment of the present application provides a refrigeration device 100, which includes a box body 1. The box body 1 includes an inner container 11 and an outer shell 12 provided outside the inner container 11. A compartment 111 is defined in the inner container 11.

[0063] The refrigeration device 100 further includes a refrigeration and air supply system, which supplies a refrigerated air flow, that is, cold air, into the compartment 111.

[0064] Among them, the refrigeration and air supply system includes a refrigeration unit and a cold air supply path. The cold air supply path connects the refrigeration unit and the compartment 111 and supplies cold air into the compartment 111.

[0065] Among them, the refrigeration unit includes a compressor, a condenser, a throttling device and an evaporator connected in sequence.

[0066] Refer Figure 2 And Figure 5 As shown, the refrigeration device 100 further includes an oxygen adjustment module 2, which is used to prepare an oxygen-adjusted air flow and supply the oxygen-adjusted air flow into the compartment 111. The so-called oxygen-adjusted air flow means that it can be used to adjust the oxygen concentration. Specifically, the oxygen concentration in the oxygen-adjusted air flow is greater than the oxygen concentration in the air, that is, an oxygen-rich air flow, or the oxygen concentration in the oxygen-adjusted air flow is less than the oxygen concentration in the air, that is, a nitrogen-rich air flow, so as to adjust the oxygen concentration in the compartment 111.

[0067] Thus, by supplying oxygen to the interior of the compartment 111 through the oxygen-regulating module 2, the oxygen concentration inside the compartment 111 can be adjusted. Specifically, by increasing the oxygen concentration in the compartment 111, i.e., creating an oxygen-rich environment, the higher oxygen concentration inhibits the growth and reproduction of anaerobic bacteria. Furthermore, the higher oxygen concentration allows it to combine with deoxymyoglobin on the muscle surface to form a thicker layer of oxymyoglobin, thereby maintaining the bright red color of the meat and improving its color stability, thus enhancing its preservation effect. Conversely, by decreasing the oxygen concentration in the compartment 111, i.e., creating an oxygen-deficient environment, the lower oxygen concentration not only inhibits the aerobic respiration of fruits and vegetables, reducing the consumption of sugars and other organic matter, but also minimizes their anaerobic respiration, preventing the production of substances like alcohol that could affect the quality of fruits and vegetables. This further improves the preservation effect of the refrigeration equipment 100.

[0068] The refrigeration equipment 100 also includes a control system, which is connected to the refrigeration air supply system and the oxygen regulation module 2 respectively, and is used for:

[0069] Control the start of the cooling and air supply system to supply air into the room 111;

[0070] The oxygen conditioning module 2 is activated to deliver a conditioned oxygen flow into the compartment 111;

[0071] The air supply of the oxygen regulating module 2 and the air supply of the cooling air supply system are controlled to gradually decrease in a stepwise manner.

[0072] In this way, by controlling the air supply of the oxygen-regulating module 2 and the air supply of the refrigeration air supply system to gradually decrease in a stepwise manner, the influence of the air supply of the refrigeration air supply system on the oxygen-regulating flow delivered by the oxygen-regulating module 2 can be reduced, thereby preventing the oxygen concentration in the compartment 111 from deviating from its preset oxygen-rich environment or its preset oxygen-deficient environment, and further improving the preservation effect of the compartment 111.

[0073] This application also provides a control method for a refrigeration device 100, which includes:

[0074] Control the start of the cooling and air supply system to supply air into the room 111;

[0075] The oxygen conditioning module 2 is activated to deliver a conditioned oxygen flow into the compartment 111;

[0076] The air supply of the oxygen regulating module 2 and the air supply of the cooling air supply system are controlled to gradually decrease in a stepwise manner.

[0077] This control method regulates the oxygen concentration inside the compartment 111 by controlling the oxygen regulating module 2 to supply oxygen to the compartment 111, thereby improving the preservation effect. Furthermore, by controlling the air supply of the oxygen regulating module 2 and the air supply of the refrigeration and air supply system to gradually decrease in a stepwise manner, the influence of the air supply of the refrigeration and air supply system on the oxygen regulating flow delivered by the oxygen regulating module 2 can be reduced, thus preventing the oxygen concentration in the compartment 111 from deviating from its preset oxygen-rich environment or its preset oxygen-deficient environment, further improving the preservation effect of the compartment 111.

[0078] The refrigeration equipment 100 also includes an oxygen regulating circuit, which connects the oxygen regulating module 2 and the compartment 111 and delivers an oxygen regulating flow to the compartment 111.

[0079] The refrigeration equipment 100 also includes a power supply, and the control system is connected to the oxygen regulation module 2.

[0080] The oxygen regulation module 2 includes at least one anode and at least one cathode. The anode is controllably connected to the positive terminal of the power supply, and the cathode is controllably connected to the negative terminal of the power supply.

[0081] Thus, when the control system controls the oxygen regulating module 2 to run, under the control of the control system, 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 2; and when the control system controls the oxygen regulating module 2 to stop running, under the control of the control system, the positive terminal of the power supply is disconnected from the anode and the negative terminal of the power supply is disconnected from the cathode, that is, the power supply stops supplying power to the oxygen regulating module 2.

[0082] Furthermore, the oxygen regulation module 2 also includes an inner cavity that can at least accommodate the electrolyte.

[0083] The first side of the cathode is exposed in the inner cavity, and the second side is exposed to the external air of the oxygen regulation module 2.

[0084] When the oxygen regulating module 2 is in operation, i.e., when it is energized, the cathode is used to consume the oxygen in the external air through an electrochemical reaction. Specifically, the 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 regulation module 2, and when it is sent into the oxygen regulation circuit, an oxygen-deficient flow is formed.

[0085] 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 form an oxygen-rich preservation atmosphere, which is then sent into the oxygen conditioning circuit to form an oxygen-rich flow.

[0086] Furthermore, the control system is also used to: control the air supply of the oxygenation module 2 and the air supply of the cooling air supply system to gradually decrease in a stepwise manner according to the running time.

[0087] The control method further includes: controlling the air supply of the oxygenation module 2 and the air supply of the cooling air supply system to gradually decrease in a stepwise manner according to the running time.

[0088] In this way, rapid cooling can be achieved in the initial stage through a large air volume, while a large air supply is used to provide a large amount of oxygen-regulating flow to the chamber 111 to maintain the oxygen concentration in the chamber 111. This prevents the gas in the chamber 111 from being carried out of the chamber 111 by the cold air circulation return air, thus avoiding the oxygen concentration in the chamber 111 from deviating from its preset oxygen-rich environment or its preset oxygen-deficient environment. As time goes on, the temperature in the chamber 111 gradually decreases. By controlling the air supply volume of the cooling air supply system to decrease in a stepwise manner, energy consumption can be reduced and costs can be saved while controlling the temperature in the chamber 111 to gradually reach the preset temperature. As time goes on, the oxygen concentration in the chamber 111 gradually approaches its preset concentration. By controlling the air supply volume of the oxygen regulation module 2 to decrease in a stepwise manner, energy consumption can be reduced and costs can be saved while controlling the oxygen concentration in the chamber 111 to gradually reach its preset concentration.

[0089] In one embodiment, the control system is further configured to: control the oxygen regulation module 2 and the cooling air supply system to start and run simultaneously.

[0090] The control method further includes controlling the oxygen regulation module 2 and the cooling air supply system to start and run simultaneously.

[0091] By controlling the simultaneous start and operation of the oxygen regulation module 2 and the cooling air supply system, the temperature and oxygen concentration in the chamber 111 can be synchronously regulated to reduce the impact of the air supply of the cooling air supply system on the oxygen regulation flow delivered by the oxygen regulation module 2, thereby preventing the oxygen concentration in the chamber 111 from deviating from its preset oxygen-rich environment or its preset oxygen-deficient environment.

[0092] Furthermore, the control system is also used for:

[0093] When the oxygen regulating module 2 and the cooling air supply system are started simultaneously, the timing begins, and the air supply of the oxygen regulating module 2 is controlled to be Vq1, and the air supply of the cooling air supply system is controlled to be Vf1.

[0094] After time t1, the gas supply of the oxygen regulating module 2 is controlled to be Vq2;

[0095] After time t2, the air supply volume of the cooling air supply system is controlled to be Vf2;

[0096] After time t3, the air supply of the oxygen regulating module 2 is controlled to Vq3, and the air supply of the cooling air supply system is controlled to Vf3.

[0097] Among them, Vq1>Vq2>Vq3, Vf1>Vf2>Vf3.

[0098] In the initial stage, rapid cooling is achieved through a large air volume, while a large air supply is used to provide a large amount of oxygen-regulating flow to the chamber 111. This not only achieves rapid cooling but also prevents oxygen in the chamber 111 from being carried out of the chamber, thus avoiding deviation of the oxygen concentration from its preset oxygen-rich environment or its preset oxygen-deficient environment, thereby rapidly inhibiting microbial growth. After the oxygen regulation module 2 operates at an air supply volume Vq1 and the cooling air supply system operates at an air supply volume Vf1 for a time t1, the oxygen concentration in the chamber 111 has been adjusted to its preset oxygen-rich environment or its preset oxygen-deficient environment. At this point, controlling the air supply volume of the oxygen regulation module 2 to decrease to Vq2 can reduce the operating cost of the oxygen regulation module 2. After controlling the oxygen regulation module 2 to operate at an air supply volume Vq2 for a time t2, the... When the temperature in chamber 111 drops to a certain level, the growth of microorganisms is effectively controlled. At this point, reducing the airflow of the refrigeration and ventilation system to Vf2 reduces the cooling rate in chamber 111, preventing food from freezing and forming ice crystals, thus avoiding irreversible damage to the food's texture. It also reduces the operating cost of the refrigeration and ventilation system. After the refrigeration and ventilation system operates at an airflow of Vf2 for a time t3, the temperature in chamber 111 approaches the preset temperature, and the oxygen concentration approaches its preset concentration. At this point, reducing the air supply of the oxygen regulating module 2 to Vq3 and the airflow of the refrigeration and ventilation system to Vf3 maintains the temperature and oxygen concentration in chamber 111 at the preset temperature and concentration, further reducing operating costs and saving energy.

[0099] In another embodiment, the control system is further configured to: control the oxygen regulating module 2 to start and run for a preset time, and then control the cooling air supply system to start and run.

[0100] The control method further includes: controlling the oxygen regulating module 2 to start and run for a preset time, and then controlling the cooling air supply system to start and run.

[0101] By controlling the oxygen regulation module 2 to run for a preset time, the oxygen concentration in the chamber 111 can be regulated first, and then the cooling and ventilation system can be started and run. This avoids the air supply of the cooling and ventilation system from having a significant impact on the oxygen concentration in the chamber 111, and prevents the oxygen concentration in the chamber 111 from deviating from its preset oxygen-rich environment or its preset oxygen-deficient environment.

[0102] Furthermore, the control system is also used for:

[0103] The oxygen regulation module 2 is started and operates with an air supply of Vq1.

[0104] After time t1, the cooling and air supply system is started and runs at an air supply volume of Vf1, and the air supply volume of the oxygen regulation module 2 is controlled to be Vq2.

[0105] After time t2, the air supply volume of the cooling air supply system is controlled to be Vf2;

[0106] After time t3, the air supply of the oxygen regulating module 2 is controlled to Vq3, and the air supply of the cooling air supply system is controlled to Vf3.

[0107] Among them, Vq1>Vq2>Vq3, Vf1>Vf2>Vf3.

[0108] In the initial stage, a large air supply is used to provide a large amount of oxygen-regulating flow to the chamber 111, so that the oxygen concentration in the chamber 111 quickly approaches the target concentration, achieving the effect of rapidly inhibiting microbial growth. After the oxygen regulation module 2 operates at an air supply volume Vq1 for a time t1, the oxygen concentration in the chamber 111 has been adjusted to its preset oxygen-rich environment or its preset oxygen-deficient environment. At this time, controlling the cooling and ventilation system to start and operate at a ventilation volume Vf1 can not only quickly lower the temperature, but also avoid large fluctuations in the oxygen concentration in the chamber 111, which would cause the oxygen concentration in the chamber 111 to deviate from its preset oxygen-rich environment or its preset oxygen-deficient environment. At the same time, controlling the air supply volume of the oxygen regulation module 2 to reduce to Vq2 can reduce the operating cost of the oxygen regulation module 2. Controlling the oxygen regulation module 2 at an air supply volume of Vq2 and the cooling and ventilation system... After the system operates at an air supply volume of Vf1 for a time t2, the temperature in the chamber 111 drops to a certain level. At this point, the growth of microorganisms is effectively controlled. Reducing the air supply volume of the refrigeration and ventilation system to Vf2 at this time reduces the cooling rate in the chamber 111, preventing food from freezing and forming ice crystals, thus avoiding irreversible damage to the food's texture. It also reduces the operating cost of the refrigeration and ventilation system. After the refrigeration and ventilation system operates at an air supply volume of Vf2 for a time t3, the temperature in the chamber 111 approaches the preset temperature, and the oxygen concentration approaches its preset concentration. At this time, reducing the air supply volume of the oxygen regulating module 2 to Vq3 and the air supply volume of the refrigeration and ventilation system to Vf3 maintains the temperature and oxygen concentration in the chamber 111 at the preset temperature and concentration, further reducing operating costs and saving energy.

[0109] Specifically, Vf1 satisfies the following condition: the temperature inside the chamber 111 reaches a first preset temperature T1;

[0110] Vf2 satisfies the following condition: the temperature inside the chamber 111 reaches the second preset temperature T2;

[0111] Vf3 satisfies the following condition: the temperature inside the chamber 111 is maintained at T2;

[0112] Where T1 > T2.

[0113] Before the temperature in the chamber 111 drops to T1, rapid cooling can quickly inhibit the growth of microorganisms. When the temperature in the chamber 111 drops to T1, the growth of microorganisms has been effectively controlled. After the temperature drops below T1, the cooling rate is reduced and the temperature is slowly lowered to T2 to prevent the food from freezing and forming ice crystals, so as to avoid irreversible damage to the texture of the food.

[0114] In one embodiment, the preset concentration of oxygen in the chamber 111 is greater than the oxygen concentration in the air. That is, the environment in the chamber 111 is an oxygen-rich environment. Thus, Vq1 is satisfied to make the oxygen concentration in the chamber 111 reach c1; Vq2 is satisfied to make the oxygen concentration in the chamber 111 reach c2; Vq3 is satisfied to make the oxygen concentration in the chamber 111 reach c3; and c1 > c2 > c3. That is, by controlling the oxygen concentration in the chamber 111 to gradually decrease over time according to c1, c2, c3, it can cooperate with the air supply volume of the refrigeration and air supply system to prevent the oxygen concentration in the chamber 111 from dropping below the preset concentration and becoming an oxygen-poor environment.

[0115] In another embodiment, the preset concentration of oxygen in the chamber 111 is less than the oxygen concentration in the air. That is, the environment in the chamber 111 is an oxygen-poor environment. Thus, Vq1 is satisfied to make the oxygen concentration in the chamber 111 reach c1; Vq2 is satisfied to make the oxygen concentration in the chamber 111 reach c2; Vq3 is satisfied to make the oxygen concentration in the chamber 111 reach c3; and c1 < c2 < c3. By controlling the oxygen concentration in the chamber 111 to gradually increase over time according to c1, c2, c3, it can cooperate with the air supply volume of the refrigeration and air supply system to prevent the oxygen concentration in the chamber 111 from rising above the preset concentration and becoming an oxygen-rich environment.

[0116] A temperature sensor is provided in the chamber 111 to detect the temperature in the chamber 111 in real time.

[0117] The control system is connected to the temperature sensor and is used to: obtain the temperature in the chamber 111 detected by the temperature sensor.

[0118] An oxygen concentration sensor is provided in the chamber 111 to detect the oxygen concentration in the chamber 111 in real time.

[0119] The control system is connected to the oxygen concentration sensor and is used to: obtain the oxygen concentration in the chamber 111 detected by the oxygen concentration sensor.

[0120] In one embodiment, the air supply volume of the oxygen adjustment module 2 can be adjusted by controlling the operating power of the oxygen adjustment module 2, and the air supply volume of the oxygen adjustment module 2 is positively correlated with its operating power; in another embodiment, the air supply volume of the oxygen adjustment module 2 can also be adjusted by controlling the operating current of the oxygen adjustment module 2, and the air supply volume of the oxygen adjustment module 2 is positively correlated with its operating current; in yet another embodiment, the air supply volume of the oxygen adjustment module 2 can also be adjusted by controlling the opening angle of the gas path valve of the oxygen adjustment module 2, and the air supply volume of the oxygen adjustment module 2 is positively correlated with the opening angle of its gas path valve.

[0121] In one embodiment, the air delivery volume of the refrigeration and air supply system is adjusted by controlling the rotational speed of the compressor, and the air delivery volume of the refrigeration and air supply system is positively correlated with the rotational speed of the compressor; in another embodiment, the air delivery volume of the refrigeration and air supply system is adjusted by controlling the opening angle of the air door, and the air delivery volume of the refrigeration and air supply system is positively correlated with the opening angle of the air door.

[0122] Refer Figures 2 to 5 As shown, in one embodiment, the refrigeration device 100 includes a cylinder body 3a and a drawer 4. The cylinder body 3a has a first opening 31a, and the drawer has a second opening 41. The drawer 4 is received in the cylinder body 3a. The first opening 31a faces the inner wall of the cylinder body 3a. The drawer 4 and the cylinder body 3a together enclose the compartment 111. The drawer 4 has a first door body 42, and the first door body 42 is used to open or close the first opening 31. By pulling the first door body 42, the drawer 4 can move relative to the cylinder body 3. When the drawer 4 moves to a position where at least part of the second opening 41 is exposed to the external environment, it is convenient for the user to store and retrieve food ingredients in the drawer 4.

[0123] In this way, the temperature and oxygen concentration in the compartment 111 can be regulated simultaneously, so that the compartment 111 has a better fresh-keeping effect, and the structure of the compartment 111 is simple, which is convenient for production.

[0124] Among them, the opening directions of the first opening 31a and the second opening 41 are different from each other. Preferably, the opening directions of the first opening 31a and the second opening 41 are perpendicular to each other. In this way, it is beneficial to the processing of the cylinder body 3a and the drawer 4, improves the feasibility, and is also convenient for the first door body 42 to drive the drawer 4 to move relative to the cylinder body 3a for storing and retrieving items.

[0125] Refer Figures 2 to 8 As shown, in another embodiment, the refrigeration device 100 includes a cylinder body 3b and a controlled atmosphere container 5. The controlled atmosphere container 5 is received in the cylinder body 3b, and the controlled atmosphere container 5 encloses the compartment 111.

[0126] The controlled atmosphere container 5 has a cold air channel. The refrigeration and air supply system supplies cold air to the outside of the controlled atmosphere container 5. The cold air channel connects the inside and the outside of the controlled atmosphere container 5, so that the refrigeration and air supply system supplies cold air to the inside of the controlled atmosphere container 5, that is, to the compartment 111; the oxygen regulation module 2 conveys an oxygen-regulated air flow to the inside of the controlled atmosphere container 5, that is, to the compartment 111.

[0127] With this structural design, the oxygen-regulating module 2 delivers a regulated oxygen flow into the modified atmosphere container 5, thereby regulating the oxygen concentration inside the container 5. The moisture carried in the regulated oxygen flow increases the humidity within the container 5, delaying the drying of food stored there and improving its preservation effect. The cooling air supply system supplies cold air to the outside of the container 5, which circulates outside, carrying away some of the heat and cooling the container 5. This prevents excessive cold air from entering the container and interfering with the regulated oxygen flow, thus avoiding undesirable fluctuations in oxygen concentration and preventing food from drying out, thus maintaining the preservation effect. The cold air channel allows some cold air to be delivered into the container 5, preventing excessive moisture in the regulated oxygen flow from causing condensation and frost inside the container 5.

[0128] Specifically, the cylindrical body 3b has a first opening 31b, the modified atmosphere container 5 includes a box body 51 and a cover body 52, the box body 51 has a third opening 511, the third opening 511 faces the inner wall of the cylindrical body 3b, and the cover body 52 covers the third opening 511.

[0129] The opening directions of the first opening 31b and the third opening 511 are different. Preferably, the opening directions of the first opening 31b and the third opening 511 are perpendicular to each other. This facilitates the processing of the cylinder 3b and the modified atmosphere container 5, improves feasibility, and also makes it easier for the second door 53 to move the modified atmosphere container 5 relative to the cylinder 3b for storing and retrieving items.

[0130] The modified atmosphere container 5 also includes a second door 53, which is connected to the box body 51b. The second door 53 is used to open or close the first opening 31b. By pulling the second door 53, the box body 51 can move relative to the cylinder 3b. When the box body 51 moves to the point where the third opening 511 is at least partially exposed to the external environment, the user can store and retrieve food into the box body 51.

[0131] The cover 52 is fixedly connected to the cylinder 3b. When the box 51 moves relative to the cylinder 3b, the position of the cover 52 relative to the cylinder 3b remains unchanged. When the box 51 moves to the point where the third opening 511 is completely inside the cylinder 3b, the cover 52 closes the box 51.

[0132] See Figures 6 to 8 The modified atmosphere container 5 also includes a connecting part 54, which connects the box body 51 and the second door body 53.

[0133] The connecting part 54 is provided with multiple ventilation openings 541. In this way, after the cold air enters the cylinder 3, most of it flows towards the second door 53 through the space between the cover 52 and the cylinder 3b. After flowing to the position near the second door 53, it flows through the multiple ventilation openings 541 into the space between the box 51 and the second door 53, and then flows through the side of the box 51 away from the cover 52, and then flows out of the compartment 111 from the side of the box 51 away from the second door 53. In this way, most of the cold air can circulate around the outer periphery of the controlled atmosphere container 5 and then be discharged from the compartment 111.

[0134] The cold air channel includes at least one of a slit, a hole 61, and a groove 62.

[0135] In one embodiment, the cold air channel is a slit; specifically, the cold air channel is a narrow slit between the cover 52 and the box 51, through which cold air can be controlled to enter the modified atmosphere container 5 in a small amount.

[0136] See Figures 9 to 11 In another embodiment, the cold air channel is at least one of hole 61 and slot 62 to limit the amount of cold air entering the modified atmosphere container 5, so as to avoid excessive cold air entering the modified atmosphere container 5 and causing fluctuations in the oxygen concentration in the modified atmosphere container 5.

[0137] Preferably, multiple cold air channels are provided to increase the amount of cold air entering the controlled atmosphere container 53 to a certain extent, so as to achieve the effects of preventing condensation and frost formation.

[0138] In summary, the refrigeration equipment 100 and its control method of this application, by controlling the oxygen regulating module 2 to supply oxygenated air to the compartment 111, can regulate the oxygen concentration inside the compartment 111, thereby improving the preservation effect inside the compartment 111. Furthermore, by controlling the air supply of the oxygen regulating module 2 and the air supply of the refrigeration air supply system to gradually decrease in a stepwise manner, the influence of the air supply of the refrigeration air supply system on the oxygenated air supplied by the oxygen regulating module 2 can be reduced, thereby preventing the oxygen concentration in the compartment 111 from deviating from its preset oxygen-rich environment or its preset oxygen-deficient environment, further improving the preservation effect of the compartment 111.

[0139] The structure, features and effects of this application have been described in detail above with reference to the embodiments shown in the accompanying drawings. The above description is only a preferred embodiment of this application, but this application does not limit the scope of implementation to what is shown in the drawings. Any changes made in accordance with the concept of this application, or modifications to equivalent embodiments with equivalent changes, that do not exceed the spirit covered by the specification and drawings, should be within the protection scope of this application.

Claims

1. A control method for a refrigeration device (100), characterized in that, include: Control the start of the cooling and air supply system to supply air to the room (111); The oxygen regulation module (2) is activated to deliver an oxygen regulation flow into the chamber (111); The air supply of the oxygen regulating module (2) and the air supply of the cooling air supply system are controlled to gradually decrease in a stepwise manner.

2. The control method for the refrigeration equipment (100) according to claim 1, characterized in that, include: According to the running time, the air supply of the oxygenation module (2) and the air supply of the cooling air supply system are gradually reduced in a stepwise manner.

3. The control method for the refrigeration equipment (100) according to claim 1, characterized in that, include: The oxygen regulation module (2) and the cooling air supply system are started and run simultaneously.

4. The control method for the refrigeration equipment (100) according to claim 3, characterized in that, include: When starting up, the timing begins, and the air supply of the oxygen regulating module (2) is controlled to be Vq1, and the air supply of the cooling air supply system is controlled to be Vf1; After time t1, the gas supply of the oxygen regulating module (2) is controlled to be Vq2; After time t2, the air supply volume of the cooling air supply system is controlled to be Vf2; After time t3, the gas supply of the oxygen regulating module (2) is controlled to be Vq3, and the air supply of the cooling air supply system is controlled to be Vf3. Among them, Vq1>Vq2>Vq3, Vf1>Vf2>Vf3.

5. The control method for the refrigeration equipment (100) according to claim 1, characterized in that, include: After the oxygen regulation module (2) is started and runs for a preset time, the cooling air supply system is started and run.

6. The control method for the refrigeration equipment (100) according to claim 5, characterized in that, include: The oxygen regulation module (2) is started and operates with an air supply of Vq1; After time t1, the cooling and air supply system is started and runs with an air supply volume of Vf1, and the air supply volume of the oxygen regulation module (2) is controlled to be Vq2. After time t2, the air supply volume of the cooling and air supply system is controlled to be Vf2; After time t3, the gas supply of the oxygen regulating module (2) is controlled to be Vq3, and the air supply of the cooling air supply system is controlled to be Vf3. Among them, Vq1>Vq2>Vq3, Vf1>Vf2>Vf3.

7. The control method for the refrigeration equipment (100) according to claim 4 or 6, characterized in that, Vf1 satisfies the following condition: the temperature inside the chamber (111) reaches the first preset temperature T1; Vf2 satisfies the following condition: the temperature inside the chamber (111) reaches the second preset temperature T2; Vf3 satisfies the following condition: the temperature inside the chamber (111) is maintained at T2; Where T1 > T2.

8. The control method for the refrigeration equipment (100) according to claim 4 or 6, characterized in that, The preset concentration of oxygen in the chamber (111) is greater than the concentration of oxygen in the air; Among them, Vq1, Vq2, and Vq3 respectively satisfy the following conditions: the oxygen concentration in the chamber (111) reaches c1, c2, and c3 respectively; c1>c2>c3.

9. The control method for the refrigeration equipment (100) according to claim 4 or 6, characterized in that, The preset concentration of oxygen in the chamber (111) is lower than the concentration of oxygen in the air; Wherein, Vq1, Vq2, and Vq3 respectively satisfy: making the oxygen concentration in the compartment (111) reach c1, c2, and c3 respectively; c1 <c2<c3。 10. The control method for the refrigeration equipment (100) according to claim 1, characterized in that, The gas supply of the oxygen regulating module (2) is adjusted by controlling the operating power, operating current or opening angle of the gas circuit valve of the oxygen regulating module (2). The gas supply of the oxygen regulating module (2) is positively correlated with its operating power, operating current and opening angle of the gas circuit valve.

11. The control method for the refrigeration equipment (100) according to claim 1, characterized in that, The air volume of the refrigeration and air supply system is adjusted by controlling the compressor speed or the opening angle of the damper. The air volume of the refrigeration and air supply system is positively correlated with the compressor speed and the opening angle of the damper, respectively.

12. A refrigeration device (100), characterized in that, include: Room (111); A cooling air supply system supplies cold air to the room (111); The oxygen regulation module (2) delivers an oxygen regulation flow into the chamber (111); The control system is connected to the cooling air supply system and the oxygen regulation module (2) respectively, and is used for: The cooling and air supply system is activated to supply air into the room (111); The oxygen conditioning module (2) is activated to deliver an oxygen conditioning flow into the compartment (111); The air supply of the oxygen regulating module (2) and the air supply of the cooling air supply system are controlled to gradually decrease in a stepwise manner.

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