Air cooler defrosting method and device, computer equipment and storage medium

Abstract

The embodiment of the invention relates to an air cooler defrosting method and device, air cooler equipment and a storage medium. The air inlet speed and the air outlet speed of multiple evaporator areas in an air cooler are obtained; the air speed difference between each air inlet air speed and the corresponding air outlet air speed is determined; the frosting state of each evaporator area is determined according to each air speed difference and the current first operation duration of the air cooler; and controlling the electric heating device to defrost the evaporator area according to the frosting state. Therefore, the electric heating devices can be arranged in the different areas of the evaporator of the air cooler, the different evaporator areas are defrosted according to the frosting states of the different evaporator areas, the defrosting accuracy of the evaporator is improved, it is avoided that one electric heating device is used for defrosting the whole evaporator, the defrosting energy consumption is reduced, and the defrosting efficiency is improved. And the resource utilization rate during defrosting is improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of air coolers, and in particular to a defrosting method, device, computer equipment and storage medium for an air cooler. Background Art

[0002] The air cooler works for a long time in a low-temperature cold storage environment. When cooling, the evaporator will continue to frost due to the low temperature and humidity in the storage. When the frost reaches a certain degree, it will hinder the air supply of the air cooler and affect the refrigeration effect of the air cooler. Therefore, the air cooler needs to be defrosted frequently.

[0003] The existing defrosting method usually defrosts the entire evaporator when the compressor operation time reaches a certain threshold. This method cannot understand the frost conditions of each area of ​​the evaporator, and cannot accurately defrost the different frost thicknesses in each area of ​​the evaporator, which easily leads to incomplete defrosting or no defrosting, resulting in resource waste and affecting the safety of the air cooler. Therefore, how to optimize the resource utilization rate when defrosting the evaporator of the air cooler has become an urgent problem to be solved. Summary of the invention

[0004] In view of this, in order to solve the above-mentioned technical problems or part of the technical problems, the embodiments of the present invention provide a method, device, computer equipment and storage medium for defrosting a cold air blower.

[0005] In a first aspect, an embodiment of the present invention provides a defrosting method for a cold air machine, comprising:

[0006] Obtaining the inlet wind speed and the outlet wind speed of multiple evaporator areas in the air cooler, wherein the evaporator in the air cooler is divided into multiple evaporator areas, an air duct is formed between each evaporator area and the corresponding fan, and an electric heating device is provided in each evaporator area;

[0007] Determine the wind speed difference between each of the inlet wind speeds and the corresponding outlet wind speed;

[0008] Determine the frosting state of each of the evaporator areas according to each of the wind speed differences and the current first operating time of the air cooler;

[0009] The electric heating device is controlled to defrost the evaporator area according to the frosting state.

[0010] In a possible implementation manner, determining the frosting state of each of the evaporator zones according to each of the first wind speed differences and the current first operating time of the air cooler includes:

[0011] When the wind speed difference of any of the evaporator areas is greater than a wind speed difference threshold, determining whether the first operation time is greater than or equal to a time threshold;

[0012] When the first operating time is greater than or equal to the time threshold, determining a target difference between the wind speed difference and the wind speed difference threshold;

[0013] The frosting state is determined according to a threshold range of the target difference, and the frosting state includes: light frosting or no frosting, moderate frosting, and severe frosting. The target difference is positively correlated with the frosting state.

[0014] In a possible implementation, the method further includes:

[0015] When the first operation time is less than the time threshold, determining whether dirt blockage occurs in the evaporator area;

[0016] When the evaporator area is not dirty or blocked, the defrosting interval of the evaporator area is controlled to be reduced, and the reduced time is positively correlated with the frosting state;

[0017] When the evaporator area is dirty and clogged, the evaporator area is cleaned.

[0018] In a possible implementation, the method further includes:

[0019] When the first operation time is greater than or equal to the time threshold, and the wind speed difference of any of the evaporator areas is equal to the wind speed difference threshold, obtaining a second operation time when the wind speed difference and the wind speed difference threshold are maintained the same;

[0020] The defrost interval duration of the evaporator zone is controlled to increase according to the second operation duration, and the increased duration is positively correlated with the second operation duration.

[0021] In a possible implementation manner, controlling the electric heating device to defrost the evaporator region according to the frosting state includes:

[0022] Determining a heating gear of a corresponding electric heating device according to the frosting state of each evaporator area, wherein the heating gear is positively correlated with the frosting state;

[0023] The electric heating device is controlled according to the heating gear to defrost the evaporator area.

[0024] In a possible implementation, the method further includes:

[0025] When the defrost time reaches the defrost time threshold, the evaporator area whose frosting state is still moderately frosted or severely frosted is determined as the target evaporator area;

[0026] Determining whether the target evaporator area is dirty or blocked;

[0027] When the target evaporator area is dirty and clogged, the target evaporator area is cleaned;

[0028] When the target evaporator area is not dirty or blocked, the heating gear of the electric heating device in the target evaporator area is controlled to increase.

[0029] In a possible implementation manner, the step of controlling the heating gear of the electric heating device of the target evaporator area to increase includes:

[0030] When the frosting state is still moderate frosting or severe frosting after the heating gear is increased, the evaporator is controlled to shut down;

[0031] The adjacent electric heating device of the evaporator area adjacent to the target evaporator area is controlled to be turned on, so as to defrost the target evaporator area through the adjacent electric heating device.

[0032] In a second aspect, an embodiment of the present invention provides a defrosting device for a cold air machine, comprising:

[0033] an acquisition module, used for acquiring the inlet wind speed and the outlet wind speed of the multiple evaporator areas in the air cooler, wherein the evaporator in the air cooler is divided into multiple evaporator areas, an air duct is formed between each evaporator area and the corresponding fan, and an electric heating device is arranged in each evaporator area;

[0034] A determination module, used to determine the wind speed difference between each of the inlet wind speeds and the corresponding outlet wind speed;

[0035] The determination module is further used to determine the frosting state of each of the evaporator areas according to each of the wind speed differences and the current first operating time of the air cooler;

[0036] A control module is used to control the electric heating device to defrost the evaporator area according to the frosting state.

[0037] In a third aspect, an embodiment of the present invention provides an air cooler device, comprising: a processor and a memory, wherein the processor is used to execute an air cooler defrost program stored in the memory to implement the air cooler defrost method described in any one of the first aspects above.

[0038] In a fourth aspect, an embodiment of the present invention provides a storage medium, wherein the storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the air cooler defrosting method described in any one of the first aspects above.

[0039] The defrosting solution for the air cooler provided by the embodiment of the present invention obtains the air inlet speed and air outlet speed of multiple evaporator areas in the air cooler, the evaporator in the air cooler is divided into multiple evaporator areas, each of the evaporator areas forms an air duct with the corresponding fan, and each of the evaporator areas is provided with an electric heating device; the wind speed difference between each of the air inlet speed and the corresponding air outlet speed is determined; the frosting state of each of the evaporator areas is determined according to each of the wind speed differences and the current first operating time of the air cooler; and the electric heating device is controlled to defrost the evaporator area according to the frosting state. Thus, electric heating devices can be provided in different areas of the evaporator of the air cooler, and different evaporator areas are defrosted according to the frosting state of different evaporator areas, thereby improving the accuracy of evaporator defrosting, avoiding the use of one electric heating device to defrost the entire evaporator, reducing the energy consumption of defrosting, and improving the resource utilization rate during defrosting. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A schematic diagram of a process of a defrosting method for a cold air machine provided by an embodiment of the present invention;

[0041] Figure 2 A schematic flow chart of another defrosting method for a cold air machine provided by an embodiment of the present invention;

[0042] Figure 3 A schematic structural diagram of a defrosting device for a cold air machine provided by an embodiment of the present invention;

[0043] Figure 4 A schematic structural diagram of a cooling air machine device provided in an embodiment of the present invention;

[0044] Figure 5 A schematic flow chart of another defrosting method for a cold air machine provided by an embodiment of the present invention;

[0045] Figure 6 A schematic structural diagram of a cooling fan provided by an embodiment of the present invention;

[0046] Figure 7 A schematic diagram of a top view of a cooling fan provided by an embodiment of the present invention;

[0047] Figure 8 A schematic structural diagram of another air cooler provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] To facilitate understanding of the embodiments of the present invention, specific embodiments will be further explained below in conjunction with the accompanying drawings. The embodiments do not constitute a limitation on the embodiments of the present invention.

[0050] Figure 1 A schematic diagram of a defrosting method for a cold air machine provided by an embodiment of the present invention is shown in FIG. Figure 1 As shown, the method specifically includes:

[0051] S11. Obtain the inlet wind speed and outlet wind speed of multiple evaporator areas in the air cooler. The evaporator in the air cooler is divided into multiple evaporator areas. An air duct is formed between each evaporator area and the corresponding fan. An electric heating device is provided in each evaporator area.

[0052] The defrosting method for an air cooler provided in an embodiment of the present invention is applied to air cooler equipment, which may include but is not limited to industrial air coolers, commercial air coolers, household air coolers, etc. Specifically, electric heating devices are arranged in different areas of the evaporator of the air cooler, and different evaporator areas are defrosted according to the frosting status of different evaporator areas.

[0053] A plurality of fans (for example, two) for blowing air outward are arranged on the front of the air cooler, and the back of the fans is arranged opposite to the evaporator in the air cooler, and the space between the two forms an air duct. The evaporator is located at the back of the air cooler, and the wind enters from the air inlet of the evaporator, blows out from the air outlet of the evaporator into the air duct, and blows out from the fan through the air duct, that is, the air outlet of the evaporator is arranged opposite to the back of the fan to form an air duct. A partition is arranged between the fan and the evaporator in advance, so that the air duct area between the fan and the evaporator is divided into multiple air ducts by the partition, and the evaporator is divided into multiple evaporator areas by the partition, and each fan and the corresponding evaporator area form an air duct. At the same time, a U-shaped electric heating device (for example, an electric heating wire, etc.) is arranged in each evaporator area to heat and defrost the evaporator area. The power of the electric heating device in each evaporator area can be the same, and the sum of the powers of all the electric heating devices is equal to the electric power required for defrosting the entire system.

[0054] Specifically, each evaporator area has an air inlet and an air outlet, and a wind speed sensor is installed at each air inlet and air outlet, so as to obtain the inlet wind speed of each air inlet and the outlet wind speed of each air outlet through the wind speed sensor.

[0055] S12. Determine the wind speed difference between each inlet wind speed and the corresponding outlet wind speed.

[0056] S13, determining the frosting state of each evaporator zone according to each wind speed difference and the current first operation time of the air cooler.

[0057] In this embodiment, a wind speed difference threshold is pre-set to determine whether the current evaporator area is frosted. Specifically, when each evaporator area is not blocked by dirt and frosted, the difference between the inlet wind speed and the outlet wind speed of each evaporator area is obtained as the baseline wind speed, and the baseline wind speed is used as the wind speed difference threshold of the evaporator area. A corresponding wind speed difference threshold can be pre-set for each evaporator area.

[0058] Furthermore, the wind speed difference of the evaporator area is obtained by subtracting the outlet wind speed from the current inlet wind speed of the evaporator area. Usually, the inlet wind speed is greater than the outlet wind speed. If the wind speed difference is greater than the wind speed difference threshold, it means that the current outlet wind speed is low, and it may be that frosting or dirt blockage occurs in the evaporator area. It is judged whether the current evaporator operation has reached the first operation time. If it has reached, it means that the current operation time is long and frosting may occur. If it has not reached, it means that the current operation time is short and has not reached the duration of frosting. It may be that the evaporator is dirty and blocked. At this time, the frosting state is not frosted, and the personnel are notified to clean the dirt blockage. After cleaning, if the wind speed difference is still greater than the wind speed difference threshold, it is determined that frosting occurs and the frosting state is further judged.

[0059] If the current operation reaches the first operation duration, the frosting state of the evaporator area is determined. Specifically, the corresponding frosting state can be determined according to the threshold range of the current wind speed difference. The larger the wind speed difference, the more serious the frosting state. The difference between the wind speed difference and the wind speed difference threshold is calculated as the target difference. If the target difference is zero or less than the first threshold, it can be determined that there is no frosting or slight frosting. When the target difference is greater than or equal to the first threshold and less than the second threshold, it is determined as moderate frosting. When it is greater than or equal to the third threshold, it is severe frosting. The first threshold is less than the second threshold and less than the third threshold. The specific frosting state can be divided according to the total number of adjustable heating gears of the electric heating device. One heating gear can correspond to one frosting state. The more serious the frosting state, the higher the corresponding heating gear.

[0060] S14, controlling the electric heating device to defrost the evaporator area according to the frosting state.

[0061] In this embodiment, heating gears corresponding to different frosting states are pre-set, and the electric heating device is controlled to defrost the area according to the heating gear corresponding to the frosting state of each evaporator area. Specifically, heating defrosting may not be performed when there is no frost or slight frost, the heating gear is the first gear when there is moderate frost, and the heating gear is the second gear when there is severe frost.

[0062] The defrosting method for a cold air machine provided by an embodiment of the present invention obtains the inlet wind speed and outlet wind speed of multiple evaporator areas in the cold air machine, wherein the evaporator in the cold air machine is divided into multiple evaporator areas, and an air duct is formed between each evaporator area and the corresponding fan, and an electric heating device is arranged in each evaporator area; the wind speed difference between each inlet wind speed and the corresponding outlet wind speed is determined; the frosting state of each evaporator area is determined according to each wind speed difference and the current first operation time of the cold air machine; and the electric heating device is controlled to defrost the evaporator area according to the frosting state. Thus, electric heating devices can be arranged in different areas of the evaporator of the cold air machine, and different evaporator areas are defrosted according to the frosting state of different evaporator areas, thereby improving the accuracy of evaporator defrosting, avoiding the use of one electric heating device to defrost the entire evaporator, reducing the energy consumption of defrosting, and improving the resource utilization rate during defrosting.

[0063] Figure 2 A schematic diagram of another defrosting method for a cold air machine provided by an embodiment of the present invention is shown in FIG. Figure 2 As shown, the method specifically includes:

[0064] S21. Obtain the inlet wind speed and outlet wind speed of multiple evaporator areas in the air cooler. The evaporator in the air cooler is divided into multiple evaporator areas. An air duct is formed between each evaporator area and the corresponding fan. An electric heating device is provided in each evaporator area.

[0065] In this embodiment, similar to step S11, refer to Figure 1 For the sake of brevity, the relevant content will not be elaborated here.

[0066] S22. Determine the wind speed difference between each inlet wind speed and the corresponding outlet wind speed; when the wind speed difference in any evaporator area is greater than the wind speed difference threshold, determine whether the first operating duration is greater than or equal to the duration threshold; when the first operating duration is greater than or equal to the duration threshold, determine the target difference between the wind speed difference and the wind speed difference threshold; determine the frosting state according to the threshold range within which the target difference lies.

[0067] In this embodiment, whenever the air cooler is running, all evaporator areas are running at the same time, but the frosting states of different evaporator areas are different, and the dirty blockage conditions are different. The wind speed difference is calculated for the inlet wind speed and outlet wind speed of each evaporator area, and each wind speed difference is compared with its corresponding wind speed difference threshold. When it is detected that the wind speed difference of any evaporator area is greater than the wind speed difference threshold, it means that frosting or dirty blockage may exist at present, so the outlet wind speed is reduced. At this time, further judgment is made as to whether dirty blockage or frosting occurs. It is judged whether the first operating time of the current evaporator is greater than or equal to the time threshold. When the judgment result is that the first operating time is greater than or equal to the time threshold, it means that the current operating time is in a time period prone to frost. At this time, it is determined that frosting has occurred, resulting in a reduction in the outlet wind speed. The target difference between the wind speed difference and the wind speed difference threshold is calculated to characterize the current frosting state. The larger the target difference, the smaller the outlet wind speed and the more serious the frosting state. The frosting state includes: light frosting or no frosting, moderate frosting, and severe frosting. The target difference is positively correlated with the frosting state.

[0068] When the first operating time is less than the time threshold, it is determined whether the evaporator area is dirty or blocked; when the evaporator area is not dirty or blocked, the defrost interval of the evaporator area is controlled to be reduced, and the reduced time is positively correlated with the frosting state; when the evaporator area is dirty or blocked, the evaporator area is cleaned.

[0069] Specifically, if the first operating time is less than the time threshold, it means that the time for easy frost formation has not yet been reached. It is possible to monitor whether the evaporator area is dirty or blocked by a sensor (such as a pressure sensor, a temperature sensor or a flow sensor) or an image acquisition device. When it is determined that the evaporator area is not dirty or blocked, it means that frost is currently occurring, which may be caused by the current long defrost interval. After the evaporator area is defrosted, the defrost interval should be reduced. The more severe the current frosting state, the longer the interval should be reduced. In this way, frosting can be discovered in time, and the removal of frost can be accelerated to maintain the working efficiency of the evaporator.

[0070] When dirt and blockage are detected, the user can be prompted to clean it, or the system can automatically start the cleaning procedure. It may include but is not limited to: Cleaning the evaporator surface: Use water, air or chemical detergent to clean the surface of the evaporator to remove dust and dirt, clean it through an automated cleaning system, etc.

[0071] In one possible implementation, when the first operating time is greater than or equal to the time threshold, and the wind speed difference of any evaporator area is equal to the wind speed difference threshold, it means that after the operating time reaches the operating time prone to frost, no frost occurs in the evaporator area, that is, the evaporator area is not prone to frost, and the defrost interval time can be increased. Specifically, the second operating time (that is, the time to maintain the unfrosted state) is obtained when the wind speed difference is maintained at the same as the wind speed difference threshold; the defrost interval time of the evaporator area is increased according to the second operating time, and the increased time is positively correlated with the second operating time, wherein the increased time corresponding to the second operating time within different threshold ranges can be pre-set, and the longer the second operating time, the longer the increased time.

[0072] S23, determining a heating gear of the corresponding electric heating device according to the frosting state of each evaporator area, wherein the heating gear is positively correlated with the frosting state; and controlling the electric heating device to defrost the evaporator area according to the heating gear.

[0073] In this embodiment, the heating gear of the electric heating device is adjusted according to the frosting state of each evaporator area to perform a defrosting operation. The heating gear refers to the heating intensity or power level of the electric heating device. The heating gear is positively correlated with the frosting state, that is, the more severe the frosting, the higher the heating intensity. By adjusting the heating gear, the frost layer on the surface of the evaporator can be effectively removed and the normal operation of the equipment can be restored. The more severe the frosting, the system automatically increases the heating gear to accelerate the melting of the frost layer; when there is less frosting, maintain a lower heating gear to avoid overheating. For example, when there is no frost or light frost: determine heating gear 1 (low-speed heating) or no heating, moderate frost: heating gear 2 (medium-speed heating), severe frost: heating gear 3 (high-speed heating).

[0074] The electric heating device starts to work, heating the evaporator area and gradually melting the frost layer. During the heating process, the system continuously monitors the temperature change until the frost layer on the evaporator surface is completely removed. When the frost is completely removed, the system automatically reduces the heating gear or stops heating to restore the normal working mode of the evaporator. According to the real-time changes in the frost, the system can flexibly adjust the heating gear. Real-time dynamic adjustment of the heating gear can better cope with different frosting conditions, thereby improving the working efficiency of the evaporator and the energy efficiency of the equipment.

[0075] You can also set the heating cycle control. When the electric heating device starts working, it will automatically stop heating after a certain period of time, and then perform periodic defrosting to prevent the electric heating device from overheating and causing equipment damage or wasting energy.

[0076] In a possible implementation, after frosting is determined, the operating parameters of the cooling fan may be adjusted simultaneously, such as reducing the cooling power or increasing the fan speed, to slow down the frosting speed.

[0077] S24. When the defrost time reaches the defrost time threshold, determine that the evaporator area whose frosting state is still moderately frosted or severely frosted is the target evaporator area; judge whether the target evaporator area is dirty or blocked; when the target evaporator area is dirty or blocked, clean the target evaporator area; when the target evaporator area is not dirty or blocked, control the heating gear of the electric heating device of the target evaporator area to increase.

[0078] In this embodiment, the defrost time threshold represents the time required for defrosting to be completed, which can be set by the time duration of all defrosting completions in history. When the defrost time reaches the defrost time threshold, defrosting should be completed under normal circumstances. If the frosting state is still determined to be moderate frosting or severe frosting by calculating the current wind speed difference and the wind speed difference threshold, the evaporator area is determined to be the target evaporator area, and it is determined whether the target evaporator area is dirty or blocked. When the target evaporator area is dirty or blocked, the target evaporator area is cleaned. The steps of judging whether it is dirty or blocked and cleaning are similar to S23. When the target evaporator area is not dirty or blocked, it means that the current heating gear is low, and the heating gear of the electric heating device of the target evaporator area is controlled to increase, including:

[0079] When the frosting state is still moderate frosting or severe frosting after the heating gear is increased, the evaporator is controlled to shut down; the adjacent electric heating device of the evaporator area adjacent to the target evaporator area is controlled to turn on, so as to defrost the target evaporator area through the adjacent electric heating device.

[0080] If the judgment result is that the target evaporator area is not dirty or blocked, and the target evaporator area is still moderately frosted or severely frosted after defrosting by the adjacent electric heating device, it means that the current evaporator is faulty. At this time, the evaporator is controlled to shut down and an alarm message is generated to remind the user to repair the evaporator.

[0081] As an example, Figure 5 FIG. 1 is a flow chart of another defrosting control method provided by an embodiment of the present invention. Figure 6 FIG. 1 is a schematic diagram of the structure of a cooling fan provided by an embodiment of the present invention. Figure 7 FIG. 1 is a schematic diagram of a top view of a cooling fan provided by an embodiment of the present invention. Figure 8 A schematic diagram of the structure of another cooling fan provided by an embodiment of the present invention is shown in FIG. Figure 7 As shown, the vertical rectangular block on the left side of the air cooler is the evaporator (as shown in Figure 8 The cuboid corresponding to the back of the two fans is shown in the figure. The evaporator and the fan in the internal structure of the air cooler are separated by a partition ( Figure 8The middle partition) is divided into two independent air ducts, namely air duct 1 and air duct 2. Each air duct corresponds to an evaporator area of ​​the evaporator, namely evaporator area 1 and evaporator area 2. Each evaporator area and air duct corresponds to a fan, such as Figure 6 As shown, a U-shaped electric heating device (i.e. Figure 8 The U-shaped electric heating inside each evaporator area in the system), the electric heating power of each electric heating device = the electric power required for defrosting of the entire system design selection / 2, Figure 7 The left side of the middle evaporator area is the air inlet, and the right side is the air outlet. The wind enters from the air inlet on the left, passes through the evaporator, and enters and exits from the air outlet on the right to evaporator area one and evaporator area two. That is, the wind enters the evaporator area from the outside, passes through the evaporator area, and then enters the air duct between the evaporator area and the fan.

[0082] Wind speed sensors are installed at the air inlet and outlet of each air duct to monitor wind speed changes in real time. When the air cooler is operating normally and the evaporator is normal (no frosting or dirt blockage), the difference between the air inlet wind speed and the air outlet wind speed is recorded as the baseline wind speed difference (wind speed difference threshold). The baseline wind speed difference will be used as a reference for subsequent detection. The wind speed sensor continuously monitors the wind speed difference between the air inlet and outlet of the air cooler. If the wind speed difference is greater than the baseline wind speed difference, and the air inlet wind speed does not change much, the airflow may be blocked due to frost or dirt blockage.

[0083] 1. When the wind speed sensor in any air duct detects that the wind speed difference is greater than the baseline wind speed difference, the running time of the air cooler is calculated synchronously. When the defrost interval is reached, the system issues a frost warning signal. In the case of frost warning, the operating parameters of the air cooler can be adjusted, such as reducing the cooling power or increasing the fan speed, to slow down the frosting speed, reduce the defrosting frequency and duration, and improve the overall efficiency of the system.

[0084] And the degree of frost (frosting state) of the evaporator area is determined according to the wind speed difference. If the wind speed difference is V0-V1, it is defined as no frost or light frost, then the area does not need to be defrosted and the electric heating does not operate; when the wind speed difference is V2-V3, it is defined as moderate frost, then the electric heating device operates at medium gear until the wind speed returns to normal value, and then the electric heating device is turned off; when the wind speed difference is V4-V5, it is defined as severe frost, then the electric heating device operates at high gear, and at the same time, it is determined whether the electric heating device of the adjacent evaporator area is turned on. If not, the electric heating device of the adjacent evaporator area is turned on synchronously to accelerate defrosting and shorten the defrosting time. If it does not recover for a long time, it may be due to the dirty evaporator blockage, and an alarm is issued.

[0085] Record the data of wind speed sensor for long-term analysis. Through data analysis, carry out defrost control program, optimize the operation parameters and defrost strategy of air cooler, improve the overall efficiency of the system. Optimize defrost frequency and duration to reduce energy consumption.

[0086] 2. When the wind speed sensor in any air duct detects that the wind speed difference is greater than the baseline wind speed difference, the operating time of the air cooler is calculated synchronously. When the defrost interval is not reached, check whether the evaporator is dirty or blocked. If so, clean the dirty evaporator. If not, optimize and adjust the defrost interval.

[0087] The defrosting method for a cold air machine provided by the embodiment of the present invention divides the evaporator into multiple evaporator areas evenly, arranges an independent electric heating device and a wind speed sensor in each area, performs defrosting in each area according to the frosting state of each area, and accurately judges the defrosting timing and defrosting heating gear of each area. Accurate defrosting control is achieved, the electric heating device is used reasonably, the excess defrosting heat is reduced, the influence of electric heating on the storage temperature is reduced, and the evaporator blockage can be distinguished as frosting ice blockage or dirt blockage, thereby reducing defrosting judgment errors and improving resource utilization during defrosting.

[0088] Figure 3 A schematic diagram of a defrosting device for a cold air machine provided by an embodiment of the present invention is shown in FIG. Figure 3 As shown, the device specifically includes:

[0089] The acquisition module 31 is used to acquire the air inlet speed and the air outlet speed of the multiple evaporator areas in the air cooler, the evaporator in the air cooler is divided into multiple evaporator areas, an air duct is formed between each evaporator area and the corresponding fan, and an electric heating device is arranged in each evaporator area;

[0090] A determination module 32, configured to determine a wind speed difference between each of the inlet wind speeds and the corresponding outlet wind speed;

[0091] The determination module is further used to determine the frosting state of each of the evaporator areas according to each of the wind speed differences and the current first operating time of the air cooler;

[0092] The control module 33 is used to control the electric heating device to defrost the evaporator area according to the frosting state.

[0093] In a possible implementation, the judgment module 34 is configured to judge whether the first operation duration is greater than or equal to a duration threshold when the wind speed difference of any of the evaporator areas is greater than a wind speed difference threshold;

[0094] The determination module is specifically configured to determine a target difference between the wind speed difference and the wind speed difference threshold when the first operating time is greater than or equal to the time threshold;

[0095] The frosting state is determined according to a threshold range of the target difference, and the frosting state includes: light frosting or no frosting, moderate frosting, and severe frosting. The target difference is positively correlated with the frosting state.

[0096] In a possible implementation manner, the judgment module is further configured to judge whether dirt blockage occurs in the evaporator area when the first operation time is less than the time threshold;

[0097] The control module is further used to control the defrosting interval of the evaporator area to be reduced when there is no dirt blockage in the evaporator area, and the reduced time is positively correlated with the frosting state;

[0098] The processing module 35 is used to clean the evaporator area when the evaporator area is dirty and blocked.

[0099] In a possible implementation manner, the acquisition module is further configured to, when the first operation time is greater than or equal to the time threshold, and the wind speed difference of any of the evaporator areas is equal to the wind speed difference threshold, acquire a second operation time when the wind speed difference is maintained the same as the wind speed difference threshold;

[0100] The defrost interval duration of the evaporator zone is controlled to increase according to the second operation duration, and the increased duration is positively correlated with the second operation duration.

[0101] In a possible implementation manner, the determination module is further used to determine a heating gear of the corresponding electric heating device according to the frosting state of each evaporator area, and the heating gear is positively correlated with the frosting state;

[0102] The control module is specifically used to control the electric heating device to defrost the evaporator area according to the heating gear.

[0103] In a possible implementation manner, the determination module is further configured to, when the defrost time reaches a defrost time threshold, determine that the evaporator region whose frosting state is still moderately frosted or severely frosted is the target evaporator region;

[0104] The judging module is further used to judge whether the target evaporator area is dirty or blocked;

[0105] The processing module is further used to clean the target evaporator area when the target evaporator area is dirty and blocked;

[0106] The control module is further used to control the heating gear of the electric heating device in the target evaporator area to increase when the target evaporator area is not dirty or blocked.

[0107] In a possible implementation manner, the control module is further configured to control the evaporator to shut down when the frosting state is still moderate frosting or severe frosting after the heating gear is increased;

[0108] The adjacent electric heating device of the evaporator area adjacent to the target evaporator area is controlled to be turned on, so as to defrost the target evaporator area through the adjacent electric heating device.

[0109] Figure 4 A schematic diagram of the structure of a cooling air machine device provided by an embodiment of the present invention, Figure 4 The air cooler device 400 shown includes: at least one processor 401, a memory 402, at least one network interface 404 and other user interfaces 403. The various components in the air cooler device 400 are coupled together via a bus system 405. It is understood that the bus system 405 is used to achieve connection and communication between these components. In addition to the data bus, the bus system 405 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, the bus system 405 is not described in detail. Figure 4 Various buses are labeled as bus system 405 .

[0110] The user interface 403 may include a display, a keyboard, or a pointing device (eg, a mouse, a trackball, a touch pad, or a touch screen).

[0111] It can be understood that the memory 402 in the embodiment of the present invention can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DRRAM). The memory 402 described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0112] In some implementations, the memory 402 stores the following elements, executable units or data structures, or a subset thereof, or an extended set thereof: an operating system 4021 and application programs 4022 .

[0113] The operating system 4021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., which are used to implement various basic services and process hardware-based tasks. The application 4022 includes various application programs, such as a media player (Media Player), a browser (Browser), etc., which are used to implement various application services. The program for implementing the method of the embodiment of the present invention can be included in the application 4022.

[0114] In the embodiment of the present invention, by calling the program or instruction stored in the memory 402, specifically, the program or instruction stored in the application 4022, the processor 401 is used to execute the method steps provided by each method embodiment, for example, including:

[0115] Obtaining the inlet wind speed and the outlet wind speed of multiple evaporator areas in the air cooler, wherein the evaporator in the air cooler is divided into multiple evaporator areas, an air duct is formed between each evaporator area and the corresponding fan, and an electric heating device is provided in each evaporator area;

[0116] Determine the wind speed difference between each of the inlet wind speeds and the corresponding outlet wind speed;

[0117] Determine the frosting state of each of the evaporator areas according to each of the wind speed differences and the current first operating time of the air cooler;

[0118] The electric heating device is controlled to defrost the evaporator area according to the frosting state.

[0119] In a possible implementation, when the wind speed difference of any of the evaporator areas is greater than a wind speed difference threshold, determining whether the first operation duration is greater than or equal to a duration threshold;

[0120] When the first operating time is greater than or equal to the time threshold, determining a target difference between the wind speed difference and the wind speed difference threshold;

[0121] The frosting state is determined according to a threshold range of the target difference, and the frosting state includes: light frosting or no frosting, moderate frosting, and severe frosting. The target difference is positively correlated with the frosting state.

[0122] In a possible implementation manner, when the first operation time is less than the time threshold, it is determined whether dirt blockage occurs in the evaporator area;

[0123] When the evaporator area is not dirty or blocked, the defrosting interval of the evaporator area is controlled to be reduced, and the reduced time is positively correlated with the frosting state;

[0124] When the evaporator area is dirty and clogged, the evaporator area is cleaned.

[0125] In a possible implementation, when the first operation time is greater than or equal to the time threshold, and the wind speed difference of any of the evaporator areas is equal to the wind speed difference threshold, a second operation time when the wind speed difference and the wind speed difference threshold are maintained the same is obtained;

[0126] The defrost interval duration of the evaporator zone is controlled to increase according to the second operation duration, and the increased duration is positively correlated with the second operation duration.

[0127] In a possible implementation manner, a heating gear of a corresponding electric heating device is determined according to the frosting state of each evaporator region, and the heating gear is positively correlated with the frosting state;

[0128] The electric heating device is controlled according to the heating gear to defrost the evaporator area.

[0129] In a possible implementation, when the defrost time reaches a defrost time threshold, it is determined that the evaporator region whose frosting state is still moderately frosted or severely frosted is the target evaporator region;

[0130] Determining whether the target evaporator area is dirty or blocked;

[0131] When the target evaporator area is dirty and clogged, the target evaporator area is cleaned;

[0132] When the target evaporator area is not dirty or blocked, the heating gear of the electric heating device in the target evaporator area is controlled to increase.

[0133] In a possible implementation manner, when the frosting state is still moderate frosting or severe frosting after the heating gear is increased, the evaporator is controlled to shut down;

[0134] The adjacent electric heating device of the evaporator area adjacent to the target evaporator area is controlled to be turned on, so as to defrost the target evaporator area through the adjacent electric heating device.

[0135] The method disclosed in the above embodiment of the present invention can be applied to the processor 401, or implemented by the processor 401. The processor 401 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit in the processor 401 or the instruction in the form of software. The above processor 401 can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present invention can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiment of the present invention can be directly embodied as a hardware decoding processor to execute, or the hardware and software units in the decoding processor can be executed. The software unit can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 402, and the processor 401 reads the information in the memory 402 and completes the steps of the above method in combination with its hardware.

[0136] It is understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit may be implemented in one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPDevice, DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described in the present application, or a combination thereof.

[0137] For software implementation, the technology described herein can be implemented by a unit that performs the functions described herein. The software code can be stored in a memory and executed by a processor. The memory can be implemented in the processor or outside the processor.

[0138] The cooling air machine device provided in this embodiment can be as follows Figure 4 The air cooler device shown in FIG. 1 may be implemented as follows: Figure 1-2 All steps of the intercooler defrosting method are achieved Figure 1-2 The technical effect of the cold air machine defrosting method shown in the figure is shown in the figure. Figure 1-2 For the sake of brevity, the relevant description is not repeated here.

[0139] The embodiment of the present invention also provides a storage medium (computer-readable storage medium). The storage medium here stores one or more programs. The storage medium may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a read-only memory, a flash memory, a hard disk or a solid-state drive; the memory may also include a combination of the above-mentioned types of memory.

[0140] When one or more programs in the storage medium can be executed by one or more processors, the above-mentioned air cooler defrosting method executed on the device side can be implemented.

[0141] The processor is used to execute the defrosting program of the air cooler stored in the memory to implement the following steps of the defrosting method of the air cooler executed on the device side:

[0142] Obtaining the inlet wind speed and the outlet wind speed of multiple evaporator areas in the air cooler, wherein the evaporator in the air cooler is divided into multiple evaporator areas, an air duct is formed between each evaporator area and the corresponding fan, and an electric heating device is provided in each evaporator area;

[0143] Determine the wind speed difference between each of the inlet wind speeds and the corresponding outlet wind speed;

[0144] Determine the frosting state of each of the evaporator areas according to each of the wind speed differences and the current first operating time of the air cooler;

[0145] The electric heating device is controlled to defrost the evaporator area according to the frosting state.

[0146] In a possible implementation, when the wind speed difference of any of the evaporator areas is greater than a wind speed difference threshold, determining whether the first operation duration is greater than or equal to a duration threshold;

[0147] When the first operating time is greater than or equal to the time threshold, determining a target difference between the wind speed difference and the wind speed difference threshold;

[0148] The frosting state is determined according to a threshold range of the target difference, and the frosting state includes: light frosting or no frosting, moderate frosting, and severe frosting. The target difference is positively correlated with the frosting state.

[0149] In a possible implementation manner, when the first operation time is less than the time threshold, it is determined whether dirt blockage occurs in the evaporator area;

[0150] When the evaporator area is not dirty or blocked, the defrosting interval of the evaporator area is controlled to be reduced, and the reduced time is positively correlated with the frosting state;

[0151] When the evaporator area is dirty and clogged, the evaporator area is cleaned.

[0152] In a possible implementation, when the first operation time is greater than or equal to the time threshold, and the wind speed difference of any of the evaporator areas is equal to the wind speed difference threshold, a second operation time when the wind speed difference and the wind speed difference threshold are maintained the same is obtained;

[0153] The defrost interval duration of the evaporator zone is controlled to increase according to the second operation duration, and the increased duration is positively correlated with the second operation duration.

[0154] In a possible implementation manner, a heating gear of a corresponding electric heating device is determined according to the frosting state of each evaporator region, and the heating gear is positively correlated with the frosting state;

[0155] The electric heating device is controlled according to the heating gear to defrost the evaporator area.

[0156] In a possible implementation, when the defrost time reaches a defrost time threshold, it is determined that the evaporator region whose frosting state is still moderately frosted or severely frosted is the target evaporator region;

[0157] Determining whether the target evaporator area is dirty or blocked;

[0158] When the target evaporator area is dirty and clogged, the target evaporator area is cleaned;

[0159] When the target evaporator area is not dirty or blocked, the heating gear of the electric heating device in the target evaporator area is controlled to increase.

[0160] In a possible implementation manner, when the frosting state is still moderate frosting or severe frosting after the heating gear is increased, the evaporator is controlled to shut down;

[0161] The adjacent electric heating device of the evaporator area adjacent to the target evaporator area is controlled to be turned on, so as to defrost the target evaporator area through the adjacent electric heating device.

[0162] The professionals should further realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to the function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0163] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0164] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A defrosting method for a cold air machine, characterized in that: include: Obtaining the inlet wind speed and the outlet wind speed of multiple evaporator areas in the air cooler, wherein the evaporator in the air cooler is divided into multiple evaporator areas, an air duct is formed between each evaporator area and the corresponding fan, and an electric heating device is provided in each evaporator area; Determine the wind speed difference between each of the inlet wind speeds and the corresponding outlet wind speed; Determine the frosting state of each of the evaporator areas according to each of the wind speed differences and the current first operating time of the air cooler; The electric heating device is controlled to defrost the evaporator area according to the frosting state.

2. The method according to claim 1, characterized in that: The determining the frosting state of each of the evaporator areas according to each of the first wind speed differences and the current first operating time of the air cooler includes: When the wind speed difference of any of the evaporator areas is greater than a wind speed difference threshold, determining whether the first operation time is greater than or equal to a time threshold; When the first operating time is greater than or equal to the time threshold, determining a target difference between the wind speed difference and the wind speed difference threshold; The frosting state is determined according to a threshold range of the target difference, and the frosting state includes: light frosting or no frosting, moderate frosting, and severe frosting. The target difference is positively correlated with the frosting state.

3. The method according to claim 2, characterized in that The method further comprises: When the first operation time is less than the time threshold, determining whether dirt blockage occurs in the evaporator area; When the evaporator area is not dirty or blocked, the defrosting interval of the evaporator area is controlled to be reduced, and the reduced time is positively correlated with the frosting state; When the evaporator area is dirty and clogged, the evaporator area is cleaned.

4. The method according to claim 3, characterized in that The method further comprises: When the first operation time is greater than or equal to the time threshold, and the wind speed difference of any of the evaporator areas is equal to the wind speed difference threshold, obtaining a second operation time when the wind speed difference and the wind speed difference threshold are maintained the same; The defrost interval duration of the evaporator zone is controlled to increase according to the second operation duration, and the increased duration is positively correlated with the second operation duration.

5. The method according to claim 2, characterized in that: The step of controlling the electric heating device to defrost the evaporator region according to the frosting state includes: Determining a heating gear of a corresponding electric heating device according to the frosting state of each evaporator area, wherein the heating gear is positively correlated with the frosting state; The electric heating device is controlled according to the heating gear to defrost the evaporator area.

6. The method according to claim 5, characterized in that The method further comprises: When the defrost time reaches the defrost time threshold, the evaporator area whose frosting state is still moderately frosted or severely frosted is determined as the target evaporator area; Determining whether the target evaporator area is dirty or blocked; When the target evaporator area is dirty and clogged, the target evaporator area is cleaned; When the target evaporator area is not dirty or blocked, the heating gear of the electric heating device in the target evaporator area is controlled to increase.

7. The method according to claim 5, characterized in that The step of controlling the heating gear of the electric heating device of the target evaporator area to increase includes: When the frosting state is still moderate frosting or severe frosting after the heating gear is increased, the evaporator is controlled to shut down; The adjacent electric heating device of the evaporator area adjacent to the target evaporator area is controlled to be turned on, so as to defrost the target evaporator area through the adjacent electric heating device.

8. A defrosting device for a cold air machine, characterized in that: include: an acquisition module, used for acquiring the inlet wind speed and the outlet wind speed of the multiple evaporator areas in the air cooler, wherein the evaporator in the air cooler is divided into multiple evaporator areas, an air duct is formed between each evaporator area and the corresponding fan, and an electric heating device is arranged in each evaporator area; A determination module, used to determine the wind speed difference between each of the inlet wind speeds and the corresponding outlet wind speed; The determination module is further used to determine the frosting state of each of the evaporator areas according to each of the wind speed differences and the current first operating time of the air cooler; A control module is used to control the electric heating device to defrost the evaporator area according to the frosting state.

9. A cooling air machine, characterized in that: include: A processor and a memory, wherein the processor is used to execute a defrosting program for an air cooler stored in the memory to implement the defrosting method for an air cooler according to any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the defrosting method for a cold air machine according to any one of claims 1 to 7.

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