Refrigerator and temperature control method for refrigerator

Abstract

Disclosed in the present invention is a refrigerator. The refrigerator comprises: a refrigerator body, in which several storage compartments are formed, and a refrigerating air duct for circulating refrigerating airflow to provide cold to at least one storage compartment; and an oxygen regulating assembly, which comprises an oxygen regulating module for preparing an oxygen regulating gas, and an oxygen regulating gas circuit for providing the oxygen regulating gas to at least one storage compartment. The refrigerating air duct is coupled to at least part of the oxygen regulating gas circuit to provide cold to the oxygen regulating gas circuit. Further disclosed in the present invention is a control method for the refrigerator. The control method comprises: acquiring a current temperature of an oxygen regulating gas, and comparing the current temperature of the oxygen regulating gas with an initial temperature of the oxygen regulating gas. In the present invention, the refrigerating airflow in the refrigerating air duct can be used to cool the oxygen regulating gas flow in the oxygen regulating gas circuit, preventing the temperature of the oxygen regulating gas flowing into the storage compartments from affecting the refrigeration temperature inside the storage compartments, and thereby facilitating the preservation of food in the storage compartments.

Description

Refrigerator and Refrigerator Temperature Control Methods

[0001] This application is based on and claims priority to Chinese patent applications No. 202411596149.0, No. 202422731617.2, No. 202411595967.9, No. 202422731362.X, and No. 202422731362.X, all of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of food preservation technology, and in particular to a refrigerator and a method for controlling the temperature of a refrigerator. Background Technology

[0003] As living standards improve, consumers have higher demands for refrigerators, hoping to extend the shelf life of food. Different foods have different oxygen requirements for storage. For fruits and vegetables, oxidation with oxygen damages nutrients, pigments, flavor compounds, and other components, making them unsuitable for storage in oxygen-rich environments. Fresh meat, on the other hand, requires sufficient oxygen to prolong its shelf life.

[0004] To address the aforementioned issues, existing refrigerators are equipped with oxygen regulation components. These components utilize an electrochemical reaction to produce oxygen-regulating gases (oxygen and hydrogen) from an electrolyte. The oxygen and hydrogen are then introduced into the oxygen-rich and oxygen-poor spaces, respectively, or an electrochemical reaction is used to reduce the oxygen in the oxygen-poor space, thereby regulating the oxygen content in different storage spaces.

[0005] However, the oxygen-controlled gas added to the storage space is generated by the electrolysis module, which generates heat during operation, resulting in a higher temperature of the delivered oxygen-controlled gas. This affects the temperature in the storage space and is detrimental to the storage of food. Summary of the Invention

[0006] The purpose of this invention is to provide a refrigerator and a method for controlling the temperature of a refrigerator, so as to overcome the shortcomings of the prior art.

[0007] To achieve one of the above objectives, the present invention provides a refrigerator, comprising:

[0008] The housing has several storage compartments inside and a refrigeration duct for circulating refrigeration airflow to provide cooling capacity to at least one of the storage compartments;

[0009] An oxygen conditioning assembly includes an oxygen conditioning module for preparing oxygen-conditioned gas and an oxygen conditioning path for supplying the oxygen-conditioned gas to at least one of the storage chambers.

[0010] The cooling duct is coupled to at least a portion of the oxygen conditioning circuit to provide cooling to the oxygen conditioning circuit.

[0011] As a further improvement of one embodiment of the present invention, the cooling air duct includes a cooling air duct that at least partially surrounds the storage room and a supply air duct for providing cooling airflow to the cooling air duct.

[0012] The cooling air duct has an air inlet and a return air inlet connected to the supply air duct. The cooling airflow flows through the air inlet, through the cooling air duct, and then through the return air inlet to the supply air duct to form a return air path. At least part of the oxygen conditioning path is coupled to the return air path.

[0013] As a further improvement of one embodiment of the present invention, at least a portion of the oxygen conditioning circuit is disposed at the return air inlet.

[0014] As a further improvement of one embodiment of the present invention, at least a portion of the oxygen conditioning circuit is coiled within the cooling air duct.

[0015] As a further improvement of one embodiment of the present invention, at least a portion of the oxygen conditioning circuit is wrapped around the outside of the cooling air duct to exchange heat with the cooling air duct.

[0016] As a further improvement to one embodiment of the present invention, the refrigerator further includes:

[0017] A storage container that internally defines the storage chamber;

[0018] A sealing housing is provided on the outside of at least a portion of the wall of the storage container, and a gap is provided between the sealing housing and the storage container to allow the flow of the cooling gas or the oxygen regulating gas.

[0019] As a further improvement of one embodiment of the present invention, the storage container includes:

[0020] The cover plate is fixed in the sealed housing;

[0021] A drawer having an upward-opening cavity, the drawer sliding against the sealing housing to move between an open position with the cavity open and a closed position with the cavity closed;

[0022] The cover is located above the drawer to seal the cavity in the closed position.

[0023] As a further improvement of one embodiment of the present invention, the gap forms the cooling air duct, and the air inlet and return air outlet are disposed on the sealing housing.

[0024] As a further improvement of one embodiment of the present invention, the oxygen conditioning circuit is connected to the gap, and the cover plate is provided with an air inlet for circulating the oxygen conditioning gas to the storage chamber. The air inlet and the air return are provided on the drawer.

[0025] As a further improvement of one embodiment of the present invention, the cover plate is provided with a breathable membrane at the air inlet position for the oxygen-regulating gas to pass through.

[0026] As a further improvement of one embodiment of the present invention, the oxygen conditioning path is configured as an oxygen-enriched path that supplies oxygen to the storage room.

[0027] And / or, the oxygen conditioning path is configured as an oxygen-deficient path to provide oxygen-deficient gas to the storage room.

[0028] As a further improvement of one embodiment of the present invention, a first temperature sensor is provided in the oxygen regulating circuit.

[0029] As a further improvement of one embodiment of the present invention, the first temperature sensor is disposed at one end of the outlet of the oxygen regulating circuit that connects to the storage chamber.

[0030] To achieve one of the above objectives, one embodiment of the present invention provides a temperature control method for a refrigerator, the temperature control method comprising:

[0031] In oxygen adjustment mode, the initial temperature T0 of the oxygen-adjusting gas and the current temperature T1 corresponding to the running time t in the oxygen adjustment mode are obtained respectively.

[0032] The current temperature T1 of the oxygen-conditioned gas is compared with the initial temperature T0 of the oxygen-conditioned gas; when T1 - T0 ≥ a℃, the refrigeration system is controlled to cool the oxygen-conditioned gas according to the refrigeration state of the refrigerator; when T1 - T0 < a℃, the steps of obtaining the current temperature T1 and comparing the current temperature T1 with the initial temperature T0 are repeated; where a is a constant greater than 0.

[0033] As a further improvement to one embodiment of the present invention, "controlling the refrigeration system according to the refrigeration state of the refrigerator" includes:

[0034] Determine whether the refrigeration system is in a refrigeration state;

[0035] If the refrigeration system is in a refrigeration state, the refrigeration airflow is controlled to enter the oxygen conditioning room according to the refrigeration state of the oxygen conditioning room.

[0036] If the refrigeration system is not in the refrigeration state, the temperature T2 of the oxygen-regulating chamber is determined. If the temperature T2 of the oxygen-regulating chamber is within the first threshold range, the refrigeration airflow is controlled to enter the oxygen-regulating chamber. If the temperature T2 of the oxygen-regulating chamber is within the second threshold range, the refrigeration system is controlled to switch to the refrigeration state. The second threshold range is greater than the first threshold range.

[0037] As a further improvement to one embodiment of the present invention, controlling whether the cooling airflow enters the oxygen conditioning room according to the cooling state of the oxygen conditioning room includes:

[0038] If the oxygen conditioning chamber is in a refrigeration state, the supply of refrigeration airflow to the oxygen conditioning chamber will stop when the temperature T2 of the oxygen conditioning chamber is lower than the temperature T3 of the shutdown node when the refrigeration system stops operating in the refrigeration state.

[0039] If the oxygen conditioning chamber is not in a cooling state, then when the temperature T2 of the oxygen conditioning chamber is within the third threshold range, the supply of cooling airflow to the oxygen conditioning chamber will be controlled until the temperature T2 of the oxygen conditioning chamber is less than the temperature T3 of the shutdown node, at which point the supply of cooling airflow to the oxygen conditioning chamber will stop.

[0040] As a further improvement of one embodiment of the present invention, the third threshold range is: T2≥T3+b, where b is a constant greater than 0.

[0041] As a further improvement of one embodiment of the present invention, the first threshold range is: T3≤T2<T3+b; the second threshold range is: T2≥T3+b; where b is a constant greater than 0.

[0042] As a further improvement of one embodiment of the present invention, when the temperature T2 of the oxygen conditioning chamber is within the first threshold range, the method further includes controlling the opening of the refrigeration fan in the refrigeration system.

[0043] As a further improvement of one embodiment of the present invention, the refrigeration fan operates with a duty cycle of a set threshold.

[0044] One embodiment of this application also provides a refrigeration device, including an oxygen regulating module, an oxygen regulating circuit, and a sealed housing. The oxygen regulating circuit connects the oxygen regulating module and the sealed housing to deliver the airflow generated by the oxygen regulating module to the sealed housing. The sealed housing includes an inner shell and an outer shell, and a hollow cavity is formed between the inner shell and the outer shell. The hollow cavity is filled with a cold storage material.

[0045] As a further improvement of one embodiment of this application, it also includes a storage chamber connected to the sealed housing, and the oxygen regulating circuit is also connected to the sealed housing and the storage chamber. The airflow generated by the oxygen regulating module enters the storage chamber after being cooled by the sealed housing.

[0046] As a further improvement of one embodiment of this application, a first drawer assembly is also included. The first drawer assembly includes a sealing housing with an opening facing forward, a drawer disposed within the sealing housing, and a cover plate covering the top of the drawer. The drawer includes a front cover that completely covers the front opening of the sealing housing, and the storage compartment is formed between the drawer and the cover plate.

[0047] As a further improvement of one embodiment of this application, the oxygen regulating circuit is connected to the storage chamber; the refrigeration equipment also includes a refrigeration system, which is connected to the cavity formed by the sealed shell, the drawer and the cover.

[0048] As a further improvement of one embodiment of this application, the oxygen regulating circuit is connected to the cavity formed by the sealed housing, the drawer and the cover plate; the cover plate is provided with an oxygen regulating hole, and the oxygen regulating hole is covered with an oxygen-permeable membrane; the refrigeration equipment also includes a refrigeration system, and the refrigeration system is connected to the storage chamber.

[0049] As a further improvement of one embodiment of this application, a second drawer assembly is also included. The second drawer assembly includes a sealing housing with an opening facing forward and a drawer disposed within the sealing housing. The drawer includes a front cover that completely covers the front opening of the sealing housing, and the storage compartment is formed between the sealing housing and the front cover.

[0050] As a further improvement of one embodiment of this application, the refrigeration device includes a refrigeration system and also forms a receiving chamber with an opening facing forward. The second drawer assembly is disposed in the receiving chamber, and the front end of the sealing housing is connected to the inner wall of the front end of the receiving chamber. The refrigeration system is in communication with the receiving chamber.

[0051] As a further improvement of one embodiment of this application, the oxygen regulating circuit is connected to the inside of the sealed housing.

[0052] As a further improvement of one embodiment of this application, the inner shell of the sealed housing is formed into a storage compartment.

[0053] As a further improvement of one embodiment of this application, a temperature sensor and an oxygen concentration sensor are provided inside the sealed housing.

[0054] One embodiment of this application also provides a refrigeration device, including a storage chamber, an oxygen regulating module, an oxygen regulating circuit, and a cold storage device. The oxygen regulating circuit connects the storage chamber and the oxygen regulating module to deliver the oxygen regulating flow generated by the oxygen regulating module to the storage chamber. The cold storage device is wrapped around the oxygen regulating circuit and is used to cool the oxygen regulating flow in the oxygen regulating circuit.

[0055] As a further improvement of one embodiment of this application, the oxygen regulation module includes an electrolyte reservoir for storing electrolyte, an anode plate and a cathode plate respectively connected to the positive and negative terminals of the power supply, and the anode plate and cathode plate are at least partially immersed in the electrolyte.

[0056] As a further improvement of one embodiment of this application, a drawer assembly is also included, the drawer assembly including a front-facing sealed housing, a drawer disposed within the sealed housing, and a cover plate covering the top of the drawer, the drawer including a front cover that completely covers the front opening of the sealed housing, and the storage compartment is formed between the drawer and the cover plate.

[0057] As a further improvement of one embodiment of this application, the oxygen regulating circuit is connected to the storage chamber; the refrigeration equipment also includes a refrigeration system, which is connected to the cavity formed by the sealed shell, the drawer and the cover.

[0058] As a further improvement of one embodiment of this application, the oxygen regulating circuit is connected to the cavity formed by the sealed housing, the drawer and the cover plate; the cover plate is provided with an oxygen regulating hole, and the oxygen regulating hole is covered with an oxygen-permeable membrane; the refrigeration equipment also includes a refrigeration system, and the refrigeration system is connected to the storage chamber.

[0059] As a further improvement of one embodiment of this application, a drawer assembly is also included, the drawer assembly including a front-facing sealing housing and a drawer disposed within the sealing housing, the drawer including a front cover that completely covers the front opening of the sealing housing, and the storage compartment is formed between the sealing housing and the front cover.

[0060] As a further improvement of one embodiment of this application, the refrigeration device includes a refrigeration system and also forms a receiving chamber with an opening facing forward. The drawer assembly is disposed in the receiving chamber, and the front end of the sealing housing is connected to the inner wall of the front end of the receiving chamber. The refrigeration system is in communication with the receiving chamber.

[0061] As a further improvement of one embodiment of this application, the oxygen regulating circuit is connected to the inside of the sealed housing.

[0062] As a further improvement of one embodiment of this application, the sealing housing is provided with a moisture-controlling through hole, and the moisture-controlling through hole is covered with a moisture-permeable membrane.

[0063] As a further improvement of one embodiment of this application, at least two drawer assemblies are provided, and two of the at least two drawer assemblies are arranged close to each other, with the oxygen regulating passage disposed between the two close-arranged drawer assemblies.

[0064] One embodiment of this application also provides a refrigeration device, including an oxygen regulating module, an oxygen regulating line, and a storage chamber. The oxygen regulating line connects the oxygen regulating module and the storage chamber to deliver the oxygen regulating flow to the storage chamber. A dryer and / or a humidifier are provided in the oxygen regulating line.

[0065] As a further improvement of one embodiment of this application, the oxygen conditioning path is provided with at least two, and the dryer and humidifier are respectively provided in different oxygen conditioning paths.

[0066] As a further improvement of one embodiment of this application, a drawer assembly is also included, the drawer assembly including a front-facing sealed housing, a drawer disposed within the sealed housing, and a cover plate covering the top of the drawer, the drawer including a front cover that completely covers the front opening of the sealed housing, and the storage compartment is formed between the drawer and the cover plate.

[0067] As a further improvement of one embodiment of this application, the oxygen regulating circuit is connected to the storage chamber; the refrigeration equipment also includes a refrigeration system, which is connected to the cavity formed by the sealed shell, the drawer and the cover.

[0068] As a further improvement of one embodiment of this application, the oxygen regulating circuit is connected to the cavity formed by the sealed housing, the drawer and the cover plate; the cover plate is provided with an oxygen regulating hole, and the oxygen regulating hole is covered with an oxygen-permeable membrane.

[0069] The refrigeration equipment also includes a refrigeration system, which is connected to the storage room.

[0070] As a further improvement of one embodiment of this application, a drawer assembly is also included, the drawer assembly including a front-facing sealing housing and a drawer disposed within the sealing housing, the drawer including a front cover that completely covers the front opening of the sealing housing, and the storage compartment is formed between the sealing housing and the front cover.

[0071] As a further improvement of one embodiment of this application, the refrigeration device includes a refrigeration system and also forms a receiving chamber with an opening facing forward. The drawer assembly is disposed in the receiving chamber, and the front end of the sealing housing is connected to the inner wall of the front end of the receiving chamber. The refrigeration system is in communication with the receiving chamber.

[0072] As a further improvement of one embodiment of this application, the oxygen regulating circuit is connected to the inside of the sealed housing.

[0073] As a further improvement of one embodiment of this application, the sealing housing is provided with a moisture-controlling through hole, and the moisture-controlling through hole is covered with a moisture-permeable membrane.

[0074] As a further improvement of one embodiment of this application, the storage room is equipped with a temperature sensor, a humidity sensor and an oxygen concentration sensor.

[0075] Compared with the prior art, the present invention can use the cooling airflow in the cooling duct to cool down the oxygen flow in the oxygen conditioning circuit, so that the temperature of the oxygen conditioning gas flowing into the storage room will not affect the cooling temperature in the storage room, which is beneficial to the storage of food in the storage room. Attached Figure Description

[0076] Figure 1 is an isometric view of a refrigerator according to this embodiment;

[0077] Figure 2 is a front view of a portion of the internal structure of the refrigerator in this embodiment;

[0078] Figure 3 is a cross-sectional view along line A-A in Figure 2;

[0079] Figure 4 is an exploded view of the structure of adjacent storage rooms in this embodiment;

[0080] Figure 5 is a cross-sectional view of the storage room in this embodiment;

[0081] Figure 6 is an exploded view of the storage container and the sealed shell in this embodiment;

[0082] Figure 7 is a schematic diagram of the piping layout of the oxygen regulating circuit in one embodiment;

[0083] Figure 8 is a structural diagram of two matching methods of the sealed shell and the storage container in this application (the upper left is the storage container with the front cover, the upper right is the storage container without the front cover, and the lower right is the oxygen adjustment module).

[0084] Figure 9 is a front view of Figure 8.

[0085] Figure 10 is a cross-sectional view along the B-B direction in Figure 9.

[0086] Figure 11 is an enlarged view of point C in Figure 10.

[0087] Figure 12 is a cross-sectional view along the D-D direction in Figure 9.

[0088] Figure 13 is a schematic diagram of the cooperation between the sealed housing, the oxygen regulating circuit and the oxygen regulating module in an embodiment of this application.

[0089] Figure 14 is a cross-sectional view along the E-E direction in Figure 13.

[0090] Figure 15 is a schematic diagram of the cross-section of the oxygen regulating circuit and the external cold storage material.

[0091] Figure 16 is a schematic diagram of the piping layout of the oxygen regulating circuit in another embodiment;

[0092] Figure 17 is a schematic diagram of the structure of the top of the storage container in this embodiment;

[0093] Figure 18 is a flowchart of the refrigerator temperature adjustment method in this embodiment;

[0094] Figure 19 is a flowchart of the cooling system switching oxygen gas cooling in the refrigerator temperature regulation method of this embodiment.

[0095] Reference numerals: 10. Cabinet; 11. Outer shell; 12. Inner liner; 13. Storage compartment; 14. Sealed shell; 141. Air inlet; 142. Air return outlet; 143. Inner shell; 144. Outer shell; 145. Hollow cavity; 15. Storage container; 151. Cover plate; 1511. Oxygen regulating vent; 1512. Oxygen permeable membrane; 152. Drawer; 153. Breathable membrane; 154. Guide plate; 155. Flow channel; 156. Flow guide rib; 157. Front cover; 158. Moisture permeable vent; 20. Door; 30. Cooling duct; 31. Air supply duct; 32. Cooling duct; 40. Oxygen regulating component; 41. Oxygen regulating module; 42. Oxygen regulating circuit; 50. Cold storage material; 60. Receiving chamber. Detailed Implementation

[0096] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0097] The terms used in this embodiment, such as "upper," "above," "lower," and "below," which indicate spatial relative positions, are used for ease of explanation to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms "spatial relative position" may be intended to include different orientations of the device besides those shown in the figures during use or operation. For example, in this embodiment, "upper," "lower," "left," "right," "horizontal," and "vertical" all refer to the spatial relative positions of the refrigerator under normal operating conditions.

[0098] It should be noted that in this invention, "oxygen-rich chamber" refers to a space with a relatively high oxygen concentration, in which users can store oxygen-loving ingredients; "oxygen-deficient chamber" refers to a space with a relatively low oxygen concentration, in which users can store ingredients that are prone to oxidation.

[0099] Figures 1-9 in this embodiment are structural diagrams of a refrigerator according to one embodiment, and Figures 10-11 are flowcharts of a control method for a refrigerator according to one embodiment. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the relevant figures.

[0100] An embodiment of the present invention provides a refrigerator. Referring to FIG1, the refrigerator includes a cabinet 10 and a door 20 pivotally connected to the cabinet 10. The cabinet 10 may include an outer shell 11 and a plurality of inner liners 12. The outer shell 11 is located on the outermost side of the entire refrigerator to protect the entire refrigerator. The plurality of inner liners 12 are wrapped by the outer shell 11, and an insulation layer is provided in the space between the inner liners and the outer shell 11 to reduce heat loss from the inner liners 12.

[0101] Each inner liner 12 can define a forward-opening storage compartment, and the storage compartment can be configured as a refrigerator compartment, freezer compartment, variable temperature compartment, etc. The specific number and function of the storage compartments can be configured according to pre-defined needs. A door 20 is movably disposed in front of the inner liner 12 to open and close the storage compartment of the inner liner 12.

[0102] Referring to Figure 2, the housing 10 is provided with a plurality of storage compartments 13 and a refrigeration air duct 30 for circulating refrigerated airflow to provide cooling capacity to at least one storage compartment 13. A storage compartment 13 refers to a space used for storing items. For example, the interior of the inner liner 12 can define a storage room, and the storage compartment 13 can be the internal space of a storage room or the internal space of a storage container 15 within a storage space. The storage compartment 13 is a refrigerator compartment.

[0103] The relative position between the cooling duct 30 and the storage chamber 13 can be set according to actual needs. The cooling airflow flowing through the cooling duct 30 can flow through the interior of the storage chamber 13 or through the outer periphery of the storage chamber 13, thereby providing cooling capacity to the storage chamber 13. For example, the cooling duct 30 can be a supply air duct 31, which is located on one side of the storage chamber 13. The storage chamber 13 is provided with an inlet and an outlet. The supply air duct 31 is connected to the storage chamber 13 through the inlet and the outlet, so that the cooling airflow flowing through the cooling duct 30 enters the storage chamber 13 through the inlet and exits through the outlet after passing through the storage chamber 13. Alternatively, the cooling duct 30 can be an additional dedicated air duct that connects to the supply air duct 31. This cooling duct 30 can be located on the outer periphery of the storage chamber 13, so that the cooling airflow flowing through the cooling duct 30 exchanges heat with the storage chamber 13.

[0104] At least one storage room 13 is an oxygen-regulating room, which can be an oxygen-enriched room or an oxygen-deficient room. The specific number, type and location of the oxygen-regulating rooms can be configured according to the preset requirements, which will not be elaborated here.

[0105] Referring to Figure 4, the housing 10 is also provided with an oxygen conditioning component 40, which includes an oxygen conditioning module 41 for preparing oxygen conditioning gas and an oxygen conditioning path 42 for providing oxygen conditioning gas to at least one storage chamber 13.

[0106] The refrigeration duct 30 is coupled to at least a portion of the oxygen regulating passage 42, and the oxygen regulating passage 42 is directly or indirectly connected to the storage chamber 13 to introduce oxygen regulating gas into the storage chamber 13, thereby regulating the oxygen content in the storage chamber 13. The coupling of the refrigeration duct 30 and the oxygen regulating passage 42 means that the oxygen regulating passage 42 is located within an air passage through which the refrigeration airflow can pass, or that the oxygen regulating passage 42 is located outside an air passage through which the refrigeration airflow can pass and exchanges heat with the air passage through which the refrigeration airflow passes, so that the refrigeration airflow in the refrigeration duct 30 provides cooling capacity to the oxygen regulating passage 42.

[0107] The oxygen-regulating module 41 generates heat during the preparation of oxygen-regulating gas. The heat from the oxygen-regulating gas is transferred to the storage chamber 13, which will affect the storage of the food in the storage chamber 13. The cooling airflow in the cooling duct 30 can be used to cool down the oxygen-regulating airflow in the oxygen-regulating path 42, so that the temperature of the oxygen-regulating gas flowing into the storage chamber 13 will not affect the cooling temperature in the storage chamber 13, which is beneficial to the storage of the food in the storage chamber 13.

[0108] For example, referring to Figures 2 and 3, the cooling duct 30 includes a supply air duct 31 and a cooling air duct 32, with the supply air duct 31 and the cooling air duct 32 connected. The supply air duct 31 is connected to the refrigeration system in the refrigerator, and the cooling airflow provided by the refrigeration system flows into the supply air duct 31. The cooling air duct 32 is connected to or surrounds the exterior of a portion of the storage compartment 13, so as to provide the cooling capacity in the cooling air duct 32 to at least one storage compartment 13. An oxygen regulating passage 42 may be provided within the supply air duct 31 and / or the cooling air duct 32, or the oxygen regulating passage 42 may be provided outside the supply air duct 31 and / or the cooling air duct 32, to achieve heat exchange between the oxygen regulating passage 42 and the supply air duct 31 and / or the cooling air duct 32.

[0109] For example, the cooling duct 30 only includes the supply air duct 31 (not shown in the figure). The supply air duct 31 is connected to the refrigeration system in the refrigerator. The cooling airflow provided by the refrigeration system flows into the supply air duct 31. The supply air duct 31 extends to one side of at least one storage compartment 13 to provide cooling to the storage compartment 13. The oxygen regulating passage 42 can be set inside the supply air duct 31, or the oxygen regulating passage 42 can be set outside the supply air duct 31 to realize heat exchange between the oxygen regulating passage 42 and the supply air duct 31.

[0110] In one embodiment, referring to FIG5, the refrigeration device includes a drawer assembly, which includes a plurality of forward-opening sealed housings 14 connected to an inner liner 12. The sealed housings 14 may be cylindrical. The drawer assembly also includes a storage container 15 disposed within the sealed housings 14. The sealed housings 14 cover the outside of at least a portion of the wall of the storage container 15. As an example, the sealed housings 14 completely cover the outside of the storage container 15. The storage container 15 includes a cover plate 151 fixedly connected to the inside of the sealed housing 14, a drawer 152 slidably connected to the inside of the sealed housing 14, and a front cover 157 disposed on the front side of the drawer 152. The front cover 157 completely covers the front opening of the sealed housing 14. The drawer 152 has an upward-opening cavity. The space formed by the cover plate 151 and the drawer 152 is the storage compartment 13. When drawer 152 is stored inside the sealed housing 14, drawer 152 and cover plate 151 cooperate to form a storage compartment 13 that is sealed relative to the outside of the refrigerator. When drawer 152 is slid open to the outside of the sealed housing 14, drawer 152 is separated from cover plate 151, and at least part of the accommodating space in drawer 152 is located outside the sealed housing 14, making it convenient for users to take out and put in items.

[0111] Referring to Figure 6, a gap forms a cooling air duct 32 between the sealing housing 14 and the storage container 15. An air supply duct 31 extends between the sealing housing 14 and the inner wall of the inner liner 12, and is connected to the cooling air duct 32. The cooling air duct 32 has an air inlet 141 and an air return outlet 142 that communicate with the air supply duct 31. The air inlet 141 and the air return outlet 142 are separated by the sealing housing 14 and the storage container 15. The air inlet 141 is located on the sealing housing 14 above the storage container 15, and the air return outlet 142 is located on the sealing housing 14 below the storage container 15.

[0112] The cooling airflow flows through the air inlet 141, passes through the cooling air duct 32 above the storage container 15, and flows from one side of the storage container 15 to below it. Then, it flows through the return air inlet 142 to the supply air duct 31 to form a return air path. The cooling airflow flows in the return air path, and the cooling energy in the cooling airflow is radiated to the storage compartment 13 through the drawer 152 and the cover 151, thereby regulating the temperature of the storage compartment 13 for the stored items.

[0113] Referring to Figure 7, the oxygen conditioning passage 42 is configured as an oxygen conditioning pipe connecting the oxygen conditioning module 41 and the storage chamber 13. The oxygen conditioning pipe is used to introduce the oxygen-conditioned gas prepared in the oxygen conditioning module 41 into the storage chamber 13 to regulate the oxygen content in the storage chamber 13. A portion of the oxygen conditioning pipe (heat exchange section) passes through the return air inlet 142 and is distributed in an S-shape, ring shape, or spiral shape at the return air inlet 142.

[0114] The cooling airflow at the return air end of the return air duct is used to cool the oxygen conditioning duct 42. This not only allows the return airflow to displace some of the heat of the oxygen conditioning duct 42, but also does not affect the temperature at the air inlet end of the return air duct, thus ensuring the normal cooling supply of the return air duct to the storage room 13.

[0115] In other embodiments, contrary to the foregoing, the oxygen regulating passage 42 is connected to the aforementioned cooling air duct 32 formed by the sealed housing 14, drawer 152, and cover plate 151; the cover plate 151 is provided with an oxygen regulating through hole 1511, which is covered with an oxygen-permeable membrane 1512; the refrigeration system is connected to the storage chamber 13. The cover plate 151 has an oxygen regulating through hole 1511, and the oxygen regulating through hole 1511 is covered with an oxygen-permeable membrane 1512, meaning that oxygen in the storage chamber 13 and the aforementioned cooling air duct 32 can pass through the oxygen-permeable membrane 1512. (Not shown, but Figure 11 can be used as a reference)

[0116] When the oxygen regulating line 42 is connected to the cooling air duct 32, if the storage chamber 13 requires an oxygen-enriched environment, the oxygen regulating module 41 provides an oxygen-enriched flow. After the oxygen-enriched flow enters the cooling air duct 32, the oxygen concentration in the cooling air duct 32 is high, and the oxygen concentration in the storage chamber 13 is low. The oxygen passes through the oxygen-permeable membrane 1512 from the side with high concentration (cooling air duct 32) to the side with low concentration (storage chamber 13), thereby increasing the oxygen content in the storage chamber 13.

[0117] If the storage chamber 13 requires an oxygen-deficient environment, the oxygen regulating module 41 provides an oxygen-deficient flow. After the oxygen-deficient flow enters the cooling air duct 32, the oxygen concentration in the cooling air duct 32 is low, while the oxygen concentration in the storage chamber 13 is high. The oxygen passes through the oxygen permeable membrane 1512 from the side with high concentration (storage chamber 13) to the side with low concentration (cooling air duct 32), thereby reducing the oxygen content in the storage chamber 13.

[0118] At this time, the refrigeration system of the refrigeration equipment can be directly connected to the storage room 13 to directly control the temperature of the storage room 13.

[0119] In other embodiments, the storage container 15 includes only a drawer 152 and a front cover 157 disposed on the front side of the drawer 152, without a cover plate 151. The front cover 157 completely covers the front opening of the sealed housing 14, and a storage compartment 13 is formed between the sealed housing 14 and the front cover 157. Of course, the items are still stored in the drawer 152. For ease of distinction, the aforementioned drawer assembly with a cover plate 151 is the first drawer assembly, while the drawer assembly without a cover plate 151 in this embodiment is the second drawer assembly.

[0120] In this design, the internal space of the sealed housing 14 is not divided into two, but rather into only one.

[0121] In some embodiments of this implementation, the oxygen regulating passage 42 is connected to the interior of the sealing housing 14. In Figure 12, a through hole is provided at the rear end of the sealing housing 14 to communicate with the oxygen regulating passage 42, so that the oxygen-rich or oxygen-poor flow generated by the oxygen regulating module 41 enters the storage chamber 13 formed by the sealing housing 14.

[0122] In some embodiments of this implementation, the refrigeration device further includes a forward-facing receiving chamber 60. As shown in Figure 12, the rear wall of the receiving chamber 60 is a duct cover, which is not shown. Therefore, the receiving chamber 60 appears to have no rear wall in the figure (in reality, it does have a rear wall). A sealing housing 14 is disposed within the receiving chamber 60, and the front end of the sealing housing 14 is connected to the inner wall of the front end of the receiving chamber 60. The refrigeration system is connected to the receiving chamber 60. As can be seen in Figure 12, the sealing housing 14 is surrounded by the receiving chamber 60. Since the front end of the sealing housing 14 is connected to the inner wall of the front end of the receiving chamber 60, the receiving chamber 60 forms a sealed space due to the presence of the sealing housing 14. It has a similar structure and function to the aforementioned cooling duct 32. The oxygen flow is regulated to enter the storage chamber 13 to regulate the oxygen concentration within the storage chamber 13. The refrigeration system is connected to the receiving chamber 60 outside the storage chamber 13, and the cooling energy is radiated into the storage chamber 13 to control the temperature of the storage chamber 13.

[0123] In an optional embodiment, as shown in Figures 13 and 14, the sealed housing 14 may include an inner housing 143 and an outer housing 144, with a hollow cavity 145 formed between the inner housing 143 and the outer housing 144, and the hollow cavity 145 filled with a cold storage material. The cold storage material may be a eutectic phase change material prepared by mixing two or more phase change materials, such as a blend of octanoic acid and lauric acid, or a blend of dodecyl alcohol and octanoic acid.

[0124] The sealed housing 14 can receive the oxygen flow generated by the oxygen regulating module 41. Since the sealed housing 14 includes an inner housing 143 and an outer housing 144, the hollow cavity 145 between the inner housing 143 and the outer housing 144 is filled with a cold storage material, which can cool the oxygen flow from the oxygen regulating module 41 and prevent the temperature inside the aforementioned storage chamber 13 from rising when the high-temperature oxygen flow is used for storage.

[0125] The sealed housing 14 can serve as the storage chamber 13 as described above for storing items, and can also serve as an intermediate container between the oxygen regulating module 41 and the aforementioned storage chamber 13 for storing items. It is only used to cool the oxygen regulating flow (that is, the oxygen regulating flow is cooled before entering the storage chamber 13, so that it will not cause temperature fluctuations in the storage chamber 13). In this case, the oxygen regulating path 42 is divided into a first oxygen regulating path and a second oxygen regulating path. The specific flow direction of the oxygen regulating flow is: oxygen regulating module 41 - first oxygen regulating path - sealed housing 14 as intermediate container - second oxygen regulating path - storage chamber 13.

[0126] In an optional embodiment, a temperature sensor and an oxygen concentration sensor are installed inside the sealed housing 14 to monitor the temperature and oxygen concentration inside the sealed housing 14. When the temperature inside the sealed housing 14 is too high, the temperature is lowered by releasing cold energy from the cold storage material, or the oxygen regulating module 41 is paused from generating the oxygen regulating flow. The oxygen regulating flow is resumed only after the temperature inside the sealed housing 14 drops to a preset range. When the oxygen concentration inside the sealed housing 14 is too high (usually corresponding to an oxygen-rich environment in the storage chamber 13), the oxygen regulating module 41 can be controlled to stop working. When the oxygen concentration inside the sealed housing 14 is too low (usually corresponding to an oxygen-deficient environment in the storage chamber 13), the oxygen regulating module 41 can also be controlled to stop working.

[0127] As another way to cool the oxygen flow, the refrigeration equipment also includes a cold storage device, which is wrapped around the oxygen flow path 42 and is used to cool the oxygen flow in the oxygen flow path 42.

[0128] In some embodiments of this implementation, the cold storage device is a cold storage material 50 that can absorb and store cold energy. As shown in FIG15, the cold storage material 50 is wrapped around the oxygen regulating passage 42 and extends from one end of the oxygen regulating passage 42 near the oxygen regulating module 41 to the storage chamber 13, so that the oxygen regulating flow generated by the oxygen regulating module 41 can be cooled by the cold storage material 50 after it is output from the oxygen regulating module 41.

[0129] In some embodiments of this implementation, the length of the cold storage material 50 is 2 / 3 of the length of the oxygen conditioning path 42 to ensure that the cold storage material 50 can provide sufficient cooling capacity for the oxygen conditioning flow delivery path.

[0130] In some embodiments of this implementation, the thickness of the cold storage material 50 is 3-5 mm, which is sufficient for cooling the oxygen flow without taking up too much space for the refrigeration equipment.

[0131] In some embodiments of this implementation, the cold storage material 50 is a eutectic phase change material prepared by mixing two or more phase change materials, such as a combination of octanoic acid and lauric acid, or a combination of dodecanoic acid and octanoic acid.

[0132] Of course, a cold storage device can also be a device that can generate cold energy itself.

[0133] In an optional embodiment, referring to FIG16, the inner liner 12 is provided with at least two sealed shells 14 and storage containers 15 respectively disposed in the two sealed shells 14. The oxygen regulating passage 42 is disposed between adjacent sealed shells 14. As an example, the oxygen regulating pipe is embedded in the side wall of any sealed shell 14. The sealed shell 14 is provided with a fixing groove. The oxygen regulating pipe is engaged with the fixing groove. That is, the heat exchange section of the oxygen regulating pipe is located outside the cooling air duct 32 between the sealed shell 14 and the storage container 15. The heat exchange section of the oxygen regulating pipe is adjacent to the cooling air duct 32, realizing heat exchange between the oxygen regulating pipe and the cooling air duct 32, and the oxygen regulating flow in the oxygen regulating pipe can be cooled smoothly.

[0134] In an optional embodiment, the air inlet 141 and the air return outlet 142 are disposed on the side wall of the storage container 15 (not shown in the figure), specifically on the side wall of the drawer 152. The sealing housing 14 is provided with connecting openings at the positions of the air inlet 141 and the air return outlet 142, so as to allow the cooling airflow in the air supply duct 31 to flow into the drawer 152, thereby forming a return air path in the drawer 152. The heat exchange section of the oxygen regulating pipe is connected to the gap between the storage container 15 and the sealing housing 14 after direct or indirect heat exchange. The cover plate 151 is provided with an air inlet for allowing the oxygen regulating gas to flow into the storage chamber 13, so that the oxygen regulating gas in the gap is replenished into the storage chamber 13 between the cover plate 151 and the drawer 152 through the air inlet.

[0135] Referring to Figure 17, a breathable membrane 153 covering the air inlet can also be connected to the cover plate 151. The breathable membrane 153 can be a waterproof breathable membrane 153, which can block moisture in the external space of the storage room 13 while ensuring that the oxygen-controlled gas can pass through the breathable membrane 153.

[0136] The top of the cover plate 151 or the sealing shell 14 may also be provided with a moisture permeable hole 158, and the moisture permeable hole 158 is covered with a moisture permeable membrane (not shown). According to the humidity requirements of the food stored in the storage room 13, when the temperature of the storage room 13 is controlled by the refrigeration system, the humidity in the storage room 13 can also be controlled by the moisture permeable membrane.

[0137] As shown in Figure 12, taking the drawer 152 without a cover plate 151 at the top as an example (that is, the sealed housing 14 and the front cover 157 form a storage chamber 13), when a high humidity environment is required in the storage chamber 13, the cold air flowing into the receiving chamber 60 is humidified, making the humidity in the receiving chamber 60 higher, while the humidity in the storage chamber 13 is lower. Water vapor will pass through the moisture-permeable membrane from the high humidity side (receiving chamber 60) into the low humidity side (storage chamber 13), thereby increasing the humidity in the storage chamber 13.

[0138] When a low-humidity environment is required in storage chamber 13, the cold air flowing into the receiving chamber 60 is dehumidified, so that the humidity in the receiving chamber 60 is lower, while the humidity in storage chamber 13 is higher. Water vapor will pass through the moisture-permeable membrane from the high-humidity side (storage chamber 13) into the low-humidity side (receiving chamber 60), thereby reducing the humidity in storage chamber 13.

[0139] Of course, in addition to regulating the humidity in the storage room 13 by setting a moisture-permeable membrane, humidity can also be regulated by setting a dryer and / or a humidifier in the oxygen regulating line 42. This includes setting a dryer only in the oxygen regulating line 42 to provide a dry oxygen flow to the storage room 13; setting a humidifier only in the oxygen regulating line 42 to provide a high humidity oxygen flow to the storage room 13; and setting both a dryer and a humidifier in the oxygen regulating line 42, turning on the dryer or humidifier according to the humidity requirements of the storage room 13.

[0140] When storage chamber 13 requires low-humidity air, the oxygen flow in the oxygen conditioning circuit 42 is dehumidified by a dryer. The dehumidified oxygen flow is then delivered into storage chamber 13, further reducing the humidity within storage chamber 13. The dryer humidifies the oxygen flow to reduce humidity, thus achieving a low-humidity, high-temperature oxygen flow.

[0141] When storage chamber 13 requires high humidity air, a humidifier is used to humidify the oxygen flow in the oxygen conditioning circuit 42. The humidified oxygen flow is then delivered into storage chamber 13, which also increases the humidity inside storage chamber 13. The humidifier only increases the humidity of the oxygen flow in the oxygen conditioning circuit 42, thereby obtaining a high-humidity, low-temperature oxygen flow.

[0142] At least two oxygen regulating lines 42 are provided, with the dryer and humidifier respectively installed in different oxygen regulating lines 42. As shown in Figure 13, one end of the oxygen regulating line 42 is connected to the oxygen regulating module 41, and the other end is split into two, both of which are connected to the storage chamber 13. Of course, Figure 13 is only a schematic diagram of the oxygen regulating line 42 connecting the oxygen regulating module 41 and the storage chamber 13, and does not mean that the oxygen regulating line 42 is necessarily connected to the top of the oxygen regulating module 41 and the storage chamber 13. By installing the dryer and humidifier in different oxygen regulating lines 42, the humidity of the oxygen flow before the switch in the oxygen regulating line 42 can be better prevented from affecting the humidity after the switch when the storage chamber 13 switches between high humidity and low humidity.

[0143] Furthermore, in this embodiment, referring to FIG17, a flow guiding structure is provided on the cover plate 151 to guide the cooling airflow. A flow guide plate 154 is provided around the upper edge of the cover plate 151, and the air inlet is located within the area enclosed by the flow guide plate 154. The flow guide plate 154 is set in an open shape on one side of the air inlet 141, and the width of the opening corresponds to the width of the air inlet 141, so as to form a flow guiding channel 155 connected to the air inlet 141 at the opening position of the flow guide plate 154. Under the limiting action of the flow guide plate 154, the cooling airflow enters the flow guiding channel 155 through the air inlet 141, which can make the cooling airflow enter the cooling air duct 32 more concentratedly, thereby transferring the cooling capacity to the storage chamber 13 more concentratedly.

[0144] The upper edge of the cover plate 151 is also provided with several guide ribs 156. The guide ribs 156 are located within the space enclosed by the guide plate 154 and near the opening. Therefore, the several guide ribs 156 can divert the cooling airflow, so that the cooling airflow enters the cooling air duct 32 more evenly, so as to transfer the cooling capacity of the cooling airflow to the storage chamber 13 more evenly.

[0145] In one embodiment, a first temperature sensor is provided in the oxygen regulating circuit 42. For example, the first temperature sensor is located at the end of the oxygen regulating circuit 42 that is connected to the air outlet of the storage chamber 13. The first temperature sensor can monitor the temperature of the oxygen regulating gas added to the storage chamber 13 in real time. When the temperature of the oxygen regulating gas exceeds the set threshold range, the refrigerator refrigeration system can be started to form a cooling airflow to cool the oxygen regulating gas in the oxygen regulating circuit 42.

[0146] The first temperature sensor is located at the outlet end of the oxygen regulating circuit 42. This allows for timely monitoring of the temperature of the oxygen regulating gas entering the storage compartment 13, while also saving electricity consumed during refrigerator operation. The refrigeration duct 30 exchanges heat with the oxygen regulating circuit 42. If the temperature of the oxygen regulating gas entering the storage compartment 13 is within a preset temperature threshold range, there is no need to control the operation of the refrigeration system. In other words, during normal operation of the refrigerator's refrigeration system, as long as the temperature of the oxygen regulating gas is adequately controlled, there is no need to increase the refrigeration capacity. Therefore, placing the first temperature sensor at the outlet end is more effective than placing it in other locations. Of course, in optional embodiments, the first temperature sensor can also be placed at other locations within the oxygen regulating circuit 42; this embodiment does not impose specific limitations.

[0147] In one embodiment, the oxygen regulating module 41 is located outside the storage chamber 13, specifically outside the cooling duct 30. The heat generated by the oxygen regulating module 41 will not affect the cooling capacity of the cooling airflow. The oxygen regulating module 41 has the function of producing oxygen and producing or consuming oxygen. The oxygen produced by the oxygen regulating module 41 is introduced into the oxygen-enriched space. If the oxygen regulating module 41 produces hydrogen, the hydrogen is introduced into the oxygen-deficient space. If the oxygen regulating module 41 consumes oxygen, the oxygen-consuming component in the oxygen regulating module 41 is located in the oxygen-deficient space. This allows for the adjustment of the oxygen concentration in the oxygen-enriched and oxygen-deficient spaces, respectively. The oxygen regulating path 42 can be either an oxygen-enriched path or an oxygen-deficient path. As an example, in this embodiment, the oxygen regulating path 42 is an oxygen-enriched path, meaning the gas in the oxygen regulating path 42 is oxygen.

[0148] The oxygen regulation module 41 may include a shell disposed within the refrigerator body 10, electrodes disposed within the shell, an electrolyte reservoir, and a product gas collection chamber. The electrolyte reservoir stores electrolyte, which is connected to the reaction zone of the electrodes. The product gas collection chamber is also connected to the reaction zone of the electrodes. Through an electrochemical reaction, oxygen-regulating gas is separated from the electrolyte in the electrolyte reservoir. This oxygen-regulating gas enters the product gas collection chamber and is then transported to the oxygen-enriched space and / or the oxygen-deficient space, thereby regulating the oxygen concentration in the oxygen-enriched and oxygen-deficient spaces.

[0149] In an optional embodiment, the electrodes in the oxygen regulation module 41 can also be placed in an oxygen-deficient space or in a room connected to the oxygen-deficient space. The electrodes are in contact with the air in the oxygen-deficient space and undergo an oxidation-reduction reaction with the oxygen in the air, which can consume the oxygen in the oxygen-deficient space to reduce the oxygen concentration in the oxygen-deficient space.

[0150] The oxygen-regulating gas can include oxygen, hydrogen, etc., and the product gas gathering chamber can include an oxygen gathering chamber, a hydrogen gathering chamber, etc. This embodiment only uses the oxygen gathering chamber as an example for specific explanation. The structure of the hydrogen gathering chamber or other gas gathering chamber can be the same as that of the oxygen gathering chamber, and will not be described in detail here.

[0151] In one embodiment, the electrode includes a cathode plate and an anode plate. The cathode plate is connected to the negative terminal of an external power source, and the anode plate is connected to the positive terminal of the external power source. When current flows through the electrolyte (usually water), at the anode, hydroxide ions (OH−) in water molecules lose electrons to form oxygen and hydrogen ions (H+); while at the cathode, hydrogen ions gain electrons to form hydrogen gas. This process can be represented as:

[0152] At the anode, water molecules lose electrons and undergo an oxidation reaction to produce oxygen and hydrogen ions: 2H2O→O2+4H+;

[0153] At the cathode, hydrogen ions gain electrons and undergo a reduction reaction to produce hydrogen gas: 4H+ + 4e- → 2H2.

[0154] In one embodiment, during the refrigeration process of the refrigerator, the refrigeration system has three states: off, freezing, and refrigeration. The off state, also known as standby, occurs when the temperature in the refrigerator's refrigerator and freezer compartments reaches a preset temperature threshold, at which point the compressor and condenser stop operating. The freezing state refers to the refrigeration system directly or indirectly supplying the refrigerant gas to the freezer compartment, while the refrigeration state refers to the refrigeration system directly or indirectly supplying the refrigerant gas to the refrigerator compartment. In the freezing state, the temperature of the refrigerant gas produced by the compressor is lower than the temperature of the refrigerant gas in the refrigeration state, and the compressor can only be in one of the three states: off, freezing, or refrigeration.

[0155] Furthermore, the refrigerator has a freezing circulation module corresponding to the freezer compartment and a refrigeration circulation module corresponding to the refrigerator compartment. Taking the refrigeration circulation module as an example, the cooling air duct 30 includes a main air duct, and the air supply duct 31 is a refrigeration air duct. The refrigeration circulation module includes at least a refrigeration damper located at the connection between the air supply duct 31 and the main air duct, a refrigeration fan located in the air supply duct 31, and a compartment damper located at the connection between the air supply duct 31 and the cooling air supply duct 32. A second temperature sensor can be installed in the storage compartment 13 to obtain the temperature inside the storage compartment 13. During actual operation, the opening and closing of the refrigeration damper, the compartment damper, and the refrigeration fan can be controlled according to the temperature inside the storage compartment 13.

[0156] It should be noted that when the temperature in storage compartment 13 drops to a preset temperature threshold, the compressor switches from refrigeration mode to shutdown mode or freezing mode. Simultaneously, the refrigeration cycle module also stops operating. Therefore, the preset temperature threshold can be called the shutdown node temperature, and the shutdown node temperature range can be 2℃~8℃. When the temperature in storage compartment 13 exceeds a certain range of the shutdown node temperature, if the compressor is in shutdown mode, it switches from shutdown mode to refrigeration mode; if the compressor is in freezing mode, it switches to refrigeration mode after the freezing mode ends.

[0157] Other modules in the refrigerator can refer to the structure in the existing technology, and will not be described in detail here.

[0158] An embodiment of the present invention provides a temperature control method for a refrigerator, comprising the following steps:

[0159] In oxygen regulation mode, S10 acquires the initial temperature T0 of the oxygen-regulated gas and the current temperature T1 corresponding to the running time t in oxygen regulation mode. The temperature of the oxygen-regulated gas can be acquired through the first temperature sensor.

[0160] The oxygen regulation mode refers to the oxygen regulation component preparing oxygen-regulated gas and transferring it to the oxygen regulation chamber via the oxygen regulation path 42. The oxygen regulation chamber can be the storage chamber mentioned above, and the oxygen-regulated gas can be either oxygen-enriched or oxygen-deficient. The running time t of the oxygen regulation mode can be 0.5 min to 10 min. The initial temperature T0 refers to the temperature at the start of the oxygen regulation mode operation, and the range of the initial temperature T0 can be 2℃ to 8℃.

[0161] S20 compares the current temperature T1 of the oxygen-conditioned gas with the initial temperature T0 of the oxygen-conditioned gas.

[0162] S21 When T1-T0≥a℃, the refrigeration system is controlled according to the refrigeration status of the refrigerator to cool the oxygen-conditioned gas in the oxygen-conditioned gas circuit 42.

[0163] S22 If T1 - T0 < a℃, then continue to compare the current temperature T1 and the initial temperature T0 of the oxygen-conditioned gas.

[0164] This design allows the temperature of the oxygen-controlled gas to quickly drop to the preset temperature range, thus preventing the gas from affecting the preservation temperature within the oxygen-controlled chamber. Since the oxygen-controlled chamber has a certain amount of space, it would take some time for the oxygen-controlled gas to affect its temperature. Therefore, compared to directly detecting the temperature inside the oxygen-controlled chamber and then controlling the refrigeration system accordingly, this invention can quickly adjust the temperature of the oxygen-controlled gas, reducing the impact of the higher-temperature gas on the temperature within the chamber. This ensures that the food is stored at a suitable temperature, resulting in better preservation.

[0165] Where a is a constant greater than 0, and further, a≥3℃. When the difference between the current temperature T1 and the initial temperature T0 of the oxygen-controlled gas is small, the oxygen-controlled gas will mix with the air in the oxygen-controlled room after being added, and the preservation temperature in the room will be balanced accordingly. Therefore, it will not cause large fluctuations in the temperature in the oxygen-controlled room.

[0166] "Controlling the refrigeration system according to the refrigerator's cooling status" specifically includes:

[0167] S30 determines whether the refrigeration system is in refrigeration mode by checking whether the refrigeration damper between the supply air duct 31 and the main air duct is open, and whether the refrigeration fan in the supply air duct 31 is running. The refrigeration system is determined to be in refrigeration mode only if both the refrigeration damper and the refrigeration fan are open. There is no specific order in which the refrigeration damper and the refrigeration fan are identified.

[0168] If the refrigeration system is in the refrigeration state, S31 controls whether the refrigeration airflow enters the oxygen conditioning room according to the refrigeration state of the oxygen conditioning room, that is, it determines whether the room damper is open to transmit the refrigeration airflow to the oxygen conditioning room.

[0169] If the compartment damper is in the open state, the temperature T2 of the oxygen conditioning compartment is compared with the temperature T3 of the shutdown node, and the operating state of the compartment damper is controlled according to the difference between the temperature T2 of the oxygen conditioning compartment and the temperature T3 of the shutdown node.

[0170] The temperature T2 of the oxygen conditioning chamber can be obtained through the second temperature sensor, and the temperature T3 of the shutdown node is the preset temperature threshold in the oxygen conditioning chamber, which can be 2℃~8℃.

[0171] When the temperature T2 in any oxygen-controlled chamber is less than the temperature T3 at the shutdown point, the compressor is switched to the shutdown state or the refrigeration state, and the refrigeration circulation module is stopped, that is, the refrigeration damper and refrigeration fan are closed, and the chamber damper is closed at the same time.

[0172] S312 If the compartment damper is not open, the compartment damper will be opened when the temperature T2 of the oxygen conditioning compartment is within the third threshold range, and the compartment damper and the refrigeration damper will be closed when the temperature T2 of the oxygen conditioning compartment is less than the temperature T3 of the shutdown node.

[0173] The third threshold range is: T2≥T3+b℃. When T2≥T3+b℃, the compartment damper is opened; when T2<T3+b℃, the compartment damper is kept closed.

[0174] Where b is a constant greater than 0, and the range of b is 0.5℃ to 3℃. As an example, b can be 2℃.

[0175] After opening the compartment damper, the oxygen-regulating compartment is cooled normally. When the temperature T2 in any oxygen-regulating compartment is lower than the temperature T3 at the shutdown point, the compressor is switched to the shutdown state or the refrigeration state, and the refrigeration circulation module is stopped, that is, the refrigeration damper and refrigeration fan are closed, and the compartment damper is closed at the same time.

[0176] If the refrigeration system is not in refrigeration mode, S32 determines the temperature T2 of the oxygen conditioning chamber. If the temperature T2 is within the first threshold range, the chamber damper is opened; if the temperature T2 is within the second threshold range, the refrigeration system is switched to refrigeration mode. Furthermore, the temperature T2 of the oxygen conditioning chamber is compared with the temperature T3 of the shutdown point, and the operating status of the refrigeration system is controlled based on the relative values ​​of these two temperatures.

[0177] The first threshold range of S321 is: T3≤T2<T3+b℃.

[0178] That is, when T3≤T2<T3+b℃, the air door between the oxygen-regulating chamber and the refrigeration system is opened, that is, the chamber air door is opened, and the refrigeration fan operates at the duty cycle of the set threshold P.

[0179] Where P is a percentage value greater than 0, 50% ≤ P ≤ 75%, and the specific value of P can be determined based on the current temperature T2 of the oxygen-controlled room. As an example, when T3 ≤ T2 < T3 + 0.5℃, the refrigeration fan operates at a 50% duty cycle, and when T3 + 0.5℃ < T2 < T3 + 1℃, the refrigeration fan operates at a 75% duty cycle.

[0180] The second threshold range for S322 is: T2≥T3+b℃.

[0181] That is, when T2≥T3+b℃, the operating status of the compressor is determined, and its operating status is switched according to the operating status of the compressor.

[0182] If the compressor is in a stopped state, S3221 controls the start of the refrigeration state and controls the refrigeration damper to be in the open state.

[0183] If the compressor is in refrigeration mode, S3222 will switch to refrigeration mode after the refrigeration mode operation ends and control the refrigeration damper to be in the open state.

[0184] The present invention also proposes an electronic device, which includes a storage module and a processing module. When the processing module executes the computer program, it can implement the steps in the above-mentioned refrigerator temperature regulation method, that is, implement the steps in any of the above-mentioned refrigerator temperature regulation methods.

[0185] The electronic device can be integrated into the refrigerator, a local terminal device, or part of a cloud server.

[0186] 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 refrigerator, connecting all parts of the refrigerator through various interfaces and lines.

[0187] The storage module can be used to store the computer programs and / or modules. The processing module implements various functions of the refrigerator 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, memory, 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.

[0188] 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 refrigerator.

[0189] Furthermore, 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 above-described refrigerator temperature regulation method, that is, implement the steps in any of the technical solutions of the above-described refrigerator temperature regulation method.

[0190] If the integrated module of the refrigerator temperature regulation method 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.

[0191] 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 or removed 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.

[0192] The above description, based on the embodiments shown in the figures, details the structure, features, and effects of the present invention. The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the figures. Any changes made in accordance with the concept of the present invention, or equivalent embodiments modified to have equivalent changes, that do not exceed the spirit covered by the specification and figures, should be within the protection scope of the present invention.

Claims

A refrigerator, characterized in that, include: The housing has several storage compartments inside and a refrigeration duct for circulating refrigeration airflow to provide cooling capacity to at least one of the storage compartments; An oxygen conditioning assembly includes an oxygen conditioning module for preparing oxygen-conditioned gas and an oxygen conditioning path for supplying the oxygen-conditioned gas to at least one of the storage chambers. The cooling duct is coupled to at least a portion of the oxygen conditioning circuit to provide cooling to the oxygen conditioning circuit. The refrigerator according to claim 1, characterized in that: The cooling air duct includes a cooling air duct that at least partially surrounds the storage room and an air supply duct for providing cooling airflow to the cooling air duct. The cooling air duct has an air inlet and a return air inlet connected to the supply air duct. The cooling airflow flows through the air inlet, through the cooling air duct, and then through the return air inlet to the supply air duct to form a return air path. At least part of the oxygen conditioning path is coupled to the return air path. The refrigerator according to claim 2 is characterized in that: At least part of the oxygen conditioning circuit is located at the return air inlet. The refrigerator according to claim 1 or 2 is characterized in that: At least a portion of the oxygen conditioning circuit is coiled within the cooling air duct. The refrigerator according to claim 1 or 2 is characterized in that: At least a portion of the oxygen conditioning circuit is wrapped around the outside of the cooling air duct to exchange heat with the cooling air duct. The refrigerator according to claim 2, characterized in that, The refrigerator also includes: A storage container that internally defines the storage chamber; A sealing housing is provided on the outside of at least a portion of the wall of the storage container, and a gap is provided between the sealing housing and the storage container to allow the flow of the cooling gas or the oxygen regulating gas. The refrigerator according to claim 6 is characterized in that, The storage container includes: The cover plate is fixed in the sealed housing; A drawer having an upward-opening cavity, the drawer sliding against the sealing housing to move between an open position with the cavity open and a closed position with the cavity closed; The cover is located above the drawer to seal the cavity in the closed position. The refrigerator according to claim 6 or 7 is characterized in that: The gap forms the cooling air duct, and the air inlet and return air outlet are located on the sealed housing. The refrigerator according to claim 7 is characterized in that: The oxygen regulating circuit is connected to the gap, and the cover plate has an air inlet for circulating the oxygen regulating gas to the storage chamber. The air inlet and air return are located on the drawer. The refrigerator according to claim 9 is characterized in that: The cover plate is provided with a breathable membrane at the air inlet position for the oxygen-regulating gas to pass through. The refrigerator according to claim 1, characterized in that: The oxygen supply path is configured as an oxygen-enriched path to supply oxygen to the storage room; And / or, the oxygen conditioning path is configured as an oxygen-deficient path to provide oxygen-deficient gas to the storage room. The refrigerator according to claim 1, characterized in that: The oxygen regulating circuit is equipped with a first temperature sensor. The refrigerator according to claim 12 is characterized in that: The first temperature sensor is located at one end of the gas outlet of the oxygen regulating circuit that connects to the storage chamber. A method for controlling the temperature of a refrigerator, characterized in that, The temperature control method includes: In oxygen adjustment mode, the initial temperature T0 of the oxygen-adjusting gas and the current temperature T1 corresponding to the running time t in the oxygen adjustment mode are obtained respectively. The current temperature T1 of the oxygen-conditioned gas is compared with the initial temperature T0 of the oxygen-conditioned gas; when T1 - T0 ≥ a℃, the refrigeration system is controlled to cool the oxygen-conditioned gas according to the refrigeration state of the refrigerator; when T1 - T0 < a℃, the steps of obtaining the current temperature T1 and comparing the current temperature T1 with the initial temperature T0 are repeated; where t and a are constants greater than 0. The refrigerator temperature control method according to claim 14 is characterized in that, "Controlling the refrigerator's cooling system according to its cooling status" includes: Determine whether the refrigeration system is in a refrigeration state; If the refrigeration system is in a refrigeration state, the refrigeration airflow is controlled to enter the oxygen conditioning room according to the refrigeration state of the oxygen conditioning room. If the refrigeration system is not in the refrigeration state, the temperature T2 of the oxygen-regulating chamber is determined. If the temperature T2 of the oxygen-regulating chamber is within the first threshold range, the refrigeration airflow is controlled to enter the oxygen-regulating chamber. If the temperature T2 of the oxygen-regulating chamber is within the second threshold range, the refrigeration system is controlled to switch to the refrigeration state. The second threshold range is greater than the first threshold range. The refrigerator temperature control method according to claim 15 is characterized in that: Controlling whether the cooling airflow enters the oxygen conditioning room based on the cooling status of the oxygen conditioning room includes: If the oxygen conditioning chamber is in a refrigeration state, the supply of refrigeration airflow to the oxygen conditioning chamber will stop when the temperature T2 of the oxygen conditioning chamber is lower than the temperature T3 of the shutdown node when the refrigeration system stops operating in the refrigeration state. If the oxygen conditioning chamber is not in a cooling state, then when the temperature T2 of the oxygen conditioning chamber is within the third threshold range, the supply of cooling airflow to the oxygen conditioning chamber will be controlled until the temperature T2 of the oxygen conditioning chamber is less than the temperature T3 of the shutdown node, at which point the supply of cooling airflow to the oxygen conditioning chamber will stop. The refrigerator temperature control method according to claim 16 is characterized in that: The third threshold range is: T2≥T3+b℃, where b is a constant greater than 0. The refrigerator temperature control method according to claim 15 is characterized in that: The first threshold range is: T3≤T2<T3+b℃; the second threshold range is: T2≥T3+b℃; where b is a constant greater than 0. The refrigerator temperature control method according to claim 15 is characterized in that: Once the temperature T2 of the oxygen-controlled chamber is within the first threshold range, the system also includes controlling the opening of the refrigeration fan in the refrigeration system. The refrigerator temperature control method according to claim 19 is characterized in that: The refrigeration fan operates at a duty cycle with a set threshold.

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