Intelligent defrosting method and device for cold storage, storage medium and electronic terminal

Abstract

The application discloses an intelligent defrosting method and device for a cold storage, a storage medium and an electronic terminal. The cold storage comprises a refrigeration system, a defrosting system and a storage space. The intelligent defrosting method comprises the following steps: obtaining a time T1 spent by the refrigeration system in a first refrigeration process, a time T2 spent by the refrigeration system in a second refrigeration process, the time of the first refrigeration process being earlier than the time of the second refrigeration process, and the refrigeration system not performing the refrigeration process between the first refrigeration process and the second refrigeration process; when receiving a defrosting instruction, if T2<=T1*a, the defrosting system does not perform the defrosting process; and if T2>T1*a, the defrosting system is controlled to perform the defrosting process. The defrosting method can achieve the goals of power saving, green and energy saving for the cold storage. Experimental data show that the defrosting method can effectively save energy by about 10%.

Description

Technical Field

[0001] The present invention relates to the technical field of cold storage defrosting, and specifically, it is an intelligent defrosting method, device, storage medium and electronic terminal for cold storage. Background Art

[0002] Currently, in the cold storage industry, a periodic defrosting method is generally adopted. The defrosting cycle is either the cumulative power-on time of the temperature controller or the cumulative operation time of the compressor. The characteristic of these two defrosting timing methods is that the defrosting cycle is relatively fixed, while the operating conditions of cold storage vary, and there are often situations of defrosting without frost and not defrosting when there is frost. Defrosting without frost will result in waste of energy consumption. Not defrosting when there is frost will lead to a reduction in refrigeration efficiency.

[0003] Therefore, how to use a more intelligent defrosting method to solve the existing deficiencies and shortcomings is the direction that those in this industry are eager to improve. Summary of the Invention

[0004] The purpose of the present invention is to address the above problems, and provide an intelligent defrosting method, device, storage medium and electronic terminal for cold storage. The cold storage includes a refrigeration system, a defrosting system and a storage space. The refrigeration system is used to refrigerate the storage space, and the defrosting system is used to defrost the storage space, specifically including the following steps:

[0005] Obtain the time T1 spent on the first refrigeration treatment of the refrigeration system and the time T2 spent on the second refrigeration treatment. The time of the first refrigeration treatment is earlier than that of the second refrigeration treatment, and between the first and second refrigeration treatments, the refrigeration system does not perform refrigeration treatment;

[0006] When a defrosting instruction is received, when T2 ≤ T1*a, the defrosting system does not perform defrosting treatment; when T2 > T1*a, control the defrosting system to perform defrosting treatment; where a > 0, and between the time of receiving the defrosting instruction and the end time of the second refrigeration treatment, the refrigeration system does not perform refrigeration treatment.

[0007] Including any of the above technical solutions, specifically including:

[0008] When a defrosting instruction is received, when T2 ≤ T1*a and T2 < T1, modify the value of the time T1 spent on the first refrigeration treatment of the refrigeration system to T2.

[0009] Including any of the above technical solutions, specifically including:

[0010] A data storage system is provided in the cold storage;

[0011] The intelligent defrosting method further includes: continuously performing the following steps: when a cooling command is received, the cooling system performs cooling processing, and when the cooling processing ends, the start time and time spent of this cooling processing are stored in the data storage system;

[0012] The phrase "obtaining the time T1 spent on the first cooling process of the refrigeration system, the time T2 spent on the second cooling process, the time of the first cooling process being earlier than the time of the second cooling process, and the refrigeration system not performing any cooling process between the first and second cooling processes" specifically includes: obtaining the two cooling processes whose start time is closest to the current time from the data storage system, wherein the one with the earlier start time is the first cooling process, and the one with the later start time is the second cooling process.

[0013] Including any of the above technical solutions, specifically including: a = 1.3.

[0014] Including any of the above technical solutions, specifically including:

[0015] The cold storage is equipped with a cold storage door for opening and closing the storage space;

[0016] The phrase "storing the start time and time spent in this refrigeration process in the data storage system" specifically includes: obtaining the start time and end time of this refrigeration process, and the total time T3 during which the cold storage door is open between the start time and end time; then the time spent in this refrigeration process = end time - start time - T3; and storing the start time and time spent in this refrigeration process in the data storage system.

[0017] Including any of the above technical solutions, the "controlling the defrosting system to perform defrosting processing" specifically includes: controlling the defrosting system to perform defrosting processing for a preset time.

[0018] Including any of the above technical solutions, the "receiving a cooling command" means that a cooling command has been received when the temperature of the storage space is greater than or equal to a preset temperature.

[0019] To achieve one of the above-mentioned objectives, one embodiment of the present invention provides an intelligent defrosting device for a cold storage facility. The cold storage facility includes a refrigeration system, a defrosting system, and a storage space. The refrigeration system is used to refrigerate the storage space, and the defrosting system is used to defrost the storage space. Specifically, it includes the following modules:

[0020] The acquisition module acquires the time T1 spent on the first cooling process of the refrigeration system and the time T2 spent on the second cooling process. The time of the first cooling process is earlier than the time of the second cooling process, and the refrigeration system does not perform any cooling process between the first and second cooling processes.

[0021] When the execution module receives a defrost command, if T2 ≤ T1*a, the defrost system does not perform defrost processing; if T2 > T1*a, the defrost system is controlled to perform defrost processing; where a > 0, the refrigeration system does not perform refrigeration processing between the time of receiving the defrost command and the end time of the second refrigeration process.

[0022] To achieve one of the above-mentioned objectives, one embodiment of the present invention provides a storage medium storing program instructions, specifically including, when the program instructions are executed, implementing the intelligent defrosting method described in any of the above claims.

[0023] To achieve one of the above-mentioned objectives, one embodiment of the present invention provides an electronic terminal, including a processor and a memory, wherein the memory stores program instructions, specifically including the processor executing the program instructions to implement the intelligent defrosting method as described in any of the above claims.

[0024] The advantages of the intelligent defrosting method, device, storage medium and electronic terminal for cold storage provided by this invention are: it can achieve the goals of saving electricity, being green and energy-efficient in cold storage without the need for hardware investment and modification. Experimental data shows that this defrosting method can effectively save about 10% of energy. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the intelligent frost removal method described in this invention. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of the present invention.

[0027] If the present invention involves orientation (e.g., up, down, left, right, front, back, outside, inside, etc.) in its description, then the orientations involved need to be defined.

[0028] Embodiment 1 of the present invention provides an intelligent defrosting method for cold storage. The cold storage includes a refrigeration system, a defrosting system, and a storage space. The refrigeration system is used to refrigerate the storage space, and the defrosting system is used to defrost the storage space. An execution module can be set in the cold storage to execute the defrosting method. The execution module can be an MCU (Microcontroller Unit), a PC (Personal Computer), an industrial control computer, etc.

[0029] The working principle of this refrigeration system is as follows: A refrigeration evaporator pipe is installed in the storage space, and a fan motor is also installed in the storage space. When the compressor is working, the fan motor is simultaneously powered on and runs. The rotation of the fan forces airflow through the refrigeration evaporator pipe, thereby generating forced convection and transferring cold air to every corner of the storage space. Understandably, this refrigeration method can achieve a very uniform overall temperature in the storage space; however, due to the forced convection of the fan, moisture evaporates quickly. The evaporator used in the storage space is usually a finned evaporator, which is prone to frost buildup on the fins. Therefore, a heater is generally installed on the evaporator. The structure of the heater varies depending on the design, and the installation method and structure also differ, but its main function is to melt the frost on the evaporator. This heater and its control device can be considered a defrosting system. The intelligent defrosting method for cold storage includes the following steps:

[0030] Step 201: Obtain the time T1 spent on the first cooling process of the refrigeration system and the time T2 spent on the second cooling process. The time of the first cooling process is earlier than the time of the second cooling process, and the refrigeration system does not perform any cooling process between the first and second cooling processes.

[0031] Here, the execution module can run two control processes or threads, etc.

[0032] A process or thread controls the operation of the refrigeration system. When the temperature in the storage space exceeds a first preset temperature value, the system begins cooling the space (this time is the start time). The temperature then continues to decrease until it falls below a second preset temperature value, at which point the refrigeration system stops operating (this time is the end time), thus completing one cooling cycle. During the cooling process, the process or thread can also collect relevant information, such as start time, end time, whether the cold storage door is open and / or closed, and the opening and closing times each time, the initial temperature of the storage space, and the final temperature. Furthermore, this execution module stores this information. It can be understood that the time T1 for the first cooling cycle and the time T2 for the second cooling cycle can be obtained from the information stored by the execution module.

[0033] Another process or thread is used to control the operation of the defrosting system. The defrosting system can be started in the following ways: after a refrigeration process is completed, a preset time can be waited before the intelligent defrosting method is executed. At this time, a defrosting command can be sent to the execution module; and so on.

[0034] Step 202: When a defrost command is received, if T2≤T1*a, the defrost system does not perform defrost processing; if T2>T1*a, the defrost system is controlled to perform defrost processing; wherein, a>0, the refrigeration system does not perform refrigeration processing between the time of receiving the defrost command and the end time of the second refrigeration process.

[0035] Here, the defrosting process can be: (1) the defrosting system works for a preset time and then stops; (2) a detector can be set to detect whether there is frost on the fins, and the defrosting system continues to work until there is no frost on the fins, or the thickness of the frost is lower than a certain preset threshold; etc.

[0036] It is understandable that the time spent in a refrigeration process is proportional to the amount of frost on the fins. Therefore, if the time T2 spent in a refrigeration process is relatively short, there will be less frost on the fins, and the condition "T2≤T1*a" will be easily satisfied. In this case, the defrosting system will not be activated, and the occurrence of "frost-free defrosting" can be avoided with a high probability.

[0037] When the intelligent defrosting method is executed for the first time, if "T2 ≤ T1 * a", the defrosting system does not work; it can be understood that there is frost on the fin. Then, after a period of time, the refrigeration system starts. It can be understood that due to the presence of frost, it will have an adverse effect on the refrigeration effect. Therefore, the refrigeration system needs to spend more time to refrigerate, and the time spent on this refrigeration process will increase. Then, after another period of time, the intelligent defrosting method runs. In step 202, "T2 > T1 * a" will be satisfied with a high probability, and then defrosting will be performed, so that the occurrence of the event of "frost not defrosted" can be avoided with a high probability.

[0038] In the inventor's experiment, it was found that this defrosting method can achieve the goals of power saving, greenness, and energy conservation in the cold storage without hardware investment and modification. And the experimental data show that this defrosting method can effectively save about 10% of energy.

[0039] Here, the value of a can be set according to the actual situation. A process or thread can also be set in the execution module, and this process or thread will monitor the defrosting effect of each intelligent defrosting method, and then adjust the value of a.

[0040] In this embodiment, when receiving a defrosting instruction, when T2 ≤ T1 * a and T2 < T1, the value of the time T1 spent on the first refrigeration process of the refrigeration system is modified to T2. Here, when the intelligent defrosting method is executed for the first time, if "T2 ≤ T1 * a and T2 < T1" is satisfied, the value of T1 is modified to T2. Then, next time, the satisfaction of "T2 ≤ T1 * a" will be greatly increased, that is, the defrosting system will perform defrosting with a high probability next time, so as to further avoid the occurrence of the event of "frost not defrosted". In practice, the modification of the time value is judged by the defrosting system independently without manual operation. It can be understood that this greatly improves the defrosting efficiency and saves the investment in human resources.

[0041] In this embodiment, a data storage system is provided in the cold storage; optionally, this data storage system can be a volatile memory.

[0042] The intelligent defrosting method further includes: continuously executing the following steps: when receiving a refrigeration instruction, the refrigeration system performs refrigeration processing, and at the end of the refrigeration processing, the start time and the time spent on this refrigeration processing are stored in the data storage system;

[0043] The phrase "obtaining the time T1 spent on the first cooling process of the refrigeration system, the time T2 spent on the second cooling process, the time of the first cooling process being earlier than the time of the second cooling process, and the refrigeration system not performing any cooling process between the first and second cooling processes" specifically includes: obtaining the two cooling processes whose start time is closest to the current time from the data storage system, wherein the one with the earlier start time is the first cooling process, and the one with the later start time is the second cooling process.

[0044] In this embodiment, a = 1.3. Extensive experimental research data shows that when the value of a is 1.3, it can not only avoid the occurrence of "frost-free defrosting" and "frost-free non-defrosting" events with a high probability, but also save energy to the greatest extent possible.

[0045] In this embodiment, the cold storage is equipped with a cold storage door for opening and closing the storage space;

[0046] The phrase "storing the start time and time spent in this refrigeration process in the data storage system" specifically includes: obtaining the start time and end time of this refrigeration process, and the total time T3 during which the cold storage door is open between the start time and end time; then the time spent in this refrigeration process = end time - start time - T3; and storing the start time and time spent in this refrigeration process in the data storage system.

[0047] It is understandable that whenever the cold storage door is opened, the refrigerant in the storage space is easily lost, which will greatly reduce the cooling effect of the refrigeration system. Therefore, the time when the refrigeration system is cooling and the cold storage door is open can be excluded from the time spent on refrigeration processing by the refrigeration system.

[0048] In this embodiment, "controlling the defrosting system to perform defrosting processing" specifically includes: controlling the defrosting system to perform defrosting processing for a preset time. Here, the preset time can be a fixed value. In addition, the execution module can also modify the preset time according to the actual situation. For example, during each defrosting process, the start time of defrosting and the disappearance time of the frost are counted. The time difference between the start time and the disappearance time can be counted as the effective time of the defrosting process. The larger the average of multiple effective times, the larger the preset time.

[0049] In this embodiment, "receiving a cooling command" means that the temperature of the storage space is greater than or equal to a preset temperature. Here, the execution module can detect the temperature of the storage space at regular intervals, and then determine whether the condition "the temperature of the storage space is greater than or equal to the preset temperature" is met. If it is met, a "cooling command" is sent to the process or thread responsible for controlling the operation of the cooling system, and the process or thread will then receive the cooling command.

[0050] Embodiment 2 of the present invention provides an intelligent defrosting device for a cold storage facility. The cold storage facility includes a refrigeration system, a defrosting system, and a storage space. The refrigeration system is used to refrigerate the storage space, and the defrosting system is used to defrost the storage space. Specifically, it includes the following modules:

[0051] The acquisition module acquires the time T1 spent on the first cooling process of the refrigeration system and the time T2 spent on the second cooling process. The time of the second cooling process is earlier than the time of the first cooling process, and the refrigeration system does not perform any cooling process between the first and second cooling processes.

[0052] When the execution module receives a defrost command, if T2 ≤ T1*a, the defrost system does not perform defrost processing; if T2 > T1*a, the defrost system is controlled to perform defrost processing; where a > 0, the refrigeration system does not perform refrigeration processing between the time of receiving the defrost command and the end time of the second refrigeration process.

[0053] Embodiment 3 of the present invention provides an electronic terminal, including a processor and a memory, wherein the memory stores program instructions, specifically including that the processor executes the program instructions to implement the intelligent defrosting method as described in any of the above embodiments.

[0054] It should be noted that although the steps are described in a specific order above, it does not mean that the steps must be executed in the above specific order. In fact, some of these steps can be executed concurrently, as long as the required function can be achieved.

[0055] This invention can be a system, method, and / or computer program product. A computer program product may include a readable storage medium having computer-readable program instructions loaded thereon for causing a processor to implement various aspects of the invention.

[0056] A readable storage medium can be a tangible device that holds and stores instructions for use by an instruction execution device. Readable storage media can include, for example, but not limited to, electrical storage devices, magnetic storage devices, optical storage devices, electromagnetic storage devices, semiconductor storage devices, or any suitable combination thereof. More specific examples (a non-exhaustive list) of readable storage media include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disc read-only memory (CD-ROM), digital multifunction disc (DVD), memory sticks, floppy disks, mechanical encoding devices, such as punch cards or recessed protrusions storing instructions thereon, and any suitable combination thereof.

[0057] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An intelligent defrosting method for a cold storage facility, the cold storage facility comprising a refrigeration system, a defrosting system, and a storage space, wherein the refrigeration system is used to refrigerate the storage space, and the defrosting system is used to defrost the storage space, characterized in that, The cold storage facility is equipped with a data storage system, including the following steps: The time T1 spent on the first cooling process of the refrigeration system and the time T2 spent on the second cooling process are obtained. The time of the first cooling process is earlier than the time of the second cooling process, and the refrigeration system does not perform any cooling process between the first and second cooling processes. Specifically, this includes: obtaining the two cooling processes with the closest start time to the current time from the data storage system, wherein the one with the earlier start time is the first cooling process and the one with the later start time is the second cooling process. Upon receiving a defrost command, if T2 ≤ T1 * a, the defrost system does not perform defrost processing; if T2 > T1 * a, the defrost system is controlled to perform defrost processing; wherein, a > 0, the refrigeration system does not perform refrigeration processing between the time of receiving the defrost command and the end time of the second refrigeration process. When a defrosting command is received, if T2 ≤ T1 * a and T2 < T1, the value of T1, which takes time for the first cooling process of the refrigeration system, is changed to T2. The intelligent defrosting method further includes: continuously performing the following steps: when a cooling command is received, the cooling system performs cooling processing, and when the cooling processing ends, the start time and time spent of this cooling processing are stored in the data storage system.

2. The intelligent defrosting method according to claim 1, characterized in that, a＝1.3。 3. The intelligent defrosting method according to claim 1, characterized in that, The cold storage is equipped with a cold storage door for opening and closing the storage space; The phrase "storing the start time and time spent in this refrigeration process in the data storage system" specifically includes: obtaining the start time and end time of this refrigeration process, and the total time T3 during which the cold storage door is open between the start time and end time; then the time spent in this refrigeration process = end time - start time - T3; and storing the start time and time spent in this refrigeration process in the data storage system.

4. The intelligent defrosting method according to claim 1, characterized in that, The phrase "controlling the defrosting system to perform defrosting" specifically includes: controlling the defrosting system to perform defrosting for a preset time.

5. The intelligent defrosting method according to claim 1, characterized in that, The phrase "received cooling command" means that a cooling command has been received when the temperature of the storage space is greater than or equal to a preset temperature.

6. An intelligent defrosting device for a cold storage facility, the cold storage facility comprising a refrigeration system, a defrosting system, and a storage space, wherein the refrigeration system is used to refrigerate the storage space, and the defrosting system is used to defrost the storage space, characterized in that, The cold storage facility is equipped with a data storage system, including the following modules: The acquisition module acquires the time T1 spent on the first cooling process of the refrigeration system and the time T2 spent on the second cooling process. The time of the first cooling process is earlier than the time of the second cooling process, and the refrigeration system does not perform any cooling process between the first and second cooling processes. Specifically, it acquires the two cooling processes with the closest start time to the current time from the data storage system, wherein the one with the earlier start time is the first cooling process and the one with the later start time is the second cooling process. The execution module, upon receiving a defrost command, determines the following: if T2 ≤ T1 * a, the defrost system does not perform defrost processing; if T2 > T1 * a, the defrost system performs defrost processing; where a > 0, the refrigeration system does not perform refrigeration processing between the time the defrost command is received and the end time of the second refrigeration process; upon receiving a defrost command, if T2 ≤ T1 * a and T2 < T1, the value of T1, the time spent by the refrigeration system in the first refrigeration process, is modified to T2. It also includes: continuously performing the following steps: when a cooling command is received, the cooling system performs cooling processing, and when the cooling processing ends, the start time and time spent of this cooling processing are stored in the data storage system.

7. A storage medium storing program instructions, characterized in that, When the program instructions are executed, the intelligent defrosting method as described in any one of claims 1 to 5 is implemented.

8. An electronic terminal, comprising a processor and a memory, wherein the memory stores program instructions, characterized in that, The processor executes program instructions to implement the intelligent defrosting method as described in any one of claims 1 to 5.

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