Refrigerator control method and device, refrigerator and storage medium
By setting up multiple evaporators and expansion valves in parallel in the refrigerator, the refrigerant flow rate is adjusted according to the environment and load state, the problem of low energy efficiency of large-capacity refrigerators is solved, and efficient refrigeration and energy-saving effects are achieved.
Patent Information
- Application Number
- CN202510676972.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-23
- Publication Date
- 2025-08-08
AI Technical Summary
Due to the long evaporator of large-capacity refrigerators, they lead to large pressure and energy losses during the refrigerant flow, poor refrigeration effect, and traditional energy-saving methods are difficult to meet higher low-energy consumption requirements.
At least two evaporators arranged in parallel are adopted, each evaporator is connected in series with the expansion valve, and the refrigerant flow rate is adjusted through the expansion valve, combining the ambient temperature and the load state of the storage chamber, and controlling the opening of the evaporator to match the heat exchange requirements.
Improve the energy efficiency of the refrigeration system, reduce energy losses, ensure stable operation of the refrigeration system, and achieve precise temperature control and energy conservation and emission reduction.
Smart Images
Figure CN120444855A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of refrigerators, and in particular relates to a refrigerator control method, a refrigerator device, a refrigerator, and a storage medium. Background Art
[0002] Large-capacity refrigerators have become increasingly popular, especially in large households, due to their ample storage space, which allows them to store a wider variety of food items and meet diverse storage needs. However, large-capacity refrigerators require larger evaporators to meet the cooling requirements of food storage temperatures. However, the longer evaporator tubes in large evaporators result in greater pressure and energy losses during the refrigerant flow, resulting in poor cooling performance and negative energy savings.
[0003] Currently, manufacturers in the refrigeration industry are implementing energy-saving measures such as using high-efficiency variable-frequency compressors, high-efficiency heat exchangers, environmentally friendly refrigerants, thicker insulation, and double-door seals. However, traditional energy-saving measures often result in excessive costs. Furthermore, with the implementation of new energy efficiency standards and the continuous improvement of product energy-saving levels, traditional energy-saving measures are no longer able to meet the higher energy consumption requirements. Summary of the Invention
[0004] The embodiments of the present application provide a refrigerator control method, device, refrigerator, and storage medium, which can solve the technical problem of low energy efficiency in large-capacity refrigerators.
[0005] To achieve the above objectives, this application provides the following technical solutions:
[0006] A method for controlling a refrigerator, the refrigerator comprising a storage compartment and a refrigeration system, the refrigeration system comprising at least two evaporators arranged in parallel, the evaporators being adapted to exchange heat with the storage compartment, each evaporator being connected in series with a corresponding expansion valve, the expansion valve being adapted to adjust the opening degree to change the refrigerant flow rate of the corresponding evaporator; the control method comprising:
[0007] Obtaining the current ambient temperature and the load status of the storage room;
[0008] generating opening adjustment information according to the ambient temperature and the load state, wherein the opening adjustment information is used to adjust the openings of the plurality of expansion valves;
[0009] The opening degrees of the plurality of expansion valves are controlled according to the opening degree adjustment information.
[0010] In some embodiments, generating the opening adjustment information according to the ambient temperature and the load state includes:
[0011] determining target operating states of the plurality of evaporators and a target operating mode of the refrigeration system according to the ambient temperature and the load state;
[0012] The opening adjustment information is determined according to the target working state and the target operating mode.
[0013] In some embodiments, determining the target operating states of the plurality of evaporators and the target operating mode of the refrigeration system according to the ambient temperature and the load state includes:
[0014] Determine ambient temperature characteristic information according to the ambient temperature, wherein the ambient temperature characteristic information is high ambient temperature, medium ambient temperature or low ambient temperature;
[0015] Determining load characteristic information according to the load state, the load characteristic information being high load, medium load or low load;
[0016] Obtaining a mapping relationship collection, the mapping relationship collection including a mapping relationship between preset ambient temperature characteristic information and preset load characteristic information and a preset working state and a preset operating mode;
[0017] According to the mapping relationship, the target working state corresponding to the current ambient temperature characteristic information is determined from the preset working state, and the target operating mode corresponding to the current ambient temperature characteristic information is determined from the preset operating mode.
[0018] In some embodiments, the preset working state includes multi-evaporator operation and single evaporator operation, and the preset operation mode includes normal mode, intelligent adjustment mode and energy-saving mode; the mapping relationship collection includes:
[0019] The mapping relationship between high ambient temperature and high load and multi-evaporator operation and normal mode;
[0020] The mapping relationship between medium ring temperature and medium load and single evaporator operation and intelligent adjustment mode;
[0021] The mapping relationship between low ambient temperature and low load and single evaporator operation and energy-saving mode.
[0022] In some embodiments, determining ambient temperature characteristic information according to the ambient temperature includes:
[0023] Obtaining a preset first temperature threshold and a second temperature threshold;
[0024] If the ambient temperature is lower than the first temperature threshold, determining that the ambient temperature characteristic information is a low ambient temperature;
[0025] If the ambient temperature is greater than or equal to the first temperature threshold and lower than the second temperature threshold, determining that the ambient temperature characteristic information is a medium ambient temperature;
[0026] If the ambient temperature is greater than or equal to the second temperature threshold, the ambient temperature characteristic information is determined to be a high ambient temperature.
[0027] In some embodiments, determining the opening adjustment information according to the target working state and the target operating mode includes:
[0028] determining a target opening and closing state of each expansion valve according to the target operating state, wherein the target opening and closing state is an open state or a closed state;
[0029] determining the expansion valve whose target opening / closing state is the open state as the target expansion valve;
[0030] determining a target opening degree of each of the target expansion valves according to the target operation mode;
[0031] The opening adjustment information is determined based on the target opening and closing state and the target opening information.
[0032] A control device for a refrigerator, the refrigerator comprising a storage compartment and a refrigeration system, the refrigeration system comprising at least two evaporators arranged in parallel, the evaporators being adapted to exchange heat with the storage compartment, each evaporator being connected in series with a corresponding expansion valve, the expansion valve being adapted to adjust the opening degree to vary the refrigerant flow rate of the corresponding evaporator; the control device comprising:
[0033] An acquisition module, configured to acquire the current ambient temperature and the load status of the storage room;
[0034] a processing module, configured to generate opening adjustment information according to the ambient temperature and the load state, wherein the opening adjustment information is used to adjust the openings of the plurality of expansion valves;
[0035] A control module is used to control the openings of the plurality of expansion valves according to the opening adjustment information.
[0036] A refrigerator, comprising:
[0037] storage room;
[0038] A refrigeration system comprising at least two evaporators arranged in parallel, the evaporators being adapted to exchange heat with the storage compartment, each evaporator being associated with a corresponding expansion valve, the expansion valve being adapted to adjust the opening degree to change the refrigerant flow rate of the corresponding evaporator;
[0039] A controller is connected to the plurality of expansion valves and is used in the above-mentioned refrigerator control method.
[0040] In some embodiments, the number of the evaporators is two.
[0041] A storage medium stores a computer program, which executes the above-mentioned refrigerator control method when the computer program is running.
[0042] The refrigerator control method, device, refrigerator, and storage medium provided in the embodiments of the present application, on the one hand, utilize multiple evaporators to cool the storage compartment, thereby improving refrigeration capacity, reducing energy loss during the flow of refrigerant, and enhancing the energy efficiency of the refrigeration system. In the event of a partial evaporator failure, other evaporators can be used for heat exchange, ensuring stable operation of the refrigeration system and the achievable performance of the refrigerator. On the other hand, multiple expansion valves are utilized to independently control each evaporator, and the opening of each expansion valve is controlled based on the ambient temperature and the load status within the storage compartment. This allows for efficient regulation of refrigerant flow and pressure, ensuring that each evaporator matches the actual heat exchange requirements, improving the accuracy of temperature control within the storage compartment and energy efficiency, and achieving energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS
[0043] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.
[0044] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.
[0045] Figure 1 A schematic structural diagram of the refrigeration system of the refrigerator provided in an embodiment of the present application.
[0046] Figure 2 This is a flowchart of a refrigerator control method provided in an embodiment of the present application.
[0047] Figure 3 A schematic structural diagram of a refrigerator control device provided in an embodiment of the present application.
[0048] Figure 4 A schematic structural diagram of a refrigerator provided in an embodiment of the present application.
[0049] Figure 5 Another structural schematic diagram of the refrigerator provided in an embodiment of the present application. DETAILED DESCRIPTION
[0050] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.
[0051] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.
[0052] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.
[0053] The use of "suitable for" or "configured to" in this application is intended to be open and inclusive language, and does not exclude devices that are adapted or configured to perform additional tasks or steps. In addition, the use of "based on" is intended to be open and inclusive, as a process, step, calculation, or other action that is "based on" one or more stated conditions or values may, in practice, be based on additional conditions or values beyond those stated.
[0054] In this application, the word "exemplary" is used to mean "serving as an example, illustration, or illustration." Any embodiment described in this application as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is given to enable any person skilled in the art to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that one of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in this application.
[0055] The present invention provides a method for controlling a refrigerator, which may be a single-door, double-door, side-by-side, French, cross-door, or other type of refrigerator. The refrigerator includes a storage compartment and a refrigeration system. For example, see Figure 1 , Figure 1 A schematic structural diagram of the refrigeration system of the refrigerator provided in an embodiment of the present application. The refrigeration system 100 includes a compressor 110, a condenser 120, and at least two evaporators 130. The evaporators 130 are suitable for exchanging heat with the storage compartment of the refrigerator. Multiple evaporators 130 are arranged in parallel, and each evaporator 130 is connected to the compressor 110 and the condenser 120 in sequence to form a refrigerant circulation loop. Each evaporator 130 is connected to a corresponding expansion valve 140. The expansion valve 140 is suitable for changing the refrigerant flow of the corresponding evaporator 130 by adjusting the opening. The expansion valve 140 can be connected in series to the parallel branch where the corresponding evaporator 130 is located. Optionally, multiple expansion valves 140 correspond one-to-one to multiple evaporators 130. The number of evaporators 130 is two, and the corresponding number of expansion valves 140 is also two. The expansion valve 140 can be an electronic expansion valve with adjustable opening.
[0056] For example, see Figure 2 , Figure 2 This is a flow chart of a refrigerator control method provided in an embodiment of the present application. The control method includes the following steps S201-S203:
[0057] Step S201: obtaining the current ambient temperature and the load status of the storage room;
[0058] The ambient temperature is acquired by an environmental sensor, such as a digital temperature and humidity sensor or a temperature sensor. The environmental sensor collects data periodically at a preset sampling frequency (e.g., once per minute), or is triggered by a control module to collect data in real time.
[0059] For example, multiple temperature sensors can be installed in the storage room to monitor the temperature in real time. By coupling the evaporator pipe temperature with the storage room temperature, a load-temperature difference correlation model can be established to calculate the heat load in real time to determine the load status. Alternatively, the current load status can be determined by analyzing the temperature recovery rate within the storage room. Alternatively, multi-dimensional feature fusion analysis can be performed, for example, by inputting parameters such as the temperature gradient within the room, energy consumption slope, and airflow velocity into a neural network to determine the current load status and predict future load changes within the room.
[0060] Step S202: Generate opening adjustment information according to the ambient temperature and load status, the opening adjustment information being used to adjust the openings of the plurality of expansion valves;
[0061] It should be noted that the current ambient temperature and the load status of the storage room can reflect the current cooling demand of the storage room. Understandably, when the storage room load is high, the refrigerator's refrigeration system needs to increase its cooling efficiency to maintain a low internal temperature, while when the storage room load is low, the refrigeration system's cooling efficiency needs to be reduced to achieve energy savings. The ambient temperature of the refrigerator directly affects the temperature of its storage room. For example, in the hot summer, due to the rising outside temperature, the refrigerator's refrigeration system needs to increase its cooling efficiency to maintain a low internal temperature. In the cold winter, due to the falling outside temperature, the refrigerator can reduce its cooling efficiency, effectively preserving freshness while preventing food from freezing.
[0062] It can be understood that by adjusting the opening of the expansion valve, the refrigerant flow of the corresponding evaporator can be adjusted, and then the heat exchange efficiency between the evaporator and the storage compartment can be adjusted, thereby achieving the adjustment of the refrigeration efficiency of the storage compartment.
[0063] Step S103: Control the openings of the multiple expansion valves according to the opening adjustment information.
[0064] It should be noted that the opening of multiple expansion valves is adjusted, including the case of adjusting the opening degree of the expansion valve, such as adjusting the opening of the expansion valve from 1 / 3 to 1 / 2, and also including the case of adjusting the opening to change the opening and closing state of the expansion valve, such as adjusting the opening of the expansion valve from 1 / 3 to 0 to make the expansion valve enter the closed state, or adjusting the opening of the expansion valve from 0 to 1 to make the expansion valve enter the open state.
[0065] The refrigerator control method provided in the embodiments of the present application utilizes multiple evaporators to cool the storage compartment, thereby improving refrigeration capacity, reducing energy loss during refrigerant flow, and enhancing the energy efficiency of the refrigeration system. In the event of a partial evaporator failure, other evaporators can be used for heat exchange, ensuring stable operation of the refrigeration system and the achievable performance of the refrigerator. Furthermore, by independently controlling each evaporator through multiple expansion valves and controlling the opening of each expansion valve based on ambient temperature and the load status within the storage compartment, efficient regulation of refrigerant flow and pressure is achieved, ensuring that each evaporator matches the actual heat exchange requirements, improving the accuracy of temperature control within the storage compartment and energy efficiency, and achieving energy conservation and emission reduction.
[0066] In some embodiments, generating the opening adjustment information according to the ambient temperature and the load state includes:
[0067] Determine target operating states of multiple evaporators and target operating modes of the refrigeration system based on ambient temperature and load conditions;
[0068] The opening adjustment information is determined according to the target working state and the target operating mode.
[0069] It should be noted that each evaporator has an operating state in which heat exchange is performed and an off state in which heat exchange is stopped. When the expansion valve opening corresponding to the evaporator is controlled to be greater than zero, the refrigerant will flow through the evaporator, allowing the evaporator to exchange heat with the storage compartment and achieve refrigeration of the refrigerated compartment. When the expansion valve opening corresponding to the evaporator is controlled to be zero, the refrigerant will not flow through the evaporator, and the evaporator will stop exchanging heat with the storage compartment. When the ambient temperature is high and / or the load state of the storage compartment is high, the refrigeration capacity of the refrigeration system can be increased by controlling multiple evaporators to enter the operating state, ensuring that the storage compartment can maintain a low temperature. When the ambient temperature is low and / or the load state of the storage compartment is low, the number of evaporators in the operating state can be reduced, reducing the cooling capacity of the refrigeration system, preventing food from freezing, reducing energy consumption, and achieving energy conservation and emission reduction effects.
[0070] The refrigeration system includes multiple operating modes such as normal mode, intelligent adjustment mode, and energy-saving mode. The operating mode of the refrigeration system needs to match the current refrigeration demand of the storage room. By matching the corresponding operating mode of the refrigeration system according to the actual refrigeration demand of the storage room, a high energy efficiency ratio of the refrigeration system can be achieved. When the refrigeration system is in different modes, the target refrigeration intensity of the corresponding storage room is different. The opening adjustment information of the expansion valve is determined according to the target operating mode. By adjusting the opening degree of the expansion valve to the target opening, the refrigerant flow of the corresponding evaporator can be adjusted, and then the heat exchange intensity of the evaporator can be changed to match the actual refrigeration intensity of the refrigeration system with the target refrigeration intensity. For example, when the target operating mode of the refrigeration system is energy-saving mode, by reducing the opening degree of the expansion valve, the flow of the refrigerant inside the evaporator can be reduced, thereby reducing the heat exchange intensity between the evaporator and the refrigeration room, so as to achieve a lower refrigeration intensity of the refrigeration system.
[0071] Regarding how to determine the target operating state of the evaporator and the target operating mode of the refrigeration system, the present application provides the following embodiment. Determining the target operating state of multiple evaporators and the target operating mode of the refrigeration system according to the ambient temperature and the load state includes:
[0072] Determine ambient temperature characteristic information according to the ambient temperature, the ambient temperature characteristic information being high ambient temperature, medium ambient temperature or low ambient temperature;
[0073] Determine load characteristic information according to the load state, the load characteristic information being high load, medium load or low load;
[0074] Obtain a mapping relationship collection, the mapping relationship collection including a mapping relationship between preset ambient temperature characteristic information and preset load characteristic information and a preset working state and a preset operating mode;
[0075] According to the mapping relationship, the target working state corresponding to the current ambient temperature characteristic information is determined from the preset working state, and the target operating mode corresponding to the current ambient temperature characteristic information is determined from the preset operating mode.
[0076] In the intelligent adjustment mode, the refrigeration system dynamically adjusts the opening degree of the expansion valve according to the heat load of the refrigeration compartment, so as to dynamically adjust the refrigerant flow and pressure.
[0077] Exemplarily, the preset working states include multi-evaporator working and single evaporator working, and the preset operating modes include normal mode, intelligent adjustment mode and energy-saving mode; the mapping relationship collection includes: the mapping relationship between high ambient temperature and high load and multi-evaporator working and normal mode; the mapping relationship between medium ambient temperature and medium load and single evaporator working and intelligent adjustment mode; the mapping relationship between low ambient temperature and low load and single evaporator working and energy-saving mode. In some embodiments, the mapping relationship collection may also include: the mapping relationship between high ambient temperature and medium load and multi-evaporator working and intelligent adjustment mode; the mapping relationship between high ambient temperature and low load and single evaporator working and intelligent adjustment mode; the mapping relationship between medium ambient temperature and low load and single evaporator working and energy-saving mode, etc., which are not listed one by one here. Among them, for a refrigeration system with two evaporators, the preset working states include dual evaporator working and single evaporator working.
[0078] Regarding how to determine whether the current ambient temperature characteristic information is high, medium, or low, the present application provides an optional implementation method. Determining the ambient temperature characteristic information based on the ambient temperature includes: obtaining a preset first temperature threshold and a second temperature threshold; if the ambient temperature is lower than the first temperature threshold, determining that the ambient temperature characteristic information is low; if the ambient temperature is greater than or equal to the first temperature threshold and lower than the second temperature threshold, determining that the ambient temperature characteristic information is medium; if the ambient temperature is greater than or equal to the second temperature threshold, determining that the ambient temperature characteristic information is high. For example, the first temperature threshold is 18°C and the second temperature threshold is 32°C.
[0079] In some embodiments, determining the opening adjustment information according to the target working state and the target operating mode includes:
[0080] Determine the target opening and closing state of each expansion valve according to the target working state, the target opening and closing state being an open state or a closed state;
[0081] determining an expansion valve whose target opening / closing state is an open state as a target expansion valve;
[0082] determining a target opening degree of each target expansion valve according to a target operation mode;
[0083] The opening adjustment information is determined based on the target opening and closing state and the target opening degree.
[0084] For example, if the target operating state is multi-evaporator operation, the target opening and closing states of at least two of the multiple expansion valves are determined to be open. If the target operating state is single-evaporator operation, the target opening and closing states of only one of the multiple expansion valves are determined to be open, and the target opening and closing states of the remaining expansion valves are all closed. For a refrigeration system with two evaporators, if the target operating state is multi-evaporator operation, the target opening and closing states of both expansion valves are determined to be open.
[0085] The cooling intensity corresponding to the target operating mode can be positively correlated with the target opening of the target expansion valve. For example, if the target operating mode is normal mode, the target opening of each target expansion valve is 1; if the target operating mode is energy-saving mode, the target opening of each target expansion valve is 1 / 3. Alternatively, if the target operating mode is intelligent adjustment mode, the target opening of each target expansion valve is dynamically adjusted based on the heat load of the refrigerated compartment.
[0086] The refrigerator control method provided in the embodiments of the present application, on the one hand, by providing multiple evaporators to cool the storage compartment, can improve refrigeration capacity, reduce energy loss generated by the refrigerant flow process, and enhance the energy efficiency of the refrigeration system. In the event of a partial evaporator failure, other evaporators can be used for heat exchange, ensuring stable operation of the refrigeration system and the achievable performance of the refrigerator. Furthermore, by independently controlling each evaporator through multiple expansion valves and controlling the opening of each expansion valve based on the ambient temperature and the load status within the storage compartment, efficient regulation of refrigerant flow and pressure can be achieved, ensuring that each evaporator matches the actual heat exchange requirements, improving the accuracy of temperature control within the storage compartment and energy utilization efficiency, and achieving energy conservation and emission reduction.
[0087] The present application also provides a refrigerator control device. For example, see Figure 3 , Figure 3 This is a schematic diagram of the structure of a refrigerator control device provided in an embodiment of the present application. The refrigerator includes a storage compartment and a refrigeration system. The refrigeration system includes at least two evaporators arranged in parallel, adapted to exchange heat with the storage compartment. Each evaporator is connected in series with a corresponding expansion valve, adapted to adjust the opening of the expansion valve to vary the refrigerant flow rate to the corresponding evaporator. The control device 300 includes an acquisition module 310, a processing module 320, and a control module 330.
[0088] Among them, the acquisition module 310 is used to obtain the current ambient temperature and the load status in the storage room; the processing module 320 is used to generate opening adjustment information based on the ambient temperature and load status, and the opening adjustment information is used to adjust the opening of multiple expansion valves; the control module 330 is used to control the opening of multiple expansion valves according to the opening adjustment information.
[0089] The refrigerator control device 300 provided in the embodiment of the present application utilizes multiple evaporators to cool the storage compartment, thereby improving refrigeration capacity, reducing energy loss during the refrigerant flow process, and enhancing the energy efficiency of the refrigeration system. In the event of a partial evaporator failure, other evaporators can be used for heat exchange, ensuring stable operation of the refrigeration system and the achievable performance of the refrigerator. Furthermore, the use of multiple expansion valves to independently control each evaporator and controlling the opening of each expansion valve based on the ambient temperature and the load status within the storage compartment enables efficient regulation of refrigerant flow and pressure, ensuring that each evaporator matches the actual heat exchange requirements, improving the accuracy of temperature control within the storage compartment and energy efficiency, and achieving energy conservation and emission reduction.
[0090] The present application also provides a refrigerator, for example, see Figure 4-Figure 5 , Figure 4 This is a schematic diagram of the structure of the refrigerator provided in the embodiment of the present application. Figure 5 Refrigerator 400 may be a refrigerator. Figure 4 The French refrigerator shown can also be a single-door, double-door, side-by-side, cross-door, or other types of refrigerators. Refrigerator 400 includes a storage compartment 410 , a refrigeration system 100 , and a controller 420 .
[0091] The refrigeration system 100 includes at least two evaporators 130 arranged in parallel. The evaporators 130 are suitable for exchanging heat with the storage compartment 410. An expansion valve 140 is provided in series with the corresponding evaporator 130 on the parallel branch where each evaporator 130 is located. The expansion valve 140 is suitable for adjusting the opening degree of the refrigerant flow to the evaporator 130. The controller 420 is connected to the multiple expansion valves 140 and is used to obtain the current ambient temperature and the load status within the storage compartment 410. The controller 420 generates opening adjustment information based on the ambient temperature and load status. The opening adjustment information is used to adjust the opening degree of the multiple expansion valves. The opening degree of the multiple expansion valves 140 is controlled based on the opening adjustment information.
[0092] Optionally, the number of the evaporators 130 is two, and the number of the corresponding expansion valves 140 is also two.
[0093] The refrigerator 400 provided in the embodiment of the present application utilizes multiple evaporators 130 to cool the storage compartment 410, thereby improving refrigeration capacity, reducing energy loss during the flow of refrigerant, and enhancing the energy efficiency of the refrigeration system. In the event of a partial evaporator failure, other evaporators can be used for heat exchange, ensuring stable operation of the refrigeration system and the achievable performance of the refrigerator. Furthermore, the multiple expansion valves 140 are used to independently control each evaporator 130, and the opening of each expansion valve 140 is controlled based on the ambient temperature and the load status within the storage compartment 410. This allows for efficient regulation of refrigerant flow and pressure, ensuring that each evaporator 130 matches the actual heat exchange requirements, improving the accuracy of temperature control within the storage compartment 410 and energy utilization efficiency, thereby achieving energy conservation and emission reduction.
[0094] The embodiment of the present application also provides a storage medium on which a computer program is stored, and when the computer program is run, the above-mentioned refrigerator control method is executed. If the integrated module / unit is implemented in the form of 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, the present invention implements all or part of the process in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and when the computer program is executed by the processor, it can implement the steps of the above-mentioned refrigerator control method embodiments.
[0095] The above is a detailed introduction to the refrigerator control method, device, refrigerator and storage medium provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, based on the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.
Claims
1. A refrigerator control method, characterized in that: The refrigerator includes a storage compartment and a refrigeration system, wherein the refrigeration system includes at least two evaporators arranged in parallel, the evaporators being adapted to exchange heat with the storage compartment, each evaporator being connected in series with a corresponding expansion valve, the expansion valve being adapted to adjust the opening degree to change the refrigerant flow rate of the corresponding evaporator; the control method comprising: Obtaining the current ambient temperature and the load status of the storage room; generating opening adjustment information according to the ambient temperature and the load state, wherein the opening adjustment information is used to adjust the openings of the plurality of expansion valves; The opening degrees of the plurality of expansion valves are controlled according to the opening degree adjustment information.
2. The refrigerator control method according to claim 1, characterized in that: Generating the opening adjustment information according to the ambient temperature and the load state includes: determining target operating states of the plurality of evaporators and a target operating mode of the refrigeration system according to the ambient temperature and the load state; The opening adjustment information is determined according to the target working state and the target operating mode.
3. The refrigerator control method according to claim 2, characterized in that: The determining of the target operating states of the plurality of evaporators and the target operating mode of the refrigeration system according to the ambient temperature and the load state includes: Determine ambient temperature characteristic information according to the ambient temperature, wherein the ambient temperature characteristic information is high ambient temperature, medium ambient temperature or low ambient temperature; Determining load characteristic information according to the load state, the load characteristic information being high load, medium load or low load; Obtaining a mapping relationship collection, the mapping relationship collection including a mapping relationship between preset ambient temperature characteristic information and preset load characteristic information and a preset working state and a preset operating mode; According to the mapping relationship, the target working state corresponding to the current ambient temperature characteristic information is determined from the preset working state, and the target operating mode corresponding to the current ambient temperature characteristic information is determined from the preset operating mode.
4. The refrigerator control method according to claim 3, characterized in that: The preset working states include multi-evaporator working and single evaporator working; the preset operating modes include normal mode, intelligent adjustment mode and energy-saving mode; the mapping relationship set includes: The mapping relationship between high ambient temperature and high load and multi-evaporator operation and normal mode; The mapping relationship between medium ring temperature and medium load and single evaporator operation and intelligent adjustment mode; The mapping relationship between low ambient temperature and low load and single evaporator operation and energy-saving mode.
5. The refrigerator control method according to claim 3, characterized in that: Determining ambient temperature characteristic information according to the ambient temperature includes: Obtaining a preset first temperature threshold and a second temperature threshold; If the ambient temperature is lower than the first temperature threshold, determining that the ambient temperature characteristic information is a low ambient temperature; If the ambient temperature is greater than or equal to the first temperature threshold and lower than the second temperature threshold, determining that the ambient temperature characteristic information is a medium ambient temperature; If the ambient temperature is greater than or equal to the second temperature threshold, the ambient temperature characteristic information is determined to be a high ambient temperature.
6. The refrigerator control method according to any one of claims 2 to 5, characterized in that: The determining of the opening adjustment information according to the target working state and the target operating mode includes: determining a target opening and closing state of each expansion valve according to the target operating state, wherein the target opening and closing state is an open state or a closed state; determining the expansion valve whose target opening / closing state is the open state as the target expansion valve; determining a target opening degree of each of the target expansion valves according to the target operation mode; The opening adjustment information is determined based on the target opening and closing state and the target opening information.
7. A refrigerator control device, characterized in that: The refrigerator includes a storage compartment and a refrigeration system, wherein the refrigeration system includes at least two evaporators arranged in parallel, the evaporators being adapted to exchange heat with the storage compartment, each evaporator being connected in series with a corresponding expansion valve, the expansion valve being adapted to adjust the opening degree to change the refrigerant flow rate of the corresponding evaporator; the control device includes: An acquisition module, configured to acquire the current ambient temperature and the load status of the storage room; a processing module, configured to generate opening adjustment information according to the ambient temperature and the load state, wherein the opening adjustment information is used to adjust the openings of the plurality of expansion valves; A control module is used to control the openings of the plurality of expansion valves according to the opening adjustment information.
8. A refrigerator, characterized in that: include: storage room; A refrigeration system comprising at least two evaporators arranged in parallel, the evaporators being adapted to exchange heat with the storage compartment, each evaporator being associated with a corresponding expansion valve, the expansion valve being adapted to adjust the opening degree to change the refrigerant flow rate of the corresponding evaporator; A controller is connected to the plurality of expansion valves and is used to execute the refrigerator control method according to any one of claims 1 to 6.
9. The refrigerator according to claim 8, characterized in that The number of the evaporators is two.
10. A storage medium, characterized in that: A computer program is stored thereon, and when the computer program is run, the control method for the refrigerator according to any one of claims 1 to 6 is executed.