Refrigerator

Abstract

The invention discloses a refrigerator which comprises a power supply module comprising an energy storage battery, a first switch unit, a second switch unit and a third switch unit, the first switch unit is connected with an electricity load and a power supply grid of the refrigerator, the second switch unit is connected with the energy storage battery and the power supply grid, and the third switch unit is connected with the energy storage battery. The third switch unit is respectively connected with the energy storage battery and an electricity load of the refrigerator; the main control module is used for controlling the first switch unit to be switched on and the third switch unit to be switched off when the power supply grid is powered on, and controlling the first switch unit to be switched off and the third switch unit to be switched on when the power supply grid is powered off; and the refrigeration module is used for providing cold energy for the first storage space and the second storage space when the power supply grid is powered on, and continuously providing cold energy for the second storage space, stopping providing cold energy for the first storage space or reducing cold energy provided for the first storage space when the power supply grid is powered off. By adopting the technical scheme, long-time and reliable emergency low-temperature storage can be realized.

Description

Technical Field

[0001] This invention relates to the field of refrigerator control technology, and more particularly to a refrigerator. Background Technology

[0002] Traditional household refrigerators rely entirely on mains power to operate. Once the mains power is interrupted, the refrigerator will stop working, and the temperature inside the refrigerator will gradually rise, causing stored food, medicine and other items to spoil and become unusable, resulting in losses for users.

[0003] While some refrigerators are equipped with energy storage batteries or uninterruptible power supplies (UPS), they typically power the entire refrigerator after a power outage. Due to the limited capacity of energy storage batteries or UPS systems, this mode of powering the entire refrigerator often only maintains cooling for a very short time, failing to achieve long-term, reliable emergency low-temperature storage, resulting in poor economic efficiency and practicality.

[0004] Therefore, there is an urgent need for a smart and efficient solution for refrigerators that can significantly extend the low-temperature storage time of critical items when the mains power is interrupted. Summary of the Invention

[0005] This invention provides a refrigerator to solve the problem that traditional refrigerators cannot achieve long-term, reliable emergency low-temperature storage during power outages.

[0006] According to the present invention, a refrigerator is provided, comprising a power supply module, a refrigeration module, a cooling module, and a main control module;

[0007] The power supply module includes an energy storage battery, a first switch unit, a second switch unit, and a third switch unit; the refrigerator's electrical load is electrically connected to the power grid through the first switch unit; the energy storage battery is electrically connected to the power grid through the second switch unit; the energy storage battery is also electrically connected to the refrigerator's electrical load through the third switch unit.

[0008] The refrigeration module includes a first storage space and a second storage space;

[0009] The refrigeration module is suitable for providing cooling energy to the first storage space and the second storage space;

[0010] The main control module is electrically connected to the first switch unit, the second switch unit, the third switch unit, and the refrigeration module, respectively.

[0011] The main control module is configured to control the first switch unit to be turned on and the third switch unit to be turned off when the power grid is energized, and to control the first switch unit to be turned off and the third switch unit to be turned on when the power grid is de-energized.

[0012] The cooling module is configured to provide cooling energy to the first storage space and the second storage space when the power grid is powered, and to continue providing cooling energy to the second storage space and stop providing cooling energy to the first storage space or reduce the amount of cooling energy provided to the first storage space when the power grid is powered off.

[0013] Optionally, the main control module is further configured to control the second switch to turn on when the power grid is energized and the energy storage battery has a charge level less than a preset charge level threshold, and to control the second switch to turn off when the power grid is de-energized and / or the energy storage battery has a charge level greater than or equal to the preset charge level threshold.

[0014] Optionally, the main control module includes a main control unit and a backup power supply; the main control unit is electrically connected to the first switch unit, the second switch unit, the third switch unit, the cooling module, and the backup power supply respectively; the backup power supply is also electrically connected to the energy storage battery and / or the power grid.

[0015] Optionally, the refrigerator further includes a first voltage sensor; the first voltage sensor is configured to detect the voltage of the power grid.

[0016] The main control module is also configured to receive the voltage of the power grid detected by the first voltage sensor, and determine that the power grid is energized when the voltage of the power grid is greater than or equal to a preset voltage threshold and the duration is greater than or equal to a preset time threshold, and determine that the power grid is de-energized when the voltage of the power grid is less than the preset voltage threshold and the duration is greater than or equal to the preset time threshold.

[0017] Optionally, the refrigerator further includes a first temperature sensor; the first temperature sensor is configured to detect the temperature of the second storage space;

[0018] The main control module is also configured to receive the temperature of the second storage space detected by the first temperature sensor when the power grid is cut off, and to control the cooling module to provide cooling energy to the second storage space when the temperature of the second storage space is greater than a preset temperature threshold, and to control the cooling module to stop providing cooling energy to the second storage space when the temperature of the second storage space is less than or equal to the preset temperature threshold.

[0019] Optionally, the refrigeration module includes a first compressor, a first condenser, a first pipeline switch, a first regulating and purifying unit, a first evaporator, a second regulating and purifying unit, and a second evaporator;

[0020] The first compressor, the first condenser, the first pipeline switch, the first regulating and purifying unit, and the first evaporator constitute the first refrigerant circulation loop;

[0021] The first compressor, the first condenser, the second regulating and purifying unit, and the second evaporator constitute the second refrigerant circulation loop;

[0022] Wherein, the first evaporator is adapted to cool the first storage space; the second evaporator is adapted to cool the second storage space;

[0023] The main control module is also configured to control the first pipeline switch to be turned on when the power grid is energized, so that both the first refrigerant circulation loop and the second refrigerant circulation loop can work normally.

[0024] The main control module is also configured to control the first pipeline switch to turn off or reduce the flow when the power grid fails, so that the first refrigerant circulation loop stops providing cooling energy to the first storage space or reduces the cooling energy provided to the first storage space.

[0025] Optionally, the refrigeration module includes a first compressor, a first condenser, a three-way diverter valve, a first regulating and purifying unit, a first evaporator, a second regulating and purifying unit, and a second evaporator;

[0026] The first compressor, the first condenser, the three-way diverter valve, the first regulating and purifying unit, and the first evaporator constitute the first refrigerant circulation loop;

[0027] The first compressor, the first condenser, the three-way diverter valve, the second regulating and purifying unit, and the second evaporator constitute the second refrigerant circulation loop;

[0028] Wherein, the first evaporator is adapted to cool the first storage space; the second evaporator is adapted to cool the second storage space;

[0029] The main control module is also configured to control all three ports of the three-way diverter valve to be open when the power grid is energized, so that both the first refrigerant circulation loop and the second refrigerant circulation loop can operate normally.

[0030] The main control module is also configured to, when the power grid fails, control the port connected to the first regulating and purifying unit in the three-way diverter valve to close or reduce the flow, so that the first refrigerant circulation loop stops providing cooling energy to the first storage space or reduces the cooling energy provided to the first storage space.

[0031] Optionally, the refrigeration module includes a first compressor, a first pipeline switch, a first condenser, a first regulating and purifying unit, a first evaporator, a second condenser, a second regulating and purifying unit, and a second evaporator;

[0032] The first compressor, the first pipeline switch, the first condenser, the first regulating and purifying unit, and the first evaporator constitute the first refrigerant circulation loop;

[0033] The first compressor, the second condenser, the second regulating and purifying unit, and the second evaporator constitute the second refrigerant circulation loop;

[0034] Wherein, the first evaporator is adapted to cool the first storage space; the second evaporator is adapted to cool the second storage space;

[0035] The main control module is also configured to control the first pipeline switch to be turned on when the power grid is energized, so that both the first refrigerant circulation loop and the second refrigerant circulation loop can work normally.

[0036] The main control module is also configured to control the first pipeline switch to turn off or reduce the flow when the power grid fails, so that the first refrigerant circulation loop stops providing cooling energy to the first storage space or reduces the cooling energy provided to the first storage space.

[0037] Optionally, the refrigeration module includes a first compressor, a first condenser, a first regulating and purifying unit, a first evaporator, a second compressor, a second condenser, a second regulating and purifying unit, and a second evaporator;

[0038] The first compressor, the first condenser, the first regulating and purifying unit, and the first evaporator constitute the first refrigerant circulation loop;

[0039] The second compressor, the second condenser, the second regulating and purifying unit, and the second evaporator constitute the second refrigerant circulation loop;

[0040] Wherein, the first evaporator is adapted to cool the first storage space; the second evaporator is adapted to cool the second storage space;

[0041] The main control module is also configured to control both the first refrigerant circulation loop and the second refrigerant circulation loop to work normally when the power grid is powered, and to control the first refrigerant circulation loop to stop working when the power grid is de-energized.

[0042] Optionally, the refrigeration module includes a first compressor, a first condenser, a first regulating and purifying unit, a first evaporator, a second evaporator, a second compressor, a second condenser, a second regulating and purifying unit, and a third evaporator;

[0043] The first compressor, the first condenser, the first regulating and purifying unit, the first evaporator, and the second evaporator constitute the first refrigerant circulation loop;

[0044] The second compressor, the second condenser, the second regulating and purifying unit, and the third evaporator constitute the second refrigerant circulation loop;

[0045] Wherein, the first evaporator is adapted to cool the first storage space; the second evaporator and the third evaporator are adapted to cool the second storage space;

[0046] The main control module is also configured to control the first refrigerant circulation loop to operate normally when the power grid is powered, and to control the second refrigerant circulation loop to operate normally when the power grid is de-energized.

[0047] The technical solution of this invention, by setting up a main control module and a power supply module, can automatically switch the energy storage battery to supply power to the refrigerator's electrical load when the power grid fails. The entire process is fully automatic and requires no intervention, effectively ensuring the safety of items stored in the second storage space and improving the refrigerator's intelligence and reliability. Furthermore, by setting up a refrigeration module, when the power grid fails, it stops or reduces the supply of cooling energy to the first storage space, enabling zoned control of cooling energy according to different storage spaces. During a power outage, it prioritizes supplying cooling energy to the second storage space, greatly reducing the refrigerator's energy consumption and significantly extending the low-temperature storage time in the second storage space, thus extending the limited... The energy storage battery can sustain the second storage space for several days or even longer, solving the problem of traditional refrigerators with energy storage batteries having short battery life and being unable to achieve long-term, reliable emergency low-temperature storage when the power grid fails. In addition, by controlling the cooling energy supplied to the first and second storage spaces in separate zones, an "emergency zone" can be clearly defined. This allows users to rationally divide the storage space according to factors such as the temperature sensitivity of the items, the importance of continuous refrigeration, and the duration that the items can tolerate being stored at room temperature. In this way, users no longer need to worry about food and medicine being damaged due to power grid failures, greatly improving the safety of item preservation and enhancing user security and satisfaction.

[0048] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0050] Figure 1 This is a schematic diagram of the structure of a refrigerator provided in an embodiment of the present invention;

[0051] Figure 2 This is a schematic diagram of the structure of a refrigeration module provided in an embodiment of the present invention. Figure 1 ;

[0052] Figure 3 This is a schematic diagram of the structure of a refrigeration module provided in an embodiment of the present invention. Figure 2 ;

[0053] Figure 4 This is a schematic diagram of the structure of a refrigeration module provided in an embodiment of the present invention. Figure 3 ;

[0054] Figure 5 This is a schematic diagram of the structure of a refrigeration module provided in an embodiment of the present invention. Figure 4 ;

[0055] Figure 6 This is a schematic diagram of the structure of a refrigeration module provided in an embodiment of the present invention. Figure 5 . Detailed Implementation

[0056] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0057] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0058] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention. The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0059] It should be noted that the implementation methods provided in the embodiments of the present invention can be combined with each other without contradiction.

[0060] Figure 1 This is a schematic diagram of the structure of a refrigerator provided in an embodiment of the present invention, for reference. Figure 1 The refrigerator includes a power supply module 10, a refrigeration module 20, a cooling module 30, and a main control module 40. The power supply module 10 includes an energy storage battery 11, a first switch unit S01, a second switch unit S02, and a third switch unit S03. The refrigerator's electrical load is electrically connected to the power grid through the first switch unit S01, the energy storage battery 11 is electrically connected to the power grid through the second switch unit S02, and the energy storage battery 11 is also electrically connected to the refrigerator's electrical load through the third switch unit S03. The refrigeration module 20 includes a first storage space 21 and a second storage space 22. The cooling module 30 is used to provide cooling energy to the first storage space 21 and the second storage space 22. The main control module 40 is electrically connected to the first switch unit S01, the second switch unit S02, the third switch unit S03, and the cooling module 30.

[0061] The main control module 40 is configured to control the first switch unit S01 to turn on and the third switch unit S03 to turn off when the power grid is energized, and to control the first switch unit S01 to turn off and the third switch unit S03 to turn on when the power grid is de-energized. The cooling module 30 is configured to provide cooling energy to the first storage space 21 and the second storage space 22 when the power grid is energized, and to continue providing cooling energy to the second storage space 22 and stop providing cooling energy to the first storage space 21 or reduce the amount of cooling energy provided to the first storage space 21 when the power grid is de-energized.

[0062] The power supply module 10 is connected between the power grid and the refrigerator's electrical load. The power supply module 10 is used to receive, convert, distribute, and protect the load from external power. It is a structural component that provides the necessary power to the refrigerator's electrical load. The external power source includes the power grid, which may include, but is not limited to, 220V AC mains power or a small power station network. The refrigerator's electrical load includes, but is not limited to, the refrigerator's refrigeration module 30, and may also include components such as the refrigerator's display module and lighting module. In one embodiment, the power supply module 10 can be integrated with the refrigerator's body; for example, it can be located inside the refrigerator's body. In another embodiment, the power supply module 10 can be detachably connected to the refrigerator's body; for example, it can be connected via plug-in connection, snap-fit ​​connection, magnetic connection, or spring pressure connection.

[0063] The energy storage battery 11 in the power supply module 10 includes, but is not limited to, emergency energy storage batteries, UPS, and other energy storage devices. In one embodiment, the energy storage battery 11 can be integrated with the refrigerator body and can be located inside the refrigerator body, such as in the bottom space of the refrigerator or near the refrigeration module 30. In another embodiment, the energy storage battery 11 can also be located outside the refrigerator body. In this case, other structures in the power supply module 10 can also be located outside the refrigerator body, or other structures in the power supply module 10 can be located inside the refrigerator body. The energy storage battery 11 is detachably connected to the refrigerator body to achieve flexible installation and placement of the energy storage battery 11. In yet another embodiment, the rated capacity of the energy storage battery 11 can be 1 kWh, 2 kWh, 3 kWh, etc., sufficient to provide emergency power for several hours to tens of hours after a power outage.

[0064] The first switching unit S01 in the power supply module 10 is used to connect the power grid and the electrical load of the refrigerator, and is used to provide energy from the power grid to the electrical load of the refrigerator when the power grid is powered. The second switching unit S02 is used to connect the power grid and the energy storage battery 11, and is used to provide energy from the power grid to the energy storage battery 11 when the power grid is powered. The third switching unit S03 is used to connect the energy storage battery 11 and the electrical load of the refrigerator, and is used to provide energy from the energy storage battery 11 to the electrical load of the refrigerator when the power grid is de-energized. The first switching unit S01, the second switching unit S02, and the third switching unit S03 in the power supply module 10 include, but are not limited to, controllable switches such as relays, metal-oxide-semiconductor field-effect transistors (MOSFETs), and insulated-gate bipolar transistors (IGBTs).

[0065] The refrigeration module 20 includes at least a first storage space 21 and a second storage space 22. The first and second storage spaces 21 are independent of each other, with the second storage space 22 being more temperature-sensitive and requiring priority protection. In one embodiment, the first storage space 21 can be a regular refrigeration area for storing items that are not sensitive to temperature fluctuations and can withstand short periods of room temperature (such as beverages, condiments, and fruits). The second storage space 22 can be an emergency refrigeration area for storing valuable items that are sensitive to temperature and require continuous refrigeration (such as insulin, high-end skincare products, and fresh food). In another embodiment, the first storage space 21 can be a refrigeration area, where items stored there can last longer and are less prone to damage after refrigeration is stopped. The second storage space 22 can be a freezing area, where items stored there are more susceptible to damage after refrigeration is stopped due to the melting of ice crystals, even at lower temperatures than those in the refrigeration area.

[0066] The refrigeration module 30 is used to provide cooling energy to the first storage space 21 and the second storage space 22. In one embodiment, the refrigeration module 30 includes structural components such as a compressor, condenser, capillary tube, and evaporator, which are used to form a first refrigerant circulation loop and a second refrigerant circulation loop that provide cooling energy to the first storage space 21 and the second storage space 22, respectively. The first refrigerant circulation loop and the second refrigerant circulation loop may not operate simultaneously.

[0067] The main control module 40 is used to control, regulate, or monitor the operating status of other electrical equipment or systems. It can enable the controlled object to complete corresponding actions according to preset rules or instructions through specific logical operations, signal processing, or instruction transmission. The main control module 40 includes, but is not limited to, microcontroller units (MCUs) and programmable logic devices (PLDs).

[0068] For example, when the power grid is energized, the main control module 40 can control the first switch unit S01 and the second switch unit S02 to be turned on, and the third switch unit S03 to be turned off, using the power grid to supply power to the refrigerator's electrical load. At this time, the power grid can supply power to the structural components in the first refrigerant circulation loop and the structural components in the second refrigerant circulation loop of the refrigeration module 30. Both the first and second refrigerant circulation loops are working normally, so that the refrigeration module 30 can simultaneously provide cooling energy to the first storage space 21 and the second storage space 22, and the first storage space 21 and the second storage space 22 can maintain their respective set temperatures.

[0069] When the power grid fails, the main control module can control the first switch unit S01 and the second switch unit S02 to turn off and the third switch unit S03 to turn on, using the energy storage battery 11 to supply power to the refrigerator's electrical load. At this time, the energy storage battery 11 can supply power to the structural components in the second refrigerant circulation loop of the refrigeration module 30, so that the refrigeration module 30 can continue to provide cooling energy to the second storage space 22, and the items stored in the second storage space 22 are not easily damaged.

[0070] In one embodiment, when the power grid fails, the energy storage battery 11 may not supply power to the structural components in the first refrigerant circulation loop, and the first refrigerant circulation loop will stop working, so that the refrigeration module 30 will stop providing cold energy to the first storage space 21, so as to make use of the limited energy storage capacity to prioritize the low temperature environment in the second storage space 22 and extend the low temperature storage time of critical items.

[0071] In another embodiment, when the power grid fails, the energy storage battery 11 can supply power to the structural components in the first refrigerant circulation loop, allowing the first refrigerant circulation loop to continue operating. This enables the refrigeration module 30 to continue providing cooling energy to the first storage space 21. At the same time, the main control module 40 can control the structural components in the refrigeration module 30, reducing the amount of cooling energy supplied by the refrigeration module 30 to the second storage space 22. It can also utilize the limited energy storage capacity to prioritize the low-temperature environment in the second storage space 22, extending the low-temperature storage time of critical items. Furthermore, it can also take into account the low-temperature environment of the first storage space 21, reducing damage to the items in the first storage space 21.

[0072] When the power grid is restored from a power outage state to a power-on state, the main control module 40 can control the first switch unit S01 and the second switch unit S02 to be turned on and the third switch unit S03 to be turned off, so that the power grid continues to supply power to the refrigerator's electrical load, and the first storage space 21 and the second storage space 22 can maintain their respective set temperature ranges.

[0073] In this embodiment of the invention, by setting up a main control module and a power supply module, the energy storage battery can automatically switch to supply power to the refrigerator's electrical load when the power grid fails. The entire process is fully automatic and requires no intervention, effectively ensuring the safety of items stored in the second storage space and improving the refrigerator's intelligence and reliability. Furthermore, by setting up a refrigeration module to stop or reduce the supply of cooling energy to the first storage space when the power grid fails, the invention enables zoned control of cooling energy according to different storage spaces. During a power outage, it prioritizes supplying cooling energy to the second storage space, significantly reducing the refrigerator's energy consumption and substantially extending the low-temperature storage time in the second storage space, thus maximizing the use of limited storage space. The battery power can sustain the second storage space for several days or even longer, solving the problem of traditional refrigerators with storage batteries having short battery life and being unable to achieve long-term, reliable emergency low-temperature storage when the power grid fails. In addition, by controlling the cooling energy supplied to the first and second storage spaces in separate zones, an "emergency zone" can be clearly defined. This allows users to rationally divide the storage space according to factors such as the temperature sensitivity of the items, the importance of continuous refrigeration, and the duration that the items can tolerate being stored at room temperature. In this way, users no longer need to worry about food and medicine being damaged due to power grid failures, greatly improving the safety of item preservation and enhancing user security and satisfaction.

[0074] In an optional embodiment, the main control module 40 is further configured to control the second switch unit S02 to turn on when the power grid is energized and the energy storage battery 11 has a charge level less than a preset charge level threshold, and to control the second switch unit S02 to turn off when the power grid is de-energized and / or the energy storage battery 11 has a charge level greater than or equal to the preset charge level threshold.

[0075] The preset power threshold can be set by the user or engineer. In one embodiment, the preset power threshold can be 80%, 90%, 100% of the rated capacity of the energy storage battery 11, etc.

[0076] For example, taking a preset power threshold of 100% of the rated capacity of the energy storage battery 11 as an example, when the power grid is energized, the main control module 40 can control the second switching unit S02 to conduct, using the power grid to charge the energy storage battery 11; the energy storage battery 11 may be equipped with a battery management circuit ( Figure 1(Not shown in the image) The battery management circuit can detect the power information of the energy storage battery 11; the main control module 40 can receive the power information of the energy storage battery 11, and after the energy storage battery 11 is fully charged, the main control module 40 controls the second switch unit S02 to turn off. In this way, the energy storage battery 11 can be prevented from being damaged by charging for a long time.

[0077] In another alternative embodiment, reference continues... Figure 1 The main control module 40 includes a main control unit 41 and a backup power supply 42. The main control unit 41 is electrically connected to the first switch unit S01, the second switch unit S02, the third switch unit S03, the cooling module 30, and the backup power supply 42, respectively. The backup power supply 42 is also electrically connected to the energy storage battery 11 and / or the power grid.

[0078] The main control unit 41 includes, but is not limited to, MCU, PLD, etc. The backup power supply 42 can be understood as a power source that can provide a stable and matched power supply to electronic devices, and can also store energy. In one embodiment, the backup power supply 42 includes a battery.

[0079] Specifically, the backup power supply 42 is electrically connected to the energy storage battery 11 and / or the power grid. When the power grid is powered, the backup power supply 42 can be powered by the power grid. When the power grid is de-energized, the backup power supply 42 can be powered by the energy storage battery 11. The backup power supply 42 can convert the electrical signals of the power grid or the energy storage battery 11 into electrical signals suitable for the main control unit 41 and provide them to the main control unit 41.

[0080] In another optional embodiment, the refrigerator further includes a first voltage sensor 50; the first voltage sensor 50 is configured to detect the voltage of the power grid. The main control module 40 is also configured to receive the voltage of the power grid detected by the first voltage sensor 50, and to determine that the power grid is energized when the voltage of the power grid is greater than or equal to a preset voltage threshold and the duration is greater than or equal to a preset time threshold, and to determine that the power grid is de-energized when the voltage of the power grid is less than the preset voltage threshold and the duration is greater than or equal to the preset time threshold.

[0081] For example, the first voltage sensor 50 can be set in the power supply module 10 (not shown in the figure), for example, it can be set between the power grid and the first switching unit S01, for real-time detection of the voltage input to the power grid; the main control module 40 is used to receive the voltage detected by the first voltage sensor 50 and determine whether the power grid has power. At the same time, by combining the duration of the voltage input to the power grid, false judgments caused by voltage pulses can be avoided, thereby intelligently controlling the switching of the power supply module 10 and the distribution of cold energy in the cooling module 30.

[0082] In another alternative embodiment, the refrigerator further includes a first temperature sensor 60 configured to detect the temperature of the second storage compartment 22. The main control module 40 is also configured to receive the temperature of the second storage compartment 22 detected by the first temperature sensor 60 when the power grid is interrupted, and to control the refrigeration module 30 to provide cooling energy to the second storage compartment 22 when the temperature of the second storage compartment 22 is greater than a preset temperature threshold, and to control the refrigeration module 30 to stop providing cooling energy to the second storage compartment 22 when the temperature of the second storage compartment 22 is less than or equal to the preset temperature threshold.

[0083] The preset temperature threshold can be set by the user or engineer. In one embodiment, the preset temperature threshold is equal to the set temperature maintained by the second storage space 22 when the power grid is energized.

[0084] For example, the first temperature sensor 60 can be installed in the second storage space 22 (not shown in the figure). The main control module 40 can continuously detect the temperature in the second storage space 22 through the first temperature sensor 60. When the power grid fails, the main control module 40 will activate the relevant structural components to cool the second storage space 22 only when the temperature in the second storage space 22 is higher than a preset temperature threshold, and control the cooling module 30 to provide cooling energy to the second storage space 22. In this way, the cooling module 30 can be controlled to work intermittently, so as to further reduce the energy consumption of the refrigerator's electrical load and extend the low-temperature storage time when the power grid fails.

[0085] Optional, Figure 2 This is a schematic diagram of the structure of a refrigeration module provided in an embodiment of the present invention. Figure 1 ,refer to Figure 2 The refrigeration module 30 includes a first compressor 311, a first condenser 312, a first pipeline switch Y01, a first regulating and purifying unit 313, a first evaporator 301, a second regulating and purifying unit 323, and a second evaporator 302. The first compressor 311, the first condenser 312, the first pipeline switch Y01, the first regulating and purifying unit 313, and the first evaporator 301 constitute a first refrigerant circulation loop; the first compressor 311, the first condenser 312, the second regulating and purifying unit 323, and the second evaporator 302 constitute a second refrigerant circulation loop. The first evaporator 301 is used to cool the first storage space 21, and the second evaporator 302 is used to cool the second storage space 22. The main control module 40 is also configured to control the first pipeline switch Y01 to conduct when the power grid is energized, so that both the first refrigerant circulation loop and the second refrigerant circulation loop can operate normally; the main control module 40 is also configured to control the first pipeline switch Y01 to turn off or reduce the flow when the power grid is de-energized, so that the first refrigerant circulation loop stops providing cooling energy to the first storage space 21 or reduces the cooling energy provided to the first storage space 21.

[0086] The first compressor 311 is used to compress gaseous refrigerant. The first condenser 312 is used to cool and condense the high-temperature, high-pressure gaseous refrigerant discharged from the first compressor 311 into a medium-high temperature, high-pressure liquid refrigerant, and release heat from the system. The first pipeline switch Y01 is used to control the refrigerant flow through the first regulating and purifying unit 313 and the first evaporator 301. The first pipeline switch Y01 includes, but is not limited to, a solenoid valve and an electronic expansion valve. The first regulating and purifying unit 313 and the second regulating and purifying unit 323 are used to regulate parameters such as refrigerant flow, pressure, and temperature. They can also be used to purify the refrigerant and filter harmful impurities. In one embodiment, the first regulating and purifying unit 313 and the second regulating and purifying unit 323 are used to throttle and reduce pressure, converting the high-pressure liquid refrigerant into a low-pressure gas-liquid mixture, which is beneficial for the efficient operation of the refrigerant circulation loop. In another embodiment, the first regulating and purifying unit 313 and the second regulating and purifying unit 323 may include a capillary tube and a dryer filter (not shown in the figure). The first evaporator 301 is used to cool the first storage space 21 when the refrigerant flows through the first evaporator 301, and the second evaporator 302 is used to cool the second storage space 22 when the refrigerant flows through the second evaporator 302.

[0087] For example, the first compressor 311, the first condenser 312, the first pipeline switch Y01, the first regulating and purifying unit 313, and the first evaporator 301 are connected in sequence to form a first refrigerant circulation loop; the second regulating and purifying unit 323 and the second evaporator 302 are connected in parallel with the first pipeline switch Y01, the first regulating and purifying unit 313, and the first evaporator 301, and the first compressor 311, the first condenser 312, the second regulating and purifying unit 323, and the second evaporator 302 are connected in sequence to form a second refrigerant circulation loop; the arrows in the figure indicate the direction of refrigerant circulation.

[0088] The refrigeration module 30 includes a compressor (first compressor 311) and a condensing pipe (first condenser 312). The condensing pipe can be connected to the first evaporator 301 and the second evaporator 302 through the first regulating and purifying unit 313 and the second regulating and purifying unit 323, respectively. A first pipe switch Y01 is provided between the condensing pipe and the first regulating and purifying unit 313 to control the refrigerant flow in the first refrigerant circulation loop. When the power grid fails, the main control module 40 can control the first pipe switch Y01 to close or reduce, stopping or reducing the cooling of the first storage space 21 by the first evaporator 301. This significantly reduces the workload and energy consumption of the refrigerator, ensuring that the energy storage battery 11 can provide emergency cooling for a longer period of time for temperature-sensitive items that require continuous refrigeration. In an optional embodiment, the main control module 40 can control the frequency of the first compressor 311 to reduce the power of the first compressor 311, so that the power of the first compressor 311 matches the cooling energy provided by the refrigeration module 30.

[0089] Optional, Figure 3 This is a schematic diagram of the structure of a refrigeration module provided in an embodiment of the present invention. Figure 2 ,refer to Figure 3 The refrigeration module 30 includes a first compressor 311, a first condenser 312, a three-way diverter valve Y02, a first regulating and purifying unit 313, a first evaporator 301, a second regulating and purifying unit 323, and a second evaporator 302. The first compressor 311, the first condenser 312, the three-way diverter valve Y02, the first regulating and purifying unit 313, and the first evaporator 301 constitute a first refrigerant circulation loop; the first compressor 311, the first condenser 312, the three-way diverter valve Y02, the second regulating and purifying unit 323, and the second evaporator 302 constitute a second refrigerant circulation loop. The first evaporator 301 is used to refrigerate the first storage space 21, and the second evaporator 302 is used to refrigerate the second storage space 22. The main control module 40 is also configured to control all three ports of the three-way diverter valve Y02 to be open when the power grid is energized, so that the first refrigerant circulation loop and the second refrigerant circulation loop can operate normally. The main control module 40 is also configured to control the port of the three-way diverter valve Y02 connected to the first regulating and purifying unit 313 to be closed or the flow rate to be reduced when the power grid is de-energized, so that the first refrigerant circulation loop stops providing cooling energy to the first storage space 21 or reduces the cooling energy provided to the first storage space 21.

[0090] The three-way diverter valve Y02 is used for diversion control. The three-way diverter valve Y02 includes one inlet and two outlets. The inlet of the three-way diverter valve Y02 is connected to the first condenser 312, and the two outlets of the three-way diverter valve Y02 are electrically connected to the first regulating and purifying unit 313 and the second regulating and purifying unit 323, respectively. The similarities to the above embodiments will not be repeated; only the differences will be explained.

[0091] For example, the first compressor 311, the first condenser 312, the three-way diverter valve Y02, the first regulating and purifying unit 313, and the first evaporator 301 are connected in sequence to form a first refrigerant circulation loop; the second regulating and purifying unit 323 and the second evaporator 302 are connected in parallel with the first pipeline switch Y01, the first regulating and purifying unit 313, and the first evaporator 301, and the first compressor 311, the first condenser 312, the three-way diverter valve Y02, the second regulating and purifying unit 323, and the second evaporator 302 are connected in sequence to form a second refrigerant circulation loop; the arrows in the figure indicate the direction of refrigerant circulation.

[0092] The refrigeration module 30 includes a compressor (first compressor 311) and a condenser pipe (first condenser 312). The condenser pipe can be connected to the first evaporator 301 and the second evaporator 302 via a three-way diverter valve Y02. The three-way diverter valve Y02 can control the flow distribution to the first evaporator 301 and the second evaporator 302. When the power grid fails, the main control module 40 can control the outlet of the three-way diverter valve Y02 connected to the first regulating and purifying unit 313 to close or reduce, stopping or reducing the cooling of the first evaporator 301 to the first storage space 21. In this way, the workload and energy consumption of the refrigerator can be significantly reduced, ensuring that the energy storage battery 11 can provide emergency cooling for temperature-sensitive items that require continuous refrigeration for a longer period of time. When the power grid is active, the main control module 40 can control the three-way diverter valve Y02 to distribute the corresponding refrigerant flow according to the temperature settings of the first storage space 21 and the second storage space 22.

[0093] In an optional embodiment, the main control module 40 is further configured to, when the power grid is energized and all three ports of the three-way diverter valve Y02 are open, control the flow rate at the port connected to the first regulating and purifying unit 313 in the three-way diverter valve Y02 to be less than the flow rate at the port connected to the second regulating and purifying unit 323 in the three-way diverter valve Y02. This ensures that the refrigerant flow rate to the second evaporator 302 is greater than the refrigerant flow rate to the first evaporator 301, and that the cooling energy provided by the second refrigerant circulation loop to the second storage space 22 is greater than the cooling energy provided by the first refrigerant circulation loop to the first storage space 21. Thus, when the temperature of the second storage space 22 changes, the first refrigerant circulation loop can quickly adjust the temperature to the set temperature of the second storage space 22, which helps improve the temperature stability of the second storage space 22, reduces temperature fluctuations, and thus greatly enhances the safety of storing temperature-sensitive items that require continuous refrigeration.

[0094] In another optional embodiment, the rated power of the second evaporator 302 is greater than the rated power of the first evaporator 301, which can also make the cooling energy provided by the second refrigerant circulation loop to the second storage space 22 greater than the cooling energy provided by the first refrigerant circulation loop to the first storage space 21, which is beneficial to increase the temperature stability of the second storage space 22 and reduce temperature fluctuations.

[0095] Optional, Figure 4 This is a schematic diagram of the structure of a refrigeration module provided in an embodiment of the present invention. Figure 3 ,refer to Figure 4The refrigeration module 30 includes a first compressor 311, a first pipeline switch Y01, a first condenser 312, a first regulating and purifying unit 313, a first evaporator 301, a second condenser 322, a second regulating and purifying unit 323, and a second evaporator 302. The first compressor 311, the first pipeline switch Y01, the first condenser 312, the first regulating and purifying unit 313, and the first evaporator 301 constitute a first refrigerant circulation loop. The first compressor 311, the second condenser 322, the second regulating and purifying unit 323, and the second evaporator 302 are used to refrigerate the first storage space 21, and the second evaporator 302 is used to refrigerate the second storage space 22. The main control module 40 is also configured to control the first pipeline switch Y01 to conduct when the power grid is energized, so that both the first refrigerant circulation loop and the second refrigerant circulation loop can operate normally; the main control module 40 is also configured to control the first pipeline switch Y01 to turn off or reduce the flow when the power grid is de-energized, so that the first refrigerant circulation loop stops providing cooling energy to the first storage space 21 or reduces the cooling energy provided to the first storage space 21.

[0096] The second condenser 322 is also used to cool and condense the high-temperature, high-pressure gaseous refrigerant discharged from the first compressor 311 into a medium-high temperature, high-pressure liquid refrigerant, and release heat from the system. The first pipeline switch Y01 is used to control the flow rate through the first condenser 312, the first regulating and purifying unit 313, and the first evaporator 301. The first pipeline switch Y01 includes, but is not limited to, a solenoid valve, an electronic expansion valve, etc. The similarities to the above embodiments will not be repeated; only the differences will be described.

[0097] For example, the first compressor 311, the first pipeline switch Y01, the first condenser 312, the first regulating and purifying unit 313, and the first evaporator 301 are connected in sequence to form a first refrigerant circulation loop; the second condenser 322, the second regulating and purifying unit 323, and the second evaporator 302 are connected in parallel with the first pipeline switch Y01, the first condenser 312, the first regulating and purifying unit 313, and the first evaporator 301, and the first compressor 311, the second condenser 322, the second regulating and purifying unit 323, and the second evaporator 302 are connected in sequence to form a second refrigerant circulation loop; the arrows in the figure indicate the direction of refrigerant circulation.

[0098] The refrigeration module 30 includes a compressor (first compressor 311) and two condensing pipes (first condenser 312 and second condenser 322). It can be connected to the first evaporator 301 and the second evaporator 302 via different condensing pipes. A first pipe switch Y01 is installed on the condensing pipe connected to the first evaporator 30 to control the refrigerant flow in the first refrigerant circulation loop. When the power grid fails, the main control module 40 can control the first pipe switch Y01 to close, stopping the cooling of the first storage space 21 and prioritizing the cooling needs of the second storage space 22. This significantly reduces the workload and energy consumption of the refrigerator, ensuring that the energy storage battery 11 can provide longer-lasting emergency cooling for temperature-sensitive items requiring continuous refrigeration. When the power grid is restored, the main control module 40 can control the first pipe switch Y01 to open, activating the cooling of the first storage space 21.

[0099] In addition, the refrigeration module 30 includes two condenser lines, which can match the refrigerant flow rate in the first condenser 312 and the second condenser 322 with their respective rated flow rates, which helps to improve system conversion efficiency and safety.

[0100] Optional, Figure 5 This is a schematic diagram of the structure of a refrigeration module provided in an embodiment of the present invention. Figure 4 ,refer to Figure 5 The refrigeration module 30 includes a first compressor 311, a first condenser 312, a first regulating and purifying unit 313, a first evaporator 301, a second compressor 321, a second condenser 322, a second regulating and purifying unit 323, and a second evaporator 302. The first compressor 311, the first condenser 312, the first regulating and purifying unit 313, and the first evaporator 301 constitute a first refrigerant circulation loop; the second compressor 321, the second condenser 322, the second regulating and purifying unit 323, and the second evaporator 302 constitute a second refrigerant circulation loop. The first evaporator 301 is used to refrigerate the first storage space 21, and the second evaporator 302 is used to refrigerate the second storage space 22. The main control module 40 is also configured to control both the first and second refrigerant circulation loops to operate normally when the power grid is powered, and to control the first refrigerant circulation loop to stop operating when the power grid is de-energized.

[0101] The second compressor 321 is used to compress gaseous refrigerant. The second condenser 322 is used to cool and condense the high-temperature, high-pressure gaseous refrigerant discharged from the second compressor 321 into a medium-high temperature, high-pressure liquid refrigerant, and release heat from the system. The similarities to the above embodiments will not be repeated; only the differences will be explained.

[0102] For example, the first compressor 311, the first condenser 312, the first regulating and purifying unit 313, and the first evaporator 301 are connected in sequence to form a first refrigerant circulation loop; the second compressor 321, the second condenser 322, the second regulating and purifying unit 323, and the second evaporator 302 are connected in sequence to form a second refrigerant circulation loop; the arrows in the figure indicate the direction of refrigerant circulation.

[0103] The refrigeration module 30 includes two independent compressors (first compressor 311 and second compressor 321) and two corresponding condensing pipes (first condenser 312 and second condenser 322), which can be connected to the first evaporator 301 and the second evaporator 302 respectively through two independent refrigerant circulation pipes. In one embodiment, the first switching unit S01 can be electrically connected to the electrical load in the first refrigerant circulation loop and the electrical load in the second refrigerant circulation loop simultaneously; the energy storage battery 11 is connected only to the electrical load in the second refrigerant circulation loop through the third switching unit S03, and is not connected to the electrical load in the first refrigerant circulation loop. Thus, when the power grid is powered, it can provide conventional cooling power to the electrical loads in the first and second refrigerant circulation loops, enabling the first evaporator 301 to cool the first storage space 21 and the second evaporator 302 to cool the second storage space 22. When the power grid is de-energized, the energy storage battery 11 can only provide emergency cooling power to the electrical loads in the second refrigerant circulation loop, causing the first evaporator 301 to stop cooling the first storage space 21 and the second evaporator 302 to continue cooling the second storage space 22, thereby reducing energy consumption and extending the low-temperature storage time of the second storage space 22.

[0104] In addition, the refrigeration module 30 includes two independent compressors, which can match the refrigerant flow of the first compressor 311 and the second compressor 321 with their respective rated power, which is beneficial to improving system conversion efficiency and safety.

[0105] Optional, Figure 6 This is a schematic diagram of the structure of a refrigeration module provided in an embodiment of the present invention. Figure 5 ,refer to Figure 6The refrigeration module 30 includes a first compressor 311, a first condenser 312, a first regulating and purifying unit 313, a first evaporator 301, a second evaporator 302, a second compressor 321, a second condenser 322, a second regulating and purifying unit 323, and a third evaporator 303. The first compressor 311, first condenser 312, first regulating and purifying unit 313, first evaporator 301, and second evaporator 302 constitute a first refrigerant circulation loop; the second compressor 321, second condenser 322, second regulating and purifying unit 323, and third evaporator 303 constitute a second refrigerant circulation loop. The first evaporator 301 is used to cool the first storage space 21, and the second evaporator 302 and third evaporator 303 are used to cool the second storage space 22. The main control module 40 is also configured to control the first refrigerant circulation loop to operate normally when the power grid is powered, and to control the second refrigerant circulation loop to operate normally when the power grid is de-energized.

[0106] The third evaporator 303 is used to cool the second storage space 22 when the refrigerant flows through it. The similarities to the above embodiment will not be repeated; only the differences will be explained.

[0107] For example, the first compressor 311, the first condenser 312, the first regulating and purifying unit 313, the first evaporator 301, and the second evaporator 302 are connected in sequence to form a first refrigerant circulation loop; the second compressor 321, the second condenser 322, the second regulating and purifying unit 323, and the third evaporator 303 are connected in sequence to form a second refrigerant circulation loop; the arrows in the figure indicate the direction of refrigerant circulation.

[0108] The refrigeration module 30 includes two independent compressors (a first compressor 311 for normal operation under power conditions and a second compressor 321 for operation in emergency power outage conditions) and two corresponding condenser lines (a first condenser 312 and a second condenser 322). It can be used for normal refrigeration (simultaneously cooling the first storage space 21 and the second storage space 22) and emergency refrigeration (cooling only the second storage space 22) through two independent refrigerant circulation lines. In one embodiment, the first switching unit S01 can be electrically connected only to the electrical load in the first refrigerant circulation loop; the energy storage battery 11 is connected only to the electrical load in the second refrigerant circulation loop through the third switching unit S03. Thus, when the power grid is powered, it can provide conventional cooling power to the electrical loads in the first refrigerant circulation loop, enabling the first evaporator 301 to cool the first storage space 21 and the second evaporator 302 to cool the second storage space 22. At this time, only the first compressor 311 needs to be in operation, which helps reduce the energy consumption of conventional cooling. When the power grid is de-energized, the energy storage battery 11 can provide emergency cooling power only to the electrical loads in the second refrigerant circulation loop, causing the first evaporator 301 and the second evaporator 302 to stop cooling. The second evaporator 302 can then cool the second storage space 22. At this time, only the low-power second compressor 321 needs to be in operation, and the refrigeration module 30 only provides cooling energy to the second storage space 22, which helps to further reduce energy consumption and extend the low-temperature storage time of the second storage space 22.

[0109] Based on the above embodiments, the rated power of the second evaporator 302 is greater than that of the first evaporator 301, which allows the second evaporator 302 to provide more cooling energy to the second storage space 22 than the first evaporator 301 provides to the first storage space 21. This is beneficial for increasing the temperature stability of the second storage space 22, reducing temperature fluctuations, and improving the safety of storing temperature-sensitive items that require continuous refrigeration.

[0110] The embodiments provided by this invention offer various system architectures, including a single compressor (first compressor 311) with a single condensing pipe (first condenser 312) and matching pipe switch; a single compressor (first compressor 311) with dual condensing pipes (first condenser 312, second condenser 322) and matching pipe switch; dual compressors (first compressor 311, second compressor 321) with dual condensing pipes (first condenser 312, second condenser 322); and dual compressors (first compressor 311, second compressor 321) with dual condensing pipes (first condenser 312, second condenser 322) operating in a time-sharing manner. All of these architectures can prioritize providing cooling energy to the second storage space during power outages, reducing the refrigerator's energy consumption and significantly extending the low-temperature storage time of the second storage space. This solves the problem of traditional refrigerators with energy storage batteries having short battery life and being unable to achieve long-term, reliable emergency low-temperature storage when the power grid fails. Furthermore, suitable system architectures can be selected based on different product positioning and cost levels, facilitating flexible setup and matching of appropriate system architectures, optimizing resource investment, and enriching the product offerings.

[0111] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A refrigerator, characterized in that, include: Power supply module, refrigeration module, cooling module and main control module; The power supply module includes an energy storage battery, a first switch unit, a second switch unit, and a third switch unit; the refrigerator's electrical load is electrically connected to the power grid through the first switch unit; the energy storage battery is electrically connected to the power grid through the second switch unit; the energy storage battery is also electrically connected to the refrigerator's electrical load through the third switch unit. The refrigeration module includes a first storage space and a second storage space; The refrigeration module is suitable for providing cooling energy to the first storage space and the second storage space; The main control module is electrically connected to the first switch unit, the second switch unit, the third switch unit, and the refrigeration module, respectively. The main control module is configured to control the first switch unit to be turned on and the third switch unit to be turned off when the power grid is energized, and to control the first switch unit to be turned off and the third switch unit to be turned on when the power grid is de-energized. The cooling module is configured to provide cooling energy to the first storage space and the second storage space when the power grid is powered, and to continue providing cooling energy to the second storage space and stop providing cooling energy to the first storage space or reduce the amount of cooling energy provided to the first storage space when the power grid is powered off.

2. The refrigerator according to claim 1, characterized in that, The main control module is also configured to control the second switch to turn on when the power grid is energized and the energy storage battery has a charge level less than a preset charge level threshold, and to control the second switch to turn off when the power grid is de-energized and / or the energy storage battery has a charge level greater than or equal to the preset charge level threshold.

3. The refrigerator according to claim 1, characterized in that, The main control module includes a main control unit and a backup power supply; the main control unit is electrically connected to the first switch unit, the second switch unit, the third switch unit, the cooling module and the backup power supply respectively; the backup power supply is also electrically connected to the energy storage battery and / or the power grid.

4. The refrigerator according to claim 1, characterized in that, The refrigerator also includes a first voltage sensor; the first voltage sensor is configured to detect the voltage of the power grid. The main control module is also configured to receive the voltage of the power grid detected by the first voltage sensor, and determine that the power grid is energized when the voltage of the power grid is greater than or equal to a preset voltage threshold and the duration is greater than or equal to a preset time threshold, and determine that the power grid is de-energized when the voltage of the power grid is less than the preset voltage threshold and the duration is greater than or equal to the preset time threshold.

5. The refrigerator according to claim 1, characterized in that, The refrigerator also includes a first temperature sensor; the first temperature sensor is configured to detect the temperature of the second storage space; The main control module is also configured to receive the temperature of the second storage space detected by the first temperature sensor when the power grid is cut off, and to control the cooling module to provide cooling energy to the second storage space when the temperature of the second storage space is greater than a preset temperature threshold, and to control the cooling module to stop providing cooling energy to the second storage space when the temperature of the second storage space is less than or equal to the preset temperature threshold.

6. The refrigerator according to claim 1, characterized in that, The refrigeration module includes a first compressor, a first condenser, a first pipeline switch, a first regulating and purifying unit, a first evaporator, a second regulating and purifying unit, and a second evaporator; The first compressor, the first condenser, the first pipeline switch, the first regulating and purifying unit, and the first evaporator constitute the first refrigerant circulation loop; The first compressor, the first condenser, the second regulating and purifying unit, and the second evaporator constitute the second refrigerant circulation loop; Wherein, the first evaporator is adapted to cool the first storage space; the second evaporator is adapted to cool the second storage space; The main control module is also configured to control the first pipeline switch to be turned on when the power grid is energized, so that both the first refrigerant circulation loop and the second refrigerant circulation loop can work normally. The main control module is also configured to control the first pipeline switch to turn off or reduce the flow when the power grid fails, so that the first refrigerant circulation loop stops providing cooling energy to the first storage space or reduces the cooling energy provided to the first storage space.

7. The refrigerator according to claim 1, characterized in that, The refrigeration module includes a first compressor, a first condenser, a three-way diverter valve, a first regulating and purifying unit, a first evaporator, a second regulating and purifying unit, and a second evaporator; The first compressor, the first condenser, the three-way diverter valve, the first regulating and purifying unit, and the first evaporator constitute the first refrigerant circulation loop; The first compressor, the first condenser, the three-way diverter valve, the second regulating and purifying unit, and the second evaporator constitute the second refrigerant circulation loop; Wherein, the first evaporator is adapted to cool the first storage space; the second evaporator is adapted to cool the second storage space; The main control module is also configured to control all three ports of the three-way diverter valve to be open when the power grid is energized, so that both the first refrigerant circulation loop and the second refrigerant circulation loop can operate normally. The main control module is also configured to, when the power grid fails, control the port connected to the first regulating and purifying unit in the three-way diverter valve to close or reduce the flow, so that the first refrigerant circulation loop stops providing cooling energy to the first storage space or reduces the cooling energy provided to the first storage space.

8. The refrigerator according to claim 1, characterized in that, The refrigeration module includes a first compressor, a first pipeline switch, a first condenser, a first regulating and purifying unit, a first evaporator, a second condenser, a second regulating and purifying unit, and a second evaporator; The first compressor, the first pipeline switch, the first condenser, the first regulating and purifying unit, and the first evaporator constitute the first refrigerant circulation loop; The first compressor, the second condenser, the second regulating and purifying unit, and the second evaporator constitute the second refrigerant circulation loop; Wherein, the first evaporator is adapted to cool the first storage space; the second evaporator is adapted to cool the second storage space; The main control module is also configured to control the first pipeline switch to be turned on when the power grid is energized, so that both the first refrigerant circulation loop and the second refrigerant circulation loop can work normally. The main control module is also configured to control the first pipeline switch to turn off or reduce the flow when the power grid fails, so that the first refrigerant circulation loop stops providing cooling energy to the first storage space or reduces the cooling energy provided to the first storage space.

9. The refrigerator according to claim 1, characterized in that, The refrigeration module includes a first compressor, a first condenser, a first regulating and purifying unit, a first evaporator, a second compressor, a second condenser, a second regulating and purifying unit, and a second evaporator; The first compressor, the first condenser, the first regulating and purifying unit, and the first evaporator constitute the first refrigerant circulation loop; The second compressor, the second condenser, the second regulating and purifying unit, and the second evaporator constitute the second refrigerant circulation loop; Wherein, the first evaporator is adapted to cool the first storage space; the second evaporator is adapted to cool the second storage space; The main control module is also configured to control both the first refrigerant circulation loop and the second refrigerant circulation loop to work normally when the power grid is powered, and to control the first refrigerant circulation loop to stop working when the power grid is de-energized.

10. The refrigerator according to claim 1, characterized in that, The refrigeration module includes a first compressor, a first condenser, a first regulating and purifying unit, a first evaporator, a second evaporator, a second compressor, a second condenser, a second regulating and purifying unit, and a third evaporator; The first compressor, the first condenser, the first regulating and purifying unit, the first evaporator, and the second evaporator constitute the first refrigerant circulation loop; The second compressor, the second condenser, the second regulating and purifying unit, and the third evaporator constitute the second refrigerant circulation loop; Wherein, the first evaporator is adapted to cool the first storage space; the second evaporator and the third evaporator are adapted to cool the second storage space; The main control module is also configured to control the first refrigerant circulation loop to operate normally when the power grid is powered, and to control the second refrigerant circulation loop to operate normally when the power grid is de-energized.

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