Energy-saving precise-control defrosting method, terminal equipment and readable storage medium
By collecting temperature fluctuation values to determine the defrosting mode and precisely controlling the operation of the heating wire, the problem of inconsistent defrosting of the evaporator or air duct is solved, achieving precise control of the defrosting process and reducing energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- QINDAO HAIER REFRIGERATOR CO LTD
- Filing Date
- 2024-10-21
- Publication Date
- 2026-04-21
AI Technical Summary
In existing frost-free air-cooled refrigerators, the defrosting process is inconsistent in different areas of the evaporator or air duct, resulting in uncontrollable defrosting effect and wasted energy.
By collecting the temperature fluctuation values of the chamber and evaporator during compressor operation, the defrosting mode is determined and the operation of the heating wire is precisely controlled, including the first defrosting mode and the second defrosting mode, which control the defrosting process with different exit temperatures.
It achieves precise control of the defrosting process, reduces ineffective or excessive heating, and significantly reduces energy consumption.
Smart Images
Figure CN121898080A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of refrigeration systems, and in particular to an energy-saving and precise defrosting method, terminal equipment, and readable storage medium. Background Technology
[0002] A refrigerator is a storage device that uses a refrigeration system to provide a low-temperature environment. Its evaporator or air ducts are prone to freezing.
[0003] Currently, defrosting in mass-produced frost-free air-cooled refrigerators mainly relies on various types of defrosting heating wires. These wires heat the evaporator, raising the overall temperature of the evaporator compartment. A defrost sensor detects this temperature, and when it reaches a preset value, the heating wire stops working, thus achieving defrosting. However, due to variations in the amount of frost buildup in different areas of the evaporator or air duct, and differences in the amount of heat received by different areas of the evaporator or air duct due to varying distances from the heating wire during defrosting, the defrosting process is inconsistent across different areas. Some areas have already defrosted, while others still have a large amount of ice or frost residue. This results in uncontrollable temperature control during defrosting and a lack of monitoring of the defrosting effect. To reach the preset value of the defrost sensor, the heating wire spends most of its time in extra heating, wasting energy. Summary of the Invention
[0004] To address the current problems of uncontrollable temperature and lack of intelligent monitoring of defrosting effect during evaporator defrosting, this application provides an energy-saving and precise defrosting method, comprising the following steps:
[0005] S1: Collect the first fluctuation value N of the compartment temperature and the second fluctuation value M of the evaporator temperature during compressor operation;
[0006] S2: Determine whether the second fluctuation value M is less than the preset first temperature value T. If yes, proceed to step S3; otherwise, skip to step S5.
[0007] S3: Determine whether the compressor running time is greater than a preset time threshold. If yes, proceed to step S4; otherwise, return to step S1.
[0008] S4: Activate the first defrost mode;
[0009] S5: Determine whether the second fluctuation value M is less than the first fluctuation value N. If yes, proceed to step S6; otherwise, return to step S1.
[0010] S6: Activate the second defrost mode;
[0011] The first defrosting mode has a first exit temperature T1, and the second defrosting mode has a second exit temperature T2, where T1 > T2.
[0012] Furthermore, the second fluctuation value M includes the second fluctuation values M1, M2, ..., Mi, ... of different regions of the evaporator, where Mi is the second fluctuation value of the temperature fluctuation of the i-th region of the evaporator, and the second fluctuation value Mi of different regions is respectively compared with the first temperature value T to determine the magnitude relationship.
[0013] Furthermore, the first defrosting mode includes:
[0014] The evaporator is heated and its temperature (K) is recorded.
[0015] Determine whether the evaporator temperature K is greater than or equal to the first exit temperature T1. If yes, exit the first defrosting mode; otherwise, continue heating the evaporator.
[0016] Furthermore, the second defrosting mode includes:
[0017] Collect the first initial temperature K1 of the evaporator;
[0018] Based on the first initial temperature K1 of the evaporator, a first heating power is selected to heat the evaporator, and the first final temperature K11 of the evaporator is collected;
[0019] After the first preset time ends, the second end temperature K12 of the evaporator is collected, and it is determined whether K11 < K12. If yes, the second defrosting mode is exited; otherwise, the evaporator is heated.
[0020] Furthermore, the first heating power is set to be inversely proportional to the first initial temperature K1.
[0021] Furthermore, the first preset time is 30 seconds.
[0022] Furthermore, the first exit temperature T1 is set to 5°C, and the second exit temperature T2 is set to -2°C.
[0023] Furthermore, before step S5, it includes determining whether the time interval between the current time and the end of the previous second defrosting mode satisfies the condition that the time interval is greater than the second preset time.
[0024] This application discloses a terminal device, which includes a memory, a processor, and a computer program stored on the processor and capable of running on the processor. When the computer program is executed by the processor, it implements the steps of the above-described energy-saving and precise defrosting method.
[0025] This application also provides a computer-readable storage medium storing a program that, when executed by the processor, implements the steps of the above-described energy-saving and precision-controlled defrosting method.
[0026] This application relates to an energy-saving and precision defrosting method, which collects a first fluctuation value N of the compressor compartment temperature and a second fluctuation value M of the evaporator temperature fluctuation during compressor operation; determines whether the second fluctuation value M is less than a preset first temperature value T; if it is less than the first temperature value, determines whether the compressor operation time is greater than a preset time threshold; if it is greater than the preset time threshold, activates a first defrosting mode; if it is not greater than the preset time threshold, re-collects the first and second fluctuation values; if they are greater than the first temperature value, activates a second defrosting mode. The first and second defrosting modes have different exit defrosting temperatures. By monitoring the evaporator temperature fluctuation value in real time, the operation of the defrosting heating wire is precisely controlled, avoiding ineffective or excessive heating, thereby significantly reducing energy consumption. Attached Figure Description
[0027] Figure 1 A schematic diagram of an energy-saving and precision defrosting method provided in this application;
[0028] Figure 2 This is a flowchart of the first defrosting mode in this application;
[0029] Figure 3 This is a flowchart of the second defrosting mode in this application;
[0030] Figure 4 This is a schematic diagram of the overall evaporator structure according to an embodiment of this application;
[0031] Figure 5 A schematic diagram of the terminal device provided in this application.
[0032] Explanation of reference numerals in the attached figures
[0033] 1. Evaporator; 2. Heating element; 3. Sensor; 10. Terminal equipment; 11. Memory; 12. Processor; 13. Computer program. Detailed Implementation
[0034] To gain a more detailed understanding of the features and technical content of the embodiments disclosed herein, the following description is provided in conjunction with the accompanying drawings. Figure 1-5 The implementation of the embodiments of this disclosure is described in detail. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, various details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other instances, well-known structures and apparatuses may be simplified in their depiction to simplify the drawings.
[0035] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure 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 for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.
[0036] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.
[0037] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.
[0038] Unless otherwise stated, the term "multiple" means two or more.
[0039] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.
[0040] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.
[0041] To provide a better understanding of the purpose, structure, features, and functions of this application, detailed descriptions are provided below with reference to specific embodiments.
[0042] This application provides an energy-saving and precise defrosting method, including the following steps:
[0043] S1: Collect the first fluctuation value N of the compartment temperature and the second fluctuation value M of the evaporator 1 temperature during compressor operation;
[0044] S2: Determine whether the second fluctuation value M is less than the preset first temperature value T. If yes, proceed to step S3; otherwise, skip to step S5.
[0045] S3: Determine whether the compressor running time is greater than a preset time threshold. If yes, proceed to step S4; otherwise, return to step S1.
[0046] S4: Activate the first defrost mode;
[0047] S5: Determine whether the second fluctuation value M is less than the first fluctuation value N. If yes, proceed to step S6; otherwise, return to step S1.
[0048] S6: Activate the second defrost mode;
[0049] The first defrosting mode has a first exit temperature T1, and the second defrosting mode has a second exit temperature T2, where T1 > T2.
[0050] From the moment the compressor is powered on, the first fluctuation value N of the compartment temperature and the second fluctuation value M of the evaporator 1 temperature fluctuation are continuously monitored; the first fluctuation value N reflects the change in the compartment temperature, and the second fluctuation value M reflects the operating status of the evaporator 1.
[0051] The second fluctuation value M is compared with the preset first temperature value T. The preset first temperature T can be set according to the actual situation. In this application, the preset first temperature value T is 1℃.
[0052] If the second fluctuation value M is less than the preset first temperature value T, it indicates that the temperature fluctuation of evaporator 1 is small, suggesting that evaporator 1 may be in an abnormal state of frosting or icing. By determining whether the compressor running time exceeds a preset time threshold, it is ensured that the compressor has run for a certain period of time and the refrigeration system has also run stably for a period of time, so as to more accurately select the defrosting mode. The preset time threshold is determined according to actual needs; in this application, it is set to 6 hours, but it is not limited to 6 hours.
[0053] If the second fluctuation value M is less than the preset first temperature value T and the compressor running time is greater than the preset time threshold, the first defrosting mode is activated. In an optional embodiment of this application, the first defrosting mode is set as an abnormal defrosting mode, that is, a defrosting mode activated when the evaporator 1 experiences severe frosting or icing. If the second fluctuation value M is less than the preset first temperature value T but the compressor running time is less than or equal to the preset time threshold, it is determined that the compressor is in an unstable start-up state, and the first fluctuation value N and the second fluctuation value M are collected again.
[0054] Severe frosting on evaporator 1 can be defined as a frost layer with a thickness greater than 0.2 mm forming on the surface of evaporator 1, or a frost layer covering more than 70% of the surface of evaporator 1. This definition of severe frosting on evaporator 1 is for reference only and is not intended to limit the scope of this application.
[0055] If the second fluctuation value M is greater than or equal to the preset first temperature value T, then determine whether the second fluctuation value M is less than the first fluctuation value N.
[0056] If the second fluctuation value M of evaporator 1 is less than the first fluctuation value N of the compartment temperature, then the temperature fluctuation of evaporator 1 is smaller than that of the compartment temperature, and defrosting is required. At this time, the second defrosting mode is activated. In the optional embodiment of this application, the second defrosting mode is set to the normal defrosting mode, that is, the defrosting mode activated when evaporator 1 is generally frosted. If the second fluctuation value M of evaporator 1 is not less than the first fluctuation value N of the compartment temperature, then the first fluctuation value N and the second fluctuation value M are collected again.
[0057] The term "general frost formation" on evaporator 1 refers to frost that is thin, such as less than 0.1 mm or covering an area less than 30% of the surface area of evaporator 1. This definition of "general frost formation" on evaporator 1 is for reference only and is not intended to limit the application of this application.
[0058] In this application, the first defrosting mode is set with a first exit temperature T1, and the second defrosting mode is set with a second defrosting temperature T2, where T1 > T2. The first defrosting mode is selected when it is determined that there is severe frost on the evaporator 1. The higher first exit temperature T1 ensures that the frost layer on the surface of the evaporator 1 is completely melted during the defrosting process, thereby avoiding residual frost layer affecting the cooling effect of the evaporator 1. The higher exit temperature helps to maintain a higher surface temperature of the evaporator 1 for a period of time after defrosting, reducing the possibility of re-frost formation in a short period of time. When the frost is not severe, the lower second exit temperature T2 can reduce unnecessary energy consumption during the defrosting process and improve the energy efficiency ratio of the system. After the second exit temperature T2 is completed, the surface of the evaporator 1 will still maintain a certain residual temperature, which is sufficient to melt the remaining small amount of frost layer, effectively saving energy consumption.
[0059] In an optional embodiment of this application, the first exit temperature T1 is set to 5 degrees Celsius, and the second exit temperature is set to -2 degrees Celsius. The settings of the first exit temperature T1 and the second exit temperature T2 are for reference only and are not intended to limit the implementation of this application.
[0060] To more accurately monitor and analyze temperature fluctuations in different areas of evaporator 1, the second fluctuation value M includes second fluctuation values M1, M2, ..., Mi, ... for different areas of evaporator 1, where Mi is the second fluctuation value of the temperature fluctuation in the i-th area of evaporator 1. The second fluctuation values Mi for different areas are compared with the first temperature value T. In actual operation, different areas of evaporator 1 may experience temperature and frosting differences due to various factors such as airflow, refrigerant distribution, and the external environment. A more detailed monitoring method, segmented by area, can more accurately determine the frosting situation in each area of evaporator 1.
[0061] See Figure 4 Specifically, the evaporator 1 can be divided into different areas, with independent sensors 3 set in each area to collect the second fluctuation value M of each area, and independent heating wires set in each area to achieve independent heating and defrosting of each area of the evaporator 1.
[0062] The second fluctuation value Mi of different regions is compared with the preset first temperature value T. If the second fluctuation value Mi of the i-th region is less than the preset first temperature value T and the compressor running time is greater than the preset time threshold, the first defrosting mode is activated; if the second fluctuation value Mi of the i-th region is less than the preset first temperature value T but the compressor running time is less than or equal to the preset time threshold, it is determined that the compressor is in an unstable state after startup, and the first fluctuation value N and the second fluctuation value M of each region are collected again.
[0063] If the second fluctuation value Mi of the i-th region is greater than or equal to the preset first temperature value T, then it is determined whether the second fluctuation value Mi of the i-th region is less than the first fluctuation value N. If the second fluctuation value Mi of the i-th region of evaporator 1 is less than the first fluctuation value N of the compartment temperature, then the second defrosting mode is activated. If the second fluctuation value M of evaporator 1 is not less than the first fluctuation value N of the compartment temperature, then the process returns to re-collect the first fluctuation value N and the second fluctuation value M.
[0064] The comparison between the second fluctuation value M of each different area of the evaporator 1 and the first temperature value T or the first fluctuation value of the compartment temperature determines whether to select the first defrosting mode or the second defrosting mode. The detailed process is the same as the above steps S1 to S6, and will not be repeated here.
[0065] See Figure 2 The first defrosting mode includes:
[0066] S11: Heat the evaporator 1 and collect the temperature K of the evaporator 1;
[0067] S12: Determine whether the temperature K of the evaporator 1 is greater than or equal to the first exit temperature T1. If yes, exit the first defrosting mode; otherwise, continue heating the evaporator 1.
[0068] To melt the frost layer on the surface of evaporator 1, heating element 2 is activated to heat evaporator 1. During the heating process, the system continuously collects temperature data of evaporator 1 and records it as K. This K is compared with the first exit temperature T1 to determine the defrosting progress and whether the first defrosting mode has been exited. If the evaporator 1 temperature K is greater than or equal to the first exit temperature T1, evaporator 1 has been sufficiently heated, and the frost layer is determined to have melted. If the evaporator 1 temperature K is less than the first exit temperature T1, it indicates that evaporator 1 has not been sufficiently heated, and the frost layer has not completely melted. In this case, heating of evaporator 1 continues, and temperature data is continuously collected until K reaches or exceeds T1.
[0069] See Figure 3 The second defrosting mode includes:
[0070] S21: Collect the first initial temperature K1 of evaporator 1;
[0071] S22: Based on the first initial temperature K1 of the evaporator 1, select the first heating power to heat the evaporator 1, and collect the first final temperature K11 of the evaporator 1;
[0072] S23: After the first preset time ends, the second end temperature K12 of the evaporator 1 is collected, and it is determined whether K11 < K12. If yes, the second defrosting mode is exited; otherwise, the evaporator 1 is heated.
[0073] Before defrosting begins, the system first collects the initial temperature of evaporator 1, denoted as K1. Based on the collected initial temperature K1, an appropriate initial heating power is selected to heat evaporator 1. The selection of heating power may be based on a preset algorithm or historical experience to avoid energy waste. After heating for a period of time, the system collects the temperature of evaporator 1, denoted as K11. At this point, it waits for a first preset time, and then collects the temperature of evaporator 1 again, denoted as K12. The first preset time allows evaporator 1 to utilize residual heat after heating stops to further melt the remaining frost layer, thus saving energy.
[0074] After the first preset time has elapsed, compare the values of K11 and K12. If K11 is less than K12, it means that the temperature of evaporator 1 has risen after heating has stopped, indicating that the frost layer has completely melted. At this point, the second defrosting mode can be exited. If K11 is not less than K12, it means that the temperature of evaporator 1 has not risen, indicating that the frost layer has not completely melted. In this case, continue heating evaporator 1, which may require adjusting the heating power or extending the heating time until the exit condition is met. That is, the first end temperature K11 after stopping heating evaporator 1 is less than the second end temperature K12 after stopping heating and waiting for the first preset time.
[0075] To more accurately monitor and analyze temperature fluctuations in different areas of evaporator 1, evaporator 1 can be divided into different areas, each equipped with an independent sensor 3 and heating element. An independent sensor 3 is set up in the i-th area to collect its first initial temperature K1(i), first final temperature K11(i), and second final temperature K12(i). This allows for independent determination of the frosting status and whether to exit the first or second defrosting mode for the i-th area of evaporator 1. During defrosting, an independent heating wire is set up in the i-th area to achieve independent defrosting or exit the first or second defrosting mode for the i-th area of evaporator 1. The specific control method is the same as the detailed description of the first and second defrosting modes described above, and will not be repeated here.
[0076] In one embodiment, the first heating power is set to be inversely proportional to the first initial temperature K1. If the first initial temperature K1 is low, the surface temperature of the evaporator 1 is determined to be low, and the frost layer is determined to be thick. Therefore, the first heating power is set to be high to achieve rapid melting of the double layer. If the first initial temperature K1 is high, the surface temperature of the evaporator 1 is determined to be high, and the frost layer is determined to be thin. Therefore, the first heating power is set to be low to meet the defrosting requirements with lower energy consumption.
[0077] In an optional implementation, the heating power is adjusted by the resistance of the heating wire. When the resistance of the heating wire is set to a smaller value, the heating power is larger; when the resistance of the heating wire is set to a larger value, the heating power is smaller. Of course, fuzzy control algorithms, neural network algorithms, lookup table methods, or adjusting the heating power based on historical experience can also be selected; this application does not impose specific limitations.
[0078] The first preset time is 30 seconds. That is, after heating the evaporator 1 and collecting the first end temperature K11, wait 30 seconds, collect the temperature of the evaporator 1, and obtain the second end temperature K12. The 30 seconds are to allow the temperature of the evaporator 1 to stabilize, eliminating the influence of temperature fluctuations caused by the instability of the evaporator 1 on the determination of whether to exit the second defrost mode. Of course, other time periods can be set according to actual needs, such as 45 seconds, 60 seconds, etc., and this application does not impose any restrictions.
[0079] In one embodiment of this application, before step S5, it includes determining whether the time interval between the current time and the end of the previous second defrost mode is greater than a second preset time. If the time interval is greater than the second preset time, then it continues to determine whether to start the second defrost mode; if the time interval is not greater than the second preset time, then the first fluctuation value N and the second fluctuation value M are re-acquired. That is, before determining the second defrost mode, it is determined whether the time interval between the current time and the end of the previous second defrost mode is greater than the second preset time. This ensures that the second defrost mode is not started too frequently, thereby avoiding unnecessary energy consumption of the system. The specific value of the second preset time can be set according to the actual operating conditions and defrost requirements.
[0080] This application also provides a terminal device 10, which includes a memory 11, a processor 12, and a program stored on the processor 12 and executable on the processor 12. When the program is executed by the processor 12, it implements the steps of the above-described energy-saving and precision defrosting method.
[0081] This application also provides a computer-readable storage medium storing a program that, when executed by processor 12, implements the steps of the energy-saving precision defrosting method described above. The computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or equipment, or any suitable combination thereof. Alternatively, the computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.
[0082] This application relates to an energy-saving and precision defrosting method, which collects a first fluctuation value N of the compressor compartment temperature and a second fluctuation value M of the evaporator temperature fluctuation during compressor operation; determines whether the second fluctuation value M is less than a preset first temperature value T; if it is less than the first temperature value, determines whether the compressor operation time is greater than a preset time threshold; if it is greater than the preset time threshold, activates a first defrosting mode; if it is not greater than the preset time threshold, re-collects the first and second fluctuation values; if they are greater than the first temperature value, activates a second defrosting mode. The first and second defrosting modes have different exit defrosting temperatures. By monitoring the evaporator temperature fluctuation value in real time, the operation of the defrosting heating wire is precisely controlled, avoiding ineffective or excessive heating, thereby significantly reducing energy consumption.
[0083] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.
[0084] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus or device (such as a computer-based system, a processor-included system or other system that can fetch and execute instructions from, an instruction execution system, apparatus or device).
[0085] This application has been described with reference to the above-mentioned embodiments; however, the above embodiments are merely examples for implementing this application. It must be noted that the disclosed embodiments do not limit the scope of this application. On the contrary, any modifications and refinements made without departing from the spirit and scope of this application are within the scope of patent protection of this application.
Claims
1. An energy-saving and precision-controlled defrosting method, characterized in that, S1: Collect the first fluctuation value N of the compartment temperature and the second fluctuation value M of the evaporator (1) temperature fluctuation during the operation of the compressor; S2: Determine whether the second fluctuation value M is less than the preset first temperature value T. If yes, proceed to step S3; otherwise, skip to step S5. S3: Determine whether the compressor running time is greater than a preset time threshold. If yes, proceed to step S4; otherwise, return to step S1. S4: Activate the first defrost mode; S5: Determine whether the second fluctuation value M is less than the first fluctuation value N. If yes, proceed to step S6; otherwise, return to step S1. S6: Activate the second defrost mode; The first defrosting mode has a first exit temperature T1, and the second defrosting mode has a second exit temperature T2, where T1 > T2.
2. The energy-saving and precision-controlled defrosting method according to claim 1, characterized in that, The second fluctuation value M includes the second fluctuation values M1, M2, ..., Mi, ... of different regions of the evaporator (1), where Mi is the second fluctuation value of the temperature fluctuation of the i-th region of the evaporator (1), and the second fluctuation value Mi of different regions is compared with the first temperature value T to determine their magnitude relationship.
3. The energy-saving and precision-controlled defrosting method according to claim 1, characterized in that, The first defrosting mode includes: The evaporator (1) is heated and the temperature K of the evaporator (1) is collected; Determine whether the temperature K of the evaporator (1) is greater than or equal to the first exit temperature T1. If yes, exit the first defrosting mode; otherwise, continue heating the evaporator (1).
4. The energy-saving and precision-controlled defrosting method according to claim 1, characterized in that, The second defrosting mode includes: Collect the first initial temperature K1 of the evaporator (1); Based on the first initial temperature K1 of the evaporator (1), a first heating power is selected to heat the evaporator (1), and the first final temperature K11 of the evaporator (1) is collected; After the first preset time ends, the second end temperature K12 of the evaporator (1) is collected, and it is determined whether K11 < K12 is satisfied. If yes, the second defrosting mode is exited; otherwise, the evaporator (1) is heated.
5. The energy-saving and precision-controlled defrosting method according to claim 4, characterized in that, The first heating power is set to be inversely proportional to the first initial temperature K1.
6. The energy-saving and precision-controlled defrosting method according to claim 4, characterized in that, The first preset time is 30 seconds.
7. The energy-saving and precision-controlled defrosting method according to claim 1, characterized in that, The first exit temperature T1 is set to 5℃, and the second exit temperature T2 is set to -2℃.
8. The energy-saving and precision-controlled defrosting method according to claim 1, characterized in that, Before step S5, it includes determining whether the time interval between the current time and the end of the previous second defrosting mode satisfies the condition that the time interval is greater than the second preset time.
9. A terminal device, characterized in that, The terminal device (10) includes a memory (11), a processor (12), and a computer program (13) stored on the processor (12) and capable of running on the processor (12). When the computer program (13) is executed by the processor (12), it implements the steps of the energy-saving precision defrosting method according to any one of claims 1-8.
10. A computer-readable storage medium storing a computer program (13), characterized in that, When the computer program (13) is executed by the processor (12), it implements the steps of the energy-saving precision defrosting method according to any one of claims 1-8.